From aa2289c2a3faf0f198e47943dcb29e0c16223be8 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Mon, 3 May 1999 07:29:11 +0000 Subject: Initial revision --- ld/mri.c | 377 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 377 insertions(+) create mode 100644 ld/mri.c (limited to 'ld/mri.c') 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 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; +} -- cgit v1.2.1