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-rw-r--r--REORG.TODO/sysdeps/i386/i686/mempcpy.S65
1 files changed, 65 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/i686/mempcpy.S b/REORG.TODO/sysdeps/i386/i686/mempcpy.S
new file mode 100644
index 0000000000..31cb4efdb2
--- /dev/null
+++ b/REORG.TODO/sysdeps/i386/i686/mempcpy.S
@@ -0,0 +1,65 @@
+/* Copy memory block and return pointer to following byte.
+   For Intel 80x86, x>=6.
+   This file is part of the GNU C Library.
+   Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include "asm-syntax.h"
+
+#define PARMS	4		/* no space for saved regs */
+#define RTN	PARMS
+#define DEST	RTN
+#define SRC	DEST+4
+#define LEN	SRC+4
+
+	.text
+#if defined PIC && IS_IN (libc)
+ENTRY_CHK (__mempcpy_chk)
+	movl	12(%esp), %eax
+	cmpl	%eax, 16(%esp)
+	jb	HIDDEN_JUMPTARGET (__chk_fail)
+END_CHK (__mempcpy_chk)
+#endif
+ENTRY (__mempcpy)
+
+	movl	LEN(%esp), %ecx
+	movl	%edi, %eax
+	cfi_register (edi, eax)
+	movl	DEST(%esp), %edi
+	movl	%esi, %edx
+	cfi_register (esi, edx)
+	movl	SRC(%esp), %esi
+	cld
+	shrl	$1, %ecx
+	jnc	1f
+	movsb
+1:	shrl	$1, %ecx
+	jnc	2f
+	movsw
+2:	rep
+	movsl
+	xchgl	%edi, %eax
+	cfi_restore (edi)
+	movl	%edx, %esi
+	cfi_restore (esi)
+
+	ret
+END (__mempcpy)
+libc_hidden_def (__mempcpy)
+weak_alias (__mempcpy, mempcpy)
+libc_hidden_builtin_def (mempcpy)