X86DisassemblerDecoder.h [plain text]
#ifndef X86DISASSEMBLERDECODER_H
#define X86DISASSEMBLERDECODER_H
#ifdef __cplusplus
extern "C" {
#endif
#define INSTRUCTION_SPECIFIER_FIELDS \
const char* name;
#define INSTRUCTION_IDS \
InstrUID* instructionIDs;
#include "X86DisassemblerDecoderCommon.h"
#undef INSTRUCTION_SPECIFIER_FIELDS
#undef INSTRUCTION_IDS
#define modFromModRM(modRM) ((modRM & 0xc0) >> 6)
#define regFromModRM(modRM) ((modRM & 0x38) >> 3)
#define rmFromModRM(modRM) (modRM & 0x7)
#define scaleFromSIB(sib) ((sib & 0xc0) >> 6)
#define indexFromSIB(sib) ((sib & 0x38) >> 3)
#define baseFromSIB(sib) (sib & 0x7)
#define wFromREX(rex) ((rex & 0x8) >> 3)
#define rFromREX(rex) ((rex & 0x4) >> 2)
#define xFromREX(rex) ((rex & 0x2) >> 1)
#define bFromREX(rex) (rex & 0x1)
#define REGS_8BIT \
ENTRY(AL) \
ENTRY(CL) \
ENTRY(DL) \
ENTRY(BL) \
ENTRY(AH) \
ENTRY(CH) \
ENTRY(DH) \
ENTRY(BH) \
ENTRY(R8B) \
ENTRY(R9B) \
ENTRY(R10B) \
ENTRY(R11B) \
ENTRY(R12B) \
ENTRY(R13B) \
ENTRY(R14B) \
ENTRY(R15B) \
ENTRY(SPL) \
ENTRY(BPL) \
ENTRY(SIL) \
ENTRY(DIL)
#define EA_BASES_16BIT \
ENTRY(BX_SI) \
ENTRY(BX_DI) \
ENTRY(BP_SI) \
ENTRY(BP_DI) \
ENTRY(SI) \
ENTRY(DI) \
ENTRY(BP) \
ENTRY(BX) \
ENTRY(R8W) \
ENTRY(R9W) \
ENTRY(R10W) \
ENTRY(R11W) \
ENTRY(R12W) \
ENTRY(R13W) \
ENTRY(R14W) \
ENTRY(R15W)
#define REGS_16BIT \
ENTRY(AX) \
ENTRY(CX) \
ENTRY(DX) \
ENTRY(BX) \
ENTRY(SP) \
ENTRY(BP) \
ENTRY(SI) \
ENTRY(DI) \
ENTRY(R8W) \
ENTRY(R9W) \
ENTRY(R10W) \
ENTRY(R11W) \
ENTRY(R12W) \
ENTRY(R13W) \
ENTRY(R14W) \
ENTRY(R15W)
#define EA_BASES_32BIT \
ENTRY(EAX) \
ENTRY(ECX) \
ENTRY(EDX) \
ENTRY(EBX) \
ENTRY(sib) \
ENTRY(EBP) \
ENTRY(ESI) \
ENTRY(EDI) \
ENTRY(R8D) \
ENTRY(R9D) \
ENTRY(R10D) \
ENTRY(R11D) \
ENTRY(R12D) \
ENTRY(R13D) \
ENTRY(R14D) \
ENTRY(R15D)
#define REGS_32BIT \
ENTRY(EAX) \
ENTRY(ECX) \
ENTRY(EDX) \
ENTRY(EBX) \
ENTRY(ESP) \
ENTRY(EBP) \
ENTRY(ESI) \
ENTRY(EDI) \
ENTRY(R8D) \
ENTRY(R9D) \
ENTRY(R10D) \
ENTRY(R11D) \
ENTRY(R12D) \
ENTRY(R13D) \
ENTRY(R14D) \
ENTRY(R15D)
#define EA_BASES_64BIT \
ENTRY(RAX) \
ENTRY(RCX) \
ENTRY(RDX) \
ENTRY(RBX) \
ENTRY(sib64) \
ENTRY(RBP) \
ENTRY(RSI) \
ENTRY(RDI) \
ENTRY(R8) \
ENTRY(R9) \
ENTRY(R10) \
ENTRY(R11) \
ENTRY(R12) \
ENTRY(R13) \
ENTRY(R14) \
ENTRY(R15)
#define REGS_64BIT \
ENTRY(RAX) \
ENTRY(RCX) \
ENTRY(RDX) \
ENTRY(RBX) \
ENTRY(RSP) \
ENTRY(RBP) \
ENTRY(RSI) \
ENTRY(RDI) \
ENTRY(R8) \
ENTRY(R9) \
ENTRY(R10) \
ENTRY(R11) \
ENTRY(R12) \
ENTRY(R13) \
ENTRY(R14) \
ENTRY(R15)
#define REGS_MMX \
ENTRY(MM0) \
ENTRY(MM1) \
ENTRY(MM2) \
ENTRY(MM3) \
ENTRY(MM4) \
ENTRY(MM5) \
ENTRY(MM6) \
ENTRY(MM7)
#define REGS_XMM \
ENTRY(XMM0) \
ENTRY(XMM1) \
ENTRY(XMM2) \
ENTRY(XMM3) \
ENTRY(XMM4) \
ENTRY(XMM5) \
ENTRY(XMM6) \
ENTRY(XMM7) \
ENTRY(XMM8) \
ENTRY(XMM9) \
ENTRY(XMM10) \
ENTRY(XMM11) \
ENTRY(XMM12) \
ENTRY(XMM13) \
ENTRY(XMM14) \
ENTRY(XMM15)
#define REGS_SEGMENT \
ENTRY(ES) \
ENTRY(CS) \
ENTRY(SS) \
