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authorRichard Henderson <rth@twiddle.net>2014-02-12 06:54:57 -0800
committerRichard Henderson <rth@twiddle.net>2014-02-12 07:00:06 -0800
commit68b7efaadb1b6045a56277ea62d324c20ac0b633 (patch)
tree07b51c9866373430373fb90b252d46c23cc1707e /ports/sysdeps/alpha/strrchr.S
parent8fd7b0d5591e59ed5cb3078b351bd49314a66cef (diff)
downloadglibc-68b7efaadb1b6045a56277ea62d324c20ac0b633.tar.gz
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Relocate alpha from ports to libc
Also fixed the following whitespace nits to satisfy the push:

sysdeps/alpha/alphaev6/memset.S:142: space before tab in indent.
sysdeps/alpha/configure:1: new blank line at EOF.
sysdeps/alpha/fpu/e_sqrt.c:126: space before tab in indent.
sysdeps/alpha/preconfigure:1: new blank line at EOF.
sysdeps/unix/sysv/linux/alpha/syscalls.list:1: new blank line at EOF.
Diffstat (limited to 'ports/sysdeps/alpha/strrchr.S')
-rw-r--r--ports/sysdeps/alpha/strrchr.S110
1 files changed, 0 insertions, 110 deletions
diff --git a/ports/sysdeps/alpha/strrchr.S b/ports/sysdeps/alpha/strrchr.S
deleted file mode 100644
index e85f0cf464..0000000000
--- a/ports/sysdeps/alpha/strrchr.S
+++ /dev/null
@@ -1,110 +0,0 @@
-/* Copyright (C) 1996-2014 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, see
-   <http://www.gnu.org/licenses/>.  */
-
-/* Return the address of the last occurrence of a given character
-   within a null-terminated string, or null if it is not found.
-
-   This is generally scheduled for the EV5 (got to look out for my own
-   interests :-), but with EV4 needs in mind.  There are, in fact, fewer
-   stalls on the EV4 than there are on the EV5.
-*/
-
-#include <sysdep.h>
-
-	.set noreorder
-	.set noat
-
-ENTRY(strrchr)
-#ifdef PROF
-	ldgp	gp, 0(pv)
-	lda	AT, _mcount
-	jsr	AT, (AT), _mcount
-	.prologue 1
-#else
-	.prologue 0
-#endif
-
-	and	a1, 0xff, a1	# e0    : zero extend our test character
-	mov	zero, t6	# .. e1 : t6 is last match aligned addr
-	sll	a1, 8, t5	# e0    : replicate our test character
-	mov	zero, t7	# .. e1 : t7 is last match byte compare mask
-	or	t5, a1, a1	# e0    :
-	ldq_u   t0, 0(a0)	# .. e1 : load first quadword
-	sll	a1, 16, t5	# e0    :
-	andnot  a0, 7, v0	# .. e1 : align source addr
-	or	t5, a1, a1	# e0    :
-	lda	t4, -1		# .. e1 : build garbage mask
-	sll	a1, 32, t5	# e0    :
-	cmpbge  zero, t0, t1	# .. e1 : bits set iff byte == zero
-	mskqh	t4, a0, t4	# e0    :
-	or	t5, a1, a1	# .. e1 : character replication complete
-	xor	t0, a1, t2	# e0    : make bytes == c zero
-	cmpbge	zero, t4, t4	# .. e1 : bits set iff byte is garbage
-	cmpbge  zero, t2, t3	# e0    : bits set iff byte == c
-	andnot	t1, t4, t1	# .. e1 : clear garbage from null test
-	andnot	t3, t4, t3	# e0    : clear garbage from char test
-	bne	t1, $eos	# .. e1 : did we already hit the terminator?
-
-	/* Character search main loop */
-$loop:
-	ldq	t0, 8(v0)	# e0    : load next quadword
-	cmovne	t3, v0, t6	# .. e1 : save previous comparisons match
-	cmovne	t3, t3, t7	# e0    :
-	addq	v0, 8, v0	# .. e1 :
-	xor	t0, a1, t2	# e0    :
-	cmpbge	zero, t0, t1	# .. e1 : bits set iff byte == zero
-	cmpbge	zero, t2, t3	# e0    : bits set iff byte == c
-	beq	t1, $loop	# .. e1 : if we havnt seen a null, loop
-
-	/* Mask out character matches after terminator */
-$eos:
-	negq	t1, t4		# e0    : isolate first null byte match
-	and	t1, t4, t4	# e1    :
-	subq	t4, 1, t5	# e0    : build a mask of the bytes upto...
-	or	t4, t5, t4	# e1    : ... and including the null
-
-	and	t3, t4, t3	# e0    : mask out char matches after null
-	cmovne	t3, t3, t7	# .. e1 : save it, if match found
-	cmovne	t3, v0, t6	# e0    :
-
-	/* Locate the address of the last matched character */
-
-	/* Retain the early exit for the ev4 -- the ev5 mispredict penalty
-	   is 5 cycles -- the same as just falling through.  */
-	beq	t7, $retnull	# .. e1 :
-
-	and	t7, 0xf0, t2	# e0    : binary search for the high bit set
-	cmovne	t2, t2, t7	# .. e1 (zdb)
-	cmovne	t2, 4, t2	# e0    :
-	and	t7, 0xcc, t1	# .. e1 :
-	cmovne	t1, t1, t7	# e0    :
-	cmovne	t1, 2, t1	# .. e1 :
-	and	t7, 0xaa, t0	# e0    :
-	cmovne	t0, 1, t0	# .. e1 (zdb)
-	addq	t2, t1, t1	# e0    :
-	addq	t6, t0, v0	# .. e1 : add our aligned base ptr to the mix
-	addq	v0, t1, v0	# e0    :
-	ret			# .. e1 :
-
-$retnull:
-	mov	zero, v0	# e0    :
-	ret			# .. e1 :
-
-	END(strrchr)
-
-weak_alias (strrchr, rindex)
-libc_hidden_builtin_def (strrchr)