@ifinfo
@format
START-INFO-DIR-ENTRY
-* Binutils: (binutils). The GNU binary utilities "ar", "ld", "copy",
+* Binutils: (binutils). The GNU binary utilities "ar", "ld", "objcopy",
"objdump", "nm", "size", "strip", and "ranlib".
END-INFO-DIR-ENTRY
@end format
@synindex ky cp
@c
-@c This file documents the GNU binary utilities "ar", "ld", "copy", "objdump",
-@c "nm", "size", "strip", and "ranlib".
+@c This file documents the GNU binary utilities "ar", "ld", "objcopy",
+@c "objdump", "nm", "size", "strip", and "ranlib".
@c
@c Copyright (C) 1991 Free Software Foundation, Inc.
@c
@item ar
Create, modify, and extract from archives
-@item copy
+@item objcopy
Copy and translate object files
@item nm
@menu
* ar:: Create, modify, and extract from archives
-* copy:: Copy and translate object files
+* objcopy:: Copy and translate object files
* ld:(ld)Overview. Combine object and archive files
* nm:: List symbols from object files
* objdump:: Display information from object files
* Index::
@end menu
-@node ar, copy, Top, Top
+@node ar, objcopy, Top, Top
@chapter ar
@kindex ar
@end table
-@node copy, nm, ar, Top
-@chapter copy
+@node objcopy, nm, ar, Top
+@chapter objcopy
@smallexample
-copy [ -F @var{format} | --format=@var{format} ]
- [ -I @var{format} | --input-format=@var{format} ]
- [ -O @var{format} | --output-format=@var{format} ]
- [ -S | --strip-all ] [ -g | --strip-debug ]
- [ -x | --discard-all ] [ -X | --discard-locals ]
- [ -v | --verbose ] [ -V | --version ]
- @var{infile} [@var{outfile}]
+objcopy [ -F @var{format} | --format=@var{format} ]
+ [ -I @var{format} | --input-format=@var{format} ]
+ [ -O @var{format} | --output-format=@var{format} ]
+ [ -S | --strip-all ] [ -g | --strip-debug ]
+ [ -x | --discard-all ] [ -X | --discard-locals ]
+ [ -v | --verbose ] [ -V | --version ]
+ @var{infile} [@var{outfile}]
@end smallexample
-The GNU @code{copy} utility copies the contents of an object file to
-another. @code{copy} uses the GNU BFD Library to read and write the
+The GNU @code{objcopy} utility copies the contents of an object file to
+another. @code{objcopy} uses the GNU BFD Library to read and write the
object files. It can write the destination object file in a format
different from that of the source object file. The exact behavior of
-@code{copy} is controlled by command-line options.
+@code{objcopy} is controlled by command-line options.
-@code{copy} creates temporary files to do its translations and
-deletes them afterward. @code{copy} uses BFD to do all its
+@code{objcopy} creates temporary files to do its translations and
+deletes them afterward. @code{objcopy} uses BFD to do all its
translation work; it knows about all the formats BFD knows about, and
thus is able to recognize most formats without being told explicitly.
@xref{BFD,,BFD,ld.info,Using LD, the GNU linker}.
@item @var{infile}
@itemx @var{outfile}
The source and output files respectively.
-If you do not specify @var{outfile}, @code{copy} creates a
+If you do not specify @var{outfile}, @code{objcopy} creates a
temporary file and destructively renames the result with
the name of the input file.
@item -V
@itemx --version
-Show the version number of @code{copy}.
+Show the version number of @code{objcopy}.
@item -v
@itemx --verbose
Verbose output: list all object files modified. In the case of
-archives, @samp{copy -V} lists all members of the archive.
+archives, @samp{objcopy -V} lists all members of the archive.
@end table
@iftex
@xref{Top,, Overview,, Using LD: the GNU linker}.
@end iftex
-@node nm, objdump, copy, Top
+@node nm, objdump, objcopy, Top
@chapter nm
@cindex symbols
@kindex nm
+++ /dev/null
-/* copy.c -- copy object file from input to output, optionally massaging it.
- Copyright (C) 1991 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#include "bfd.h"
-#include "sysdep.h"
-#include "bucomm.h"
-#include <getopt.h>
-
-asymbol **sympp;
-char *input_target = NULL;
-char *output_target = NULL;
-char *input_filename = NULL;
-char *output_filename = NULL;
-
-
-static void setup_sections();
-static void copy_sections();
-static boolean verbose;
-
-/* This flag distinguishes between strip and copy:
- 1 means this is 'strip'; 0 means this is 'copy'.
