[thirdparty/glibc.git] / sysdeps / sparc / sparc64 / memchr.S

/* memchr (str, ch, n) -- Return pointer to first occurrence of CH in STR less
   than N.
   For SPARC v9.
   Copyright (C) 1998-2016 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz> and
                  Jakub Jelinek <jj@ultra.linux.cz>.
   This version is developed using the same algorithm as the fast C
   version which carries the following introduction:
   Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
   with help from Dan Sahlin (dan@sics.se) and
   commentary by Jim Blandy (jimb@ai.mit.edu);
   adaptation to memchr suggested by Dick Karpinski (dick@cca.ucsf.edu),
   and implemented by Roland McGrath (roland@ai.mit.edu).

   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/>.  */

#include <sysdep.h>
#include <asm/asi.h>
#ifndef XCC
#define XCC xcc
#define USE_BPR
	.register	%g2, #scratch
	.register	%g3, #scratch
#endif

	/* Normally, this uses
	   ((xword - 0x0101010101010101) & 0x8080808080808080) 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 - 0x0101010101010101) & (~xword) & 0x8080808080808080),
	   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		32
ENTRY(__memchr)
	and		%o1, 0xff, %o1			/* IEU0		Group		*/
#ifdef USE_BPR
	brz,pn		%o2, 12f			/* CTI+IEU1			*/
#else
	tst		%o2				/* IEU1				*/
	be,pn		%XCC, 12f			/* CTI				*/
#endif
	 sll		%o1, 8, %g3			/* IEU0		Group		*/
	addcc		%o0, %o2, %o2			/* IEU1				*/
	movcs		%XCC, -1, %o2			/* IEU0		Group		*/

	sethi		%hi(0x01010101), %g1		/* IEU0		Group		*/
	or		%g3, %o1, %g3			/* IEU1				*/
	ldub		[%o0], %o3			/* Load				*/
	sllx		%g3, 16, %g5			/* IEU0		Group		*/

	or		%g1, %lo(0x01010101), %g1	/* IEU1				*/
	sllx		%g1, 32, %g2			/* IEU0		Group		*/
	or		%g3, %g5, %g3			/* IEU1				*/
	sllx		%g3, 32, %g5			/* IEU0		Group		*/

	cmp		%o3, %o1			/* IEU1				*/
	be,pn		%xcc, 13f			/* CTI				*/
	 or		%g1, %g2, %g1			/* IEU0		Group		*/
	andcc		%o0, 7, %g0			/* IEU1				*/

	bne,a,pn	%icc, 21f			/* CTI				*/
	 add		%o0, 1, %o0			/* IEU0		Group		*/
	ldx		[%o0], %o3			/* Load		Group		*/
	sllx		%g1, 7, %g2			/* IEU0				*/

	or		%g3, %g5, %g3			/* IEU1				*/
1:	add		%o0, 8, %o0			/* IEU0		Group		*/
	xor		%o3, %g3, %o4			/* IEU1				*/
							/* %g1 = 0101010101010101	*
							 * %g2 = 8080088080808080	*
							 * %g3 =  c c c c c c c c	*
							 * %o3 =      value		*
							 * %o4 =   value XOR c		*/
2:	cmp		%o0, %o2			/* IEU1		Group		*/

	bgu,pn		%XCC, 11f			/* CTI				*/
	 ldxa		[%o0] ASI_PNF, %o3		/* Load				*/
	sub		%o4, %g1, %o5			/* IEU0		Group		*/
	add		%o0, 8, %o0			/* IEU1				*/
#ifdef EIGHTBIT_NOT_RARE
	andn		%o5, %o4, %o5			/* IEU0		Group		*/
#endif

	andcc		%o5, %g2, %g0			/* IEU1		Group		*/
	be,a,pt		%xcc, 2b			/* CTI				*/
	 xor		%o3, %g3, %o4			/* IEU0				*/
	srlx		%o4, 56, %g5			/* IEU0				*/

