forked from KolibriOS/kolibrios
1084 lines
25 KiB
C
1084 lines
25 KiB
C
/* Assorted BFD support routines, only used internally.
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Copyright (C) 1990-2015 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#ifndef HAVE_GETPAGESIZE
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#define getpagesize() 2048
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#endif
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/*
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SECTION
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Implementation details
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SUBSECTION
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Internal functions
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DESCRIPTION
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These routines are used within BFD.
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They are not intended for export, but are documented here for
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completeness.
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*/
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/* A routine which is used in target vectors for unsupported
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operations. */
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bfd_boolean
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bfd_false (bfd *ignore ATTRIBUTE_UNUSED)
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{
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bfd_set_error (bfd_error_invalid_operation);
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return FALSE;
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}
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/* A routine which is used in target vectors for supported operations
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which do not actually do anything. */
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bfd_boolean
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bfd_true (bfd *ignore ATTRIBUTE_UNUSED)
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{
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return TRUE;
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}
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/* A routine which is used in target vectors for unsupported
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operations which return a pointer value. */
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void *
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bfd_nullvoidptr (bfd *ignore ATTRIBUTE_UNUSED)
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{
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bfd_set_error (bfd_error_invalid_operation);
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return NULL;
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}
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int
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bfd_0 (bfd *ignore ATTRIBUTE_UNUSED)
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{
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return 0;
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}
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unsigned int
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bfd_0u (bfd *ignore ATTRIBUTE_UNUSED)
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{
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return 0;
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}
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long
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bfd_0l (bfd *ignore ATTRIBUTE_UNUSED)
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{
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return 0;
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}
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/* A routine which is used in target vectors for unsupported
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operations which return -1 on error. */
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long
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_bfd_n1 (bfd *ignore_abfd ATTRIBUTE_UNUSED)
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{
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bfd_set_error (bfd_error_invalid_operation);
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return -1;
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}
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void
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bfd_void (bfd *ignore ATTRIBUTE_UNUSED)
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{
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}
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long
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_bfd_norelocs_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
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asection *sec ATTRIBUTE_UNUSED)
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{
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return sizeof (arelent *);
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}
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long
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_bfd_norelocs_canonicalize_reloc (bfd *abfd ATTRIBUTE_UNUSED,
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asection *sec ATTRIBUTE_UNUSED,
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arelent **relptr,
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asymbol **symbols ATTRIBUTE_UNUSED)
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{
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*relptr = NULL;
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return 0;
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}
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bfd_boolean
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_bfd_nocore_core_file_matches_executable_p
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(bfd *ignore_core_bfd ATTRIBUTE_UNUSED,
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bfd *ignore_exec_bfd ATTRIBUTE_UNUSED)
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{
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bfd_set_error (bfd_error_invalid_operation);
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return FALSE;
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}
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/* Routine to handle core_file_failing_command entry point for targets
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without core file support. */
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char *
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_bfd_nocore_core_file_failing_command (bfd *ignore_abfd ATTRIBUTE_UNUSED)
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{
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bfd_set_error (bfd_error_invalid_operation);
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return NULL;
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}
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/* Routine to handle core_file_failing_signal entry point for targets
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without core file support. */
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int
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_bfd_nocore_core_file_failing_signal (bfd *ignore_abfd ATTRIBUTE_UNUSED)
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{
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bfd_set_error (bfd_error_invalid_operation);
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return 0;
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}
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/* Routine to handle the core_file_pid entry point for targets without
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core file support. */
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int
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_bfd_nocore_core_file_pid (bfd *ignore_abfd ATTRIBUTE_UNUSED)
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{
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bfd_set_error (bfd_error_invalid_operation);
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return 0;
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}
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const bfd_target *
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_bfd_dummy_target (bfd *ignore_abfd ATTRIBUTE_UNUSED)
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{
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bfd_set_error (bfd_error_wrong_format);
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return 0;
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}
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/* Allocate memory using malloc. */
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void *
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bfd_malloc (bfd_size_type size)
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{
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void *ptr;
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size_t sz = (size_t) size;
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if (size != sz
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/* This is to pacify memory checkers like valgrind. */
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|| ((signed long) sz) < 0)
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{
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bfd_set_error (bfd_error_no_memory);
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return NULL;
