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
39 struct section_name_struct *next;
48 unsigned int symbol_truncate = 10000;
49 struct section_name_struct *order;
50 struct section_name_struct *only_load;
51 struct section_name_struct *address;
52 struct section_name_struct *alias;
54 struct section_name_struct *alignment;
55 struct section_name_struct *subalignment;
57 static struct section_name_struct **lookup
58 PARAMS ((const char *name, struct section_name_struct **list));
59 static void mri_add_to_list PARAMS ((struct section_name_struct **list,
60 const char *name, etree_type *vma,
61 const char *zalias, etree_type *align,
62 etree_type *subalign));
64 static struct section_name_struct **
67 struct section_name_struct **list;
69 struct section_name_struct **ptr = list;
73 if (strcmp (name, (*ptr)->name) == 0)
74 /* If this is a match, delete it, we only keep the last instance
78 ptr = &((*ptr)->next);
81 *ptr = (struct section_name_struct *) xmalloc (sizeof (struct section_name_struct));
86 mri_add_to_list (list, name, vma, zalias, align, subalign)
87 struct section_name_struct **list;
94 struct section_name_struct **ptr = lookup (name,list);
98 (*ptr)->next = (struct section_name_struct *) NULL;
99 (*ptr)->ok_to_load = 0;
100 (*ptr)->alias = zalias;
101 (*ptr)->align = align;
102 (*ptr)->subalign = subalign;
106 mri_output_section (name, vma)
110 mri_add_to_list (& address, name, vma, 0,0,0);
113 /* If any ABSOLUTE <name> are in the script, only load those files
120 mri_add_to_list (&only_load, name, 0, 0,0,0);
130 static int done_tree = 0;
138 #if 0 /* We don't bother with memory regions. */
139 /* Create the regions. */
141 lang_memory_region_type *r;
143 r = lang_memory_region_lookup("long");
144 r->current = r->origin = exp_get_vma (base, (bfd_vma)0, "origin",
145 lang_first_phase_enum);
146 r->length = (bfd_size_type) exp_get_vma (0, (bfd_vma) ~((bfd_size_type)0),
147 "length", lang_first_phase_enum);
151 /* Now build the statements for the ldlang machine. */
153 /* Attatch the addresses of any which have addresses,
154 and add the ones not mentioned. */
155 if (address != (struct section_name_struct *)NULL)
157 struct section_name_struct *alist;
158 struct section_name_struct *olist;
160 if (order == (struct section_name_struct *)NULL)
163 for (alist = address;
164 alist != (struct section_name_struct*)NULL;
171 olist != (struct section_name_struct *)NULL;
174 if (strcmp (alist->name, olist->name) == 0)
176 olist->vma = alist->vma;
183 /* Add this onto end of order list. */
184 mri_add_to_list (& order, alist->name, alist->vma, 0,0,0);
189 /* If we're only supposed to load a subset of them in, then prune
191 if (only_load != (struct section_name_struct *)NULL)
193 struct section_name_struct *ptr1;
194 struct section_name_struct *ptr2;
196 if (order == (struct section_name_struct*)NULL)
199 /* See if this name is in the list, if it is then we can load it. */
200 for (ptr1 = only_load; ptr1; ptr1 = ptr1->next)
201 for (ptr2 = order; ptr2; ptr2 = ptr2->next)
202 if (strcmp (ptr2->name, ptr1->name) == 0)
203 ptr2->ok_to_load = 1;
207 /* No only load list, so everything is ok to load. */
208 struct section_name_struct *ptr;
210 for (ptr = order; ptr; ptr=ptr->next)
214 /* Create the order of sections to load. */
215 if (order != (struct section_name_struct *)NULL)
217 /* Been told to output the sections in a certain order. */
218 struct section_name_struct *p = order;
222 struct section_name_struct *aptr;
223 etree_type *align = 0;
224 etree_type *subalign = 0;
226 /* See if an alignment has been specified. */
227 for (aptr = alignment; aptr; aptr= aptr->next)
228 if (strcmp (aptr->name, p->name) == 0)
231 for (aptr = subalignment; aptr; aptr= aptr->next)
232 if (strcmp (aptr->name, p->name) == 0)
233 subalign = aptr->subalign;
236 base = p->vma ? p->vma :exp_nameop (NAME, ".");
238 lang_enter_output_section_statement (p->name, base,
239 p->ok_to_load ? 0 : noload_section,
241 (etree_type *) NULL);
243 lang_add_wild (p->name, false, (char *)NULL, false, false, NULL);
245 /* If there is an alias for this section, add it too. */
246 for (aptr = alias; aptr; aptr = aptr->next)
247 if (strcmp (aptr->alias, p->name) == 0)
248 lang_add_wild (aptr->name, false, (char *)NULL, false, false, NULL);
250 lang_leave_output_section_statement
251 (0, "*default*", (struct lang_output_section_phdr_list *) NULL,
266 lang_add_input_file (name,
267 lang_input_file_is_file_enum, (char *)NULL);
269 lang_leave_output_section_statement (0,"*default*");
277 mri_add_to_list (& order, name, 0, 0,0,0);
281 mri_alias (want, is, isn)
290 /* Some sections are digits. */
291 sprintf (buf, "%d", isn);
299 mri_add_to_list (& alias, is, 0, want,0,0);
306 lang_add_output (name, 1);
313 if (strcmp (name, "S") == 0)
314 lang_add_output_format ("srec", (char *) NULL, (char *) NULL, 1);
316 else if (strcmp (name, "IEEE") == 0)
317 lang_add_output_format ("ieee", (char *) NULL, (char *) NULL, 1);
319 else if (strcmp (name, "COFF") == 0)
320 lang_add_output_format ("coff-m68k", (char *) NULL, (char *) NULL, 1);
323 einfo (_("%P%F: unknown format type %s\n"), name);
327 mri_public (name, exp)
331 lang_add_assignment (exp_assop ('=', name, exp));
335 mri_align (name, exp)
339 mri_add_to_list (& alignment, name, 0, 0, exp, 0);
343 mri_alignmod (name, exp)
347 mri_add_to_list (& subalignment, name, 0, 0, 0, exp);
354 symbol_truncate = exp;