	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/
	be,pn		%icc, 3f			/* CTI				*/
	 srlx		%o4, 48, %g5			/* IEU0				*/
	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/

	be,pn		%icc, 4f			/* CTI				*/
	 srlx		%o4, 40, %g5			/* IEU0				*/
	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/
	be,pn		%icc, 5f			/* CTI				*/

	 srlx		%o4, 32, %g5			/* IEU0				*/
	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/
	be,pn		%icc, 6f			/* CTI				*/
	 srlx		%o4, 24, %g5			/* IEU0				*/

	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/
	be,pn		%icc, 7f			/* CTI				*/
	 srlx		%o4, 16, %g5			/* IEU0				*/
	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/

	be,pn		%icc, 8f			/* CTI				*/
	 srlx		%o4, 8, %g5			/* IEU0				*/
	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/
	be,pn		%icc, 9f			/* CTI				*/

	 andcc		%o4, 0xff, %g0			/* IEU1		Group		*/
	bne,pt		%icc, 2b			/* CTI				*/
	 xor		%o3, %g3, %o4			/* IEU0				*/
	retl						/* CTI+IEU1	Group		*/

	 add		%o0, -9, %o0			/* IEU0				*/

	.align		16
3:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, -16, %o0			/* IEU0				*/
4:   	retl						/* CTI+IEU1	Group		*/
	 add		%o0, -15, %o0			/* IEU0				*/

5:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, -14, %o0			/* IEU0				*/
6:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, -13, %o0			/* IEU0				*/

7:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, -12, %o0			/* IEU0				*/
8:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, -11, %o0			/* IEU0				*/

9:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, -10, %o0			/* IEU0				*/
11:	sub		%o4, %g1, %o5			/* IEU0		Group		*/
	sub		%o0, 8, %o0			/* IEU1				*/

	andcc		%o5, %g2, %g0			/* IEU1		Group		*/
	be,pt		%xcc, 12f			/* CTI				*/
	 sub		%o2, %o0, %o2			/* IEU0				*/
	tst		%o2				/* IEU1		Group		*/

	be,pn		%XCC, 12f			/* CTI				*/
	 srlx		%o4, 56, %g5			/* IEU0				*/
	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/
	be,pn		%icc, 13f			/* CTI				*/

	 cmp		%o2, 1				/* IEU0				*/
	be,pn		%XCC, 12f			/* CTI		Group		*/
	 srlx		%o4, 48, %g5			/* IEU0				*/
	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/

	be,pn		%icc, 14f			/* CTI				*/
	 cmp		%o2, 2				/* IEU1		Group		*/
	be,pn		%XCC, 12f			/* CTI				*/
	 srlx		%o4, 40, %g5			/* IEU0				*/

	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/
	be,pn		%icc, 15f			/* CTI				*/
	 cmp		%o2, 3				/* IEU1		Group		*/
	be,pn		%XCC, 12f			/* CTI				*/

	 srlx		%o4, 32, %g5			/* IEU0				*/
	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/
	be,pn		%icc, 16f			/* CTI				*/
	 cmp		%o2, 4				/* IEU1		Group		*/

	be,pn		%XCC, 12f			/* CTI				*/
	 srlx		%o4, 24, %g5			/* IEU0				*/
	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/
	be,pn		%icc, 17f			/* CTI				*/

	 cmp		%o2, 5				/* IEU1		Group		*/
	be,pn		%XCC, 12f			/* CTI				*/
	 srlx		%o4, 16, %g5			/* IEU0				*/
	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/

	be,pn		%icc, 18f			/* CTI				*/
	 cmp		%o2, 6				/* IEU1		Group		*/
	be,pn		%XCC, 12f			/* CTI				*/
	 srlx		%o4, 8, %g5			/* IEU0				*/

	andcc		%g5, 0xff, %g0			/* IEU1		Group		*/
	be,pn		%icc, 19f			/* CTI				*/
	 nop						/* IEU0				*/
12:	retl						/* CTI+IEU1	Group		*/

	 clr		%o0				/* IEU0				*/
	nop						/* Stub				*/
13:	retl						/* CTI+IEU1	Group		*/
	 nop						/* IEU0				*/

14:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, 1, %o0			/* IEU0				*/
15:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, 2, %o0			/* IEU0				*/

16:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, 3, %o0			/* IEU0				*/
17:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, 4, %o0			/* IEU0				*/

18:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, 5, %o0			/* IEU0				*/
19:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, 6, %o0			/* IEU0				*/

21:	cmp		%o0, %o2			/* IEU1				*/
	be,pn		%XCC, 12b			/* CTI				*/
	 sllx		%g1, 7, %g2			/* IEU0		Group		*/
	ldub		[%o0], %o3			/* Load				*/

	or		%g3, %g5, %g3			/* IEU1				*/
22:	andcc		%o0, 7, %g0			/* IEU1		Group		*/
	be,a,pn		%icc, 1b			/* CTI				*/
	 ldx		[%o0], %o3			/* Load				*/

	cmp		%o3, %o1			/* IEU1		Group		*/
	be,pn		%xcc, 23f			/* CTI				*/
	 add		%o0, 1, %o0			/* IEU0				*/
	cmp		%o0, %o2			/* IEU1		Group		*/

	bne,a,pt	%XCC, 22b			/* CTI				*/
	 ldub		[%o0], %o3			/* Load				*/
	retl						/* CTI+IEU1	Group		*/
	 clr		%o0				/* IEU0				*/

23:	retl						/* CTI+IEU1	Group		*/
	 add		%o0, -1, %o0			/* IEU0				*/
END(__memchr)

