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_MONITOR_ENTER.S 18 * 19 * Code: Aquire a monitor 20 * 21 * For: monitor-enter 22 * 23 * Description: Aquire a monitor for the indicated object. 24 * 25 * 26 * 27 * Format: AA|op (11x) 28 * 29 * Syntax: op vAA 30 */ 31 32 movl rGLUE, %eax # %eax<- pMterpGlue 33 GET_VREG rINST # rINST<- vAA 34 cmp $$0, rINST # check for null object 35 movl offGlue_self(%eax), %eax # %eax<- glue->self 36 #ifdef WITH_MONITOR_TRACKING 37 EXPORT_PC # export PC so we can grab stack trace 38 #endif 39 je common_errNullObject # handle null object 40 # jmp .L${opcode}_finish 41 #%break 42 #.L${opcode}_finish: 43 movl rINST, -4(%esp) # push parameter reference 44 movl %eax, -8(%esp) # push parameter 45 lea -8(%esp), %esp 46 call dvmLockObject # call: (struct Thread* self, 47 # struct Object* obj) 48 # return: void 49 FFETCH_ADV 1, %edx # %edx<- next instruction hi; fetch, advance 50 lea 8(%esp), %esp 51 #ifdef WITH_DEADLOCK_PREDICTION 52 movl rGLUE, %eax # %eax<- pMterpGlue 53 movl offGlue_self(%eax), %eax # %eax<- glue->self 54 movl offThread_exception(%eax), %eax # %eax<- glue->self->exception 55 cmp $$0, %eax # check for exception 56 jne common_exceptionThrown # handle exception 57 #endif 58 FGETOP_JMP 1, %edx # jump to next instruction; getop, jmp 59
