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Diffstat (limited to 'bfd/libbfd.c')
| -rw-r--r-- | bfd/libbfd.c | 1382 |
1 files changed, 0 insertions, 1382 deletions
diff --git a/bfd/libbfd.c b/bfd/libbfd.c deleted file mode 100644 index 695df8d51ab..00000000000 --- a/bfd/libbfd.c +++ /dev/null @@ -1,1382 +0,0 @@ -/* Assorted BFD support routines, only used internally. - Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - 2000, 2001 - Free Software Foundation, Inc. - Written by Cygnus Support. - -This file is part of BFD, the Binary File Descriptor library. - -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "bfd.h" -#include "sysdep.h" -#include "libbfd.h" - -#ifndef HAVE_GETPAGESIZE -#define getpagesize() 2048 -#endif - -static 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. */ - -boolean -bfd_false (ignore) - bfd *ignore ATTRIBUTE_UNUSED; -{ - bfd_set_error (bfd_error_invalid_operation); - return false; -} - -/* A routine which is used in target vectors for supported operations - which do not actually do anything. */ - -boolean -bfd_true (ignore) - bfd *ignore ATTRIBUTE_UNUSED; -{ - return true; -} - -/* A routine which is used in target vectors for unsupported - operations which return a pointer value. */ - -PTR -bfd_nullvoidptr (ignore) - bfd *ignore ATTRIBUTE_UNUSED; -{ - bfd_set_error (bfd_error_invalid_operation); - return NULL; -} - -int -bfd_0 (ignore) - bfd *ignore ATTRIBUTE_UNUSED; -{ - return 0; -} - -unsigned int -bfd_0u (ignore) - bfd *ignore ATTRIBUTE_UNUSED; -{ - return 0; -} - -long -bfd_0l (ignore) - bfd *ignore ATTRIBUTE_UNUSED; -{ - return 0; -} - -/* A routine which is used in target vectors for unsupported - operations which return -1 on error. */ - -long -_bfd_n1 (ignore_abfd) - bfd *ignore_abfd ATTRIBUTE_UNUSED; -{ - bfd_set_error (bfd_error_invalid_operation); - return -1; -} - -void -bfd_void (ignore) - bfd *ignore ATTRIBUTE_UNUSED; -{ -} - -boolean -_bfd_nocore_core_file_matches_executable_p (ignore_core_bfd, ignore_exec_bfd) - bfd *ignore_core_bfd ATTRIBUTE_UNUSED; - bfd *ignore_exec_bfd ATTRIBUTE_UNUSED; -{ - bfd_set_error (bfd_error_invalid_operation); - return false; -} - -/* Routine to handle core_file_failing_command entry point for targets - without core file support. */ - -char * -_bfd_nocore_core_file_failing_command (ignore_abfd) - bfd *ignore_abfd ATTRIBUTE_UNUSED; -{ - bfd_set_error (bfd_error_invalid_operation); - return (char *)NULL; -} - -/* Routine to handle core_file_failing_signal entry point for targets - without core file support. */ - -int -_bfd_nocore_core_file_failing_signal (ignore_abfd) - bfd *ignore_abfd ATTRIBUTE_UNUSED; -{ - bfd_set_error (bfd_error_invalid_operation); - return 0; -} - -const bfd_target * -_bfd_dummy_target (ignore_abfd) - bfd *ignore_abfd ATTRIBUTE_UNUSED; -{ - bfd_set_error (bfd_error_wrong_format); - return 0; -} - -/* Allocate memory using malloc. */ - -PTR -bfd_malloc (size) - size_t size; -{ - PTR ptr; - - 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) - size_t size; -{ - PTR ptr; - - ptr = (PTR) malloc (size); - - if (size != 0) - { - if (ptr == NULL) - bfd_set_error (bfd_error_no_memory); - else - memset (ptr, 0, size); - } - - return ptr; -} - -/* Some IO code */ - -/* Note that archive entries don't have streams; they share their parent's. - This allows someone to play with the iostream behind BFD's back. - - Also, note that the origin pointer points to the beginning of a file's - contents (0 for non-archive elements). For archive entries this is the - first octet in the file, NOT the beginning of the