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Diffstat (limited to 'Core/MdePkg/Include/Protocol/Ebc.h')
-rw-r--r-- | Core/MdePkg/Include/Protocol/Ebc.h | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/Core/MdePkg/Include/Protocol/Ebc.h b/Core/MdePkg/Include/Protocol/Ebc.h new file mode 100644 index 0000000000..0fcb82bce8 --- /dev/null +++ b/Core/MdePkg/Include/Protocol/Ebc.h @@ -0,0 +1,314 @@ +/** @file
+ Describes the protocol interface to the EBC interpreter.
+
+ Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+ 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 __EFI_EBC_PROTOCOL_H__
+#define __EFI_EBC_PROTOCOL_H__
+
+#define EFI_EBC_INTERPRETER_PROTOCOL_GUID \
+ { \
+ 0x13AC6DD1, 0x73D0, 0x11D4, {0xB0, 0x6B, 0x00, 0xAA, 0x00, 0xBD, 0x6D, 0xE7 } \
+ }
+
+//
+// Define OPCODES
+//
+#define OPCODE_BREAK 0x00
+#define OPCODE_JMP 0x01
+#define OPCODE_JMP8 0x02
+#define OPCODE_CALL 0x03
+#define OPCODE_RET 0x04
+#define OPCODE_CMPEQ 0x05
+#define OPCODE_CMPLTE 0x06
+#define OPCODE_CMPGTE 0x07
+#define OPCODE_CMPULTE 0x08
+#define OPCODE_CMPUGTE 0x09
+#define OPCODE_NOT 0x0A
+#define OPCODE_NEG 0x0B
+#define OPCODE_ADD 0x0C
+#define OPCODE_SUB 0x0D
+#define OPCODE_MUL 0x0E
+#define OPCODE_MULU 0x0F
+#define OPCODE_DIV 0x10
+#define OPCODE_DIVU 0x11
+#define OPCODE_MOD 0x12
+#define OPCODE_MODU 0x13
+#define OPCODE_AND 0x14
+#define OPCODE_OR 0x15
+#define OPCODE_XOR 0x16
+#define OPCODE_SHL 0x17
+#define OPCODE_SHR 0x18
+#define OPCODE_ASHR 0x19
+#define OPCODE_EXTNDB 0x1A
+#define OPCODE_EXTNDW 0x1B
+#define OPCODE_EXTNDD 0x1C
+#define OPCODE_MOVBW 0x1D
+#define OPCODE_MOVWW 0x1E
+#define OPCODE_MOVDW 0x1F
+#define OPCODE_MOVQW 0x20
+#define OPCODE_MOVBD 0x21
+#define OPCODE_MOVWD 0x22
+#define OPCODE_MOVDD 0x23
+#define OPCODE_MOVQD 0x24
+#define OPCODE_MOVSNW 0x25 // Move signed natural with word index
+#define OPCODE_MOVSND 0x26 // Move signed natural with dword index
+//
+// #define OPCODE_27 0x27
+//
+#define OPCODE_MOVQQ 0x28 // Does this go away?
+#define OPCODE_LOADSP 0x29
+#define OPCODE_STORESP 0x2A
+#define OPCODE_PUSH 0x2B
+#define OPCODE_POP 0x2C
+#define OPCODE_CMPIEQ 0x2D
+#define OPCODE_CMPILTE 0x2E
+#define OPCODE_CMPIGTE 0x2F
+#define OPCODE_CMPIULTE 0x30
+#define OPCODE_CMPIUGTE 0x31
+#define OPCODE_MOVNW 0x32
+#define OPCODE_MOVND 0x33
+//
+// #define OPCODE_34 0x34
+//
+#define OPCODE_PUSHN 0x35
+#define OPCODE_POPN 0x36
+#define OPCODE_MOVI 0x37
+#define OPCODE_MOVIN 0x38
+#define OPCODE_MOVREL 0x39
+
+//
+// Bit masks for opcode encodings
+//
+#define OPCODE_M_OPCODE 0x3F // bits of interest for first level decode
+#define OPCODE_M_IMMDATA 0x80
+#define OPCODE_M_IMMDATA64 0x40
+#define OPCODE_M_64BIT 0x40 // for CMP
+#define OPCODE_M_RELADDR 0x10 // for CALL instruction
+#define OPCODE_M_CMPI32_DATA 0x80 // for CMPI
+#define OPCODE_M_CMPI64 0x40 // for CMPI 32 or 64 bit comparison
+#define OPERAND_M_MOVIN_N 0x80
+#define OPERAND_M_CMPI_INDEX 0x10
+
+//
+// Masks for instructions that encode presence of indexes for operand1 and/or
+// operand2.
