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%def op_aget(load="lw", shift="2", data_offset="MIRROR_INT_ARRAY_DATA_OFFSET"):
/*
* Array get, 32 bits or less. vAA <- vBB[vCC].
*
* for: aget, aget-boolean, aget-byte, aget-char, aget-short
*
* NOTE: assumes data offset for arrays is the same for all non-wide types.
* If this changes, specialize.
*/
/* op vAA, vBB, vCC */
lbu a2, 2(rPC) # a2 <- BB
lbu a3, 3(rPC) # a3 <- CC
srl a4, rINST, 8 # a4 <- AA
GET_VREG_U a0, a2 # a0 <- vBB (array object)
GET_VREG a1, a3 # a1 <- vCC (requested index)
beqz a0, common_errNullObject # bail if null array object
lw a3, MIRROR_ARRAY_LENGTH_OFFSET(a0) # a3 <- arrayObj->length
.if $shift
# [d]lsa does not support shift count of 0.
dlsa a0, a1, a0, $shift # a0 <- arrayObj + index*width
.else
daddu a0, a1, a0 # a0 <- arrayObj + index*width
.endif
bgeu a1, a3, common_errArrayIndex # unsigned compare: index >= length, bail
FETCH_ADVANCE_INST 2 # advance rPC, load rINST
$load a2, $data_offset(a0) # a2 <- vBB[vCC]
GET_INST_OPCODE v0 # extract opcode from rINST
SET_VREG a2, a4 # vAA <- a2
GOTO_OPCODE v0 # jump to next instruction
%def op_aget_boolean():
% op_aget(load="lbu", shift="0", data_offset="MIRROR_BOOLEAN_ARRAY_DATA_OFFSET")
%def op_aget_byte():
% op_aget(load="lb", shift="0", data_offset="MIRROR_BYTE_ARRAY_DATA_OFFSET")
%def op_aget_char():
% op_aget(load="lhu", shift="1", data_offset="MIRROR_CHAR_ARRAY_DATA_OFFSET")
%def op_aget_object():
/*
* Array object get. vAA <- vBB[vCC].
*
* for: aget-object
*/
/* op vAA, vBB, vCC */
.extern artAGetObjectFromMterp
lbu a2, 2(rPC) # a2 <- BB
lbu a3, 3(rPC) # a3 <- CC
EXPORT_PC
GET_VREG_U a0, a2 # a0 <- vBB (array object)
GET_VREG a1, a3 # a1 <- vCC (requested index)
jal artAGetObjectFromMterp # (array, index)
ld a1, THREAD_EXCEPTION_OFFSET(rSELF)
srl a4, rINST, 8 # a4 <- AA
PREFETCH_INST 2
bnez a1, MterpException
SET_VREG_OBJECT v0, a4 # vAA <- v0
ADVANCE 2
GET_INST_OPCODE v0 # extract opcode from rINST
GOTO_OPCODE v0 # jump to next instruction
%def op_aget_short():
% op_aget(load="lh", shift="1", data_offset="MIRROR_SHORT_ARRAY_DATA_OFFSET")
%def op_aget_wide():
/*
* Array get, 64 bits. vAA <- vBB[vCC].
*
*/
/* aget-wide vAA, vBB, vCC */
lbu a2, 2(rPC) # a2 <- BB
lbu a3, 3(rPC) # a3 <- CC
srl a4, rINST, 8 # a4 <- AA
GET_VREG_U a0, a2 # a0 <- vBB (array object)
GET_VREG a1, a3 # a1 <- vCC (requested index)
beqz a0, common_errNullObject # bail if null array object
lw a3, MIRROR_ARRAY_LENGTH_OFFSET(a0) # a3 <- arrayObj->length
dlsa a0, a1, a0, 3 # a0 <- arrayObj + index*width
bgeu a1, a3, common_errArrayIndex # unsigned compare: index >= length, bail
FETCH_ADVANCE_INST 2 # advance rPC, load rINST
lw a2, MIRROR_WIDE_ARRAY_DATA_OFFSET(a0)
lw a3, (MIRROR_WIDE_ARRAY_DATA_OFFSET+4)(a0)
dinsu a2, a3, 32, 32 # a2 <- vBB[vCC]
GET_INST_OPCODE v0 # extract opcode from rINST
SET_VREG_WIDE a2, a4 # vAA <- a2
GOTO_OPCODE v0 # jump to next instruction
%def op_aput(store="sw", shift="2", data_offset="MIRROR_INT_ARRAY_DATA_OFFSET"):
/*
* Array put, 32 bits or less. vBB[vCC] <- vAA.
*
* for: aput, aput-boolean, aput-byte, aput-char, aput-short
*
* NOTE: this assumes data offset for arrays is the same for all non-wide types.
* If this changes, specialize.
*/
/* op vAA, vBB, vCC */
lbu a2, 2(rPC) # a2 <- BB
lbu a3, 3(rPC) # a3 <- CC
srl a4, rINST, 8 # a4 <- AA
GET_VREG_U a0, a2 # a0 <- vBB (array object)
GET_VREG a1, a3 # a1 <- vCC (requested index)
beqz a0, common_errNullObject # bail if null array object
lw a3, MIRROR_ARRAY_LENGTH_OFFSET(a0) # a3 <- arrayObj->length
.if $shift
# [d]lsa does not support shift count of 0.
dlsa a0, a1, a0, $shift # a0 <- arrayObj + index*width
.else
daddu a0, a1, a0 # a0 <- arrayObj + index*width
.endif
bgeu a1, a3, common_errArrayIndex # unsigned compare: index >= length, bail
FETCH_ADVANCE_INST 2 # advance rPC, load rINST
GET_VREG a2, a4 # a2 <- vAA
GET_INST_OPCODE v0 # extract opcode from rINST
$store a2, $data_offset(a0) # vBB[vCC] <- a2
GOTO_OPCODE v0 # jump to next instruction
%def op_aput_boolean():
% op_aput(store="sb", shift="0", data_offset="MIRROR_BOOLEAN_ARRAY_DATA_OFFSET")
%def op_aput_byte():
% op_aput(store="sb", shift="0", data_offset="MIRROR_BYTE_ARRAY_DATA_OFFSET")
%def op_aput_char():
% op_aput(store="sh", shift="1", data_offset="MIRROR_CHAR_ARRAY_DATA_OFFSET")
%def op_aput_object():
/*
* Store an object into an array. vBB[vCC] <- vAA.