- -1 means if we should use argv[0] to decide. */
-extern int is_strip;
-
-int show_version = 0;
-
-enum strip_action
-{
- strip_undef,
- strip_none, /* don't strip */
- strip_debug, /* strip all debugger symbols */
- strip_all /* strip all symbols */
-};
-
-/* Which symbols to remove. */
-enum strip_action strip_symbols;
-
-enum locals_action
-{
- locals_undef,
- locals_start_L, /* discard locals starting with L */
- locals_all /* discard all locals */
-};
-
-/* Which local symbols to remove. */
-enum locals_action discard_locals;
-
-/* Options to handle if running as "strip". */
-
-struct option strip_options[] = {
- {"strip-all", no_argument, 0, 's'},
- {"strip-debug", no_argument, 0, 'S'},
- {"discard-all", no_argument, 0, 'x'},
- {"discard-locals", no_argument, 0, 'X'},
- {"input-format", required_argument, 0, 'I'},
- {"output-format", required_argument, 0, 'O'},
- {"format", required_argument, 0, 'F'},
- {"target", required_argument, 0, 'F'},
-
- {"version", no_argument, 0, 'V'},
- {"verbose", no_argument, 0, 'v'},
- {0, no_argument, 0, 0}
-};
-
-/* Options to handle if running as "copy". */
-
-struct option copy_options[] = {
- {"strip-all", no_argument, 0, 'S'},
- {"strip-debug", no_argument, 0, 'g'},
- {"discard-all", no_argument, 0, 'x'},
- {"discard-locals", no_argument, 0, 'X'},
- {"input-format", required_argument, 0, 'I'},
- {"output-format", required_argument, 0, 'O'},
- {"format", required_argument, 0, 'F'},
- {"target", required_argument, 0, 'F'},
-
- {"version", no_argument, 0, 'V'},
- {"verbose", no_argument, 0, 'v'},
- {0, no_argument, 0, 0}
-};
-
-/* IMPORTS */
-extern char *program_name;
-extern char *program_version;
-
-
-static
-void
-copy_usage()
-{
- fprintf(stderr, "\
-Usage: %s [-vVSgxX] [-I format] [-O format] [-F format]\n\
- [--format=format] [--target=format] [--input-format=format]\n\
- [--output-format=format] [--strip-all] [--strip-debug]\n\
- [--discard-all] [--discard-locals] [--verbose] [--version]\n\
- in-file [out-file]\n", program_name);
- exit(1);
-}
-
-static
-void
-strip_usage()
-{
- fprintf(stderr, "strip %s\n\
-Usage: %s [-vVsSgxX] [-I format] [-O format] [-F format]\n\
- [--format=format] [--target=format] [--input-format=format]\n\
- [--output-format=format] [--strip-all] [--strip-debug]\n\
- [--discard-all] [--discard-locals] [--verbose] [--version] file...\n",
- program_version, program_name);
- exit(1);
-}
-
-
-/* Create a temp file in the same directory as supplied */
-static
-char *
-make_tempname(filename)
-char *filename;
-{
- static char template[] = "stXXXXXX";
- char *tmpname;
- char * slash = strrchr( filename, '/' );
- if (slash != (char *)NULL){
- *slash = 0;
- tmpname = xmalloc(strlen(filename) + sizeof(template) + 1 );
- strcpy(tmpname, filename);
- strcat(tmpname, "/" );
- strcat(tmpname, template);
- mktemp(tmpname );
- *slash = '/';
- } else {
- tmpname = xmalloc(sizeof(template));
- strcpy(tmpname, template);
- mktemp(tmpname);
- }
- return tmpname;
-}
-
-/*
- All the symbols have been read in and point to their owning input section.
- They have been relocated to that they are all relative to the base of
- their owning section. On the way out, all the symbols will be relocated to
- their new location in the output file, through some complex sums.
-
-*/
-static void
-mangle_sections(ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
-{
- asection *current = ibfd->sections;
- for (; current != NULL; current = current->next) {
- current->output_section = bfd_get_section_by_name(obfd, current->name);
- current->output_offset = 0;
- }
-}
-
-/* Choose which symbol entries to copy;
- compact them downward to get rid of the rest.
