%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 | |
mov r9, rINST, lsr #8 @ r9<- A+ | |
add r3, rFP, r3, lsl #2 @ r3<- &fp[B] | |
and r9, r9, #15 | |
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 | |
/* 10-11 instructions */ |