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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 kernel trap table. |
30 | * This file contains kernel trap table. |
31 | */ |
31 | */ |
32 | 32 | ||
33 | .register %g2, #scratch |
33 | .register %g2, #scratch |
34 | .register %g3, #scratch |
34 | .register %g3, #scratch |
35 | 35 | ||
36 | .text |
36 | .text |
37 | 37 | ||
38 | #include <arch/trap/trap_table.h> |
38 | #include <arch/trap/trap_table.h> |
39 | #include <arch/trap/regwin.h> |
39 | #include <arch/trap/regwin.h> |
40 | #include <arch/trap/interrupt.h> |
40 | #include <arch/trap/interrupt.h> |
41 | #include <arch/trap/exception.h> |
41 | #include <arch/trap/exception.h> |
42 | #include <arch/trap/mmu.h> |
42 | #include <arch/trap/mmu.h> |
43 | #include <arch/stack.h> |
43 | #include <arch/stack.h> |
44 | #include <arch/regdef.h> |
44 | #include <arch/regdef.h> |
45 | 45 | ||
46 | #define TABLE_SIZE TRAP_TABLE_SIZE |
46 | #define TABLE_SIZE TRAP_TABLE_SIZE |
47 | #define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
47 | #define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
48 | 48 | ||
49 | /* |
49 | /* |
50 | * Kernel trap table. |
50 | * Kernel trap table. |
51 | */ |
51 | */ |
52 | .align TABLE_SIZE |
52 | .align TABLE_SIZE |
53 | .global trap_table |
53 | .global trap_table |
54 | trap_table: |
54 | trap_table: |
55 | 55 | ||
56 | /* TT = 0x08, TL = 0, instruction_access_exception */ |
56 | /* TT = 0x08, TL = 0, instruction_access_exception */ |
57 | .org trap_table + TT_INSTRUCTION_ACCESS_EXCEPTION*ENTRY_SIZE |
57 | .org trap_table + TT_INSTRUCTION_ACCESS_EXCEPTION*ENTRY_SIZE |
58 | .global instruction_access_exception |
58 | .global instruction_access_exception |
59 | instruction_access_exception: |
59 | instruction_access_exception: |
60 | SIMPLE_HANDLER do_instruction_access_exc |
60 | SIMPLE_HANDLER do_instruction_access_exc |
61 | 61 | ||
62 | /* TT = 0x10, TL = 0, illegal_instruction */ |
62 | /* TT = 0x10, TL = 0, illegal_instruction */ |
63 | .org trap_table + TT_ILLEGAL_INSTRUCTION*ENTRY_SIZE |
63 | .org trap_table + TT_ILLEGAL_INSTRUCTION*ENTRY_SIZE |
64 | .global illegal_instruction |
64 | .global illegal_instruction |
65 | illegal_instruction: |
65 | illegal_instruction: |
66 | SIMPLE_HANDLER do_illegal_instruction |
66 | SIMPLE_HANDLER do_illegal_instruction |
67 | 67 | ||
68 | /* TT = 0x24, TL = 0, clean_window handler */ |
68 | /* TT = 0x24, TL = 0, clean_window handler */ |
69 | .org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
69 | .org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
70 | .global clean_window_handler |
70 | .global clean_window_handler |
71 | clean_window_handler: |
71 | clean_window_handler: |
72 | CLEAN_WINDOW_HANDLER |
72 | CLEAN_WINDOW_HANDLER |
73 | 73 | ||
74 | /* TT = 0x32, TL = 0, data_access_error */ |
74 | /* TT = 0x32, TL = 0, data_access_error */ |
75 | .org trap_table + TT_DATA_ACCESS_ERROR*ENTRY_SIZE |
75 | .org trap_table + TT_DATA_ACCESS_ERROR*ENTRY_SIZE |
76 | .global data_access_error |
76 | .global data_access_error |
77 | data_access_error: |
77 | data_access_error: |
78 | SIMPLE_HANDLER do_data_access_error |
78 | SIMPLE_HANDLER do_data_access_error |
79 | 79 | ||
80 | /* TT = 0x34, TL = 0, mem_address_not_aligned */ |
80 | /* TT = 0x34, TL = 0, mem_address_not_aligned */ |
81 | .org trap_table + TT_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
81 | .org trap_table + TT_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
82 | .global mem_address_not_aligned |
82 | .global mem_address_not_aligned |
83 | mem_address_not_aligned: |
83 | mem_address_not_aligned: |
84 | SIMPLE_HANDLER do_mem_address_not_aligned |
84 | SIMPLE_HANDLER do_mem_address_not_aligned |
85 | 85 | ||
86 | /* TT = 0x41, TL = 0, interrupt_level_1 handler */ |