+//
+#define OPCODE_M_IMMED_OP1 0x80
+#define OPCODE_M_IMMED_OP2 0x40
+
+//
+// Bit masks for operand encodings
+//
+#define OPERAND_M_INDIRECT1 0x08
+#define OPERAND_M_INDIRECT2 0x80
+#define OPERAND_M_OP1 0x07
+#define OPERAND_M_OP2 0x70
+
+//
+// Masks for data manipulation instructions
+//
+#define DATAMANIP_M_64 0x40 // 64-bit width operation
+#define DATAMANIP_M_IMMDATA 0x80
+
+//
+// For MOV instructions, need a mask for the opcode when immediate
+// data applies to R2.
+//
+#define OPCODE_M_IMMED_OP2 0x40
+
+//
+// The MOVI/MOVIn instructions use bit 6 of operands byte to indicate
+// if an index is present. Then bits 4 and 5 are used to indicate the width
+// of the move.
+//
+#define MOVI_M_IMMDATA 0x40
+#define MOVI_M_DATAWIDTH 0xC0
+#define MOVI_DATAWIDTH16 0x40
+#define MOVI_DATAWIDTH32 0x80
+#define MOVI_DATAWIDTH64 0xC0
+#define MOVI_M_MOVEWIDTH 0x30
+#define MOVI_MOVEWIDTH8 0x00
+#define MOVI_MOVEWIDTH16 0x10
+#define MOVI_MOVEWIDTH32 0x20
+#define MOVI_MOVEWIDTH64 0x30
+
+//
+// Masks for CALL instruction encodings
+//
+#define OPERAND_M_RELATIVE_ADDR 0x10
+#define OPERAND_M_NATIVE_CALL 0x20
+
+//
+// Masks for decoding push/pop instructions
+//
+#define PUSHPOP_M_IMMDATA 0x80 // opcode bit indicating immediate data
+#define PUSHPOP_M_64 0x40 // opcode bit indicating 64-bit operation
+//
+// Mask for operand of JMP instruction
+//
+#define JMP_M_RELATIVE 0x10
+#define JMP_M_CONDITIONAL 0x80
+#define JMP_M_CS 0x40
+
+//
+// Macros to determine if a given operand is indirect
+//
+#define OPERAND1_INDIRECT(op) ((op) & OPERAND_M_INDIRECT1)
+#define OPERAND2_INDIRECT(op) ((op) & OPERAND_M_INDIRECT2)
+
+//
+// Macros to extract the operands from second byte of instructions
+//
+#define OPERAND1_REGNUM(op) ((op) & OPERAND_M_OP1)
+#define OPERAND2_REGNUM(op) (((op) & OPERAND_M_OP2) >> 4)
+
+#define OPERAND1_CHAR(op) ('0' + OPERAND1_REGNUM (op))
+#define OPERAND2_CHAR(op) ('0' + OPERAND2_REGNUM (op))
+
+//
+// Condition masks usually for byte 1 encodings of code
+//
+#define CONDITION_M_CONDITIONAL 0x80
+#define CONDITION_M_CS 0x40
+
+///
+/// Protocol Guid Name defined in spec.
+///
+#define EFI_EBC_PROTOCOL_GUID EFI_EBC_INTERPRETER_PROTOCOL_GUID
+
+///
+/// Define for forward reference.
+///
+typedef struct _EFI_EBC_PROTOCOL EFI_EBC_PROTOCOL;
+
+/**
+ Creates a thunk for an EBC entry point, returning the address of the thunk.
