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nlmconv.c
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/* nlmconv.c -- NLM conversion program
Copyright (C) 1993-2015 Free Software Foundation, Inc.
This file is part of GNU Binutils.
This program 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 3 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
/* Written by Ian Lance Taylor <[email protected]>.
This program can be used to convert any appropriate object file
into a NetWare Loadable Module (an NLM). It will accept a linker
specification file which is identical to that accepted by the
NetWare linker, NLMLINK. */
/* AIX requires this to be the first thing in the file. */
#ifndef __GNUC__
# ifdef _AIX
#pragma alloca
#endif
#endif
#include "sysdep.h"
#include "bfd.h"
#include "libiberty.h"
#include "filenames.h"
#include "safe-ctype.h"
#include "ansidecl.h"
#include <time.h>
#include <assert.h>
#include "getopt.h"
/* Internal BFD NLM header. */
#include "libnlm.h"
#include "nlmconv.h"
#ifdef NLMCONV_ALPHA
#include "coff/sym.h"
#include "coff/ecoff.h"
#endif
#include "bucomm.h"
/* If strerror is just a macro, we want to use the one from libiberty
since it will handle undefined values. */
#undef strerror
extern char *strerror (int);
#ifndef SEEK_SET
#define SEEK_SET 0
#endif
#ifndef R_OK
#define R_OK 4
#define W_OK 2
#define X_OK 1
#endif
/* Global variables. */
/* The name used to invoke the program. */
char *program_name;
/* Local variables. */
/* Whether to print out debugging information (currently just controls
whether it prints the linker command if there is one). */
static int debug;
/* The symbol table. */
static asymbol **symbols;
/* A section we create in the output file to hold pointers to where
the sections of the input file end up. We will put a pointer to
this section in the NLM header. These is an entry for each input
section. The format is
null terminated section name
zeroes to adjust to 4 byte boundary
4 byte section data file pointer
4 byte section size
We don't need a version number. The way we find this information
is by finding a stamp in the NLM header information. If we need to
change the format of this information, we can simply change the
stamp. */
static asection *secsec;
/* A temporary file name to be unlinked on exit. Actually, for most
errors, we leave it around. It's not clear whether that is helpful
or not. */
static char *unlink_on_exit;
/* The list of long options. */
static struct option long_options[] =
{
{ "debug", no_argument, 0, 'd' },
{ "header-file", required_argument, 0, 'T' },
{ "help", no_argument, 0, 'h' },
{ "input-target", required_argument, 0, 'I' },
{ "input-format", required_argument, 0, 'I' }, /* Obsolete */
{ "linker", required_argument, 0, 'l' },
{ "output-target", required_argument, 0, 'O' },
{ "output-format", required_argument, 0, 'O' }, /* Obsolete */
{ "version", no_argument, 0, 'V' },
{ NULL, no_argument, 0, 0 }
};
/* Local routines. */
int main (int, char **);
static void show_usage (FILE *, int);
static const char *select_output_format
(enum bfd_architecture, unsigned long, bfd_boolean);
static void setup_sections (bfd *, asection *, void *);
static void copy_sections (bfd *, asection *, void *);
static void mangle_relocs
(bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
static void default_mangle_relocs
(bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
static char *link_inputs (struct string_list *, char *, char *);
#ifdef NLMCONV_I386
static void i386_mangle_relocs (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
#endif
#ifdef NLMCONV_ALPHA
static void alpha_mangle_relocs (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
#endif
#ifdef NLMCONV_POWERPC
static void powerpc_build_stubs (bfd *, bfd *, asymbol ***, long *);
static void powerpc_resolve_stubs (bfd *, bfd *);
static void powerpc_mangle_relocs (bfd *, asection *, arelent ***, long *, char *, bfd_size_type);
#endif
/* The main routine. */
int
main (int argc, char **argv)
{
int opt;
char *input_file = NULL;
const char *input_format = NULL;
const char *output_format = NULL;
const char *header_file = NULL;
char *ld_arg = NULL;
Nlm_Internal_Fixed_Header fixed_hdr_struct;
