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x64 backend: Save nonvolatile XMM registers on host -> guest transitions

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Define the context and membase registers in the x64 emitter.
This commit is contained in:
Dr. Chat
2016-08-22 14:55:16 -05:00
parent e3fdb08ad7
commit 5f4416ee2f
5 changed files with 139 additions and 139 deletions
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15
src/xenia/cpu/backend/x64/x64_emitter.cc
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@@ -160,10 +160,6 @@ bool X64Emitter::Emit(HIRBuilder* builder, size_t* out_stack_size) {
// Must be 16b aligned.
// Windows is very strict about the form of this and the epilog:
// http://msdn.microsoft.com/en-us/library/tawsa7cb.aspx
// TODO(benvanik): save off non-volatile registers so we can use them:
// RBX, RBP, RDI, RSI, RSP, R12, R13, R14, R15
// Only want to do this if we actually use them, though, otherwise
// it just adds overhead.
// IMPORTANT: any changes to the prolog must be kept in sync with
// X64CodeCache, which dynamically generates exception information.
// Adding or changing anything here must be matched!
@@ -172,7 +168,7 @@ bool X64Emitter::Emit(HIRBuilder* builder, size_t* out_stack_size) {
*out_stack_size = stack_size;
stack_size_ = stack_size;
sub(rsp, (uint32_t)stack_size);
mov(qword[rsp + StackLayout::GUEST_RCX_HOME], rcx);
mov(qword[rsp + StackLayout::GUEST_CTX_HOME], rcx);
mov(qword[rsp + StackLayout::GUEST_RET_ADDR], rdx);
mov(qword[rsp + StackLayout::GUEST_CALL_RET_ADDR], 0);
@@ -205,7 +201,7 @@ bool X64Emitter::Emit(HIRBuilder* builder, size_t* out_stack_size) {
}
// Load membase.
mov(rdx, qword[rcx + 8]);
mov(rdx, qword[rcx + offsetof(ppc::PPCContext, virtual_membase)]);
// Body.
auto block = builder->first_block();
@@ -237,7 +233,7 @@ bool X64Emitter::Emit(HIRBuilder* builder, size_t* out_stack_size) {
L(epilog_label);
epilog_label_ = nullptr;
EmitTraceUserCallReturn();
mov(rcx, qword[rsp + StackLayout::GUEST_RCX_HOME]);
mov(rcx, qword[rsp + StackLayout::GUEST_CTX_HOME]);
add(rsp, (uint32_t)stack_size);
ret();
@@ -546,8 +542,11 @@ void X64Emitter::SetReturnAddress(uint64_t value) {
mov(qword[rsp + StackLayout::GUEST_CALL_RET_ADDR], rax);
}
Xbyak::Reg64 X64Emitter::GetContextReg() { return rcx; }
Xbyak::Reg64 X64Emitter::GetMembaseReg() { return rdx; }
void X64Emitter::ReloadECX() {
mov(rcx, qword[rsp + StackLayout::GUEST_RCX_HOME]);
mov(rcx, qword[rsp + StackLayout::GUEST_CTX_HOME]);
}
void X64Emitter::ReloadEDX() {