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