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}
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ptr = malloc (sz);
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if (ptr == NULL && sz != 0)
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bfd_set_error (bfd_error_no_memory);
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return ptr;
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}
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/* Allocate memory using malloc, nmemb * size with overflow checking. */
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void *
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bfd_malloc2 (bfd_size_type nmemb, bfd_size_type size)
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{
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if ((nmemb | size) >= HALF_BFD_SIZE_TYPE
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&& size != 0
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&& nmemb > ~(bfd_size_type) 0 / size)
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{
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bfd_set_error (bfd_error_no_memory);
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return NULL;
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}
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return bfd_malloc (size * nmemb);
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}
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/* Reallocate memory using realloc. */
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void *
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bfd_realloc (void *ptr, bfd_size_type size)
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{
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void *ret;
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size_t sz = (size_t) size;
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if (ptr == NULL)
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return bfd_malloc (size);
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if (size != sz
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/* This is to pacify memory checkers like valgrind. */
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|| ((signed long) sz) < 0)
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{
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bfd_set_error (bfd_error_no_memory);
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return NULL;
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}
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ret = realloc (ptr, sz);
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if (ret == NULL && sz != 0)
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bfd_set_error (bfd_error_no_memory);
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return ret;
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}
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/* Reallocate memory using realloc, nmemb * size with overflow checking. */
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void *
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bfd_realloc2 (void *ptr, bfd_size_type nmemb, bfd_size_type size)
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{
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if ((nmemb | size) >= HALF_BFD_SIZE_TYPE
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&& size != 0
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&& nmemb > ~(bfd_size_type) 0 / size)
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{
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bfd_set_error (bfd_error_no_memory);
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return NULL;
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}
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return bfd_realloc (ptr, size * nmemb);
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}
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/* Reallocate memory using realloc.
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If this fails the pointer is freed before returning. */
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void *
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bfd_realloc_or_free (void *ptr, bfd_size_type size)
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{
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void *ret = bfd_realloc (ptr, size);
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if (ret == NULL && ptr != NULL)
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free (ptr);
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return ret;
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}
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/* Allocate memory using malloc and clear it. */
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void *
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bfd_zmalloc (bfd_size_type size)
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{
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void *ptr = bfd_malloc (size);
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if (ptr != NULL && size > 0)
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memset (ptr, 0, (size_t) size);
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return ptr;
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}
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/* Allocate memory using malloc (nmemb * size) with overflow checking
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and clear it. */
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void *
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bfd_zmalloc2 (bfd_size_type nmemb, bfd_size_type size)
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{
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void *ptr = bfd_malloc2 (nmemb, size);
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if (ptr != NULL)
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{
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size_t sz = nmemb * size;
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if (sz > 0)
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memset (ptr, 0, sz);
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}
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return ptr;
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}
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/*
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INTERNAL_FUNCTION
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bfd_write_bigendian_4byte_int
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SYNOPSIS
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bfd_boolean bfd_write_bigendian_4byte_int (bfd *, unsigned int);
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DESCRIPTION
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Write a 4 byte integer @var{i} to the output BFD @var{abfd}, in big
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endian order regardless of what else is going on. This is useful in
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archives.
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*/
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bfd_boolean
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bfd_write_bigendian_4byte_int (bfd *abfd, unsigned int i)
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{
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bfd_byte buffer[4];
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bfd_putb32 ((bfd_vma) i, buffer);
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return bfd_bwrite (buffer, (bfd_size_type) 4, abfd) == 4;
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}
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/** The do-it-yourself (byte) sex-change kit */
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/* The middle letter e.g. get<b>short indicates Big or Little endian
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target machine. It doesn't matter what the byte order of the host
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machine is; these routines work for either. */
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/* FIXME: Should these take a count argument?
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Answer (gnu@cygnus.com): No, but perhaps they should be inline
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functions in swap.h #ifdef __GNUC__.
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Gprof them later and find out. */
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/*
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FUNCTION
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bfd_put_size
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FUNCTION
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bfd_get_size
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DESCRIPTION
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These macros as used for reading and writing raw data in
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sections; each access (except for bytes) is vectored through
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the target format of the BFD and mangled accordingly. The
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mangling performs any necessary endian translations and
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removes alignment restrictions. Note that types accepted and
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returned by these macros are identical so they can be swapped
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around in macros---for example, @file{libaout.h} defines <<GET_WORD>>
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to either <<bfd_get_32>> or <<bfd_get_64>>.
