/* Assorted BFD support routines, only used internally.
- Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 98, 1999
+ Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+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 int real_read PARAMS ((PTR, size_t, size_t, FILE *));
+
/*
SECTION
- libbfd
+ Internal functions
DESCRIPTION
- This file contains various routines which are used within BFD.
+ These routines are used within BFD.
They are not intended for export, but are documented here for
completeness.
*/
-boolean
-DEFUN(_bfd_dummy_new_section_hook,(ignore, ignore_newsect),
- bfd *ignore AND
- asection *ignore_newsect)
-{
- return true;
-}
+/* A routine which is used in target vectors for unsupported
+ operations. */
+/*ARGSUSED*/
boolean
-DEFUN(bfd_false ,(ignore),
- bfd *ignore)
+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. */
+
+/*ARGSUSED*/
boolean
-DEFUN(bfd_true,(ignore),
- bfd *ignore)
+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. */
+
+/*ARGSUSED*/
PTR
-DEFUN(bfd_nullvoidptr,(ignore),
- bfd *ignore)
+bfd_nullvoidptr (ignore)
+ bfd *ignore ATTRIBUTE_UNUSED;
{
- return (PTR)NULL;
+ bfd_set_error (bfd_error_invalid_operation);
+ return NULL;
}
+/*ARGSUSED*/
int
-DEFUN(bfd_0,(ignore),
- bfd *ignore)
+bfd_0 (ignore)
+ bfd *ignore ATTRIBUTE_UNUSED;
{
return 0;
}
+/*ARGSUSED*/
unsigned int
-DEFUN(bfd_0u,(ignore),
- bfd *ignore)
+bfd_0u (ignore)
+ bfd *ignore ATTRIBUTE_UNUSED;
{
return 0;
}
+/*ARGUSED*/
+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. */
+
+/*ARGSUSED*/
+long
+_bfd_n1 (ignore_abfd)
+ bfd *ignore_abfd ATTRIBUTE_UNUSED;
+{
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+}
+
+/*ARGSUSED*/
void
-DEFUN(bfd_void,(ignore),
- bfd *ignore)
+bfd_void (ignore)
+ bfd *ignore ATTRIBUTE_UNUSED;
{
}
+/*ARGSUSED*/
boolean
-DEFUN(_bfd_dummy_core_file_matches_executable_p,(ignore_core_bfd, ignore_exec_bfd),
- bfd *ignore_core_bfd AND
- bfd *ignore_exec_bfd)
+_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_error = invalid_operation;
+ bfd_set_error (bfd_error_invalid_operation);
return false;
}
-/* of course you can't initialize a function to be the same as another, grr */
+/* Routine to handle core_file_failing_command entry point for targets
+ without core file support. */
+/*ARGSUSED*/
char *
-DEFUN(_bfd_dummy_core_file_failing_command,(ignore_abfd),
- bfd *ignore_abfd)
+_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. */
+
+/*ARGSUSED*/
int
-DEFUN(_bfd_dummy_core_file_failing_signal,(ignore_abfd),
- bfd *ignore_abfd)
+_bfd_nocore_core_file_failing_signal (ignore_abfd)
+ bfd *ignore_abfd ATTRIBUTE_UNUSED;
{
+ bfd_set_error (bfd_error_invalid_operation);
return 0;
}
-bfd_target *
-DEFUN(_bfd_dummy_target,(ignore_abfd),
- bfd *ignore_abfd)
+/*ARGSUSED*/
+const bfd_target *
+_bfd_dummy_target (ignore_abfd)
+ bfd *ignore_abfd ATTRIBUTE_UNUSED;
{
+ bfd_set_error (bfd_error_wrong_format);
return 0;
}
\f
-/** zalloc -- allocate and clear storage */
+/* Allocate memory using malloc. */
-
-#ifndef zalloc
-char *
-DEFUN(zalloc,(size),
- bfd_size_type size)
+PTR
+bfd_malloc (size)
+ size_t size;
{
- char *ptr = (char *) malloc ((size_t)size);
-
- if ((ptr != NULL) && (size != 0))
- memset(ptr,0, (size_t) size);
+ PTR ptr;
+ ptr = (PTR) malloc (size);
+ if (ptr == NULL && size != 0)
+ bfd_set_error (bfd_error_no_memory);
return ptr;
}
-#endif
-/*
-INTERNAL_FUNCTION
- bfd_xmalloc
+/* Reallocate memory using realloc. */
-SYNOPSIS
- PTR bfd_xmalloc( bfd_size_type size);
+PTR
+bfd_realloc (ptr, size)
+ PTR ptr;
+ size_t size;
+{
+ PTR ret;
-DESCRIPTION
- Like malloc, but exit if no more memory.
