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[x64/Linux] Ensure EmitHostToGuestThunk saves rsi

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Herman S.
2025-10-15 11:57:49 +09:00
parent 83ff0c501b
commit 2abf91603e
1 changed files with 5 additions and 1 deletions
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6
src/xenia/cpu/backend/x64/x64_backend.cc
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@@ -693,10 +693,14 @@ HostToGuestThunk X64HelperEmitter::EmitHostToGuestThunk() {
EmitSaveNonvolatileRegs(); EmitSaveNonvolatileRegs();
mov(rax, rdi); mov(rax, rdi);
// mov(rsi, rsi); // context // Save context register (RSI is volatile on Linux/Mac System V ABI, but we
// need it preserved)
mov(qword[rsp + offsetof(StackLayout::Thunk, xmm[0])], rsi);
mov(rdi, ptr[rsi + offsetof(ppc::PPCContext, virtual_membase)]); // membase mov(rdi, ptr[rsi + offsetof(ppc::PPCContext, virtual_membase)]); // membase
mov(rcx, rdx); // return address mov(rcx, rdx); // return address
call(rax); call(rax);
// Restore context register
mov(rsi, qword[rsp + offsetof(StackLayout::Thunk, xmm[0])]);
EmitLoadNonvolatileRegs(); EmitLoadNonvolatileRegs();