Nlm_Internal_Variable_Header var_hdr_struct;
Nlm_Internal_Version_Header version_hdr_struct;
Nlm_Internal_Copyright_Header copyright_hdr_struct;
Nlm_Internal_Extended_Header extended_hdr_struct;
bfd *inbfd;
bfd *outbfd;
asymbol **newsyms, **outsyms;
long symcount, newsymalloc, newsymcount;
long symsize;
asection *text_sec, *bss_sec, *data_sec;
bfd_vma vma;
bfd_size_type align;
asymbol *endsym;
long i;
char inlead, outlead;
bfd_boolean gotstart, gotexit, gotcheck;
struct stat st;
FILE *custom_data = NULL;
FILE *help_data = NULL;
FILE *message_data = NULL;
FILE *rpc_data = NULL;
FILE *shared_data = NULL;
size_t custom_size = 0;
size_t help_size = 0;
size_t message_size = 0;
size_t module_size = 0;
size_t rpc_size = 0;
asection *custom_section = NULL;
asection *help_section = NULL;
asection *message_section = NULL;
asection *module_section = NULL;
asection *rpc_section = NULL;
asection *shared_section = NULL;
bfd *sharedbfd;
size_t shared_offset = 0;
size_t shared_size = 0;
static Nlm_Internal_Fixed_Header sharedhdr;
int len;
char *modname;
char **matching;
#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
setlocale (LC_MESSAGES, "");
#endif
#if defined (HAVE_SETLOCALE)
setlocale (LC_CTYPE, "");
#endif
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
program_name = argv[0];
xmalloc_set_program_name (program_name);
bfd_set_error_program_name (program_name);
expandargv (&argc, &argv);
bfd_init ();
set_default_bfd_target ();
while ((opt = getopt_long (argc, argv, "dHhI:l:O:T:Vv", long_options,
(int *) NULL))
!= EOF)
{
switch (opt)
{
case 'd':
debug = 1;
break;
case 'H':
case 'h':
show_usage (stdout, 0);
break;
case 'I':
input_format = optarg;
break;
case 'l':
ld_arg = optarg;
break;
case 'O':
output_format = optarg;
break;
case 'T':
header_file = optarg;
break;
case 'v':
case 'V':
print_version ("nlmconv");
break;
case 0:
break;
default:
show_usage (stderr, 1);
break;
}
}
/* The input and output files may be named on the command line. */
output_file = NULL;
if (optind < argc)
{
input_file = argv[optind];
++optind;
if (optind < argc)
{
output_file = argv[optind];
++optind;
if (optind < argc)
show_usage (stderr, 1);
if (filename_cmp (input_file, output_file) == 0)
{
fatal (_("input and output files must be different"));
}
}
}
/* Initialize the header information to default values. */
fixed_hdr = &fixed_hdr_struct;
memset ((void *) &fixed_hdr_struct, 0, sizeof fixed_hdr_struct);
var_hdr = &var_hdr_struct;
memset ((void *) &var_hdr_struct, 0, sizeof var_hdr_struct);
version_hdr = &version_hdr_struct;
memset ((void *) &version_hdr_struct, 0, sizeof version_hdr_struct);
copyright_hdr = ©right_hdr_struct;
memset ((void *) ©right_hdr_struct, 0, sizeof copyright_hdr_struct);
extended_hdr = &extended_hdr_struct;
memset ((void *) &extended_hdr_struct, 0, sizeof extended_hdr_struct);
check_procedure = NULL;
custom_file = NULL;
debug_info = FALSE;
exit_procedure = "_Stop";
export_symbols = NULL;
map_file = NULL;
full_map = FALSE;
help_file = NULL;
import_symbols = NULL;
message_file = NULL;
modules = NULL;
sharelib_file = NULL;
start_procedure = "_Prelude";
verbose = FALSE;
rpc_file = NULL;
parse_errors = 0;
/* Parse the header file (if there is one). */
if (header_file != NULL)
{
if (! nlmlex_file (header_file)
|| yyparse () != 0
|| parse_errors != 0)
exit (1);
}
if (input_files != NULL)
{
if (input_file != NULL)
{
fatal (_("input file named both on command line and with INPUT"));
}
if (input_files->next == NULL)
input_file = input_files->string;
else
input_file = link_inputs (input_files, ld_arg, map_file);
}
else if (input_file == NULL)
{
non_fatal (_("no input file"));
show_usage (stderr, 1);
}
inbfd = bfd_openr (input_file, input_format);
if (inbfd == NULL)
bfd_fatal (input_file);
if (! bfd_check_format_matches (inbfd, bfd_object, &matching))
{
bfd_nonfatal (input_file);
if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
{
list_matching_formats (matching);
free (matching);
}
exit (1);
}
if (output_format == NULL)
output_format = select_output_format (bfd_get_arch (inbfd),
bfd_get_mach (inbfd),
bfd_big_endian (inbfd));
assert (output_format != NULL);
/* Use the output file named on the command line if it exists.
