src/ld/parsers/libunwind/InternalMacros.h

   1 /* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
   2  *
   3  * Copyright (c) 2008 Apple Inc. All rights reserved.
   4  *
   5  * @APPLE_LICENSE_HEADER_START@
   6  *
   7  * This file contains Original Code and/or Modifications of Original Code
   8  * as defined in and that are subject to the Apple Public Source License
   9  * Version 2.0 (the 'License'). You may not use this file except in
  10  * compliance with the License. Please obtain a copy of the License at
  11  * http://www.opensource.apple.com/apsl/ and read it before using this
  12  * file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  19  * Please see the License for the specific language governing rights and
  20  * limitations under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24
  25
  26
  27 #ifndef INTERNAL_MACROS_H
  28 #define INTERNAL_MACROS_H
  29
  30 #include <assert.h>
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35         extern void __assert_rtn(const char *, const char *, int, const char *) __attribute__((noreturn));
  36 #ifdef __cplusplus
  37 }
  38 #endif
  39
  40 #define UNW_STEP_SUCCESS 1
  41 #define UNW_STEP_END     0
  42
  43
  44 struct v128 { unsigned int vec[4]; };
  45
  46
  47 #define EXPORT __attribute__((visibility("default")))
  48
  49 #define COMPILE_TIME_ASSERT( expr )    \
  50                 extern int compile_time_assert_failed[ ( expr ) ? 1 : -1 ] __attribute__( ( unused ) );
  51
  52 #define ABORT(msg) __assert_rtn(__func__, __FILE__, __LINE__, msg)
  53
  54 #if NDEBUG
  55         #define DEBUG_MESSAGE(msg, ...)
  56         #define DEBUG_PRINT_API(msg, ...)
  57         #define DEBUG_PRINT_UNWINDING_TEST 0
  58         #define DEBUG_PRINT_UNWINDING(msg, ...)
  59         #define DEBUG_LOG_NON_ZERO(x) x;
  60         #define INITIALIZE_DEBUG_PRINT_API
  61         #define INITIALIZE_DEBUG_PRINT_UNWINDING
  62 #else
  63         #define DEBUG_MESSAGE(msg, ...)  fprintf(stderr, "libuwind: " msg, __VA_ARGS__)
  64         #ifdef __cplusplus
  65                 extern "C" {
  66         #endif
  67                 extern  bool logAPIs();
  68                 extern  bool logUnwinding();
  69         #ifdef __cplusplus
  70                 }
  71         #endif
  72         #define DEBUG_LOG_NON_ZERO(x) { int _err = x; if ( _err != 0 ) fprintf(stderr, "libuwind: " #x "=%d in %s", _err, __FUNCTION__); }
  73         #define DEBUG_PRINT_API(msg, ...) do { if ( logAPIs() ) fprintf(stderr,  msg, __VA_ARGS__); } while(0)
  74         #define DEBUG_PRINT_UNWINDING(msg, ...) do { if ( logUnwinding() ) fprintf(stderr,  msg, __VA_ARGS__); } while(0)
  75         #define DEBUG_PRINT_UNWINDING_TEST logUnwinding()
  76         #define INITIALIZE_DEBUG_PRINT_API bool logAPIs() { static bool log = (getenv("LIBUNWIND_PRINT_APIS") != NULL); return log; }
  77         #define INITIALIZE_DEBUG_PRINT_UNWINDING bool logUnwinding() { static bool log = (getenv("LIBUNWIND_PRINT_UNWINDING") != NULL); return log; }
  78 #endif
  79
  80
  81 // note hack for <rdar://problem/6175741>
  82 // Once libgcc_s.dylib vectors to libSystem, then we can remove the $ld$hide$os10.6$ lines
  83 #if __ppc__
  84         #define NOT_HERE_BEFORE_10_6(sym) \
  85                 extern const char sym##_tmp3 __asm("$ld$hide$os10.3$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp3 = 0; \
  86                 extern const char sym##_tmp4 __asm("$ld$hide$os10.4$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp4 = 0; \
  87                 extern const char sym##_tmp5 __asm("$ld$hide$os10.5$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp5 = 0;
  88         #define NEVER_HERE(sym) \
  89                 extern const char sym##_tmp3 __asm("$ld$hide$os10.3$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp3 = 0; \
  90                 extern const char sym##_tmp4 __asm("$ld$hide$os10.4$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp4 = 0; \
  91                 extern const char sym##_tmp5 __asm("$ld$hide$os10.5$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp5 = 0; \
  92                 extern const char sym##_tmp6 __asm("$ld$hide$os10.6$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp6 = 0;
  93 #else
  94         #define NOT_HERE_BEFORE_10_6(sym) \
  95                 extern const char sym##_tmp4 __asm("$ld$hide$os10.4$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp4 = 0; \
  96                 extern const char sym##_tmp5 __asm("$ld$hide$os10.5$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp5 = 0;
  97         #define NEVER_HERE(sym) \
  98                 extern const char sym##_tmp4 __asm("$ld$hide$os10.4$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp4 = 0; \
  99                 extern const char sym##_tmp5 __asm("$ld$hide$os10.5$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp5 = 0; \
 100                 extern const char sym##_tmp6 __asm("$ld$hide$os10.6$_" #sym ); __attribute__((visibility("default"))) const char sym##_tmp6 = 0;
 101 #endif
 102
 103
 104
 105 #endif // INTERNAL_MACROS_H