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| 1 | # |
1 | # |
| 2 | # Copyright (C) 2005 Jakub Jermar |
2 | # Copyright (C) 2005 Jakub Jermar |
| 3 | # All rights reserved. |
3 | # All rights reserved. |
| 4 | # |
4 | # |
| 5 | # Redistribution and use in source and binary forms, with or without |
5 | # Redistribution and use in source and binary forms, with or without |
| 6 | # modification, are permitted provided that the following conditions |
6 | # modification, are permitted provided that the following conditions |
| 7 | # are met: |
7 | # are met: |
| 8 | # |
8 | # |
| 9 | # - Redistributions of source code must retain the above copyright |
9 | # - Redistributions of source code must retain the above copyright |
| 10 | # notice, this list of conditions and the following disclaimer. |
10 | # notice, this list of conditions and the following disclaimer. |
| 11 | # - Redistributions in binary form must reproduce the above copyright |
11 | # - Redistributions in binary form must reproduce the above copyright |
| 12 | # notice, this list of conditions and the following disclaimer in the |
12 | # notice, this list of conditions and the following disclaimer in the |
| 13 | # documentation and/or other materials provided with the distribution. |
13 | # documentation and/or other materials provided with the distribution. |
| 14 | # - The name of the author may not be used to endorse or promote products |
14 | # - The name of the author may not be used to endorse or promote products |
| 15 | # derived from this software without specific prior written permission. |
15 | # derived from this software without specific prior written permission. |
| 16 | # |
16 | # |
| 17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | # |
27 | # |
| 28 | 28 | ||
| 29 | /** |
29 | /** |
| 30 | * This file contains two trap tables. |
30 | * This file contains two trap tables. |
| 31 | * First, trap_table, is the one wich contains handlers implemented by |
31 | * First, trap_table, is the one wich contains handlers implemented by |
| 32 | * kernel. During initialization, these handlers are copied out to |
32 | * kernel. During initialization, these handlers are copied out to |
| 33 | * the second trap table, trap_table_save, and the first table is |
33 | * the second trap table, trap_table_save, and the first table is |
| 34 | * overwritten with copy of OFW's own trap table. The copy is then patched |
34 | * overwritten with copy of OFW's own trap table. The copy is then patched |
| 35 | * from the trap_table_save. |
35 | * from the trap_table_save. |
| 36 | * |
36 | * |
| 37 | * This arrangement is beneficial because kernel handlers stay on their |
37 | * This arrangement is beneficial because kernel handlers stay on their |
| 38 | * link-time addresses which is good for debugging. |
38 | * link-time addresses which is good for debugging. |
| 39 | */ |
39 | */ |
| 40 | 40 | ||
