fcf276c495
cosmetic changes, declared various things in header files, removed various extern declarations from .c files. No substantive changes.
155 lines
3.8 KiB
C
155 lines
3.8 KiB
C
/* Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of GLD, the Gnu Linker.
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GLD is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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GLD is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GLD; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/*
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* By steve chamberlain
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* steve@cygnus.com
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*/
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#include "bfd.h"
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#include "sysdep.h"
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#include "ld.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldsym.h"
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#include "ldmisc.h"
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#include "ldgram.h"
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/* exported list of statements needed to handle constructors */
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lang_statement_list_type constructor_list;
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typedef struct constructor_list
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{
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CONST char *name;
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struct constructor_list *next;
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} constructor_list_type;
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static constructor_list_type *constructor_name_list;
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static void
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add_constructor_name (name)
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CONST char *name;
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{
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register constructor_list_type *ptr = constructor_name_list;
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for (; ptr != (constructor_list_type *)NULL; ptr = ptr->next) {
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if (strcmp (ptr->name, name) == 0)
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return;
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}
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/* There isn't an entry, so add one */
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ptr = (constructor_list_type *) ldmalloc (sizeof(constructor_list_type));
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ptr->next = constructor_name_list;
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ptr->name = name;
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constructor_name_list = ptr;
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}
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void
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ldlang_add_constructor (name)
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ldsym_type *name;
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{
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if (name->flags & SYM_CONSTRUCTOR) return;
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add_constructor_name (name->name);
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name->flags |= SYM_CONSTRUCTOR;
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}
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/* this function looks through the sections attached to the supplied
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bfd to see if any of them are magical constructor sections. If so
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their names are remembered and added to the list of constructors */
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void
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ldlang_check_for_constructors (entry)
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struct lang_input_statement_struct *entry;
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{
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asection *section;
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for (section = entry->the_bfd->sections;
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section != (asection *)NULL;
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section = section->next)
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{
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if (section->flags & SEC_CONSTRUCTOR)
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add_constructor_name (section->name);
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}
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}
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/* run through the symbol table, find all the symbols which are
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constructors and for each one, create statements to do something
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like..
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for something like "__CTOR_LIST__, foo" in the assembler
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__CTOR_LIST__ = . ;
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LONG(__CTOR_LIST_END - . / 4 - 2)
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*(foo)
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__CTOR_LIST_END= .
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Put these statements onto a special list.
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*/
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void
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find_constructors ()
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{
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lang_statement_list_type *old = stat_ptr;
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constructor_list_type *p = constructor_name_list;
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stat_ptr = & constructor_list;
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lang_list_init(stat_ptr);
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while (p != (constructor_list_type *)NULL)
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{
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/* Have we already done this one ? */
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CONST char *name = p->name;
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ldsym_type *lookup = ldsym_get_soft(name);
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/* If ld is invoked from collect, then the constructor list
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will already have been defined, so don't do it again. */
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if (lookup->sdefs_chain == (asymbol **)NULL)
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{
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size_t len = strlen(name);
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char *end = ldmalloc(len+3);
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strcpy(end, name);
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strcat(end,"$e");
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lang_add_assignment
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( exp_assop('=',name, exp_nameop(NAME,".")));
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lang_add_data
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(LONG, exp_binop('-',
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exp_binop ( '/',
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exp_binop ( '-',
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exp_nameop(NAME, end),
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exp_nameop(NAME,".")),
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exp_intop(4)),
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exp_intop(2)));
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lang_add_wild(name, (char *)NULL);
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lang_add_data(LONG, exp_intop(0));
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lang_add_assignment
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(exp_assop('=', end, exp_nameop(NAME,".")));
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}
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p = p->next;
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}
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stat_ptr = old;
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}
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