1/* Copyright (C) 1999-2022 Free Software Foundation, Inc.
2   This file is part of the GNU C Library.
3
4   The GNU C Library is free software; you can redistribute it and/or
5   modify it under the terms of the GNU Lesser General Public
6   License as published by the Free Software Foundation; either
7   version 2.1 of the License, or (at your option) any later version.
8
9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, see
16   <https://www.gnu.org/licenses/>.  */
17
18#include <sysdep.h>
19
20/* void *memset (t, c, len);  */
21
22ENTRY(memset)
23	mov	#12,r0
24	cmp/gt	r6,r0
25	bt.s	L_byte_loop_init
26	mov	r4,r7
27
28	extu.b	r5,r5
29	swap.b	r5,r1
30	or	r1,r5
31	swap.w	r5,r1
32	or	r1,r5
33
34	mov	r4,r0
35	tst	#1,r0
36	bt	L_wordalign
37
38	mov.b	r5,@r4
39	add	#-1,r6
40	add	#1,r4
41	mov	r4,r0
42
43	.balignw 4,0x0009
44L_wordalign:
45	tst	#2,r0
46	bt	L_word_loop_init
47
48	mov.w	r5,@r4
49	add	#-2,r6
50	add	#2,r4
51	mov	r4,r0
52
53	.balignw 4,0x0009
54L_word_loop_init:
55	mov	r6,r3
56	shlr2	r3
57	mov	#7,r0
58	shlr	r3
59	and	r0,r6
60
61	.balignw 4,0x0009
62L_2word_loop:
63	mov.l	r5,@r4
64	dt	r3
65	mov.l	r5,@(4,r4)
66	bf.s	L_2word_loop
67	add	#8,r4
68
69	.balignw 4,0x0009
70L_byte_loop_init:
71	tst	r6,r6
72	bt	L_byte_exit
73
74	.balignw 4,0x0009
75L_byte_loop:
76	mov.b	r5,@r4
77	dt	r6
78	bf.s	L_byte_loop
79	add	#1,r4
80
81	.balignw 4,0x0009
82L_byte_exit:
83	rts
84	mov	r7,r0
85END(memset)
86libc_hidden_builtin_def (memset)
87