0aecce1e34
(this fixes several linker problems and coredumps) These bits are taken from the FSF anoncvs repo on 10-April-2002 13:24 Zulu
1473 lines
35 KiB
C
1473 lines
35 KiB
C
/* Assorted BFD support routines, only used internally.
|
||
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
|
||
2000, 2001, 2002
|
||
Free Software Foundation, Inc.
|
||
Written by Cygnus Support.
|
||
|
||
This file is part of BFD, the Binary File Descriptor library.
|
||
|
||
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
||
|
||
#include "bfd.h"
|
||
#include "sysdep.h"
|
||
#include "libbfd.h"
|
||
|
||
#ifndef HAVE_GETPAGESIZE
|
||
#define getpagesize() 2048
|
||
#endif
|
||
|
||
static size_t real_read PARAMS ((PTR, size_t, size_t, FILE *));
|
||
|
||
/*
|
||
SECTION
|
||
Internal functions
|
||
|
||
DESCRIPTION
|
||
These routines are used within BFD.
|
||
They are not intended for export, but are documented here for
|
||
completeness.
|
||
*/
|
||
|
||
/* A routine which is used in target vectors for unsupported
|
||
operations. */
|
||
|
||
boolean
|
||
bfd_false (ignore)
|
||
bfd *ignore ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return false;
|
||
}
|
||
|
||
/* A routine which is used in target vectors for supported operations
|
||
which do not actually do anything. */
|
||
|
||
boolean
|
||
bfd_true (ignore)
|
||
bfd *ignore ATTRIBUTE_UNUSED;
|
||
{
|
||
return true;
|
||
}
|
||
|
||
/* A routine which is used in target vectors for unsupported
|
||
operations which return a pointer value. */
|
||
|
||
PTR
|
||
bfd_nullvoidptr (ignore)
|
||
bfd *ignore ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return NULL;
|
||
}
|
||
|
||
int
|
||
bfd_0 (ignore)
|
||
bfd *ignore ATTRIBUTE_UNUSED;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
unsigned int
|
||
bfd_0u (ignore)
|
||
bfd *ignore ATTRIBUTE_UNUSED;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
long
|
||
bfd_0l (ignore)
|
||
bfd *ignore ATTRIBUTE_UNUSED;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/* A routine which is used in target vectors for unsupported
|
||
operations which return -1 on error. */
|
||
|
||
long
|
||
_bfd_n1 (ignore_abfd)
|
||
bfd *ignore_abfd ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return -1;
|
||
}
|
||
|
||
void
|
||
bfd_void (ignore)
|
||
bfd *ignore ATTRIBUTE_UNUSED;
|
||
{
|
||
}
|
||
|
||
boolean
|
||
_bfd_nocore_core_file_matches_executable_p (ignore_core_bfd, ignore_exec_bfd)
|
||
bfd *ignore_core_bfd ATTRIBUTE_UNUSED;
|
||
bfd *ignore_exec_bfd ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return false;
|
||
}
|
||
|
||
/* Routine to handle core_file_failing_command entry point for targets
|
||
without core file support. */
|
||
|
||
char *
|
||
_bfd_nocore_core_file_failing_command (ignore_abfd)
|
||
bfd *ignore_abfd ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return (char *)NULL;
|
||
}
|
||
|
||
/* Routine to handle core_file_failing_signal entry point for targets
|
||
without core file support. */
|
||
|
||
int
|
||
_bfd_nocore_core_file_failing_signal (ignore_abfd)
|
||
bfd *ignore_abfd ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return 0;
|
||
}
|
||
|
||
const bfd_target *
|
||
_bfd_dummy_target (ignore_abfd)
|
||
bfd *ignore_abfd ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return 0;
|
||
}
|
||
|
||
/* Allocate memory using malloc. */
|
||
|
||
PTR
|
||
bfd_malloc (size)
|
||
bfd_size_type size;
|
||
{
|
||
PTR ptr;
|
||
|
||
if (size != (size_t) size)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return NULL;
|
||
}
|
||
|
||
ptr = (PTR) malloc ((size_t) size);
|
||
if (ptr == NULL && (size_t) size != 0)
|
||
bfd_set_error (bfd_error_no_memory);
|
||
|
||
return ptr;
|
||
}
|
||
|
||
/* Reallocate memory using realloc. */
|
||
|
||
PTR
|
||
bfd_realloc (ptr, size)
|
||
PTR ptr;
|
||
bfd_size_type size;
|
||
{
|
||
PTR ret;
|
||
|
||
if (size != (size_t) size)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return NULL;
|
||
}
|
||
|
||
if (ptr == NULL)
|
||
ret = malloc ((size_t) size);
|
||
else
|
||
ret = realloc (ptr, (size_t) size);
|
||
|
||
if (ret == NULL && (size_t) size != 0)
|
||
bfd_set_error (bfd_error_no_memory);
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Allocate memory using malloc and clear it. */
|
||
|
||
PTR
|
||
bfd_zmalloc (size)
|
||
bfd_size_type size;
|
||
{
|
||
PTR ptr;
|
||
|
||
if (size != (size_t) size)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return NULL;
|
||
}
|
||
|
||
ptr = (PTR) malloc ((size_t) size);
|
||
|
||
if ((size_t) size != 0)
|
||
{
|
||
if (ptr == NULL)
|
||
bfd_set_error (bfd_error_no_memory);
|
||
else
|
||
memset (ptr, 0, (size_t) size);
|
||
}
|
||
|
||
return ptr;
|
||
}
|
||
|
||
/* Some IO code */
|
||
|
||
/* Note that archive entries don't have streams; they share their parent's.
|
||
This allows someone to play with the iostream behind BFD's back.
|
||
|
||
Also, note that the origin pointer points to the beginning of a file's
|
||
contents (0 for non-archive elements). For archive entries this is the
|
||
first octet in the file, NOT the beginning of the archive header. */
|
||
|
||
static size_t
|
||
real_read (where, a, b, file)
|
||
PTR where;
|
||
size_t a;
|
||
size_t b;
|
||
FILE *file;
|
||
{
|
||
/* FIXME - this looks like an optimization, but it's really to cover
|
||
up for a feature of some OSs (not solaris - sigh) that
|
||
ld/pe-dll.c takes advantage of (apparently) when it creates BFDs
|
||
internally and tries to link against them. BFD seems to be smart
|
||
enough to realize there are no symbol records in the "file" that
|
||
doesn't exist but attempts to read them anyway. On Solaris,
|
||
attempting to read zero bytes from a NULL file results in a core
|
||
dump, but on other platforms it just returns zero bytes read.
