| buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Generic 32-bit unary floating-point operation. Provide an "instr" |
| 3 | * line that specifies an instruction that performs "s1 = op s0". |
| 4 | * |
| 5 | * for: int-to-float, float-to-int |
| 6 | */ |
| 7 | /* unop vA, vB */ |
| 8 | mov r3, rINST, lsr #12 @ r3<- B |
| 9 | mov r9, rINST, lsr #8 @ r9<- A+ |
| 10 | VREG_INDEX_TO_ADDR r3, r3 @ r3<- &vB |
| 11 | flds s0, [r3] @ s0<- vB |
| 12 | FETCH_ADVANCE_INST 1 @ advance rPC, load rINST |
| 13 | and r9, r9, #15 @ r9<- A |
| 14 | $instr @ s1<- op |
| 15 | GET_INST_OPCODE ip @ extract opcode from rINST |
| 16 | VREG_INDEX_TO_ADDR r9, r9 @ r9<- &vA |
| 17 | fsts s1, [r9] @ vA<- s1 |
| 18 | GOTO_OPCODE ip @ jump to next instruction |