#include "bfd.h"
#include "sysdep.h"
#include "objalloc.h"
#include "libbfd.h"
#include "libiberty.h"
#if USE_MMAP
#if HAVE_MMAP || HAVE_MPROTECT || HAVE_MADVISE
#include <sys/types.h>
#include <sys/mman.h>
#endif
#if HAVE_MMAP || HAVE_MPROTECT || HAVE_MADVISE
#include <sys/types.h>
#include <sys/mman.h>
#endif
#undef MAP_SHARED
#define MAP_SHARED MAP_PRIVATE
#ifndef MAP_FILE
#define MAP_FILE 0
#endif
#endif
#ifndef S_IXUSR
#define S_IXUSR 0100
#endif
#ifndef S_IXGRP
#define S_IXGRP 0010
#endif
#ifndef S_IXOTH
#define S_IXOTH 0001
#endif
static unsigned int _bfd_id_counter = 0;
bfd *
_bfd_new_bfd (void)
{
bfd *nbfd;
nbfd = bfd_zmalloc (sizeof (bfd));
if (nbfd == NULL)
return NULL;
nbfd->id = _bfd_id_counter++;
nbfd->memory = objalloc_create ();
if (nbfd->memory == NULL)
{
bfd_set_error (bfd_error_no_memory);
free (nbfd);
return NULL;
}
nbfd->arch_info = &bfd_default_arch_struct;
nbfd->direction = no_direction;
nbfd->iostream = NULL;
nbfd->where = 0;
if (!bfd_hash_table_init_n (& nbfd->section_htab, bfd_section_hash_newfunc,
251))
{
free (nbfd);
return NULL;
}
nbfd->sections = NULL;
nbfd->section_last = NULL;
nbfd->format = bfd_unknown;
nbfd->my_archive = NULL;
nbfd->origin = 0;
nbfd->opened_once = FALSE;
nbfd->output_has_begun = FALSE;
nbfd->section_count = 0;
nbfd->usrdata = NULL;
nbfd->cacheable = FALSE;
nbfd->flags = BFD_NO_FLAGS;
nbfd->mtime_set = FALSE;
return nbfd;
}
bfd *
_bfd_new_bfd_contained_in (bfd *obfd)
{
bfd *nbfd;
nbfd = _bfd_new_bfd ();
if (nbfd == NULL)
return NULL;
nbfd->xvec = obfd->xvec;
nbfd->iovec = obfd->iovec;
nbfd->my_archive = obfd;
nbfd->direction = read_direction;
nbfd->target_defaulted = obfd->target_defaulted;
return nbfd;
}
void
_bfd_delete_bfd (bfd *abfd)
{
bfd_hash_table_free (&abfd->section_htab);
objalloc_free ((struct objalloc *) abfd->memory);
memset (abfd, '\0', sizeof (bfd));
free (abfd);
}
bfd *
bfd_fopen (const char *filename, const char *target, const char *mode, int fd)
{
bfd *nbfd;
const bfd_target *target_vec;
nbfd = _bfd_new_bfd ();
#ifdef BFD_TRACK_OPEN_CLOSE
printf ("Opening bfd 0x%lx: \"%s\"\n", (unsigned long) nbfd, filename);
#endif
if (nbfd == NULL)
return NULL;
target_vec = bfd_find_target (target, nbfd);
if (target_vec == NULL)
{
_bfd_delete_bfd (nbfd);
return NULL;
}
#ifdef HAVE_FDOPEN
if (fd != -1)
nbfd->iostream = fdopen (fd, mode);
else
#endif
nbfd->iostream = fopen (filename, mode);
if (nbfd->iostream == NULL)
{
bfd_set_error (bfd_error_system_call);
_bfd_delete_bfd (nbfd);
return NULL;
}
nbfd->filename = filename;
if ((mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a')
&& mode[1] == '+')
nbfd->direction = both_direction;
else if (mode[0] == 'r')
nbfd->direction = read_direction;
else
nbfd->direction = write_direction;
if (! bfd_cache_init (nbfd))
{
_bfd_delete_bfd (nbfd);
return NULL;
}
nbfd->opened_once = TRUE;
if (fd == -1)
bfd_set_cacheable (nbfd, TRUE);
return nbfd;
}
bfd_boolean bfd_mmap_file (abfd, addr)
bfd *abfd ATTRIBUTE_UNUSED;
void *addr ATTRIBUTE_UNUSED;
{
#if USE_MMAP
