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lizzie 2026-04-28 00:07:04 +00:00
parent 8b02cf1231
commit 6697b48981
1 changed files with 12 additions and 1 deletions
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13
src/dynarmic/src/dynarmic/common/spin_lock_x64.cpp
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@ -98,7 +98,18 @@ void EmitSpinLockLock(Xbyak::CodeGenerator& code, Xbyak::Address ptr, Xbyak::Reg
// ptr operand must be a dword[ptr]
void EmitSpinLockUnlock(Xbyak::CodeGenerator& code, Xbyak::Address ptr, Xbyak::Reg32 tmp) {
code.xor_(tmp, tmp);
code.xchg(ptr, tmp);
if (ptr.is64bitDisp()) {
// if tmp is on eax, use ebx, otherwise use eax!
auto const other_tmp = tmp.cvt32() == Xbyak::util::eax
? Xbyak::util::rbx
: Xbyak::util::rax;
code.push(other_tmp);
code.mov(other_tmp, ptr.getDisp());
/*code.lock();*/ code.xchg(code.dword[other_tmp], tmp);
code.pop(other_tmp);
} else {
/*code.lock();*/ code.xchg(ptr, tmp);
}
code.mfence();
}