86 | /* TT = 0x41, TL = 0, interrupt_level_1 handler */ |
87 | .org trap_table + TT_INTERRUPT_LEVEL_1*ENTRY_SIZE |
87 | .org trap_table + TT_INTERRUPT_LEVEL_1*ENTRY_SIZE |
88 | .global interrupt_level_1_handler |
88 | .global interrupt_level_1_handler |
89 | interrupt_level_1_handler: |
89 | interrupt_level_1_handler: |
90 | INTERRUPT_LEVEL_N_HANDLER 1 |
90 | INTERRUPT_LEVEL_N_HANDLER 1 |
91 | 91 | ||
92 | /* TT = 0x42, TL = 0, interrupt_level_2 handler */ |
92 | /* TT = 0x42, TL = 0, interrupt_level_2 handler */ |
93 | .org trap_table + TT_INTERRUPT_LEVEL_2*ENTRY_SIZE |
93 | .org trap_table + TT_INTERRUPT_LEVEL_2*ENTRY_SIZE |
94 | .global interrupt_level_2_handler |
94 | .global interrupt_level_2_handler |
95 | interrupt_level_2_handler: |
95 | interrupt_level_2_handler: |
96 | INTERRUPT_LEVEL_N_HANDLER 2 |
96 | INTERRUPT_LEVEL_N_HANDLER 2 |
97 | 97 | ||
98 | /* TT = 0x43, TL = 0, interrupt_level_3 handler */ |
98 | /* TT = 0x43, TL = 0, interrupt_level_3 handler */ |
99 | .org trap_table + TT_INTERRUPT_LEVEL_3*ENTRY_SIZE |
99 | .org trap_table + TT_INTERRUPT_LEVEL_3*ENTRY_SIZE |
100 | .global interrupt_level_3_handler |
100 | .global interrupt_level_3_handler |
101 | interrupt_level_3_handler: |
101 | interrupt_level_3_handler: |
102 | INTERRUPT_LEVEL_N_HANDLER 3 |
102 | INTERRUPT_LEVEL_N_HANDLER 3 |
103 | 103 | ||
104 | /* TT = 0x44, TL = 0, interrupt_level_4 handler */ |
104 | /* TT = 0x44, TL = 0, interrupt_level_4 handler */ |
105 | .org trap_table + TT_INTERRUPT_LEVEL_4*ENTRY_SIZE |
105 | .org trap_table + TT_INTERRUPT_LEVEL_4*ENTRY_SIZE |
106 | .global interrupt_level_4_handler |
106 | .global interrupt_level_4_handler |
107 | interrupt_level_4_handler: |
107 | interrupt_level_4_handler: |
108 | INTERRUPT_LEVEL_N_HANDLER 4 |
108 | INTERRUPT_LEVEL_N_HANDLER 4 |
109 | 109 | ||
110 | /* TT = 0x45, TL = 0, interrupt_level_5 handler */ |
110 | /* TT = 0x45, TL = 0, interrupt_level_5 handler */ |
111 | .org trap_table + TT_INTERRUPT_LEVEL_5*ENTRY_SIZE |
111 | .org trap_table + TT_INTERRUPT_LEVEL_5*ENTRY_SIZE |
112 | .global interrupt_level_5_handler |
112 | .global interrupt_level_5_handler |
113 | interrupt_level_5_handler: |
113 | interrupt_level_5_handler: |
114 | INTERRUPT_LEVEL_N_HANDLER 5 |
114 | INTERRUPT_LEVEL_N_HANDLER 5 |
115 | 115 | ||
116 | /* TT = 0x46, TL = 0, interrupt_level_6 handler */ |
116 | /* TT = 0x46, TL = 0, interrupt_level_6 handler */ |
117 | .org trap_table + TT_INTERRUPT_LEVEL_6*ENTRY_SIZE |
117 | .org trap_table + TT_INTERRUPT_LEVEL_6*ENTRY_SIZE |
118 | .global interrupt_level_6_handler |
118 | .global interrupt_level_6_handler |
119 | interrupt_level_6_handler: |
119 | interrupt_level_6_handler: |
120 | INTERRUPT_LEVEL_N_HANDLER 6 |
120 | INTERRUPT_LEVEL_N_HANDLER 6 |
121 | 121 | ||
122 | /* TT = 0x47, TL = 0, interrupt_level_7 handler */ |
122 | /* TT = 0x47, TL = 0, interrupt_level_7 handler */ |
123 | .org trap_table + TT_INTERRUPT_LEVEL_7*ENTRY_SIZE |
123 | .org trap_table + TT_INTERRUPT_LEVEL_7*ENTRY_SIZE |
124 | .global interrupt_level_7_handler |
124 | .global interrupt_level_7_handler |
125 | interrupt_level_7_handler: |
125 | interrupt_level_7_handler: |
126 | INTERRUPT_LEVEL_N_HANDLER 7 |
126 | INTERRUPT_LEVEL_N_HANDLER 7 |
127 | 127 | ||
128 | /* TT = 0x48, TL = 0, interrupt_level_8 handler */ |
128 | /* TT = 0x48, TL = 0, interrupt_level_8 handler */ |
129 | .org trap_table + TT_INTERRUPT_LEVEL_8*ENTRY_SIZE |
129 | .org trap_table + TT_INTERRUPT_LEVEL_8*ENTRY_SIZE |
130 | .global interrupt_level_8_handler |
130 | .global interrupt_level_8_handler |
131 | interrupt_level_8_handler: |
131 | interrupt_level_8_handler: |
132 | INTERRUPT_LEVEL_N_HANDLER 8 |
132 | INTERRUPT_LEVEL_N_HANDLER 8 |
133 | 133 | ||
134 | /* TT = 0x49, TL = 0, interrupt_level_9 handler */ |
134 | /* TT = 0x49, TL = 0, interrupt_level_9 handler */ |
