Sparc string routines from Jakub.

1999-03-29 Jakub Jelinek <jj@ultra.linux.cz> * sysdeps/sparc/sparc32/sparcv8/Makefile: New file. * sysdeps/sparc/sparc32/sparcv8/rem.S: Delay after write %y. * sysdeps/sparc/sparc32/sparcv8/sdiv.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/udiv.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/urem.S: Likewise. * sysdeps/sparc/sparc32/sparcv9/bcopy.c: New file. * sysdeps/sparc/sparc32/sparcv9/bzero.c: New file. * sysdeps/sparc/sparc32/sparcv9/memchr.S: New file. * sysdeps/sparc/sparc32/sparcv9/memcmp.S: New file. * sysdeps/sparc/sparc32/sparcv9/memcpy.S: New file. * sysdeps/sparc/sparc32/sparcv9/memset.S: New file. * sysdeps/sparc/sparc32/sparcv9/stpcpy.S: New file. * sysdeps/sparc/sparc32/sparcv9/strcat.S: New file. * sysdeps/sparc/sparc32/sparcv9/strchr.S: New file. * sysdeps/sparc/sparc32/sparcv9/strcmp.S: New file. * sysdeps/sparc/sparc32/sparcv9/strcpy.S: New file. * sysdeps/sparc/sparc32/sparcv9/strcspn.S: New file. * sysdeps/sparc/sparc32/sparcv9/strlen.S: New file. * sysdeps/sparc/sparc32/sparcv9/strncpy.S: New file. * sysdeps/sparc/sparc32/sparcv9/strpbrk.S: New file. * sysdeps/sparc/sparc32/sparcv9/strrchr.c: New file. * sysdeps/sparc/sparc32/sparcv9/strspn.S: New file. * sysdeps/sparc/sparc32/sparcv9/dotmul.S: New file. * sysdeps/sparc/sparc32/sparcv9/rem.S: New file. * sysdeps/sparc/sparc32/sparcv9/sdiv.S: New file. * sysdeps/sparc/sparc32/sparcv9/udiv.S: New file. * sysdeps/sparc/sparc32/sparcv9/umul.S: New file. * sysdeps/sparc/sparc32/sparcv9/urem.S: New file. * sysdeps/sparc/sparc32/sparcv9/Makefile: New file. * sysdeps/sparc/sparc32/sparcv9/stpncpy.S: New file. * sysdeps/sparc/sparc32/sparcv9/strncmp.S: New file. * sysdeps/sparc/sparc32/bcopy.c: New file. * sysdeps/sparc/sparc32/bzero.c: New file. * sysdeps/sparc/sparc32/memchr.S: New file. * sysdeps/sparc/sparc32/memcpy.S: New file. * sysdeps/sparc/sparc32/memmove.c: New file. * sysdeps/sparc/sparc32/memset.S: New file. * sysdeps/sparc/sparc32/stpcpy.S: New file. * sysdeps/sparc/sparc32/strchr.S: New file. * sysdeps/sparc/sparc32/strrchr.c: New file. * sysdeps/sparc/sparc32/strcpy.S: New file. * sysdeps/sparc/sparc32/strlen.S: New file. * sysdeps/sparc/sparc32/strcat.S: New file. * sysdeps/sparc/sparc32/strcmp.S: New file. * sysdeps/sparc/sparc64/bcopy.c: New file. * sysdeps/sparc/sparc64/bzero.c: New file. * sysdeps/sparc/sparc64/memchr.S: New file. * sysdeps/sparc/sparc64/memcmp.S: New file. * sysdeps/sparc/sparc64/memcpy.S: New file. * sysdeps/sparc/sparc64/memset.S: New file. * sysdeps/sparc/sparc64/stpcpy.S: New file. * sysdeps/sparc/sparc64/strcat.S: New file. * sysdeps/sparc/sparc64/strchr.S: New file. * sysdeps/sparc/sparc64/strcmp.S: New file. * sysdeps/sparc/sparc64/strcpy.S: New file. * sysdeps/sparc/sparc64/strcspn.S: New file. * sysdeps/sparc/sparc64/strlen.S: New file. * sysdeps/sparc/sparc64/strncpy.S: New file. * sysdeps/sparc/sparc64/strpbrk.S: New file. * sysdeps/sparc/sparc64/strrchr.c: New file. * sysdeps/sparc/sparc64/strspn.S: New file. * sysdeps/sparc/sparc64/stpncpy.S: New file. * sysdeps/sparc/sparc64/strncmp.S: New file. * sysdeps/unix/sysv/linux/sparc/sparc32/Makefile (ASFLAGS-.os): Append -fPIC, don't replace. * configure.in: Recognize sparcv8plus / sparcv9.
