diff options
author | kaiw <kaiw@FreeBSD.org> | 2014-01-15 22:35:55 +0000 |
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committer | kaiw <kaiw@FreeBSD.org> | 2014-01-15 22:35:55 +0000 |
commit | 7b2bd39321c7425f369d78c8cc9c19bc10cfb536 (patch) | |
tree | 0d32ad2f90e1393fc9da2240738f9547a6bcff19 /lib/libelf/libelf_xlate.c | |
parent | 7f3a50b3b9f8ecdf4619d21ed128f0277902f34f (diff) | |
download | FreeBSD-src-7b2bd39321c7425f369d78c8cc9c19bc10cfb536.zip FreeBSD-src-7b2bd39321c7425f369d78c8cc9c19bc10cfb536.tar.gz |
Removed source code for the old libelf and build the new libelf from
contrib/ instead.
Diffstat (limited to 'lib/libelf/libelf_xlate.c')
-rw-r--r-- | lib/libelf/libelf_xlate.c | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/lib/libelf/libelf_xlate.c b/lib/libelf/libelf_xlate.c deleted file mode 100644 index 5137b2c..0000000 --- a/lib/libelf/libelf_xlate.c +++ /dev/null @@ -1,149 +0,0 @@ -/*- - * Copyright (c) 2006 Joseph Koshy - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <assert.h> -#include <libelf.h> - -#include "_libelf.h" - -/* - * Translate to/from the file representation of ELF objects. - * - * Translation could potentially involve the following - * transformations: - * - * - an endianness conversion, - * - a change of layout, as the file representation of ELF objects - * can differ from their in-memory representation. - * - a change in representation due to a layout version change. - */ - -Elf_Data * -_libelf_xlate(Elf_Data *dst, const Elf_Data *src, unsigned int encoding, - int elfclass, int direction) -{ - int byteswap; - size_t cnt, dsz, fsz, msz; - uintptr_t sb, se, db, de; - - if (encoding == ELFDATANONE) - encoding = LIBELF_PRIVATE(byteorder); - - if ((encoding != ELFDATA2LSB && encoding != ELFDATA2MSB) || - dst == NULL || src == NULL || dst == src) { - LIBELF_SET_ERROR(ARGUMENT, 0); - return (NULL); - } - - assert(elfclass == ELFCLASS32 || elfclass == ELFCLASS64); - assert(direction == ELF_TOFILE || direction == ELF_TOMEMORY); - - if (dst->d_version != src->d_version) { - LIBELF_SET_ERROR(UNIMPL, 0); - return (NULL); - } - - if (src->d_buf == NULL || dst->d_buf == NULL) { - LIBELF_SET_ERROR(DATA, 0); - return (NULL); - } - - if ((int) src->d_type < 0 || src->d_type >= ELF_T_NUM) { - LIBELF_SET_ERROR(DATA, 0); - return (NULL); - } - - if ((fsz = (elfclass == ELFCLASS32 ? elf32_fsize : elf64_fsize) - (src->d_type, (size_t) 1, src->d_version)) == 0) - return (NULL); - - msz = _libelf_msize(src->d_type, elfclass, src->d_version); - - assert(msz > 0); - - if (src->d_size % (direction == ELF_TOMEMORY ? fsz : msz)) { - LIBELF_SET_ERROR(DATA, 0); - return (NULL); - } - - /* - * Determine the number of objects that need to be converted, and - * the space required for the converted objects in the destination - * buffer. - */ - if (direction == ELF_TOMEMORY) { - cnt = src->d_size / fsz; - dsz = cnt * msz; - } else { - cnt = src->d_size / msz; - dsz = cnt * fsz; - } - - if (dst->d_size < dsz) { - LIBELF_SET_ERROR(DATA, 0); - return (NULL); - } - - sb = (uintptr_t) src->d_buf; - se = sb + src->d_size; - db = (uintptr_t) dst->d_buf; - de = db + dst->d_size; - - /* - * Check for overlapping buffers. Note that db == sb is - * allowed. - */ - if (db != sb && de > sb && se > db) { - LIBELF_SET_ERROR(DATA, 0); - return (NULL); - } - - if ((direction == ELF_TOMEMORY ? db : sb) % - _libelf_malign(src->d_type, elfclass)) { - LIBELF_SET_ERROR(DATA, 0); - return (NULL); - } - - dst->d_type = src->d_type; - dst->d_size = dsz; - - byteswap = encoding != LIBELF_PRIVATE(byteorder); - - if (src->d_size == 0 || - (db == sb && !byteswap && fsz == msz)) - return (dst); /* nothing more to do */ - - if (!(_libelf_get_translator(src->d_type, direction, elfclass)) - (dst->d_buf, dsz, src->d_buf, cnt, byteswap)) { - LIBELF_SET_ERROR(DATA, 0); - return (NULL); - } - - return (dst); -} |