+ if (ptr == NULL)
+ ret = malloc (size);
+ else
+ ret = realloc (ptr, size);
-*/
+ if (ret == NULL)
+ bfd_set_error (bfd_error_no_memory);
-/** There is major inconsistency in how running out of memory is handled.
- Some routines return a NULL, and set bfd_error to no_memory.
- However, obstack routines can't do this ... */
+ return ret;
+}
+/* Allocate memory using malloc and clear it. */
-DEFUN(PTR bfd_xmalloc,(size),
- bfd_size_type size)
+PTR
+bfd_zmalloc (size)
+ size_t size;
{
- static CONST char no_memory_message[] = "Virtual memory exhausted!\n";
PTR ptr;
- if (size == 0) size = 1;
- ptr = (PTR)malloc((size_t) size);
- if (!ptr)
- {
- write (2, no_memory_message, sizeof(no_memory_message)-1);
- exit (-1);
- }
- return ptr;
-}
-/*
-INTERNAL_FUNCTION
- bfd_xmalloc_by_size_t
+ ptr = (PTR) malloc (size);
-SYNOPSIS
- PTR bfd_xmalloc_by_size_t ( size_t size);
+ if (size != 0)
+ {
+ if (ptr == NULL)
+ bfd_set_error (bfd_error_no_memory);
+ else
+ memset (ptr, 0, size);
+ }
-DESCRIPTION
- Like malloc, but exit if no more memory.
- Uses size_t, so it's suitable for use as obstack_chunk_alloc.
- */
-PTR
-DEFUN(bfd_xmalloc_by_size_t, (size),
- size_t size)
-{
- return bfd_xmalloc ((bfd_size_type) size);
+ return ptr;
}
\f
/* Some IO code */
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 DEFUN(real_read,(where, a,b, file),
- PTR where AND
- int a AND
- int b AND
- FILE *file)
+static int
+real_read (where, a,b, file)
+ PTR where;
+ size_t a;
+ size_t b;
+ FILE *file;
{
- return fread(where, a,b,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 (FIXME: how are errors and end of file dealt
+ with? We never call bfd_set_error, which is probably a mistake). */
+
bfd_size_type
-DEFUN(bfd_read,(ptr, size, nitems, abfd),
- PTR ptr AND
- bfd_size_type size AND
- bfd_size_type nitems AND
- bfd *abfd)
+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, (int)(size*nitems), bfd_cache_lookup(abfd));
-#ifdef FILE_OFFSET_IS_CHAR_INDEX
+
+ 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 * nitems;
+ if (abfd->where + get > bim->size)
+ {
+ if (bim->size < abfd->where)
+ get = 0;
+ else
+ get = bim->size - abfd->where;
+ bfd_set_error (bfd_error_file_truncated);
+ }
+ memcpy (ptr, bim->buffer + abfd->where, get);
+ abfd->where += get;
+ return get;
+ }
+
+ nread = real_read (ptr, 1, (size_t)(size*nitems), bfd_cache_lookup(abfd));
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;
+}
+\f
+/* 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;
+ 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, (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)
+ {
+ 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)
+ && (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;
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ 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;
+}
+
+#endif /* USE_MMAP */
+\f
bfd_size_type
bfd_write (ptr, size, nitems, abfd)
CONST PTR ptr;
bfd_size_type nitems;
bfd *abfd;
{
- int nwrote = fwrite (ptr, 1, (int) (size * nitems), bfd_cache_lookup (abfd));
-#ifdef FILE_OFFSET_IS_CHAR_INDEX
+ long nwrote;
+
+ if ((abfd->flags & BFD_IN_MEMORY) != 0)
+ {
+ struct bfd_in_memory *bim = (struct bfd_in_memory *) (abfd->iostream);
+ size *= nitems;
+ if (abfd->where + size > bim->size)
+ {
+ long newsize, oldsize = (bim->size + 127) & ~127;
+ bim->size = abfd->where + size;
+ /* Round up to cut down on memory fragmentation */
+ newsize = (bim->size + 127) & ~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);
+ abfd->where += size;
+ return size;
+ }
+
+ nwrote = fwrite (ptr, 1, (size_t) (size * nitems),
+ bfd_cache_lookup (abfd));
if (nwrote > 0)
abfd->where += nwrote;
-#endif
- if (nwrote != size * nitems)
+ if ((bfd_size_type) nwrote != size * nitems)
{
#ifdef ENOSPC
if (nwrote >= 0)
errno = ENOSPC;
#endif
- bfd_error = system_call_error;
