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authorUlrich Drepper <drepper@redhat.com>2000-12-08 17:27:11 +0000
committerUlrich Drepper <drepper@redhat.com>2000-12-08 17:27:11 +0000
commit104d0bd3ef1ea7a97ae7b3e4a8a63a08b92cfc1c (patch)
tree211aa48f0dbfe5720f4fadaf86e33f9a7dbb5dc8 /sysdeps/alpha/alphaev67/strchr.S
parent4e9b4067d74d2d943de6918f39c15eb8f8f11b22 (diff)
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Update.
2000-12-08  Jakub Jelinek  <jakub@redhat.com>

	* elf/dl-load.c (fillin_rpath): Don't assume there is '\0' at
	cp + len.  Compute where from dirname.
	Reported by <jreiser@BitWagon.com>.

2000-12-08  Richard Henderson  <rth@twiddle.net>

	* sysdeps/alpha/_mcount.S: Fix typo.
	* sysdeps/alpha/strncpy.S: Likewise.

	* sysdeps/alpha/alphaev6/Implies: New file.
	* sysdeps/alpha/alphaev67/Implies: New file.
	* sysdeps/alpha/alphaev67/ffs.S: New file.
	* sysdeps/alpha/alphaev67/ffsll.S: New file.
	* sysdeps/alpha/alphaev67/rawmemchr.S: New file.
	* sysdeps/alpha/alphaev67/stpcpy.S: New file.
	* sysdeps/alpha/alphaev67/stpncpy.S: New file.
	* sysdeps/alpha/rawmemchr.S: New file.
	* sysdeps/alpha/strcat.S: Tail call to __stxcpy.
	* sysdeps/alpha/strcpy.S: Likewise.

	From GMP 3.1.1:
	* sysdeps/alpha/alphaev6/addmul_1.s: New file.

	From rick.gorton@alpha-processor.com:
	* sysdeps/alpha/alphaev6/memchr.S: New file.
	* sysdeps/alpha/alphaev6/memcpy.S: New file.
	* sysdeps/alpha/alphaev6/memset.S: New file.
	* sysdeps/alpha/alphaev6/stxcpy.S: New file.
	* sysdeps/alpha/alphaev6/stxncpy.S: New file.
	* sysdeps/alpha/alphaev67/strcat.S: New file.
	* sysdeps/alpha/alphaev67/strchr.S: New file.
	* sysdeps/alpha/alphaev67/strlen.S: New file.
	* sysdeps/alpha/alphaev67/strncat.S: New file.
	* sysdeps/alpha/htonl.S: Use a shorter sequence.

2000-12-08  Jakub Jelinek  <jakub@redhat.com>

	* inet/getnameinfo.c (getnameinfo): Fix NI_NOFQDN support.
	Reported by <pspencer@fields.utoronto.ca>.

2000-12-07  Jes Sorensen  <jes@linuxcare.com>

	* sysdeps/ia64/elf/start.S (__data_start): Add __data_start variable.
	Pointed out by Hans Boehm.

2000-12-07  H.J. Lu  <hjl@gnu.org>

	* elf/dl-version.c (match_symbol): Check map->l_name[0] for printing.

2000-12-07  Andreas Jaeger  <aj@suse.de>

	* misc/error.c: Add format attributes for __error and __error_at_line.

	* nscd/dbg_log.h: Add format attribute.

2000-12-08  Ulrich Drepper  <drepper@redhat.com>

	* misc/sys/syslog.h: Add format attributes to syslog and vsyslog.
	Patch by Joseph S. Myers <jsm28@cam.ac.uk>.

