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1 | # |
1 | # |
2 | # Copyright (C) 2005 Martin Decky |
2 | # Copyright (C) 2005 Martin Decky |
3 | # All rights reserved. |
3 | # All rights reserved. |
4 | # |
4 | # |
5 | # Redistribution and use in source and binary forms, with or without |
5 | # Redistribution and use in source and binary forms, with or without |
6 | # modification, are permitted provided that the following conditions |
6 | # modification, are permitted provided that the following conditions |
7 | # are met: |
7 | # are met: |
8 | # |
8 | # |
9 | # - Redistributions of source code must retain the above copyright |
9 | # - Redistributions of source code must retain the above copyright |
10 | # notice, this list of conditions and the following disclaimer. |
10 | # notice, this list of conditions and the following disclaimer. |
11 | # - Redistributions in binary form must reproduce the above copyright |
11 | # - Redistributions in binary form must reproduce the above copyright |
12 | # notice, this list of conditions and the following disclaimer in the |
12 | # notice, this list of conditions and the following disclaimer in the |
13 | # documentation and/or other materials provided with the distribution. |
13 | # documentation and/or other materials provided with the distribution. |
14 | # - The name of the author may not be used to endorse or promote products |
14 | # - The name of the author may not be used to endorse or promote products |
15 | # derived from this software without specific prior written permission. |
15 | # derived from this software without specific prior written permission. |
16 | # |
16 | # |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # |
27 | # |
28 | 28 | ||
29 | #include <arch/asm/regname.h> |
29 | #include <arch/asm/regname.h> |
30 | 30 | ||
31 | .text |
31 | .text |
32 | 32 | ||
33 | .global cpu_halt |
33 | .global cpu_halt |
34 | .global cpu_sleep |
34 | .global cpu_sleep |
35 | .global memsetb |
35 | .global memsetb |
36 | .global memcpy |
36 | .global memcpy |
37 | 37 | ||
38 | cpu_halt: |
38 | cpu_halt: |
39 | b cpu_halt |
39 | b cpu_halt |
40 | 40 | ||
41 | cpu_sleep: |
41 | cpu_sleep: |
42 | b cpu_sleep |
42 | b cpu_sleep |
43 | 43 | ||
44 | memsetb: |
44 | memsetb: |
45 | rlwimi r5, r5, 8, 16, 23 |
45 | rlwimi r5, r5, 8, 16, 23 |
46 | rlwimi r5, r5, 16, 0, 15 |
46 | rlwimi r5, r5, 16, 0, 15 |
47 | 47 | ||
48 | addi r14, r3, -4 |
48 | addi r14, r3, -4 |
49 | 49 | ||
50 | cmplwi 0, r4, 4 |
50 | cmplwi 0, r4, 4 |
51 | blt 7f |
51 | blt 7f |
52 | 52 | ||
53 | stwu r5, 4(r14) |
53 | stwu r5, 4(r14) |
54 | beqlr |
54 | beqlr |
55 | 55 | ||
56 | andi. r15, r14, 3 |
56 | andi. r15, r14, 3 |
57 | add r4, r15, r4 |
57 | add r4, r15, r4 |
58 | subf r14, r15, r14 |
58 | subf r14, r15, r14 |
59 | srwi r15, r4, 2 |
59 | srwi r15, r4, 2 |
60 | mtctr r15 |
60 | mtctr r15 |
61 | 61 | ||
62 | bdz 6f |
62 | bdz 6f |
63 | 63 | ||
64 | 1: |
64 | 1: |
65 | stwu r5, 4(r14) |
65 | stwu r5, 4(r14) |
66 | bdnz 1b |
66 | bdnz 1b |
67 | 67 | ||
68 | 6: |
68 | 6: |
69 | 69 | ||
70 | andi. r4, r4, 3 |
70 | andi. r4, r4, 3 |
71 | 71 | ||
72 | 7: |
72 | 7: |
73 | 73 | ||
74 | cmpwi 0, r4, 0 |
74 | cmpwi 0, r4, 0 |
75 | beqlr |
75 | beqlr |
76 | 76 | ||
77 | mtctr r4 |
77 | mtctr r4 |
78 | addi r6, r6, 3 |
78 | addi r6, r6, 3 |
79 | 79 | ||
80 | 8: |
80 | 8: |
81 | 81 | ||
82 | stbu r5, 1(r14) |
82 | stbu r5, 1(r14) |
83 | bdnz 8b |
83 | bdnz 8b |
84 | 84 | ||
85 | blr |
85 | blr |
86 | 86 | ||
87 | memcpy: |
87 | memcpy: |
- | 88 | srwi. r7, r5, 3 |
|
- | 89 | addi r6, r3, -4 |
|
- | 90 | addi r4, r4, -4 |
|
88 | # TODO |
91 | beq 2f |
- | 92 | ||
- | 93 | andi. r0, r6, 3 |
|
- | 94 | mtctr r7 |
|
- | 95 | bne 5f |
|
- | 96 | ||
- | 97 | 1: |
|
- | 98 | ||
- | 99 | lwz r7, 4(r4) |
|
- | 100 | lwzu r8, 8(r4) |
|
- | 101 | stw r7, 4(r6) |
|
- | 102 | stwu r8, 8(r6) |
|
- | 103 | bdnz 1b |
|
- | 104 | ||
- | 105 | andi. r5, r5, 7 |
|
- | 106 | ||
- | 107 | 2: |
|
- | 108 | ||
- | 109 | cmplwi 0, r5, 4 |
|
- | 110 | blt 3f |
|
- | 111 | ||
- | 112 | lwzu r0, 4(r4) |
|
- | 113 | addi r5, r5, -4 |
|
- | 114 | stwu r0, 4(r6) |
|
- | 115 | ||
- | 116 | 3: |
|
- | 117 | ||
- | 118 | cmpwi 0, r5, 0 |
|
- | 119 | beqlr |
|
- | 120 | mtctr r5 |
|
- | 121 | addi r4, r4, 3 |
|
- | 122 | addi r6, r6, 3 |
|
- | 123 | ||
- | 124 | 4: |
|
- | 125 | ||
- | 126 | lbzu r0, 1(r4) |
|
- | 127 | stbu r0, 1(r6) |
|
- | 128 | bdnz 4b |
|
89 | blr |
129 | blr |
- | 130 | ||
- | 131 | 5: |
|
- | 132 | ||
- | 133 | subfic r0, r0, 4 |
|
- | 134 | mtctr r0 |
|
- | 135 | ||
- | 136 | 6: |
|
- | 137 | ||
- | 138 | lbz r7, 4(r4) |
|
- | 139 | addi r4, r4, 1 |
|
- | 140 | stb r7, 4(r6) |
|
- | 141 | addi r6, r6, 1 |
|
- | 142 | bdnz 6b |
|
- | 143 | subf r5, r0, r5 |
|
- | 144 | rlwinm. r7, r5, 32-3, 3, 31 |
|
- | 145 | beq 2b |
|
- | 146 | mtctr r7 |
|
- | 147 | b 1b |
|
90 | 148 |