Rev 1609 | Rev 1726 | Go to most recent revision | Only display areas with differences | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 1609 | Rev 1716 | ||
---|---|---|---|
1 | # |
1 | # |
2 | # Copyright (C) 2006 Martin Decky |
2 | # Copyright (C) 2006 Martin Decky |
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 | #include <arch/asm/regname.h> |
29 | #include <arch/asm/regname.h> |
30 | #include <arch/mm/page.h> |
30 | #include <arch/mm/page.h> |
31 | 31 | ||
32 | .section K_UNMAPPED_TEXT_START, "ax" |
32 | .section K_UNMAPPED_TEXT_START, "ax" |
33 | 33 | ||
34 | .macro CONTEXT_STORE |
34 | .macro CONTEXT_STORE |
35 | 35 | ||
36 | # save R12 in SPRG1, backup CR in R12 |
36 | # save R12 in SPRG1, backup CR in R12 |
37 | # save SP in SPRG2 |
37 | # save SP in SPRG2 |
38 | 38 | ||
39 | mtsprg1 r12 |
39 | mtsprg1 r12 |
40 | mfcr r12 |
40 | mfcr r12 |
41 | mtsprg2 sp |
41 | mtsprg2 sp |
42 | 42 | ||
43 | # check whether SP is in kernel |
43 | # check whether SP is in kernel |
44 | 44 | ||
45 | andis. sp, sp, 0x8000 |
45 | andis. sp, sp, 0x8000 |
46 | bne 1f |
46 | bne 1f |
47 | 47 | ||
48 | # stack is in user-space |
48 | # stack is in user-space |
49 | 49 | ||
50 | mfsprg0 sp |
50 | mfsprg0 sp |
51 | 51 | ||
52 | b 2f |
52 | b 2f |
53 | 53 | ||
54 | 1: |
54 | 1: |
55 | 55 | ||
56 | # stack is in kernel |
56 | # stack is in kernel |
57 | 57 | ||
58 | mfsprg2 sp |
58 | mfsprg2 sp |
59 | subis sp, sp, 0x8000 |
59 | subis sp, sp, 0x8000 |
60 | 60 | ||
61 | 2: |
61 | 2: |
62 | 62 | ||
63 | subi sp, sp, 160 |
63 | subi sp, sp, 160 |
64 | stw r0, 8(sp) |
64 | stw r0, 8(sp) |
65 | stw r2, 12(sp) |
65 | stw r2, 12(sp) |
66 | stw r3, 16(sp) |
66 | stw r3, 16(sp) |
67 | stw r4, 20(sp) |
67 | stw r4, 20(sp) |
68 | stw r5, 24(sp) |
68 | stw r5, 24(sp) |
69 | stw r6, 28(sp) |
69 | stw r6, 28(sp) |
70 | stw r7, 32(sp) |
70 | stw r7, 32(sp) |
71 | stw r8, 36(sp) |
71 | stw r8, 36(sp) |
72 | stw r9, 40(sp) |
72 | stw r9, 40(sp) |
73 | stw r10, 44(sp) |
73 | stw r10, 44(sp) |
74 | stw r11, 48(sp) |
74 | stw r11, 48(sp) |
75 | stw r13, 52(sp) |
75 | stw r13, 52(sp) |
76 | stw r14, 56(sp) |
76 | stw r14, 56(sp) |
77 | stw r15, 60(sp) |
77 | stw r15, 60(sp) |
78 | stw r16, 64(sp) |
78 | stw r16, 64(sp) |
79 | stw r17, 68(sp) |
79 | stw r17, 68(sp) |
80 | stw r18, 72(sp) |
80 | stw r18, 72(sp) |
81 | stw r19, 76(sp) |
81 | stw r19, 76(sp) |
82 | stw r20, 80(sp) |
82 | stw r20, 80(sp) |
83 | stw r21, 84(sp) |
83 | stw r21, 84(sp) |
84 | stw r22, 88(sp) |
84 | stw r22, 88(sp) |
85 | stw r23, 92(sp) |
85 | stw r23, 92(sp) |
86 | stw r24, 96(sp) |
86 | stw r24, 96(sp) |
87 | stw r25, 100(sp) |
87 | stw r25, 100(sp) |
88 | stw r26, 104(sp) |
88 | stw r26, 104(sp) |
89 | stw r27, 108(sp) |
89 | stw r27, 108(sp) |
90 | stw r28, 112(sp) |
90 | stw r28, 112(sp) |
91 | stw r29, 116(sp) |
91 | stw r29, 116(sp) |
92 | stw r30, 120(sp) |
92 | stw r30, 120(sp) |
93 | stw r31, 124(sp) |
93 | stw r31, 124(sp) |
94 | 94 | ||
95 | stw r12, 128(sp) |
