1 /* mri.c -- handle MRI style linker scripts
2 Copyright 1991, 92, 93, 94, 95, 96, 1997, 1998, 2000
3 Free Software Foundation, Inc.
5 This file is part of GLD, the Gnu Linker.
7 GLD 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 2, or (at your option)
12 GLD 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 GLD; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 This bit does the tree decoration when MRI style link scripts
25 Contributed by Steve Chamberlain <sac@cygnus.com>. */
35 #include "libiberty.h"
37 struct section_name_struct {
38 struct section_name_struct *next;
47 unsigned int symbol_truncate = 10000;
48 struct section_name_struct *order;
49 struct section_name_struct *only_load;
50 struct section_name_struct *address;
51 struct section_name_struct *alias;
53 struct section_name_struct *alignment;
54 struct section_name_struct *subalignment;
56 static struct section_name_struct **lookup
57 PARAMS ((const char *name, struct section_name_struct **list));
58 static void mri_add_to_list PARAMS ((struct section_name_struct **list,
59 const char *name, etree_type *vma,
60 const char *zalias, etree_type *align,
61 etree_type *subalign));
63 static struct section_name_struct **
66 struct section_name_struct **list;
68 struct section_name_struct **ptr = list;
72 if (strcmp (name, (*ptr)->name) == 0)
73 /* If this is a match, delete it, we only keep the last instance
77 ptr = &((*ptr)->next);
80 *ptr = (struct section_name_struct *) xmalloc (sizeof (struct section_name_struct));
85 mri_add_to_list (list, name, vma, zalias, align, subalign)
86 struct section_name_struct **list;
93 struct section_name_struct **ptr = lookup (name, list);
97 (*ptr)->next = (struct section_name_struct *) NULL;
98 (*ptr)->ok_to_load = 0;
99 (*ptr)->alias = zalias;
100 (*ptr)->align = align;
101 (*ptr)->subalign = subalign;
105 mri_output_section (name, vma)
109 mri_add_to_list (&address, name, vma, 0, 0, 0);
112 /* If any ABSOLUTE <name> are in the script, only load those files
119 mri_add_to_list (&only_load, name, 0, 0, 0, 0);
129 static int done_tree = 0;
137 #if 0 /* We don't bother with memory regions. */
138 /* Create the regions. */
140 lang_memory_region_type *r;
142 r = lang_memory_region_lookup("long");
143 r->current = r->origin = exp_get_vma (base, (bfd_vma)0, "origin",
144 lang_first_phase_enum);
145 r->length = (bfd_size_type) exp_get_vma (0, (bfd_vma) ~((bfd_size_type)0),
146 "length", lang_first_phase_enum);
150 /* Now build the statements for the ldlang machine. */
152 /* Attatch the addresses of any which have addresses,
153 and add the ones not mentioned. */
154 if (address != (struct section_name_struct *) NULL)
156 struct section_name_struct *alist;
157 struct section_name_struct *olist;
159 if (order == (struct section_name_struct *) NULL)
162 for (alist = address;
163 alist != (struct section_name_struct *) NULL;
169 done == 0 && olist != (struct section_name_struct *) NULL;
172 if (strcmp (alist->name, olist->name) == 0)
174 olist->vma = alist->vma;
181 /* Add this onto end of order list. */
182 mri_add_to_list (&order, alist->name, alist->vma, 0, 0, 0);
187 /* If we're only supposed to load a subset of them in, then prune
189 if (only_load != (struct section_name_struct *) NULL)
191 struct section_name_struct *ptr1;
192 struct section_name_struct *ptr2;
194 if (order == (struct section_name_struct *) NULL)
197 /* See if this name is in the list, if it is then we can load it. */
198 for (ptr1 = only_load; ptr1; ptr1 = ptr1->next)
199 for (ptr2 = order; ptr2; ptr2 = ptr2->next)
200 if (strcmp (ptr2->name, ptr1->name) == 0)
201 ptr2->ok_to_load = 1;
205 /* No only load list, so everything is ok to load. */
206 struct section_name_struct *ptr;
208 for (ptr = order; ptr; ptr = ptr->next)
212 /* Create the order of sections to load. */
213 if (order != (struct section_name_struct *) NULL)
215 /* Been told to output the sections in a certain order. */
216 struct section_name_struct *p = order;
220 struct section_name_struct *aptr;
221 etree_type *align = 0;
222 etree_type *subalign = 0;
224 /* See if an alignment has been specified. */
225 for (aptr = alignment; aptr; aptr = aptr->next)
226 if (strcmp (aptr->name, p->name) == 0)
229 for (aptr = subalignment; aptr; aptr = aptr->next)
230 if (strcmp (aptr->name, p->name) == 0)
231 subalign = aptr->subalign;
234 base = p->vma ? p->vma : exp_nameop (NAME, ".");
236 lang_enter_output_section_statement (p->name, base,
237 p->ok_to_load ? 0 : noload_section,
239 (etree_type *) NULL);
241 lang_add_wild (p->name, false, (char *) NULL, false, false, NULL);
243 /* If there is an alias for this section, add it too. */
244 for (aptr = alias; aptr; aptr = aptr->next)
245 if (strcmp (aptr->alias, p->name) == 0)
246 lang_add_wild (aptr->name, false, (char *) NULL, false, false, NULL);
248 lang_leave_output_section_statement
249 (0, "*default*", (struct lang_output_section_phdr_list *) NULL,
264 lang_add_input_file (name,
265 lang_input_file_is_file_enum, (char *) NULL);
267 lang_leave_output_section_statement (0, "*default*");
275 mri_add_to_list (&order, name, 0, 0, 0, 0);
279 mri_alias (want, is, isn)
288 /* Some sections are digits. */
289 sprintf (buf, "%d", isn);
297 mri_add_to_list (&alias, is, 0, want, 0, 0);
304 lang_add_output (name, 1);
311 if (strcmp (name, "S") == 0)
312 lang_add_output_format ("srec", (char *) NULL, (char *) NULL, 1);
314 else if (strcmp (name, "IEEE") == 0)
315 lang_add_output_format ("ieee", (char *) NULL, (char *) NULL, 1);
317 else if (strcmp (name, "COFF") == 0)
318 lang_add_output_format ("coff-m68k", (char *) NULL, (char *) NULL, 1);
321 einfo (_("%P%F: unknown format type %s\n"), name);
325 mri_public (name, exp)
329 lang_add_assignment (exp_assop ('=', name, exp));
333 mri_align (name, exp)
337 mri_add_to_list (&alignment, name, 0, 0, exp, 0);
341 mri_alignmod (name, exp)
345 mri_add_to_list (&subalignment, name, 0, 0, 0, exp);
352 symbol_truncate = exp;