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feat(cpu): implement TEQ

This commit is contained in:
Rekai Nyangadzayi Musuka 2022-01-10 08:09:02 -04:00
parent e9c1c94cae
commit ed3bdd90fb
1 changed files with 9 additions and 0 deletions
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9
src/cpu/data_processing.zig
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@ -45,6 +45,15 @@ pub fn dataProcessing(comptime I: bool, comptime S: bool, comptime instrKind: u4
// Barrel Shifter should always calc CPSR C in TST // Barrel Shifter should always calc CPSR C in TST
if (!S) _ = BarrelShifter.exec(true, cpu, opcode); if (!S) _ = BarrelShifter.exec(true, cpu, opcode);
}, },
0x9 => {
// TEQ
const result = cpu.r[op1] ^ op2;
cpu.cpsr.n.write(result >> 31 & 1 == 1);
cpu.cpsr.z.write(result == 0);
// Barrel Shifter should always calc CPSR C in TEQ
if (!S) _ = BarrelShifter.exec(true, cpu, opcode);
},
0xD => { 0xD => {
// MOV // MOV
cpu.r[rd] = op2; cpu.r[rd] = op2;