| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "asm_support_x86.S" |
| |
| /* |
| * Jni dlsym lookup stub. |
| */ |
| DEFINE_FUNCTION art_jni_dlsym_lookup_stub |
| subl LITERAL(4), %esp // align stack |
| CFI_ADJUST_CFA_OFFSET(4) |
| SETUP_GOT // pushes ebx |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| CFI_ADJUST_CFA_OFFSET(4) |
| call PLT_SYMBOL(artFindNativeMethod) // (Thread*) |
| addl LITERAL(4), %esp // remove argument |
| CFI_ADJUST_CFA_OFFSET(-4) |
| UNDO_SETUP_GOT // pop ebx |
| addl LITERAL(4), %esp // remove padding |
| CFI_ADJUST_CFA_OFFSET(-4) |
| testl %eax, %eax // check if returned method code is null |
| jz .Lno_native_code_found // if null, jump to return to handle |
| jmp *%eax // otherwise, tail call to intended method |
| .Lno_native_code_found: |
| ret |
| END_FUNCTION art_jni_dlsym_lookup_stub |