95 | stw r12, 128(sp) |
96 | 96 | ||
97 | mfsrr0 r12 |
97 | mfsrr0 r12 |
98 | stw r12, 132(sp) |
98 | stw r12, 132(sp) |
99 | 99 | ||
100 | mfsrr1 r12 |
100 | mfsrr1 r12 |
101 | stw r12, 136(sp) |
101 | stw r12, 136(sp) |
102 | 102 | ||
103 | mflr r12 |
103 | mflr r12 |
104 | stw r12, 140(sp) |
104 | stw r12, 140(sp) |
105 | 105 | ||
106 | mfctr r12 |
106 | mfctr r12 |
107 | stw r12, 144(sp) |
107 | stw r12, 144(sp) |
108 | 108 | ||
109 | mfxer r12 |
109 | mfxer r12 |
110 | stw r12, 148(sp) |
110 | stw r12, 148(sp) |
111 | 111 | ||
112 | mfsprg1 r12 |
112 | mfsprg1 r12 |
113 | stw r12, 152(sp) |
113 | stw r12, 152(sp) |
114 | 114 | ||
115 | mfsprg2 r12 |
115 | mfsprg2 r12 |
116 | stw r12, 156(sp) |
116 | stw r12, 156(sp) |
117 | .endm |
117 | .endm |
118 | 118 | ||
119 | .org 0x060 |
- | |
120 | jump_to_kernel: |
- | |
121 | lis r12, iret@ha |
- | |
122 | addi r12, r12, iret@l |
- | |
123 | mtlr r12 |
- | |
124 | - | ||
125 | mfmsr r12 |
- | |
126 | ori r12, r12, (msr_ir | msr_dr)@l |
- | |
127 | mtsrr1 r12 |
- | |
128 | - | ||
129 | addis sp, sp, 0x8000 |
- | |
130 | mr r4, sp |
- | |
131 | addi r4, r4, 8 |
- | |
132 | - | ||
133 | rfi |
- | |
134 | - | ||
135 | jump_to_kernel_syscall: |
- | |
136 | lis r12, syscall_handler@ha |
- | |
137 | addi r12, r12, syscall_handler@l |
- | |
138 | mtsrr0 r12 |
- | |
139 | - | ||
140 | lis r12, iret_syscall@ha |
- | |
141 | addi r12, r12, iret_syscall@l |
- | |
142 | mtlr r12 |
- | |
143 | - | ||
144 | mfmsr r12 |
- | |
145 | ori r12, r12, (msr_ir | msr_dr)@l |
- | |
146 | mtsrr1 r12 |
- | |
147 | - | ||
148 | addis sp, sp, 0x8000 |
- | |
149 | rfi |
- | |
150 | - | ||
151 | .org 0x100 |
119 | .org 0x100 |
152 | .global exc_system_reset |
120 | .global exc_system_reset |
153 | exc_system_reset: |
121 | exc_system_reset: |
154 | CONTEXT_STORE |
122 | CONTEXT_STORE |
155 | 123 | ||
156 | lis r12, exc_dispatch@ha |
124 | lis r12, exc_dispatch@ha |
157 | addi r12, r12, exc_dispatch@l |
125 | addi r12, r12, exc_dispatch@l |
158 | mtsrr0 r12 |
126 | mtsrr0 r12 |
159 | 127 | ||
160 | li r3, 0 |
128 | li r3, 0 |
161 | b jump_to_kernel |
129 | b jump_to_kernel |
162 | 130 | ||
163 | .org 0x200 |
131 | .org 0x200 |
164 | .global exc_machine_check |
132 | .global exc_machine_check |
165 | exc_machine_check: |
133 | exc_machine_check: |
166 | CONTEXT_STORE |
134 | CONTEXT_STORE |
167 | 135 | ||
168 | lis r12, exc_dispatch@ha |
136 | lis r12, exc_dispatch@ha |
169 | addi r12, r12, exc_dispatch@l |
137 | addi r12, r12, exc_dispatch@l |
170 | mtsrr0 r12 |
138 | mtsrr0 r12 |
171 | 139 | ||
172 | li r3, 1 |
140 | li r3, 1 |
173 | b jump_to_kernel |
141 | b jump_to_kernel |
174 | 142 | ||
175 | .org 0x300 |
143 | .org 0x300 |
176 | .global exc_data_storage |
144 | .global exc_data_storage |
177 | exc_data_storage: |
145 | exc_data_storage: |
178 | CONTEXT_STORE |
146 | CONTEXT_STORE |
179 | 147 | ||
180 | lis r12, exc_dispatch@ha |
148 | lis r12, exc_dispatch@ha |
