diff options
Diffstat (limited to 'compiler/rustc_target/src/abi/call/s390x.rs')
-rw-r--r-- | compiler/rustc_target/src/abi/call/s390x.rs | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/compiler/rustc_target/src/abi/call/s390x.rs b/compiler/rustc_target/src/abi/call/s390x.rs new file mode 100644 index 000000000..13706e8c2 --- /dev/null +++ b/compiler/rustc_target/src/abi/call/s390x.rs @@ -0,0 +1,57 @@ +// FIXME: The assumes we're using the non-vector ABI, i.e., compiling +// for a pre-z13 machine or using -mno-vx. + +use crate::abi::call::{ArgAbi, FnAbi, Reg}; +use crate::abi::{HasDataLayout, TyAbiInterface}; + +fn classify_ret<Ty>(ret: &mut ArgAbi<'_, Ty>) { + if !ret.layout.is_aggregate() && ret.layout.size.bits() <= 64 { + ret.extend_integer_width_to(64); + } else { + ret.make_indirect(); + } +} + +fn classify_arg<'a, Ty, C>(cx: &C, arg: &mut ArgAbi<'a, Ty>) +where + Ty: TyAbiInterface<'a, C> + Copy, + C: HasDataLayout, +{ + if !arg.layout.is_aggregate() && arg.layout.size.bits() <= 64 { + arg.extend_integer_width_to(64); + return; + } + + if arg.layout.is_single_fp_element(cx) { + match arg.layout.size.bytes() { + 4 => arg.cast_to(Reg::f32()), + 8 => arg.cast_to(Reg::f64()), + _ => arg.make_indirect(), + } + } else { + match arg.layout.size.bytes() { + 1 => arg.cast_to(Reg::i8()), + 2 => arg.cast_to(Reg::i16()), + 4 => arg.cast_to(Reg::i32()), + 8 => arg.cast_to(Reg::i64()), + _ => arg.make_indirect(), + } + } +} + +pub fn compute_abi_info<'a, Ty, C>(cx: &C, fn_abi: &mut FnAbi<'a, Ty>) +where + Ty: TyAbiInterface<'a, C> + Copy, + C: HasDataLayout, +{ + if !fn_abi.ret.is_ignore() { + classify_ret(&mut fn_abi.ret); + } + + for arg in &mut fn_abi.args { + if arg.is_ignore() { + continue; + } + classify_arg(cx, arg); + } +} |