struct bfd_in_memory *mem;
struct stat statbuf;
FILE *fp;
int fd;
unsigned int prot;
unsigned int flags;
BFD_ASSERT ((abfd->flags & BFD_IN_MEMORY) == 0);
abfd->mtime = bfd_get_mtime (abfd);
mem = bfd_alloc (abfd, sizeof (struct bfd_in_memory));
if (mem == NULL) {
return FALSE;
}
fp = bfd_cache_lookup (abfd);
fd = fileno (fp);
if (fstat (fd, &statbuf) != 0) {
bfd_set_error (bfd_error_system_call);
return FALSE;
}
mem->size = statbuf.st_size;
switch (abfd->direction) {
case no_direction:
prot = 0;
flags = MAP_FILE | MAP_SHARED;
break;
case read_direction:
prot = PROT_READ;
flags = MAP_FILE | MAP_SHARED;
break;
case write_direction:
case both_direction:
prot = PROT_READ | PROT_WRITE;
flags = MAP_FILE | MAP_SHARED;
break;
default:
abort ();
}
if (addr != ((void *) -1)) {
flags |= MAP_FIXED;
} else {
addr = NULL;
}
mem->buffer = mmap (addr, mem->size, prot, flags, fd, 0);
if ((caddr_t) mem->buffer == (caddr_t) -1) {
bfd_set_error (bfd_error_system_call);
return FALSE;
}
BFD_ASSERT ((abfd->flags & BFD_IN_MEMORY) == 0);
bfd_cache_close (abfd);
abfd->iostream = mem;
abfd->flags |= BFD_IN_MEMORY;
return TRUE;
#else
bfd_set_error (bfd_error_system_call);
return FALSE;
#endif
}
bfd *
bfd_memopenr (filename, target, addr, len)
const char *filename;
const char *target;
unsigned char *addr;
bfd_size_type len;
{
bfd *nbfd;
const bfd_target *target_vec;
struct bfd_in_memory *mem;
nbfd = _bfd_new_bfd ();
#ifdef BFD_TRACK_OPEN_CLOSE
printf ("Opening memory bfd 0x%lx for: \"%s\"\n", (unsigned long) nbfd, filename);
#endif
if (nbfd == NULL)
return NULL;
mem = bfd_alloc (nbfd, sizeof (struct bfd_in_memory));
if (mem == NULL)
return NULL;
target_vec = bfd_find_target (target, nbfd);
if (target_vec == NULL)
{
objalloc_free ((struct objalloc *) nbfd->memory);
free (nbfd);
bfd_set_error (bfd_error_invalid_target);
return NULL;
}
mem->buffer = addr;
mem->size = len;
nbfd->filename = filename;
nbfd->direction = read_direction;
nbfd->iostream = mem;
nbfd->flags |= BFD_IN_MEMORY;
return nbfd;
}
bfd *
bfd_openr (const char *filename, const char *target)
{
return bfd_fopen (filename, target, FOPEN_RB, -1);
}
bfd *
bfd_fdopenr (const char *filename, const char *target, int fd)
{
const char *mode;
#if defined(HAVE_FCNTL) && defined(F_GETFL)
int fdflags;
#endif
#if ! defined(HAVE_FCNTL) || ! defined(F_GETFL)
mode = FOPEN_RUB;
#else
fdflags = fcntl (fd, F_GETFL, NULL);
if (fdflags == -1)
{
bfd_set_error (bfd_error_system_call);
return NULL;
}
switch (fdflags & (O_ACCMODE))
{
case O_RDONLY: mode = FOPEN_RB; break;
case O_WRONLY: mode = FOPEN_RUB; break;
case O_RDWR: mode = FOPEN_RUB; break;
default: abort ();
}
#endif
return bfd_fopen (filename, target, mode, fd);
}
bfd *
bfd_openstreamr (const char *filename, const char *target, void *streamarg)
{
FILE *stream = streamarg;
bfd *nbfd;
const bfd_target *target_vec;
nbfd = _bfd_new_bfd ();
if (nbfd == NULL)
return NULL;
target_vec = bfd_find_target (target, nbfd);
if (target_vec == NULL)
{
_bfd_delete_bfd (nbfd);
return NULL;
}
nbfd->iostream = stream;
