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authorqhuang8 <qhuang8@6f19259b-4bc3-4df7-8a09-765794883524>2008-05-27 03:24:01 +0000
committerqhuang8 <qhuang8@6f19259b-4bc3-4df7-8a09-765794883524>2008-05-27 03:24:01 +0000
commitac644614683362804223844048c5be1a2adfa6b7 (patch)
treede6dd02cb7d5c663e368665c33218a09c93d84ed /MdePkg/Include/Library/BaseLib.h
parentb233cbe5cc832b56c25cc95a33684de68976961b (diff)
downloadedk2-platforms-ac644614683362804223844048c5be1a2adfa6b7.tar.xz
De-unicode in comment for all source files.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5302 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Include/Library/BaseLib.h')
-rw-r--r--MdePkg/Include/Library/BaseLib.h14478
1 files changed, 7239 insertions, 7239 deletions
diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h
index 0733da131b..6961c0a229 100644
--- a/MdePkg/Include/Library/BaseLib.h
+++ b/MdePkg/Include/Library/BaseLib.h
@@ -1,7239 +1,7239 @@
-/** @file
- Memory-only library functions with no library constructor/destructor
-
- Copyright (c) 2006 - 2007, Intel Corporation
- All rights reserved. This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#ifndef __BASE_LIB__
-#define __BASE_LIB__
-
-//
-// Definitions for architecture specific types
-// These include SPIN_LOCK and BASE_LIBRARY_JUMP_BUFFER
-//
-
-//
-// SPIN_LOCK
-//
-typedef volatile UINTN SPIN_LOCK;
-
-#if defined (MDE_CPU_IA32)
-//
-// IA32 context buffer used by SetJump() and LongJump()
-//
-typedef struct {
- UINT32 Ebx;
- UINT32 Esi;
- UINT32 Edi;
- UINT32 Ebp;
- UINT32 Esp;
- UINT32 Eip;
-} BASE_LIBRARY_JUMP_BUFFER;
-
-#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 4
-
-#elif defined (MDE_CPU_IPF)
-
-//
-// IPF context buffer used by SetJump() and LongJump()
-//
-typedef struct {
- UINT64 F2[2];
- UINT64 F3[2];
- UINT64 F4[2];
- UINT64 F5[2];
- UINT64 F16[2];
- UINT64 F17[2];
- UINT64 F18[2];
- UINT64 F19[2];
- UINT64 F20[2];
- UINT64 F21[2];
- UINT64 F22[2];
- UINT64 F23[2];
- UINT64 F24[2];
- UINT64 F25[2];
- UINT64 F26[2];
- UINT64 F27[2];
- UINT64 F28[2];
- UINT64 F29[2];
- UINT64 F30[2];
- UINT64 F31[2];
- UINT64 R4;
- UINT64 R5;
- UINT64 R6;
- UINT64 R7;
- UINT64 SP;
- UINT64 BR0;
- UINT64 BR1;
- UINT64 BR2;
- UINT64 BR3;
- UINT64 BR4;
- UINT64 BR5;
- UINT64 InitialUNAT;
- UINT64 AfterSpillUNAT;
- UINT64 PFS;
- UINT64 BSP;
- UINT64 Predicates;
- UINT64 LoopCount;
- UINT64 FPSR;
-} BASE_LIBRARY_JUMP_BUFFER;
-
-#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 0x10
-
-#elif defined (MDE_CPU_X64)
-//
-// X64 context buffer used by SetJump() and LongJump()
-//
-typedef struct {
- UINT64 Rbx;
- UINT64 Rsp;
- UINT64 Rbp;
- UINT64 Rdi;
- UINT64 Rsi;
- UINT64 R12;
- UINT64 R13;
- UINT64 R14;
- UINT64 R15;
- UINT64 Rip;
-} BASE_LIBRARY_JUMP_BUFFER;
-
-#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 8
-
-#elif defined (MDE_CPU_EBC)
-//
-// EBC context buffer used by SetJump() and LongJump()
-//
-typedef struct {
- UINT64 R0;
- UINT64 R1;
- UINT64 R2;
- UINT64 R3;
- UINT64 IP;
-} BASE_LIBRARY_JUMP_BUFFER;
-
-#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 8
-
-#else
-#error Unknown Processor Type
-#endif
-
-//
-// String Services
-//
-
-/**
- Copies one Null-terminated Unicode string to another Null-terminated Unicode
- string and returns the new Unicode string.
-
- This function copies the contents of the Unicode string Source to the Unicode
- string Destination, and returns Destination. If Source and Destination
- overlap, then the results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Destination is not aligned on a 16-bit boundary, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source is not aligned on a 16-bit boundary, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
-
- @return Destiantion
-
-**/
-CHAR16 *
-EFIAPI
-StrCpy (
- OUT CHAR16 *Destination,
- IN CONST CHAR16 *Source
- );
-
-
-/**
- Copies one Null-terminated Unicode string with a maximum length to another
- Null-terminated Unicode string with a maximum length and returns the new
- Unicode string.
-
- This function copies the contents of the Unicode string Source to the Unicode
- string Destination, and returns Destination. At most, Length Unicode
- characters are copied from Source to Destination. If Length is 0, then
- Destination is returned unmodified. If Length is greater that the number of
- Unicode characters in Source, then Destination is padded with Null Unicode
- characters. If Source and Destination overlap, then the results are
- undefined.
-
- If Length > 0 and Destination is NULL, then ASSERT().
- If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
- If Length > 0 and Source is NULL, then ASSERT().
- If Length > 0 and Source is not aligned on a 16-bit bounadry, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
- @param Length Maximum number of Unicode characters to copy.
-
- @return Destination
-
-**/
-CHAR16 *
-EFIAPI
-StrnCpy (
- OUT CHAR16 *Destination,
- IN CONST CHAR16 *Source,
- IN UINTN Length
- );
-
-
-/**
- Returns the length of a Null-terminated Unicode string.
-
- This function returns the number of Unicode characters in the Null-terminated
- Unicode string specified by String.
-
- If String is NULL, then ASSERT().
- If String is not aligned on a 16-bit boundary, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and String contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @return The length of String.
-
-**/
-UINTN
-EFIAPI
-StrLen (
- IN CONST CHAR16 *String
- );
-
-
-/**
- Returns the size of a Null-terminated Unicode string in bytes, including the
- Null terminator.
-
- This function returns the size, in bytes, of the Null-terminated Unicode
- string specified by String.
-
- If String is NULL, then ASSERT().
- If String is not aligned on a 16-bit boundary, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and String contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @return The size of String.
-
-**/
-UINTN
-EFIAPI
-StrSize (
- IN CONST CHAR16 *String
- );
-
-
-/**
- Compares two Null-terminated Unicode strings, and returns the difference
- between the first mismatched Unicode characters.
-
- This function compares the Null-terminated Unicode string FirstString to the
- Null-terminated Unicode string SecondString. If FirstString is identical to
- SecondString, then 0 is returned. Otherwise, the value returned is the first
- mismatched Unicode character in SecondString subtracted from the first
- mismatched Unicode character in FirstString.
-
- If FirstString is NULL, then ASSERT().
- If FirstString is not aligned on a 16-bit boundary, then ASSERT().
- If SecondString is NULL, then ASSERT().
- If SecondString is not aligned on a 16-bit boundary, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param FirstString Pointer to a Null-terminated Unicode string.
- @param SecondString Pointer to a Null-terminated Unicode string.
-
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
-
-**/
-INTN
-EFIAPI
-StrCmp (
- IN CONST CHAR16 *FirstString,
- IN CONST CHAR16 *SecondString
- );
-
-
-/**
- Compares two Null-terminated Unicode strings with maximum lengths, and
- returns the difference between the first mismatched Unicode characters.
-
- This function compares the Null-terminated Unicode string FirstString to the
- Null-terminated Unicode string SecondString. At most, Length Unicode
- characters will be compared. If Length is 0, then 0 is returned. If
- FirstString is identical to SecondString, then 0 is returned. Otherwise, the
- value returned is the first mismatched Unicode character in SecondString
- subtracted from the first mismatched Unicode character in FirstString.
-
- If Length > 0 and FirstString is NULL, then ASSERT().
- If Length > 0 and FirstString is not aligned on a 16-bit bounadary, then ASSERT().
- If Length > 0 and SecondString is NULL, then ASSERT().
- If Length > 0 and SecondString is not aligned on a 16-bit bounadary, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param FirstString Pointer to a Null-terminated Unicode string.
- @param SecondString Pointer to a Null-terminated Unicode string.
- @param Length Maximum number of Unicode characters to compare.
-
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
-
-**/
-INTN
-EFIAPI
-StrnCmp (
- IN CONST CHAR16 *FirstString,
- IN CONST CHAR16 *SecondString,
- IN UINTN Length
- );
-
-
-/**
- Concatenates one Null-terminated Unicode string to another Null-terminated
- Unicode string, and returns the concatenated Unicode string.
-
- This function concatenates two Null-terminated Unicode strings. The contents
- of Null-terminated Unicode string Source are concatenated to the end of
- Null-terminated Unicode string Destination. The Null-terminated concatenated
- Unicode String is returned. If Source and Destination overlap, then the
- results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Destination is not aligned on a 16-bit bounadary, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source is not aligned on a 16-bit bounadary, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Destination contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination
- and Source results in a Unicode string with more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
-
- @return Destination
-
-**/
-CHAR16 *
-EFIAPI
-StrCat (
- IN OUT CHAR16 *Destination,
- IN CONST CHAR16 *Source
- );
-
-
-/**
- Concatenates one Null-terminated Unicode string with a maximum length to the
- end of another Null-terminated Unicode string, and returns the concatenated
- Unicode string.
-
- This function concatenates two Null-terminated Unicode strings. The contents
- of Null-terminated Unicode string Source are concatenated to the end of
- Null-terminated Unicode string Destination, and Destination is returned. At
- most, Length Unicode characters are concatenated from Source to the end of
- Destination, and Destination is always Null-terminated. If Length is 0, then
- Destination is returned unmodified. If Source and Destination overlap, then
- the results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
- If Length > 0 and Source is NULL, then ASSERT().
- If Length > 0 and Source is not aligned on a 16-bit boundary, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Destination contains more
- than PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination
- and Source results in a Unicode string with more than
- PcdMaximumUnicodeStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param Destination Pointer to a Null-terminated Unicode string.
- @param Source Pointer to a Null-terminated Unicode string.
- @param Length Maximum number of Unicode characters to concatenate from
- Source.
-
- @return Destination
-
-**/
-CHAR16 *
-EFIAPI
-StrnCat (
- IN OUT CHAR16 *Destination,
- IN CONST CHAR16 *Source,
- IN UINTN Length
- );
-
-/**
- Returns the first occurance of a Null-terminated Unicode sub-string
- in a Null-terminated Unicode string.
-
- This function scans the contents of the Null-terminated Unicode string
- specified by String and returns the first occurrence of SearchString.
- If SearchString is not found in String, then NULL is returned. If
- the length of SearchString is zero, then String is
- returned.
-
- If String is NULL, then ASSERT().
- If String is not aligned on a 16-bit boundary, then ASSERT().
- If SearchString is NULL, then ASSERT().
- If SearchString is not aligned on a 16-bit boundary, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and SearchString
- or String contains more than PcdMaximumUnicodeStringLength Unicode
- characters not including the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
- @param SearchString Pointer to a Null-terminated Unicode string to search for.
-
- @retval NULL If the SearchString does not appear in String.
- @retval !NULL If there is a match.
-
-**/
-CHAR16 *
-EFIAPI
-StrStr (
- IN CONST CHAR16 *String,
- IN CONST CHAR16 *SearchString
- );
-
-/**
- Convert a Null-terminated Unicode decimal string to a value of
- type UINTN.
-
- This function returns a value of type UINTN by interpreting the contents
- of the Unicode string specified by String as a decimal number. The format
- of the input Unicode string String is:
-
- [spaces] [decimal digits].
-
- The valid decimal digit character is in the range [0-9]. The
- function will ignore the pad space, which includes spaces or
- tab characters, before [decimal digits]. The running zero in the
- beginning of [decimal digits] will be ignored. Then, the function
- stops at the first character that is a not a valid decimal character
- or a Null-terminator, whichever one comes first.
-
- If String is NULL, then ASSERT().
- If String is not aligned in a 16-bit boundary, then ASSERT().
- If String has only pad spaces, then 0 is returned.
- If String has no pad spaces or valid decimal digits,
- then 0 is returned.
- If the number represented by String overflows according
- to the range defined by UINTN, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and String contains
- more than PcdMaximumUnicodeStringLength Unicode characters not including
- the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @retval UINTN
-
-**/
-UINTN
-EFIAPI
-StrDecimalToUintn (
- IN CONST CHAR16 *String
- );
-
-/**
- Convert a Null-terminated Unicode decimal string to a value of
- type UINT64.
-
- This function returns a value of type UINT64 by interpreting the contents
- of the Unicode string specified by String as a decimal number. The format
- of the input Unicode string String is:
-
- [spaces] [decimal digits].
-
- The valid decimal digit character is in the range [0-9]. The
- function will ignore the pad space, which includes spaces or
- tab characters, before [decimal digits]. The running zero in the
- beginning of [decimal digits] will be ignored. Then, the function
- stops at the first character that is a not a valid decimal character
- or a Null-terminator, whichever one comes first.
-
- If String is NULL, then ASSERT().
- If String is not aligned in a 16-bit boundary, then ASSERT().
- If String has only pad spaces, then 0 is returned.
- If String has no pad spaces or valid decimal digits,
- then 0 is returned.
- If the number represented by String overflows according
- to the range defined by UINT64, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and String contains
- more than PcdMaximumUnicodeStringLength Unicode characters not including
- the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @retval UINT64
-
-**/
-UINT64
-EFIAPI
-StrDecimalToUint64 (
- IN CONST CHAR16 *String
- );
-
-
-/**
- Convert a Null-terminated Unicode hexadecimal string to a value of type UINTN.
-
- This function returns a value of type UINTN by interpreting the contents
- of the Unicode string specified by String as a hexadecimal number.
- The format of the input Unicode string String is:
-
- [spaces][zeros][x][hexadecimal digits].
-
- The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
- The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
- If "x" appears in the input string, it must be prefixed with at least one 0.
- The function will ignore the pad space, which includes spaces or tab characters,
- before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
- [hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
- first valid hexadecimal digit. Then, the function stops at the first character that is
- a not a valid hexadecimal character or NULL, whichever one comes first.
-
- If String is NULL, then ASSERT().
- If String is not aligned in a 16-bit boundary, then ASSERT().
- If String has only pad spaces, then zero is returned.
- If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
- then zero is returned.
- If the number represented by String overflows according to the range defined by
- UINTN, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and String contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @retval UINTN
-
-**/
-UINTN
-EFIAPI
-StrHexToUintn (
- IN CONST CHAR16 *String
- );
-
-
-/**
- Convert a Null-terminated Unicode hexadecimal string to a value of type UINT64.
-
- This function returns a value of type UINT64 by interpreting the contents
- of the Unicode string specified by String as a hexadecimal number.
- The format of the input Unicode string String is
-
- [spaces][zeros][x][hexadecimal digits].
-
- The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
- The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
- If "x" appears in the input string, it must be prefixed with at least one 0.
- The function will ignore the pad space, which includes spaces or tab characters,
- before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
- [hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
- first valid hexadecimal digit. Then, the function stops at the first character that is
- a not a valid hexadecimal character or NULL, whichever one comes first.
-
- If String is NULL, then ASSERT().
- If String is not aligned in a 16-bit boundary, then ASSERT().
- If String has only pad spaces, then zero is returned.
- If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
- then zero is returned.
- If the number represented by String overflows according to the range defined by
- UINT64, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and String contains more than
- PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated Unicode string.
-
- @retval UINT64
-
-**/
-UINT64
-EFIAPI
-StrHexToUint64 (
- IN CONST CHAR16 *String
- );
-
-/**
- Convert a nibble in the low 4 bits of a byte to a Unicode hexadecimal character.
-
- This function converts a nibble in the low 4 bits of a byte to a Unicode hexadecimal
- character For example, the nibble 0x01 and 0x0A will converted to L'1' and L'A'
- respectively.
-
- The upper nibble in the input byte will be masked off.
-
- @param Nibble The nibble which is in the low 4 bits of the input byte.
-
- @retval CHAR16 The Unicode hexadecimal character.
-
-**/
-CHAR16
-EFIAPI
-NibbleToHexChar (
- IN UINT8 Nibble
- )
-;
-
-/**
- Convert binary buffer to a Unicode String in a specified sequence.
-
- This function converts bytes in the binary Buffer Buf to a Unicode String Str.
- Each byte will be represented by two Unicode characters. For example, byte 0xA1 will
- be converted into two Unicode character L'A' and L'1'. In the output String, the Unicode Character
- for the Most Significant Nibble will be put before the Unicode Character for the Least Significant
- Nibble. The output string for the buffer containing a single byte 0xA1 will be L"A1".
- For a buffer with multiple bytes, the Unicode character produced by the first byte will be put into the
- the last character in the output string. The one next to first byte will be put into the
- character before the last character. This rules applies to the rest of the bytes. The Unicode
- character by the last byte will be put into the first character in the output string. For example,
- the input buffer for a 64-bits unsigned integrer 0x12345678abcdef1234 will be converted to
- a Unicode string equal to L"12345678abcdef1234".
-
- @param String On input, String is pointed to the buffer allocated for the convertion.
- @param StringLen The Length of String buffer to hold the output String. The length must include the tailing '\0' character.
- The StringLen required to convert a N bytes Buffer will be a least equal to or greater
- than 2*N + 1.
- @param Buffer The pointer to a input buffer.
- @param BufferSizeInBytes Lenth in bytes of the input buffer.
-
-
- @retval EFI_SUCCESS The convertion is successfull. All bytes in Buffer has been convert to the corresponding
- Unicode character and placed into the right place in String.
- @retval EFI_BUFFER_TOO_SMALL StringSizeInBytes is smaller than 2 * N + 1the number of bytes required to
- complete the convertion.
-**/
-RETURN_STATUS
-EFIAPI
-BufToHexString (
- IN OUT CHAR16 *String,
- IN OUT UINTN *StringLen,
- IN CONST UINT8 *Buffer,
- IN UINTN BufferSizeInBytes
- )
-;
-
-
-/**
- Convert a Unicode string consisting of hexadecimal characters to a output byte buffer.
-
- This function converts a Unicode string consisting of characters in the range of Hexadecimal
- character (L'0' to L'9', L'A' to L'F' and L'a' to L'f') to a output byte buffer. The function will stop
- at the first non-hexadecimal character or the NULL character. The convertion process can be
- simply viewed as the reverse operations defined by BufToHexString. Two Unicode characters will be
- converted into one byte. The first Unicode character represents the Most Significant Nibble and the
- second Unicode character represents the Least Significant Nibble in the output byte.
- The first pair of Unicode characters represents the last byte in the output buffer. The second pair of Unicode
- characters represent the the byte preceding the last byte. This rule applies to the rest pairs of bytes.
- The last pair represent the first byte in the output buffer.
-
- For example, a Unciode String L"12345678" will be converted into a buffer wil the following bytes
- (first byte is the byte in the lowest memory address): "0x78, 0x56, 0x34, 0x12".
-
- If String has N valid hexadecimal characters for conversion, the caller must make sure Buffer is at least
- N/2 (if N is even) or (N+1)/2 (if N if odd) bytes.
-
- @param Buffer The output buffer allocated by the caller.
- @param BufferSizeInBytes On input, the size in bytes of Buffer. On output, it is updated to
- contain the size of the Buffer which is actually used for the converstion.
- For Unicode string with 2*N hexadecimal characters (not including the
- tailing NULL character), N bytes of Buffer will be used for the output.
- @param String The input hexadecimal string.
- @param ConvertedStrLen The number of hexadecimal characters used to produce content in output
- buffer Buffer.
-
- @retval RETURN_BUFFER_TOO_SMALL The input BufferSizeInBytes is too small to hold the output. BufferSizeInBytes
- will be updated to the size required for the converstion.
- @retval RETURN_SUCCESS The convertion is successful or the first Unicode character from String
- is hexadecimal. If ConvertedStrLen is not NULL, it is updated
- to the number of hexadecimal character used for the converstion.
-**/
-RETURN_STATUS
-EFIAPI
-HexStringToBuf (
- OUT UINT8 *Buffer,
- IN OUT UINTN *BufferSizeInBytes,
- IN CONST CHAR16 *String,
- OUT UINTN *ConvertedStrLen OPTIONAL
- )
-;
-
-
-/**
- Test if a Unicode character is a hexadecimal digit. If true, the input
- Unicode character is converted to a byte.
-
- This function tests if a Unicode character is a hexadecimal digit. If true, the input
- Unicode character is converted to a byte. For example, Unicode character
- L'A' will be converted to 0x0A.
-
- If Digit is NULL, then ASSERT.
-
- @retval TRUE Char is in the range of Hexadecimal number. Digit is updated
- to the byte value of the number.
- @retval FALSE Char is not in the range of Hexadecimal number. Digit is keep
- intact.
-
-**/
-BOOLEAN
-EFIAPI
-IsHexDigit (
- OUT UINT8 *Digit,
- IN CHAR16 Char
- )
-;
-
-/**
- Convert one Null-terminated Unicode string to a Null-terminated
- ASCII string and returns the ASCII string.
-
- This function converts the content of the Unicode string Source
- to the ASCII string Destination by copying the lower 8 bits of
- each Unicode character. It returns Destination.
-
- If any Unicode characters in Source contain non-zero value in
- the upper 8 bits, then ASSERT().
-
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source is not aligned on a 16-bit boundary, then ASSERT().
- If Source and Destination overlap, then ASSERT().
-
- If PcdMaximumUnicodeStringLength is not zero, and Source contains
- more than PcdMaximumUnicodeStringLength Unicode characters not including
- the Null-terminator, then ASSERT().
-
- If PcdMaximumAsciiStringLength is not zero, and Source contains more
- than PcdMaximumAsciiStringLength Unicode characters not including the
- Null-terminator, then ASSERT().
-
- @param Source Pointer to a Null-terminated Unicode string.
- @param Destination Pointer to a Null-terminated ASCII string.
-
- @return Destination
-
-**/
-CHAR8 *
-EFIAPI
-UnicodeStrToAsciiStr (
- IN CONST CHAR16 *Source,
- OUT CHAR8 *Destination
- );
-
-
-/**
- Copies one Null-terminated ASCII string to another Null-terminated ASCII
- string and returns the new ASCII string.
-
- This function copies the contents of the ASCII string Source to the ASCII
- string Destination, and returns Destination. If Source and Destination
- overlap, then the results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
-
- @return Destination
-
-**/
-CHAR8 *
-EFIAPI
-AsciiStrCpy (
- OUT CHAR8 *Destination,
- IN CONST CHAR8 *Source
- );
-
-
-/**
- Copies one Null-terminated ASCII string with a maximum length to another
- Null-terminated ASCII string with a maximum length and returns the new ASCII
- string.
-
- This function copies the contents of the ASCII string Source to the ASCII
- string Destination, and returns Destination. At most, Length ASCII characters
- are copied from Source to Destination. If Length is 0, then Destination is
- returned unmodified. If Length is greater that the number of ASCII characters
- in Source, then Destination is padded with Null ASCII characters. If Source
- and Destination overlap, then the results are undefined.
-
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
- @param Length Maximum number of ASCII characters to copy.
-
- @return Destination
-
-**/
-CHAR8 *
-EFIAPI
-AsciiStrnCpy (
- OUT CHAR8 *Destination,
- IN CONST CHAR8 *Source,
- IN UINTN Length
- );
-
-
-/**
- Returns the length of a Null-terminated ASCII string.
-
- This function returns the number of ASCII characters in the Null-terminated
- ASCII string specified by String.
-
- If Length > 0 and Destination is NULL, then ASSERT().
- If Length > 0 and Source is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and String contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @return The length of String.
-
-**/
-UINTN
-EFIAPI
-AsciiStrLen (
- IN CONST CHAR8 *String
- );
-
-
-/**
- Returns the size of a Null-terminated ASCII string in bytes, including the
- Null terminator.
-
- This function returns the size, in bytes, of the Null-terminated ASCII string
- specified by String.
-
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and String contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @return The size of String.
-
-**/
-UINTN
-EFIAPI
-AsciiStrSize (
- IN CONST CHAR8 *String
- );
-
-
-/**
- Compares two Null-terminated ASCII strings, and returns the difference
- between the first mismatched ASCII characters.
-
- This function compares the Null-terminated ASCII string FirstString to the
- Null-terminated ASCII string SecondString. If FirstString is identical to
- SecondString, then 0 is returned. Otherwise, the value returned is the first
- mismatched ASCII character in SecondString subtracted from the first
- mismatched ASCII character in FirstString.
-
- If FirstString is NULL, then ASSERT().
- If SecondString is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and SecondString contains more
- than PcdMaximumAsciiStringLength ASCII characters not including the
- Null-terminator, then ASSERT().
-
- @param FirstString Pointer to a Null-terminated ASCII string.
- @param SecondString Pointer to a Null-terminated ASCII string.
-
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
-
-**/
-INTN
-EFIAPI
-AsciiStrCmp (
- IN CONST CHAR8 *FirstString,
- IN CONST CHAR8 *SecondString
- );
-
-
-/**
- Performs a case insensitive comparison of two Null-terminated ASCII strings,
- and returns the difference between the first mismatched ASCII characters.
-
- This function performs a case insensitive comparison of the Null-terminated
- ASCII string FirstString to the Null-terminated ASCII string SecondString. If
- FirstString is identical to SecondString, then 0 is returned. Otherwise, the
- value returned is the first mismatched lower case ASCII character in
- SecondString subtracted from the first mismatched lower case ASCII character
- in FirstString.
-
- If FirstString is NULL, then ASSERT().
- If SecondString is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and SecondString contains more
- than PcdMaximumAsciiStringLength ASCII characters not including the
- Null-terminator, then ASSERT().
-
- @param FirstString Pointer to a Null-terminated ASCII string.
- @param SecondString Pointer to a Null-terminated ASCII string.
-
- @retval 0 FirstString is identical to SecondString using case insensitive
- comparisons.
- @retval !=0 FirstString is not identical to SecondString using case
- insensitive comparisons.
-
-**/
-INTN
-EFIAPI
-AsciiStriCmp (
- IN CONST CHAR8 *FirstString,
- IN CONST CHAR8 *SecondString
- );
-
-
-/**
- Compares two Null-terminated ASCII strings with maximum lengths, and returns
- the difference between the first mismatched ASCII characters.
-
- This function compares the Null-terminated ASCII string FirstString to the
- Null-terminated ASCII string SecondString. At most, Length ASCII characters
- will be compared. If Length is 0, then 0 is returned. If FirstString is
- identical to SecondString, then 0 is returned. Otherwise, the value returned
- is the first mismatched ASCII character in SecondString subtracted from the
- first mismatched ASCII character in FirstString.
-
- If Length > 0 and FirstString is NULL, then ASSERT().
- If Length > 0 and SecondString is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and SecondString contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param FirstString Pointer to a Null-terminated ASCII string.
- @param SecondString Pointer to a Null-terminated ASCII string.
- @param Length Maximum number of ASCII characters for compare.
-
- @retval 0 FirstString is identical to SecondString.
- @retval !=0 FirstString is not identical to SecondString.
-
-**/
-INTN
-EFIAPI
-AsciiStrnCmp (
- IN CONST CHAR8 *FirstString,
- IN CONST CHAR8 *SecondString,
- IN UINTN Length
- );
-
-
-/**
- Concatenates one Null-terminated ASCII string to another Null-terminated
- ASCII string, and returns the concatenated ASCII string.
-
- This function concatenates two Null-terminated ASCII strings. The contents of
- Null-terminated ASCII string Source are concatenated to the end of Null-
- terminated ASCII string Destination. The Null-terminated concatenated ASCII
- String is returned.
-
- If Destination is NULL, then ASSERT().
- If Source is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and Destination contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero and concatenating Destination and
- Source results in a ASCII string with more than PcdMaximumAsciiStringLength
- ASCII characters, then ASSERT().
-
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
-
- @return Destination
-
-**/
-CHAR8 *
-EFIAPI
-AsciiStrCat (
- IN OUT CHAR8 *Destination,
- IN CONST CHAR8 *Source
- );
-
-
-/**
- Concatenates one Null-terminated ASCII string with a maximum length to the
- end of another Null-terminated ASCII string, and returns the concatenated
- ASCII string.
-
- This function concatenates two Null-terminated ASCII strings. The contents
- of Null-terminated ASCII string Source are concatenated to the end of Null-
- terminated ASCII string Destination, and Destination is returned. At most,
- Length ASCII characters are concatenated from Source to the end of
- Destination, and Destination is always Null-terminated. If Length is 0, then
- Destination is returned unmodified. If Source and Destination overlap, then
- the results are undefined.
-
- If Length > 0 and Destination is NULL, then ASSERT().
- If Length > 0 and Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and Destination contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and concatenating Destination and
- Source results in a ASCII string with more than PcdMaximumAsciiStringLength
- ASCII characters not including the Null-terminator, then ASSERT().
-
- @param Destination Pointer to a Null-terminated ASCII string.
- @param Source Pointer to a Null-terminated ASCII string.
- @param Length Maximum number of ASCII characters to concatenate from
- Source.
-
- @return Destination
-
-**/
-CHAR8 *
-EFIAPI
-AsciiStrnCat (
- IN OUT CHAR8 *Destination,
- IN CONST CHAR8 *Source,
- IN UINTN Length
- );
-
-
-/**
- Returns the first occurance of a Null-terminated ASCII sub-string
- in a Null-terminated ASCII string.
-
- This function scans the contents of the ASCII string specified by String
- and returns the first occurrence of SearchString. If SearchString is not
- found in String, then NULL is returned. If the length of SearchString is zero,
- then String is returned.
-
- If String is NULL, then ASSERT().
- If SearchString is NULL, then ASSERT().
-
- If PcdMaximumAsciiStringLength is not zero, and SearchString or
- String contains more than PcdMaximumAsciiStringLength Unicode characters
- not including the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
- @param SearchString Pointer to a Null-terminated ASCII string to search for.
-
- @retval NULL If the SearchString does not appear in String.
- @retval !NULL If there is a match.
-
-**/
-CHAR8 *
-EFIAPI
-AsciiStrStr (
- IN CONST CHAR8 *String,
- IN CONST CHAR8 *SearchString
- );
-
-
-/**
- Convert a Null-terminated ASCII decimal string to a value of type
- UINTN.
-
- This function returns a value of type UINTN by interpreting the contents
- of the ASCII string String as a decimal number. The format of the input
- ASCII string String is:
-
- [spaces] [decimal digits].
-
- The valid decimal digit character is in the range [0-9]. The function will
- ignore the pad space, which includes spaces or tab characters, before the digits.
- The running zero in the beginning of [decimal digits] will be ignored. Then, the
- function stops at the first character that is a not a valid decimal character or
- Null-terminator, whichever on comes first.
-
- If String has only pad spaces, then 0 is returned.
- If String has no pad spaces or valid decimal digits, then 0 is returned.
- If the number represented by String overflows according to the range defined by
- UINTN, then ASSERT().
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and String contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @retval UINTN
-
-**/
-UINTN
-EFIAPI
-AsciiStrDecimalToUintn (
- IN CONST CHAR8 *String
- );
-
-
-/**
- Convert a Null-terminated ASCII decimal string to a value of type
- UINT64.
-
- This function returns a value of type UINT64 by interpreting the contents
- of the ASCII string String as a decimal number. The format of the input
- ASCII string String is:
-
- [spaces] [decimal digits].
-
- The valid decimal digit character is in the range [0-9]. The function will
- ignore the pad space, which includes spaces or tab characters, before the digits.
- The running zero in the beginning of [decimal digits] will be ignored. Then, the
- function stops at the first character that is a not a valid decimal character or
- Null-terminator, whichever on comes first.
-
- If String has only pad spaces, then 0 is returned.
- If String has no pad spaces or valid decimal digits, then 0 is returned.
- If the number represented by String overflows according to the range defined by
- UINT64, then ASSERT().
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and String contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @retval UINT64
-
-**/
-UINT64
-EFIAPI
-AsciiStrDecimalToUint64 (
- IN CONST CHAR8 *String
- );
-
-
-/**
- Convert a Null-terminated ASCII hexadecimal string to a value of type UINTN.
-
- This function returns a value of type UINTN by interpreting the contents of
- the ASCII string String as a hexadecimal number. The format of the input ASCII
- string String is:
-
- [spaces][zeros][x][hexadecimal digits].
-
- The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
- The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix. If "x"
- appears in the input string, it must be prefixed with at least one 0. The function
- will ignore the pad space, which includes spaces or tab characters, before [zeros],
- [x] or [hexadecimal digits]. The running zero before [x] or [hexadecimal digits]
- will be ignored. Then, the decoding starts after [x] or the first valid hexadecimal
- digit. Then, the function stops at the first character that is a not a valid
- hexadecimal character or Null-terminator, whichever on comes first.
-
- If String has only pad spaces, then 0 is returned.
- If String has no leading pad spaces, leading zeros or valid hexadecimal digits, then
- 0 is returned.
-
- If the number represented by String overflows according to the range defined by UINTN,
- then ASSERT().
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero,
- and String contains more than PcdMaximumAsciiStringLength ASCII characters not including
- the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @retval UINTN
-
-**/
-UINTN
-EFIAPI
-AsciiStrHexToUintn (
- IN CONST CHAR8 *String
- );
-
-
-/**
- Convert a Null-terminated ASCII hexadecimal string to a value of type UINT64.
-
- This function returns a value of type UINT64 by interpreting the contents of
- the ASCII string String as a hexadecimal number. The format of the input ASCII
- string String is:
-
- [spaces][zeros][x][hexadecimal digits].
-
- The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
- The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix. If "x"
- appears in the input string, it must be prefixed with at least one 0. The function
- will ignore the pad space, which includes spaces or tab characters, before [zeros],
- [x] or [hexadecimal digits]. The running zero before [x] or [hexadecimal digits]
- will be ignored. Then, the decoding starts after [x] or the first valid hexadecimal
- digit. Then, the function stops at the first character that is a not a valid
- hexadecimal character or Null-terminator, whichever on comes first.
-
- If String has only pad spaces, then 0 is returned.
- If String has no leading pad spaces, leading zeros or valid hexadecimal digits, then
- 0 is returned.
-
- If the number represented by String overflows according to the range defined by UINT64,
- then ASSERT().
- If String is NULL, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero,
- and String contains more than PcdMaximumAsciiStringLength ASCII characters not including
- the Null-terminator, then ASSERT().
-
- @param String Pointer to a Null-terminated ASCII string.
-
- @retval UINT64
-
-**/
-UINT64
-EFIAPI
-AsciiStrHexToUint64 (
- IN CONST CHAR8 *String
- );
-
-
-/**
- Convert one Null-terminated ASCII string to a Null-terminated
- Unicode string and returns the Unicode string.
-
- This function converts the contents of the ASCII string Source to the Unicode
- string Destination, and returns Destination. The function terminates the
- Unicode string Destination by appending a Null-terminator character at the end.
- The caller is responsible to make sure Destination points to a buffer with size
- equal or greater than ((AsciiStrLen (Source) + 1) * sizeof (CHAR16)) in bytes.
-
- If Destination is NULL, then ASSERT().
- If Destination is not aligned on a 16-bit boundary, then ASSERT().
- If Source is NULL, then ASSERT().
- If Source and Destination overlap, then ASSERT().
- If PcdMaximumAsciiStringLength is not zero, and Source contains more than
- PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
- then ASSERT().
- If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
- PcdMaximumUnicodeStringLength ASCII characters not including the
- Null-terminator, then ASSERT().
-
- @param Source Pointer to a Null-terminated ASCII string.
- @param Destination Pointer to a Null-terminated Unicode string.
-
- @return Destination
-
-**/
-CHAR16 *
-EFIAPI
-AsciiStrToUnicodeStr (
- IN CONST CHAR8 *Source,
- OUT CHAR16 *Destination
- );
-
-
-/**
- Converts an 8-bit value to an 8-bit BCD value.
-
- Converts the 8-bit value specified by Value to BCD. The BCD value is
- returned.
-
- If Value >= 100, then ASSERT().
-
- @param Value The 8-bit value to convert to BCD. Range 0..99.
-
- @return The BCD value
-
-**/
-UINT8
-EFIAPI
-DecimalToBcd8 (
- IN UINT8 Value
- );
-
-
-/**
- Converts an 8-bit BCD value to an 8-bit value.
-
- Converts the 8-bit BCD value specified by Value to an 8-bit value. The 8-bit
- value is returned.
-
- If Value >= 0xA0, then ASSERT().
- If (Value & 0x0F) >= 0x0A, then ASSERT().
-
- @param Value The 8-bit BCD value to convert to an 8-bit value.
-
- @return The 8-bit value is returned.
-
-**/
-UINT8
-EFIAPI
-BcdToDecimal8 (
- IN UINT8 Value
- );
-
-
-//
-// Linked List Functions and Macros
-//
-
-/**
- Initializes the head node of a doubly linked list that is declared as a
- global variable in a module.
-
- Initializes the forward and backward links of a new linked list. After
- initializing a linked list with this macro, the other linked list functions
- may be used to add and remove nodes from the linked list. This macro results
- in smaller executables by initializing the linked list in the data section,
- instead if calling the InitializeListHead() function to perform the
- equivalent operation.
-
- @param ListHead The head note of a list to initiailize.
-
-**/
-#define INITIALIZE_LIST_HEAD_VARIABLE(ListHead) {&ListHead, &ListHead}
-
-
-/**
- Initializes the head node of a doubly linked list, and returns the pointer to
- the head node of the doubly linked list.
-
- Initializes the forward and backward links of a new linked list. After
- initializing a linked list with this function, the other linked list
- functions may be used to add and remove nodes from the linked list. It is up
- to the caller of this function to allocate the memory for ListHead.
-
- If ListHead is NULL, then ASSERT().
-
- @param ListHead A pointer to the head node of a new doubly linked list.
-
- @return ListHead
-
-**/
-LIST_ENTRY *
-EFIAPI
-InitializeListHead (
- IN LIST_ENTRY *ListHead
- );
-
-
-/**
- Adds a node to the beginning of a doubly linked list, and returns the pointer
- to the head node of the doubly linked list.
-
- Adds the node Entry at the beginning of the doubly linked list denoted by
- ListHead, and returns ListHead.
-
- If ListHead is NULL, then ASSERT().
- If Entry is NULL, then ASSERT().
- If ListHead was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and prior to insertion the number
- of nodes in ListHead, including the ListHead node, is greater than or
- equal to PcdMaximumLinkedListLength, then ASSERT().
-
- @param ListHead A pointer to the head node of a doubly linked list.
- @param Entry A pointer to a node that is to be inserted at the beginning
- of a doubly linked list.
-
- @return ListHead
-
-**/
-LIST_ENTRY *
-EFIAPI
-InsertHeadList (
- IN LIST_ENTRY *ListHead,
- IN LIST_ENTRY *Entry
- );
-
-
-/**
- Adds a node to the end of a doubly linked list, and returns the pointer to
- the head node of the doubly linked list.
-
- Adds the node Entry to the end of the doubly linked list denoted by ListHead,
- and returns ListHead.
-
- If ListHead is NULL, then ASSERT().
- If Entry is NULL, then ASSERT().
- If ListHead was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and prior to insertion the number
- of nodes in ListHead, including the ListHead node, is greater than or
- equal to PcdMaximumLinkedListLength, then ASSERT().
-
- @param ListHead A pointer to the head node of a doubly linked list.
- @param Entry A pointer to a node that is to be added at the end of the
- doubly linked list.
-
- @return ListHead
-
-**/
-LIST_ENTRY *
-EFIAPI
-InsertTailList (
- IN LIST_ENTRY *ListHead,
- IN LIST_ENTRY *Entry
- );
-
-
-/**
- Retrieves the first node of a doubly linked list.
-
- Returns the first node of a doubly linked list. List must have been
- initialized with InitializeListHead(). If List is empty, then NULL is
- returned.
-
- If List is NULL, then ASSERT().
- If List was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and the number of nodes
- in List, including the List node, is greater than or equal to
- PcdMaximumLinkedListLength, then ASSERT().
-
- @param List A pointer to the head node of a doubly linked list.
-
- @return The first node of a doubly linked list.
- @retval NULL The list is empty.
-
-**/
-LIST_ENTRY *
-EFIAPI
-GetFirstNode (
- IN CONST LIST_ENTRY *List
- );
-
-
-/**
- Retrieves the next node of a doubly linked list.
-
- Returns the node of a doubly linked list that follows Node. List must have
- been initialized with InitializeListHead(). If List is empty, then List is
- returned.
-
- If List is NULL, then ASSERT().
- If Node is NULL, then ASSERT().
- If List was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and List contains more than
- PcdMaximumLinkedListLenth nodes, then ASSERT().
- If Node is not a node in List, then ASSERT().
-
- @param List A pointer to the head node of a doubly linked list.
- @param Node A pointer to a node in the doubly linked list.
-
- @return Pointer to the next node if one exists. Otherwise a null value which
- is actually List is returned.
-
-**/
-LIST_ENTRY *
-EFIAPI
-GetNextNode (
- IN CONST LIST_ENTRY *List,
- IN CONST LIST_ENTRY *Node
- );
-
-
-/**
- Checks to see if a doubly linked list is empty or not.
-
- Checks to see if the doubly linked list is empty. If the linked list contains
- zero nodes, this function returns TRUE. Otherwise, it returns FALSE.
-
- If ListHead is NULL, then ASSERT().
- If ListHead was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and the number of nodes
- in List, including the List node, is greater than or equal to
- PcdMaximumLinkedListLength, then ASSERT().
-
- @param ListHead A pointer to the head node of a doubly linked list.
-
- @retval TRUE The linked list is empty.
- @retval FALSE The linked list is not empty.
-
-**/
-BOOLEAN
-EFIAPI
-IsListEmpty (
- IN CONST LIST_ENTRY *ListHead
- );
-
-
-/**
- Determines if a node in a doubly linked list is null.
-
- Returns FALSE if Node is one of the nodes in the doubly linked list specified
- by List. Otherwise, TRUE is returned. List must have been initialized with
- InitializeListHead().
-
- If List is NULL, then ASSERT().
- If Node is NULL, then ASSERT().
- If List was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and the number of nodes
- in List, including the List node, is greater than or equal to
- PcdMaximumLinkedListLength, then ASSERT().
- If Node is not a node in List and Node is not equal to List, then ASSERT().
-
- @param List A pointer to the head node of a doubly linked list.
- @param Node A pointer to a node in the doubly linked list.
-
- @retval TRUE Node is one of the nodes in the doubly linked list.
- @retval FALSE Node is not one of the nodes in the doubly linked list.
-
-**/
-BOOLEAN
-EFIAPI
-IsNull (
- IN CONST LIST_ENTRY *List,
- IN CONST LIST_ENTRY *Node
- );
-
-
-/**
- Determines if a node the last node in a doubly linked list.
-
- Returns TRUE if Node is the last node in the doubly linked list specified by
- List. Otherwise, FALSE is returned. List must have been initialized with
- InitializeListHead().
-
- If List is NULL, then ASSERT().
- If Node is NULL, then ASSERT().
- If List was not initialized with InitializeListHead(), then ASSERT().
- If PcdMaximumLinkedListLenth is not zero, and the number of nodes
- in List, including the List node, is greater than or equal to
- PcdMaximumLinkedListLength, then ASSERT().
- If Node is not a node in List, then ASSERT().
-
- @param List A pointer to the head node of a doubly linked list.
- @param Node A pointer to a node in the doubly linked list.
-
- @retval TRUE Node is the last node in the linked list.
- @retval FALSE Node is not the last node in the linked list.
-
-**/
-BOOLEAN
-EFIAPI
-IsNodeAtEnd (
- IN CONST LIST_ENTRY *List,
- IN CONST LIST_ENTRY *Node
- );
-
-
-/**
- Swaps the location of two nodes in a doubly linked list, and returns the
- first node after the swap.
-
- If FirstEntry is identical to SecondEntry, then SecondEntry is returned.
- Otherwise, the location of the FirstEntry node is swapped with the location
- of the SecondEntry node in a doubly linked list. SecondEntry must be in the
- same double linked list as FirstEntry and that double linked list must have
- been initialized with InitializeListHead(). SecondEntry is returned after the
- nodes are swapped.
-
- If FirstEntry is NULL, then ASSERT().
- If SecondEntry is NULL, then ASSERT().
- If SecondEntry and FirstEntry are not in the same linked list, then ASSERT().
- If PcdMaximumLinkedListLength is not zero, and the number of nodes in the
- linked list containing the FirstEntry and SecondEntry nodes, including
- the FirstEntry and SecondEntry nodes, is greater than or equal to
- PcdMaximumLinkedListLength, then ASSERT().
-
- @param FirstEntry A pointer to a node in a linked list.
