| Ian Rogers | 7655f29 | 2013-07-29 11:07:13 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "asm_support_x86.S" |
| 18 | |
| 19 | /* |
| 20 | * Portable resolution trampoline. |
| 21 | */ |
| 22 | DEFINE_FUNCTION art_jni_dlsym_lookup_stub |
| 23 | subl LITERAL(8), %esp // align stack |
| 24 | .cfi_adjust_cfa_offset 8 |
| 25 | pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| 26 | .cfi_adjust_cfa_offset 4 |
| 27 | call SYMBOL(artFindNativeMethod) // (Thread*) |
| 28 | addl LITERAL(12), %esp // restore the stack |
| 29 | .cfi_adjust_cfa_offset -12 |
| 30 | cmpl LITERAL(0), %eax // check if returned method code is null |
| 31 | je no_native_code_found // if null, jump to return to handle |
| 32 | jmp *%eax // otherwise, tail call to intended method |
| 33 | no_native_code_found: |
| 34 | ret |
| 35 | END_FUNCTION art_jni_dlsym_lookup_stub |