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Introduce asm_supported() helper

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This commit is contained in:
bjorn3 2023-10-21 16:34:57 +00:00
parent 46388c1702
commit 55cc776731
2 changed files with 13 additions and 6 deletions
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8
src/global_asm.rs
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@ -81,6 +81,10 @@ pub(crate) fn codegen_global_asm_item(tcx: TyCtxt<'_>, global_asm: &mut String,
}
}
pub(crate) fn asm_supported(tcx: TyCtxt<'_>) -> bool {
cfg!(feature = "inline_asm") && !tcx.sess.target.is_like_windows
}
#[derive(Debug)]
pub(crate) struct GlobalAsmConfig {
asm_enabled: bool,
@ -90,10 +94,8 @@ pub(crate) struct GlobalAsmConfig {
impl GlobalAsmConfig {
pub(crate) fn new(tcx: TyCtxt<'_>) -> Self {
let asm_enabled = cfg!(feature = "inline_asm") && !tcx.sess.target.is_like_windows;
GlobalAsmConfig {
asm_enabled,
asm_enabled: asm_supported(tcx),
assembler: crate::toolchain::get_toolchain_binary(tcx.sess, "as"),
output_filenames: tcx.output_filenames(()).clone(),
}

11
src/inline_asm.rs
View File

@ -8,6 +8,7 @@ use rustc_span::sym;
use rustc_target::asm::*;
use target_lexicon::BinaryFormat;
use crate::global_asm::asm_supported;
use crate::prelude::*;
enum CInlineAsmOperand<'tcx> {
@ -44,9 +45,13 @@ pub(crate) fn codegen_inline_asm<'tcx>(
) {
// FIXME add .eh_frame unwind info directives
if !template.is_empty()
&& (cfg!(not(feature = "inline_asm")) || fx.tcx.sess.target.is_like_windows)
{
if !asm_supported(fx.tcx) {
if template.is_empty() {
let destination_block = fx.get_block(destination.unwrap());
fx.bcx.ins().jump(destination_block, &[]);
return;
}
// Used by panic_abort
if template[0] == InlineAsmTemplatePiece::String("int $$0x29".to_string()) {
fx.bcx.ins().trap(TrapCode::User(1));