383 lines
8.4 KiB
C
383 lines
8.4 KiB
C
/* Copyright (C) 1991, 92, 93, 94 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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ldfile.c
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look after all the file stuff
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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 "ldmisc.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldfile.h"
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#include "ldmain.h"
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#include "ldgram.h"
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#include "ldlex.h"
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#include <ctype.h>
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char *ldfile_input_filename;
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const char *ldfile_output_machine_name = "";
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unsigned long ldfile_output_machine;
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enum bfd_architecture ldfile_output_architecture;
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search_dirs_type *search_head;
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/* start-sanitize-mpw */
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#ifndef MPW
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/* end-sanitize-mpw */
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#ifdef VMS
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char *slash = "";
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#else
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char *slash = "/";
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#endif
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/* start-sanitize-mpw */
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#else /* MPW */
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/* The MPW path char is a colon. */
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char *slash = ":";
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#endif /* MPW */
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/* end-sanitize-mpw */
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/* LOCAL */
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static search_dirs_type **search_tail_ptr = &search_head;
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typedef struct search_arch
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{
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char *name;
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struct search_arch *next;
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} search_arch_type;
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static search_arch_type *search_arch_head;
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static search_arch_type **search_arch_tail_ptr = &search_arch_head;
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static bfd *cached_bfd_openr PARAMS ((const char *attempt,
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lang_input_statement_type *entry));
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static bfd *open_a PARAMS ((char *arch, lang_input_statement_type *entry,
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char *lib, char *suffix));
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static FILE *try_open PARAMS ((char *name, char *exten));
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void
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ldfile_add_library_path (name, cmdline)
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const char *name;
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boolean cmdline;
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{
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search_dirs_type *new;
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new = (search_dirs_type *) xmalloc (sizeof (search_dirs_type));
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new->next = NULL;
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new->name = name;
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new->cmdline = cmdline;
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*search_tail_ptr = new;
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search_tail_ptr = &new->next;
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}
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static bfd *
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cached_bfd_openr(attempt,entry)
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const char *attempt;
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lang_input_statement_type *entry;
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{
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entry->the_bfd = bfd_openr(attempt, entry->target);
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if (trace_file_tries == true ) {
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info_msg ("attempt to open %s %s\n", attempt,
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(entry->the_bfd == (bfd *)NULL) ? "failed" : "succeeded" );
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}
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return entry->the_bfd;
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}
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static bfd *
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open_a(arch, entry, lib, suffix)
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char *arch;
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lang_input_statement_type *entry;
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char *lib;
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char *suffix;
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{
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bfd*desc;
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search_dirs_type *search ;
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/* If this is not an archive, try to open it in the current
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directory first. */
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if (! entry->is_archive)
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{
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desc = cached_bfd_openr (entry->filename, entry);
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if (desc != NULL)
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return desc;
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}
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for (search = search_head;
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search != (search_dirs_type *)NULL;
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search = search->next)
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{
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char buffer[1000];
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char *string;
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if (entry->is_archive == true) {
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sprintf(buffer,
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"%s%s%s%s%s%s",
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search->name,
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slash,
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lib,
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entry->filename, arch, suffix);
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}
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else {
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if (entry->filename[0] == '/' || entry->filename[0] == '.') {
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strcpy(buffer, entry->filename);
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} else {
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sprintf(buffer,"%s%s%s",search->name, slash, entry->filename);
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}
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}
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string = buystring(buffer);
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desc = cached_bfd_openr (string, entry);
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if (desc)
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{
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entry->filename = string;
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entry->the_bfd = desc;
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return desc;
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}
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free(string);
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}
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return (bfd *)NULL;
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}
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/* Open the input file specified by 'entry', and return a descriptor.