weak_alias (__memchr, memchr)
libc_hidden_builtin_def (memchr)
Commit	Line	Data
ae6b8730 RH	1	/* memchr (str, ch, n) -- Return pointer to first occurrence of CH in STR less
	2	than N.
	3	For SPARC v9.
f7a9f785	4	Copyright (C) 1998-2016 Free Software Foundation, Inc.
ae6b8730 RH	5	This file is part of the GNU C Library.
	6	Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz> and
	7	Jakub Jelinek <jj@ultra.linux.cz>.
ae6b8730 RH	8	This version is developed using the same algorithm as the fast C
ae6b8730 RH	9	version which carries the following introduction:
ae6b8730 RH	10	Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
	11	with help from Dan Sahlin (dan@sics.se) and
	12	commentary by Jim Blandy (jimb@ai.mit.edu);
	13	adaptation to memchr suggested by Dick Karpinski (dick@cca.ucsf.edu),
	14	and implemented by Roland McGrath (roland@ai.mit.edu).
	15
	16	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	17	modify it under the terms of the GNU Lesser General Public
	18	License as published by the Free Software Foundation; either
	19	version 2.1 of the License, or (at your option) any later version.
ae6b8730 RH	20
	21	The GNU C Library is distributed in the hope that it will be useful,
	22	but WITHOUT ANY WARRANTY; without even the implied warranty of
	23	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	24	Lesser General Public License for more details.
ae6b8730	25
41bdb6e2	26	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	27	License along with the GNU C Library; if not, see
59ba27a6 PE	28	<http://www.gnu.org/licenses/>. */
ae6b8730 RH	29
	30	#include <sysdep.h>
	31	#include <asm/asi.h>
	32	#ifndef XCC
	33	#define XCC xcc
	34	#define USE_BPR
8cb079d4 UD	35	.register %g2, #scratch
8cb079d4 UD	36	.register %g3, #scratch
ae6b8730 RH	37	#endif
	38
	39	/* Normally, this uses
	40	((xword - 0x0101010101010101) & 0x8080808080808080) test
	41	to find out if any byte in xword could be zero. This is fast, but
	42	also gives false alarm for any byte in range 0x81-0xff. It does
	43	not matter for correctness, as if this test tells us there could
	44	be some zero byte, we check it byte by byte, but if bytes with
	45	high bits set are common in the strings, then this will give poor
	46	performance. You can #define EIGHTBIT_NOT_RARE and the algorithm
	47	will use one tick slower, but more precise test
	48	((xword - 0x0101010101010101) & (~xword) & 0x8080808080808080),
	49	which does not give any false alarms (but if some bits are set,
	50	one cannot assume from it which bytes are zero and which are not).
	51	It is yet to be measured, what is the correct default for glibc
	52	in these days for an average user.
	53	*/
	54
	55	.text
	56	.align 32
abf70633	57	ENTRY(__memchr)
407d26b7	58	and %o1, 0xff, %o1 /* IEU0 Group */
ae6b8730 RH	59	#ifdef USE_BPR
	60	brz,pn %o2, 12f /* CTI+IEU1 */
	61	#else
	62	tst %o2 /* IEU1 */
	63	be,pn %XCC, 12f /* CTI */
ae6b8730	64	#endif
407d26b7	65	sll %o1, 8, %g3 /* IEU0 Group */
