x64dbg
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zydis
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Minor bugfixes and cosmetical changes

This commit is contained in:
flobernd 2017-04-12 21:00:46 +02:00
parent ebf71d632f
commit 71a6d786d7
2 changed files with 31 additions and 34 deletions
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11
include/Zydis/Decoder.h
View File

@ -73,9 +73,8 @@ enum ZydisDecodeGranularities
*
* @return A zydis status code.
*/
ZYDIS_EXPORT ZydisStatus ZydisDecode(ZydisOperatingMode operatingMode,
const void* buffer, size_t bufferLen, uint64_t instructionPointer,
ZydisInstructionInfo* info);
ZYDIS_EXPORT ZydisStatus ZydisDecode(ZydisOperatingMode operatingMode, const void* buffer,
size_t bufferLen, uint64_t instructionPointer, ZydisInstructionInfo* info);
/**
* @brief Decodes the instruction in the given input @c buffer.
@ -90,9 +89,9 @@ ZYDIS_EXPORT ZydisStatus ZydisDecode(ZydisOperatingMode operatingMode,
*
* @return A zydis status code.
*/
ZYDIS_EXPORT ZydisStatus ZydisDecodeEx(ZydisOperatingMode operatingMode,
const void* buffer, size_t bufferLen, uint64_t instructionPointer,
ZydisDecodeGranularity granularity, ZydisInstructionInfo* info);
ZYDIS_EXPORT ZydisStatus ZydisDecodeEx(ZydisOperatingMode operatingMode, const void* buffer,
size_t bufferLen, uint64_t instructionPointer, ZydisDecodeGranularity granularity,
ZydisInstructionInfo* info);
/* ============================================================================================== */