|
||
This makes it to something reasonable. - DJ */
|
||
if (a == 0 || b == 0)
|
||
return 0;
|
||
|
||
|
||
#if defined (__VAX) && defined (VMS)
|
||
/* Apparently fread on Vax VMS does not keep the record length
|
||
information. */
|
||
return read (fileno (file), where, a * b);
|
||
#else
|
||
return fread (where, a, b, file);
|
||
#endif
|
||
}
|
||
|
||
/* Return value is amount read. */
|
||
|
||
bfd_size_type
|
||
bfd_bread (ptr, size, abfd)
|
||
PTR ptr;
|
||
bfd_size_type size;
|
||
bfd *abfd;
|
||
{
|
||
size_t nread;
|
||
|
||
if ((abfd->flags & BFD_IN_MEMORY) != 0)
|
||
{
|
||
struct bfd_in_memory *bim;
|
||
bfd_size_type get;
|
||
|
||
bim = (struct bfd_in_memory *) abfd->iostream;
|
||
get = size;
|
||
if (abfd->where + get > bim->size)
|
||
{
|
||
if (bim->size < (bfd_size_type) abfd->where)
|
||
get = 0;
|
||
else
|
||
get = bim->size - abfd->where;
|
||
bfd_set_error (bfd_error_file_truncated);
|
||
}
|
||
memcpy (ptr, bim->buffer + abfd->where, (size_t) get);
|
||
abfd->where += get;
|
||
return get;
|
||
}
|
||
|
||
nread = real_read (ptr, 1, (size_t) size, bfd_cache_lookup (abfd));
|
||
if (nread != (size_t) -1)
|
||
abfd->where += nread;
|
||
|
||
/* Set bfd_error if we did not read as much data as we expected.
|
||
|
||
If the read failed due to an error set the bfd_error_system_call,
|
||
else set bfd_error_file_truncated.
|
||
|
||
A BFD backend may wish to override bfd_error_file_truncated to
|
||
provide something more useful (eg. no_symbols or wrong_format). */
|
||
if (nread != size)
|
||
{
|
||
if (ferror (bfd_cache_lookup (abfd)))
|
||
bfd_set_error (bfd_error_system_call);
|
||
else
|
||
bfd_set_error (bfd_error_file_truncated);
|
||
}
|
||
|
||
return nread;
|
||
}
|
||
|
||
/* The window support stuff should probably be broken out into
|
||
another file.... */
|
||
/* The idea behind the next and refcount fields is that one mapped
|
||
region can suffice for multiple read-only windows or multiple
|
||
non-overlapping read-write windows. It's not implemented yet
|
||
though. */
|
||
struct _bfd_window_internal {
|
||
struct _bfd_window_internal *next;
|
||
PTR data;
|
||
bfd_size_type size;
|
||
int refcount : 31; /* should be enough... */
|
||
unsigned mapped : 1; /* 1 = mmap, 0 = malloc */
|
||
};
|
||
|
||
void
|
||
bfd_init_window (windowp)
|
||
bfd_window *windowp;
|
||
{
|
||
windowp->data = 0;
|
||
windowp->i = 0;
|
||
windowp->size = 0;
|
||
}
|
||
|
||
/* Currently, if USE_MMAP is undefined, none if the window stuff is
|
||
used. Okay, so it's mis-named. At least the command-line option
|
||
"--without-mmap" is more obvious than "--without-windows" or some
|
||
such. */
|
||
#ifdef USE_MMAP
|
||
|
||
#undef HAVE_MPROTECT /* code's not tested yet */
|
||
|
||
#if HAVE_MMAP || HAVE_MPROTECT || HAVE_MADVISE
|
||
#include <sys/mman.h>
|
||
#endif
|
||
|
||
#ifndef MAP_FILE
|
||
#define MAP_FILE 0
|
||
#endif
|
||
|
||
static int debug_windows;
|
||
|
||
void
|
||
bfd_free_window (windowp)
|
||
bfd_window *windowp;
|
||
{
|
||
bfd_window_internal *i = windowp->i;
|
||
windowp->i = 0;
|
||
windowp->data = 0;
|
||
if (i == 0)
|
||
return;
|
||
i->refcount--;
|
||
if (debug_windows)
|
||
fprintf (stderr, "freeing window @%p<%p,%lx,%p>\n",
|
||
windowp, windowp->data, windowp->size, windowp->i);
|
||
if (i->refcount != 0)
|
||
return;
|
||
|
||
if (i->mapped)
|
||
{
|
||
#ifdef HAVE_MMAP
|
||
munmap (i->data, i->size);
|
||
goto no_free;
|
||
#else
|
||
abort ();
|
||
#endif
|
||
}
|
||
#ifdef HAVE_MPROTECT
|
||
mprotect (i->data, i->size, PROT_READ | PROT_WRITE);
|
||
#endif
|
||
free (i->data);
|
||
#ifdef HAVE_MMAP
|
||
no_free:
|
||
#endif
|
||
i->data = 0;
|
||
/* There should be no more references to i at this point. */
|
||
free (i);
|
||
}
|
||
|
||
static int ok_to_map = 1;
|
||
|
||
boolean
|
||
bfd_get_file_window (abfd, offset, size, windowp, writable)
|
||
bfd *abfd;
|
||
file_ptr offset;
|
||
bfd_size_type size;
|
||
bfd_window *windowp;
|
||
boolean writable;
|
||
{
|
||
static size_t pagesize;
|
||
bfd_window_internal *i = windowp->i;
|
||
bfd_size_type size_to_alloc = size;
|
||
|
||
if (debug_windows)
|
||
fprintf (stderr, "bfd_get_file_window (%p, %6ld, %6ld, %p<%p,%lx,%p>, %d)",
|
||
abfd, (long) offset, (long) size,
|
||
windowp, windowp->data, (unsigned long) windowp->size,
|
||
windowp->i, writable);
|
||
|
||
/* Make sure we know the page size, so we can be friendly to mmap. */
|
||
if (pagesize == 0)
|
||
pagesize = getpagesize ();
|
||
if (pagesize == 0)
|
||
abort ();
|
||
|
||
if (i == 0)
|
||
{
|
||
i = ((bfd_window_internal *)
|
||
bfd_zmalloc ((bfd_size_type) sizeof (bfd_window_internal)));
|
||
windowp->i = i;
|
||