- Return the number of symbols to be printed. */
-static unsigned int
-filter_symbols (abfd, syms, symcount)
- bfd *abfd;
- asymbol **syms;
- unsigned long symcount;
-{
- asymbol **from, **to;
- unsigned int dst_count = 0;
- asymbol *sym;
- char locals_prefix = bfd_get_symbol_leading_char(abfd) == '_' ? 'L' : '.';
-
- unsigned int src_count;
- for (from = to = syms, src_count = 0; src_count <symcount; src_count++) {
- int keep = 0;
-
- flagword flags = (from[src_count])->flags;
- sym = from[src_count];
- if ((flags & BSF_GLOBAL) /* Keep if external */
- || (sym->section == &bfd_und_section)
- || (bfd_is_com_section (sym->section)))
- keep = 1;
- else if ((flags & BSF_DEBUGGING) != 0) /* debugging symbol */
- keep = strip_symbols != strip_debug;
- else /* local symbol */
- keep = (discard_locals != locals_all)
- && !(discard_locals == locals_start_L &&
- sym->name[0] == locals_prefix);
-
-
- if (keep) {
- to[dst_count++] = from[src_count];
- }
- }
-
- return dst_count;
-}
-
-static
-void
-copy_object(ibfd, obfd)
-bfd *ibfd;
-bfd *obfd;
-{
-
- unsigned int symcount;
-
-
- if (!bfd_set_format(obfd, bfd_get_format(ibfd)))
- bfd_fatal(output_filename);
-
-
- if (verbose)
- printf("copy from %s(%s) to %s(%s)\n",
- ibfd->filename, ibfd->xvec->name,
- obfd->filename, obfd->xvec->name);
-
- if ((bfd_set_start_address(obfd, bfd_get_start_address(ibfd)) == false)
- ||
- (bfd_set_file_flags(obfd, (bfd_get_file_flags(ibfd) &
- (HAS_LINENO | HAS_DEBUG |
- HAS_RELOC | HAS_SYMS | D_PAGED |
- HAS_LOCALS))) == false)) {
- bfd_fatal(bfd_get_filename(ibfd));
- }
-
- /* Copy architecture of input file to output file */
- if (!bfd_set_arch_mach(obfd, bfd_get_arch(ibfd),
- bfd_get_mach(ibfd))) {
- fprintf(stderr, "Output file cannot represent architecture %s\n",
- bfd_printable_arch_mach(bfd_get_arch(ibfd),
- bfd_get_mach(ibfd)));
- }
- if (!bfd_set_format(obfd, bfd_get_format(ibfd)))
- {
- bfd_fatal(ibfd->filename);
- }
-
- sympp = (asymbol **) xmalloc(get_symtab_upper_bound(ibfd));
- symcount = bfd_canonicalize_symtab(ibfd, sympp);
-
- if (strip_symbols == strip_debug || discard_locals != locals_undef)
- symcount = filter_symbols (ibfd, sympp, symcount);
-
-
- bfd_set_symtab(obfd, sympp,
- strip_symbols == strip_all ? 0 : symcount);
-
- /*
- bfd mandates that all output sections be created and sizes set before
- any output is done. Thus, we traverse all sections twice.
- */
- bfd_map_over_sections(ibfd, setup_sections, (void *) obfd);
- bfd_map_over_sections(ibfd, copy_sections, (void *) obfd);
- mangle_sections(ibfd, obfd);
-}
-static
-char *
-cat(a,b,c)
-char *a;
-char *b;
-char *c;
-{
- int size = strlen(a) + strlen(b) + strlen(c);
- char *r = xmalloc(size+1);
- strcpy(r,a);
- strcat(r,b);
- strcat(r,c);
- return r;
-}
-
-static void
-copy_archive(ibfd, obfd)
-bfd *ibfd;
-bfd *obfd;
-{
- bfd **ptr = &obfd->archive_head;
- bfd *this_element;
- /* Read each archive element in turn from the input, copy the
- contents to a temp file, and keep the temp file handle */
- char *dir = cat("./#",make_tempname(""),"cd");
-
- /* Make a temp directory to hold the contents */
- mkdir(dir,0777);
- obfd->has_armap = ibfd->has_armap;
- this_element = bfd_openr_next_archived_file(ibfd, NULL);
- ibfd->archive_head = this_element;
- while (this_element != (bfd *)NULL) {
-
- /* Create an output file for this member */
- char *output_name = cat(dir, "/",this_element->filename);
- bfd *output_bfd = bfd_openw(output_name, output_target);
-
- if (!bfd_set_format(obfd, bfd_get_format(ibfd)))
- bfd_fatal(output_filename);
-
- if (output_bfd == (bfd *)NULL) {
- bfd_fatal(output_name);
- }
- if (bfd_check_format(this_element, bfd_object) == true) {
- copy_object(this_element, output_bfd);
- }
-
- bfd_close(output_bfd);
- /* Now open the newly output file and attatch to our list */
- output_bfd = bfd_openr(output_name, output_target);
- /* Mark it for deletion */
-
- *ptr = output_bfd;
-
- ptr = &output_bfd->next;
- this_element->next = bfd_openr_next_archived_file(ibfd, this_element);
- this_element = this_element->next;
-
- }
- *ptr = (bfd *)NULL;
-
- if (!bfd_close(obfd))
- bfd_fatal(output_filename);
-
- /* Now delete all the files that we opened.
