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add storing large args for passing

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Brendan Hansknecht 2022-02-19 16:42:03 -08:00
parent b5a10695ac
commit 4bc59cdb61
1 changed files with 13 additions and 0 deletions
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13
compiler/gen_dev/src/generic64/x86_64.rs
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@ -356,6 +356,19 @@ impl CallConv<X86_64GeneralReg, X86_64FloatReg, X86_64Assembler> for X86_64Syste
}
}
x if x.stack_size(TARGET_INFO) == 0 => {}
x if x.stack_size(TARGET_INFO) > 16 => {
// TODO: Double check this.
// Just copy onto the stack.
let (base_offset, size) = storage_manager.stack_offset_and_size(sym);
debug_assert_eq!(base_offset % 8, 0);
storage_manager.with_tmp_general_reg(buf, |_storage_manager, buf, reg| {
for i in (0..size as i32).step_by(8) {
X86_64Assembler::mov_reg64_base32(buf, reg, base_offset + i);
X86_64Assembler::mov_stack32_reg64(buf, tmp_stack_offset + i, reg);
}
});
tmp_stack_offset += size as i32;
}
x => {
todo!("calling with arg type, {:?}", x);
}