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1 | # |
1 | # |
2 | # Copyright (c) 2005 Jakub Jermar |
2 | # Copyright (c) 2005 Jakub Jermar |
3 | # Copyright (c) 2008 Pavel Rimsky |
3 | # Copyright (c) 2008 Pavel Rimsky |
4 | # All rights reserved. |
4 | # All rights reserved. |
5 | # |
5 | # |
6 | # Redistribution and use in source and binary forms, with or without |
6 | # Redistribution and use in source and binary forms, with or without |
7 | # modification, are permitted provided that the following conditions |
7 | # modification, are permitted provided that the following conditions |
8 | # are met: |
8 | # are met: |
9 | # |
9 | # |
10 | # - Redistributions of source code must retain the above copyright |
10 | # - Redistributions of source code must retain the above copyright |
11 | # notice, this list of conditions and the following disclaimer. |
11 | # notice, this list of conditions and the following disclaimer. |
12 | # - Redistributions in binary form must reproduce the above copyright |
12 | # - Redistributions in binary form must reproduce the above copyright |
13 | # notice, this list of conditions and the following disclaimer in the |
13 | # notice, this list of conditions and the following disclaimer in the |
14 | # documentation and/or other materials provided with the distribution. |
14 | # documentation and/or other materials provided with the distribution. |
15 | # - The name of the author may not be used to endorse or promote products |
15 | # - The name of the author may not be used to endorse or promote products |
16 | # derived from this software without specific prior written permission. |
16 | # derived from this software without specific prior written permission. |
17 | # |
17 | # |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | # |
28 | # |
29 | 29 | ||
30 | /** |
30 | /** |
31 | * @file |
31 | * @file |
32 | * @brief This file contains kernel trap table. |
32 | * @brief This file contains kernel trap table. |
33 | */ |
33 | */ |
34 | 34 | ||
35 | .register %g2, #scratch |
35 | .register %g2, #scratch |
36 | .register %g3, #scratch |
36 | .register %g3, #scratch |
37 | 37 | ||
38 | .text |
38 | .text |
39 | 39 | ||
40 | #include <arch/trap/trap_table.h> |
40 | #include <arch/trap/trap_table.h> |
41 | #include <arch/trap/regwin.h> |
41 | #include <arch/trap/regwin.h> |
42 | #include <arch/trap/interrupt.h> |
42 | #include <arch/trap/interrupt.h> |
43 | #include <arch/trap/exception.h> |
43 | #include <arch/trap/exception.h> |
44 | #include <arch/trap/syscall.h> |
44 | #include <arch/trap/syscall.h> |
45 | #include <arch/trap/sun4v/mmu.h> |
45 | #include <arch/trap/sun4v/mmu.h> |
46 | #include <arch/mm/sun4v/mmu.h> |
46 | #include <arch/mm/sun4v/mmu.h> |
47 | #include <arch/mm/page.h> |
47 | #include <arch/mm/page.h> |
48 | #include <arch/stack.h> |
48 | #include <arch/stack.h> |
49 | #include <arch/sun4v/regdef.h> |
49 | #include <arch/sun4v/regdef.h> |
50 | #include <arch/sun4v/arch.h> |
50 | #include <arch/sun4v/arch.h> |
51 | #include <arch/sun4v/cpu.h> |
51 | #include <arch/sun4v/cpu.h> |
52 | 52 | ||
53 | #define TABLE_SIZE TRAP_TABLE_SIZE |
53 | #define TABLE_SIZE TRAP_TABLE_SIZE |
54 | #define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
54 | #define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
55 | 55 | ||
56 | /* |
56 | /* |
57 | * Kernel trap table. |
57 | * Kernel trap table. |
58 | */ |
58 | */ |
59 | .align TABLE_SIZE |
59 | .align TABLE_SIZE |
60 | .global trap_table |
60 | .global trap_table |
61 | trap_table: |
61 | trap_table: |
62 | 62 | ||
63 | /* TT = 0x08, TL = 0, instruction_access_exception */ |
63 | /* TT = 0x08, TL = 0, instruction_access_exception */ |
64 | /* TT = 0x08, TL = 0, IAE_privilege_violation on UltraSPARC T2 */ |
64 | /* TT = 0x08, TL = 0, IAE_privilege_violation on UltraSPARC T2 */ |
65 | .org trap_table + TT_INSTRUCTION_ACCESS_EXCEPTION*ENTRY_SIZE |
65 | .org trap_table + TT_INSTRUCTION_ACCESS_EXCEPTION*ENTRY_SIZE |
66 | .global instruction_access_exception_tl0 |
66 | .global instruction_access_exception_tl0 |
67 | instruction_access_exception_tl0: |
67 | instruction_access_exception_tl0: |
68 | PREEMPTIBLE_HANDLER instruction_access_exception |
68 | PREEMPTIBLE_HANDLER instruction_access_exception |
69 | 69 | ||
- | 70 | /* TT = 0x09, TL = 0, instruction_access_mmu_miss */ |
|
- | 71 | .org trap_table + TT_INSTRUCTION_ACCESS_MMU_MISS*ENTRY_SIZE |
|
- | 72 | .global instruction_access_mmu_miss_handler_tl0 |
|
- | 73 | ba fast_instruction_access_mmu_miss_handler_tl0 |
|
- | 74 | nop |
|
- | 75 | ||
70 | /* TT = 0x0a, TL = 0, instruction_access_error */ |
76 | /* TT = 0x0a, TL = 0, instruction_access_error */ |
71 | .org trap_table + TT_INSTRUCTION_ACCESS_ERROR*ENTRY_SIZE |
77 | .org trap_table + TT_INSTRUCTION_ACCESS_ERROR*ENTRY_SIZE |
72 | .global instruction_access_error_tl0 |
78 | .global instruction_access_error_tl0 |
73 | instruction_access_error_tl0: |
79 | instruction_access_error_tl0: |
74 | PREEMPTIBLE_HANDLER instruction_access_error |
80 | PREEMPTIBLE_HANDLER instruction_access_error |
75 | 81 | ||
76 | /* TT = 0x0b, TL = 0, IAE_unauth_access */ |
82 | /* TT = 0x0b, TL = 0, IAE_unauth_access */ |
77 | .org trap_table + TT_IAE_UNAUTH_ACCESS*ENTRY_SIZE |
83 | .org trap_table + TT_IAE_UNAUTH_ACCESS*ENTRY_SIZE |
78 | .global iae_unauth_access_tl0 |
84 | .global iae_unauth_access_tl0 |
79 | iae_unauth_access_tl0: |
85 | iae_unauth_access_tl0: |
80 | PREEMPTIBLE_HANDLER instruction_access_exception |
86 | PREEMPTIBLE_HANDLER instruction_access_exception |
81 | 87 | ||
82 | /* TT = 0x0c, TL = 0, IAE_nfo_page */ |
88 | /* TT = 0x0c, TL = 0, IAE_nfo_page */ |
83 | .org trap_table + TT_IAE_NFO_PAGE*ENTRY_SIZE |
89 | .org trap_table + TT_IAE_NFO_PAGE*ENTRY_SIZE |
84 | .global iae_nfo_page_tl0 |
90 | .global iae_nfo_page_tl0 |
85 | iae_nfo_page_tl0: |
91 | iae_nfo_page_tl0: |
86 | PREEMPTIBLE_HANDLER instruction_access_exception |
92 | PREEMPTIBLE_HANDLER instruction_access_exception |
87 | 93 | ||
88 | /* TT = 0x10, TL = 0, illegal_instruction */ |
94 | /* TT = 0x10, TL = 0, illegal_instruction */ |
89 | .org trap_table + TT_ILLEGAL_INSTRUCTION*ENTRY_SIZE |
95 | .org trap_table + TT_ILLEGAL_INSTRUCTION*ENTRY_SIZE |
90 | .global illegal_instruction_tl0 |
96 | .global illegal_instruction_tl0 |
91 | illegal_instruction_tl0: |
97 | illegal_instruction_tl0: |
92 | PREEMPTIBLE_HANDLER illegal_instruction |
98 | PREEMPTIBLE_HANDLER illegal_instruction |
93 | 99 | ||
94 | /* TT = 0x11, TL = 0, privileged_opcode */ |
100 | /* TT = 0x11, TL = 0, privileged_opcode */ |
95 | .org trap_table + TT_PRIVILEGED_OPCODE*ENTRY_SIZE |
101 | .org trap_table + TT_PRIVILEGED_OPCODE*ENTRY_SIZE |
96 | .global privileged_opcode_tl0 |
102 | .global privileged_opcode_tl0 |
97 | privileged_opcode_tl0: |
103 | privileged_opcode_tl0: |
98 | PREEMPTIBLE_HANDLER privileged_opcode |
104 | PREEMPTIBLE_HANDLER privileged_opcode |
99 | 105 | ||
100 | /* TT = 0x12, TL = 0, unimplemented_LDD */ |
106 | /* TT = 0x12, TL = 0, unimplemented_LDD */ |
101 | .org trap_table + TT_UNIMPLEMENTED_LDD*ENTRY_SIZE |
107 | .org trap_table + TT_UNIMPLEMENTED_LDD*ENTRY_SIZE |
102 | .global unimplemented_LDD_tl0 |
108 | .global unimplemented_LDD_tl0 |
103 | unimplemented_LDD_tl0: |
109 | unimplemented_LDD_tl0: |
104 | PREEMPTIBLE_HANDLER unimplemented_LDD |
110 | PREEMPTIBLE_HANDLER unimplemented_LDD |
105 | 111 | ||
106 | /* TT = 0x13, TL = 0, unimplemented_STD */ |
112 | /* TT = 0x13, TL = 0, unimplemented_STD */ |
107 | .org trap_table + TT_UNIMPLEMENTED_STD*ENTRY_SIZE |
113 | .org trap_table + TT_UNIMPLEMENTED_STD*ENTRY_SIZE |
108 | .global unimplemented_STD_tl0 |
114 | .global unimplemented_STD_tl0 |
109 | unimplemented_STD_tl0: |
115 | unimplemented_STD_tl0: |
110 | PREEMPTIBLE_HANDLER unimplemented_STD |
116 | PREEMPTIBLE_HANDLER unimplemented_STD |
111 | 117 | ||
112 | /* TT = 0x14, TL = 0, DAE_invalid_asi */ |
118 | /* TT = 0x14, TL = 0, DAE_invalid_asi */ |
113 | .org trap_table + TT_DAE_INVALID_ASI*ENTRY_SIZE |
119 | .org trap_table + TT_DAE_INVALID_ASI*ENTRY_SIZE |
114 | .global dae_invalid_asi_tl0 |
120 | .global dae_invalid_asi_tl0 |
115 | dae_invalid_asi_tl0: |
121 | dae_invalid_asi_tl0: |
116 | PREEMPTIBLE_HANDLER data_access_exception |
122 | PREEMPTIBLE_HANDLER data_access_exception |
117 | 123 | ||
118 | /* TT = 0x15, TL = 0, DAE_privilege_violation */ |
124 | /* TT = 0x15, TL = 0, DAE_privilege_violation */ |
119 | .org trap_table + TT_DAE_PRIVILEGE_VIOLATION*ENTRY_SIZE |
125 | .org trap_table + TT_DAE_PRIVILEGE_VIOLATION*ENTRY_SIZE |
120 | .global dae_privilege_violation_tl0 |
126 | .global dae_privilege_violation_tl0 |
121 | dae_privilege_violation_tl0: |
127 | dae_privilege_violation_tl0: |
122 | PREEMPTIBLE_HANDLER data_access_exception |
128 | PREEMPTIBLE_HANDLER data_access_exception |
123 | 129 | ||
124 | /* TT = 0x16, TL = 0, DAE_nc_page */ |
130 | /* TT = 0x16, TL = 0, DAE_nc_page */ |
125 | .org trap_table + TT_DAE_NC_PAGE*ENTRY_SIZE |
131 | .org trap_table + TT_DAE_NC_PAGE*ENTRY_SIZE |
126 | .global dae_nc_page_tl0 |
132 | .global dae_nc_page_tl0 |
127 | dae_nc_page_tl0: |
133 | dae_nc_page_tl0: |
128 | PREEMPTIBLE_HANDLER data_access_exception |
134 | PREEMPTIBLE_HANDLER data_access_exception |
129 | 135 | ||
130 | /* TT = 0x17, TL = 0, DAE_nfo_page */ |
136 | /* TT = 0x17, TL = 0, DAE_nfo_page */ |
131 | .org trap_table + TT_DAE_NFO_PAGE*ENTRY_SIZE |
137 | .org trap_table + TT_DAE_NFO_PAGE*ENTRY_SIZE |
132 | .global dae_nfo_page_tl0 |
138 | .global dae_nfo_page_tl0 |
133 | dae_nfo_page_tl0: |
139 | dae_nfo_page_tl0: |
134 | PREEMPTIBLE_HANDLER data_access_exception |
140 | PREEMPTIBLE_HANDLER data_access_exception |
135 | 141 | ||
136 | /* TT = 0x20, TL = 0, fb_disabled handler */ |
142 | /* TT = 0x20, TL = 0, fb_disabled handler */ |
