/* 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" 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 strip; 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; /* IMPORTS */ extern char *program_name; extern char *xmalloc(); static void usage() { fprintf(stderr, "Usage %s [-S][-s srcfmt] [-d dtfmt] [-b bothfmts] infile [outfile]\n", 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; } } 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); bfd_set_symtab(obfd, sympp, is_strip ? 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 = isection->size; if (size == 0) return; if (is_strip || get_reloc_upper_bound(ibfd, isection) == 0) { bfd_set_reloc(obfd, osection, (arelent **)NULL, 0); } else { relpp = (arelent **) xmalloc(get_reloc_upper_bound(ibfd, isection)); relcount = bfd_canonicalize_reloc(ibfd, isection, relpp, sympp); bfd_set_reloc(obfd, osection, relpp, relcount); } 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; program_name = argv[0]; bfd_init(); if (is_strip < 0) { i = strlen (program_name); is_strip = (i >= 5 && strcmp(program_name+i-5,"strip")); } for (i = 1; i < argc; i++) { if (argv[i][0] == '-') { switch (argv[i][1]) { case 'v': verbose = true; break; case 'b': i++; input_target = output_target = argv[i]; break; case 'S': is_strip = 1; break; case 's': i++; input_target = argv[i]; break; case 'd': i++; output_target = argv[i]; break; default: usage(); } } else { if (input_filename) { output_filename = argv[i]; } else { input_filename = argv[i]; } } } if (input_filename == (char *) NULL) 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; }