- Construct their names again, unfortunately, but so what;
- we're about to exit anyway. */
- for (this_element = ibfd->archive_head;
- this_element != (bfd *)NULL;
- this_element = this_element->next)
- {
- unlink(cat(dir,"/",this_element->filename));
- }
- rmdir(dir);
- if (!bfd_close(ibfd))
- bfd_fatal(input_filename);
-
-}
-
-static
-void
-copy_file(input_filename, output_filename)
- char *input_filename;
- char *output_filename;
-{
- bfd *ibfd;
-
- ibfd = bfd_openr(input_filename, input_target);
- if (ibfd == NULL)
- bfd_fatal(input_filename);
-
- if (bfd_check_format(ibfd, bfd_object)) {
- bfd * obfd = bfd_openw(output_filename, output_target);
- if (obfd == NULL)
- bfd_fatal(output_filename);
-
- copy_object(ibfd, obfd);
-
- if (ibfd->flags & EXEC_P)
- obfd->flags |= EXEC_P;
- if (!bfd_close(obfd))
- bfd_fatal(output_filename);
-
- if (!bfd_close(ibfd))
- bfd_fatal(input_filename);
- }
- else if (bfd_check_format(ibfd, bfd_archive)) {
- bfd * obfd = bfd_openw(output_filename, output_target);
- if (obfd == NULL)
- bfd_fatal(output_filename);
- copy_archive(ibfd, obfd);
- }
-}
-
-
-
-/** Actually do the work */
-static void
-setup_sections(ibfd, isection, obfd)
- bfd *ibfd;
- sec_ptr isection;
- bfd *obfd;
-{
- sec_ptr osection;
- char *err;
-
- osection = bfd_get_section_by_name(obfd, bfd_section_name(ibfd, isection));
- if (osection == NULL) {
- osection = bfd_make_section(obfd, bfd_section_name(ibfd, isection));
- if (osection == NULL) {
- err = "making";
- goto loser;
- }
- }
-
- if (!bfd_set_section_size(obfd,
- osection,
- bfd_section_size(ibfd, isection))) {
- err = "size";
- goto loser;
- }
-
- if (bfd_set_section_vma(obfd,
- osection,
- bfd_section_vma(ibfd, isection))
- == false) {
- err = "vma";
- goto loser;
- } /* on error */
-
- if (bfd_set_section_alignment(obfd,
- osection,
- bfd_section_alignment(ibfd, isection))
- == false) {
- err = "alignment";
- goto loser;
- } /* on error */
-
- if (!bfd_set_section_flags(obfd, osection,
- bfd_get_section_flags(ibfd, isection))) {
- err = "flags";
- goto loser;
- }
-
- /* All went well */
- return;
-
-loser:
- fprintf(stderr, "%s: file \"%s\", section \"%s\": error in %s: %s\n",
- program_name,
- bfd_get_filename(ibfd), bfd_section_name(ibfd, isection),
- err, bfd_errmsg(bfd_error));
- exit(1);
-} /* setup_sections() */
-
-/*
-Copy all the section related data from an input section
-to an output section
-
-If stripping then don't copy any relocation info
-*/
-static void
-copy_sections(ibfd, isection, obfd)
- bfd *ibfd;
- sec_ptr isection;
- bfd *obfd;
-{
-
- arelent **relpp;
- int relcount;
- sec_ptr osection;
- bfd_size_type size;
- osection = bfd_get_section_by_name(obfd,
- bfd_section_name(ibfd, isection));
-
- size = bfd_get_section_size_before_reloc(isection);
-
- if (size == 0)
- return;
-
- if (strip_symbols == strip_all
- || bfd_get_reloc_upper_bound(ibfd, isection) == 0)
- {
- bfd_set_reloc(obfd, osection, (arelent **)NULL, 0);
- }
- else
- {
- relpp = (arelent **) xmalloc(bfd_get_reloc_upper_bound(ibfd, isection));
- relcount = bfd_canonicalize_reloc(ibfd, isection, relpp, sympp);
- bfd_set_reloc(obfd, osection, relpp, relcount);
- }
-
- isection->_cooked_size = isection->_raw_size;
- isection->reloc_done =true;
-
-
- if (bfd_get_section_flags(ibfd, isection) & SEC_HAS_CONTENTS)
- {
- PTR memhunk = (PTR) xmalloc((unsigned)size);
-
- if (!bfd_get_section_contents(ibfd, isection, memhunk, (file_ptr) 0, size))
- bfd_fatal(bfd_get_filename(ibfd));
-