137 | .org trap_table + TT_FP_DISABLED*ENTRY_SIZE |
143 | .org trap_table + TT_FP_DISABLED*ENTRY_SIZE |
138 | .global fb_disabled_tl0 |
144 | .global fb_disabled_tl0 |
139 | fp_disabled_tl0: |
145 | fp_disabled_tl0: |
140 | PREEMPTIBLE_HANDLER fp_disabled |
146 | PREEMPTIBLE_HANDLER fp_disabled |
141 | 147 | ||
142 | /* TT = 0x21, TL = 0, fb_exception_ieee_754 handler */ |
148 | /* TT = 0x21, TL = 0, fb_exception_ieee_754 handler */ |
143 | .org trap_table + TT_FP_EXCEPTION_IEEE_754*ENTRY_SIZE |
149 | .org trap_table + TT_FP_EXCEPTION_IEEE_754*ENTRY_SIZE |
144 | .global fb_exception_ieee_754_tl0 |
150 | .global fb_exception_ieee_754_tl0 |
145 | fp_exception_ieee_754_tl0: |
151 | fp_exception_ieee_754_tl0: |
146 | PREEMPTIBLE_HANDLER fp_exception_ieee_754 |
152 | PREEMPTIBLE_HANDLER fp_exception_ieee_754 |
147 | 153 | ||
148 | /* TT = 0x22, TL = 0, fb_exception_other handler */ |
154 | /* TT = 0x22, TL = 0, fb_exception_other handler */ |
149 | .org trap_table + TT_FP_EXCEPTION_OTHER*ENTRY_SIZE |
155 | .org trap_table + TT_FP_EXCEPTION_OTHER*ENTRY_SIZE |
150 | .global fb_exception_other_tl0 |
156 | .global fb_exception_other_tl0 |
151 | fp_exception_other_tl0: |
157 | fp_exception_other_tl0: |
152 | PREEMPTIBLE_HANDLER fp_exception_other |
158 | PREEMPTIBLE_HANDLER fp_exception_other |
153 | 159 | ||
154 | /* TT = 0x23, TL = 0, tag_overflow */ |
160 | /* TT = 0x23, TL = 0, tag_overflow */ |
155 | .org trap_table + TT_TAG_OVERFLOW*ENTRY_SIZE |
161 | .org trap_table + TT_TAG_OVERFLOW*ENTRY_SIZE |
156 | .global tag_overflow_tl0 |
162 | .global tag_overflow_tl0 |
157 | tag_overflow_tl0: |
163 | tag_overflow_tl0: |
158 | PREEMPTIBLE_HANDLER tag_overflow |
164 | PREEMPTIBLE_HANDLER tag_overflow |
159 | 165 | ||
160 | /* TT = 0x24, TL = 0, clean_window handler */ |
166 | /* TT = 0x24, TL = 0, clean_window handler */ |
161 | .org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
167 | .org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
162 | .global clean_window_tl0 |
168 | .global clean_window_tl0 |
163 | clean_window_tl0: |
169 | clean_window_tl0: |
164 | CLEAN_WINDOW_HANDLER |
170 | CLEAN_WINDOW_HANDLER |
165 | 171 | ||
166 | /* TT = 0x28, TL = 0, division_by_zero */ |
172 | /* TT = 0x28, TL = 0, division_by_zero */ |
167 | .org trap_table + TT_DIVISION_BY_ZERO*ENTRY_SIZE |
173 | .org trap_table + TT_DIVISION_BY_ZERO*ENTRY_SIZE |
168 | .global division_by_zero_tl0 |
174 | .global division_by_zero_tl0 |
169 | division_by_zero_tl0: |
175 | division_by_zero_tl0: |
170 | PREEMPTIBLE_HANDLER division_by_zero |
176 | PREEMPTIBLE_HANDLER division_by_zero |
171 | 177 | ||
172 | /* TT = 0x30, TL = 0, data_access_exception */ |
178 | /* TT = 0x30, TL = 0, data_access_exception */ |
173 | /* TT = 0x30, TL = 0, DAE_side_effect_page for UltraPSARC T2 */ |
179 | /* TT = 0x30, TL = 0, DAE_side_effect_page for UltraPSARC T2 */ |
174 | .org trap_table + TT_DATA_ACCESS_EXCEPTION*ENTRY_SIZE |
180 | .org trap_table + TT_DATA_ACCESS_EXCEPTION*ENTRY_SIZE |
175 | .global data_access_exception_tl0 |
181 | .global data_access_exception_tl0 |
176 | data_access_exception_tl0: |
182 | data_access_exception_tl0: |
177 | PREEMPTIBLE_HANDLER data_access_exception |
183 | PREEMPTIBLE_HANDLER data_access_exception |
178 | 184 | ||
- | 185 | /* TT = 0x31, TL = 0, data_access_mmu_miss */ |
|
- | 186 | .org trap_table + TT_DATA_ACCESS_MMU_MISS*ENTRY_SIZE |
|
- | 187 | .global data_access_mmu_miss_tl0 |
|
- | 188 | data_access_mmu_miss_tl0: |
|
- | 189 | ba fast_data_access_mmu_miss_handler_tl0 |
|
- | 190 | nop |
|
- | 191 | ||
179 | /* TT = 0x32, TL = 0, data_access_error */ |
192 | /* TT = 0x32, TL = 0, data_access_error */ |
180 | .org trap_table + TT_DATA_ACCESS_ERROR*ENTRY_SIZE |
193 | .org trap_table + TT_DATA_ACCESS_ERROR*ENTRY_SIZE |
181 | .global data_access_error_tl0 |
194 | .global data_access_error_tl0 |
182 | data_access_error_tl0: |
195 | data_access_error_tl0: |
183 | PREEMPTIBLE_HANDLER data_access_error |
196 | PREEMPTIBLE_HANDLER data_access_error |
184 | 197 | ||
185 | /* TT = 0x34, TL = 0, mem_address_not_aligned */ |
198 | /* TT = 0x34, TL = 0, mem_address_not_aligned */ |
186 | .org trap_table + TT_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
199 | .org trap_table + TT_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
187 | .global mem_address_not_aligned_tl0 |
200 | .global mem_address_not_aligned_tl0 |
188 | mem_address_not_aligned_tl0: |
201 | mem_address_not_aligned_tl0: |
189 | PREEMPTIBLE_HANDLER mem_address_not_aligned |
202 | PREEMPTIBLE_HANDLER mem_address_not_aligned |
190 | 203 | ||
191 | /* TT = 0x35, TL = 0, LDDF_mem_address_not_aligned */ |
204 | /* TT = 0x35, TL = 0, LDDF_mem_address_not_aligned */ |
192 | .org trap_table + TT_LDDF_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
205 | .org trap_table + TT_LDDF_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
193 | .global LDDF_mem_address_not_aligned_tl0 |
206 | .global LDDF_mem_address_not_aligned_tl0 |
194 | LDDF_mem_address_not_aligned_tl0: |
207 | LDDF_mem_address_not_aligned_tl0: |
195 | PREEMPTIBLE_HANDLER LDDF_mem_address_not_aligned |
208 | PREEMPTIBLE_HANDLER LDDF_mem_address_not_aligned |
196 | 209 | ||
197 | /* TT = 0x36, TL = 0, STDF_mem_address_not_aligned */ |
210 | /* TT = 0x36, TL = 0, STDF_mem_address_not_aligned */ |
198 | .org trap_table + TT_STDF_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
211 | .org trap_table + TT_STDF_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
199 | .global STDF_mem_address_not_aligned_tl0 |
212 | .global STDF_mem_address_not_aligned_tl0 |
200 | STDF_mem_address_not_aligned_tl0: |
213 | STDF_mem_address_not_aligned_tl0: |
201 | PREEMPTIBLE_HANDLER STDF_mem_address_not_aligned |
214 | PREEMPTIBLE_HANDLER STDF_mem_address_not_aligned |
202 | 215 | ||
203 | /* TT = 0x37, TL = 0, privileged_action */ |
216 | /* TT = 0x37, TL = 0, privileged_action */ |
204 | .org trap_table + TT_PRIVILEGED_ACTION*ENTRY_SIZE |
217 | .org trap_table + TT_PRIVILEGED_ACTION*ENTRY_SIZE |
205 | .global privileged_action_tl0 |
218 | .global privileged_action_tl0 |
206 | privileged_action_tl0: |
219 | privileged_action_tl0: |
207 | PREEMPTIBLE_HANDLER privileged_action |
220 | PREEMPTIBLE_HANDLER privileged_action |
208 | 221 | ||
209 | /* TT = 0x38, TL = 0, LDQF_mem_address_not_aligned */ |
222 | /* TT = 0x38, TL = 0, LDQF_mem_address_not_aligned */ |
210 | .org trap_table + TT_LDQF_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
223 | .org trap_table + TT_LDQF_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
211 | .global LDQF_mem_address_not_aligned_tl0 |
224 | .global LDQF_mem_address_not_aligned_tl0 |
212 | LDQF_mem_address_not_aligned_tl0: |
225 | LDQF_mem_address_not_aligned_tl0: |
213 | PREEMPTIBLE_HANDLER LDQF_mem_address_not_aligned |
226 | PREEMPTIBLE_HANDLER LDQF_mem_address_not_aligned |
214 | 227 | ||
215 | /* TT = 0x39, TL = 0, STQF_mem_address_not_aligned */ |
228 | /* TT = 0x39, TL = 0, STQF_mem_address_not_aligned */ |
216 | .org trap_table + TT_STQF_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
229 | .org trap_table + TT_STQF_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
217 | .global STQF_mem_address_not_aligned_tl0 |
230 | .global STQF_mem_address_not_aligned_tl0 |
218 | STQF_mem_address_not_aligned_tl0: |
231 | STQF_mem_address_not_aligned_tl0: |
219 | PREEMPTIBLE_HANDLER STQF_mem_address_not_aligned |
232 | PREEMPTIBLE_HANDLER STQF_mem_address_not_aligned |
220 | 233 | ||
221 | /* TT = 0x41, TL = 0, interrupt_level_1 handler */ |
234 | /* TT = 0x41, TL = 0, interrupt_level_1 handler */ |
222 | .org trap_table + TT_INTERRUPT_LEVEL_1*ENTRY_SIZE |
235 | .org trap_table + TT_INTERRUPT_LEVEL_1*ENTRY_SIZE |
223 | .global interrupt_level_1_handler_tl0 |
236 | .global interrupt_level_1_handler_tl0 |
224 | interrupt_level_1_handler_tl0: |
237 | interrupt_level_1_handler_tl0: |
225 | INTERRUPT_LEVEL_N_HANDLER 1 |
238 | INTERRUPT_LEVEL_N_HANDLER 1 |
226 | 239 | ||
227 | /* TT = 0x42, TL = 0, interrupt_level_2 handler */ |
240 | /* TT = 0x42, TL = 0, interrupt_level_2 handler */ |
228 | .org trap_table + TT_INTERRUPT_LEVEL_2*ENTRY_SIZE |
241 | .org trap_table + TT_INTERRUPT_LEVEL_2*ENTRY_SIZE |
229 | .global interrupt_level_2_handler_tl0 |
242 | .global interrupt_level_2_handler_tl0 |
230 | interrupt_level_2_handler_tl0: |
243 | interrupt_level_2_handler_tl0: |
231 | INTERRUPT_LEVEL_N_HANDLER 2 |
244 | INTERRUPT_LEVEL_N_HANDLER 2 |
232 | 245 | ||
233 | /* TT = 0x43, TL = 0, interrupt_level_3 handler */ |
246 | /* TT = 0x43, TL = 0, interrupt_level_3 handler */ |
234 | .org trap_table + TT_INTERRUPT_LEVEL_3*ENTRY_SIZE |
247 | .org trap_table + TT_INTERRUPT_LEVEL_3*ENTRY_SIZE |
235 | .global interrupt_level_3_handler_tl0 |
248 | .global interrupt_level_3_handler_tl0 |
236 | interrupt_level_3_handler_tl0: |
249 | interrupt_level_3_handler_tl0: |
237 | INTERRUPT_LEVEL_N_HANDLER 3 |
250 | INTERRUPT_LEVEL_N_HANDLER 3 |
238 | 251 | ||
239 | /* TT = 0x44, TL = 0, interrupt_level_4 handler */ |
252 | /* TT = 0x44, TL = 0, interrupt_level_4 handler */ |
240 | .org trap_table + TT_INTERRUPT_LEVEL_4*ENTRY_SIZE |
253 | .org trap_table + TT_INTERRUPT_LEVEL_4*ENTRY_SIZE |
241 | .global interrupt_level_4_handler_tl0 |
254 | .global interrupt_level_4_handler_tl0 |
242 | interrupt_level_4_handler_tl0: |
255 | interrupt_level_4_handler_tl0: |
243 | INTERRUPT_LEVEL_N_HANDLER 4 |
256 | INTERRUPT_LEVEL_N_HANDLER 4 |
244 | 257 | ||
245 | /* TT = 0x45, TL = 0, interrupt_level_5 handler */ |
258 | /* TT = 0x45, TL = 0, interrupt_level_5 handler */ |
246 | .org trap_table + TT_INTERRUPT_LEVEL_5*ENTRY_SIZE |
259 | .org trap_table + TT_INTERRUPT_LEVEL_5*ENTRY_SIZE |
247 | .global interrupt_level_5_handler_tl0 |
260 | .global interrupt_level_5_handler_tl0 |
