diff options
| author | bxing <bxing@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-06-10 09:37:12 +0000 |
|---|---|---|
| committer | bxing <bxing@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-06-10 09:37:12 +0000 |
| commit | dee4740abe5925ff25e452c1a705a36f8fb3b4b9 (patch) | |
| tree | 805251d518c526abd4ab740292bcb208a6d7ff8b /MdePkg/Include | |
| parent | 4cbd21753299e5c119af283aa49443a47d7a72fb (diff) | |
| download | edk2-platforms-dee4740abe5925ff25e452c1a705a36f8fb3b4b9.tar.xz | |
1. Added AsmCpuidEx() to BaseLib
2. Added DecimalToBcd8() and BcdToDecimal8() to String.c
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@465 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Include')
| -rw-r--r-- | MdePkg/Include/Library/BaseLib.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h index e042ccb712..a63bc1bc3e 100644 --- a/MdePkg/Include/Library/BaseLib.h +++ b/MdePkg/Include/Library/BaseLib.h @@ -638,6 +638,45 @@ AsciiStrnCat ( IN UINTN Length
);
+/**
+ 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
+ );
+
//
// LIST_ENTRY definition
//
@@ -2995,6 +3034,49 @@ AsmCpuid ( );
/**
+ 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.
|