diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2014-02-03 22:55:45 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2014-02-03 22:55:45 +0100 |
| commit | 88505bff06822e2d6313de477874a7a816935ea7 (patch) | |
| tree | 5aa2575b1187748d10a88a24c5787285757140a9 /sys/src/cmd/aux/realemu | |
| parent | fefc7b526da85c55d3cad66bfe8b565ac40f78d1 (diff) | |
realemu: cleanup opidiv
no need for switch here, just calculate the values. also fixes
6l warning about uninitialized min/max (compiler assumes none
of the case statements could match).
Diffstat (limited to 'sys/src/cmd/aux/realemu')
| -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); |