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Allow rep to be in other places

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This commit is contained in:
offtkp 2025-06-08 21:55:06 +03:00
parent d19ce9b834
commit e2a69f74d1
1 changed files with 5 additions and 2 deletions
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7
src/core/cpu_patches.cpp
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@ -391,10 +391,13 @@ static void ReplaceMOVNT(void* address, u8 rep_prefix) {
// There can be any amount of prefixes but the instruction can't be more than 15 bytes
// And we know for sure this is a MOVNTSS/MOVNTSD
bool found = false;
bool rep_prefix_found = false;
int index = 0;
u8* ptr = reinterpret_cast<u8*>(address);
for (int i = 0; i < 15; i++) {
if (ptr[i] == 0x2B) {
if (ptr[i] == rep_prefix) {
rep_prefix_found = true;
} else if (ptr[i] == 0x2B) {
index = i;
found = true;
break;
@ -404,8 +407,8 @@ static void ReplaceMOVNT(void* address, u8 rep_prefix) {
// Some sanity checks
ASSERT(found);
ASSERT(index >= 2);
ASSERT(ptr[index - 2] == rep_prefix);
ASSERT(ptr[index - 1] == 0x0F);
ASSERT(rep_prefix_found);
// This turns the MOVNTSS/MOVNTSD to a MOVSS/MOVSD m, xmm
ptr[index] = 0x11;