Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/libelf/elf32_xlatetof.c b/libelf/elf32_xlatetof.c
new file mode 100644
index 0000000..ac4eaf4
--- /dev/null
+++ b/libelf/elf32_xlatetof.c
@@ -0,0 +1,121 @@
+/* Convert from memory to file representation.
+ Copyright (C) 1998, 1999, 2000, 2002, 2015 Red Hat, Inc.
+ This file is part of elfutils.
+ Written by Ulrich Drepper <drepper@redhat.com>, 1998.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * 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
+
+ or both in parallel, as here.
+
+ elfutils 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 copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <assert.h>
+#include <endian.h>
+#include <string.h>
+
+#include "libelfP.h"
+
+#ifndef LIBELFBITS
+# define LIBELFBITS 32
+#endif
+
+
+Elf_Data *
+elfw2(LIBELFBITS, xlatetof) (Elf_Data *dest, const Elf_Data *src,
+ unsigned int encode)
+{
+ /* First test whether the input data is really suitable for this
+ type. This means, whether there is an integer number of records.
+ Note that for this implementation the memory and file size of the
+ data types are identical. */
+#if EV_NUM != 2
+ size_t recsize = __libelf_type_sizes[src->d_version - 1][ELFW(ELFCLASS,LIBELFBITS) - 1][src->d_type];
+#else
+ size_t recsize = __libelf_type_sizes[0][ELFW(ELFCLASS,LIBELFBITS) - 1][src->d_type];
+#endif
+
+ if (src->d_size % recsize != 0)
+ {
+ __libelf_seterrno (ELF_E_INVALID_DATA);
+ return NULL;
+ }
+
+ /* Next see whether the converted data fits in the output buffer. */
+ if (src->d_size > dest->d_size)
+ {
+ __libelf_seterrno (ELF_E_DEST_SIZE);
+ return NULL;
+ }
+
+ /* Test the encode parameter. */
+ if (encode != ELFDATA2LSB && encode != ELFDATA2MSB)
+ {
+ __libelf_seterrno (ELF_E_INVALID_ENCODING);
+ return NULL;
+ }
+
+ /* Determine the translation function to use.
+
+ At this point we make an assumption which is valid for all
+ existing implementations so far: the memory and file sizes are
+ the same. This has very important consequences:
+ a) The requirement that the source and destination buffer can
+ overlap can easily be fulfilled.
+ b) We need only one function to convert from and memory to file
+ and vice versa since the function only has to copy and/or
+ change the byte order.
+ */
+ if ((__BYTE_ORDER == __LITTLE_ENDIAN && encode == ELFDATA2LSB)
+ || (__BYTE_ORDER == __BIG_ENDIAN && encode == ELFDATA2MSB))
+ {
+ /* We simply have to copy since the byte order is the same. */
+ if (src->d_buf != dest->d_buf)
+ memmove (dest->d_buf, src->d_buf, src->d_size);
+ }
+ else
+ {
+ xfct_t fctp;
+
+ /* Get a pointer to the transformation functions. The `#ifdef' is
+ a small optimization since we don't anticipate another ELF
+ version and so would waste "precious" code. */
+#if EV_NUM != 2
+ fctp = __elf_xfctstom[dest->d_version - 1][src->d_version - 1][ELFW(ELFCLASS, LIBELFBITS) - 1][src->d_type];
+#else
+ fctp = __elf_xfctstom[0][0][ELFW(ELFCLASS, LIBELFBITS) - 1][src->d_type];
+#endif
+
+ /* Do the real work. */
+ (*fctp) (dest->d_buf, src->d_buf, src->d_size, 1);
+ }
+
+ /* Now set the real destination type and length since the operation was
+ successful. */
+ dest->d_type = src->d_type;
+ dest->d_size = src->d_size;
+
+ return dest;
+}
+INTDEF(elfw2(LIBELFBITS, xlatetof))