248 | interrupt_level_5_handler_tl0: |
261 | interrupt_level_5_handler_tl0: |
249 | INTERRUPT_LEVEL_N_HANDLER 5 |
262 | INTERRUPT_LEVEL_N_HANDLER 5 |
250 | 263 | ||
251 | /* TT = 0x46, TL = 0, interrupt_level_6 handler */ |
264 | /* TT = 0x46, TL = 0, interrupt_level_6 handler */ |
252 | .org trap_table + TT_INTERRUPT_LEVEL_6*ENTRY_SIZE |
265 | .org trap_table + TT_INTERRUPT_LEVEL_6*ENTRY_SIZE |
253 | .global interrupt_level_6_handler_tl0 |
266 | .global interrupt_level_6_handler_tl0 |
254 | interrupt_level_6_handler_tl0: |
267 | interrupt_level_6_handler_tl0: |
255 | INTERRUPT_LEVEL_N_HANDLER 6 |
268 | INTERRUPT_LEVEL_N_HANDLER 6 |
256 | 269 | ||
257 | /* TT = 0x47, TL = 0, interrupt_level_7 handler */ |
270 | /* TT = 0x47, TL = 0, interrupt_level_7 handler */ |
258 | .org trap_table + TT_INTERRUPT_LEVEL_7*ENTRY_SIZE |
271 | .org trap_table + TT_INTERRUPT_LEVEL_7*ENTRY_SIZE |
259 | .global interrupt_level_7_handler_tl0 |
272 | .global interrupt_level_7_handler_tl0 |
260 | interrupt_level_7_handler_tl0: |
273 | interrupt_level_7_handler_tl0: |
261 | INTERRUPT_LEVEL_N_HANDLER 7 |
274 | INTERRUPT_LEVEL_N_HANDLER 7 |
262 | 275 | ||
263 | /* TT = 0x48, TL = 0, interrupt_level_8 handler */ |
276 | /* TT = 0x48, TL = 0, interrupt_level_8 handler */ |
264 | .org trap_table + TT_INTERRUPT_LEVEL_8*ENTRY_SIZE |
277 | .org trap_table + TT_INTERRUPT_LEVEL_8*ENTRY_SIZE |
265 | .global interrupt_level_8_handler_tl0 |
278 | .global interrupt_level_8_handler_tl0 |
266 | interrupt_level_8_handler_tl0: |
279 | interrupt_level_8_handler_tl0: |
267 | INTERRUPT_LEVEL_N_HANDLER 8 |
280 | INTERRUPT_LEVEL_N_HANDLER 8 |
268 | 281 | ||
269 | /* TT = 0x49, TL = 0, interrupt_level_9 handler */ |
282 | /* TT = 0x49, TL = 0, interrupt_level_9 handler */ |
270 | .org trap_table + TT_INTERRUPT_LEVEL_9*ENTRY_SIZE |
283 | .org trap_table + TT_INTERRUPT_LEVEL_9*ENTRY_SIZE |
271 | .global interrupt_level_9_handler_tl0 |
284 | .global interrupt_level_9_handler_tl0 |
272 | interrupt_level_9_handler_tl0: |
285 | interrupt_level_9_handler_tl0: |
273 | INTERRUPT_LEVEL_N_HANDLER 9 |
286 | INTERRUPT_LEVEL_N_HANDLER 9 |
274 | 287 | ||
275 | /* TT = 0x4a, TL = 0, interrupt_level_10 handler */ |
288 | /* TT = 0x4a, TL = 0, interrupt_level_10 handler */ |
276 | .org trap_table + TT_INTERRUPT_LEVEL_10*ENTRY_SIZE |
289 | .org trap_table + TT_INTERRUPT_LEVEL_10*ENTRY_SIZE |
277 | .global interrupt_level_10_handler_tl0 |
290 | .global interrupt_level_10_handler_tl0 |
278 | interrupt_level_10_handler_tl0: |
291 | interrupt_level_10_handler_tl0: |
279 | INTERRUPT_LEVEL_N_HANDLER 10 |
292 | INTERRUPT_LEVEL_N_HANDLER 10 |
280 | 293 | ||
281 | /* TT = 0x4b, TL = 0, interrupt_level_11 handler */ |
294 | /* TT = 0x4b, TL = 0, interrupt_level_11 handler */ |
282 | .org trap_table + TT_INTERRUPT_LEVEL_11*ENTRY_SIZE |
295 | .org trap_table + TT_INTERRUPT_LEVEL_11*ENTRY_SIZE |
283 | .global interrupt_level_11_handler_tl0 |
296 | .global interrupt_level_11_handler_tl0 |
284 | interrupt_level_11_handler_tl0: |
297 | interrupt_level_11_handler_tl0: |
285 | INTERRUPT_LEVEL_N_HANDLER 11 |
298 | INTERRUPT_LEVEL_N_HANDLER 11 |
286 | 299 | ||
287 | /* TT = 0x4c, TL = 0, interrupt_level_12 handler */ |
300 | /* TT = 0x4c, TL = 0, interrupt_level_12 handler */ |
288 | .org trap_table + TT_INTERRUPT_LEVEL_12*ENTRY_SIZE |
301 | .org trap_table + TT_INTERRUPT_LEVEL_12*ENTRY_SIZE |
289 | .global interrupt_level_12_handler_tl0 |
302 | .global interrupt_level_12_handler_tl0 |
290 | interrupt_level_12_handler_tl0: |
303 | interrupt_level_12_handler_tl0: |
291 | INTERRUPT_LEVEL_N_HANDLER 12 |
304 | INTERRUPT_LEVEL_N_HANDLER 12 |
292 | 305 | ||
293 | /* TT = 0x4d, TL = 0, interrupt_level_13 handler */ |
306 | /* TT = 0x4d, TL = 0, interrupt_level_13 handler */ |
294 | .org trap_table + TT_INTERRUPT_LEVEL_13*ENTRY_SIZE |
307 | .org trap_table + TT_INTERRUPT_LEVEL_13*ENTRY_SIZE |
295 | .global interrupt_level_13_handler_tl0 |
308 | .global interrupt_level_13_handler_tl0 |
296 | interrupt_level_13_handler_tl0: |
309 | interrupt_level_13_handler_tl0: |
297 | INTERRUPT_LEVEL_N_HANDLER 13 |
310 | INTERRUPT_LEVEL_N_HANDLER 13 |
298 | 311 | ||
299 | /* TT = 0x4e, TL = 0, interrupt_level_14 handler */ |
312 | /* TT = 0x4e, TL = 0, interrupt_level_14 handler */ |
300 | .org trap_table + TT_INTERRUPT_LEVEL_14*ENTRY_SIZE |
313 | .org trap_table + TT_INTERRUPT_LEVEL_14*ENTRY_SIZE |
301 | .global interrupt_level_14_handler_tl0 |
314 | .global interrupt_level_14_handler_tl0 |
302 | interrupt_level_14_handler_tl0: |
315 | interrupt_level_14_handler_tl0: |
303 | INTERRUPT_LEVEL_N_HANDLER 14 |
316 | INTERRUPT_LEVEL_N_HANDLER 14 |
304 | 317 | ||
305 | /* TT = 0x4f, TL = 0, interrupt_level_15 handler */ |
318 | /* TT = 0x4f, TL = 0, interrupt_level_15 handler */ |
306 | .org trap_table + TT_INTERRUPT_LEVEL_15*ENTRY_SIZE |
319 | .org trap_table + TT_INTERRUPT_LEVEL_15*ENTRY_SIZE |
307 | .global interrupt_level_15_handler_tl0 |
320 | .global interrupt_level_15_handler_tl0 |
308 | interrupt_level_15_handler_tl0: |
321 | interrupt_level_15_handler_tl0: |
309 | INTERRUPT_LEVEL_N_HANDLER 15 |
322 | INTERRUPT_LEVEL_N_HANDLER 15 |
310 | 323 | ||
311 | /* TT = 0x60, TL = 0, interrupt_vector_trap handler */ |
324 | /* TT = 0x60, TL = 0, interrupt_vector_trap handler */ |
312 | .org trap_table + TT_INTERRUPT_VECTOR_TRAP*ENTRY_SIZE |
325 | .org trap_table + TT_INTERRUPT_VECTOR_TRAP*ENTRY_SIZE |
313 | .global interrupt_vector_trap_handler_tl0 |
326 | .global interrupt_vector_trap_handler_tl0 |
314 | interrupt_vector_trap_handler_tl0: |
327 | interrupt_vector_trap_handler_tl0: |
315 | INTERRUPT_VECTOR_TRAP_HANDLER |
328 | INTERRUPT_VECTOR_TRAP_HANDLER |
316 | 329 | ||
317 | /* TT = 0x64, TL = 0, fast_instruction_access_MMU_miss */ |
330 | /* TT = 0x64, TL = 0, fast_instruction_access_MMU_miss */ |
318 | .org trap_table + TT_FAST_INSTRUCTION_ACCESS_MMU_MISS*ENTRY_SIZE |
331 | .org trap_table + TT_FAST_INSTRUCTION_ACCESS_MMU_MISS*ENTRY_SIZE |
319 | .global fast_instruction_access_mmu_miss_handler_tl0 |
332 | .global fast_instruction_access_mmu_miss_handler_tl0 |
320 | fast_instruction_access_mmu_miss_handler_tl0: |
333 | fast_instruction_access_mmu_miss_handler_tl0: |
321 | FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
334 | FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
322 | 335 | ||
323 | /* TT = 0x68, TL = 0, fast_data_access_MMU_miss */ |
336 | /* TT = 0x68, TL = 0, fast_data_access_MMU_miss */ |
324 | .org trap_table + TT_FAST_DATA_ACCESS_MMU_MISS*ENTRY_SIZE |
337 | .org trap_table + TT_FAST_DATA_ACCESS_MMU_MISS*ENTRY_SIZE |
325 | .global fast_data_access_mmu_miss_handler_tl0 |
338 | .global fast_data_access_mmu_miss_handler_tl0 |
326 | fast_data_access_mmu_miss_handler_tl0: |
339 | fast_data_access_mmu_miss_handler_tl0: |
327 | FAST_DATA_ACCESS_MMU_MISS_HANDLER 0 |
340 | FAST_DATA_ACCESS_MMU_MISS_HANDLER 0 |
328 | 341 | ||
329 | /* TT = 0x6c, TL = 0, fast_data_access_protection */ |
342 | /* TT = 0x6c, TL = 0, fast_data_access_protection */ |
330 | .org trap_table + TT_FAST_DATA_ACCESS_PROTECTION*ENTRY_SIZE |
343 | .org trap_table + TT_FAST_DATA_ACCESS_PROTECTION*ENTRY_SIZE |
331 | .global fast_data_access_protection_handler_tl0 |
344 | .global fast_data_access_protection_handler_tl0 |
332 | fast_data_access_protection_handler_tl0: |
345 | fast_data_access_protection_handler_tl0: |
333 | FAST_DATA_ACCESS_PROTECTION_HANDLER 0 |
346 | FAST_DATA_ACCESS_PROTECTION_HANDLER 0 |
334 | 347 | ||
335 | /* TT = 0x80, TL = 0, spill_0_normal handler */ |
348 | /* TT = 0x80, TL = 0, spill_0_normal handler */ |
336 | .org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
349 | .org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
337 | .global spill_0_normal_tl0 |
350 | .global spill_0_normal_tl0 |
338 | spill_0_normal_tl0: |
351 | spill_0_normal_tl0: |
339 | SPILL_NORMAL_HANDLER_KERNEL |
352 | SPILL_NORMAL_HANDLER_KERNEL |
340 | 353 | ||
341 | /* TT = 0x84, TL = 0, spill_1_normal handler */ |
354 | /* TT = 0x84, TL = 0, spill_1_normal handler */ |
342 | .org trap_table + TT_SPILL_1_NORMAL*ENTRY_SIZE |
355 | .org trap_table + TT_SPILL_1_NORMAL*ENTRY_SIZE |
343 | .global spill_1_normal_tl0 |
356 | .global spill_1_normal_tl0 |
344 | spill_1_normal_tl0: |
357 | spill_1_normal_tl0: |
345 | SPILL_NORMAL_HANDLER_USERSPACE |
358 | SPILL_NORMAL_HANDLER_USERSPACE |
346 | 359 | ||
347 | /* TT = 0x88, TL = 0, spill_2_normal handler */ |
360 | /* TT = 0x88, TL = 0, spill_2_normal handler */ |
348 | .org trap_table + TT_SPILL_2_NORMAL*ENTRY_SIZE |
361 | .org trap_table + TT_SPILL_2_NORMAL*ENTRY_SIZE |
349 | .global spill_2_normal_tl0 |
362 | .global spill_2_normal_tl0 |
350 | spill_2_normal_tl0: |
363 | spill_2_normal_tl0: |
351 | SPILL_TO_USPACE_WINDOW_BUFFER |
364 | SPILL_TO_USPACE_WINDOW_BUFFER |
352 | 365 | ||
353 | /* TT = 0xa0, TL = 0, spill_0_other handler */ |
366 | /* TT = 0xa0, TL = 0, spill_0_other handler */ |
354 | .org trap_table + TT_SPILL_0_OTHER*ENTRY_SIZE |
367 | .org trap_table + TT_SPILL_0_OTHER*ENTRY_SIZE |
355 | .global spill_0_other_tl0 |
368 | .global spill_0_other_tl0 |
356 | spill_0_other_tl0: |
369 | spill_0_other_tl0: |
357 | SPILL_TO_USPACE_WINDOW_BUFFER |
370 | SPILL_TO_USPACE_WINDOW_BUFFER |
358 | 371 | ||
359 | /* TT = 0xc0, TL = 0, fill_0_normal handler */ |
372 | /* TT = 0xc0, TL = 0, fill_0_normal handler */ |
360 | .org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
373 | .org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
361 | .global fill_0_normal_tl0 |
374 | .global fill_0_normal_tl0 |
362 | fill_0_normal_tl0: |
375 | fill_0_normal_tl0: |
363 | FILL_NORMAL_HANDLER_KERNEL |
376 | FILL_NORMAL_HANDLER_KERNEL |
364 | 377 | ||
365 | /* TT = 0xc4, TL = 0, fill_1_normal handler */ |
378 | /* TT = 0xc4, TL = 0, fill_1_normal handler */ |
