1   /* Copyright (C) 2008 The Android Open Source Project
2    *
3    * Licensed under the Apache License, Version 2.0 (the "License");
4    * you may not use this file except in compliance with the License.
5    * You may obtain a copy of the License at
6    *
7    * http://www.apache.org/licenses/LICENSE-2.0
8    *
9    * Unless required by applicable law or agreed to in writing, software
10    * distributed under the License is distributed on an "AS IS" BASIS,
11    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12    * See the License for the specific language governing permissions and
13    * limitations under the License.
14    */
15
16   /*
17    * File: OP_AGET_WIDE.S
18    *
19    * Code: 64-bit array get operation.
20    *
21    * For: aget-wide
22    *
23    * Description: Perform an array get operation at the identified index
24    *              of a given array; load the array value into the destination
25    *              register. vAA <- vBB[vCC].
26    *
27    * Format: AA|op CC|BB (23x)
28    *
29    * Syntax: op vAA, vBB, vCC
30    */
31
32    FETCH_BB    1, %ecx                 # %ecx<- BB
33    FETCH_CC    1, %edx                 # %edx<- CC
34    GET_VREG    %ecx                    # %ecx<- vBB
35    GET_VREG    %edx                    # %edx<- vCC
36    cmp         $$0, %ecx               # check for null array object
37    je          common_errNullObject    # handle null array object
38    cmp         offArrayObject_length(%ecx), %edx # compare index to arrayObj->length
39    jnc         common_errArrayIndex    # handle index >= length, bail
40    FFETCH_ADV  2, %eax                 # %eax<- next instruction hi; fetch, advance
41    movq        offArrayObject_contents(%ecx, %edx, 8), %xmm0 # %xmm0<- vBB[vCC]
42    movq        %xmm0, (rFP, rINST, 4)  # vAA<- %xmm0; value
43    FGETOP_JMP  2, %eax                 # jump to next instruction; getop, jmp
44