Initial revision

1 files changed, 377 insertions, 0 deletions

diff --git a/ld/mri.c b/ld/mri.c
new file mode 100644
index 0000000000..54aaea2940
--- /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;
+}