366 | .org trap_table + TT_FILL_1_NORMAL*ENTRY_SIZE |
379 | .org trap_table + TT_FILL_1_NORMAL*ENTRY_SIZE |
367 | .global fill_1_normal_tl0 |
380 | .global fill_1_normal_tl0 |
368 | fill_1_normal_tl0: |
381 | fill_1_normal_tl0: |
369 | FILL_NORMAL_HANDLER_USERSPACE |
382 | FILL_NORMAL_HANDLER_USERSPACE |
370 | 383 | ||
371 | /* TT = 0x100 - 0x17f, TL = 0, trap_instruction_0 - trap_instruction_7f */ |
384 | /* TT = 0x100 - 0x17f, TL = 0, trap_instruction_0 - trap_instruction_7f */ |
372 | .irp cur, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,\ |
385 | .irp cur, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,\ |
373 | 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,\ |
386 | 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,\ |
374 | 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57,\ |
387 | 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57,\ |
375 | 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76,\ |
388 | 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76,\ |
376 | 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,\ |
389 | 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,\ |
377 | 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,\ |
390 | 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,\ |
378 | 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126,\ |
391 | 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126,\ |
379 | 127 |
392 | 127 |
380 | .org trap_table + (TT_TRAP_INSTRUCTION_0+\cur)*ENTRY_SIZE |
393 | .org trap_table + (TT_TRAP_INSTRUCTION_0+\cur)*ENTRY_SIZE |
381 | .global trap_instruction_\cur\()_tl0 |
394 | .global trap_instruction_\cur\()_tl0 |
382 | trap_instruction_\cur\()_tl0: |
395 | trap_instruction_\cur\()_tl0: |
383 | ba trap_instruction_handler |
396 | ba trap_instruction_handler |
384 | mov \cur, %g2 |
397 | mov \cur, %g2 |
385 | .endr |
398 | .endr |
386 | 399 | ||
387 | /* |
400 | /* |
388 | * Handlers for TL>0. |
401 | * Handlers for TL>0. |
389 | */ |
402 | */ |
390 | 403 | ||
391 | /* TT = 0x08, TL > 0, instruction_access_exception */ |
404 | /* TT = 0x08, TL > 0, instruction_access_exception */ |
392 | /* TT = 0x08, TL > 0, IAE_privilege_violation on UltraSPARC T2 */ |
405 | /* TT = 0x08, TL > 0, IAE_privilege_violation on UltraSPARC T2 */ |
393 | .org trap_table + (TT_INSTRUCTION_ACCESS_EXCEPTION+512)*ENTRY_SIZE |
406 | .org trap_table + (TT_INSTRUCTION_ACCESS_EXCEPTION+512)*ENTRY_SIZE |
394 | .global instruction_access_exception_tl1 |
407 | .global instruction_access_exception_tl1 |
395 | instruction_access_exception_tl1: |
408 | instruction_access_exception_tl1: |
396 | wrpr %g0, 1, %tl |
409 | wrpr %g0, 1, %tl |
397 | PREEMPTIBLE_HANDLER instruction_access_exception |
410 | PREEMPTIBLE_HANDLER instruction_access_exception |
398 | 411 | ||
- | 412 | /* TT = 0x09, TL > 0, instruction_access_mmu_miss */ |
|
- | 413 | .org trap_table + (TT_INSTRUCTION_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
|
- | 414 | .global instruction_access_mmu_miss_handler_tl1 |
|
- | 415 | wrpr %g0, 1, %tl |
|
- | 416 | ba fast_instruction_access_mmu_miss_handler_tl0 |
|
- | 417 | nop |
|
- | 418 | ||
399 | /* TT = 0x0a, TL > 0, instruction_access_error */ |
419 | /* TT = 0x0a, TL > 0, instruction_access_error */ |
400 | .org trap_table + (TT_INSTRUCTION_ACCESS_ERROR+512)*ENTRY_SIZE |
420 | .org trap_table + (TT_INSTRUCTION_ACCESS_ERROR+512)*ENTRY_SIZE |
401 | .global instruction_access_error_tl1 |
421 | .global instruction_access_error_tl1 |
402 | instruction_access_error_tl1: |
422 | instruction_access_error_tl1: |
403 | wrpr %g0, 1, %tl |
423 | wrpr %g0, 1, %tl |
404 | PREEMPTIBLE_HANDLER instruction_access_error |
424 | PREEMPTIBLE_HANDLER instruction_access_error |
405 | 425 | ||
406 | /* TT = 0x0b, TL > 0, IAE_unauth_access */ |
426 | /* TT = 0x0b, TL > 0, IAE_unauth_access */ |
407 | .org trap_table + (TT_IAE_UNAUTH_ACCESS+512)*ENTRY_SIZE |
427 | .org trap_table + (TT_IAE_UNAUTH_ACCESS+512)*ENTRY_SIZE |
408 | .global iae_unauth_access_tl1 |
428 | .global iae_unauth_access_tl1 |
409 | iae_unauth_access_tl1: |
429 | iae_unauth_access_tl1: |
410 | wrpr %g0, 1, %tl |
430 | wrpr %g0, 1, %tl |
411 | PREEMPTIBLE_HANDLER instruction_access_exception |
431 | PREEMPTIBLE_HANDLER instruction_access_exception |
412 | 432 | ||
413 | /* TT = 0x0c, TL > 0, IAE_nfo_page */ |
433 | /* TT = 0x0c, TL > 0, IAE_nfo_page */ |
414 | .org trap_table + (TT_IAE_NFO_PAGE+512)*ENTRY_SIZE |
434 | .org trap_table + (TT_IAE_NFO_PAGE+512)*ENTRY_SIZE |
415 | .global iae_nfo_page_tl1 |
435 | .global iae_nfo_page_tl1 |
416 | iae_nfo_page_tl1: |
436 | iae_nfo_page_tl1: |
417 | wrpr %g0, 1, %tl |
437 | wrpr %g0, 1, %tl |
418 | PREEMPTIBLE_HANDLER instruction_access_exception |
438 | PREEMPTIBLE_HANDLER instruction_access_exception |
419 | 439 | ||
420 | /* TT = 0x10, TL > 0, illegal_instruction */ |
440 | /* TT = 0x10, TL > 0, illegal_instruction */ |
421 | .org trap_table + (TT_ILLEGAL_INSTRUCTION+512)*ENTRY_SIZE |
441 | .org trap_table + (TT_ILLEGAL_INSTRUCTION+512)*ENTRY_SIZE |
422 | .global illegal_instruction_tl1 |
442 | .global illegal_instruction_tl1 |
423 | illegal_instruction_tl1: |
443 | illegal_instruction_tl1: |
424 | wrpr %g0, 1, %tl |
444 | wrpr %g0, 1, %tl |
425 | PREEMPTIBLE_HANDLER illegal_instruction |
445 | PREEMPTIBLE_HANDLER illegal_instruction |
426 | 446 | ||
427 | /* TT = 0x14, TL > 0, DAE_invalid_asi */ |
447 | /* TT = 0x14, TL > 0, DAE_invalid_asi */ |
428 | .org trap_table + (TT_DAE_INVALID_ASI+512)*ENTRY_SIZE |
448 | .org trap_table + (TT_DAE_INVALID_ASI+512)*ENTRY_SIZE |
429 | .global dae_invalid_asi_tl1 |
449 | .global dae_invalid_asi_tl1 |
430 | dae_invalid_asi_tl1: |
450 | dae_invalid_asi_tl1: |
431 | wrpr %g0, 1, %tl |
451 | wrpr %g0, 1, %tl |
432 | PREEMPTIBLE_HANDLER data_access_exception |
452 | PREEMPTIBLE_HANDLER data_access_exception |
433 | 453 | ||
434 | /* TT = 0x15, TL > 0, DAE_privilege_violation */ |
454 | /* TT = 0x15, TL > 0, DAE_privilege_violation */ |
435 | .org trap_table + (TT_DAE_PRIVILEGE_VIOLATION+512)*ENTRY_SIZE |
455 | .org trap_table + (TT_DAE_PRIVILEGE_VIOLATION+512)*ENTRY_SIZE |
436 | .global dae_privilege_violation_tl1 |
456 | .global dae_privilege_violation_tl1 |
437 | dae_privilege_violation_tl1: |
457 | dae_privilege_violation_tl1: |
438 | wrpr %g0, 1, %tl |
458 | wrpr %g0, 1, %tl |
439 | PREEMPTIBLE_HANDLER data_access_exception |
459 | PREEMPTIBLE_HANDLER data_access_exception |
440 | 460 | ||
441 | /* TT = 0x16, TL > 0, DAE_nc_page */ |
461 | /* TT = 0x16, TL > 0, DAE_nc_page */ |
442 | .org trap_table + (TT_DAE_NC_PAGE+512)*ENTRY_SIZE |
462 | .org trap_table + (TT_DAE_NC_PAGE+512)*ENTRY_SIZE |
443 | .global dae_nc_page_tl1 |
463 | .global dae_nc_page_tl1 |
444 | dae_nc_page_tl1: |
464 | dae_nc_page_tl1: |
445 | wrpr %g0, 1, %tl |
465 | wrpr %g0, 1, %tl |
446 | PREEMPTIBLE_HANDLER data_access_exception |
466 | PREEMPTIBLE_HANDLER data_access_exception |
447 | 467 | ||
448 | /* TT = 0x17, TL > 0, DAE_nfo_page */ |
468 | /* TT = 0x17, TL > 0, DAE_nfo_page */ |
449 | .org trap_table + (TT_DAE_NFO_PAGE+512)*ENTRY_SIZE |
469 | .org trap_table + (TT_DAE_NFO_PAGE+512)*ENTRY_SIZE |
450 | .global dae_nfo_page_tl1 |
470 | .global dae_nfo_page_tl1 |
451 | dae_nfo_page_tl1: |
471 | dae_nfo_page_tl1: |
452 | wrpr %g0, 1, %tl |
472 | wrpr %g0, 1, %tl |
453 | PREEMPTIBLE_HANDLER data_access_exception |
473 | PREEMPTIBLE_HANDLER data_access_exception |
454 | 474 | ||
455 | /* TT = 0x24, TL > 0, clean_window handler */ |
475 | /* TT = 0x24, TL > 0, clean_window handler */ |
456 | .org trap_table + (TT_CLEAN_WINDOW+512)*ENTRY_SIZE |
476 | .org trap_table + (TT_CLEAN_WINDOW+512)*ENTRY_SIZE |
457 | .global clean_window_tl1 |
477 | .global clean_window_tl1 |
458 | clean_window_tl1: |
478 | clean_window_tl1: |
459 | CLEAN_WINDOW_HANDLER |
479 | CLEAN_WINDOW_HANDLER |
460 | 480 | ||
461 | /* TT = 0x28, TL > 0, division_by_zero */ |
481 | /* TT = 0x28, TL > 0, division_by_zero */ |
462 | .org trap_table + (TT_DIVISION_BY_ZERO+512)*ENTRY_SIZE |
482 | .org trap_table + (TT_DIVISION_BY_ZERO+512)*ENTRY_SIZE |
463 | .global division_by_zero_tl1 |
483 | .global division_by_zero_tl1 |
464 | division_by_zero_tl1: |
484 | division_by_zero_tl1: |
465 | wrpr %g0, 1, %tl |
485 | wrpr %g0, 1, %tl |
466 | PREEMPTIBLE_HANDLER division_by_zero |
486 | PREEMPTIBLE_HANDLER division_by_zero |
467 | 487 | ||
468 | /* TT = 0x30, TL > 0, data_access_exception */ |
488 | /* TT = 0x30, TL > 0, data_access_exception */ |
469 | .org trap_table + (TT_DATA_ACCESS_EXCEPTION+512)*ENTRY_SIZE |
489 | .org trap_table + (TT_DATA_ACCESS_EXCEPTION+512)*ENTRY_SIZE |
470 | .global data_access_exception_tl1 |
490 | .global data_access_exception_tl1 |
471 | data_access_exception_tl1: |
491 | data_access_exception_tl1: |
472 | /*wrpr %g0, 1, %tl |
492 | /*wrpr %g0, 1, %tl |
473 | wrpr %g0, PSTATE_AG_BIT | PSTATE_PRIV_BIT, %pstate |
493 | wrpr %g0, PSTATE_AG_BIT | PSTATE_PRIV_BIT, %pstate |
474 | PREEMPTIBLE_HANDLER data_access_exception*/ |
494 | PREEMPTIBLE_HANDLER data_access_exception*/ |
475 | 495 | ||
- | 496 | /* TT = 0x31, TL > 0, data_access_mmu_miss */ |
|
- | 497 | .org trap_table + (TT_DATA_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
|
- | 498 | .global data_access_mmu_miss_tl1 |
|
- | 499 | data_access_mmu_miss_tl1: |
|
- | 500 | ba fast_data_access_mmu_miss_handler_tl1 |
|
- | 501 | nop |
|
- | 502 | ||
- | 503 | ||
476 | /* TT = 0x32, TL > 0, data_access_error */ |
504 | /* TT = 0x32, TL > 0, data_access_error */ |
477 | .org trap_table + (TT_DATA_ACCESS_ERROR+512)*ENTRY_SIZE |
505 | .org trap_table + (TT_DATA_ACCESS_ERROR+512)*ENTRY_SIZE |
478 | .global data_access_error_tl1 |
506 | .global data_access_error_tl1 |
479 | data_access_error_tl1: |
507 | data_access_error_tl1: |
480 | wrpr %g0, 1, %tl |
508 | wrpr %g0, 1, %tl |