aa4980fc DM	66	addcc %o0, %o2, %o2 /* IEU1 */
aa4980fc DM	67	movcs %XCC, -1, %o2 /* IEU0 Group */
ae6b8730	68
407d26b7 UD	69	sethi %hi(0x01010101), %g1 /* IEU0 Group */
407d26b7 UD	70	or %g3, %o1, %g3 /* IEU1 */
ae6b8730 RH	71	ldub [%o0], %o3 /* Load */
ae6b8730 RH	72	sllx %g3, 16, %g5 /* IEU0 Group */
ae6b8730	73
407d26b7	74	or %g1, %lo(0x01010101), %g1 /* IEU1 */
ae6b8730 RH	75	sllx %g1, 32, %g2 /* IEU0 Group */
	76	or %g3, %g5, %g3 /* IEU1 */
	77	sllx %g3, 32, %g5 /* IEU0 Group */
ae6b8730	78
407d26b7	79	cmp %o3, %o1 /* IEU1 */
ae6b8730 RH	80	be,pn %xcc, 13f /* CTI */
	81	or %g1, %g2, %g1 /* IEU0 Group */
	82	andcc %o0, 7, %g0 /* IEU1 */
ae6b8730	83
407d26b7	84	bne,a,pn %icc, 21f /* CTI */
ae6b8730 RH	85	add %o0, 1, %o0 /* IEU0 Group */
	86	ldx [%o0], %o3 /* Load Group */
	87	sllx %g1, 7, %g2 /* IEU0 */
ae6b8730	88
407d26b7	89	or %g3, %g5, %g3 /* IEU1 */
ae6b8730 RH	90	1: add %o0, 8, %o0 /* IEU0 Group */
	91	xor %o3, %g3, %o4 /* IEU1 */
	92	/* %g1 = 0101010101010101 *
	93	* %g2 = 8080088080808080 *
	94	* %g3 = c c c c c c c c *
	95	* %o3 = value *
	96	* %o4 = value XOR c */
	97	2: cmp %o0, %o2 /* IEU1 Group */
ae6b8730	98
2daff75b	99	bgu,pn %XCC, 11f /* CTI */
ae6b8730 RH	100	ldxa [%o0] ASI_PNF, %o3 /* Load */
	101	sub %o4, %g1, %o5 /* IEU0 Group */
	102	add %o0, 8, %o0 /* IEU1 */
	103	#ifdef EIGHTBIT_NOT_RARE
	104	andn %o5, %o4, %o5 /* IEU0 Group */
	105	#endif
ae6b8730	106
407d26b7	107	andcc %o5, %g2, %g0 /* IEU1 Group */
ae6b8730 RH	108	be,a,pt %xcc, 2b /* CTI */
	109	xor %o3, %g3, %o4 /* IEU0 */
	110	srlx %o4, 56, %g5 /* IEU0 */
ae6b8730	111
407d26b7	112	andcc %g5, 0xff, %g0 /* IEU1 Group */
ae6b8730 RH	113	be,pn %icc, 3f /* CTI */
	114	srlx %o4, 48, %g5 /* IEU0 */
	115	andcc %g5, 0xff, %g0 /* IEU1 Group */
ae6b8730	116
407d26b7	117	be,pn %icc, 4f /* CTI */
ae6b8730 RH	118	srlx %o4, 40, %g5 /* IEU0 */
	119	andcc %g5, 0xff, %g0 /* IEU1 Group */
	120	be,pn %icc, 5f /* CTI */
ae6b8730	121
407d26b7	122	srlx %o4, 32, %g5 /* IEU0 */
ae6b8730 RH	123	andcc %g5, 0xff, %g0 /* IEU1 Group */
	124	be,pn %icc, 6f /* CTI */
	125	srlx %o4, 24, %g5 /* IEU0 */
ae6b8730	126
407d26b7	127	andcc %g5, 0xff, %g0 /* IEU1 Group */
ae6b8730 RH	128	be,pn %icc, 7f /* CTI */
	129	srlx %o4, 16, %g5 /* IEU0 */
	130	andcc %g5, 0xff, %g0 /* IEU1 Group */
ae6b8730	131
407d26b7	132	be,pn %icc, 8f /* CTI */
ae6b8730 RH	133	srlx %o4, 8, %g5 /* IEU0 */
	134	andcc %g5, 0xff, %g0 /* IEU1 Group */
	135	be,pn %icc, 9f /* CTI */
ae6b8730	136
407d26b7	137	andcc %o4, 0xff, %g0 /* IEU1 Group */
ae6b8730 RH	138	bne,pt %icc, 2b /* CTI */
	139	xor %o3, %g3, %o4 /* IEU0 */
	140	retl /* CTI+IEU1 Group */
407d26b7	141
ae6b8730 RH	142	add %o0, -9, %o0 /* IEU0 */
	143
	144	.align 16
	145	3: retl /* CTI+IEU1 Group */
	146	add %o0, -16, %o0 /* IEU0 */
	147	4: retl /* CTI+IEU1 Group */
	148	add %o0, -15, %o0 /* IEU0 */
	149
	150	5: retl /* CTI+IEU1 Group */
	151	add %o0, -14, %o0 /* IEU0 */
	152	6: retl /* CTI+IEU1 Group */
