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| Rev | Author | Line No. | Line |
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| 426 | jermar | 1 | # |
| 2 | # Copyright (C) 2005 Jakub Jermar |
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| 3 | # All rights reserved. |
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| 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 | |||
| 29 | #include <arch/context_offset.h> |
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| 525 | jermar | 30 | #include <arch/stack.h> |
| 426 | jermar | 31 | |
| 32 | .text |
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| 33 | |||
| 34 | .global context_save_arch |
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| 35 | .global context_restore_arch |
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| 36 | |||
| 37 | .macro CONTEXT_STORE r |
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| 38 | stx %i1, [\r + OFFSET_I1] |
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| 39 | stx %i2, [\r + OFFSET_I2] |
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| 40 | stx %i3, [\r + OFFSET_I3] |
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| 41 | stx %i4, [\r + OFFSET_I4] |
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| 42 | stx %i5, [\r + OFFSET_I5] |
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| 526 | jermar | 43 | stx %fp, [\r + OFFSET_FP] |
| 426 | jermar | 44 | stx %i7, [\r + OFFSET_PC] |
| 526 | jermar | 45 | stx %sp, [\r + OFFSET_SP] |
| 426 | jermar | 46 | .endm |
| 47 | |||
| 48 | .macro CONTEXT_LOAD r |
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| 49 | ldx [\r + OFFSET_I1], %i1 |
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| 50 | ldx [\r + OFFSET_I2], %i2 |
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| 51 | ldx [\r + OFFSET_I3], %i3 |
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| 52 | ldx [\r + OFFSET_I4], %i4 |
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| 53 | ldx [\r + OFFSET_I5], %i5 |
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| 526 | jermar | 54 | ldx [\r + OFFSET_FP], %fp |
| 426 | jermar | 55 | ldx [\r + OFFSET_PC], %i7 |
| 56 | ldx [\r + OFFSET_SP], %sp |
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| 57 | .endm |
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| 58 | |||
| 59 | |||
| 60 | context_save_arch: |
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| 525 | jermar | 61 | save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
| 426 | jermar | 62 | CONTEXT_STORE %i0 |
| 63 | |||
| 64 | # context_save returns 1 |
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| 526 | jermar | 65 | mov 1, %i0 |
| 426 | jermar | 66 | ret |
| 526 | jermar | 67 | restore %sp, STACK_WINDOW_SAVE_AREA_SIZE, %sp |
| 68 | |||
| 426 | jermar | 69 | context_restore_arch: |
| 525 | jermar | 70 | save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
| 426 | jermar | 71 | CONTEXT_LOAD %i0 |
| 72 | |||
| 73 | # context_restore returns 0 |
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| 526 | jermar | 74 | xor %i0, %i0, %i0 |
| 426 | jermar | 75 | ret |
| 526 | jermar | 76 | restore %sp, STACK_WINDOW_SAVE_AREA_SIZE, %sp |