if (i == 0)
|
||
return false;
|
||
i->data = 0;
|
||
}
|
||
#ifdef HAVE_MMAP
|
||
if (ok_to_map
|
||
&& (i->data == 0 || i->mapped == 1)
|
||
&& (abfd->flags & BFD_IN_MEMORY) == 0)
|
||
{
|
||
file_ptr file_offset, offset2;
|
||
size_t real_size;
|
||
int fd;
|
||
FILE *f;
|
||
|
||
/* Find the real file and the real offset into it. */
|
||
while (abfd->my_archive != NULL)
|
||
{
|
||
offset += abfd->origin;
|
||
abfd = abfd->my_archive;
|
||
}
|
||
f = bfd_cache_lookup (abfd);
|
||
fd = fileno (f);
|
||
|
||
/* Compute offsets and size for mmap and for the user's data. */
|
||
offset2 = offset % pagesize;
|
||
if (offset2 < 0)
|
||
abort ();
|
||
file_offset = offset - offset2;
|
||
real_size = offset + size - file_offset;
|
||
real_size = real_size + pagesize - 1;
|
||
real_size -= real_size % pagesize;
|
||
|
||
/* If we're re-using a memory region, make sure it's big enough. */
|
||
if (i->data && i->size < size)
|
||
{
|
||
munmap (i->data, i->size);
|
||
i->data = 0;
|
||
}
|
||
i->data = mmap (i->data, real_size,
|
||
writable ? PROT_WRITE | PROT_READ : PROT_READ,
|
||
(writable
|
||
? MAP_FILE | MAP_PRIVATE
|
||
: MAP_FILE | MAP_SHARED),
|
||
fd, file_offset);
|
||
if (i->data == (PTR) -1)
|
||
{
|
||
/* An error happened. Report it, or try using malloc, or
|
||
something. */
|
||
bfd_set_error (bfd_error_system_call);
|
||
i->data = 0;
|
||
windowp->data = 0;
|
||
if (debug_windows)
|
||
fprintf (stderr, "\t\tmmap failed!\n");
|
||
return false;
|
||
}
|
||
if (debug_windows)
|
||
fprintf (stderr, "\n\tmapped %ld at %p, offset is %ld\n",
|
||
(long) real_size, i->data, (long) offset2);
|
||
i->size = real_size;
|
||
windowp->data = (PTR) ((bfd_byte *) i->data + offset2);
|
||
windowp->size = size;
|
||
i->mapped = 1;
|
||
return true;
|
||
}
|
||
else if (debug_windows)
|
||
{
|
||
if (ok_to_map)
|
||
fprintf (stderr, _("not mapping: data=%lx mapped=%d\n"),
|
||
(unsigned long) i->data, (int) i->mapped);
|
||
else
|
||
fprintf (stderr, _("not mapping: env var not set\n"));
|
||
}
|
||
#else
|
||
ok_to_map = 0;
|
||
#endif
|
||
|
||
#ifdef HAVE_MPROTECT
|
||
if (!writable)
|
||
{
|
||
size_to_alloc += pagesize - 1;
|
||
size_to_alloc -= size_to_alloc % pagesize;
|
||
}
|
||
#endif
|
||
if (debug_windows)
|
||
fprintf (stderr, "\n\t%s(%6ld)",
|
||
i->data ? "realloc" : " malloc", (long) size_to_alloc);
|
||
i->data = (PTR) bfd_realloc (i->data, size_to_alloc);
|
||
if (debug_windows)
|
||
fprintf (stderr, "\t-> %p\n", i->data);
|
||
i->refcount = 1;
|
||
if (i->data == NULL)
|
||
{
|
||
if (size_to_alloc == 0)
|
||
return true;
|
||
return false;
|
||
}
|
||
if (bfd_seek (abfd, offset, SEEK_SET) != 0)
|
||
return false;
|
||
i->size = bfd_bread (i->data, size, abfd);
|
||
if (i->size != size)
|
||
return false;
|
||
i->mapped = 0;
|
||
#ifdef HAVE_MPROTECT
|
||
if (!writable)
|
||
{
|
||
if (debug_windows)
|
||
fprintf (stderr, "\tmprotect (%p, %ld, PROT_READ)\n", i->data,
|
||
(long) i->size);
|
||
mprotect (i->data, i->size, PROT_READ);
|
||
}
|
||
#endif
|
||
windowp->data = i->data;
|
||
windowp->size = i->size;
|
||
return true;
|
||
}
|
||
|
||
#endif /* USE_MMAP */
|
||
|
||
bfd_size_type
|
||
bfd_bwrite (ptr, size, abfd)
|
||
const PTR ptr;
|
||
bfd_size_type size;
|
||
bfd *abfd;
|
||
{
|
||
size_t nwrote;
|
||
|
||
if ((abfd->flags & BFD_IN_MEMORY) != 0)
|
||
{
|
||
struct bfd_in_memory *bim = (struct bfd_in_memory *) (abfd->iostream);
|
||
size = (size_t) size;
|
||
if (abfd->where + size > bim->size)
|
||
{
|
||
bfd_size_type newsize, oldsize;
|
||
|
||
oldsize = (bim->size + 127) & ~(bfd_size_type) 127;
|
||
bim->size = abfd->where + size;
|
||
/* Round up to cut down on memory fragmentation */
|
||
newsize = (bim->size + 127) & ~(bfd_size_type) 127;
|
||
if (newsize > oldsize)
|
||
{
|
||
bim->buffer = bfd_realloc (bim->buffer, newsize);
|
||
if (bim->buffer == 0)
|
||
{
|
||
bim->size = 0;
|
||
return 0;
|
||
}
|
||
}
|
||
}
|
||
memcpy (bim->buffer + abfd->where, ptr, (size_t) size);
|
||
abfd->where += size;
|
||
return size;
|
||
}
|
||
|
||
nwrote = fwrite (ptr, 1, (size_t) size, bfd_cache_lookup (abfd));
|
||
if (nwrote != (size_t) -1)
|
||
abfd->where += nwrote;
|
||
if (nwrote != size)
|
||
{
|
||
#ifdef ENOSPC
|
||
errno = ENOSPC;
|
||
#endif
|
||
bfd_set_error (bfd_error_system_call);
|
||
}
|
||
return nwrote;
|
||
}
|
||
|
||
/*
|
||
INTERNAL_FUNCTION
|
||
bfd_write_bigendian_4byte_int
|
||
|
||
SYNOPSIS
|
||
boolean bfd_write_bigendian_4byte_int (bfd *, unsigned int);
|
||
|
||
DESCRIPTION
|
||
Write a 4 byte integer @var{i} to the output BFD @var{abfd}, in big
|
||
endian order regardless of what else is going on. This is useful in
|
||
archives.
