| /* |
| * Copyright (C) 2018 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. |
| */ |
| |
| // |
| // This file is used to generate #defines for use in assembly source code. |
| // |
| // The content of this file will be used to compile an object file |
| // (generated as human readable assembly text file, not as binary). |
| // This text file will then be post-processed by a python script to find |
| // and extract the constants and generate the final asm_defines.h header. |
| // |
| |
| // We use "asm volatile" to generate text that will stand out in the |
| // compiler generated intermediate assembly file (eg. ">>FOO 42 0<<"). |
| // We emit all values as 64-bit integers (which we will printed as text). |
| // We also store a flag which specifies whether the constant is negative. |
| // Note that "asm volatile" must be inside a method to please the compiler. |
| #define ASM_DEFINE(NAME, EXPR) \ |
| void AsmDefineHelperFor_##NAME() { \ |
| asm volatile("\n.ascii \">>" #NAME " %0 %1<<\"" \ |
| :: "i" (static_cast<int64_t>(EXPR)), "i" ((EXPR) < 0 ? 1 : 0)); \ |
| } |
| #include "asm_defines.def" |
