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[x64/Linux] Return __m128i by value in xmm0 rather than a pointer

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This commit is contained in:
Herman S.
2025-10-15 10:49:17 +09:00
parent 2abf91603e
commit 0921a4fb04
1 changed files with 13 additions and 1 deletions
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14
src/xenia/cpu/backend/x64/x64_sequences.cc
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@@ -2855,12 +2855,24 @@ struct SHL_V128 : Sequence<SHL_V128, I<OPCODE_SHL, V128Op, V128Op, I8Op>> {
auto src1 = GetInputRegOrConstant(e, i.src1, e.xmm3);
#if XE_PLATFORM_WIN32
// Windows x64 ABI: __m128i is passed by implicit pointer
e.lea(e.GetNativeParam(0), e.StashXmm(0, src1));
if (i.src2.is_constant) {
e.mov(e.GetNativeParam(1), i.src2.constant());
} else {
// Zero-extend the 8-bit register to avoid garbage in upper bits
e.movzx(e.GetNativeParam(1).cvt32(), i.src2);
}
#else
// Linux/Mac System V ABI: __m128i passed in xmm0, return in xmm0
e.vmovaps(e.xmm0, src1);
if (i.src2.is_constant) {
e.mov(e.GetNativeParam(1), i.src2.constant());
} else {
e.mov(e.GetNativeParam(1), i.src2);
}
e.lea(e.GetNativeParam(0), e.StashXmm(0, src1));
#endif
e.CallNativeSafe(reinterpret_cast<void*>(EmulateShlV128));
e.vmovaps(i.dest, e.xmm0);
}