- if (!bfd_set_section_contents(obfd, osection, memhunk, (file_ptr)0, size))
- bfd_fatal(bfd_get_filename(obfd));
- free(memhunk);
- }
-
-
-}
-int
-main(argc, argv)
- int argc;
- char *argv[];
-{
- int i;
- int c; /* sez which option char */
-
- program_name = argv[0];
-
- strip_symbols = strip_undef; /* default is to strip everything. */
- discard_locals = locals_undef;
-
- bfd_init();
-
- if (is_strip < 0) {
- i = strlen (program_name);
- is_strip = (i >= 5 && strcmp(program_name+i-5,"strip"));
- }
-
- if (is_strip) {
-
- while ((c = getopt_long(argc, argv, "I:O:F:sSgxXVv",
- strip_options, (int *) 0))
- != EOF) {
- switch (c) {
- case 'I':
- input_target = optarg;
- case 'O':
- output_target = optarg;
- break;
- case 'F':
- input_target = output_target = optarg;
- break;
-
- case 's':
- strip_symbols = strip_all;
- break;
- case 'S':
- case 'g':
- strip_symbols = strip_debug;
- break;
- case 'x':
- discard_locals = locals_all;
- break;
- case 'X':
- discard_locals = locals_start_L;
- break;
- case 'v':
- verbose = true;
- show_version = true;
- break;
- case 'V':
- show_version = true;
- break;
- case 0:
- break; /* we've been given a long option */
- default:
- strip_usage ();
- }
- }
-
- i = optind;
-
- /* Default is to strip all symbols. */
- if (strip_symbols == strip_undef && discard_locals == locals_undef)
- strip_symbols = strip_all;
-
- if (output_target == (char *) NULL)
- output_target = input_target;
-
- if (show_version)
- printf ("%s version %s\n", program_name, program_version);
- else if (i == argc)
- strip_usage();
- for ( ; i < argc; i++) {
- char *tmpname = make_tempname(argv[i]);
- copy_file(argv[i], tmpname);
- rename(tmpname, argv[i]);
- }
- return 0;
- }
-
- /* Invoked as "copy", not "strip" */
-
- while ((c = getopt_long(argc, argv, "I:s:O:d:F:b:SgxXVv",
- strip_options, (int *) 0))
- != EOF) {
- switch (c) {
- case 'I':
- case 's': /* "source" - 'I' is preferred */
- input_target = optarg;
- case 'O':
- case 'd': /* "destination" - 'O' is preferred */
- output_target = optarg;
- break;
- case 'F':
- case 'b': /* "both" - 'F' is preferred */
- input_target = output_target = optarg;
- break;
-
- case 'S':
- strip_symbols = strip_all;
- break;
- case 'g':
- strip_symbols = strip_debug;
- break;
- case 'x':
- discard_locals = locals_all;
- break;
- case 'X':
- discard_locals = locals_start_L;
- break;
- case 'v':
- verbose = true;
- show_version = true;
- break;
- case 'V':
- show_version = true;
- break;
- case 0:
- break; /* we've been given a long option */
- default:
- copy_usage ();
- }
- }
-
- if (show_version)
- printf ("%s version %s\n", program_name, program_version);
-
- if (optind == argc)
- if (show_version)
- exit(0);
- else
- copy_usage();
-
- input_filename = argv[optind];
- if (optind + 1 < argc)
- output_filename = argv[optind+1];
-
- /* Default is to strip no symbols. */
- if (strip_symbols == strip_undef && discard_locals == locals_undef)
- strip_symbols = strip_none;
-
- if (input_filename == (char *) NULL)
- copy_usage();
-
- if (output_target == (char *) NULL)
- output_target = input_target;
-
- /* If there is no destination file then create a temp and rename
- the result into the input */
-
- if (output_filename == (char *)NULL) {
- char * tmpname = make_tempname(input_filename);
- copy_file(input_filename, tmpname);
- output_filename = input_filename;
- rename(tmpname, input_filename);
- }
- else {
- copy_file(input_filename, output_filename);
- }
- return 0;
-}
projects / binutils-gdb.git / commitdiff