135 | .org trap_table + TT_INTERRUPT_LEVEL_9*ENTRY_SIZE |
135 | .org trap_table + TT_INTERRUPT_LEVEL_9*ENTRY_SIZE |
136 | .global interrupt_level_9_handler |
136 | .global interrupt_level_9_handler |
137 | interrupt_level_9_handler: |
137 | interrupt_level_9_handler: |
138 | INTERRUPT_LEVEL_N_HANDLER 9 |
138 | INTERRUPT_LEVEL_N_HANDLER 9 |
139 | 139 | ||
140 | /* TT = 0x4a, TL = 0, interrupt_level_10 handler */ |
140 | /* TT = 0x4a, TL = 0, interrupt_level_10 handler */ |
141 | .org trap_table + TT_INTERRUPT_LEVEL_10*ENTRY_SIZE |
141 | .org trap_table + TT_INTERRUPT_LEVEL_10*ENTRY_SIZE |
142 | .global interrupt_level_10_handler |
142 | .global interrupt_level_10_handler |
143 | interrupt_level_10_handler: |
143 | interrupt_level_10_handler: |
144 | INTERRUPT_LEVEL_N_HANDLER 10 |
144 | INTERRUPT_LEVEL_N_HANDLER 10 |
145 | 145 | ||
146 | /* TT = 0x4b, TL = 0, interrupt_level_11 handler */ |
146 | /* TT = 0x4b, TL = 0, interrupt_level_11 handler */ |
147 | .org trap_table + TT_INTERRUPT_LEVEL_11*ENTRY_SIZE |
147 | .org trap_table + TT_INTERRUPT_LEVEL_11*ENTRY_SIZE |
148 | .global interrupt_level_11_handler |
148 | .global interrupt_level_11_handler |
149 | interrupt_level_11_handler: |
149 | interrupt_level_11_handler: |
150 | INTERRUPT_LEVEL_N_HANDLER 11 |
150 | INTERRUPT_LEVEL_N_HANDLER 11 |
151 | 151 | ||
152 | /* TT = 0x4c, TL = 0, interrupt_level_12 handler */ |
152 | /* TT = 0x4c, TL = 0, interrupt_level_12 handler */ |
153 | .org trap_table + TT_INTERRUPT_LEVEL_12*ENTRY_SIZE |
153 | .org trap_table + TT_INTERRUPT_LEVEL_12*ENTRY_SIZE |
154 | .global interrupt_level_12_handler |
154 | .global interrupt_level_12_handler |
155 | interrupt_level_12_handler: |
155 | interrupt_level_12_handler: |
156 | INTERRUPT_LEVEL_N_HANDLER 12 |
156 | INTERRUPT_LEVEL_N_HANDLER 12 |
157 | 157 | ||
158 | /* TT = 0x4d, TL = 0, interrupt_level_13 handler */ |
158 | /* TT = 0x4d, TL = 0, interrupt_level_13 handler */ |
159 | .org trap_table + TT_INTERRUPT_LEVEL_13*ENTRY_SIZE |
159 | .org trap_table + TT_INTERRUPT_LEVEL_13*ENTRY_SIZE |
160 | .global interrupt_level_13_handler |
160 | .global interrupt_level_13_handler |
161 | interrupt_level_13_handler: |
161 | interrupt_level_13_handler: |
162 | INTERRUPT_LEVEL_N_HANDLER 13 |
162 | INTERRUPT_LEVEL_N_HANDLER 13 |
163 | 163 | ||
164 | /* TT = 0x4e, TL = 0, interrupt_level_14 handler */ |
164 | /* TT = 0x4e, TL = 0, interrupt_level_14 handler */ |
165 | .org trap_table + TT_INTERRUPT_LEVEL_14*ENTRY_SIZE |
165 | .org trap_table + TT_INTERRUPT_LEVEL_14*ENTRY_SIZE |
166 | .global interrupt_level_14_handler |
166 | .global interrupt_level_14_handler |
167 | interrupt_level_14_handler: |
167 | interrupt_level_14_handler: |
168 | INTERRUPT_LEVEL_N_HANDLER 14 |
168 | INTERRUPT_LEVEL_N_HANDLER 14 |
169 | 169 | ||
170 | /* TT = 0x4f, TL = 0, interrupt_level_15 handler */ |
170 | /* TT = 0x4f, TL = 0, interrupt_level_15 handler */ |
171 | .org trap_table + TT_INTERRUPT_LEVEL_15*ENTRY_SIZE |
171 | .org trap_table + TT_INTERRUPT_LEVEL_15*ENTRY_SIZE |
172 | .global interrupt_level_15_handler |
172 | .global interrupt_level_15_handler |
173 | interrupt_level_15_handler: |
173 | interrupt_level_15_handler: |
174 | INTERRUPT_LEVEL_N_HANDLER 15 |
174 | INTERRUPT_LEVEL_N_HANDLER 15 |
175 | 175 | ||
176 | /* TT = 0x60, TL = 0, interrupt_vector_trap handler */ |
176 | /* TT = 0x60, TL = 0, interrupt_vector_trap handler */ |
177 | .org trap_table + TT_INTERRUPT_VECTOR_TRAP*ENTRY_SIZE |
177 | .org trap_table + TT_INTERRUPT_VECTOR_TRAP*ENTRY_SIZE |
178 | .global interrupt_vector_trap_handler |
178 | .global interrupt_vector_trap_handler |
179 | interrupt_vector_trap_handler: |
179 | interrupt_vector_trap_handler: |
180 | INTERRUPT_VECTOR_TRAP_HANDLER |
180 | INTERRUPT_VECTOR_TRAP_HANDLER |
181 | 181 | ||
182 | /* TT = 0x64, TL = 0, fast_instruction_access_MMU_miss */ |
