From 76e3966e9efc3808a9e7ad09121c5dfc1211c20b Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@gmail.com>
Date: Sun, 13 Nov 2011 09:50:13 -0500
Subject: SSSE3 optimized strcasecmp and strncasecmp for x86-32

---
 sysdeps/i386/i686/multiarch/strcasecmp.S | 71 ++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 sysdeps/i386/i686/multiarch/strcasecmp.S

(limited to 'sysdeps/i386/i686/multiarch/strcasecmp.S')

diff --git a/sysdeps/i386/i686/multiarch/strcasecmp.S b/sysdeps/i386/i686/multiarch/strcasecmp.S
new file mode 100644
index 0000000000..55f10ba6af
--- /dev/null
+++ b/sysdeps/i386/i686/multiarch/strcasecmp.S
@@ -0,0 +1,71 @@
+/* Entry point for multi-version x86 strcasecmp.
+   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 <sysdep.h>
+#include <init-arch.h>
+
+#ifdef SHARED
+	.text
+ENTRY(__strcasecmp)
+	.type	__strcasecmp, @gnu_indirect_function
+	pushl	%ebx
+	cfi_adjust_cfa_offset (4)
+	cfi_rel_offset (ebx, 0)
+	call	__i686.get_pc_thunk.bx
+	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
+	cmpl	$0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
+	jne	1f
+	call	__init_cpu_features
+1:	leal	__strcasecmp_ia32@GOTOFF(%ebx), %eax
+	testl	$bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx)
+	jz	2f
+	leal	__strcasecmp_ssse3@GOTOFF(%ebx), %eax
+#if 0
+	// XXX Temporarily
+	testl	$bit_SSE4_2, CPUID_OFFSET+index_SSE4_2+__cpu_features@GOTOFF(%ebx)
+	jz	2f
+	leal	__strcasecmp_sse4_2@GOTOFF(%ebx), %eax
+#endif
+2:	popl	%ebx
+	cfi_adjust_cfa_offset (-4)
+	cfi_restore (ebx)
+	ret
+END(__strcasecmp)
+#else
+	.text
+ENTRY(__strcasecmp)
+	.type	__strcasecmp, @gnu_indirect_function
+	cmpl	$0, KIND_OFFSET+__cpu_features
+	jne	1f
+	call	__init_cpu_features
+1:	leal	__strcasecmp_ia32, %eax
+	testl	$bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features
+	jz	2f
+	leal	__strcasecmp_ssse3, %eax
+#if 0
+	// XXX Temporarily
+	testl	$bit_SSE4_2, CPUID_OFFSET+index_SSE4_2+__cpu_features
+	jz	2f
+	leal	__strcasecmp_sse4_2, %eax
+#endif
+2:	ret
+END(__strcasecmp)
+#endif
+
+weak_alias (__strcasecmp, strcasecmp)
-- 
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