ld/ldemul.c

   1 /* ldemul.c -- clearing house for ld emulation states
   2    Copyright (C) 1991, 1993 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
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #include "bfd.h"
  21 #include "sysdep.h"
  22
  23 #include "config.h"
  24 #include "ld.h"
  25 #include "ldemul.h"
  26 #include "ldmisc.h"
  27 #include "ldexp.h"
  28 #include "ldlang.h"
  29 #include "ldfile.h"
  30 #include "ldmain.h"
  31 #include "ldemul-list.h"
  32
  33 ld_emulation_xfer_type *ld_emulation;
  34
  35 void
  36 ldemul_hll(name)
  37      char *name;
  38 {
  39   ld_emulation->hll(name);
  40 }
  41
  42
  43 void ldemul_syslib(name)
  44      char *name;
  45 {
  46   ld_emulation->syslib(name);
  47 }
  48
  49 void
  50 ldemul_after_parse()
  51 {
  52   ld_emulation->after_parse();
  53 }
  54
  55 void
  56 ldemul_before_parse()
  57 {
  58   ld_emulation->before_parse();
  59 }
  60
  61 void
  62 ldemul_after_open ()
  63 {
  64   ld_emulation->after_open ();
  65 }
  66
  67 void
  68 ldemul_after_allocation()
  69 {
  70   ld_emulation->after_allocation();
  71 }
  72
  73 void
  74 ldemul_before_allocation()
  75 {
  76   if (ld_emulation->before_allocation)
  77     ld_emulation->before_allocation();
  78 }
  79
  80
  81 void
  82 ldemul_set_output_arch()
  83 {
  84   ld_emulation->set_output_arch();
  85 }
  86
  87 void
  88 ldemul_finish()
  89 {
  90   if (ld_emulation->finish)
  91     ld_emulation->finish();
  92 }
  93
  94 void
  95 ldemul_create_output_section_statements()
  96 {
  97   if (ld_emulation->create_output_section_statements)
  98     ld_emulation->create_output_section_statements();
  99 }
 100
 101 char *
 102 ldemul_get_script(isfile)
 103      int *isfile;
 104 {
 105   return ld_emulation->get_script(isfile);
 106 }
 107
 108 boolean
 109 ldemul_open_dynamic_archive (arch, entry)
 110      const char *arch;
 111      lang_input_statement_type *entry;
 112 {
 113   if (ld_emulation->open_dynamic_archive)
 114     return (*ld_emulation->open_dynamic_archive) (arch, entry);
 115   return false;
 116 }
 117
 118 boolean
 119 ldemul_place_orphan (file, s)
 120      lang_input_statement_type *file;
 121      asection *s;
 122 {
 123   if (ld_emulation->place_orphan)
 124     return (*ld_emulation->place_orphan) (file, s);
 125   return false;
 126 }
 127
 128 char *
 129 ldemul_choose_target()
 130 {
 131   return ld_emulation->choose_target();
 132 }
 133
 134 /* The default choose_target function.  */
 135
 136 char *
 137 ldemul_default_target()
 138 {
 139   char *from_outside = getenv(TARGET_ENVIRON);
 140   if (from_outside != (char *)NULL)
 141     return from_outside;
 142   return ld_emulation->target_name;
 143 }
 144
 145 void
 146 after_parse_default()
 147 {
 148
 149 }
 150
 151 void
 152 after_open_default ()
 153 {
 154 }
 155
 156 void
 157 after_allocation_default()
 158 {
 159
 160 }
 161
 162 void
 163 before_allocation_default()
 164 {
 165
 166 }
 167
 168 void
 169 set_output_arch_default()
 170 {
 171   /* Set the output architecture and machine if possible */
 172   bfd_set_arch_mach(output_bfd,
 173                     ldfile_output_architecture, ldfile_output_machine);
 174 }
 175
 176 /*ARGSUSED*/
 177 void
 178 syslib_default(ignore)
 179      char  *ignore;
 180 {
 181   info_msg ("%S SYSLIB ignored\n");
 182 }
 183
 184 /*ARGSUSED*/
 185 void
 186 hll_default(ignore)
 187      char  *ignore;
 188 {
 189   info_msg ("%S HLL ignored\n");
 190 }
 191
 192 ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST };
 193
 194 void
 195 ldemul_choose_mode(target)
 196      char *target;
 197 {
 198     ld_emulation_xfer_type **eptr = ld_emulations;
 199     /* Ignore "gld" prefix. */
 200     if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd')
 201         target += 3;
 202     for (; *eptr; eptr++)
 203       {
 204         if (strcmp(target, (*eptr)->emulation_name) == 0)
 205           {
 206             ld_emulation = *eptr;
 207             return;
 208           }
 209       }
 210     einfo("%P%F: unrecognised emulation mode: %s\n",target);
 211 }
 212
 213 void
 214 ldemul_list_emulations (f)
 215      FILE *f;
 216 {
 217   ld_emulation_xfer_type **eptr = ld_emulations;
 218   boolean first = true;
 219
 220   for (; *eptr; eptr++)
 221     {
 222       if (first)
 223         first = false;
 224       else
 225         fprintf (f, " ");
 226       fprintf (f, "%s", (*eptr)->emulation_name);
 227     }
 228 }