- @param SecondEntry A pointer to another node in the same linked list.
-
-**/
-LIST_ENTRY *
-EFIAPI
-SwapListEntries (
- IN LIST_ENTRY *FirstEntry,
- IN LIST_ENTRY *SecondEntry
- );
-
-
-/**
- Removes a node from a doubly linked list, and returns the node that follows
- the removed node.
-
- Removes the node Entry from a doubly linked list. It is up to the caller of
- this function to release the memory used by this node if that is required. On
- exit, the node following Entry in the doubly linked list is returned. If
- Entry is the only node in the linked list, then the head node of the linked
- list is returned.
-
- If Entry is NULL, then ASSERT().
- If Entry is the head node of an empty list, then ASSERT().
- If PcdMaximumLinkedListLength is not zero, and the number of nodes in the
- linked list containing Entry, including the Entry node, is greater than
- or equal to PcdMaximumLinkedListLength, then ASSERT().
-
- @param Entry A pointer to a node in a linked list
-
- @return Entry
-
-**/
-LIST_ENTRY *
-EFIAPI
-RemoveEntryList (
- IN CONST LIST_ENTRY *Entry
- );
-
-//
-// Math Services
-//
-
-/**
- Shifts a 64-bit integer left between 0 and 63 bits. The low bits are filled
- with zeros. The shifted value is returned.
-
- This function shifts the 64-bit value Operand to the left by Count bits. The
- low Count bits are set to zero. The shifted value is returned.
-
- If Count is greater than 63, then ASSERT().
-
- @param Operand The 64-bit operand to shift left.
- @param Count The number of bits to shift left.
-
- @return Operand << Count
-
-**/
-UINT64
-EFIAPI
-LShiftU64 (
- IN UINT64 Operand,
- IN UINTN Count
- );
-
-
-/**
- Shifts a 64-bit integer right between 0 and 63 bits. This high bits are
- filled with zeros. The shifted value is returned.
-
- This function shifts the 64-bit value Operand to the right by Count bits. The
- high Count bits are set to zero. The shifted value is returned.
-
- If Count is greater than 63, then ASSERT().
-
- @param Operand The 64-bit operand to shift right.
- @param Count The number of bits to shift right.
-
- @return Operand >> Count
-
-**/
-UINT64
-EFIAPI
-RShiftU64 (
- IN UINT64 Operand,
- IN UINTN Count
- );
-
-
-/**
- Shifts a 64-bit integer right between 0 and 63 bits. The high bits are filled
- with original integer's bit 63. The shifted value is returned.
-
- This function shifts the 64-bit value Operand to the right by Count bits. The
- high Count bits are set to bit 63 of Operand. The shifted value is returned.
-
- If Count is greater than 63, then ASSERT().
-
- @param Operand The 64-bit operand to shift right.
- @param Count The number of bits to shift right.
-
- @return Operand >> Count
-
-**/
-UINT64
-EFIAPI
-ARShiftU64 (
- IN UINT64 Operand,
- IN UINTN Count
- );
-
-
-/**
- Rotates a 32-bit integer left between 0 and 31 bits, filling the low bits
- with the high bits that were rotated.
-
- This function rotates the 32-bit value Operand to the left by Count bits. The
- low Count bits are fill with the high Count bits of Operand. The rotated
- value is returned.
-
- If Count is greater than 31, then ASSERT().
-
- @param Operand The 32-bit operand to rotate left.
- @param Count The number of bits to rotate left.
-
- @return Operand <<< Count
-
-**/
-UINT32
-EFIAPI
-LRotU32 (
- IN UINT32 Operand,
- IN UINTN Count
- );
-
-
-/**
- Rotates a 32-bit integer right between 0 and 31 bits, filling the high bits
- with the low bits that were rotated.
-
- This function rotates the 32-bit value Operand to the right by Count bits.
- The high Count bits are fill with the low Count bits of Operand. The rotated
- value is returned.
-
- If Count is greater than 31, then ASSERT().
-
- @param Operand The 32-bit operand to rotate right.
- @param Count The number of bits to rotate right.
-
- @return Operand >>> Count
-
-**/
-UINT32
-EFIAPI
-RRotU32 (
- IN UINT32 Operand,
- IN UINTN Count
- );
-
-
-/**
- Rotates a 64-bit integer left between 0 and 63 bits, filling the low bits
- with the high bits that were rotated.
-
- This function rotates the 64-bit value Operand to the left by Count bits. The
- low Count bits are fill with the high Count bits of Operand. The rotated
- value is returned.
-
- If Count is greater than 63, then ASSERT().
-
- @param Operand The 64-bit operand to rotate left.
- @param Count The number of bits to rotate left.
-
- @return Operand <<< Count
-
-**/
-UINT64
-EFIAPI
-LRotU64 (
- IN UINT64 Operand,
- IN UINTN Count
- );
-
-
-/**
- Rotates a 64-bit integer right between 0 and 63 bits, filling the high bits
- with the high low bits that were rotated.
-
- This function rotates the 64-bit value Operand to the right by Count bits.
- The high Count bits are fill with the low Count bits of Operand. The rotated
- value is returned.
-
- If Count is greater than 63, then ASSERT().
-
- @param Operand The 64-bit operand to rotate right.
- @param Count The number of bits to rotate right.
-
- @return Operand >>> Count
-
-**/
-UINT64
-EFIAPI
-RRotU64 (
- IN UINT64 Operand,
- IN UINTN Count
- );
-
-
-/**
- Returns the bit position of the lowest bit set in a 32-bit value.
-
- This function computes the bit position of the lowest bit set in the 32-bit
- value specified by Operand. If Operand is zero, then -1 is returned.
- Otherwise, a value between 0 and 31 is returned.
-
- @param Operand The 32-bit operand to evaluate.
-
- @return Position of the lowest bit set in Operand if found.
- @retval -1 Operand is zero.
-
-**/
-INTN
-EFIAPI
-LowBitSet32 (
- IN UINT32 Operand
- );
-
-
-/**
- Returns the bit position of the lowest bit set in a 64-bit value.
-
- This function computes the bit position of the lowest bit set in the 64-bit
- value specified by Operand. If Operand is zero, then -1 is returned.
- Otherwise, a value between 0 and 63 is returned.
-
- @param Operand The 64-bit operand to evaluate.
-
- @return Position of the lowest bit set in Operand if found.
- @retval -1 Operand is zero.
-
-**/
-INTN
-EFIAPI
-LowBitSet64 (
- IN UINT64 Operand
- );
-
-
-/**
- Returns the bit position of the highest bit set in a 32-bit value. Equivalent
- to log2(x).
-
- This function computes the bit position of the highest bit set in the 32-bit
- value specified by Operand. If Operand is zero, then -1 is returned.
- Otherwise, a value between 0 and 31 is returned.
-
- @param Operand The 32-bit operand to evaluate.
-
- @return Position of the highest bit set in Operand if found.
- @retval -1 Operand is zero.
-
-**/
-INTN
-EFIAPI
-HighBitSet32 (
- IN UINT32 Operand
- );
-
-
-/**
- Returns the bit position of the highest bit set in a 64-bit value. Equivalent
- to log2(x).
-
- This function computes the bit position of the highest bit set in the 64-bit
- value specified by Operand. If Operand is zero, then -1 is returned.
- Otherwise, a value between 0 and 63 is returned.
-
- @param Operand The 64-bit operand to evaluate.
-
- @return Position of the highest bit set in Operand if found.
- @retval -1 Operand is zero.
-
-**/
-INTN
-EFIAPI
-HighBitSet64 (
- IN UINT64 Operand
- );
-
-
-/**
- Returns the value of the highest bit set in a 32-bit value. Equivalent to
- 1 << HighBitSet32(x).
-
- This function computes the value of the highest bit set in the 32-bit value
- specified by Operand. If Operand is zero, then zero is returned.
-
- @param Operand The 32-bit operand to evaluate.
-
- @return 1 << HighBitSet32(Operand)
- @retval 0 Operand is zero.
-
-**/
-UINT32
-EFIAPI
-GetPowerOfTwo32 (
- IN UINT32 Operand
- );
-
-
-/**
- Returns the value of the highest bit set in a 64-bit value. Equivalent to
- 1 << HighBitSet64(x).
-
- This function computes the value of the highest bit set in the 64-bit value
- specified by Operand. If Operand is zero, then zero is returned.
-
- @param Operand The 64-bit operand to evaluate.
-
- @return 1 << HighBitSet64(Operand)
- @retval 0 Operand is zero.
-
-**/
-UINT64
-EFIAPI
-GetPowerOfTwo64 (
- IN UINT64 Operand
- );
-
-
-/**
- Switches the endianess of a 16-bit integer.
-
- This function swaps the bytes in a 16-bit unsigned value to switch the value
- from little endian to big endian or vice versa. The byte swapped value is
- returned.
-
- @param Value Operand A 16-bit unsigned value.
-
- @return The byte swaped Operand.
-
-**/
-UINT16
-EFIAPI
-SwapBytes16 (
- IN UINT16 Value
- );
-
-
-/**
- Switches the endianess of a 32-bit integer.
-
- This function swaps the bytes in a 32-bit unsigned value to switch the value
- from little endian to big endian or vice versa. The byte swapped value is
- returned.
-
- @param Value Operand A 32-bit unsigned value.
-
- @return The byte swaped Operand.
-
-**/
-UINT32
-EFIAPI
-SwapBytes32 (
- IN UINT32 Value
- );
-
-
-/**
- Switches the endianess of a 64-bit integer.
-
- This function swaps the bytes in a 64-bit unsigned value to switch the value
- from little endian to big endian or vice versa. The byte swapped value is
- returned.
-
- @param Value Operand A 64-bit unsigned value.
-
- @return The byte swaped Operand.
-
-**/
-UINT64
-EFIAPI
-SwapBytes64 (
- IN UINT64 Value
- );
-
-
-/**
- Multiples a 64-bit unsigned integer by a 32-bit unsigned integer and
- generates a 64-bit unsigned result.
-
- This function multiples the 64-bit unsigned value Multiplicand by the 32-bit
- unsigned value Multiplier and generates a 64-bit unsigned result. This 64-
- bit unsigned result is returned.
-
- If the result overflows, then ASSERT().
-
- @param Multiplicand A 64-bit unsigned value.
- @param Multiplier A 32-bit unsigned value.
-
- @return Multiplicand * Multiplier
-
-**/
-UINT64
-EFIAPI
-MultU64x32 (
- IN UINT64 Multiplicand,
- IN UINT32 Multiplier
- );
-
-
-/**
- Multiples a 64-bit unsigned integer by a 64-bit unsigned integer and
- generates a 64-bit unsigned result.
-
- This function multiples the 64-bit unsigned value Multiplicand by the 64-bit
- unsigned value Multiplier and generates a 64-bit unsigned result. This 64-
- bit unsigned result is returned.
-
- If the result overflows, then ASSERT().
-
- @param Multiplicand A 64-bit unsigned value.
- @param Multiplier A 64-bit unsigned value.
-
- @return Multiplicand * Multiplier
-
-**/
-UINT64
-EFIAPI
-MultU64x64 (
- IN UINT64 Multiplicand,
- IN UINT64 Multiplier
- );
-
-
-/**
- Multiples a 64-bit signed integer by a 64-bit signed integer and generates a
- 64-bit signed result.
-
- This function multiples the 64-bit signed value Multiplicand by the 64-bit
- signed value Multiplier and generates a 64-bit signed result. This 64-bit
- signed result is returned.
-
- If the result overflows, then ASSERT().
-
- @param Multiplicand A 64-bit signed value.
- @param Multiplier A 64-bit signed value.
-
- @return Multiplicand * Multiplier
-
-**/
-INT64
-EFIAPI
-MultS64x64 (
- IN INT64 Multiplicand,
- IN INT64 Multiplier
- );
-
-
-/**
- Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates
- a 64-bit unsigned result.
-
- This function divides the 64-bit unsigned value Dividend by the 32-bit
- unsigned value Divisor and generates a 64-bit unsigned quotient. This
- function returns the 64-bit unsigned quotient.
-
- If Divisor is 0, then ASSERT().
-
- @param Dividend A 64-bit unsigned value.
- @param Divisor A 32-bit unsigned value.
-
- @return Dividend / Divisor
-
-**/
-UINT64
-EFIAPI
-DivU64x32 (
- IN UINT64 Dividend,
- IN UINT32 Divisor
- );
-
-
-/**
- Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates
- a 32-bit unsigned remainder.
-
- This function divides the 64-bit unsigned value Dividend by the 32-bit
- unsigned value Divisor and generates a 32-bit remainder. This function
- returns the 32-bit unsigned remainder.
-
- If Divisor is 0, then ASSERT().
-
- @param Dividend A 64-bit unsigned value.
- @param Divisor A 32-bit unsigned value.
-
- @return Dividend % Divisor
-
-**/
-UINT32
-EFIAPI
-ModU64x32 (
- IN UINT64 Dividend,
- IN UINT32 Divisor
- );
-
-
-/**
- Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates
- a 64-bit unsigned result and an optional 32-bit unsigned remainder.
-
- This function divides the 64-bit unsigned value Dividend by the 32-bit
- unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder
- is not NULL, then the 32-bit unsigned remainder is returned in Remainder.
- This function returns the 64-bit unsigned quotient.
-
- If Divisor is 0, then ASSERT().
-
- @param Dividend A 64-bit unsigned value.
- @param Divisor A 32-bit unsigned value.
- @param Remainder A pointer to a 32-bit unsigned value. This parameter is
- optional and may be NULL.
-
- @return Dividend / Divisor
-
-**/
-UINT64
-EFIAPI
-DivU64x32Remainder (
- IN UINT64 Dividend,
- IN UINT32 Divisor,
- OUT UINT32 *Remainder OPTIONAL
- );
-
-
-/**
- Divides a 64-bit unsigned integer by a 64-bit unsigned integer and generates
- a 64-bit unsigned result and an optional 64-bit unsigned remainder.
-
- This function divides the 64-bit unsigned value Dividend by the 64-bit
- unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder
- is not NULL, then the 64-bit unsigned remainder is returned in Remainder.
- This function returns the 64-bit unsigned quotient.
-
- If Divisor is 0, then ASSERT().
-
- @param Dividend A 64-bit unsigned value.
- @param Divisor A 64-bit unsigned value.
- @param Remainder A pointer to a 64-bit unsigned value. This parameter is
- optional and may be NULL.
-
- @return Dividend / Divisor
-
-**/
-UINT64
-EFIAPI
-DivU64x64Remainder (
- IN UINT64 Dividend,
- IN UINT64 Divisor,
- OUT UINT64 *Remainder OPTIONAL
- );
-
-
-/**
- Divides a 64-bit signed integer by a 64-bit signed integer and generates a
- 64-bit signed result and a optional 64-bit signed remainder.
-
- This function divides the 64-bit signed value Dividend by the 64-bit signed
- value Divisor and generates a 64-bit signed quotient. If Remainder is not
- NULL, then the 64-bit signed remainder is returned in Remainder. This
- function returns the 64-bit signed quotient.
-
- If Divisor is 0, then ASSERT().
-
- @param Dividend A 64-bit signed value.
- @param Divisor A 64-bit signed value.
- @param Remainder A pointer to a 64-bit signed value. This parameter is
- optional and may be NULL.
-
- @return Dividend / Divisor
-
-**/
-INT64
-EFIAPI
-DivS64x64Remainder (
- IN INT64 Dividend,
- IN INT64 Divisor,
- OUT INT64 *Remainder OPTIONAL
- );
-
-
-/**
- Reads a 16-bit value from memory that may be unaligned.
-
- This function returns the 16-bit value pointed to by Buffer. The function
- guarantees that the read operation does not produce an alignment fault.
-
- If the Buffer is NULL, then ASSERT().
-
- @param Uint16 Pointer to a 16-bit value that may be unaligned.
-
- @return *Uint16
-
-**/
-UINT16
-EFIAPI
-ReadUnaligned16 (
- IN CONST UINT16 *Uint16
- );
-
-
-/**
- Writes a 16-bit value to memory that may be unaligned.
-
- This function writes the 16-bit value specified by Value to Buffer. Value is
- returned. The function guarantees that the write operation does not produce
- an alignment fault.
-
- If the Buffer is NULL, then ASSERT().
-
- @param Uint16 Pointer to a 16-bit value that may be unaligned.
- @param Value 16-bit value to write to Buffer.
-
- @return Value
-
-**/
-UINT16
-EFIAPI
-WriteUnaligned16 (
- OUT UINT16 *Uint16,
- IN UINT16 Value
- );
-
-
-/**
- Reads a 24-bit value from memory that may be unaligned.
-
- This function returns the 24-bit value pointed to by Buffer. The function
- guarantees that the read operation does not produce an alignment fault.
-
- If the Buffer is NULL, then ASSERT().
-
- @param Buffer Pointer to a 24-bit value that may be unaligned.
-
- @return The value read.
-
-**/
-UINT32
-EFIAPI
-ReadUnaligned24 (
- IN CONST UINT32 *Buffer
- );
-
-
-/**
- Writes a 24-bit value to memory that may be unaligned.
-
- This function writes the 24-bit value specified by Value to Buffer. Value is
- returned. The function guarantees that the write operation does not produce
- an alignment fault.
-
- If the Buffer is NULL, then ASSERT().
-
- @param Buffer Pointer to a 24-bit value that may be unaligned.
- @param Value 24-bit value to write to Buffer.
-
- @return The value written.
-
-**/
-UINT32
-EFIAPI
-WriteUnaligned24 (
- OUT UINT32 *Buffer,
- IN UINT32 Value
- );
-
-
-/**
- Reads a 32-bit value from memory that may be unaligned.
-
- This function returns the 32-bit value pointed to by Buffer. The function
- guarantees that the read operation does not produce an alignment fault.
-
- If the Buffer is NULL, then ASSERT().
-
- @param Uint32 Pointer to a 32-bit value that may be unaligned.
-
- @return *Uint32
-
-**/
-UINT32
-EFIAPI
-ReadUnaligned32 (
- IN CONST UINT32 *Uint32
- );
-
-
-/**
- Writes a 32-bit value to memory that may be unaligned.
-
- This function writes the 32-bit value specified by Value to Buffer. Value is
- returned. The function guarantees that the write operation does not produce
- an alignment fault.
-
- If the Buffer is NULL, then ASSERT().
-
- @param Uint32 Pointer to a 32-bit value that may be unaligned.
- @param Value 32-bit value to write to Buffer.
-
- @return Value
-
-**/
-UINT32
-EFIAPI
-WriteUnaligned32 (
- OUT UINT32 *Uint32,
- IN UINT32 Value
- );
-
-
-/**
- Reads a 64-bit value from memory that may be unaligned.
-
- This function returns the 64-bit value pointed to by Buffer. The function
- guarantees that the read operation does not produce an alignment fault.
-
- If the Buffer is NULL, then ASSERT().
-
- @param Uint64 Pointer to a 64-bit value that may be unaligned.
-
- @return *Uint64
-
-**/
-UINT64
-EFIAPI
-ReadUnaligned64 (
- IN CONST UINT64 *Uint64
- );
-
-
-/**
- Writes a 64-bit value to memory that may be unaligned.
-
- This function writes the 64-bit value specified by Value to Buffer. Value is
- returned. The function guarantees that the write operation does not produce
- an alignment fault.
-
- If the Buffer is NULL, then ASSERT().
-
- @param Uint64 Pointer to a 64-bit value that may be unaligned.
- @param Value 64-bit value to write to Buffer.
-
- @return Value
-
-**/
-UINT64
-EFIAPI
-WriteUnaligned64 (
- OUT UINT64 *Uint64,
- IN UINT64 Value
- );
-
-
-//
-// Bit Field Functions
-//
-
-/**
- Returns a bit field from an 8-bit value.
-
- Returns the bitfield specified by the StartBit and the EndBit from Operand.
-
- If 8-bit operations are not supported, then ASSERT().
- If StartBit is greater than 7, then ASSERT().
- If EndBit is greater than 7, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..7.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..7.
-
- @return The bit field read.
-
-**/
-UINT8
-EFIAPI
-BitFieldRead8 (
- IN UINT8 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit
- );
-
-
-/**
- Writes a bit field to an 8-bit value, and returns the result.
-
- Writes Value to the bit field specified by the StartBit and the EndBit in
- Operand. All other bits in Operand are preserved. The new 8-bit value is
- returned.
-
- If 8-bit operations are not supported, then ASSERT().
- If StartBit is greater than 7, then ASSERT().
- If EndBit is greater than 7, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..7.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..7.
- @param Value New value of the bit field.
-
- @return The new 8-bit value.
-
-**/
-UINT8
-EFIAPI
-BitFieldWrite8 (
- IN UINT8 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT8 Value
- );
-
-
-/**
- Reads a bit field from an 8-bit value, performs a bitwise OR, and returns the
- result.
-
- Performs a bitwise inclusive OR between the bit field specified by StartBit
- and EndBit in Operand and the value specified by OrData. All other bits in
- Operand are preserved. The new 8-bit value is returned.
-
- If 8-bit operations are not supported, then ASSERT().
- If StartBit is greater than 7, then ASSERT().
- If EndBit is greater than 7, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..7.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..7.
- @param OrData The value to OR with the read value from the value
-
- @return The new 8-bit value.
-
-**/
-UINT8
-EFIAPI
-BitFieldOr8 (
- IN UINT8 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT8 OrData
- );
-
-
-/**
- Reads a bit field from an 8-bit value, performs a bitwise AND, and returns
- the result.
-
- Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData. All other bits in Operand are
- preserved. The new 8-bit value is returned.
-
- If 8-bit operations are not supported, then ASSERT().
- If StartBit is greater than 7, then ASSERT().
- If EndBit is greater than 7, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..7.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..7.
- @param AndData The value to AND with the read value from the value.
-
- @return The new 8-bit value.
-
-**/
-UINT8
-EFIAPI
-BitFieldAnd8 (
- IN UINT8 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT8 AndData
- );
-
-
-/**
- Reads a bit field from an 8-bit value, performs a bitwise AND followed by a
- bitwise OR, and returns the result.
-
- Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData, followed by a bitwise
- inclusive OR with value specified by OrData. All other bits in Operand are
- preserved. The new 8-bit value is returned.
-
- If 8-bit operations are not supported, then ASSERT().
- If StartBit is greater than 7, then ASSERT().
- If EndBit is greater than 7, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..7.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..7.
- @param AndData The value to AND with the read value from the value.
- @param OrData The value to OR with the result of the AND operation.
-
- @return The new 8-bit value.
-
-**/
-UINT8
-EFIAPI
-BitFieldAndThenOr8 (
- IN UINT8 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT8 AndData,
- IN UINT8 OrData
- );
-
-
-/**
- Returns a bit field from a 16-bit value.
-
- Returns the bitfield specified by the StartBit and the EndBit from Operand.
-
- If 16-bit operations are not supported, then ASSERT().
- If StartBit is greater than 15, then ASSERT().
- If EndBit is greater than 15, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..15.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..15.
-
- @return The bit field read.
-
-**/
-UINT16
-EFIAPI
-BitFieldRead16 (
- IN UINT16 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit
- );
-
-
-/**
- Writes a bit field to a 16-bit value, and returns the result.
-
- Writes Value to the bit field specified by the StartBit and the EndBit in
- Operand. All other bits in Operand are preserved. The new 16-bit value is
- returned.
-
- If 16-bit operations are not supported, then ASSERT().
- If StartBit is greater than 15, then ASSERT().
- If EndBit is greater than 15, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..15.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..15.
- @param Value New value of the bit field.
-
- @return The new 16-bit value.
-
-**/
-UINT16
-EFIAPI
-BitFieldWrite16 (
- IN UINT16 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT16 Value
- );
-
-
-/**
- Reads a bit field from a 16-bit value, performs a bitwise OR, and returns the
- result.
-
- Performs a bitwise inclusive OR between the bit field specified by StartBit
- and EndBit in Operand and the value specified by OrData. All other bits in
- Operand are preserved. The new 16-bit value is returned.
-
- If 16-bit operations are not supported, then ASSERT().
- If StartBit is greater than 15, then ASSERT().
- If EndBit is greater than 15, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..15.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..15.
- @param OrData The value to OR with the read value from the value
-
- @return The new 16-bit value.
-
-**/
-UINT16
-EFIAPI
-BitFieldOr16 (
- IN UINT16 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT16 OrData
- );
-
-
-/**
- Reads a bit field from a 16-bit value, performs a bitwise AND, and returns
- the result.
-
- Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData. All other bits in Operand are
- preserved. The new 16-bit value is returned.
-
- If 16-bit operations are not supported, then ASSERT().
- If StartBit is greater than 15, then ASSERT().
- If EndBit is greater than 15, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..15.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..15.
- @param AndData The value to AND with the read value from the value
-
- @return The new 16-bit value.
-
-**/
-UINT16
-EFIAPI
-BitFieldAnd16 (
- IN UINT16 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT16 AndData
- );
-
-
-/**
- Reads a bit field from a 16-bit value, performs a bitwise AND followed by a
- bitwise OR, and returns the result.
-
- Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData, followed by a bitwise
- inclusive OR with value specified by OrData. All other bits in Operand are
- preserved. The new 16-bit value is returned.
-
- If 16-bit operations are not supported, then ASSERT().
- If StartBit is greater than 15, then ASSERT().
- If EndBit is greater than 15, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..15.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..15.
- @param AndData The value to AND with the read value from the value.
- @param OrData The value to OR with the result of the AND operation.
-
- @return The new 16-bit value.
-
-**/
-UINT16
-EFIAPI
-BitFieldAndThenOr16 (
- IN UINT16 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT16 AndData,
- IN UINT16 OrData
- );
-
-
-/**
- Returns a bit field from a 32-bit value.
-
- Returns the bitfield specified by the StartBit and the EndBit from Operand.
-
- If 32-bit operations are not supported, then ASSERT().
- If StartBit is greater than 31, then ASSERT().
- If EndBit is greater than 31, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..31.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..31.
-
- @return The bit field read.
-
-**/
-UINT32
-EFIAPI
-BitFieldRead32 (
- IN UINT32 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit
- );
-
-
-/**
- Writes a bit field to a 32-bit value, and returns the result.
-
- Writes Value to the bit field specified by the StartBit and the EndBit in
- Operand. All other bits in Operand are preserved. The new 32-bit value is
- returned.
-
- If 32-bit operations are not supported, then ASSERT().
- If StartBit is greater than 31, then ASSERT().
- If EndBit is greater than 31, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..31.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..31.
- @param Value New value of the bit field.
-
- @return The new 32-bit value.
-
-**/
-UINT32
-EFIAPI
-BitFieldWrite32 (
- IN UINT32 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT32 Value
- );
-
-
-/**
- Reads a bit field from a 32-bit value, performs a bitwise OR, and returns the
- result.
-
- Performs a bitwise inclusive OR between the bit field specified by StartBit
- and EndBit in Operand and the value specified by OrData. All other bits in
- Operand are preserved. The new 32-bit value is returned.
-
- If 32-bit operations are not supported, then ASSERT().
- If StartBit is greater than 31, then ASSERT().
- If EndBit is greater than 31, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..31.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..31.
- @param OrData The value to OR with the read value from the value
-
- @return The new 32-bit value.
-
-**/
-UINT32
-EFIAPI
-BitFieldOr32 (
- IN UINT32 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT32 OrData
- );
-
-
-/**
- Reads a bit field from a 32-bit value, performs a bitwise AND, and returns
- the result.
-
- Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData. All other bits in Operand are
- preserved. The new 32-bit value is returned.
-
- If 32-bit operations are not supported, then ASSERT().
- If StartBit is greater than 31, then ASSERT().
- If EndBit is greater than 31, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..31.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..31.
- @param AndData The value to AND with the read value from the value
-
- @return The new 32-bit value.
-
-**/
-UINT32
-EFIAPI
-BitFieldAnd32 (
- IN UINT32 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT32 AndData
- );
-
-
-/**
- Reads a bit field from a 32-bit value, performs a bitwise AND followed by a
- bitwise OR, and returns the result.
-
- Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData, followed by a bitwise
- inclusive OR with value specified by OrData. All other bits in Operand are
- preserved. The new 32-bit value is returned.
-
- If 32-bit operations are not supported, then ASSERT().
- If StartBit is greater than 31, then ASSERT().
- If EndBit is greater than 31, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..31.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..31.
- @param AndData The value to AND with the read value from the value.
- @param OrData The value to OR with the result of the AND operation.
-
- @return The new 32-bit value.
-
-**/
-UINT32
-EFIAPI
-BitFieldAndThenOr32 (
- IN UINT32 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT32 AndData,
- IN UINT32 OrData
- );
-
-
-/**
- Returns a bit field from a 64-bit value.
-
- Returns the bitfield specified by the StartBit and the EndBit from Operand.
-
- If 64-bit operations are not supported, then ASSERT().
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
-
- @return The bit field read.
-
-**/
-UINT64
-EFIAPI
-BitFieldRead64 (
- IN UINT64 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit
- );
-
-
-/**
- Writes a bit field to a 64-bit value, and returns the result.
-
- Writes Value to the bit field specified by the StartBit and the EndBit in
- Operand. All other bits in Operand are preserved. The new 64-bit value is
- returned.
-
- If 64-bit operations are not supported, then ASSERT().
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param Value New value of the bit field.
-
- @return The new 64-bit value.
-
-**/
-UINT64
-EFIAPI
-BitFieldWrite64 (
- IN UINT64 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 Value
- );
-
-
-/**
- Reads a bit field from a 64-bit value, performs a bitwise OR, and returns the
- result.
-
- Performs a bitwise inclusive OR between the bit field specified by StartBit
- and EndBit in Operand and the value specified by OrData. All other bits in
- Operand are preserved. The new 64-bit value is returned.
-
- If 64-bit operations are not supported, then ASSERT().
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param OrData The value to OR with the read value from the value
-
- @return The new 64-bit value.
-
-**/
-UINT64
-EFIAPI
-BitFieldOr64 (
- IN UINT64 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 OrData
- );
-
-
-/**
- Reads a bit field from a 64-bit value, performs a bitwise AND, and returns
- the result.
-
- Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData. All other bits in Operand are
- preserved. The new 64-bit value is returned.
-
- If 64-bit operations are not supported, then ASSERT().
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param AndData The value to AND with the read value from the value
-
- @return The new 64-bit value.
-
-**/
-UINT64
-EFIAPI
-BitFieldAnd64 (
- IN UINT64 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 AndData
- );
-
-
-/**
- Reads a bit field from a 64-bit value, performs a bitwise AND followed by a
- bitwise OR, and returns the result.
-
- Performs a bitwise AND between the bit field specified by StartBit and EndBit
- in Operand and the value specified by AndData, followed by a bitwise
- inclusive OR with value specified by OrData. All other bits in Operand are
- preserved. The new 64-bit value is returned.
-
- If 64-bit operations are not supported, then ASSERT().
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Operand Operand on which to perform the bitfield operation.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param AndData The value to AND with the read value from the value.
- @param OrData The value to OR with the result of the AND operation.
-
- @return The new 64-bit value.
-
-**/
-UINT64
-EFIAPI
-BitFieldAndThenOr64 (
- IN UINT64 Operand,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 AndData,
- IN UINT64 OrData
- );
-
-
-//
-// Base Library Synchronization Functions
-//
-
-/**
- Retrieves the architecture specific spin lock alignment requirements for
- optimal spin lock performance.
-
- This function retrieves the spin lock alignment requirements for optimal
- performance on a given CPU architecture. The spin lock alignment must be a
- power of two and is returned by this function. If there are no alignment
- requirements, then 1 must be returned. The spin lock synchronization
- functions must function correctly if the spin lock size and alignment values
- returned by this function are not used at all. These values are hints to the
- consumers of the spin lock synchronization functions to obtain optimal spin
- lock performance.
-
- @return The architecture specific spin lock alignment.
-
-**/
-UINTN
-EFIAPI
-GetSpinLockProperties (
- VOID
- );
-
-
-/**
- Initializes a spin lock to the released state and returns the spin lock.
-
- This function initializes the spin lock specified by SpinLock to the released
- state, and returns SpinLock. Optimal performance can be achieved by calling
- GetSpinLockProperties() to determine the size and alignment requirements for
- SpinLock.
-
- If SpinLock is NULL, then ASSERT().
-
- @param SpinLock A pointer to the spin lock to initialize to the released
- state.
-
- @return SpinLock
-
-**/
-SPIN_LOCK *
-EFIAPI
-InitializeSpinLock (
- IN SPIN_LOCK *SpinLock
- );
-
-
-/**
- Waits until a spin lock can be placed in the acquired state.
-
- This function checks the state of the spin lock specified by SpinLock. If
- SpinLock is in the released state, then this function places SpinLock in the
- acquired state and returns SpinLock. Otherwise, this function waits
- indefinitely for the spin lock to be released, and then places it in the
- acquired state and returns SpinLock. All state transitions of SpinLock must
- be performed using MP safe mechanisms.
-
- If SpinLock is NULL, then ASSERT().
- If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
- If PcdSpinLockTimeout is not zero, and SpinLock is can not be acquired in
- PcdSpinLockTimeout microseconds, then ASSERT().
-
- @param SpinLock A pointer to the spin lock to place in the acquired state.
-
- @return SpinLock
-
-**/
-SPIN_LOCK *
-EFIAPI
-AcquireSpinLock (
- IN SPIN_LOCK *SpinLock
- );
-
-
-/**
- Attempts to place a spin lock in the acquired state.
-
- This function checks the state of the spin lock specified by SpinLock. If
- SpinLock is in the released state, then this function places SpinLock in the
- acquired state and returns TRUE. Otherwise, FALSE is returned. All state
- transitions of SpinLock must be performed using MP safe mechanisms.
-
- If SpinLock is NULL, then ASSERT().
- If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
-
- @param SpinLock A pointer to the spin lock to place in the acquired state.
-
- @retval TRUE SpinLock was placed in the acquired state.
- @retval FALSE SpinLock could not be acquired.
-
-**/
-BOOLEAN
-EFIAPI
-AcquireSpinLockOrFail (
- IN SPIN_LOCK *SpinLock
- );
-
-
-/**
- Releases a spin lock.
-
- This function places the spin lock specified by SpinLock in the release state
- and returns SpinLock.
-
- If SpinLock is NULL, then ASSERT().
- If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
-
- @param SpinLock A pointer to the spin lock to release.
-
- @return SpinLock
-
-**/
-SPIN_LOCK *
-EFIAPI
-ReleaseSpinLock (
- IN SPIN_LOCK *SpinLock
- );
-
-
-/**
- Performs an atomic increment of an 32-bit unsigned integer.
-
- Performs an atomic increment of the 32-bit unsigned integer specified by
- Value and returns the incremented value. The increment operation must be
- performed using MP safe mechanisms. The state of the return value is not
- guaranteed to be MP safe.
-
- If Value is NULL, then ASSERT().
-
- @param Value A pointer to the 32-bit value to increment.
-
- @return The incremented value.
-
-**/
-UINT32
-EFIAPI
-InterlockedIncrement (
- IN UINT32 *Value
- );
-
-
-/**
- Performs an atomic decrement of an 32-bit unsigned integer.
-
- Performs an atomic decrement of the 32-bit unsigned integer specified by
- Value and returns the decremented value. The decrement operation must be
- performed using MP safe mechanisms. The state of the return value is not
- guaranteed to be MP safe.
-
- If Value is NULL, then ASSERT().
-
- @param Value A pointer to the 32-bit value to decrement.
-
- @return The decremented value.
-
-**/
-UINT32
-EFIAPI
-InterlockedDecrement (
- IN UINT32 *Value
- );
-
-
-/**
- Performs an atomic compare exchange operation on a 32-bit unsigned integer.
-
- Performs an atomic compare exchange operation on the 32-bit unsigned integer
- specified by Value. If Value is equal to CompareValue, then Value is set to
- ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue,
- then Value is returned. The compare exchange operation must be performed using
- MP safe mechanisms.
-
- If Value is NULL, then ASSERT().
-
- @param Value A pointer to the 32-bit value for the compare exchange
- operation.
- @param CompareValue 32-bit value used in compare operation.
- @param ExchangeValue 32-bit value used in exchange operation.
-
- @return The original *Value before exchange.
-
-**/
-UINT32
-EFIAPI
-InterlockedCompareExchange32 (
- IN OUT UINT32 *Value,
- IN UINT32 CompareValue,
- IN UINT32 ExchangeValue
- );
-
-
-/**
- Performs an atomic compare exchange operation on a 64-bit unsigned integer.
-
- Performs an atomic compare exchange operation on the 64-bit unsigned integer specified
- by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and
- CompareValue is returned. If Value is not equal to CompareValue, then Value is returned.
- The compare exchange operation must be performed using MP safe mechanisms.
-
- If Value is NULL, then ASSERT().
-
- @param Value A pointer to the 64-bit value for the compare exchange
- operation.
- @param CompareValue 64-bit value used in compare operation.
- @param ExchangeValue 64-bit value used in exchange operation.
-
- @return The original *Value before exchange.
-
-**/
-UINT64
-EFIAPI
-InterlockedCompareExchange64 (
- IN OUT UINT64 *Value,
- IN UINT64 CompareValue,
- IN UINT64 ExchangeValue
- );
-
-
-/**
- Performs an atomic compare exchange operation on a pointer value.
-
- Performs an atomic compare exchange operation on the pointer value specified
- by Value. If Value is equal to CompareValue, then Value is set to
- ExchangeValue and CompareValue is returned. If Value is not equal to
- CompareValue, then Value is returned. The compare exchange operation must be
- performed using MP safe mechanisms.
-
- If Value is NULL, then ASSERT().
-
- @param Value A pointer to the pointer value for the compare exchange
- operation.
- @param CompareValue Pointer value used in compare operation.
- @param ExchangeValue Pointer value used in exchange operation.
-
-**/
-VOID *
-EFIAPI
-InterlockedCompareExchangePointer (
- IN OUT VOID **Value,
- IN VOID *CompareValue,
- IN VOID *ExchangeValue
- );
-
-
-//
-// Base Library Checksum Functions
-//
-
-/**
- Calculate the sum of all elements in a buffer in unit of UINT8.
- During calculation, the carry bits are dropped.
-
- This function calculates the sum of all elements in a buffer
- in unit of UINT8. The carry bits in result of addition are dropped.
- The result is returned as UINT8. If Length is Zero, then Zero is
- returned.
-
- If Buffer is NULL, then ASSERT().
- If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
-
- @param Buffer Pointer to the buffer to carry out the sum operation.
- @param Length The size, in bytes, of Buffer .
-
- @return Sum The sum of Buffer with carry bits dropped during additions.
-
-**/
-UINT8
-EFIAPI
-CalculateSum8 (
- IN CONST UINT8 *Buffer,
- IN UINTN Length
- );
-
-
-/**
- Returns the two's complement checksum of all elements in a buffer
- of 8-bit values.
-
- This function first calculates the sum of the 8-bit values in the
- buffer specified by Buffer and Length. The carry bits in the result
- of addition are dropped. Then, the two's complement of the sum is
- returned. If Length is 0, then 0 is returned.
-
- If Buffer is NULL, then ASSERT().
- If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
-
-
- @param Buffer Pointer to the buffer to carry out the checksum operation.
- @param Length The size, in bytes, of Buffer.
-
- @return Checksum The 2's complement checksum of Buffer.
-
-**/
-UINT8
-EFIAPI
-CalculateCheckSum8 (
- IN CONST UINT8 *Buffer,
- IN UINTN Length
- );
-
-
-/**
- Returns the sum of all elements in a buffer of 16-bit values. During
- calculation, the carry bits are dropped.
-
- This function calculates the sum of the 16-bit values in the buffer
- specified by Buffer and Length. The carry bits in result of addition are dropped.
- The 16-bit result is returned. If Length is 0, then 0 is returned.
-
- If Buffer is NULL, then ASSERT().
- If Buffer is not aligned on a 16-bit boundary, then ASSERT().
- If Length is not aligned on a 16-bit boundary, then ASSERT().
- If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
-
- @param Buffer Pointer to the buffer to carry out the sum operation.
- @param Length The size, in bytes, of Buffer.
-
- @return Sum The sum of Buffer with carry bits dropped during additions.
-
-**/
-UINT16
-EFIAPI
-CalculateSum16 (
- IN CONST UINT16 *Buffer,
- IN UINTN Length
- );
-
-
-/**
- Returns the two's complement checksum of all elements in a buffer of
- 16-bit values.
-
- This function first calculates the sum of the 16-bit values in the buffer
- specified by Buffer and Length. The carry bits in the result of addition
- are dropped. Then, the two's complement of the sum is returned. If Length
- is 0, then 0 is returned.
-
- If Buffer is NULL, then ASSERT().
- If Buffer is not aligned on a 16-bit boundary, then ASSERT().
- If Length is not aligned on a 16-bit boundary, then ASSERT().
- If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
-
- @param Buffer Pointer to the buffer to carry out the checksum operation.
- @param Length The size, in bytes, of Buffer.
-
- @return Checksum The 2's complement checksum of Buffer.
-
-**/
-UINT16
-EFIAPI
-CalculateCheckSum16 (
- IN CONST UINT16 *Buffer,
- IN UINTN Length
- );
-
-
-/**
- Returns the sum of all elements in a buffer of 32-bit values. During
- calculation, the carry bits are dropped.
-
- This function calculates the sum of the 32-bit values in the buffer
- specified by Buffer and Length. The carry bits in result of addition are dropped.
- The 32-bit result is returned. If Length is 0, then 0 is returned.
-
- If Buffer is NULL, then ASSERT().
- If Buffer is not aligned on a 32-bit boundary, then ASSERT().
- If Length is not aligned on a 32-bit boundary, then ASSERT().
- If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
-
- @param Buffer Pointer to the buffer to carry out the sum operation.
- @param Length The size, in bytes, of Buffer.
-
- @return Sum The sum of Buffer with carry bits dropped during additions.
-
-**/
-UINT32
-EFIAPI
-CalculateSum32 (
- IN CONST UINT32 *Buffer,
- IN UINTN Length
- );
-
-
-/**
- Returns the two's complement checksum of all elements in a buffer of
- 32-bit values.
-
- This function first calculates the sum of the 32-bit values in the buffer
- specified by Buffer and Length. The carry bits in the result of addition
- are dropped. Then, the two's complement of the sum is returned. If Length
- is 0, then 0 is returned.
-
- If Buffer is NULL, then ASSERT().
- If Buffer is not aligned on a 32-bit boundary, then ASSERT().
- If Length is not aligned on a 32-bit boundary, then ASSERT().
- If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
-
- @param Buffer Pointer to the buffer to carry out the checksum operation.
- @param Length The size, in bytes, of Buffer.
-
- @return Checksum The 2's complement checksum of Buffer.
-
-**/
-UINT32
-EFIAPI
-CalculateCheckSum32 (
- IN CONST UINT32 *Buffer,
- IN UINTN Length
- );
-
-
-/**
- Returns the sum of all elements in a buffer of 64-bit values. During
- calculation, the carry bits are dropped.
-
- This function calculates the sum of the 64-bit values in the buffer
- specified by Buffer and Length. The carry bits in result of addition are dropped.
- The 64-bit result is returned. If Length is 0, then 0 is returned.
-
- If Buffer is NULL, then ASSERT().
- If Buffer is not aligned on a 64-bit boundary, then ASSERT().
- If Length is not aligned on a 64-bit boundary, then ASSERT().
- If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
-
- @param Buffer Pointer to the buffer to carry out the sum operation.
- @param Length The size, in bytes, of Buffer.
-
- @return Sum The sum of Buffer with carry bits dropped during additions.
-
-**/
-UINT64
-EFIAPI
-CalculateSum64 (
- IN CONST UINT64 *Buffer,
- IN UINTN Length
- );
-
-
-/**
- Returns the two's complement checksum of all elements in a buffer of
- 64-bit values.
-
- This function first calculates the sum of the 64-bit values in the buffer
- specified by Buffer and Length. The carry bits in the result of addition
- are dropped. Then, the two's complement of the sum is returned. If Length
- is 0, then 0 is returned.
-
- If Buffer is NULL, then ASSERT().
- If Buffer is not aligned on a 64-bit boundary, then ASSERT().
- If Length is not aligned on a 64-bit boundary, then ASSERT().
- If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
-
- @param Buffer Pointer to the buffer to carry out the checksum operation.
- @param Length The size, in bytes, of Buffer.
-
- @return Checksum The 2's complement checksum of Buffer.
-
-**/
-UINT64
-EFIAPI
-CalculateCheckSum64 (
- IN CONST UINT64 *Buffer,
- IN UINTN Length
- );
-
-
-//
-// Base Library CPU Functions
-//
-typedef
-VOID
-(EFIAPI *SWITCH_STACK_ENTRY_POINT) (
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2 OPTIONAL
- );
-
-
-/**
- Used to serialize load and store operations.
-
- All loads and stores that proceed calls to this function are guaranteed to be
- globally visible when this function returns.
-
-**/
-VOID
-EFIAPI
-MemoryFence (
- VOID
- );
-
-
-/**
- Saves the current CPU context that can be restored with a call to LongJump()
- and returns 0.
