Adjust for monotone.

1 files changed, 182 insertions, 0 deletions

diff --git a/libelf/gelf_xlate.c b/libelf/gelf_xlate.c
new file mode 100644
index 00000000..bbb133a3
--- /dev/null
+++ b/libelf/gelf_xlate.c
@@ -0,0 +1,182 @@
+/* Transformation functions for ELF data types.
+   Copyright (C) 1998, 1999, 2000, 2002, 2004, 2005 Red Hat, Inc.
+   Written by Ulrich Drepper <[email protected]>, 1998.
+
+   This program 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.
+
+   This program 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 this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <byteswap.h>
+#include <stdint.h>
+#include <string.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.  */
+#define LEN2_SWAP(Src)  bswap_16 (*((uint16_t *) Src))
+#define word2_t uint16_t
+
+#define LEN4_SWAP(Src)  bswap_32 (*((uint32_t *) Src))
+#define word4_t uint32_t
+
+#define LEN8_SWAP(Src)  bswap_64 (*((uint64_t *) Src))
+#define word8_t uint64_t
+
+
+/* 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 void FName (void *dest, const void *ptr, size_t len,		      \
+		     int encode __attribute__ ((unused)))		      \
+  {									      \
+    size_t n = len / sizeof (TName);					      \
+    if (dest < ptr)							      \
+      {									      \
+	word##Bytes##_t *tdest = (word##Bytes##_t *) dest;		      \
+        const word##Bytes##_t *tptr = (const word##Bytes##_t *) ptr;	      \
+        while (n-- > 0)							      \
+	  {								      \
+	    *tdest++ = LEN##Bytes##_SWAP (tptr);			      \
+	    tptr++;							      \
+	  }								      \
+      }									      \
+    else								      \
+      {									      \
+	word##Bytes##_t *tdest = (word##Bytes##_t *) dest + n;		      \
+	const word##Bytes##_t *tptr = (const word##Bytes##_t *) ptr + n;      \
+	while (n-- > 0)							      \
+	  {								      \
+	    --tptr;							      \
+	    *--tdest = LEN##Bytes##_SWAP (tptr);			      \
+	  }								      \
+      }									      \
+ }									      \
+									      \
+  static inline void FName##1 (void *dest, const void *ptr)		      \
+  {									      \
+    *((word##Bytes##_t *) dest) =					      \
+      LEN##Bytes##_SWAP ((((word##Bytes##_t *) 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"
+
+
+/* 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]	= ElfW2(Bits, cvt_Nhdr),			      \
+	[ELF_T_SYMINFO] = ElfW2(Bits, cvt_Syminfo),			      \
+	[ELF_T_MOVE]	= ElfW2(Bits, cvt_Move),			      \
+	[ELF_T_LIB]	= ElfW2(Bits, cvt_Lib)
+        define_xfcts (32)
+      },
+      [ELFCLASS64 - 1] = {
+	define_xfcts (64)
+      }
+    }
+  }
+};
+/* 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.  */
+strong_alias (__elf_xfctstom, __elf_xfctstof)