/* Assorted BFD support routines, only used internally.
- Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 98, 1999
- Free Software Foundation, Inc.
+ Copyright (C) 1990-2021 Free Software Foundation, Inc.
Written by Cygnus Support.
-This file is part of BFD, the Binary File Descriptor library.
+ 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 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 3 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.
+ 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. */
+ 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., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
#ifndef HAVE_GETPAGESIZE
#define getpagesize() 2048
#endif
-static int real_read PARAMS ((PTR, size_t, size_t, FILE *));
-
/*
SECTION
+ Implementation details
+
+SUBSECTION
Internal functions
DESCRIPTION
completeness.
*/
+bool
+_bfd_bool_bfd_false (bfd *abfd ATTRIBUTE_UNUSED)
+{
+ return false;
+}
+
+bool
+_bfd_bool_bfd_asymbol_false (bfd *abfd ATTRIBUTE_UNUSED,
+ asymbol *sym ATTRIBUTE_UNUSED)
+{
+ return false;
+}
+
/* A routine which is used in target vectors for unsupported
operations. */
-/*ARGSUSED*/
-boolean
-bfd_false (ignore)
- bfd *ignore ATTRIBUTE_UNUSED;
+bool
+_bfd_bool_bfd_false_error (bfd *ignore ATTRIBUTE_UNUSED)
{
bfd_set_error (bfd_error_invalid_operation);
return false;
}
+bool
+_bfd_bool_bfd_link_false_error (bfd *abfd,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
+{
+ return _bfd_bool_bfd_false_error (abfd);
+}
+
/* A routine which is used in target vectors for supported operations
which do not actually do anything. */
-/*ARGSUSED*/
-boolean
-bfd_true (ignore)
- bfd *ignore ATTRIBUTE_UNUSED;
+bool
+_bfd_bool_bfd_true (bfd *ignore ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
+bool
+_bfd_bool_bfd_link_true (bfd *abfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
+bool
+_bfd_bool_bfd_bfd_true (bfd *ibfd ATTRIBUTE_UNUSED,
+ bfd *obfd ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
+bool
+_bfd_bool_bfd_uint_true (bfd *abfd ATTRIBUTE_UNUSED,
+ unsigned int flags ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
+bool
+_bfd_bool_bfd_asection_bfd_asection_true (bfd *ibfd ATTRIBUTE_UNUSED,
+ asection *isec ATTRIBUTE_UNUSED,
+ bfd *obfd ATTRIBUTE_UNUSED,
+ asection *osec ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
+bool
+_bfd_bool_bfd_asymbol_bfd_asymbol_true (bfd *ibfd ATTRIBUTE_UNUSED,
+ asymbol *isym ATTRIBUTE_UNUSED,
+ bfd *obfd ATTRIBUTE_UNUSED,
+ asymbol *osym ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
+bool
+_bfd_bool_bfd_ptr_true (bfd *abfd ATTRIBUTE_UNUSED,
+ void *ptr 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 ATTRIBUTE_UNUSED;
+void *
+_bfd_ptr_bfd_null_error (bfd *ignore ATTRIBUTE_UNUSED)
{
bfd_set_error (bfd_error_invalid_operation);
return NULL;
}
-/*ARGSUSED*/
-int
-bfd_0 (ignore)
- bfd *ignore ATTRIBUTE_UNUSED;
+int
+_bfd_int_bfd_0 (bfd *ignore ATTRIBUTE_UNUSED)
{
return 0;
}
-/*ARGSUSED*/
-unsigned int
-bfd_0u (ignore)
- bfd *ignore ATTRIBUTE_UNUSED;
+unsigned int
+_bfd_uint_bfd_0 (bfd *ignore ATTRIBUTE_UNUSED)
{
return 0;
}
-/*ARGUSED*/
long
-bfd_0l (ignore)
- bfd *ignore ATTRIBUTE_UNUSED;
+_bfd_long_bfd_0 (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_long_bfd_n1_error (bfd *ignore_abfd ATTRIBUTE_UNUSED)
{
bfd_set_error (bfd_error_invalid_operation);
return -1;
}
-/*ARGSUSED*/
-void
-bfd_void (ignore)
- bfd *ignore ATTRIBUTE_UNUSED;
+void
+_bfd_void_bfd (bfd *ignore ATTRIBUTE_UNUSED)
+{
+}
+
+void
+_bfd_void_bfd_link (bfd *abfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
+{
+}
+
+void
+_bfd_void_bfd_asection (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec ATTRIBUTE_UNUSED)
+{
+}
+
+long
+_bfd_norelocs_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec ATTRIBUTE_UNUSED)
+{
+ return sizeof (arelent *);
+}
+
+long
+_bfd_norelocs_canonicalize_reloc (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec ATTRIBUTE_UNUSED,
+ arelent **relptr,
+ asymbol **symbols ATTRIBUTE_UNUSED)
+{
+ *relptr = NULL;
+ return 0;
+}
+
+void
