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-rw-r--r--ld/mri.c377
1 files changed, 377 insertions, 0 deletions
diff --git a/ld/mri.c b/ld/mri.c
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index 0000000..54aaea2
--- /dev/null
+++ b/ld/mri.c
@@ -0,0 +1,377 @@
+/* mri.c -- handle MRI style linker scripts
+ Copyright (C) 1991, 92, 93, 94, 95, 96, 1997, 1998 Free Software Foundation, Inc.
+
+This file is part of GLD, the Gnu Linker.
+
+GLD is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GLD is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GLD; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
+
+
+/* This bit does the tree decoration when MRI style link scripts are parsed */
+
+/*
+ contributed by Steve Chamberlain
+ sac@cygnus.com
+
+*/
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "ld.h"
+#include "ldexp.h"
+#include "ldlang.h"
+#include "ldmisc.h"
+#include "mri.h"
+#include "ldgram.h"
+#include "libiberty.h"
+
+struct section_name_struct {
+ struct section_name_struct *next;
+ CONST char *name;
+ CONST char *alias;
+ etree_type *vma;
+ etree_type *align;
+ etree_type *subalign;
+ int ok_to_load;
+} ;
+
+unsigned int symbol_truncate = 10000;
+struct section_name_struct *order;
+struct section_name_struct *only_load;
+struct section_name_struct *address;
+struct section_name_struct *alias;
+
+struct section_name_struct *alignment;
+struct section_name_struct *subalignment;
+
+static struct section_name_struct **lookup
+ PARAMS ((const char *name, struct section_name_struct **list));
+static void mri_add_to_list PARAMS ((struct section_name_struct **list,
+ const char *name, etree_type *vma,
+ const char *zalias, etree_type *align,
+ etree_type *subalign));
+
+static struct section_name_struct **
+lookup (name, list)
+ CONST char *name;
+ struct section_name_struct **list;
+{
+
+ struct section_name_struct **ptr = list;
+ while (*ptr)
+ {
+ if (strcmp(name, (*ptr)->name) == 0) {
+ /* If this is a match, delete it, we only keep the last instance
+ of any name */
+ *ptr = (*ptr)->next;
+ }
+ else {
+ ptr = &((*ptr)->next);
+ }
+ }
+
+ *ptr = (struct section_name_struct *)xmalloc(sizeof(struct section_name_struct));
+ return ptr;
+}
+
+static void
+mri_add_to_list (list, name, vma, zalias, align, subalign)
+ struct section_name_struct **list;
+ CONST char *name;
+ etree_type *vma;
+ CONST char *zalias;
+ etree_type *align;
+ etree_type *subalign;
+{
+ struct section_name_struct **ptr = lookup(name,list);
+ (*ptr)->name = name;
+ (*ptr)->vma = vma;
+ (*ptr)->next = (struct section_name_struct *)NULL;
+ (*ptr)->ok_to_load = 0;
+ (*ptr)->alias = zalias;
+ (*ptr)->align = align;
+ (*ptr)->subalign = subalign;
+}
+
+
+void
+mri_output_section (name, vma)
+ CONST char *name;
+ etree_type *vma;
+{
+ mri_add_to_list(&address, name, vma, 0,0,0);
+}
+
+/* if any ABSOLUTE <name> are in the script, only load those files
+marked thus */
+
+void
+mri_only_load (name)
+ CONST char *name;
+{
+ mri_add_to_list(&only_load, name, 0, 0,0,0);
+}
+
+
+void
+mri_base (exp)
+ etree_type *exp;
+{
+ base = exp;
+}
+
+static int done_tree = 0;
+
+void
+mri_draw_tree ()
+{
+ if (done_tree) return;
+
+ /* We don't bother with memory regions. */
+#if 0
+ /* Create the regions */
+ {
+ lang_memory_region_type *r;
+ r = lang_memory_region_lookup("long");
+ r->current = r->origin = exp_get_vma(base, (bfd_vma)0, "origin",
+ lang_first_phase_enum);
+ r->length = (bfd_size_type) exp_get_vma(0, (bfd_vma) ~((bfd_size_type)0),
+ "length", lang_first_phase_enum);
+ }
+#endif
+
+ /* Now build the statements for the ldlang machine */
+
+
+ /* Attatch the addresses of any which have addresses, and add the
+ ones not mentioned */
+ if (address != (struct section_name_struct *)NULL) {
+ struct section_name_struct *alist;
+ struct section_name_struct *olist;
+ if (order == (struct section_name_struct *)NULL) {
+ order = address;
+ }
+
+ for (alist = address;
+ alist != (struct section_name_struct*)NULL;
+ alist = alist->next)
+ {
