ld/ld.h

   1 /* ld.h -- general linker header file
   2    Copyright (C) 1991, 93, 94, 95, 96, 97, 98, 1999
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GLD, the Gnu Linker.
   6
   7    GLD is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    GLD is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GLD; see the file COPYING.  If not, write to the Free
  19    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20    02111-1307, USA.  */
  21
  22 #ifndef LD_H
  23 #define LD_H
  24
  25 #ifdef HAVE_LOCALE_H
  26 # include <locale.h>
  27 #endif
  28
  29 #ifdef ENABLE_NLS
  30 # include <libintl.h>
  31 # define _(String) gettext (String)
  32 # ifdef gettext_noop
  33 #  define N_(String) gettext_noop (String)
  34 # else
  35 #  define N_(String) (String)
  36 # endif
  37 #else
  38 /* Stubs that do something close enough.  */
  39 # define textdomain(String) (String)
  40 # define gettext(String) (String)
  41 # define dgettext(Domain,Message) (Message)
  42 # define dcgettext(Domain,Message,Type) (Message)
  43 # define bindtextdomain(Domain,Directory) (Domain)
  44 # define _(String) (String)
  45 # define N_(String) (String)
  46 #endif
  47
  48 /* Look in this environment name for the linker to pretend to be */
  49 #define EMULATION_ENVIRON "LDEMULATION"
  50 /* If in there look for the strings: */
  51
  52 /* Look in this variable for a target format */
  53 #define TARGET_ENVIRON "GNUTARGET"
  54
  55 /* Input sections which are put in a section of this name are actually
  56    discarded.  */
  57 #define DISCARD_SECTION_NAME "/DISCARD/"
  58
  59 /* A wildcard specification.  This is only used in ldgram.y, but it
  60    winds up in ldgram.h, so we need to define it outside.  */
  61
  62 struct wildcard_spec
  63 {
  64   const char *name;
  65   const char *exclude_name;
  66   boolean sorted;
  67 };
  68
  69 /* Extra information we hold on sections */
  70 typedef struct  user_section_struct
  71 {
  72   /* Pointer to the section where this data will go */
  73   struct lang_input_statement_struct *file;
  74 } section_userdata_type;
  75
  76
  77 #define get_userdata(x) ((x)->userdata)
  78
  79 #define BYTE_SIZE       (1)
  80 #define SHORT_SIZE      (2)
  81 #define LONG_SIZE       (4)
  82 #define QUAD_SIZE       (8)
  83
  84 /* ALIGN macro changed to ALIGN_N to avoid      */
  85 /* conflict in /usr/include/machine/machparam.h */
  86 /* WARNING: If THIS is a 64 bit address and BOUNDARY is a 32 bit int,
  87    you must coerce boundary to the same type as THIS.
  88    ??? Is there a portable way to avoid this.  */
  89 #define ALIGN_N(this, boundary) \
  90   ((( (this) + ((boundary) -1)) & (~((boundary)-1))))
  91
  92 typedef struct
  93 {
  94   /* 1 => assign space to common symbols even if `relocatable_output'.  */
  95   boolean force_common_definition;
  96   boolean relax;
  97
  98   /* Name of runtime interpreter to invoke.  */
  99   char *interpreter;
 100
 101   /* Name to give runtime libary from the -soname argument.  */
 102   char *soname;
 103
 104   /* Runtime library search path from the -rpath argument.  */
 105   char *rpath;
 106
 107   /* Link time runtime library search path from the -rpath-link
 108      argument.  */
 109   char *rpath_link;
 110
 111   /* Big or little endian as set on command line.  */
 112   enum { ENDIAN_UNSET = 0, ENDIAN_BIG, ENDIAN_LITTLE } endian;
 113
 114   /* If true, export all symbols in the dynamic symbol table of an ELF
 115      executable.  */
 116   boolean export_dynamic;
 117
 118   /* If true, build MIPS embedded PIC relocation tables in the output
 119      file.  */
 120   boolean embedded_relocs;
 121
 122   /* If true, force generation of a file with a .exe file. */
 123   boolean force_exe_suffix;
 124
 125   /* If true, generate a cross reference report.  */
 126   boolean cref;
 127
 128   /* If true (which is the default), warn about mismatched input
 129      files.  */
 130   boolean warn_mismatch;
 131
 132   /* Remove unreferenced sections?  */
 133   boolean gc_sections;
 134
 135   /* Name of shared object whose symbol table should be filtered with
 136      this shared object.  From the --filter option.  */
 137   char *filter_shlib;
 138
 139   /* Name of shared object for whose symbol table this shared object
 140      is an auxiliary filter.  From the --auxiliary option.  */
 141   char **auxiliary_filters;
 142
 143   /* A version symbol to be applied to the symbol names found in the
 144      .exports sections.  */
 145   char *version_exports_section;
 146
 147   /* If true (the default) check section addresses, once compute,
 148      fpor overlaps.  */
 149   boolean check_section_addresses;
 150
 151 } args_type;
 152
 153 extern args_type command_line;
 154
 155 typedef int token_code_type;
 156
 157 typedef struct
 158 {
 159   bfd_size_type specified_data_size;
 160   boolean magic_demand_paged;
 161   boolean make_executable;
 162
 163   /* If true, doing a dynamic link.  */
 164   boolean dynamic_link;
 165
 166   /* If true, -shared is supported.  */
 167   /* ??? A better way to do this is perhaps to define this in the
 168      ld_emulation_xfer_struct since this is really a target dependent
 169      parameter.  */
 170   boolean has_shared;
 171
 172   /* If true, build constructors.  */
 173   boolean build_constructors;
 174
 175   /* If true, warn about any constructors.  */
 176   boolean warn_constructors;
 177
 178   /* If true, warn about merging common symbols with others.  */
 179   boolean warn_common;
 180
 181   /* If true, only warn once about a particular undefined symbol.  */
 182   boolean warn_once;
 183
 184   /* If true, warn if multiple global-pointers are needed (Alpha
 185      only).  */
 186   boolean warn_multiple_gp;
 187
 188   /* If true, warn if the starting address of an output section
 189      changes due to the alignment of an input section.  */
 190   boolean warn_section_align;
 191
 192   boolean sort_common;
 193
 194   boolean text_read_only;
 195
 196   char *map_filename;
 197   FILE *map_file;
 198
 199   boolean stats;
 200
 201   int split_by_reloc;
 202   boolean split_by_file;
 203 } ld_config_type;
 204
 205 extern ld_config_type config;
 206
 207 typedef enum
 208 {
 209   lang_first_phase_enum,
 210   lang_allocating_phase_enum,
 211   lang_final_phase_enum
 212 } lang_phase_type;
 213
 214 extern boolean had_script;
 215 extern boolean force_make_executable;
 216
 217 /* Non-zero if we are processing a --defsym from the command line.  */
 218 extern int parsing_defsym;
 219
 220 extern int yyparse PARAMS ((void));
 221
 222 extern void add_cref PARAMS ((const char *, bfd *, asection *, bfd_vma));
 223 extern void output_cref PARAMS ((FILE *));
 224 extern void check_nocrossrefs PARAMS ((void));
 225
 226 #endif