nbfd->filename = filename;
nbfd->direction = read_direction;
if (! bfd_cache_init (nbfd))
{
_bfd_delete_bfd (nbfd);
return NULL;
}
return nbfd;
}
struct opncls
{
void *stream;
file_ptr (*pread) (struct bfd *abfd, void *stream, void *buf,
file_ptr nbytes, file_ptr offset);
int (*close) (struct bfd *abfd, void *stream);
file_ptr where;
};
static file_ptr
opncls_btell (struct bfd *abfd)
{
struct opncls *vec = abfd->iostream;
return vec->where;
}
static int
opncls_bseek (struct bfd *abfd, file_ptr offset, int whence)
{
struct opncls *vec = abfd->iostream;
switch (whence)
{
case SEEK_SET: vec->where = offset; break;
case SEEK_CUR: vec->where += offset; break;
case SEEK_END: return -1;
}
return 0;
}
static file_ptr
opncls_bread (struct bfd *abfd, void *buf, file_ptr nbytes)
{
struct opncls *vec = abfd->iostream;
file_ptr nread = (vec->pread) (abfd, vec->stream, buf, nbytes, vec->where);
if (nread < 0)
return nread;
vec->where += nread;
return nread;
}
static file_ptr
opncls_bwrite (struct bfd *abfd ATTRIBUTE_UNUSED,
const void *where ATTRIBUTE_UNUSED,
file_ptr nbytes ATTRIBUTE_UNUSED)
{
return -1;
}
static int
opncls_bclose (struct bfd *abfd)
{
struct opncls *vec = abfd->iostream;
int status = 0;
if (vec->close != NULL)
status = (vec->close) (abfd, vec->stream);
abfd->iostream = NULL;
return status;
}
static int
opncls_bflush (struct bfd *abfd ATTRIBUTE_UNUSED)
{
return 0;
}
static int
opncls_bstat (struct bfd *abfd ATTRIBUTE_UNUSED, struct stat *sb)
{
memset (sb, 0, sizeof (*sb));
return 0;
}
static const struct bfd_iovec opncls_iovec = {
&opncls_bread, &opncls_bwrite, &opncls_btell, &opncls_bseek,
&opncls_bclose, &opncls_bflush, &opncls_bstat
};
bfd *
bfd_openr_iovec (const char *filename, const char *target,
void *(*open) (struct bfd *nbfd,
void *open_closure),
void *open_closure,
file_ptr (*pread) (struct bfd *abfd,
void *stream,
void *buf,
file_ptr nbytes,
file_ptr offset),
int (*close) (struct bfd *nbfd,
void *stream))
{
bfd *nbfd;
const bfd_target *target_vec;
struct opncls *vec;
void *stream;
nbfd = _bfd_new_bfd ();
if (nbfd == NULL)
return NULL;
target_vec = bfd_find_target (target, nbfd);
if (target_vec == NULL)
{
_bfd_delete_bfd (nbfd);
return NULL;
}
nbfd->filename = filename;
nbfd->direction = read_direction;
stream = open (nbfd, open_closure);
if (stream == NULL)
{
_bfd_delete_bfd (nbfd);
return NULL;
}
vec = bfd_zalloc (nbfd, sizeof (struct opncls));
vec->stream = stream;
vec->pread = pread;
vec->close = close;
nbfd->iovec = &opncls_iovec;
nbfd->iostream = vec;
return nbfd;
}
bfd *
bfd_openw (const char *filename, const char *target)
{
bfd *nbfd;
const bfd_target *target_vec;
nbfd = _bfd_new_bfd ();
if (nbfd == NULL)
return NULL;
target_vec = bfd_find_target (target, nbfd);
if (target_vec == NULL)
{
_bfd_delete_bfd (nbfd);
return NULL;
}
nbfd->filename = filename;
nbfd->direction = write_direction;
if (bfd_open_file (nbfd) == NULL)
{
bfd_set_error (bfd_error_system_call);
_bfd_delete_bfd (nbfd);
return NULL;
}
return nbfd;
}
bfd_boolean