Otherwise use the file named in the OUTPUT statement. */
if (output_file == NULL)
{
non_fatal (_("no name for output file"));
show_usage (stderr, 1);
}
outbfd = bfd_openw (output_file, output_format);
if (outbfd == NULL)
bfd_fatal (output_file);
if (! bfd_set_format (outbfd, bfd_object))
bfd_fatal (output_file);
assert (bfd_get_flavour (outbfd) == bfd_target_nlm_flavour);
/* XXX: Should we accept the unknown bfd format here ? */
if (bfd_arch_get_compatible (inbfd, outbfd, TRUE) == NULL)
non_fatal (_("warning: input and output formats are not compatible"));
/* Move the values read from the command file into outbfd. */
*nlm_fixed_header (outbfd) = fixed_hdr_struct;
*nlm_variable_header (outbfd) = var_hdr_struct;
*nlm_version_header (outbfd) = version_hdr_struct;
*nlm_copyright_header (outbfd) = copyright_hdr_struct;
*nlm_extended_header (outbfd) = extended_hdr_struct;
/* Start copying the input BFD to the output BFD. */
if (! bfd_set_file_flags (outbfd, bfd_get_file_flags (inbfd)))
bfd_fatal (bfd_get_filename (outbfd));
symsize = bfd_get_symtab_upper_bound (inbfd);
if (symsize < 0)
bfd_fatal (input_file);
symbols = (asymbol **) xmalloc (symsize);
symcount = bfd_canonicalize_symtab (inbfd, symbols);
if (symcount < 0)
bfd_fatal (input_file);
/* Make sure we have a .bss section. */
bss_sec = bfd_get_section_by_name (outbfd, NLM_UNINITIALIZED_DATA_NAME);
if (bss_sec == NULL)
{
bss_sec = bfd_make_section_with_flags (outbfd,
NLM_UNINITIALIZED_DATA_NAME,
SEC_ALLOC);
if (bss_sec == NULL
|| ! bfd_set_section_alignment (outbfd, bss_sec, 1))
bfd_fatal (_("make .bss section"));
}
/* We store the original section names in the .nlmsections section,
so that programs which understand it can resurrect the original
sections from the NLM. We will put a pointer to .nlmsections in
the NLM header area. */
secsec = bfd_make_section_with_flags (outbfd, ".nlmsections",
SEC_HAS_CONTENTS);
if (secsec == NULL)
bfd_fatal (_("make .nlmsections section"));
#ifdef NLMCONV_POWERPC
/* For PowerPC NetWare we need to build stubs for calls to undefined
symbols. Because each stub requires an entry in the TOC section
which must be at the same location as other entries in the TOC
section, we must do this before determining where the TOC section
goes in setup_sections. */
if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
powerpc_build_stubs (inbfd, outbfd, &symbols, &symcount);
#endif
/* Set up the sections. */
bfd_map_over_sections (inbfd, setup_sections, (void *) outbfd);
text_sec = bfd_get_section_by_name (outbfd, NLM_CODE_NAME);
/* The .bss section immediately follows the .data section. */
data_sec = bfd_get_section_by_name (outbfd, NLM_INITIALIZED_DATA_NAME);
if (data_sec != NULL)
{
bfd_size_type add;
vma = bfd_get_section_size (data_sec);
align = 1 << bss_sec->alignment_power;
add = ((vma + align - 1) &~ (align - 1)) - vma;
vma += add;
if (! bfd_set_section_vma (outbfd, bss_sec, vma))
bfd_fatal (_("set .bss vma"));
if (add != 0)
{
bfd_size_type data_size;
data_size = bfd_get_section_size (data_sec);
if (! bfd_set_section_size (outbfd, data_sec, data_size + add))
bfd_fatal (_("set .data size"));
}
}
/* Adjust symbol information. */
inlead = bfd_get_symbol_leading_char (inbfd);
outlead = bfd_get_symbol_leading_char (outbfd);
gotstart = FALSE;
gotexit = FALSE;
gotcheck = FALSE;
newsymalloc = 10;
newsyms = (asymbol **) xmalloc (newsymalloc * sizeof (asymbol *));