181 | addi r12, r12, exc_dispatch@l |
149 | addi r12, r12, exc_dispatch@l |
182 | mtsrr0 r12 |
150 | mtsrr0 r12 |
183 | 151 | ||
184 | li r3, 2 |
152 | li r3, 2 |
185 | b jump_to_kernel |
153 | b jump_to_kernel |
186 | 154 | ||
187 | .org 0x400 |
155 | .org 0x400 |
188 | .global exc_instruction_storage |
156 | .global exc_instruction_storage |
189 | exc_instruction_storage: |
157 | exc_instruction_storage: |
190 | CONTEXT_STORE |
158 | CONTEXT_STORE |
191 | 159 | ||
192 | lis r12, exc_dispatch@ha |
160 | lis r12, exc_dispatch@ha |
193 | addi r12, r12, exc_dispatch@l |
161 | addi r12, r12, exc_dispatch@l |
194 | mtsrr0 r12 |
162 | mtsrr0 r12 |
195 | 163 | ||
196 | li r3, 3 |
164 | li r3, 3 |
197 | b jump_to_kernel |
165 | b jump_to_kernel |
198 | 166 | ||
199 | .org 0x500 |
167 | .org 0x500 |
200 | .global exc_external |
168 | .global exc_external |
201 | exc_external: |
169 | exc_external: |
202 | CONTEXT_STORE |
170 | CONTEXT_STORE |
203 | 171 | ||
204 | lis r12, exc_dispatch@ha |
172 | lis r12, exc_dispatch@ha |
205 | addi r12, r12, exc_dispatch@l |
173 | addi r12, r12, exc_dispatch@l |
206 | mtsrr0 r12 |
174 | mtsrr0 r12 |
207 | 175 | ||
208 | li r3, 4 |
176 | li r3, 4 |
209 | b jump_to_kernel |
177 | b jump_to_kernel |
210 | 178 | ||
211 | .org 0x600 |
179 | .org 0x600 |
212 | .global exc_alignment |
180 | .global exc_alignment |
213 | exc_alignment: |
181 | exc_alignment: |
214 | CONTEXT_STORE |
182 | CONTEXT_STORE |
215 | 183 | ||
216 | lis r12, exc_dispatch@ha |
184 | lis r12, exc_dispatch@ha |
217 | addi r12, r12, exc_dispatch@l |
185 | addi r12, r12, exc_dispatch@l |
218 | mtsrr0 r12 |
186 | mtsrr0 r12 |
219 | 187 | ||
220 | li r3, 5 |
188 | li r3, 5 |
221 | b jump_to_kernel |
189 | b jump_to_kernel |
222 | 190 | ||
223 | .org 0x700 |
191 | .org 0x700 |
224 | .global exc_program |
192 | .global exc_program |
225 | exc_program: |
193 | exc_program: |
226 | CONTEXT_STORE |
194 | CONTEXT_STORE |
227 | 195 | ||
228 | lis r12, exc_dispatch@ha |
196 | lis r12, exc_dispatch@ha |
229 | addi r12, r12, exc_dispatch@l |
197 | addi r12, r12, exc_dispatch@l |
230 | mtsrr0 r12 |
198 | mtsrr0 r12 |
231 | 199 | ||
232 | li r3, 6 |
200 | li r3, 6 |
233 | b jump_to_kernel |
201 | b jump_to_kernel |
234 | 202 | ||
235 | .org 0x800 |
203 | .org 0x800 |
236 | .global exc_fp_unavailable |
204 | .global exc_fp_unavailable |
237 | exc_fp_unavailable: |
205 | exc_fp_unavailable: |
238 | CONTEXT_STORE |
206 | CONTEXT_STORE |
239 | 207 | ||
240 | lis r12, exc_dispatch@ha |
208 | lis r12, exc_dispatch@ha |
241 | addi r12, r12, exc_dispatch@l |
209 | addi r12, r12, exc_dispatch@l |
242 | mtsrr0 r12 |
210 | mtsrr0 r12 |
243 | 211 | ||
244 | li r3, 7 |
212 | li r3, 7 |
245 | b jump_to_kernel |
213 | b jump_to_kernel |
246 | 214 | ||
247 | .org 0x900 |
215 | .org 0x900 |
248 | .global exc_decrementer |
216 | .global exc_decrementer |
249 | exc_decrementer: |
217 | exc_decrementer: |
250 | CONTEXT_STORE |
218 | CONTEXT_STORE |
251 | 219 | ||