+_bfd_norelocs_set_reloc (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec ATTRIBUTE_UNUSED,
+ arelent **relptr ATTRIBUTE_UNUSED,
+ unsigned int count ATTRIBUTE_UNUSED)
{
+ /* Do nothing. */
}
-/*ARGSUSED*/
-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;
+bool
+_bfd_nocore_core_file_matches_executable_p
+ (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. */
-/*ARGSUSED*/
char *
-_bfd_nocore_core_file_failing_command (ignore_abfd)
- bfd *ignore_abfd ATTRIBUTE_UNUSED;
+_bfd_nocore_core_file_failing_command (bfd *ignore_abfd ATTRIBUTE_UNUSED)
{
bfd_set_error (bfd_error_invalid_operation);
- return (char *)NULL;
+ return NULL;
}
/* Routine to handle core_file_failing_signal entry point for targets
without core file support. */
-/*ARGSUSED*/
int
-_bfd_nocore_core_file_failing_signal (ignore_abfd)
- bfd *ignore_abfd ATTRIBUTE_UNUSED;
+_bfd_nocore_core_file_failing_signal (bfd *ignore_abfd ATTRIBUTE_UNUSED)
{
bfd_set_error (bfd_error_invalid_operation);
return 0;
}
-/*ARGSUSED*/
-const bfd_target *
-_bfd_dummy_target (ignore_abfd)
- bfd *ignore_abfd ATTRIBUTE_UNUSED;
+/* Routine to handle the core_file_pid entry point for targets without
+ core file support. */
+
+int
+_bfd_nocore_core_file_pid (bfd *ignore_abfd ATTRIBUTE_UNUSED)
{
- bfd_set_error (bfd_error_wrong_format);
+ bfd_set_error (bfd_error_invalid_operation);
return 0;
}
-\f
-/* Allocate memory using malloc. */
-PTR
-bfd_malloc (size)
- size_t size;
+bfd_cleanup
+_bfd_dummy_target (bfd *ignore_abfd ATTRIBUTE_UNUSED)
{
- PTR ptr;
-
- ptr = (PTR) malloc (size);
- if (ptr == NULL && size != 0)
- bfd_set_error (bfd_error_no_memory);
- return ptr;
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
}
+\f
+/* Allocate memory using malloc. */
-/* 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);
+#ifndef SSIZE_MAX
+#define SSIZE_MAX ((size_t) -1 >> 1)
+#endif
- return ret;
-}
+/*
+INTERNAL_FUNCTION
+ bfd_malloc
-/* Allocate memory using malloc and clear it. */
+SYNOPSIS
+ extern void * bfd_malloc (bfd_size_type SIZE) ATTRIBUTE_HIDDEN;
-PTR
-bfd_zmalloc (size)
- size_t size;
+DESCRIPTION
+ Returns a pointer to an allocated block of memory that is at least
+ SIZE bytes long. If SIZE is 0 then it will be treated as if it were
+ 1. If SIZE is too big then NULL will be returned.
+
+ Returns NULL upon error and sets bfd_error.
+*/
+void *
+bfd_malloc (bfd_size_type size)
{
- PTR ptr;
-
- ptr = (PTR) malloc (size);
+ void *ptr;
+ size_t sz = (size_t) size;
- if (size != 0)
+ if (size != sz
+ /* This is to pacify memory checkers like valgrind. */
+ || sz > SSIZE_MAX)
{
- if (ptr == NULL)
- bfd_set_error (bfd_error_no_memory);
- else
- memset (ptr, 0, size);
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
}
+ ptr = malloc (sz ? sz : 1);
+ if (ptr == NULL)
+ bfd_set_error (bfd_error_no_memory);
+
return ptr;
}
-\f
-/* 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;
- }
+/*
+INTERNAL_FUNCTION
+ bfd_realloc
- nread = real_read (ptr, 1, (size_t)(size*nitems), bfd_cache_lookup(abfd));
- if (nread > 0)
- abfd->where += nread;
+SYNOPSIS
+ extern void * bfd_realloc (void * MEM, bfd_size_type SIZE) ATTRIBUTE_HIDDEN;
- /* Set bfd_error if we did not read as much data as we expected.
+DESCRIPTION
+ Returns a pointer to an allocated block of memory that is at least
+ SIZE bytes long. If SIZE is 0 then it will be treated as if it were
+ 1. If SIZE is too big then NULL will be returned.
+
+ If MEM is not NULL then it must point to an allocated block of memory.
+ If this block is large enough then MEM may be used as the return
+ value for this function, but this is not guaranteed.
+
+ If MEM is not returned then the first N bytes in the returned block
+ will be identical to the first N bytes in region pointed to by MEM,
+ where N is the lessor of SIZE and the length of the region of memory
+ currently addressed by MEM.
+
+ Returns NULL upon error and sets bfd_error.
+*/
+void *
+bfd_realloc (void *ptr, bfd_size_type size)
+{
+ void *ret;
+ size_t sz = (size_t) size;
- If the read failed due to an error set the bfd_error_system_call,
- else set bfd_error_file_truncated.
