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Add basic inline asm support for x86_64

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This commit is contained in:
bjorn3 2020-07-10 14:45:45 +02:00
parent 35701d8caa
commit 726e329f46
6 changed files with 243 additions and 15 deletions
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29
src/base.rs
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@ -36,6 +36,7 @@ pub(crate) fn trans_fn<'tcx, B: Backend + 'static>(
let mut fx = FunctionCx {
tcx,
module: &mut cx.module,
global_asm: &mut cx.global_asm,
pointer_type,
instance,
@ -307,24 +308,26 @@ fn codegen_fn_content(fx: &mut FunctionCx<'_, '_, impl Backend>) {
TerminatorKind::InlineAsm {
template,
operands,
options: _,
options,
destination,
line_spans: _,
} => {
match template {
&[] => {
assert_eq!(operands, &[]);
match *destination {
Some(destination) => {
let destination_block = fx.get_block(destination);
fx.bcx.ins().jump(destination_block, &[]);
}
None => bug!(),
}
crate::inline_asm::codegen_inline_asm(
fx,
bb_data.terminator().source_info.span,
template,
operands,
*options,
);
// Black box
match *destination {
Some(destination) => {
let destination_block = fx.get_block(destination);
fx.bcx.ins().jump(destination_block, &[]);
}
None => {
crate::trap::trap_unreachable(fx, "[corruption] Returned from noreturn inline asm");
}
_ => fx.tcx.sess.span_fatal(bb_data.terminator().source_info.span, "Inline assembly is not supported"),
}
}
TerminatorKind::Resume | TerminatorKind::Abort => {