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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 | #include <arch/context_offset.h> |
30 | #include <arch/context_offset.h> |
31 | 31 | ||
32 | .text |
32 | .text |
33 | 33 | ||
34 | .global context_save_arch |
34 | .global context_save_arch |
35 | .global context_restore_arch |
35 | .global context_restore_arch |
36 | 36 | ||
37 | context_save_arch: |
37 | context_save_arch: |
38 | CONTEXT_SAVE_ARCH_CORE r3 |
38 | CONTEXT_SAVE_ARCH_CORE r3 |
39 | 39 | ||
40 | mflr r4 |
40 | mflr r4 |
41 | stw r4, OFFSET_PC(r3) |
41 | stw r4, OFFSET_PC(r3) |
42 | 42 | ||
43 | mfcr r4 |
43 | mfcr r4 |
44 | stw r4, OFFSET_CR(r3) |
44 | stw r4, OFFSET_CR(r3) |
45 | 45 | ||
46 | # context_save returns 1 |
46 | # context_save returns 1 |
47 | li r3, 1 |
47 | li r3, 1 |
48 | blr |
48 | blr |
49 | 49 | ||
50 | context_restore_arch: |
50 | context_restore_arch: |
51 | CONTEXT_RESTORE_ARCH_CORE r3 |
51 | CONTEXT_RESTORE_ARCH_CORE r3 |
52 | 52 | ||
53 | lwz r4, OFFSET_CR(r3) |
53 | lwz r4, OFFSET_CR(r3) |
54 | mtcr r4 |
54 | mtcr r4 |
55 | 55 | ||
56 | lwz r4, OFFSET_PC(r3) |
56 | lwz r4, OFFSET_PC(r3) |
57 | mtlr r4 |
57 | mtlr r4 |
58 | 58 | ||
59 | # context_restore returns 0 |
59 | # context_restore returns 0 |
60 | li r3, 0 |
60 | li r3, 0 |
61 | blr |
61 | blr |
62 | 62 |