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encode-test: Test all REX/VEX.RXB combinations

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This commit is contained in:
Alexis Engelke
2023-01-15 12:57:49 +01:00
parent 7b2a586449
commit 36c37186dd
3 changed files with 134 additions and 6 deletions
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7
encode.c
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@@ -67,9 +67,9 @@ unsigned
opc_size(uint64_t opc, uint64_t epfx)
{
unsigned res = 1;
if (opc & OPC_EVEXL0) {
if (UNLIKELY(opc & OPC_EVEXL0)) {
res += 4;
} else if (opc & OPC_VEXL0) {
} else if (UNLIKELY(opc & OPC_VEXL0)) {
if (opc & (OPC_REXW|0x20000) || epfx & (EPFX_REXX|EPFX_REXB))
res += 3;
else
@@ -77,8 +77,7 @@ opc_size(uint64_t opc, uint64_t epfx)
} else {
if (opc & OPC_LOCK) res++;
if (opc & OPC_66) res++;
if (opc & OPC_F2) res++;
if (opc & OPC_F3) res++;
if (opc & (OPC_F2|OPC_F3)) res++;
if (opc & OPC_REXW || epfx & EPFX_REX_MSK) res++;
if (opc & 0x30000) res++;
if (opc & 0x20000) res++;