1 /* mri.c -- handle MRI style linker scripts
2 Copyright (C) 1991-2018 Free Software Foundation, Inc.
3 Contributed by Steve Chamberlain <sac@cygnus.com>.
5 This file is part of the GNU Binutils.
7 This program 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 3 of the License, or
10 (at your option) any later version.
12 This program 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.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
23 /* This bit does the tree decoration when MRI style link scripts
34 #include "libiberty.h"
36 struct section_name_struct {
37 struct section_name_struct *next;
46 static unsigned int symbol_truncate = 10000;
47 static etree_type *base; /* Relocation base - or null */
49 static struct section_name_struct *order;
50 static struct section_name_struct *only_load;
51 static struct section_name_struct *address;
52 static struct section_name_struct *alias;
54 static struct section_name_struct *alignment;
55 static struct section_name_struct *subalignment;
57 static struct section_name_struct **
58 lookup (const char *name, struct section_name_struct **list)
60 struct section_name_struct **ptr = list;
64 if (strcmp (name, (*ptr)->name) == 0)
65 /* If this is a match, delete it, we only keep the last instance
69 ptr = &((*ptr)->next);
72 *ptr = (struct section_name_struct *)
73 xmalloc (sizeof (struct section_name_struct));
78 mri_add_to_list (struct section_name_struct **list,
85 struct section_name_struct **ptr = lookup (name, list);
90 (*ptr)->ok_to_load = 0;
91 (*ptr)->alias = zalias;
92 (*ptr)->align = align;
93 (*ptr)->subalign = subalign;
97 mri_output_section (const char *name, etree_type *vma)
99 mri_add_to_list (&address, name, vma, 0, 0, 0);
102 /* If any ABSOLUTE <name> are in the script, only load those files
106 mri_only_load (const char *name)
108 mri_add_to_list (&only_load, name, 0, 0, 0, 0);
112 mri_base (etree_type *exp)
117 static int done_tree = 0;
125 /* Now build the statements for the ldlang machine. */
127 /* Attach the addresses of any which have addresses,
128 and add the ones not mentioned. */
131 struct section_name_struct *alist;
132 struct section_name_struct *olist;
137 for (alist = address;
143 for (olist = order; done == 0 && olist != NULL; olist = olist->next)
145 if (strcmp (alist->name, olist->name) == 0)
147 olist->vma = alist->vma;
154 /* Add this onto end of order list. */
155 mri_add_to_list (&order, alist->name, alist->vma, 0, 0, 0);
160 /* If we're only supposed to load a subset of them in, then prune
162 if (only_load != NULL)
164 struct section_name_struct *ptr1;
165 struct section_name_struct *ptr2;
170 /* See if this name is in the list, if it is then we can load it. */
171 for (ptr1 = only_load; ptr1; ptr1 = ptr1->next)
172 for (ptr2 = order; ptr2; ptr2 = ptr2->next)
173 if (strcmp (ptr2->name, ptr1->name) == 0)
174 ptr2->ok_to_load = 1;
178 /* No only load list, so everything is ok to load. */
179 struct section_name_struct *ptr;
181 for (ptr = order; ptr; ptr = ptr->next)
185 /* Create the order of sections to load. */
188 /* Been told to output the sections in a certain order. */
189 struct section_name_struct *p = order;
193 struct section_name_struct *aptr;
194 etree_type *align = 0;
195 etree_type *subalign = 0;
196 struct wildcard_list *tmp;
198 /* See if an alignment has been specified. */
199 for (aptr = alignment; aptr; aptr = aptr->next)
200 if (strcmp (aptr->name, p->name) == 0)
203 for (aptr = subalignment; aptr; aptr = aptr->next)
204 if (strcmp (aptr->name, p->name) == 0)
205 subalign = aptr->subalign;
208 base = p->vma ? p->vma : exp_nameop (NAME, ".");
210 lang_enter_output_section_statement (p->name, base,
211 p->ok_to_load ? normal_section : noload_section,
212 align, subalign, NULL, 0, 0);
214 tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
216 tmp->spec.name = p->name;
217 tmp->spec.exclude_name_list = NULL;
218 tmp->spec.sorted = none;
219 tmp->spec.section_flag_list = NULL;
220 lang_add_wild (NULL, tmp, FALSE);
222 /* If there is an alias for this section, add it too. */
223 for (aptr = alias; aptr; aptr = aptr->next)
224 if (strcmp (aptr->alias, p->name) == 0)
226 tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
228 tmp->spec.name = aptr->name;
229 tmp->spec.exclude_name_list = NULL;
230 tmp->spec.sorted = none;
231 tmp->spec.section_flag_list = NULL;
232 lang_add_wild (NULL, tmp, FALSE);
235 lang_leave_output_section_statement (0, "*default*", NULL, NULL);
245 mri_load (const char *name)
248 lang_add_input_file (name, lang_input_file_is_file_enum, NULL);
252 mri_order (const char *name)
254 mri_add_to_list (&order, name, 0, 0, 0, 0);
258 mri_alias (const char *want, const char *is, int isn)
264 /* Some sections are digits. */
265 sprintf (buf, "%d", isn);
273 mri_add_to_list (&alias, is, 0, want, 0, 0);
277 mri_name (const char *name)
279 lang_add_output (name, 1);
283 mri_format (const char *name)
285 if (strcmp (name, "S") == 0)
286 lang_add_output_format ("srec", NULL, NULL, 1);
288 else if (strcmp (name, "COFF") == 0)
289 lang_add_output_format ("coff-m68k", NULL, NULL, 1);
292 einfo (_("%F%P: unknown format type %s\n"), name);
296 mri_public (const char *name, etree_type *exp)
298 lang_add_assignment (exp_assign (name, exp, FALSE));
302 mri_align (const char *name, etree_type *exp)
304 mri_add_to_list (&alignment, name, 0, 0, exp, 0);
308 mri_alignmod (const char *name, etree_type *exp)
310 mri_add_to_list (&subalignment, name, 0, 0, 0, exp);
314 mri_truncate (unsigned int exp)
316 symbol_truncate = exp;