| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2015 Travis Geiselbrecht |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining |
| 5 | * a copy of this software and associated documentation files |
| 6 | * (the "Software"), to deal in the Software without restriction, |
| 7 | * including without limitation the rights to use, copy, modify, merge, |
| 8 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 9 | * and to permit persons to whom the Software is furnished to do so, |
| 10 | * subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be |
| 13 | * included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 19 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 20 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 21 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 22 | */ |
| 23 | #include <asm.h> |
| 24 | |
| 25 | /* void microblaze_context_switch( |
| 26 | struct microblaze_context_switch_frame *oldcs, |
| 27 | struct microblaze_context_switch_frame *newcs); */ |
| 28 | FUNCTION(microblaze_context_switch) |
| 29 | # r5 = oldcs |
| 30 | # r6 = newcs |
| 31 | swi r1, r5, 0x0 |
| 32 | swi r2, r5, 0x4 |
| 33 | swi r13, r5, 0x8 |
| 34 | swi r14, r5, 0xc |
| 35 | swi r15, r5, 0x10 |
| 36 | swi r16, r5, 0x14 |
| 37 | swi r17, r5, 0x18 |
| 38 | swi r18, r5, 0x1c |
| 39 | swi r19, r5, 0x20 |
| 40 | swi r20, r5, 0x24 |
| 41 | swi r21, r5, 0x28 |
| 42 | swi r22, r5, 0x2c |
| 43 | swi r23, r5, 0x30 |
| 44 | swi r24, r5, 0x34 |
| 45 | swi r25, r5, 0x38 |
| 46 | swi r26, r5, 0x3c |
| 47 | swi r27, r5, 0x40 |
| 48 | swi r28, r5, 0x44 |
| 49 | swi r29, r5, 0x48 |
| 50 | swi r30, r5, 0x4c |
| 51 | swi r31, r5, 0x50 |
| 52 | |
| 53 | # restore the new context |
| 54 | lwi r31, r6, 0x50 |
| 55 | lwi r30, r6, 0x4c |
| 56 | lwi r29, r6, 0x48 |
| 57 | lwi r28, r6, 0x44 |
| 58 | lwi r27, r6, 0x40 |
| 59 | lwi r26, r6, 0x3c |
| 60 | lwi r25, r6, 0x38 |
| 61 | lwi r24, r6, 0x34 |
| 62 | lwi r23, r6, 0x30 |
| 63 | lwi r22, r6, 0x2c |
| 64 | lwi r21, r6, 0x28 |
| 65 | lwi r20, r6, 0x24 |
| 66 | lwi r19, r6, 0x20 |
| 67 | lwi r18, r6, 0x1c |
| 68 | lwi r17, r6, 0x18 |
| 69 | lwi r16, r6, 0x14 |
| 70 | lwi r15, r6, 0x10 |
| 71 | lwi r14, r6, 0xc |
| 72 | lwi r13, r6, 0x8 |
| 73 | lwi r2, r6, 0x4 |
| 74 | lwi r1, r6, 0x0 |
| 75 | |
| 76 | rtsd r15, 8 |
| 77 | nop |
| 78 | |