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Fixed decoding of VEX/EVEX instructions with high-register-specifiers

This commit is contained in:
flobernd 2017-04-25 17:46:02 +02:00
parent 40d6c39dbe
commit baa1bc243a
1 changed files with 3 additions and 2 deletions
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5
src/Decoder.c
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@ -1795,7 +1795,8 @@ static ZydisStatus ZydisNodeHandlerOpcode(ZydisDecoderContext* ctx,
{ {
uint8_t nextInput; uint8_t nextInput;
ZYDIS_CHECK(ZydisInputPeek(ctx, info, &nextInput)); ZYDIS_CHECK(ZydisInputPeek(ctx, info, &nextInput));
if ((nextInput & 0xF0) >= 0xC0) if (((nextInput & 0xF0) >= 0xC0) ||
(ctx->operatingMode == ZYDIS_OPERATING_MODE_64BIT))
{ {
if (info->attributes & ZYDIS_ATTRIB_HAS_REX) if (info->attributes & ZYDIS_ATTRIB_HAS_REX)
{ {
@ -1856,7 +1857,7 @@ static ZydisStatus ZydisNodeHandlerOpcode(ZydisDecoderContext* ctx,
{ {
uint8_t nextInput; uint8_t nextInput;
ZYDIS_CHECK(ZydisInputPeek(ctx, info, &nextInput)); ZYDIS_CHECK(ZydisInputPeek(ctx, info, &nextInput));
if (((nextInput >> 0) & 0x1F) >= 8) if ((nextInput & 0x1F) >= 8)
{ {
if (info->attributes & ZYDIS_ATTRIB_HAS_REX) if (info->attributes & ZYDIS_ATTRIB_HAS_REX)
{ {