bfd_close (bfd *abfd)
{
bfd_boolean ret = TRUE;
#ifdef BFD_TRACK_OPEN_CLOSE
printf ("Closing bfd 0x%lx: \"%s\"\n", (unsigned long) abfd, abfd->filename);
#endif
if (bfd_write_p (abfd))
{
if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd)))
return FALSE;
}
if (! BFD_SEND (abfd, _close_and_cleanup, (abfd)))
return FALSE;
if (!(abfd->flags & BFD_IN_MEMORY))
ret = abfd->iovec->bclose (abfd);
else
ret = TRUE;
if (ret
&& abfd->direction == write_direction
&& abfd->flags & EXEC_P)
{
struct stat buf;
if (stat (abfd->filename, &buf) == 0)
{
unsigned int mask = umask (0);
umask (mask);
chmod (abfd->filename,
(0777
& (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask))));
}
}
ret = _bfd_io_close (abfd);
_bfd_delete_bfd (abfd);
return ret;
}
bfd_boolean
bfd_close_all_done (bfd *abfd)
{
bfd_boolean ret;
ret = _bfd_io_close (abfd);
if (ret
&& abfd->direction == write_direction
&& abfd->flags & EXEC_P)
{
struct stat buf;
if (stat (abfd->filename, &buf) == 0)
{
unsigned int mask = umask (0);
umask (mask);
chmod (abfd->filename,
(0777
& (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask))));
}
}
_bfd_delete_bfd (abfd);
return ret;
}
bfd *
bfd_create (const char *filename, bfd *templ)
{
bfd *nbfd;
nbfd = _bfd_new_bfd ();
if (nbfd == NULL)
return NULL;
nbfd->filename = filename;
if (templ)
nbfd->xvec = templ->xvec;
nbfd->direction = no_direction;
bfd_set_format (nbfd, bfd_object);
return nbfd;
}
bfd_boolean
bfd_make_writable (bfd *abfd)
{
struct bfd_in_memory *bim;
if (abfd->direction != no_direction)
{
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
}
bim = bfd_malloc (sizeof (struct bfd_in_memory));
abfd->iostream = bim;
bim->size = 0;
bim->buffer = 0;
abfd->flags |= BFD_IN_MEMORY;
abfd->direction = write_direction;
abfd->where = 0;
return TRUE;
}
bfd_boolean
bfd_make_readable (bfd *abfd)
{
if (abfd->direction != write_direction || !(abfd->flags & BFD_IN_MEMORY))
{
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
}
if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd)))
return FALSE;
if (! BFD_SEND (abfd, _close_and_cleanup, (abfd)))
return FALSE;
abfd->arch_info = &bfd_default_arch_struct;
abfd->where = 0;
abfd->format = bfd_unknown;
abfd->my_archive = NULL;
abfd->origin = 0;
abfd->opened_once = FALSE;
abfd->output_has_begun = FALSE;
abfd->section_count = 0;
abfd->usrdata = NULL;
abfd->cacheable = FALSE;
abfd->flags = BFD_IN_MEMORY;
abfd->mtime_set = FALSE;
abfd->target_defaulted = TRUE;
abfd->direction = read_direction;
abfd->sections = 0;
abfd->symcount = 0;
abfd->outsymbols = 0;
abfd->tdata.any = 0;
bfd_section_list_clear (abfd);
bfd_check_format (abfd, bfd_object);
return TRUE;
}
void *
bfd_alloc (bfd *abfd, bfd_size_type size)
{
void *ret;
if (size != (unsigned long) size)
{
bfd_set_error (bfd_error_no_memory);
return NULL;
}
ret = objalloc_alloc (abfd->memory, (unsigned long) size);
if (ret == NULL)
bfd_set_error (bfd_error_no_memory);
return ret;
}
void *
bfd_alloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size)
{
void *ret;
