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| 1 | jermar | 1 | # |
| 319 | jermar | 2 | # Copyright (C) 2003-2004 Jakub Jermar |
| 1 | jermar | 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 | |||
| 306 | palkovsky | 29 | #include <arch/asm/regname.h> |
| 317 | palkovsky | 30 | #include <arch/context_offset.h> |
| 306 | palkovsky | 31 | |
| 1 | jermar | 32 | .text |
| 33 | |||
| 34 | .set noat |
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| 35 | .set noreorder |
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| 36 | .set nomacro |
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| 37 | |||
| 414 | jermar | 38 | .global context_save_arch |
| 39 | .global context_restore_arch |
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| 1 | jermar | 40 | |
| 306 | palkovsky | 41 | .macro CONTEXT_STORE r |
| 42 | sw $s0,OFFSET_S0(\r) |
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| 43 | sw $s1,OFFSET_S1(\r) |
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| 44 | sw $s2,OFFSET_S2(\r) |
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| 45 | sw $s3,OFFSET_S3(\r) |
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| 46 | sw $s4,OFFSET_S4(\r) |
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| 47 | sw $s5,OFFSET_S5(\r) |
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| 48 | sw $s6,OFFSET_S6(\r) |
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| 49 | sw $s7,OFFSET_S7(\r) |
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| 50 | sw $s8,OFFSET_S7(\r) |
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| 51 | sw $gp,OFFSET_GP(\r) |
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| 52 | |||
| 53 | sw $ra,OFFSET_PC(\r) |
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| 54 | sw $sp,OFFSET_SP(\r) |
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| 55 | .endm |
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| 56 | |||
| 57 | .macro CONTEXT_LOAD r |
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| 58 | lw $s0,OFFSET_S0(\r) |
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| 59 | lw $s1,OFFSET_S1(\r) |
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| 60 | lw $s2,OFFSET_S2(\r) |
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| 61 | lw $s3,OFFSET_S3(\r) |
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| 62 | lw $s4,OFFSET_S4(\r) |
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| 63 | lw $s5,OFFSET_S5(\r) |
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| 64 | lw $s6,OFFSET_S6(\r) |
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| 65 | lw $s7,OFFSET_S7(\r) |
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| 66 | lw $s8,OFFSET_S7(\r) |
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| 67 | lw $gp,OFFSET_GP(\r) |
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| 68 | |||
| 69 | lw $ra,OFFSET_PC(\r) |
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| 70 | lw $sp,OFFSET_SP(\r) |
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| 71 | .endm |
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| 72 | |||
| 73 | |||
| 414 | jermar | 74 | context_save_arch: |
| 306 | palkovsky | 75 | CONTEXT_STORE $a0 |
| 1 | jermar | 76 | |
| 77 | # context_save returns 1 |
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| 78 | j $31 |
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| 79 | li $2, 1 |
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| 80 | |||
| 414 | jermar | 81 | context_restore_arch: |
| 306 | palkovsky | 82 | CONTEXT_LOAD $a0 |
| 1 | jermar | 83 | |
| 84 | # context_restore returns 0 |
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| 85 | j $31 |
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| 86 | xor $2, $2 |