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_IGET_WIDE.S 18 * 19 * Code: 64 bit instance field "get" operation. Uses no substitutions. 20 * 21 * For: iget-wide 22 * 23 * Description: Perform the object instance field "get" operation 24 * with the identified field; load the instance value into 25 * the value register. 26 * 27 * Format: B|A|op CCCC (22c) 28 * 29 * Syntax: op vA, vB, type@CCCC 30 * op vA, vB, field@CCCC 31 */ 32 33 movl rGLUE, %eax # %eax<- MterpGlue pointer 34 movl offGlue_methodClassDex(%eax), %ecx # %ecx<- pDvmDex 35 movl offDvmDex_pResFields(%ecx), %ecx # %ecx<- CCCC 36 FETCH 1, %edx # %edx<- pDvmDex->pResFields 37 movl (%ecx, %edx, 4), %ecx # %ecx<- resolved InstField ptr 38 cmp $$0, %ecx # check for null ptr; resolved InstField ptr 39 jne .L${opcode}_finish 40 movl offGlue_method(%eax), %ecx # %ecx <- current method 41 EXPORT_PC # in case an exception is thrown 42 movl offMethod_clazz(%ecx), %ecx # %ecx<- method->clazz 43 movl %ecx, -8(%esp) # push parameter CCCC; field ref 44 movl %edx, -4(%esp) # push parameter method->clazz 45 jmp .L${opcode}_finish2 46 %break 47 48 .L${opcode}_finish2: 49 lea -8(%esp), %esp 50 call dvmResolveInstField # resolve InstField ptr 51 # call: (const ClassObject* referrer, u4 ifieldIdx) 52 # return: InstField* 53 cmp $$0, %eax # check if resolved 54 lea 8(%esp), %esp 55 movl %eax, %ecx # %ecx<- %eax; %ecx expected to hold field 56 je common_exceptionThrown 57 58 /* 59 * %ecx holds resolved field 60 */ 61 62 .L${opcode}_finish: 63 64 movl rINST, %edx # %edx<- BA 65 shr $$4, %edx # %edx<- B 66 andl $$15, rINST # rINST<- A 67 GET_VREG %edx # %edx<- vB 68 cmp $$0, %edx # check for null object 69 je common_errNullObject 70 movl offInstField_byteOffset(%ecx), %ecx # %ecx<- field offset 71 FFETCH_ADV 2, %eax # %eax<- next instruction hi; fetch, advance 72 movq (%ecx, %edx), %xmm0 # %xmm0<- object field 73 movq %xmm0, (rFP, rINST, 4) # vA<- %xmm0; object field 74 FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp 75