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In the put routines, @var{val} must be a <<bfd_vma>>. If we are on a
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system without prototypes, the caller is responsible for making
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sure that is true, with a cast if necessary. We don't cast
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them in the macro definitions because that would prevent <<lint>>
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or <<gcc -Wall>> from detecting sins such as passing a pointer.
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To detect calling these with less than a <<bfd_vma>>, use
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<<gcc -Wconversion>> on a host with 64 bit <<bfd_vma>>'s.
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.
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.{* Byte swapping macros for user section data. *}
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.
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.#define bfd_put_8(abfd, val, ptr) \
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. ((void) (*((unsigned char *) (ptr)) = (val) & 0xff))
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.#define bfd_put_signed_8 \
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. bfd_put_8
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.#define bfd_get_8(abfd, ptr) \
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. (*(const unsigned char *) (ptr) & 0xff)
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.#define bfd_get_signed_8(abfd, ptr) \
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. (((*(const unsigned char *) (ptr) & 0xff) ^ 0x80) - 0x80)
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.
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.#define bfd_put_16(abfd, val, ptr) \
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. BFD_SEND (abfd, bfd_putx16, ((val),(ptr)))
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.#define bfd_put_signed_16 \
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. bfd_put_16
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.#define bfd_get_16(abfd, ptr) \
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. BFD_SEND (abfd, bfd_getx16, (ptr))
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.#define bfd_get_signed_16(abfd, ptr) \
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. BFD_SEND (abfd, bfd_getx_signed_16, (ptr))
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.
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.#define bfd_put_32(abfd, val, ptr) \
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. BFD_SEND (abfd, bfd_putx32, ((val),(ptr)))
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.#define bfd_put_signed_32 \
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. bfd_put_32
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.#define bfd_get_32(abfd, ptr) \
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. BFD_SEND (abfd, bfd_getx32, (ptr))
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.#define bfd_get_signed_32(abfd, ptr) \
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. BFD_SEND (abfd, bfd_getx_signed_32, (ptr))
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.
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.#define bfd_put_64(abfd, val, ptr) \
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. BFD_SEND (abfd, bfd_putx64, ((val), (ptr)))
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.#define bfd_put_signed_64 \
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. bfd_put_64
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.#define bfd_get_64(abfd, ptr) \
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. BFD_SEND (abfd, bfd_getx64, (ptr))
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.#define bfd_get_signed_64(abfd, ptr) \
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. BFD_SEND (abfd, bfd_getx_signed_64, (ptr))
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.
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.#define bfd_get(bits, abfd, ptr) \
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. ((bits) == 8 ? (bfd_vma) bfd_get_8 (abfd, ptr) \
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. : (bits) == 16 ? bfd_get_16 (abfd, ptr) \
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. : (bits) == 32 ? bfd_get_32 (abfd, ptr) \
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. : (bits) == 64 ? bfd_get_64 (abfd, ptr) \
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. : (abort (), (bfd_vma) - 1))
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.
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.#define bfd_put(bits, abfd, val, ptr) \
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. ((bits) == 8 ? bfd_put_8 (abfd, val, ptr) \
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. : (bits) == 16 ? bfd_put_16 (abfd, val, ptr) \
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. : (bits) == 32 ? bfd_put_32 (abfd, val, ptr) \
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. : (bits) == 64 ? bfd_put_64 (abfd, val, ptr) \
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. : (abort (), (void) 0))
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.
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*/
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/*
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FUNCTION
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bfd_h_put_size
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bfd_h_get_size
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DESCRIPTION
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These macros have the same function as their <<bfd_get_x>>
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brethren, except that they are used for removing information
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for the header records of object files. Believe it or not,
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some object files keep their header records in big endian
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order and their data in little endian order.
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.
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.{* Byte swapping macros for file header data. *}
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.
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.#define bfd_h_put_8(abfd, val, ptr) \
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. bfd_put_8 (abfd, val, ptr)
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.#define bfd_h_put_signed_8(abfd, val, ptr) \
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. bfd_put_8 (abfd, val, ptr)
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.#define bfd_h_get_8(abfd, ptr) \
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. bfd_get_8 (abfd, ptr)
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.#define bfd_h_get_signed_8(abfd, ptr) \
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. bfd_get_signed_8 (abfd, ptr)
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.
