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_newehdr.c b/libelf/elf32_newehdr.c
new file mode 100644
index 0000000..775d115
--- /dev/null
+++ b/libelf/elf32_newehdr.c
@@ -0,0 +1,91 @@
+/* Create new ELF header.
+ 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 <stdlib.h>
+#include <string.h>
+
+#include "libelfP.h"
+
+#ifndef LIBELFBITS
+# define LIBELFBITS 32
+#endif
+
+
+ElfW2(LIBELFBITS,Ehdr) *
+elfw2(LIBELFBITS,newehdr) (Elf *elf)
+{
+ ElfW2(LIBELFBITS,Ehdr) *result;
+
+ if (elf == NULL)
+ return NULL;
+
+ if (unlikely (elf->kind != ELF_K_ELF))
+ {
+ __libelf_seterrno (ELF_E_INVALID_HANDLE);
+ return NULL;
+ }
+
+ rwlock_wrlock (elf->lock);
+
+ if (elf->class == 0)
+ elf->class = ELFW(ELFCLASS,LIBELFBITS);
+ else if (unlikely (elf->class != ELFW(ELFCLASS,LIBELFBITS)))
+ {
+ __libelf_seterrno (ELF_E_INVALID_CLASS);
+ result = NULL;
+ goto out;
+ }
+
+ /* Don't create an ELF header if one already exists. */
+ if (elf->state.ELFW(elf,LIBELFBITS).ehdr == NULL)
+ {
+ /* We use the memory in the ELF descriptor. */
+ elf->state.ELFW(elf,LIBELFBITS).ehdr =
+ &elf->state.ELFW(elf,LIBELFBITS).ehdr_mem;
+
+ /* We clear this memory. */
+ memset (elf->state.ELFW(elf,LIBELFBITS).ehdr, '\0',
+ sizeof (ElfW2(LIBELFBITS,Ehdr)));
+
+ /* Mark the ELF header has modified. */
+ elf->state.ELFW(elf,LIBELFBITS).ehdr_flags |= ELF_F_DIRTY;
+ }
+
+ result = elf->state.ELFW(elf,LIBELFBITS).ehdr;
+
+ out:
+ rwlock_unlock (elf->lock);
+
+ return result;
+}
+INTDEF(elfw2(LIBELFBITS,newehdr))