-
- Saves the current CPU context in the buffer specified by JumpBuffer and
- returns 0. The initial call to SetJump() must always return 0. Subsequent
- calls to LongJump() cause a non-zero value to be returned by SetJump().
-
- If JumpBuffer is NULL, then ASSERT().
- For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
-
- @param JumpBuffer A pointer to CPU context buffer.
-
- @retval 0 Indicates a return from SetJump().
-
-**/
-UINTN
-EFIAPI
-SetJump (
- OUT BASE_LIBRARY_JUMP_BUFFER *JumpBuffer
- );
-
-
-/**
- Restores the CPU context that was saved with SetJump().
-
- Restores the CPU context from the buffer specified by JumpBuffer. This
- function never returns to the caller. Instead is resumes execution based on
- the state of JumpBuffer.
-
- If JumpBuffer is NULL, then ASSERT().
- For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
- If Value is 0, then ASSERT().
-
- @param JumpBuffer A pointer to CPU context buffer.
- @param Value The value to return when the SetJump() context is
- restored and must be non-zero.
-
-**/
-VOID
-EFIAPI
-LongJump (
- IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer,
- IN UINTN Value
- );
-
-
-/**
- Enables CPU interrupts.
-
- Enables CPU interrupts.
-
-**/
-VOID
-EFIAPI
-EnableInterrupts (
- VOID
- );
-
-
-/**
- Disables CPU interrupts.
-
- Disables CPU interrupts.
-
-**/
-VOID
-EFIAPI
-DisableInterrupts (
- VOID
- );
-
-
-/**
- Disables CPU interrupts and returns the interrupt state prior to the disable
- operation.
-
- Disables CPU interrupts and returns the interrupt state prior to the disable
- operation.
-
- @retval TRUE CPU interrupts were enabled on entry to this call.
- @retval FALSE CPU interrupts were disabled on entry to this call.
-
-**/
-BOOLEAN
-EFIAPI
-SaveAndDisableInterrupts (
- VOID
- );
-
-
-/**
- Enables CPU interrupts for the smallest window required to capture any
- pending interrupts.
-
- Enables CPU interrupts for the smallest window required to capture any
- pending interrupts.
-
-**/
-VOID
-EFIAPI
-EnableDisableInterrupts (
- VOID
- );
-
-
-/**
- Retrieves the current CPU interrupt state.
-
- Retrieves the current CPU interrupt state. Returns TRUE is interrupts are
- currently enabled. Otherwise returns FALSE.
-
- @retval TRUE CPU interrupts are enabled.
- @retval FALSE CPU interrupts are disabled.
-
-**/
-BOOLEAN
-EFIAPI
-GetInterruptState (
- VOID
- );
-
-
-/**
- Set the current CPU interrupt state.
-
- Sets the current CPU interrupt state to the state specified by
- InterruptState. If InterruptState is TRUE, then interrupts are enabled. If
- InterruptState is FALSE, then interrupts are disabled. InterruptState is
- returned.
-
- @param InterruptState TRUE if interrupts should enabled. FALSE if
- interrupts should be disabled.
-
- @return InterruptState
-
-**/
-BOOLEAN
-EFIAPI
-SetInterruptState (
- IN BOOLEAN InterruptState
- );
-
-
-/**
- Requests CPU to pause for a short period of time.
-
- Requests CPU to pause for a short period of time. Typically used in MP
- systems to prevent memory starvation while waiting for a spin lock.
-
-**/
-VOID
-EFIAPI
-CpuPause (
- VOID
- );
-
-
-/**
- Transfers control to a function starting with a new stack.
-
- Transfers control to the function specified by EntryPoint using the
- new stack specified by NewStack and passing in the parameters specified
- by Context1 and Context2. Context1 and Context2 are optional and may
- be NULL. The function EntryPoint must never return. This function
- supports a variable number of arguments following the NewStack parameter.
- These additional arguments are ignored on IA-32, x64, and EBC.
- IPF CPUs expect one additional parameter of type VOID * that specifies
- the new backing store pointer.
-
- If EntryPoint is NULL, then ASSERT().
- If NewStack is NULL, then ASSERT().
-
- @param EntryPoint A pointer to function to call with the new stack.
- @param Context1 A pointer to the context to pass into the EntryPoint
- function.
- @param Context2 A pointer to the context to pass into the EntryPoint
- function.
- @param NewStack A pointer to the new stack to use for the EntryPoint
- function.
-
-**/
-VOID
-EFIAPI
-SwitchStack (
- IN SWITCH_STACK_ENTRY_POINT EntryPoint,
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2, OPTIONAL
- IN VOID *NewStack,
- ...
- );
-
-
-/**
- Generates a breakpoint on the CPU.
-
- Generates a breakpoint on the CPU. The breakpoint must be implemented such
- that code can resume normal execution after the breakpoint.
-
-**/
-VOID
-EFIAPI
-CpuBreakpoint (
- VOID
- );
-
-
-/**
- Executes an infinite loop.
-
- Forces the CPU to execute an infinite loop. A debugger may be used to skip
- past the loop and the code that follows the loop must execute properly. This
- implies that the infinite loop must not cause the code that follow it to be
- optimized away.
-
-**/
-VOID
-EFIAPI
-CpuDeadLoop (
- VOID
- );
-
-
-#if defined (MDE_CPU_IPF)
-
-/**
- Flush a range of cache lines in the cache coherency domain of the calling
- CPU.
-
- Invalidates the cache lines specified by Address and Length. If Address is
- not aligned on a cache line boundary, then entire cache line containing
- Address is invalidated. If Address + Length is not aligned on a cache line
- boundary, then the entire instruction cache line containing Address + Length
- -1 is invalidated. This function may choose to invalidate the entire
- instruction cache if that is more efficient than invalidating the specified
- range. If Length is 0, the no instruction cache lines are invalidated.
- Address is returned.
-
- If Length is greater than (MAX_ADDRESS - Address + 1), then ASSERT().
-
- @param Address The base address of the instruction lines to invalidate. If
- the CPU is in a physical addressing mode, then Address is a
- physical address. If the CPU is in a virtual addressing mode,
- then Address is a virtual address.
-
- @param Length The number of bytes to invalidate from the instruction cache.
-
- @return Address
-
-**/
-VOID *
-EFIAPI
-IpfFlushCacheRange (
- IN VOID *Address,
- IN UINTN Length
- );
-
-
-/**
- Executes a FC instruction
- Executes a FC instruction on the cache line specified by Address.
- The cache line size affected is at least 32-bytes (aligned on a 32-byte boundary).
- An implementation may flush a larger region. This function is only available on IPF.
-
- @param Address The Address of cache line to be flushed.
-
- @return The address of FC instruction executed.
-
-**/
-UINT64
-EFIAPI
-AsmFc (
- IN UINT64 Address
- );
-
-
-/**
- Executes a FC.I instruction.
- Executes a FC.I instruction on the cache line specified by Address.
- The cache line size affected is at least 32-bytes (aligned on a 32-byte boundary).
- An implementation may flush a larger region. This function is only available on IPF.
-
- @param Address The Address of cache line to be flushed.
-
- @return The address of FC.I instruction executed.
-
-**/
-UINT64
-EFIAPI
-AsmFci (
- IN UINT64 Address
- );
-
-
-/**
- Reads the current value of a Processor Identifier Register (CPUID).
- The Index of largest implemented CPUID (One less than the number of implemented CPUID
- registers) is determined by CPUID [3] bits {7:0}.
- No parameter checking is performed on Index. If the Index value is beyond the
- implemented CPUID register range, a Reserved Register/Field fault may occur. The caller
- must either guarantee that Index is valid, or the caller must set up fault handlers to
- catch the faults. This function is only available on IPF.
-
- @param Index The 8-bit Processor Identifier Register index to read.
-
- @return The current value of Processor Identifier Register specified by Index.
-
-**/
-UINT64
-EFIAPI
-AsmReadCpuid (
- IN UINT8 Index
- );
-
-
-/**
- Reads the current value of 64-bit Processor Status Register (PSR).
- This function is only available on IPF.
-
- @return The current value of PSR.
-
-**/
-UINT64
-EFIAPI
-AsmReadPsr (
- VOID
- );
-
-
-/**
- Writes the current value of 64-bit Processor Status Register (PSR).
- No parameter checking is performed on Value. All bits of Value corresponding to
- reserved fields of PSR must be 0 or a Reserved Register/Field fault may occur. The caller must either guarantee that Value is valid, or the caller must set up fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to PSR.
-
- @return The 64-bit value written to the PSR.
-
-**/
-UINT64
-EFIAPI
-AsmWritePsr (
- IN UINT64 Value
- );
-
-
-/**
- Reads the current value of 64-bit Kernel Register #0 (KR0).
- This function is only available on IPF.
-
- @return The current value of KR0.
-
-**/
-UINT64
-EFIAPI
-AsmReadKr0 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit Kernel Register #1 (KR1).
- This function is only available on IPF.
-
- @return The current value of KR1.
-
-**/
-UINT64
-EFIAPI
-AsmReadKr1 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit Kernel Register #2 (KR2).
- This function is only available on IPF.
-
- @return The current value of KR2.
-
-**/
-UINT64
-EFIAPI
-AsmReadKr2 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit Kernel Register #3 (KR3).
- This function is only available on IPF.
-
- @return The current value of KR3.
-
-**/
-UINT64
-EFIAPI
-AsmReadKr3 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit Kernel Register #4 (KR4).
- This function is only available on IPF.
-
- @return The current value of KR4.
-
-**/
-UINT64
-EFIAPI
-AsmReadKr4 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit Kernel Register #5 (KR5).
- This function is only available on IPF.
-
- @return The current value of KR5.
-
-**/
-UINT64
-EFIAPI
-AsmReadKr5 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit Kernel Register #6 (KR6).
- This function is only available on IPF.
-
- @return The current value of KR6.
-
-**/
-UINT64
-EFIAPI
-AsmReadKr6 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit Kernel Register #7 (KR7).
- This function is only available on IPF.
-
- @return The current value of KR7.
-
-**/
-UINT64
-EFIAPI
-AsmReadKr7 (
- VOID
- );
-
-
-/**
- Write the current value of 64-bit Kernel Register #0 (KR0).
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to KR0.
-
- @return The 64-bit value written to the KR0.
-
-**/
-UINT64
-EFIAPI
-AsmWriteKr0 (
- IN UINT64 Value
- );
-
-
-/**
- Write the current value of 64-bit Kernel Register #1 (KR1).
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to KR1.
-
- @return The 64-bit value written to the KR1.
-
-**/
-UINT64
-EFIAPI
-AsmWriteKr1 (
- IN UINT64 Value
- );
-
-
-/**
- Write the current value of 64-bit Kernel Register #2 (KR2).
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to KR2.
-
- @return The 64-bit value written to the KR2.
-
-**/
-UINT64
-EFIAPI
-AsmWriteKr2 (
- IN UINT64 Value
- );
-
-
-/**
- Write the current value of 64-bit Kernel Register #3 (KR3).
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to KR3.
-
- @return The 64-bit value written to the KR3.
-
-**/
-UINT64
-EFIAPI
-AsmWriteKr3 (
- IN UINT64 Value
- );
-
-
-/**
- Write the current value of 64-bit Kernel Register #4 (KR4).
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to KR4.
-
- @return The 64-bit value written to the KR4.
-
-**/
-UINT64
-EFIAPI
-AsmWriteKr4 (
- IN UINT64 Value
- );
-
-
-/**
- Write the current value of 64-bit Kernel Register #5 (KR5).
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to KR5.
-
- @return The 64-bit value written to the KR5.
-
-**/
-UINT64
-EFIAPI
-AsmWriteKr5 (
- IN UINT64 Value
- );
-
-
-/**
- Write the current value of 64-bit Kernel Register #6 (KR6).
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to KR6.
-
- @return The 64-bit value written to the KR6.
-
-**/
-UINT64
-EFIAPI
-AsmWriteKr6 (
- IN UINT64 Value
- );
-
-
-/**
- Write the current value of 64-bit Kernel Register #7 (KR7).
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to KR7.
-
- @return The 64-bit value written to the KR7.
-
-**/
-UINT64
-EFIAPI
-AsmWriteKr7 (
- IN UINT64 Value
- );
-
-
-/**
- Reads the current value of Interval Timer Counter Register (ITC).
- This function is only available on IPF.
-
- @return The current value of ITC.
-
-**/
-UINT64
-EFIAPI
-AsmReadItc (
- VOID
- );
-
-
-/**
- Reads the current value of Interval Timer Vector Register (ITV).
- This function is only available on IPF.
-
- @return The current value of ITV.
-
-**/
-UINT64
-EFIAPI
-AsmReadItv (
- VOID
- );
-
-
-/**
- Reads the current value of Interval Timer Match Register (ITM).
- This function is only available on IPF.
-
- @return The current value of ITM.
-**/
-UINT64
-EFIAPI
-AsmReadItm (
- VOID
- );
-
-
-/**
- Writes the current value of 64-bit Interval Timer Counter Register (ITC).
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to ITC.
-
- @return The 64-bit value written to the ITC.
-
-**/
-UINT64
-EFIAPI
-AsmWriteItc (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Interval Timer Match Register (ITM).
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to ITM.
-
- @return The 64-bit value written to the ITM.
-
-**/
-UINT64
-EFIAPI
-AsmWriteItm (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Interval Timer Vector Register (ITV).
- No parameter checking is performed on Value. All bits of Value corresponding to
- reserved fields of ITV must be 0 or a Reserved Register/Field fault may occur.
- The caller must either guarantee that Value is valid, or the caller must set up
- fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to ITV.
-
- @return The 64-bit value written to the ITV.
-
-**/
-UINT64
-EFIAPI
-AsmWriteItv (
- IN UINT64 Value
- );
-
-
-/**
- Reads the current value of Default Control Register (DCR).
- This function is only available on IPF.
-
- @return The current value of DCR.
-
-**/
-UINT64
-EFIAPI
-AsmReadDcr (
- VOID
- );
-
-
-/**
- Reads the current value of Interruption Vector Address Register (IVA).
- This function is only available on IPF.
-
- @return The current value of IVA.
-**/
-UINT64
-EFIAPI
-AsmReadIva (
- VOID
- );
-
-
-/**
- Reads the current value of Page Table Address Register (PTA).
- This function is only available on IPF.
-
- @return The current value of PTA.
-
-**/
-UINT64
-EFIAPI
-AsmReadPta (
- VOID
- );
-
-
-/**
- Writes the current value of 64-bit Default Control Register (DCR).
- No parameter checking is performed on Value. All bits of Value corresponding to
- reserved fields of DCR must be 0 or a Reserved Register/Field fault may occur.
- The caller must either guarantee that Value is valid, or the caller must set up
- fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to DCR.
-
- @return The 64-bit value written to the DCR.
-
-**/
-UINT64
-EFIAPI
-AsmWriteDcr (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Interruption Vector Address Register (IVA).
- The size of vector table is 32 K bytes and is 32 K bytes aligned
- the low 15 bits of Value is ignored when written.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to IVA.
-
- @return The 64-bit value written to the IVA.
-
-**/
-UINT64
-EFIAPI
-AsmWriteIva (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Page Table Address Register (PTA).
- No parameter checking is performed on Value. All bits of Value corresponding to
- reserved fields of DCR must be 0 or a Reserved Register/Field fault may occur.
- The caller must either guarantee that Value is valid, or the caller must set up
- fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to PTA.
-
- @return The 64-bit value written to the PTA.
-**/
-UINT64
-EFIAPI
-AsmWritePta (
- IN UINT64 Value
- );
-
-
-/**
- Reads the current value of Local Interrupt ID Register (LID).
- This function is only available on IPF.
-
- @return The current value of LID.
-
-**/
-UINT64
-EFIAPI
-AsmReadLid (
- VOID
- );
-
-
-/**
- Reads the current value of External Interrupt Vector Register (IVR).
- This function is only available on IPF.
-
- @return The current value of IVR.
-
-**/
-UINT64
-EFIAPI
-AsmReadIvr (
- VOID
- );
-
-
-/**
- Reads the current value of Task Priority Register (TPR).
- This function is only available on IPF.
-
- @return The current value of TPR.
-
-**/
-UINT64
-EFIAPI
-AsmReadTpr (
- VOID
- );
-
-
-/**
- Reads the current value of External Interrupt Request Register #0 (IRR0).
- This function is only available on IPF.
-
- @return The current value of IRR0.
-
-**/
-UINT64
-EFIAPI
-AsmReadIrr0 (
- VOID
- );
-
-
-/**
- Reads the current value of External Interrupt Request Register #1 (IRR1).
- This function is only available on IPF.
-
- @return The current value of IRR1.
-
-**/
-UINT64
-EFIAPI
-AsmReadIrr1 (
- VOID
- );
-
-
-/**
- Reads the current value of External Interrupt Request Register #2 (IRR2).
- This function is only available on IPF.
-
- @return The current value of IRR2.
-
-**/
-UINT64
-EFIAPI
-AsmReadIrr2 (
- VOID
- );
-
-
-/**
- Reads the current value of External Interrupt Request Register #3 (IRR3).
- This function is only available on IPF.
-
- @return The current value of IRR3.
-
-**/
-UINT64
-EFIAPI
-AsmReadIrr3 (
- VOID
- );
-
-
-/**
- Reads the current value of Performance Monitor Vector Register (PMV).
- This function is only available on IPF.
-
- @return The current value of PMV.
-
-**/
-UINT64
-EFIAPI
-AsmReadPmv (
- VOID
- );
-
-
-/**
- Reads the current value of Corrected Machine Check Vector Register (CMCV).
- This function is only available on IPF.
-
- @return The current value of CMCV.
-
-**/
-UINT64
-EFIAPI
-AsmReadCmcv (
- VOID
- );
-
-
-/**
- Reads the current value of Local Redirection Register #0 (LRR0).
- This function is only available on IPF.
-
- @return The current value of LRR0.
-
-**/
-UINT64
-EFIAPI
-AsmReadLrr0 (
- VOID
- );
-
-
-/**
- Reads the current value of Local Redirection Register #1 (LRR1).
- This function is only available on IPF.
-
- @return The current value of LRR1.
-
-**/
-UINT64
-EFIAPI
-AsmReadLrr1 (
- VOID
- );
-
-
-/**
- Writes the current value of 64-bit Page Local Interrupt ID Register (LID).
- No parameter checking is performed on Value. All bits of Value corresponding to
- reserved fields of LID must be 0 or a Reserved Register/Field fault may occur.
- The caller must either guarantee that Value is valid, or the caller must set up
- fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to LID.
-
- @return The 64-bit value written to the LID.
-
-**/
-UINT64
-EFIAPI
-AsmWriteLid (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Task Priority Register (TPR).
- No parameter checking is performed on Value. All bits of Value corresponding to
- reserved fields of TPR must be 0 or a Reserved Register/Field fault may occur.
- The caller must either guarantee that Value is valid, or the caller must set up
- fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to TPR.
-
- @return The 64-bit value written to the TPR.
-
-**/
-UINT64
-EFIAPI
-AsmWriteTpr (
- IN UINT64 Value
- );
-
-
-/**
- Performs a write operation on End OF External Interrupt Register (EOI).
- Writes a value of 0 to the EOI Register. This function is only available on IPF.
-
-**/
-VOID
-EFIAPI
-AsmWriteEoi (
- VOID
- );
-
-
-/**
- Writes the current value of 64-bit Performance Monitor Vector Register (PMV).
- No parameter checking is performed on Value. All bits of Value corresponding
- to reserved fields of PMV must be 0 or a Reserved Register/Field fault may occur.
- The caller must either guarantee that Value is valid, or the caller must set up
- fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to PMV.
-
- @return The 64-bit value written to the PMV.
-
-**/
-UINT64
-EFIAPI
-AsmWritePmv (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Corrected Machine Check Vector Register (CMCV).
- No parameter checking is performed on Value. All bits of Value corresponding
- to reserved fields of CMCV must be 0 or a Reserved Register/Field fault may occur.
- The caller must either guarantee that Value is valid, or the caller must set up
- fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to CMCV.
-
- @return The 64-bit value written to the CMCV.
-
-**/
-UINT64
-EFIAPI
-AsmWriteCmcv (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Local Redirection Register #0 (LRR0).
- No parameter checking is performed on Value. All bits of Value corresponding
- to reserved fields of LRR0 must be 0 or a Reserved Register/Field fault may occur.
- The caller must either guarantee that Value is valid, or the caller must set up
- fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to LRR0.
-
- @return The 64-bit value written to the LRR0.
-
-**/
-UINT64
-EFIAPI
-AsmWriteLrr0 (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Local Redirection Register #1 (LRR1).
- No parameter checking is performed on Value. All bits of Value corresponding
- to reserved fields of LRR1 must be 0 or a Reserved Register/Field fault may occur.
- The caller must either guarantee that Value is valid, or the caller must
- set up fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to LRR1.
-
- @return The 64-bit value written to the LRR1.
-
-**/
-UINT64
-EFIAPI
-AsmWriteLrr1 (
- IN UINT64 Value
- );
-
-
-/**
- Reads the current value of Instruction Breakpoint Register (IBR).
-
- The Instruction Breakpoint Registers are used in pairs. The even numbered
- registers contain breakpoint addresses, and the odd numbered registers contain
- breakpoint mask conditions. At least 4 instruction registers pairs are implemented
- on all processor models. Implemented registers are contiguous starting with
- register 0. No parameter checking is performed on Index, and if the Index value
- is beyond the implemented IBR register range, a Reserved Register/Field fault may
- occur. The caller must either guarantee that Index is valid, or the caller must
- set up fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Index The 8-bit Instruction Breakpoint Register index to read.
-
- @return The current value of Instruction Breakpoint Register specified by Index.
-
-**/
-UINT64
-EFIAPI
-AsmReadIbr (
- IN UINT8 Index
- );
-
-
-/**
- Reads the current value of Data Breakpoint Register (DBR).
-
- The Data Breakpoint Registers are used in pairs. The even numbered registers
- contain breakpoint addresses, and odd numbered registers contain breakpoint
- mask conditions. At least 4 data registers pairs are implemented on all processor
- models. Implemented registers are contiguous starting with register 0.
- No parameter checking is performed on Index. If the Index value is beyond
- the implemented DBR register range, a Reserved Register/Field fault may occur.
- The caller must either guarantee that Index is valid, or the caller must set up
- fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Index The 8-bit Data Breakpoint Register index to read.
-
- @return The current value of Data Breakpoint Register specified by Index.
-
-**/
-UINT64
-EFIAPI
-AsmReadDbr (
- IN UINT8 Index
- );
-
-
-/**
- Reads the current value of Performance Monitor Configuration Register (PMC).
-
- All processor implementations provide at least 4 performance counters
- (PMC/PMD [4]...PMC/PMD [7] pairs), and 4 performance monitor counter overflow
- status registers (PMC [0]¡­ PMC [3]). Processor implementations may provide
- additional implementation-dependent PMC and PMD to increase the number of
- ¡®generic¡¯ performance counters (PMC/PMD pairs). The remainder of PMC and PMD
- register set is implementation dependent. No parameter checking is performed
- on Index. If the Index value is beyond the implemented PMC register range,
- zero value will be returned.
- This function is only available on IPF.
-
- @param Index The 8-bit Performance Monitor Configuration Register index to read.
-
- @return The current value of Performance Monitor Configuration Register
- specified by Index.
-
-**/
-UINT64
-EFIAPI
-AsmReadPmc (
- IN UINT8 Index
- );
-
-
-/**
- Reads the current value of Performance Monitor Data Register (PMD).
-
- All processor implementations provide at least 4 performance counters
- (PMC/PMD [4]...PMC/PMD [7] pairs), and 4 performance monitor counter
- overflow status registers (PMC [0]¡­ PMC [3]). Processor implementations may
- provide additional implementation-dependent PMC and PMD to increase the number
- of ¡®generic¡¯ performance counters (PMC/PMD pairs). The remainder of PMC and PMD
- register set is implementation dependent. No parameter checking is performed
- on Index. If the Index value is beyond the implemented PMD register range,
- zero value will be returned.
- This function is only available on IPF.
-
- @param Index The 8-bit Performance Monitor Data Register index to read.
-
- @return The current value of Performance Monitor Data Register specified by Index.
-
-**/
-UINT64
-EFIAPI
-AsmReadPmd (
- IN UINT8 Index
- );
-
-
-/**
- Writes the current value of 64-bit Instruction Breakpoint Register (IBR).
-
- Writes current value of Instruction Breakpoint Register specified by Index.
- The Instruction Breakpoint Registers are used in pairs. The even numbered
- registers contain breakpoint addresses, and odd numbered registers contain
- breakpoint mask conditions. At least 4 instruction registers pairs are implemented
- on all processor models. Implemented registers are contiguous starting with
- register 0. No parameter checking is performed on Index. If the Index value
- is beyond the implemented IBR register range, a Reserved Register/Field fault may
- occur. The caller must either guarantee that Index is valid, or the caller must
- set up fault handlers to catch the faults.
- This function is only available on IPF.
-
- @param Index The 8-bit Instruction Breakpoint Register index to write.
- @param Value The 64-bit value to write to IBR.
-
- @return The 64-bit value written to the IBR.
-
-**/
-UINT64
-EFIAPI
-AsmWriteIbr (
- IN UINT8 Index,
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Data Breakpoint Register (DBR).
-
- Writes current value of Data Breakpoint Register specified by Index.
- The Data Breakpoint Registers are used in pairs. The even numbered registers
- contain breakpoint addresses, and odd numbered registers contain breakpoint
- mask conditions. At least 4 data registers pairs are implemented on all processor
- models. Implemented registers are contiguous starting with register 0. No parameter
- checking is performed on Index. If the Index value is beyond the implemented
- DBR register range, a Reserved Register/Field fault may occur. The caller must
- either guarantee that Index is valid, or the caller must set up fault handlers to
- catch the faults.
- This function is only available on IPF.
-
- @param Index The 8-bit Data Breakpoint Register index to write.
- @param Value The 64-bit value to write to DBR.
-
- @return The 64-bit value written to the DBR.
-
-**/
-UINT64
-EFIAPI
-AsmWriteDbr (
- IN UINT8 Index,
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Performance Monitor Configuration Register (PMC).
-
- Writes current value of Performance Monitor Configuration Register specified by Index.
- All processor implementations provide at least 4 performance counters
- (PMC/PMD [4]...PMC/PMD [7] pairs), and 4 performance monitor counter overflow status
- registers (PMC [0]¡­ PMC [3]). Processor implementations may provide additional
- implementation-dependent PMC and PMD to increase the number of ¡®generic¡¯ performance
- counters (PMC/PMD pairs). The remainder of PMC and PMD register set is implementation
- dependent. No parameter checking is performed on Index. If the Index value is
- beyond the implemented PMC register range, the write is ignored.
- This function is only available on IPF.
-
- @param Index The 8-bit Performance Monitor Configuration Register index to write.
- @param Value The 64-bit value to write to PMC.
-
- @return The 64-bit value written to the PMC.
-
-**/
-UINT64
-EFIAPI
-AsmWritePmc (
- IN UINT8 Index,
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit Performance Monitor Data Register (PMD).
-
- Writes current value of Performance Monitor Data Register specified by Index.
- All processor implementations provide at least 4 performance counters
- (PMC/PMD [4]...PMC/PMD [7] pairs), and 4 performance monitor counter overflow
- status registers (PMC [0]¡­ PMC [3]). Processor implementations may provide
- additional implementation-dependent PMC and PMD to increase the number of ¡®generic¡¯
- performance counters (PMC/PMD pairs). The remainder of PMC and PMD register set
- is implementation dependent. No parameter checking is performed on Index. If the
- Index value is beyond the implemented PMD register range, the write is ignored.
- This function is only available on IPF.
-
- @param Index The 8-bit Performance Monitor Data Register index to write.
- @param Value The 64-bit value to write to PMD.
-
- @return The 64-bit value written to the PMD.
-
-**/
-UINT64
-EFIAPI
-AsmWritePmd (
- IN UINT8 Index,
- IN UINT64 Value
- );
-
-
-/**
- Reads the current value of 64-bit Global Pointer (GP).
-
- Reads and returns the current value of GP.
- This function is only available on IPF.
-
- @return The current value of GP.
-
-**/
-UINT64
-EFIAPI
-AsmReadGp (
- VOID
- );
-
-
-/**
- Write the current value of 64-bit Global Pointer (GP).
-
- Writes the current value of GP. The 64-bit value written to the GP is returned.
- No parameter checking is performed on Value.
- This function is only available on IPF.
-
- @param Value The 64-bit value to write to GP.
-
- @return The 64-bit value written to the GP.
-
-**/
-UINT64
-EFIAPI
-AsmWriteGp (
- IN UINT64 Value
- );
-
-
-/**
- Reads the current value of 64-bit Stack Pointer (SP).
-
- Reads and returns the current value of SP.
- This function is only available on IPF.
-
- @return The current value of SP.
-
-**/
-UINT64
-EFIAPI
-AsmReadSp (
- VOID
- );
-
-
-/**
- Determines if the CPU is currently executing in virtual, physical, or mixed mode.
-
- Determines the current execution mode of the CPU.
- If the CPU is in virtual mode(PSR.RT=1, PSR.DT=1, PSR.IT=1), then 1 is returned.
- If the CPU is in physical mode(PSR.RT=0, PSR.DT=0, PSR.IT=0), then 0 is returned.
- If the CPU is not in physical mode or virtual mode, then it is in mixed mode,
- and -1 is returned.
- This function is only available on IPF.
-
- @return 1 The CPU is in virtual mode.
- @return 0 The CPU is in physical mode.
- @return -1 The CPU is in mixed mode.
-
-**/
-INT64
-EFIAPI
-AsmCpuVirtual (
- VOID
- );
-
-
-/**
- Makes a PAL procedure call.
-
- This is a wrapper function to make a PAL procedure call. Based on the Index
- value this API will make static or stacked PAL call. The following table
- describes the usage of PAL Procedure Index Assignment. Architected procedures
- may be designated as required or optional. If a PAL procedure is specified
- as optional, a unique return code of 0xFFFFFFFFFFFFFFFF is returned in the
- Status field of the PAL_CALL_RETURN structure.
- This indicates that the procedure is not present in this PAL implementation.
- It is the caller¡¯s responsibility to check for this return code after calling
- any optional PAL procedure.
- No parameter checking is performed on the 5 input parameters, but there are
- some common rules that the caller should follow when making a PAL call. Any
- address passed to PAL as buffers for return parameters must be 8-byte aligned.
- Unaligned addresses may cause undefined results. For those parameters defined
- as reserved or some fields defined as reserved must be zero filled or the invalid
- argument return value may be returned or undefined result may occur during the
- execution of the procedure. If the PalEntryPoint does not point to a valid
- PAL entry point then the system behavior is undefined. This function is only
- available on IPF.
-
- @param PalEntryPoint The PAL procedure calls entry point.
- @param Index The PAL procedure Index number.
- @param Arg2 The 2nd parameter for PAL procedure calls.
- @param Arg3 The 3rd parameter for PAL procedure calls.
- @param Arg4 The 4th parameter for PAL procedure calls.
-
- @return structure returned from the PAL Call procedure, including the status and return value.
-
-**/
-PAL_CALL_RETURN
-EFIAPI
-AsmPalCall (
- IN UINT64 PalEntryPoint,
- IN UINT64 Index,
- IN UINT64 Arg2,
- IN UINT64 Arg3,
- IN UINT64 Arg4
- );
-
-
-/**
- Transfers control to a function starting with a new stack.
-
- Transfers control to the function specified by EntryPoint using the new stack
- specified by NewStack and passing in the parameters specified by Context1 and
- Context2. Context1 and Context2 are optional and may be NULL. The function
- EntryPoint must never return.
-
- If EntryPoint is NULL, then ASSERT().
- If NewStack is NULL, then ASSERT().
-
- @param EntryPoint A pointer to function to call with the new stack.
- @param Context1 A pointer to the context to pass into the EntryPoint
- function.
- @param Context2 A pointer to the context to pass into the EntryPoint
- function.
- @param NewStack A pointer to the new stack to use for the EntryPoint
- function.
- @param NewBsp A pointer to the new memory location for RSE backing
- store.
-
-**/
-VOID
-EFIAPI
-AsmSwitchStackAndBackingStore (
- IN SWITCH_STACK_ENTRY_POINT EntryPoint,
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2, OPTIONAL
- IN VOID *NewStack,
- IN VOID *NewBsp
- );
-
-
-//
-// Bugbug: This call should be removed after
-// the PalCall Instance issue has been fixed.
-//
-/**
- Performs a PAL call using static calling convention.
-
- An internal function to perform a PAL call using static calling convention.
-
- @param PalEntryPoint The entry point address of PAL. The address in ar.kr5
- would be used if this parameter were NULL on input.
- @param Arg1 The first argument of a PAL call.
- @param Arg1 The second argument of a PAL call.
- @param Arg1 The third argument of a PAL call.
- @param Arg1 The fourth argument of a PAL call.
-
- @return The values returned in r8, r9, r10 and r11.
-
-**/
-PAL_CALL_RETURN
-PalCallStatic (
- IN CONST VOID *PalEntryPoint,
- IN UINT64 Arg1,
- IN UINT64 Arg2,
- IN UINT64 Arg3,
- IN UINT64 Arg4
- );
-
-
-#elif defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
-//
-// IA32 and X64 Specific Functions
-//
-//
-// Byte packed structure for 16-bit Real Mode EFLAGS
-//
-typedef union {
- struct {
- UINT32 CF:1; // Carry Flag
- UINT32 Reserved_0:1; // Reserved
- UINT32 PF:1; // Parity Flag
- UINT32 Reserved_1:1; // Reserved
- UINT32 AF:1; // Auxiliary Carry Flag
- UINT32 Reserved_2:1; // Reserved
- UINT32 ZF:1; // Zero Flag
- UINT32 SF:1; // Sign Flag
- UINT32 TF:1; // Trap Flag
- UINT32 IF:1; // Interrupt Enable Flag
- UINT32 DF:1; // Direction Flag
- UINT32 OF:1; // Overflow Flag
- UINT32 IOPL:2; // I/O Privilege Level
- UINT32 NT:1; // Nested Task
- UINT32 Reserved_3:1; // Reserved
- } Bits;
- UINT16 Uint16;
-} IA32_FLAGS16;
-
-//
-// Byte packed structure for EFLAGS/RFLAGS
-// 32-bits on IA-32
-// 64-bits on X64. The upper 32-bits on X64 are reserved
-//
-typedef union {
- struct {
- UINT32 CF:1; // Carry Flag
- UINT32 Reserved_0:1; // Reserved
- UINT32 PF:1; // Parity Flag
- UINT32 Reserved_1:1; // Reserved
- UINT32 AF:1; // Auxiliary Carry Flag
- UINT32 Reserved_2:1; // Reserved
- UINT32 ZF:1; // Zero Flag
- UINT32 SF:1; // Sign Flag
- UINT32 TF:1; // Trap Flag
- UINT32 IF:1; // Interrupt Enable Flag
- UINT32 DF:1; // Direction Flag
- UINT32 OF:1; // Overflow Flag
- UINT32 IOPL:2; // I/O Privilege Level
- UINT32 NT:1; // Nested Task
- UINT32 Reserved_3:1; // Reserved
- UINT32 RF:1; // Resume Flag
- UINT32 VM:1; // Virtual 8086 Mode
- UINT32 AC:1; // Alignment Check
- UINT32 VIF:1; // Virtual Interrupt Flag
- UINT32 VIP:1; // Virtual Interrupt Pending
- UINT32 ID:1; // ID Flag
- UINT32 Reserved_4:10; // Reserved
- } Bits;
- UINTN UintN;
-} IA32_EFLAGS32;
-
-//
-// Byte packed structure for Control Register 0 (CR0)
-// 32-bits on IA-32
-// 64-bits on X64. The upper 32-bits on X64 are reserved
-//
-typedef union {
- struct {
- UINT32 PE:1; // Protection Enable
- UINT32 MP:1; // Monitor Coprocessor
- UINT32 EM:1; // Emulation
- UINT32 TS:1; // Task Switched
- UINT32 ET:1; // Extension Type
- UINT32 NE:1; // Numeric Error
- UINT32 Reserved_0:10; // Reserved
- UINT32 WP:1; // Write Protect
- UINT32 Reserved_1:1; // Reserved
- UINT32 AM:1; // Alignment Mask
- UINT32 Reserved_2:10; // Reserved
- UINT32 NW:1; // Mot Write-through
- UINT32 CD:1; // Cache Disable
- UINT32 PG:1; // Paging
- } Bits;
- UINTN UintN;
-} IA32_CR0;
-
-//
-// Byte packed structure for Control Register 4 (CR4)
-// 32-bits on IA-32
-// 64-bits on X64. The upper 32-bits on X64 are reserved
-//
-typedef union {
- struct {
- UINT32 VME:1; // Virtual-8086 Mode Extensions
- UINT32 PVI:1; // Protected-Mode Virtual Interrupts
- UINT32 TSD:1; // Time Stamp Disable
- UINT32 DE:1; // Debugging Extensions
- UINT32 PSE:1; // Page Size Extensions
- UINT32 PAE:1; // Physical Address Extension
- UINT32 MCE:1; // Machine Check Enable
- UINT32 PGE:1; // Page Global Enable
- UINT32 PCE:1; // Performance Monitoring Counter
- // Enable
- UINT32 OSFXSR:1; // Operating System Support for
- // FXSAVE and FXRSTOR instructions
- UINT32 OSXMMEXCPT:1; // Operating System Support for
- // Unmasked SIMD Floating Point
- // Exceptions
- UINT32 Reserved_0:2; // Reserved
- UINT32 VMXE:1; // VMX Enable
- UINT32 Reserved_1:18; // Reseved
- } Bits;
- UINTN UintN;
-} IA32_CR4;
-
-//
-// Byte packed structure for an IDTR, GDTR, LDTR descriptor
-/// @bug How to make this structure byte-packed in a compiler independent way?
-//
-#pragma pack (1)
-typedef struct {
- UINT16 Limit;
- UINTN Base;
-} IA32_DESCRIPTOR;
-#pragma pack ()
-
-#define IA32_IDT_GATE_TYPE_TASK 0x85
-#define IA32_IDT_GATE_TYPE_INTERRUPT_16 0x86
-#define IA32_IDT_GATE_TYPE_TRAP_16 0x87
-#define IA32_IDT_GATE_TYPE_INTERRUPT_32 0x8E
-#define IA32_IDT_GATE_TYPE_TRAP_32 0x8F
-
-//
-// Byte packed structure for an Interrupt Gate Descriptor
-//
-typedef union {
- struct {
- UINT32 OffsetLow:16; // Offset bits 15..0
- UINT32 Selector:16; // Selector
- UINT32 Reserved_0:8; // Reserved
- UINT32 GateType:8; // Gate Type. See #defines above
- UINT32 OffsetHigh:16; // Offset bits 31..16
- } Bits;
- UINT64 Uint64;
-} IA32_IDT_GATE_DESCRIPTOR;
-
-//
-// Byte packed structure for an FP/SSE/SSE2 context
-//
-typedef struct {
- UINT8 Buffer[512];
-} IA32_FX_BUFFER;
-
-//
-// Structures for the 16-bit real mode thunks
-//
-typedef struct {
- UINT32 Reserved1;
- UINT32 Reserved2;
- UINT32 Reserved3;
- UINT32 Reserved4;
- UINT8 BL;
- UINT8 BH;
- UINT16 Reserved5;
- UINT8 DL;
- UINT8 DH;
- UINT16 Reserved6;
- UINT8 CL;
- UINT8 CH;
- UINT16 Reserved7;
- UINT8 AL;
- UINT8 AH;
- UINT16 Reserved8;
-} IA32_BYTE_REGS;
-
-typedef struct {
- UINT16 DI;
- UINT16 Reserved1;
- UINT16 SI;
- UINT16 Reserved2;
- UINT16 BP;
- UINT16 Reserved3;
- UINT16 SP;
- UINT16 Reserved4;
- UINT16 BX;
- UINT16 Reserved5;
- UINT16 DX;
- UINT16 Reserved6;
- UINT16 CX;
- UINT16 Reserved7;
- UINT16 AX;
- UINT16 Reserved8;
-} IA32_WORD_REGS;
-
-typedef struct {
- UINT32 EDI;
- UINT32 ESI;
- UINT32 EBP;
- UINT32 ESP;
- UINT32 EBX;
- UINT32 EDX;
- UINT32 ECX;
- UINT32 EAX;
- UINT16 DS;
- UINT16 ES;
- UINT16 FS;
- UINT16 GS;
- IA32_EFLAGS32 EFLAGS;
- UINT32 Eip;
- UINT16 CS;
- UINT16 SS;
-} IA32_DWORD_REGS;
-
-typedef union {
- IA32_DWORD_REGS E;
- IA32_WORD_REGS X;
- IA32_BYTE_REGS H;
-} IA32_REGISTER_SET;
-
-//
-// Byte packed structure for an 16-bit real mode thunks
-//
-typedef struct {
- IA32_REGISTER_SET *RealModeState;
- VOID *RealModeBuffer;
- UINT32 RealModeBufferSize;
- UINT32 ThunkAttributes;
-} THUNK_CONTEXT;
-
-#define THUNK_ATTRIBUTE_BIG_REAL_MODE 0x00000001
-#define THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 0x00000002
-#define THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL 0x00000004
-
-/**
- Retrieves CPUID information.
-
- Executes the CPUID instruction with EAX set to the value specified by Index.
- This function always returns Index.
- If Eax is not NULL, then the value of EAX after CPUID is returned in Eax.
- If Ebx is not NULL, then the value of EBX after CPUID is returned in Ebx.
- If Ecx is not NULL, then the value of ECX after CPUID is returned in Ecx.
- If Edx is not NULL, then the value of EDX after CPUID is returned in Edx.
- This function is only available on IA-32 and X64.
-
- @param Index The 32-bit value to load into EAX prior to invoking the CPUID
- instruction.
- @param Eax Pointer to the 32-bit EAX value returned by the CPUID
- instruction. This is an optional parameter that may be NULL.
- @param Ebx Pointer to the 32-bit EBX value returned by the CPUID
- instruction. This is an optional parameter that may be NULL.
- @param Ecx Pointer to the 32-bit ECX value returned by the CPUID
- instruction. This is an optional parameter that may be NULL.
- @param Edx Pointer to the 32-bit EDX value returned by the CPUID
- instruction. This is an optional parameter that may be NULL.
-
- @return Index
-
-**/
-UINT32
-EFIAPI
-AsmCpuid (
- IN UINT32 Index,
- OUT UINT32 *Eax, OPTIONAL
- OUT UINT32 *Ebx, OPTIONAL
- OUT UINT32 *Ecx, OPTIONAL
- OUT UINT32 *Edx OPTIONAL
- );
-
-
-/**
- Retrieves CPUID information using an extended leaf identifier.
-
- Executes the CPUID instruction with EAX set to the value specified by Index
- and ECX set to the value specified by SubIndex. This function always returns
- Index. This function is only available on IA-32 and x64.
-
- If Eax is not NULL, then the value of EAX after CPUID is returned in Eax.
- If Ebx is not NULL, then the value of EBX after CPUID is returned in Ebx.
- If Ecx is not NULL, then the value of ECX after CPUID is returned in Ecx.
- If Edx is not NULL, then the value of EDX after CPUID is returned in Edx.
-
- @param Index The 32-bit value to load into EAX prior to invoking the
- CPUID instruction.
- @param SubIndex The 32-bit value to load into ECX prior to invoking the
- CPUID instruction.
- @param Eax Pointer to the 32-bit EAX value returned by the CPUID
- instruction. This is an optional parameter that may be
- NULL.
- @param Ebx Pointer to the 32-bit EBX value returned by the CPUID
- instruction. This is an optional parameter that may be
- NULL.
- @param Ecx Pointer to the 32-bit ECX value returned by the CPUID
- instruction. This is an optional parameter that may be
- NULL.
- @param Edx Pointer to the 32-bit EDX value returned by the CPUID
- instruction. This is an optional parameter that may be
- NULL.
-
- @return Index
-
-**/
-UINT32
-EFIAPI
-AsmCpuidEx (
- IN UINT32 Index,
- IN UINT32 SubIndex,
- OUT UINT32 *Eax, OPTIONAL
- OUT UINT32 *Ebx, OPTIONAL
- OUT UINT32 *Ecx, OPTIONAL
- OUT UINT32 *Edx OPTIONAL
- );
-
-
-/**
- Returns the lower 32-bits of a Machine Specific Register(MSR).
-
- Reads and returns the lower 32-bits of the MSR specified by Index.
- No parameter checking is performed on Index, and some Index values may cause
- CPU exceptions. The caller must either guarantee that Index is valid, or the
- caller must set up exception handlers to catch the exceptions. This function
- is only available on IA-32 and X64.
-
- @param Index The 32-bit MSR index to read.
-
- @return The lower 32 bits of the MSR identified by Index.
