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

1 files changed, 237 insertions, 0 deletions

diff --git a/src/libelf/gelf_xlate.c b/src/libelf/gelf_xlate.c
new file mode 100644
index 00000000..7cf3b3c9
--- /dev/null
+++ b/src/libelf/gelf_xlate.c
@@ -0,0 +1,237 @@
+/* Transformation functions for ELF data types.
+   Copyright (C) 1998,1999,2000,2002,2004,2005,2006,2007 Red Hat, Inc.
+   This file is part of Red Hat elfutils.
+   Written by Ulrich Drepper <drepper@redhat.com>, 1998.
+
+   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.
+
+   In addition, as a special exception, Red Hat, Inc. gives You the
+   additional right to link the code of Red Hat elfutils with code licensed
+   under any Open Source Initiative certified open source license
+   (http://www.opensource.org/licenses/index.php) which requires the
+   distribution of source code with any binary distribution and to
+   distribute linked combinations of the two.  Non-GPL Code permitted under
+   this exception must only link to the code of Red Hat elfutils through
+   those well defined interfaces identified in the file named EXCEPTION
+   found in the source code files (the "Approved Interfaces").  The files
+   of Non-GPL Code may instantiate templates or use macros or inline
+   functions from the Approved Interfaces without causing the resulting
+   work to be covered by the GNU General Public License.  Only Red Hat,
+   Inc. may make changes or additions to the list of Approved Interfaces.
+   Red Hat's grant of this exception is conditioned upon your not adding
+   any new exceptions.  If you wish to add a new Approved Interface or
+   exception, please contact Red Hat.  You must obey the GNU General Public
+   License in all respects for all of the Red Hat elfutils code and other
+   code used in conjunction with Red Hat elfutils except the Non-GPL Code
+   covered by this exception.  If you modify this file, you may extend this
+   exception to your version of the file, but you are not obligated to do
+   so.  If you do not wish to provide this exception without modification,
+   you must delete this exception statement from your version and license
+   this file solely under the GPL without exception.
+
+   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>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <byteswap.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "libelfP.h"
+
+#ifndef LIBELFBITS
+# define LIBELFBITS	32
+#endif
+
+
+/* Well, what shall I say.  Nothing to do here.  */
+#define elf_cvt_Byte(dest, src, n) \
+  (__builtin_constant_p (n) && (n) == 1					      \
+   ? (void) (*((char *) (dest)) = *((char *) (src)))			      \
+   : Elf32_cvt_Byte (dest, src, n))
+static void
+(elf_cvt_Byte) (void *dest, const void *src, size_t n,
+		int encode __attribute__ ((unused)))
+{
+  memmove (dest, src, n);
+}
+
+
+/* We'll optimize the definition of the conversion functions here a
+   bit.  We need only functions for 16, 32, and 64 bits.  The
+   functions referenced in the table will be aliases for one of these
+   functions.  Which one is decided by the ELFxx_FSZ_type.  */
+
+#if ALLOW_UNALIGNED
+
+#define FETCH(Bits, ptr)	(*(const uint##Bits##_t *) ptr)
+#define STORE(Bits, ptr, val)	(*(uint##Bits##_t *) ptr = val)
+
+#else
+
+union unaligned
+  {
+    uint16_t u16;
+    uint32_t u32;
+    uint64_t u64;
+  } __attribute__ ((packed));
+
+#define FETCH(Bits, ptr)	(((const union unaligned *) ptr)->u##Bits)
+#define STORE(Bits, ptr, val)	(((union unaligned *) ptr)->u##Bits = val)
+
+#endif
+
+/* Now define the conversion functions for the basic types.  We use here
+   the fact that file and memory types are the same and that we have the
+   ELFxx_FSZ_* macros.