newsymcount = 0;
endsym = NULL;
for (i = 0; i < symcount; i++)
{
asymbol *sym;
sym = symbols[i];
/* Add or remove a leading underscore. */
if (inlead != outlead)
{
if (inlead != '\0')
{
if (bfd_asymbol_name (sym)[0] == inlead)
{
if (outlead == '\0')
++sym->name;
else
{
char *new_name;
new_name = xmalloc (strlen (bfd_asymbol_name (sym)) + 1);
new_name[0] = outlead;
strcpy (new_name + 1, bfd_asymbol_name (sym) + 1);
sym->name = new_name;
}
}
}
else
{
char *new_name;
new_name = xmalloc (strlen (bfd_asymbol_name (sym)) + 2);
new_name[0] = outlead;
strcpy (new_name + 1, bfd_asymbol_name (sym));
sym->name = new_name;
}
}
/* NLM's have an uninitialized data section, but they do not
have a common section in the Unix sense. Move all common
symbols into the .bss section, and mark them as exported. */
if (bfd_is_com_section (bfd_get_section (sym)))
{
bfd_vma size = sym->value;
sym->section = bss_sec;
sym->value = bfd_get_section_size (bss_sec);
size += sym->value;
align = 1 << bss_sec->alignment_power;
size = (size + align - 1) & ~(align - 1);
bfd_set_section_size (outbfd, bss_sec, size);
sym->flags |= BSF_EXPORT | BSF_GLOBAL;
}
else if (bfd_get_section (sym)->output_section != NULL)
{
/* Move the symbol into the output section. */
sym->value += bfd_get_section (sym)->output_offset;
sym->section = bfd_get_section (sym)->output_section;
/* This is no longer a section symbol. */
sym->flags &=~ BSF_SECTION_SYM;
}
/* Force _edata and _end to be defined. This would normally be
done by the linker, but the manipulation of the common
symbols will confuse it. */
if ((sym->flags & BSF_DEBUGGING) == 0
&& bfd_asymbol_name (sym)[0] == '_'
&& bfd_is_und_section (bfd_get_section (sym)))
{
if (strcmp (bfd_asymbol_name (sym), "_edata") == 0)
{
sym->section = bss_sec;
sym->value = 0;
}
if (strcmp (bfd_asymbol_name (sym), "_end") == 0)
{
sym->section = bss_sec;
endsym = sym;
}
#ifdef NLMCONV_POWERPC
/* For PowerPC NetWare, we define __GOT0. This is the start
of the .got section. */
if (bfd_get_arch (inbfd) == bfd_arch_powerpc
&& strcmp (bfd_asymbol_name (sym), "__GOT0") == 0)
{
asection *got_sec;
got_sec = bfd_get_section_by_name (inbfd, ".got");
assert (got_sec != (asection *) NULL);
sym->value = got_sec->output_offset;
sym->section = got_sec->output_section;
}
#endif
}
/* If this is a global symbol, check the export list. */
if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) != 0)
{
struct string_list *l;
int found_simple;
/* Unfortunately, a symbol can appear multiple times on the
export list, with and without prefixes. */
found_simple = 0;
for (l = export_symbols; l != NULL; l = l->next)
{
if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
found_simple = 1;
else
{
char *zbase;
zbase = strchr (l->string, '@');
if (zbase != NULL
&& strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
{
/* We must add a symbol with this prefix. */
if (newsymcount >= newsymalloc)
{
newsymalloc += 10;
newsyms = ((asymbol **)
xrealloc ((void *) newsyms,
(newsymalloc
* sizeof (asymbol *))));
}
newsyms[newsymcount] =
(asymbol *) xmalloc (sizeof (asymbol));
*newsyms[newsymcount] = *sym;
newsyms[newsymcount]->name = l->string;
++newsymcount;
}
}
}
if (! found_simple)
{
/* The unmodified symbol is actually not exported at
all. */
sym->flags &=~ (BSF_GLOBAL | BSF_EXPORT);
sym->flags |= BSF_LOCAL;
}
}
/* If it's an undefined symbol, see if it's on the import list.
