gold/gold.h

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