|
||
|
||
*/
|
||
boolean
|
||
bfd_write_bigendian_4byte_int (abfd, i)
|
||
bfd *abfd;
|
||
unsigned int i;
|
||
{
|
||
bfd_byte buffer[4];
|
||
bfd_putb32 ((bfd_vma) i, buffer);
|
||
return bfd_bwrite ((PTR) buffer, (bfd_size_type) 4, abfd) == 4;
|
||
}
|
||
|
||
bfd_vma
|
||
bfd_tell (abfd)
|
||
bfd *abfd;
|
||
{
|
||
file_ptr ptr;
|
||
|
||
if ((abfd->flags & BFD_IN_MEMORY) != 0)
|
||
return abfd->where;
|
||
|
||
ptr = ftell (bfd_cache_lookup (abfd));
|
||
|
||
if (abfd->my_archive)
|
||
ptr -= abfd->origin;
|
||
abfd->where = ptr;
|
||
return ptr;
|
||
}
|
||
|
||
int
|
||
bfd_flush (abfd)
|
||
bfd *abfd;
|
||
{
|
||
if ((abfd->flags & BFD_IN_MEMORY) != 0)
|
||
return 0;
|
||
return fflush (bfd_cache_lookup(abfd));
|
||
}
|
||
|
||
/* Returns 0 for success, negative value for failure (in which case
|
||
bfd_get_error can retrieve the error code). */
|
||
int
|
||
bfd_stat (abfd, statbuf)
|
||
bfd *abfd;
|
||
struct stat *statbuf;
|
||
{
|
||
FILE *f;
|
||
int result;
|
||
|
||
if ((abfd->flags & BFD_IN_MEMORY) != 0)
|
||
abort ();
|
||
|
||
f = bfd_cache_lookup (abfd);
|
||
if (f == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_system_call);
|
||
return -1;
|
||
}
|
||
result = fstat (fileno (f), statbuf);
|
||
if (result < 0)
|
||
bfd_set_error (bfd_error_system_call);
|
||
return result;
|
||
}
|
||
|
||
/* Returns 0 for success, nonzero for failure (in which case bfd_get_error
|
||
can retrieve the error code). */
|
||
|
||
int
|
||
bfd_seek (abfd, position, direction)
|
||
bfd *abfd;
|
||
file_ptr position;
|
||
int direction;
|
||
{
|
||
int result;
|
||
FILE *f;
|
||
long file_position;
|
||
/* For the time being, a BFD may not seek to it's end. The problem
|
||
is that we don't easily have a way to recognize the end of an
|
||
element in an archive. */
|
||
|
||
BFD_ASSERT (direction == SEEK_SET || direction == SEEK_CUR);
|
||
|
||
if (direction == SEEK_CUR && position == 0)
|
||
return 0;
|
||
|
||
if ((abfd->flags & BFD_IN_MEMORY) != 0)
|
||
{
|
||
struct bfd_in_memory *bim;
|
||
|
||
bim = (struct bfd_in_memory *) abfd->iostream;
|
||
|
||
if (direction == SEEK_SET)
|
||
abfd->where = position;
|
||
else
|
||
abfd->where += position;
|
||
|
||
if (abfd->where > bim->size)
|
||
{
|
||
if ((abfd->direction == write_direction) ||
|
||
(abfd->direction == both_direction))
|
||
{
|
||
bfd_size_type newsize, oldsize;
|
||
oldsize = (bim->size + 127) & ~(bfd_size_type) 127;
|
||
bim->size = abfd->where;
|
||
/* Round up to cut down on memory fragmentation */
|
||
newsize = (bim->size + 127) & ~(bfd_size_type) 127;
|
||
if (newsize > oldsize)
|
||
{
|
||
bim->buffer = bfd_realloc (bim->buffer, newsize);
|
||
if (bim->buffer == 0)
|
||
{
|
||
bim->size = 0;
|
||
return -1;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
abfd->where = bim->size;
|
||
bfd_set_error (bfd_error_file_truncated);
|
||
return -1;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
if (abfd->format != bfd_archive && abfd->my_archive == 0)
|
||
{
|
||
#if 0
|
||
/* Explanation for this code: I'm only about 95+% sure that the above
|
||
conditions are sufficient and that all i/o calls are properly
|
||
adjusting the `where' field. So this is sort of an `assert'
|
||
that the `where' field is correct. If we can go a while without
|
||
tripping the abort, we can probably safely disable this code,
|
||
so that the real optimizations happen. */
|
||
file_ptr where_am_i_now;
|
||
where_am_i_now = ftell (bfd_cache_lookup (abfd));
|
||
if (abfd->my_archive)
|
||
where_am_i_now -= abfd->origin;
|
||
if (where_am_i_now != abfd->where)
|
||
abort ();
|
||
#endif
|
||
if (direction == SEEK_SET && (bfd_vma) position == abfd->where)
|
||
return 0;
|
||
}
|
||
else
|
||
{
|
||
/* We need something smarter to optimize access to archives.
|
||
Currently, anything inside an archive is read via the file
|
||
handle for the archive. Which means that a bfd_seek on one
|
||
component affects the `current position' in the archive, as
|
||
well as in any other component.
|
||
|
||
It might be sufficient to put a spike through the cache
|
||
abstraction, and look to the archive for the file position,
|
||
but I think we should try for something cleaner.
|
||
|
||
In the meantime, no optimization for archives. */
|
||
}
|
||
|
||
f = bfd_cache_lookup (abfd);
|
||
file_position = position;
|
||
if (direction == SEEK_SET && abfd->my_archive != NULL)
|
||
file_position += abfd->origin;
|
||
|
||
result = fseek (f, file_position, direction);
|
||
if (result != 0)
|
||
{
|
||
int hold_errno = errno;
|
||
|
||
/* Force redetermination of `where' field. */
|
||
bfd_tell (abfd);
|
||
|
||
/* An EINVAL error probably means that the file offset was
|
||
absurd. */
|
||
if (hold_errno == EINVAL)
|
||
bfd_set_error (bfd_error_file_truncated);
|
||
else
|
||
{
|
||
bfd_set_error (bfd_error_system_call);
|
||
errno = hold_errno;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Adjust `where' field. */
|
||
if (direction == SEEK_SET)
|
||
abfd->where = position;
|
||
else
|
||
abfd->where += position;
|
||
}
|
||
return result;
|
||
}
|
||
|
||
/** The do-it-yourself (byte) sex-change kit */
|
||
|
||
/* The middle letter e.g. get<b>short indicates Big or Little endian
|
||
target machine. It doesn't matter what the byte order of the host
|
||
machine is; these routines work for either. */
|
||
|
||
/* FIXME: Should these take a count argument?
