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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 | mtspr sprg1, sp |
- | |
36 | 35 | ||
- | 36 | # save SP in SPRG1 |
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- | 37 | # save R12 in SPRG2, backup CR in R12 |
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- | 38 | ||
- | 39 | mtsprg1 sp |
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- | 40 | mtsprg2 r12 |
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- | 41 | mfcr r12 |
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- | 42 | ||
- | 43 | # check whether SP is in kernel |
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- | 44 | ||
- | 45 | andis. sp, sp, 0x8000 |
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- | 46 | bne 1f |
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- | 47 | ||
- | 48 | # stack is in user-space |
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- | 49 | ||
- | 50 | mfsprg0 sp |
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- | 51 | ||
- | 52 | b 2f |
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- | 53 | ||
- | 54 | 1: |
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- | 55 | ||
- | 56 | # stack is in kernel |
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- | 57 | ||
- | 58 | mfsprg1 sp |
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37 | subis sp, sp, 0x8000 |
59 | subis sp, sp, 0x8000 |
38 | 60 | ||
- | 61 | 2: |
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- | 62 | ||
39 | subi sp, sp, 144 |
63 | subi sp, sp, 140 |
40 | stw r0, 0(sp) |
64 | stw r0, 0(sp) |
41 | stw r2, 4(sp) |
65 | stw r2, 4(sp) |
42 | stw r3, 8(sp) |
66 | stw r3, 8(sp) |
43 | stw r4, 12(sp) |
67 | stw r4, 12(sp) |
44 | stw r5, 16(sp) |
68 | stw r5, 16(sp) |
Line 46... | Line 70... | ||
46 | stw r7, 24(sp) |
70 | stw r7, 24(sp) |
47 | stw r8, 28(sp) |
71 | stw r8, 28(sp) |
48 | stw r9, 32(sp) |
72 | stw r9, 32(sp) |
49 | stw r10, 36(sp) |
73 | stw r10, 36(sp) |
50 | stw r11, 40(sp) |
74 | stw r11, 40(sp) |
51 | stw r12, 44(sp) |
75 | stw r13, 44(sp) |
52 | stw r13, 48(sp) |
76 | stw r14, 48(sp) |
53 | stw r14, 52(sp) |
77 | stw r15, 52(sp) |
54 | stw r15, 56(sp) |
78 | stw r16, 56(sp) |
55 | stw r16, 60(sp) |
79 | stw r17, 60(sp) |
56 | stw r17, 64(sp) |
80 | stw r18, 64(sp) |
57 | stw r18, 68(sp) |
81 | stw r19, 68(sp) |
58 | stw r19, 72(sp) |
82 | stw r20, 72(sp) |
59 | stw r20, 76(sp) |
83 | stw r21, 76(sp) |
60 | stw r21, 80(sp) |
84 | stw r22, 80(sp) |
61 | stw r22, 84(sp) |
85 | stw r23, 84(sp) |
62 | stw r23, 88(sp) |
86 | stw r24, 88(sp) |
63 | stw r24, 92(sp) |
87 | stw r25, 92(sp) |
64 | stw r25, 96(sp) |
88 | stw r26, 96(sp) |
65 | stw r26, 100(sp) |
89 | stw r27, 100(sp) |
66 | stw r27, 104(sp) |
90 | stw r28, 104(sp) |
67 | stw r28, 108(sp) |
91 | stw r29, 108(sp) |
68 | stw r29, 112(sp) |
- | |
69 | stw r30, 116(sp) |
92 | stw r30, 112(sp) |
70 | stw r31, 120(sp) |
93 | stw r31, 116(sp) |
71 | 94 | ||
72 | mfspr r3, srr0 |
95 | mfsrr0 r3 |
73 | stw r3, 124(sp) |
96 | stw r3, 120(sp) |
74 | 97 | ||
75 | mfspr r3, srr1 |
98 | mfsrr1 r3 |
76 | stw r3, 128(sp) |
99 | stw r3, 124(sp) |
77 | 100 | ||
78 | mflr r3 |
101 | mflr r3 |
79 | stw r3, 132(sp) |
102 | stw r3, 128(sp) |
80 | 103 | ||
81 | mfcr r3 |
- | |
82 | stw r3, 136(sp) |
104 | stw r12, 132(sp) |
83 | 105 | ||
84 | mfctr r3 |
106 | mfctr r3 |
85 | stw r3, 140(sp) |