Change the prefix if necessary. */
if (bfd_is_und_section (bfd_get_section (sym)))
{
struct string_list *l;
for (l = import_symbols; l != NULL; l = l->next)
{
if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
break;
else
{
char *zbase;
zbase = strchr (l->string, '@');
if (zbase != NULL
&& strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
{
sym->name = l->string;
break;
}
}
}
if (l == NULL)
non_fatal (_("warning: symbol %s imported but not in import list"),
bfd_asymbol_name (sym));
}
/* See if it's one of the special named symbols. */
if ((sym->flags & BSF_DEBUGGING) == 0)
{
bfd_vma val;
/* FIXME: If these symbols are not in the .text section, we
add the .text section size to the value. This may not be
correct for all targets. I'm not sure how this should
really be handled. */
if (strcmp (bfd_asymbol_name (sym), start_procedure) == 0)
{
val = bfd_asymbol_value (sym);
if (bfd_get_section (sym) == data_sec
&& text_sec != (asection *) NULL)
val += bfd_section_size (outbfd, text_sec);
if (! bfd_set_start_address (outbfd, val))
bfd_fatal (_("set start address"));
gotstart = TRUE;
}
if (strcmp (bfd_asymbol_name (sym), exit_procedure) == 0)
{
val = bfd_asymbol_value (sym);
if (bfd_get_section (sym) == data_sec
&& text_sec != (asection *) NULL)
val += bfd_section_size (outbfd, text_sec);
nlm_fixed_header (outbfd)->exitProcedureOffset = val;
gotexit = TRUE;
}
if (check_procedure != NULL
&& strcmp (bfd_asymbol_name (sym), check_procedure) == 0)
{
val = bfd_asymbol_value (sym);
if (bfd_get_section (sym) == data_sec
&& text_sec != (asection *) NULL)
val += bfd_section_size (outbfd, text_sec);
nlm_fixed_header (outbfd)->checkUnloadProcedureOffset = val;
gotcheck = TRUE;
}
}
}
if (endsym != NULL)
{
endsym->value = bfd_get_section_size (bss_sec);
/* FIXME: If any relocs referring to _end use inplace addends,
then I think they need to be updated. This is handled by
i386_mangle_relocs. Is it needed for any other object
formats? */
}
if (newsymcount == 0)
outsyms = symbols;
else
{
outsyms = (asymbol **) xmalloc ((symcount + newsymcount + 1)
* sizeof (asymbol *));
memcpy (outsyms, symbols, symcount * sizeof (asymbol *));
memcpy (outsyms + symcount, newsyms, newsymcount * sizeof (asymbol *));
outsyms[symcount + newsymcount] = NULL;
}
bfd_set_symtab (outbfd, outsyms, symcount + newsymcount);
if (! gotstart)
non_fatal (_("warning: START procedure %s not defined"), start_procedure);
if (! gotexit)
non_fatal (_("warning: EXIT procedure %s not defined"), exit_procedure);
if (check_procedure != NULL && ! gotcheck)
non_fatal (_("warning: CHECK procedure %s not defined"), check_procedure);
/* Add additional sections required for the header information. */
if (custom_file != NULL)
{
custom_data = fopen (custom_file, "r");
if (custom_data == NULL
|| fstat (fileno (custom_data), &st) < 0)
{
fprintf (stderr, "%s:%s: %s\n", program_name, custom_file,
strerror (errno));
custom_file = NULL;
}
else
{
custom_size = st.st_size;
custom_section = bfd_make_section_with_flags (outbfd, ".nlmcustom",
SEC_HAS_CONTENTS);
if (custom_section == NULL
|| ! bfd_set_section_size (outbfd, custom_section, custom_size))
bfd_fatal (_("custom section"));
}
}
if (help_file != NULL)
{
help_data = fopen (help_file, "r");
if (help_data == NULL
|| fstat (fileno (help_data), &st) < 0)
{
fprintf (stderr, "%s:%s: %s\n", program_name, help_file,
strerror (errno));
help_file = NULL;
}
else
{
help_size = st.st_size;
help_section = bfd_make_section_with_flags (outbfd, ".nlmhelp",
SEC_HAS_CONTENTS);
if (help_section == NULL
|| ! bfd_set_section_size (outbfd, help_section, help_size))
bfd_fatal (_("help section"));
LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
