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%verify "executed"
/*
* Signed 64-bit integer multiply, "/2addr" version.
*
* See OP_MUL_LONG for an explanation.
*
* We get a little tight on registers, so to avoid looking up &fp[A]
* again we stuff it into rINST.
*/
/* mul-long/2addr vA, vB */
mov r9, rINST, lsr #8 @ r9<- A+
mov r1, rINST, lsr #12 @ r1<- B
and r9, r9, #15
add r1, rFP, r1, lsl #2 @ r1<- &fp[B]
add rINST, rFP, r9, lsl #2 @ rINST<- &fp[A]
ldmia r1, {r2-r3} @ r2/r3<- vBB/vBB+1
ldmia rINST, {r0-r1} @ r0/r1<- vAA/vAA+1
mul ip, r2, r1 @ ip<- ZxW
umull r9, r10, r2, r0 @ r9/r10 <- ZxX
mla r2, r0, r3, ip @ r2<- YxX + (ZxW)
mov r0, rINST @ r0<- &fp[A] (free up rINST)
FETCH_ADVANCE_INST(1) @ advance rPC, load rINST
add r10, r2, r10 @ r10<- r10 + low(ZxW + (YxX))
GET_INST_OPCODE(ip) @ extract opcode from rINST
stmia r0, {r9-r10} @ vAA/vAA+1<- r9/r10
GOTO_OPCODE(ip) @ jump to next instruction
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