Subversion Repositories HelenOS

Rev

Rev 1269 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 1269 Rev 1277
Line 31... Line 31...
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 SP in SPRG1
 36 
	# save R12 in SPRG1, backup CR in R12
37 
	# save R12 in SPRG2, backup CR in R12
 37 
	# save SP in SPRG2
38 
 
 38 
 
39 
	mtsprg1 sp
 - 
 
40 
	mtsprg2 r12
 39 
	mtsprg1 r12
41 
	mfcr r12
 40 
	mfcr r12
- 
 
 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
Line 53... Line 53...
53
53
54 
	1:
 54 
	1:
55
55
56 
		# stack is in kernel
 56 
		# stack is in kernel
57
57
58 
		mfsprg1 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, 140
 63 
	subi sp, sp, 148
64 
	stw r0, 0(sp)
 64 
	stw r0, 0(sp)
65 
	stw r2, 4(sp)
 65 
	stw r2, 4(sp)
66 
	stw r3, 8(sp)
 66 
	stw r3, 8(sp)
67 
	stw r4, 12(sp)
 67 
	stw r4, 12(sp)
68 
	stw r5, 16(sp)
 68 
	stw r5, 16(sp)
Line 90... Line 90...
90 
	stw r28, 104(sp)
 90 
	stw r28, 104(sp)
91 
	stw r29, 108(sp)
 91 
	stw r29, 108(sp)
92 
	stw r30, 112(sp)
 92 
	stw r30, 112(sp)
93 
	stw r31, 116(sp)
 93 
	stw r31, 116(sp)
94
94
95 
	mfsrr0 r3
 - 
 
96 
	stw r3, 120(sp)
 95 
	stw r12, 120(sp)
97
96
98 
	mfsrr1 r3
 97 
	mfsrr0 r12
99 
	stw r3, 124(sp)
 98 
	stw r12, 124(sp)
100
99
101 
	mflr r3
 100 
	mfsrr1 r12
102 
	stw r3, 128(sp)
 101 
	stw r12, 128(sp)
103
102
- 
 
 103 
	mflr r12
104 
	stw r12, 132(sp)
 104 
	stw r12, 132(sp)
105
105
106 
	mfctr r3
 106 
	mfctr r12
107 
	stw r3, 136(sp)
 107 
	stw r12, 136(sp)
108
108
109 
	mfxer r3
 109 
	mfxer r12
110 
	stw r3, 140(sp)
 110 
	stw r12, 140(sp)
- 
 
 111
- 
 
 112 
	mfsprg1 r12
- 
 
 113 
	stw r12, 144(sp)
- 
 
 114
- 
 
 115 
	mfsprg2 r12
- 
 
 116 
	stw r12, 148(sp)
111 
.endm
 117 
.endm
112 
 
 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 
	rfi
- 
 
 132 
 
- 
 
 133 
jump_to_kernel_syscall:
- 
 
 134 
	lis r12, syscall_handler@ha
- 
 
 135 
	addi r12, r12, syscall_handler@l
- 
 
 136 
	mtsrr0 r12
- 
 
 137
- 
 
 138 
	lis r12, iret_syscall@ha
- 
 
 139 
	addi r12, r12, iret_syscall@l
- 
 
 140 
	mtlr r12
- 
 
 141 
 
- 
 
 142 
	mfmsr r12
- 
 
 143 
	ori r12, r12, (msr_ir | msr_dr)@l
- 
 
 144 
	mtsrr1 r12
- 
 
 145
- 
 
 146 
	addis sp, sp, 0x8000
- 
 
 147 
	rfi
- 
 
 148 
 
113 
.org 0x100
 149 
.org 0x100
114 
.global exc_system_reset
 150 
.global exc_system_reset
115 
exc_system_reset:
 151 
exc_system_reset:
116 
	b exc_system_reset
 152 
	b exc_system_reset
117 
 
 153 
 
Line 123... Line 159...
123 
.org 0x300
 159 
.org 0x300
124 
.global exc_data_storage
 160 
.global exc_data_storage
125 
exc_data_storage:
 161 
exc_data_storage:
126 
	CONTEXT_STORE
 162 
	CONTEXT_STORE
127
163
128 
	lis r3, pht_refill@ha
 164 
	lis r12, pht_refill@ha
129 
	addi r3, r3, pht_refill@l
 165 
	addi r12, r12, pht_refill@l
130 
	mtsrr0 r3
 166 
	mtsrr0 r12
131
- 
 