if ((nmemb | size) >= HALF_BFD_SIZE_TYPE
&& size != 0
&& nmemb > ~(bfd_size_type) 0 / size)
{
bfd_set_error (bfd_error_no_memory);
return NULL;
}
size *= nmemb;
if (size != (unsigned long) size)
{
bfd_set_error (bfd_error_no_memory);
return NULL;
}
ret = objalloc_alloc (abfd->memory, (unsigned long) size);
if (ret == NULL)
bfd_set_error (bfd_error_no_memory);
return ret;
}
void *
bfd_zalloc (bfd *abfd, bfd_size_type size)
{
void *res;
res = bfd_alloc (abfd, size);
if (res)
memset (res, 0, (size_t) size);
return res;
}
void *
bfd_zalloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size)
{
void *res;
if ((nmemb | size) >= HALF_BFD_SIZE_TYPE
&& size != 0
&& nmemb > ~(bfd_size_type) 0 / size)
{
bfd_set_error (bfd_error_no_memory);
return NULL;
}
size *= nmemb;
res = bfd_alloc (abfd, size);
if (res)
memset (res, 0, (size_t) size);
return res;
}
void
bfd_release (bfd *abfd, void *block)
{
objalloc_free_block ((struct objalloc *) abfd->memory, block);
}
#define GNU_DEBUGLINK ".gnu_debuglink"
unsigned long
bfd_calc_gnu_debuglink_crc32 (unsigned long crc,
const unsigned char *buf,
bfd_size_type len)
{
static const unsigned long crc32_table[256] =
{
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
0x2d02ef8d
};
const unsigned char *end;
crc = ~crc & 0xffffffff;
for (end = buf + len; buf < end; ++ buf)
crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8);
return ~crc & 0xffffffff;;
}
static char *
get_debug_link_info (bfd *abfd, unsigned long *crc32_out)
{
asection *sect;
unsigned long crc32;
bfd_byte *contents;
int crc_offset;
char *name;
BFD_ASSERT (abfd);
BFD_ASSERT (crc32_out);
sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK);
if (sect == NULL)
return NULL;
if (!bfd_malloc_and_get_section (abfd, sect, &contents))
{
if (contents != NULL)
free (contents);
return NULL;
}
name = (char *) contents;
crc_offset = strlen (name) + 1;
crc_offset = (crc_offset + 3) & ~3;
crc32 = bfd_get_32 (abfd, contents + crc_offset);
*crc32_out = crc32;
return name;
}
static bfd_boolean
separate_debug_file_exists (const char *name, const unsigned long crc)
{
static unsigned char buffer [8 * 1024];
unsigned long file_crc = 0;
int fd;
bfd_size_type count;
BFD_ASSERT (name);
fd = open (name, O_RDONLY);
if (fd < 0)
return FALSE;
while ((count = read (fd, buffer, sizeof (buffer))) > 0)
file_crc = bfd_calc_gnu_debuglink_crc32 (file_crc, buffer, count);
close (fd);
return crc == file_crc;
}
static char *
find_separate_debug_file (bfd *abfd, const char *debug_file_directory)
{
char *basename;
char *dir;
char *debugfile;
unsigned long crc32;
int i;
BFD_ASSERT (abfd);
if (debug_file_directory == NULL)
debug_file_directory = ".";
if (! abfd->filename)
return NULL;
basename = get_debug_link_info (abfd, & crc32);
if (basename == NULL)
return NULL;
if (strlen (basename) < 1)
{
free (basename);
return NULL;
}
dir = strdup (abfd->filename);
if (dir == NULL)
{
free (basename);
return NULL;
}
BFD_ASSERT (strlen (dir) != 0);
for (i = strlen (dir) - 1; i >= 0; i--)
if (IS_DIR_SEPARATOR (dir[i]))
