diff options
| -rw-r--r-- | sys/src/cmd/aux/realemu/xec.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/sys/src/cmd/aux/realemu/xec.c b/sys/src/cmd/aux/realemu/xec.c index 90c8bc1ec..4195abe73 100644 --- a/sys/src/cmd/aux/realemu/xec.c +++ b/sys/src/cmd/aux/realemu/xec.c @@ -799,21 +799,8 @@ opidiv(Cpu *cpu, Inst *i) q = n/d; r = n%d; - /* check for overflow based on operand size */ - switch(s) { - case 8: - min = (char)0x80; - max = 0x7F; - break; - case 16: - min = (short)0x8000; - max = 0x7FFF; - break; - case 32: - min = (long)0x80000000; - max = 0x7FFFFFFF; - break; - } + max = sign(s)-1; + min = ~max; if(q > max || q < min) trap(cpu, EDIV0); |