+
+   At the same time we define inline functions which we will use to
+   convert the complex types.  */
+#define FUNDAMENTAL(NAME, Name, Bits) \
+  INLINE2 (ELFW2(Bits,FSZ_##NAME), ElfW2(Bits,cvt_##Name), ElfW2(Bits,Name))
+#define INLINE2(Bytes, FName, TName) \
+  INLINE3 (Bytes, FName, TName)
+#define INLINE3(Bytes, FName, TName)					      \
+  static inline void FName##1 (void *dest, const void *ptr)		      \
+  {									      \
+    switch (Bytes)							      \
+      {									      \
+      case 2: STORE (16, dest, bswap_16 (FETCH (16, ptr))); break;	      \
+      case 4: STORE (32, dest, bswap_32 (FETCH (32, ptr))); break;	      \
+      case 8: STORE (64, dest, bswap_64 (FETCH (64, ptr))); break;	      \
+      default:								      \
+	abort ();							      \
+      }									      \
+  }									      \
+									      \
+  static void FName (void *dest, const void *ptr, size_t len,		      \
+		     int encode __attribute__ ((unused)))		      \
+  {									      \
+    size_t n = len / sizeof (TName);					      \
+    if (dest < ptr)							      \
+      while (n-- > 0)							      \
+	{								      \
+	  FName##1 (dest, ptr);						      \
+	  dest += Bytes;						      \
+	  ptr += Bytes;							      \
+	}								      \
+    else								      \
+      {									      \
+	dest += len;							      \
+	ptr += len;							      \
+	while (n-- > 0)							      \
+	  {								      \
+	    ptr -= Bytes;						      \
+	    dest -= Bytes;						      \
+	    FName##1 (dest, ptr);					      \
+	  }								      \
+      }									      \
+  }
+
+
+/* Now the tricky part: define the transformation functions for the
+   complex types.  We will use the definitions of the types in
+   abstract.h.  */
+#define START(Bits, Name, EName) \
+  static void								      \
+  ElfW2 (Bits, cvt_##Name) (void *dest, const void *src, size_t len,	      \
+			    int encode __attribute__ ((unused)))	      \
+  { ElfW2(Bits, Name) *tdest = (ElfW2(Bits, Name) *) dest;		      \
+    ElfW2(Bits, Name) *tsrc = (ElfW2(Bits, Name) *) src;		      \
+    size_t n;								      \
+    for (n = len / sizeof (ElfW2(Bits, Name)); n > 0; ++tdest, ++tsrc, --n) {
+#define END(Bits, Name) } }
+#define TYPE_EXTRA(Code)
+#define TYPE_XLATE(Code) Code
+#define TYPE_NAME(Type, Name) TYPE_NAME2 (Type, Name)
+#define TYPE_NAME2(Type, Name) Type##1 (&tdest->Name, &tsrc->Name);
+#define TYPE(Name, Bits) TYPE2 (Name, Bits)
+#define TYPE2(Name, Bits) TYPE3 (Name##Bits)
+#define TYPE3(Name) Name (cvt_)
+
+/* Signal that we are generating conversion functions.  */
+#define GENERATE_CONVERSION
+
+/* First generate the 32-bit conversion functions.  */
+#define LIBELFBITS 32
+#include "gelf_xlate.h"
+
+/* Now generate the 64-bit conversion functions.  */
+#define LIBELFBITS 64
+#include "gelf_xlate.h"
+
+
+/* We have a few functions which we must create by hand since the sections
+   do not contain records of only one type.  */
+#include "version_xlate.h"
+#include "gnuhash_xlate.h"
+#include "note_xlate.h"
+
+
+/* Now the externally visible table with the function pointers.  */
+const xfct_t __elf_xfctstom[EV_NUM - 1][EV_NUM - 1][ELFCLASSNUM - 1][ELF_T_NUM] =
+{
+  [EV_CURRENT - 1] = {
+    [EV_CURRENT - 1] = {
+      [ELFCLASS32 - 1] = {
+#define define_xfcts(Bits) \
+	[ELF_T_BYTE]	= elf_cvt_Byte,					      \
+	[ELF_T_ADDR]	= ElfW2(Bits, cvt_Addr),			      \
+	[ELF_T_DYN]	= ElfW2(Bits, cvt_Dyn),				      \
+	[ELF_T_EHDR]	= ElfW2(Bits, cvt_Ehdr),			      \
+	[ELF_T_HALF]	= ElfW2(Bits, cvt_Half),			      \
+	[ELF_T_OFF]	= ElfW2(Bits, cvt_Off),				      \
+	[ELF_T_PHDR]	= ElfW2(Bits, cvt_Phdr),			      \
+	[ELF_T_RELA]	= ElfW2(Bits, cvt_Rela),			      \
+	[ELF_T_REL]	= ElfW2(Bits, cvt_Rel),				      \
+	[ELF_T_SHDR]	= ElfW2(Bits, cvt_Shdr),			      \
+	[ELF_T_SWORD]	= ElfW2(Bits, cvt_Sword),			      \
+	[ELF_T_SYM]	= ElfW2(Bits, cvt_Sym),				      \
+	[ELF_T_WORD]	= ElfW2(Bits, cvt_Word),			      \
+	[ELF_T_XWORD]	= ElfW2(Bits, cvt_Xword),			      \
+	[ELF_T_SXWORD]	= ElfW2(Bits, cvt_Sxword),			      \
+	[ELF_T_VDEF]	= elf_cvt_Verdef,				      \
+	[ELF_T_VDAUX]	= elf_cvt_Verdef,				      \
+	[ELF_T_VNEED]	= elf_cvt_Verneed,				      \
+	[ELF_T_VNAUX]	= elf_cvt_Verneed,				      \
+	[ELF_T_NHDR]	= elf_cvt_note,					      \
+	[ELF_T_SYMINFO] = ElfW2(Bits, cvt_Syminfo),			      \
+	[ELF_T_MOVE]	= ElfW2(Bits, cvt_Move),			      \
+	[ELF_T_LIB]	= ElfW2(Bits, cvt_Lib),				      \
+	[ELF_T_AUXV]	= ElfW2(Bits, cvt_auxv_t)
+        define_xfcts (32),
+	[ELF_T_GNUHASH] = Elf32_cvt_Word
+      },
+      [ELFCLASS64 - 1] = {
+	define_xfcts (64),
+	[ELF_T_GNUHASH] = elf_cvt_gnuhash
+      }
+    }
+  }
+};
+/* For now we only handle the case where the memory representation is the
+   same as the file representation.  Should this change we have to define
+   separate functions.  For now reuse them.  */
+#ifndef __APPLE__
+strong_alias (__elf_xfctstom, __elf_xfctstof)
+#endif