ENTRY(DS) \
ENTRY(FS) \
ENTRY(GS)
#define REGS_DEBUG \
ENTRY(DR0) \
ENTRY(DR1) \
ENTRY(DR2) \
ENTRY(DR3) \
ENTRY(DR4) \
ENTRY(DR5) \
ENTRY(DR6) \
ENTRY(DR7)
#define REGS_CONTROL_32BIT \
ENTRY(ECR0) \
ENTRY(ECR1) \
ENTRY(ECR2) \
ENTRY(ECR3) \
ENTRY(ECR4) \
ENTRY(ECR5) \
ENTRY(ECR6) \
ENTRY(ECR7)
#define REGS_CONTROL_64BIT \
ENTRY(RCR0) \
ENTRY(RCR1) \
ENTRY(RCR2) \
ENTRY(RCR3) \
ENTRY(RCR4) \
ENTRY(RCR5) \
ENTRY(RCR6) \
ENTRY(RCR7) \
ENTRY(RCR8)
#define ALL_EA_BASES \
EA_BASES_16BIT \
EA_BASES_32BIT \
EA_BASES_64BIT
#define ALL_SIB_BASES \
REGS_32BIT \
REGS_64BIT
#define ALL_REGS \
REGS_8BIT \
REGS_16BIT \
REGS_32BIT \
REGS_64BIT \
REGS_MMX \
REGS_XMM \
REGS_SEGMENT \
REGS_DEBUG \
REGS_CONTROL_32BIT \
REGS_CONTROL_64BIT \
ENTRY(RIP)
typedef enum {
EA_BASE_NONE,
#define ENTRY(x) EA_BASE_##x,
ALL_EA_BASES
#undef ENTRY
#define ENTRY(x) EA_REG_##x,
ALL_REGS
#undef ENTRY
EA_max
} EABase;
typedef enum {
SIB_INDEX_NONE,
#define ENTRY(x) SIB_INDEX_##x,
ALL_EA_BASES
#undef ENTRY
SIB_INDEX_max
} SIBIndex;
typedef enum {
SIB_BASE_NONE,
#define ENTRY(x) SIB_BASE_##x,
ALL_SIB_BASES
#undef ENTRY
SIB_BASE_max
} SIBBase;
typedef enum {
EA_DISP_NONE,
EA_DISP_8,
EA_DISP_16,
EA_DISP_32
} EADisplacement;
typedef enum {
#define ENTRY(x) MODRM_REG_##x,
ALL_REGS
#undef ENTRY
MODRM_REG_max
} Reg;
typedef enum {
SEG_OVERRIDE_NONE,
SEG_OVERRIDE_CS,
SEG_OVERRIDE_SS,
SEG_OVERRIDE_DS,
SEG_OVERRIDE_ES,
SEG_OVERRIDE_FS,
SEG_OVERRIDE_GS,
SEG_OVERRIDE_max
} SegmentOverride;
typedef uint8_t BOOL;
typedef int (*byteReader_t)(void* arg, uint8_t* byte, uint64_t address);
typedef void (*dlog_t)(void* arg, const char *log);
struct InternalInstruction {
byteReader_t reader;
void* readerArg;
uint64_t readerCursor;
dlog_t dlog;
void* dlogArg;
DisassemblerMode mode;
uint64_t startLocation;
size_t length;
uint8_t prefixPresent[0x100];
uint64_t prefixLocations[0x100];
uint8_t rexPrefix;
uint64_t rexLocation;
uint64_t necessaryPrefixLocation;
SegmentOverride segmentOverride;
uint8_t registerSize;
uint8_t addressSize;
uint8_t displacementSize;
uint8_t immediateSize;
uint8_t twoByteEscape;
uint8_t threeByteEscape;
uint8_t opcode;
uint8_t modRMExtension;
OpcodeType opcodeType;
uint16_t instructionID;
struct InstructionSpecifier* spec;
BOOL consumedModRM;
uint8_t modRM;
BOOL consumedSIB;
uint8_t sib;
BOOL consumedDisplacement;
int32_t displacement;
uint8_t numImmediatesConsumed;
uint8_t numImmediatesTranslated;
uint64_t immediates[2];
BOOL consumedOpcodeModifier;
uint8_t opcodeModifier;
Reg opcodeRegister;
EABase eaBaseBase;
EABase eaRegBase;
Reg regBase;
EABase eaBase;
EADisplacement eaDisplacement;
Reg reg;
SIBIndex sibIndex;
uint8_t sibScale;
SIBBase sibBase;
};
int decodeInstruction(struct InternalInstruction* insn,
byteReader_t reader,
void* readerArg,
dlog_t logger,
void* loggerArg,
uint64_t startLoc,
DisassemblerMode mode);
#ifdef __cplusplus
}
#endif
#endif