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/note_xlate.h b/libelf/note_xlate.h
new file mode 100644
index 0000000..62c6f63
--- /dev/null
+++ b/libelf/note_xlate.h
@@ -0,0 +1,64 @@
+/* Conversion functions for notes.
+ Copyright (C) 2007, 2009, 2014 Red Hat, Inc.
+ This file is part of elfutils.
+
+ 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/>. */
+
+static void
+elf_cvt_note (void *dest, const void *src, size_t len, int encode)
+{
+ assert (sizeof (Elf32_Nhdr) == sizeof (Elf64_Nhdr));
+
+ while (len >= sizeof (Elf32_Nhdr))
+ {
+ (1 ? Elf32_cvt_Nhdr : Elf64_cvt_Nhdr) (dest, src, sizeof (Elf32_Nhdr),
+ encode);
+ const Elf32_Nhdr *n = encode ? src : dest;
+ Elf32_Word namesz = NOTE_ALIGN (n->n_namesz);
+ Elf32_Word descsz = NOTE_ALIGN (n->n_descsz);
+
+ len -= sizeof *n;
+ src += sizeof *n;
+ dest += sizeof *n;
+
+ if (namesz > len)
+ break;
+ len -= namesz;
+ if (descsz > len)
+ break;
+ len -= descsz;
+
+ if (src != dest)
+ memcpy (dest, src, namesz + descsz);
+
+ src += namesz + descsz;
+ dest += namesz + descsz;
+ }
+
+ /* Copy opver any leftover data unconcerted. Probably part of
+ truncated name/desc data. */
+ if (unlikely (len > 0) && src != dest)
+ memcpy (dest, src, len);
+}