#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "X86DisassemblerDecoder.h"
#include "X86GenDisassemblerTables.inc"

Include dependency graph for X86DisassemblerDecoder.c:

Macros
#define	TRUE 1

#define	FALSE 0

#define	debug(s) do { x86DisassemblerDebug(__FILE__, __LINE__, s); } while (0)

#define	CONSUME_FUNC(name, type)

#define	GENERIC_FIXUP_FUNC(name, base, prefix)

Functions
static InstructionContext	contextForAttrs (uint8_t attrMask)

static int	modRMRequired (OpcodeType type, InstructionContext insnContext, uint8_t opcode)

static InstrUID	decode (OpcodeType type, InstructionContext insnContext, uint8_t opcode, uint8_t modRM)

static const struct InstructionSpecifier *	specifierForUID (InstrUID uid)

static int	consumeByte (struct InternalInstruction insn, uint8_t byte)

static int	lookAtByte (struct InternalInstruction insn, uint8_t byte)

static void	unconsumeByte (struct InternalInstruction *insn)

static void	dbgprintf (struct InternalInstruction insn, const char format,...)

static void	setPrefixPresent (struct InternalInstruction *insn, uint8_t prefix, uint64_t location)

static BOOL	isPrefixAtLocation (struct InternalInstruction *insn, uint8_t prefix, uint64_t location)

static int	readPrefixes (struct InternalInstruction *insn)

static int	readOpcode (struct InternalInstruction *insn)

static int	readModRM (struct InternalInstruction *insn)

static int	getIDWithAttrMask (uint16_t instructionID, struct InternalInstruction insn, uint8_t attrMask)

static BOOL	is16BitEquivalent (const char orig, const char equiv)

static int	getID (struct InternalInstruction insn, const void miiArg)

static int	readSIB (struct InternalInstruction *insn)

static int	readDisplacement (struct InternalInstruction *insn)

static int	fixupReg (struct InternalInstruction insn, const struct OperandSpecifier op)

static int	readOpcodeModifier (struct InternalInstruction *insn)

static int	readOpcodeRegister (struct InternalInstruction *insn, uint8_t size)

static int	readImmediate (struct InternalInstruction *insn, uint8_t size)

static int	readVVVV (struct InternalInstruction *insn)

static int	readOperands (struct InternalInstruction *insn)

int	decodeInstruction (struct InternalInstruction insn, byteReader_t reader, const void readerArg, dlog_t logger, void loggerArg, const void miiArg, uint64_t startLoc, DisassemblerMode mode)

Macro Definition Documentation

#define CONSUME_FUNC	(	name,
		type
	)

Value:

static int name(struct InternalInstruction* insn, type* ptr) {  \
    type combined = 0;                                            \
    unsigned offset;                                              \
    for (offset = 0; offset < sizeof(type); ++offset) {           \
      uint8_t byte;                                               \
      int ret = insn->reader(insn->readerArg,                     \
                             &byte,                               \
                             insn->readerCursor + offset);        \
      if (ret)                                                    \
        return ret;                                               \
      combined = combined | ((uint64_t)byte << (offset * 8));     \
    }                                                             \
    *ptr = combined;                                              \
    insn->readerCursor += sizeof(type);                           \
    return 0;                                                     \
  }

Definition at line 212 of file X86DisassemblerDecoder.c.

#define debug ( s ) do { x86DisassemblerDebug(__FILE__, __LINE__, s); } while (0)

Definition at line 29 of file X86DisassemblerDecoder.c.

Referenced by decode(), fixupReg(), readImmediate(), readOpcodeModifier(), readPrefixes(), and readSIB().

#define FALSE 0

Definition at line 26 of file X86DisassemblerDecoder.c.

Referenced by is16BitEquivalent(), isPrefixAtLocation(), readDisplacement(), and readPrefixes().

#define GENERIC_FIXUP_FUNC	(	name,
		base,
		prefix
	)

Definition at line 1280 of file X86DisassemblerDecoder.c.

#define TRUE 1

Definition at line 25 of file X86DisassemblerDecoder.c.

Referenced by is16BitEquivalent(), isPrefixAtLocation(), readDisplacement(), readModRM(), readOpcodeModifier(), readPrefixes(), and readSIB().

Function Documentation

static int consumeByte	(	struct InternalInstruction *	insn,
		uint8_t *	byte
	)

static

Definition at line 188 of file X86DisassemblerDecoder.c.

References InternalInstruction::reader, InternalInstruction::readerArg, and InternalInstruction::readerCursor.

Referenced by readImmediate(), readModRM(), readOpcode(), readPrefixes(), and readSIB().

static InstructionContext contextForAttrs ( uint8_t attrMask )

static

Definition at line 43 of file X86DisassemblerDecoder.c.

References CONTEXTS_SYM.

Referenced by getIDWithAttrMask().

static void dbgprintf	(	struct InternalInstruction *	insn,
		const char *	format,
			...
	)

static

Definition at line 255 of file X86DisassemblerDecoder.c.

References llvm::format(), and llvm::LibFunc::vsnprintf.

Referenced by decodeInstruction(), fixupReg(), getID(), readDisplacement(), readImmediate(), readModRM(), readOpcode(), readOpcodeModifier(), readOpcodeRegister(), readOperands(), readPrefixes(), readSIB(), and readVVVV().

static InstrUID decode	(	OpcodeType	type,
		InstructionContext	insnContext,
		uint8_t	opcode,
		uint8_t	modRM
	)

static

Definition at line 107 of file X86DisassemblerDecoder.c.

References debug, modFromModRM, ModRMDecision::modrm_type, ONEBYTE, ONEBYTE_SYM, THREEBYTE38_SYM, THREEBYTE3A_SYM, THREEBYTE_38, THREEBYTE_3A, THREEBYTE_A6, THREEBYTE_A7, THREEBYTEA6_SYM, THREEBYTEA7_SYM, TWOBYTE, TWOBYTE_SYM, XOP8_MAP, XOP8_MAP_SYM, XOP9_MAP, XOP9_MAP_SYM, XOPA_MAP, and XOPA_MAP_SYM.

Referenced by getIDWithAttrMask().

int decodeInstruction	(	struct InternalInstruction *	insn,
		byteReader_t	reader,
		const void *	readerArg,
		dlog_t	logger,
		void *	loggerArg,
		const void *	miiArg,
		uint64_t	startLoc,
		DisassemblerMode	mode
	)