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load complex returned symbol

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Folkert 2023-09-15 16:23:54 +02:00
parent 027b8aff4d
commit 0b67ed8f2f
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1 changed files with 38 additions and 14 deletions
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52
crates/compiler/gen_dev/src/generic64/aarch64.rs
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@ -1,7 +1,7 @@
use crate::generic64::{storage::StorageManager, Assembler, CallConv, RegTrait};
use crate::{
pointer_layouts, single_register_floats, single_register_int_builtins,
single_register_integers, Relocation,
single_register_integers, single_register_layouts, Relocation,
};
use bumpalo::collections::Vec;
use packed_struct::prelude::*;
@ -496,20 +496,44 @@ impl CallConv<AArch64GeneralReg, AArch64FloatReg, AArch64Assembler> for AArch64C
}
fn load_returned_complex_symbol<'a>(
_buf: &mut Vec<'a, u8>,
_storage_manager: &mut StorageManager<
'a,
'_,
AArch64GeneralReg,
AArch64FloatReg,
AArch64Assembler,
AArch64Call,
>,
_layout_interner: &mut STLayoutInterner<'a>,
_sym: &Symbol,
_layout: &InLayout<'a>,
buf: &mut Vec<'a, u8>,
storage_manager: &mut AArch64StorageManager<'a, '_>,
layout_interner: &mut STLayoutInterner<'a>,
sym: &Symbol,
layout: &InLayout<'a>,
) {
todo!("Loading returned complex symbols for AArch64");
match layout_interner.get_repr(*layout) {
single_register_layouts!() => {
internal_error!("single register layouts are not complex symbols");
}
_ if layout_interner.stack_size(*layout) == 0 => {
storage_manager.no_data(sym);
}
_ if !Self::returns_via_arg_pointer(layout_interner, layout) => {
let size = layout_interner.stack_size(*layout);
let offset =
storage_manager.claim_stack_area_layout(layout_interner, *sym, *layout);
if size <= 8 {
AArch64Assembler::mov_base32_reg64(buf, offset, Self::GENERAL_RETURN_REGS[0]);
} else if size <= 16 {
AArch64Assembler::mov_base32_reg64(buf, offset, Self::GENERAL_RETURN_REGS[0]);
AArch64Assembler::mov_base32_reg64(
buf,
offset + 8,
Self::GENERAL_RETURN_REGS[1],
);
} else {
internal_error!(
"types that don't return via arg pointer must be less than 16 bytes"
);
}
}
_ => {
// This should have been recieved via an arg pointer.
// That means the value is already loaded onto the stack area we allocated before the call.
// Nothing to do.
}
}
}
fn setjmp(_buf: &mut Vec<'_, u8>) {