+ if (ptr == NULL)
+ return bfd_malloc (size);
- 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 (size != sz
+ /* This is to pacify memory checkers like valgrind. */
+ || sz > SSIZE_MAX)
{
- if (ferror (bfd_cache_lookup (abfd)))
- bfd_set_error (bfd_error_system_call);
- else
- bfd_set_error (bfd_error_file_truncated);
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
}
- return nread;
-}
+ /* The behaviour of realloc(0) is implementation defined,
+ but for this function we always allocate memory. */
+ ret = realloc (ptr, sz ? sz : 1);
-/* 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 */
-};
+ if (ret == NULL)
+ bfd_set_error (bfd_error_no_memory);
-void
-bfd_init_window (windowp)
- bfd_window *windowp;
-{
- windowp->data = 0;
- windowp->i = 0;
- windowp->size = 0;
+ return ret;
}
-\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
+/*
+INTERNAL_FUNCTION
+ bfd_realloc_or_free
-#ifndef MAP_FILE
-#define MAP_FILE 0
-#endif
+SYNOPSIS
+ extern void * bfd_realloc_or_free (void * MEM, bfd_size_type SIZE) ATTRIBUTE_HIDDEN;
-static int debug_windows;
+DESCRIPTION
+ Returns a pointer to an allocated block of memory that is at least
+ SIZE bytes long. If SIZE is 0 then no memory will be allocated,
+ MEM will be freed, and NULL will be returned. This will not cause
+ bfd_error to be set.
+
+ If SIZE is too big then NULL will be returned and bfd_error will be
+ set.
+
+ If MEM is not NULL then it must point to an allocated block of memory.
+ If this block is large enough then MEM may be used as the return
+ value for this function, but this is not guaranteed.
+
+ If MEM is not returned then the first N bytes in the returned block
+ will be identical to the first N bytes in region pointed to by MEM,
+ where N is the lessor of SIZE and the length of the region of memory
+ currently addressed by MEM.
+*/
+void *
+bfd_realloc_or_free (void *ptr, bfd_size_type size)
+{
+ void *ret;
-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)
+ /* The behaviour of realloc(0) is implementation defined, but
+ for this function we treat it is always freeing the memory. */
+ if (size == 0)
{
-#ifdef HAVE_MMAP
- munmap (i->data, i->size);
- goto no_free;
-#else
- abort ();
-#endif
+ free (ptr);
+ return NULL;
}
-#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 ();
+
+ ret = bfd_realloc (ptr, size);
+ if (ret == NULL)
+ free (ptr);
- 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;
+ return ret;
+}
- /* 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
+/*
+INTERNAL_FUNCTION
+ bfd_zmalloc
-#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;
-}
+SYNOPSIS
+ extern void * bfd_zmalloc (bfd_size_type SIZE) ATTRIBUTE_HIDDEN;
-#endif /* USE_MMAP */
-\f
-bfd_size_type
-bfd_write (ptr, size, nitems, abfd)
- CONST PTR ptr;
- bfd_size_type size;
- bfd_size_type nitems;
- bfd *abfd;
+DESCRIPTION
+ Returns a pointer to an allocated block of memory that is at least
+ SIZE bytes long. If SIZE is 0 then it will be treated as if it were
+ 1. If SIZE is too big then NULL will be returned.
+
+ Returns NULL upon error and sets bfd_error.
+
+ If NULL is not returned then the allocated block of memory will
+ have been cleared.
+*/
+void *
+bfd_zmalloc (bfd_size_type size)
{
- long nwrote;
+ void *ptr = bfd_malloc (size);
- 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;
- }
+ if (ptr != NULL)
+ memset (ptr, 0, size ? (size_t) size : 1);
- 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;
+ return ptr;
}
/*
bfd_write_bigendian_4byte_int
SYNOPSIS
- void bfd_write_bigendian_4byte_int(bfd *abfd, int i);
+ bool bfd_write_bigendian_4byte_int (bfd *, unsigned int);
DESCRIPTION
Write a 4 byte integer @var{i} to the output BFD @var{abfd}, in big
archives.
*/
-void
-bfd_write_bigendian_4byte_int (abfd, i)
- bfd *abfd;
- int i;
+bool
+bfd_write_bigendian_4byte_int (bfd *abfd, unsigned 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));
+ bfd_putb32 ((bfd_vma) i, buffer);
+ return bfd_bwrite (buffer, (bfd_size_type) 4, abfd) == 4;
}
-/* 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)
- {
- 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;
-}
\f
/** The do-it-yourself (byte) sex-change kit */
/* 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. */
+ functions in swap.h #ifdef __GNUC__.
+ Gprof them later and find out. */
/*
FUNCTION
.{* Byte swapping macros for user section data. *}
.
.#define bfd_put_8(abfd, val, ptr) \
-. ((void) (*((unsigned char *)(ptr)) = (unsigned char)(val)))
+. ((void) (*((unsigned char *) (ptr)) = (val) & 0xff))
.#define bfd_put_signed_8 \
-. bfd_put_8
+. bfd_put_8
.#define bfd_get_8(abfd, ptr) \
-. (*(unsigned char *)(ptr))
+. ((bfd_vma) *(const unsigned char *) (ptr) & 0xff)
.#define bfd_get_signed_8(abfd, ptr) \
-. ((*(unsigned char *)(ptr) ^ 0x80) - 0x80)
+. ((((bfd_signed_vma) *(const unsigned char *) (ptr) & 0xff) ^ 0x80) - 0x80)
.
