/* | |
* Long integer shift. This is different from the generic 32/64-bit | |
* binary operations because vAA/vBB are 64-bit but vCC (the shift | |
* distance) is 32-bit. Also, Dalvik requires us to mask off the low | |
* 6 bits of the shift distance. | |
*/ | |
/* shr-long vAA, vBB, vCC */ | |
FETCH r0, 1 @ r0<- CCBB | |
mov r9, rINST, lsr #8 @ r9<- AA | |
and r3, r0, #255 @ r3<- BB | |
mov r0, r0, lsr #8 @ r0<- CC | |
VREG_INDEX_TO_ADDR r3, r3 @ r3<- &fp[BB] | |
GET_VREG r2, r0 @ r2<- vCC | |
ldmia r3, {r0-r1} @ r0/r1<- vBB/vBB+1 | |
CLEAR_SHADOW_PAIR r9, lr, ip @ Zero out the shadow regs | |
and r2, r2, #63 @ r0<- r0 & 0x3f | |
VREG_INDEX_TO_ADDR r9, r9 @ r9<- &fp[AA] | |
mov r0, r0, lsr r2 @ r0<- r2 >> r2 | |
rsb r3, r2, #32 @ r3<- 32 - r2 | |
orr r0, r0, r1, asl r3 @ r0<- r0 | (r1 << (32-r2)) | |
subs ip, r2, #32 @ ip<- r2 - 32 | |
movpl r0, r1, asr ip @ if r2 >= 32, r0<-r1 >> (r2-32) | |
FETCH_ADVANCE_INST 2 @ advance rPC, load rINST | |
mov r1, r1, asr r2 @ r1<- r1 >> r2 | |
GET_INST_OPCODE ip @ extract opcode from rINST | |
stmia r9, {r0-r1} @ vAA/vAA+1<- r0/r1 | |
GOTO_OPCODE ip @ jump to next instruction |