+ bfd_set_error (bfd_error_system_call);
}
return nwrote;
}
void bfd_write_bigendian_4byte_int(bfd *abfd, int i);
DESCRIPTION
- Writes a 4 byte integer to the outputing bfd, in big endian
- mode regardless of what else is going on. This is useful in
+ 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
-DEFUN(bfd_write_bigendian_4byte_int,(abfd, i),
- bfd *abfd AND
- int i)
+bfd_write_bigendian_4byte_int (abfd, i)
+ bfd *abfd;
+ int i;
{
bfd_byte buffer[4];
bfd_putb32(i, buffer);
- bfd_write((PTR)buffer, 4, 1, abfd);
+ if (bfd_write((PTR)buffer, 4, 1, abfd) != 4)
+ abort ();
}
long
-DEFUN(bfd_tell,(abfd),
- bfd *abfd)
+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)
}
int
-DEFUN(bfd_flush,(abfd),
- bfd *abfd)
+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
-DEFUN(bfd_stat,(abfd, statbuf),
- bfd *abfd AND
- struct stat *statbuf)
+bfd_stat (abfd, statbuf)
+ bfd *abfd;
+ struct stat *statbuf;
{
- return fstat (fileno(bfd_cache_lookup(abfd)), 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
-DEFUN(bfd_seek,(abfd, position, direction),
- bfd * CONST abfd AND
- CONST file_ptr position AND
- CONST int direction)
+bfd_seek (abfd, position, direction)
+ bfd *abfd;
+ file_ptr position;
+ int direction;
{
int result;
FILE *f;
if (direction == SEEK_CUR && position == 0)
return 0;
-#ifdef FILE_OFFSET_IS_CHAR_INDEX
+
+ 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)
+ {
+ abfd->where = bim->size;
+ bfd_set_error (bfd_error_file_truncated);
+ return -1;
+ }
+
+ return 0;
+ }
+
if (abfd->format != bfd_archive && abfd->my_archive == 0)
{
-#ifndef NDEBUG
+#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'
In the meantime, no optimization for archives. */
}
-#endif
f = bfd_cache_lookup (abfd);
file_position = position;
if (result != 0)
{
+ int hold_errno = errno;
+
/* Force redetermination of `where' field. */
bfd_tell (abfd);
- bfd_error = system_call_error;
+
+ /* 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
{
-#ifdef FILE_OFFSET_IS_CHAR_INDEX
/* Adjust `where' field. */
if (direction == SEEK_SET)
abfd->where = position;
else
abfd->where += position;
-#endif
}
return result;
}
\f
-/** Make a string table */
-
-/*>bfd.h<
- Add string to table pointed to by table, at location starting with free_ptr.
- resizes the table if necessary (if it's NULL, creates it, ignoring
- table_length). Updates free_ptr, table, table_length */
-
-boolean
-DEFUN(bfd_add_to_string_table,(table, new_string, table_length, free_ptr),
- char **table AND
- char *new_string AND
- unsigned int *table_length AND
- char **free_ptr)
-{
- size_t string_length = strlen (new_string) + 1; /* include null here */
- char *base = *table;
- size_t space_length = *table_length;
- unsigned int offset = (base ? *free_ptr - base : 0);
-
- if (base == NULL) {
- /* Avoid a useless regrow if we can (but of course we still
- take it next time */
- space_length = (string_length < DEFAULT_STRING_SPACE_SIZE ?
- DEFAULT_STRING_SPACE_SIZE : string_length+1);
- base = zalloc ((bfd_size_type) space_length);
-
- if (base == NULL) {
- bfd_error = no_memory;
- return false;
- }
- }
-
- if ((size_t)(offset + string_length) >= space_length) {
- /* Make sure we will have enough space */
- while ((size_t)(offset + string_length) >= space_length)
- space_length += space_length/2; /* grow by 50% */
-
- base = (char *) realloc (base, space_length);
- if (base == NULL) {
- bfd_error = no_memory;
- return false;
- }
-
- }
-
- memcpy (base + offset, new_string, string_length);
- *table = base;
- *table_length = space_length;
- *free_ptr = base + offset + string_length;
-
- return true;
-}
-\f
/** The do-it-yourself (byte) sex-change kit */
/* The middle letter e.g. get<b>short indicates Big or Little endian
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 libaout.h defines GET_WORD to
- either bfd_get_32 or bfd_get_64.
