diff options
Diffstat (limited to 'vm/mterp/armv5te/OP_SHR_LONG.S')
| -rw-r--r-- | vm/mterp/armv5te/OP_SHR_LONG.S | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/vm/mterp/armv5te/OP_SHR_LONG.S b/vm/mterp/armv5te/OP_SHR_LONG.S new file mode 100644 index 0000000..e6489a0 --- /dev/null +++ b/vm/mterp/armv5te/OP_SHR_LONG.S @@ -0,0 +1,32 @@ +%verify "executed" + /* + * 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 + add r3, rFP, r3, lsl #2 @ r3<- &fp[BB] + GET_VREG(r2, r0) @ r2<- vCC + ldmia r3, {r0-r1} @ r0/r1<- vBB/vBB+1 + and r2, r2, #63 @ r0<- r0 & 0x3f + add r9, rFP, r9, lsl #2 @ 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 + b .L${opcode}_finish +%break + +.L${opcode}_finish: + 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 |