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zydis
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Fixed vector-length for EVEX instructions with fixed vector-length

This commit is contained in:
flobernd 2017-06-24 00:01:21 +02:00
parent b3d508850f
commit 0957a57ab4
1 changed files with 24 additions and 2 deletions
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26
src/Decoder.c
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@ -2248,6 +2248,29 @@ static void ZydisSetPrefixRelatedAttributes(ZydisDecoderContext* context,
* @param context A pointer to the @c ZydisDecoderContext struct. * @param context A pointer to the @c ZydisDecoderContext struct.
* @param info A pointer to the @c ZydisInstructionInfo struct. * @param info A pointer to the @c ZydisInstructionInfo struct.
* @param definition A pointer to the @c ZydisInstructionDefinition struct. * @param definition A pointer to the @c ZydisInstructionDefinition struct.
*
* Information set for XOP:
* - Vector Length
*
* Information set for VEX:
* - Vector length
* - Static broadcast-factor
*
* Information set for EVEX:
* - Vector length
* - Broadcast-factor (static and dynamic)
* - Rounding-mode and SAE
* - Mask mode
* - Compressed 8-bit displacement scale-factor
*
* Information set for MVEX:
* - Vector length
* - Broadcast-factor (static and dynamic)
* - Rounding-mode and SAE
* - Swizzle- and conversion-mode
* - Mask mode
* - Eviction hint
* - Compressed 8-bit displacement scale-factor
*/ */
static void ZydisSetAVXInformation(ZydisDecoderContext* context, static void ZydisSetAVXInformation(ZydisDecoderContext* context,
ZydisInstructionInfo* info, const ZydisInstructionDefinition* definition) ZydisInstructionInfo* info, const ZydisInstructionDefinition* definition)
@ -2324,7 +2347,6 @@ static void ZydisSetAVXInformation(ZydisDecoderContext* context,
{ {
vectorLength = def->vectorLength - 1; vectorLength = def->vectorLength - 1;
} }
// Vector length
static const ZydisVectorLength lookup[3] = static const ZydisVectorLength lookup[3] =
{ {
ZYDIS_VECTOR_LENGTH_128, ZYDIS_VECTOR_LENGTH_128,
@ -2332,7 +2354,7 @@ static void ZydisSetAVXInformation(ZydisDecoderContext* context,
ZYDIS_VECTOR_LENGTH_512 ZYDIS_VECTOR_LENGTH_512
}; };
ZYDIS_ASSERT(context->cache.LL < ZYDIS_ARRAY_SIZE(lookup)); ZYDIS_ASSERT(context->cache.LL < ZYDIS_ARRAY_SIZE(lookup));
info->avx.vectorLength = lookup[context->cache.LL]; info->avx.vectorLength = lookup[vectorLength];
context->evex.tupleType = def->tupleType; context->evex.tupleType = def->tupleType;
if (def->tupleType) if (def->tupleType)