-/* libbfd.c -- random BFD support routines, only used internally.
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
+/* Assorted BFD support routines, only used internally.
+ Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/* $Id$ */
-
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
-/** Dummies for targets that don't want or need to implement
- certain operations */
+/*
+SECTION
+ libbfd
+
+DESCRIPTION
+ This file contains various routines which 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),
DEFUN(zalloc,(size),
bfd_size_type size)
{
- char *ptr = (char *) malloc ((int)size);
+ char *ptr = (char *) malloc ((size_t)size);
if ((ptr != NULL) && (size != 0))
- memset(ptr,0, size);
+ memset(ptr,0, (size_t) size);
return ptr;
}
#endif
+
+/*
+INTERNAL_FUNCTION
+ bfd_xmalloc
+
+SYNOPSIS
+ PTR bfd_xmalloc( bfd_size_type size);
+
+DESCRIPTION
+ Like malloc, but exit if no more 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 ... */
+
+
+DEFUN(PTR bfd_xmalloc,(size),
+ bfd_size_type 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
+
+SYNOPSIS
+ PTR bfd_xmalloc_by_size_t ( size_t 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);
+}
\f
/* Some IO code */
bfd_size_type nitems AND
bfd *abfd)
{
- return (bfd_size_type)real_read (ptr, 1, (int)(size*nitems), bfd_cache_lookup(abfd));
+ int nread;
+ nread = real_read (ptr, 1, (int)(size*nitems), bfd_cache_lookup(abfd));
+#ifdef FILE_OFFSET_IS_CHAR_INDEX
+ if (nread > 0)
+ abfd->where += nread;
+#endif
+ return nread;
}
bfd_size_type
bfd_size_type nitems AND
bfd *abfd)
{
- return fwrite (ptr, 1, (int)(size*nitems), bfd_cache_lookup(abfd));
+ int nwrote = fwrite (ptr, 1, (int)(size*nitems), bfd_cache_lookup(abfd));
+#ifdef FILE_OFFSET_IS_CHAR_INDEX
+ if (nwrote > 0)
+ abfd->where += nwrote;
+#endif
+ return nwrote;
}
+/*
+INTERNAL_FUNCTION
+ bfd_write_bigendian_4byte_int
+
+SYNOPSIS
+ 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
+ archives.
+
+*/
void
DEFUN(bfd_write_bigendian_4byte_int,(abfd, i),
bfd *abfd AND
int i)
{
- char buffer[4];
- _do_putb32(i, buffer);
- bfd_write(buffer, 4, 1, abfd);
+ bfd_byte buffer[4];
+ bfd_putb32(i, buffer);
+ bfd_write((PTR)buffer, 4, 1, abfd);
}
-int
-DEFUN(bfd_seek,(abfd, position, direction),
- bfd * CONST abfd AND
- CONST file_ptr position AND
- CONST int direction)
+long
+DEFUN(bfd_tell,(abfd),
+ bfd *abfd)
{
- /* 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_SET && abfd->my_archive != NULL)
- {
- /* This is a set within an archive, so we need to
- add the base of the object within the archive */
- return(fseek(bfd_cache_lookup(abfd),
- position + abfd->origin,
- direction));
- }
- else
- {
- return(fseek(bfd_cache_lookup(abfd), position, direction));
- }
+ file_ptr ptr;
+
+ ptr = ftell (bfd_cache_lookup(abfd));
+
+ if (abfd->my_archive)
+ ptr -= abfd->origin;
+ abfd->where = ptr;
+ return ptr;
}
-long
-DEFUN(bfd_tell,(abfd),
+int
+DEFUN(bfd_flush,(abfd),
bfd *abfd)
{
- file_ptr ptr;
+ return fflush (bfd_cache_lookup(abfd));
+}
- ptr = ftell (bfd_cache_lookup(abfd));
+int
+DEFUN(bfd_stat,(abfd, statbuf),
+ bfd *abfd AND
+ struct stat *statbuf)
+{
+ return fstat (fileno(bfd_cache_lookup(abfd)), statbuf);
+}
- if (abfd->my_archive)
- ptr -= abfd->origin;
- return ptr;
+int
+DEFUN(bfd_seek,(abfd, position, direction),
+ bfd * CONST abfd AND
+ CONST file_ptr position AND
+ CONST 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)
+ {
+#ifndef NDEBUG
+ /* 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);
+ 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 */
take it next time */
space_length = (string_length < DEFAULT_STRING_SPACE_SIZE ?