|
||
Answer (gnu@cygnus.com): No, but perhaps they should be inline
|
||
functions in swap.h #ifdef __GNUC__.
|
||
Gprof them later and find out. */
|
||
|
||
/*
|
||
FUNCTION
|
||
bfd_put_size
|
||
FUNCTION
|
||
bfd_get_size
|
||
|
||
DESCRIPTION
|
||
These macros as used for reading and writing raw data in
|
||
sections; each access (except for bytes) is vectored through
|
||
the target format of the BFD and mangled accordingly. The
|
||
mangling performs any necessary endian translations and
|
||
removes alignment restrictions. Note that types accepted and
|
||
returned by these macros are identical so they can be swapped
|
||
around in macros---for example, @file{libaout.h} defines <<GET_WORD>>
|
||
to either <<bfd_get_32>> or <<bfd_get_64>>.
|
||
|
||
In the put routines, @var{val} must be a <<bfd_vma>>. If we are on a
|
||
system without prototypes, the caller is responsible for making
|
||
sure that is true, with a cast if necessary. We don't cast
|
||
them in the macro definitions because that would prevent <<lint>>
|
||
or <<gcc -Wall>> from detecting sins such as passing a pointer.
|
||
To detect calling these with less than a <<bfd_vma>>, use
|
||
<<gcc -Wconversion>> on a host with 64 bit <<bfd_vma>>'s.
|
||
|
||
.
|
||
.{* Byte swapping macros for user section data. *}
|
||
.
|
||
.#define bfd_put_8(abfd, val, ptr) \
|
||
. ((void) (*((unsigned char *) (ptr)) = (unsigned char) (val)))
|
||
.#define bfd_put_signed_8 \
|
||
. bfd_put_8
|
||
.#define bfd_get_8(abfd, ptr) \
|
||
. (*(unsigned char *) (ptr) & 0xff)
|
||
.#define bfd_get_signed_8(abfd, ptr) \
|
||
. (((*(unsigned char *) (ptr) & 0xff) ^ 0x80) - 0x80)
|
||
.
|
||
.#define bfd_put_16(abfd, val, ptr) \
|
||
. BFD_SEND(abfd, bfd_putx16, ((val),(ptr)))
|
||
.#define bfd_put_signed_16 \
|
||
. bfd_put_16
|
||
.#define bfd_get_16(abfd, ptr) \
|
||
. BFD_SEND(abfd, bfd_getx16, (ptr))
|
||
.#define bfd_get_signed_16(abfd, ptr) \
|
||
. BFD_SEND (abfd, bfd_getx_signed_16, (ptr))
|
||
.
|
||
.#define bfd_put_32(abfd, val, ptr) \
|
||
. BFD_SEND(abfd, bfd_putx32, ((val),(ptr)))
|
||
.#define bfd_put_signed_32 \
|
||
. bfd_put_32
|
||
.#define bfd_get_32(abfd, ptr) \
|
||
. BFD_SEND(abfd, bfd_getx32, (ptr))
|
||
.#define bfd_get_signed_32(abfd, ptr) \
|
||
. BFD_SEND(abfd, bfd_getx_signed_32, (ptr))
|
||
.
|
||
.#define bfd_put_64(abfd, val, ptr) \
|
||
. BFD_SEND(abfd, bfd_putx64, ((val), (ptr)))
|
||
.#define bfd_put_signed_64 \
|
||
. bfd_put_64
|
||
.#define bfd_get_64(abfd, ptr) \
|
||
. BFD_SEND(abfd, bfd_getx64, (ptr))
|
||
.#define bfd_get_signed_64(abfd, ptr) \
|
||
. BFD_SEND(abfd, bfd_getx_signed_64, (ptr))
|
||
.
|
||
.#define bfd_get(bits, abfd, ptr) \
|
||
. ( (bits) == 8 ? (bfd_vma) bfd_get_8 (abfd, ptr) \
|
||
. : (bits) == 16 ? bfd_get_16 (abfd, ptr) \
|
||
. : (bits) == 32 ? bfd_get_32 (abfd, ptr) \
|
||
. : (bits) == 64 ? bfd_get_64 (abfd, ptr) \
|
||
. : (abort (), (bfd_vma) - 1))
|
||
.
|
||
.#define bfd_put(bits, abfd, val, ptr) \
|
||
. ( (bits) == 8 ? bfd_put_8 (abfd, val, ptr) \
|
||
. : (bits) == 16 ? bfd_put_16 (abfd, val, ptr) \
|
||
. : (bits) == 32 ? bfd_put_32 (abfd, val, ptr) \
|
||
. : (bits) == 64 ? bfd_put_64 (abfd, val, ptr) \
|
||
. : (abort (), (void) 0))
|
||
.
|
||
*/
|
||
|
||
/*
|
||
FUNCTION
|
||
bfd_h_put_size
|
||
bfd_h_get_size
|
||
|
||
DESCRIPTION
|
||
These macros have the same function as their <<bfd_get_x>>
|
||
brethren, except that they are used for removing information
|
||
for the header records of object files. Believe it or not,
|
||
some object files keep their header records in big endian
|
||
order and their data in little endian order.
|
||
.
|
||
.{* Byte swapping macros for file header data. *}
|
||
.
|
||
.#define bfd_h_put_8(abfd, val, ptr) \
|
||
. bfd_put_8 (abfd, val, ptr)
|
||
.#define bfd_h_put_signed_8(abfd, val, ptr) \
|
||
. bfd_put_8 (abfd, val, ptr)
|
||
.#define bfd_h_get_8(abfd, ptr) \
|
||
. bfd_get_8 (abfd, ptr)
|
||
.#define bfd_h_get_signed_8(abfd, ptr) \
|
||
. bfd_get_signed_8 (abfd, ptr)
|
||
.
|
||
.#define bfd_h_put_16(abfd, val, ptr) \
|
||
. BFD_SEND (abfd, bfd_h_putx16, (val, ptr))
|
||
.#define bfd_h_put_signed_16 \
|
||
. bfd_h_put_16
|
||
.#define bfd_h_get_16(abfd, ptr) \
|
||
. BFD_SEND (abfd, bfd_h_getx16, (ptr))
|
||
.#define bfd_h_get_signed_16(abfd, ptr) \
|
||
. BFD_SEND (abfd, bfd_h_getx_signed_16, (ptr))
|
||
.
