1 //===----------------------------- config.h -------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 // 9 // Defines macros used within libuwind project. 10 // 11 //===----------------------------------------------------------------------===// 12 13 14 #ifndef LIBUNWIND_CONFIG_H 15 #define LIBUNWIND_CONFIG_H 16 17 #include <assert.h> 18 #include <stdio.h> 19 20 // Define static_assert() unless already defined by compiler. 21 #ifndef __has_feature 22 #define __has_feature(__x) 0 23 #endif 24 #if !(__has_feature(cxx_static_assert)) && !defined(static_assert) 25 #define static_assert(__b, __m) \ 26 extern int compile_time_assert_failed[ ( __b ) ? 1 : -1 ] \ 27 __attribute__( ( unused ) ); 28 #endif 29 30 // Platform specific configuration defines. 31 #ifdef __APPLE__ 32 #include <Availability.h> 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 void __assert_rtn(const char *, const char *, int, const char *) 37 __attribute__((noreturn)); 38 #ifdef __cplusplus 39 } 40 #endif 41 42 #define _LIBUNWIND_BUILD_ZERO_COST_APIS (defined(__i386__) || \ 43 defined(__x86_64__) || \ 44 defined(__arm64__)) 45 #define _LIBUNWIND_BUILD_SJLJ_APIS defined(__arm__) 46 #define _LIBUNWIND_SUPPORT_FRAME_APIS (defined(__i386__) || \ 47 defined(__x86_64__)) 48 #define _LIBUNWIND_EXPORT __attribute__((visibility("default"))) 49 #define _LIBUNWIND_HIDDEN __attribute__((visibility("hidden"))) 50 #define _LIBUNWIND_LOG(msg, ...) fprintf(stderr, "libunwind: " msg, __VA_ARGS__) 51 #define _LIBUNWIND_ABORT(msg) __assert_rtn(__func__, __FILE__, __LINE__, msg) 52 53 #if defined(FOR_DYLD) 54 #define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 1 55 #define _LIBUNWIND_SUPPORT_DWARF_UNWIND 0 56 #define _LIBUNWIND_SUPPORT_DWARF_INDEX 0 57 #else 58 #define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 1 59 #define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1 60 #define _LIBUNWIND_SUPPORT_DWARF_INDEX 0 61 #endif 62 63 #else 64 #include <stdlib.h> 65 66 static inline void assert_rtn(const char* func, const char* file, int line, const char* msg) __attribute__ ((noreturn)); 67 static inline void assert_rtn(const char* func, const char* file, int line, const char* msg) { 68 fprintf(stderr, "libunwind: %s %s:%d - %s\n", func, file, line, msg); 69 assert(false); 70 abort(); 71 } 72 73 #define _LIBUNWIND_BUILD_ZERO_COST_APIS (defined(__i386__) || \ 74 defined(__x86_64__) || \ 75 defined(__arm64__) || \ 76 defined(__arm__)) 77 #define _LIBUNWIND_BUILD_SJLJ_APIS 0 78 #define _LIBUNWIND_SUPPORT_FRAME_APIS (defined(__i386__) || \ 79 defined(__x86_64__)) 80 #define _LIBUNWIND_EXPORT __attribute__((visibility("default"))) 81 #define _LIBUNWIND_HIDDEN __attribute__((visibility("hidden"))) 82 #define _LIBUNWIND_LOG(msg, ...) fprintf(stderr, "libuwind: " msg, __VA_ARGS__) 83 #define _LIBUNWIND_ABORT(msg) assert_rtn(__func__, __FILE__, __LINE__, msg) 84 85 #define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 0 86 #define _LIBUNWIND_SUPPORT_DWARF_UNWIND !defined(__arm__) || \ 87 defined(__ARM_DWARF_EH__) 88 #define _LIBUNWIND_SUPPORT_DWARF_INDEX _LIBUNWIND_SUPPORT_DWARF_UNWIND 89 #endif 90 91 92 // Macros that define away in non-Debug builds 93 #ifdef NDEBUG 94 #define _LIBUNWIND_DEBUG_LOG(msg, ...) 95 #define _LIBUNWIND_TRACE_API(msg, ...) 96 #define _LIBUNWIND_TRACING_UNWINDING 0 97 #define _LIBUNWIND_TRACE_UNWINDING(msg, ...) 98 #define _LIBUNWIND_LOG_NON_ZERO(x) x 99 #else 100 #ifdef __cplusplus 101 extern "C" { 102 #endif 103 extern bool logAPIs(); 104 extern bool logUnwinding(); 105 #ifdef __cplusplus 106 } 107 #endif 108 #define _LIBUNWIND_DEBUG_LOG(msg, ...) _LIBUNWIND_LOG(msg, __VA_ARGS__) 109 #define _LIBUNWIND_LOG_NON_ZERO(x) \ 110 do { \ 111 int _err = x; \ 112 if ( _err != 0 ) \ 113 _LIBUNWIND_LOG("" #x "=%d in %s", _err, __FUNCTION__); \ 114 } while (0) 115 #define _LIBUNWIND_TRACE_API(msg, ...) \ 116 do { \ 117 if ( logAPIs() ) _LIBUNWIND_LOG(msg, __VA_ARGS__); \ 118 } while(0) 119 #define _LIBUNWIND_TRACE_UNWINDING(msg, ...) \ 120 do { \ 121 if ( logUnwinding() ) _LIBUNWIND_LOG(msg, __VA_ARGS__); \ 122 } while(0) 123 #define _LIBUNWIND_TRACING_UNWINDING logUnwinding() 124 #endif 125 126 127 #endif // LIBUNWIND_CONFIG_H 128