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.#define bfd_h_put_16(abfd, val, ptr) \
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. BFD_SEND (abfd, bfd_h_putx16, (val, ptr))
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.#define bfd_h_put_signed_16 \
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. bfd_h_put_16
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.#define bfd_h_get_16(abfd, ptr) \
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. BFD_SEND (abfd, bfd_h_getx16, (ptr))
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.#define bfd_h_get_signed_16(abfd, ptr) \
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. BFD_SEND (abfd, bfd_h_getx_signed_16, (ptr))
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.
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.#define bfd_h_put_32(abfd, val, ptr) \
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. BFD_SEND (abfd, bfd_h_putx32, (val, ptr))
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.#define bfd_h_put_signed_32 \
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. bfd_h_put_32
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.#define bfd_h_get_32(abfd, ptr) \
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. BFD_SEND (abfd, bfd_h_getx32, (ptr))
|
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.#define bfd_h_get_signed_32(abfd, ptr) \
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. BFD_SEND (abfd, bfd_h_getx_signed_32, (ptr))
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.
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.#define bfd_h_put_64(abfd, val, ptr) \
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. BFD_SEND (abfd, bfd_h_putx64, (val, ptr))
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||
.#define bfd_h_put_signed_64 \
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. bfd_h_put_64
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||
.#define bfd_h_get_64(abfd, ptr) \
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. BFD_SEND (abfd, bfd_h_getx64, (ptr))
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.#define bfd_h_get_signed_64(abfd, ptr) \
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. BFD_SEND (abfd, bfd_h_getx_signed_64, (ptr))
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.
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.{* Aliases for the above, which should eventually go away. *}
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.
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||
.#define H_PUT_64 bfd_h_put_64
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.#define H_PUT_32 bfd_h_put_32
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||
.#define H_PUT_16 bfd_h_put_16
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||
.#define H_PUT_8 bfd_h_put_8
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||
.#define H_PUT_S64 bfd_h_put_signed_64
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||
.#define H_PUT_S32 bfd_h_put_signed_32
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||
.#define H_PUT_S16 bfd_h_put_signed_16
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||
.#define H_PUT_S8 bfd_h_put_signed_8
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||
.#define H_GET_64 bfd_h_get_64
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.#define H_GET_32 bfd_h_get_32
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.#define H_GET_16 bfd_h_get_16
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.#define H_GET_8 bfd_h_get_8
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.#define H_GET_S64 bfd_h_get_signed_64
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.#define H_GET_S32 bfd_h_get_signed_32
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.#define H_GET_S16 bfd_h_get_signed_16
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||
.#define H_GET_S8 bfd_h_get_signed_8
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||
.
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||
.*/
|
||
|
||
/* Sign extension to bfd_signed_vma. */
|
||
#define COERCE16(x) (((bfd_vma) (x) ^ 0x8000) - 0x8000)
|
||
#define COERCE32(x) (((bfd_vma) (x) ^ 0x80000000) - 0x80000000)
|
||
#define COERCE64(x) \
|
||
(((bfd_uint64_t) (x) ^ ((bfd_uint64_t) 1 << 63)) - ((bfd_uint64_t) 1 << 63))
|
||
|
||
bfd_vma
|
||
bfd_getb16 (const void *p)
|
||
{
|
||
const bfd_byte *addr = (const bfd_byte *) p;
|
||
return (addr[0] << 8) | addr[1];
|
||
}
|
||
|
||
bfd_vma
|
||
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 (const void *p)
|
||
{
|
||
const bfd_byte *addr = (const bfd_byte *) p;
|
||
return COERCE16 ((addr[0] << 8) | addr[1]);
|
||
}
|
||
|
||
bfd_signed_vma
|
||
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)
|
||
{
|
||
bfd_byte *addr = (bfd_byte *) p;
|
||
addr[0] = (data >> 8) & 0xff;
|
||
addr[1] = data & 0xff;
|
||
}
|
||
|
||
void
|
||
bfd_putl16 (bfd_vma data, void *p)
|
||
{
|
||
bfd_byte *addr = (bfd_byte *) p;
|
||
addr[0] = data & 0xff;
|
||
addr[1] = (data >> 8) & 0xff;
