| %default {"preinstr":"", "result0":"a0"} | |
| /* | |
| * Generic 32-bit unary operation. Provide an "instr" line that | |
| * specifies an instruction that performs "result0 = op a0". | |
| * This could be a MIPS instruction or a function call. | |
| * | |
| * for: int-to-byte, int-to-char, int-to-short, | |
| * neg-int, not-int, neg-float | |
| */ | |
| /* unop vA, vB */ | |
| GET_OPB(a3) # a3 <- B | |
| GET_OPA4(t0) # t0 <- A+ | |
| GET_VREG(a0, a3) # a0 <- vB | |
| FETCH_ADVANCE_INST(1) # advance rPC, load rINST | |
| $preinstr # optional op | |
| $instr # a0 <- op, a0-a3 changed | |
| GET_INST_OPCODE(t1) # extract opcode from rINST | |
| SET_VREG_GOTO($result0, t0, t1) # vA <- result0 |