Export elfutils headers and lose the version number from the path.

Having the version number in the path just means that diffs for updates
are completely unusable.

perf refers to libdw.h, libdwfl.h, and version.h as <elfutils/libdw.h> and
so on, so we do still need to do some manual work there, but let's use
symlinks rather than duplicating the header files.

Change-Id: I9fd3c5f5024bde12747fdb1c06d21cdcb3418f03

1 files changed, 110 insertions, 0 deletions

diff --git a/src/src/unaligned.h b/src/src/unaligned.h
new file mode 100644
index 00000000..ad7c55a5
--- /dev/null
+++ b/src/src/unaligned.h
@@ -0,0 +1,110 @@
+/* Unaligned memory access functionality.
+   Copyright (C) 2000, 2001, 2002, 2003, 2008 Red Hat, Inc.
+   This file is part of Red Hat elfutils.
+   Written by Ulrich Drepper <drepper@redhat.com>, 2001.
+
+   Red Hat elfutils is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by the
+   Free Software Foundation; version 2 of the License.
+
+   Red Hat 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 a copy of the GNU General Public License along
+   with Red Hat elfutils; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
+
+   Red Hat elfutils is an included package of the Open Invention Network.
+   An included package of the Open Invention Network is a package for which
+   Open Invention Network licensees cross-license their patents.  No patent
+   license is granted, either expressly or impliedly, by designation as an
+   included package.  Should you wish to participate in the Open Invention
+   Network licensing program, please visit www.openinventionnetwork.com
+   <http://www.openinventionnetwork.com>.  */
+
+#ifndef _UNALIGNED_H
+#define _UNALIGNED_H	1
+
+#include <byteswap.h>
+#include <endian.h>
+
+
+#ifndef UNALIGNED_ACCESS_CLASS
+# error "UNALIGNED_ACCESS_CLASS must be defined"
+#endif
+
+
+/* Macros to convert from the host byte order to that of the object file.  */
+#if UNALIGNED_ACCESS_CLASS == BYTE_ORDER
+# define target_bswap_16(n) (n)
+# define target_bswap_32(n) (n)
+# define target_bswap_64(n) (n)
+#else
+# define target_bswap_16(n) bswap_16 (n)
+# define target_bswap_32(n) bswap_32 (n)
+# define target_bswap_64(n) bswap_64 (n)
+#endif
+
+
+union u_2ubyte_unaligned
+{
+  uint16_t u;
+  char c[2];
+} __attribute__((packed));
+
+union u_4ubyte_unaligned
+{
+  uint32_t u;
+  char c[4];
+} __attribute__((packed));
+
+union u_8ubyte_unaligned
+{
+  uint64_t u;
+  char c[8];
+} __attribute__((packed));
+
+
+/* Macros to store value at unaligned address.  */
+#define store_2ubyte_unaligned(ptr, value) \
+  (void) (((union u_2ubyte_unaligned *) (ptr))->u = target_bswap_16 (value))
+#define store_4ubyte_unaligned(ptr, value) \
+  (void) (((union u_4ubyte_unaligned *) (ptr))->u = target_bswap_32 (value))
+#define store_8ubyte_unaligned(ptr, value) \
+  (void) (((union u_8ubyte_unaligned *) (ptr))->u = target_bswap_64 (value))
+
+
+/* Macros to add value to unaligned address.  This is a bit more
+   complicated since the value must be read from memory and eventually
+   converted twice.  */
+#if UNALIGNED_ACCESS_CLASS == BYTE_ORDER
+# define add_2ubyte_unaligned(ptr, value) \
+  (void) (((union u_2ubyte_unaligned *) (ptr))->u += value)
+# define add_4ubyte_unaligned(ptr, value) \
+  (void) (((union u_4ubyte_unaligned *) (ptr))->u += value)
+# define add_8ubyte_unaligned(ptr, value) \
+  (void) (((union u_8ubyte_unaligned *) (ptr))->u += value)
+#else
+# define add_2ubyte_unaligned(ptr, value) \
+  do {									      \
+    union u_2ubyte_unaligned *_ptr = (void *) (ptr);			      \
+    uint16_t _val = bswap_16 (_ptr->u) + (value);			      \
+    _ptr->u = bswap_16 (_val);						      \
+  } while (0)
+# define add_4ubyte_unaligned(ptr, value) \
+  do {									      \
+    union u_4ubyte_unaligned *_ptr = (void *) (ptr);			      \
+    uint32_t _val = bswap_32 (_ptr->u) + (value);			      \
+    _ptr->u = bswap_32 (_val);						      \
+  } while (0)
+# define add_8ubyte_unaligned(ptr, value) \
+  do {									      \
+    union u_8ubyte_unaligned *_ptr = (void *) (ptr);			      \
+    uint64_t _val = bswap_64 (_ptr->u) + (value);			      \
+    _ptr->u = bswap_64 (_val);						      \
+  } while (0)
+#endif
+
+#endif /* unaligned.h */