fix(cpu): properly negate in NEG

2022-10-21 05:12:11 -03:00 · 2022-10-21 05:12:11 -03:00 · fbedebb938
parent 1773a3acc8
commit fbedebb938
1 changed files with 1 additions and 1 deletions
--- a/src/cpu/thumb/format4.zig
+++ b/src/cpu/thumb/format4.zig
@ -72,7 +72,7 @@ pub fn format4(comptime op: u4) InstrFn {
                },
                0x9 => {
                    // NEG
-                    cpu.r[rd] = sub(true, cpu, cpu.r[rs], cpu.r[rd]); // FIXME: I think this is wrong?
+                    cpu.r[rd] = sub(true, cpu, 0, cpu.r[rs]);
                },
                0xA => {
                    // CMP