1 // Reference: MSP430 Embedded Application Binary Interface
2 // https://www.ti.com/lit/an/slaa534a/slaa534a.pdf
4 use crate::abi::call::{ArgAbi, FnAbi};
6 // 3.5 Structures or Unions Passed and Returned by Reference
8 // "Structures (including classes) and unions larger than 32 bits are passed and
9 // returned by reference. To pass a structure or union by reference, the caller
10 // places its address in the appropriate location: either in a register or on
11 // the stack, according to its position in the argument list. (..)"
12 fn classify_ret<Ty>(ret: &mut ArgAbi<'_, Ty>) {
13 if ret.layout.is_aggregate() && ret.layout.size.bits() > 32 {
16 ret.extend_integer_width_to(16);
20 fn classify_arg<Ty>(arg: &mut ArgAbi<'_, Ty>) {
21 if arg.layout.is_aggregate() && arg.layout.size.bits() > 32 {
24 arg.extend_integer_width_to(16);
28 pub fn compute_abi_info<Ty>(fn_abi: &mut FnAbi<'_, Ty>) {
29 if !fn_abi.ret.is_ignore() {
30 classify_ret(&mut fn_abi.ret);
33 for arg in &mut fn_abi.args {