+ around in macros---for example, @file{libaout.h} defines <<GET_WORD>>
+ to either <<bfd_get_32>> or <<bfd_get_64>>.
- In the put routines, val must be a bfd_vma. If we are on a
+ 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.
+ 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)
+. ((void) (*((unsigned char *)(ptr)) = (unsigned char)(val)))
.#define bfd_put_signed_8 \
. bfd_put_8
.#define bfd_get_8(abfd, 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_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
-FUNCTION
bfd_h_get_size
DESCRIPTION
These macros have the same function as their <<bfd_get_x>>
- bretherin, except that they are used for removing information
+ 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.
+ order and their data in little endian order.
.
.{* Byte swapping macros for file header data. *}
.
/* 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 (((HOST_64_BIT)0x80000000) << 32)
+#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
-DEFUN(bfd_getb16,(addr),
- register bfd_byte *addr)
+bfd_getb16 (addr)
+ register const bfd_byte *addr;
{
- return (addr[0] << 8) | addr[1];
+ return (addr[0] << 8) | addr[1];
}
bfd_vma
-DEFUN(bfd_getl16,(addr),
- register bfd_byte *addr)
+bfd_getl16 (addr)
+ register const bfd_byte *addr;
{
- return (addr[1] << 8) | addr[0];
+ return (addr[1] << 8) | addr[0];
}
bfd_signed_vma
-DEFUN(bfd_getb_signed_16,(addr),
- register bfd_byte *addr)
+bfd_getb_signed_16 (addr)
+ register const bfd_byte *addr;
{
- return COERCE16((addr[0] << 8) | addr[1]);
+ return COERCE16((addr[0] << 8) | addr[1]);
}
bfd_signed_vma
-DEFUN(bfd_getl_signed_16,(addr),
- register bfd_byte *addr)
+bfd_getl_signed_16 (addr)
+ register const bfd_byte *addr;
{
- return COERCE16((addr[1] << 8) | addr[0]);
+ return COERCE16((addr[1] << 8) | addr[0]);
}
void
-DEFUN(bfd_putb16,(data, addr),
- bfd_vma data AND
- register bfd_byte *addr)
+bfd_putb16 (data, addr)
+ bfd_vma data;
+ register bfd_byte *addr;
{
- addr[0] = (bfd_byte)(data >> 8);
- addr[1] = (bfd_byte )data;
+ addr[0] = (bfd_byte)(data >> 8);
+ addr[1] = (bfd_byte )data;
}
void
-DEFUN(bfd_putl16,(data, addr),
- bfd_vma data AND
- register bfd_byte *addr)
+bfd_putl16 (data, addr)
+ bfd_vma data;
+ register bfd_byte *addr;
{
- addr[0] = (bfd_byte )data;
- addr[1] = (bfd_byte)(data >> 8);
+ addr[0] = (bfd_byte )data;
+ addr[1] = (bfd_byte)(data >> 8);
}
bfd_vma
bfd_getb32 (addr)
- register bfd_byte *addr;
+ register const bfd_byte *addr;
{
- return (((((bfd_vma)addr[0] << 8) | addr[1]) << 8)
- | addr[2]) << 8 | addr[3];
+ 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 bfd_byte *addr;
+ register const bfd_byte *addr;
{
- return (((((bfd_vma)addr[3] << 8) | addr[2]) << 8)
- | addr[1]) << 8 | addr[0];
+ 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 bfd_byte *addr;
+ register const bfd_byte *addr;
{
- return COERCE32((((((bfd_vma)addr[0] << 8) | addr[1]) << 8)
- | addr[2]) << 8 | addr[3]);
+ 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 bfd_byte *addr;
+ register const bfd_byte *addr;
{
- return COERCE32((((((bfd_vma)addr[3] << 8) | addr[2]) << 8)
- | addr[1]) << 8 | addr[0]);
+ 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
-DEFUN(bfd_getb64,(addr),
- register bfd_byte *addr)
+bfd_getb64 (addr)
+ register const bfd_byte *addr ATTRIBUTE_UNUSED;
{
#ifdef BFD64
bfd_vma low, high;
BFD_FAIL();
return 0;
#endif
-
}
bfd_vma
-DEFUN(bfd_getl64,(addr),
- register bfd_byte *addr)
+bfd_getl64 (addr)
+ register const bfd_byte *addr ATTRIBUTE_UNUSED;
