| %default {"preinstr":""} | |
| /* | |
| * Generic 64bit-to-32bit unary operation. Provide an "instr" line | |
| * that specifies an instruction that performs "result = op r0/r1", where | |
| * "result" is a 32-bit quantity in r0. | |
| * | |
| * For: long-to-float, double-to-int, double-to-float | |
| * | |
| * (This would work for long-to-int, but that instruction is actually | |
| * an exact match for op_move.) | |
| */ | |
| /* unop vA, vB */ | |
| mov r3, rINST, lsr #12 @ r3<- B | |
| ubfx r9, rINST, #8, #4 @ r9<- A | |
| VREG_INDEX_TO_ADDR r3, r3 @ r3<- &fp[B] | |
| ldmia r3, {r0-r1} @ r0/r1<- vB/vB+1 | |
| FETCH_ADVANCE_INST 1 @ advance rPC, load rINST | |
| $preinstr @ optional op; may set condition codes | |
| $instr @ r0<- op, r0-r3 changed | |
| GET_INST_OPCODE ip @ extract opcode from rINST | |
| SET_VREG r0, r9 @ vA<- r0 | |
| GOTO_OPCODE ip @ jump to next instruction | |
| /* 9-10 instructions */ |