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
 105 #define SELECT_SIZE_ENDIAN_NAME(size, big_endian) <size, big_endian>
 106 #define SELECT_SIZE_ENDIAN(size, big_endian)
 107 #define SELECT_SIZE_ENDIAN_ONLY(size, big_endian)
 108 #define ACCEPT_SIZE_ENDIAN
 109 #define ACCEPT_SIZE_ENDIAN_ONLY
 110
 111 #else // !defined(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS)
 112
 113 template<int size>
 114 class Select_size { };
 115 template<int size, bool big_endian>
 116 class Select_size_endian { };
 117
 118 #define SELECT_SIZE_NAME(size)
 119 #define SELECT_SIZE(size) , Select_size<size>()
 120 #define SELECT_SIZE_ONLY(size) Select_size<size>()
 121 #define ACCEPT_SIZE , Select_size<size>
 122 #define ACCEPT_SIZE_ONLY Select_size<size>
 123
 124 #define SELECT_SIZE_ENDIAN_NAME(size, big_endian)
 125 #define SELECT_SIZE_ENDIAN(size, big_endian) \
 126   , Select_size_endian<size, big_endian>()
 127 #define SELECT_SIZE_ENDIAN_ONLY(size, big_endian) \
 128   Select_size_endian<size, big_endian>()
 129 #define ACCEPT_SIZE_ENDIAN , Select_size_endian<size, big_endian>
 130 #define ACCEPT_SIZE_ENDIAN_ONLY Select_size_endian<size, big_endian>
 131
 132 #endif // !defined(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS)
 133
 134 } // End namespace gold.
 135
 136 namespace gold
 137 {
 138
 139 class General_options;
 140 class Command_line;
 141 class Input_argument_list;
 142 class Dirsearch;
 143 class Input_objects;
 144 class Symbol_table;
 145 class Layout;
 146 class Workqueue;
 147 class Output_file;
 148
 149 // The name of the program as used in error messages.
 150 extern const char* program_name;
 151
 152 // This function is called to exit the program.  Status is true to
 153 // exit success (0) and false to exit failure (1).
 154 extern void
 155 gold_exit(bool status) ATTRIBUTE_NORETURN;
 156
 157 // This function is called to emit an unexpected error message and a
 158 // newline, and then exit with failure.  If PERRNO is true, it reports
 159 // the error in errno.
 160 extern void
 161 gold_fatal(const char* msg, bool perrno) ATTRIBUTE_NORETURN;
 162
 163 // This is function is called in some cases if we run out of memory.
 164 extern void
 165 gold_nomem() ATTRIBUTE_NORETURN;
 166
 167 // This macro and function are used in cases which can not arise if
 168 // the code is written correctly.
 169
 170 #define gold_unreachable() \
 171   (gold::do_gold_unreachable(__FILE__, __LINE__, __FUNCTION__))
 172
 173 extern void do_gold_unreachable(const char*, int, const char*)
 174   ATTRIBUTE_NORETURN;
 175
 176 // Assertion check.
 177
 178 #define gold_assert(expr) ((void)(!(expr) ? gold_unreachable(), 0 : 0))
 179
 180 // Queue up the first set of tasks.
 181 extern void
 182 queue_initial_tasks(const General_options&,
 183                     const Dirsearch&,
 184                     const Command_line&,
 185                     Workqueue*,
 186                     Input_objects*,
 187                     Symbol_table*,
 188                     Layout*);
 189
 190 // Queue up the middle set of tasks.
 191 extern void
 192 queue_middle_tasks(const General_options&,
 193                    const Input_objects*,
 194                    Symbol_table*,
 195                    Layout*,
 196                    Workqueue*);
 197
 198 // Queue up the final set of tasks.
 199 extern void
 200 queue_final_tasks(const General_options&,
 201                   const Input_objects*,
 202                   const Symbol_table*,
 203                   const Layout*,
 204                   Workqueue*,
 205                   Output_file* of);
 206
 207 } // End namespace gold.
 208
 209 #endif // !defined(GOLD_GOLD_H)