DEFAULT_STRING_SPACE_SIZE : string_length+1);
- base = zalloc (space_length);
+ base = zalloc ((bfd_size_type) space_length);
if (base == NULL) {
bfd_error = no_memory;
functions in swap.h #ifdef __GNUC__.
Gprof them later and find out. */
-/*proto*
-*i bfd_put_size
-*i bfd_get_size
-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.
-*+
-#define bfd_put_8(abfd, val, ptr) \
- (*((char *)ptr) = (char)val)
-#define bfd_get_8(abfd, ptr) \
- (*((char *)ptr))
-#define bfd_put_16(abfd, val, ptr) \
- BFD_SEND(abfd, bfd_putx16, (val,ptr))
-#define bfd_get_16(abfd, ptr) \
- BFD_SEND(abfd, bfd_getx16, (ptr))
-#define bfd_put_32(abfd, val, ptr) \
- BFD_SEND(abfd, bfd_putx32, (val,ptr))
-#define bfd_get_32(abfd, ptr) \
- BFD_SEND(abfd, bfd_getx32, (ptr))
-#define bfd_put_64(abfd, val, ptr) \
- BFD_SEND(abfd, bfd_putx64, (val, ptr))
-#define bfd_get_64(abfd, ptr) \
- BFD_SEND(abfd, bfd_getx64, (ptr))
-*-
-*-*/
-
-/*proto*
-*i bfd_h_put_size
-*i bfd_h_get_size
-These macros have the same function as their @code{bfd_get_x}
-bretherin, 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
-endan order.
-*+
-#define bfd_h_put_8(abfd, val, ptr) \
- (*((char *)ptr) = (char)val)
-#define bfd_h_get_8(abfd, ptr) \
- (*((char *)ptr))
-#define bfd_h_put_16(abfd, val, ptr) \
- BFD_SEND(abfd, bfd_h_putx16,(val,ptr))
-#define bfd_h_get_16(abfd, ptr) \
- BFD_SEND(abfd, bfd_h_getx16,(ptr))
-#define bfd_h_put_32(abfd, val, ptr) \
- BFD_SEND(abfd, bfd_h_putx32,(val,ptr))
-#define bfd_h_get_32(abfd, ptr) \
- BFD_SEND(abfd, bfd_h_getx32,(ptr))
-#define bfd_h_put_64(abfd, val, ptr) \
- BFD_SEND(abfd, bfd_h_putx64,(val, ptr))
-#define bfd_h_get_64(abfd, ptr) \
- BFD_SEND(abfd, bfd_h_getx64,(ptr))
-*-
-*-*/
+/*
+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 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
+ 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
+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
+ 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 (((HOST_64_BIT)0x80000000) << 32)
+#define COERCE64(x) ((bfd_signed_vma)\
+ (((x) ^ EIGHT_GAZILLION) - EIGHT_GAZILLION))
bfd_vma
-DEFUN(_do_getb16,(addr),
+DEFUN(bfd_getb16,(addr),
register bfd_byte *addr)
{
return (addr[0] << 8) | addr[1];
}
bfd_vma
-DEFUN(_do_getl16,(addr),
+DEFUN(bfd_getl16,(addr),
register bfd_byte *addr)
{
return (addr[1] << 8) | addr[0];
}
+bfd_signed_vma
+DEFUN(bfd_getb_signed_16,(addr),
+ register bfd_byte *addr)
+{
+ return COERCE16((addr[0] << 8) | addr[1]);
+}
+
+bfd_signed_vma
+DEFUN(bfd_getl_signed_16,(addr),
+ register bfd_byte *addr)
+{
+ return COERCE16((addr[1] << 8) | addr[0]);
+}
+
void
-DEFUN(_do_putb16,(data, addr),
+DEFUN(bfd_putb16,(data, addr),
bfd_vma data AND
register bfd_byte *addr)
{
}
void
-DEFUN(_do_putl16,(data, addr),
+DEFUN(bfd_putl16,(data, addr),
bfd_vma data AND
register bfd_byte *addr)
{
}
bfd_vma
-DEFUN(_do_getb32,(addr),
- register bfd_byte *addr)
+bfd_getb32 (addr)
+ register bfd_byte *addr;
{
return ((((addr[0] << 8) | addr[1]) << 8) | addr[2]) << 8 | addr[3];
}
bfd_vma
-_do_getl32 (addr)
+bfd_getl32 (addr)
register bfd_byte *addr;
{
return ((((addr[3] << 8) | addr[2]) << 8) | addr[1]) << 8 | addr[0];