{
-
#ifdef BFD64
bfd_vma low, high;
high= (((((((addr[7] << 8) |
}
bfd_signed_vma
-DEFUN(bfd_getb_signed_64,(addr),
- register bfd_byte *addr)
+bfd_getb_signed_64 (addr)
+ register const bfd_byte *addr ATTRIBUTE_UNUSED;
{
#ifdef BFD64
bfd_vma low, high;
BFD_FAIL();
return 0;
#endif
-
}
bfd_signed_vma
-DEFUN(bfd_getl_signed_64,(addr),
- register bfd_byte *addr)
+bfd_getl_signed_64 (addr)
+ register const bfd_byte *addr ATTRIBUTE_UNUSED;
{
-
#ifdef BFD64
bfd_vma low, high;
high= (((((((addr[7] << 8) |
BFD_FAIL();
return 0;
#endif
-
}
void
-DEFUN(bfd_putb32,(data, addr),
- bfd_vma data AND
- register bfd_byte *addr)
+bfd_putb32 (data, addr)
+ bfd_vma data;
+ register bfd_byte *addr;
{
addr[0] = (bfd_byte)(data >> 24);
addr[1] = (bfd_byte)(data >> 16);
}
void
-DEFUN(bfd_putl32,(data, addr),
- bfd_vma data AND
- register bfd_byte *addr)
+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
-DEFUN(bfd_putb64,(data, addr),
- bfd_vma data AND
- register bfd_byte *addr)
+bfd_putb64 (data, addr)
+ bfd_vma data ATTRIBUTE_UNUSED;
+ register bfd_byte *addr ATTRIBUTE_UNUSED;
{
#ifdef BFD64
addr[0] = (bfd_byte)(data >> (7*8));
#else
BFD_FAIL();
#endif
-
}
void
-DEFUN(bfd_putl64,(data, addr),
- bfd_vma data AND
- register bfd_byte *addr)
+bfd_putl64 (data, addr)
+ bfd_vma data ATTRIBUTE_UNUSED;
+ register bfd_byte *addr ATTRIBUTE_UNUSED;
{
#ifdef BFD64
addr[7] = (bfd_byte)(data >> (7*8));
#else
BFD_FAIL();
#endif
-
}
-
\f
/* Default implementation */
boolean
-DEFUN(bfd_generic_get_section_contents, (abfd, section, location, offset, count),
- bfd *abfd AND
- sec_ptr section AND
- PTR location AND
- file_ptr offset AND
- 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);
+_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_set_error (bfd_error_invalid_operation);
+ return false;
+ }
+
+ if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
+ || bfd_read (location, (bfd_size_type) 1, 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 (sizeof (bfd_window_internal));
+ if (w->i == NULL)
+ return false;
+ w->i->data = (PTR) bfd_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, true)
+ == false))
+ return false;
+ return true;
+#else
+ abort ();
+#endif
}
/* This generic function can only be used in implementations where creating
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_generic_set_section_contents (abfd, section, location, offset, count)
bfd *abfd;
sec_ptr section;
PTR location;
if (count == 0)
return true;
- if (offset + count > bfd_get_section_size_after_reloc (section))
- {
- bfd_error = bad_value;
- return false;
- }
-
if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) == -1
|| bfd_write (location, (bfd_size_type) 1, count, abfd) != count)
return false;
INTERNAL_FUNCTION
bfd_log2
-DESCRIPTION
- Return the log base 2 of the value supplied, rounded up. eg an
- arg of 1025 would return 11.
-
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)
+unsigned int
+bfd_log2 (x)
bfd_vma x;
{
- unsigned result = 0;
- while ( (bfd_vma)(1<< result) < x)
- result++;
+ 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
+ && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
+ {
+ (*_bfd_error_handler)
+ ("%s: compiled for a %s endian system and target is %s endian",
+ bfd_get_filename (ibfd),
+ bfd_big_endian (ibfd) ? "big" : "little",
+ bfd_big_endian (obfd) ? "big" : "little");
+
+ bfd_set_error (bfd_error_wrong_format);
+ return false;
+ }
+
+ return true;
+}
projects / external / binutils.git / blobdiff