416 lines
9.6 KiB
C
416 lines
9.6 KiB
C
/*** copy.c -- copy object file from input to output, optionally massaging it */
|
|
#include "sysdep.h"
|
|
#include "bfd.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;
|
|
|
|
/* 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_SYMS | D_PAGED |
|
|
HAS_LOCALS))) == false) ||
|
|
bfd_set_start_address(obfd, bfd_get_start_address(ibfd)) == false)
|
|
bfd_fatal(bfd_get_filename(ibfd));
|
|
|
|
/* Copy architecture of input file to output file */
|
|
if (!bfd_set_arch_mach(obfd, bfd_get_architecture(ibfd),
|
|
bfd_get_machine(ibfd))) {
|
|
fprintf(stderr, "Output file cannot represent architecture %s\n",
|
|
bfd_printable_arch_mach(bfd_get_architecture(ibfd),
|
|
bfd_get_machine(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, strip == true ? 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 (!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_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;
|
|
unsigned long size;
|
|
osection = bfd_get_section_by_name(obfd,
|
|
bfd_section_name(ibfd, isection));
|
|
|
|
size = bfd_section_size(ibfd, isection);
|
|
|
|
if (size == 0)
|
|
return;
|
|
|
|
if (strip == true || 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)
|
|
{
|
|
unsigned char *memhunk = (unsigned char *) xmalloc(size);
|
|
|
|
if (!bfd_get_section_contents(ibfd, isection, memhunk, 0, size))
|
|
bfd_fatal(bfd_get_filename(ibfd));
|
|
|
|
if (!bfd_set_section_contents(obfd, osection, memhunk, 0, size))
|
|
bfd_fatal(bfd_get_filename(obfd));
|
|
free(memhunk);
|
|
}
|
|
|
|
|
|
}
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int i;
|
|
|
|
program_name = argv[0];
|
|
|
|
if (strcmp(program_name,"strip") == 0) {
|
|
strip = true;
|
|
}
|
|
|
|
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':
|
|
strip = true;
|
|
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 1;
|
|
}
|