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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [ld/] [mri.c] - Blame information for rev 299

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1 145 khays
/* mri.c -- handle MRI style linker scripts
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   Copyright 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000, 2001,
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   2002, 2003, 2004, 2005, 2007, 2011 Free Software Foundation, Inc.
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   Contributed by Steve Chamberlain <sac@cygnus.com>.
5
 
6
   This file is part of the GNU Binutils.
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8
   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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18
   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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   MA 02110-1301, USA.  */
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23
 
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/* This bit does the tree decoration when MRI style link scripts
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   are parsed.  */
26
 
27
#include "sysdep.h"
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#include "bfd.h"
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#include "ld.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldmisc.h"
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#include "mri.h"
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#include <ldgram.h>
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#include "libiberty.h"
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struct section_name_struct {
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  struct section_name_struct *next;
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  const char *name;
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  const char *alias;
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  etree_type *vma;
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  etree_type *align;
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  etree_type *subalign;
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  int ok_to_load;
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};
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static unsigned int symbol_truncate = 10000;
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static struct section_name_struct *order;
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static struct section_name_struct *only_load;
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static struct section_name_struct *address;
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static struct section_name_struct *alias;
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static struct section_name_struct *alignment;
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static struct section_name_struct *subalignment;
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56
static struct section_name_struct **
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lookup (const char *name, struct section_name_struct **list)
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{
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  struct section_name_struct **ptr = list;
60
 
61
  while (*ptr)
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    {
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      if (strcmp (name, (*ptr)->name) == 0)
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        /* If this is a match, delete it, we only keep the last instance
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           of any name.  */
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        *ptr = (*ptr)->next;
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      else
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        ptr = &((*ptr)->next);
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    }
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  *ptr = (struct section_name_struct *)
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      xmalloc (sizeof (struct section_name_struct));
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  return ptr;
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}
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static void
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mri_add_to_list (struct section_name_struct **list,
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                 const char *name,
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                 etree_type *vma,
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                 const char *zalias,
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                 etree_type *align,
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                 etree_type *subalign)
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{
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  struct section_name_struct **ptr = lookup (name, list);
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  (*ptr)->name = name;
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  (*ptr)->vma = vma;
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  (*ptr)->next = NULL;
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  (*ptr)->ok_to_load = 0;
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  (*ptr)->alias = zalias;
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  (*ptr)->align = align;
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  (*ptr)->subalign = subalign;
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}
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95
void
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mri_output_section (const char *name, etree_type *vma)
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{
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  mri_add_to_list (&address, name, vma, 0, 0, 0);
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}
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101
/* If any ABSOLUTE <name> are in the script, only load those files
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   marked thus.  */
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104
void
105
mri_only_load (const char *name)
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{
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  mri_add_to_list (&only_load, name, 0, 0, 0, 0);
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}
109
 
110
void
111
mri_base (etree_type *exp)
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{
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  base = exp;
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}
115
 
116
static int done_tree = 0;
117
 
118
void
119
mri_draw_tree (void)
120
{
121
  if (done_tree)
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    return;
123
 
124
  /* Now build the statements for the ldlang machine.  */
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  /* Attach the addresses of any which have addresses,
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     and add the ones not mentioned.  */
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  if (address != NULL)
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    {
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      struct section_name_struct *alist;
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      struct section_name_struct *olist;
132
 
133
      if (order == NULL)
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        order = address;
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      for (alist = address;
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           alist != NULL;
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           alist = alist->next)
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        {
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          int done = 0;
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          for (olist = order; done == 0 && olist != NULL; olist = olist->next)
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            {
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              if (strcmp (alist->name, olist->name) == 0)
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                {
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                  olist->vma = alist->vma;
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                  done = 1;
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                }
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            }
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          if (!done)
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            {
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              /* Add this onto end of order list.  */
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              mri_add_to_list (&order, alist->name, alist->vma, 0, 0, 0);
155
            }
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        }
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    }
158
 
159
  /* If we're only supposed to load a subset of them in, then prune
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     the list.  */
161
  if (only_load != NULL)
162
    {
163
      struct section_name_struct *ptr1;
164
      struct section_name_struct *ptr2;
165
 
166
      if (order == NULL)
167
        order = only_load;
168
 
169
      /* See if this name is in the list, if it is then we can load it.  */
170
      for (ptr1 = only_load; ptr1; ptr1 = ptr1->next)
171
        for (ptr2 = order; ptr2; ptr2 = ptr2->next)
172
          if (strcmp (ptr2->name, ptr1->name) == 0)
173
            ptr2->ok_to_load = 1;
174
    }
175
  else
176
    {
177
      /* No only load list, so everything is ok to load.  */
178
      struct section_name_struct *ptr;
179
 