182 | /* TT = 0x64, TL = 0, fast_instruction_access_MMU_miss */ |
183 | .org trap_table + TT_FAST_INSTRUCTION_ACCESS_MMU_MISS*ENTRY_SIZE |
183 | .org trap_table + TT_FAST_INSTRUCTION_ACCESS_MMU_MISS*ENTRY_SIZE |
184 | .global fast_instruction_access_mmu_miss_handler |
184 | .global fast_instruction_access_mmu_miss_handler |
185 | fast_instruction_access_mmu_miss_handler: |
185 | fast_instruction_access_mmu_miss_handler: |
186 | FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
186 | FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
187 | 187 | ||
188 | /* TT = 0x68, TL = 0, fast_data_access_MMU_miss */ |
188 | /* TT = 0x68, TL = 0, fast_data_access_MMU_miss */ |
189 | .org trap_table + TT_FAST_DATA_ACCESS_MMU_MISS*ENTRY_SIZE |
189 | .org trap_table + TT_FAST_DATA_ACCESS_MMU_MISS*ENTRY_SIZE |
190 | .global fast_data_access_mmu_miss_handler |
190 | .global fast_data_access_mmu_miss_handler |
191 | fast_data_access_mmu_miss_handler: |
191 | fast_data_access_mmu_miss_handler: |
192 | FAST_DATA_ACCESS_MMU_MISS_HANDLER |
192 | FAST_DATA_ACCESS_MMU_MISS_HANDLER |
193 | 193 | ||
194 | /* TT = 0x6c, TL = 0, fast_data_access_protection */ |
194 | /* TT = 0x6c, TL = 0, fast_data_access_protection */ |
195 | .org trap_table + TT_FAST_DATA_ACCESS_PROTECTION*ENTRY_SIZE |
195 | .org trap_table + TT_FAST_DATA_ACCESS_PROTECTION*ENTRY_SIZE |
196 | .global fast_data_access_protection_handler |
196 | .global fast_data_access_protection_handler |
197 | fast_data_access_protection_handler: |
197 | fast_data_access_protection_handler: |
198 | FAST_DATA_ACCESS_PROTECTION_HANDLER |
198 | FAST_DATA_ACCESS_PROTECTION_HANDLER |
199 | 199 | ||
200 | /* TT = 0x80, TL = 0, spill_0_normal handler */ |
200 | /* TT = 0x80, TL = 0, spill_0_normal handler */ |
201 | .org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
201 | .org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
202 | .global spill_0_normal |
202 | .global spill_0_normal |
203 | spill_0_normal: |
203 | spill_0_normal: |
204 | SPILL_NORMAL_HANDLER_KERNEL |
204 | SPILL_NORMAL_HANDLER_KERNEL |
205 | 205 | ||
206 | /* TT = 0xc0, TL = 0, fill_0_normal handler */ |
206 | /* TT = 0xc0, TL = 0, fill_0_normal handler */ |
207 | .org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
207 | .org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
208 | .global fill_0_normal |
208 | .global fill_0_normal |
209 | fill_0_normal: |
209 | fill_0_normal: |
210 | FILL_NORMAL_HANDLER_KERNEL |
210 | FILL_NORMAL_HANDLER_KERNEL |
211 | 211 | ||
212 | /* |
212 | /* |
213 | * Handlers for TL>0. |
213 | * Handlers for TL>0. |
214 | */ |
214 | */ |
215 | 215 | ||
216 | /* TT = 0x08, TL > 0, instruction_access_exception */ |
216 | /* TT = 0x08, TL > 0, instruction_access_exception */ |
217 | .org trap_table + (TT_INSTRUCTION_ACCESS_EXCEPTION+512)*ENTRY_SIZE |
217 | .org trap_table + (TT_INSTRUCTION_ACCESS_EXCEPTION+512)*ENTRY_SIZE |
218 | .global instruction_access_exception_high |
218 | .global instruction_access_exception_high |
219 | instruction_access_exception_high: |
219 | instruction_access_exception_high: |
220 | SIMPLE_HANDLER do_instruction_access_exc |
220 | SIMPLE_HANDLER do_instruction_access_exc |
221 | 221 | ||
222 | /* TT = 0x10, TL > 0, illegal_instruction */ |
222 | /* TT = 0x10, TL > 0, illegal_instruction */ |
223 | .org trap_table + (TT_ILLEGAL_INSTRUCTION+512)*ENTRY_SIZE |
223 | .org trap_table + (TT_ILLEGAL_INSTRUCTION+512)*ENTRY_SIZE |
224 | .global illegal_instruction_high |
224 | .global illegal_instruction_high |
225 | illegal_instruction_high: |
225 | illegal_instruction_high: |
226 | SIMPLE_HANDLER do_illegal_instruction |
226 | SIMPLE_HANDLER do_illegal_instruction |
227 | 227 | ||
228 | /* TT = 0x24, TL > 0, clean_window handler */ |
228 | /* TT = 0x24, TL > 0, clean_window handler */ |