-
-**/
-UINT32
-EFIAPI
-AsmReadMsr32 (
- IN UINT32 Index
- );
-
-
-/**
- Zero-extend a 32-bit value and writes it to a Machine Specific Register(MSR).
-
- Writes the 32-bit value specified by Value to the MSR specified by Index. The
- upper 32-bits of the MSR write are set to zero. The 32-bit value written to
- the MSR is returned. No parameter checking is performed on Index or Value,
- and some of these may cause CPU exceptions. The caller must either guarantee
- that Index and Value are valid, or the caller must establish proper exception
- handlers. This function is only available on IA-32 and X64.
-
- @param Index The 32-bit MSR index to write.
- @param Value The 32-bit value to write to the MSR.
-
- @return Value
-
-**/
-UINT32
-EFIAPI
-AsmWriteMsr32 (
- IN UINT32 Index,
- IN UINT32 Value
- );
-
-
-/**
- Reads a 64-bit MSR, performs a bitwise inclusive OR on the lower 32-bits, and
- writes the result back to the 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise inclusive OR
- between the lower 32-bits of the read result and the value specified by
- OrData, and writes the result to the 64-bit MSR specified by Index. The lower
- 32-bits of the value written to the MSR is returned. No parameter checking is
- performed on Index or OrData, and some of these may cause CPU exceptions. The
- caller must either guarantee that Index and OrData are valid, or the caller
- must establish proper exception handlers. This function is only available on
- IA-32 and X64.
-
- @param Index The 32-bit MSR index to write.
- @param OrData The value to OR with the read value from the MSR.
-
- @return The lower 32-bit value written to the MSR.
-
-**/
-UINT32
-EFIAPI
-AsmMsrOr32 (
- IN UINT32 Index,
- IN UINT32 OrData
- );
-
-
-/**
- Reads a 64-bit MSR, performs a bitwise AND on the lower 32-bits, and writes
- the result back to the 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise AND between the
- lower 32-bits of the read result and the value specified by AndData, and
- writes the result to the 64-bit MSR specified by Index. The lower 32-bits of
- the value written to the MSR is returned. No parameter checking is performed
- on Index or AndData, and some of these may cause CPU exceptions. The caller
- must either guarantee that Index and AndData are valid, or the caller must
- establish proper exception handlers. This function is only available on IA-32
- and X64.
-
- @param Index The 32-bit MSR index to write.
- @param AndData The value to AND with the read value from the MSR.
-
- @return The lower 32-bit value written to the MSR.
-
-**/
-UINT32
-EFIAPI
-AsmMsrAnd32 (
- IN UINT32 Index,
- IN UINT32 AndData
- );
-
-
-/**
- Reads a 64-bit MSR, performs a bitwise AND followed by a bitwise inclusive OR
- on the lower 32-bits, and writes the result back to the 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise AND between the
- lower 32-bits of the read result and the value specified by AndData
- preserving the upper 32-bits, performs a bitwise inclusive OR between the
- result of the AND operation and the value specified by OrData, and writes the
- result to the 64-bit MSR specified by Address. The lower 32-bits of the value
- written to the MSR is returned. No parameter checking is performed on Index,
- AndData, or OrData, and some of these may cause CPU exceptions. The caller
- must either guarantee that Index, AndData, and OrData are valid, or the
- caller must establish proper exception handlers. This function is only
- available on IA-32 and X64.
-
- @param Index The 32-bit MSR index to write.
- @param AndData The value to AND with the read value from the MSR.
- @param OrData The value to OR with the result of the AND operation.
-
- @return The lower 32-bit value written to the MSR.
-
-**/
-UINT32
-EFIAPI
-AsmMsrAndThenOr32 (
- IN UINT32 Index,
- IN UINT32 AndData,
- IN UINT32 OrData
- );
-
-
-/**
- Reads a bit field of an MSR.
-
- Reads the bit field in the lower 32-bits of a 64-bit MSR. The bit field is
- specified by the StartBit and the EndBit. The value of the bit field is
- returned. The caller must either guarantee that Index is valid, or the caller
- must set up exception handlers to catch the exceptions. This function is only
- available on IA-32 and X64.
-
- If StartBit is greater than 31, then ASSERT().
- If EndBit is greater than 31, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Index The 32-bit MSR index to read.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..31.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..31.
-
- @return The bit field read from the MSR.
-
-**/
-UINT32
-EFIAPI
-AsmMsrBitFieldRead32 (
- IN UINT32 Index,
- IN UINTN StartBit,
- IN UINTN EndBit
- );
-
-
-/**
- Writes a bit field to an MSR.
-
- Writes Value to a bit field in the lower 32-bits of a 64-bit MSR. The bit
- field is specified by the StartBit and the EndBit. All other bits in the
- destination MSR are preserved. The lower 32-bits of the MSR written is
- returned. Extra left bits in Value are stripped. The caller must either
- guarantee that Index and the data written is valid, or the caller must set up
- exception handlers to catch the exceptions. This function is only available
- on IA-32 and X64.
-
- If StartBit is greater than 31, then ASSERT().
- If EndBit is greater than 31, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Index The 32-bit MSR index to write.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..31.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..31.
- @param Value New value of the bit field.
-
- @return The lower 32-bit of the value written to the MSR.
-
-**/
-UINT32
-EFIAPI
-AsmMsrBitFieldWrite32 (
- IN UINT32 Index,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT32 Value
- );
-
-
-/**
- Reads a bit field in a 64-bit MSR, performs a bitwise OR, and writes the
- result back to the bit field in the 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise inclusive OR
- between the read result and the value specified by OrData, and writes the
- result to the 64-bit MSR specified by Index. The lower 32-bits of the value
- written to the MSR are returned. Extra left bits in OrData are stripped. The
- caller must either guarantee that Index and the data written is valid, or
- the caller must set up exception handlers to catch the exceptions. This
- function is only available on IA-32 and X64.
-
- If StartBit is greater than 31, then ASSERT().
- If EndBit is greater than 31, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Index The 32-bit MSR index to write.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..31.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..31.
- @param OrData The value to OR with the read value from the MSR.
-
- @return The lower 32-bit of the value written to the MSR.
-
-**/
-UINT32
-EFIAPI
-AsmMsrBitFieldOr32 (
- IN UINT32 Index,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT32 OrData
- );
-
-
-/**
- Reads a bit field in a 64-bit MSR, performs a bitwise AND, and writes the
- result back to the bit field in the 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise AND between the
- read result and the value specified by AndData, and writes the result to the
- 64-bit MSR specified by Index. The lower 32-bits of the value written to the
- MSR are returned. Extra left bits in AndData are stripped. The caller must
- either guarantee that Index and the data written is valid, or the caller must
- set up exception handlers to catch the exceptions. This function is only
- available on IA-32 and X64.
-
- If StartBit is greater than 31, then ASSERT().
- If EndBit is greater than 31, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Index The 32-bit MSR index to write.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..31.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..31.
- @param AndData The value to AND with the read value from the MSR.
-
- @return The lower 32-bit of the value written to the MSR.
-
-**/
-UINT32
-EFIAPI
-AsmMsrBitFieldAnd32 (
- IN UINT32 Index,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT32 AndData
- );
-
-
-/**
- Reads a bit field in a 64-bit MSR, performs a bitwise AND followed by a
- bitwise inclusive OR, and writes the result back to the bit field in the
- 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise AND followed by a
- bitwise inclusive OR between the read result and the value specified by
- AndData, and writes the result to the 64-bit MSR specified by Index. The
- lower 32-bits of the value written to the MSR are returned. Extra left bits
- in both AndData and OrData are stripped. The caller must either guarantee
- that Index and the data written is valid, or the caller must set up exception
- handlers to catch the exceptions. This function is only available on IA-32
- and X64.
-
- If StartBit is greater than 31, then ASSERT().
- If EndBit is greater than 31, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Index The 32-bit MSR index to write.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..31.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..31.
- @param AndData The value to AND with the read value from the MSR.
- @param OrData The value to OR with the result of the AND operation.
-
- @return The lower 32-bit of the value written to the MSR.
-
-**/
-UINT32
-EFIAPI
-AsmMsrBitFieldAndThenOr32 (
- IN UINT32 Index,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT32 AndData,
- IN UINT32 OrData
- );
-
-
-/**
- Returns a 64-bit Machine Specific Register(MSR).
-
- Reads and returns the 64-bit MSR specified by Index. No parameter checking is
- performed on Index, and some Index values may cause CPU exceptions. The
- caller must either guarantee that Index is valid, or the caller must set up
- exception handlers to catch the exceptions. This function is only available
- on IA-32 and X64.
-
- @param Index The 32-bit MSR index to read.
-
- @return The value of the MSR identified by Index.
-
-**/
-UINT64
-EFIAPI
-AsmReadMsr64 (
- IN UINT32 Index
- );
-
-
-/**
- Writes a 64-bit value to a Machine Specific Register(MSR), and returns the
- value.
-
- Writes the 64-bit value specified by Value to the MSR specified by Index. The
- 64-bit value written to the MSR is returned. No parameter checking is
- performed on Index or Value, and some of these may cause CPU exceptions. The
- caller must either guarantee that Index and Value are valid, or the caller
- must establish proper exception handlers. This function is only available on
- IA-32 and X64.
-
- @param Index The 32-bit MSR index to write.
- @param Value The 64-bit value to write to the MSR.
-
- @return Value
-
-**/
-UINT64
-EFIAPI
-AsmWriteMsr64 (
- IN UINT32 Index,
- IN UINT64 Value
- );
-
-
-/**
- Reads a 64-bit MSR, performs a bitwise inclusive OR, and writes the result
- back to the 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise inclusive OR
- between the read result and the value specified by OrData, and writes the
- result to the 64-bit MSR specified by Index. The value written to the MSR is
- returned. No parameter checking is performed on Index or OrData, and some of
- these may cause CPU exceptions. The caller must either guarantee that Index
- and OrData are valid, or the caller must establish proper exception handlers.
- This function is only available on IA-32 and X64.
-
- @param Index The 32-bit MSR index to write.
- @param OrData The value to OR with the read value from the MSR.
-
- @return The value written back to the MSR.
-
-**/
-UINT64
-EFIAPI
-AsmMsrOr64 (
- IN UINT32 Index,
- IN UINT64 OrData
- );
-
-
-/**
- Reads a 64-bit MSR, performs a bitwise AND, and writes the result back to the
- 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise AND between the
- read result and the value specified by OrData, and writes the result to the
- 64-bit MSR specified by Index. The value written to the MSR is returned. No
- parameter checking is performed on Index or OrData, and some of these may
- cause CPU exceptions. The caller must either guarantee that Index and OrData
- are valid, or the caller must establish proper exception handlers. This
- function is only available on IA-32 and X64.
-
- @param Index The 32-bit MSR index to write.
- @param AndData The value to AND with the read value from the MSR.
-
- @return The value written back to the MSR.
-
-**/
-UINT64
-EFIAPI
-AsmMsrAnd64 (
- IN UINT32 Index,
- IN UINT64 AndData
- );
-
-
-/**
- Reads a 64-bit MSR, performs a bitwise AND followed by a bitwise inclusive
- OR, and writes the result back to the 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise AND between read
- result and the value specified by AndData, performs a bitwise inclusive OR
- between the result of the AND operation and the value specified by OrData,
- and writes the result to the 64-bit MSR specified by Index. The value written
- to the MSR is returned. No parameter checking is performed on Index, AndData,
- or OrData, and some of these may cause CPU exceptions. The caller must either
- guarantee that Index, AndData, and OrData are valid, or the caller must
- establish proper exception handlers. This function is only available on IA-32
- and X64.
-
- @param Index The 32-bit MSR index to write.
- @param AndData The value to AND with the read value from the MSR.
- @param OrData The value to OR with the result of the AND operation.
-
- @return The value written back to the MSR.
-
-**/
-UINT64
-EFIAPI
-AsmMsrAndThenOr64 (
- IN UINT32 Index,
- IN UINT64 AndData,
- IN UINT64 OrData
- );
-
-
-/**
- Reads a bit field of an MSR.
-
- Reads the bit field in the 64-bit MSR. The bit field is specified by the
- StartBit and the EndBit. The value of the bit field is returned. The caller
- must either guarantee that Index is valid, or the caller must set up
- exception handlers to catch the exceptions. This function is only available
- on IA-32 and X64.
-
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Index The 32-bit MSR index to read.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
-
- @return The value read from the MSR.
-
-**/
-UINT64
-EFIAPI
-AsmMsrBitFieldRead64 (
- IN UINT32 Index,
- IN UINTN StartBit,
- IN UINTN EndBit
- );
-
-
-/**
- Writes a bit field to an MSR.
-
- Writes Value to a bit field in a 64-bit MSR. The bit field is specified by
- the StartBit and the EndBit. All other bits in the destination MSR are
- preserved. The MSR written is returned. Extra left bits in Value are
- stripped. The caller must either guarantee that Index and the data written is
- valid, or the caller must set up exception handlers to catch the exceptions.
- This function is only available on IA-32 and X64.
-
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Index The 32-bit MSR index to write.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param Value New value of the bit field.
-
- @return The value written back to the MSR.
-
-**/
-UINT64
-EFIAPI
-AsmMsrBitFieldWrite64 (
- IN UINT32 Index,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 Value
- );
-
-
-/**
- Reads a bit field in a 64-bit MSR, performs a bitwise inclusive OR, and
- writes the result back to the bit field in the 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise inclusive OR
- between the read result and the value specified by OrData, and writes the
- result to the 64-bit MSR specified by Index. The value written to the MSR is
- returned. Extra left bits in OrData are stripped. The caller must either
- guarantee that Index and the data written is valid, or the caller must set up
- exception handlers to catch the exceptions. This function is only available
- on IA-32 and X64.
-
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Index The 32-bit MSR index to write.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param OrData The value to OR with the read value from the bit field.
-
- @return The value written back to the MSR.
-
-**/
-UINT64
-EFIAPI
-AsmMsrBitFieldOr64 (
- IN UINT32 Index,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 OrData
- );
-
-
-/**
- Reads a bit field in a 64-bit MSR, performs a bitwise AND, and writes the
- result back to the bit field in the 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise AND between the
- read result and the value specified by AndData, and writes the result to the
- 64-bit MSR specified by Index. The value written to the MSR is returned.
- Extra left bits in AndData are stripped. The caller must either guarantee
- that Index and the data written is valid, or the caller must set up exception
- handlers to catch the exceptions. This function is only available on IA-32
- and X64.
-
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Index The 32-bit MSR index to write.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param AndData The value to AND with the read value from the bit field.
-
- @return The value written back to the MSR.
-
-**/
-UINT64
-EFIAPI
-AsmMsrBitFieldAnd64 (
- IN UINT32 Index,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 AndData
- );
-
-
-/**
- Reads a bit field in a 64-bit MSR, performs a bitwise AND followed by a
- bitwise inclusive OR, and writes the result back to the bit field in the
- 64-bit MSR.
-
- Reads the 64-bit MSR specified by Index, performs a bitwise AND followed by
- a bitwise inclusive OR between the read result and the value specified by
- AndData, and writes the result to the 64-bit MSR specified by Index. The
- value written to the MSR is returned. Extra left bits in both AndData and
- OrData are stripped. The caller must either guarantee that Index and the data
- written is valid, or the caller must set up exception handlers to catch the
- exceptions. This function is only available on IA-32 and X64.
-
- If StartBit is greater than 63, then ASSERT().
- If EndBit is greater than 63, then ASSERT().
- If EndBit is less than StartBit, then ASSERT().
-
- @param Index The 32-bit MSR index to write.
- @param StartBit The ordinal of the least significant bit in the bit field.
- Range 0..63.
- @param EndBit The ordinal of the most significant bit in the bit field.
- Range 0..63.
- @param AndData The value to AND with the read value from the bit field.
- @param OrData The value to OR with the result of the AND operation.
-
- @return The value written back to the MSR.
-
-**/
-UINT64
-EFIAPI
-AsmMsrBitFieldAndThenOr64 (
- IN UINT32 Index,
- IN UINTN StartBit,
- IN UINTN EndBit,
- IN UINT64 AndData,
- IN UINT64 OrData
- );
-
-
-/**
- Reads the current value of the EFLAGS register.
-
- Reads and returns the current value of the EFLAGS register. This function is
- only available on IA-32 and X64. This returns a 32-bit value on IA-32 and a
- 64-bit value on X64.
-
- @return EFLAGS on IA-32 or RFLAGS on X64.
-
-**/
-UINTN
-EFIAPI
-AsmReadEflags (
- VOID
- );
-
-
-/**
- Reads the current value of the Control Register 0 (CR0).
-
- Reads and returns the current value of CR0. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of the Control Register 0 (CR0).
-
-**/
-UINTN
-EFIAPI
-AsmReadCr0 (
- VOID
- );
-
-
-/**
- Reads the current value of the Control Register 2 (CR2).
-
- Reads and returns the current value of CR2. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of the Control Register 2 (CR2).
-
-**/
-UINTN
-EFIAPI
-AsmReadCr2 (
- VOID
- );
-
-
-/**
- Reads the current value of the Control Register 3 (CR3).
-
- Reads and returns the current value of CR3. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of the Control Register 3 (CR3).
-
-**/
-UINTN
-EFIAPI
-AsmReadCr3 (
- VOID
- );
-
-
-/**
- Reads the current value of the Control Register 4 (CR4).
-
- Reads and returns the current value of CR4. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of the Control Register 4 (CR4).
-
-**/
-UINTN
-EFIAPI
-AsmReadCr4 (
- VOID
- );
-
-
-/**
- Writes a value to Control Register 0 (CR0).
-
- Writes and returns a new value to CR0. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Cr0 The value to write to CR0.
-
- @return The value written to CR0.
-
-**/
-UINTN
-EFIAPI
-AsmWriteCr0 (
- UINTN Cr0
- );
-
-
-/**
- Writes a value to Control Register 2 (CR2).
-
- Writes and returns a new value to CR2. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Cr2 The value to write to CR2.
-
- @return The value written to CR2.
-
-**/
-UINTN
-EFIAPI
-AsmWriteCr2 (
- UINTN Cr2
- );
-
-
-/**
- Writes a value to Control Register 3 (CR3).
-
- Writes and returns a new value to CR3. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Cr3 The value to write to CR3.
-
- @return The value written to CR3.
-
-**/
-UINTN
-EFIAPI
-AsmWriteCr3 (
- UINTN Cr3
- );
-
-
-/**
- Writes a value to Control Register 4 (CR4).
-
- Writes and returns a new value to CR4. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Cr4 The value to write to CR4.
-
- @return The value written to CR4.
-
-**/
-UINTN
-EFIAPI
-AsmWriteCr4 (
- UINTN Cr4
- );
-
-
-/**
- Reads the current value of Debug Register 0 (DR0).
-
- Reads and returns the current value of DR0. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of Debug Register 0 (DR0).
-
-**/
-UINTN
-EFIAPI
-AsmReadDr0 (
- VOID
- );
-
-
-/**
- Reads the current value of Debug Register 1 (DR1).
-
- Reads and returns the current value of DR1. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of Debug Register 1 (DR1).
-
-**/
-UINTN
-EFIAPI
-AsmReadDr1 (
- VOID
- );
-
-
-/**
- Reads the current value of Debug Register 2 (DR2).
-
- Reads and returns the current value of DR2. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of Debug Register 2 (DR2).
-
-**/
-UINTN
-EFIAPI
-AsmReadDr2 (
- VOID
- );
-
-
-/**
- Reads the current value of Debug Register 3 (DR3).
-
- Reads and returns the current value of DR3. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of Debug Register 3 (DR3).
-
-**/
-UINTN
-EFIAPI
-AsmReadDr3 (
- VOID
- );
-
-
-/**
- Reads the current value of Debug Register 4 (DR4).
-
- Reads and returns the current value of DR4. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of Debug Register 4 (DR4).
-
-**/
-UINTN
-EFIAPI
-AsmReadDr4 (
- VOID
- );
-
-
-/**
- Reads the current value of Debug Register 5 (DR5).
-
- Reads and returns the current value of DR5. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of Debug Register 5 (DR5).
-
-**/
-UINTN
-EFIAPI
-AsmReadDr5 (
- VOID
- );
-
-
-/**
- Reads the current value of Debug Register 6 (DR6).
-
- Reads and returns the current value of DR6. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of Debug Register 6 (DR6).
-
-**/
-UINTN
-EFIAPI
-AsmReadDr6 (
- VOID
- );
-
-
-/**
- Reads the current value of Debug Register 7 (DR7).
-
- Reads and returns the current value of DR7. This function is only available
- on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
- X64.
-
- @return The value of Debug Register 7 (DR7).
-
-**/
-UINTN
-EFIAPI
-AsmReadDr7 (
- VOID
- );
-
-
-/**
- Writes a value to Debug Register 0 (DR0).
-
- Writes and returns a new value to DR0. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Dr0 The value to write to Dr0.
-
- @return The value written to Debug Register 0 (DR0).
-
-**/
-UINTN
-EFIAPI
-AsmWriteDr0 (
- UINTN Dr0
- );
-
-
-/**
- Writes a value to Debug Register 1 (DR1).
-
- Writes and returns a new value to DR1. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Dr1 The value to write to Dr1.
-
- @return The value written to Debug Register 1 (DR1).
-
-**/
-UINTN
-EFIAPI
-AsmWriteDr1 (
- UINTN Dr1
- );
-
-
-/**
- Writes a value to Debug Register 2 (DR2).
-
- Writes and returns a new value to DR2. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Dr2 The value to write to Dr2.
-
- @return The value written to Debug Register 2 (DR2).
-
-**/
-UINTN
-EFIAPI
-AsmWriteDr2 (
- UINTN Dr2
- );
-
-
-/**
- Writes a value to Debug Register 3 (DR3).
-
- Writes and returns a new value to DR3. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Dr3 The value to write to Dr3.
-
- @return The value written to Debug Register 3 (DR3).
-
-**/
-UINTN
-EFIAPI
-AsmWriteDr3 (
- UINTN Dr3
- );
-
-
-/**
- Writes a value to Debug Register 4 (DR4).
-
- Writes and returns a new value to DR4. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Dr4 The value to write to Dr4.
-
- @return The value written to Debug Register 4 (DR4).
-
-**/
-UINTN
-EFIAPI
-AsmWriteDr4 (
- UINTN Dr4
- );
-
-
-/**
- Writes a value to Debug Register 5 (DR5).
-
- Writes and returns a new value to DR5. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Dr5 The value to write to Dr5.
-
- @return The value written to Debug Register 5 (DR5).
-
-**/
-UINTN
-EFIAPI
-AsmWriteDr5 (
- UINTN Dr5
- );
-
-
-/**
- Writes a value to Debug Register 6 (DR6).
-
- Writes and returns a new value to DR6. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Dr6 The value to write to Dr6.
-
- @return The value written to Debug Register 6 (DR6).
-
-**/
-UINTN
-EFIAPI
-AsmWriteDr6 (
- UINTN Dr6
- );
-
-
-/**
- Writes a value to Debug Register 7 (DR7).
-
- Writes and returns a new value to DR7. This function is only available on
- IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
-
- @param Dr7 The value to write to Dr7.
-
- @return The value written to Debug Register 7 (DR7).
-
-**/
-UINTN
-EFIAPI
-AsmWriteDr7 (
- UINTN Dr7
- );
-
-
-/**
- Reads the current value of Code Segment Register (CS).
-
- Reads and returns the current value of CS. This function is only available on
- IA-32 and X64.
-
- @return The current value of CS.
-
-**/
-UINT16
-EFIAPI
-AsmReadCs (
- VOID
- );
-
-
-/**
- Reads the current value of Data Segment Register (DS).
-
- Reads and returns the current value of DS. This function is only available on
- IA-32 and X64.
-
- @return The current value of DS.
-
-**/
-UINT16
-EFIAPI
-AsmReadDs (
- VOID
- );
-
-
-/**
- Reads the current value of Extra Segment Register (ES).
-
- Reads and returns the current value of ES. This function is only available on
- IA-32 and X64.
-
- @return The current value of ES.
-
-**/
-UINT16
-EFIAPI
-AsmReadEs (
- VOID
- );
-
-
-/**
- Reads the current value of FS Data Segment Register (FS).
-
- Reads and returns the current value of FS. This function is only available on
- IA-32 and X64.
-
- @return The current value of FS.
-
-**/
-UINT16
-EFIAPI
-AsmReadFs (
- VOID
- );
-
-
-/**
- Reads the current value of GS Data Segment Register (GS).
-
- Reads and returns the current value of GS. This function is only available on
- IA-32 and X64.
-
- @return The current value of GS.
-
-**/
-UINT16
-EFIAPI
-AsmReadGs (
- VOID
- );
-
-
-/**
- Reads the current value of Stack Segment Register (SS).
-
- Reads and returns the current value of SS. This function is only available on
- IA-32 and X64.
-
- @return The current value of SS.
-
-**/
-UINT16
-EFIAPI
-AsmReadSs (
- VOID
- );
-
-
-/**
- Reads the current value of Task Register (TR).
-
- Reads and returns the current value of TR. This function is only available on
- IA-32 and X64.
-
- @return The current value of TR.
-
-**/
-UINT16
-EFIAPI
-AsmReadTr (
- VOID
- );
-
-
-/**
- Reads the current Global Descriptor Table Register(GDTR) descriptor.
-
- Reads and returns the current GDTR descriptor and returns it in Gdtr. This
- function is only available on IA-32 and X64.
-
- If Gdtr is NULL, then ASSERT().
-
- @param Gdtr Pointer to a GDTR descriptor.
-
-**/
-VOID
-EFIAPI
-AsmReadGdtr (
- OUT IA32_DESCRIPTOR *Gdtr
- );
-
-
-/**
- Writes the current Global Descriptor Table Register (GDTR) descriptor.
-
- Writes and the current GDTR descriptor specified by Gdtr. This function is
- only available on IA-32 and X64.
-
- If Gdtr is NULL, then ASSERT().
-
- @param Gdtr Pointer to a GDTR descriptor.
-
-**/
-VOID
-EFIAPI
-AsmWriteGdtr (
- IN CONST IA32_DESCRIPTOR *Gdtr
- );
-
-
-/**
- Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.
-
- Reads and returns the current IDTR descriptor and returns it in Idtr. This
- function is only available on IA-32 and X64.
-
- If Idtr is NULL, then ASSERT().
-
- @param Idtr Pointer to a IDTR descriptor.
-
-**/
-VOID
-EFIAPI
-AsmReadIdtr (
- OUT IA32_DESCRIPTOR *Idtr
- );
-
-
-/**
- Writes the current Interrupt Descriptor Table Register(GDTR) descriptor.
-
- Writes the current IDTR descriptor and returns it in Idtr. This function is
- only available on IA-32 and X64.
-
- If Idtr is NULL, then ASSERT().
-
- @param Idtr Pointer to a IDTR descriptor.
-
-**/
-VOID
-EFIAPI
-AsmWriteIdtr (
- IN CONST IA32_DESCRIPTOR *Idtr
- );
-
-
-/**
- Reads the current Local Descriptor Table Register(LDTR) selector.
-
- Reads and returns the current 16-bit LDTR descriptor value. This function is
- only available on IA-32 and X64.
-
- @return The current selector of LDT.
-
-**/
-UINT16
-EFIAPI
-AsmReadLdtr (
- VOID
- );
-
-
-/**
- Writes the current Local Descriptor Table Register (GDTR) selector.
-
- Writes and the current LDTR descriptor specified by Ldtr. This function is
- only available on IA-32 and X64.
-
- @param Ldtr 16-bit LDTR selector value.
-
-**/
-VOID
-EFIAPI
-AsmWriteLdtr (
- IN UINT16 Ldtr
- );
-
-
-/**
- Save the current floating point/SSE/SSE2 context to a buffer.
-
- Saves the current floating point/SSE/SSE2 state to the buffer specified by
- Buffer. Buffer must be aligned on a 16-byte boundary. This function is only
- available on IA-32 and X64.
-
- If Buffer is NULL, then ASSERT().
- If Buffer is not aligned on a 16-byte boundary, then ASSERT().
-
- @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.
-
-**/
-VOID
-EFIAPI
-AsmFxSave (
- OUT IA32_FX_BUFFER *Buffer
- );
-
-
-/**
- Restores the current floating point/SSE/SSE2 context from a buffer.
-
- Restores the current floating point/SSE/SSE2 state from the buffer specified
- by Buffer. Buffer must be aligned on a 16-byte boundary. This function is
- only available on IA-32 and X64.
-
- If Buffer is NULL, then ASSERT().
- If Buffer is not aligned on a 16-byte boundary, then ASSERT().
- If Buffer was not saved with AsmFxSave(), then ASSERT().
-
- @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.
-
-**/
-VOID
-EFIAPI
-AsmFxRestore (
- IN CONST IA32_FX_BUFFER *Buffer
- );
-
-
-/**
- Reads the current value of 64-bit MMX Register #0 (MM0).
-
- Reads and returns the current value of MM0. This function is only available
- on IA-32 and X64.
-
- @return The current value of MM0.
-
-**/
-UINT64
-EFIAPI
-AsmReadMm0 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit MMX Register #1 (MM1).
-
- Reads and returns the current value of MM1. This function is only available
- on IA-32 and X64.
-
- @return The current value of MM1.
-
-**/
-UINT64
-EFIAPI
-AsmReadMm1 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit MMX Register #2 (MM2).
-
- Reads and returns the current value of MM2. This function is only available
- on IA-32 and X64.
-
- @return The current value of MM2.
-
-**/
-UINT64
-EFIAPI
-AsmReadMm2 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit MMX Register #3 (MM3).
-
- Reads and returns the current value of MM3. This function is only available
- on IA-32 and X64.
-
- @return The current value of MM3.
-
-**/
-UINT64
-EFIAPI
-AsmReadMm3 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit MMX Register #4 (MM4).
-
- Reads and returns the current value of MM4. This function is only available
- on IA-32 and X64.
-
- @return The current value of MM4.
-
-**/
-UINT64
-EFIAPI
-AsmReadMm4 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit MMX Register #5 (MM5).
-
- Reads and returns the current value of MM5. This function is only available
- on IA-32 and X64.
-
- @return The current value of MM5.
-
-**/
-UINT64
-EFIAPI
-AsmReadMm5 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit MMX Register #6 (MM6).
-
- Reads and returns the current value of MM6. This function is only available
- on IA-32 and X64.
-
- @return The current value of MM6.
-
-**/
-UINT64
-EFIAPI
-AsmReadMm6 (
- VOID
- );
-
-
-/**
- Reads the current value of 64-bit MMX Register #7 (MM7).
-
- Reads and returns the current value of MM7. This function is only available
- on IA-32 and X64.
-
- @return The current value of MM7.
-
-**/
-UINT64
-EFIAPI
-AsmReadMm7 (
- VOID
- );
-
-
-/**
- Writes the current value of 64-bit MMX Register #0 (MM0).
-
- Writes the current value of MM0. This function is only available on IA32 and
- X64.
-
- @param Value The 64-bit value to write to MM0.
-
-**/
-VOID
-EFIAPI
-AsmWriteMm0 (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit MMX Register #1 (MM1).
-
- Writes the current value of MM1. This function is only available on IA32 and
- X64.
-
- @param Value The 64-bit value to write to MM1.
-
-**/
-VOID
-EFIAPI
-AsmWriteMm1 (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit MMX Register #2 (MM2).
-
- Writes the current value of MM2. This function is only available on IA32 and
- X64.
-
- @param Value The 64-bit value to write to MM2.
-
-**/
-VOID
-EFIAPI
-AsmWriteMm2 (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit MMX Register #3 (MM3).
-
- Writes the current value of MM3. This function is only available on IA32 and
- X64.
-
- @param Value The 64-bit value to write to MM3.
-
-**/
-VOID
-EFIAPI
-AsmWriteMm3 (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit MMX Register #4 (MM4).
-
- Writes the current value of MM4. This function is only available on IA32 and
- X64.
-
- @param Value The 64-bit value to write to MM4.
-
-**/
-VOID
-EFIAPI
-AsmWriteMm4 (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit MMX Register #5 (MM5).
-
- Writes the current value of MM5. This function is only available on IA32 and
- X64.
-
- @param Value The 64-bit value to write to MM5.
-
-**/
-VOID
-EFIAPI
-AsmWriteMm5 (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit MMX Register #6 (MM6).
-
- Writes the current value of MM6. This function is only available on IA32 and
- X64.
-
- @param Value The 64-bit value to write to MM6.
-
-**/
-VOID
-EFIAPI
-AsmWriteMm6 (
- IN UINT64 Value
- );
-
-
-/**
- Writes the current value of 64-bit MMX Register #7 (MM7).
-
- Writes the current value of MM7. This function is only available on IA32 and
- X64.
-
- @param Value The 64-bit value to write to MM7.
-
-**/
-VOID
-EFIAPI
-AsmWriteMm7 (
- IN UINT64 Value
- );
-
-
-/**
- Reads the current value of Time Stamp Counter (TSC).
-
- Reads and returns the current value of TSC. This function is only available
- on IA-32 and X64.
-
- @return The current value of TSC
-
-**/
-UINT64
-EFIAPI
-AsmReadTsc (
- VOID
- );
-
-
-/**
- Reads the current value of a Performance Counter (PMC).
-
- Reads and returns the current value of performance counter specified by
- Index. This function is only available on IA-32 and X64.
-
- @param Index The 32-bit Performance Counter index to read.
-
- @return The value of the PMC specified by Index.
-
-**/
-UINT64
-EFIAPI
-AsmReadPmc (
- IN UINT32 Index
- );
-
-
-/**
- Sets up a monitor buffer that is used by AsmMwait().
-
- Executes a MONITOR instruction with the register state specified by Eax, Ecx
- and Edx. Returns Eax. This function is only available on IA-32 and X64.
-
- @param Eax The value to load into EAX or RAX before executing the MONITOR
- instruction.
- @param Ecx The value to load into ECX or RCX before executing the MONITOR
- instruction.
- @param Edx The value to load into EDX or RDX before executing the MONITOR
- instruction.
-
- @return Eax
-
-**/
-UINTN
-EFIAPI
-AsmMonitor (
- IN UINTN Eax,
- IN UINTN Ecx,
- IN UINTN Edx
- );
-
-
-/**
- Executes an MWAIT instruction.
-
- Executes an MWAIT instruction with the register state specified by Eax and
- Ecx. Returns Eax. This function is only available on IA-32 and X64.
-
- @param Eax The value to load into EAX or RAX before executing the MONITOR
- instruction.
- @param Ecx The value to load into ECX or RCX before executing the MONITOR
- instruction.
-
- @return Eax
-
-**/
-UINTN
-EFIAPI
-AsmMwait (
- IN UINTN Eax,
- IN UINTN Ecx
- );
-
-
-/**
- Executes a WBINVD instruction.
-
- Executes a WBINVD instruction. This function is only available on IA-32 and
- X64.
-
-**/
-VOID
-EFIAPI
-AsmWbinvd (
- VOID
- );
-
-
-/**
- Executes a INVD instruction.
-
- Executes a INVD instruction. This function is only available on IA-32 and
- X64.
-
-**/
-VOID
-EFIAPI
-AsmInvd (
- VOID
- );
-
-
-/**
- Flushes a cache line from all the instruction and data caches within the
- coherency domain of the CPU.
-
- Flushed the cache line specified by LinearAddress, and returns LinearAddress.
- This function is only available on IA-32 and X64.
-
- @param LinearAddress The address of the cache line to flush. If the CPU is
- in a physical addressing mode, then LinearAddress is a
- physical address. If the CPU is in a virtual
- addressing mode, then LinearAddress is a virtual
- address.
-
- @return LinearAddress
-**/
-VOID *
-EFIAPI
-AsmFlushCacheLine (
- IN VOID *LinearAddress
- );
-
-
-/**
- Enables the 32-bit paging mode on the CPU.
-
- Enables the 32-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables
- must be properly initialized prior to calling this service. This function
- assumes the current execution mode is 32-bit protected mode. This function is
- only available on IA-32. After the 32-bit paging mode is enabled, control is
- transferred to the function specified by EntryPoint using the new stack
- specified by NewStack and passing in the parameters specified by Context1 and
- Context2. Context1 and Context2 are optional and may be NULL. The function
- EntryPoint must never return.
-
- If the current execution mode is not 32-bit protected mode, then ASSERT().
- If EntryPoint is NULL, then ASSERT().
- If NewStack is NULL, then ASSERT().
-
- There are a number of constraints that must be followed before calling this
- function:
- 1) Interrupts must be disabled.
- 2) The caller must be in 32-bit protected mode with flat descriptors. This
- means all descriptors must have a base of 0 and a limit of 4GB.
- 3) CR0 and CR4 must be compatible with 32-bit protected mode with flat
- descriptors.
- 4) CR3 must point to valid page tables that will be used once the transition
- is complete, and those page tables must guarantee that the pages for this
- function and the stack are identity mapped.
-
- @param EntryPoint A pointer to function to call with the new stack after
- paging is enabled.
- @param Context1 A pointer to the context to pass into the EntryPoint
- function as the first parameter after paging is enabled.
- @param Context2 A pointer to the context to pass into the EntryPoint
- function as the second parameter after paging is enabled.
- @param NewStack A pointer to the new stack to use for the EntryPoint
- function after paging is enabled.
-
-**/
-VOID
-EFIAPI
-AsmEnablePaging32 (
- IN SWITCH_STACK_ENTRY_POINT EntryPoint,
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2, OPTIONAL
- IN VOID *NewStack
- );
-
-
-/**
- Disables the 32-bit paging mode on the CPU.
-
- Disables the 32-bit paging mode on the CPU and returns to 32-bit protected
- mode. This function assumes the current execution mode is 32-paged protected
- mode. This function is only available on IA-32. After the 32-bit paging mode
- is disabled, control is transferred to the function specified by EntryPoint
- using the new stack specified by NewStack and passing in the parameters
- specified by Context1 and Context2. Context1 and Context2 are optional and
- may be NULL. The function EntryPoint must never return.
-
- If the current execution mode is not 32-bit paged mode, then ASSERT().
- If EntryPoint is NULL, then ASSERT().
- If NewStack is NULL, then ASSERT().
-
- There are a number of constraints that must be followed before calling this
- function:
- 1) Interrupts must be disabled.
- 2) The caller must be in 32-bit paged mode.
- 3) CR0, CR3, and CR4 must be compatible with 32-bit paged mode.
- 4) CR3 must point to valid page tables that guarantee that the pages for
- this function and the stack are identity mapped.
-
- @param EntryPoint A pointer to function to call with the new stack after
- paging is disabled.
- @param Context1 A pointer to the context to pass into the EntryPoint
- function as the first parameter after paging is disabled.
- @param Context2 A pointer to the context to pass into the EntryPoint
- function as the second parameter after paging is
- disabled.
- @param NewStack A pointer to the new stack to use for the EntryPoint
- function after paging is disabled.
-
-**/
-VOID
-EFIAPI
-AsmDisablePaging32 (
- IN SWITCH_STACK_ENTRY_POINT EntryPoint,
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2, OPTIONAL
- IN VOID *NewStack
- );
-
-
-/**
- Enables the 64-bit paging mode on the CPU.
-
- Enables the 64-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables
- must be properly initialized prior to calling this service. This function
- assumes the current execution mode is 32-bit protected mode with flat
- descriptors. This function is only available on IA-32. After the 64-bit
- paging mode is enabled, control is transferred to the function specified by
- EntryPoint using the new stack specified by NewStack and passing in the
- parameters specified by Context1 and Context2. Context1 and Context2 are
- optional and may be 0. The function EntryPoint must never return.
-
- If the current execution mode is not 32-bit protected mode with flat
- descriptors, then ASSERT().
- If EntryPoint is 0, then ASSERT().
- If NewStack is 0, then ASSERT().
-
- @param Cs The 16-bit selector to load in the CS before EntryPoint
- is called. The descriptor in the GDT that this selector
- references must be setup for long mode.
- @param EntryPoint The 64-bit virtual address of the function to call with
- the new stack after paging is enabled.
- @param Context1 The 64-bit virtual address of the context to pass into
- the EntryPoint function as the first parameter after
- paging is enabled.
- @param Context2 The 64-bit virtual address of the context to pass into
- the EntryPoint function as the second parameter after
- paging is enabled.
- @param NewStack The 64-bit virtual address of the new stack to use for
- the EntryPoint function after paging is enabled.
-
-**/
-VOID
-EFIAPI
-AsmEnablePaging64 (
- IN UINT16 CodeSelector,
- IN UINT64 EntryPoint,
- IN UINT64 Context1, OPTIONAL
- IN UINT64 Context2, OPTIONAL
- IN UINT64 NewStack
- );
-
-
-/**
- Disables the 64-bit paging mode on the CPU.
-
- Disables the 64-bit paging mode on the CPU and returns to 32-bit protected
- mode. This function assumes the current execution mode is 64-paging mode.
- This function is only available on X64. After the 64-bit paging mode is
- disabled, control is transferred to the function specified by EntryPoint
- using the new stack specified by NewStack and passing in the parameters
- specified by Context1 and Context2. Context1 and Context2 are optional and
- may be 0. The function EntryPoint must never return.
-
- If the current execution mode is not 64-bit paged mode, then ASSERT().
- If EntryPoint is 0, then ASSERT().
- If NewStack is 0, then ASSERT().
-
- @param Cs The 16-bit selector to load in the CS before EntryPoint
- is called. The descriptor in the GDT that this selector
- references must be setup for 32-bit protected mode.
- @param EntryPoint The 64-bit virtual address of the function to call with
- the new stack after paging is disabled.
- @param Context1 The 64-bit virtual address of the context to pass into
- the EntryPoint function as the first parameter after
- paging is disabled.
- @param Context2 The 64-bit virtual address of the context to pass into
- the EntryPoint function as the second parameter after
- paging is disabled.
- @param NewStack The 64-bit virtual address of the new stack to use for
- the EntryPoint function after paging is disabled.
-
-**/
-VOID
-EFIAPI
-AsmDisablePaging64 (
- IN UINT16 CodeSelector,
- IN UINT32 EntryPoint,
- IN UINT32 Context1, OPTIONAL
- IN UINT32 Context2, OPTIONAL
- IN UINT32 NewStack
- );
-
-
-//
-// 16-bit thunking services
-//
-
-/**
- Retrieves the properties for 16-bit thunk functions.
-
- Computes the size of the buffer and stack below 1MB required to use the
- AsmPrepareThunk16(), AsmThunk16() and AsmPrepareAndThunk16() functions. This
- buffer size is returned in RealModeBufferSize, and the stack size is returned
- in ExtraStackSize. If parameters are passed to the 16-bit real mode code,
- then the actual minimum stack size is ExtraStackSize plus the maximum number
- of bytes that need to be passed to the 16-bit real mode code.
-
- If RealModeBufferSize is NULL, then ASSERT().
- If ExtraStackSize is NULL, then ASSERT().
-
- @param RealModeBufferSize A pointer to the size of the buffer below 1MB
- required to use the 16-bit thunk functions.
- @param ExtraStackSize A pointer to the extra size of stack below 1MB
- that the 16-bit thunk functions require for
- temporary storage in the transition to and from
- 16-bit real mode.
-
-**/
-VOID
-EFIAPI
-AsmGetThunk16Properties (
- OUT UINT32 *RealModeBufferSize,
- OUT UINT32 *ExtraStackSize
- );
-
-
-/**
- Prepares all structures a code required to use AsmThunk16().
-
- Prepares all structures and code required to use AsmThunk16().
-
- If ThunkContext is NULL, then ASSERT().
-
- @param ThunkContext A pointer to the context structure that describes the
- 16-bit real mode code to call.
-
-**/
-VOID
-EFIAPI
-AsmPrepareThunk16 (
- OUT THUNK_CONTEXT *ThunkContext
- );
-
-
-/**
- Transfers control to a 16-bit real mode entry point and returns the results.
-
- Transfers control to a 16-bit real mode entry point and returns the results.
- AsmPrepareThunk16() must be called with ThunkContext before this function is
- used.
-
- If ThunkContext is NULL, then ASSERT().
- If AsmPrepareThunk16() was not previously called with ThunkContext, then ASSERT().
-
- @param ThunkContext A pointer to the context structure that describes the
- 16-bit real mode code to call.
-
-**/
-VOID
-EFIAPI
-AsmThunk16 (
- IN OUT THUNK_CONTEXT *ThunkContext
- );
-
-
-/**
- Prepares all structures and code for a 16-bit real mode thunk, transfers
- control to a 16-bit real mode entry point, and returns the results.
-
- Prepares all structures and code for a 16-bit real mode thunk, transfers
- control to a 16-bit real mode entry point, and returns the results. If the
- caller only need to perform a single 16-bit real mode thunk, then this
- service should be used. If the caller intends to make more than one 16-bit
- real mode thunk, then it is more efficient if AsmPrepareThunk16() is called
- once and AsmThunk16() can be called for each 16-bit real mode thunk.
-
- If ThunkContext is NULL, then ASSERT().
