* elf32-spu.c (build_stub): Fix malloc under-allocation.
[binutils.git] / ld / mri.c
blob91b40dc779e6f64fa8d4d60051464ebc90a1d5fb
1 /* mri.c -- handle MRI style linker scripts
2 Copyright 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005, 2007, 2011 Free Software Foundation, Inc.
4 Contributed by Steve Chamberlain <sac@cygnus.com>.
6 This file is part of the GNU Binutils.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
24 /* This bit does the tree decoration when MRI style link scripts
25 are parsed. */
27 #include "sysdep.h"
28 #include "bfd.h"
29 #include "ld.h"
30 #include "ldexp.h"
31 #include "ldlang.h"
32 #include "ldmisc.h"
33 #include "mri.h"
34 #include <ldgram.h>
35 #include "libiberty.h"
37 struct section_name_struct {
38 struct section_name_struct *next;
39 const char *name;
40 const char *alias;
41 etree_type *vma;
42 etree_type *align;
43 etree_type *subalign;
44 int ok_to_load;
47 static unsigned int symbol_truncate = 10000;
48 static struct section_name_struct *order;
49 static struct section_name_struct *only_load;
50 static struct section_name_struct *address;
51 static struct section_name_struct *alias;
53 static struct section_name_struct *alignment;
54 static struct section_name_struct *subalignment;
56 static struct section_name_struct **
57 lookup (const char *name, struct section_name_struct **list)
59 struct section_name_struct **ptr = list;
61 while (*ptr)
63 if (strcmp (name, (*ptr)->name) == 0)
64 /* If this is a match, delete it, we only keep the last instance
65 of any name. */
66 *ptr = (*ptr)->next;
67 else
68 ptr = &((*ptr)->next);
71 *ptr = (struct section_name_struct *)
72 xmalloc (sizeof (struct section_name_struct));
73 return ptr;
76 static void
77 mri_add_to_list (struct section_name_struct **list,
78 const char *name,
79 etree_type *vma,
80 const char *zalias,
81 etree_type *align,
82 etree_type *subalign)
84 struct section_name_struct **ptr = lookup (name, list);
86 (*ptr)->name = name;
87 (*ptr)->vma = vma;
88 (*ptr)->next = NULL;
89 (*ptr)->ok_to_load = 0;
90 (*ptr)->alias = zalias;
91 (*ptr)->align = align;
92 (*ptr)->subalign = subalign;
95 void
96 mri_output_section (const char *name, etree_type *vma)
98 mri_add_to_list (&address, name, vma, 0, 0, 0);
101 /* If any ABSOLUTE <name> are in the script, only load those files
102 marked thus. */
104 void
105 mri_only_load (const char *name)
107 mri_add_to_list (&only_load, name, 0, 0, 0, 0);
110 void
111 mri_base (etree_type *exp)
113 base = exp;
116 static int done_tree = 0;
118 void
119 mri_draw_tree (void)
121 if (done_tree)
122 return;
124 /* Now build the statements for the ldlang machine. */
126 /* Attach the addresses of any which have addresses,
127 and add the ones not mentioned. */
128 if (address != NULL)
130 struct section_name_struct *alist;
131 struct section_name_struct *olist;
133 if (order == NULL)
134 order = address;
136 for (alist = address;
137 alist != NULL;
138 alist = alist->next)
140 int done = 0;
142 for (olist = order; done == 0 && olist != NULL; olist = olist->next)
144 if (strcmp (alist->name, olist->name) == 0)
146 olist->vma = alist->vma;
147 done = 1;
151 if (!done)
153 /* Add this onto end of order list. */
154 mri_add_to_list (&order, alist->name, alist->vma, 0, 0, 0);
159 /* If we're only supposed to load a subset of them in, then prune
160 the list. */
161 if (only_load != NULL)
163 struct section_name_struct *ptr1;
164 struct section_name_struct *ptr2;
166 if (order == NULL)
167 order = only_load;
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;
175 else
177 /* No only load list, so everything is ok to load. */
178 struct section_name_struct *ptr;
180 for (ptr = order; ptr; ptr = ptr->next)
181 ptr->ok_to_load = 1;
184 /* Create the order of sections to load. */
185 if (order != NULL)
187 /* Been told to output the sections in a certain order. */
188 struct section_name_struct *p = order;
190 while (p)
192 struct section_name_struct *aptr;
193 etree_type *align = 0;
194 etree_type *subalign = 0;
195 struct wildcard_list *tmp;
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;
202 for (aptr = subalignment; aptr; aptr = aptr->next)
203 if (strcmp (aptr->name, p->name) == 0)
204 subalign = aptr->subalign;
206 if (base == 0)
207 base = p->vma ? p->vma : exp_nameop (NAME, ".");
209 lang_enter_output_section_statement (p->name, base,
210 p->ok_to_load ? normal_section : noload_section,
211 align, subalign, NULL, 0);
212 base = 0;
213 tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
214 tmp->next = NULL;
215 tmp->spec.name = p->name;
216 tmp->spec.exclude_name_list = NULL;
217 tmp->spec.sorted = none;
218 tmp->spec.section_flag_list = NULL;
219 lang_add_wild (NULL, tmp, FALSE);
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)
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;
229 tmp->spec.sorted = none;
230 tmp->spec.section_flag_list = NULL;
231 lang_add_wild (NULL, tmp, FALSE);
234 lang_leave_output_section_statement (0, "*default*", NULL, NULL);
236 p = p->next;
240 done_tree = 1;
243 void
244 mri_load (const char *name)
246 base = 0;
247 lang_add_input_file (name, lang_input_file_is_file_enum, NULL);
250 void
251 mri_order (const char *name)
253 mri_add_to_list (&order, name, 0, 0, 0, 0);
256 void
257 mri_alias (const char *want, const char *is, int isn)
259 if (!is)
261 char buf[20];
263 /* Some sections are digits. */
264 sprintf (buf, "%d", isn);
266 is = xstrdup (buf);
268 if (is == NULL)
269 abort ();
272 mri_add_to_list (&alias, is, 0, want, 0, 0);
275 void
276 mri_name (const char *name)
278 lang_add_output (name, 1);
281 void
282 mri_format (const char *name)
284 if (strcmp (name, "S") == 0)
285 lang_add_output_format ("srec", NULL, NULL, 1);
287 else if (strcmp (name, "IEEE") == 0)
288 lang_add_output_format ("ieee", NULL, NULL, 1);
290 else if (strcmp (name, "COFF") == 0)
291 lang_add_output_format ("coff-m68k", NULL, NULL, 1);
293 else
294 einfo (_("%P%F: unknown format type %s\n"), name);
297 void
298 mri_public (const char *name, etree_type *exp)
300 lang_add_assignment (exp_assign (name, exp));
303 void
304 mri_align (const char *name, etree_type *exp)
306 mri_add_to_list (&alignment, name, 0, 0, exp, 0);
309 void
310 mri_alignmod (const char *name, etree_type *exp)
312 mri_add_to_list (&subalignment, name, 0, 0, 0, exp);
315 void
316 mri_truncate (unsigned int exp)
318 symbol_truncate = exp;