1 /* 2 * Copyright 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 // This file contains portions derived from LLVM, with the original copyright 18 // header below: 19 //===-------------- GDBJIT.h - Register debug symbols for JIT -------------===// 20 // 21 // The LLVM Compiler Infrastructure 22 // 23 // This file is distributed under the University of Illinois Open Source 24 // License. See LICENSE.TXT for details. 25 // 26 //===----------------------------------------------------------------------===// 27 // 28 // This file defines the data structures used by JIT engines to register object 29 // files (ideally containing debug info) with GDB. 30 // 31 //===----------------------------------------------------------------------===// 32 33 #ifndef BCC_EXECUTION_ENGINE_GDB_JIT_H 34 #define BCC_EXECUTION_ENGINE_GDB_JIT_H 35 36 #include "llvm/Support/DataTypes.h" 37 #include "llvm/Support/Compiler.h" 38 39 // This must be kept in sync with gdb/gdb/jit.h . 40 extern "C" { 41 42 typedef enum { 43 JIT_NOACTION = 0, 44 JIT_REGISTER_FN, 45 JIT_UNREGISTER_FN 46 } jit_actions_t; 47 48 struct jit_code_entry { 49 struct jit_code_entry *next_entry; 50 struct jit_code_entry *prev_entry; 51 const char *symfile_addr; 52 uint64_t symfile_size; 53 }; 54 55 struct jit_descriptor { 56 uint32_t version; 57 // This should be jit_actions_t, but we want to be specific about the 58 // bit-width. 59 uint32_t action_flag; 60 struct jit_code_entry *relevant_entry; 61 struct jit_code_entry *first_entry; 62 }; 63 64 // GDB 7.0+ puts a (silent) breakpoint in this function. 65 LLVM_ATTRIBUTE_NOINLINE void __jit_debug_register_code(); 66 67 } 68 69 #endif // BCC_EXECUTION_ENGINE_GDB_JIT_H 70