	* sysdeps/generic/dl-cache.c (HWCAP_CHECK): Fix access to _dl_hwcap.
	* manual/install.texi: Recommend to set LANGUAGE=C LC_ALL=C during
Diffstat (limited to 'sysdeps/alpha/alphaev67/strchr.S')
-rw-r--r--sysdeps/alpha/alphaev67/strchr.S101
1 files changed, 101 insertions, 0 deletions
diff --git a/sysdeps/alpha/alphaev67/strchr.S b/sysdeps/alpha/alphaev67/strchr.S
new file mode 100644
index 0000000000..3ab26556cd
--- /dev/null
+++ b/sysdeps/alpha/alphaev67/strchr.S
@@ -0,0 +1,101 @@
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Richard Henderson <rth@tamu.edu>, 1996.
+   EV67 optimized by Rick Gorton <rick.gorton@alpha-processor.com>.
+
+   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 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.  */
+
+/* Return the address of a given character within a null-terminated
+   string, or null if it is not found.  */
+
+#include <sysdep.h>
+
+	.arch ev6
+	.set noreorder
+	.set noat
+
+ENTRY(strchr)
+#ifdef PROF
+	ldgp	gp, 0(pv)
+	lda	AT, _mcount
+	jsr	AT, (AT), _mcount
+	.prologue 1
+#else
+	.prologue 0
+#endif
+
+	ldq_u   t0, 0(a0)	# L : load first quadword Latency=3
+	and	a1, 0xff, t3	# E : 00000000000000ch
+	insbl	a1, 1, t5	# U : 000000000000ch00
+	insbl	a1, 7, a2	# U : ch00000000000000
+
+	insbl	t3, 6, a3	# U : 00ch000000000000
+	or	t5, t3, a1	# E : 000000000000chch
+	andnot  a0, 7, v0	# E : align our loop pointer
+	lda	t4, -1		# E : build garbage mask
+
+	mskqh	t4, a0, t4	# U : only want relevant part of first quad
+	or	a2, a3, a2	# E : chch000000000000
+	inswl	a1, 2, t5	# E : 00000000chch0000
+	inswl	a1, 4, a3	# E : 0000chch00000000
+
+	or	a1, a2, a1	# E : chch00000000chch
+	or	a3, t5, t5	# E : 0000chchchch0000
+	cmpbge  zero, t0, t2	# E : bits set iff byte == zero
+	cmpbge	zero, t4, t4	# E : bits set iff byte is garbage
+
+	/* This quad is _very_ serialized.  Lots of stalling happens */
+	or	t5, a1, a1	# E : chchchchchchchch
+	xor	t0, a1, t1	# E : make bytes == c zero
+	cmpbge  zero, t1, t3	# E : bits set iff byte == c
+	or	t2, t3, t0	# E : bits set iff char match or zero match
+
+	andnot	t0, t4, t0	# E : clear garbage bits
+	cttz	t0, a2		# U0 : speculative (in case we get a match)
+	nop			# E :
+	bne	t0, $found	# U :
+
+	/*
+	 * Yuk.  This loop is going to stall like crazy waiting for the
+	 * data to be loaded.  Not much can be done about it unless it's
+	 * unrolled multiple times, which is generally unsafe.
+	 */
+$loop:
+	ldq	t0, 8(v0)	# L : Latency=3
+	addq	v0, 8, v0	# E :
+	xor	t0, a1, t1	# E :
+	cmpbge	zero, t0, t2	# E : bits set iff byte == 0
+
+	cmpbge	zero, t1, t3	# E : bits set iff byte == c
+	or	t2, t3, t0	# E :
+	cttz	t3, a2		# U0 : speculative (in case we get a match)
+	beq	t0, $loop	# U :
+
+$found:
+	negq    t0, t1		# E : clear all but least set bit
+	and     t0, t1, t0	# E :
+	and	t0, t3, t1	# E : bit set iff byte was the char
+	addq	v0, a2, v0	# E : Add in the bit number from above
+
+	cmoveq	t1, $31, v0	# E : Two mapping slots, latency = 2
+	nop
+	nop
+	ret			# L0 :
+
+	END(strchr)
+
+weak_alias (strchr, index)