-
- @param ThunkContext A pointer to the context structure that describes the
- 16-bit real mode code to call.
-
-**/
-VOID
-EFIAPI
-AsmPrepareAndThunk16 (
- IN OUT THUNK_CONTEXT *ThunkContext
- );
-
-#else
-
-#endif
-
-#endif
-
-
+/** @file
+ Memory-only library functions with no library constructor/destructor
+
+ Copyright (c) 2006 - 2007, Intel Corporation
+ All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef __BASE_LIB__
+#define __BASE_LIB__
+
+//
+// Definitions for architecture specific types
+// These include SPIN_LOCK and BASE_LIBRARY_JUMP_BUFFER
+//
+
+//
+// SPIN_LOCK
+//
+typedef volatile UINTN SPIN_LOCK;
+
+#if defined (MDE_CPU_IA32)
+//
+// IA32 context buffer used by SetJump() and LongJump()
+//
+typedef struct {
+ UINT32 Ebx;
+ UINT32 Esi;
+ UINT32 Edi;
+ UINT32 Ebp;
+ UINT32 Esp;
+ UINT32 Eip;
+} BASE_LIBRARY_JUMP_BUFFER;
+
+#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 4
+
+#elif defined (MDE_CPU_IPF)
+
+//
+// IPF context buffer used by SetJump() and LongJump()
+//
+typedef struct {
+ UINT64 F2[2];
+ UINT64 F3[2];
+ UINT64 F4[2];
+ UINT64 F5[2];
+ UINT64 F16[2];
+ UINT64 F17[2];
+ UINT64 F18[2];
+ UINT64 F19[2];
+ UINT64 F20[2];
+ UINT64 F21[2];
+ UINT64 F22[2];
+ UINT64 F23[2];
+ UINT64 F24[2];
+ UINT64 F25[2];
+ UINT64 F26[2];
+ UINT64 F27[2];
+ UINT64 F28[2];
+ UINT64 F29[2];
+ UINT64 F30[2];
+ UINT64 F31[2];
+ UINT64 R4;
+ UINT64 R5;
+ UINT64 R6;
+ UINT64 R7;
+ UINT64 SP;
+ UINT64 BR0;
+ UINT64 BR1;
+ UINT64 BR2;
+ UINT64 BR3;
+ UINT64 BR4;
+ UINT64 BR5;
+ UINT64 InitialUNAT;
+ UINT64 AfterSpillUNAT;
+ UINT64 PFS;
+ UINT64 BSP;
+ UINT64 Predicates;
+ UINT64 LoopCount;
+ UINT64 FPSR;
+} BASE_LIBRARY_JUMP_BUFFER;
+
+#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 0x10
+
+#elif defined (MDE_CPU_X64)
+//
+// X64 context buffer used by SetJump() and LongJump()
+//
+typedef struct {
+ UINT64 Rbx;
+ UINT64 Rsp;
+ UINT64 Rbp;
+ UINT64 Rdi;
+ UINT64 Rsi;
+ UINT64 R12;
+ UINT64 R13;
+ UINT64 R14;
+ UINT64 R15;
+ UINT64 Rip;
+} BASE_LIBRARY_JUMP_BUFFER;
+
+#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 8
+
+#elif defined (MDE_CPU_EBC)
+//
+// EBC context buffer used by SetJump() and LongJump()
+//
+typedef struct {
+ UINT64 R0;
+ UINT64 R1;
+ UINT64 R2;
+ UINT64 R3;
+ UINT64 IP;
+} BASE_LIBRARY_JUMP_BUFFER;
+
+#define BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT 8
+
+#else
+#error Unknown Processor Type
+#endif
+
+//
+// String Services
+//
+
+/**
+ Copies one Null-terminated Unicode string to another Null-terminated Unicode
+ string and returns the new Unicode string.
+
+ This function copies the contents of the Unicode string Source to the Unicode
+ string Destination, and returns Destination. If Source and Destination
+ overlap, then the results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+
+ @param Destination Pointer to a Null-terminated Unicode string.
+ @param Source Pointer to a Null-terminated Unicode string.
+
+ @return Destiantion
+
+**/
+CHAR16 *
+EFIAPI
+StrCpy (
+ OUT CHAR16 *Destination,
+ IN CONST CHAR16 *Source
+ );
+
+
+/**
+ Copies one Null-terminated Unicode string with a maximum length to another
+ Null-terminated Unicode string with a maximum length and returns the new
+ Unicode string.
+
+ This function copies the contents of the Unicode string Source to the Unicode
+ string Destination, and returns Destination. At most, Length Unicode
+ characters are copied from Source to Destination. If Length is 0, then
+ Destination is returned unmodified. If Length is greater that the number of
+ Unicode characters in Source, then Destination is padded with Null Unicode
+ characters. If Source and Destination overlap, then the results are
+ undefined.
+
+ If Length > 0 and Destination is NULL, then ASSERT().
+ If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If Length > 0 and Source is not aligned on a 16-bit bounadry, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+
+ @param Destination Pointer to a Null-terminated Unicode string.
+ @param Source Pointer to a Null-terminated Unicode string.
+ @param Length Maximum number of Unicode characters to copy.
+
+ @return Destination
+
+**/
+CHAR16 *
+EFIAPI
+StrnCpy (
+ OUT CHAR16 *Destination,
+ IN CONST CHAR16 *Source,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the length of a Null-terminated Unicode string.
+
+ This function returns the number of Unicode characters in the Null-terminated
+ Unicode string specified by String.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned on a 16-bit boundary, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and String contains more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+
+ @param String Pointer to a Null-terminated Unicode string.
+
+ @return The length of String.
+
+**/
+UINTN
+EFIAPI
+StrLen (
+ IN CONST CHAR16 *String
+ );
+
+
+/**
+ Returns the size of a Null-terminated Unicode string in bytes, including the
+ Null terminator.
+
+ This function returns the size, in bytes, of the Null-terminated Unicode
+ string specified by String.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned on a 16-bit boundary, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and String contains more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+
+ @param String Pointer to a Null-terminated Unicode string.
+
+ @return The size of String.
+
+**/
+UINTN
+EFIAPI
+StrSize (
+ IN CONST CHAR16 *String
+ );
+
+
+/**
+ Compares two Null-terminated Unicode strings, and returns the difference
+ between the first mismatched Unicode characters.
+
+ This function compares the Null-terminated Unicode string FirstString to the
+ Null-terminated Unicode string SecondString. If FirstString is identical to
+ SecondString, then 0 is returned. Otherwise, the value returned is the first
+ mismatched Unicode character in SecondString subtracted from the first
+ mismatched Unicode character in FirstString.
+
+ If FirstString is NULL, then ASSERT().
+ If FirstString is not aligned on a 16-bit boundary, then ASSERT().
+ If SecondString is NULL, then ASSERT().
+ If SecondString is not aligned on a 16-bit boundary, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more
+ than PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more
+ than PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+
+ @param FirstString Pointer to a Null-terminated Unicode string.
+ @param SecondString Pointer to a Null-terminated Unicode string.
+
+ @retval 0 FirstString is identical to SecondString.
+ @retval !=0 FirstString is not identical to SecondString.
+
+**/
+INTN
+EFIAPI
+StrCmp (
+ IN CONST CHAR16 *FirstString,
+ IN CONST CHAR16 *SecondString
+ );
+
+
+/**
+ Compares two Null-terminated Unicode strings with maximum lengths, and
+ returns the difference between the first mismatched Unicode characters.
+
+ This function compares the Null-terminated Unicode string FirstString to the
+ Null-terminated Unicode string SecondString. At most, Length Unicode
+ characters will be compared. If Length is 0, then 0 is returned. If
+ FirstString is identical to SecondString, then 0 is returned. Otherwise, the
+ value returned is the first mismatched Unicode character in SecondString
+ subtracted from the first mismatched Unicode character in FirstString.
+
+ If Length > 0 and FirstString is NULL, then ASSERT().
+ If Length > 0 and FirstString is not aligned on a 16-bit bounadary, then ASSERT().
+ If Length > 0 and SecondString is NULL, then ASSERT().
+ If Length > 0 and SecondString is not aligned on a 16-bit bounadary, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and FirstString contains more
+ than PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and SecondString contains more
+ than PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+
+ @param FirstString Pointer to a Null-terminated Unicode string.
+ @param SecondString Pointer to a Null-terminated Unicode string.
+ @param Length Maximum number of Unicode characters to compare.
+
+ @retval 0 FirstString is identical to SecondString.
+ @retval !=0 FirstString is not identical to SecondString.
+
+**/
+INTN
+EFIAPI
+StrnCmp (
+ IN CONST CHAR16 *FirstString,
+ IN CONST CHAR16 *SecondString,
+ IN UINTN Length
+ );
+
+
+/**
+ Concatenates one Null-terminated Unicode string to another Null-terminated
+ Unicode string, and returns the concatenated Unicode string.
+
+ This function concatenates two Null-terminated Unicode strings. The contents
+ of Null-terminated Unicode string Source are concatenated to the end of
+ Null-terminated Unicode string Destination. The Null-terminated concatenated
+ Unicode String is returned. If Source and Destination overlap, then the
+ results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Destination is not aligned on a 16-bit bounadary, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source is not aligned on a 16-bit bounadary, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Destination contains more
+ than PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination
+ and Source results in a Unicode string with more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+
+ @param Destination Pointer to a Null-terminated Unicode string.
+ @param Source Pointer to a Null-terminated Unicode string.
+
+ @return Destination
+
+**/
+CHAR16 *
+EFIAPI
+StrCat (
+ IN OUT CHAR16 *Destination,
+ IN CONST CHAR16 *Source
+ );
+
+
+/**
+ Concatenates one Null-terminated Unicode string with a maximum length to the
+ end of another Null-terminated Unicode string, and returns the concatenated
+ Unicode string.
+
+ This function concatenates two Null-terminated Unicode strings. The contents
+ of Null-terminated Unicode string Source are concatenated to the end of
+ Null-terminated Unicode string Destination, and Destination is returned. At
+ most, Length Unicode characters are concatenated from Source to the end of
+ Destination, and Destination is always Null-terminated. If Length is 0, then
+ Destination is returned unmodified. If Source and Destination overlap, then
+ the results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Length > 0 and Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If Length > 0 and Source is not aligned on a 16-bit boundary, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Destination contains more
+ than PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and concatenating Destination
+ and Source results in a Unicode string with more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+
+ @param Destination Pointer to a Null-terminated Unicode string.
+ @param Source Pointer to a Null-terminated Unicode string.
+ @param Length Maximum number of Unicode characters to concatenate from
+ Source.
+
+ @return Destination
+
+**/
+CHAR16 *
+EFIAPI
+StrnCat (
+ IN OUT CHAR16 *Destination,
+ IN CONST CHAR16 *Source,
+ IN UINTN Length
+ );
+
+/**
+ Returns the first occurance of a Null-terminated Unicode sub-string
+ in a Null-terminated Unicode string.
+
+ This function scans the contents of the Null-terminated Unicode string
+ specified by String and returns the first occurrence of SearchString.
+ If SearchString is not found in String, then NULL is returned. If
+ the length of SearchString is zero, then String is
+ returned.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned on a 16-bit boundary, then ASSERT().
+ If SearchString is NULL, then ASSERT().
+ If SearchString is not aligned on a 16-bit boundary, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and SearchString
+ or String contains more than PcdMaximumUnicodeStringLength Unicode
+ characters not including the Null-terminator, then ASSERT().
+
+ @param String Pointer to a Null-terminated Unicode string.
+ @param SearchString Pointer to a Null-terminated Unicode string to search for.
+
+ @retval NULL If the SearchString does not appear in String.
+ @retval !NULL If there is a match.
+
+**/
+CHAR16 *
+EFIAPI
+StrStr (
+ IN CONST CHAR16 *String,
+ IN CONST CHAR16 *SearchString
+ );
+
+/**
+ Convert a Null-terminated Unicode decimal string to a value of
+ type UINTN.
+
+ This function returns a value of type UINTN by interpreting the contents
+ of the Unicode string specified by String as a decimal number. The format
+ of the input Unicode string String is:
+
+ [spaces] [decimal digits].
+
+ The valid decimal digit character is in the range [0-9]. The
+ function will ignore the pad space, which includes spaces or
+ tab characters, before [decimal digits]. The running zero in the
+ beginning of [decimal digits] will be ignored. Then, the function
+ stops at the first character that is a not a valid decimal character
+ or a Null-terminator, whichever one comes first.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits,
+ then 0 is returned.
+ If the number represented by String overflows according
+ to the range defined by UINTN, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains
+ more than PcdMaximumUnicodeStringLength Unicode characters not including
+ the Null-terminator, then ASSERT().
+
+ @param String Pointer to a Null-terminated Unicode string.
+
+ @retval UINTN
+
+**/
+UINTN
+EFIAPI
+StrDecimalToUintn (
+ IN CONST CHAR16 *String
+ );
+
+/**
+ Convert a Null-terminated Unicode decimal string to a value of
+ type UINT64.
+
+ This function returns a value of type UINT64 by interpreting the contents
+ of the Unicode string specified by String as a decimal number. The format
+ of the input Unicode string String is:
+
+ [spaces] [decimal digits].
+
+ The valid decimal digit character is in the range [0-9]. The
+ function will ignore the pad space, which includes spaces or
+ tab characters, before [decimal digits]. The running zero in the
+ beginning of [decimal digits] will be ignored. Then, the function
+ stops at the first character that is a not a valid decimal character
+ or a Null-terminator, whichever one comes first.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits,
+ then 0 is returned.
+ If the number represented by String overflows according
+ to the range defined by UINT64, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains
+ more than PcdMaximumUnicodeStringLength Unicode characters not including
+ the Null-terminator, then ASSERT().
+
+ @param String Pointer to a Null-terminated Unicode string.
+
+ @retval UINT64
+
+**/
+UINT64
+EFIAPI
+StrDecimalToUint64 (
+ IN CONST CHAR16 *String
+ );
+
+
+/**
+ Convert a Null-terminated Unicode hexadecimal string to a value of type UINTN.
+
+ This function returns a value of type UINTN by interpreting the contents
+ of the Unicode string specified by String as a hexadecimal number.
+ The format of the input Unicode string String is:
+
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
+ If "x" appears in the input string, it must be prefixed with at least one 0.
+ The function will ignore the pad space, which includes spaces or tab characters,
+ before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
+ [hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
+ first valid hexadecimal digit. Then, the function stops at the first character that is
+ a not a valid hexadecimal character or NULL, whichever one comes first.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then zero is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
+ then zero is returned.
+ If the number represented by String overflows according to the range defined by
+ UINTN, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String Pointer to a Null-terminated Unicode string.
+
+ @retval UINTN
+
+**/
+UINTN
+EFIAPI
+StrHexToUintn (
+ IN CONST CHAR16 *String
+ );
+
+
+/**
+ Convert a Null-terminated Unicode hexadecimal string to a value of type UINT64.
+
+ This function returns a value of type UINT64 by interpreting the contents
+ of the Unicode string specified by String as a hexadecimal number.
+ The format of the input Unicode string String is
+
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix.
+ If "x" appears in the input string, it must be prefixed with at least one 0.
+ The function will ignore the pad space, which includes spaces or tab characters,
+ before [zeros], [x] or [hexadecimal digit]. The running zero before [x] or
+ [hexadecimal digit] will be ignored. Then, the decoding starts after [x] or the
+ first valid hexadecimal digit. Then, the function stops at the first character that is
+ a not a valid hexadecimal character or NULL, whichever one comes first.
+
+ If String is NULL, then ASSERT().
+ If String is not aligned in a 16-bit boundary, then ASSERT().
+ If String has only pad spaces, then zero is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits,
+ then zero is returned.
+ If the number represented by String overflows according to the range defined by
+ UINT64, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and String contains more than
+ PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String Pointer to a Null-terminated Unicode string.
+
+ @retval UINT64
+
+**/
+UINT64
+EFIAPI
+StrHexToUint64 (
+ IN CONST CHAR16 *String
+ );
+
+/**
+ Convert a nibble in the low 4 bits of a byte to a Unicode hexadecimal character.
+
+ This function converts a nibble in the low 4 bits of a byte to a Unicode hexadecimal
+ character For example, the nibble 0x01 and 0x0A will converted to L'1' and L'A'
+ respectively.
+
+ The upper nibble in the input byte will be masked off.
+
+ @param Nibble The nibble which is in the low 4 bits of the input byte.
+
+ @retval CHAR16 The Unicode hexadecimal character.
+
+**/
+CHAR16
+EFIAPI
+NibbleToHexChar (
+ IN UINT8 Nibble
+ )
+;
+
+/**
+ Convert binary buffer to a Unicode String in a specified sequence.
+
+ This function converts bytes in the binary Buffer Buf to a Unicode String Str.
+ Each byte will be represented by two Unicode characters. For example, byte 0xA1 will
+ be converted into two Unicode character L'A' and L'1'. In the output String, the Unicode Character
+ for the Most Significant Nibble will be put before the Unicode Character for the Least Significant
+ Nibble. The output string for the buffer containing a single byte 0xA1 will be L"A1".
+ For a buffer with multiple bytes, the Unicode character produced by the first byte will be put into the
+ the last character in the output string. The one next to first byte will be put into the
+ character before the last character. This rules applies to the rest of the bytes. The Unicode
+ character by the last byte will be put into the first character in the output string. For example,
+ the input buffer for a 64-bits unsigned integrer 0x12345678abcdef1234 will be converted to
+ a Unicode string equal to L"12345678abcdef1234".
+
+ @param String On input, String is pointed to the buffer allocated for the convertion.
+ @param StringLen The Length of String buffer to hold the output String. The length must include the tailing '\0' character.
+ The StringLen required to convert a N bytes Buffer will be a least equal to or greater
+ than 2*N + 1.
+ @param Buffer The pointer to a input buffer.
+ @param BufferSizeInBytes Lenth in bytes of the input buffer.
+
+
+ @retval EFI_SUCCESS The convertion is successfull. All bytes in Buffer has been convert to the corresponding
+ Unicode character and placed into the right place in String.
+ @retval EFI_BUFFER_TOO_SMALL StringSizeInBytes is smaller than 2 * N + 1the number of bytes required to
+ complete the convertion.
+**/
+RETURN_STATUS
+EFIAPI
+BufToHexString (
+ IN OUT CHAR16 *String,
+ IN OUT UINTN *StringLen,
+ IN CONST UINT8 *Buffer,
+ IN UINTN BufferSizeInBytes
+ )
+;
+
+
+/**
+ Convert a Unicode string consisting of hexadecimal characters to a output byte buffer.
+
+ This function converts a Unicode string consisting of characters in the range of Hexadecimal
+ character (L'0' to L'9', L'A' to L'F' and L'a' to L'f') to a output byte buffer. The function will stop
+ at the first non-hexadecimal character or the NULL character. The convertion process can be
+ simply viewed as the reverse operations defined by BufToHexString. Two Unicode characters will be
+ converted into one byte. The first Unicode character represents the Most Significant Nibble and the
+ second Unicode character represents the Least Significant Nibble in the output byte.
+ The first pair of Unicode characters represents the last byte in the output buffer. The second pair of Unicode
+ characters represent the the byte preceding the last byte. This rule applies to the rest pairs of bytes.
+ The last pair represent the first byte in the output buffer.
+
+ For example, a Unciode String L"12345678" will be converted into a buffer wil the following bytes
+ (first byte is the byte in the lowest memory address): "0x78, 0x56, 0x34, 0x12".
+
+ If String has N valid hexadecimal characters for conversion, the caller must make sure Buffer is at least
+ N/2 (if N is even) or (N+1)/2 (if N if odd) bytes.
+
+ @param Buffer The output buffer allocated by the caller.
+ @param BufferSizeInBytes On input, the size in bytes of Buffer. On output, it is updated to
+ contain the size of the Buffer which is actually used for the converstion.
+ For Unicode string with 2*N hexadecimal characters (not including the
+ tailing NULL character), N bytes of Buffer will be used for the output.
+ @param String The input hexadecimal string.
+ @param ConvertedStrLen The number of hexadecimal characters used to produce content in output
+ buffer Buffer.
+
+ @retval RETURN_BUFFER_TOO_SMALL The input BufferSizeInBytes is too small to hold the output. BufferSizeInBytes
+ will be updated to the size required for the converstion.
+ @retval RETURN_SUCCESS The convertion is successful or the first Unicode character from String
+ is hexadecimal. If ConvertedStrLen is not NULL, it is updated
+ to the number of hexadecimal character used for the converstion.
+**/
+RETURN_STATUS
+EFIAPI
+HexStringToBuf (
+ OUT UINT8 *Buffer,
+ IN OUT UINTN *BufferSizeInBytes,
+ IN CONST CHAR16 *String,
+ OUT UINTN *ConvertedStrLen OPTIONAL
+ )
+;
+
+
+/**
+ Test if a Unicode character is a hexadecimal digit. If true, the input
+ Unicode character is converted to a byte.
+
+ This function tests if a Unicode character is a hexadecimal digit. If true, the input
+ Unicode character is converted to a byte. For example, Unicode character
+ L'A' will be converted to 0x0A.
+
+ If Digit is NULL, then ASSERT.
+
+ @retval TRUE Char is in the range of Hexadecimal number. Digit is updated
+ to the byte value of the number.
+ @retval FALSE Char is not in the range of Hexadecimal number. Digit is keep
+ intact.
+
+**/
+BOOLEAN
+EFIAPI
+IsHexDigit (
+ OUT UINT8 *Digit,
+ IN CHAR16 Char
+ )
+;
+
+/**
+ Convert one Null-terminated Unicode string to a Null-terminated
+ ASCII string and returns the ASCII string.
+
+ This function converts the content of the Unicode string Source
+ to the ASCII string Destination by copying the lower 8 bits of
+ each Unicode character. It returns Destination.
+
+ If any Unicode characters in Source contain non-zero value in
+ the upper 8 bits, then ASSERT().
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source is not aligned on a 16-bit boundary, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains
+ more than PcdMaximumUnicodeStringLength Unicode characters not including
+ the Null-terminator, then ASSERT().
+
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more
+ than PcdMaximumAsciiStringLength Unicode characters not including the
+ Null-terminator, then ASSERT().
+
+ @param Source Pointer to a Null-terminated Unicode string.
+ @param Destination Pointer to a Null-terminated ASCII string.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+UnicodeStrToAsciiStr (
+ IN CONST CHAR16 *Source,
+ OUT CHAR8 *Destination
+ );
+
+
+/**
+ Copies one Null-terminated ASCII string to another Null-terminated ASCII
+ string and returns the new ASCII string.
+
+ This function copies the contents of the ASCII string Source to the ASCII
+ string Destination, and returns Destination. If Source and Destination
+ overlap, then the results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param Destination Pointer to a Null-terminated ASCII string.
+ @param Source Pointer to a Null-terminated ASCII string.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrCpy (
+ OUT CHAR8 *Destination,
+ IN CONST CHAR8 *Source
+ );
+
+
+/**
+ Copies one Null-terminated ASCII string with a maximum length to another
+ Null-terminated ASCII string with a maximum length and returns the new ASCII
+ string.
+
+ This function copies the contents of the ASCII string Source to the ASCII
+ string Destination, and returns Destination. At most, Length ASCII characters
+ are copied from Source to Destination. If Length is 0, then Destination is
+ returned unmodified. If Length is greater that the number of ASCII characters
+ in Source, then Destination is padded with Null ASCII characters. If Source
+ and Destination overlap, then the results are undefined.
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param Destination Pointer to a Null-terminated ASCII string.
+ @param Source Pointer to a Null-terminated ASCII string.
+ @param Length Maximum number of ASCII characters to copy.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrnCpy (
+ OUT CHAR8 *Destination,
+ IN CONST CHAR8 *Source,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the length of a Null-terminated ASCII string.
+
+ This function returns the number of ASCII characters in the Null-terminated
+ ASCII string specified by String.
+
+ If Length > 0 and Destination is NULL, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String Pointer to a Null-terminated ASCII string.
+
+ @return The length of String.
+
+**/
+UINTN
+EFIAPI
+AsciiStrLen (
+ IN CONST CHAR8 *String
+ );
+
+
+/**
+ Returns the size of a Null-terminated ASCII string in bytes, including the
+ Null terminator.
+
+ This function returns the size, in bytes, of the Null-terminated ASCII string
+ specified by String.
+
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String Pointer to a Null-terminated ASCII string.
+
+ @return The size of String.
+
+**/
+UINTN
+EFIAPI
+AsciiStrSize (
+ IN CONST CHAR8 *String
+ );
+
+
+/**
+ Compares two Null-terminated ASCII strings, and returns the difference
+ between the first mismatched ASCII characters.
+
+ This function compares the Null-terminated ASCII string FirstString to the
+ Null-terminated ASCII string SecondString. If FirstString is identical to
+ SecondString, then 0 is returned. Otherwise, the value returned is the first
+ mismatched ASCII character in SecondString subtracted from the first
+ mismatched ASCII character in FirstString.
+
+ If FirstString is NULL, then ASSERT().
+ If SecondString is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and SecondString contains more
+ than PcdMaximumAsciiStringLength ASCII characters not including the
+ Null-terminator, then ASSERT().
+
+ @param FirstString Pointer to a Null-terminated ASCII string.
+ @param SecondString Pointer to a Null-terminated ASCII string.
+
+ @retval 0 FirstString is identical to SecondString.
+ @retval !=0 FirstString is not identical to SecondString.
+
+**/
+INTN
+EFIAPI
+AsciiStrCmp (
+ IN CONST CHAR8 *FirstString,
+ IN CONST CHAR8 *SecondString
+ );
+
+
+/**
+ Performs a case insensitive comparison of two Null-terminated ASCII strings,
+ and returns the difference between the first mismatched ASCII characters.
+
+ This function performs a case insensitive comparison of the Null-terminated
+ ASCII string FirstString to the Null-terminated ASCII string SecondString. If
+ FirstString is identical to SecondString, then 0 is returned. Otherwise, the
+ value returned is the first mismatched lower case ASCII character in
+ SecondString subtracted from the first mismatched lower case ASCII character
+ in FirstString.
+
+ If FirstString is NULL, then ASSERT().
+ If SecondString is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and SecondString contains more
+ than PcdMaximumAsciiStringLength ASCII characters not including the
+ Null-terminator, then ASSERT().
+
+ @param FirstString Pointer to a Null-terminated ASCII string.
+ @param SecondString Pointer to a Null-terminated ASCII string.
+
+ @retval 0 FirstString is identical to SecondString using case insensitive
+ comparisons.
+ @retval !=0 FirstString is not identical to SecondString using case
+ insensitive comparisons.
+
+**/
+INTN
+EFIAPI
+AsciiStriCmp (
+ IN CONST CHAR8 *FirstString,
+ IN CONST CHAR8 *SecondString
+ );
+
+
+/**
+ Compares two Null-terminated ASCII strings with maximum lengths, and returns
+ the difference between the first mismatched ASCII characters.
+
+ This function compares the Null-terminated ASCII string FirstString to the
+ Null-terminated ASCII string SecondString. At most, Length ASCII characters
+ will be compared. If Length is 0, then 0 is returned. If FirstString is
+ identical to SecondString, then 0 is returned. Otherwise, the value returned
+ is the first mismatched ASCII character in SecondString subtracted from the
+ first mismatched ASCII character in FirstString.
+
+ If Length > 0 and FirstString is NULL, then ASSERT().
+ If Length > 0 and SecondString is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and FirstString contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and SecondString contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param FirstString Pointer to a Null-terminated ASCII string.
+ @param SecondString Pointer to a Null-terminated ASCII string.
+ @param Length Maximum number of ASCII characters for compare.
+
+ @retval 0 FirstString is identical to SecondString.
+ @retval !=0 FirstString is not identical to SecondString.
+
+**/
+INTN
+EFIAPI
+AsciiStrnCmp (
+ IN CONST CHAR8 *FirstString,
+ IN CONST CHAR8 *SecondString,
+ IN UINTN Length
+ );
+
+
+/**
+ Concatenates one Null-terminated ASCII string to another Null-terminated
+ ASCII string, and returns the concatenated ASCII string.
+
+ This function concatenates two Null-terminated ASCII strings. The contents of
+ Null-terminated ASCII string Source are concatenated to the end of Null-
+ terminated ASCII string Destination. The Null-terminated concatenated ASCII
+ String is returned.
+
+ If Destination is NULL, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and Destination contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero and concatenating Destination and
+ Source results in a ASCII string with more than PcdMaximumAsciiStringLength
+ ASCII characters, then ASSERT().
+
+ @param Destination Pointer to a Null-terminated ASCII string.
+ @param Source Pointer to a Null-terminated ASCII string.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrCat (
+ IN OUT CHAR8 *Destination,
+ IN CONST CHAR8 *Source
+ );
+
+
+/**
+ Concatenates one Null-terminated ASCII string with a maximum length to the
+ end of another Null-terminated ASCII string, and returns the concatenated
+ ASCII string.
+
+ This function concatenates two Null-terminated ASCII strings. The contents
+ of Null-terminated ASCII string Source are concatenated to the end of Null-
+ terminated ASCII string Destination, and Destination is returned. At most,
+ Length ASCII characters are concatenated from Source to the end of
+ Destination, and Destination is always Null-terminated. If Length is 0, then
+ Destination is returned unmodified. If Source and Destination overlap, then
+ the results are undefined.
+
+ If Length > 0 and Destination is NULL, then ASSERT().
+ If Length > 0 and Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Destination contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and concatenating Destination and
+ Source results in a ASCII string with more than PcdMaximumAsciiStringLength
+ ASCII characters not including the Null-terminator, then ASSERT().
+
+ @param Destination Pointer to a Null-terminated ASCII string.
+ @param Source Pointer to a Null-terminated ASCII string.
+ @param Length Maximum number of ASCII characters to concatenate from
+ Source.
+
+ @return Destination
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrnCat (
+ IN OUT CHAR8 *Destination,
+ IN CONST CHAR8 *Source,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the first occurance of a Null-terminated ASCII sub-string
+ in a Null-terminated ASCII string.
+
+ This function scans the contents of the ASCII string specified by String
+ and returns the first occurrence of SearchString. If SearchString is not
+ found in String, then NULL is returned. If the length of SearchString is zero,
+ then String is returned.
+
+ If String is NULL, then ASSERT().
+ If SearchString is NULL, then ASSERT().
+
+ If PcdMaximumAsciiStringLength is not zero, and SearchString or
+ String contains more than PcdMaximumAsciiStringLength Unicode characters
+ not including the Null-terminator, then ASSERT().
+
+ @param String Pointer to a Null-terminated ASCII string.
+ @param SearchString Pointer to a Null-terminated ASCII string to search for.
+
+ @retval NULL If the SearchString does not appear in String.
+ @retval !NULL If there is a match.
+
+**/
+CHAR8 *
+EFIAPI
+AsciiStrStr (
+ IN CONST CHAR8 *String,
+ IN CONST CHAR8 *SearchString
+ );
+
+
+/**
+ Convert a Null-terminated ASCII decimal string to a value of type
+ UINTN.
+
+ This function returns a value of type UINTN by interpreting the contents
+ of the ASCII string String as a decimal number. The format of the input
+ ASCII string String is:
+
+ [spaces] [decimal digits].
+
+ The valid decimal digit character is in the range [0-9]. The function will
+ ignore the pad space, which includes spaces or tab characters, before the digits.
+ The running zero in the beginning of [decimal digits] will be ignored. Then, the
+ function stops at the first character that is a not a valid decimal character or
+ Null-terminator, whichever on comes first.
+
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits, then 0 is returned.
+ If the number represented by String overflows according to the range defined by
+ UINTN, then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String Pointer to a Null-terminated ASCII string.
+
+ @retval UINTN
+
+**/
+UINTN
+EFIAPI
+AsciiStrDecimalToUintn (
+ IN CONST CHAR8 *String
+ );
+
+
+/**
+ Convert a Null-terminated ASCII decimal string to a value of type
+ UINT64.
+
+ This function returns a value of type UINT64 by interpreting the contents
+ of the ASCII string String as a decimal number. The format of the input
+ ASCII string String is:
+
+ [spaces] [decimal digits].
+
+ The valid decimal digit character is in the range [0-9]. The function will
+ ignore the pad space, which includes spaces or tab characters, before the digits.
+ The running zero in the beginning of [decimal digits] will be ignored. Then, the
+ function stops at the first character that is a not a valid decimal character or
+ Null-terminator, whichever on comes first.
+
+ If String has only pad spaces, then 0 is returned.
+ If String has no pad spaces or valid decimal digits, then 0 is returned.
+ If the number represented by String overflows according to the range defined by
+ UINT64, then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and String contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+
+ @param String Pointer to a Null-terminated ASCII string.
+
+ @retval UINT64
+
+**/
+UINT64
+EFIAPI
+AsciiStrDecimalToUint64 (
+ IN CONST CHAR8 *String
+ );
+
+
+/**
+ Convert a Null-terminated ASCII hexadecimal string to a value of type UINTN.
+
+ This function returns a value of type UINTN by interpreting the contents of
+ the ASCII string String as a hexadecimal number. The format of the input ASCII
+ string String is:
+
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix. If "x"
+ appears in the input string, it must be prefixed with at least one 0. The function
+ will ignore the pad space, which includes spaces or tab characters, before [zeros],
+ [x] or [hexadecimal digits]. The running zero before [x] or [hexadecimal digits]
+ will be ignored. Then, the decoding starts after [x] or the first valid hexadecimal
+ digit. Then, the function stops at the first character that is a not a valid
+ hexadecimal character or Null-terminator, whichever on comes first.
+
+ If String has only pad spaces, then 0 is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits, then
+ 0 is returned.
+
+ If the number represented by String overflows according to the range defined by UINTN,
+ then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero,
+ and String contains more than PcdMaximumAsciiStringLength ASCII characters not including
+ the Null-terminator, then ASSERT().
+
+ @param String Pointer to a Null-terminated ASCII string.
+
+ @retval UINTN
+
+**/
+UINTN
+EFIAPI
+AsciiStrHexToUintn (
+ IN CONST CHAR8 *String
+ );
+
+
+/**
+ Convert a Null-terminated ASCII hexadecimal string to a value of type UINT64.
+
+ This function returns a value of type UINT64 by interpreting the contents of
+ the ASCII string String as a hexadecimal number. The format of the input ASCII
+ string String is:
+
+ [spaces][zeros][x][hexadecimal digits].
+
+ The valid hexadecimal digit character is in the range [0-9], [a-f] and [A-F].
+ The prefix "0x" is optional. Both "x" and "X" is allowed in "0x" prefix. If "x"
+ appears in the input string, it must be prefixed with at least one 0. The function
+ will ignore the pad space, which includes spaces or tab characters, before [zeros],
+ [x] or [hexadecimal digits]. The running zero before [x] or [hexadecimal digits]
+ will be ignored. Then, the decoding starts after [x] or the first valid hexadecimal
+ digit. Then, the function stops at the first character that is a not a valid
+ hexadecimal character or Null-terminator, whichever on comes first.
+
+ If String has only pad spaces, then 0 is returned.
+ If String has no leading pad spaces, leading zeros or valid hexadecimal digits, then
+ 0 is returned.
+
+ If the number represented by String overflows according to the range defined by UINT64,
+ then ASSERT().
+ If String is NULL, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero,
+ and String contains more than PcdMaximumAsciiStringLength ASCII characters not including
+ the Null-terminator, then ASSERT().
+
+ @param String Pointer to a Null-terminated ASCII string.
+
+ @retval UINT64
+
+**/
+UINT64
+EFIAPI
+AsciiStrHexToUint64 (
+ IN CONST CHAR8 *String
+ );
+
+
+/**
+ Convert one Null-terminated ASCII string to a Null-terminated
+ Unicode string and returns the Unicode string.
+
+ This function converts the contents of the ASCII string Source to the Unicode
+ string Destination, and returns Destination. The function terminates the
+ Unicode string Destination by appending a Null-terminator character at the end.
+ The caller is responsible to make sure Destination points to a buffer with size
+ equal or greater than ((AsciiStrLen (Source) + 1) * sizeof (CHAR16)) in bytes.
+
+ If Destination is NULL, then ASSERT().
+ If Destination is not aligned on a 16-bit boundary, then ASSERT().
+ If Source is NULL, then ASSERT().
+ If Source and Destination overlap, then ASSERT().
+ If PcdMaximumAsciiStringLength is not zero, and Source contains more than
+ PcdMaximumAsciiStringLength ASCII characters not including the Null-terminator,
+ then ASSERT().
+ If PcdMaximumUnicodeStringLength is not zero, and Source contains more than
+ PcdMaximumUnicodeStringLength ASCII characters not including the
+ Null-terminator, then ASSERT().
+
+ @param Source Pointer to a Null-terminated ASCII string.
+ @param Destination Pointer to a Null-terminated Unicode string.
+
+ @return Destination
+
+**/
+CHAR16 *
+EFIAPI
+AsciiStrToUnicodeStr (
+ IN CONST CHAR8 *Source,
+ OUT CHAR16 *Destination
+ );
+
+
+/**
+ Converts an 8-bit value to an 8-bit BCD value.
+
+ Converts the 8-bit value specified by Value to BCD. The BCD value is
+ returned.
+
+ If Value >= 100, then ASSERT().
+
+ @param Value The 8-bit value to convert to BCD. Range 0..99.
+
+ @return The BCD value
+
+**/
+UINT8
+EFIAPI
+DecimalToBcd8 (
+ IN UINT8 Value
+ );
+
+
+/**
+ Converts an 8-bit BCD value to an 8-bit value.
+
+ Converts the 8-bit BCD value specified by Value to an 8-bit value. The 8-bit
+ value is returned.
+
+ If Value >= 0xA0, then ASSERT().
+ If (Value & 0x0F) >= 0x0A, then ASSERT().
+
+ @param Value The 8-bit BCD value to convert to an 8-bit value.
+
+ @return The 8-bit value is returned.
+
+**/
+UINT8
+EFIAPI
+BcdToDecimal8 (
+ IN UINT8 Value
+ );
+
+
+//
+// Linked List Functions and Macros
+//
+
+/**
+ Initializes the head node of a doubly linked list that is declared as a
+ global variable in a module.
+
+ Initializes the forward and backward links of a new linked list. After
+ initializing a linked list with this macro, the other linked list functions
+ may be used to add and remove nodes from the linked list. This macro results
+ in smaller executables by initializing the linked list in the data section,
+ instead if calling the InitializeListHead() function to perform the
+ equivalent operation.
+
+ @param ListHead The head note of a list to initiailize.
+
+**/
+#define INITIALIZE_LIST_HEAD_VARIABLE(ListHead) {&ListHead, &ListHead}
+
+
+/**
+ Initializes the head node of a doubly linked list, and returns the pointer to
+ the head node of the doubly linked list.
+
+ Initializes the forward and backward links of a new linked list. After
+ initializing a linked list with this function, the other linked list
+ functions may be used to add and remove nodes from the linked list. It is up
+ to the caller of this function to allocate the memory for ListHead.
+
+ If ListHead is NULL, then ASSERT().
+
+ @param ListHead A pointer to the head node of a new doubly linked list.
+
+ @return ListHead
+
+**/
+LIST_ENTRY *
+EFIAPI
+InitializeListHead (
+ IN LIST_ENTRY *ListHead
+ );
+
+
+/**
+ Adds a node to the beginning of a doubly linked list, and returns the pointer
+ to the head node of the doubly linked list.
+
+ Adds the node Entry at the beginning of the doubly linked list denoted by
+ ListHead, and returns ListHead.
+
+ If ListHead is NULL, then ASSERT().
+ If Entry is NULL, then ASSERT().
+ If ListHead was not initialized with InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLenth is not zero, and prior to insertion the number
+ of nodes in ListHead, including the ListHead node, is greater than or
+ equal to PcdMaximumLinkedListLength, then ASSERT().
+
+ @param ListHead A pointer to the head node of a doubly linked list.
+ @param Entry A pointer to a node that is to be inserted at the beginning
+ of a doubly linked list.
+
+ @return ListHead
+
+**/
+LIST_ENTRY *
+EFIAPI
+InsertHeadList (
+ IN LIST_ENTRY *ListHead,
+ IN LIST_ENTRY *Entry
+ );
+
+
+/**
+ Adds a node to the end of a doubly linked list, and returns the pointer to
+ the head node of the doubly linked list.
+
+ Adds the node Entry to the end of the doubly linked list denoted by ListHead,
+ and returns ListHead.
+
+ If ListHead is NULL, then ASSERT().
+ If Entry is NULL, then ASSERT().
+ If ListHead was not initialized with InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLenth is not zero, and prior to insertion the number
+ of nodes in ListHead, including the ListHead node, is greater than or
+ equal to PcdMaximumLinkedListLength, then ASSERT().
+
+ @param ListHead A pointer to the head node of a doubly linked list.
+ @param Entry A pointer to a node that is to be added at the end of the
+ doubly linked list.
+
+ @return ListHead
+
+**/
+LIST_ENTRY *
+EFIAPI
+InsertTailList (
+ IN LIST_ENTRY *ListHead,
+ IN LIST_ENTRY *Entry
+ );
+
+
+/**
+ Retrieves the first node of a doubly linked list.
+
+ Returns the first node of a doubly linked list. List must have been
+ initialized with InitializeListHead(). If List is empty, then NULL is
+ returned.
+
+ If List is NULL, then ASSERT().
+ If List was not initialized with InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLenth is not zero, and the number of nodes
+ in List, including the List node, is greater than or equal to
+ PcdMaximumLinkedListLength, then ASSERT().
+
+ @param List A pointer to the head node of a doubly linked list.
+
+ @return The first node of a doubly linked list.
+ @retval NULL The list is empty.
+
+**/
+LIST_ENTRY *
+EFIAPI
+GetFirstNode (
+ IN CONST LIST_ENTRY *List
+ );
+
+
+/**
+ Retrieves the next node of a doubly linked list.
+
+ Returns the node of a doubly linked list that follows Node. List must have
+ been initialized with InitializeListHead(). If List is empty, then List is
+ returned.
+
+ If List is NULL, then ASSERT().
+ If Node is NULL, then ASSERT().
+ If List was not initialized with InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLenth is not zero, and List contains more than
+ PcdMaximumLinkedListLenth nodes, then ASSERT().
+ If Node is not a node in List, then ASSERT().
+
+ @param List A pointer to the head node of a doubly linked list.
+ @param Node A pointer to a node in the doubly linked list.
+
+ @return Pointer to the next node if one exists. Otherwise a null value which
+ is actually List is returned.
+
+**/
+LIST_ENTRY *
+EFIAPI
+GetNextNode (
+ IN CONST LIST_ENTRY *List,
+ IN CONST LIST_ENTRY *Node
+ );
+
+
+/**
+ Checks to see if a doubly linked list is empty or not.
+
+ Checks to see if the doubly linked list is empty. If the linked list contains
+ zero nodes, this function returns TRUE. Otherwise, it returns FALSE.
+
+ If ListHead is NULL, then ASSERT().
+ If ListHead was not initialized with InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLenth is not zero, and the number of nodes
+ in List, including the List node, is greater than or equal to
+ PcdMaximumLinkedListLength, then ASSERT().
+
+ @param ListHead A pointer to the head node of a doubly linked list.
+
+ @retval TRUE The linked list is empty.
+ @retval FALSE The linked list is not empty.
+
+**/
+BOOLEAN
+EFIAPI
+IsListEmpty (
+ IN CONST LIST_ENTRY *ListHead
+ );
+
+
+/**
+ Determines if a node in a doubly linked list is null.
+
+ Returns FALSE if Node is one of the nodes in the doubly linked list specified
+ by List. Otherwise, TRUE is returned. List must have been initialized with
+ InitializeListHead().
+
+ If List is NULL, then ASSERT().
+ If Node is NULL, then ASSERT().
+ If List was not initialized with InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLenth is not zero, and the number of nodes
+ in List, including the List node, is greater than or equal to
+ PcdMaximumLinkedListLength, then ASSERT().
+ If Node is not a node in List and Node is not equal to List, then ASSERT().
+
+ @param List A pointer to the head node of a doubly linked list.
+ @param Node A pointer to a node in the doubly linked list.
+
+ @retval TRUE Node is one of the nodes in the doubly linked list.
+ @retval FALSE Node is not one of the nodes in the doubly linked list.
+
+**/
+BOOLEAN
+EFIAPI
+IsNull (
+ IN CONST LIST_ENTRY *List,
+ IN CONST LIST_ENTRY *Node
+ );
+
+
+/**
+ Determines if a node the last node in a doubly linked list.
+
+ Returns TRUE if Node is the last node in the doubly linked list specified by
+ List. Otherwise, FALSE is returned. List must have been initialized with
+ InitializeListHead().
+
+ If List is NULL, then ASSERT().
+ If Node is NULL, then ASSERT().
+ If List was not initialized with InitializeListHead(), then ASSERT().
+ If PcdMaximumLinkedListLenth is not zero, and the number of nodes
+ in List, including the List node, is greater than or equal to
+ PcdMaximumLinkedListLength, then ASSERT().