archive header. */ - -static int -real_read (where, a,b, file) - PTR where; - size_t a; - size_t b; - FILE *file; -{ - /* FIXME - this looks like an optimization, but it's really to cover - up for a feature of some OSs (not solaris - sigh) that - ld/pe-dll.c takes advantage of (apparently) when it creates BFDs - internally and tries to link against them. BFD seems to be smart - enough to realize there are no symbol records in the "file" that - doesn't exist but attempts to read them anyway. On Solaris, - attempting to read zero bytes from a NULL file results in a core - dump, but on other platforms it just returns zero bytes read. - This makes it to something reasonable. - DJ */ - if (a == 0 || b == 0) - return 0; - - -#if defined (__VAX) && defined (VMS) - /* Apparently fread on Vax VMS does not keep the record length - information. */ - return read (fileno (file), where, a * b); -#else - return fread (where, a, b, file); -#endif -} - -/* Return value is amount read (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; - - 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 < (bfd_size_type) abfd->where) - get = 0; - else - get = bim->size - abfd->where; - bfd_set_error (bfd_error_file_truncated); - } - memcpy (ptr, bim->buffer + abfd->where, 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; - - /* 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; -} - -/* 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 */ - -bfd_size_type -bfd_write (ptr, size, nitems, abfd) - CONST PTR ptr; - bfd_size_type size; - bfd_size_type nitems; - bfd *abfd; -{ - 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; - 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; - - if ((abfd->flags & BFD_IN_MEMORY) != 0) - return abfd->where; - - ptr = ftell (bfd_cache_lookup(abfd)); - - if (abfd->my_archive) - ptr -= abfd->origin; - abfd->where = ptr; - return ptr; -} - -int -bfd_flush (abfd) - bfd *abfd; -{ - if ((abfd->flags & BFD_IN_MEMORY) != 0) - return 0; - return fflush (bfd_cache_lookup(abfd)); -} - -/* Returns 0 for success, negative value for failure (in which case - bfd_get_error can retrieve the error code). */ -int -bfd_stat (abfd, statbuf) - bfd *abfd; - struct stat *statbuf; -{ - FILE *f; - int result; - - if ((abfd->flags & BFD_IN_MEMORY) != 0) - abort (); - - f = bfd_cache_lookup (abfd); - if (f == NULL) - { - bfd_set_error (bfd_error_system_call); - return -1; - } - result = fstat (fileno (f), statbuf); - if (result < 0) - bfd_set_error (bfd_error_system_call); - return result; -} - -/* Returns 0 for success, nonzero for failure (in which case bfd_get_error - can retrieve the error code). */ - -int -bfd_seek (abfd, position, direction) - bfd *abfd; - file_ptr position; - int direction; -{ - int result; - FILE *f; - 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; - - 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 ((bfd_size_type) abfd->where > bim->size) - { - if ((abfd->direction == write_direction) || - (abfd->direction == both_direction)) - { - long newsize, oldsize = (bim->size + 127) & ~127; - bim->size = abfd->where; - /* 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; - bfd_set_error (bfd_error_no_memory); - return -1; - } - } - } - else - { - abfd->where = bim->size; - bfd_set_error (bfd_error_file_truncated); - return -1; - } - } - return 0; - } - - if (abfd->format != bfd_archive && abfd->my_archive == 0) - { -#if 0 - /* Explanation for this code: I'm only about 95+% sure that the above - conditions are sufficient and that all i/o calls are properly - adjusting the `where' field. So this is sort of an `assert' - that the `where' field is correct. If we can go a while without - tripping the abort, we can probably safely disable this code, - so that the real optimizations happen. */ - file_ptr where_am_i_now; - where_am_i_now = ftell (bfd_cache_lookup (abfd)); - if (abfd->my_archive) - where_am_i_now -= abfd->origin; - if (where_am_i_now != abfd->where) - abort (); -#endif - if (direction == SEEK_SET && position == abfd->where) - return 0; - } - else - { - /* We need something smarter to optimize access to archives. - Currently, anything inside an archive is read via the file - handle for the archive. Which means that a bfd_seek on one - component affects the `current position' in the archive, as - well as in any other component. - - It might be sufficient to put a spike through the cache - abstraction, and look to the archive for the file position, - but I think we should try for something cleaner. - - In the meantime, no optimization for archives. */ - } - - f = bfd_cache_lookup (abfd); - file_position = position; - if (direction == SEEK_SET && abfd->my_archive != NULL) - file_position += abfd->origin; - - result = fseek (f, file_position, direction); - if (result != 0) - { - int hold_errno = errno; - - /* Force redetermination of `where' field. */ - bfd_tell (abfd); - - /* An EINVAL error probably means that the file offset was - absurd. */ - if (hold_errno == EINVAL) - bfd_set_error (bfd_error_file_truncated); - else - { - bfd_set_error (bfd_error_system_call); - errno = hold_errno; - } - } - else - { - /* Adjust `where' field. */ - if (direction == SEEK_SET) - abfd->where = position; - else - abfd->where += position; - } - return result; -} - -/** The do-it-yourself (byte) sex-change kit */ - -/* The middle letter e.g. get<b>short indicates Big or Little endian - target machine. It doesn't matter what the byte order of the host - machine is; these routines work for either. */ - -/* FIXME: Should these take a count argument? - Answer (gnu@cygnus.com): No, but perhaps they should be inline - functions in swap.h #ifdef __GNUC__. - Gprof them later and find out. */ - -/* -FUNCTION - bfd_put_size -FUNCTION - bfd_get_size - -DESCRIPTION - These macros as used for reading and writing raw data in - sections; each access (except for bytes) is vectored through - the target format of the BFD and mangled accordingly. The - mangling performs any necessary endian translations and - removes alignment restrictions. Note that types accepted and - returned by these macros are identical so they can be swapped - around in macros---for example, @file{libaout.h} defines <<GET_WORD>> - to either <<bfd_get_32>> or <<bfd_get_64>>. - - In the put routines, @var{val} must be a <<bfd_vma>>. If we are on a - system without prototypes, the caller is responsible for making - sure that is true, with a cast if necessary. We don't cast - them in the macro definitions because that would prevent <<lint>> - or <<gcc -Wall>> from detecting sins such as passing a pointer. - To detect calling these with less than a <<bfd_vma>>, use - <<gcc -Wconversion>> on a host with 64 bit <<bfd_vma>>'s. - -. -.{* Byte swapping macros for user section data. *} -. -.#define bfd_put_8(abfd, val, ptr) \ -. ((void) (*((unsigned char *) (ptr)) = (unsigned char) (val))) -.#define bfd_put_signed_8 \ -. bfd_put_8 -.#define bfd_get_8(abfd, ptr) \ -. (*(unsigned char *) (ptr)) -.#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)) -. -.