mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-26 16:47:40 +01:00
185 lines
6.4 KiB
C
185 lines
6.4 KiB
C
/** @file
|
|
EBC VM Test protocol for test purposes.
|
|
|
|
Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#ifndef _EBC_VM_TEST_PROTOCOL_H_
|
|
#define _EBC_VM_TEST_PROTOCOL_H_
|
|
|
|
//
|
|
// Define a protocol for an EBC VM test interface.
|
|
//
|
|
#define EFI_EBC_VM_TEST_PROTOCOL_GUID \
|
|
{ \
|
|
0xAAEACCFD, 0xF27B, 0x4C17, { 0xB6, 0x10, 0x75, 0xCA, 0x1F, 0x2D, 0xFB, 0x52 } \
|
|
}
|
|
|
|
//
|
|
// Define for forward reference.
|
|
//
|
|
typedef struct _EFI_EBC_VM_TEST_PROTOCOL EFI_EBC_VM_TEST_PROTOCOL;
|
|
|
|
//
|
|
// VM major/minor version
|
|
//
|
|
#define VM_MAJOR_VERSION 1
|
|
#define VM_MINOR_VERSION 0
|
|
|
|
//
|
|
// Bits in the VM->StopFlags field
|
|
//
|
|
#define STOPFLAG_APP_DONE 0x0001
|
|
#define STOPFLAG_BREAKPOINT 0x0002
|
|
#define STOPFLAG_INVALID_BREAK 0x0004
|
|
#define STOPFLAG_BREAK_ON_CALLEX 0x0008
|
|
|
|
//
|
|
// Masks for working with the VM flags register
|
|
//
|
|
#define VMFLAGS_CC 0x0001 // condition flag
|
|
#define VMFLAGS_STEP 0x0002 // step instruction mode
|
|
#define VMFLAGS_ALL_VALID (VMFLAGS_CC | VMFLAGS_STEP)
|
|
|
|
//
|
|
// Macros for operating on the VM flags register
|
|
//
|
|
#define VMFLAG_SET(pVM, Flag) (pVM->Flags |= (Flag))
|
|
#define VMFLAG_ISSET(pVM, Flag) ((pVM->Flags & (Flag)) ? 1 : 0)
|
|
#define VMFLAG_CLEAR(pVM, Flag) (pVM->Flags &= ~(Flag))
|
|
|
|
//
|
|
// Define a macro to get the operand. Then we can change it to be either a
|
|
// direct read or have it call a function to read memory.
|
|
//
|
|
#define GETOPERANDS(pVM) (UINT8) (*(UINT8 *) (pVM->Ip + 1))
|
|
#define GETOPCODE(pVM) (UINT8) (*(UINT8 *) pVM->Ip)
|
|
|
|
//
|
|
// Macros for operating on the VM GP registers
|
|
//
|
|
#define OPERAND1_REGDATA(pVM, Op) pVM->Gpr[OPERAND1_REGNUM (Op)]
|
|
#define OPERAND2_REGDATA(pVM, Op) pVM->Gpr[OPERAND2_REGNUM (Op)]
|
|
|
|
//
|
|
// Bits of exception flags field of VM context
|
|
//
|
|
#define EXCEPTION_FLAG_FATAL 0x80000000 // can't continue
|
|
#define EXCEPTION_FLAG_ERROR 0x40000000 // bad, but try to continue
|
|
#define EXCEPTION_FLAG_WARNING 0x20000000 // harmless problem
|
|
#define EXCEPTION_FLAG_NONE 0x00000000 // for normal return
|
|
|
|
///
|
|
/// instruction pointer for the VM
|
|
///
|
|
typedef UINT8 *VMIP;
|
|
|
|
typedef INT64 VM_REGISTER;
|
|
typedef UINT32 EXCEPTION_FLAGS;
|
|
|
|
typedef struct {
|
|
VM_REGISTER Gpr[8]; ///< General purpose registers.
|
|
///< Flags register:
|
|
///< 0 Set to 1 if the result of the last compare was true
|
|
///< 1 Set to 1 if stepping
|
|
UINT64 Flags; ///< 2..63 Reserved.
|
|
VMIP Ip; ///< Instruction pointer.