229 | .org trap_table + (TT_CLEAN_WINDOW+512)*ENTRY_SIZE |
229 | .org trap_table + (TT_CLEAN_WINDOW+512)*ENTRY_SIZE |
230 | .global clean_window_handler_high |
230 | .global clean_window_handler_high |
231 | clean_window_handler_high: |
231 | clean_window_handler_high: |
232 | CLEAN_WINDOW_HANDLER |
232 | CLEAN_WINDOW_HANDLER |
233 | 233 | ||
234 | /* TT = 0x32, TL > 0, data_access_error */ |
234 | /* TT = 0x32, TL > 0, data_access_error */ |
235 | .org trap_table + (TT_DATA_ACCESS_ERROR+512)*ENTRY_SIZE |
235 | .org trap_table + (TT_DATA_ACCESS_ERROR+512)*ENTRY_SIZE |
236 | .global data_access_error_high |
236 | .global data_access_error_high |
237 | data_access_error_high: |
237 | data_access_error_high: |
238 | SIMPLE_HANDLER do_data_access_error |
238 | SIMPLE_HANDLER do_data_access_error |
239 | 239 | ||
240 | /* TT = 0x34, TL > 0, mem_address_not_aligned */ |
240 | /* TT = 0x34, TL > 0, mem_address_not_aligned */ |
241 | .org trap_table + (TT_MEM_ADDRESS_NOT_ALIGNED+512)*ENTRY_SIZE |
241 | .org trap_table + (TT_MEM_ADDRESS_NOT_ALIGNED+512)*ENTRY_SIZE |
242 | .global mem_address_not_aligned_high |
242 | .global mem_address_not_aligned_high |
243 | mem_address_not_aligned_high: |
243 | mem_address_not_aligned_high: |
244 | SIMPLE_HANDLER do_mem_address_not_aligned |
244 | SIMPLE_HANDLER do_mem_address_not_aligned |
245 | 245 | ||
246 | /* TT = 0x64, TL > 0, fast_instruction_access_MMU_miss */ |
246 | /* TT = 0x64, TL > 0, fast_instruction_access_MMU_miss */ |
247 | .org trap_table + (TT_FAST_INSTRUCTION_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
247 | .org trap_table + (TT_FAST_INSTRUCTION_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
248 | .global fast_instruction_access_mmu_miss_handler_high |
248 | .global fast_instruction_access_mmu_miss_handler_high |
249 | fast_instruction_access_mmu_miss_handler_high: |
249 | fast_instruction_access_mmu_miss_handler_high: |
250 | FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
250 | FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
251 | 251 | ||
252 | /* TT = 0x68, TL > 0, fast_data_access_MMU_miss */ |
252 | /* TT = 0x68, TL > 0, fast_data_access_MMU_miss */ |
253 | .org trap_table + (TT_FAST_DATA_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
253 | .org trap_table + (TT_FAST_DATA_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
254 | .global fast_data_access_mmu_miss_handler_high |
254 | .global fast_data_access_mmu_miss_handler_high |
255 | fast_data_access_mmu_miss_handler_high: |
255 | fast_data_access_mmu_miss_handler_high: |
256 | FAST_DATA_ACCESS_MMU_MISS_HANDLER |
256 | FAST_DATA_ACCESS_MMU_MISS_HANDLER |
257 | 257 | ||
258 | /* TT = 0x6c, TL > 0, fast_data_access_protection */ |
258 | /* TT = 0x6c, TL > 0, fast_data_access_protection */ |
259 | .org trap_table + (TT_FAST_DATA_ACCESS_PROTECTION+512)*ENTRY_SIZE |
259 | .org trap_table + (TT_FAST_DATA_ACCESS_PROTECTION+512)*ENTRY_SIZE |
260 | .global fast_data_access_protection_handler_high |
260 | .global fast_data_access_protection_handler_high |
261 | fast_data_access_protection_handler_high: |
261 | fast_data_access_protection_handler_high: |
262 | FAST_DATA_ACCESS_PROTECTION_HANDLER |
262 | FAST_DATA_ACCESS_PROTECTION_HANDLER |
263 | 263 | ||
264 | /* TT = 0x80, TL > 0, spill_0_normal handler */ |
264 | /* TT = 0x80, TL > 0, spill_0_normal handler */ |
265 | .org trap_table + (TT_SPILL_0_NORMAL+512)*ENTRY_SIZE |
265 | .org trap_table + (TT_SPILL_0_NORMAL+512)*ENTRY_SIZE |
266 | .global spill_0_normal_high |
266 | .global spill_0_normal_high |
267 | spill_0_normal_high: |
267 | spill_0_normal_high: |
268 | SPILL_NORMAL_HANDLER_KERNEL |
268 | SPILL_NORMAL_HANDLER_KERNEL |
269 | 269 | ||
270 | /* TT = 0xc0, TL > 0, fill_0_normal handler */ |
270 | /* TT = 0xc0, TL > 0, fill_0_normal handler */ |