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The open file is remembered; if the same file is opened twice in a row,
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a new open is not actually done. */
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void
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ldfile_open_file (entry)
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lang_input_statement_type *entry;
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{
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ASSERT (entry->the_bfd == NULL);
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if (! entry->search_dirs_flag)
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entry->the_bfd = cached_bfd_openr (entry->filename, entry);
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else
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{
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search_arch_type *arch;
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/* Try to open <filename><suffix> or lib<filename><suffix>.a */
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for (arch = search_arch_head;
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arch != (search_arch_type *) NULL;
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arch = arch->next)
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{
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if (config.dynamic_link)
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{
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/* FIXME: Perhaps we will sometimes want something other
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than .so. */
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if (open_a (arch->name, entry, "lib", ".so") != (bfd *) NULL)
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return;
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}
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if (open_a (arch->name, entry, "lib", ".a") != (bfd *) NULL)
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return;
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#ifdef VMS
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if (open_a (arch->name, entry, ":lib", ".a") != (bfd *) NULL)
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return;
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#endif
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}
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}
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if (entry->the_bfd == NULL)
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einfo("%F%P: cannot open %s: %E\n", entry->local_sym_name);
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}
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/* Try to open NAME; if that fails, try NAME with EXTEN appended to it. */
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static FILE *
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try_open(name, exten)
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char *name;
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char *exten;
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{
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FILE *result;
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char buff[1000];
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result = fopen(name, "r");
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if (trace_file_tries == true) {
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if (result == (FILE *)NULL) {
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info_msg ("cannot find ");
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}
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info_msg ("%s\n",name);
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}
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if (result != (FILE *)NULL) {
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return result;
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}
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if (*exten) {
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sprintf(buff, "%s%s", name, exten);
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result = fopen(buff, "r");
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if (trace_file_tries == true) {
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if (result == (FILE *)NULL) {
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info_msg ("cannot find ");
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}
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info_msg ("%s\n", buff);
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}
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}
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return result;
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}
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/* Try to open NAME; if that fails, look for it in any directories
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specified with -L, without and with EXTEND apppended. */
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FILE *
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ldfile_find_command_file(name, extend)
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char *name;
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char *extend;
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{
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search_dirs_type *search;
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FILE *result;
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char buffer[1000];
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/* First try raw name */
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result = try_open(name,"");
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if (result == (FILE *)NULL) {
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/* Try now prefixes */
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for (search = search_head;
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search != (search_dirs_type *)NULL;
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search = search->next) {
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sprintf(buffer,"%s/%s", search->name, name);
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result = try_open(buffer, extend);
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if (result)break;
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}
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}
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return result;
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}
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void
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ldfile_open_command_file(name)
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char *name;
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{
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FILE *ldlex_input_stack;
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ldlex_input_stack = ldfile_find_command_file(name, "");
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if (ldlex_input_stack == (FILE *)NULL) {
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bfd_set_error (bfd_error_system_call);
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einfo("%P%F: cannot open linker script file %s: %E\n",name);
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}
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lex_push_file(ldlex_input_stack, name);
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ldfile_input_filename = name;
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had_script = true;
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}
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#ifdef GNU960
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static
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char *
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gnu960_map_archname( name )
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char *name;
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{
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struct tabentry { char *cmd_switch; char *arch; };
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static struct tabentry arch_tab[] = {
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"", "",
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"KA", "ka",
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"KB", "kb",
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"KC", "mc", /* Synonym for MC */
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"MC", "mc",
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"CA", "ca",
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"SA", "ka", /* Functionally equivalent to KA */
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"SB", "kb", /* Functionally equivalent to KB */
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NULL, ""
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};
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struct tabentry *tp;
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for ( tp = arch_tab; tp->cmd_switch != NULL; tp++ ){
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if ( !strcmp(name,tp->cmd_switch) ){
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break;
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}
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}
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if ( tp->cmd_switch == NULL ){
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einfo("%P%F: unknown architecture: %s\n",name);
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}
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return tp->arch;
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}
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void
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ldfile_add_arch(name)
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char *name;
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{
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search_arch_type *new =
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(search_arch_type *)xmalloc((bfd_size_type)(sizeof(search_arch_type)));
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if (*name != '\0') {
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if (ldfile_output_machine_name[0] != '\0') {
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einfo("%P%F: target architecture respecified\n");
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return;
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}
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ldfile_output_machine_name = name;
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}
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new->next = (search_arch_type*)NULL;
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new->name = gnu960_map_archname( name );
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*search_arch_tail_ptr = new;
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search_arch_tail_ptr = &new->next;
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}
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#else /* not GNU960 */
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void
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ldfile_add_arch (in_name)
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CONST char * in_name;
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{
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char *name = buystring(in_name);
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search_arch_type *new =
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(search_arch_type *)xmalloc((bfd_size_type)(sizeof(search_arch_type)));
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ldfile_output_machine_name = in_name;
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new->name = name;
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new->next = (search_arch_type*)NULL;
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while (*name) {
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if (isupper(*name)) *name = tolower(*name);
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name++;
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}
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*search_arch_tail_ptr = new;
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search_arch_tail_ptr = &new->next;
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}
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#endif
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/* Set the output architecture */
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void
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ldfile_set_output_arch (string)
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CONST char *string;
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{
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bfd_arch_info_type *arch = bfd_scan_arch(string);
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if (arch) {
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ldfile_output_architecture = arch->arch;
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ldfile_output_machine = arch->mach;
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ldfile_output_machine_name = arch->printable_name;
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}
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else {
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einfo("%P%F: cannot represent machine `%s'\n", string);
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}
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}
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