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x86 inline asm support

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This commit is contained in:
Gary Guo 2021-11-22 02:58:53 +00:00
parent eaf88c5b52
commit cfdf10b259
1 changed files with 19 additions and 1 deletions
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20
src/inline_asm.rs
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@ -493,6 +493,10 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
fn prologue(generated_asm: &mut String, arch: InlineAsmArch) { fn prologue(generated_asm: &mut String, arch: InlineAsmArch) {
match arch { match arch {
InlineAsmArch::X86 => {
generated_asm.push_str(" push ebp\n");
generated_asm.push_str(" mov ebp,[esp+8]\n");
}
InlineAsmArch::X86_64 => { InlineAsmArch::X86_64 => {
generated_asm.push_str(" push rbp\n"); generated_asm.push_str(" push rbp\n");
generated_asm.push_str(" mov rbp,rdi\n"); generated_asm.push_str(" mov rbp,rdi\n");
@ -503,6 +507,10 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
fn epilogue(generated_asm: &mut String, arch: InlineAsmArch) { fn epilogue(generated_asm: &mut String, arch: InlineAsmArch) {
match arch { match arch {
InlineAsmArch::X86 => {
generated_asm.push_str(" pop ebp\n");
generated_asm.push_str(" ret\n");
}
InlineAsmArch::X86_64 => { InlineAsmArch::X86_64 => {
generated_asm.push_str(" pop rbp\n"); generated_asm.push_str(" pop rbp\n");
generated_asm.push_str(" ret\n"); generated_asm.push_str(" ret\n");
@ -513,7 +521,7 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
fn epilogue_noreturn(generated_asm: &mut String, arch: InlineAsmArch) { fn epilogue_noreturn(generated_asm: &mut String, arch: InlineAsmArch) {
match arch { match arch {
InlineAsmArch::X86_64 => { InlineAsmArch::X86 | InlineAsmArch::X86_64 => {
generated_asm.push_str(" ud2\n"); generated_asm.push_str(" ud2\n");
} }
_ => unimplemented!("epilogue_noreturn for {:?}", arch), _ => unimplemented!("epilogue_noreturn for {:?}", arch),
@ -527,6 +535,11 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
offset: Size, offset: Size,
) { ) {
match arch { match arch {
InlineAsmArch::X86 => {
write!(generated_asm, " mov [ebp+0x{:x}], ", offset.bytes()).unwrap();
reg.emit(generated_asm, InlineAsmArch::X86, None).unwrap();
generated_asm.push('\n');
}
InlineAsmArch::X86_64 => { InlineAsmArch::X86_64 => {
write!(generated_asm, " mov [rbp+0x{:x}], ", offset.bytes()).unwrap(); write!(generated_asm, " mov [rbp+0x{:x}], ", offset.bytes()).unwrap();
reg.emit(generated_asm, InlineAsmArch::X86_64, None).unwrap(); reg.emit(generated_asm, InlineAsmArch::X86_64, None).unwrap();
@ -543,6 +556,11 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
offset: Size, offset: Size,
) { ) {
match arch { match arch {
InlineAsmArch::X86 => {
generated_asm.push_str(" mov ");
reg.emit(generated_asm, InlineAsmArch::X86, None).unwrap();
writeln!(generated_asm, ", [ebp+0x{:x}]", offset.bytes()).unwrap();
}
InlineAsmArch::X86_64 => { InlineAsmArch::X86_64 => {
generated_asm.push_str(" mov "); generated_asm.push_str(" mov ");
reg.emit(generated_asm, InlineAsmArch::X86_64, None).unwrap(); reg.emit(generated_asm, InlineAsmArch::X86_64, None).unwrap();