| 41 | .text |
41 | .text |
| 42 | 42 | ||
| 43 | #include <arch/trap/trap_table.h> |
43 | #include <arch/trap/trap_table.h> |
| 44 | #include <arch/trap/regwin.h> |
44 | #include <arch/trap/regwin.h> |
| 45 | #include <arch/trap/interrupt.h> |
45 | #include <arch/trap/interrupt.h> |
| 46 | 46 | ||
| 47 | #define TABLE_SIZE TRAP_TABLE_SIZE |
47 | #define TABLE_SIZE TRAP_TABLE_SIZE |
| 48 | #define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
48 | #define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
| 49 | 49 | ||
| 50 | /* |
50 | /* |
| 51 | * Kernel trap table. |
51 | * Kernel trap table. |
| 52 | */ |
52 | */ |
| 53 | .align TABLE_SIZE |
53 | .align TABLE_SIZE |
| 54 | .global trap_table |
54 | .global trap_table |
| 55 | trap_table: |
55 | trap_table: |
| 56 | 56 | ||
| 57 | /* TT = 0x24, TL = 0, clean_window handler */ |
57 | /* TT = 0x24, TL = 0, clean_window handler */ |
| 58 | .org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
58 | .org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
| 59 | .global clean_window_handler |
59 | .global clean_window_handler |
| 60 | clean_window_handler: |
60 | clean_window_handler: |
| 61 | CLEAN_WINDOW_HANDLER |
61 | CLEAN_WINDOW_HANDLER |
| 62 | 62 | ||
| - | 63 | /* TT = 0x41, TL = 0, interrupt_level_1 handler */ |
|
| - | 64 | .org trap_table + TT_INTERRUPT_LEVEL_1*ENTRY_SIZE |
|
| - | 65 | .global interrupt_level_1_handler |
|
| - | 66 | interrupt_level_1_handler: |
|
| - | 67 | INTERRUPT_LEVEL_N_HANDLER 1 |
|
| - | 68 | ||
| - | 69 | /* TT = 0x42, TL = 0, interrupt_level_2 handler */ |
|
| - | 70 | .org trap_table + TT_INTERRUPT_LEVEL_2*ENTRY_SIZE |
|
| - | 71 | .global interrupt_level_2_handler |
|
| - | 72 | interrupt_level_2_handler: |
|
| - | 73 | INTERRUPT_LEVEL_N_HANDLER 2 |
|
| - | 74 | ||
| - | 75 | /* TT = 0x43, TL = 0, interrupt_level_3 handler */ |
|
| - | 76 | .org trap_table + TT_INTERRUPT_LEVEL_3*ENTRY_SIZE |
|
| - | 77 | .global interrupt_level_3_handler |
|
| - | 78 | interrupt_level_3_handler: |
|
| - | 79 | INTERRUPT_LEVEL_N_HANDLER 3 |
|
| - | 80 | ||
| - | 81 | /* TT = 0x44, TL = 0, interrupt_level_4 handler */ |
|
| - | 82 | .org trap_table + TT_INTERRUPT_LEVEL_4*ENTRY_SIZE |
|
| - | 83 | .global interrupt_level_4_handler |
|
| - | 84 | interrupt_level_4_handler: |
|
| - | 85 | INTERRUPT_LEVEL_N_HANDLER 4 |
|
| - | 86 | ||
| - | 87 | /* TT = 0x45, TL = 0, interrupt_level_5 handler */ |
|
| - | 88 | .org trap_table + TT_INTERRUPT_LEVEL_5*ENTRY_SIZE |
|
| - | 89 | .global interrupt_level_5_handler |
|
| - | 90 | interrupt_level_5_handler: |
|
| - | 91 | INTERRUPT_LEVEL_N_HANDLER 5 |
|
| - | 92 | ||
| - | 93 | /* TT = 0x46, TL = 0, interrupt_level_6 handler */ |
|
| - | 94 | .org trap_table + TT_INTERRUPT_LEVEL_6*ENTRY_SIZE |
|
| - | 95 | .global interrupt_level_6_handler |
|
| - | 96 | interrupt_level_6_handler: |
|
| - | 97 | INTERRUPT_LEVEL_N_HANDLER 6 |
|
| - | 98 | ||
