ld/ld.h

   1 /* ld.h -- general linker header file
   2    Copyright (C) 1991, 93, 94, 95, 1996 Free Software Foundation, Inc.
   3
   4    This file is part of GLD, the Gnu Linker.
   5
   6    GLD is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    GLD is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GLD; see the file COPYING.  If not, write to the Free
  18    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  19    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
  88   /* If true, force generation of a file with a .exe file. */
  89   boolean force_exe_suffix;
  90
  91   /* If true, generate a cross reference report.  */
  92   boolean cref;
  93 } args_type;
  94
  95 extern args_type command_line;
  96
  97 typedef int token_code_type;
  98
  99 typedef struct
 100 {
 101   bfd_size_type specified_data_size;
 102   boolean magic_demand_paged;
 103   boolean make_executable;
 104
 105   /* If true, doing a dynamic link.  */
 106   boolean dynamic_link;
 107
 108   /* If true, build constructors.  */
 109   boolean build_constructors;
 110
 111   /* If true, warn about any constructors.  */
 112   boolean warn_constructors;
 113
 114   /* If true, warn about merging common symbols with others.  */
 115   boolean warn_common;
 116
 117   /* If true, only warn once about a particular undefined symbol.  */
 118   boolean warn_once;
 119
 120   /* If true, warn if multiple global-pointers are needed (Alpha
 121      only).  */
 122   boolean warn_multiple_gp;
 123
 124   boolean sort_common;
 125
 126   boolean text_read_only;
 127
 128   char *map_filename;
 129   FILE *map_file;
 130
 131   boolean stats;
 132
 133   int split_by_reloc;
 134   boolean split_by_file;
 135 } ld_config_type;
 136
 137 extern ld_config_type config;
 138
 139 typedef enum
 140 {
 141   lang_first_phase_enum,
 142   lang_allocating_phase_enum,
 143   lang_final_phase_enum
 144 } lang_phase_type;
 145
 146 extern boolean had_script;
 147 extern boolean force_make_executable;
 148
 149 /* Non-zero if we are processing a --defsym from the command line.  */
 150 extern int parsing_defsym;
 151
 152 extern int yyparse PARAMS ((void));
 153
 154 extern void add_cref PARAMS ((const char *, bfd *, asection *, bfd_vma));
 155 extern void output_cref PARAMS ((FILE *));
 156
 157 #endif