| /* |
| * Copyright (C) 2014 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 "driver/compiler_driver.h" |
| |
| namespace art { |
| void CompilerDriver::BuildArmEntrypointTrampolineCall(ThreadOffset<4> thread_offset) { |
| // Thumb2 instruction encoding of: |
| // ldr pc,[r9,#offset] |
| |
| // TODO: we don't currently have a Thumb2 assembler, when we do use that |
| // in preference to the hand generated code below. |
| uint32_t offset = thread_offset.Uint32Value(); |
| uint32_t instruction = 0xf8d0f000 | (9 << 16) | (offset & 0xfff); |
| entrypoint_trampoline_code_.push_back((instruction >> 16) & 0xff); |
| entrypoint_trampoline_code_.push_back((instruction >> 24) & 0xff); |
| entrypoint_trampoline_code_.push_back((instruction >> 0) & 0xff); |
| entrypoint_trampoline_code_.push_back((instruction >> 8) & 0xff); |
| } |
| } // namespace art |