public Branch execute(Processor cpu) {
cpu.flagOp1 = op1.get32(cpu);
cpu.flagResult = (-cpu.flagOp1);
op1.set32(cpu, cpu.flagResult);
cpu.flagIns = UCodes.NEG32;
cpu.flagStatus = OSZAPC;
return Branch.None;
}
public Branch execute(Processor cpu) {
Reg op1 = cpu.regs[op1Index];
cpu.flagOp1 = op1.get32();
cpu.flagOp2 = op2.get32(cpu);
cpu.flagResult = (cpu.flagOp1 - cpu.flagOp2);
op1.set32(cpu.flagResult);
cpu.flagIns = UCodes.SUB32;
cpu.flagStatus = OSZAPC;
return Branch.None;
}
public Branch execute(Processor cpu) {
int shift = immb & (32 - 1);
int reg0 = op1.get32(cpu);
int res = (reg0 >>> shift) | (reg0 << (32 - shift));
op1.set32(cpu, res);
boolean bit30 = (res & (1 << (32 - 2))) != 0;
boolean bit31 = (res & (1 << (32 - 1))) != 0;
if (shift > 0) {
cpu.cf = bit31;
cpu.of = bit30 ^ bit31;
cpu.flagStatus &= NOFCF;
}
return Branch.None;
}
public Branch execute(Processor cpu) {
int shift = cpu.r_cl.get8() & 0x1f;
if (shift != 0) {
if (shift <= 16) {
cpu.flagStatus = OSZPC;
} else {
cpu.flagStatus = SZP;
cpu.of = false;
cpu.cf = false;
}
cpu.af = false;
cpu.flagOp1 = op1.get32(cpu);
cpu.flagOp2 = shift;
cpu.flagResult = (cpu.flagOp1 << cpu.flagOp2);
op1.set32(cpu, cpu.flagResult);
cpu.flagIns = UCodes.SHL32;
}
return Branch.None;
}
public Branch execute(Processor cpu) {
cpu.of = cpu.af = cpu.cf = false;
cpu.flagResult = (op1.get32(cpu) & immd);
cpu.flagStatus = SZP;
return Branch.None;
}
public Branch execute(Processor cpu) {
cpu.push32(op1.get32(cpu));
return Branch.None;
}
public Branch execute(Processor cpu) {
Reg op1 = cpu.regs[op1Index];
int tmp = op2.get32(cpu);
if (!cpu.sf()) op1.set32(tmp);
return Branch.None;
}