aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/lib/copypage.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/lib/copypage.S')
-rw-r--r--arch/powerpc/lib/copypage.S121
1 files changed, 121 insertions, 0 deletions
diff --git a/arch/powerpc/lib/copypage.S b/arch/powerpc/lib/copypage.S
new file mode 100644
index 000000000000..733d61618bbf
--- /dev/null
+++ b/arch/powerpc/lib/copypage.S
@@ -0,0 +1,121 @@
1/*
2 * arch/ppc64/lib/copypage.S
3 *
4 * Copyright (C) 2002 Paul Mackerras, IBM Corp.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11#include <asm/processor.h>
12#include <asm/ppc_asm.h>
13
14_GLOBAL(copy_page)
15 std r31,-8(1)
16 std r30,-16(1)
17 std r29,-24(1)
18 std r28,-32(1)
19 std r27,-40(1)
20 std r26,-48(1)
21 std r25,-56(1)
22 std r24,-64(1)
23 std r23,-72(1)
24 std r22,-80(1)
25 std r21,-88(1)
26 std r20,-96(1)
27 li r5,4096/32 - 1
28 addi r3,r3,-8
29 li r12,5
300: addi r5,r5,-24
31 mtctr r12
32 ld r22,640(4)
33 ld r21,512(4)
34 ld r20,384(4)
35 ld r11,256(4)
36 ld r9,128(4)
37 ld r7,0(4)
38 ld r25,648(4)
39 ld r24,520(4)
40 ld r23,392(4)
41 ld r10,264(4)
42 ld r8,136(4)
43 ldu r6,8(4)
44 cmpwi r5,24
451: std r22,648(3)
46 std r21,520(3)
47 std r20,392(3)
48 std r11,264(3)
49 std r9,136(3)
50 std r7,8(3)
51 ld r28,648(4)
52 ld r27,520(4)
53 ld r26,392(4)
54 ld r31,264(4)
55 ld r30,136(4)
56 ld r29,8(4)
57 std r25,656(3)
58 std r24,528(3)
59 std r23,400(3)
60 std r10,272(3)
61 std r8,144(3)
62 std r6,16(3)
63 ld r22,656(4)
64 ld r21,528(4)
65 ld r20,400(4)
66 ld r11,272(4)
67 ld r9,144(4)
68 ld r7,16(4)
69 std r28,664(3)
70 std r27,536(3)
71 std r26,408(3)
72 std r31,280(3)
73 std r30,152(3)
74 stdu r29,24(3)
75 ld r25,664(4)
76 ld r24,536(4)
77 ld r23,408(4)
78 ld r10,280(4)
79 ld r8,152(4)
80 ldu r6,24(4)
81 bdnz 1b
82 std r22,648(3)
83 std r21,520(3)
84 std r20,392(3)
85 std r11,264(3)
86 std r9,136(3)
87 std r7,8(3)
88 addi r4,r4,640
89 addi r3,r3,648
90 bge 0b
91 mtctr r5
92 ld r7,0(4)
93 ld r8,8(4)
94 ldu r9,16(4)
953: ld r10,8(4)
96 std r7,8(3)
97 ld r7,16(4)
98 std r8,16(3)
99 ld r8,24(4)
100 std r9,24(3)
101 ldu r9,32(4)
102 stdu r10,32(3)
103 bdnz 3b
1044: ld r10,8(4)
105 std r7,8(3)
106 std r8,16(3)
107 std r9,24(3)
108 std r10,32(3)
1099: ld r20,-96(1)
110 ld r21,-88(1)
111 ld r22,-80(1)
112 ld r23,-72(1)
113 ld r24,-64(1)
114 ld r25,-56(1)
115 ld r26,-48(1)
116 ld r27,-40(1)
117 ld r28,-32(1)
118 ld r29,-24(1)
119 ld r30,-16(1)
120 ld r31,-8(1)
121 blr