481 | PREEMPTIBLE_HANDLER data_access_error |
509 | PREEMPTIBLE_HANDLER data_access_error |
482 | 510 | ||
483 | /* TT = 0x34, TL > 0, mem_address_not_aligned */ |
511 | /* TT = 0x34, TL > 0, mem_address_not_aligned */ |
484 | .org trap_table + (TT_MEM_ADDRESS_NOT_ALIGNED+512)*ENTRY_SIZE |
512 | .org trap_table + (TT_MEM_ADDRESS_NOT_ALIGNED+512)*ENTRY_SIZE |
485 | .global mem_address_not_aligned_tl1 |
513 | .global mem_address_not_aligned_tl1 |
486 | mem_address_not_aligned_tl1: |
514 | mem_address_not_aligned_tl1: |
487 | wrpr %g0, 1, %tl |
515 | wrpr %g0, 1, %tl |
488 | PREEMPTIBLE_HANDLER mem_address_not_aligned |
516 | PREEMPTIBLE_HANDLER mem_address_not_aligned |
489 | 517 | ||
490 | /* TT = 0x68, TL > 0, fast_data_access_MMU_miss */ |
518 | /* TT = 0x68, TL > 0, fast_data_access_MMU_miss */ |
491 | .org trap_table + (TT_FAST_DATA_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
519 | .org trap_table + (TT_FAST_DATA_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
492 | .global fast_data_access_mmu_miss_handler_tl1 |
520 | .global fast_data_access_mmu_miss_handler_tl1 |
493 | fast_data_access_mmu_miss_handler_tl1: |
521 | fast_data_access_mmu_miss_handler_tl1: |
494 | FAST_DATA_ACCESS_MMU_MISS_HANDLER 1 |
522 | FAST_DATA_ACCESS_MMU_MISS_HANDLER 1 |
495 | 523 | ||
496 | /* TT = 0x6c, TL > 0, fast_data_access_protection */ |
524 | /* TT = 0x6c, TL > 0, fast_data_access_protection */ |
497 | .org trap_table + (TT_FAST_DATA_ACCESS_PROTECTION+512)*ENTRY_SIZE |
525 | .org trap_table + (TT_FAST_DATA_ACCESS_PROTECTION+512)*ENTRY_SIZE |
498 | .global fast_data_access_protection_handler_tl1 |
526 | .global fast_data_access_protection_handler_tl1 |
499 | fast_data_access_protection_handler_tl1: |
527 | fast_data_access_protection_handler_tl1: |
500 | FAST_DATA_ACCESS_PROTECTION_HANDLER 1 |
528 | FAST_DATA_ACCESS_PROTECTION_HANDLER 1 |
501 | 529 | ||
502 | /* TT = 0x80, TL > 0, spill_0_normal handler */ |
530 | /* TT = 0x80, TL > 0, spill_0_normal handler */ |
503 | .org trap_table + (TT_SPILL_0_NORMAL+512)*ENTRY_SIZE |
531 | .org trap_table + (TT_SPILL_0_NORMAL+512)*ENTRY_SIZE |
504 | .global spill_0_normal_tl1 |
532 | .global spill_0_normal_tl1 |
505 | spill_0_normal_tl1: |
533 | spill_0_normal_tl1: |
506 | SPILL_NORMAL_HANDLER_KERNEL |
534 | SPILL_NORMAL_HANDLER_KERNEL |
507 | 535 | ||
508 | /* TT = 0x88, TL > 0, spill_2_normal handler */ |
536 | /* TT = 0x88, TL > 0, spill_2_normal handler */ |
509 | .org trap_table + (TT_SPILL_2_NORMAL+512)*ENTRY_SIZE |
537 | .org trap_table + (TT_SPILL_2_NORMAL+512)*ENTRY_SIZE |
510 | .global spill_2_normal_tl1 |
538 | .global spill_2_normal_tl1 |
511 | spill_2_normal_tl1: |
539 | spill_2_normal_tl1: |
512 | SPILL_TO_USPACE_WINDOW_BUFFER |
540 | SPILL_TO_USPACE_WINDOW_BUFFER |
513 | 541 | ||
514 | /* TT = 0xa0, TL > 0, spill_0_other handler */ |
542 | /* TT = 0xa0, TL > 0, spill_0_other handler */ |
515 | .org trap_table + (TT_SPILL_0_OTHER+512)*ENTRY_SIZE |
543 | .org trap_table + (TT_SPILL_0_OTHER+512)*ENTRY_SIZE |
516 | .global spill_0_other_tl1 |
544 | .global spill_0_other_tl1 |
517 | spill_0_other_tl1: |
545 | spill_0_other_tl1: |
518 | SPILL_TO_USPACE_WINDOW_BUFFER |
546 | SPILL_TO_USPACE_WINDOW_BUFFER |
519 | 547 | ||
520 | /* TT = 0xc0, TL > 0, fill_0_normal handler */ |
548 | /* TT = 0xc0, TL > 0, fill_0_normal handler */ |
521 | .org trap_table + (TT_FILL_0_NORMAL+512)*ENTRY_SIZE |
549 | .org trap_table + (TT_FILL_0_NORMAL+512)*ENTRY_SIZE |
522 | .global fill_0_normal_tl1 |
550 | .global fill_0_normal_tl1 |
523 | fill_0_normal_tl1: |
551 | fill_0_normal_tl1: |
524 | FILL_NORMAL_HANDLER_KERNEL |
552 | FILL_NORMAL_HANDLER_KERNEL |
525 | 553 | ||
526 | .align TABLE_SIZE |
554 | .align TABLE_SIZE |
527 | 555 | ||
528 | 556 | ||
529 | /* |
557 | /* |
530 | * Spills the window at CWP + 2 to the kernel stack. This macro is to be |
558 | * Spills the window at CWP + 2 to the kernel stack. This macro is to be |
531 | * used before doing SAVE when the spill trap is undesirable. |
559 | * used before doing SAVE when the spill trap is undesirable. |
532 | * |
560 | * |
533 | * Parameters: |
561 | * Parameters: |
534 | * tmpreg1 global register to be used for scratching purposes |
562 | * tmpreg1 global register to be used for scratching purposes |
535 | * tmpreg2 global register to be used for scratching purposes |
563 | * tmpreg2 global register to be used for scratching purposes |
536 | */ |
564 | */ |
537 | .macro INLINE_SPILL tmpreg1, tmpreg2 |
565 | .macro INLINE_SPILL tmpreg1, tmpreg2 |
538 | ! CWP := CWP + 2 |
566 | ! CWP := CWP + 2 |
539 | rdpr %cwp, \tmpreg2 |
567 | rdpr %cwp, \tmpreg2 |
540 | add \tmpreg2, 2, \tmpreg1 |
568 | add \tmpreg2, 2, \tmpreg1 |
541 | and \tmpreg1, NWINDOWS - 1, \tmpreg1 ! modulo NWINDOWS |
569 | and \tmpreg1, NWINDOWS - 1, \tmpreg1 ! modulo NWINDOWS |
542 | wrpr \tmpreg1, %cwp |
570 | wrpr \tmpreg1, %cwp |
543 | 571 | ||
544 | ! spill to kernel stack |
572 | ! spill to kernel stack |
545 | stx %l0, [%sp + STACK_BIAS + L0_OFFSET] |
573 | stx %l0, [%sp + STACK_BIAS + L0_OFFSET] |
546 | stx %l1, [%sp + STACK_BIAS + L1_OFFSET] |
574 | stx %l1, [%sp + STACK_BIAS + L1_OFFSET] |
547 | stx %l2, [%sp + STACK_BIAS + L2_OFFSET] |
575 | stx %l2, [%sp + STACK_BIAS + L2_OFFSET] |
548 | stx %l3, [%sp + STACK_BIAS + L3_OFFSET] |
576 | stx %l3, [%sp + STACK_BIAS + L3_OFFSET] |
549 | stx %l4, [%sp + STACK_BIAS + L4_OFFSET] |
577 | stx %l4, [%sp + STACK_BIAS + L4_OFFSET] |
550 | stx %l5, [%sp + STACK_BIAS + L5_OFFSET] |
578 | stx %l5, [%sp + STACK_BIAS + L5_OFFSET] |
551 | stx %l6, [%sp + STACK_BIAS + L6_OFFSET] |
579 | stx %l6, [%sp + STACK_BIAS + L6_OFFSET] |
552 | stx %l7, [%sp + STACK_BIAS + L7_OFFSET] |
580 | stx %l7, [%sp + STACK_BIAS + L7_OFFSET] |
553 | stx %i0, [%sp + STACK_BIAS + I0_OFFSET] |
581 | stx %i0, [%sp + STACK_BIAS + I0_OFFSET] |
554 | stx %i1, [%sp + STACK_BIAS + I1_OFFSET] |
582 | stx %i1, [%sp + STACK_BIAS + I1_OFFSET] |
555 | stx %i2, [%sp + STACK_BIAS + I2_OFFSET] |
583 | stx %i2, [%sp + STACK_BIAS + I2_OFFSET] |
556 | stx %i3, [%sp + STACK_BIAS + I3_OFFSET] |
584 | stx %i3, [%sp + STACK_BIAS + I3_OFFSET] |
557 | stx %i4, [%sp + STACK_BIAS + I4_OFFSET] |
585 | stx %i4, [%sp + STACK_BIAS + I4_OFFSET] |
558 | stx %i5, [%sp + STACK_BIAS + I5_OFFSET] |
586 | stx %i5, [%sp + STACK_BIAS + I5_OFFSET] |
559 | stx %i6, [%sp + STACK_BIAS + I6_OFFSET] |
587 | stx %i6, [%sp + STACK_BIAS + I6_OFFSET] |
560 | stx %i7, [%sp + STACK_BIAS + I7_OFFSET] |
588 | stx %i7, [%sp + STACK_BIAS + I7_OFFSET] |
561 | 589 | ||
562 | ! CWP := CWP - 2 |
590 | ! CWP := CWP - 2 |
563 | wrpr \tmpreg2, %cwp |
591 | wrpr \tmpreg2, %cwp |
564 | 592 | ||
565 | saved |
593 | saved |
566 | .endm |
594 | .endm |
567 | 595 | ||
568 | /* |
596 | /* |
569 | * Fill the window at CWP - 1 from the kernel stack. This macro is to be |
597 | * Fill the window at CWP - 1 from the kernel stack. This macro is to be |
570 | * used before doing RESTORE when the fill trap is undesirable. |
598 | * used before doing RESTORE when the fill trap is undesirable. |
571 | * |
599 | * |
572 | * Parameters: |
600 | * Parameters: |
573 | * tmpreg1 global register to be used for scratching purposes |
601 | * tmpreg1 global register to be used for scratching purposes |
574 | * tmpreg2 global register to be used for scratching purposes |
602 | * tmpreg2 global register to be used for scratching purposes |
575 | */ |
603 | */ |
576 | .macro INLINE_FILL tmpreg1, tmpreg2 |
604 | .macro INLINE_FILL tmpreg1, tmpreg2 |
577 | ! CWP := CWP - 1 |
605 | ! CWP := CWP - 1 |
578 | rdpr %cwp, \tmpreg2 |
606 | rdpr %cwp, \tmpreg2 |
579 | add \tmpreg2, NWINDOWS - 1, \tmpreg1 |
607 | add \tmpreg2, NWINDOWS - 1, \tmpreg1 |
580 | and \tmpreg1, NWINDOWS - 1, \tmpreg1 |
608 | and \tmpreg1, NWINDOWS - 1, \tmpreg1 |
581 | wrpr \tmpreg1, %cwp |
609 | wrpr \tmpreg1, %cwp |
582 | 610 | ||
583 | ! fill from kernel stack |
611 | ! fill from kernel stack |
584 | ldx [%sp + STACK_BIAS + L0_OFFSET], %l0 |
612 | ldx [%sp + STACK_BIAS + L0_OFFSET], %l0 |
585 | ldx [%sp + STACK_BIAS + L1_OFFSET], %l1 |
613 | ldx [%sp + STACK_BIAS + L1_OFFSET], %l1 |
586 | ldx [%sp + STACK_BIAS + L2_OFFSET], %l2 |
614 | ldx [%sp + STACK_BIAS + L2_OFFSET], %l2 |
587 | ldx [%sp + STACK_BIAS + L3_OFFSET], %l3 |
615 | ldx [%sp + STACK_BIAS + L3_OFFSET], %l3 |
588 | ldx [%sp + STACK_BIAS + L4_OFFSET], %l4 |
616 | ldx [%sp + STACK_BIAS + L4_OFFSET], %l4 |
589 | ldx [%sp + STACK_BIAS + L5_OFFSET], %l5 |
617 | ldx [%sp + STACK_BIAS + L5_OFFSET], %l5 |
590 | ldx [%sp + STACK_BIAS + L6_OFFSET], %l6 |
618 | ldx [%sp + STACK_BIAS + L6_OFFSET], %l6 |
591 | ldx [%sp + STACK_BIAS + L7_OFFSET], %l7 |
619 | ldx [%sp + STACK_BIAS + L7_OFFSET], %l7 |
592 | ldx [%sp + STACK_BIAS + I0_OFFSET], %i0 |
620 | ldx [%sp + STACK_BIAS + I0_OFFSET], %i0 |
593 | ldx [%sp + STACK_BIAS + I1_OFFSET], %i1 |
621 | ldx [%sp + STACK_BIAS + I1_OFFSET], %i1 |
594 | ldx [%sp + STACK_BIAS + I2_OFFSET], %i2 |
622 | ldx [%sp + STACK_BIAS + I2_OFFSET], %i2 |
595 | ldx [%sp + STACK_BIAS + I3_OFFSET], %i3 |
623 | ldx [%sp + STACK_BIAS + I3_OFFSET], %i3 |
596 | ldx [%sp + STACK_BIAS + I4_OFFSET], %i4 |
624 | ldx [%sp + STACK_BIAS + I4_OFFSET], %i4 |
597 | ldx [%sp + STACK_BIAS + I5_OFFSET], %i5 |
625 | ldx [%sp + STACK_BIAS + I5_OFFSET], %i5 |
598 | ldx [%sp + STACK_BIAS + I6_OFFSET], %i6 |
626 | ldx [%sp + STACK_BIAS + I6_OFFSET], %i6 |
599 | ldx [%sp + STACK_BIAS + I7_OFFSET], %i7 |
627 | ldx [%sp + STACK_BIAS + I7_OFFSET], %i7 |
600 | 628 | ||
601 | ! CWP := CWP + 1 |
629 | ! CWP := CWP + 1 |
602 | wrpr \tmpreg2, %cwp |
630 | wrpr \tmpreg2, %cwp |
603 | 631 | ||
604 | restored |
632 | restored |
605 | .endm |
633 | .endm |
606 | 634 | ||
607 | #define NOT(x) ((x) == 0) |
635 | #define NOT(x) ((x) == 0) |
608 | 636 | ||
609 | /* |
637 | /* |
