/* mri.c -- handle MRI style linker scripts Copyright 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 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, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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; }; static unsigned int symbol_truncate = 10000; static struct section_name_struct *order; static struct section_name_struct *only_load; static struct section_name_struct *address; static struct section_name_struct *alias; static struct section_name_struct *alignment; static struct section_name_struct *subalignment; static struct section_name_struct ** lookup (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 = xmalloc (sizeof (struct section_name_struct)); return ptr; } static void mri_add_to_list (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 = NULL; (*ptr)->ok_to_load = 0; (*ptr)->alias = zalias; (*ptr)->align = align; (*ptr)->subalign = subalign; } void mri_output_section (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 (const char *name) { mri_add_to_list (&only_load, name, 0, 0, 0, 0); } void mri_base (etree_type *exp) { base = exp; } static int done_tree = 0; void mri_draw_tree (void) { if (done_tree) return; /* Now build the statements for the ldlang machine. */ /* Attach the addresses of any which have addresses, and add the ones not mentioned. */ if (address != NULL) { struct section_name_struct *alist; struct section_name_struct *olist; if (order == NULL) order = address; for (alist = address; alist != NULL; alist = alist->next) { int done = 0; for (olist = order; done == 0 && olist != 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 != NULL) { struct section_name_struct *ptr1; struct section_name_struct *ptr2; if (order == 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 != 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; struct wildcard_list *tmp; /* 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, align, subalign, NULL, 0); base = 0; tmp = xmalloc (sizeof *tmp); tmp->next = NULL; tmp->spec.name = p->name; tmp->spec.exclude_name_list = NULL; tmp->spec.sorted = none; lang_add_wild (NULL, tmp, FALSE); /* 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) { tmp = xmalloc (sizeof *tmp); tmp->next = NULL; tmp->spec.name = aptr->name; tmp->spec.exclude_name_list = NULL; tmp->spec.sorted = none; lang_add_wild (NULL, tmp, FALSE); } lang_leave_output_section_statement (0, "*default*", NULL, NULL); p = p->next; } } done_tree = 1; } void mri_load (const char *name) { base = 0; lang_add_input_file (name, lang_input_file_is_file_enum, NULL); } void mri_order (const char *name) { mri_add_to_list (&order, name, 0, 0, 0, 0); } void mri_alias (const char *want, const char *is, int isn) { if (!is) { char buf[20]; /* Some sections are digits. */ sprintf (buf, "%d", isn); is = xstrdup (buf); if (is == NULL) abort (); } mri_add_to_list (&alias, is, 0, want, 0, 0); } void mri_name (const char *name) { lang_add_output (name, 1); } void mri_format (const char *name) { if (strcmp (name, "S") == 0) lang_add_output_format ("srec", NULL, NULL, 1); else if (strcmp (name, "IEEE") == 0) lang_add_output_format ("ieee", NULL, NULL, 1); else if (strcmp (name, "COFF") == 0) lang_add_output_format ("coff-m68k", NULL, NULL, 1); else einfo (_("%P%F: unknown format type %s\n"), name); } void mri_public (const char *name, etree_type *exp) { lang_add_assignment (exp_assop ('=', name, exp)); } void mri_align (const char *name, etree_type *exp) { mri_add_to_list (&alignment, name, 0, 0, exp, 0); } void mri_alignmod (const char *name, etree_type *exp) { mri_add_to_list (&subalignment, name, 0, 0, 0, exp); } void mri_truncate (unsigned int exp) { symbol_truncate = exp; }