4fe6d901bd
Added some new interfaces, and a new entry in the target vector. Under the new interfaces, mmap will be used if available, otherwise malloc/seek/read, as before. Old interfaces all still intact. Most configurations (including all used by "--enable-targets=all") simply changed to call the default routine for that entry in the target vector. I might've missed some targets only included in special configurations. Support for a.out symbol and string table reading now goes through new interfaces, and will use mmap when available. Linker hooks (e.g., avoiding reallocation under malloc) not ready yet.
1097 lines
26 KiB
C
1097 lines
26 KiB
C
/* Assorted BFD support routines, only used internally.
|
||
Copyright 1990, 91, 92, 93, 94 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"
|
||
|
||
static int 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. */
|
||
|
||
/*ARGSUSED*/
|
||
boolean
|
||
bfd_false (ignore)
|
||
bfd *ignore;
|
||
{
|
||
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. */
|
||
|
||
/*ARGSUSED*/
|
||
boolean
|
||
bfd_true (ignore)
|
||
bfd *ignore;
|
||
{
|
||
return true;
|
||
}
|
||
|
||
/* A routine which is used in target vectors for unsupported
|
||
operations which return a pointer value. */
|
||
|
||
/*ARGSUSED*/
|
||
PTR
|
||
bfd_nullvoidptr (ignore)
|
||
bfd *ignore;
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return NULL;
|
||
}
|
||
|
||
/*ARGSUSED*/
|
||
int
|
||
bfd_0 (ignore)
|
||
bfd *ignore;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/*ARGSUSED*/
|
||
unsigned int
|
||
bfd_0u (ignore)
|
||
bfd *ignore;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/*ARGUSED*/
|
||
long
|
||
bfd_0l (ignore)
|
||
bfd *ignore;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/* A routine which is used in target vectors for unsupported
|
||
operations which return -1 on error. */
|
||
|
||
/*ARGSUSED*/
|
||
long
|
||
_bfd_n1 (ignore_abfd)
|
||
bfd *ignore_abfd;
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return -1;
|
||
}
|
||
|
||
/*ARGSUSED*/
|
||
void
|
||
bfd_void (ignore)
|
||
bfd *ignore;
|
||
{
|
||
}
|
||
|
||
/*ARGSUSED*/
|
||
boolean
|
||
_bfd_nocore_core_file_matches_executable_p (ignore_core_bfd, ignore_exec_bfd)
|
||
bfd *ignore_core_bfd;
|
||
bfd *ignore_exec_bfd;
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return false;
|
||
}
|
||
|
||
/* Routine to handle core_file_failing_command entry point for targets
|
||
without core file support. */
|
||
|
||
/*ARGSUSED*/
|
||
char *
|
||
_bfd_nocore_core_file_failing_command (ignore_abfd)
|
||
bfd *ignore_abfd;
|
||
{
|
||
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. */
|
||
|
||
/*ARGSUSED*/
|
||
int
|
||
_bfd_nocore_core_file_failing_signal (ignore_abfd)
|
||
bfd *ignore_abfd;
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return 0;
|
||
}
|
||
|
||
/*ARGSUSED*/
|
||
const bfd_target *
|
||
_bfd_dummy_target (ignore_abfd)
|
||
bfd *ignore_abfd;
|
||
{
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return 0;
|
||
}
|
||
|
||
|
||
#ifndef bfd_zmalloc
|
||
/* allocate and clear storage */
|
||
|
||
char *
|
||
bfd_zmalloc (size)
|
||
bfd_size_type size;
|
||
{
|
||
char *ptr = (char *) malloc ((size_t) size);
|
||
|
||
if (ptr && size)
|
||
memset(ptr, 0, (size_t) size);
|
||
|
||
return ptr;
|
||
}
|
||
#endif /* bfd_zmalloc */
|
||
|
||
/* 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 int
|
||
real_read (where, a,b, file)
|
||
PTR where;
|
||
size_t a;
|
||
size_t b;
|
||
FILE *file;
|
||
{
|
||
return fread (where, a, b, file);
|
||
}
|
||
|
||
/* Return value is amount read (FIXME: how are errors and end of file dealt
|
||
with? We never call bfd_set_error, which is probably a mistake). */
|
||
|
||
bfd_size_type
|
||
bfd_read (ptr, size, nitems, abfd)
|
||
PTR ptr;
|
||
bfd_size_type size;
|
||
bfd_size_type nitems;
|
||
bfd *abfd;
|
||
{
|
||
int nread;
|
||
nread = real_read (ptr, 1, (size_t)(size*nitems), bfd_cache_lookup(abfd));
|
||
#ifdef FILE_OFFSET_IS_CHAR_INDEX
|
||
if (nread > 0)
|
||
abfd->where += nread;
|
||
#endif
|
||
|
||
/* 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 < (int)(size * nitems))
|
