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_SPUT_OBJECT.S 18 * 19 * Code: Generic 32-bit static field "put" operation. Uses no substitutions. 20 * 21 * For: sput-boolean, sput-byte, sput-char, sput-object, sput, sput-short 22 * 23 * Description: Perform the identified object static field operation 24 * with the identified static field; store the field value 25 * register. 26 * 27 * Format: AA|op BBBB (21c) 28 * 29 * Syntax: op vAA, string@BBBB 30 */ 31 32 movl rGLUE, %edx # %edx<- pMterpGlue 33 movl offGlue_methodClassDex(%edx), %ecx # %ecx<- pDvmDex 34 FETCH 1, %eax # %eax<- BBBB 35 movl offDvmDex_pResFields(%ecx), %ecx # %ecx<- pResFields 36 cmp $$0, (%ecx, %eax, 4) # check for null ptr; resolved StaticField 37 movl (%ecx, %eax, 4), %ecx # %ecx<- resolved StaticField 38 je .L${opcode}_resolve 39 jmp .L${opcode}_finish 40%break 41 42.L${opcode}_resolve: 43 movl offGlue_method(%edx), %edx # %edx <- glue->method 44 EXPORT_PC # in case an exception is thrown 45 movl %eax, -4(%esp) # push parameter CCCC; field ref 46 movl offMethod_clazz(%edx), %edx # %edx<- method->clazz 47 movl %edx, -8(%esp) # push parameter method->clazz 48 lea -8(%esp), %esp 49 call dvmResolveStaticField # call: (const ClassObject* referrer, u4 ifieldIdx) 50 # return: StaticField* 51 cmp $$0, %eax # check if initalization failed 52 lea 8(%esp), %esp 53 je common_exceptionThrown # failed; handle exception 54 movl %eax, %ecx # %ecx<- result 55 56.L${opcode}_finish: 57 FFETCH_ADV 2, %eax # %eax<- next instruction hi; fetch, advance 58 GET_VREG rINST # rINST<- vAA 59 60 61 movl rINST, offStaticField_value(%ecx) # field value<- vAA 62 testl rINST, rINST # stored null object ptr? 63 je 1f 64 movl rGLUE, %edx # get glue 65 movl offField_clazz(%ecx), %ecx # ecx<- field->clazz 66 movl offGlue_cardTable(%edx), %edx # get card table base 67 shrl $$GC_CARD_SHIFT, %ecx # head to card number 68 movb %dl, (%edx, %ecx) # mark card 691: 70 FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp 71