gold/gold.h

   1 // gold.h -- general definitions for gold   -*- C++ -*-
   2
   3 #ifndef GOLD_GOLD_H
   4
   5 #include "config.h"
   6 #include "ansidecl.h"
   7
   8 #ifdef ENABLE_NLS
   9 # include <libintl.h>
  10 # define _(String) gettext (String)
  11 # ifdef gettext_noop
  12 #  define N_(String) gettext_noop (String)
  13 # else
  14 #  define N_(String) (String)
  15 # endif
  16 #else
  17 # define gettext(Msgid) (Msgid)
  18 # define dgettext(Domainname, Msgid) (Msgid)
  19 # define dcgettext(Domainname, Msgid, Category) (Msgid)
  20 # define textdomain(Domainname) while (0) /* nothing */
  21 # define bindtextdomain(Domainname, Dirname) while (0) /* nothing */
  22 # define _(String) (String)
  23 # define N_(String) (String)
  24 #endif
  25
  26 // Figure out how to get a hash set and a hash map.
  27
  28 #if defined(HAVE_TR1_UNORDERED_SET) && defined(HAVE_TR1_UNORDERED_MAP)
  29
  30 #include <tr1/unordered_set>
  31 #include <tr1/unordered_map>
  32
  33 // We need a template typedef here.
  34
  35 #define Unordered_set std::tr1::unordered_set
  36 #define Unordered_map std::tr1::unordered_map
  37
  38 #elif defined(HAVE_EXT_HASH_MAP) && defined(HAVE_EXT_HASH_SET)
  39
  40 #include <ext/hash_map>
  41 #include <ext/hash_set>
  42 #include <string>
  43
  44 #define Unordered_set __gnu_cxx::hash_set
  45 #define Unordered_map __gnu_cxx::hash_map
  46
  47 namespace __gnu_cxx
  48 {
  49
  50 template<>
  51 struct hash<std::string>
  52 {
  53   size_t
  54   operator()(std::string s) const
  55   { return __stl_hash_string(s.c_str()); }
  56 };
  57
  58 template<typename T>
  59 struct hash<T*>
  60 {
  61   size_t
  62   operator()(T* p) const
  63   { return reinterpret_cast<size_t>(p); }
  64 };
  65
  66 }
  67
  68 #else
  69
  70 // The fallback is to just use set and map.
  71
  72 #include <set>
  73 #include <map>
  74
  75 #define Unordered_set std::set
  76 #define Unordered_map std::map
  77
  78 #endif
  79
  80 namespace gold
  81 {
  82 // This is a hack to work around a problem with older versions of g++.
  83 // The problem is that they don't support calling a member template by
  84 // specifying the template parameters.  It works to pass in an
  85 // argument for argument dependent lookup.
  86
  87 // To use this, the member template method declaration should put
  88 // ACCEPT_SIZE or ACCEPT_SIZE_ENDIAN after the last parameter.  If the
  89 // method takes no parameters, use ACCEPT_SIZE_ONLY or
  90 // ACCEPT_SIZE_ENDIAN_ONLY.
  91
  92 // When calling the method, instead of using fn<size>, use fn
  93 // SELECT_SIZE_NAME or SELECT_SIZE_ENDIAN_NAME.  And after the last
  94 // argument, put SELECT_SIZE(size) or SELECT_SIZE_ENDIAN(size,
  95 // big_endian).  If there is only one argment, use the _ONLY variants.