| - | 99 | /* TT = 0x47, TL = 0, interrupt_level_7 handler */ |
|
| - | 100 | .org trap_table + TT_INTERRUPT_LEVEL_7*ENTRY_SIZE |
|
| - | 101 | .global interrupt_level_7_handler |
|
| - | 102 | interrupt_level_7_handler: |
|
| - | 103 | INTERRUPT_LEVEL_N_HANDLER 7 |
|
| - | 104 | ||
| - | 105 | /* TT = 0x48, TL = 0, interrupt_level_8 handler */ |
|
| - | 106 | .org trap_table + TT_INTERRUPT_LEVEL_8*ENTRY_SIZE |
|
| - | 107 | .global interrupt_level_8_handler |
|
| - | 108 | interrupt_level_8_handler: |
|
| - | 109 | INTERRUPT_LEVEL_N_HANDLER 8 |
|
| - | 110 | ||
| - | 111 | /* TT = 0x49, TL = 0, interrupt_level_9 handler */ |
|
| - | 112 | .org trap_table + TT_INTERRUPT_LEVEL_9*ENTRY_SIZE |
|
| - | 113 | .global interrupt_level_9_handler |
|
| - | 114 | interrupt_level_9_handler: |
|
| - | 115 | INTERRUPT_LEVEL_N_HANDLER 9 |
|
| - | 116 | ||
| - | 117 | /* TT = 0x4a, TL = 0, interrupt_level_10 handler */ |
|
| - | 118 | .org trap_table + TT_INTERRUPT_LEVEL_10*ENTRY_SIZE |
|
| - | 119 | .global interrupt_level_10_handler |
|
| - | 120 | interrupt_level_10_handler: |
|
| - | 121 | INTERRUPT_LEVEL_N_HANDLER 10 |
|
| - | 122 | ||
| - | 123 | /* TT = 0x4b, TL = 0, interrupt_level_11 handler */ |
|
| - | 124 | .org trap_table + TT_INTERRUPT_LEVEL_11*ENTRY_SIZE |
|
| - | 125 | .global interrupt_level_11_handler |
|
| - | 126 | interrupt_level_11_handler: |
|
| - | 127 | INTERRUPT_LEVEL_N_HANDLER 11 |
|
| - | 128 | ||
| - | 129 | /* TT = 0x4c, TL = 0, interrupt_level_12 handler */ |
|
| - | 130 | .org trap_table + TT_INTERRUPT_LEVEL_12*ENTRY_SIZE |
|
| - | 131 | .global interrupt_level_12_handler |
|
| - | 132 | interrupt_level_12_handler: |
|
| - | 133 | INTERRUPT_LEVEL_N_HANDLER 12 |
|
| - | 134 | ||
| - | 135 | /* TT = 0x4d, TL = 0, interrupt_level_13 handler */ |
|
| - | 136 | .org trap_table + TT_INTERRUPT_LEVEL_13*ENTRY_SIZE |
|
| - | 137 | .global interrupt_level_13_handler |
|
| - | 138 | interrupt_level_13_handler: |
|
| - | 139 | INTERRUPT_LEVEL_N_HANDLER 13 |
|
| - | 140 | ||
| - | 141 | /* TT = 0x4e, TL = 0, interrupt_level_14 handler */ |
|
| - | 142 | .org trap_table + TT_INTERRUPT_LEVEL_14*ENTRY_SIZE |
|
| - | 143 | .global interrupt_level_14_handler |
|
| - | 144 | interrupt_level_14_handler: |
|
| - | 145 | INTERRUPT_LEVEL_N_HANDLER 14 |
|
| - | 146 | ||
| - | 147 | /* TT = 0x4f, TL = 0, interrupt_level_15 handler */ |
|
| - | 148 | .org trap_table + TT_INTERRUPT_LEVEL_15*ENTRY_SIZE |
|
| - | 149 | .global interrupt_level_15_handler |
|
| - | 150 | interrupt_level_15_handler: |
|
| - | 151 | INTERRUPT_LEVEL_N_HANDLER 15 |
|
| - | 152 | ||
| 63 | /* TT = 0x60, TL = 0, interrupt_vector_trap handler */ |
153 | /* TT = 0x60, TL = 0, interrupt_vector_trap handler */ |
| 64 | .org trap_table + TT_INTERRUPT_VECTOR_TRAP*ENTRY_SIZE |
154 | .org trap_table + TT_INTERRUPT_VECTOR_TRAP*ENTRY_SIZE |
| 65 | .global interrupt_vector_trap_handler |
155 | .global interrupt_vector_trap_handler |
