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Fiddling with stack. Still wrong.

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This commit is contained in:
Ben Vanik
2014-01-26 04:34:29 -08:00
parent 495edda8d8
commit 3e52a99adf
3 changed files with 24 additions and 10 deletions
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16
src/alloy/backend/x64/x64_emitter.cc
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@@ -119,11 +119,17 @@ int X64Emitter::Emit(HIRBuilder* builder) {
// 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!
const bool emit_prolog = false;
const bool emit_prolog = true;
const size_t stack_size = 64;
if (emit_prolog) {
mov(qword[rsp + 16], rdx);
mov(qword[rsp + 8], rcx);
sub(rsp, stack_size);
// TODO(benvanik): save registers.
mov(qword[rsp + 8 * 0], rbx);
mov(qword[rsp + 8 * 1], r12);
mov(qword[rsp + 8 * 2], r13);
mov(qword[rsp + 8 * 3], r14);
mov(qword[rsp + 8 * 4], r15);
}
auto lowering_table = backend_->lowering_table();
@@ -157,8 +163,12 @@ int X64Emitter::Emit(HIRBuilder* builder) {
// Function epilog.
L("epilog");
if (emit_prolog) {
mov(rbx, qword[rsp + 8 * 0]);
mov(r12, qword[rsp + 8 * 1]);
mov(r13, qword[rsp + 8 * 2]);
mov(r14, qword[rsp + 8 * 3]);
mov(r15, qword[rsp + 8 * 4]);
add(rsp, stack_size);
// TODO(benvanik): restore registers.
}
ret();