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authorPaul Mundt <lethal@linux-sh.org>2007-11-21 08:46:14 -0500
committerPaul Mundt <lethal@linux-sh.org>2008-01-27 23:18:54 -0500
commit9895f9429cb489ba271c06767531083ae4c4bcbe (patch)
tree5f6c410bf94021e9f1f309ad624f0add23eb92fa /arch/sh/mm/clear_page.S
parentefddb4c882a64b7ca44b2a089d20020b30a2c6dd (diff)
sh: clear/copy_page renames in lib and lib64.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/mm/clear_page.S')
-rw-r--r--arch/sh/mm/clear_page.S152
1 files changed, 0 insertions, 152 deletions
diff --git a/arch/sh/mm/clear_page.S b/arch/sh/mm/clear_page.S
deleted file mode 100644
index 7a7c81ee3f01..000000000000
--- a/arch/sh/mm/clear_page.S
+++ /dev/null
@@ -1,152 +0,0 @@
1/*
2 * __clear_user_page, __clear_user, clear_page implementation of SuperH
3 *
4 * Copyright (C) 2001 Kaz Kojima
5 * Copyright (C) 2001, 2002 Niibe Yutaka
6 * Copyright (C) 2006 Paul Mundt
7 */
8#include <linux/linkage.h>
9#include <asm/page.h>
10
11/*
12 * clear_page_slow
13 * @to: P1 address
14 *
15 * void clear_page_slow(void *to)
16 */
17
18/*
19 * r0 --- scratch
20 * r4 --- to
21 * r5 --- to + PAGE_SIZE
22 */
23ENTRY(clear_page_slow)
24 mov r4,r5
25 mov.l .Llimit,r0
26 add r0,r5
27 mov #0,r0
28 !
291:
30#if defined(CONFIG_CPU_SH3)
31 mov.l r0,@r4
32#elif defined(CONFIG_CPU_SH4)
33 movca.l r0,@r4
34 mov r4,r1
35#endif
36 add #32,r4
37 mov.l r0,@-r4
38 mov.l r0,@-r4
39 mov.l r0,@-r4
40 mov.l r0,@-r4
41 mov.l r0,@-r4
42 mov.l r0,@-r4
43 mov.l r0,@-r4
44#if defined(CONFIG_CPU_SH4)
45 ocbwb @r1
46#endif
47 cmp/eq r5,r4
48 bf/s 1b
49 add #28,r4
50 !
51 rts
52 nop
53.Llimit: .long (PAGE_SIZE-28)
54
55ENTRY(__clear_user)
56 !
57 mov #0, r0
58 mov #0xe0, r1 ! 0xffffffe0
59 !
60 ! r4..(r4+31)&~32 -------- not aligned [ Area 0 ]
61 ! (r4+31)&~32..(r4+r5)&~32 -------- aligned [ Area 1 ]
62 ! (r4+r5)&~32..r4+r5 -------- not aligned [ Area 2 ]
63 !
64 ! Clear area 0
65 mov r4, r2
66 !
67 tst r1, r5 ! length < 32
68 bt .Larea2 ! skip to remainder
69 !
70 add #31, r2
71 and r1, r2
72 cmp/eq r4, r2
73 bt .Larea1
74 mov r2, r3
75 sub r4, r3
76 mov r3, r7
77 mov r4, r2
78 !
79.L0: dt r3
800: mov.b r0, @r2
81 bf/s .L0
82 add #1, r2
83 !
84 sub r7, r5
85 mov r2, r4
86.Larea1:
87 mov r4, r3
88 add r5, r3
89 and r1, r3
90 cmp/hi r2, r3
91 bf .Larea2
92 !
93 ! Clear area 1
94#if defined(CONFIG_CPU_SH4)
951: movca.l r0, @r2
96#else
971: mov.l r0, @r2
98#endif
99 add #4, r2
1002: mov.l r0, @r2
101 add #4, r2
1023: mov.l r0, @r2
103 add #4, r2
1044: mov.l r0, @r2
105 add #4, r2
1065: mov.l r0, @r2
107 add #4, r2
1086: mov.l r0, @r2
109 add #4, r2
1107: mov.l r0, @r2
111 add #4, r2
1128: mov.l r0, @r2
113 add #4, r2
114 cmp/hi r2, r3
115 bt/s 1b
116 nop
117 !
118 ! Clear area 2
119.Larea2:
120 mov r4, r3
121 add r5, r3
122 cmp/hs r3, r2
123 bt/s .Ldone
124 sub r2, r3
125.L2: dt r3
1269: mov.b r0, @r2
127 bf/s .L2
128 add #1, r2
129 !
130.Ldone: rts
131 mov #0, r0 ! return 0 as normal return
132
133 ! return the number of bytes remained
134.Lbad_clear_user:
135 mov r4, r0
136 add r5, r0
137 rts
138 sub r2, r0
139
140.section __ex_table,"a"
141 .align 2
142 .long 0b, .Lbad_clear_user
143 .long 1b, .Lbad_clear_user
144 .long 2b, .Lbad_clear_user
145 .long 3b, .Lbad_clear_user
146 .long 4b, .Lbad_clear_user
147 .long 5b, .Lbad_clear_user
148 .long 6b, .Lbad_clear_user
149 .long 7b, .Lbad_clear_user
150 .long 8b, .Lbad_clear_user
151 .long 9b, .Lbad_clear_user
152.previous