610 | * Perform all the actions of the preemptible trap handler which are common |
638 | * Perform all the actions of the preemptible trap handler which are common |
611 | * for trapping from kernel and trapping from userspace, including call of the |
639 | * for trapping from kernel and trapping from userspace, including call of the |
612 | * higher level service routine. |
640 | * higher level service routine. |
613 | * |
641 | * |
614 | * Important note: |
642 | * Important note: |
615 | * This macro must be inserted between the "2:" and "4:" labels. The |
643 | * This macro must be inserted between the "2:" and "4:" labels. The |
616 | * inserting code must be aware of the usage of all the registers |
644 | * inserting code must be aware of the usage of all the registers |
617 | * contained in this macro. |
645 | * contained in this macro. |
618 | */ |
646 | */ |
619 | .macro MIDDLE_PART is_syscall |
647 | .macro MIDDLE_PART is_syscall |
620 | /* copy higher level routine's address and its argument */ |
648 | /* copy higher level routine's address and its argument */ |
621 | mov %g1, %l0 |
649 | mov %g1, %l0 |
622 | .if NOT(\is_syscall) |
650 | .if NOT(\is_syscall) |
623 | mov %g2, %o0 |
651 | mov %g2, %o0 |
624 | .else |
652 | .else |
625 | ! store the syscall number on the stack as 7th argument |
653 | ! store the syscall number on the stack as 7th argument |
626 | stx %g2, [%sp + STACK_WINDOW_SAVE_AREA_SIZE + STACK_BIAS + STACK_ARG6] |
654 | stx %g2, [%sp + STACK_WINDOW_SAVE_AREA_SIZE + STACK_BIAS + STACK_ARG6] |
627 | .endif |
655 | .endif |
628 | 656 | ||
629 | /* |
657 | /* |
630 | * Save TSTATE, TPC and TNPC aside. |
658 | * Save TSTATE, TPC and TNPC aside. |
631 | */ |
659 | */ |
632 | rdpr %tstate, %g1 |
660 | rdpr %tstate, %g1 |
633 | rdpr %tpc, %g2 |
661 | rdpr %tpc, %g2 |
634 | rdpr %tnpc, %g3 |
662 | rdpr %tnpc, %g3 |
635 | 663 | ||
636 | stx %g1, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TSTATE] |
664 | stx %g1, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TSTATE] |
637 | stx %g2, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TPC] |
665 | stx %g2, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TPC] |
638 | stx %g3, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC] |
666 | stx %g3, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC] |
639 | 667 | ||
640 | /* |
668 | /* |
641 | * Save the Y register. |
669 | * Save the Y register. |
642 | * This register is deprecated according to SPARC V9 specification |
670 | * This register is deprecated according to SPARC V9 specification |
643 | * and is only present for backward compatibility with previous |
671 | * and is only present for backward compatibility with previous |
644 | * versions of the SPARC architecture. |
672 | * versions of the SPARC architecture. |
645 | * Surprisingly, gcc makes use of this register without a notice. |
673 | * Surprisingly, gcc makes use of this register without a notice. |
646 | */ |
674 | */ |
647 | rd %y, %g4 |
675 | rd %y, %g4 |
648 | stx %g4, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_Y] |
676 | stx %g4, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_Y] |
649 | 677 | ||
650 | /* switch to TL = 0, explicitly enable FPU */ |
678 | /* switch to TL = 0, explicitly enable FPU */ |
651 | wrpr %g0, 0, %tl |
679 | wrpr %g0, 0, %tl |
652 | wrpr %g0, 0, %gl |
680 | wrpr %g0, 0, %gl |
653 | wrpr %g0, PSTATE_PRIV_BIT | PSTATE_PEF_BIT, %pstate |
681 | wrpr %g0, PSTATE_PRIV_BIT | PSTATE_PEF_BIT, %pstate |
654 | 682 | ||
655 | /* g1 -> l1, ..., g7 -> l7 */ |
683 | /* g1 -> l1, ..., g7 -> l7 */ |
656 | SAVE_GLOBALS |
684 | SAVE_GLOBALS |
657 | 685 | ||
658 | .if NOT(\is_syscall) |
686 | .if NOT(\is_syscall) |
659 | /* call higher-level service routine, pass istate as its 2nd parameter */ |
687 | /* call higher-level service routine, pass istate as its 2nd parameter */ |
660 | call %l0 |
688 | call %l0 |
661 | add %sp, PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC, %o1 |
689 | add %sp, PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC, %o1 |
662 | .else |
690 | .else |
663 | /* Call the higher-level syscall handler. */ |
691 | /* Call the higher-level syscall handler. */ |
664 | !wrpr %g0, PSTATE_PRIV_BIT | PSTATE_PEF_BIT | PSTATE_IE_BIT, %pstate |
692 | !wrpr %g0, PSTATE_PRIV_BIT | PSTATE_PEF_BIT | PSTATE_IE_BIT, %pstate |
665 | call syscall_handler |
693 | call syscall_handler |
666 | nop |
694 | nop |
667 | /* copy the value returned by the syscall */ |
695 | /* copy the value returned by the syscall */ |
668 | mov %o0, %i0 |
696 | mov %o0, %i0 |
669 | .endif |
697 | .endif |
670 | 698 | ||
671 | /* l1 -> g1, ..., l7 -> g7 */ |
699 | /* l1 -> g1, ..., l7 -> g7 */ |
672 | RESTORE_GLOBALS |
700 | RESTORE_GLOBALS |
673 | 701 | ||
674 | /* we must prserve the PEF bit */ |
702 | /* we must prserve the PEF bit */ |
675 | rdpr %pstate, %l1 |
703 | rdpr %pstate, %l1 |
676 | 704 | ||
677 | /* TL := 1, GL := 1 */ |
705 | /* TL := 1, GL := 1 */ |
678 | wrpr %g0, PSTATE_PRIV_BIT, %pstate |
706 | wrpr %g0, PSTATE_PRIV_BIT, %pstate |
679 | wrpr %g0, 1, %tl |
707 | wrpr %g0, 1, %tl |
680 | wrpr %g0, 1, %gl |
708 | wrpr %g0, 1, %gl |
681 | 709 | ||
682 | /* Read TSTATE, TPC and TNPC from saved copy. */ |
710 | /* Read TSTATE, TPC and TNPC from saved copy. */ |
683 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TSTATE], %g1 |
711 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TSTATE], %g1 |
684 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TPC], %g2 |
712 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TPC], %g2 |
685 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC], %g3 |
713 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_TNPC], %g3 |
686 | 714 | ||
687 | /* Copy PSTATE.PEF to the in-register copy of TSTATE. */ |
715 | /* Copy PSTATE.PEF to the in-register copy of TSTATE. */ |
688 | and %l1, PSTATE_PEF_BIT, %l1 |
716 | and %l1, PSTATE_PEF_BIT, %l1 |
689 | sllx %l1, TSTATE_PSTATE_SHIFT, %l1 |
717 | sllx %l1, TSTATE_PSTATE_SHIFT, %l1 |
690 | sethi %hi(TSTATE_PEF_BIT), %g4 ! reset the PEF bit to 0 ... |
718 | sethi %hi(TSTATE_PEF_BIT), %g4 ! reset the PEF bit to 0 ... |
691 | andn %g1, %g4, %g1 |
719 | andn %g1, %g4, %g1 |
692 | or %g1, %l1, %g1 ! ... "or" it with saved PEF |
720 | or %g1, %l1, %g1 ! ... "or" it with saved PEF |
693 | 721 | ||
694 | /* Restore TSTATE, TPC and TNPC from saved copies. */ |
722 | /* Restore TSTATE, TPC and TNPC from saved copies. */ |
695 | wrpr %g1, 0, %tstate |
723 | wrpr %g1, 0, %tstate |
696 | wrpr %g2, 0, %tpc |
724 | wrpr %g2, 0, %tpc |
697 | wrpr %g3, 0, %tnpc |
725 | wrpr %g3, 0, %tnpc |
698 | 726 | ||
699 | /* Restore Y. */ |
727 | /* Restore Y. */ |
700 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_Y], %g4 |
728 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_Y], %g4 |
701 | wr %g4, %y |
729 | wr %g4, %y |
702 | 730 | ||
703 | /* If TSTATE.CWP + 1 == CWP, then we do not have to fix CWP. */ |
731 | /* If TSTATE.CWP + 1 == CWP, then we do not have to fix CWP. */ |
704 | and %g1, TSTATE_CWP_MASK, %l0 |
732 | and %g1, TSTATE_CWP_MASK, %l0 |
705 | inc %l0 |
733 | inc %l0 |
706 | and %l0, NWINDOWS - 1, %l0 ! %l0 mod NWINDOWS |
734 | and %l0, NWINDOWS - 1, %l0 ! %l0 mod NWINDOWS |
707 | rdpr %cwp, %l1 |
735 | rdpr %cwp, %l1 |
708 | cmp %l0, %l1 |
736 | cmp %l0, %l1 |
709 | bz 4f ! CWP is ok |
737 | bz 4f ! CWP is ok |
710 | nop |
738 | nop |
711 | 739 | ||
712 | 3: |
740 | 3: |
713 | /* |
741 | /* |
714 | * Fix CWP. |
742 | * Fix CWP. |
715 | * In order to recapitulate, the input registers in the current |
743 | * In order to recapitulate, the input registers in the current |
716 | * window are the output registers of the window to which we want |
744 | * window are the output registers of the window to which we want |
717 | * to restore. Because the fill trap fills only input and local |
745 | * to restore. Because the fill trap fills only input and local |
718 | * registers of a window, we need to preserve those output |
746 | * registers of a window, we need to preserve those output |
719 | * registers manually. |
747 | * registers manually. |
720 | */ |
748 | */ |
721 | mov %sp, %g2 |
749 | mov %sp, %g2 |
722 | stx %i0, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I0] |
750 | stx %i0, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I0] |
723 | stx %i1, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I1] |
751 | stx %i1, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I1] |
724 | stx %i2, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I2] |
752 | stx %i2, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I2] |
725 | stx %i3, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I3] |
753 | stx %i3, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I3] |
726 | stx %i4, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I4] |
754 | stx %i4, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I4] |
727 | stx %i5, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I5] |
755 | stx %i5, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I5] |
728 | stx %i6, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I6] |
756 | stx %i6, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I6] |
729 | stx %i7, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I7] |
757 | stx %i7, [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I7] |
730 | wrpr %l0, 0, %cwp |
758 | wrpr %l0, 0, %cwp |
731 | mov %g2, %sp |
759 | mov %g2, %sp |
732 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I0], %i0 |
760 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I0], %i0 |
733 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I1], %i1 |
761 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I1], %i1 |
734 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I2], %i2 |