}
}
if (message_file != NULL)
{
message_data = fopen (message_file, "r");
if (message_data == NULL
|| fstat (fileno (message_data), &st) < 0)
{
fprintf (stderr, "%s:%s: %s\n", program_name, message_file,
strerror (errno));
message_file = NULL;
}
else
{
message_size = st.st_size;
message_section = bfd_make_section_with_flags (outbfd,
".nlmmessages",
SEC_HAS_CONTENTS);
if (message_section == NULL
|| ! bfd_set_section_size (outbfd, message_section, message_size))
bfd_fatal (_("message section"));
LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
}
}
if (modules != NULL)
{
struct string_list *l;
module_size = 0;
for (l = modules; l != NULL; l = l->next)
module_size += strlen (l->string) + 1;
module_section = bfd_make_section_with_flags (outbfd, ".nlmmodules",
SEC_HAS_CONTENTS);
if (module_section == NULL
|| ! bfd_set_section_size (outbfd, module_section, module_size))
bfd_fatal (_("module section"));
}
if (rpc_file != NULL)
{
rpc_data = fopen (rpc_file, "r");
if (rpc_data == NULL
|| fstat (fileno (rpc_data), &st) < 0)
{
fprintf (stderr, "%s:%s: %s\n", program_name, rpc_file,
strerror (errno));
rpc_file = NULL;
}
else
{
rpc_size = st.st_size;
rpc_section = bfd_make_section_with_flags (outbfd, ".nlmrpc",
SEC_HAS_CONTENTS);
if (rpc_section == NULL
|| ! bfd_set_section_size (outbfd, rpc_section, rpc_size))
bfd_fatal (_("rpc section"));
LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
}
}
if (sharelib_file != NULL)
{
sharedbfd = bfd_openr (sharelib_file, output_format);
if (sharedbfd == NULL
|| ! bfd_check_format (sharedbfd, bfd_object))
{
fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
bfd_errmsg (bfd_get_error ()));
sharelib_file = NULL;
}
else
{
sharedhdr = *nlm_fixed_header (sharedbfd);
bfd_close (sharedbfd);
shared_data = fopen (sharelib_file, "r");
if (shared_data == NULL
|| (fstat (fileno (shared_data), &st) < 0))
{
fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
strerror (errno));
sharelib_file = NULL;
}
else
{
/* If we were clever, we could just copy out the
sections of the shared library which we actually
need. However, we would have to figure out the sizes
of the external and public information, and that can
not be done without reading through them. */
if (sharedhdr.uninitializedDataSize > 0)
{
/* There is no place to record this information. */
non_fatal (_("%s: warning: shared libraries can not have uninitialized data"),
sharelib_file);
}
shared_offset = st.st_size;
if (shared_offset > (size_t) sharedhdr.codeImageOffset)
shared_offset = sharedhdr.codeImageOffset;
if (shared_offset > (size_t) sharedhdr.dataImageOffset)
shared_offset = sharedhdr.dataImageOffset;
if (shared_offset > (size_t) sharedhdr.relocationFixupOffset)
shared_offset = sharedhdr.relocationFixupOffset;
if (shared_offset > (size_t) sharedhdr.externalReferencesOffset)
shared_offset = sharedhdr.externalReferencesOffset;
if (shared_offset > (size_t) sharedhdr.publicsOffset)
shared_offset = sharedhdr.publicsOffset;
shared_size = st.st_size - shared_offset;
shared_section = bfd_make_section_with_flags (outbfd,
".nlmshared",
SEC_HAS_CONTENTS);
if (shared_section == NULL
|| ! bfd_set_section_size (outbfd, shared_section,
shared_size))
bfd_fatal (_("shared section"));
LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
}
}
}
/* Check whether a version was given. */
if (!CONST_STRNEQ (version_hdr->stamp, "VeRsIoN#"))
non_fatal (_("warning: No version number given"));
/* At least for now, always create an extended header, because that
is what NLMLINK does. */
LITMEMCPY (nlm_extended_header (outbfd)->stamp, "MeSsAgEs");
LITMEMCPY (nlm_cygnus_ext_header (outbfd)->stamp, "CyGnUsEx");
/* If the date was not given, force it in. */