||
{
|
||
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;
|
||
}
|
||
|
||
#undef HAVE_MPROTECT /* code's not tested yet */
|
||
|
||
#if HAVE_MMAP || HAVE_MPROTECT
|
||
#include <sys/types.h>
|
||
#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;
|
||
|
||
int
|
||
bfd_get_file_window (abfd, offset, size, windowp, writable)
|
||
bfd *abfd;
|
||
file_ptr offset;
|
||
bfd_size_type size;
|
||
bfd_window *windowp;
|
||
int writable;
|
||
{
|
||
static size_t pagesize;
|
||
bfd_window_internal *i = windowp->i;
|
||
size_t 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, 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)
|
||
{
|
||
windowp->i = i = (bfd_window_internal *) bfd_zmalloc (sizeof (bfd_window_internal));
|
||
if (i == 0)
|
||
return false;
|
||
i->data = 0;
|
||
}
|
||
#ifdef HAVE_MMAP
|
||
if (ok_to_map && (i->data == 0 || i->mapped == 1))
|
||
{
|
||
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,
|
||
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 = i->data + offset2;
|
||
windowp->size = size;
|
||
i->mapped = 1;
|
||
return true;
|
||
}
|
||
else if (debug_windows)
|
||
{
|
||
if (ok_to_map)
|
||
fprintf (stderr, "not mapping: data=%x mapped=%d\n",
|
||
i->data, 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);
|
||
if (i->data)
|
||
i->data = realloc (i->data, size_to_alloc);
|
||
else
|
||
i->data = malloc (size_to_alloc);
|
||
if (debug_windows)
|
||
fprintf (stderr, "\t-> %p\n", i->data);
|
||
i->refcount = 1;
|
||
if (i->data == 0)
|
||
return size_to_alloc == 0;
|
||
if (bfd_seek (abfd, offset, SEEK_SET) != 0)
|
||
return false;
|
||
i->size = bfd_read (i->data, size, 1, 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;
|
||
}
|
||
|
||
bfd_size_type
|
||
bfd_write (ptr, size, nitems, abfd)
|
||
CONST PTR ptr;
|
||
bfd_size_type size;
|
||
bfd_size_type nitems;
|
||
bfd *abfd;
|
||
{
|
||
long nwrote = fwrite (ptr, 1, (size_t) (size * nitems),
|
||
bfd_cache_lookup (abfd));
|
||
#ifdef FILE_OFFSET_IS_CHAR_INDEX
|
||
if (nwrote > 0)
|
||
abfd->where += nwrote;
|
||
#endif
|
||
if ((bfd_size_type) nwrote != size * nitems)
|
||
{
|
||
#ifdef ENOSPC
|
||
if (nwrote >= 0)
|
||
errno = ENOSPC;
|
||
#endif
|
||
bfd_set_error (bfd_error_system_call);
|
||
}
|
||
return nwrote;
|
||
}
|
||
|
||
/*
|
||
INTERNAL_FUNCTION
|
||
bfd_write_bigendian_4byte_int
|
||
|
||
SYNOPSIS
|
||
void bfd_write_bigendian_4byte_int(bfd *abfd, int i);
|
||
|
||
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.
|
||
|
||
*/
|
||
void
|
||
bfd_write_bigendian_4byte_int (abfd, i)
|
||
bfd *abfd;
|
||
int i;
|
||
{
|
||
bfd_byte buffer[4];
|
||
bfd_putb32(i, buffer);
|
||
if (bfd_write((PTR)buffer, 4, 1, abfd) != 4)
|
||
abort ();
|
||
}
|
||
|
||
long
|
||
bfd_tell (abfd)
|
||
bfd *abfd;
|
||
{
|
||
file_ptr ptr;
|
||
|
||
ptr = ftell (bfd_cache_lookup(abfd));
|
||
|
||
if (abfd->my_archive)
|
||
ptr -= abfd->origin;
|
||
abfd->where = ptr;
|
||
return ptr;
|
||
}
|
||
|
||
int
|
||
bfd_flush (abfd)
|
||
bfd *abfd;
|
||
{
|
||
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;
|
||
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;
|
||
file_ptr 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;
|
||
#ifdef FILE_OFFSET_IS_CHAR_INDEX
|
||
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 && 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. */
|
||
}
|
||
#endif
|
||
|
||
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)
|
||
{
|
||
/* Force redetermination of `where' field. */
|
||
bfd_tell (abfd);
|
||
bfd_set_error (bfd_error_system_call);
|
||
}
|
||
else
|
||
{
|
||
#ifdef FILE_OFFSET_IS_CHAR_INDEX
|
||
/* Adjust `where' field. */
|
||
if (direction == SEEK_SET)
|
||
abfd->where = position;
|
||
else
|
||
abfd->where += position;
|
||
#endif
|
||
}
|
||
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) \
|
||
. (*((unsigned char *)(ptr)) = (unsigned char)(val))
|
||
.#define bfd_put_signed_8 \
|
||
. bfd_put_8
|
||
.#define bfd_get_8(abfd, ptr) \
|
||
. (*(unsigned char *)(ptr))
|
||
.#define bfd_get_signed_8(abfd, ptr) \
|
||
. ((*(unsigned char *)(ptr) ^ 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))
|
||
.