+ If Node is not a node in List, then ASSERT().
+
+ @param List A pointer to the head node of a doubly linked list.
+ @param Node A pointer to a node in the doubly linked list.
+
+ @retval TRUE Node is the last node in the linked list.
+ @retval FALSE Node is not the last node in the linked list.
+
+**/
+BOOLEAN
+EFIAPI
+IsNodeAtEnd (
+ IN CONST LIST_ENTRY *List,
+ IN CONST LIST_ENTRY *Node
+ );
+
+
+/**
+ Swaps the location of two nodes in a doubly linked list, and returns the
+ first node after the swap.
+
+ If FirstEntry is identical to SecondEntry, then SecondEntry is returned.
+ Otherwise, the location of the FirstEntry node is swapped with the location
+ of the SecondEntry node in a doubly linked list. SecondEntry must be in the
+ same double linked list as FirstEntry and that double linked list must have
+ been initialized with InitializeListHead(). SecondEntry is returned after the
+ nodes are swapped.
+
+ If FirstEntry is NULL, then ASSERT().
+ If SecondEntry is NULL, then ASSERT().
+ If SecondEntry and FirstEntry are not in the same linked list, then ASSERT().
+ If PcdMaximumLinkedListLength is not zero, and the number of nodes in the
+ linked list containing the FirstEntry and SecondEntry nodes, including
+ the FirstEntry and SecondEntry nodes, is greater than or equal to
+ PcdMaximumLinkedListLength, then ASSERT().
+
+ @param FirstEntry A pointer to a node in a linked list.
+ @param SecondEntry A pointer to another node in the same linked list.
+
+**/
+LIST_ENTRY *
+EFIAPI
+SwapListEntries (
+ IN LIST_ENTRY *FirstEntry,
+ IN LIST_ENTRY *SecondEntry
+ );
+
+
+/**
+ Removes a node from a doubly linked list, and returns the node that follows
+ the removed node.
+
+ Removes the node Entry from a doubly linked list. It is up to the caller of
+ this function to release the memory used by this node if that is required. On
+ exit, the node following Entry in the doubly linked list is returned. If
+ Entry is the only node in the linked list, then the head node of the linked
+ list is returned.
+
+ If Entry is NULL, then ASSERT().
+ If Entry is the head node of an empty list, then ASSERT().
+ If PcdMaximumLinkedListLength is not zero, and the number of nodes in the
+ linked list containing Entry, including the Entry node, is greater than
+ or equal to PcdMaximumLinkedListLength, then ASSERT().
+
+ @param Entry A pointer to a node in a linked list
+
+ @return Entry
+
+**/
+LIST_ENTRY *
+EFIAPI
+RemoveEntryList (
+ IN CONST LIST_ENTRY *Entry
+ );
+
+//
+// Math Services
+//
+
+/**
+ Shifts a 64-bit integer left between 0 and 63 bits. The low bits are filled
+ with zeros. The shifted value is returned.
+
+ This function shifts the 64-bit value Operand to the left by Count bits. The
+ low Count bits are set to zero. The shifted value is returned.
+
+ If Count is greater than 63, then ASSERT().
+
+ @param Operand The 64-bit operand to shift left.
+ @param Count The number of bits to shift left.
+
+ @return Operand << Count
+
+**/
+UINT64
+EFIAPI
+LShiftU64 (
+ IN UINT64 Operand,
+ IN UINTN Count
+ );
+
+
+/**
+ Shifts a 64-bit integer right between 0 and 63 bits. This high bits are
+ filled with zeros. The shifted value is returned.
+
+ This function shifts the 64-bit value Operand to the right by Count bits. The
+ high Count bits are set to zero. The shifted value is returned.
+
+ If Count is greater than 63, then ASSERT().
+
+ @param Operand The 64-bit operand to shift right.
+ @param Count The number of bits to shift right.
+
+ @return Operand >> Count
+
+**/
+UINT64
+EFIAPI
+RShiftU64 (
+ IN UINT64 Operand,
+ IN UINTN Count
+ );
+
+
+/**
+ Shifts a 64-bit integer right between 0 and 63 bits. The high bits are filled
+ with original integer's bit 63. The shifted value is returned.
+
+ This function shifts the 64-bit value Operand to the right by Count bits. The
+ high Count bits are set to bit 63 of Operand. The shifted value is returned.
+
+ If Count is greater than 63, then ASSERT().
+
+ @param Operand The 64-bit operand to shift right.
+ @param Count The number of bits to shift right.
+
+ @return Operand >> Count
+
+**/
+UINT64
+EFIAPI
+ARShiftU64 (
+ IN UINT64 Operand,
+ IN UINTN Count
+ );
+
+
+/**
+ Rotates a 32-bit integer left between 0 and 31 bits, filling the low bits
+ with the high bits that were rotated.
+
+ This function rotates the 32-bit value Operand to the left by Count bits. The
+ low Count bits are fill with the high Count bits of Operand. The rotated
+ value is returned.
+
+ If Count is greater than 31, then ASSERT().
+
+ @param Operand The 32-bit operand to rotate left.
+ @param Count The number of bits to rotate left.
+
+ @return Operand <<< Count
+
+**/
+UINT32
+EFIAPI
+LRotU32 (
+ IN UINT32 Operand,
+ IN UINTN Count
+ );
+
+
+/**
+ Rotates a 32-bit integer right between 0 and 31 bits, filling the high bits
+ with the low bits that were rotated.
+
+ This function rotates the 32-bit value Operand to the right by Count bits.
+ The high Count bits are fill with the low Count bits of Operand. The rotated
+ value is returned.
+
+ If Count is greater than 31, then ASSERT().
+
+ @param Operand The 32-bit operand to rotate right.
+ @param Count The number of bits to rotate right.
+
+ @return Operand >>> Count
+
+**/
+UINT32
+EFIAPI
+RRotU32 (
+ IN UINT32 Operand,
+ IN UINTN Count
+ );
+
+
+/**
+ Rotates a 64-bit integer left between 0 and 63 bits, filling the low bits
+ with the high bits that were rotated.
+
+ This function rotates the 64-bit value Operand to the left by Count bits. The
+ low Count bits are fill with the high Count bits of Operand. The rotated
+ value is returned.
+
+ If Count is greater than 63, then ASSERT().
+
+ @param Operand The 64-bit operand to rotate left.
+ @param Count The number of bits to rotate left.
+
+ @return Operand <<< Count
+
+**/
+UINT64
+EFIAPI
+LRotU64 (
+ IN UINT64 Operand,
+ IN UINTN Count
+ );
+
+
+/**
+ Rotates a 64-bit integer right between 0 and 63 bits, filling the high bits
+ with the high low bits that were rotated.
+
+ This function rotates the 64-bit value Operand to the right by Count bits.
+ The high Count bits are fill with the low Count bits of Operand. The rotated
+ value is returned.
+
+ If Count is greater than 63, then ASSERT().
+
+ @param Operand The 64-bit operand to rotate right.
+ @param Count The number of bits to rotate right.
+
+ @return Operand >>> Count
+
+**/
+UINT64
+EFIAPI
+RRotU64 (
+ IN UINT64 Operand,
+ IN UINTN Count
+ );
+
+
+/**
+ Returns the bit position of the lowest bit set in a 32-bit value.
+
+ This function computes the bit position of the lowest bit set in the 32-bit
+ value specified by Operand. If Operand is zero, then -1 is returned.
+ Otherwise, a value between 0 and 31 is returned.
+
+ @param Operand The 32-bit operand to evaluate.
+
+ @return Position of the lowest bit set in Operand if found.
+ @retval -1 Operand is zero.
+
+**/
+INTN
+EFIAPI
+LowBitSet32 (
+ IN UINT32 Operand
+ );
+
+
+/**
+ Returns the bit position of the lowest bit set in a 64-bit value.
+
+ This function computes the bit position of the lowest bit set in the 64-bit
+ value specified by Operand. If Operand is zero, then -1 is returned.
+ Otherwise, a value between 0 and 63 is returned.
+
+ @param Operand The 64-bit operand to evaluate.
+
+ @return Position of the lowest bit set in Operand if found.
+ @retval -1 Operand is zero.
+
+**/
+INTN
+EFIAPI
+LowBitSet64 (
+ IN UINT64 Operand
+ );
+
+
+/**
+ Returns the bit position of the highest bit set in a 32-bit value. Equivalent
+ to log2(x).
+
+ This function computes the bit position of the highest bit set in the 32-bit
+ value specified by Operand. If Operand is zero, then -1 is returned.
+ Otherwise, a value between 0 and 31 is returned.
+
+ @param Operand The 32-bit operand to evaluate.
+
+ @return Position of the highest bit set in Operand if found.
+ @retval -1 Operand is zero.
+
+**/
+INTN
+EFIAPI
+HighBitSet32 (
+ IN UINT32 Operand
+ );
+
+
+/**
+ Returns the bit position of the highest bit set in a 64-bit value. Equivalent
+ to log2(x).
+
+ This function computes the bit position of the highest bit set in the 64-bit
+ value specified by Operand. If Operand is zero, then -1 is returned.
+ Otherwise, a value between 0 and 63 is returned.
+
+ @param Operand The 64-bit operand to evaluate.
+
+ @return Position of the highest bit set in Operand if found.
+ @retval -1 Operand is zero.
+
+**/
+INTN
+EFIAPI
+HighBitSet64 (
+ IN UINT64 Operand
+ );
+
+
+/**
+ Returns the value of the highest bit set in a 32-bit value. Equivalent to
+ 1 << HighBitSet32(x).
+
+ This function computes the value of the highest bit set in the 32-bit value
+ specified by Operand. If Operand is zero, then zero is returned.
+
+ @param Operand The 32-bit operand to evaluate.
+
+ @return 1 << HighBitSet32(Operand)
+ @retval 0 Operand is zero.
+
+**/
+UINT32
+EFIAPI
+GetPowerOfTwo32 (
+ IN UINT32 Operand
+ );
+
+
+/**
+ Returns the value of the highest bit set in a 64-bit value. Equivalent to
+ 1 << HighBitSet64(x).
+
+ This function computes the value of the highest bit set in the 64-bit value
+ specified by Operand. If Operand is zero, then zero is returned.
+
+ @param Operand The 64-bit operand to evaluate.
+
+ @return 1 << HighBitSet64(Operand)
+ @retval 0 Operand is zero.
+
+**/
+UINT64
+EFIAPI
+GetPowerOfTwo64 (
+ IN UINT64 Operand
+ );
+
+
+/**
+ Switches the endianess of a 16-bit integer.
+
+ This function swaps the bytes in a 16-bit unsigned value to switch the value
+ from little endian to big endian or vice versa. The byte swapped value is
+ returned.
+
+ @param Value Operand A 16-bit unsigned value.
+
+ @return The byte swaped Operand.
+
+**/
+UINT16
+EFIAPI
+SwapBytes16 (
+ IN UINT16 Value
+ );
+
+
+/**
+ Switches the endianess of a 32-bit integer.
+
+ This function swaps the bytes in a 32-bit unsigned value to switch the value
+ from little endian to big endian or vice versa. The byte swapped value is
+ returned.
+
+ @param Value Operand A 32-bit unsigned value.
+
+ @return The byte swaped Operand.
+
+**/
+UINT32
+EFIAPI
+SwapBytes32 (
+ IN UINT32 Value
+ );
+
+
+/**
+ Switches the endianess of a 64-bit integer.
+
+ This function swaps the bytes in a 64-bit unsigned value to switch the value
+ from little endian to big endian or vice versa. The byte swapped value is
+ returned.
+
+ @param Value Operand A 64-bit unsigned value.
+
+ @return The byte swaped Operand.
+
+**/
+UINT64
+EFIAPI
+SwapBytes64 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Multiples a 64-bit unsigned integer by a 32-bit unsigned integer and
+ generates a 64-bit unsigned result.
+
+ This function multiples the 64-bit unsigned value Multiplicand by the 32-bit
+ unsigned value Multiplier and generates a 64-bit unsigned result. This 64-
+ bit unsigned result is returned.
+
+ If the result overflows, then ASSERT().
+
+ @param Multiplicand A 64-bit unsigned value.
+ @param Multiplier A 32-bit unsigned value.
+
+ @return Multiplicand * Multiplier
+
+**/
+UINT64
+EFIAPI
+MultU64x32 (
+ IN UINT64 Multiplicand,
+ IN UINT32 Multiplier
+ );
+
+
+/**
+ Multiples a 64-bit unsigned integer by a 64-bit unsigned integer and
+ generates a 64-bit unsigned result.
+
+ This function multiples the 64-bit unsigned value Multiplicand by the 64-bit
+ unsigned value Multiplier and generates a 64-bit unsigned result. This 64-
+ bit unsigned result is returned.
+
+ If the result overflows, then ASSERT().
+
+ @param Multiplicand A 64-bit unsigned value.
+ @param Multiplier A 64-bit unsigned value.
+
+ @return Multiplicand * Multiplier
+
+**/
+UINT64
+EFIAPI
+MultU64x64 (
+ IN UINT64 Multiplicand,
+ IN UINT64 Multiplier
+ );
+
+
+/**
+ Multiples a 64-bit signed integer by a 64-bit signed integer and generates a
+ 64-bit signed result.
+
+ This function multiples the 64-bit signed value Multiplicand by the 64-bit
+ signed value Multiplier and generates a 64-bit signed result. This 64-bit
+ signed result is returned.
+
+ If the result overflows, then ASSERT().
+
+ @param Multiplicand A 64-bit signed value.
+ @param Multiplier A 64-bit signed value.
+
+ @return Multiplicand * Multiplier
+
+**/
+INT64
+EFIAPI
+MultS64x64 (
+ IN INT64 Multiplicand,
+ IN INT64 Multiplier
+ );
+
+
+/**
+ Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates
+ a 64-bit unsigned result.
+
+ This function divides the 64-bit unsigned value Dividend by the 32-bit
+ unsigned value Divisor and generates a 64-bit unsigned quotient. This
+ function returns the 64-bit unsigned quotient.
+
+ If Divisor is 0, then ASSERT().
+
+ @param Dividend A 64-bit unsigned value.
+ @param Divisor A 32-bit unsigned value.
+
+ @return Dividend / Divisor
+
+**/
+UINT64
+EFIAPI
+DivU64x32 (
+ IN UINT64 Dividend,
+ IN UINT32 Divisor
+ );
+
+
+/**
+ Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates
+ a 32-bit unsigned remainder.
+
+ This function divides the 64-bit unsigned value Dividend by the 32-bit
+ unsigned value Divisor and generates a 32-bit remainder. This function
+ returns the 32-bit unsigned remainder.
+
+ If Divisor is 0, then ASSERT().
+
+ @param Dividend A 64-bit unsigned value.
+ @param Divisor A 32-bit unsigned value.
+
+ @return Dividend % Divisor
+
+**/
+UINT32
+EFIAPI
+ModU64x32 (
+ IN UINT64 Dividend,
+ IN UINT32 Divisor
+ );
+
+
+/**
+ Divides a 64-bit unsigned integer by a 32-bit unsigned integer and generates
+ a 64-bit unsigned result and an optional 32-bit unsigned remainder.
+
+ This function divides the 64-bit unsigned value Dividend by the 32-bit
+ unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder
+ is not NULL, then the 32-bit unsigned remainder is returned in Remainder.
+ This function returns the 64-bit unsigned quotient.
+
+ If Divisor is 0, then ASSERT().
+
+ @param Dividend A 64-bit unsigned value.
+ @param Divisor A 32-bit unsigned value.
+ @param Remainder A pointer to a 32-bit unsigned value. This parameter is
+ optional and may be NULL.
+
+ @return Dividend / Divisor
+
+**/
+UINT64
+EFIAPI
+DivU64x32Remainder (
+ IN UINT64 Dividend,
+ IN UINT32 Divisor,
+ OUT UINT32 *Remainder OPTIONAL
+ );
+
+
+/**
+ Divides a 64-bit unsigned integer by a 64-bit unsigned integer and generates
+ a 64-bit unsigned result and an optional 64-bit unsigned remainder.
+
+ This function divides the 64-bit unsigned value Dividend by the 64-bit
+ unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder
+ is not NULL, then the 64-bit unsigned remainder is returned in Remainder.
+ This function returns the 64-bit unsigned quotient.
+
+ If Divisor is 0, then ASSERT().
+
+ @param Dividend A 64-bit unsigned value.
+ @param Divisor A 64-bit unsigned value.
+ @param Remainder A pointer to a 64-bit unsigned value. This parameter is
+ optional and may be NULL.
+
+ @return Dividend / Divisor
+
+**/
+UINT64
+EFIAPI
+DivU64x64Remainder (
+ IN UINT64 Dividend,
+ IN UINT64 Divisor,
+ OUT UINT64 *Remainder OPTIONAL
+ );
+
+
+/**
+ Divides a 64-bit signed integer by a 64-bit signed integer and generates a
+ 64-bit signed result and a optional 64-bit signed remainder.
+
+ This function divides the 64-bit signed value Dividend by the 64-bit signed
+ value Divisor and generates a 64-bit signed quotient. If Remainder is not
+ NULL, then the 64-bit signed remainder is returned in Remainder. This
+ function returns the 64-bit signed quotient.
+
+ If Divisor is 0, then ASSERT().
+
+ @param Dividend A 64-bit signed value.
+ @param Divisor A 64-bit signed value.
+ @param Remainder A pointer to a 64-bit signed value. This parameter is
+ optional and may be NULL.
+
+ @return Dividend / Divisor
+
+**/
+INT64
+EFIAPI
+DivS64x64Remainder (
+ IN INT64 Dividend,
+ IN INT64 Divisor,
+ OUT INT64 *Remainder OPTIONAL
+ );
+
+
+/**
+ Reads a 16-bit value from memory that may be unaligned.
+
+ This function returns the 16-bit value pointed to by Buffer. The function
+ guarantees that the read operation does not produce an alignment fault.
+
+ If the Buffer is NULL, then ASSERT().
+
+ @param Uint16 Pointer to a 16-bit value that may be unaligned.
+
+ @return *Uint16
+
+**/
+UINT16
+EFIAPI
+ReadUnaligned16 (
+ IN CONST UINT16 *Uint16
+ );
+
+
+/**
+ Writes a 16-bit value to memory that may be unaligned.
+
+ This function writes the 16-bit value specified by Value to Buffer. Value is
+ returned. The function guarantees that the write operation does not produce
+ an alignment fault.
+
+ If the Buffer is NULL, then ASSERT().
+
+ @param Uint16 Pointer to a 16-bit value that may be unaligned.
+ @param Value 16-bit value to write to Buffer.
+
+ @return Value
+
+**/
+UINT16
+EFIAPI
+WriteUnaligned16 (
+ OUT UINT16 *Uint16,
+ IN UINT16 Value
+ );
+
+
+/**
+ Reads a 24-bit value from memory that may be unaligned.
+
+ This function returns the 24-bit value pointed to by Buffer. The function
+ guarantees that the read operation does not produce an alignment fault.
+
+ If the Buffer is NULL, then ASSERT().
+
+ @param Buffer Pointer to a 24-bit value that may be unaligned.
+
+ @return The value read.
+
+**/
+UINT32
+EFIAPI
+ReadUnaligned24 (
+ IN CONST UINT32 *Buffer
+ );
+
+
+/**
+ Writes a 24-bit value to memory that may be unaligned.
+
+ This function writes the 24-bit value specified by Value to Buffer. Value is
+ returned. The function guarantees that the write operation does not produce
+ an alignment fault.
+
+ If the Buffer is NULL, then ASSERT().
+
+ @param Buffer Pointer to a 24-bit value that may be unaligned.
+ @param Value 24-bit value to write to Buffer.
+
+ @return The value written.
+
+**/
+UINT32
+EFIAPI
+WriteUnaligned24 (
+ OUT UINT32 *Buffer,
+ IN UINT32 Value
+ );
+
+
+/**
+ Reads a 32-bit value from memory that may be unaligned.
+
+ This function returns the 32-bit value pointed to by Buffer. The function
+ guarantees that the read operation does not produce an alignment fault.
+
+ If the Buffer is NULL, then ASSERT().
+
+ @param Uint32 Pointer to a 32-bit value that may be unaligned.
+
+ @return *Uint32
+
+**/
+UINT32
+EFIAPI
+ReadUnaligned32 (
+ IN CONST UINT32 *Uint32
+ );
+
+
+/**
+ Writes a 32-bit value to memory that may be unaligned.
+
+ This function writes the 32-bit value specified by Value to Buffer. Value is
+ returned. The function guarantees that the write operation does not produce
+ an alignment fault.
+
+ If the Buffer is NULL, then ASSERT().
+
+ @param Uint32 Pointer to a 32-bit value that may be unaligned.
+ @param Value 32-bit value to write to Buffer.
+
+ @return Value
+
+**/
+UINT32
+EFIAPI
+WriteUnaligned32 (
+ OUT UINT32 *Uint32,
+ IN UINT32 Value
+ );
+
+
+/**
+ Reads a 64-bit value from memory that may be unaligned.
+
+ This function returns the 64-bit value pointed to by Buffer. The function
+ guarantees that the read operation does not produce an alignment fault.
+
+ If the Buffer is NULL, then ASSERT().
+
+ @param Uint64 Pointer to a 64-bit value that may be unaligned.
+
+ @return *Uint64
+
+**/
+UINT64
+EFIAPI
+ReadUnaligned64 (
+ IN CONST UINT64 *Uint64
+ );
+
+
+/**
+ Writes a 64-bit value to memory that may be unaligned.
+
+ This function writes the 64-bit value specified by Value to Buffer. Value is
+ returned. The function guarantees that the write operation does not produce
+ an alignment fault.
+
+ If the Buffer is NULL, then ASSERT().
+
+ @param Uint64 Pointer to a 64-bit value that may be unaligned.
+ @param Value 64-bit value to write to Buffer.
+
+ @return Value
+
+**/
+UINT64
+EFIAPI
+WriteUnaligned64 (
+ OUT UINT64 *Uint64,
+ IN UINT64 Value
+ );
+
+
+//
+// Bit Field Functions
+//
+
+/**
+ Returns a bit field from an 8-bit value.
+
+ Returns the bitfield specified by the StartBit and the EndBit from Operand.
+
+ If 8-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 7, then ASSERT().
+ If EndBit is greater than 7, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..7.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..7.
+
+ @return The bit field read.
+
+**/
+UINT8
+EFIAPI
+BitFieldRead8 (
+ IN UINT8 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit
+ );
+
+
+/**
+ Writes a bit field to an 8-bit value, and returns the result.
+
+ Writes Value to the bit field specified by the StartBit and the EndBit in
+ Operand. All other bits in Operand are preserved. The new 8-bit value is
+ returned.
+
+ If 8-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 7, then ASSERT().
+ If EndBit is greater than 7, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..7.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..7.
+ @param Value New value of the bit field.
+
+ @return The new 8-bit value.
+
+**/
+UINT8
+EFIAPI
+BitFieldWrite8 (
+ IN UINT8 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT8 Value
+ );
+
+
+/**
+ Reads a bit field from an 8-bit value, performs a bitwise OR, and returns the
+ result.
+
+ Performs a bitwise inclusive OR between the bit field specified by StartBit
+ and EndBit in Operand and the value specified by OrData. All other bits in
+ Operand are preserved. The new 8-bit value is returned.
+
+ If 8-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 7, then ASSERT().
+ If EndBit is greater than 7, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..7.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..7.
+ @param OrData The value to OR with the read value from the value
+
+ @return The new 8-bit value.
+
+**/
+UINT8
+EFIAPI
+BitFieldOr8 (
+ IN UINT8 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT8 OrData
+ );
+
+
+/**
+ Reads a bit field from an 8-bit value, performs a bitwise AND, and returns
+ the result.
+
+ Performs a bitwise AND between the bit field specified by StartBit and EndBit
+ in Operand and the value specified by AndData. All other bits in Operand are
+ preserved. The new 8-bit value is returned.
+
+ If 8-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 7, then ASSERT().
+ If EndBit is greater than 7, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..7.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..7.
+ @param AndData The value to AND with the read value from the value.
+
+ @return The new 8-bit value.
+
+**/
+UINT8
+EFIAPI
+BitFieldAnd8 (
+ IN UINT8 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT8 AndData
+ );
+
+
+/**
+ Reads a bit field from an 8-bit value, performs a bitwise AND followed by a
+ bitwise OR, and returns the result.
+
+ Performs a bitwise AND between the bit field specified by StartBit and EndBit
+ in Operand and the value specified by AndData, followed by a bitwise
+ inclusive OR with value specified by OrData. All other bits in Operand are
+ preserved. The new 8-bit value is returned.
+
+ If 8-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 7, then ASSERT().
+ If EndBit is greater than 7, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..7.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..7.
+ @param AndData The value to AND with the read value from the value.
+ @param OrData The value to OR with the result of the AND operation.
+
+ @return The new 8-bit value.
+
+**/
+UINT8
+EFIAPI
+BitFieldAndThenOr8 (
+ IN UINT8 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT8 AndData,
+ IN UINT8 OrData
+ );
+
+
+/**
+ Returns a bit field from a 16-bit value.
+
+ Returns the bitfield specified by the StartBit and the EndBit from Operand.
+
+ If 16-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 15, then ASSERT().
+ If EndBit is greater than 15, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..15.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..15.
+
+ @return The bit field read.
+
+**/
+UINT16
+EFIAPI
+BitFieldRead16 (
+ IN UINT16 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit
+ );
+
+
+/**
+ Writes a bit field to a 16-bit value, and returns the result.
+
+ Writes Value to the bit field specified by the StartBit and the EndBit in
+ Operand. All other bits in Operand are preserved. The new 16-bit value is
+ returned.
+
+ If 16-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 15, then ASSERT().
+ If EndBit is greater than 15, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..15.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..15.
+ @param Value New value of the bit field.
+
+ @return The new 16-bit value.
+
+**/
+UINT16
+EFIAPI
+BitFieldWrite16 (
+ IN UINT16 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT16 Value
+ );
+
+
+/**
+ Reads a bit field from a 16-bit value, performs a bitwise OR, and returns the
+ result.
+
+ Performs a bitwise inclusive OR between the bit field specified by StartBit
+ and EndBit in Operand and the value specified by OrData. All other bits in
+ Operand are preserved. The new 16-bit value is returned.
+
+ If 16-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 15, then ASSERT().
+ If EndBit is greater than 15, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..15.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..15.
+ @param OrData The value to OR with the read value from the value
+
+ @return The new 16-bit value.
+
+**/
+UINT16
+EFIAPI
+BitFieldOr16 (
+ IN UINT16 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT16 OrData
+ );
+
+
+/**
+ Reads a bit field from a 16-bit value, performs a bitwise AND, and returns
+ the result.
+
+ Performs a bitwise AND between the bit field specified by StartBit and EndBit
+ in Operand and the value specified by AndData. All other bits in Operand are
+ preserved. The new 16-bit value is returned.
+
+ If 16-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 15, then ASSERT().
+ If EndBit is greater than 15, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..15.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..15.
+ @param AndData The value to AND with the read value from the value
+
+ @return The new 16-bit value.
+
+**/
+UINT16
+EFIAPI
+BitFieldAnd16 (
+ IN UINT16 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT16 AndData
+ );
+
+
+/**
+ Reads a bit field from a 16-bit value, performs a bitwise AND followed by a
+ bitwise OR, and returns the result.
+
+ Performs a bitwise AND between the bit field specified by StartBit and EndBit
+ in Operand and the value specified by AndData, followed by a bitwise
+ inclusive OR with value specified by OrData. All other bits in Operand are
+ preserved. The new 16-bit value is returned.
+
+ If 16-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 15, then ASSERT().
+ If EndBit is greater than 15, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..15.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..15.
+ @param AndData The value to AND with the read value from the value.
+ @param OrData The value to OR with the result of the AND operation.
+
+ @return The new 16-bit value.
+
+**/
+UINT16
+EFIAPI
+BitFieldAndThenOr16 (
+ IN UINT16 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT16 AndData,
+ IN UINT16 OrData
+ );
+
+
+/**
+ Returns a bit field from a 32-bit value.
+
+ Returns the bitfield specified by the StartBit and the EndBit from Operand.
+
+ If 32-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 31, then ASSERT().
+ If EndBit is greater than 31, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..31.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..31.
+
+ @return The bit field read.
+
+**/
+UINT32
+EFIAPI
+BitFieldRead32 (
+ IN UINT32 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit
+ );
+
+
+/**
+ Writes a bit field to a 32-bit value, and returns the result.
+
+ Writes Value to the bit field specified by the StartBit and the EndBit in
+ Operand. All other bits in Operand are preserved. The new 32-bit value is
+ returned.
+
+ If 32-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 31, then ASSERT().
+ If EndBit is greater than 31, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..31.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..31.
+ @param Value New value of the bit field.
+
+ @return The new 32-bit value.
+
+**/
+UINT32
+EFIAPI
+BitFieldWrite32 (
+ IN UINT32 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT32 Value
+ );
+
+
+/**
+ Reads a bit field from a 32-bit value, performs a bitwise OR, and returns the
+ result.
+
+ Performs a bitwise inclusive OR between the bit field specified by StartBit
+ and EndBit in Operand and the value specified by OrData. All other bits in
+ Operand are preserved. The new 32-bit value is returned.
+
+ If 32-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 31, then ASSERT().
+ If EndBit is greater than 31, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..31.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..31.
+ @param OrData The value to OR with the read value from the value
+
+ @return The new 32-bit value.
+
+**/
+UINT32
+EFIAPI
+BitFieldOr32 (
+ IN UINT32 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT32 OrData
+ );
+
+
+/**
+ Reads a bit field from a 32-bit value, performs a bitwise AND, and returns
+ the result.
+
+ Performs a bitwise AND between the bit field specified by StartBit and EndBit
+ in Operand and the value specified by AndData. All other bits in Operand are
+ preserved. The new 32-bit value is returned.
+
+ If 32-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 31, then ASSERT().
+ If EndBit is greater than 31, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..31.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..31.
+ @param AndData The value to AND with the read value from the value
+
+ @return The new 32-bit value.
+
+**/
+UINT32
+EFIAPI
+BitFieldAnd32 (
+ IN UINT32 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT32 AndData
+ );
+
+
+/**
+ Reads a bit field from a 32-bit value, performs a bitwise AND followed by a
+ bitwise OR, and returns the result.
+
+ Performs a bitwise AND between the bit field specified by StartBit and EndBit
+ in Operand and the value specified by AndData, followed by a bitwise
+ inclusive OR with value specified by OrData. All other bits in Operand are
+ preserved. The new 32-bit value is returned.
+
+ If 32-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 31, then ASSERT().
+ If EndBit is greater than 31, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..31.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..31.
+ @param AndData The value to AND with the read value from the value.
+ @param OrData The value to OR with the result of the AND operation.
+
+ @return The new 32-bit value.
+
+**/
+UINT32
+EFIAPI
+BitFieldAndThenOr32 (
+ IN UINT32 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT32 AndData,
+ IN UINT32 OrData
+ );
+
+
+/**
+ Returns a bit field from a 64-bit value.
+
+ Returns the bitfield specified by the StartBit and the EndBit from Operand.
+
+ If 64-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 63, then ASSERT().
+ If EndBit is greater than 63, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+
+ @return The bit field read.
+
+**/
+UINT64
+EFIAPI
+BitFieldRead64 (
+ IN UINT64 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit
+ );
+
+
+/**
+ Writes a bit field to a 64-bit value, and returns the result.
+
+ Writes Value to the bit field specified by the StartBit and the EndBit in
+ Operand. All other bits in Operand are preserved. The new 64-bit value is
+ returned.
+
+ If 64-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 63, then ASSERT().
+ If EndBit is greater than 63, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param Value New value of the bit field.
+
+ @return The new 64-bit value.
+
+**/
+UINT64
+EFIAPI
+BitFieldWrite64 (
+ IN UINT64 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads a bit field from a 64-bit value, performs a bitwise OR, and returns the
+ result.
+
+ Performs a bitwise inclusive OR between the bit field specified by StartBit
+ and EndBit in Operand and the value specified by OrData. All other bits in
+ Operand are preserved. The new 64-bit value is returned.
+
+ If 64-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 63, then ASSERT().
+ If EndBit is greater than 63, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param OrData The value to OR with the read value from the value
+
+ @return The new 64-bit value.
+
+**/
+UINT64
+EFIAPI
+BitFieldOr64 (
+ IN UINT64 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 OrData
+ );
+
+
+/**
+ Reads a bit field from a 64-bit value, performs a bitwise AND, and returns
+ the result.
+
+ Performs a bitwise AND between the bit field specified by StartBit and EndBit
+ in Operand and the value specified by AndData. All other bits in Operand are
+ preserved. The new 64-bit value is returned.
+
+ If 64-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 63, then ASSERT().
+ If EndBit is greater than 63, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param AndData The value to AND with the read value from the value
+
+ @return The new 64-bit value.
+
+**/
+UINT64
+EFIAPI
+BitFieldAnd64 (
+ IN UINT64 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 AndData
+ );
+
+
+/**
+ Reads a bit field from a 64-bit value, performs a bitwise AND followed by a
+ bitwise OR, and returns the result.
+
+ Performs a bitwise AND between the bit field specified by StartBit and EndBit
+ in Operand and the value specified by AndData, followed by a bitwise
+ inclusive OR with value specified by OrData. All other bits in Operand are
+ preserved. The new 64-bit value is returned.
+
+ If 64-bit operations are not supported, then ASSERT().
+ If StartBit is greater than 63, then ASSERT().
+ If EndBit is greater than 63, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Operand Operand on which to perform the bitfield operation.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param AndData The value to AND with the read value from the value.
+ @param OrData The value to OR with the result of the AND operation.
+
+ @return The new 64-bit value.
+
+**/
+UINT64
+EFIAPI
+BitFieldAndThenOr64 (
+ IN UINT64 Operand,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 AndData,
+ IN UINT64 OrData
+ );
+
+
+//
+// Base Library Synchronization Functions
+//
+
+/**
+ Retrieves the architecture specific spin lock alignment requirements for
+ optimal spin lock performance.
+
+ This function retrieves the spin lock alignment requirements for optimal
+ performance on a given CPU architecture. The spin lock alignment must be a
+ power of two and is returned by this function. If there are no alignment
+ requirements, then 1 must be returned. The spin lock synchronization
+ functions must function correctly if the spin lock size and alignment values
+ returned by this function are not used at all. These values are hints to the
+ consumers of the spin lock synchronization functions to obtain optimal spin
+ lock performance.
+
+ @return The architecture specific spin lock alignment.
+
+**/
+UINTN
+EFIAPI
+GetSpinLockProperties (
+ VOID
+ );
+
+
+/**
+ Initializes a spin lock to the released state and returns the spin lock.
+
+ This function initializes the spin lock specified by SpinLock to the released
+ state, and returns SpinLock. Optimal performance can be achieved by calling
+ GetSpinLockProperties() to determine the size and alignment requirements for
+ SpinLock.
+
+ If SpinLock is NULL, then ASSERT().
+
+ @param SpinLock A pointer to the spin lock to initialize to the released
+ state.
+
+ @return SpinLock
+
+**/
+SPIN_LOCK *
+EFIAPI
+InitializeSpinLock (
+ IN SPIN_LOCK *SpinLock
+ );
+
+
+/**
+ Waits until a spin lock can be placed in the acquired state.
+
+ This function checks the state of the spin lock specified by SpinLock. If
+ SpinLock is in the released state, then this function places SpinLock in the
+ acquired state and returns SpinLock. Otherwise, this function waits
+ indefinitely for the spin lock to be released, and then places it in the
+ acquired state and returns SpinLock. All state transitions of SpinLock must
+ be performed using MP safe mechanisms.
+
+ If SpinLock is NULL, then ASSERT().
+ If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
+ If PcdSpinLockTimeout is not zero, and SpinLock is can not be acquired in
+ PcdSpinLockTimeout microseconds, then ASSERT().
+
+ @param SpinLock A pointer to the spin lock to place in the acquired state.
+
+ @return SpinLock
+
+**/
+SPIN_LOCK *
+EFIAPI
+AcquireSpinLock (
+ IN SPIN_LOCK *SpinLock
+ );
+
+
+/**
+ Attempts to place a spin lock in the acquired state.
+
+ This function checks the state of the spin lock specified by SpinLock. If
+ SpinLock is in the released state, then this function places SpinLock in the
+ acquired state and returns TRUE. Otherwise, FALSE is returned. All state
+ transitions of SpinLock must be performed using MP safe mechanisms.
+
+ If SpinLock is NULL, then ASSERT().
+ If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
+
+ @param SpinLock A pointer to the spin lock to place in the acquired state.
+
+ @retval TRUE SpinLock was placed in the acquired state.
+ @retval FALSE SpinLock could not be acquired.
+
+**/
+BOOLEAN
+EFIAPI
+AcquireSpinLockOrFail (
+ IN SPIN_LOCK *SpinLock
+ );
+
+
+/**
+ Releases a spin lock.
+
+ This function places the spin lock specified by SpinLock in the release state
+ and returns SpinLock.
+
+ If SpinLock is NULL, then ASSERT().
+ If SpinLock was not initialized with InitializeSpinLock(), then ASSERT().
+
+ @param SpinLock A pointer to the spin lock to release.
+
+ @return SpinLock
+
+**/
+SPIN_LOCK *
+EFIAPI
+ReleaseSpinLock (
+ IN SPIN_LOCK *SpinLock
+ );
+
+
+/**
+ Performs an atomic increment of an 32-bit unsigned integer.
+
+ Performs an atomic increment of the 32-bit unsigned integer specified by
+ Value and returns the incremented value. The increment operation must be
+ performed using MP safe mechanisms. The state of the return value is not
+ guaranteed to be MP safe.
+
+ If Value is NULL, then ASSERT().
+
+ @param Value A pointer to the 32-bit value to increment.
+
+ @return The incremented value.
+
+**/
+UINT32
+EFIAPI
+InterlockedIncrement (
+ IN UINT32 *Value
+ );
+
+
+/**
+ Performs an atomic decrement of an 32-bit unsigned integer.
+
+ Performs an atomic decrement of the 32-bit unsigned integer specified by
+ Value and returns the decremented value. The decrement operation must be
+ performed using MP safe mechanisms. The state of the return value is not
+ guaranteed to be MP safe.
+
+ If Value is NULL, then ASSERT().
+
+ @param Value A pointer to the 32-bit value to decrement.
+
+ @return The decremented value.
+
+**/
+UINT32
+EFIAPI
+InterlockedDecrement (
+ IN UINT32 *Value
+ );
+
+
+/**
+ Performs an atomic compare exchange operation on a 32-bit unsigned integer.
+
+ Performs an atomic compare exchange operation on the 32-bit unsigned integer
+ specified by Value. If Value is equal to CompareValue, then Value is set to
+ ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue,
+ then Value is returned. The compare exchange operation must be performed using
+ MP safe mechanisms.
+
+ If Value is NULL, then ASSERT().
+
+ @param Value A pointer to the 32-bit value for the compare exchange
+ operation.
+ @param CompareValue 32-bit value used in compare operation.
+ @param ExchangeValue 32-bit value used in exchange operation.
+
+ @return The original *Value before exchange.
+
+**/
+UINT32
+EFIAPI
+InterlockedCompareExchange32 (
+ IN OUT UINT32 *Value,
+ IN UINT32 CompareValue,
+ IN UINT32 ExchangeValue
+ );
+
+
+/**
+ Performs an atomic compare exchange operation on a 64-bit unsigned integer.
+
+ Performs an atomic compare exchange operation on the 64-bit unsigned integer specified
+ by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and
+ CompareValue is returned. If Value is not equal to CompareValue, then Value is returned.
+ The compare exchange operation must be performed using MP safe mechanisms.
+
+ If Value is NULL, then ASSERT().
+
+ @param Value A pointer to the 64-bit value for the compare exchange
+ operation.
+ @param CompareValue 64-bit value used in compare operation.
+ @param ExchangeValue 64-bit value used in exchange operation.
+
+ @return The original *Value before exchange.
+
+**/
+UINT64
+EFIAPI
+InterlockedCompareExchange64 (
+ IN OUT UINT64 *Value,
+ IN UINT64 CompareValue,
+ IN UINT64 ExchangeValue
+ );
+
+
+/**
+ Performs an atomic compare exchange operation on a pointer value.
+
+ Performs an atomic compare exchange operation on the pointer value specified
+ by Value. If Value is equal to CompareValue, then Value is set to
+ ExchangeValue and CompareValue is returned. If Value is not equal to
+ CompareValue, then Value is returned. The compare exchange operation must be
+ performed using MP safe mechanisms.
+
+ If Value is NULL, then ASSERT().
+
+ @param Value A pointer to the pointer value for the compare exchange
+ operation.
+ @param CompareValue Pointer value used in compare operation.
+ @param ExchangeValue Pointer value used in exchange operation.
+
+**/
+VOID *
+EFIAPI
+InterlockedCompareExchangePointer (
+ IN OUT VOID **Value,
+ IN VOID *CompareValue,
+ IN VOID *ExchangeValue
+ );
+
+
+//
+// Base Library Checksum Functions
+//
+
+/**
+ Calculate the sum of all elements in a buffer in unit of UINT8.
+ During calculation, the carry bits are dropped.
+
+ This function calculates the sum of all elements in a buffer
+ in unit of UINT8. The carry bits in result of addition are dropped.
+ The result is returned as UINT8. If Length is Zero, then Zero is
+ returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer Pointer to the buffer to carry out the sum operation.
+ @param Length The size, in bytes, of Buffer .
+
+ @return Sum The sum of Buffer with carry bits dropped during additions.
+
+**/
+UINT8
+EFIAPI
+CalculateSum8 (
+ IN CONST UINT8 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the two's complement checksum of all elements in a buffer
+ of 8-bit values.
+
+ This function first calculates the sum of the 8-bit values in the
+ buffer specified by Buffer and Length. The carry bits in the result
+ of addition are dropped. Then, the two's complement of the sum is
+ returned. If Length is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+
+ @param Buffer Pointer to the buffer to carry out the checksum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Checksum The 2's complement checksum of Buffer.
+
+**/
+UINT8
+EFIAPI
+CalculateCheckSum8 (
+ IN CONST UINT8 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the sum of all elements in a buffer of 16-bit values. During
+ calculation, the carry bits are dropped.
+
+ This function calculates the sum of the 16-bit values in the buffer
+ specified by Buffer and Length. The carry bits in result of addition are dropped.
+ The 16-bit result is returned. If Length is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 16-bit boundary, then ASSERT().
+ If Length is not aligned on a 16-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer Pointer to the buffer to carry out the sum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Sum The sum of Buffer with carry bits dropped during additions.
+
+**/
+UINT16
+EFIAPI
+CalculateSum16 (
+ IN CONST UINT16 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the two's complement checksum of all elements in a buffer of
+ 16-bit values.
+
+ This function first calculates the sum of the 16-bit values in the buffer
+ specified by Buffer and Length. The carry bits in the result of addition
+ are dropped. Then, the two's complement of the sum is returned. If Length
+ is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 16-bit boundary, then ASSERT().
+ If Length is not aligned on a 16-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer Pointer to the buffer to carry out the checksum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Checksum The 2's complement checksum of Buffer.
+
+**/
+UINT16
+EFIAPI
+CalculateCheckSum16 (
+ IN CONST UINT16 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the sum of all elements in a buffer of 32-bit values. During
+ calculation, the carry bits are dropped.
+
+ This function calculates the sum of the 32-bit values in the buffer
+ specified by Buffer and Length. The carry bits in result of addition are dropped.
+ The 32-bit result is returned. If Length is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 32-bit boundary, then ASSERT().
+ If Length is not aligned on a 32-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer Pointer to the buffer to carry out the sum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Sum The sum of Buffer with carry bits dropped during additions.
+
+**/
+UINT32
+EFIAPI
+CalculateSum32 (
+ IN CONST UINT32 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the two's complement checksum of all elements in a buffer of
+ 32-bit values.
+
+ This function first calculates the sum of the 32-bit values in the buffer
+ specified by Buffer and Length. The carry bits in the result of addition
+ are dropped. Then, the two's complement of the sum is returned. If Length
+ is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 32-bit boundary, then ASSERT().
+ If Length is not aligned on a 32-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer Pointer to the buffer to carry out the checksum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Checksum The 2's complement checksum of Buffer.
+
+**/
+UINT32
+EFIAPI
+CalculateCheckSum32 (
+ IN CONST UINT32 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the sum of all elements in a buffer of 64-bit values. During
+ calculation, the carry bits are dropped.
+
+ This function calculates the sum of the 64-bit values in the buffer
+ specified by Buffer and Length. The carry bits in result of addition are dropped.
+ The 64-bit result is returned. If Length is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 64-bit boundary, then ASSERT().
+ If Length is not aligned on a 64-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer Pointer to the buffer to carry out the sum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Sum The sum of Buffer with carry bits dropped during additions.