.#define bfd_put_16(abfd, val, ptr) \
-. BFD_SEND(abfd, bfd_putx16, ((val),(ptr)))
+. BFD_SEND (abfd, bfd_putx16, ((val),(ptr)))
.#define bfd_put_signed_16 \
-. bfd_put_16
+. bfd_put_16
.#define bfd_get_16(abfd, ptr) \
-. BFD_SEND(abfd, bfd_getx16, (ptr))
+. BFD_SEND (abfd, bfd_getx16, (ptr))
.#define bfd_get_signed_16(abfd, ptr) \
-. BFD_SEND (abfd, bfd_getx_signed_16, (ptr))
+. BFD_SEND (abfd, bfd_getx_signed_16, (ptr))
+.
+.#define bfd_put_24(abfd, val, ptr) \
+. do \
+. if (bfd_big_endian (abfd)) \
+. bfd_putb24 ((val), (ptr)); \
+. else \
+. bfd_putl24 ((val), (ptr)); \
+. while (0)
+.
+.bfd_vma bfd_getb24 (const void *p);
+.bfd_vma bfd_getl24 (const void *p);
+.
+.#define bfd_get_24(abfd, ptr) \
+. (bfd_big_endian (abfd) ? bfd_getb24 (ptr) : bfd_getl24 (ptr))
.
.#define bfd_put_32(abfd, val, ptr) \
-. BFD_SEND(abfd, bfd_putx32, ((val),(ptr)))
+. BFD_SEND (abfd, bfd_putx32, ((val),(ptr)))
.#define bfd_put_signed_32 \
-. bfd_put_32
+. bfd_put_32
.#define bfd_get_32(abfd, ptr) \
-. BFD_SEND(abfd, bfd_getx32, (ptr))
+. BFD_SEND (abfd, bfd_getx32, (ptr))
.#define bfd_get_signed_32(abfd, ptr) \
-. BFD_SEND(abfd, bfd_getx_signed_32, (ptr))
+. BFD_SEND (abfd, bfd_getx_signed_32, (ptr))
.
.#define bfd_put_64(abfd, val, ptr) \
-. BFD_SEND(abfd, bfd_putx64, ((val), (ptr)))
+. BFD_SEND (abfd, bfd_putx64, ((val), (ptr)))
.#define bfd_put_signed_64 \
-. bfd_put_64
+. bfd_put_64
.#define bfd_get_64(abfd, ptr) \
-. BFD_SEND(abfd, bfd_getx64, (ptr))
+. BFD_SEND (abfd, bfd_getx64, (ptr))
.#define bfd_get_signed_64(abfd, ptr) \
-. BFD_SEND(abfd, bfd_getx_signed_64, (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_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))
+.#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
DESCRIPTION
These macros have the same function as their <<bfd_get_x>>
- bretheren, except that they are used for removing information
+ brethren, 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)
+. bfd_put_8 (abfd, val, ptr)
.#define bfd_h_put_signed_8(abfd, val, ptr) \
-. bfd_put_8 (abfd, val, ptr)
+. bfd_put_8 (abfd, val, ptr)
.#define bfd_h_get_8(abfd, ptr) \
-. bfd_get_8 (abfd, ptr)
+. bfd_get_8 (abfd, ptr)
.#define bfd_h_get_signed_8(abfd, ptr) \
-. bfd_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))
+. BFD_SEND (abfd, bfd_h_putx16, (val, ptr))
.#define bfd_h_put_signed_16 \
-. bfd_h_put_16
+. bfd_h_put_16
.#define bfd_h_get_16(abfd, ptr) \
-. BFD_SEND(abfd, bfd_h_getx16,(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))
+. 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))
+. BFD_SEND (abfd, bfd_h_putx32, (val, ptr))
.#define bfd_h_put_signed_32 \
-. bfd_h_put_32
+. bfd_h_put_32
.#define bfd_h_get_32(abfd, ptr) \
-. BFD_SEND(abfd, bfd_h_getx32,(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))
+. 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))
+. BFD_SEND (abfd, bfd_h_putx64, (val, ptr))
.#define bfd_h_put_signed_64 \
-. bfd_h_put_64
+. bfd_h_put_64
.#define bfd_h_get_64(abfd, ptr) \
-. BFD_SEND(abfd, bfd_h_getx64,(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))
+. BFD_SEND (abfd, bfd_h_getx_signed_64, (ptr))
.
-*/
+.{* Aliases for the above, which should eventually go away. *}
+.
+.#define H_PUT_64 bfd_h_put_64
+.#define H_PUT_32 bfd_h_put_32
+.#define H_PUT_16 bfd_h_put_16
+.#define H_PUT_8 bfd_h_put_8
+.#define H_PUT_S64 bfd_h_put_signed_64
+.#define H_PUT_S32 bfd_h_put_signed_32
+.#define H_PUT_S16 bfd_h_put_signed_16
+.#define H_PUT_S8 bfd_h_put_signed_8
+.#define H_GET_64 bfd_h_get_64
+.#define H_GET_32 bfd_h_get_32
+.#define H_GET_16 bfd_h_get_16
+.#define H_GET_8 bfd_h_get_8
+.#define H_GET_S64 bfd_h_get_signed_64
+.#define H_GET_S32 bfd_h_get_signed_32
+.#define H_GET_S16 bfd_h_get_signed_16
+.#define H_GET_S8 bfd_h_get_signed_8
+.