|
||
.#define bfd_h_put_32(abfd, val, ptr) \
|
||
. BFD_SEND (abfd, bfd_h_putx32, (val, ptr))
|
||
.#define bfd_h_put_signed_32 \
|
||
. bfd_h_put_32
|
||
.#define bfd_h_get_32(abfd, ptr) \
|
||
. BFD_SEND (abfd, bfd_h_getx32, (ptr))
|
||
.#define bfd_h_get_signed_32(abfd, ptr) \
|
||
. BFD_SEND (abfd, bfd_h_getx_signed_32, (ptr))
|
||
.
|
||
.#define bfd_h_put_64(abfd, val, ptr) \
|
||
. BFD_SEND (abfd, bfd_h_putx64, (val, ptr))
|
||
.#define bfd_h_put_signed_64 \
|
||
. bfd_h_put_64
|
||
.#define bfd_h_get_64(abfd, ptr) \
|
||
. BFD_SEND (abfd, bfd_h_getx64, (ptr))
|
||
.#define bfd_h_get_signed_64(abfd, ptr) \
|
||
. BFD_SEND (abfd, bfd_h_getx_signed_64, (ptr))
|
||
.
|
||
.{* Refinements on the above, which should eventually go away. Save
|
||
. cluttering the source with (bfd_vma) and (bfd_byte *) casts. *}
|
||
.
|
||
.#define H_PUT_64(abfd, val, where) \
|
||
. bfd_h_put_64 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
|
||
.
|
||
.#define H_PUT_32(abfd, val, where) \
|
||
. bfd_h_put_32 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
|
||
.
|
||
.#define H_PUT_16(abfd, val, where) \
|
||
. bfd_h_put_16 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
|
||
.
|
||
.#define H_PUT_8 bfd_h_put_8
|
||
.
|
||
.#define H_PUT_S64(abfd, val, where) \
|
||
. bfd_h_put_signed_64 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
|
||
.
|
||
.#define H_PUT_S32(abfd, val, where) \
|
||
. bfd_h_put_signed_32 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
|
||
.
|
||
.#define H_PUT_S16(abfd, val, where) \
|
||
. bfd_h_put_signed_16 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
|
||
.
|
||
.#define H_PUT_S8 bfd_h_put_signed_8
|
||
.
|
||
.#define H_GET_64(abfd, where) \
|
||
. bfd_h_get_64 ((abfd), (bfd_byte *) (where))
|
||
.
|
||
.#define H_GET_32(abfd, where) \
|
||
. bfd_h_get_32 ((abfd), (bfd_byte *) (where))
|
||
.
|
||
.#define H_GET_16(abfd, where) \
|
||
. bfd_h_get_16 ((abfd), (bfd_byte *) (where))
|
||
.
|
||
.#define H_GET_8 bfd_h_get_8
|
||
.
|
||
.#define H_GET_S64(abfd, where) \
|
||
. bfd_h_get_signed_64 ((abfd), (bfd_byte *) (where))
|
||
.
|
||
.#define H_GET_S32(abfd, where) \
|
||
. bfd_h_get_signed_32 ((abfd), (bfd_byte *) (where))
|
||
.
|
||
.#define H_GET_S16(abfd, where) \
|
||
. bfd_h_get_signed_16 ((abfd), (bfd_byte *) (where))
|
||
.
|
||
.#define H_GET_S8 bfd_h_get_signed_8
|
||
.
|
||
.*/
|
||
|
||
/* Sign extension to bfd_signed_vma. */
|
||
#define COERCE16(x) (((bfd_signed_vma) (x) ^ 0x8000) - 0x8000)
|
||
#define COERCE32(x) \
|
||
((bfd_signed_vma) (long) (((unsigned long) (x) ^ 0x80000000) - 0x80000000))
|
||
#define EIGHT_GAZILLION (((BFD_HOST_64_BIT)0x80000000) << 32)
|
||
#define COERCE64(x) \
|
||
(((bfd_signed_vma) (x) ^ EIGHT_GAZILLION) - EIGHT_GAZILLION)
|
||
|
||
bfd_vma
|
||
bfd_getb16 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
return (addr[0] << 8) | addr[1];
|
||
}
|
||
|
||
bfd_vma
|
||
bfd_getl16 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
return (addr[1] << 8) | addr[0];
|
||
}
|
||
|
||
bfd_signed_vma
|
||
bfd_getb_signed_16 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
return COERCE16((addr[0] << 8) | addr[1]);
|
||
}
|
||
|
||
bfd_signed_vma
|
||
bfd_getl_signed_16 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
return COERCE16((addr[1] << 8) | addr[0]);
|
||
}
|
||
|
||
void
|
||
bfd_putb16 (data, addr)
|
||
bfd_vma data;
|
||
register bfd_byte *addr;
|
||
{
|
||
addr[0] = (bfd_byte) (data >> 8);
|
||
addr[1] = (bfd_byte) data;
|
||
}
|
||
|
||
void
|
||
bfd_putl16 (data, addr)
|
||
bfd_vma data;
|
||
register bfd_byte *addr;
|
||
{
|
||
addr[0] = (bfd_byte) data;
|
||
addr[1] = (bfd_byte) (data >> 8);
|
||
}
|
||
|
||
bfd_vma
|
||
bfd_getb32 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
unsigned long v;
|
||
|
||
v = (unsigned long) addr[0] << 24;
|
||
v |= (unsigned long) addr[1] << 16;
|
||
v |= (unsigned long) addr[2] << 8;
|
||
v |= (unsigned long) addr[3];
|
||
return (bfd_vma) v;
|
||
}
|
||
|
||
bfd_vma
|
||
bfd_getl32 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
unsigned long v;
|
||
|
||
v = (unsigned long) addr[0];
|
||
v |= (unsigned long) addr[1] << 8;
|
||
v |= (unsigned long) addr[2] << 16;
|
||
v |= (unsigned long) addr[3] << 24;
|
||
return (bfd_vma) v;
|
||
}
|
||
|
||
bfd_signed_vma
|
||
bfd_getb_signed_32 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
unsigned long v;
|
||
|
||
v = (unsigned long) addr[0] << 24;
|
||
v |= (unsigned long) addr[1] << 16;
|
||
v |= (unsigned long) addr[2] << 8;
|
||
v |= (unsigned long) addr[3];
|
||
return COERCE32 (v);
|
||
}
|
||
|
||
bfd_signed_vma
|
||
bfd_getl_signed_32 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
unsigned long v;
|
||
|
||
v = (unsigned long) addr[0];