+
+**/
+UINT64
+EFIAPI
+CalculateSum64 (
+ IN CONST UINT64 *Buffer,
+ IN UINTN Length
+ );
+
+
+/**
+ Returns the two's complement checksum of all elements in a buffer of
+ 64-bit values.
+
+ This function first calculates the sum of the 64-bit values in the buffer
+ specified by Buffer and Length. The carry bits in the result of addition
+ are dropped. Then, the two's complement of the sum is returned. If Length
+ is 0, then 0 is returned.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 64-bit boundary, then ASSERT().
+ If Length is not aligned on a 64-bit boundary, then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+ @param Buffer Pointer to the buffer to carry out the checksum operation.
+ @param Length The size, in bytes, of Buffer.
+
+ @return Checksum The 2's complement checksum of Buffer.
+
+**/
+UINT64
+EFIAPI
+CalculateCheckSum64 (
+ IN CONST UINT64 *Buffer,
+ IN UINTN Length
+ );
+
+
+//
+// Base Library CPU Functions
+//
+typedef
+VOID
+(EFIAPI *SWITCH_STACK_ENTRY_POINT) (
+ IN VOID *Context1, OPTIONAL
+ IN VOID *Context2 OPTIONAL
+ );
+
+
+/**
+ Used to serialize load and store operations.
+
+ All loads and stores that proceed calls to this function are guaranteed to be
+ globally visible when this function returns.
+
+**/
+VOID
+EFIAPI
+MemoryFence (
+ VOID
+ );
+
+
+/**
+ Saves the current CPU context that can be restored with a call to LongJump()
+ and returns 0.
+
+ Saves the current CPU context in the buffer specified by JumpBuffer and
+ returns 0. The initial call to SetJump() must always return 0. Subsequent
+ calls to LongJump() cause a non-zero value to be returned by SetJump().
+
+ If JumpBuffer is NULL, then ASSERT().
+ For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
+
+ @param JumpBuffer A pointer to CPU context buffer.
+
+ @retval 0 Indicates a return from SetJump().
+
+**/
+UINTN
+EFIAPI
+SetJump (
+ OUT BASE_LIBRARY_JUMP_BUFFER *JumpBuffer
+ );
+
+
+/**
+ Restores the CPU context that was saved with SetJump().
+
+ Restores the CPU context from the buffer specified by JumpBuffer. This
+ function never returns to the caller. Instead is resumes execution based on
+ the state of JumpBuffer.
+
+ If JumpBuffer is NULL, then ASSERT().
+ For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
+ If Value is 0, then ASSERT().
+
+ @param JumpBuffer A pointer to CPU context buffer.
+ @param Value The value to return when the SetJump() context is
+ restored and must be non-zero.
+
+**/
+VOID
+EFIAPI
+LongJump (
+ IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer,
+ IN UINTN Value
+ );
+
+
+/**
+ Enables CPU interrupts.
+
+ Enables CPU interrupts.
+
+**/
+VOID
+EFIAPI
+EnableInterrupts (
+ VOID
+ );
+
+
+/**
+ Disables CPU interrupts.
+
+ Disables CPU interrupts.
+
+**/
+VOID
+EFIAPI
+DisableInterrupts (
+ VOID
+ );
+
+
+/**
+ Disables CPU interrupts and returns the interrupt state prior to the disable
+ operation.
+
+ Disables CPU interrupts and returns the interrupt state prior to the disable
+ operation.
+
+ @retval TRUE CPU interrupts were enabled on entry to this call.
+ @retval FALSE CPU interrupts were disabled on entry to this call.
+
+**/
+BOOLEAN
+EFIAPI
+SaveAndDisableInterrupts (
+ VOID
+ );
+
+
+/**
+ Enables CPU interrupts for the smallest window required to capture any
+ pending interrupts.
+
+ Enables CPU interrupts for the smallest window required to capture any
+ pending interrupts.
+
+**/
+VOID
+EFIAPI
+EnableDisableInterrupts (
+ VOID
+ );
+
+
+/**
+ Retrieves the current CPU interrupt state.
+
+ Retrieves the current CPU interrupt state. Returns TRUE is interrupts are
+ currently enabled. Otherwise returns FALSE.
+
+ @retval TRUE CPU interrupts are enabled.
+ @retval FALSE CPU interrupts are disabled.
+
+**/
+BOOLEAN
+EFIAPI
+GetInterruptState (
+ VOID
+ );
+
+
+/**
+ Set the current CPU interrupt state.
+
+ Sets the current CPU interrupt state to the state specified by
+ InterruptState. If InterruptState is TRUE, then interrupts are enabled. If
+ InterruptState is FALSE, then interrupts are disabled. InterruptState is
+ returned.
+
+ @param InterruptState TRUE if interrupts should enabled. FALSE if
+ interrupts should be disabled.
+
+ @return InterruptState
+
+**/
+BOOLEAN
+EFIAPI
+SetInterruptState (
+ IN BOOLEAN InterruptState
+ );
+
+
+/**
+ Requests CPU to pause for a short period of time.
+
+ Requests CPU to pause for a short period of time. Typically used in MP
+ systems to prevent memory starvation while waiting for a spin lock.
+
+**/
+VOID
+EFIAPI
+CpuPause (
+ VOID
+ );
+
+
+/**
+ Transfers control to a function starting with a new stack.
+
+ Transfers control to the function specified by EntryPoint using the
+ new stack specified by NewStack and passing in the parameters specified
+ by Context1 and Context2. Context1 and Context2 are optional and may
+ be NULL. The function EntryPoint must never return. This function
+ supports a variable number of arguments following the NewStack parameter.
+ These additional arguments are ignored on IA-32, x64, and EBC.
+ IPF CPUs expect one additional parameter of type VOID * that specifies
+ the new backing store pointer.
+
+ If EntryPoint is NULL, then ASSERT().
+ If NewStack is NULL, then ASSERT().
+
+ @param EntryPoint A pointer to function to call with the new stack.
+ @param Context1 A pointer to the context to pass into the EntryPoint
+ function.
+ @param Context2 A pointer to the context to pass into the EntryPoint
+ function.
+ @param NewStack A pointer to the new stack to use for the EntryPoint
+ function.
+
+**/
+VOID
+EFIAPI
+SwitchStack (
+ IN SWITCH_STACK_ENTRY_POINT EntryPoint,
+ IN VOID *Context1, OPTIONAL
+ IN VOID *Context2, OPTIONAL
+ IN VOID *NewStack,
+ ...
+ );
+
+
+/**
+ Generates a breakpoint on the CPU.
+
+ Generates a breakpoint on the CPU. The breakpoint must be implemented such
+ that code can resume normal execution after the breakpoint.
+
+**/
+VOID
+EFIAPI
+CpuBreakpoint (
+ VOID
+ );
+
+
+/**
+ Executes an infinite loop.
+
+ Forces the CPU to execute an infinite loop. A debugger may be used to skip
+ past the loop and the code that follows the loop must execute properly. This
+ implies that the infinite loop must not cause the code that follow it to be
+ optimized away.
+
+**/
+VOID
+EFIAPI
+CpuDeadLoop (
+ VOID
+ );
+
+
+#if defined (MDE_CPU_IPF)
+
+/**
+ Flush a range of cache lines in the cache coherency domain of the calling
+ CPU.
+
+ Invalidates the cache lines specified by Address and Length. If Address is
+ not aligned on a cache line boundary, then entire cache line containing
+ Address is invalidated. If Address + Length is not aligned on a cache line
+ boundary, then the entire instruction cache line containing Address + Length
+ -1 is invalidated. This function may choose to invalidate the entire
+ instruction cache if that is more efficient than invalidating the specified
+ range. If Length is 0, the no instruction cache lines are invalidated.
+ Address is returned.
+
+ If Length is greater than (MAX_ADDRESS - Address + 1), then ASSERT().
+
+ @param Address The base address of the instruction lines to invalidate. If
+ the CPU is in a physical addressing mode, then Address is a
+ physical address. If the CPU is in a virtual addressing mode,
+ then Address is a virtual address.
+
+ @param Length The number of bytes to invalidate from the instruction cache.
+
+ @return Address
+
+**/
+VOID *
+EFIAPI
+IpfFlushCacheRange (
+ IN VOID *Address,
+ IN UINTN Length
+ );
+
+
+/**
+ Executes a FC instruction
+ Executes a FC instruction on the cache line specified by Address.
+ The cache line size affected is at least 32-bytes (aligned on a 32-byte boundary).
+ An implementation may flush a larger region. This function is only available on IPF.
+
+ @param Address The Address of cache line to be flushed.
+
+ @return The address of FC instruction executed.
+
+**/
+UINT64
+EFIAPI
+AsmFc (
+ IN UINT64 Address
+ );
+
+
+/**
+ Executes a FC.I instruction.
+ Executes a FC.I instruction on the cache line specified by Address.
+ The cache line size affected is at least 32-bytes (aligned on a 32-byte boundary).
+ An implementation may flush a larger region. This function is only available on IPF.
+
+ @param Address The Address of cache line to be flushed.
+
+ @return The address of FC.I instruction executed.
+
+**/
+UINT64
+EFIAPI
+AsmFci (
+ IN UINT64 Address
+ );
+
+
+/**
+ Reads the current value of a Processor Identifier Register (CPUID).
+ The Index of largest implemented CPUID (One less than the number of implemented CPUID
+ registers) is determined by CPUID [3] bits {7:0}.
+ No parameter checking is performed on Index. If the Index value is beyond the
+ implemented CPUID register range, a Reserved Register/Field fault may occur. The caller
+ must either guarantee that Index is valid, or the caller must set up fault handlers to
+ catch the faults. This function is only available on IPF.
+
+ @param Index The 8-bit Processor Identifier Register index to read.
+
+ @return The current value of Processor Identifier Register specified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadCpuid (
+ IN UINT8 Index
+ );
+
+
+/**
+ Reads the current value of 64-bit Processor Status Register (PSR).
+ This function is only available on IPF.
+
+ @return The current value of PSR.
+
+**/
+UINT64
+EFIAPI
+AsmReadPsr (
+ VOID
+ );
+
+
+/**
+ Writes the current value of 64-bit Processor Status Register (PSR).
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of PSR must be 0 or a Reserved Register/Field fault may occur. The caller must either guarantee that Value is valid, or the caller must set up fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to PSR.
+
+ @return The 64-bit value written to the PSR.
+
+**/
+UINT64
+EFIAPI
+AsmWritePsr (
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #0 (KR0).
+ This function is only available on IPF.
+
+ @return The current value of KR0.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr0 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #1 (KR1).
+ This function is only available on IPF.
+
+ @return The current value of KR1.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr1 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #2 (KR2).
+ This function is only available on IPF.
+
+ @return The current value of KR2.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr2 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #3 (KR3).
+ This function is only available on IPF.
+
+ @return The current value of KR3.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr3 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #4 (KR4).
+ This function is only available on IPF.
+
+ @return The current value of KR4.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr4 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #5 (KR5).
+ This function is only available on IPF.
+
+ @return The current value of KR5.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr5 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #6 (KR6).
+ This function is only available on IPF.
+
+ @return The current value of KR6.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr6 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit Kernel Register #7 (KR7).
+ This function is only available on IPF.
+
+ @return The current value of KR7.
+
+**/
+UINT64
+EFIAPI
+AsmReadKr7 (
+ VOID
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #0 (KR0).
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to KR0.
+
+ @return The 64-bit value written to the KR0.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr0 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #1 (KR1).
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to KR1.
+
+ @return The 64-bit value written to the KR1.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr1 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #2 (KR2).
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to KR2.
+
+ @return The 64-bit value written to the KR2.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr2 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #3 (KR3).
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to KR3.
+
+ @return The 64-bit value written to the KR3.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr3 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #4 (KR4).
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to KR4.
+
+ @return The 64-bit value written to the KR4.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr4 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #5 (KR5).
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to KR5.
+
+ @return The 64-bit value written to the KR5.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr5 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #6 (KR6).
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to KR6.
+
+ @return The 64-bit value written to the KR6.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr6 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Write the current value of 64-bit Kernel Register #7 (KR7).
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to KR7.
+
+ @return The 64-bit value written to the KR7.
+
+**/
+UINT64
+EFIAPI
+AsmWriteKr7 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of Interval Timer Counter Register (ITC).
+ This function is only available on IPF.
+
+ @return The current value of ITC.
+
+**/
+UINT64
+EFIAPI
+AsmReadItc (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Interval Timer Vector Register (ITV).
+ This function is only available on IPF.
+
+ @return The current value of ITV.
+
+**/
+UINT64
+EFIAPI
+AsmReadItv (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Interval Timer Match Register (ITM).
+ This function is only available on IPF.
+
+ @return The current value of ITM.
+**/
+UINT64
+EFIAPI
+AsmReadItm (
+ VOID
+ );
+
+
+/**
+ Writes the current value of 64-bit Interval Timer Counter Register (ITC).
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to ITC.
+
+ @return The 64-bit value written to the ITC.
+
+**/
+UINT64
+EFIAPI
+AsmWriteItc (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Interval Timer Match Register (ITM).
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to ITM.
+
+ @return The 64-bit value written to the ITM.
+
+**/
+UINT64
+EFIAPI
+AsmWriteItm (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Interval Timer Vector Register (ITV).
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of ITV must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to ITV.
+
+ @return The 64-bit value written to the ITV.
+
+**/
+UINT64
+EFIAPI
+AsmWriteItv (
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of Default Control Register (DCR).
+ This function is only available on IPF.
+
+ @return The current value of DCR.
+
+**/
+UINT64
+EFIAPI
+AsmReadDcr (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Interruption Vector Address Register (IVA).
+ This function is only available on IPF.
+
+ @return The current value of IVA.
+**/
+UINT64
+EFIAPI
+AsmReadIva (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Page Table Address Register (PTA).
+ This function is only available on IPF.
+
+ @return The current value of PTA.
+
+**/
+UINT64
+EFIAPI
+AsmReadPta (
+ VOID
+ );
+
+
+/**
+ Writes the current value of 64-bit Default Control Register (DCR).
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of DCR must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to DCR.
+
+ @return The 64-bit value written to the DCR.
+
+**/
+UINT64
+EFIAPI
+AsmWriteDcr (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Interruption Vector Address Register (IVA).
+ The size of vector table is 32 K bytes and is 32 K bytes aligned
+ the low 15 bits of Value is ignored when written.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to IVA.
+
+ @return The 64-bit value written to the IVA.
+
+**/
+UINT64
+EFIAPI
+AsmWriteIva (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Page Table Address Register (PTA).
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of DCR must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to PTA.
+
+ @return The 64-bit value written to the PTA.
+**/
+UINT64
+EFIAPI
+AsmWritePta (
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of Local Interrupt ID Register (LID).
+ This function is only available on IPF.
+
+ @return The current value of LID.
+
+**/
+UINT64
+EFIAPI
+AsmReadLid (
+ VOID
+ );
+
+
+/**
+ Reads the current value of External Interrupt Vector Register (IVR).
+ This function is only available on IPF.
+
+ @return The current value of IVR.
+
+**/
+UINT64
+EFIAPI
+AsmReadIvr (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Task Priority Register (TPR).
+ This function is only available on IPF.
+
+ @return The current value of TPR.
+
+**/
+UINT64
+EFIAPI
+AsmReadTpr (
+ VOID
+ );
+
+
+/**
+ Reads the current value of External Interrupt Request Register #0 (IRR0).
+ This function is only available on IPF.
+
+ @return The current value of IRR0.
+
+**/
+UINT64
+EFIAPI
+AsmReadIrr0 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of External Interrupt Request Register #1 (IRR1).
+ This function is only available on IPF.
+
+ @return The current value of IRR1.
+
+**/
+UINT64
+EFIAPI
+AsmReadIrr1 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of External Interrupt Request Register #2 (IRR2).
+ This function is only available on IPF.
+
+ @return The current value of IRR2.
+
+**/
+UINT64
+EFIAPI
+AsmReadIrr2 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of External Interrupt Request Register #3 (IRR3).
+ This function is only available on IPF.
+
+ @return The current value of IRR3.
+
+**/
+UINT64
+EFIAPI
+AsmReadIrr3 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Performance Monitor Vector Register (PMV).
+ This function is only available on IPF.
+
+ @return The current value of PMV.
+
+**/
+UINT64
+EFIAPI
+AsmReadPmv (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Corrected Machine Check Vector Register (CMCV).
+ This function is only available on IPF.
+
+ @return The current value of CMCV.
+
+**/
+UINT64
+EFIAPI
+AsmReadCmcv (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Local Redirection Register #0 (LRR0).
+ This function is only available on IPF.
+
+ @return The current value of LRR0.
+
+**/
+UINT64
+EFIAPI
+AsmReadLrr0 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Local Redirection Register #1 (LRR1).
+ This function is only available on IPF.
+
+ @return The current value of LRR1.
+
+**/
+UINT64
+EFIAPI
+AsmReadLrr1 (
+ VOID
+ );
+
+
+/**
+ Writes the current value of 64-bit Page Local Interrupt ID Register (LID).
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of LID must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to LID.
+
+ @return The 64-bit value written to the LID.
+
+**/
+UINT64
+EFIAPI
+AsmWriteLid (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Task Priority Register (TPR).
+ No parameter checking is performed on Value. All bits of Value corresponding to
+ reserved fields of TPR must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to TPR.
+
+ @return The 64-bit value written to the TPR.
+
+**/
+UINT64
+EFIAPI
+AsmWriteTpr (
+ IN UINT64 Value
+ );
+
+
+/**
+ Performs a write operation on End OF External Interrupt Register (EOI).
+ Writes a value of 0 to the EOI Register. This function is only available on IPF.
+
+**/
+VOID
+EFIAPI
+AsmWriteEoi (
+ VOID
+ );
+
+
+/**
+ Writes the current value of 64-bit Performance Monitor Vector Register (PMV).
+ No parameter checking is performed on Value. All bits of Value corresponding
+ to reserved fields of PMV must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to PMV.
+
+ @return The 64-bit value written to the PMV.
+
+**/
+UINT64
+EFIAPI
+AsmWritePmv (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Corrected Machine Check Vector Register (CMCV).
+ No parameter checking is performed on Value. All bits of Value corresponding
+ to reserved fields of CMCV must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to CMCV.
+
+ @return The 64-bit value written to the CMCV.
+
+**/
+UINT64
+EFIAPI
+AsmWriteCmcv (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Local Redirection Register #0 (LRR0).
+ No parameter checking is performed on Value. All bits of Value corresponding
+ to reserved fields of LRR0 must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to LRR0.
+
+ @return The 64-bit value written to the LRR0.
+
+**/
+UINT64
+EFIAPI
+AsmWriteLrr0 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Local Redirection Register #1 (LRR1).
+ No parameter checking is performed on Value. All bits of Value corresponding
+ to reserved fields of LRR1 must be 0 or a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Value is valid, or the caller must
+ set up fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to LRR1.
+
+ @return The 64-bit value written to the LRR1.
+
+**/
+UINT64
+EFIAPI
+AsmWriteLrr1 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of Instruction Breakpoint Register (IBR).
+
+ The Instruction Breakpoint Registers are used in pairs. The even numbered
+ registers contain breakpoint addresses, and the odd numbered registers contain
+ breakpoint mask conditions. At least 4 instruction registers pairs are implemented
+ on all processor models. Implemented registers are contiguous starting with
+ register 0. No parameter checking is performed on Index, and if the Index value
+ is beyond the implemented IBR register range, a Reserved Register/Field fault may
+ occur. The caller must either guarantee that Index is valid, or the caller must
+ set up fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Index The 8-bit Instruction Breakpoint Register index to read.
+
+ @return The current value of Instruction Breakpoint Register specified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadIbr (
+ IN UINT8 Index
+ );
+
+
+/**
+ Reads the current value of Data Breakpoint Register (DBR).
+
+ The Data Breakpoint Registers are used in pairs. The even numbered registers
+ contain breakpoint addresses, and odd numbered registers contain breakpoint
+ mask conditions. At least 4 data registers pairs are implemented on all processor
+ models. Implemented registers are contiguous starting with register 0.
+ No parameter checking is performed on Index. If the Index value is beyond
+ the implemented DBR register range, a Reserved Register/Field fault may occur.
+ The caller must either guarantee that Index is valid, or the caller must set up
+ fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Index The 8-bit Data Breakpoint Register index to read.
+
+ @return The current value of Data Breakpoint Register specified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadDbr (
+ IN UINT8 Index
+ );
+
+
+/**
+ Reads the current value of Performance Monitor Configuration Register (PMC).
+
+ All processor implementations provide at least 4 performance counters
+ (PMC/PMD [4]...PMC/PMD [7] pairs), and 4 performance monitor counter overflow
+ status registers (PMC [0]... PMC [3]). Processor implementations may provide
+ additional implementation-dependent PMC and PMD to increase the number of
+ 'generic' performance counters (PMC/PMD pairs). The remainder of PMC and PMD
+ register set is implementation dependent. No parameter checking is performed
+ on Index. If the Index value is beyond the implemented PMC register range,
+ zero value will be returned.
+ This function is only available on IPF.
+
+ @param Index The 8-bit Performance Monitor Configuration Register index to read.
+
+ @return The current value of Performance Monitor Configuration Register
+ specified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadPmc (
+ IN UINT8 Index
+ );
+
+
+/**
+ Reads the current value of Performance Monitor Data Register (PMD).
+
+ All processor implementations provide at least 4 performance counters
+ (PMC/PMD [4]...PMC/PMD [7] pairs), and 4 performance monitor counter
+ overflow status registers (PMC [0]... PMC [3]). Processor implementations may
+ provide additional implementation-dependent PMC and PMD to increase the number
+ of 'generic' performance counters (PMC/PMD pairs). The remainder of PMC and PMD
+ register set is implementation dependent. No parameter checking is performed
+ on Index. If the Index value is beyond the implemented PMD register range,
+ zero value will be returned.
+ This function is only available on IPF.
+
+ @param Index The 8-bit Performance Monitor Data Register index to read.
+
+ @return The current value of Performance Monitor Data Register specified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadPmd (
+ IN UINT8 Index
+ );
+
+
+/**
+ Writes the current value of 64-bit Instruction Breakpoint Register (IBR).
+
+ Writes current value of Instruction Breakpoint Register specified by Index.
+ The Instruction Breakpoint Registers are used in pairs. The even numbered
+ registers contain breakpoint addresses, and odd numbered registers contain
+ breakpoint mask conditions. At least 4 instruction registers pairs are implemented
+ on all processor models. Implemented registers are contiguous starting with
+ register 0. No parameter checking is performed on Index. If the Index value
+ is beyond the implemented IBR register range, a Reserved Register/Field fault may
+ occur. The caller must either guarantee that Index is valid, or the caller must
+ set up fault handlers to catch the faults.
+ This function is only available on IPF.
+
+ @param Index The 8-bit Instruction Breakpoint Register index to write.
+ @param Value The 64-bit value to write to IBR.
+
+ @return The 64-bit value written to the IBR.
+
+**/
+UINT64
+EFIAPI
+AsmWriteIbr (
+ IN UINT8 Index,
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Data Breakpoint Register (DBR).
+
+ Writes current value of Data Breakpoint Register specified by Index.
+ The Data Breakpoint Registers are used in pairs. The even numbered registers
+ contain breakpoint addresses, and odd numbered registers contain breakpoint
+ mask conditions. At least 4 data registers pairs are implemented on all processor
+ models. Implemented registers are contiguous starting with register 0. No parameter
+ checking is performed on Index. If the Index value is beyond the implemented
+ DBR register range, a Reserved Register/Field fault may occur. The caller must
+ either guarantee that Index is valid, or the caller must set up fault handlers to
+ catch the faults.
+ This function is only available on IPF.
+
+ @param Index The 8-bit Data Breakpoint Register index to write.
+ @param Value The 64-bit value to write to DBR.
+
+ @return The 64-bit value written to the DBR.
+
+**/
+UINT64
+EFIAPI
+AsmWriteDbr (
+ IN UINT8 Index,
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Performance Monitor Configuration Register (PMC).
+
+ Writes current value of Performance Monitor Configuration Register specified by Index.
+ All processor implementations provide at least 4 performance counters
+ (PMC/PMD [4]...PMC/PMD [7] pairs), and 4 performance monitor counter overflow status
+ registers (PMC [0]... PMC [3]). Processor implementations may provide additional
+ implementation-dependent PMC and PMD to increase the number of 'generic' performance
+ counters (PMC/PMD pairs). The remainder of PMC and PMD register set is implementation
+ dependent. No parameter checking is performed on Index. If the Index value is
+ beyond the implemented PMC register range, the write is ignored.
+ This function is only available on IPF.
+
+ @param Index The 8-bit Performance Monitor Configuration Register index to write.
+ @param Value The 64-bit value to write to PMC.
+
+ @return The 64-bit value written to the PMC.
+
+**/
+UINT64
+EFIAPI
+AsmWritePmc (
+ IN UINT8 Index,
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit Performance Monitor Data Register (PMD).
+
+ Writes current value of Performance Monitor Data Register specified by Index.
+ All processor implementations provide at least 4 performance counters
+ (PMC/PMD [4]...PMC/PMD [7] pairs), and 4 performance monitor counter overflow
+ status registers (PMC [0]... PMC [3]). Processor implementations may provide
+ additional implementation-dependent PMC and PMD to increase the number of 'generic'
+ performance counters (PMC/PMD pairs). The remainder of PMC and PMD register set
+ is implementation dependent. No parameter checking is performed on Index. If the
+ Index value is beyond the implemented PMD register range, the write is ignored.
+ This function is only available on IPF.
+
+ @param Index The 8-bit Performance Monitor Data Register index to write.
+ @param Value The 64-bit value to write to PMD.
+
+ @return The 64-bit value written to the PMD.
+
+**/
+UINT64
+EFIAPI
+AsmWritePmd (
+ IN UINT8 Index,
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of 64-bit Global Pointer (GP).
+
+ Reads and returns the current value of GP.
+ This function is only available on IPF.
+
+ @return The current value of GP.
+
+**/
+UINT64
+EFIAPI
+AsmReadGp (
+ VOID
+ );
+
+
+/**
+ Write the current value of 64-bit Global Pointer (GP).
+
+ Writes the current value of GP. The 64-bit value written to the GP is returned.
+ No parameter checking is performed on Value.
+ This function is only available on IPF.
+
+ @param Value The 64-bit value to write to GP.
+
+ @return The 64-bit value written to the GP.
+
+**/
+UINT64
+EFIAPI
+AsmWriteGp (
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of 64-bit Stack Pointer (SP).
+
+ Reads and returns the current value of SP.
+ This function is only available on IPF.
+
+ @return The current value of SP.
+
+**/
+UINT64
+EFIAPI
+AsmReadSp (
+ VOID
+ );
+
+
+/**
+ Determines if the CPU is currently executing in virtual, physical, or mixed mode.
+
+ Determines the current execution mode of the CPU.
+ If the CPU is in virtual mode(PSR.RT=1, PSR.DT=1, PSR.IT=1), then 1 is returned.
+ If the CPU is in physical mode(PSR.RT=0, PSR.DT=0, PSR.IT=0), then 0 is returned.
+ If the CPU is not in physical mode or virtual mode, then it is in mixed mode,
+ and -1 is returned.
+ This function is only available on IPF.
+
+ @return 1 The CPU is in virtual mode.
+ @return 0 The CPU is in physical mode.
+ @return -1 The CPU is in mixed mode.
+
+**/
+INT64
+EFIAPI
+AsmCpuVirtual (
+ VOID
+ );
+
+
+/**
+ Makes a PAL procedure call.
+
+ This is a wrapper function to make a PAL procedure call. Based on the Index
+ value this API will make static or stacked PAL call. The following table
+ describes the usage of PAL Procedure Index Assignment. Architected procedures
+ may be designated as required or optional. If a PAL procedure is specified
+ as optional, a unique return code of 0xFFFFFFFFFFFFFFFF is returned in the
+ Status field of the PAL_CALL_RETURN structure.
+ This indicates that the procedure is not present in this PAL implementation.
+ It is the caller's responsibility to check for this return code after calling
+ any optional PAL procedure.
+ No parameter checking is performed on the 5 input parameters, but there are
+ some common rules that the caller should follow when making a PAL call. Any
+ address passed to PAL as buffers for return parameters must be 8-byte aligned.
+ Unaligned addresses may cause undefined results. For those parameters defined
+ as reserved or some fields defined as reserved must be zero filled or the invalid
+ argument return value may be returned or undefined result may occur during the
+ execution of the procedure. If the PalEntryPoint does not point to a valid
+ PAL entry point then the system behavior is undefined. This function is only
+ available on IPF.
+
+ @param PalEntryPoint The PAL procedure calls entry point.
+ @param Index The PAL procedure Index number.
+ @param Arg2 The 2nd parameter for PAL procedure calls.
+ @param Arg3 The 3rd parameter for PAL procedure calls.
+ @param Arg4 The 4th parameter for PAL procedure calls.
+
+ @return structure returned from the PAL Call procedure, including the status and return value.
+
+**/
+PAL_CALL_RETURN
+EFIAPI
+AsmPalCall (
+ IN UINT64 PalEntryPoint,
+ IN UINT64 Index,
+ IN UINT64 Arg2,
+ IN UINT64 Arg3,
+ IN UINT64 Arg4
+ );
+
+
+/**
+ Transfers control to a function starting with a new stack.
+
+ Transfers control to the function specified by EntryPoint using the new stack
+ specified by NewStack and passing in the parameters specified by Context1 and
+ Context2. Context1 and Context2 are optional and may be NULL. The function
+ EntryPoint must never return.
+
+ If EntryPoint is NULL, then ASSERT().
+ If NewStack is NULL, then ASSERT().
+
+ @param EntryPoint A pointer to function to call with the new stack.
+ @param Context1 A pointer to the context to pass into the EntryPoint
+ function.
+ @param Context2 A pointer to the context to pass into the EntryPoint
+ function.
+ @param NewStack A pointer to the new stack to use for the EntryPoint
+ function.
+ @param NewBsp A pointer to the new memory location for RSE backing
+ store.
+
+**/
+VOID
+EFIAPI
+AsmSwitchStackAndBackingStore (
+ IN SWITCH_STACK_ENTRY_POINT EntryPoint,
+ IN VOID *Context1, OPTIONAL
+ IN VOID *Context2, OPTIONAL
+ IN VOID *NewStack,
+ IN VOID *NewBsp
+ );
+
+
+//
+// Bugbug: This call should be removed after
+// the PalCall Instance issue has been fixed.
+//
+/**
+ Performs a PAL call using static calling convention.
+
+ An internal function to perform a PAL call using static calling convention.
+
+ @param PalEntryPoint The entry point address of PAL. The address in ar.kr5
+ would be used if this parameter were NULL on input.
+ @param Arg1 The first argument of a PAL call.
+ @param Arg1 The second argument of a PAL call.
+ @param Arg1 The third argument of a PAL call.
+ @param Arg1 The fourth argument of a PAL call.
+
+ @return The values returned in r8, r9, r10 and r11.
+
+**/
+PAL_CALL_RETURN
+PalCallStatic (
+ IN CONST VOID *PalEntryPoint,
+ IN UINT64 Arg1,
+ IN UINT64 Arg2,
+ IN UINT64 Arg3,
+ IN UINT64 Arg4
+ );
+
+
+#elif defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
+//
+// IA32 and X64 Specific Functions
+//
+//
+// Byte packed structure for 16-bit Real Mode EFLAGS
+//
+typedef union {
+ struct {
+ UINT32 CF:1; // Carry Flag
+ UINT32 Reserved_0:1; // Reserved
+ UINT32 PF:1; // Parity Flag
+ UINT32 Reserved_1:1; // Reserved
+ UINT32 AF:1; // Auxiliary Carry Flag
+ UINT32 Reserved_2:1; // Reserved
+ UINT32 ZF:1; // Zero Flag
+ UINT32 SF:1; // Sign Flag
+ UINT32 TF:1; // Trap Flag
+ UINT32 IF:1; // Interrupt Enable Flag
+ UINT32 DF:1; // Direction Flag
+ UINT32 OF:1; // Overflow Flag
+ UINT32 IOPL:2; // I/O Privilege Level
+ UINT32 NT:1; // Nested Task
+ UINT32 Reserved_3:1; // Reserved
+ } Bits;
+ UINT16 Uint16;
+} IA32_FLAGS16;
+
+//
+// Byte packed structure for EFLAGS/RFLAGS
+// 32-bits on IA-32
+// 64-bits on X64. The upper 32-bits on X64 are reserved
+//
+typedef union {
+ struct {
+ UINT32 CF:1; // Carry Flag
+ UINT32 Reserved_0:1; // Reserved
+ UINT32 PF:1; // Parity Flag
+ UINT32 Reserved_1:1; // Reserved
+ UINT32 AF:1; // Auxiliary Carry Flag
+ UINT32 Reserved_2:1; // Reserved
+ UINT32 ZF:1; // Zero Flag
+ UINT32 SF:1; // Sign Flag
+ UINT32 TF:1; // Trap Flag
+ UINT32 IF:1; // Interrupt Enable Flag
+ UINT32 DF:1; // Direction Flag
+ UINT32 OF:1; // Overflow Flag
+ UINT32 IOPL:2; // I/O Privilege Level
+ UINT32 NT:1; // Nested Task
+ UINT32 Reserved_3:1; // Reserved
+ UINT32 RF:1; // Resume Flag
+ UINT32 VM:1; // Virtual 8086 Mode
+ UINT32 AC:1; // Alignment Check
+ UINT32 VIF:1; // Virtual Interrupt Flag
+ UINT32 VIP:1; // Virtual Interrupt Pending
+ UINT32 ID:1; // ID Flag
+ UINT32 Reserved_4:10; // Reserved
+ } Bits;
+ UINTN UintN;
+} IA32_EFLAGS32;
+
+//
+// Byte packed structure for Control Register 0 (CR0)
+// 32-bits on IA-32
+// 64-bits on X64. The upper 32-bits on X64 are reserved
+//
+typedef union {
+ struct {
+ UINT32 PE:1; // Protection Enable
+ UINT32 MP:1; // Monitor Coprocessor
+ UINT32 EM:1; // Emulation
+ UINT32 TS:1; // Task Switched
+ UINT32 ET:1; // Extension Type
+ UINT32 NE:1; // Numeric Error
+ UINT32 Reserved_0:10; // Reserved
+ UINT32 WP:1; // Write Protect
+ UINT32 Reserved_1:1; // Reserved
+ UINT32 AM:1; // Alignment Mask
+ UINT32 Reserved_2:10; // Reserved
+ UINT32 NW:1; // Mot Write-through
+ UINT32 CD:1; // Cache Disable
+ UINT32 PG:1; // Paging
+ } Bits;
+ UINTN UintN;
+} IA32_CR0;
+
+//
+// Byte packed structure for Control Register 4 (CR4)
+// 32-bits on IA-32
+// 64-bits on X64. The upper 32-bits on X64 are reserved
+//
+typedef union {
+ struct {
+ UINT32 VME:1; // Virtual-8086 Mode Extensions
+ UINT32 PVI:1; // Protected-Mode Virtual Interrupts
+ UINT32 TSD:1; // Time Stamp Disable
+ UINT32 DE:1; // Debugging Extensions
+ UINT32 PSE:1; // Page Size Extensions
+ UINT32 PAE:1; // Physical Address Extension
+ UINT32 MCE:1; // Machine Check Enable
+ UINT32 PGE:1; // Page Global Enable
+ UINT32 PCE:1; // Performance Monitoring Counter
+ // Enable
+ UINT32 OSFXSR:1; // Operating System Support for
+ // FXSAVE and FXRSTOR instructions
+ UINT32 OSXMMEXCPT:1; // Operating System Support for
+ // Unmasked SIMD Floating Point
+ // Exceptions
+ UINT32 Reserved_0:2; // Reserved
+ UINT32 VMXE:1; // VMX Enable
+ UINT32 Reserved_1:18; // Reseved
+ } Bits;
+ UINTN UintN;
+} IA32_CR4;
+
+//
+// Byte packed structure for an IDTR, GDTR, LDTR descriptor
+/// @bug How to make this structure byte-packed in a compiler independent way?
+//
+#pragma pack (1)
+typedef struct {
+ UINT16 Limit;
+ UINTN Base;
+} IA32_DESCRIPTOR;
+#pragma pack ()
+
+#define IA32_IDT_GATE_TYPE_TASK 0x85
+#define IA32_IDT_GATE_TYPE_INTERRUPT_16 0x86
+#define IA32_IDT_GATE_TYPE_TRAP_16 0x87
+#define IA32_IDT_GATE_TYPE_INTERRUPT_32 0x8E
+#define IA32_IDT_GATE_TYPE_TRAP_32 0x8F
+
+//
+// Byte packed structure for an Interrupt Gate Descriptor
+//
+typedef union {
+ struct {
+ UINT32 OffsetLow:16; // Offset bits 15..0
+ UINT32 Selector:16; // Selector
+ UINT32 Reserved_0:8; // Reserved
+ UINT32 GateType:8; // Gate Type. See #defines above
+ UINT32 OffsetHigh:16; // Offset bits 31..16
+ } Bits;
+ UINT64 Uint64;
+} IA32_IDT_GATE_DESCRIPTOR;
+
+//
+// Byte packed structure for an FP/SSE/SSE2 context
+//
+typedef struct {
+ UINT8 Buffer[512];
+} IA32_FX_BUFFER;
+
+//
+// Structures for the 16-bit real mode thunks
+//
+typedef struct {
+ UINT32 Reserved1;
+ UINT32 Reserved2;
+ UINT32 Reserved3;
+ UINT32 Reserved4;
+ UINT8 BL;
+ UINT8 BH;
+ UINT16 Reserved5;
+ UINT8 DL;
+ UINT8 DH;
+ UINT16 Reserved6;
+ UINT8 CL;
+ UINT8 CH;
+ UINT16 Reserved7;
+ UINT8 AL;
+ UINT8 AH;
+ UINT16 Reserved8;
+} IA32_BYTE_REGS;
+
+typedef struct {
+ UINT16 DI;
+ UINT16 Reserved1;
+ UINT16 SI;
+ UINT16 Reserved2;
+ UINT16 BP;
+ UINT16 Reserved3;
+ UINT16 SP;
+ UINT16 Reserved4;
+ UINT16 BX;
+ UINT16 Reserved5;
+ UINT16 DX;
+ UINT16 Reserved6;
+ UINT16 CX;
+ UINT16 Reserved7;
+ UINT16 AX;
+ UINT16 Reserved8;
+} IA32_WORD_REGS;
+
+typedef struct {
+ UINT32 EDI;
+ UINT32 ESI;
+ UINT32 EBP;
+ UINT32 ESP;
+ UINT32 EBX;
+ UINT32 EDX;
+ UINT32 ECX;
+ UINT32 EAX;
+ UINT16 DS;
+ UINT16 ES;
+ UINT16 FS;
+ UINT16 GS;
+ IA32_EFLAGS32 EFLAGS;
+ UINT32 Eip;
+ UINT16 CS;
+ UINT16 SS;
+} IA32_DWORD_REGS;
+
+typedef union {
+ IA32_DWORD_REGS E;
+ IA32_WORD_REGS X;
+ IA32_BYTE_REGS H;
+} IA32_REGISTER_SET;
+
+//
+// Byte packed structure for an 16-bit real mode thunks
+//
+typedef struct {
+ IA32_REGISTER_SET *RealModeState;
+ VOID *RealModeBuffer;
+ UINT32 RealModeBufferSize;
+ UINT32 ThunkAttributes;
+} THUNK_CONTEXT;
+
+#define THUNK_ATTRIBUTE_BIG_REAL_MODE 0x00000001
+#define THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 0x00000002
+#define THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL 0x00000004
+
+/**
+ Retrieves CPUID information.
+
+ Executes the CPUID instruction with EAX set to the value specified by Index.
+ This function always returns Index.
+ If Eax is not NULL, then the value of EAX after CPUID is returned in Eax.
+ If Ebx is not NULL, then the value of EBX after CPUID is returned in Ebx.
+ If Ecx is not NULL, then the value of ECX after CPUID is returned in Ecx.
+ If Edx is not NULL, then the value of EDX after CPUID is returned in Edx.
+ This function is only available on IA-32 and X64.
+
+ @param Index The 32-bit value to load into EAX prior to invoking the CPUID
+ instruction.
+ @param Eax Pointer to the 32-bit EAX value returned by the CPUID
+ instruction. This is an optional parameter that may be NULL.
+ @param Ebx Pointer to the 32-bit EBX value returned by the CPUID
+ instruction. This is an optional parameter that may be NULL.
+ @param Ecx Pointer to the 32-bit ECX value returned by the CPUID
+ instruction. This is an optional parameter that may be NULL.
+ @param Edx Pointer to the 32-bit EDX value returned by the CPUID
+ instruction. This is an optional parameter that may be NULL.
+
+ @return Index
+
+**/
+UINT32
+EFIAPI
+AsmCpuid (
+ IN UINT32 Index,
+ OUT UINT32 *Eax, OPTIONAL
+ OUT UINT32 *Ebx, OPTIONAL
+ OUT UINT32 *Ecx, OPTIONAL
+ OUT UINT32 *Edx OPTIONAL
+ );
+
+
+/**
+ Retrieves CPUID information using an extended leaf identifier.
+
+ Executes the CPUID instruction with EAX set to the value specified by Index
+ and ECX set to the value specified by SubIndex. This function always returns
+ Index. This function is only available on IA-32 and x64.
+
+ If Eax is not NULL, then the value of EAX after CPUID is returned in Eax.
+ If Ebx is not NULL, then the value of EBX after CPUID is returned in Ebx.
+ If Ecx is not NULL, then the value of ECX after CPUID is returned in Ecx.
+ If Edx is not NULL, then the value of EDX after CPUID is returned in Edx.
+
+ @param Index The 32-bit value to load into EAX prior to invoking the
+ CPUID instruction.
+ @param SubIndex The 32-bit value to load into ECX prior to invoking the
+ CPUID instruction.
+ @param Eax Pointer to the 32-bit EAX value returned by the CPUID
+ instruction. This is an optional parameter that may be
+ NULL.
+ @param Ebx Pointer to the 32-bit EBX value returned by the CPUID
+ instruction. This is an optional parameter that may be
+ NULL.
+ @param Ecx Pointer to the 32-bit ECX value returned by the CPUID
+ instruction. This is an optional parameter that may be
+ NULL.
+ @param Edx Pointer to the 32-bit EDX value returned by the CPUID
+ instruction. This is an optional parameter that may be
+ NULL.
+
+ @return Index
+
+**/
+UINT32
+EFIAPI
+AsmCpuidEx (
+ IN UINT32 Index,
+ IN UINT32 SubIndex,
+ OUT UINT32 *Eax, OPTIONAL
+ OUT UINT32 *Ebx, OPTIONAL
+ OUT UINT32 *Ecx, OPTIONAL
+ OUT UINT32 *Edx OPTIONAL
+ );
+
+
+/**
+ Returns the lower 32-bits of a Machine Specific Register(MSR).
+
+ Reads and returns the lower 32-bits of the MSR specified by Index.
+ No parameter checking is performed on Index, and some Index values may cause
+ CPU exceptions. The caller must either guarantee that Index is valid, or the
+ caller must set up exception handlers to catch the exceptions. This function
+ is only available on IA-32 and X64.
+
+ @param Index The 32-bit MSR index to read.
+
+ @return The lower 32 bits of the MSR identified by Index.
+
+**/
+UINT32
+EFIAPI
+AsmReadMsr32 (
+ IN UINT32 Index
+ );
+
+
+/**
+ Zero-extend a 32-bit value and writes it to a Machine Specific Register(MSR).
+
+ Writes the 32-bit value specified by Value to the MSR specified by Index. The
+ upper 32-bits of the MSR write are set to zero. The 32-bit value written to
+ the MSR is returned. No parameter checking is performed on Index or Value,
+ and some of these may cause CPU exceptions. The caller must either guarantee
+ that Index and Value are valid, or the caller must establish proper exception
+ handlers. This function is only available on IA-32 and X64.
+
+ @param Index The 32-bit MSR index to write.
+ @param Value The 32-bit value to write to the MSR.
+
+ @return Value
+
+**/
+UINT32
+EFIAPI
+AsmWriteMsr32 (
+ IN UINT32 Index,
+ IN UINT32 Value
+ );
+
+
+/**
+ Reads a 64-bit MSR, performs a bitwise inclusive OR on the lower 32-bits, and
+ writes the result back to the 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise inclusive OR
+ between the lower 32-bits of the read result and the value specified by
+ OrData, and writes the result to the 64-bit MSR specified by Index. The lower
+ 32-bits of the value written to the MSR is returned. No parameter checking is
+ performed on Index or OrData, and some of these may cause CPU exceptions. The
+ caller must either guarantee that Index and OrData are valid, or the caller
+ must establish proper exception handlers. This function is only available on
+ IA-32 and X64.
+
+ @param Index The 32-bit MSR index to write.
+ @param OrData The value to OR with the read value from the MSR.
+
+ @return The lower 32-bit value written to the MSR.