| 66 | interrupt_vector_trap_handler: |
156 | interrupt_vector_trap_handler: |
| 67 | INTERRUPT_VECTOR_TRAP_HANDLER |
157 | INTERRUPT_VECTOR_TRAP_HANDLER |
| 68 | 158 | ||
| 69 | /* TT = 0x80, TL = 0, spill_0_normal handler */ |
159 | /* TT = 0x80, TL = 0, spill_0_normal handler */ |
| 70 | .org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
160 | .org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
| 71 | .global spill_0_normal |
161 | .global spill_0_normal |
| 72 | spill_0_normal: |
162 | spill_0_normal: |
| 73 | SPILL_NORMAL_HANDLER |
163 | SPILL_NORMAL_HANDLER |
| 74 | 164 | ||
| 75 | /* TT = 0xc0, TL = 0, fill_0_normal handler */ |
165 | /* TT = 0xc0, TL = 0, fill_0_normal handler */ |
| 76 | .org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
166 | .org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
| 77 | .global fill_0_normal |
167 | .global fill_0_normal |
| 78 | fill_0_normal: |
168 | fill_0_normal: |
| 79 | FILL_NORMAL_HANDLER |
169 | FILL_NORMAL_HANDLER |
| 80 | 170 | ||
| 81 | /* |
171 | /* |
| 82 | * Handlers for TL>0. |
172 | * Handlers for TL>0. |
| 83 | */ |
173 | */ |
| 84 | 174 | ||
| 85 | /* TT = 0x24, TL > 0, clean_window handler */ |
175 | /* TT = 0x24, TL > 0, clean_window handler */ |
| 86 | .org trap_table + (TT_CLEAN_WINDOW+512)*ENTRY_SIZE |
176 | .org trap_table + (TT_CLEAN_WINDOW+512)*ENTRY_SIZE |
| 87 | .global clean_window_handler_high |
177 | .global clean_window_handler_high |
| 88 | clean_window_handler_high: |
178 | clean_window_handler_high: |
| 89 | CLEAN_WINDOW_HANDLER |
179 | CLEAN_WINDOW_HANDLER |
| 90 | 180 | ||
| 91 | 181 | ||
| 92 | /* TT = 0x80, TL > 0, spill_0_normal handler */ |
182 | /* TT = 0x80, TL > 0, spill_0_normal handler */ |
| 93 | 183 | ||
| 94 | .org trap_table + (TT_SPILL_0_NORMAL+512)*ENTRY_SIZE |
184 | .org trap_table + (TT_SPILL_0_NORMAL+512)*ENTRY_SIZE |
| 95 | .global spill_0_normal_high |
185 | .global spill_0_normal_high |
| 96 | spill_0_normal_high: |
186 | spill_0_normal_high: |
| 97 | SPILL_NORMAL_HANDLER |
187 | SPILL_NORMAL_HANDLER |
| 98 | 188 | ||
| 99 | 189 | ||
| 100 | /* TT = 0xc0, TL > 0, fill_0_normal handler */ |
190 | /* TT = 0xc0, TL > 0, fill_0_normal handler */ |
| 101 | .org trap_table + (TT_FILL_0_NORMAL+512)*ENTRY_SIZE |
191 | .org trap_table + (TT_FILL_0_NORMAL+512)*ENTRY_SIZE |
| 102 | .global fill_0_normal_high |
192 | .global fill_0_normal_high |
| 103 | fill_0_normal_high: |
193 | fill_0_normal_high: |
| 104 | FILL_NORMAL_HANDLER |
194 | FILL_NORMAL_HANDLER |
| 105 | 195 | ||
| 106 | 196 | ||
| 107 | 197 | ||
| 108 | /* |
198 | /* |
| 109 | * Save trap table. |
199 | * Save trap table. |
| 110 | */ |
200 | */ |
| 111 | .align TABLE_SIZE |
201 | .align TABLE_SIZE |
| 112 | .global trap_table_save |
202 | .global trap_table_save |
| 113 | trap_table_save: |
203 | trap_table_save: |
| 114 | .space TABLE_SIZE, 0 |
204 | .space TABLE_SIZE, 0 |
| 115 | 205 | ||