| 1 | #
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| 2 | # Copyright (c) 2003-2004 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 |
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| 29 | #include <arch/context_struct.h>
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| 30 |
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| 31 | .text
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| 32 |
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| 33 | .set noat
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| 34 | .set noreorder
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| 35 | .set nomacro
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| 36 |
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| 37 | .global context_save_arch
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| 38 | .global context_restore_arch
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| 39 |
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| 40 | context_save_arch:
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| 41 | sw $s0, CONTEXT_OFFSET_S0($a0)
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| 42 | sw $s1, CONTEXT_OFFSET_S1($a0)
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| 43 | sw $s2, CONTEXT_OFFSET_S2($a0)
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| 44 | sw $s3, CONTEXT_OFFSET_S3($a0)
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| 45 | sw $s4, CONTEXT_OFFSET_S4($a0)
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| 46 | sw $s5, CONTEXT_OFFSET_S5($a0)
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| 47 | sw $s6, CONTEXT_OFFSET_S6($a0)
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| 48 | sw $s7, CONTEXT_OFFSET_S7($a0)
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| 49 | sw $s8, CONTEXT_OFFSET_S8($a0)
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| 50 | sw $gp, CONTEXT_OFFSET_GP($a0)
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| 51 |
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| 52 | sw $ra, CONTEXT_OFFSET_PC($a0)
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| 53 | sw $sp, CONTEXT_OFFSET_SP($a0)
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| 54 |
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| 55 | # context_save returns 1
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| 56 | j $31
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| 57 | li $2, 1
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| 58 |
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| 59 | context_restore_arch:
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| 60 | lw $s0, CONTEXT_OFFSET_S0($a0)
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| 61 | lw $s1, CONTEXT_OFFSET_S1($a0)
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| 62 | lw $s2, CONTEXT_OFFSET_S2($a0)
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| 63 | lw $s3, CONTEXT_OFFSET_S3($a0)
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| 64 | lw $s4, CONTEXT_OFFSET_S4($a0)
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| 65 | lw $s5, CONTEXT_OFFSET_S5($a0)
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| 66 | lw $s6, CONTEXT_OFFSET_S6($a0)
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| 67 | lw $s7, CONTEXT_OFFSET_S7($a0)
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| 68 | lw $s8, CONTEXT_OFFSET_S8($a0)
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| 69 | lw $gp, CONTEXT_OFFSET_GP($a0)
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| 70 |
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| 71 | lw $ra, CONTEXT_OFFSET_PC($a0)
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| 72 | lw $sp, CONTEXT_OFFSET_SP($a0)
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| 73 |
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| 74 | # context_restore returns 0
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| 75 | j $31
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| 76 | xor $2, $2
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