author: Richard Henderson <rth@redhat.com> 1999-03-29 13:25:15 +0000
committer: Richard Henderson <rth@redhat.com> 1999-03-29 13:25:15 +0000
commit: ae6b87303186d9c11aaaf87b7a9500262c0f8c5a (patch)
tree: d6903bcec84aaf26f4e51de65f48f81f654eaab9 /sysdeps/sparc/sparc32/strcmp.S
parent: b47516084bfba8471da0bdb58641c0d27e6e48b5 (diff)
download: glibc-ae6b87303186d9c11aaaf87b7a9500262c0f8c5a.tar.gz
glibc-ae6b87303186d9c11aaaf87b7a9500262c0f8c5a.tar.xz
glibc-ae6b87303186d9c11aaaf87b7a9500262c0f8c5a.zip
1 files changed, 257 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc32/strcmp.S b/sysdeps/sparc/sparc32/strcmp.S
new file mode 100644
index 0000000000..99c6e6f399
--- /dev/null
+++ b/sysdeps/sparc/sparc32/strcmp.S
@@ -0,0 +1,257 @@
+/* Compare two strings for differences.
+   For SPARC v7.
+   Copyright (C) 1996, 97, 99 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jj@ultra.linux.cz>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+
+	/* Normally, this uses ((xword - 0x01010101) & 0x80808080) test
+	   to find out if any byte in xword could be zero. This is fast, but
+	   also gives false alarm for any byte in range 0x81-0xff. It does
+	   not matter for correctness, as if this test tells us there could
+	   be some zero byte, we check it byte by byte, but if bytes with
+	   high bits set are common in the strings, then this will give poor
+	   performance. You can #define EIGHTBIT_NOT_RARE and the algorithm
+	   will use one tick slower, but more precise test
+	   ((xword - 0x01010101) & (~xword) & 0x80808080),
+	   which does not give any false alarms (but if some bits are set,
+	   one cannot assume from it which bytes are zero and which are not).
+	   It is yet to be measured, what is the correct default for glibc
+	   in these days for an average user.
+	 */
+
+	.text
+	.align		4
+10:	ldub		[%o0], %o4
+	add		%o0, 1, %o0
+	ldub		[%o1], %o5
+	cmp		%o4, 0
+	add		%o1, 1, %o1
+	be		2f
+	 subcc		%o4, %o5, %o4
+	bne		2f
+	 andcc		%o0, 3, %g0
+	be		4f
+	 or		%g1, %lo(0x80808080), %o3
+	ldub		[%o0], %o4
+	add		%o0, 1, %o0
+	ldub		[%o1], %o5
+	cmp		%o4, 0
+	add		%o1, 1, %o1
+	be		2f
+	 subcc		%o4, %o5, %o4
+	bne		2f
+	 andcc		%o0, 3, %g0
+	be		5f
+	 sethi		%hi(0x01010101), %g1
+	ldub		[%o0], %o4
+	add		%o0, 1, %o0
+	ldub		[%o1], %o5
+	cmp		%o4, 0
+	add		%o1, 1, %o1
+	be		2f
+	 subcc		%o4, %o5, %o4
+	bne		2f
+	 andcc		%o1, 3, %g2
+	bne		12f
+	 or		%g1, %lo(0x01010101), %o2
+	b		1f
+	 ld		[%o0], %o4
+2:	retl
+	 mov		%o4, %o0
+
+ENTRY(strcmp)
+	andcc		%o0, 3, %g0
+	bne		10b
+	 sethi		%hi(0x80808080), %g1
+	or		%g1, %lo(0x80808080), %o3
+4:	sethi		%hi(0x01010101), %g1
+5:	andcc		%o1, 3, %g2
+	bne		12f
+	 or		%g1, %lo(0x01010101), %o2
+
+0:	ld		[%o0], %o4
+1:	ld		[%o1], %o5
+	sub		%o4, %o2, %g1
+	add		%o0, 4, %o0
+	cmp		%o4, %o5
+#ifdef EIGHTBIT_NOT_RARE
+	andn		%g1, %o4, %g1
+#endif
+	bne		11f
+	 andcc		%g1, %o3, %g0
+	be		0b
+	 add		%o1, 4, %o1
+
+	srl		%o4, 24, %g4
+	andcc		%g4, 0xff, %g0
+	be		2f
+	 srl		%o4, 16, %g4
+	andcc		%g4, 0xff, %g0
+	be		2f
+	 srl		%o4, 8, %g4