+.*/
/* 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 COERCE16(x) (((bfd_vma) (x) ^ 0x8000) - 0x8000)
+#define COERCE32(x) (((bfd_vma) (x) ^ 0x80000000) - 0x80000000)
#define COERCE64(x) \
- (((bfd_signed_vma) (x) ^ EIGHT_GAZILLION) - EIGHT_GAZILLION)
+ (((bfd_uint64_t) (x) ^ ((bfd_uint64_t) 1 << 63)) - ((bfd_uint64_t) 1 << 63))
bfd_vma
-bfd_getb16 (addr)
- register const bfd_byte *addr;
+bfd_getb16 (const void *p)
{
+ const bfd_byte *addr = (const bfd_byte *) p;
return (addr[0] << 8) | addr[1];
}
bfd_vma
-bfd_getl16 (addr)
- register const bfd_byte *addr;
+bfd_getl16 (const void *p)
{
+ const bfd_byte *addr = (const bfd_byte *) p;
return (addr[1] << 8) | addr[0];
}
bfd_signed_vma
-bfd_getb_signed_16 (addr)
- register const bfd_byte *addr;
+bfd_getb_signed_16 (const void *p)
{
- return COERCE16((addr[0] << 8) | addr[1]);
+ const bfd_byte *addr = (const bfd_byte *) p;
+ return COERCE16 ((addr[0] << 8) | addr[1]);
}
bfd_signed_vma
-bfd_getl_signed_16 (addr)
- register const bfd_byte *addr;
+bfd_getl_signed_16 (const void *p)
+{
+ const bfd_byte *addr = (const bfd_byte *) p;
+ return COERCE16 ((addr[1] << 8) | addr[0]);
+}
+
+void
+bfd_putb16 (bfd_vma data, void *p)
{
- return COERCE16((addr[1] << 8) | addr[0]);
+ bfd_byte *addr = (bfd_byte *) p;
+ addr[0] = (data >> 8) & 0xff;
+ addr[1] = data & 0xff;
}
void
-bfd_putb16 (data, addr)
- bfd_vma data;
- register bfd_byte *addr;
+bfd_putl16 (bfd_vma data, void *p)
{
- addr[0] = (bfd_byte)(data >> 8);
- addr[1] = (bfd_byte )data;
+ bfd_byte *addr = (bfd_byte *) p;
+ addr[0] = data & 0xff;
+ addr[1] = (data >> 8) & 0xff;
}
void
-bfd_putl16 (data, addr)
- bfd_vma data;
- register bfd_byte *addr;
+bfd_putb24 (bfd_vma data, void *p)
+{
+ bfd_byte *addr = (bfd_byte *) p;
+ addr[0] = (data >> 16) & 0xff;
+ addr[1] = (data >> 8) & 0xff;
+ addr[2] = data & 0xff;
+}
+
+void
+bfd_putl24 (bfd_vma data, void *p)
+{
+ bfd_byte *addr = (bfd_byte *) p;
+ addr[0] = data & 0xff;
+ addr[1] = (data >> 8) & 0xff;
+ addr[2] = (data >> 16) & 0xff;
+}
+
+bfd_vma
+bfd_getb24 (const void *p)
+{
+ const bfd_byte *addr = (const bfd_byte *) p;
+ unsigned long v;
+
+ v = (unsigned long) addr[0] << 16;
+ v |= (unsigned long) addr[1] << 8;
+ v |= (unsigned long) addr[2];
+ return v;
+}
+
+bfd_vma
+bfd_getl24 (const void *p)
{
- addr[0] = (bfd_byte )data;
- addr[1] = (bfd_byte)(data >> 8);
+ const bfd_byte *addr = (const bfd_byte *) p;
+ unsigned long v;
+
+ v = (unsigned long) addr[0];
+ v |= (unsigned long) addr[1] << 8;
+ v |= (unsigned long) addr[2] << 16;
+ return v;
}
bfd_vma
-bfd_getb32 (addr)
- register const bfd_byte *addr;
+bfd_getb32 (const void *p)
{
+ const bfd_byte *addr = (const bfd_byte *) p;
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;
+ return v;
}
bfd_vma
-bfd_getl32 (addr)
- register const bfd_byte *addr;
+bfd_getl32 (const void *p)
{
+ const bfd_byte *addr = (const bfd_byte *) p;
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;
+ return v;
}
bfd_signed_vma
-bfd_getb_signed_32 (addr)
- register const bfd_byte *addr;
+bfd_getb_signed_32 (const void *p)
{
+ const bfd_byte *addr = (const bfd_byte *) p;
unsigned long v;
v = (unsigned long) addr[0] << 24;
}
bfd_signed_vma
-bfd_getl_signed_32 (addr)
- register const bfd_byte *addr;
+bfd_getl_signed_32 (const void *p)
{
+ const bfd_byte *addr = (const bfd_byte *) p;
unsigned long v;
v = (unsigned long) addr[0];
return COERCE32 (v);
}
-bfd_vma
-bfd_getb64 (addr)
- register const bfd_byte *addr ATTRIBUTE_UNUSED;
+bfd_uint64_t
+bfd_getb64 (const void *p 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;