54
src/Decoder.c
View File

@ -1575,8 +1575,8 @@ static ZydisStatus ZydisDecodeOperand(ZydisDecoderContext* ctx, ZydisInstruction
*
* @return A zydis status code.
*/
static ZydisStatus ZydisDecodeOperands(ZydisDecoderContext* ctx,
ZydisInstructionInfo* info, const ZydisOperandDefinition* operands, uint8_t operandCount)
static ZydisStatus ZydisDecodeOperands(ZydisDecoderContext* ctx, ZydisInstructionInfo* info,
const ZydisOperandDefinition* operands, uint8_t operandCount)
{
ZYDIS_ASSERT(ctx);
ZYDIS_ASSERT(info);
@ -1663,8 +1663,7 @@ static ZydisStatus ZydisDecodeOperands(ZydisDecoderContext* ctx,
* @param ctx A pointer to the @c ZydisDecoderContext instance.
* @param info A pointer to the @c ZydisInstructionInfo struct.
*/
static void ZydisApplyInstructionDefinition(ZydisDecoderContext* ctx,
ZydisInstructionInfo* info)
static void ZydisApplyInstructionDefinition(ZydisDecoderContext* ctx, ZydisInstructionInfo* info)
{
ZYDIS_ASSERT(info);
ZYDIS_ASSERT(ctx->definition);
@ -1836,15 +1835,15 @@ static ZydisStatus ZydisNodeHandlerOpcode(ZydisDecoderContext* ctx,
case 0xC5:
// Decode vex-prefix
info->encoding = ZYDIS_INSTRUCTION_ENCODING_VEX;
ZYDIS_CHECK(
ZydisDecodeVEX(ctx, info, info->opcode, prefixBytes[0], prefixBytes[1]));
ZYDIS_CHECK(ZydisDecodeVEX(
ctx, info, info->opcode, prefixBytes[0], prefixBytes[1]));
info->opcodeMap = info->details.vex.m_mmmm;
break;
case 0x62:
// Decode evex-prefix
info->encoding = ZYDIS_INSTRUCTION_ENCODING_EVEX;
ZYDIS_CHECK(
ZydisDecodeEVEX(ctx, info, prefixBytes[0], prefixBytes[1], prefixBytes[2]));
ZYDIS_CHECK(ZydisDecodeEVEX(
ctx, info, prefixBytes[0], prefixBytes[1], prefixBytes[2]));
info->opcodeMap = info->details.evex.mm;
break;
default:
@ -1945,8 +1944,7 @@ static ZydisStatus ZydisNodeHandlerXop(ZydisInstructionInfo* info, uint16_t* ind
return ZYDIS_STATUS_SUCCESS;
}
static ZydisStatus ZydisNodeHandlerMode(ZydisDecoderContext* ctx,
uint16_t* index)
static ZydisStatus ZydisNodeHandlerMode(ZydisDecoderContext* ctx, uint16_t* index)
{
ZYDIS_ASSERT(ctx);
ZYDIS_ASSERT(index);
@ -1979,8 +1977,7 @@ static ZydisStatus ZydisNodeHandlerVex(ZydisInstructionInfo* info, uint16_t* ind
return ZYDIS_STATUS_SUCCESS;
}
static ZydisStatus ZydisNodeHandlerMandatoryPrefix(ZydisDecoderContext* ctx,
uint16_t* index)
static ZydisStatus ZydisNodeHandlerMandatoryPrefix(ZydisDecoderContext* ctx, uint16_t* index)
{
ZYDIS_ASSERT(index);
@ -2061,7 +2058,7 @@ static ZydisStatus ZydisNodeHandlerModrmRm(ZydisDecoderContext* decoder,
return ZYDIS_STATUS_SUCCESS;
}
static ZydisStatus ZydisNodeHandlerOperandSize(ZydisDecoderContext* ctx,
static ZydisStatus ZydisNodeHandlerOperandSize(ZydisDecoderContext* ctx,
ZydisInstructionInfo* info, uint16_t* index)
{
ZYDIS_ASSERT(ctx);
@ -2090,7 +2087,7 @@ static ZydisStatus ZydisNodeHandlerOperandSize(ZydisDecoderContext* ctx,
return ZYDIS_STATUS_SUCCESS;
}
static ZydisStatus ZydisNodeHandlerAddressSize(ZydisDecoderContext* ctx,
static ZydisStatus ZydisNodeHandlerAddressSize(ZydisDecoderContext* ctx,
ZydisInstructionInfo* info, uint16_t* index)
{
ZYDIS_ASSERT(ctx);
@ -2120,8 +2117,8 @@ static ZydisStatus ZydisNodeHandlerAddressSize(ZydisDecoderContext* ctx,
return ZYDIS_STATUS_SUCCESS;
}
static ZydisStatus ZydisNodeHandlerRexW(ZydisDecoderContext* ctx,
ZydisInstructionInfo* info, uint16_t* index)
static ZydisStatus ZydisNodeHandlerRexW(ZydisDecoderContext* ctx, ZydisInstructionInfo* info,
uint16_t* index)
{
ZYDIS_ASSERT(info);
ZYDIS_ASSERT(index);
@ -2147,8 +2144,8 @@ static ZydisStatus ZydisNodeHandlerRexW(ZydisDecoderContext* ctx,
return ZYDIS_STATUS_SUCCESS;
}
static ZydisStatus ZydisNodeHandlerVexL(ZydisDecoderContext* ctx,
ZydisInstructionInfo* info, uint16_t* index)
static ZydisStatus ZydisNodeHandlerVexL(ZydisDecoderContext* ctx, ZydisInstructionInfo* info,
uint16_t* index)
{
ZYDIS_ASSERT(info);
ZYDIS_ASSERT(index);
@ -2202,8 +2199,7 @@ static ZydisStatus ZydisNodeHandlerEvexB(ZydisInstructionInfo* info, uint16_t* i
*
* @return A zydis decoder status code.
*/
static ZydisStatus ZydisDecodeOpcode(ZydisDecoderContext* ctx,
ZydisInstructionInfo* info)
static ZydisStatus ZydisDecodeOpcode(ZydisDecoderContext* ctx, ZydisInstructionInfo* info)
{
ZYDIS_ASSERT(ctx);
ZYDIS_ASSERT(info);
@ -2350,18 +2346,16 @@ static ZydisStatus ZydisDecodeOpcode(ZydisDecoderContext* ctx,
/* Exported functions */
/* ============================================================================================== */
ZydisStatus ZydisDecode(ZydisOperatingMode operatingMode,
const void* buffer, size_t bufferLen, uint64_t instructionPointer,
ZydisInstructionInfo* info)
ZydisStatus ZydisDecode(ZydisOperatingMode operatingMode, const void* buffer, size_t bufferLen,
uint64_t instructionPointer, ZydisInstructionInfo* info)
{
return ZydisDecodeEx(
operatingMode, buffer, bufferLen, instructionPointer,
ZYDIS_DECODE_GRANULARITY_DEFAULT, info);
}
ZydisStatus ZydisDecodeEx(ZydisOperatingMode operatingMode,
const void* buffer, size_t bufferLen, uint64_t instructionPointer,
ZydisDecodeGranularity granularity, ZydisInstructionInfo* info)
ZydisStatus ZydisDecodeEx(ZydisOperatingMode operatingMode, const void* buffer, size_t bufferLen,
uint64_t instructionPointer, ZydisDecodeGranularity granularity, ZydisInstructionInfo* info)
{
if ((operatingMode != ZYDIS_DISASSEMBLER_MODE_16BIT) &&
(operatingMode != ZYDIS_DISASSEMBLER_MODE_32BIT) &&
@ -2376,8 +2370,13 @@ ZydisStatus ZydisDecodeEx(ZydisOperatingMode operatingMode,
}
ZydisDecoderContext ctx;
memset(&ctx.internal, 0, sizeof(ctx.internal));
ctx.operatingMode = operatingMode;
ctx.granularity = granularity;
if (granularity == ZYDIS_DECODE_GRANULARITY_DEFAULT)
{
ctx.granularity = ZYDIS_DECODE_GRANULARITY_FULL;
}
ctx.input.buffer = (uint8_t*)buffer;
ctx.input.bufferLen = bufferLen;
ctx.hasUnusedPrefix66 = 0;
@ -2399,8 +2398,7 @@ ZydisStatus ZydisDecodeEx(ZydisOperatingMode operatingMode,
// Set AVX-512 info
if (info->encoding == ZYDIS_INSTRUCTION_ENCODING_EVEX)
{
const ZydisInstructionDefinition* definition =
(ZydisInstructionDefinition*)ctx.definition;
const ZydisInstructionDefinition* definition = (ZydisInstructionDefinition*)ctx.definition;
switch (definition->evexContext)
{