diff options
Diffstat (limited to 'sim/pru')
| -rw-r--r-- | sim/pru/pru.isa | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/sim/pru/pru.isa b/sim/pru/pru.isa index fb2d049..e88522b 100644 --- a/sim/pru/pru.isa +++ b/sim/pru/pru.isa @@ -40,26 +40,30 @@ INSTRUCTION (sub, OP2 = (IO ? IMM8 : RS2); RD = RS1 - OP2; CARRY = (((uint64_t) RS1 - (uint64_t) OP2) >> RD_WIDTH) & 1; + CARRY = !CARRY; PC++) INSTRUCTION (suc, OP2 = (IO ? IMM8 : RS2); - RD = RS1 - OP2 - CARRY; - CARRY = (((uint64_t) RS1 - (uint64_t) OP2 - (uint64_t) CARRY) + RD = RS1 - OP2 - !CARRY; + CARRY = (((uint64_t) RS1 - (uint64_t) OP2 - (uint64_t) !CARRY) >> RD_WIDTH) & 1; + CARRY = !CARRY; PC++) INSTRUCTION (rsb, OP2 = (IO ? IMM8 : RS2); RD = OP2 - RS1; CARRY = (((uint64_t) OP2 - (uint64_t) RS1) >> RD_WIDTH) & 1; + CARRY = !CARRY; PC++) INSTRUCTION (rsc, OP2 = (IO ? IMM8 : RS2); - RD = OP2 - RS1 - CARRY; - CARRY = (((uint64_t) OP2 - (uint64_t) RS1 - (uint64_t) CARRY) + RD = OP2 - RS1 - !CARRY; + CARRY = (((uint64_t) OP2 - (uint64_t) RS1 - (uint64_t) !CARRY) >> RD_WIDTH) & 1; + CARRY = !CARRY; PC++) INSTRUCTION (lsl, |