blob: 6f641dcd030e674f30710ff853ea4abc3dfabebd [file] [log] [blame]
%verify "executed"
/*
* Array get, 64 bits. vAA <- vBB[vCC].
*
* Arrays of long/double are 64-bit aligned, so it's okay to use LDRD.
*/
/* aget-wide vAA, vBB, vCC */
FETCH(r0, 1) @ r0<- CCBB
mov r9, rINST, lsr #8 @ r9<- AA
and r2, r0, #255 @ r2<- BB
mov r3, r0, lsr #8 @ r3<- CC
GET_VREG(r0, r2) @ r0<- vBB (array object)
GET_VREG(r1, r3) @ r1<- vCC (requested index)
cmp r0, #0 @ null array object?
beq common_errNullObject @ yes, bail
ldr r3, [r0, #offArrayObject_length] @ r3<- arrayObj->length
add r0, r0, r1, lsl #3 @ r0<- arrayObj + index*width
cmp r1, r3 @ compare unsigned index, length
bcc .L${opcode}_finish @ okay, continue below
b common_errArrayIndex @ index >= length, bail
@ May want to swap the order of these two branches depending on how the
@ branch prediction (if any) handles conditional forward branches vs.
@ unconditional forward branches.
%break
.L${opcode}_finish:
FETCH_ADVANCE_INST(2) @ advance rPC, load rINST
ldrd r2, [r0, #offArrayObject_contents] @ r2/r3<- vBB[vCC]
add r9, rFP, r9, lsl #2 @ r9<- &fp[AA]
GET_INST_OPCODE(ip) @ extract opcode from rINST
stmia r9, {r2-r3} @ vAA/vAA+1<- r2/r3
GOTO_OPCODE(ip) @ jump to next instruction