762 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I2], %i2 |
735 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I3], %i3 |
763 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I3], %i3 |
736 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I4], %i4 |
764 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I4], %i4 |
737 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I5], %i5 |
765 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I5], %i5 |
738 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I6], %i6 |
766 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I6], %i6 |
739 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I7], %i7 |
767 | ldx [%sp + PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE + STACK_BIAS + SAVED_I7], %i7 |
740 | .endm |
768 | .endm |
741 | 769 | ||
742 | /* |
770 | /* |
743 | * Preemptible trap handler for handling traps from kernel. |
771 | * Preemptible trap handler for handling traps from kernel. |
744 | */ |
772 | */ |
745 | .macro PREEMPTIBLE_HANDLER_KERNEL |
773 | .macro PREEMPTIBLE_HANDLER_KERNEL |
746 | 774 | ||
747 | /* |
775 | /* |
748 | * ASSERT(%tl == 1) |
776 | * ASSERT(%tl == 1) |
749 | */ |
777 | */ |
750 | rdpr %tl, %g3 |
778 | rdpr %tl, %g3 |
751 | cmp %g3, 1 |
779 | cmp %g3, 1 |
752 | be 1f |
780 | be 1f |
753 | nop |
781 | nop |
754 | 0: ba 0b ! this is for debugging, if we ever get here |
782 | 0: ba 0b ! this is for debugging, if we ever get here |
755 | nop ! it will be easy to find |
783 | nop ! it will be easy to find |
756 | 784 | ||
757 | 1: |
785 | 1: |
758 | /* prevent unnecessary CLEANWIN exceptions */ |
786 | /* prevent unnecessary CLEANWIN exceptions */ |
759 | wrpr %g0, NWINDOWS - 1, %cleanwin |
787 | wrpr %g0, NWINDOWS - 1, %cleanwin |
760 | 788 | ||
761 | /* |
789 | /* |
762 | * Prevent SAVE instruction from causing a spill exception. If the |
790 | * Prevent SAVE instruction from causing a spill exception. If the |
763 | * CANSAVE register is zero, explicitly spill register window |
791 | * CANSAVE register is zero, explicitly spill register window |
764 | * at CWP + 2. |
792 | * at CWP + 2. |
765 | */ |
793 | */ |
766 | 794 | ||
767 | rdpr %cansave, %g3 |
795 | rdpr %cansave, %g3 |
768 | brnz %g3, 2f |
796 | brnz %g3, 2f |
769 | nop |
797 | nop |
770 | INLINE_SPILL %g3, %g4 |
798 | INLINE_SPILL %g3, %g4 |
771 | 799 | ||
772 | 2: |
800 | 2: |
773 | /* ask for new register window */ |
801 | /* ask for new register window */ |
774 | save %sp, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
802 | save %sp, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
775 | 803 | ||
776 | MIDDLE_PART 0 |
804 | MIDDLE_PART 0 |
777 | 805 | ||
778 | 4: |
806 | 4: |
779 | /* |
807 | /* |
780 | * Prevent RESTORE instruction from causing a fill exception. If the |
808 | * Prevent RESTORE instruction from causing a fill exception. If the |
781 | * CANRESTORE register is zero, explicitly fill register window |
809 | * CANRESTORE register is zero, explicitly fill register window |
782 | * at CWP - 1. |
810 | * at CWP - 1. |
783 | */ |
811 | */ |
784 | rdpr %canrestore, %g1 |
812 | rdpr %canrestore, %g1 |
785 | brnz %g1, 5f |
813 | brnz %g1, 5f |
786 | nop |
814 | nop |
787 | INLINE_FILL %g3, %g4 |
815 | INLINE_FILL %g3, %g4 |
788 | 816 | ||
789 | 5: |
817 | 5: |
790 | restore |
818 | restore |
791 | 819 | ||
792 | retry |
820 | retry |
793 | .endm |
821 | .endm |
794 | 822 | ||
795 | /* |
823 | /* |
796 | * Spills the window at CWP + 2 to the userspace window buffer. This macro |
824 | * Spills the window at CWP + 2 to the userspace window buffer. This macro |
797 | * is to be used before doing SAVE when the spill trap is undesirable. |
825 | * is to be used before doing SAVE when the spill trap is undesirable. |
798 | * |
826 | * |
799 | * Parameters: |
827 | * Parameters: |
800 | * tmpreg1 global register to be used for scratching purposes |
828 | * tmpreg1 global register to be used for scratching purposes |
801 | * tmpreg2 global register to be used for scratching purposes |
829 | * tmpreg2 global register to be used for scratching purposes |
802 | * tmpreg3 global register to be used for scratching purposes |
830 | * tmpreg3 global register to be used for scratching purposes |
803 | */ |
831 | */ |
804 | .macro INLINE_SPILL_TO_WBUF tmpreg1, tmpreg2, tmpreg3 |
832 | .macro INLINE_SPILL_TO_WBUF tmpreg1, tmpreg2, tmpreg3 |
805 | ! CWP := CWP + 2 |
833 | ! CWP := CWP + 2 |
806 | rdpr %cwp, \tmpreg2 |
834 | rdpr %cwp, \tmpreg2 |
807 | add \tmpreg2, 2, \tmpreg1 |
835 | add \tmpreg2, 2, \tmpreg1 |
808 | and \tmpreg1, NWINDOWS - 1, \tmpreg1 ! modulo NWINDOWS |
836 | and \tmpreg1, NWINDOWS - 1, \tmpreg1 ! modulo NWINDOWS |
809 | wrpr \tmpreg1, %cwp |
837 | wrpr \tmpreg1, %cwp |
810 | 838 | ||
811 | ! spill to userspace window buffer |
839 | ! spill to userspace window buffer |
812 | SAVE_TO_USPACE_WBUF \tmpreg3, \tmpreg1 |
840 | SAVE_TO_USPACE_WBUF \tmpreg3, \tmpreg1 |
813 | 841 | ||
814 | ! CWP := CWP - 2 |
842 | ! CWP := CWP - 2 |
815 | wrpr \tmpreg2, %cwp |
843 | wrpr \tmpreg2, %cwp |
816 | 844 | ||
817 | saved |
845 | saved |
818 | .endm |
846 | .endm |
819 | 847 | ||
820 | /* |
848 | /* |
821 | * Preemptible handler for handling traps from userspace. |
849 | * Preemptible handler for handling traps from userspace. |
822 | */ |
850 | */ |
823 | .macro PREEMPTIBLE_HANDLER_USPACE is_syscall |
851 | .macro PREEMPTIBLE_HANDLER_USPACE is_syscall |
824 | /* |
852 | /* |
825 | * One of the ways this handler can be invoked is after a nested MMU trap from |
853 | * One of the ways this handler can be invoked is after a nested MMU trap from |
826 | * either spill_1_normal or fill_1_normal traps. Both of these traps manipulate |
854 | * either spill_1_normal or fill_1_normal traps. Both of these traps manipulate |
827 | * the CWP register. We deal with the situation by simulating the MMU trap |
855 | * the CWP register. We deal with the situation by simulating the MMU trap |
828 | * on TL=1 and restart the respective SAVE or RESTORE instruction once the MMU |
856 | * on TL=1 and restart the respective SAVE or RESTORE instruction once the MMU |
829 | * trap is resolved. However, because we are in the wrong window from the |
857 | * trap is resolved. However, because we are in the wrong window from the |
830 | * perspective of the MMU trap, we need to synchronize CWP with CWP from TL=0. |
858 | * perspective of the MMU trap, we need to synchronize CWP with CWP from TL=0. |
831 | */ |
859 | */ |
832 | .if NOT(\is_syscall) |
860 | .if NOT(\is_syscall) |
833 | rdpr %tstate, %g3 |
861 | rdpr %tstate, %g3 |
834 | and %g3, TSTATE_CWP_MASK, %g4 |
862 | and %g3, TSTATE_CWP_MASK, %g4 |
835 | wrpr %g4, 0, %cwp ! resynchronize CWP |
863 | wrpr %g4, 0, %cwp ! resynchronize CWP |
836 | .endif |
864 | .endif |
837 | 865 | ||
838 | /* prevent unnecessary CLEANWIN exceptions */ |
866 | /* prevent unnecessary CLEANWIN exceptions */ |
839 | wrpr %g0, NWINDOWS - 1, %cleanwin |
867 | wrpr %g0, NWINDOWS - 1, %cleanwin |
840 | 868 | ||
841 | /* |
869 | /* |
842 | * Prevent SAVE instruction from causing a spill exception. If the |
870 | * Prevent SAVE instruction from causing a spill exception. If the |
843 | * CANSAVE register is zero, explicitly spill register window |
871 | * CANSAVE register is zero, explicitly spill register window |
844 | * at CWP + 2. |
872 | * at CWP + 2. |
845 | */ |
873 | */ |
846 | rdpr %cansave, %g3 |
874 | rdpr %cansave, %g3 |
847 | brnz %g3, 2f |
875 | brnz %g3, 2f |
848 | nop |
876 | nop |
849 | INLINE_SPILL_TO_WBUF %g3, %g4, %g7 |
877 | INLINE_SPILL_TO_WBUF %g3, %g4, %g7 |
850 | 878 | ||
851 | 2: |
879 | 2: |
852 | set SCRATCHPAD_KSTACK, %g4 |
880 | set SCRATCHPAD_KSTACK, %g4 |
853 | ldxa [%g4] ASI_SCRATCHPAD, %g6 |
881 | ldxa [%g4] ASI_SCRATCHPAD, %g6 |
854 | save %g6, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
882 | save %g6, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
855 | 883 | ||
856 | .if \is_syscall |
884 | .if \is_syscall |
857 | /* Copy arguments for the syscall to the new window. */ |
885 | /* Copy arguments for the syscall to the new window. */ |
858 | mov %i0, %o0 |
886 | mov %i0, %o0 |
859 | mov %i1, %o1 |
887 | mov %i1, %o1 |
860 | mov %i2, %o2 |
888 | mov %i2, %o2 |
861 | mov %i3, %o3 |
889 | mov %i3, %o3 |
862 | mov %i4, %o4 |
890 | mov %i4, %o4 |
863 | mov %i5, %o5 |
891 | mov %i5, %o5 |
864 | .endif |
892 | .endif |
865 | 893 | ||
866 | mov VA_PRIMARY_CONTEXT_REG, %l0 |
894 | mov VA_PRIMARY_CONTEXT_REG, %l0 |
867 | stxa %g0, [%l0] ASI_PRIMARY_CONTEXT_REG |
895 | stxa %g0, [%l0] ASI_PRIMARY_CONTEXT_REG |
868 | rd %pc, %l0 |
896 | rd %pc, %l0 |
869 | flush %l0 |
897 | flush %l0 |
870 | 898 | ||
871 | /* Mark the CANRESTORE windows as OTHER windows. */ |
899 | /* Mark the CANRESTORE windows as OTHER windows. */ |
872 | rdpr %canrestore, %l0 |
900 | rdpr %canrestore, %l0 |
873 | wrpr %l0, %otherwin |
901 | wrpr %l0, %otherwin |
874 | wrpr %g0, %canrestore |
902 | wrpr %g0, %canrestore |
875 | 903 | ||
876 | /* |
904 | /* |
877 | * Other window spills will go to the userspace window buffer |
905 | * Other window spills will go to the userspace window buffer |
878 | * and normal spills will go to the kernel stack. |
906 | * and normal spills will go to the kernel stack. |
879 | */ |
907 | */ |
880 | wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(0), %wstate |
908 | wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(0), %wstate |
881 | 909 | ||
882 | MIDDLE_PART \is_syscall |
910 | MIDDLE_PART \is_syscall |
883 | 911 | ||
884 | 4: |
912 | 4: |
885 | /* |
913 | /* |
886 | * Spills and fills will be processed by the {spill,fill}_1_normal |
914 | * Spills and fills will be processed by the {spill,fill}_1_normal |
887 | * handlers. |
915 | * handlers. |
888 | */ |
916 | */ |