+#ifdef BFD_HOST_64_BIT
+ const bfd_byte *addr = (const bfd_byte *) p;
+ bfd_uint64_t v;
+
+ v = addr[0]; v <<= 8;
+ v |= addr[1]; v <<= 8;
+ v |= addr[2]; v <<= 8;
+ v |= addr[3]; v <<= 8;
+ v |= addr[4]; v <<= 8;
+ v |= addr[5]; v <<= 8;
+ v |= addr[6]; v <<= 8;
+ v |= addr[7];
+
+ return v;
#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;
+bfd_uint64_t
+bfd_getl64 (const void *p ATTRIBUTE_UNUSED)
+{
+#ifdef BFD_HOST_64_BIT
+ const bfd_byte *addr = (const bfd_byte *) p;
+ bfd_uint64_t v;
+
+ v = addr[7]; v <<= 8;
+ v |= addr[6]; v <<= 8;
+ v |= addr[5]; v <<= 8;
+ v |= addr[4]; v <<= 8;
+ v |= addr[3]; v <<= 8;
+ v |= addr[2]; v <<= 8;
+ v |= addr[1]; v <<= 8;
+ v |= addr[0];
+
+ return v;
#else
BFD_FAIL();
return 0;
}
-bfd_signed_vma
-bfd_getb_signed_64 (addr)
- register const bfd_byte *addr ATTRIBUTE_UNUSED;
+bfd_int64_t
+bfd_getb_signed_64 (const void *p 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);
+#ifdef BFD_HOST_64_BIT
+ const bfd_byte *addr = (const bfd_byte *) p;
+ bfd_uint64_t v;
+
+ v = addr[0]; v <<= 8;
+ v |= addr[1]; v <<= 8;
+ v |= addr[2]; v <<= 8;
+ v |= addr[3]; v <<= 8;
+ v |= addr[4]; v <<= 8;
+ v |= addr[5]; v <<= 8;
+ v |= addr[6]; v <<= 8;
+ v |= addr[7];
+
+ return COERCE64 (v);
#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);
+bfd_int64_t
+bfd_getl_signed_64 (const void *p ATTRIBUTE_UNUSED)
+{
+#ifdef BFD_HOST_64_BIT
+ const bfd_byte *addr = (const bfd_byte *) p;
+ bfd_uint64_t v;
+
+ v = addr[7]; v <<= 8;
+ v |= addr[6]; v <<= 8;
+ v |= addr[5]; v <<= 8;
+ v |= addr[4]; v <<= 8;
+ v |= addr[3]; v <<= 8;
+ v |= addr[2]; v <<= 8;
+ v |= addr[1]; v <<= 8;
+ v |= addr[0];
+
+ return COERCE64 (v);
#else
BFD_FAIL();
return 0;
}
void
-bfd_putb32 (data, addr)
- bfd_vma data;
- register bfd_byte *addr;
+bfd_putb32 (bfd_vma data, void *p)
{
- addr[0] = (bfd_byte)(data >> 24);
- addr[1] = (bfd_byte)(data >> 16);
- addr[2] = (bfd_byte)(data >> 8);
- addr[3] = (bfd_byte)data;
+ bfd_byte *addr = (bfd_byte *) p;
+ addr[0] = (data >> 24) & 0xff;
+ addr[1] = (data >> 16) & 0xff;
+ addr[2] = (data >> 8) & 0xff;
+ addr[3] = data & 0xff;
}
void
-bfd_putl32 (data, addr)
- bfd_vma data;
- register bfd_byte *addr;
+bfd_putl32 (bfd_vma data, void *p)
{
- addr[0] = (bfd_byte)data;
- addr[1] = (bfd_byte)(data >> 8);
- addr[2] = (bfd_byte)(data >> 16);
- addr[3] = (bfd_byte)(data >> 24);
+ bfd_byte *addr = (bfd_byte *) p;
+ addr[0] = data & 0xff;
+ addr[1] = (data >> 8) & 0xff;
+ addr[2] = (data >> 16) & 0xff;
+ addr[3] = (data >> 24) & 0xff;
}
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));
+bfd_putb64 (bfd_uint64_t data ATTRIBUTE_UNUSED, void *p ATTRIBUTE_UNUSED)
+{
+#ifdef BFD_HOST_64_BIT
+ bfd_byte *addr = (bfd_byte *) p;
+ addr[0] = (data >> (7*8)) & 0xff;
+ addr[1] = (data >> (6*8)) & 0xff;
+ addr[2] = (data >> (5*8)) & 0xff;
+ addr[3] = (data >> (4*8)) & 0xff;
+ addr[4] = (data >> (3*8)) & 0xff;
+ addr[5] = (data >> (2*8)) & 0xff;
+ addr[6] = (data >> (1*8)) & 0xff;
+ addr[7] = (data >> (0*8)) & 0xff;
#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));
+bfd_putl64 (bfd_uint64_t data ATTRIBUTE_UNUSED, void *p ATTRIBUTE_UNUSED)
+{
+#ifdef BFD_HOST_64_BIT
+ bfd_byte *addr = (bfd_byte *) p;
+ addr[7] = (data >> (7*8)) & 0xff;
+ addr[6] = (data >> (6*8)) & 0xff;
+ addr[5] = (data >> (5*8)) & 0xff;
+ addr[4] = (data >> (4*8)) & 0xff;
+ addr[3] = (data >> (3*8)) & 0xff;
+ addr[2] = (data >> (2*8)) & 0xff;
+ addr[1] = (data >> (1*8)) & 0xff;
+ addr[0] = (data >> (0*8)) & 0xff;
#else
BFD_FAIL();
#endif
}
+
+void
