/* Assorted BFD support routines, only used internally.
- Copyright 1990, 91, 92, 93, 94 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
Internal functions
completeness.
*/
-/*ARGSUSED*/
-boolean
-_bfd_dummy_new_section_hook (ignore, ignore_newsect)
- bfd *ignore;
- asection *ignore_newsect;
-{
- return true;
-}
+/* A routine which is used in target vectors for unsupported
+ operations. */
/*ARGSUSED*/
boolean
bfd_false (ignore)
- bfd *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
bfd_true (ignore)
- bfd *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
bfd_nullvoidptr (ignore)
- bfd *ignore;
+ bfd *ignore ATTRIBUTE_UNUSED;
{
- return (PTR)NULL;
+ bfd_set_error (bfd_error_invalid_operation);
+ return NULL;
}
/*ARGSUSED*/
int
bfd_0 (ignore)
- bfd *ignore;
+ bfd *ignore ATTRIBUTE_UNUSED;
{
return 0;
}
/*ARGSUSED*/
unsigned int
bfd_0u (ignore)
- bfd *ignore;
+ bfd *ignore ATTRIBUTE_UNUSED;
{
return 0;
}
/*ARGUSED*/
long
bfd_0l (ignore)
- bfd *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
bfd_void (ignore)
- bfd *ignore;
+ bfd *ignore ATTRIBUTE_UNUSED;
{
}
/*ARGSUSED*/
boolean
-_bfd_dummy_core_file_matches_executable_p (ignore_core_bfd, ignore_exec_bfd)
- bfd *ignore_core_bfd;
- 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_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 *
-_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
-_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;
}
/*ARGSUSED*/
-bfd_target *
+const bfd_target *
_bfd_dummy_target (ignore_abfd)
- bfd *ignore_abfd;
+ bfd *ignore_abfd ATTRIBUTE_UNUSED;
{
+ bfd_set_error (bfd_error_wrong_format);
return 0;
}
\f
+/* Allocate memory using malloc. */
-#ifndef bfd_zmalloc
-/* allocate and clear storage */
+PTR
+bfd_malloc (size)
+ size_t size;
+{
+ PTR ptr;
-char *
+ ptr = (PTR) malloc (size);
+ if (ptr == NULL && size != 0)
+ bfd_set_error (bfd_error_no_memory);
+ return ptr;
+}
+
+/* Reallocate memory using realloc. */
+
+PTR
+bfd_realloc (ptr, size)
+ PTR ptr;
+ size_t size;
+{
+ PTR ret;
+
+ if (ptr == NULL)
+ ret = malloc (size);
+ else
+ ret = realloc (ptr, size);
+
+ if (ret == NULL)
+ bfd_set_error (bfd_error_no_memory);
+
+ return ret;
+}
+
+/* Allocate memory using malloc and clear it. */
+
+PTR
bfd_zmalloc (size)
- bfd_size_type size;
+ size_t size;
{
- char *ptr = (char *) malloc ((size_t) size);
+ PTR ptr;
- if (ptr && size)
- memset(ptr, 0, (size_t) size);
+ ptr = (PTR) malloc (size);
+
+ if (size != 0)
+ {
+ if (ptr == NULL)
+ bfd_set_error (bfd_error_no_memory);
+ else
+ memset (ptr, 0, size);
+ }
return ptr;
}
-#endif /* bfd_zmalloc */
\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
+static int
real_read (where, a,b, file)
PTR where;
- int a;
- int b;
+ 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
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.
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 (nread != (int) (size * nitems))
{
if (ferror (bfd_cache_lookup (abfd)))
bfd_set_error (bfd_error_system_call);
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)
{
file_ptr ptr;
+ if ((abfd->flags & BFD_IN_MEMORY) != 0)
+ return abfd->where;
+
ptr = ftell (bfd_cache_lookup(abfd));
if (abfd->my_archive)
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;
{
- 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
int
bfd_seek (abfd, position, direction)
- bfd * CONST abfd;
- CONST file_ptr position;
- CONST int 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)
{
#if 0
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_set_error (bfd_error_system_call);
+
+ /* 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
-bfd_add_to_string_table (table, new_string, table_length, free_ptr)
- char **table;
- char *new_string;
- unsigned int *table_length;
- 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 = bfd_zmalloc ((bfd_size_type) space_length);
-
- if (base == NULL) {
- bfd_set_error (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_set_error (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
.{* 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))
+.
*/
/*
/* 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 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_getb32 (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 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 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 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
bfd_getb64 (addr)
- register const bfd_byte *addr;
+ register const bfd_byte *addr ATTRIBUTE_UNUSED;
{
#ifdef BFD64
bfd_vma low, high;
bfd_vma
bfd_getl64 (addr)
- register const bfd_byte *addr;
+ register const bfd_byte *addr ATTRIBUTE_UNUSED;
{
#ifdef BFD64
bfd_vma low, high;
bfd_signed_vma
bfd_getb_signed_64 (addr)
- register const bfd_byte *addr;
+ register const bfd_byte *addr ATTRIBUTE_UNUSED;
{
#ifdef BFD64
bfd_vma low, high;
bfd_signed_vma
bfd_getl_signed_64 (addr)
- register const bfd_byte *addr;
+ register const bfd_byte *addr ATTRIBUTE_UNUSED;
{
#ifdef BFD64
bfd_vma low, high;
void
bfd_putb64 (data, addr)
- bfd_vma data;
- register bfd_byte *addr;
+ bfd_vma data ATTRIBUTE_UNUSED;
+ register bfd_byte *addr ATTRIBUTE_UNUSED;
{
#ifdef BFD64
addr[0] = (bfd_byte)(data >> (7*8));
void
bfd_putl64 (data, addr)
- bfd_vma data;
- register bfd_byte *addr;
+ bfd_vma data ATTRIBUTE_UNUSED;
+ register bfd_byte *addr ATTRIBUTE_UNUSED;
{
#ifdef BFD64
addr[7] = (bfd_byte)(data >> (7*8));
/* Default implementation */
boolean
-bfd_generic_get_section_contents (abfd, section, location, offset, count)
+_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);
+ 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;
@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 (abfd, sym)
+bfd_generic_is_local_label_name (abfd, name)
bfd *abfd;
- asymbol *sym;
+ const char *name;
{
char locals_prefix = (bfd_get_symbol_leading_char (abfd) == '_') ? 'L' : '.';
- return (sym->name[0] == locals_prefix);
+ 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