	153	add %o0, -13, %o0 /* IEU0 */
	154
	155	7: retl /* CTI+IEU1 Group */
	156	add %o0, -12, %o0 /* IEU0 */
	157	8: retl /* CTI+IEU1 Group */
	158	add %o0, -11, %o0 /* IEU0 */
	159
	160	9: retl /* CTI+IEU1 Group */
	161	add %o0, -10, %o0 /* IEU0 */
	162	11: sub %o4, %g1, %o5 /* IEU0 Group */
	163	sub %o0, 8, %o0 /* IEU1 */
	164
	165	andcc %o5, %g2, %g0 /* IEU1 Group */
	166	be,pt %xcc, 12f /* CTI */
	167	sub %o2, %o0, %o2 /* IEU0 */
	168	tst %o2 /* IEU1 Group */
	169
	170	be,pn %XCC, 12f /* CTI */
	171	srlx %o4, 56, %g5 /* IEU0 */
	172	andcc %g5, 0xff, %g0 /* IEU1 Group */
	173	be,pn %icc, 13f /* CTI */
	174
	175	cmp %o2, 1 /* IEU0 */
	176	be,pn %XCC, 12f /* CTI Group */
	177	srlx %o4, 48, %g5 /* IEU0 */
	178	andcc %g5, 0xff, %g0 /* IEU1 Group */
	179
	180	be,pn %icc, 14f /* CTI */
	181	cmp %o2, 2 /* IEU1 Group */
	182	be,pn %XCC, 12f /* CTI */
	183	srlx %o4, 40, %g5 /* IEU0 */
	184
	185	andcc %g5, 0xff, %g0 /* IEU1 Group */
	186	be,pn %icc, 15f /* CTI */
	187	cmp %o2, 3 /* IEU1 Group */
	188	be,pn %XCC, 12f /* CTI */
	189
	190	srlx %o4, 32, %g5 /* IEU0 */
	191	andcc %g5, 0xff, %g0 /* IEU1 Group */
	192	be,pn %icc, 16f /* CTI */
	193	cmp %o2, 4 /* IEU1 Group */
	194
	195	be,pn %XCC, 12f /* CTI */
	196	srlx %o4, 24, %g5 /* IEU0 */
	197	andcc %g5, 0xff, %g0 /* IEU1 Group */
	198	be,pn %icc, 17f /* CTI */
	199
	200	cmp %o2, 5 /* IEU1 Group */
	201	be,pn %XCC, 12f /* CTI */
	202	srlx %o4, 16, %g5 /* IEU0 */
	203	andcc %g5, 0xff, %g0 /* IEU1 Group */
	204
	205	be,pn %icc, 18f /* CTI */
206	cmp %o2, 6 /* IEU1 Group */
207	be,pn %XCC, 12f /* CTI */
208	srlx %o4, 8, %g5 /* IEU0 */
209
210	andcc %g5, 0xff, %g0 /* IEU1 Group */
211	be,pn %icc, 19f /* CTI */
212	nop /* IEU0 */
213	12: retl /* CTI+IEU1 Group */
214
215	clr %o0 /* IEU0 */
216	nop /* Stub */
217	13: retl /* CTI+IEU1 Group */
218	nop /* IEU0 */
219
220	14: retl /* CTI+IEU1 Group */
221	add %o0, 1, %o0 /* IEU0 */
222	15: retl /* CTI+IEU1 Group */
223	add %o0, 2, %o0 /* IEU0 */
224
225	16: retl /* CTI+IEU1 Group */
226	add %o0, 3, %o0 /* IEU0 */
227	17: retl /* CTI+IEU1 Group */
228	add %o0, 4, %o0 /* IEU0 */
229
230	18: retl /* CTI+IEU1 Group */
231	add %o0, 5, %o0 /* IEU0 */
232	19: retl /* CTI+IEU1 Group */
233	add %o0, 6, %o0 /* IEU0 */
234
235	21: cmp %o0, %o2 /* IEU1 */
236	be,pn %XCC, 12b /* CTI */
237	sllx %g1, 7, %g2 /* IEU0 Group */
238	ldub [%o0], %o3 /* Load */
239
240	or %g3, %g5, %g3 /* IEU1 */
241	22: andcc %o0, 7, %g0 /* IEU1 Group */
242	be,a,pn %icc, 1b /* CTI */
243	ldx [%o0], %o3 /* Load */
244
245	cmp %o3, %o1 /* IEU1 Group */
246	be,pn %xcc, 23f /* CTI */
247	add %o0, 1, %o0 /* IEU0 */
248	cmp %o0, %o2 /* IEU1 Group */
249
250	bne,a,pt %XCC, 22b /* CTI */
251	ldub [%o0], %o3 /* Load */
252	retl /* CTI+IEU1 Group */
253	clr %o0 /* IEU0 */
254
255	23: retl /* CTI+IEU1 Group */
256	add %o0, -1, %o0 /* IEU0 */
abf70633 GM	257	END(__memchr)
	258
	259	weak_alias (__memchr, memchr)
85dd1003	260	libc_hidden_builtin_def (memchr)