#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 - 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) (long) (((unsigned long) (x) ^ 0x80000000) - 0x80000000)) -#define EIGHT_GAZILLION (((BFD_HOST_64_BIT)0x80000000) << 32) -#define COERCE64(x) \ - (((bfd_signed_vma) (x) ^ EIGHT_GAZILLION) - EIGHT_GAZILLION) - -bfd_vma -bfd_getb16 (addr) - register const bfd_byte *addr; -{ - return (addr[0] << 8) | addr[1]; -} - -bfd_vma -bfd_getl16 (addr) - register const bfd_byte *addr; -{ - return (addr[1] << 8) | addr[0]; -} - -bfd_signed_vma -bfd_getb_signed_16 (addr) - register const bfd_byte *addr; -{ - return COERCE16((addr[0] << 8) | addr[1]); -} - -bfd_signed_vma -bfd_getl_signed_16 (addr) - register const bfd_byte *addr; -{ - return COERCE16((addr[1] << 8) | addr[0]); -} - -void -bfd_putb16 (data, addr) - bfd_vma data; - register bfd_byte *addr; -{ - addr[0] = (bfd_byte) (data >> 8); - addr[1] = (bfd_byte) data; -} - -void -bfd_putl16 (data, addr) - bfd_vma data; - register bfd_byte *addr; -{ - addr[0] = (bfd_byte) data; - addr[1] = (bfd_byte) (data >> 8); -} - -bfd_vma -bfd_getb32 (addr) - register const bfd_byte *addr; -{ - unsigned long v; - - v = (unsigned long) addr[0] << 24; - v |= (unsigned long) addr[1] << 16; - v |= (unsigned long) addr[2] << 8; - v |= (unsigned long) addr[3]; - return (bfd_vma) v; -} - -bfd_vma -bfd_getl32 (addr) - register const bfd_byte *addr; -{ - unsigned long v; - - v = (unsigned long) addr[0]; - v |= (unsigned long) addr[1] << 8; - v |= (unsigned long) addr[2] << 16; - v |= (unsigned long) addr[3] << 24; - return (bfd_vma) v; -} - -bfd_signed_vma -bfd_getb_signed_32 (addr) - register const bfd_byte *addr; -{ - unsigned long v; - - v = (unsigned long) addr[0] << 24; - v |= (unsigned long) addr[1] << 16; - v |= (unsigned long) addr[2] << 8; - v |= (unsigned long) addr[3]; - return COERCE32 (v); -} - -bfd_signed_vma -bfd_getl_signed_32 (addr) - register const bfd_byte *addr; -{ - unsigned long v; - - v = (unsigned long) addr[0]; - v |= (unsigned long) addr[1] << 8; - v |= (unsigned long) addr[2] << 16; - v |= (unsigned long) addr[3] << 24; - return COERCE32 (v); -} - -bfd_vma -bfd_getb64 (addr) - register const bfd_byte *addr ATTRIBUTE_UNUSED; -{ -#ifdef BFD64 - bfd_vma low, high; - - high= ((((((((addr[0]) << 8) | - addr[1]) << 8) | - addr[2]) << 8) | - addr[3]) ); - - low = (((((((((bfd_vma)addr[4]) << 8) | - addr[5]) << 8) | - addr[6]) << 8) | - addr[7])); - - return high << 32 | low; -#else - BFD_FAIL(); - return 0; -#endif -} - -bfd_vma -bfd_getl64 (addr) - register const bfd_byte *addr ATTRIBUTE_UNUSED; -{ -#ifdef BFD64 - bfd_vma low, high; - high= (((((((addr[7] << 8) | - addr[6]) << 8) | - addr[5]) << 8) | - addr[4])); - - low = ((((((((bfd_vma)addr[3] << 8) | - addr[2]) << 8) | - addr[1]) << 8) | - addr[0]) ); - - return high << 32 | low; -#else - BFD_FAIL(); - return 0; -#endif - -} - -bfd_signed_vma -bfd_getb_signed_64 (addr) - register const bfd_byte *addr ATTRIBUTE_UNUSED; -{ -#ifdef BFD64 - bfd_vma low, high; - - high= ((((((((addr[0]) << 8) | - addr[1]) << 8) | - addr[2]) << 8) | - addr[3]) ); - - low = (((((((((bfd_vma)addr[4]) << 8) | - addr[5]) << 8) | - addr[6]) << 8) | - addr[7])); - - return COERCE64(high << 32 | low); -#else - BFD_FAIL(); - return 0; -#endif -} - -bfd_signed_vma -bfd_getl_signed_64 (addr) - register const bfd_byte *addr ATTRIBUTE_UNUSED; -{ -#ifdef BFD64 - bfd_vma low, high; - high= (((((((addr[7] << 8) | - addr[6]) << 8) | - addr[5]) << 8) | - addr[4])); - - low = ((((((((bfd_vma)addr[3] << 8) | - addr[2]) << 8) | - addr[1]) << 8) | - addr[0]) ); - - return COERCE64(high << 32 | low); -#else - BFD_FAIL(); - return 0; -#endif -} - -void -bfd_putb32 (data, addr) - bfd_vma data; - register bfd_byte *addr; -{ - addr[0] = (bfd_byte) (data >> 24); - addr[1] = (bfd_byte) (data >> 16); - addr[2] = (bfd_byte) (data >> 8); - addr[3] = (bfd_byte) data; -} - -void -bfd_putl32 (data, addr) - bfd_vma data; - register bfd_byte *addr; -{ - addr[0] = (bfd_byte) data; - addr[1] = (bfd_byte) (data >> 8); - addr[2] = (bfd_byte) (data >> 16); - addr[3] = (bfd_byte) (data >> 24); -} - -void -bfd_putb64 (data, addr) - bfd_vma data ATTRIBUTE_UNUSED; - register bfd_byte *addr ATTRIBUTE_UNUSED; -{ -#ifdef BFD64 - addr[0] = (bfd_byte) (data >> (7*8)); - addr[1] = (bfd_byte) (data >> (6*8)); - addr[2] = (bfd_byte) (data >> (5*8)); - addr[3] = (bfd_byte) (data >> (4*8)); - addr[4] = (bfd_byte) (data >> (3*8)); - addr[5] = (bfd_byte) (data >> (2*8)); - addr[6] = (bfd_byte) (data >> (1*8)); - addr[7] = (bfd_byte) (data >> (0*8)); -#else - BFD_FAIL(); -#endif -} - -void -bfd_putl64 (data, addr) - bfd_vma data ATTRIBUTE_UNUSED; - register bfd_byte *addr ATTRIBUTE_UNUSED; -{ -#ifdef BFD64 - addr[7] = (bfd_byte) (data >> (7*8)); - addr[6] = (bfd_byte) (data >> (6*8)); - addr[5] = (bfd_byte) (data >> (5*8)); - addr[4] = (bfd_byte) (data >> (4*8)); - addr[3] = (bfd_byte) (data >> (3*8)); - addr[2] = (bfd_byte) (data >> (2*8)); - addr[1] = (bfd_byte) (data >> (1*8)); - addr[0] = (bfd_byte) (data >> (0*8)); -#else - BFD_FAIL(); -#endif -} - -void -bfd_put_bits (data, addr, bits, big_p) - bfd_vma data; - bfd_byte *addr; - int bits; - boolean big_p; -{ - int i; - int bytes; - - if (bits % 8 != 0) - abort (); - - bytes = bits / 8; - for (i = 0; i < bytes; i++) - { - int index = big_p ? bytes - i - 1 : i; - - addr[index] = (bfd_byte) data; - data >>= 8; - } -} - -bfd_vma -bfd_get_bits (addr, bits, big_p) - bfd_byte *addr; - int bits; - boolean big_p; -{ - bfd_vma data; - int i; - int bytes; - - if (bits % 8 != 0) - abort (); - - data = 0; - bytes = bits / 8; - for (i = 0; i < bytes; i++) - { - int index = big_p ? i : bytes - i - 1; - - data = (data << 8) | addr[index]; - } - - return data; -} - -/* Default implementation */ - -boolean -_bfd_generic_get_section_contents (abfd, section, location, offset, count) - bfd *abfd; - sec_ptr section; - PTR location; - file_ptr offset; - bfd_size_type count; -{ - if (count == 0) - return true; - - if ((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 - 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 int -bfd_log2 (x) - bfd_vma x; -{ - unsigned int result = 0; - - while ((x = (x >> 1)) != 0) - ++result; - return result; -} - -boolean -bfd_generic_is_local_label_name (abfd, name) - bfd *abfd; - const char *name; -{ - char locals_prefix = (bfd_get_symbol_leading_char (abfd) == '_') ? 'L' : '.'; - - return (name[0] == locals_prefix); -} - -/* Can be used from / for bfd_merge_private_bfd_data to check that - endianness matches between input and output file. Returns - true for a match, otherwise returns false and emits an error. */ -boolean -_bfd_generic_verify_endian_match (ibfd, obfd) - bfd *ibfd; - bfd *obfd; -{ - if (ibfd->xvec->byteorder != obfd->xvec->byteorder - && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN - && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) - { - const char *msg; - - if (bfd_big_endian (ibfd)) - msg = _("%s: compiled for a big endian system and target is little endian"); - else - msg = _("%s: compiled for a little endian system and target is big endian"); - - (*_bfd_error_handler) (msg, bfd_get_filename (ibfd)); - - bfd_set_error (bfd_error_wrong_format); - return false; - } - - return true; -} |