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_CONST_CLASS.S 18 * 19 * Code: Move a class reference to a register. Uses no substitutions. 20 * 21 * For: const/class 22 * 23 * Description: Move a reference to the class specified 24 * by the given index into the specified register. 25 * In the case where the indicated type is primitive, 26 * this will store a reference to the primitive type's 27 * degenerate class. 28 * 29 * Format: AA|op BBBBlo BBBBhi (21c) 30 * 31 * Syntax: op vAA, field@BBBB 32 */ 33 34 movl rGLUE, %edx # get MterpGlue pointer 35 FETCH 1, %ecx # %ecx<- BBBB 36 movl offGlue_methodClassDex(%edx), %eax # %eax<- pDvmDex 37 movl offDvmDex_pResClasses(%eax), %eax # %eax<- pDvmDex->pResClasses 38 movl (%eax, %ecx, 4), %eax # %eax<- resolved class 39 cmp $$0, %eax # check if classes is resolved before? 40 je .L${opcode}_resolve # resolve class 41 SET_VREG %eax, rINST # vAA<- resolved class 42 FINISH 2 # jump to next instruction 43 %break 44 45 /* 46 * Continuation if the Class has not yet been resolved. 47 * %ecx: BBBB (Class ref) 48 * need: target register 49 */ 50 51 .L${opcode}_resolve: 52 EXPORT_PC 53 movl offGlue_method(%edx), %edx # %edx<- glue->method 54 movl offMethod_clazz(%edx), %edx # %edx<- glue->method->clazz 55 movl $$1, -4(%esp) # push parameter true 56 movl %ecx, -8(%esp) # push parameter 57 movl %edx, -12(%esp) # push parameter glue->method->clazz 58 lea -12(%esp), %esp 59 call dvmResolveClass # resolve ClassObject pointer 60 # class: (const ClassObject* referrer, u4 classIdx, 61 # bool fromUnverifiedConstant) 62 # return: ClassObject* 63 lea 12(%esp), %esp 64 cmp $$0, %eax # check for null pointer 65 je common_exceptionThrown # handle exception 66 SET_VREG %eax, rINST # vAA<- resolved class 67 FINISH 2 # jump to next instruction 68