|
||
}
|
||
|
||
bfd_vma
|
||
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 v;
|
||
}
|
||
|
||
bfd_vma
|
||
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 v;
|
||
}
|
||
|
||
bfd_signed_vma
|
||
bfd_getb_signed_32 (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 COERCE32 (v);
|
||
}
|
||
|
||
bfd_signed_vma
|
||
bfd_getl_signed_32 (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 COERCE32 (v);
|
||
}
|
||
|
||
bfd_uint64_t
|
||
bfd_getb64 (const void *p ATTRIBUTE_UNUSED)
|
||
{
|
||
#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_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;
|
||
#endif
|
||
|
||
}
|
||
|
||
bfd_int64_t
|
||
bfd_getb_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[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_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;
|
||
#endif
|
||
}
|
||
|
||
void
|
||
bfd_putb32 (bfd_vma data, void *p)
|
||
{
|
||
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 (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;
|
||
addr[3] = (data >> 24) & 0xff;
|
||
}
|
||
|
||
void
|
||
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 (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, bfd_boolean 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, bfd_boolean 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;
|
||
}
|
||
|
||
/* Default implementation */
|
||
|
||
bfd_boolean
|
||
_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 (section->compress_status != COMPRESS_SECTION_NONE)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%B: unable to get decompressed section %A"),
|
||
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)
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return FALSE;
|
||
}
|
||
|
||
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
|
||
|| bfd_bread (location, count, abfd) != count)
|
||
return FALSE;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
bfd_boolean
|
||
_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)
|
||
{
|
||
/* 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_zmalloc (sizeof (bfd_window_internal));
|
||
if (w->i == NULL)
|
||
return FALSE;
|
||
w->i->data = bfd_malloc (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 (abfd->direction != write_direction && section->rawsize != 0)
|
||
sz = section->rawsize;
|
||
else
|
||
sz = section->size;
|
||
if (offset + count > sz
|
||
|| ! bfd_get_file_window (abfd, section->filepos + offset, count, w,
|
||
TRUE))
|
||
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. */
|
||
bfd_boolean
|
||
_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, section->filepos + offset, SEEK_SET) != 0
|
||
|| bfd_bwrite (location, 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. A @var{x} of 0 returns 0.
|
||
*/
|
||
|
||
unsigned int
|
||
bfd_log2 (bfd_vma x)
|
||
{
|
||
unsigned int result = 0;
|
||
|
||
if (x <= 1)
|
||
return result;
|
||
--x;
|
||
do
|
||
++result;
|
||
while ((x >>= 1) != 0);
|
||
return result;
|
||
}
|
||
|
||
bfd_boolean
|
||
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;
|
||
}
|
||
|
||
/* 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. */
|
||
bfd_boolean
|
||
_bfd_generic_verify_endian_match (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 = _("%B: compiled for a big endian system and target is little endian");
|
||
else
|
||
msg = _("%B: compiled for a little endian system and target is big endian");
|
||
|
||
(*_bfd_error_handler) (msg, ibfd);
|
||
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return FALSE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Give a warning at runtime if someone compiles code which calls
|
||
old routines. */
|
||
|
||
void
|
||
warn_deprecated (const char *what,
|
||
const char *file,
|
||
int line,
|
||
const char *func)
|
||
{
|
||
/* Poor man's tracking of functions we've already warned about. */
|
||
static size_t mask = 0;
|
||
|
||
if (~(size_t) func & ~mask)
|
||
{
|
||
fflush (stdout);
|
||
/* Note: separate sentences in order to allow
|
||
for translation into other languages. */
|
||
if (func)
|
||
fprintf (stderr, _("Deprecated %s called at %s line %d in %s\n"),
|
||
what, file, line, func);
|
||
else
|
||
fprintf (stderr, _("Deprecated %s called\n"), what);
|
||
fflush (stderr);
|
||
mask |= ~(size_t) func;
|
||
}
|
||
}
|
||
|
||
/* Helper function for reading uleb128 encoded data. */
|
||
|
||
bfd_vma
|
||
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++;
|
||
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
|
||
safe_read_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
|
||
bfd_byte *data,
|
||
unsigned int *length_return,
|
||
bfd_boolean 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++;
|
||
|
||
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
|
||
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 ++;
|
||
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;
|
||
}
|
||
|
||
bfd_boolean
|
||
_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;
|
||
}
|