ld/ld.h

   1 /* ld.h -
   2
   3    Copyright (C) 1991, 1993, 1994, 1995 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
  19    the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef LD_H
  22 #define LD_H
  23
  24 /* Look in this environment name for the linker to pretend to be */
  25 #define EMULATION_ENVIRON "LDEMULATION"
  26 /* If in there look for the strings: */
  27
  28 /* Look in this variable for a target format */
  29 #define TARGET_ENVIRON "GNUTARGET"
  30
  31 /* Input sections which are put in a section of this name are actually
  32    discarded.  */
  33 #define DISCARD_SECTION_NAME "/DISCARD/"
  34
  35 /* Extra information we hold on sections */
  36 typedef struct  user_section_struct
  37 {
  38   /* Pointer to the section where this data will go */
  39   struct lang_input_statement_struct *file;
  40 } section_userdata_type;
  41
  42
  43 #define get_userdata(x) ((x)->userdata)
  44
  45 #define BYTE_SIZE       (1)
  46 #define SHORT_SIZE      (2)
  47 #define LONG_SIZE       (4)
  48 #define QUAD_SIZE       (8)
  49
  50 /* ALIGN macro changed to ALIGN_N to avoid      */
  51 /* conflict in /usr/include/machine/machparam.h */
  52 /* WARNING: If THIS is a 64 bit address and BOUNDARY is a 32 bit int,
  53    you must coerce boundary to the same type as THIS.
  54    ??? Is there a portable way to avoid this.  */
  55 #define ALIGN_N(this, boundary) \
  56   ((( (this) + ((boundary) -1)) & (~((boundary)-1))))
  57
  58 typedef struct
  59 {
  60   /* 1 => assign space to common symbols even if `relocatable_output'.  */
  61   boolean force_common_definition;
  62   boolean relax;
  63
  64   /* Name of runtime interpreter to invoke.  */
  65   char *interpreter;
  66
  67   /* Name to give runtime libary from the -soname argument.  */
  68   char *soname;
  69
  70   /* Runtime library search path from the -rpath argument.  */
  71   char *rpath;
  72
  73   /* Link time runtime library search path from the -rpath-link
  74      argument.  */
  75   char *rpath_link;
  76
  77   /* Big or little endian as set on command line.  */
  78   enum { ENDIAN_UNSET = 0, ENDIAN_BIG, ENDIAN_LITTLE } endian;
  79
  80   /* If true, export all symbols in the dynamic symbol table of an ELF
  81      executable.  */
  82   boolean export_dynamic;
  83
  84   /* If true, build MIPS embedded PIC relocation tables in the output
  85      file.  */
  86   boolean embedded_relocs;
  87 } args_type;
  88
  89 extern args_type command_line;
  90
  91 typedef int token_code_type;
  92
  93 typedef struct
  94 {
  95   bfd_size_type specified_data_size;
  96   boolean magic_demand_paged;
  97   boolean make_executable;
  98
  99   /* If true, doing a dynamic link.  */
 100   boolean dynamic_link;
 101
 102   /* If true, build constructors.  */
 103   boolean build_constructors;
 104
 105   /* If true, warn about any constructors.  */
 106   boolean warn_constructors;
 107
 108   /* If true, warn about merging common symbols with others.  */
 109   boolean warn_common;
 110
 111   /* If true, only warn once about a particular undefined symbol.  */
 112   boolean warn_once;
 113
 114   /* If true, warn if multiple global-pointers are needed (Alpha
 115      only).  */
 116   boolean warn_multiple_gp;
 117
 118   boolean sort_common;
 119
 120   boolean text_read_only;
 121
 122   char *map_filename;
 123   FILE *map_file;
 124
 125   boolean stats;
 126
 127   int split_by_reloc;
 128   boolean split_by_file;
 129 } ld_config_type;
 130
 131 extern ld_config_type config;
 132
 133 typedef enum
 134 {
 135   lang_first_phase_enum,
 136   lang_allocating_phase_enum,
 137   lang_final_phase_enum
 138 } lang_phase_type;
 139
 140 extern boolean had_script;
 141 extern boolean force_make_executable;
 142
 143 /* Non-zero if we are processing a --defsym from the command line.  */
 144 extern int parsing_defsym;
 145
 146 extern int yyparse PARAMS ((void));
 147
 148 #endif