252 | lis r12, exc_dispatch@ha |
220 | lis r12, exc_dispatch@ha |
253 | addi r12, r12, exc_dispatch@l |
221 | addi r12, r12, exc_dispatch@l |
254 | mtsrr0 r12 |
222 | mtsrr0 r12 |
255 | 223 | ||
256 | li r3, 8 |
224 | li r3, 8 |
257 | b jump_to_kernel |
225 | b jump_to_kernel |
258 | 226 | ||
259 | .org 0xa00 |
227 | .org 0xa00 |
260 | .global exc_reserved0 |
228 | .global exc_reserved0 |
261 | exc_reserved0: |
229 | exc_reserved0: |
262 | CONTEXT_STORE |
230 | CONTEXT_STORE |
263 | 231 | ||
264 | lis r12, exc_dispatch@ha |
232 | lis r12, exc_dispatch@ha |
265 | addi r12, r12, exc_dispatch@l |
233 | addi r12, r12, exc_dispatch@l |
266 | mtsrr0 r12 |
234 | mtsrr0 r12 |
267 | 235 | ||
268 | li r3, 9 |
236 | li r3, 9 |
269 | b jump_to_kernel |
237 | b jump_to_kernel |
270 | 238 | ||
271 | .org 0xb00 |
239 | .org 0xb00 |
272 | .global exc_reserved1 |
240 | .global exc_reserved1 |
273 | exc_reserved1: |
241 | exc_reserved1: |
274 | CONTEXT_STORE |
242 | CONTEXT_STORE |
275 | 243 | ||
276 | lis r12, exc_dispatch@ha |
244 | lis r12, exc_dispatch@ha |
277 | addi r12, r12, exc_dispatch@l |
245 | addi r12, r12, exc_dispatch@l |
278 | mtsrr0 r12 |
246 | mtsrr0 r12 |
279 | 247 | ||
280 | li r3, 10 |
248 | li r3, 10 |
281 | b jump_to_kernel |
249 | b jump_to_kernel |
282 | 250 | ||
283 | .org 0xc00 |
251 | .org 0xc00 |
284 | .global exc_syscall |
252 | .global exc_syscall |
285 | exc_syscall: |
253 | exc_syscall: |
286 | CONTEXT_STORE |
254 | CONTEXT_STORE |
287 | 255 | ||
288 | b jump_to_kernel_syscall |
256 | b jump_to_kernel_syscall |
289 | 257 | ||
290 | .org 0xd00 |
258 | .org 0xd00 |
291 | .global exc_trace |
259 | .global exc_trace |
292 | exc_trace: |
260 | exc_trace: |
293 | CONTEXT_STORE |
261 | CONTEXT_STORE |
294 | 262 | ||
295 | lis r12, exc_dispatch@ha |
263 | lis r12, exc_dispatch@ha |
296 | addi r12, r12, exc_dispatch@l |
264 | addi r12, r12, exc_dispatch@l |
297 | mtsrr0 r12 |
265 | mtsrr0 r12 |
298 | 266 | ||
299 | li r3, 12 |
267 | li r3, 12 |
300 | b jump_to_kernel |
268 | b jump_to_kernel |
- | 269 | ||
- | 270 | .org 0x4000 |
|
- | 271 | jump_to_kernel: |
|
- | 272 | lis r12, iret@ha |
|
- | 273 | addi r12, r12, iret@l |
|
- | 274 | mtlr r12 |
|
- | 275 | ||
- | 276 | mfmsr r12 |
|
- | 277 | ori r12, r12, (msr_ir | msr_dr)@l |
|
- | 278 | mtsrr1 r12 |
|
- | 279 | ||
- | 280 | addis sp, sp, 0x8000 |
|
- | 281 | mr r4, sp |
|
- | 282 | addi r4, r4, 8 |
|
- | 283 | ||
- | 284 | rfi |
|
- | 285 | ||
- | 286 | jump_to_kernel_syscall: |
|
- | 287 | lis r12, syscall_handler@ha |
|
- | 288 | addi r12, r12, syscall_handler@l |
|
- | 289 | mtsrr0 r12 |
|
- | 290 | ||
- | 291 | lis r12, iret_syscall@ha |
|
- | 292 | addi r12, r12, iret_syscall@l |
|
- | 293 | mtlr r12 |
|
- | 294 | ||
- | 295 | mfmsr r12 |
|
- | 296 | ori r12, r12, (msr_ir | msr_dr)@l |
|
- | 297 | mtsrr1 r12 |
|
- | 298 | ||
- | 299 | addis sp, sp, 0x8000 |
|
- | 300 | rfi |
|
301 | 301 | ||
- | 302 | ||
- | 303 |
|
|
- | 304 | ||
- | 305 | ||
- | 306 |