+bfd_put_bits (bfd_uint64_t data, void *p, int bits, bool big_p)
+{
+ bfd_byte *addr = (bfd_byte *) p;
+ int i;
+ int bytes;
+
+ if (bits % 8 != 0)
+ abort ();
+
+ bytes = bits / 8;
+ for (i = 0; i < bytes; i++)
+ {
+ int addr_index = big_p ? bytes - i - 1 : i;
+
+ addr[addr_index] = data & 0xff;
+ data >>= 8;
+ }
+}
+
+bfd_uint64_t
+bfd_get_bits (const void *p, int bits, bool big_p)
+{
+ const bfd_byte *addr = (const bfd_byte *) p;
+ bfd_uint64_t data;
+ int i;
+ int bytes;
+
+ if (bits % 8 != 0)
+ abort ();
+
+ data = 0;
+ bytes = bits / 8;
+ for (i = 0; i < bytes; i++)
+ {
+ int addr_index = big_p ? i : bytes - i - 1;
+
+ data = (data << 8) | addr[addr_index];
+ }
+
+ return data;
+}
\f
/* 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;
+bool
+_bfd_generic_get_section_contents (bfd *abfd,
+ sec_ptr section,
+ void *location,
+ file_ptr offset,
+ bfd_size_type count)
{
+ bfd_size_type sz;
if (count == 0)
return true;
- if ((bfd_size_type) (offset + count) > section->_raw_size)
+ if (section->compress_status != COMPRESS_SECTION_NONE)
+ {
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: unable to get decompressed section %pA"),
+ abfd, section);
+ bfd_set_error (bfd_error_invalid_operation);
+ return false;
+ }
+
+ /* We do allow reading of a section after bfd_final_link has
+ written the contents out to disk. In that situation, rawsize is
+ just a stale version of size, so ignore it. Otherwise we must be
+ reading an input section, where rawsize, if different to size,
+ is the on-disk size. */
+ if (abfd->direction != write_direction && section->rawsize != 0)
+ sz = section->rawsize;
+ else
+ sz = section->size;
+ if (offset + count < count
+ || offset + count > sz
+ || (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive)
+ && ((ufile_ptr) section->filepos + offset + count
+ > arelt_size (abfd))))
{
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)
+ || bfd_bread (location, 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;
+bool
+_bfd_generic_get_section_contents_in_window
+ (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
+ bfd_size_type sz;
+
if (count == 0)
return true;
- if (abfd->xvec->_bfd_get_section_contents != _bfd_generic_get_section_contents)
+ 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
/* @@ 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));
+ w->i = bfd_zmalloc (sizeof (bfd_window_internal));
if (w->i == NULL)
return false;
- w->i->data = (PTR) bfd_malloc ((size_t) count);
+ w->i->data = bfd_malloc (count);
if (w->i->data == NULL)
{
free (w->i);
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))
+ if (abfd->direction != write_direction && section->rawsize != 0)
+ sz = section->rawsize;
+ else
+ sz = section->size;
+ if (offset + count < count
+ || offset + count > sz
+ || (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive)
+ && ((ufile_ptr) section->filepos + offset + count
+ > arelt_size (abfd)))
+ || ! bfd_get_file_window (abfd, section->filepos + offset, count, w,
+ true))
return false;
return true;
#else
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;
+bool
+_bfd_generic_set_section_contents (bfd *abfd,
+ sec_ptr section,
+ const void *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)
+ if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
+ || bfd_bwrite (location, count, abfd) != count)
return false;
return true;
bfd_log2
SYNOPSIS
- unsigned int bfd_log2(bfd_vma x);
+ 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.
+ @var{x} of 1025 returns 11. A @var{x} of 0 returns 0.