|
||
v |= (unsigned long) addr[1] << 8;
|
||
v |= (unsigned long) addr[2] << 16;
|
||
v |= (unsigned long) addr[3] << 24;
|
||
return COERCE32 (v);
|
||
}
|
||
|
||
bfd_vma
|
||
bfd_getb64 (addr)
|
||
register const bfd_byte *addr ATTRIBUTE_UNUSED;
|
||
{
|
||
#ifdef BFD64
|
||
bfd_vma low, high;
|
||
|
||
high= ((((((((addr[0]) << 8) |
|
||
addr[1]) << 8) |
|
||
addr[2]) << 8) |
|
||
addr[3]) );
|
||
|
||
low = (((((((((bfd_vma)addr[4]) << 8) |
|
||
addr[5]) << 8) |
|
||
addr[6]) << 8) |
|
||
addr[7]));
|
||
|
||
return high << 32 | low;
|
||
#else
|
||
BFD_FAIL();
|
||
return 0;
|
||
#endif
|
||
}
|
||
|
||
bfd_vma
|
||
bfd_getl64 (addr)
|
||
register const bfd_byte *addr ATTRIBUTE_UNUSED;
|
||
{
|
||
#ifdef BFD64
|
||
bfd_vma low, high;
|
||
high= (((((((addr[7] << 8) |
|
||
addr[6]) << 8) |
|
||
addr[5]) << 8) |
|
||
addr[4]));
|
||
|
||
low = ((((((((bfd_vma)addr[3] << 8) |
|
||
addr[2]) << 8) |
|
||
addr[1]) << 8) |
|
||
addr[0]) );
|
||
|
||
return high << 32 | low;
|
||
#else
|
||
BFD_FAIL();
|
||
return 0;
|
||
#endif
|
||
|
||
}
|
||
|
||
bfd_signed_vma
|
||
bfd_getb_signed_64 (addr)
|
||
register const bfd_byte *addr ATTRIBUTE_UNUSED;
|
||
{
|
||
#ifdef BFD64
|
||
bfd_vma low, high;
|
||
|
||
high= ((((((((addr[0]) << 8) |
|
||
addr[1]) << 8) |
|
||
addr[2]) << 8) |
|
||
addr[3]) );
|
||
|
||
low = (((((((((bfd_vma)addr[4]) << 8) |
|
||
addr[5]) << 8) |
|
||
addr[6]) << 8) |
|
||
addr[7]));
|
||
|
||
return COERCE64(high << 32 | low);
|
||
#else
|
||
BFD_FAIL();
|
||
return 0;
|
||
#endif
|
||
}
|
||
|
||
bfd_signed_vma
|
||
bfd_getl_signed_64 (addr)
|
||
register const bfd_byte *addr ATTRIBUTE_UNUSED;
|
||
{
|
||
#ifdef BFD64
|
||
bfd_vma low, high;
|
||
high= (((((((addr[7] << 8) |
|
||
addr[6]) << 8) |
|
||
addr[5]) << 8) |
|
||
addr[4]));
|
||
|
||
low = ((((((((bfd_vma)addr[3] << 8) |
|
||
addr[2]) << 8) |
|
||
addr[1]) << 8) |
|
||
addr[0]) );
|
||
|
||
return COERCE64(high << 32 | low);
|
||
#else
|
||
BFD_FAIL();
|
||
return 0;
|
||
#endif
|
||
}
|
||
|
||
void
|
||
bfd_putb32 (data, addr)
|
||
bfd_vma data;
|
||
register bfd_byte *addr;
|
||
{
|
||
addr[0] = (bfd_byte) (data >> 24);
|
||
addr[1] = (bfd_byte) (data >> 16);
|
||
addr[2] = (bfd_byte) (data >> 8);
|
||
addr[3] = (bfd_byte) data;
|
||
}
|
||
|
||
void
|
||
bfd_putl32 (data, addr)
|
||
bfd_vma data;
|
||
register bfd_byte *addr;
|
||
{
|
||
addr[0] = (bfd_byte) data;
|
||
addr[1] = (bfd_byte) (data >> 8);
|
||
addr[2] = (bfd_byte) (data >> 16);
|
||
addr[3] = (bfd_byte) (data >> 24);
|
||
}
|
||
|
||
void
|
||
bfd_putb64 (data, addr)
|
||
bfd_vma data ATTRIBUTE_UNUSED;
|
||
register bfd_byte *addr ATTRIBUTE_UNUSED;
|
||
{
|
||
#ifdef BFD64
|
||
addr[0] = (bfd_byte) (data >> (7*8));
|
||
addr[1] = (bfd_byte) (data >> (6*8));
|
||
addr[2] = (bfd_byte) (data >> (5*8));
|
||
addr[3] = (bfd_byte) (data >> (4*8));
|
||
addr[4] = (bfd_byte) (data >> (3*8));
|
||
addr[5] = (bfd_byte) (data >> (2*8));
|
||
addr[6] = (bfd_byte) (data >> (1*8));
|
||
addr[7] = (bfd_byte) (data >> (0*8));
|
||
#else
|
||
BFD_FAIL();
|
||
#endif
|
||
}
|
||
|
||
void
|
||
bfd_putl64 (data, addr)
|
||
bfd_vma data ATTRIBUTE_UNUSED;
|
||
register bfd_byte *addr ATTRIBUTE_UNUSED;
|
||
{
|
||
#ifdef BFD64
|
||
addr[7] = (bfd_byte) (data >> (7*8));
|
||
addr[6] = (bfd_byte) (data >> (6*8));
|
||
addr[5] = (bfd_byte) (data >> (5*8));
|
||
addr[4] = (bfd_byte) (data >> (4*8));
|
||
addr[3] = (bfd_byte) (data >> (3*8));
|
||
addr[2] = (bfd_byte) (data >> (2*8));
|
||
addr[1] = (bfd_byte) (data >> (1*8));
|
||
addr[0] = (bfd_byte) (data >> (0*8));
|
||
#else
|
||
BFD_FAIL();
|
||
#endif
|
||
}
|
||
|
||
void
|
||
bfd_put_bits (data, addr, bits, big_p)
|
||
bfd_vma data;
|
||
bfd_byte *addr;
|
||
int bits;
|
||
boolean big_p;
|
||
{
|
||
int i;
|
||
int bytes;
|
||
|
||
if (bits % 8 != 0)
|
||
abort ();
|
||
|
||
bytes = bits / 8;
|
||
for (i = 0; i < bytes; i++)
|
||
{
|
||
int index = big_p ? bytes - i - 1 : i;
|
||
|
||
addr[index] = (bfd_byte) data;
|
||
data >>= 8;
|
||
}
|
||
}
|
||
|
||
bfd_vma
|
||
bfd_get_bits (addr, bits, big_p)
|
||
bfd_byte *addr;
|
||
int bits;
|
||
boolean big_p;
|
||
{
|
||
bfd_vma data;
|
||
int i;
|
||
int bytes;
|
||
|
||
if (bits % 8 != 0)
|
||
abort ();
|
||
|
||
data = 0;
|
||
bytes = bits / 8;
|
||
for (i = 0; i < bytes; i++)
|
||
{
|
||
int index = big_p ? i : bytes - i - 1;
|
||
|
||
data = (data << 8) | addr[index];
|
||
}
|
||
|
||
return data;
|
||
}
|
||
|
||
/* Default implementation */
|
||
|
||
boolean
|
||
_bfd_generic_get_section_contents (abfd, section, location, offset, count)
|
||
bfd *abfd;
|
||
sec_ptr section;
|
||
PTR location;
|
||
file_ptr offset;
|
||
bfd_size_type count;
|
||
{
|
||
if (count == 0)
|
||
return true;
|
||
|
||
