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[dynarmic, MacroHLE] Fix crashes on W^X systems (#4090)

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should fix crashes on:
- NetBSD
- SELinux
- OpenBSD
- other W^X systems
- some person trying to be funny with W^X on their system even if they dont have to

perf impact should be minimal

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4090
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: Maufeat <sahyno1996@gmail.com>
This commit is contained in:
lizzie 2026-06-15 22:06:14 +02:00 • committed by crueter
parent b05463ee19
commit c8c61a12c3
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2 changed files with 6 additions and 0 deletions
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3
src/dynarmic/src/dynarmic/common/spin_lock_x64.cpp
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@ -90,6 +90,8 @@ std::once_flag flag;
std::optional<SpinLockImpl> impl;
void SpinLockImpl::Initialize() noexcept {
// Needed for W^X systems (i.e SElinux, OpenBSD)
code.setProtectMode(Xbyak::CodeArray::ProtectMode::PROTECT_RW);
Xbyak::Reg64 const ABI_PARAM1 = Backend::X64::HostLocToReg64(Backend::X64::ABI_PARAM1);
code.align();
lock = code.getCurr<void (*)(volatile int*)>();
@ -99,6 +101,7 @@ void SpinLockImpl::Initialize() noexcept {
unlock = code.getCurr<void (*)(volatile int*)>();
EmitSpinLockUnlock(code, ABI_PARAM1, code.eax);
code.ret();
code.setProtectMode(Xbyak::CodeArray::ProtectMode::PROTECT_RE);
}
void SpinLockImpl::GlobalInitialize() noexcept {