diff options
Diffstat (limited to 'sim/bfin/bfin-sim.c')
| -rw-r--r-- | sim/bfin/bfin-sim.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sim/bfin/bfin-sim.c b/sim/bfin/bfin-sim.c index 7e747ff..1555dc2 100644 --- a/sim/bfin/bfin-sim.c +++ b/sim/bfin/bfin-sim.c @@ -4009,7 +4009,12 @@ decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) /* If subtract, just invert and add one. */ if (aop & 0x1) - val1 = ~val1 + 1; + { + if (val1 == 0x80000000) + val1 = 0x7FFFFFFF; + else + val1 = ~val1 + 1; + } /* Get the sign bits, since we need them later. */ sBit1 = !!(val0 & 0x80000000); |