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| Rev | Author | Line No. | Line |
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| 529 | jermar | 1 | # |
| 2 | # Copyright (C) 2005 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 | |||
| 29 | /** |
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| 634 | jermar | 30 | * This file contains two trap tables. |
| 31 | * First, trap_table, is the one wich contains handlers implemented by |
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| 32 | * kernel. During initialization, these handlers are copied out to |
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| 33 | * the second trap table, trap_table_save, and the first table is |
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| 34 | * overwritten with copy of OFW's own trap table. The copy is then patched |
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| 35 | * from the trap_table_save. |
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| 36 | * |
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| 37 | * This arrangement is beneficial because kernel handlers stay on their |
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| 38 | * link-time addresses which is good for debugging. |
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| 529 | jermar | 39 | */ |
| 40 | |||
| 41 | .text |
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| 42 | |||
| 630 | jermar | 43 | #include <arch/trap/trap_table.h> |
| 44 | #include <arch/trap/regwin.h> |
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| 529 | jermar | 45 | |
| 46 | #define TABLE_SIZE TRAP_TABLE_SIZE |
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| 47 | #define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
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| 48 | |||
| 49 | /* |
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| 634 | jermar | 50 | * Kernel trap table. |
| 529 | jermar | 51 | */ |
| 52 | .align TABLE_SIZE |
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| 53 | .global trap_table |
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| 54 | trap_table: |
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| 55 | |||
| 630 | jermar | 56 | /* TT = 0x24, TL = 0 *, clean_window handler */ |
| 634 | jermar | 57 | .org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
| 630 | jermar | 58 | .global clean_window_handler |
| 59 | clean_window_handler: |
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| 60 | CLEAN_WINDOW_HANDLER |
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| 529 | jermar | 61 | |
| 630 | jermar | 62 | /* TT = 0x80, TL = 0 *, spill_0_normal handler */ |
| 634 | jermar | 63 | .org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
| 630 | jermar | 64 | .global spill_0_normal |
| 65 | spill_0_normal: |
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| 66 | SPILL_NORMAL_HANDLER |
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| 529 | jermar | 67 | |
| 630 | jermar | 68 | /* TT = 0xc0, TL = 0 *, fill_0_normal handler */ |
| 634 | jermar | 69 | .org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
| 630 | jermar | 70 | fill_0_normal: |
| 71 | FILL_NORMAL_HANDLER |
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| 72 | |||
| 529 | jermar | 73 | /* |
| 74 | * Software traps for TL=0. |
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| 75 | */ |
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| 634 | jermar | 76 | .org trap_table + 256*ENTRY_SIZE |
| 529 | jermar | 77 | tl_0_software_traps: |
| 78 | |||
| 79 | /* Reserved area. */ |
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| 634 | jermar | 80 | .org trap_table + 384*ENTRY_SIZE |
| 529 | jermar | 81 | .space 128*ENTRY_SIZE, 0 |
| 82 | |||
| 83 | /* |
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| 84 | * Hardware interrupts for TL>0. |
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| 85 | */ |
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| 634 | jermar | 86 | .org trap_table + 512*ENTRY_SIZE |
| 529 | jermar | 87 | tl_non_0_hardware_traps: |
| 88 | |||
| 89 | /* |
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| 630 | jermar | 90 | * Register window spill/fill traps for TL>0. |
| 529 | jermar | 91 | */ |
| 634 | jermar | 92 | .org trap_table + 640*ENTRY_SIZE |
| 529 | jermar | 93 | tl_non_0_regwin_traps: |
| 94 | |||
| 95 | /* |
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| 96 | * Software traps for TL>0. |
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| 97 | */ |
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| 634 | jermar | 98 | .org trap_table + 768*ENTRY_SIZE |
| 529 | jermar | 99 | tl_non_0_software_traps: |
| 100 | |||
| 101 | /* Reserved area. */ |
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| 634 | jermar | 102 | .org trap_table + 896*ENTRY_SIZE |
| 529 | jermar | 103 | .space 128*ENTRY_SIZE, 0 |
| 634 | jermar | 104 | |
| 105 | |||
| 106 | /* |
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| 107 | * Save trap table. |
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| 108 | */ |
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| 109 | .global trap_table_save |
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| 110 | trap_table_save: |
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| 111 | .space TABLE_SIZE, 0 |