}
+bfd_signed_vma
+bfd_getb_signed_32 (addr)
+ register bfd_byte *addr;
+{
+ return COERCE32(((((addr[0] << 8) | addr[1]) << 8)
+ | addr[2]) << 8 | addr[3]);
+}
+
+bfd_signed_vma
+bfd_getl_signed_32 (addr)
+ register bfd_byte *addr;
+{
+ return COERCE32(((((addr[3] << 8) | addr[2]) << 8)
+ | addr[1]) << 8 | addr[0]);
+}
+
bfd_vma
-DEFUN(_do_getb64,(addr),
+DEFUN(bfd_getb64,(addr),
register bfd_byte *addr)
{
-#ifdef HOST_64_BIT
- bfd_64_type low, high;
+#ifdef BFD64
+ bfd_vma low, high;
high= ((((((((addr[0]) << 8) |
addr[1]) << 8) |
}
bfd_vma
-DEFUN(_do_getl64,(addr),
+DEFUN(bfd_getl64,(addr),
register bfd_byte *addr)
{
-#ifdef HOST_64_BIT
- bfd_64_type low, high;
+#ifdef BFD64
+ bfd_vma low, high;
high= (((((((addr[7] << 8) |
addr[6]) << 8) |
addr[5]) << 8) |
}
+bfd_signed_vma
+DEFUN(bfd_getb_signed_64,(addr),
+ register bfd_byte *addr)
+{
+#ifdef BFD64
+ bfd_vma low, high;
+
+ high= ((((((((addr[0]) << 8) |
+ addr[1]) << 8) |
+ addr[2]) << 8) |
+ addr[3]) );
+
+ low = ((((((((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
+DEFUN(bfd_getl_signed_64,(addr),
+ register bfd_byte *addr)
+{
+
+#ifdef BFD64
+ bfd_vma low, high;
+ high= (((((((addr[7] << 8) |
+ addr[6]) << 8) |
+ addr[5]) << 8) |
+ addr[4]));
+
+ low = (((((((addr[3] << 8) |
+ addr[2]) << 8) |
+ addr[1]) << 8) |
+ addr[0]) );
+
+ return COERCE64(high << 32 | low);
+#else
+ BFD_FAIL();
+ return 0;
+#endif
+
+}
+
void
-DEFUN(_do_putb32,(data, addr),
+DEFUN(bfd_putb32,(data, addr),
bfd_vma data AND
register bfd_byte *addr)
{
}
void
-DEFUN(_do_putl32,(data, addr),
+DEFUN(bfd_putl32,(data, addr),
bfd_vma data AND
register bfd_byte *addr)
{
addr[3] = (bfd_byte)(data >> 24);
}
void
-DEFUN(_do_putb64,(data, addr),
+DEFUN(bfd_putb64,(data, addr),
bfd_vma data AND
register bfd_byte *addr)
{
-#ifdef HOST_64_BIT
+#ifdef BFD64
addr[0] = (bfd_byte)(data >> (7*8));
addr[1] = (bfd_byte)(data >> (6*8));
addr[2] = (bfd_byte)(data >> (5*8));
}
void
-DEFUN(_do_putl64,(data, addr),
+DEFUN(bfd_putl64,(data, addr),
bfd_vma data AND
register bfd_byte *addr)
{
-#ifdef HOST_64_BIT
+#ifdef BFD64
addr[7] = (bfd_byte)(data >> (7*8));
addr[6] = (bfd_byte)(data >> (6*8));
addr[5] = (bfd_byte)(data >> (5*8));
{
if (count == 0)
return true;
- if ((bfd_size_type)(offset+count) > section->size
- || bfd_seek(abfd,(file_ptr)( section->filepos + offset), SEEK_SET) == -1
+ 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->size
+ if ((bfd_size_type)(offset+count) > bfd_get_section_size_after_reloc(section)
|| bfd_seek(abfd, (file_ptr)(section->filepos + offset), SEEK_SET) == -1
|| bfd_write(location, (bfd_size_type)1, count, abfd) != count)
return (false); /* on error */
return (true);
}
-/*proto-internal*
-*i bfd_log2
-Return the log base 2 of the value supplied, rounded up. eg an arg
-of 1025 would return 11.
-*; PROTO(bfd_vma, bfd_log2,(bfd_vma x));
-*-*/
+/*
+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);
+*/
-bfd_vma bfd_log2(x)
-bfd_vma x;
+unsigned
+bfd_log2(x)
+ bfd_vma x;
{
- bfd_vma result = 0;
+ unsigned result = 0;
while ( (bfd_vma)(1<< result) < x)
result++;
return result;
projects / deliverable / binutils-gdb.git / blobdiff