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-rw-r--r--REORG.TODO/sysdeps/i386/i686/strcmp.S52
1 files changed, 52 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/i686/strcmp.S b/REORG.TODO/sysdeps/i386/i686/strcmp.S
new file mode 100644
index 0000000000..1ae305912e
--- /dev/null
+++ b/REORG.TODO/sysdeps/i386/i686/strcmp.S
@@ -0,0 +1,52 @@
+/* Highly optimized version for ix86, x>=6.
+   Copyright (C) 1999-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
+
+   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 STR1	PARMS
+#define STR2	STR1+4
+
+        .text
+ENTRY (strcmp)
+
+	movl	STR1(%esp), %ecx
+	movl	STR2(%esp), %edx
+
+L(oop):	movb	(%ecx), %al
+	cmpb	(%edx), %al
+	jne	L(neq)
+	incl	%ecx
+	incl	%edx
+	testb	%al, %al
+	jnz	L(oop)
+
+	xorl	%eax, %eax
+	/* when strings are equal, pointers rest one beyond
+	   the end of the NUL terminators.  */
+	ret
+
+L(neq):	movl	$1, %eax
+	movl	$-1, %ecx
+	cmovbl	%ecx, %eax
+
+	ret
+END (strcmp)
+libc_hidden_builtin_def (strcmp)