271 | .org trap_table + (TT_FILL_0_NORMAL+512)*ENTRY_SIZE |
271 | .org trap_table + (TT_FILL_0_NORMAL+512)*ENTRY_SIZE |
272 | .global fill_0_normal_high |
272 | .global fill_0_normal_high |
273 | fill_0_normal_high: |
273 | fill_0_normal_high: |
274 | FILL_NORMAL_HANDLER_KERNEL |
274 | FILL_NORMAL_HANDLER_KERNEL |
275 | 275 | ||
276 | 276 | ||
277 | /* Preemptible trap handler for TL=1. |
277 | /* Preemptible trap handler for TL=1. |
278 | * |
278 | * |
279 | * This trap handler makes arrangements to make calling of scheduler() from |
279 | * This trap handler makes arrangements to make calling of scheduler() from |
280 | * within a trap context possible. It is called from several other trap |
280 | * within a trap context possible. It is called from several other trap |
281 | * handlers. |
281 | * handlers. |
282 | * |
282 | * |
283 | * This function can be entered either with interrupt globals or alternate globals. |
283 | * This function can be entered either with interrupt globals or alternate globals. |
284 | * Memory management trap handlers are obliged to switch to one of those global sets |
284 | * Memory management trap handlers are obliged to switch to one of those global sets |
285 | * prior to calling this function. Register window management functions are not |
285 | * prior to calling this function. Register window management functions are not |
286 | * allowed to modify the alternate global registers. |
286 | * allowed to modify the alternate global registers. |
287 | * |
287 | * |
288 | * Input registers: |
288 | * Input registers: |
289 | * %g1 Address of function to call. |
289 | * %g1 Address of function to call. |
290 | * %g2 Argument for the function. |
290 | * %g2 Argument for the function. |
291 | * %g6 Pre-set as kernel stack base if trap from userspace. |
291 | * %g6 Pre-set as kernel stack base if trap from userspace. |
292 | * %g7 Reserved. |
292 | * %g7 Reserved. |
293 | */ |
293 | */ |
294 | .global preemptible_handler |
294 | .global preemptible_handler |
295 | preemptible_handler: |
295 | preemptible_handler: |
296 | rdpr %tstate, %g3 |
296 | rdpr %tstate, %g3 |
297 | andcc %g3, TSTATE_PRIV_BIT, %g0 ! if this trap came from the privileged mode... |
297 | andcc %g3, TSTATE_PRIV_BIT, %g0 ! if this trap came from the privileged mode... |
298 | bnz 0f ! ...skip setting of kernel stack and primary context |
298 | bnz 0f ! ...skip setting of kernel stack and primary context |
299 | nop |
299 | nop |
300 | 300 | ||
301 | /* |
301 | /* |
302 | * Switch to kernel stack. The old stack is |
302 | * Switch to kernel stack. The old stack is |
303 | * automatically saved in the old window's %sp |
303 | * automatically saved in the old window's %sp |
304 | * and the new window's %fp. |
304 | * and the new window's %fp. |
305 | */ |
305 | */ |
306 | save %g6, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
306 | save %g6, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
307 | 307 | ||
308 | /* |
308 | /* |
309 | * Mark the CANSAVE windows as OTHER windows. |
309 | * Mark the CANSAVE windows as OTHER windows. |
310 | * Set CLEANWIN to NWINDOW-1 so that clean_window traps do not occur. |
310 | * Set CLEANWIN to NWINDOW-1 so that clean_window traps do not occur. |
311 | */ |
311 | */ |
312 | rdpr %cansave, %l0 |
312 | rdpr %cansave, %l0 |
313 | wrpr %l0, %otherwin |
313 | wrpr %l0, %otherwin |
314 | wrpr %g0, %cansave |
314 | wrpr %g0, %cansave |
315 | wrpr %g0, NWINDOW-1, %cleanwin |
315 | wrpr %g0, NWINDOW-1, %cleanwin |
316 | 316 | ||
317 | /* |
317 | /* |
318 | * Switch to primary context 0. |
318 | * Switch to primary context 0. |
319 | */ |
319 | */ |
320 | mov VA_PRIMARY_CONTEXT_REG, %l0 |
320 | mov VA_PRIMARY_CONTEXT_REG, %l0 |
321 | stxa %g0, [%l0] ASI_DMMU |
321 | stxa %g0, [%l0] ASI_DMMU |
322 | set kernel_image_start, %l0 |