107 | stw r3, 136(sp) |
86 | 108 | ||
87 | mfxer r3 |
109 | mfxer r3 |
88 | stw r3, 144(sp) |
110 | stw r3, 140(sp) |
89 | .endm |
111 | .endm |
90 | 112 | ||
91 | .org 0x100 |
113 | .org 0x100 |
92 | .global exc_system_reset |
114 | .global exc_system_reset |
93 | exc_system_reset: |
115 | exc_system_reset: |
Line 103... | Line 125... | ||
103 | exc_data_storage: |
125 | exc_data_storage: |
104 | CONTEXT_STORE |
126 | CONTEXT_STORE |
105 | 127 | ||
106 | lis r3, pht_refill@ha |
128 | lis r3, pht_refill@ha |
107 | addi r3, r3, pht_refill@l |
129 | addi r3, r3, pht_refill@l |
108 | mtspr srr0, r3 |
130 | mtsrr0 r3 |
109 | 131 | ||
110 | mfmsr r3 |
132 | mfmsr r3 |
111 | ori r3, r3, (msr_ir | msr_dr)@l |
133 | ori r3, r3, (msr_ir | msr_dr)@l |
112 | mtspr srr1, r3 |
134 | mtsrr1 r3 |
113 | 135 | ||
114 | lis r3, iret@ha |
136 | lis r3, iret@ha |
115 | addi r3, r3, iret@l |
137 | addi r3, r3, iret@l |
116 | mtlr r3 |
138 | mtlr r3 |
117 | 139 | ||
118 | addis sp, sp, 0x8000 |
140 | addis sp, sp, 0x8000 |
- | 141 | mr r3, sp |
|
119 | rfi |
142 | rfi |
120 | 143 | ||
121 | .org 0x400 |
144 | .org 0x400 |
122 | .global exc_instruction_storage |
145 | .global exc_instruction_storage |
123 | exc_instruction_storage: |
146 | exc_instruction_storage: |
- | 147 | CONTEXT_STORE |
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- | 148 | ||
- | 149 | lis r3, pht_refill@ha |
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124 | b exc_instruction_storage |
150 | addi r3, r3, pht_refill@l |
- | 151 | mtsrr0 r3 |
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125 | 152 | ||
126 | .org 0x480 |
153 | mfmsr r3 |
127 | .global exc_instruction_segment |
154 | ori r3, r3, (msr_ir | msr_dr)@l |
- | 155 | mtsrr1 r3 |
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- | 156 | ||
128 | exc_instruction_segment: |
157 | lis r3, iret@ha |
129 | b exc_instruction_segment |
158 | addi r3, r3, iret@l |
- | 159 | mtlr r3 |
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- | 160 | ||
- | 161 | addis sp, sp, 0x8000 |
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- | 162 | mr r3, sp |
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- | 163 | rfi |
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130 | 164 | ||
131 | .org 0x500 |
165 | .org 0x500 |
132 | .global exc_external |
166 | .global exc_external |
133 | exc_external: |
167 | exc_external: |
134 | b exc_external |
168 | b exc_external |
Line 153... | Line 187... | ||
153 | exc_decrementer: |
187 | exc_decrementer: |
154 | CONTEXT_STORE |
188 | CONTEXT_STORE |
155 | 189 | ||
156 | lis r3, exc_dispatch@ha |
190 | lis r3, exc_dispatch@ha |
157 | addi r3, r3, exc_dispatch@l |
191 | addi r3, r3, exc_dispatch@l |
158 | mtspr srr0, r3 |
192 | mtsrr0 r3 |
159 | 193 | ||
160 | mfmsr r3 |
194 | mfmsr r3 |
161 | ori r3, r3, (msr_ir | msr_dr)@l |
195 | ori r3, r3, (msr_ir | msr_dr)@l |
162 | mtspr srr1, r3 |
196 | mtsrr1 r3 |
163 | 197 | ||
164 | lis r3, iret@ha |
198 | lis r3, iret@ha |
165 | addi r3, r3, iret@l |
199 | addi r3, r3, iret@l |
166 | mtlr r3 |
200 | mtlr r3 |
167 | 201 | ||
168 | addis sp, sp, 0x8000 |
202 | addis sp, sp, 0x8000 |
169 | li r3, 10 |
203 | li r3, 10 |
- | 204 | mr r4, sp |
|
170 | rfi |
205 | rfi |
171 | 206 | ||
172 | .org 0xa00 |
207 | .org 0xa00 |
173 | .global exc_reserved0 |
208 | .global exc_reserved0 |
174 | exc_reserved0: |
209 | exc_reserved0: |