glibc/sysdeps/alpha/alphaev67/rawmemchr.S
Ulrich Drepper 104d0bd3ef 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
2000-12-08 17:27:11 +00:00

94 lines
2.7 KiB
ArmAsm

/* Copyright (C) 2000 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 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 pointer to first occurrence of CH in STR. */
#include <sysdep.h>
.arch ev6
.set noreorder
.set noat
ENTRY(__rawmemchr)
#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, t4, t4 # E : bits set iff byte is garbage
nop # E :
/* 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, t0 # E : bits set iff byte == c
andnot t0, t4, t0 # E : clear garbage bits
cttz t0, a2 # U0 : speculative (in case we get a match)
nop # E :
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, t1, t0 # E : bits set iff byte == c
cttz t0, a2 # U0 : speculative (in case we get a match)
nop # E :
nop # E :
beq t0, $loop # U :
$found:
negq t0, t1 # E : clear all but least set bit
and t0, t1, t0 # E :
addq v0, a2, v0 # E : Add in the bit number from above
ret # L0 :
END(__rawmemchr)
weak_alias (__rawmemchr, rawmemchr)