| 1 | #
|
|---|
| 2 | # Copyright (C) 2005 Martin Decky
|
|---|
| 3 | # All rights reserved.
|
|---|
| 4 | #
|
|---|
| 5 | # Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | # modification, are permitted provided that the following conditions
|
|---|
| 7 | # are met:
|
|---|
| 8 | #
|
|---|
| 9 | # - Redistributions of source code must retain the above copyright
|
|---|
| 10 | # notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | # - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | # notice, this list of conditions and the following disclaimer in the
|
|---|
| 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
|
|---|
| 15 | # derived from this software without specific prior written permission.
|
|---|
| 16 | #
|
|---|
| 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
|
|---|
| 19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 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
|
|---|
| 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
|
|---|
| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | #
|
|---|
| 28 |
|
|---|
| 29 | #include <arch/asm/regname.h>
|
|---|
| 30 | #include <arch/context_offset.h>
|
|---|
| 31 |
|
|---|
| 32 | .text
|
|---|
| 33 |
|
|---|
| 34 | .global context_save_arch
|
|---|
| 35 | .global context_restore_arch
|
|---|
| 36 |
|
|---|
| 37 | .macro CONTEXT_STORE r
|
|---|
| 38 | stw sp, OFFSET_SP(\r)
|
|---|
| 39 | stw r2, OFFSET_R2(\r)
|
|---|
| 40 | stw r13, OFFSET_R13(\r)
|
|---|
| 41 | stw r14, OFFSET_R14(\r)
|
|---|
| 42 | stw r15, OFFSET_R15(\r)
|
|---|
| 43 | stw r16, OFFSET_R16(\r)
|
|---|
| 44 | stw r17, OFFSET_R17(\r)
|
|---|
| 45 | stw r18, OFFSET_R18(\r)
|
|---|
| 46 | stw r19, OFFSET_R19(\r)
|
|---|
| 47 | stw r20, OFFSET_R20(\r)
|
|---|
| 48 | stw r21, OFFSET_R21(\r)
|
|---|
| 49 | stw r22, OFFSET_R22(\r)
|
|---|
| 50 | stw r23, OFFSET_R23(\r)
|
|---|
| 51 | stw r24, OFFSET_R24(\r)
|
|---|
| 52 | stw r25, OFFSET_R25(\r)
|
|---|
| 53 | stw r26, OFFSET_R26(\r)
|
|---|
| 54 | stw r27, OFFSET_R27(\r)
|
|---|
| 55 | stw r28, OFFSET_R28(\r)
|
|---|
| 56 | stw r29, OFFSET_R29(\r)
|
|---|
| 57 | stw r30, OFFSET_R30(\r)
|
|---|
| 58 | stw r31, OFFSET_R31(\r)
|
|---|
| 59 | .endm
|
|---|
| 60 |
|
|---|
| 61 | .macro CONTEXT_LOAD r
|
|---|
| 62 | lwz sp, OFFSET_SP(\r)
|
|---|
| 63 | lwz r2, OFFSET_R2(\r)
|
|---|
| 64 | lwz r13, OFFSET_R13(\r)
|
|---|
| 65 | lwz r14, OFFSET_R14(\r)
|
|---|
| 66 | lwz r15, OFFSET_R15(\r)
|
|---|
| 67 | lwz r16, OFFSET_R16(\r)
|
|---|
| 68 | lwz r17, OFFSET_R17(\r)
|
|---|
| 69 | lwz r18, OFFSET_R18(\r)
|
|---|
| 70 | lwz r19, OFFSET_R19(\r)
|
|---|
| 71 | lwz r20, OFFSET_R20(\r)
|
|---|
| 72 | lwz r21, OFFSET_R21(\r)
|
|---|
| 73 | lwz r22, OFFSET_R22(\r)
|
|---|
| 74 | lwz r23, OFFSET_R23(\r)
|
|---|
| 75 | lwz r24, OFFSET_R24(\r)
|
|---|
| 76 | lwz r25, OFFSET_R25(\r)
|
|---|
| 77 | lwz r26, OFFSET_R26(\r)
|
|---|
| 78 | lwz r27, OFFSET_R27(\r)
|
|---|
| 79 | lwz r28, OFFSET_R28(\r)
|
|---|
| 80 | lwz r29, OFFSET_R29(\r)
|
|---|
| 81 | lwz r30, OFFSET_R30(\r)
|
|---|
| 82 | lwz r31, OFFSET_R31(\r)
|
|---|
| 83 | .endm
|
|---|
| 84 |
|
|---|
| 85 | context_save_arch:
|
|---|
| 86 | CONTEXT_STORE r3
|
|---|
| 87 |
|
|---|
| 88 | mflr r4
|
|---|
| 89 | stw r4, OFFSET_PC(r3)
|
|---|
| 90 |
|
|---|
| 91 | mfcr r4
|
|---|
| 92 | stw r4, OFFSET_CR(r3)
|
|---|
| 93 |
|
|---|
| 94 | # context_save returns 1
|
|---|
| 95 | li r3, 1
|
|---|
| 96 | blr
|
|---|
| 97 |
|
|---|
| 98 | context_restore_arch:
|
|---|
| 99 | CONTEXT_LOAD r3
|
|---|
| 100 |
|
|---|
| 101 | lwz r4, OFFSET_CR(r3)
|
|---|
| 102 | mtcr r4
|
|---|
| 103 |
|
|---|
| 104 | lwz r4, OFFSET_PC(r3)
|
|---|
| 105 | mtlr r4
|
|---|
| 106 |
|
|---|
| 107 | # context_restore returns 0
|
|---|
| 108 | li r3, 0
|
|---|
| 109 | blr
|
|---|
