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_SGET_WIDE.S
18    *
19    * Code: 64-bit static field "get" operation. Uses no substitutions.
20    *
21    * For: sget-wide
22    *
23    * Description: Perform the identified object static field operation
24    *              with the identified static field, loading or storing
25    *              into the value register.
26    *
27    * Format: AA|op BBBB (21c)
28    *
29    * Syntax: op vAA, string@BBBB
30    */
31
32    movl        rGLUE, %eax             # %eax<- pMterpGlue
33    movl        offGlue_methodClassDex(%eax), %ecx # %ecx<- glue->pDvmDex
34    FETCH       1, %edx                 # %edx<- BBBB
35    movl        offDvmDex_pResFields(%ecx), %ecx # %ecx<- pResFields
36    cmp         $$0, (%ecx, %edx, 4)    # check for null ptr; resolved StaticField ptr
37    movl        (%ecx, %edx, 4), %ecx   # %ecx<- resolved StaticField ptr
38    je          .L${opcode}_resolve
39
40.L${opcode}_finish:
41    FFETCH_ADV  2, %eax                 # %eax<- next instruction hi; fetch, advance
42    movq        offStaticField_value(%ecx), %xmm0 # %xmm0<- field value
43    movq        %xmm0, (rFP, rINST, 4)  # vAA<- field value
44    FGETOP_JMP  2, %eax                 # jump to next instruction; getop, jmp
45%break
46
47   /*
48    * Continuation if the field has not yet been resolved.
49    *  %edx: BBBB field ref
50    */
51
52.L${opcode}_resolve:
53    movl        offGlue_method(%eax), %eax # %eax <- glue->method
54    EXPORT_PC                           # in case an exception is thrown
55    movl        %edx, -4(%esp)          # push parameter CCCC; field ref
56    movl        offMethod_clazz(%eax), %eax # %eax<- method->clazz
57    movl        %eax, -8(%esp)          # push parameter method->clazz
58    lea         -8(%esp), %esp
59    call        dvmResolveStaticField   # call: (const ClassObject* referrer, u4 ifieldIdx)
60                                        # return: StaticField*
61    lea         8(%esp), %esp
62    cmp         $$0, %eax               # check if initalization failed
63    movl        %eax, %ecx              # %ecx<- result
64    jne         .L${opcode}_finish      # success, continue
65    jmp         common_exceptionThrown  # failed; handle exception
66