|
||
*/
|
||
|
||
/*
|
||
FUNCTION
|
||
bfd_h_put_size
|
||
bfd_h_get_size
|
||
|
||
DESCRIPTION
|
||
These macros have the same function as their <<bfd_get_x>>
|
||
bretheren, 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))
|
||
.
|
||
*/
|
||
|
||
/* Sign extension to bfd_signed_vma. */
|
||
#define COERCE16(x) (((bfd_signed_vma) (x) ^ 0x8000) - 0x8000)
|
||
#define COERCE32(x) (((bfd_signed_vma) (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;
|
||
{
|
||
return (((((bfd_vma)addr[0] << 8) | addr[1]) << 8)
|
||
| addr[2]) << 8 | addr[3];
|
||
}
|
||
|
||
bfd_vma
|
||
bfd_getl32 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
return (((((bfd_vma)addr[3] << 8) | addr[2]) << 8)
|
||
| addr[1]) << 8 | addr[0];
|
||
}
|
||
|
||
bfd_signed_vma
|
||
bfd_getb_signed_32 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
return COERCE32((((((bfd_vma)addr[0] << 8) | addr[1]) << 8)
|
||
| addr[2]) << 8 | addr[3]);
|
||
}
|
||
|
||
bfd_signed_vma
|
||
bfd_getl_signed_32 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
return COERCE32((((((bfd_vma)addr[3] << 8) | addr[2]) << 8)
|
||
| addr[1]) << 8 | addr[0]);
|
||
}
|
||
|
||
bfd_vma
|
||
bfd_getb64 (addr)
|
||
register const bfd_byte *addr;
|
||
{
|
||
#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;
|
||
{
|
||
#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;
|
||
{
|
||
#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;
|
||
{
|
||
#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;
|
||
register bfd_byte *addr;
|
||
{
|
||
#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;
|
||
register bfd_byte *addr;
|
||
{
|
||
#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
|
||
}
|
||
|
||
/* 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 ((bfd_size_type)(offset+count) > section->_raw_size
|
||
|| bfd_seek(abfd, (file_ptr)(section->filepos + offset), SEEK_SET) == -1
|
||
|| bfd_read(location, (bfd_size_type)1, count, abfd) != count)
|
||
return (false); /* on error */
|
||
return (true);
|
||
}
|
||
|
||
boolean
|
||
_bfd_generic_get_section_contents_in_window (abfd, section, w, offset, count)
|
||
bfd *abfd;
|
||
sec_ptr section;
|
||
bfd_window *w;
|
||
file_ptr offset;
|
||
bfd_size_type count;
|
||
{
|
||
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 (sizeof (bfd_window_internal));
|
||
if (w->i == NULL)
|
||
return false;
|
||
w->i->data = (PTR) malloc ((size_t) 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 ((bfd_size_type) (offset+count) > section->_raw_size
|
||
|| (bfd_get_file_window (abfd, section->filepos + offset, count, w, 1)
|
||
== false))
|
||
return false;
|
||
return true;
|
||
}
|
||
|
||
/* 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, (file_ptr) (section->filepos + offset), SEEK_SET) == -1
|
||
|| bfd_write (location, (bfd_size_type) 1, 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.
|
||
*/
|
||
|
||
unsigned
|
||
bfd_log2(x)
|
||
bfd_vma x;
|
||
{
|
||
unsigned result = 0;
|
||
while ( (bfd_vma)(1<< result) < x)
|
||
result++;
|
||
return result;
|
||
}
|
||
|
||
boolean
|
||
bfd_generic_is_local_label (abfd, sym)
|
||
bfd *abfd;
|
||
asymbol *sym;
|
||
{
|
||
char locals_prefix = (bfd_get_symbol_leading_char (abfd) == '_') ? 'L' : '.';
|
||
|
||
return (sym->name[0] == locals_prefix);
|
||
}
|
||
|