| 0,0 → 1,110 |
|---|
| # |
| # Copyright (c) 2006 Martin Decky |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| .text |
| |
| .global context_save |
| .global context_restore |
| |
| #include <libarch/regname.h> |
| #include <libarch/context_offset.h> |
| |
| .macro CONTEXT_STORE r |
| stw sp, OFFSET_SP(\r) |
| stw r2, OFFSET_R2(\r) |
| stw r13, OFFSET_R13(\r) |
| stw r14, OFFSET_R14(\r) |
| stw r15, OFFSET_R15(\r) |
| stw r16, OFFSET_R16(\r) |
| stw r17, OFFSET_R17(\r) |
| stw r18, OFFSET_R18(\r) |
| stw r19, OFFSET_R19(\r) |
| stw r20, OFFSET_R20(\r) |
| stw r21, OFFSET_R21(\r) |
| stw r22, OFFSET_R22(\r) |
| stw r23, OFFSET_R23(\r) |
| stw r24, OFFSET_R24(\r) |
| stw r25, OFFSET_R25(\r) |
| stw r26, OFFSET_R26(\r) |
| stw r27, OFFSET_R27(\r) |
| stw r28, OFFSET_R28(\r) |
| stw r29, OFFSET_R29(\r) |
| stw r30, OFFSET_R30(\r) |
| stw r31, OFFSET_R31(\r) |
| .endm |
| |
| .macro CONTEXT_LOAD r |
| lwz sp, OFFSET_SP(\r) |
| lwz r2, OFFSET_R2(\r) |
| lwz r13, OFFSET_R13(\r) |
| lwz r14, OFFSET_R14(\r) |
| lwz r15, OFFSET_R15(\r) |
| lwz r16, OFFSET_R16(\r) |
| lwz r17, OFFSET_R17(\r) |
| lwz r18, OFFSET_R18(\r) |
| lwz r19, OFFSET_R19(\r) |
| lwz r20, OFFSET_R20(\r) |
| lwz r21, OFFSET_R21(\r) |
| lwz r22, OFFSET_R22(\r) |
| lwz r23, OFFSET_R23(\r) |
| lwz r24, OFFSET_R24(\r) |
| lwz r25, OFFSET_R25(\r) |
| lwz r26, OFFSET_R26(\r) |
| lwz r27, OFFSET_R27(\r) |
| lwz r28, OFFSET_R28(\r) |
| lwz r29, OFFSET_R29(\r) |
| lwz r30, OFFSET_R30(\r) |
| lwz r31, OFFSET_R31(\r) |
| .endm |
| |
| context_save: |
| CONTEXT_STORE r3 |
| |
| mflr r4 |
| stw r4, OFFSET_PC(r3) |
| |
| mfcr r4 |
| stw r4, OFFSET_CR(r3) |
| |
| # context_save returns 1 |
| li r3, 1 |
| blr |
| |
| |
| context_restore: |
| CONTEXT_LOAD r3 |
| |
| lwz r4, OFFSET_CR(r3) |
| mtcr r4 |
| |
| lwz r4, OFFSET_PC(r3) |
| mtlr r4 |
| |
| # context_restore returns 0 |
| li r3, 0 |
| blr |