*/
/* op vAA, vBB, vCC */
.extern MterpAputObject
EXPORT_PC
daddu a0, rFP, OFF_FP_SHADOWFRAME
move a1, rPC
move a2, rINST
jal MterpAputObject
beqzc v0, MterpPossibleException
FETCH_ADVANCE_INST 2 # advance rPC, load rINST
GET_INST_OPCODE v0 # extract opcode from rINST
GOTO_OPCODE v0 # jump to next instruction
%def op_aput_short():
% op_aput(store="sh", shift="1", data_offset="MIRROR_SHORT_ARRAY_DATA_OFFSET")
%def op_aput_wide():
/*
* Array put, 64 bits. vBB[vCC] <- vAA.
*
*/
/* aput-wide vAA, vBB, vCC */
lbu a2, 2(rPC) # a2 <- BB
lbu a3, 3(rPC) # a3 <- CC
srl a4, rINST, 8 # a4 <- AA
GET_VREG_U a0, a2 # a0 <- vBB (array object)
GET_VREG a1, a3 # a1 <- vCC (requested index)
beqz a0, common_errNullObject # bail if null array object
lw a3, MIRROR_ARRAY_LENGTH_OFFSET(a0) # a3 <- arrayObj->length
dlsa a0, a1, a0, 3 # a0 <- arrayObj + index*width
bgeu a1, a3, common_errArrayIndex # unsigned compare: index >= length, bail
GET_VREG_WIDE a2, a4 # a2 <- vAA
FETCH_ADVANCE_INST 2 # advance rPC, load rINST
GET_INST_OPCODE v0 # extract opcode from rINST
sw a2, MIRROR_WIDE_ARRAY_DATA_OFFSET(a0)
dsrl32 a2, a2, 0
sw a2, (MIRROR_WIDE_ARRAY_DATA_OFFSET+4)(a0) # vBB[vCC] <- a2
GOTO_OPCODE v0 # jump to next instruction
%def op_array_length():
/*
* Return the length of an array.
*/
srl a1, rINST, 12 # a1 <- B
GET_VREG_U a0, a1 # a0 <- vB (object ref)
ext a2, rINST, 8, 4 # a2 <- A
beqz a0, common_errNullObject # yup, fail
FETCH_ADVANCE_INST 1 # advance rPC, load rINST
lw a3, MIRROR_ARRAY_LENGTH_OFFSET(a0) # a3 <- array length
GET_INST_OPCODE v0 # extract opcode from rINST
SET_VREG a3, a2 # vB <- length
GOTO_OPCODE v0 # jump to next instruction
%def op_fill_array_data():
/* fill-array-data vAA, +BBBBBBBB */
.extern MterpFillArrayData
EXPORT_PC
lh a1, 2(rPC) # a1 <- bbbb (lo)
lh a0, 4(rPC) # a0 <- BBBB (hi)
srl a3, rINST, 8 # a3 <- AA
ins a1, a0, 16, 16 # a1 <- BBBBbbbb
GET_VREG_U a0, a3 # a0 <- vAA (array object)
dlsa a1, a1, rPC, 1 # a1 <- PC + BBBBbbbb*2 (array data off.)
jal MterpFillArrayData # (obj, payload)
beqzc v0, MterpPossibleException # exception?
FETCH_ADVANCE_INST 3 # advance rPC, load rINST
GET_INST_OPCODE v0 # extract opcode from rINST
GOTO_OPCODE v0 # jump to next instruction
%def op_filled_new_array(helper="MterpFilledNewArray"):
/*
* Create a new array with elements filled from registers.
*
* for: filled-new-array, filled-new-array/range
*/
/* op vB, {vD, vE, vF, vG, vA}, class//CCCC */
/* op {vCCCC..v(CCCC+AA-1)}, type//BBBB */
.extern $helper
EXPORT_PC
daddu a0, rFP, OFF_FP_SHADOWFRAME
move a1, rPC
move a2, rSELF
jal $helper
beqzc v0, MterpPossibleException
FETCH_ADVANCE_INST 3 # advance rPC, load rINST
GET_INST_OPCODE v0 # extract opcode from rINST
GOTO_OPCODE v0 # jump to next instruction
%def op_filled_new_array_range():
% op_filled_new_array(helper="MterpFilledNewArrayRange")
%def op_new_array():
/*
* Allocate an array of objects, specified with the array class
* and a count.
*
* The verifier guarantees that this is an array class, so we don't
* check for it here.
*/
/* new-array vA, vB, class//CCCC */
.extern MterpNewArray
EXPORT_PC
daddu a0, rFP, OFF_FP_SHADOWFRAME
move a1, rPC
move a2, rINST
move a3, rSELF
jal MterpNewArray
beqzc v0, MterpPossibleException
FETCH_ADVANCE_INST 2 # advance rPC, load rINST
GET_INST_OPCODE v0 # extract opcode from rINST
GOTO_OPCODE v0 # jump to next instruction
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