322 | set kernel_image_start, %l0 |
323 | flush %l0 |
323 | flush %l0 |
324 | 324 | ||
325 | ba 1f |
325 | ba 1f |
326 | nop |
326 | nop |
327 | 327 | ||
328 | 0: |
328 | 0: |
329 | save %sp, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
329 | save %sp, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
330 | 330 | ||
331 | /* |
331 | /* |
332 | * At this moment, we are using the kernel stack |
332 | * At this moment, we are using the kernel stack |
333 | * and have successfully allocated a register window. |
333 | * and have successfully allocated a register window. |
334 | */ |
334 | */ |
335 | 1: |
335 | 1: |
336 | 336 | ||
337 | /* |
337 | /* |
338 | * Copy arguments. |
338 | * Copy arguments. |
339 | */ |
339 | */ |
340 | mov %g1, %l0 |
340 | mov %g1, %l0 |
341 | mov %g2, %o0 |
341 | mov %g2, %o0 |
342 | 342 | ||
343 | /* |
343 | /* |
344 | * Save TSTATE, TPC and TNPC aside. |
344 | * Save TSTATE, TPC and TNPC aside. |
345 | */ |
345 | */ |
346 | rdpr %tstate, %g1 |
346 | rdpr %tstate, %g1 |
347 | rdpr %tpc, %g2 |
347 | rdpr %tpc, %g2 |
348 | rdpr %tnpc, %g3 |
348 | rdpr %tnpc, %g3 |
349 | 349 | ||
350 | /* |
350 | /* |
351 | * The following memory accesses will not fault |
351 | * The following memory accesses will not fault |
352 | * because special provisions are made to have |
352 | * because special provisions are made to have |
353 | * the kernel stack of THREAD locked in DTLB. |
353 | * the kernel stack of THREAD locked in DTLB. |
354 | */ |
354 | */ |
355 | stx %g1, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TSTATE] |
355 | stx %g1, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TSTATE] |
356 | stx %g2, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TPC] |
356 | stx %g2, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TPC] |
357 | stx %g3, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC] |
357 | stx %g3, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC] |
358 | 358 | ||
359 | wrpr %g0, 0, %tl |
359 | wrpr %g0, 0, %tl |
360 | wrpr %g0, PSTATE_PRIV_BIT, %pstate |
360 | wrpr %g0, PSTATE_PRIV_BIT, %pstate |
361 | SAVE_GLOBALS |
361 | SAVE_GLOBALS |
362 | 362 | ||
363 | /* |
363 | /* |
364 | * Call the higher-level handler and pass istate as second parameter. |
364 | * Call the higher-level handler and pass istate as second parameter. |
365 | */ |
365 | */ |
366 | call %l0 |
366 | call %l0 |
367 | add %sp, PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC, %o1 |
367 | add %sp, PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC, %o1 |
368 | 368 | ||
369 | RESTORE_GLOBALS |
369 | RESTORE_GLOBALS |
370 | wrpr %g0, PSTATE_AG_BIT | PSTATE_PRIV_BIT, %pstate |
370 | wrpr %g0, PSTATE_AG_BIT | PSTATE_PRIV_BIT, %pstate |
371 | wrpr %g0, 1, %tl |
371 | wrpr %g0, 1, %tl |
372 | 372 | ||
373 | /* |
373 | /* |
374 | * Read TSTATE, TPC and TNPC from saved copy. |
374 | * Read TSTATE, TPC and TNPC from saved copy. |
375 | */ |
375 | */ |
376 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TSTATE], %g1 |
376 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TSTATE], %g1 |
377 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TPC], %g2 |
377 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TPC], %g2 |
378 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC], %g3 |
378 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC], %g3 |
379 | 379 | ||
380 | /* |
380 | /* |
381 | * Restore TSTATE, TPC and TNPC from saved copies. |
381 | * Restore TSTATE, TPC and TNPC from saved copies. |
382 | */ |
382 | */ |
383 | wrpr %g1, 0, %tstate |
383 | wrpr %g1, 0, %tstate |
384 | wrpr %g2, 0, %tpc |
384 | wrpr %g2, 0, %tpc |
385 | wrpr %g3, 0, %tnpc |
385 | wrpr %g3, 0, %tnpc |
386 | 386 | ||
387 | /* |
387 | /* |
388 | * If OTHERWIN is zero, then all the userspace windows have been |
