Work around old buggy program which cannot cope with memcpy semantics.

7 files changed, 73 insertions, 7 deletions

diff --git a/ChangeLog b/ChangeLog
index f093d9a..ff87466 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2011-03-26  H.J. Lu  <hongjiu.lu@intel.com>
+
+	[BZ #12518]
+	* sysdeps/x86_64/Versions: Add memcpy to GLIBC_2.14.
+	* sysdeps/x86_64/memcpy.S: Provide GLIBC_2_14 memcpy.
+	* sysdeps/x86_64/memmove.c: New file.
+	* sysdeps/x86_64/multiarch/memcpy.S: Include <shlib-compat.h>.
+	(memcpy): Renamed to ...
+	(__new_memcpy): This.
+	(memcpy): Provide GLIBC_2_14 memcpy.
+	* sysdeps/x86_64/multiarch/memmove.c: Include <shlib-compat.h>.
+	(memcpy): Provide GLIBC_2_2_5 memcpy.
+
 2011-04-01  Ulrich Drepper  <drepper@gmail.com>
 
 	[BZ #12631]
diff --git a/NEWS b/NEWS
index 711e11f..23be0b3 100644
--- a/NEWS
+++ b/NEWS
@@ -11,8 +11,8 @@ Version 2.14
 
 * The following bugs are resolved with this release:
 
-  11724, 12445, 12454, 12460, 12469, 12489, 12509, 12510, 12583, 12587, 12597,
-  12631
+  11724, 12445, 12454, 12460, 12469, 12489, 12509, 12510, 12518, 12583, 12587,
+  12597, 12631
 
 Version 2.13
 
diff --git a/sysdeps/x86_64/Versions b/sysdeps/x86_64/Versions
index 253a65f..a437f85 100644
--- a/sysdeps/x86_64/Versions
+++ b/sysdeps/x86_64/Versions
@@ -1,3 +1,8 @@
+libc {
+  GLIBC_2.14 {
+    memcpy;
+  }
+}
 libm {
   GLIBC_2.1 {
     # A generic bug got this omitted from other configurations' version
diff --git a/sysdeps/x86_64/memcpy.S b/sysdeps/x86_64/memcpy.S
index b4545ac..724d44e 100644
--- a/sysdeps/x86_64/memcpy.S
+++ b/sysdeps/x86_64/memcpy.S
@@ -31,6 +31,12 @@
 #  define RETVAL	(0)
 #else
 #  define RETVAL	(-8)
+#  if defined SHARED && !defined USE_MULTIARCH && !defined NOT_IN_libc
+#    define memcpy	__memcpy
+#    undef libc_hidden_builtin_def
+#    define libc_hidden_builtin_def(name) \
+	.globl __GI_memcpy; __GI_memcpy = __memcpy
+#  endif
 #endif
 #define SAVE0	(RETVAL - 8)
 #define SAVE1	(SAVE0	- 8)
@@ -571,4 +577,9 @@ END(memcpy)
 
 #ifndef USE_AS_MEMPCPY
 libc_hidden_builtin_def (memcpy)
+# if defined SHARED && !defined USE_MULTIARCH && !defined NOT_IN_libc
+#  undef memcpy
+#  include <shlib-compat.h>
+versioned_symbol (libc, __memcpy, memcpy, GLIBC_2_14);
+# endif
 #endif
diff --git a/sysdeps/x86_64/memmove.c b/sysdeps/x86_64/memmove.c
new file mode 100644
index 0000000..1a6f87d
--- /dev/null
+++ b/sysdeps/x86_64/memmove.c
@@ -0,0 +1,27 @@
+/* Copyright (C) 2011 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include "string/memmove.c"
+
+#if !defined memmove && !defined NOT_IN_libc
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_2_5, GLIBC_2_14)
+compat_symbol (libc, memmove, memcpy, GLIBC_2_2_5);
+#endif
+#endif
diff --git a/sysdeps/x86_64/multiarch/memcpy.S b/sysdeps/x86_64/multiarch/memcpy.S
index 8e9fb19..9863014 100644
--- a/sysdeps/x86_64/multiarch/memcpy.S
+++ b/sysdeps/x86_64/multiarch/memcpy.S
@@ -1,5 +1,6 @@
 /* Multiple versions of memcpy
-   Copyright (C) 2010 Free Software Foundation, Inc.
+   Copyright (C) 2010, 2011
+   Free Software Foundation, Inc.
    Contributed by Intel Corporation.
    This file is part of the GNU C Library.
 
@@ -19,6 +20,7 @@
    02111-1307 USA.  */
 
 #include <sysdep.h>
+#include <shlib-compat.h>
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in lib and for
@@ -26,8 +28,8 @@
    happened.  */
 #if defined SHARED && !defined NOT_IN_libc
 	.text
-ENTRY(memcpy)
-	.type	memcpy, @gnu_indirect_function
+ENTRY(__new_memcpy)
+	.type	__new_memcpy, @gnu_indirect_function
 	cmpl	$0, KIND_OFFSET+__cpu_features(%rip)
 	jne	1f
 	call	__init_cpu_features
@@ -39,7 +41,7 @@ ENTRY(memcpy)
 	jz	2f
 	leaq	__memcpy_ssse3_back(%rip), %rax
 2:	ret
-END(memcpy)
+END(__new_memcpy)
 
 # undef ENTRY
 # define ENTRY(name) \
@@ -68,6 +70,8 @@ END(memcpy)
    by the indirect call in the PLT.  */
 # define libc_hidden_builtin_def(name) \
 	.globl __GI_memcpy; __GI_memcpy = __memcpy_sse2
+
+versioned_symbol (libc, __new_memcpy, memcpy, GLIBC_2_14);
 #endif
 
 #include "../memcpy.S"
diff --git a/sysdeps/x86_64/multiarch/memmove.c b/sysdeps/x86_64/multiarch/memmove.c
index 3798627..04de891 100644
--- a/sysdeps/x86_64/multiarch/memmove.c
+++ b/sysdeps/x86_64/multiarch/memmove.c
@@ -1,5 +1,6 @@
 /* Multiple versions of memmove.
-   Copyright (C) 2010 Free Software Foundation, Inc.
+   Copyright (C) 2010, 2011
+   Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -20,6 +21,7 @@
 #include <string.h>
 
 #ifndef NOT_IN_libc
+#include <shlib-compat.h>
 #include "init-arch.h"
 
 #define MEMMOVE __memmove_sse2
@@ -42,4 +44,8 @@ libc_ifunc (memmove,
 	    ? (HAS_FAST_COPY_BACKWARD
 	       ? __memmove_ssse3_back : __memmove_ssse3)
 	    : __memmove_sse2);
+
+#if SHLIB_COMPAT (libc, GLIBC_2_2_5, GLIBC_2_14)
+compat_symbol (libc, memmove, memcpy, GLIBC_2_2_5);
+#endif
 #endif