compiler/rustc_target/src/abi/call/sparc.rs

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