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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
{