[winasan] Reduce hotpatch prefix check to 8 bytes
Same idea as r310419: The 8 byte nop is a suffix of the 9 byte nop, and we need at most 6 bytes.
@@ -223,8 +223,8 @@ static bool IsMemoryPadding(uptr address, uptr size) {
return true;
}
-static const u8 kHintNop9Bytes[] = {
- 0x66, 0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00
+static const u8 kHintNop8Bytes[] = {
+ 0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00
};
template<class T>
@@ -239,8 +239,8 @@ static bool FunctionHasPrefix(uptr address, const T &pattern) {
static bool FunctionHasPadding(uptr address, uptr size) {
if (IsMemoryPadding(address - size, size))
return true;
- if (size <= sizeof(kHintNop9Bytes) &&
- FunctionHasPrefix(address, kHintNop9Bytes))
+ if (size <= sizeof(kHintNop8Bytes) &&
+ FunctionHasPrefix(address, kHintNop8Bytes))
return true;
return false;
}
