1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* 2 /*
3 * arch/alpha/lib/ev6-clear_page.S 3 * arch/alpha/lib/ev6-clear_page.S
4 * 4 *
5 * Zero an entire page. 5 * Zero an entire page.
6 */ 6 */
7 #include <linux/export.h> 7 #include <linux/export.h>
8 .text 8 .text
9 .align 4 9 .align 4
10 .global clear_page 10 .global clear_page
11 .ent clear_page 11 .ent clear_page
12 clear_page: 12 clear_page:
13 .prologue 0 13 .prologue 0
14 14
15 lda $0,128 15 lda $0,128
16 lda $1,125 16 lda $1,125
17 addq $16,64,$2 17 addq $16,64,$2
18 addq $16,128,$3 18 addq $16,128,$3
19 19
20 addq $16,192,$17 20 addq $16,192,$17
21 wh64 ($16) 21 wh64 ($16)
22 wh64 ($2) 22 wh64 ($2)
23 wh64 ($3) 23 wh64 ($3)
24 24
25 1: wh64 ($17) 25 1: wh64 ($17)
26 stq $31,0($16) 26 stq $31,0($16)
27 subq $0,1,$0 27 subq $0,1,$0
28 subq $1,1,$1 28 subq $1,1,$1
29 29
30 stq $31,8($16) 30 stq $31,8($16)
31 stq $31,16($16) 31 stq $31,16($16)
32 addq $17,64,$2 32 addq $17,64,$2
33 nop 33 nop
34 34
35 stq $31,24($16) 35 stq $31,24($16)
36 stq $31,32($16) 36 stq $31,32($16)
37 cmovgt $1,$2,$17 37 cmovgt $1,$2,$17
38 nop 38 nop
39 39
40 stq $31,40($16) 40 stq $31,40($16)
41 stq $31,48($16) 41 stq $31,48($16)
42 nop 42 nop
43 nop 43 nop
44 44
45 stq $31,56($16) 45 stq $31,56($16)
46 addq $16,64,$16 46 addq $16,64,$16
47 nop 47 nop
48 bne $0,1b 48 bne $0,1b
49 49
50 ret 50 ret
51 nop 51 nop
52 nop 52 nop
53 nop 53 nop
54 54
55 .end clear_page 55 .end clear_page
56 EXPORT_SYMBOL(clear_page) 56 EXPORT_SYMBOL(clear_page)
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