Rev 2071 | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
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1160 | decky | 1 | # |
2071 | jermar | 2 | # Copyright (c) 2005 Martin Decky |
1160 | decky | 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 | |||
29 | #include <arch/asm/regname.h> |
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30 | #include <arch/context_offset.h> |
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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 | stw sp, OFFSET_SP(\r) |
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39 | stw r2, OFFSET_R2(\r) |
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40 | stw r13, OFFSET_R13(\r) |
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41 | stw r14, OFFSET_R14(\r) |
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42 | stw r15, OFFSET_R15(\r) |
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43 | stw r16, OFFSET_R16(\r) |
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44 | stw r17, OFFSET_R17(\r) |
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45 | stw r18, OFFSET_R18(\r) |
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46 | stw r19, OFFSET_R19(\r) |
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47 | stw r20, OFFSET_R20(\r) |
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48 | stw r21, OFFSET_R21(\r) |
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49 | stw r22, OFFSET_R22(\r) |
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50 | stw r23, OFFSET_R23(\r) |
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51 | stw r24, OFFSET_R24(\r) |
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52 | stw r25, OFFSET_R25(\r) |
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53 | stw r26, OFFSET_R26(\r) |
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54 | stw r27, OFFSET_R27(\r) |
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55 | stw r28, OFFSET_R28(\r) |
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56 | stw r29, OFFSET_R29(\r) |
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57 | stw r30, OFFSET_R30(\r) |
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58 | stw r31, OFFSET_R31(\r) |
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59 | .endm |
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60 | |||
61 | .macro CONTEXT_LOAD r |
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62 | lwz sp, OFFSET_SP(\r) |
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63 | lwz r2, OFFSET_R2(\r) |
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64 | lwz r13, OFFSET_R13(\r) |
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65 | lwz r14, OFFSET_R14(\r) |
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66 | lwz r15, OFFSET_R15(\r) |
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67 | lwz r16, OFFSET_R16(\r) |
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68 | lwz r17, OFFSET_R17(\r) |
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69 | lwz r18, OFFSET_R18(\r) |
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70 | lwz r19, OFFSET_R19(\r) |
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71 | lwz r20, OFFSET_R20(\r) |
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72 | lwz r21, OFFSET_R21(\r) |
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73 | lwz r22, OFFSET_R22(\r) |
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74 | lwz r23, OFFSET_R23(\r) |
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75 | lwz r24, OFFSET_R24(\r) |
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76 | lwz r25, OFFSET_R25(\r) |
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77 | lwz r26, OFFSET_R26(\r) |
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78 | lwz r27, OFFSET_R27(\r) |
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79 | lwz r28, OFFSET_R28(\r) |
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80 | lwz r29, OFFSET_R29(\r) |
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81 | lwz r30, OFFSET_R30(\r) |
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82 | lwz r31, OFFSET_R31(\r) |
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83 | .endm |
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84 | |||
85 | context_save_arch: |
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86 | CONTEXT_STORE r3 |
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87 | |||
88 | mflr r4 |
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89 | stw r4, OFFSET_PC(r3) |
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90 | |||
91 | mfcr r4 |
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92 | stw r4, OFFSET_CR(r3) |
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93 | |||
94 | # context_save returns 1 |
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95 | li r3, 1 |
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96 | blr |
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97 | |||
98 | context_restore_arch: |
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99 | CONTEXT_LOAD r3 |
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100 | |||
101 | lwz r4, OFFSET_CR(r3) |
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102 | mtcr r4 |
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103 | |||
104 | lwz r4, OFFSET_PC(r3) |
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105 | mtlr r4 |
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106 | |||
107 | # context_restore returns 0 |
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108 | li r3, 0 |
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109 | blr |