+
+ A PE32+ EBC image, like any other PE32+ image, contains an optional header that specifies the
+ entry point for image execution. However, for EBC images, this is the entry point of EBC
+ instructions, so is not directly executable by the native processor. Therefore, when an EBC image is
+ loaded, the loader must call this service to get a pointer to native code (thunk) that can be executed,
+ which will invoke the interpreter to begin execution at the original EBC entry point.
+
+ @param This A pointer to the EFI_EBC_PROTOCOL instance.
+ @param ImageHandle Handle of image for which the thunk is being created.
+ @param EbcEntryPoint Address of the actual EBC entry point or protocol service the thunk should call.
+ @param Thunk Returned pointer to a thunk created.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_INVALID_PARAMETER Image entry point is not 2-byte aligned.
+ @retval EFI_OUT_OF_RESOURCES Memory could not be allocated for the thunk.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_EBC_CREATE_THUNK)(
+ IN EFI_EBC_PROTOCOL *This,
+ IN EFI_HANDLE ImageHandle,
+ IN VOID *EbcEntryPoint,
+ OUT VOID **Thunk
+ );
+
+/**
+ Called prior to unloading an EBC image from memory.
+
+ This function is called after an EBC image has exited, but before the image is actually unloaded. It
+ is intended to provide the interpreter with the opportunity to perform any cleanup that may be
+ necessary as a result of loading and executing the image.
+
+ @param This A pointer to the EFI_EBC_PROTOCOL instance.
+ @param ImageHandle Image handle of the EBC image that is being unloaded from memory.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_INVALID_PARAMETER Image handle is not recognized as belonging
+ to an EBC image that has been executed.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_EBC_UNLOAD_IMAGE)(
+ IN EFI_EBC_PROTOCOL *This,
+ IN EFI_HANDLE ImageHandle
+ );
+
+/**
+ This is the prototype for the Flush callback routine. A pointer to a routine
+ of this type is passed to the EBC EFI_EBC_REGISTER_ICACHE_FLUSH protocol service.
+
+ @param Start The beginning physical address to flush from the processor's instruction cache.
+ @param Length The number of bytes to flush from the processor's instruction cache.
+
+ @retval EFI_SUCCESS The function completed successfully.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EBC_ICACHE_FLUSH)(
+ IN EFI_PHYSICAL_ADDRESS Start,
+ IN UINT64 Length
+ );
+
+/**
+ Registers a callback function that the EBC interpreter calls to flush
+ the processor instruction cache following creation of thunks.
+
+ @param This A pointer to the EFI_EBC_PROTOCOL instance.
+ @param Flush Pointer to a function of type EBC_ICACH_FLUSH.
+
+ @retval EFI_SUCCESS The function completed successfully.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_EBC_REGISTER_ICACHE_FLUSH)(
+ IN EFI_EBC_PROTOCOL *This,
+ IN EBC_ICACHE_FLUSH Flush
+ );
+
+/**
+ Called to get the version of the interpreter.
+
+ This function is called to get the version of the loaded EBC interpreter. The value and format of the
+ returned version is identical to that returned by the EBC BREAK 1 instruction.
+
+ @param This A pointer to the EFI_EBC_PROTOCOL instance.
+ @param Version Pointer to where to store the returned version of the interpreter.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_INVALID_PARAMETER Version pointer is NULL.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_EBC_GET_VERSION)(
+ IN EFI_EBC_PROTOCOL *This,
+ IN OUT UINT64 *Version
+ );
+
+///
+/// The EFI EBC protocol provides services to load and execute EBC images, which will typically be
+/// loaded into option ROMs. The image loader will load the EBC image, perform standard relocations,
+/// and invoke the CreateThunk() service to create a thunk for the EBC image's entry point. The
+/// image can then be run using the standard EFI start image services.
+///
+struct _EFI_EBC_PROTOCOL {
+ EFI_EBC_CREATE_THUNK CreateThunk;
+ EFI_EBC_UNLOAD_IMAGE UnloadImage;
+ EFI_EBC_REGISTER_ICACHE_FLUSH RegisterICacheFlush;
+ EFI_EBC_GET_VERSION GetVersion;
+};
+
+//
+// Extern the global EBC protocol GUID
+//
+extern EFI_GUID gEfiEbcProtocolGuid;
+
+#endif
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