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This commit is contained in:
lizzie 2026-05-15 21:27:48 +00:00
parent b327111077
commit fbc9029bc8
1 changed files with 9 additions and 4 deletions
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13
src/dynarmic/src/dynarmic/common/spin_lock_x64.cpp
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@ -40,10 +40,15 @@ void EmitSpinLockLock(Xbyak::CodeGenerator& code, Xbyak::Address ptr, Xbyak::Reg
// XBYAK BUG: code.umonitor(ptr); see issue #255
// replace once xbyak has been fixed
code.db(0xF3);
if (ptr.getIdx() >= 8) code.db(0x41);
code.db(0x0F); code.db(0xAE);
code.db(uint8_t((3 << 6) | ((6 & 7) << 3) | (ptr.getIdx() & 7)));
if (ptr.isREG()) {
code.db(0xF3);
if (ptr.getIdx() >= 8) code.db(0x41);
code.db(0x0F); code.db(0xAE);
code.db(uint8_t((3 << 6) | ((6 & 7) << 3) | (ptr.getIdx() & 7)));
} else {
code.mov(Xbyak::util::rax, ptr);
code.umonitor(Xbyak::util::rax);
}
// tmp.bit[0] = 0: C0.1 | Slow Wakup | Better Savings
// tmp.bit[0] = 1: C0.2 | Fast Wakup | Lesser Savings