break;
dir[i + 1] = '\0';
BFD_ASSERT (dir[i] == '/' || dir[0] == '\0');
debugfile = malloc (strlen (debug_file_directory) + 1
+ strlen (dir)
+ strlen (".debug/")
+ strlen (basename)
+ 1);
if (debugfile == NULL)
{
free (basename);
free (dir);
return NULL;
}
strcpy (debugfile, dir);
strcat (debugfile, basename);
if (separate_debug_file_exists (debugfile, crc32))
{
free (basename);
free (dir);
return debugfile;
}
strcpy (debugfile, dir);
strcat (debugfile, ".debug/");
strcat (debugfile, basename);
if (separate_debug_file_exists (debugfile, crc32))
{
free (basename);
free (dir);
return debugfile;
}
strcpy (debugfile, debug_file_directory);
i = strlen (debug_file_directory) - 1;
if (i > 0
&& debug_file_directory[i] != '/'
&& dir[0] != '/')
strcat (debugfile, "/");
strcat (debugfile, dir);
strcat (debugfile, basename);
if (separate_debug_file_exists (debugfile, crc32))
{
free (basename);
free (dir);
return debugfile;
}
free (debugfile);
free (basename);
free (dir);
return NULL;
}
char *
bfd_follow_gnu_debuglink (bfd *abfd, const char *dir)
{
return find_separate_debug_file (abfd, dir);
}
asection *
bfd_create_gnu_debuglink_section (bfd *abfd, const char *filename)
{
asection *sect;
bfd_size_type debuglink_size;
if (abfd == NULL || filename == NULL)
{
bfd_set_error (bfd_error_invalid_operation);
return NULL;
}
filename = lbasename (filename);
sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK);
if (sect)
{
bfd_set_error (bfd_error_invalid_operation);
return NULL;
}
sect = bfd_make_section (abfd, GNU_DEBUGLINK);
if (sect == NULL)
return NULL;
if (! bfd_set_section_flags (abfd, sect,
SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING))
return NULL;
debuglink_size = strlen (filename) + 1;
debuglink_size += 3;
debuglink_size &= ~3;
debuglink_size += 4;
if (! bfd_set_section_size (abfd, sect, debuglink_size))
return NULL;
return sect;
}
bfd_boolean
bfd_fill_in_gnu_debuglink_section (bfd *abfd,
struct bfd_section *sect,
const char *filename)
{
bfd_size_type debuglink_size;
unsigned long crc32;
char * contents;
bfd_size_type crc_offset;
FILE * handle;
static unsigned char buffer[8 * 1024];
size_t count;
if (abfd == NULL || sect == NULL || filename == NULL)
{
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
}
handle = fopen (filename, FOPEN_RB);
if (handle == NULL)
{
bfd_set_error (bfd_error_system_call);
return FALSE;
}
crc32 = 0;
while ((count = fread (buffer, 1, sizeof buffer, handle)) > 0)
crc32 = bfd_calc_gnu_debuglink_crc32 (crc32, buffer, count);
fclose (handle);
filename = lbasename (filename);
debuglink_size = strlen (filename) + 1;
debuglink_size += 3;
debuglink_size &= ~3;
debuglink_size += 4;
contents = malloc (debuglink_size);
if (contents == NULL)
{
bfd_set_error (bfd_error_no_memory);
return FALSE;
}
strcpy (contents, filename);
crc_offset = debuglink_size - 4;
bfd_put_32 (abfd, crc32, contents + crc_offset);
if (! bfd_set_section_contents (abfd, sect, contents, 0, debuglink_size))
{
free (contents);
return FALSE;
}
return TRUE;
}