+	andcc		%g4, 0xff, %g0
+	be		2f
+	 andcc		%o4, 0xff, %g0
+	bne,a		1b
+	 ld		[%o0], %o4
+2:	retl
+	 clr		%o0
+
+11:	srl		%o4, 24, %g4
+	srl		%o5, 24, %g5
+	andcc		%g4, 0xff, %g0
+	be		3f
+	 subcc		%g4, %g5, %g4
+	bne		3f
+	 srl		%o5, 16, %g5
+	srl		%o4, 16, %g4
+	andcc		%g4, 0xff, %g0
+	be		3f
+	 subcc		%g4, %g5, %g4
+	bne		3f
+	 srl		%o5, 8, %g5
+	srl		%o4, 8, %g4
+	andcc		%g4, 0xff, %g0
+	be		3f
+	 subcc		%g4, %g5, %g4
+	bne		3f
+	 subcc		%o4, %o5, %o4
+	retl
+	 mov		%o4, %o0
+3:	retl
+	 mov		%g4, %o0
+
+12:	save		%sp, -64, %sp
+	ld		[%i0], %i4
+	sll		%g2, 3, %g3
+	andn		%i1, 3, %i1
+	mov		32, %l1
+	ld		[%i1], %l2
+	mov		-1, %g7
+	add		%i1, 4, %i1
+	sub		%l1, %g3, %l1
+	sll		%g7, %g3, %g7
+
+1:	sll		%l2, %g3, %g5
+	and		%i4, %g7, %l3
+	sub		%i4, %i2, %g1
+#ifdef EIGHTBIT_NOT_RARE
+	andn		%g1, %i4, %g1
+#endif
+	andcc		%g1, %i3, %g1
+	bne		3f
+	 cmp		%g5, %l3
+	bne		2f
+	 add		%i0, 4, %i0
+	ld		[%i1], %l2
+	add		%i1, 4, %i1
+	srl		%l2, %l1, %l4
+	or		%l4, %g5, %l4
+	cmp		%l4, %i4
+	be,a		1b
+	 ld		[%i0], %i4
+	restore		%l4, %g0, %o3
+	retl
+	 sub		%o4, %o3, %o0
+
+2:	sll		%l2, %g3, %i2
+	srl		%i4, %g3, %i3
+	srl		%i2, %g3, %i2
+	restore
+	retl
+	 sub		%o3, %o2, %o0
+
+3:	srl		%i4, 24, %g4
+	srl		%g5, 24, %l6
+	andcc		%g4, 0xff, %g0
+	be		4f
+	 subcc		%g4, %l6, %g4
+	bne		4f
+	 cmp		%g2, 3
+	be		6f
+	 srl		%i4, 16, %g4
+	srl		%g5, 16, %l6
+	andcc		%g4, 0xff, %g0
+	be		4f
+	 subcc		%g4, %l6, %g4
+	bne		4f
+	 cmp		%g2, 2
+	be		5f
+	 srl		%i4, 8, %g4
+	srl		%g5, 8, %l6
+	andcc		%g4, 0xff, %g0
+	be		4f
+	 subcc		%g4, %l6, %g4
+	bne		4f
+	 add		%i0, 4, %i0
+	ld		[%i1], %l2
+	add		%i1, 4, %i1
+	srl		%l2, 24, %g5
+	andcc		%i4, 0xff, %g4
+	be		4f
+	 subcc		%g4, %g5, %g4
+	be,a		1b
+	 ld		[%i0], %i4
+4:	jmpl		%i7 + 8, %g0
+	 restore	%g4, %g0, %o0
+
+5:	ld		[%i1], %l2
+	add		%i1, 4, %i1
+	add		%i0, 4, %i0
+	srl		%l2, 24, %l6
+	andcc		%g4, 0xff, %g4
+	be		4b
+	 subcc		%g4, %l6, %g4
+	bne		4b
+	 srl		%l2, 16, %l6
+	andcc		%i4, 0xff, %g4
+	and		%l6, 0xff, %l6
+	be		4b
+	 subcc		%g4, %l6, %g4
+	be,a		1b
+	 ld		[%i0], %i4
+	jmpl		%i7 + 8, %g0
+	 restore	%g4, %g0, %o0
+
+6:	ld		[%i1], %l2
+	add		%i1, 4, %i1
+	add		%i0, 4, %i0
+	srl		%l2, 24, %l6
+	andcc		%g4, 0xff, %g4
+	be		4b
+	 subcc		%g4, %l6, %g4
+	bne		4b
+	 srl		%l2, 16, %l6
+	srl		%i4, 8, %g4
+	and		%l6, 0xff, %l6
+	andcc		%g4, 0xff, %g4
+	be		4b
+	 subcc		%g4, %l6, %g4
+	bne		4b
+	 srl		%l2, 8, %l6
+	andcc		%i4, 0xff, %g4
+	and		%l6, 0xff, %l6
+	be		4b
+	 subcc		%g4, %l6, %g4
+	be,a		1b
+	 ld		[%i0], %i4
+	jmpl		%i7 + 8, %g0
+	 restore	%g4, %g0, %o0
+END(strcmp)
author	Richard Henderson <rth@redhat.com>	1999-03-29 13:25:15 +0000
committer	Richard Henderson <rth@redhat.com>	1999-03-29 13:25:15 +0000
commit	ae6b87303186d9c11aaaf87b7a9500262c0f8c5a (patch)
tree	d6903bcec84aaf26f4e51de65f48f81f654eaab9 /sysdeps/sparc/sparc32/strcmp.S
parent	b47516084bfba8471da0bdb58641c0d27e6e48b5 (diff)
download	glibc-ae6b87303186d9c11aaaf87b7a9500262c0f8c5a.tar.gz glibc-ae6b87303186d9c11aaaf87b7a9500262c0f8c5a.tar.xz glibc-ae6b87303186d9c11aaaf87b7a9500262c0f8c5a.zip