889 | wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(1), %wstate |
917 | wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(1), %wstate |
890 | 918 | ||
891 | /* |
919 | /* |
892 | * Set primary context according to secondary context. |
920 | * Set primary context according to secondary context. |
893 | */ |
921 | */ |
894 | wr %g0, ASI_SECONDARY_CONTEXT_REG, %asi |
922 | wr %g0, ASI_SECONDARY_CONTEXT_REG, %asi |
895 | ldxa [VA_SECONDARY_CONTEXT_REG] %asi, %g1 |
923 | ldxa [VA_SECONDARY_CONTEXT_REG] %asi, %g1 |
896 | wr %g0, ASI_PRIMARY_CONTEXT_REG, %asi |
924 | wr %g0, ASI_PRIMARY_CONTEXT_REG, %asi |
897 | stxa %g1, [VA_PRIMARY_CONTEXT_REG] %asi |
925 | stxa %g1, [VA_PRIMARY_CONTEXT_REG] %asi |
898 | rd %pc, %g1 |
926 | rd %pc, %g1 |
899 | flush %g1 |
927 | flush %g1 |
900 | 928 | ||
901 | /* Restoring userspace windows: */ |
929 | /* Restoring userspace windows: */ |
902 | 930 | ||
903 | /* Save address of the userspace window buffer to the %g7 register. */ |
931 | /* Save address of the userspace window buffer to the %g7 register. */ |
904 | set SCRATCHPAD_WBUF, %g5 |
932 | set SCRATCHPAD_WBUF, %g5 |
905 | ldxa [%g5] ASI_SCRATCHPAD, %g7 |
933 | ldxa [%g5] ASI_SCRATCHPAD, %g7 |
906 | 934 | ||
907 | rdpr %cwp, %g1 |
935 | rdpr %cwp, %g1 |
908 | rdpr %otherwin, %g2 |
936 | rdpr %otherwin, %g2 |
909 | 937 | ||
910 | /* |
938 | /* |
911 | * Skip all OTHERWIN windows and descend to the first window |
939 | * Skip all OTHERWIN windows and descend to the first window |
912 | * in the userspace window buffer. |
940 | * in the userspace window buffer. |
913 | */ |
941 | */ |
914 | sub %g1, %g2, %g3 |
942 | sub %g1, %g2, %g3 |
915 | dec %g3 |
943 | dec %g3 |
916 | and %g3, NWINDOWS - 1, %g3 |
944 | and %g3, NWINDOWS - 1, %g3 |
917 | wrpr %g3, 0, %cwp |
945 | wrpr %g3, 0, %cwp |
918 | 946 | ||
919 | /* |
947 | /* |
920 | * CWP is now in the window last saved in the userspace window buffer. |
948 | * CWP is now in the window last saved in the userspace window buffer. |
921 | * Fill all windows stored in the buffer. |
949 | * Fill all windows stored in the buffer. |
922 | */ |
950 | */ |
923 | clr %g4 |
951 | clr %g4 |
924 | 5: andcc %g7, UWB_ALIGNMENT - 1, %g0 ! alignment check |
952 | 5: andcc %g7, UWB_ALIGNMENT - 1, %g0 ! alignment check |
925 | bz 6f ! %g7 is UWB_ALIGNMENT-aligned, no more windows to refill |
953 | bz 6f ! %g7 is UWB_ALIGNMENT-aligned, no more windows to refill |
926 | nop |
954 | nop |
927 | 955 | ||
928 | add %g7, -STACK_WINDOW_SAVE_AREA_SIZE, %g7 |
956 | add %g7, -STACK_WINDOW_SAVE_AREA_SIZE, %g7 |
929 | ldx [%g7 + L0_OFFSET], %l0 |
957 | ldx [%g7 + L0_OFFSET], %l0 |
930 | ldx [%g7 + L1_OFFSET], %l1 |
958 | ldx [%g7 + L1_OFFSET], %l1 |
931 | ldx [%g7 + L2_OFFSET], %l2 |
959 | ldx [%g7 + L2_OFFSET], %l2 |
932 | ldx [%g7 + L3_OFFSET], %l3 |
960 | ldx [%g7 + L3_OFFSET], %l3 |
933 | ldx [%g7 + L4_OFFSET], %l4 |
961 | ldx [%g7 + L4_OFFSET], %l4 |
934 | ldx [%g7 + L5_OFFSET], %l5 |
962 | ldx [%g7 + L5_OFFSET], %l5 |
935 | ldx [%g7 + L6_OFFSET], %l6 |
963 | ldx [%g7 + L6_OFFSET], %l6 |
936 | ldx [%g7 + L7_OFFSET], %l7 |
964 | ldx [%g7 + L7_OFFSET], %l7 |
937 | ldx [%g7 + I0_OFFSET], %i0 |
965 | ldx [%g7 + I0_OFFSET], %i0 |
938 | ldx [%g7 + I1_OFFSET], %i1 |
966 | ldx [%g7 + I1_OFFSET], %i1 |
939 | ldx [%g7 + I2_OFFSET], %i2 |
967 | ldx [%g7 + I2_OFFSET], %i2 |
940 | ldx [%g7 + I3_OFFSET], %i3 |
968 | ldx [%g7 + I3_OFFSET], %i3 |
941 | ldx [%g7 + I4_OFFSET], %i4 |
969 | ldx [%g7 + I4_OFFSET], %i4 |
942 | ldx [%g7 + I5_OFFSET], %i5 |
970 | ldx [%g7 + I5_OFFSET], %i5 |
943 | ldx [%g7 + I6_OFFSET], %i6 |
971 | ldx [%g7 + I6_OFFSET], %i6 |
944 | ldx [%g7 + I7_OFFSET], %i7 |
972 | ldx [%g7 + I7_OFFSET], %i7 |
945 | 973 | ||
946 | dec %g3 |
974 | dec %g3 |
947 | and %g3, NWINDOWS - 1, %g3 |
975 | and %g3, NWINDOWS - 1, %g3 |
948 | wrpr %g3, 0, %cwp ! switch to the preceeding window |
976 | wrpr %g3, 0, %cwp ! switch to the preceeding window |
949 | 977 | ||
950 | ba 5b |
978 | ba 5b |
951 | inc %g4 |
979 | inc %g4 |
952 | 980 | ||
953 | 6: |
981 | 6: |
954 | /* Save changes of the address of the userspace window buffer. */ |
982 | /* Save changes of the address of the userspace window buffer. */ |
955 | stxa %g7, [%g5] ASI_SCRATCHPAD |
983 | stxa %g7, [%g5] ASI_SCRATCHPAD |
956 | 984 | ||
957 | /* |
985 | /* |
958 | * Switch back to the proper current window and adjust |
986 | * Switch back to the proper current window and adjust |
959 | * OTHERWIN, CANRESTORE, CANSAVE and CLEANWIN. |
987 | * OTHERWIN, CANRESTORE, CANSAVE and CLEANWIN. |
960 | */ |
988 | */ |
961 | wrpr %g1, 0, %cwp |
989 | wrpr %g1, 0, %cwp |
962 | add %g4, %g2, %g2 |
990 | add %g4, %g2, %g2 |
963 | cmp %g2, NWINDOWS - 2 |
991 | cmp %g2, NWINDOWS - 2 |
964 | bg 8f ! fix the CANRESTORE=NWINDOWS-1 anomaly |
992 | bg 8f ! fix the CANRESTORE=NWINDOWS-1 anomaly |
965 | mov NWINDOWS - 2, %g1 ! use dealy slot for both cases |
993 | mov NWINDOWS - 2, %g1 ! use dealy slot for both cases |
966 | sub %g1, %g2, %g1 |
994 | sub %g1, %g2, %g1 |
967 | 995 | ||
968 | wrpr %g0, 0, %otherwin |
996 | wrpr %g0, 0, %otherwin |
969 | wrpr %g1, 0, %cansave ! NWINDOWS - 2 - CANRESTORE |
997 | wrpr %g1, 0, %cansave ! NWINDOWS - 2 - CANRESTORE |
970 | wrpr %g2, 0, %canrestore ! OTHERWIN + windows in the buffer |
998 | wrpr %g2, 0, %canrestore ! OTHERWIN + windows in the buffer |
971 | wrpr %g2, 0, %cleanwin ! avoid information leak |
999 | wrpr %g2, 0, %cleanwin ! avoid information leak |
972 | 1000 | ||
973 | 7: |
1001 | 7: |
974 | restore |
1002 | restore |
975 | 1003 | ||
976 | .if \is_syscall |
1004 | .if \is_syscall |
977 | done |
1005 | done |
978 | .else |
1006 | .else |
979 | retry |
1007 | retry |
980 | .endif |
1008 | .endif |
981 | 1009 | ||
982 | 8: |
1010 | 8: |
983 | /* |
1011 | /* |
984 | * We got here in order to avoid inconsistency of the window state registers. |
1012 | * We got here in order to avoid inconsistency of the window state registers. |
985 | * If the: |
1013 | * If the: |
986 | * |
1014 | * |
987 | * save %g6, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
1015 | * save %g6, -PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE, %sp |
988 | * |
1016 | * |
989 | * instruction trapped and spilled a register window into the userspace |
1017 | * instruction trapped and spilled a register window into the userspace |
990 | * window buffer, we have just restored NWINDOWS - 1 register windows. |
1018 | * window buffer, we have just restored NWINDOWS - 1 register windows. |
991 | * However, CANRESTORE can be only NWINDOW - 2 at most. |
1019 | * However, CANRESTORE can be only NWINDOW - 2 at most. |
992 | * |
1020 | * |
993 | * The solution is to manually switch to (CWP - 1) mod NWINDOWS |
1021 | * The solution is to manually switch to (CWP - 1) mod NWINDOWS |
994 | * and set the window state registers so that: |
1022 | * and set the window state registers so that: |
995 | * |
1023 | * |
996 | * CANRESTORE = NWINDOWS - 2 |
1024 | * CANRESTORE = NWINDOWS - 2 |
997 | * CLEANWIN = NWINDOWS - 2 |
1025 | * CLEANWIN = NWINDOWS - 2 |
998 | * CANSAVE = 0 |
1026 | * CANSAVE = 0 |
999 | * OTHERWIN = 0 |
1027 | * OTHERWIN = 0 |
1000 | * |
1028 | * |
1001 | * The RESTORE instruction is therfore to be skipped. |
1029 | * The RESTORE instruction is therfore to be skipped. |
1002 | */ |
1030 | */ |
1003 | wrpr %g0, 0, %otherwin |
1031 | wrpr %g0, 0, %otherwin |
1004 | wrpr %g0, 0, %cansave |
1032 | wrpr %g0, 0, %cansave |
1005 | wrpr %g1, 0, %canrestore |
1033 | wrpr %g1, 0, %canrestore |
1006 | wrpr %g1, 0, %cleanwin |
1034 | wrpr %g1, 0, %cleanwin |
1007 | 1035 | ||
1008 | rdpr %cwp, %g1 |
1036 | rdpr %cwp, %g1 |
1009 | dec %g1 |
1037 | dec %g1 |
1010 | and %g1, NWINDOWS - 1, %g1 |
1038 | and %g1, NWINDOWS - 1, %g1 |
1011 | wrpr %g1, 0, %cwp ! CWP-- |
1039 | wrpr %g1, 0, %cwp ! CWP-- |
1012 | 1040 | ||
1013 | .if \is_syscall |
1041 | .if \is_syscall |
1014 | done |
1042 | done |
1015 | .else |
1043 | .else |
1016 | retry |
1044 | retry |
1017 | .endif |
1045 | .endif |
1018 | 1046 | ||
1019 | .endm |
1047 | .endm |
1020 | 1048 | ||
1021 | /* Preemptible trap handler for TL=1. |
1049 | /* Preemptible trap handler for TL=1. |
1022 | * |
1050 | * |
1023 | * This trap handler makes arrangements to make calling of scheduler() from |
1051 | * This trap handler makes arrangements to make calling of scheduler() from |
1024 | * within a trap context possible. It is called from several other trap |
1052 | * within a trap context possible. It is called from several other trap |
1025 | * handlers. |
1053 | * handlers. |
1026 | */ |
1054 | */ |
1027 | .macro PREEMPTIBLE_HANDLER_TEMPLATE is_syscall |
1055 | .macro PREEMPTIBLE_HANDLER_TEMPLATE is_syscall |
1028 | rdpr %tstate, %g3 |
1056 | rdpr %tstate, %g3 |
1029 | and %g3, TSTATE_PRIV_BIT, %g3 |
1057 | and %g3, TSTATE_PRIV_BIT, %g3 |
1030 | brz %g3, 100f ! trapping from userspace |
1058 | brz %g3, 100f ! trapping from userspace |
1031 | nop |
1059 | nop |
1032 | 1060 | ||
1033 | PREEMPTIBLE_HANDLER_KERNEL |
1061 | PREEMPTIBLE_HANDLER_KERNEL |
1034 | ba 101f |
1062 | ba 101f |
1035 | nop |
1063 | nop |
1036 | 1064 | ||
1037 | 100: |
1065 | 100: |
1038 | PREEMPTIBLE_HANDLER_USPACE \is_syscall |
1066 | PREEMPTIBLE_HANDLER_USPACE \is_syscall |
1039 | 1067 | ||
1040 | 101: |
1068 | 101: |
1041 | .endm |
1069 | .endm |
1042 | 1070 | ||
1043 | .global preemptible_handler |
1071 | .global preemptible_handler |
1044 | preemptible_handler: |
1072 | preemptible_handler: |
1045 | PREEMPTIBLE_HANDLER_TEMPLATE 0 |
1073 | PREEMPTIBLE_HANDLER_TEMPLATE 0 |
1046 | 1074 | ||
1047 | .global trap_instruction_handler |
1075 | .global trap_instruction_handler |
1048 | trap_instruction_handler: |
1076 | trap_instruction_handler: |
1049 | PREEMPTIBLE_HANDLER_TEMPLATE 1 |
1077 | PREEMPTIBLE_HANDLER_TEMPLATE 1 |
1050 | 1078 |