/* Copyright (C) 1991 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, 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" 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; } ; 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; extern char *strdup(); 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 *)ldmalloc(sizeof(struct section_name_struct)); return ptr; } static void mri_add_to_list (list, name, vma, alias, align, subalign) struct section_name_struct **list; CONST char *name; etree_type *vma; CONST char *alias; 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 = alias; (*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; static void mri_draw_tree () { if (done_tree) return; /* 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); } /* 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 : SEC_NEVER_LOAD, 1, align, subalign, (etree_type *) NULL); base = 0; lang_add_wild(p->name, (char *)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, (char *)NULL); } } lang_leave_output_section_statement(0, "long"); p = p->next; } } done_tree = 1; } void mri_load (name) CONST char *name; { mri_draw_tree(); 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 =strdup(buf); } 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", 1); } else if (strcmp(name, "IEEE") == 0) { lang_add_output_format("ieee", 1); } else if (strcmp(name, "COFF") == 0) { lang_add_output_format("coff-m68k", 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) int exp; { symbol_truncate = exp; }