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fully implement our crude memcpy

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Folkert 2023-04-30 15:46:15 +02:00
parent fa5b18685a
commit 6594fc0a90
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1 changed files with 64 additions and 10 deletions
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74
crates/compiler/gen_dev/src/generic64/mod.rs
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@ -3282,21 +3282,75 @@ impl<
let sym_reg = storage_manager.load_to_general_reg(buf, &value);
ASM::mov_mem64_offset32_reg64(buf, ptr_reg, element_offset, sym_reg);
}
_ if element_width == 0 => {}
_ if element_width > 8 => {
let (from_offset, size) = storage_manager.stack_offset_and_size(&value);
_other => {
if element_width == 0 {
return;
}
let (from_offset, stack_size) = storage_manager.stack_offset_and_size(&value);
debug_assert!(from_offset % 8 == 0);
debug_assert!(size % 8 == 0);
debug_assert_eq!(size as u64, element_width);
storage_manager.with_tmp_general_reg(buf, |_storage_manager, buf, tmp_reg| {
// a crude memcpy
for i in (0..size as i32).step_by(8) {
ASM::mov_reg64_base32(buf, tmp_reg, from_offset + i);
ASM::mov_mem64_offset32_reg64(buf, ptr_reg, element_offset + i, tmp_reg);
let mut copied = 0;
let size = stack_size as i32;
if size - copied >= 8 {
for _ in (0..(size - copied)).step_by(8) {
ASM::mov_reg64_base32(buf, tmp_reg, from_offset + copied);
ASM::mov_mem64_offset32_reg64(
buf,
ptr_reg,
element_offset + copied,
tmp_reg,
);
copied += 8;
}
}
if size - copied >= 4 {
for _ in (0..(size - copied)).step_by(4) {
ASM::mov_reg32_base32(buf, tmp_reg, from_offset + copied);
ASM::mov_mem32_offset32_reg32(
buf,
ptr_reg,
element_offset + copied,
tmp_reg,
);
copied += 4;
}
}
if size - copied >= 2 {
for _ in (0..(size - copied)).step_by(2) {
ASM::mov_reg16_base32(buf, tmp_reg, from_offset + copied);
ASM::mov_mem16_offset32_reg16(
buf,
ptr_reg,
element_offset + copied,
tmp_reg,
);
copied += 2;
}
}
if size - copied >= 1 {
for _ in (0..(size - copied)).step_by(1) {
ASM::mov_reg8_base32(buf, tmp_reg, from_offset + copied);
ASM::mov_mem8_offset32_reg8(
buf,
ptr_reg,
element_offset + copied,
tmp_reg,
);
copied += 1;
}
}
});
}
x => todo!("copying data to list with layout, {:?}", x),
}
}