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Fix inline asm on macOS

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This commit is contained in:
bjorn3 2023-10-07 11:12:46 +00:00
parent 81093441c1
commit 07147f34d0
1 changed files with 36 additions and 6 deletions
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42
src/inline_asm.rs
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@ -6,6 +6,7 @@ use rustc_ast::ast::{InlineAsmOptions, InlineAsmTemplatePiece};
use rustc_middle::mir::InlineAsmOperand;
use rustc_span::sym;
use rustc_target::asm::*;
use target_lexicon::BinaryFormat;
use crate::prelude::*;
@ -589,11 +590,29 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
}
fn generate_asm_wrapper(&self, asm_name: &str) -> String {
let binary_format = crate::target_triple(self.tcx.sess).binary_format;
let mut generated_asm = String::new();
writeln!(generated_asm, ".globl {}", asm_name).unwrap();
writeln!(generated_asm, ".type {},@function", asm_name).unwrap();
writeln!(generated_asm, ".section .text.{},\"ax\",@progbits", asm_name).unwrap();
writeln!(generated_asm, "{}:", asm_name).unwrap();
match binary_format {
BinaryFormat::Elf => {
writeln!(generated_asm, ".globl {}", asm_name).unwrap();
writeln!(generated_asm, ".type {},@function", asm_name).unwrap();
writeln!(generated_asm, ".section .text.{},\"ax\",@progbits", asm_name).unwrap();
writeln!(generated_asm, "{}:", asm_name).unwrap();
}
BinaryFormat::Macho => {
writeln!(generated_asm, ".globl _{}", asm_name).unwrap();
writeln!(generated_asm, "_{}:", asm_name).unwrap();
}
BinaryFormat::Coff => {
writeln!(generated_asm, ".globl {}", asm_name).unwrap();
writeln!(generated_asm, "{}:", asm_name).unwrap();
}
_ => self
.tcx
.sess
.fatal(format!("Unsupported binary format for inline asm: {binary_format:?}")),
}
let is_x86 = matches!(self.arch, InlineAsmArch::X86 | InlineAsmArch::X86_64);
@ -690,8 +709,19 @@ impl<'tcx> InlineAssemblyGenerator<'_, 'tcx> {
if is_x86 {
generated_asm.push_str(".att_syntax\n");
}
writeln!(generated_asm, ".size {name}, .-{name}", name = asm_name).unwrap();
generated_asm.push_str(".text\n");
match binary_format {
BinaryFormat::Elf => {
writeln!(generated_asm, ".size {name}, .-{name}", name = asm_name).unwrap();
generated_asm.push_str(".text\n");
}
BinaryFormat::Macho | BinaryFormat::Coff => {}
_ => self
.tcx
.sess
.fatal(format!("Unsupported binary format for inline asm: {binary_format:?}")),
}
generated_asm.push_str("\n\n");
generated_asm