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Tweak.

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This commit is contained in:
Jeff Law 1998-07-01 23:15:55 +00:00
parent 0f7d73858c
commit ee61616c43
1 changed files with 14 additions and 1 deletions
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15
sim/mn10300/am33.igen
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@ -2209,6 +2209,8 @@
"add"
*am33
{
int z, c, n, v;
unsigned long sum;
int srcreg1, srcreg2, dstreg;
PC = cia;
@ -2234,7 +2236,18 @@
else
dstreg = REG_E0 + RD0;
genericAdd3 (State.regs[srcreg1], State.regs[srcreg2], dstreg);
sum = source1 + source2;
State.regs[dstreg] = sum;
z = (sum == 0);
n = (sum & 0x80000000);
c = (sum < source1) || (sum < source2);
v = ((source1 & 0x80000000) == (source2 & 0x80000000)
&& (source1 & 0x80000000) != (sum & 0x80000000));
PSW &= ~(PSW_Z | PSW_N | PSW_C | PSW_V);
PSW |= ((z ? PSW_Z : 0) | ( n ? PSW_N : 0)
| (c ? PSW_C : 0) | (v ? PSW_V : 0));
}
// 1111 1101 1101 1000 Rn Rn IMM32; cmp imm24,Rn