if (offset + count > section->_raw_size)
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return false;
|
||
}
|
||
|
||
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
|
||
|| bfd_bread (location, count, abfd) != count)
|
||
return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
boolean
|
||
_bfd_generic_get_section_contents_in_window (abfd, section, w, offset, count)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
sec_ptr section ATTRIBUTE_UNUSED;
|
||
bfd_window *w ATTRIBUTE_UNUSED;
|
||
file_ptr offset ATTRIBUTE_UNUSED;
|
||
bfd_size_type count ATTRIBUTE_UNUSED;
|
||
{
|
||
#ifdef USE_MMAP
|
||
if (count == 0)
|
||
return true;
|
||
if (abfd->xvec->_bfd_get_section_contents != _bfd_generic_get_section_contents)
|
||
{
|
||
/* We don't know what changes the bfd's get_section_contents
|
||
method may have to make. So punt trying to map the file
|
||
window, and let get_section_contents do its thing. */
|
||
/* @@ FIXME : If the internal window has a refcount of 1 and was
|
||
allocated with malloc instead of mmap, just reuse it. */
|
||
bfd_free_window (w);
|
||
w->i = ((bfd_window_internal *)
|
||
bfd_zmalloc ((bfd_size_type) sizeof (bfd_window_internal)));
|
||
if (w->i == NULL)
|
||
return false;
|
||
w->i->data = (PTR) bfd_malloc (count);
|
||
if (w->i->data == NULL)
|
||
{
|
||
free (w->i);
|
||
w->i = NULL;
|
||
return false;
|
||
}
|
||
w->i->mapped = 0;
|
||
w->i->refcount = 1;
|
||
w->size = w->i->size = count;
|
||
w->data = w->i->data;
|
||
return bfd_get_section_contents (abfd, section, w->data, offset, count);
|
||
}
|
||
if (offset + count > section->_raw_size
|
||
|| (bfd_get_file_window (abfd, section->filepos + offset, count, w, true)
|
||
== false))
|
||
return false;
|
||
return true;
|
||
#else
|
||
abort ();
|
||
#endif
|
||
}
|
||
|
||
/* This generic function can only be used in implementations where creating
|
||
NEW sections is disallowed. It is useful in patching existing sections
|
||
in read-write files, though. See other set_section_contents functions
|
||
to see why it doesn't work for new sections. */
|
||
boolean
|
||
_bfd_generic_set_section_contents (abfd, section, location, offset, count)
|
||
bfd *abfd;
|
||
sec_ptr section;
|
||
PTR location;
|
||
file_ptr offset;
|
||
bfd_size_type count;
|
||
{
|
||
if (count == 0)
|
||
return true;
|
||
|
||
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
|
||
|| bfd_bwrite (location, count, abfd) != count)
|
||
return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
/*
|
||
INTERNAL_FUNCTION
|
||
bfd_log2
|
||
|
||
SYNOPSIS
|
||
unsigned int bfd_log2 (bfd_vma x);
|
||
|
||
DESCRIPTION
|
||
Return the log base 2 of the value supplied, rounded up. E.g., an
|
||
@var{x} of 1025 returns 11. A @var{x} of 0 returns 0.
|
||
*/
|
||
|
||
unsigned int
|
||
bfd_log2 (x)
|
||
bfd_vma x;
|
||
{
|
||
unsigned int result = 0;
|
||
|
||
while ((x = (x >> 1)) != 0)
|
||
++result;
|
||
return result;
|
||
}
|
||
|
||
boolean
|
||
bfd_generic_is_local_label_name (abfd, name)
|
||
bfd *abfd;
|
||
const char *name;
|
||
{
|
||
char locals_prefix = (bfd_get_symbol_leading_char (abfd) == '_') ? 'L' : '.';
|
||
|
||
return (name[0] == locals_prefix);
|
||
}
|
||
|
||
/* Can be used from / for bfd_merge_private_bfd_data to check that
|
||
endianness matches between input and output file. Returns
|
||
true for a match, otherwise returns false and emits an error. */
|
||
boolean
|
||
_bfd_generic_verify_endian_match (ibfd, obfd)
|
||
bfd *ibfd;
|
||
bfd *obfd;
|
||
{
|
||
if (ibfd->xvec->byteorder != obfd->xvec->byteorder
|
||
&& ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
|
||
&& obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
|
||
{
|
||
const char *msg;
|
||
|
||
if (bfd_big_endian (ibfd))
|
||
msg = _("%s: compiled for a big endian system and target is little endian");
|
||
else
|
||
msg = _("%s: compiled for a little endian system and target is big endian");
|
||
|
||
(*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
|
||
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Give a warning at runtime if someone compiles code which calls
|
||
old routines. */
|
||
|
||
void
|
||
warn_deprecated (what, file, line, func)
|
||
const char *what;
|
||
const char *file;
|
||
int line;
|
||
const char *func;
|
||
{
|
||
/* Poor man's tracking of functions we've already warned about. */
|
||
static size_t mask = 0;
|
||
|
||
if (~(size_t) func & ~mask)
|
||
{
|
||
/* Note: seperate sentances in order to allow
|
||
for translation into other languages. */
|
||
if (func)
|
||
fprintf (stderr, _("Deprecated %s called at %s line %d in %s\n"),
|
||
what, file, line, func);
|
||
else
|
||
fprintf (stderr, _("Deprecated %s called\n"), what);
|
||
mask |= ~(size_t) func;
|
||
}
|
||
}
|