Rev 2860 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1797 | decky | 1 | # |
| 2071 | jermar | 2 | # Copyright (c) 2005 Jakub Jermar |
| 1797 | decky | 3 | # All rights reserved. |
| 4 | # |
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| 5 | # Redistribution and use in source and binary forms, with or without |
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| 6 | # modification, are permitted provided that the following conditions |
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| 7 | # are met: |
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| 8 | # |
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| 9 | # - Redistributions of source code must retain the above copyright |
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| 10 | # notice, this list of conditions and the following disclaimer. |
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| 11 | # - Redistributions in binary form must reproduce the above copyright |
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| 12 | # notice, this list of conditions and the following disclaimer in the |
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| 13 | # documentation and/or other materials provided with the distribution. |
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| 14 | # - The name of the author may not be used to endorse or promote products |
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| 15 | # derived from this software without specific prior written permission. |
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| 16 | # |
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| 17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | # |
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| 28 | |||
| 2860 | cejka | 29 | #include <kernel/arch/context_offset.h> |
| 1797 | decky | 30 | |
| 1864 | jermar | 31 | .text |
| 32 | |||
| 1797 | decky | 33 | .global context_save |
| 34 | .global context_restore |
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| 35 | |||
| 36 | context_save: |
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| 2860 | cejka | 37 | CONTEXT_SAVE_ARCH_CORE %o0 |
| 1864 | jermar | 38 | retl |
| 39 | mov 1, %o0 ! context_save_arch returns 1 |
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| 1797 | decky | 40 | |
| 41 | context_restore: |
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| 1864 | jermar | 42 | # |
| 43 | # Flush all active windows. |
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| 44 | # This is essential, because CONTEXT_LOAD overwrites |
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| 45 | # %sp of CWP - 1 with the value written to %fp of CWP. |
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| 46 | # Flushing all active windows mitigates this problem |
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| 47 | # as CWP - 1 becomes the overlap window. |
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| 48 | # |
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| 49 | flushw |
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| 50 | |||
| 2860 | cejka | 51 | CONTEXT_RESTORE_ARCH_CORE %o0 |
| 1864 | jermar | 52 | retl |
| 53 | xor %o0, %o0, %o0 ! context_restore_arch returns 0 |