paoda
/
zba
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

feat(cpu): Implement ORR

This commit is contained in:
Rekai Nyangadzayi Musuka 2022-01-10 08:06:00 -04:00
parent 0f08ad05be
commit e9c1c94cae
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/cpu/data_processing.zig
View File

@ -64,6 +64,16 @@ pub fn dataProcessing(comptime I: bool, comptime S: bool, comptime instrKind: u4
cpu.cpsr.c.write(op2 <= cpu.r[op1]); cpu.cpsr.c.write(op2 <= cpu.r[op1]);
cpu.cpsr.v.write(((op1 ^ result) & (~op2 ^ result)) >> 31 & 1 == 1); cpu.cpsr.v.write(((op1 ^ result) & (~op2 ^ result)) >> 31 & 1 == 1);
}, },
0xC => {
// ORR
const result = cpu.r[op1] | op2;
if (S and rd != 0xF) {
cpu.cpsr.n.write(result >> 31 & 1 == 1);
cpu.cpsr.z.write(result == 0);
// C set by Barr0x15el Shifter, V is unnafected
}
},
else => std.debug.panic("[CPU] TODO: implement data processing type {}", .{instrKind}), else => std.debug.panic("[CPU] TODO: implement data processing type {}", .{instrKind}),
} }
} }