gold/dwp.h

   1 // dwp.h -- general definitions for dwp.
   2
   3 // Copyright (C) 2012-2019 Free Software Foundation, Inc.
   4 // Written by Cary Coutant <ccoutant@google.com>.
   5
   6 // This file is part of dwp, the DWARF packaging utility.
   7
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 3 of the License, or
  11 // (at your option) any later version.
  12
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 // MA 02110-1301, USA.
  22
  23 #ifndef DWP_DWP_H
  24 #define DWP_DWP_H 1
  25
  26 #include "config.h"
  27 #include "ansidecl.h"
  28
  29 #include <cstddef>
  30 #include <cstdlib>
  31 #include <cstring>
  32 #include <stdint.h>
  33 #include <sys/types.h>
  34
  35 #include "system.h"
  36
  37 namespace gold
  38 {
  39
  40 extern const char* program_name;
  41
  42 class General_options;
  43 class Command_line;
  44 class Dirsearch;
  45 class Input_objects;
  46 class Mapfile;
  47 class Symbol;
  48 class Symbol_table;
  49 class Layout;
  50 class Task;
  51 class Workqueue;
  52 class Output_file;
  53 template<int size, bool big_endian>
  54 struct Relocate_info;
  55
  56 // The size of a section if we are going to look at the contents.
  57 typedef size_t section_size_type;
  58
  59 // An offset within a section when we are looking at the contents.
  60 typedef ptrdiff_t section_offset_type;
  61
  62 inline bool
  63 is_prefix_of(const char* prefix, const char* str)
  64 {
  65   return strncmp(prefix, str, strlen(prefix)) == 0;
  66 }
  67
  68 // Exit status codes.
  69
  70 enum Exit_status
  71 {
  72   GOLD_OK = EXIT_SUCCESS,
  73   GOLD_ERR = EXIT_FAILURE,
  74   GOLD_FALLBACK = EXIT_FAILURE + 1
  75 };
  76
  77 // This function is called to exit the program.  Status is true to
  78 // exit success (0) and false to exit failure (1).
  79 extern void
  80 gold_exit(Exit_status status) ATTRIBUTE_NORETURN;
  81
  82 // This function is called to emit an error message and then
  83 // immediately exit with failure.
  84 extern void
  85 gold_fatal(const char* format, ...) ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF_1;
  86
  87 // This function is called to issue a warning.
  88 extern void
  89 gold_warning(const char* msg, ...) ATTRIBUTE_PRINTF_1;
  90
  91 // This function is called to print an informational message.
  92 extern void
  93 gold_info(const char* msg, ...) ATTRIBUTE_PRINTF_1;
  94
  95 #define gold_unreachable() \
  96   (gold::do_gold_unreachable(__FILE__, __LINE__, \
  97                              static_cast<const char*>(__FUNCTION__)))
  98
  99 extern void do_gold_unreachable(const char*, int, const char*)
 100   ATTRIBUTE_NORETURN;
 101
 102 // Assertion check.
 103
 104 #define gold_assert(expr) ((void)(!(expr) ? gold_unreachable(), 0 : 0))
 105
 106 // Convert numeric types without unnoticed loss of precision.
 107 template<typename To, typename From>
 108 inline To
 109 convert_types(const From from)
 110 {
 111   To to = from;
 112   gold_assert(static_cast<From>(to) == from);
 113   return to;
 114 }
 115
 116 // A common case of convert_types<>: convert to section_size_type.
 117 template<typename From>
 118 inline section_size_type
 119 convert_to_section_size_type(const From from)
 120 { return convert_types<section_size_type, From>(from); }
 121
 122 }; // End namespace gold.
 123
 124 #endif // !defined(DWP_DWP_H)