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xenia
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Fixing stack alignment in release mode.

This commit is contained in:
Ben Vanik 2013-11-16 02:52:33 -08:00
parent a547a6e696
commit 96c27b3b51
2 changed files with 17 additions and 11 deletions
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5
README.md
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@ -86,11 +86,6 @@ manually execute commands have fun, nothing is stopping you.
## Known Issues
### Release Mode Crashes
There are some stack alignment issues with the JITed code, so release mode
dies on an unaligned SSE operation.
### Use of stdout
Currently everything is traced to stdout, which is slow and silly. A better

23
src/xenia/cpu/x64/x64_emitter.cc
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@ -144,8 +144,8 @@ int X64Emitter::PrepareFunction(FunctionSymbol* symbol) {
#if STACK_ALIGNMENT_CHECK
assembler_.mov(rax, rsp);
assembler_.and_(rax, imm(0xF));
assembler_.test(rax, rax);
assembler_.jz(l);
assembler_.cmp(rax, imm(0x8));
assembler_.je(l);
assembler_.int3();
assembler_.bind(l);
#endif // STACK_ALIGNMENT_CHECK
@ -155,11 +155,11 @@ int X64Emitter::PrepareFunction(FunctionSymbol* symbol) {
// Arguments passed as RCX, RDX, R8, R9
assembler_.push(rcx); // ppc_state
assembler_.push(rdx); // lr
assembler_.sub(rsp, imm(0x20));
assembler_.sub(rsp, imm(0x18));
assembler_.mov(rcx, imm((uint64_t)this));
assembler_.mov(rdx, imm((uint64_t)symbol));
assembler_.call(X64Emitter::OnDemandCompileTrampoline);
assembler_.add(rsp, imm(0x20));
assembler_.add(rsp, imm(0x18));
assembler_.pop(rdx); // lr
assembler_.pop(rcx); // ppc_state
assembler_.jmp(rax);
@ -168,11 +168,11 @@ int X64Emitter::PrepareFunction(FunctionSymbol* symbol) {
// Arguments passed as RDI, RSI, RDX, RCX, R8, R9
assembler_.push(rdi); // ppc_state
assembler_.push(rsi); // lr
assembler_.sub(rsp, imm(0x20));
assembler_.sub(rsp, imm(0x18));
assembler_.mov(rdi, imm((uint64_t)this));
assembler_.mov(rsi, imm((uint64_t)symbol));
assembler_.call(X64Emitter::OnDemandCompileTrampoline);
assembler_.add(rsp, imm(0x20));
assembler_.add(rsp, imm(0x18));
assembler_.pop(rsi); // lr
assembler_.pop(rdi); // ppc_state
assembler_.jmp(rax);
@ -326,6 +326,17 @@ int X64Emitter::MakeFunction(FunctionSymbol* symbol) {
// Perform final assembly/relocation.
symbol->impl_value = assembler_.make();
// TODO(benvanik): figure this out
//RUNTIME_FUNCTION* fn_table =
// (RUNTIME_FUNCTION*)xe_malloc(sizeof(RUNTIME_FUNCTION));
//UNWIND_INFO* unwind_info =
// (UNWIND_INFO*)xe_malloc(sizeof(UNWIND_INFO));
//fn_table[0].BeginAddress = 0;
//fn_table[0].EndAddress = assembler_.getCodeSize();
//fn_table[0].UnwindInfoAddress = ;
//fn_table[0].UnwindData = 0;
//RtlAddFunctionTable(fn_table, 1, (DWORD64)symbol->impl_value);
if (FLAGS_log_codegen) {
XELOGCPU("Compile(%s): compiled to 0x%p (%db)",
symbol->name(),