*/
unsigned int
-bfd_log2 (x)
- bfd_vma x;
+bfd_log2 (bfd_vma x)
{
unsigned int result = 0;
- while ((x = (x >> 1)) != 0)
+ if (x <= 1)
+ return result;
+ --x;
+ do
++result;
+ while ((x >>= 1) != 0);
return result;
}
-boolean
-bfd_generic_is_local_label_name (abfd, name)
- bfd *abfd;
- const char *name;
+bool
+bfd_generic_is_local_label_name (bfd *abfd, const char *name)
{
char locals_prefix = (bfd_get_symbol_leading_char (abfd) == '_') ? 'L' : '.';
- return (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;
+/* Give a warning at runtime if someone compiles code which calls
+ old routines. */
+
+void
+_bfd_warn_deprecated (const char *what,
+ const char *file,
+ int line,
+ const char *func)
{
- if (ibfd->xvec->byteorder != obfd->xvec->byteorder
- && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
- && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
- {
- const char *msg;
+ /* Poor man's tracking of functions we've already warned about. */
+ static size_t mask = 0;
- if (bfd_big_endian (ibfd))
- msg = _("%s: compiled for a big endian system and target is little endian");
+ if (~(size_t) func & ~mask)
+ {
+ fflush (stdout);
+ /* Note: separate sentences in order to allow
+ for translation into other languages. */
+ if (func)
+ /* xgettext:c-format */
+ fprintf (stderr, _("Deprecated %s called at %s line %d in %s\n"),
+ what, file, line, func);
else
- msg = _("%s: compiled for a little endian system and target is big endian");
+ fprintf (stderr, _("Deprecated %s called\n"), what);
+ fflush (stderr);
+ mask |= ~(size_t) func;
+ }
+}
- (*_bfd_error_handler) (msg, bfd_get_filename (ibfd));
+/* Helper function for reading uleb128 encoded data. */
- bfd_set_error (bfd_error_wrong_format);
- return false;
+bfd_vma
+_bfd_read_unsigned_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_byte *buf,
+ unsigned int *bytes_read_ptr)
+{
+ bfd_vma result;
+ unsigned int num_read;
+ unsigned int shift;
+ unsigned char byte;
+
+ result = 0;
+ shift = 0;
+ num_read = 0;
+ do
+ {
+ byte = bfd_get_8 (abfd, buf);
+ buf++;
+ num_read++;
+ if (shift < 8 * sizeof (result))
+ {
+ result |= (((bfd_vma) byte & 0x7f) << shift);
+ shift += 7;
+ }
+ }
+ while (byte & 0x80);
+ *bytes_read_ptr = num_read;
+ return result;
+}
+
+/* Read in a LEB128 encoded value from ABFD starting at DATA.
+ If SIGN is true, return a signed LEB128 value.
+ If LENGTH_RETURN is not NULL, return in it the number of bytes read.
+ No bytes will be read at address END or beyond. */
+
+bfd_vma
+_bfd_safe_read_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_byte *data,
+ unsigned int *length_return,
+ bool sign,
+ const bfd_byte * const end)
+{
+ bfd_vma result = 0;
+ unsigned int num_read = 0;
+ unsigned int shift = 0;
+ unsigned char byte = 0;
+
+ while (data < end)
+ {
+ byte = bfd_get_8 (abfd, data);
+ data++;
+ num_read++;
+ if (shift < 8 * sizeof (result))
+ {
+ result |= ((bfd_vma) (byte & 0x7f)) << shift;
+ shift += 7;
+ }
+ if ((byte & 0x80) == 0)
+ break;
}
+ if (length_return != NULL)
+ *length_return = num_read;
+
+ if (sign && (shift < 8 * sizeof (result)) && (byte & 0x40))
+ result |= -((bfd_vma) 1 << shift);
+
+ return result;
+}
+
+/* Helper function for reading sleb128 encoded data. */
+
+bfd_signed_vma
+_bfd_read_signed_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_byte *buf,
+ unsigned int *bytes_read_ptr)
+{
+ bfd_vma result;
+ unsigned int shift;
+ unsigned int num_read;
+ unsigned char byte;
+
+ result = 0;
+ shift = 0;
+ num_read = 0;
+ do
+ {
+ byte = bfd_get_8 (abfd, buf);
+ buf ++;
+ num_read ++;
+ if (shift < 8 * sizeof (result))
+ {
+ result |= (((bfd_vma) byte & 0x7f) << shift);
+ shift += 7;
+ }
+ }
+ while (byte & 0x80);
+ if (shift < 8 * sizeof (result) && (byte & 0x40))
+ result |= (((bfd_vma) -1) << shift);
+ *bytes_read_ptr = num_read;
+ return result;
+}
+
+/* Write VAL in uleb128 format to P.
+ END indicates the last byte of allocated space for the uleb128 value to fit
+ in.
+ Return a pointer to the byte following the last byte that was written, or
+ NULL if the uleb128 value does not fit in the allocated space between P and
+ END. */
+bfd_byte *
+_bfd_write_unsigned_leb128 (bfd_byte *p, bfd_byte *end, bfd_vma val)
+{
+ bfd_byte c;
+ do
+ {
+ if (p > end)
+ return NULL;
+ c = val & 0x7f;
+ val >>= 7;
+ if (val)
+ c |= 0x80;
+ *(p++) = c;
+ }
+ while (val);
+ return p;
+}
+
+bool
+_bfd_generic_init_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
+ asection *isec ATTRIBUTE_UNUSED,
+ bfd *obfd ATTRIBUTE_UNUSED,
+ asection *osec ATTRIBUTE_UNUSED,
+ struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
+{
return true;
}
projects / thirdparty / binutils-gdb.git / blobdiff