1 %default {"preinstr":""} 2 /* 3 * Generic 64bit-to-32bit unary operation. Provide an "instr" line 4 * that specifies an instruction that performs "result = op r0/r1", where 5 * "result" is a 32-bit quantity in r0. 6 * 7 * For: long-to-float, double-to-int, double-to-float 8 * 9 * (This would work for long-to-int, but that instruction is actually 10 * an exact match for op_move.) 11 */ 12 /* unop vA, vB */ 13 mov r3, rINST, lsr #12 @ r3<- B 14 ubfx r9, rINST, #8, #4 @ r9<- A 15 VREG_INDEX_TO_ADDR r3, r3 @ r3<- &fp[B] 16 ldmia r3, {r0-r1} @ r0/r1<- vB/vB+1 17 FETCH_ADVANCE_INST 1 @ advance rPC, load rINST 18 $preinstr @ optional op; may set condition codes 19 $instr @ r0<- op, r0-r3 changed 20 GET_INST_OPCODE ip @ extract opcode from rINST 21 SET_VREG r0, r9 @ vA<- r0 22 GOTO_OPCODE ip @ jump to next instruction 23 /* 9-10 instructions */ 24
