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| Rev 2465 | Rev 2474 | ||
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| 1 | # |
1 | # |
| 2 | # Copyright (c) 2007 Petr Stepan |
2 | # Copyright (c) 2007 Petr Stepan |
| 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 context_save_arch |
31 | .global context_save_arch |
| 32 | .global context_restore_arch |
32 | .global context_restore_arch |
| 33 | 33 | ||
| 34 | context_save_arch: |
34 | context_save_arch: |
| 35 | stmfd sp!, {r1} |
35 | stmfd sp!, {r1} |
| 36 | mrs r1, cpsr |
36 | mrs r1, cpsr |
| 37 | and r1, r1, #0x1f |
37 | and r1, r1, #0x1f |
| 38 | stmia r0!, {r1} |
38 | stmia r0!, {r1} |
| 39 | ldmfd sp!, {r1} |
39 | ldmfd sp!, {r1} |
| 40 | 40 | ||
| 41 | stmia r0!, {sp, lr} |
41 | stmia r0!, {sp, lr} |
| 42 | stmia r0!, {r4-r11} |
42 | stmia r0!, {r4-r11} |
| 43 | 43 | ||
| 44 | mov r0, #1 |
44 | mov r0, #1 |
| 45 | mov pc, lr |
45 | mov pc, lr |
| 46 | 46 | ||
| 47 | 47 | ||
| 48 | context_restore_arch: |
48 | context_restore_arch: |
| 49 | ldmia r0!, {r4} |
49 | ldmia r0!, {r4} |
| 50 | mrs r5, cpsr |
50 | mrs r5, cpsr |
| 51 | bic r5, r5, #0x1f |
51 | bic r5, r5, #0x1f |
| 52 | orr r5, r5, r4 |
52 | orr r5, r5, r4 |
| 53 | msr cpsr_c, r5 |
53 | msr cpsr_c, r5 |
| 54 | 54 | ||
| 55 | ldmia r0!, {sp, lr} |
55 | ldmia r0!, {sp, lr} |
| 56 | ldmia r0!, {r4-r11} |
56 | ldmia r0!, {r4-r11} |
| 57 | 57 | ||
| 58 | mov r0, #0 |
58 | mov r0, #0 |
| 59 | mov pc, lr |
59 | mov pc, lr |
| 60 | 60 | ||