+
+**/
+UINT32
+EFIAPI
+AsmMsrOr32 (
+ IN UINT32 Index,
+ IN UINT32 OrData
+ );
+
+
+/**
+ Reads a 64-bit MSR, performs a bitwise AND on the lower 32-bits, and writes
+ the result back to the 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise AND between the
+ lower 32-bits of the read result and the value specified by AndData, and
+ writes the result to the 64-bit MSR specified by Index. The lower 32-bits of
+ the value written to the MSR is returned. No parameter checking is performed
+ on Index or AndData, and some of these may cause CPU exceptions. The caller
+ must either guarantee that Index and AndData are valid, or the caller must
+ establish proper exception handlers. This function is only available on IA-32
+ and X64.
+
+ @param Index The 32-bit MSR index to write.
+ @param AndData The value to AND with the read value from the MSR.
+
+ @return The lower 32-bit value written to the MSR.
+
+**/
+UINT32
+EFIAPI
+AsmMsrAnd32 (
+ IN UINT32 Index,
+ IN UINT32 AndData
+ );
+
+
+/**
+ Reads a 64-bit MSR, performs a bitwise AND followed by a bitwise inclusive OR
+ on the lower 32-bits, and writes the result back to the 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise AND between the
+ lower 32-bits of the read result and the value specified by AndData
+ preserving the upper 32-bits, performs a bitwise inclusive OR between the
+ result of the AND operation and the value specified by OrData, and writes the
+ result to the 64-bit MSR specified by Address. The lower 32-bits of the value
+ written to the MSR is returned. No parameter checking is performed on Index,
+ AndData, or OrData, and some of these may cause CPU exceptions. The caller
+ must either guarantee that Index, AndData, and OrData are valid, or the
+ caller must establish proper exception handlers. This function is only
+ available on IA-32 and X64.
+
+ @param Index The 32-bit MSR index to write.
+ @param AndData The value to AND with the read value from the MSR.
+ @param OrData The value to OR with the result of the AND operation.
+
+ @return The lower 32-bit value written to the MSR.
+
+**/
+UINT32
+EFIAPI
+AsmMsrAndThenOr32 (
+ IN UINT32 Index,
+ IN UINT32 AndData,
+ IN UINT32 OrData
+ );
+
+
+/**
+ Reads a bit field of an MSR.
+
+ Reads the bit field in the lower 32-bits of a 64-bit MSR. The bit field is
+ specified by the StartBit and the EndBit. The value of the bit field is
+ returned. The caller must either guarantee that Index is valid, or the caller
+ must set up exception handlers to catch the exceptions. This function is only
+ available on IA-32 and X64.
+
+ If StartBit is greater than 31, then ASSERT().
+ If EndBit is greater than 31, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Index The 32-bit MSR index to read.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..31.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..31.
+
+ @return The bit field read from the MSR.
+
+**/
+UINT32
+EFIAPI
+AsmMsrBitFieldRead32 (
+ IN UINT32 Index,
+ IN UINTN StartBit,
+ IN UINTN EndBit
+ );
+
+
+/**
+ Writes a bit field to an MSR.
+
+ Writes Value to a bit field in the lower 32-bits of a 64-bit MSR. The bit
+ field is specified by the StartBit and the EndBit. All other bits in the
+ destination MSR are preserved. The lower 32-bits of the MSR written is
+ returned. Extra left bits in Value are stripped. The caller must either
+ guarantee that Index and the data written is valid, or the caller must set up
+ exception handlers to catch the exceptions. This function is only available
+ on IA-32 and X64.
+
+ If StartBit is greater than 31, then ASSERT().
+ If EndBit is greater than 31, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Index The 32-bit MSR index to write.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..31.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..31.
+ @param Value New value of the bit field.
+
+ @return The lower 32-bit of the value written to the MSR.
+
+**/
+UINT32
+EFIAPI
+AsmMsrBitFieldWrite32 (
+ IN UINT32 Index,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT32 Value
+ );
+
+
+/**
+ Reads a bit field in a 64-bit MSR, performs a bitwise OR, and writes the
+ result back to the bit field in the 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise inclusive OR
+ between the read result and the value specified by OrData, and writes the
+ result to the 64-bit MSR specified by Index. The lower 32-bits of the value
+ written to the MSR are returned. Extra left bits in OrData are stripped. The
+ caller must either guarantee that Index and the data written is valid, or
+ the caller must set up exception handlers to catch the exceptions. This
+ function is only available on IA-32 and X64.
+
+ If StartBit is greater than 31, then ASSERT().
+ If EndBit is greater than 31, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Index The 32-bit MSR index to write.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..31.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..31.
+ @param OrData The value to OR with the read value from the MSR.
+
+ @return The lower 32-bit of the value written to the MSR.
+
+**/
+UINT32
+EFIAPI
+AsmMsrBitFieldOr32 (
+ IN UINT32 Index,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT32 OrData
+ );
+
+
+/**
+ Reads a bit field in a 64-bit MSR, performs a bitwise AND, and writes the
+ result back to the bit field in the 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise AND between the
+ read result and the value specified by AndData, and writes the result to the
+ 64-bit MSR specified by Index. The lower 32-bits of the value written to the
+ MSR are returned. Extra left bits in AndData are stripped. The caller must
+ either guarantee that Index and the data written is valid, or the caller must
+ set up exception handlers to catch the exceptions. This function is only
+ available on IA-32 and X64.
+
+ If StartBit is greater than 31, then ASSERT().
+ If EndBit is greater than 31, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Index The 32-bit MSR index to write.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..31.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..31.
+ @param AndData The value to AND with the read value from the MSR.
+
+ @return The lower 32-bit of the value written to the MSR.
+
+**/
+UINT32
+EFIAPI
+AsmMsrBitFieldAnd32 (
+ IN UINT32 Index,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT32 AndData
+ );
+
+
+/**
+ Reads a bit field in a 64-bit MSR, performs a bitwise AND followed by a
+ bitwise inclusive OR, and writes the result back to the bit field in the
+ 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise AND followed by a
+ bitwise inclusive OR between the read result and the value specified by
+ AndData, and writes the result to the 64-bit MSR specified by Index. The
+ lower 32-bits of the value written to the MSR are returned. Extra left bits
+ in both AndData and OrData are stripped. The caller must either guarantee
+ that Index and the data written is valid, or the caller must set up exception
+ handlers to catch the exceptions. This function is only available on IA-32
+ and X64.
+
+ If StartBit is greater than 31, then ASSERT().
+ If EndBit is greater than 31, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Index The 32-bit MSR index to write.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..31.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..31.
+ @param AndData The value to AND with the read value from the MSR.
+ @param OrData The value to OR with the result of the AND operation.
+
+ @return The lower 32-bit of the value written to the MSR.
+
+**/
+UINT32
+EFIAPI
+AsmMsrBitFieldAndThenOr32 (
+ IN UINT32 Index,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT32 AndData,
+ IN UINT32 OrData
+ );
+
+
+/**
+ Returns a 64-bit Machine Specific Register(MSR).
+
+ Reads and returns the 64-bit MSR specified by Index. No parameter checking is
+ performed on Index, and some Index values may cause CPU exceptions. The
+ caller must either guarantee that Index is valid, or the caller must set up
+ exception handlers to catch the exceptions. This function is only available
+ on IA-32 and X64.
+
+ @param Index The 32-bit MSR index to read.
+
+ @return The value of the MSR identified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadMsr64 (
+ IN UINT32 Index
+ );
+
+
+/**
+ Writes a 64-bit value to a Machine Specific Register(MSR), and returns the
+ value.
+
+ Writes the 64-bit value specified by Value to the MSR specified by Index. The
+ 64-bit value written to the MSR is returned. No parameter checking is
+ performed on Index or Value, and some of these may cause CPU exceptions. The
+ caller must either guarantee that Index and Value are valid, or the caller
+ must establish proper exception handlers. This function is only available on
+ IA-32 and X64.
+
+ @param Index The 32-bit MSR index to write.
+ @param Value The 64-bit value to write to the MSR.
+
+ @return Value
+
+**/
+UINT64
+EFIAPI
+AsmWriteMsr64 (
+ IN UINT32 Index,
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads a 64-bit MSR, performs a bitwise inclusive OR, and writes the result
+ back to the 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise inclusive OR
+ between the read result and the value specified by OrData, and writes the
+ result to the 64-bit MSR specified by Index. The value written to the MSR is
+ returned. No parameter checking is performed on Index or OrData, and some of
+ these may cause CPU exceptions. The caller must either guarantee that Index
+ and OrData are valid, or the caller must establish proper exception handlers.
+ This function is only available on IA-32 and X64.
+
+ @param Index The 32-bit MSR index to write.
+ @param OrData The value to OR with the read value from the MSR.
+
+ @return The value written back to the MSR.
+
+**/
+UINT64
+EFIAPI
+AsmMsrOr64 (
+ IN UINT32 Index,
+ IN UINT64 OrData
+ );
+
+
+/**
+ Reads a 64-bit MSR, performs a bitwise AND, and writes the result back to the
+ 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise AND between the
+ read result and the value specified by OrData, and writes the result to the
+ 64-bit MSR specified by Index. The value written to the MSR is returned. No
+ parameter checking is performed on Index or OrData, and some of these may
+ cause CPU exceptions. The caller must either guarantee that Index and OrData
+ are valid, or the caller must establish proper exception handlers. This
+ function is only available on IA-32 and X64.
+
+ @param Index The 32-bit MSR index to write.
+ @param AndData The value to AND with the read value from the MSR.
+
+ @return The value written back to the MSR.
+
+**/
+UINT64
+EFIAPI
+AsmMsrAnd64 (
+ IN UINT32 Index,
+ IN UINT64 AndData
+ );
+
+
+/**
+ Reads a 64-bit MSR, performs a bitwise AND followed by a bitwise inclusive
+ OR, and writes the result back to the 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise AND between read
+ result and the value specified by AndData, performs a bitwise inclusive OR
+ between the result of the AND operation and the value specified by OrData,
+ and writes the result to the 64-bit MSR specified by Index. The value written
+ to the MSR is returned. No parameter checking is performed on Index, AndData,
+ or OrData, and some of these may cause CPU exceptions. The caller must either
+ guarantee that Index, AndData, and OrData are valid, or the caller must
+ establish proper exception handlers. This function is only available on IA-32
+ and X64.
+
+ @param Index The 32-bit MSR index to write.
+ @param AndData The value to AND with the read value from the MSR.
+ @param OrData The value to OR with the result of the AND operation.
+
+ @return The value written back to the MSR.
+
+**/
+UINT64
+EFIAPI
+AsmMsrAndThenOr64 (
+ IN UINT32 Index,
+ IN UINT64 AndData,
+ IN UINT64 OrData
+ );
+
+
+/**
+ Reads a bit field of an MSR.
+
+ Reads the bit field in the 64-bit MSR. The bit field is specified by the
+ StartBit and the EndBit. The value of the bit field is returned. The caller
+ must either guarantee that Index is valid, or the caller must set up
+ exception handlers to catch the exceptions. This function is only available
+ on IA-32 and X64.
+
+ If StartBit is greater than 63, then ASSERT().
+ If EndBit is greater than 63, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Index The 32-bit MSR index to read.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+
+ @return The value read from the MSR.
+
+**/
+UINT64
+EFIAPI
+AsmMsrBitFieldRead64 (
+ IN UINT32 Index,
+ IN UINTN StartBit,
+ IN UINTN EndBit
+ );
+
+
+/**
+ Writes a bit field to an MSR.
+
+ Writes Value to a bit field in a 64-bit MSR. The bit field is specified by
+ the StartBit and the EndBit. All other bits in the destination MSR are
+ preserved. The MSR written is returned. Extra left bits in Value are
+ stripped. The caller must either guarantee that Index and the data written is
+ valid, or the caller must set up exception handlers to catch the exceptions.
+ This function is only available on IA-32 and X64.
+
+ If StartBit is greater than 63, then ASSERT().
+ If EndBit is greater than 63, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Index The 32-bit MSR index to write.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param Value New value of the bit field.
+
+ @return The value written back to the MSR.
+
+**/
+UINT64
+EFIAPI
+AsmMsrBitFieldWrite64 (
+ IN UINT32 Index,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads a bit field in a 64-bit MSR, performs a bitwise inclusive OR, and
+ writes the result back to the bit field in the 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise inclusive OR
+ between the read result and the value specified by OrData, and writes the
+ result to the 64-bit MSR specified by Index. The value written to the MSR is
+ returned. Extra left bits in OrData are stripped. The caller must either
+ guarantee that Index and the data written is valid, or the caller must set up
+ exception handlers to catch the exceptions. This function is only available
+ on IA-32 and X64.
+
+ If StartBit is greater than 63, then ASSERT().
+ If EndBit is greater than 63, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Index The 32-bit MSR index to write.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param OrData The value to OR with the read value from the bit field.
+
+ @return The value written back to the MSR.
+
+**/
+UINT64
+EFIAPI
+AsmMsrBitFieldOr64 (
+ IN UINT32 Index,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 OrData
+ );
+
+
+/**
+ Reads a bit field in a 64-bit MSR, performs a bitwise AND, and writes the
+ result back to the bit field in the 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise AND between the
+ read result and the value specified by AndData, and writes the result to the
+ 64-bit MSR specified by Index. The value written to the MSR is returned.
+ Extra left bits in AndData are stripped. The caller must either guarantee
+ that Index and the data written is valid, or the caller must set up exception
+ handlers to catch the exceptions. This function is only available on IA-32
+ and X64.
+
+ If StartBit is greater than 63, then ASSERT().
+ If EndBit is greater than 63, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Index The 32-bit MSR index to write.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param AndData The value to AND with the read value from the bit field.
+
+ @return The value written back to the MSR.
+
+**/
+UINT64
+EFIAPI
+AsmMsrBitFieldAnd64 (
+ IN UINT32 Index,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 AndData
+ );
+
+
+/**
+ Reads a bit field in a 64-bit MSR, performs a bitwise AND followed by a
+ bitwise inclusive OR, and writes the result back to the bit field in the
+ 64-bit MSR.
+
+ Reads the 64-bit MSR specified by Index, performs a bitwise AND followed by
+ a bitwise inclusive OR between the read result and the value specified by
+ AndData, and writes the result to the 64-bit MSR specified by Index. The
+ value written to the MSR is returned. Extra left bits in both AndData and
+ OrData are stripped. The caller must either guarantee that Index and the data
+ written is valid, or the caller must set up exception handlers to catch the
+ exceptions. This function is only available on IA-32 and X64.
+
+ If StartBit is greater than 63, then ASSERT().
+ If EndBit is greater than 63, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
+
+ @param Index The 32-bit MSR index to write.
+ @param StartBit The ordinal of the least significant bit in the bit field.
+ Range 0..63.
+ @param EndBit The ordinal of the most significant bit in the bit field.
+ Range 0..63.
+ @param AndData The value to AND with the read value from the bit field.
+ @param OrData The value to OR with the result of the AND operation.
+
+ @return The value written back to the MSR.
+
+**/
+UINT64
+EFIAPI
+AsmMsrBitFieldAndThenOr64 (
+ IN UINT32 Index,
+ IN UINTN StartBit,
+ IN UINTN EndBit,
+ IN UINT64 AndData,
+ IN UINT64 OrData
+ );
+
+
+/**
+ Reads the current value of the EFLAGS register.
+
+ Reads and returns the current value of the EFLAGS register. This function is
+ only available on IA-32 and X64. This returns a 32-bit value on IA-32 and a
+ 64-bit value on X64.
+
+ @return EFLAGS on IA-32 or RFLAGS on X64.
+
+**/
+UINTN
+EFIAPI
+AsmReadEflags (
+ VOID
+ );
+
+
+/**
+ Reads the current value of the Control Register 0 (CR0).
+
+ Reads and returns the current value of CR0. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of the Control Register 0 (CR0).
+
+**/
+UINTN
+EFIAPI
+AsmReadCr0 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of the Control Register 2 (CR2).
+
+ Reads and returns the current value of CR2. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of the Control Register 2 (CR2).
+
+**/
+UINTN
+EFIAPI
+AsmReadCr2 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of the Control Register 3 (CR3).
+
+ Reads and returns the current value of CR3. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of the Control Register 3 (CR3).
+
+**/
+UINTN
+EFIAPI
+AsmReadCr3 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of the Control Register 4 (CR4).
+
+ Reads and returns the current value of CR4. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of the Control Register 4 (CR4).
+
+**/
+UINTN
+EFIAPI
+AsmReadCr4 (
+ VOID
+ );
+
+
+/**
+ Writes a value to Control Register 0 (CR0).
+
+ Writes and returns a new value to CR0. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Cr0 The value to write to CR0.
+
+ @return The value written to CR0.
+
+**/
+UINTN
+EFIAPI
+AsmWriteCr0 (
+ UINTN Cr0
+ );
+
+
+/**
+ Writes a value to Control Register 2 (CR2).
+
+ Writes and returns a new value to CR2. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Cr2 The value to write to CR2.
+
+ @return The value written to CR2.
+
+**/
+UINTN
+EFIAPI
+AsmWriteCr2 (
+ UINTN Cr2
+ );
+
+
+/**
+ Writes a value to Control Register 3 (CR3).
+
+ Writes and returns a new value to CR3. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Cr3 The value to write to CR3.
+
+ @return The value written to CR3.
+
+**/
+UINTN
+EFIAPI
+AsmWriteCr3 (
+ UINTN Cr3
+ );
+
+
+/**
+ Writes a value to Control Register 4 (CR4).
+
+ Writes and returns a new value to CR4. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Cr4 The value to write to CR4.
+
+ @return The value written to CR4.
+
+**/
+UINTN
+EFIAPI
+AsmWriteCr4 (
+ UINTN Cr4
+ );
+
+
+/**
+ Reads the current value of Debug Register 0 (DR0).
+
+ Reads and returns the current value of DR0. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of Debug Register 0 (DR0).
+
+**/
+UINTN
+EFIAPI
+AsmReadDr0 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Debug Register 1 (DR1).
+
+ Reads and returns the current value of DR1. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of Debug Register 1 (DR1).
+
+**/
+UINTN
+EFIAPI
+AsmReadDr1 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Debug Register 2 (DR2).
+
+ Reads and returns the current value of DR2. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of Debug Register 2 (DR2).
+
+**/
+UINTN
+EFIAPI
+AsmReadDr2 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Debug Register 3 (DR3).
+
+ Reads and returns the current value of DR3. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of Debug Register 3 (DR3).
+
+**/
+UINTN
+EFIAPI
+AsmReadDr3 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Debug Register 4 (DR4).
+
+ Reads and returns the current value of DR4. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of Debug Register 4 (DR4).
+
+**/
+UINTN
+EFIAPI
+AsmReadDr4 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Debug Register 5 (DR5).
+
+ Reads and returns the current value of DR5. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of Debug Register 5 (DR5).
+
+**/
+UINTN
+EFIAPI
+AsmReadDr5 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Debug Register 6 (DR6).
+
+ Reads and returns the current value of DR6. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of Debug Register 6 (DR6).
+
+**/
+UINTN
+EFIAPI
+AsmReadDr6 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Debug Register 7 (DR7).
+
+ Reads and returns the current value of DR7. This function is only available
+ on IA-32 and X64. This returns a 32-bit value on IA-32 and a 64-bit value on
+ X64.
+
+ @return The value of Debug Register 7 (DR7).
+
+**/
+UINTN
+EFIAPI
+AsmReadDr7 (
+ VOID
+ );
+
+
+/**
+ Writes a value to Debug Register 0 (DR0).
+
+ Writes and returns a new value to DR0. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Dr0 The value to write to Dr0.
+
+ @return The value written to Debug Register 0 (DR0).
+
+**/
+UINTN
+EFIAPI
+AsmWriteDr0 (
+ UINTN Dr0
+ );
+
+
+/**
+ Writes a value to Debug Register 1 (DR1).
+
+ Writes and returns a new value to DR1. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Dr1 The value to write to Dr1.
+
+ @return The value written to Debug Register 1 (DR1).
+
+**/
+UINTN
+EFIAPI
+AsmWriteDr1 (
+ UINTN Dr1
+ );
+
+
+/**
+ Writes a value to Debug Register 2 (DR2).
+
+ Writes and returns a new value to DR2. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Dr2 The value to write to Dr2.
+
+ @return The value written to Debug Register 2 (DR2).
+
+**/
+UINTN
+EFIAPI
+AsmWriteDr2 (
+ UINTN Dr2
+ );
+
+
+/**
+ Writes a value to Debug Register 3 (DR3).
+
+ Writes and returns a new value to DR3. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Dr3 The value to write to Dr3.
+
+ @return The value written to Debug Register 3 (DR3).
+
+**/
+UINTN
+EFIAPI
+AsmWriteDr3 (
+ UINTN Dr3
+ );
+
+
+/**
+ Writes a value to Debug Register 4 (DR4).
+
+ Writes and returns a new value to DR4. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Dr4 The value to write to Dr4.
+
+ @return The value written to Debug Register 4 (DR4).
+
+**/
+UINTN
+EFIAPI
+AsmWriteDr4 (
+ UINTN Dr4
+ );
+
+
+/**
+ Writes a value to Debug Register 5 (DR5).
+
+ Writes and returns a new value to DR5. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Dr5 The value to write to Dr5.
+
+ @return The value written to Debug Register 5 (DR5).
+
+**/
+UINTN
+EFIAPI
+AsmWriteDr5 (
+ UINTN Dr5
+ );
+
+
+/**
+ Writes a value to Debug Register 6 (DR6).
+
+ Writes and returns a new value to DR6. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Dr6 The value to write to Dr6.
+
+ @return The value written to Debug Register 6 (DR6).
+
+**/
+UINTN
+EFIAPI
+AsmWriteDr6 (
+ UINTN Dr6
+ );
+
+
+/**
+ Writes a value to Debug Register 7 (DR7).
+
+ Writes and returns a new value to DR7. This function is only available on
+ IA-32 and X64. This writes a 32-bit value on IA-32 and a 64-bit value on X64.
+
+ @param Dr7 The value to write to Dr7.
+
+ @return The value written to Debug Register 7 (DR7).
+
+**/
+UINTN
+EFIAPI
+AsmWriteDr7 (
+ UINTN Dr7
+ );
+
+
+/**
+ Reads the current value of Code Segment Register (CS).
+
+ Reads and returns the current value of CS. This function is only available on
+ IA-32 and X64.
+
+ @return The current value of CS.
+
+**/
+UINT16
+EFIAPI
+AsmReadCs (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Data Segment Register (DS).
+
+ Reads and returns the current value of DS. This function is only available on
+ IA-32 and X64.
+
+ @return The current value of DS.
+
+**/
+UINT16
+EFIAPI
+AsmReadDs (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Extra Segment Register (ES).
+
+ Reads and returns the current value of ES. This function is only available on
+ IA-32 and X64.
+
+ @return The current value of ES.
+
+**/
+UINT16
+EFIAPI
+AsmReadEs (
+ VOID
+ );
+
+
+/**
+ Reads the current value of FS Data Segment Register (FS).
+
+ Reads and returns the current value of FS. This function is only available on
+ IA-32 and X64.
+
+ @return The current value of FS.
+
+**/
+UINT16
+EFIAPI
+AsmReadFs (
+ VOID
+ );
+
+
+/**
+ Reads the current value of GS Data Segment Register (GS).
+
+ Reads and returns the current value of GS. This function is only available on
+ IA-32 and X64.
+
+ @return The current value of GS.
+
+**/
+UINT16
+EFIAPI
+AsmReadGs (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Stack Segment Register (SS).
+
+ Reads and returns the current value of SS. This function is only available on
+ IA-32 and X64.
+
+ @return The current value of SS.
+
+**/
+UINT16
+EFIAPI
+AsmReadSs (
+ VOID
+ );
+
+
+/**
+ Reads the current value of Task Register (TR).
+
+ Reads and returns the current value of TR. This function is only available on
+ IA-32 and X64.
+
+ @return The current value of TR.
+
+**/
+UINT16
+EFIAPI
+AsmReadTr (
+ VOID
+ );
+
+
+/**
+ Reads the current Global Descriptor Table Register(GDTR) descriptor.
+
+ Reads and returns the current GDTR descriptor and returns it in Gdtr. This
+ function is only available on IA-32 and X64.
+
+ If Gdtr is NULL, then ASSERT().
+
+ @param Gdtr Pointer to a GDTR descriptor.
+
+**/
+VOID
+EFIAPI
+AsmReadGdtr (
+ OUT IA32_DESCRIPTOR *Gdtr
+ );
+
+
+/**
+ Writes the current Global Descriptor Table Register (GDTR) descriptor.
+
+ Writes and the current GDTR descriptor specified by Gdtr. This function is
+ only available on IA-32 and X64.
+
+ If Gdtr is NULL, then ASSERT().
+
+ @param Gdtr Pointer to a GDTR descriptor.
+
+**/
+VOID
+EFIAPI
+AsmWriteGdtr (
+ IN CONST IA32_DESCRIPTOR *Gdtr
+ );
+
+
+/**
+ Reads the current Interrupt Descriptor Table Register(GDTR) descriptor.
+
+ Reads and returns the current IDTR descriptor and returns it in Idtr. This
+ function is only available on IA-32 and X64.
+
+ If Idtr is NULL, then ASSERT().
+
+ @param Idtr Pointer to a IDTR descriptor.
+
+**/
+VOID
+EFIAPI
+AsmReadIdtr (
+ OUT IA32_DESCRIPTOR *Idtr
+ );
+
+
+/**
+ Writes the current Interrupt Descriptor Table Register(GDTR) descriptor.
+
+ Writes the current IDTR descriptor and returns it in Idtr. This function is
+ only available on IA-32 and X64.
+
+ If Idtr is NULL, then ASSERT().
+
+ @param Idtr Pointer to a IDTR descriptor.
+
+**/
+VOID
+EFIAPI
+AsmWriteIdtr (
+ IN CONST IA32_DESCRIPTOR *Idtr
+ );
+
+
+/**
+ Reads the current Local Descriptor Table Register(LDTR) selector.
+
+ Reads and returns the current 16-bit LDTR descriptor value. This function is
+ only available on IA-32 and X64.
+
+ @return The current selector of LDT.
+
+**/
+UINT16
+EFIAPI
+AsmReadLdtr (
+ VOID
+ );
+
+
+/**
+ Writes the current Local Descriptor Table Register (GDTR) selector.
+
+ Writes and the current LDTR descriptor specified by Ldtr. This function is
+ only available on IA-32 and X64.
+
+ @param Ldtr 16-bit LDTR selector value.
+
+**/
+VOID
+EFIAPI
+AsmWriteLdtr (
+ IN UINT16 Ldtr
+ );
+
+
+/**
+ Save the current floating point/SSE/SSE2 context to a buffer.
+
+ Saves the current floating point/SSE/SSE2 state to the buffer specified by
+ Buffer. Buffer must be aligned on a 16-byte boundary. This function is only
+ available on IA-32 and X64.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 16-byte boundary, then ASSERT().
+
+ @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.
+
+**/
+VOID
+EFIAPI
+AsmFxSave (
+ OUT IA32_FX_BUFFER *Buffer
+ );
+
+
+/**
+ Restores the current floating point/SSE/SSE2 context from a buffer.
+
+ Restores the current floating point/SSE/SSE2 state from the buffer specified
+ by Buffer. Buffer must be aligned on a 16-byte boundary. This function is
+ only available on IA-32 and X64.
+
+ If Buffer is NULL, then ASSERT().
+ If Buffer is not aligned on a 16-byte boundary, then ASSERT().
+ If Buffer was not saved with AsmFxSave(), then ASSERT().
+
+ @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.
+
+**/
+VOID
+EFIAPI
+AsmFxRestore (
+ IN CONST IA32_FX_BUFFER *Buffer
+ );
+
+
+/**
+ Reads the current value of 64-bit MMX Register #0 (MM0).
+
+ Reads and returns the current value of MM0. This function is only available
+ on IA-32 and X64.
+
+ @return The current value of MM0.
+
+**/
+UINT64
+EFIAPI
+AsmReadMm0 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit MMX Register #1 (MM1).
+
+ Reads and returns the current value of MM1. This function is only available
+ on IA-32 and X64.
+
+ @return The current value of MM1.
+
+**/
+UINT64
+EFIAPI
+AsmReadMm1 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit MMX Register #2 (MM2).
+
+ Reads and returns the current value of MM2. This function is only available
+ on IA-32 and X64.
+
+ @return The current value of MM2.
+
+**/
+UINT64
+EFIAPI
+AsmReadMm2 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit MMX Register #3 (MM3).
+
+ Reads and returns the current value of MM3. This function is only available
+ on IA-32 and X64.
+
+ @return The current value of MM3.
+
+**/
+UINT64
+EFIAPI
+AsmReadMm3 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit MMX Register #4 (MM4).
+
+ Reads and returns the current value of MM4. This function is only available
+ on IA-32 and X64.
+
+ @return The current value of MM4.
+
+**/
+UINT64
+EFIAPI
+AsmReadMm4 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit MMX Register #5 (MM5).
+
+ Reads and returns the current value of MM5. This function is only available
+ on IA-32 and X64.
+
+ @return The current value of MM5.
+
+**/
+UINT64
+EFIAPI
+AsmReadMm5 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit MMX Register #6 (MM6).
+
+ Reads and returns the current value of MM6. This function is only available
+ on IA-32 and X64.
+
+ @return The current value of MM6.
+
+**/
+UINT64
+EFIAPI
+AsmReadMm6 (
+ VOID
+ );
+
+
+/**
+ Reads the current value of 64-bit MMX Register #7 (MM7).
+
+ Reads and returns the current value of MM7. This function is only available
+ on IA-32 and X64.
+
+ @return The current value of MM7.
+
+**/
+UINT64
+EFIAPI
+AsmReadMm7 (
+ VOID
+ );
+
+
+/**
+ Writes the current value of 64-bit MMX Register #0 (MM0).
+
+ Writes the current value of MM0. This function is only available on IA32 and
+ X64.
+
+ @param Value The 64-bit value to write to MM0.
+
+**/
+VOID
+EFIAPI
+AsmWriteMm0 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit MMX Register #1 (MM1).
+
+ Writes the current value of MM1. This function is only available on IA32 and
+ X64.
+
+ @param Value The 64-bit value to write to MM1.
+
+**/
+VOID
+EFIAPI
+AsmWriteMm1 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit MMX Register #2 (MM2).
+
+ Writes the current value of MM2. This function is only available on IA32 and
+ X64.
+
+ @param Value The 64-bit value to write to MM2.
+
+**/
+VOID
+EFIAPI
+AsmWriteMm2 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit MMX Register #3 (MM3).
+
+ Writes the current value of MM3. This function is only available on IA32 and
+ X64.
+
+ @param Value The 64-bit value to write to MM3.
+
+**/
+VOID
+EFIAPI
+AsmWriteMm3 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit MMX Register #4 (MM4).
+
+ Writes the current value of MM4. This function is only available on IA32 and
+ X64.
+
+ @param Value The 64-bit value to write to MM4.
+
+**/
+VOID
+EFIAPI
+AsmWriteMm4 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit MMX Register #5 (MM5).
+
+ Writes the current value of MM5. This function is only available on IA32 and
+ X64.
+
+ @param Value The 64-bit value to write to MM5.
+
+**/
+VOID
+EFIAPI
+AsmWriteMm5 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit MMX Register #6 (MM6).
+
+ Writes the current value of MM6. This function is only available on IA32 and
+ X64.
+
+ @param Value The 64-bit value to write to MM6.
+
+**/
+VOID
+EFIAPI
+AsmWriteMm6 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Writes the current value of 64-bit MMX Register #7 (MM7).
+
+ Writes the current value of MM7. This function is only available on IA32 and
+ X64.
+
+ @param Value The 64-bit value to write to MM7.
+
+**/
+VOID
+EFIAPI
+AsmWriteMm7 (
+ IN UINT64 Value
+ );
+
+
+/**
+ Reads the current value of Time Stamp Counter (TSC).
+
+ Reads and returns the current value of TSC. This function is only available
+ on IA-32 and X64.
+
+ @return The current value of TSC
+
+**/
+UINT64
+EFIAPI
+AsmReadTsc (
+ VOID
+ );
+
+
+/**
+ Reads the current value of a Performance Counter (PMC).
+
+ Reads and returns the current value of performance counter specified by
+ Index. This function is only available on IA-32 and X64.
+
+ @param Index The 32-bit Performance Counter index to read.
+
+ @return The value of the PMC specified by Index.
+
+**/
+UINT64
+EFIAPI
+AsmReadPmc (
+ IN UINT32 Index
+ );
+
+
+/**
+ Sets up a monitor buffer that is used by AsmMwait().
+
+ Executes a MONITOR instruction with the register state specified by Eax, Ecx
+ and Edx. Returns Eax. This function is only available on IA-32 and X64.
+
+ @param Eax The value to load into EAX or RAX before executing the MONITOR
+ instruction.
+ @param Ecx The value to load into ECX or RCX before executing the MONITOR
+ instruction.
+ @param Edx The value to load into EDX or RDX before executing the MONITOR
+ instruction.
+
+ @return Eax
+
+**/
+UINTN
+EFIAPI
+AsmMonitor (
+ IN UINTN Eax,
+ IN UINTN Ecx,
+ IN UINTN Edx
+ );
+
+
+/**
+ Executes an MWAIT instruction.
+
+ Executes an MWAIT instruction with the register state specified by Eax and
+ Ecx. Returns Eax. This function is only available on IA-32 and X64.
+
+ @param Eax The value to load into EAX or RAX before executing the MONITOR
+ instruction.
+ @param Ecx The value to load into ECX or RCX before executing the MONITOR
+ instruction.
+
+ @return Eax
+
+**/
+UINTN
+EFIAPI
+AsmMwait (
+ IN UINTN Eax,
+ IN UINTN Ecx
+ );
+
+
+/**
+ Executes a WBINVD instruction.
+
+ Executes a WBINVD instruction. This function is only available on IA-32 and
+ X64.
+
+**/
+VOID
+EFIAPI
+AsmWbinvd (
+ VOID
+ );
+
+
+/**
+ Executes a INVD instruction.
+
+ Executes a INVD instruction. This function is only available on IA-32 and
+ X64.
+
+**/
+VOID
+EFIAPI
+AsmInvd (
+ VOID
+ );
+
+
+/**
+ Flushes a cache line from all the instruction and data caches within the
+ coherency domain of the CPU.
+
+ Flushed the cache line specified by LinearAddress, and returns LinearAddress.
+ This function is only available on IA-32 and X64.
+
+ @param LinearAddress The address of the cache line to flush. If the CPU is
+ in a physical addressing mode, then LinearAddress is a
+ physical address. If the CPU is in a virtual
+ addressing mode, then LinearAddress is a virtual
+ address.
+
+ @return LinearAddress
+**/
+VOID *
+EFIAPI
+AsmFlushCacheLine (
+ IN VOID *LinearAddress
+ );
+
+
+/**
+ Enables the 32-bit paging mode on the CPU.
+
+ Enables the 32-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables
+ must be properly initialized prior to calling this service. This function
+ assumes the current execution mode is 32-bit protected mode. This function is
+ only available on IA-32. After the 32-bit paging mode is enabled, control is
+ transferred to the function specified by EntryPoint using the new stack
+ specified by NewStack and passing in the parameters specified by Context1 and
+ Context2. Context1 and Context2 are optional and may be NULL. The function
+ EntryPoint must never return.
+
+ If the current execution mode is not 32-bit protected mode, then ASSERT().
+ If EntryPoint is NULL, then ASSERT().
+ If NewStack is NULL, then ASSERT().
+
+ There are a number of constraints that must be followed before calling this
+ function:
+ 1) Interrupts must be disabled.
+ 2) The caller must be in 32-bit protected mode with flat descriptors. This
+ means all descriptors must have a base of 0 and a limit of 4GB.
+ 3) CR0 and CR4 must be compatible with 32-bit protected mode with flat
+ descriptors.
+ 4) CR3 must point to valid page tables that will be used once the transition
+ is complete, and those page tables must guarantee that the pages for this
+ function and the stack are identity mapped.
+
+ @param EntryPoint A pointer to function to call with the new stack after
+ paging is enabled.
+ @param Context1 A pointer to the context to pass into the EntryPoint
+ function as the first parameter after paging is enabled.
+ @param Context2 A pointer to the context to pass into the EntryPoint
+ function as the second parameter after paging is enabled.
+ @param NewStack A pointer to the new stack to use for the EntryPoint
+ function after paging is enabled.
+
+**/
+VOID
+EFIAPI
+AsmEnablePaging32 (
+ IN SWITCH_STACK_ENTRY_POINT EntryPoint,
+ IN VOID *Context1, OPTIONAL
+ IN VOID *Context2, OPTIONAL
+ IN VOID *NewStack
+ );
+
+
+/**
+ Disables the 32-bit paging mode on the CPU.
+
+ Disables the 32-bit paging mode on the CPU and returns to 32-bit protected
+ mode. This function assumes the current execution mode is 32-paged protected
+ mode. This function is only available on IA-32. After the 32-bit paging mode
+ is disabled, control is transferred to the function specified by EntryPoint
+ using the new stack specified by NewStack and passing in the parameters
+ specified by Context1 and Context2. Context1 and Context2 are optional and
+ may be NULL. The function EntryPoint must never return.
+
+ If the current execution mode is not 32-bit paged mode, then ASSERT().
+ If EntryPoint is NULL, then ASSERT().
+ If NewStack is NULL, then ASSERT().
+
+ There are a number of constraints that must be followed before calling this
+ function:
+ 1) Interrupts must be disabled.
+ 2) The caller must be in 32-bit paged mode.
+ 3) CR0, CR3, and CR4 must be compatible with 32-bit paged mode.
+ 4) CR3 must point to valid page tables that guarantee that the pages for
+ this function and the stack are identity mapped.
+
+ @param EntryPoint A pointer to function to call with the new stack after
+ paging is disabled.
+ @param Context1 A pointer to the context to pass into the EntryPoint
+ function as the first parameter after paging is disabled.
+ @param Context2 A pointer to the context to pass into the EntryPoint
+ function as the second parameter after paging is
+ disabled.
+ @param NewStack A pointer to the new stack to use for the EntryPoint
+ function after paging is disabled.
+
+**/
+VOID
+EFIAPI
+AsmDisablePaging32 (
+ IN SWITCH_STACK_ENTRY_POINT EntryPoint,
+ IN VOID *Context1, OPTIONAL
+ IN VOID *Context2, OPTIONAL
+ IN VOID *NewStack
+ );
+
+
+/**
+ Enables the 64-bit paging mode on the CPU.
+
+ Enables the 64-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables
+ must be properly initialized prior to calling this service. This function
+ assumes the current execution mode is 32-bit protected mode with flat
+ descriptors. This function is only available on IA-32. After the 64-bit
+ paging mode is enabled, control is transferred to the function specified by
+ EntryPoint using the new stack specified by NewStack and passing in the
+ parameters specified by Context1 and Context2. Context1 and Context2 are
+ optional and may be 0. The function EntryPoint must never return.
+
+ If the current execution mode is not 32-bit protected mode with flat
+ descriptors, then ASSERT().
+ If EntryPoint is 0, then ASSERT().
+ If NewStack is 0, then ASSERT().
+
+ @param Cs The 16-bit selector to load in the CS before EntryPoint
+ is called. The descriptor in the GDT that this selector
+ references must be setup for long mode.
+ @param EntryPoint The 64-bit virtual address of the function to call with
+ the new stack after paging is enabled.
+ @param Context1 The 64-bit virtual address of the context to pass into
+ the EntryPoint function as the first parameter after
+ paging is enabled.
+ @param Context2 The 64-bit virtual address of the context to pass into
+ the EntryPoint function as the second parameter after
+ paging is enabled.
+ @param NewStack The 64-bit virtual address of the new stack to use for
+ the EntryPoint function after paging is enabled.
+
+**/
+VOID
+EFIAPI
+AsmEnablePaging64 (
+ IN UINT16 CodeSelector,
+ IN UINT64 EntryPoint,
+ IN UINT64 Context1, OPTIONAL
+ IN UINT64 Context2, OPTIONAL
+ IN UINT64 NewStack
+ );
+
+
+/**
+ Disables the 64-bit paging mode on the CPU.
+
+ Disables the 64-bit paging mode on the CPU and returns to 32-bit protected
+ mode. This function assumes the current execution mode is 64-paging mode.
+ This function is only available on X64. After the 64-bit paging mode is
+ disabled, control is transferred to the function specified by EntryPoint
+ using the new stack specified by NewStack and passing in the parameters
+ specified by Context1 and Context2. Context1 and Context2 are optional and
+ may be 0. The function EntryPoint must never return.
+
+ If the current execution mode is not 64-bit paged mode, then ASSERT().
+ If EntryPoint is 0, then ASSERT().
+ If NewStack is 0, then ASSERT().
+
+ @param Cs The 16-bit selector to load in the CS before EntryPoint
+ is called. The descriptor in the GDT that this selector
+ references must be setup for 32-bit protected mode.
+ @param EntryPoint The 64-bit virtual address of the function to call with
+ the new stack after paging is disabled.
+ @param Context1 The 64-bit virtual address of the context to pass into
+ the EntryPoint function as the first parameter after
+ paging is disabled.
+ @param Context2 The 64-bit virtual address of the context to pass into
+ the EntryPoint function as the second parameter after
+ paging is disabled.
+ @param NewStack The 64-bit virtual address of the new stack to use for
+ the EntryPoint function after paging is disabled.
+
+**/
+VOID
+EFIAPI
+AsmDisablePaging64 (
+ IN UINT16 CodeSelector,
+ IN UINT32 EntryPoint,
+ IN UINT32 Context1, OPTIONAL
+ IN UINT32 Context2, OPTIONAL
+ IN UINT32 NewStack
+ );
+
+
+//
+// 16-bit thunking services
+//
+
+/**
+ Retrieves the properties for 16-bit thunk functions.
+
+ Computes the size of the buffer and stack below 1MB required to use the
+ AsmPrepareThunk16(), AsmThunk16() and AsmPrepareAndThunk16() functions. This
+ buffer size is returned in RealModeBufferSize, and the stack size is returned
+ in ExtraStackSize. If parameters are passed to the 16-bit real mode code,
+ then the actual minimum stack size is ExtraStackSize plus the maximum number
+ of bytes that need to be passed to the 16-bit real mode code.
+
+ If RealModeBufferSize is NULL, then ASSERT().
+ If ExtraStackSize is NULL, then ASSERT().
+
+ @param RealModeBufferSize A pointer to the size of the buffer below 1MB
+ required to use the 16-bit thunk functions.
+ @param ExtraStackSize A pointer to the extra size of stack below 1MB
+ that the 16-bit thunk functions require for
+ temporary storage in the transition to and from
+ 16-bit real mode.
+
+**/
+VOID
+EFIAPI
+AsmGetThunk16Properties (
+ OUT UINT32 *RealModeBufferSize,
+ OUT UINT32 *ExtraStackSize
+ );
+
+
+/**
+ Prepares all structures a code required to use AsmThunk16().
+
+ Prepares all structures and code required to use AsmThunk16().
+
+ If ThunkContext is NULL, then ASSERT().
+
+ @param ThunkContext A pointer to the context structure that describes the
+ 16-bit real mode code to call.
+
+**/
+VOID
+EFIAPI
+AsmPrepareThunk16 (
+ OUT THUNK_CONTEXT *ThunkContext
+ );
+
+
+/**
+ Transfers control to a 16-bit real mode entry point and returns the results.
+
+ Transfers control to a 16-bit real mode entry point and returns the results.
+ AsmPrepareThunk16() must be called with ThunkContext before this function is
+ used.
+
+ If ThunkContext is NULL, then ASSERT().
+ If AsmPrepareThunk16() was not previously called with ThunkContext, then ASSERT().
+
+ @param ThunkContext A pointer to the context structure that describes the
+ 16-bit real mode code to call.
+
+**/
+VOID
+EFIAPI
+AsmThunk16 (
+ IN OUT THUNK_CONTEXT *ThunkContext
+ );
+
+
+/**
+ Prepares all structures and code for a 16-bit real mode thunk, transfers
+ control to a 16-bit real mode entry point, and returns the results.
+
+ Prepares all structures and code for a 16-bit real mode thunk, transfers
+ control to a 16-bit real mode entry point, and returns the results. If the
+ caller only need to perform a single 16-bit real mode thunk, then this
+ service should be used. If the caller intends to make more than one 16-bit
+ real mode thunk, then it is more efficient if AsmPrepareThunk16() is called
+ once and AsmThunk16() can be called for each 16-bit real mode thunk.
+
+ If ThunkContext is NULL, then ASSERT().
+
+ @param ThunkContext A pointer to the context structure that describes the
+ 16-bit real mode code to call.
+
+**/
+VOID
+EFIAPI
+AsmPrepareAndThunk16 (
+ IN OUT THUNK_CONTEXT *ThunkContext
+ );
+
+#else
+
+#endif
+
+#endif
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 19:56:14 +0000