  96
  97 #ifdef HAVE_MEMBER_TEMPLATE_SPECIFICATIONS
  98
  99 #define SELECT_SIZE_NAME(size) <size>
 100 #define SELECT_SIZE(size)
 101 #define SELECT_SIZE_ONLY(size)
 102 #define ACCEPT_SIZE
 103 #define ACCEPT_SIZE_ONLY
 104 #define ACCEPT_SIZE_EXPLICIT(size)
 105
 106 #define SELECT_SIZE_ENDIAN_NAME(size, big_endian) <size, big_endian>
 107 #define SELECT_SIZE_ENDIAN(size, big_endian)
 108 #define SELECT_SIZE_ENDIAN_ONLY(size, big_endian)
 109 #define ACCEPT_SIZE_ENDIAN
 110 #define ACCEPT_SIZE_ENDIAN_ONLY
 111 #define ACCEPT_SIZE_ENDIAN_EXPLICIT(size, big_endian)
 112
 113 #else // !defined(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS)
 114
 115 template<int size>
 116 class Select_size { };
 117 template<int size, bool big_endian>
 118 class Select_size_endian { };
 119
 120 #define SELECT_SIZE_NAME(size)
 121 #define SELECT_SIZE(size) , Select_size<size>()
 122 #define SELECT_SIZE_ONLY(size) Select_size<size>()
 123 #define ACCEPT_SIZE , Select_size<size>
 124 #define ACCEPT_SIZE_ONLY Select_size<size>
 125 #define ACCEPT_SIZE_EXPLICIT(size) , Select_size<size>
 126
 127 #define SELECT_SIZE_ENDIAN_NAME(size, big_endian)
 128 #define SELECT_SIZE_ENDIAN(size, big_endian) \
 129   , Select_size_endian<size, big_endian>()
 130 #define SELECT_SIZE_ENDIAN_ONLY(size, big_endian) \
 131   Select_size_endian<size, big_endian>()
 132 #define ACCEPT_SIZE_ENDIAN , Select_size_endian<size, big_endian>
 133 #define ACCEPT_SIZE_ENDIAN_ONLY Select_size_endian<size, big_endian>
 134 #define ACCEPT_SIZE_ENDIAN_EXPLICIT(size, big_endian) \
 135   , Select_size_endian<size, big_endian>
 136
 137 #endif // !defined(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS)
 138
 139 } // End namespace gold.
 140
 141 namespace gold
 142 {
 143
 144 class General_options;
 145 class Command_line;
 146 class Input_argument_list;
 147 class Dirsearch;
 148 class Input_objects;
 149 class Symbol_table;
 150 class Layout;
 151 class Workqueue;
 152 class Output_file;
 153
 154 // The name of the program as used in error messages.
 155 extern const char* program_name;
 156
 157 // This function is called to exit the program.  Status is true to
 158 // exit success (0) and false to exit failure (1).
 159 extern void
 160 gold_exit(bool status) ATTRIBUTE_NORETURN;
 161
 162 // This function is called to emit an unexpected error message and a
 163 // newline, and then exit with failure.  If PERRNO is true, it reports
 164 // the error in errno.
 165 extern void
 166 gold_fatal(const char* msg, bool perrno) ATTRIBUTE_NORETURN;
 167
 168 // This is function is called in some cases if we run out of memory.
 169 extern void
 170 gold_nomem() ATTRIBUTE_NORETURN;
 171
 172 // This macro and function are used in cases which can not arise if
 173 // the code is written correctly.
 174
 175 #define gold_unreachable() \
 176   (gold::do_gold_unreachable(__FILE__, __LINE__, __FUNCTION__))
 177
 178 extern void do_gold_unreachable(const char*, int, const char*)
 179   ATTRIBUTE_NORETURN;
 180
 181 // Assertion check.
 182
 183 #define gold_assert(expr) ((void)(!(expr) ? gold_unreachable(), 0 : 0))
 184
 185 // Queue up the first set of tasks.
 186 extern void
 187 queue_initial_tasks(const General_options&,
 188                     const Dirsearch&,
 189                     const Command_line&,
 190                     Workqueue*,
 191                     Input_objects*,
 192                     Symbol_table*,
 193                     Layout*);
 194
 195 // Queue up the middle set of tasks.
 196 extern void
 197 queue_middle_tasks(const General_options&,
 198                    const Input_objects*,
 199                    Symbol_table*,
 200                    Layout*,
 201                    Workqueue*);
 202
 203 // Queue up the final set of tasks.
 204 extern void
 205 queue_final_tasks(const General_options&,
 206                   const Input_objects*,
 207                   const Symbol_table*,
 208                   const Layout*,
 209                   Workqueue*,
 210                   Output_file* of);
 211
 212 } // End namespace gold.
 213
 214 #endif // !defined(GOLD_GOLD_H)