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1 | # |
1 | # |
2 | # Copyright (C) 2006 Martin Decky |
2 | # Copyright (C) 2006 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 | .text |
29 | .text |
30 | 30 | ||
31 | .global halt |
31 | .global halt |
32 | .global memcpy |
32 | .global memcpy |
33 | .global jump_to_kernel |
33 | .global jump_to_kernel |
34 | 34 | ||
35 | halt: |
35 | halt: |
36 | b halt |
36 | b halt |
37 | nop |
37 | nop |
38 | 38 | ||
39 | memcpy: |
39 | memcpy: |
- | 40 | .register %g2, #scratch |
|
- | 41 | .register %g3, #scratch |
|
- | 42 | add %o1, 7, %g1 |
|
- | 43 | and %g1, -8, %g1 |
|
- | 44 | cmp %o1, %g1 |
|
- | 45 | be,pn %xcc, 3f |
|
- | 46 | add %o0, 7, %g1 |
|
- | 47 | mov 0, %g3 |
|
- | 48 | 0: |
|
- | 49 | brz,pn %o2, 2f |
|
- | 50 | mov 0, %g2 |
|
- | 51 | 1: |
|
- | 52 | ldub [%g3 + %o1], %g1 |
|
- | 53 | add %g2, 1, %g2 |
|
- | 54 | cmp %o2, %g2 |
|
- | 55 | stb %g1, [%g3 + %o0] |
|
- | 56 | bne,pt %xcc, 1b |
|
- | 57 | mov %g2, %g3 |
|
- | 58 | 2: |
|
- | 59 | jmp %o7 + 8 ! exit point |
|
- | 60 | mov %o1, %o0 |
|
- | 61 | 3: |
|
- | 62 | and %g1, -8, %g1 |
|
- | 63 | cmp %o0, %g1 |
|
- | 64 | bne,pt %xcc, 0b |
|
- | 65 | mov 0, %g3 |
|
- | 66 | srlx %o2, 3, %g4 |
|
- | 67 | brz,pn %g4, 5f |
|
- | 68 | mov 0, %g5 |
|
- | 69 | 4: |
|
- | 70 | sllx %g3, 3, %g2 |
|
- | 71 | add %g5, 1, %g3 |
|
- | 72 | ldx [%o1 + %g2], %g1 |
|
- | 73 | mov %g3, %g5 |
|
- | 74 | cmp %g4, %g3 |
|
- | 75 | bne,pt %xcc, 4b |
|
- | 76 | stx %g1, [%o0 + %g2] |
|
- | 77 | 5: |
|
- | 78 | and %o2, 7, %o2 |
|
- | 79 | brz,pn %o2, 2b |
|
- | 80 | sllx %g4, 3, %g1 |
|
- | 81 | mov 0, %g2 |
|
- | 82 | add %g1, %o0, %o0 |
|
- | 83 | add %g1, %o1, %g4 |
|
40 | b memcpy |
84 | mov 0, %g3 |
41 | nop |
85 | 6: |
- | 86 | ldub [%g2 + %g4], %g1 |
|
- | 87 | stb %g1, [%g2 + %o0] |
|
- | 88 | add %g3, 1, %g2 |
|
- | 89 | cmp %o2, %g2 |
|
- | 90 | bne,pt %xcc, 6b |
|
- | 91 | mov %g2, %g3 |
|
- | 92 | ||
- | 93 | jmp %o7 + 8 ! exit point |
|
- | 94 | mov %o1, %o0 |
|
42 | 95 | ||
43 | jump_to_kernel: |
96 | jump_to_kernel: |
44 | b jump_to_kernel |
97 | b jump_to_kernel |
45 | nop |
98 | nop |
46 | 99 | ||
47 | 100 | ||
48 |
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101 |
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49 | 102 | ||
50 | 103 | ||
51 | 104 |