| %default {"preinstr":""} | |
| /* | |
| * Generic 32-bit unary operation. Provide an "instr" line that | |
| * specifies an instruction that performs "a0 = op a0". | |
| * | |
| * for: int-to-byte, int-to-char, int-to-short, | |
| * not-int, neg-int | |
| */ | |
| /* unop vA, vB */ | |
| ext a3, rINST, 12, 4 # a3 <- B | |
| GET_VREG a0, a3 # a0 <- vB | |
| ext a2, rINST, 8, 4 # a2 <- A | |
| $preinstr # optional op | |
| FETCH_ADVANCE_INST 1 # advance rPC, load rINST | |
| $instr # a0 <- op, a0-a3 changed | |
| GET_INST_OPCODE v0 # extract opcode from rINST | |
| SET_VREG a0, a2 # vA <- a0 | |
| GOTO_OPCODE v0 # jump to next instruction |