rustc_target/callconv/
sparc.rs

1use rustc_abi::{HasDataLayout, Size, TyAbiInterface};
2
3use crate::callconv::{ArgAbi, FnAbi, Reg, Uniform};
4
5fn classify_ret<Ty, C>(cx: &C, ret: &mut ArgAbi<'_, Ty>, offset: &mut Size)
6where
7    C: HasDataLayout,
8{
9    if !ret.layout.is_aggregate() {
10        ret.extend_integer_width_to(32);
11    } else {
12        ret.make_indirect();
13        *offset += cx.data_layout().pointer_size();
14    }
15}
16
17fn classify_arg<'a, Ty, C>(cx: &C, arg: &mut ArgAbi<'a, Ty>, offset: &mut Size)
18where
19    Ty: TyAbiInterface<'a, C> + Copy,
20    C: HasDataLayout,
21{
22    if !arg.layout.is_sized() {
23        // FIXME: Update offset?
24        // Not touching this...
25        return;
26    }
27    let dl = cx.data_layout();
28    if arg.layout.pass_indirectly_in_non_rustic_abis(cx) {
29        arg.make_indirect();
30        *offset += dl.pointer_size();
31        return;
32    }
33    let size = arg.layout.size;
34    let align = arg.layout.align.abi.max(dl.i32_align).min(dl.i64_align);
35
36    if arg.layout.is_aggregate() {
37        let pad_i32 = !offset.is_aligned(align);
38        arg.cast_to_and_pad_i32(Uniform::new(Reg::i32(), size), pad_i32);
39    } else {
40        arg.extend_integer_width_to(32);
41    }
42
43    *offset = offset.align_to(align) + size.align_to(align);
44}
45
46pub(crate) fn compute_abi_info<'a, Ty, C>(cx: &C, fn_abi: &mut FnAbi<'a, Ty>)
47where
48    Ty: TyAbiInterface<'a, C> + Copy,
49    C: HasDataLayout,
50{
51    let mut offset = Size::ZERO;
52    if !fn_abi.ret.is_ignore() {
53        classify_ret(cx, &mut fn_abi.ret, &mut offset);
54    }
55
56    for arg in fn_abi.args.iter_mut() {
57        if arg.is_ignore() {
58            continue;
59        }
60        classify_arg(cx, arg, &mut offset);
61    }
62}
rustc_target/callconv/sparc.rs

rustc_target/callconv/
sparc.rs