+ int done = 0;
+ for (olist = order;
+ done == 0 &&
+ olist != (struct section_name_struct *)NULL;
+ olist = olist->next)
+ {
+ if (strcmp(alist->name, olist->name) == 0)
+ {
+ olist->vma = alist->vma;
+ done = 1;
+ }
+ }
+ if (!done) {
+ /* add this onto end of order list */
+ mri_add_to_list(&order, alist->name, alist->vma, 0,0,0);
+ }
+
+ }
+
+ }
+
+ /* If we're only supposed to load a subset of them in, then prune
+ the list. */
+
+ if (only_load != (struct section_name_struct *)NULL)
+ {
+ struct section_name_struct *ptr1;
+ struct section_name_struct *ptr2;
+ if (order == (struct section_name_struct*)NULL)
+ order = only_load;
+
+ /* See if this name is in the list, if it is then we can load it
+ */
+ for (ptr1 = only_load; ptr1; ptr1 = ptr1->next)
+ {
+ for (ptr2= order; ptr2; ptr2=ptr2->next)
+ {
+ if (strcmp(ptr2->name, ptr1->name)==0) {
+ ptr2->ok_to_load = 1;
+ }
+ }
+ }
+ }
+ else
+ {
+ /* No only load list, so everything is ok to load */
+ struct section_name_struct *ptr;
+ for (ptr = order; ptr; ptr=ptr->next) {
+ ptr->ok_to_load = 1;
+ }
+ }
+
+
+
+ /* Create the order of sections to load */
+ if (order != (struct section_name_struct *)NULL)
+ {
+ /* Been told to output the sections in a certain order */
+ struct section_name_struct *p = order;
+ while (p)
+ {
+ struct section_name_struct *aptr;
+ etree_type *align = 0;
+ etree_type *subalign = 0;
+ /* See if an alignment has been specified */
+
+ for (aptr = alignment; aptr; aptr= aptr->next)
+ {
+ if (strcmp(aptr->name, p->name)==0) {
+ align = aptr->align;
+ }
+ }
+
+ for (aptr = subalignment; aptr; aptr= aptr->next)
+ {
+ if (strcmp(aptr->name, p->name)==0) {
+ subalign = aptr->subalign;
+ }
+ }
+
+ if (base == 0) {
+ base = p->vma ? p->vma :exp_nameop(NAME, ".");
+ }
+ lang_enter_output_section_statement (p->name, base,
+ p->ok_to_load ? 0 : noload_section,
+ 1, align, subalign,
+ (etree_type *) NULL);
+ base = 0;
+ lang_add_wild (p->name, false, (char *)NULL, false, false, NULL);
+ /* If there is an alias for this section, add it too */
+ for (aptr = alias; aptr; aptr = aptr->next) {
+
+ if (strcmp(aptr->alias, p->name)== 0) {
+ lang_add_wild (aptr->name, false, (char *)NULL, false, false, NULL);
+ }
+ }
+
+ lang_leave_output_section_statement
+ (0, "*default*", (struct lang_output_section_phdr_list *) NULL);
+
+ p = p->next;
+ }
+ }
+
+
+ done_tree = 1;
+
+}
+void
+mri_load (name)
+ CONST char *name;
+{
+ base = 0;
+ lang_add_input_file(name,
+ lang_input_file_is_file_enum, (char *)NULL);
+ /* lang_leave_output_section_statement(0,"*default*");*/
+}
+
+
+void
+mri_order (name)
+ CONST char *name;
+{
+ mri_add_to_list(&order, name, 0, 0,0,0);
+}
+
+void
+mri_alias (want, is, isn)
+ CONST char *want;
+ CONST char *is;
+ int isn;
+{
+ if (!is) {
+ /* Some sections are digits - */
+ char buf[20];
+ sprintf(buf, "%d", isn);
+ is = xstrdup (buf);
+ if (is == NULL)
+ abort ();
+ }
+ mri_add_to_list(&alias, is, 0, want,0,0);
+
+}
+
+
+void
+mri_name (name)
+ CONST char *name;
+{
+ lang_add_output(name, 1);
+
+}
+
+
+void
+mri_format (name)
+ CONST char *name;
+{
+ if (strcmp(name, "S") == 0)
+ {
+ lang_add_output_format("srec", (char *) NULL, (char *) NULL, 1);
+ }
+ else if (strcmp(name, "IEEE") == 0)
+ {
+ lang_add_output_format("ieee", (char *) NULL, (char *) NULL, 1);
+ }
+ else if (strcmp(name, "COFF") == 0)
+ {
+ lang_add_output_format("coff-m68k", (char *) NULL, (char *) NULL, 1);
+ }
+ else {
+ einfo(_("%P%F: unknown format type %s\n"), name);
+ }
+}
+
+
+void
+mri_public (name, exp)
+ CONST char *name;
+ etree_type *exp;
+{
+ lang_add_assignment(exp_assop('=', name, exp));
+}
+
+void
+mri_align (name, exp)
+ CONST char *name;
+ etree_type *exp;
+{
+ mri_add_to_list(&alignment, name,0,0,exp,0);
+}
+
+void
+mri_alignmod (name, exp)
+ CONST char *name;
+ etree_type *exp;
+{
+ mri_add_to_list(&subalignment, name,0,0,0,exp);
+}
+
+
+void
+mri_truncate (exp)
+ unsigned int exp;
+{
+ symbol_truncate = exp;
+}
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