|
|
UINTN LastException;
|
|
EXCEPTION_FLAGS ExceptionFlags; ///< to keep track of exceptions
|
|
UINT32 StopFlags;
|
|
UINT32 CompilerVersion; ///< via break(6)
|
|
UINTN HighStackBottom; ///< bottom of the upper stack
|
|
UINTN LowStackTop; ///< top of the lower stack
|
|
UINT64 StackRetAddr; ///< location of final return address on stack
|
|
UINTN *StackMagicPtr; ///< pointer to magic value on stack to detect corruption
|
|
EFI_HANDLE ImageHandle; ///< for this EBC driver
|
|
EFI_SYSTEM_TABLE *SystemTable; ///< for debugging only
|
|
UINTN LastAddrConverted; ///< for debug
|
|
UINTN LastAddrConvertedValue; ///< for debug
|
|
VOID *FramePtr;
|
|
VOID *EntryPoint; ///< entry point of EBC image
|
|
UINTN ImageBase;
|
|
VOID *StackPool;
|
|
VOID *StackTop;
|
|
} VM_CONTEXT;
|
|
|
|
/**
|
|
Given a pointer to a new VM context, execute one or more instructions. This
|
|
function is only used for test purposes.
|
|
|
|
@param[in] This A pointer to the EFI_EBC_VM_TEST_PROTOCOL structure.
|
|
@param[in] VmPtr A pointer to a VM context.
|
|
@param[in, out] InstructionCount A pointer to a UINTN value holding the number of
|
|
instructions to execute. If it holds value of 0,
|
|
then the instruction to be executed is 1.
|
|
|
|
@retval EFI_UNSUPPORTED At least one of the opcodes is not supported.
|
|
@retval EFI_SUCCESS All of the instructions are executed successfully.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EBC_VM_TEST_EXECUTE) (
|
|
IN EFI_EBC_VM_TEST_PROTOCOL *This,
|
|
IN VM_CONTEXT *VmPtr,
|
|
IN OUT UINTN *InstructionCount
|
|
);
|
|
|
|
/**
|
|
Convert AsmText to the instruction. This function is only used for test purposes.
|
|
|
|
@param[in] This A pointer to the EFI_EBC_VM_TEST_PROTOCOL structure.
|
|
@param[in] AsmText A pointer to EBC ASM text code.
|
|
@param[out] Buffer Buffer to store the instruction.
|
|
@param[out] BufferLen Size of buffer that is required to store data.
|
|
|
|
@retval EFI_UNSUPPORTED This functionality is unsupported.
|
|
@retval EFI_SUCCESS Successfully convert AsmText to the instruction.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EBC_VM_TEST_ASM) (
|
|
IN EFI_EBC_VM_TEST_PROTOCOL *This,
|
|
IN CHAR16 *AsmText,
|
|
IN OUT INT8 *Buffer,
|
|
IN OUT UINTN *BufferLen
|
|
);
|
|
|
|
/**
|
|
Dump the executed instruction. This function is only used for test purposes.
|
|
|
|
@param[in] This A pointer to the EFI_EBC_VM_TEST_PROTOCOL structure.
|
|
@param[out] AsmText Contain the disasm text.
|
|
@param[out] Buffer Buffer to store the instruction.
|
|
@param[out] BufferLen Size of buffer that is required to store data.
|
|
|
|
@retval EFI_UNSUPPORTED This functionality is unsupported.
|
|
@retval EFI_SUCCESS Successfully dump the executed instruction.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EBC_VM_TEST_DASM) (
|
|
IN EFI_EBC_VM_TEST_PROTOCOL *This,
|
|
IN OUT CHAR16 *AsmText,
|
|
IN OUT INT8 *Buffer,
|
|
IN OUT UINTN *Len
|
|
);
|
|
|
|
//
|
|
// Prototype for the actual EBC test protocol interface
|
|
//
|
|
struct _EFI_EBC_VM_TEST_PROTOCOL {
|
|
EBC_VM_TEST_EXECUTE Execute;
|
|
EBC_VM_TEST_ASM Assemble;
|
|
EBC_VM_TEST_DASM Disassemble;
|
|
};
|
|
|
|
extern EFI_GUID gEfiEbcVmTestProtocolGuid;
|
|
|
|
#endif
|