388 | * If OTHERWIN is zero, then all the userspace windows have been |
389 | * spilled to kernel memory (i.e. register window buffer). If |
389 | * spilled to kernel memory (i.e. register window buffer). If |
390 | * OTHERWIN is non-zero, then some userspace windows are still |
390 | * OTHERWIN is non-zero, then some userspace windows are still |
391 | * valid. Others might have been spilled. However, the CWP pointer |
391 | * valid. Others might have been spilled. However, the CWP pointer |
392 | * needs no fixing because the scheduler had not been called. |
392 | * needs no fixing because the scheduler had not been called. |
393 | */ |
393 | */ |
394 | rdpr %otherwin, %l0 |
394 | rdpr %otherwin, %l0 |
395 | brnz %l0, 0f |
395 | brnz %l0, 0f |
396 | nop |
396 | nop |
397 | 397 | ||
398 | /* |
398 | /* |
399 | * OTHERWIN == 0 |
399 | * OTHERWIN == 0 |
400 | */ |
400 | */ |
401 | 401 | ||
402 | /* |
402 | /* |
403 | * If TSTATE.CWP + 1 == CWP, then we still do not have to fix CWP. |
403 | * If TSTATE.CWP + 1 == CWP, then we still do not have to fix CWP. |
404 | */ |
404 | */ |
405 | and %g1, TSTATE_CWP_MASK, %l0 |
405 | and %g1, TSTATE_CWP_MASK, %l0 |
406 | inc %l0 |
406 | inc %l0 |
407 | and %l0, TSTATE_CWP_MASK, %l0 ! %l0 mod NWINDOW |
407 | and %l0, TSTATE_CWP_MASK, %l0 ! %l0 mod NWINDOW |
408 | rdpr %cwp, %l1 |
408 | rdpr %cwp, %l1 |
409 | cmp %l0, %l1 |
409 | cmp %l0, %l1 |
410 | bz 0f ! CWP is ok |
410 | bz 0f ! CWP is ok |
411 | nop |
411 | nop |
412 | 412 | ||
413 | /* |
413 | /* |
414 | * Fix CWP. |
414 | * Fix CWP. |
- | 415 | * Just for reminder, the input registers in the current window |
|
- | 416 | * are the output registers of the window to which we want to |
|
- | 417 | * restore. Because the fill trap fills only input and local |
|
- | 418 | * registers of a window, we need to preserve those output |
|
- | 419 | * registers manually. |
|
415 | */ |
420 | */ |
416 | mov %fp, %g1 |
- | |
417 | flushw |
421 | flushw |
- | 422 | mov %sp, %g1 |
|
- | 423 | stx %i0, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I0] |
|
- | 424 | stx %i1, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I1] |
|
- | 425 | stx %i2, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I2] |
|
- | 426 | stx %i3, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I3] |
|
- | 427 | stx %i4, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I4] |
|
- | 428 | stx %i5, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I5] |
|
- | 429 | stx %i6, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I6] |
|
- | 430 | stx %i7, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I7] |
|
418 | wrpr %l0, 0, %cwp |
431 | wrpr %l0, 0, %cwp |
419 | mov %g1, %fp |
432 | mov %g1, %sp |
- | 433 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I0], %i0 |
|
- | 434 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I1], %i1 |
|
- | 435 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I2], %i2 |
|
- | 436 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I3], %i3 |
|
- | 437 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I4], %i4 |
|
- | 438 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I5], %i5 |
|
- | 439 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I6], %i6 |
|
- | 440 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I7], %i7 |
|
420 | 441 | ||
421 | /* |
442 | /* |
422 | * OTHERWIN != 0 or fall-through from the OTHERWIN == 0 case. |
443 | * OTHERWIN != 0 or fall-through from the OTHERWIN == 0 case. |
423 | */ |
444 | */ |
424 | 0: |
445 | 0: |
425 | ! TODO: restore register windows from register window memory buffer |
446 | ! TODO: restore register windows from register window memory buffer |
426 | 447 | ||
427 | restore |
448 | restore |
428 | retry |
449 | retry |
429 | 450 | ||
430 | 451 | ||
431 |
|
452 |
|
432 | 453 | ||
433 | 454 | ||
434 | 455 |