language-servers/roc
1
0
Fork 0
mirror of https://github.com/roc-lang/roc.git synced 2025-09-28 06:14:46 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

add support for the LEA instruction

Browse source
This commit is contained in:
Folkert 2023-04-23 15:16:06 +02:00
parent 28146c939f
commit 5a297248e2
No known key found for this signature in database
GPG key ID: 1F17F6FFD112B97C
1 changed files with 42 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

42
crates/compiler/gen_dev/src/generic64/x86_64.rs
View file

@ -1172,6 +1172,21 @@ impl Assembler<X86_64GeneralReg, X86_64FloatReg> for X86_64Assembler {
});
}
#[inline(always)]
fn function_pointer(
buf: &mut Vec<'_, u8>,
relocs: &mut Vec<'_, Relocation>,
fn_name: String,
dst: X86_64GeneralReg,
) {
lea_reg64(buf, dst);
relocs.push(Relocation::LinkedFunction {
offset: buf.len() as u64 - 4,
name: fn_name,
});
}
#[inline(always)]
fn imul_reg64_reg64_reg64(
buf: &mut Vec<'_, u8>,
@ -2398,6 +2413,24 @@ fn mov_reg64_imm64(buf: &mut Vec<'_, u8>, dst: X86_64GeneralReg, imm: i64) {
}
}
/// `LEA r64, m` -> Store effective address for m in register r64.
#[inline(always)]
fn lea_reg64(buf: &mut Vec<'_, u8>, dst: X86_64GeneralReg) {
let rex = add_opcode_extension(dst, REX_W);
let rex = add_reg_extension(dst, rex);
let dst_mod = dst as u8 % 8;
buf.extend([
rex,
0x8d,
0b00_000_101 | (dst_mod << 3),
0x00,
0x00,
0x00,
0x00,
])
}
/// `MOV r/m64,r64` -> Move r64 to r/m64.
/// This will not generate anything if dst and src are the same.
#[inline(always)]
@ -3413,6 +3446,15 @@ mod tests {
);
}
#[test]
fn test_lea_reg64() {
disassembler_test!(
lea_reg64,
|reg| format!("lea {}, [rip]", reg),
ALL_GENERAL_REGS
);
}
#[test]
fn test_mov_reg64_reg64() {
disassembler_test!(