180
      for (ptr = order; ptr; ptr = ptr->next)
181
        ptr->ok_to_load = 1;
182
    }
183
 
184
  /* Create the order of sections to load.  */
185
  if (order != NULL)
186
    {
187
      /* Been told to output the sections in a certain order.  */
188
      struct section_name_struct *p = order;
189
 
190
      while (p)
191
        {
192
          struct section_name_struct *aptr;
193
          etree_type *align = 0;
194
          etree_type *subalign = 0;
195
          struct wildcard_list *tmp;
196
 
197
          /* See if an alignment has been specified.  */
198
          for (aptr = alignment; aptr; aptr = aptr->next)
199
            if (strcmp (aptr->name, p->name) == 0)
200
              align = aptr->align;
201
 
202
          for (aptr = subalignment; aptr; aptr = aptr->next)
203
            if (strcmp (aptr->name, p->name) == 0)
204
              subalign = aptr->subalign;
205
 
206
          if (base == 0)
207
            base = p->vma ? p->vma : exp_nameop (NAME, ".");
208
 
209
          lang_enter_output_section_statement (p->name, base,
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                                               p->ok_to_load ? normal_section : noload_section,
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                                               align, subalign, NULL, 0);
212
          base = 0;
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          tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
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          tmp->next = NULL;
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          tmp->spec.name = p->name;
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          tmp->spec.exclude_name_list = NULL;
217
          tmp->spec.sorted = none;
218 157 khays
          tmp->spec.section_flag_list = NULL;
219 145 khays
          lang_add_wild (NULL, tmp, FALSE);
220
 
221
          /* If there is an alias for this section, add it too.  */
222
          for (aptr = alias; aptr; aptr = aptr->next)
223
            if (strcmp (aptr->alias, p->name) == 0)
224
              {
225
                tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
226
                tmp->next = NULL;
227
                tmp->spec.name = aptr->name;
228
                tmp->spec.exclude_name_list = NULL;
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                tmp->spec.sorted = none;
230 157 khays
                tmp->spec.section_flag_list = NULL;
231 145 khays
                lang_add_wild (NULL, tmp, FALSE);
232
              }
233
 
234
          lang_leave_output_section_statement (0, "*default*", NULL, NULL);
235
 
236
          p = p->next;
237
        }
238
    }
239
 
240
  done_tree = 1;
241
}
242
 
243
void
244
mri_load (const char *name)
245
{
246
  base = 0;
247
  lang_add_input_file (name, lang_input_file_is_file_enum, NULL);
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}
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250
void
251
mri_order (const char *name)
252
{
253
  mri_add_to_list (&order, name, 0, 0, 0, 0);
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}
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256
void
257
mri_alias (const char *want, const char *is, int isn)
258
{
259
  if (!is)
260
    {
261
      char buf[20];
262
 
263
      /* Some sections are digits.  */
264
      sprintf (buf, "%d", isn);
265
 
266
      is = xstrdup (buf);
267
 
268
      if (is == NULL)
269
        abort ();
270
    }
271
 
272
  mri_add_to_list (&alias, is, 0, want, 0, 0);
273
}
274
 
275
void
276
mri_name (const char *name)
277
{
278
  lang_add_output (name, 1);
279
}
280
 
281
void
282
mri_format (const char *name)
283
{
284
  if (strcmp (name, "S") == 0)
285
    lang_add_output_format ("srec", NULL, NULL, 1);
286
 
287
  else if (strcmp (name, "IEEE") == 0)
288
    lang_add_output_format ("ieee", NULL, NULL, 1);
289
 
290
  else if (strcmp (name, "COFF") == 0)
291
    lang_add_output_format ("coff-m68k", NULL, NULL, 1);
292
 
293
  else
294
    einfo (_("%P%F: unknown format type %s\n"), name);
295
}
296
 
297
void
298
mri_public (const char *name, etree_type *exp)
299
{
300
  lang_add_assignment (exp_assign (name, exp));
301
}
302
 
303
void
304
mri_align (const char *name, etree_type *exp)
305
{
306
  mri_add_to_list (&alignment, name, 0, 0, exp, 0);
307
}
308
 
309
void
310
mri_alignmod (const char *name, etree_type *exp)
311
{
312
  mri_add_to_list (&subalignment, name, 0, 0, 0, exp);
313
}
314
 
315
void
316
mri_truncate (unsigned int exp)
317
{
318
  symbol_truncate = exp;
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}

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