if (nlm_version_header (outbfd)->month == 0
&& nlm_version_header (outbfd)->day == 0
&& nlm_version_header (outbfd)->year == 0)
{
time_t now;
struct tm *ptm;
time (&now);
ptm = localtime (&now);
nlm_version_header (outbfd)->month = ptm->tm_mon + 1;
nlm_version_header (outbfd)->day = ptm->tm_mday;
nlm_version_header (outbfd)->year = ptm->tm_year + 1900;
LITMEMCPY (version_hdr->stamp, "VeRsIoN#");
}
#ifdef NLMCONV_POWERPC
/* Resolve the stubs we build for PowerPC NetWare. */
if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
powerpc_resolve_stubs (inbfd, outbfd);
#endif
/* Copy over the sections. */
bfd_map_over_sections (inbfd, copy_sections, (void *) outbfd);
/* Finish up the header information. */
if (custom_file != NULL)
{
void *data;
data = xmalloc (custom_size);
if (fread (data, 1, custom_size, custom_data) != custom_size)
non_fatal (_("%s: read: %s"), custom_file, strerror (errno));
else
{
if (! bfd_set_section_contents (outbfd, custom_section, data,
(file_ptr) 0, custom_size))
bfd_fatal (_("custom section"));
nlm_fixed_header (outbfd)->customDataOffset =
custom_section->filepos;
nlm_fixed_header (outbfd)->customDataSize = custom_size;
}
free (data);
}
if (! debug_info)
{
/* As a special hack, the backend recognizes a debugInfoOffset
of -1 to mean that it should not output any debugging
information. This can not be handling by fiddling with the
symbol table because exported symbols appear in both the
export information and the debugging information. */
nlm_fixed_header (outbfd)->debugInfoOffset = (file_ptr) -1;
}
if (full_map)
non_fatal (_("warning: FULLMAP is not supported; try ld -M"));
if (help_file != NULL)
{
void *data;
data = xmalloc (help_size);
if (fread (data, 1, help_size, help_data) != help_size)
non_fatal (_("%s: read: %s"), help_file, strerror (errno));
else
{
if (! bfd_set_section_contents (outbfd, help_section, data,
(file_ptr) 0, help_size))
bfd_fatal (_("help section"));
nlm_extended_header (outbfd)->helpFileOffset =
help_section->filepos;
nlm_extended_header (outbfd)->helpFileLength = help_size;
}
free (data);
}
if (message_file != NULL)
{
void *data;
data = xmalloc (message_size);
if (fread (data, 1, message_size, message_data) != message_size)
non_fatal (_("%s: read: %s"), message_file, strerror (errno));
else
{
if (! bfd_set_section_contents (outbfd, message_section, data,
(file_ptr) 0, message_size))
bfd_fatal (_("message section"));
nlm_extended_header (outbfd)->messageFileOffset =
message_section->filepos;
nlm_extended_header (outbfd)->messageFileLength = message_size;
/* FIXME: Are these offsets correct on all platforms? Are
they 32 bits on all platforms? What endianness? */
nlm_extended_header (outbfd)->languageID =
bfd_h_get_32 (outbfd, (bfd_byte *) data + 106);
nlm_extended_header (outbfd)->messageCount =
bfd_h_get_32 (outbfd, (bfd_byte *) data + 110);
}
free (data);
}
if (modules != NULL)
{
void *data;
unsigned char *set;
struct string_list *l;
bfd_size_type c;
data = xmalloc (module_size);
c = 0;
set = (unsigned char *) data;
for (l = modules; l != NULL; l = l->next)
{
*set = strlen (l->string);
strncpy ((char *) set + 1, l->string, *set);
set += *set + 1;
++c;
}
if (! bfd_set_section_contents (outbfd, module_section, data,
(file_ptr) 0, module_size))
bfd_fatal (_("module section"));
nlm_fixed_header (outbfd)->moduleDependencyOffset =
module_section->filepos;
nlm_fixed_header (outbfd)->numberOfModuleDependencies = c;
}
if (rpc_file != NULL)
{
void *data;
data = xmalloc (rpc_size);
if (fread (data, 1, rpc_size, rpc_data) != rpc_size)
non_fatal (_("%s: read: %s"), rpc_file, strerror (errno));
else
{
if (! bfd_set_section_contents (outbfd, rpc_section, data,