132 
	mfmsr r3
 - 
 
133 
	ori r3, r3, (msr_ir | msr_dr)@l
 - 
 
134 
	mtsrr1 r3
 - 
 
135
- 
 
136 
	lis r3, iret@ha
 - 
 
137 
	addi r3, r3, iret@l
 - 
 
138 
	mtlr r3
 - 
 
139
167
140 
	addis sp, sp, 0x8000
 - 
 
141 
	li r3, 1
 168 
	li r3, 1
142 
	mr r4, sp
 169 
	b jump_to_kernel
143 
	rfi
 - 
 
144 
 
 170 
 
145 
.org 0x400
 171 
.org 0x400
146 
.global exc_instruction_storage
 172 
.global exc_instruction_storage
147 
exc_instruction_storage:
 173 
exc_instruction_storage:
148 
	CONTEXT_STORE
 174 
	CONTEXT_STORE
149
175
150 
	lis r3, pht_refill@ha
 176 
	lis r12, pht_refill@ha
151 
	addi r3, r3, pht_refill@l
 177 
	addi r12, r12, pht_refill@l
152 
	mtsrr0 r3
 178 
	mtsrr0 r12
153
- 
 
154 
	mfmsr r3
 - 
 
155 
	ori r3, r3, (msr_ir | msr_dr)@l
 - 
 
156 
	mtsrr1 r3
 - 
 
157
- 
 
158 
	lis r3, iret@ha
 - 
 
159 
	addi r3, r3, iret@l
 - 
 
160 
	mtlr r3
 - 
 
161
179
162 
	addis sp, sp, 0x8000
 - 
 
163 
	li r3, 0
 180 
	li r3, 0
164 
	mr r4, sp
 181 
	b jump_to_kernel
165 
	rfi
 - 
 
166 
 
 182 
 
167 
.org 0x500
 183 
.org 0x500
168 
.global exc_external
 184 
.global exc_external
169 
exc_external:
 185 
exc_external:
170 
	b exc_external
 186 
	b exc_external
Line 187... Line 203...
187 
.org 0x900
 203 
.org 0x900
188 
.global exc_decrementer
 204 
.global exc_decrementer
189 
exc_decrementer:
 205 
exc_decrementer:
190 
	CONTEXT_STORE
206 
	CONTEXT_STORE
191 
 
 207 
 
192 
	lis r3, exc_dispatch@ha
 208 
	lis r12, exc_dispatch@ha
193 
	addi r3, r3, exc_dispatch@l
 209 
	addi r12, r12, exc_dispatch@l
194 
	mtsrr0 r3
 210 
	mtsrr0 r12
195
- 
 
196 
	mfmsr r3
 - 
 
197 
	ori r3, r3, (msr_ir | msr_dr)@l
 - 
 
198 
	mtsrr1 r3
 - 
 
199
- 
 
200 
	lis r3, iret@ha
 - 
 
201 
	addi r3, r3, iret@l
 - 
 
202 
	mtlr r3
 - 
 
203
211
204 
	addis sp, sp, 0x8000
 - 
 
205 
	li r3, 10
 212 
	li r3, 10
206 
	mr r4, sp
 213 
	b jump_to_kernel
207 
	rfi
 - 
 
208 
 
 214 
 
209 
.org 0xa00
 215 
.org 0xa00
210 
.global exc_reserved0
 216 
.global exc_reserved0
211 
exc_reserved0:
 217 
exc_reserved0:
212 
	b exc_reserved0
 218 
	b exc_reserved0
Line 217... Line 223...
217 
	b exc_reserved1
 223 
	b exc_reserved1
218 
 
 224 
 
219 
.org 0xc00
 225 
.org 0xc00
220 
.global exc_syscall
 226 
.global exc_syscall
221 
exc_syscall:
 227 
exc_syscall:
- 
 
 228 
	CONTEXT_STORE
- 
 
 229
222 
	b exc_syscall
 230 
	b jump_to_kernel_syscall
223 
 
 231 
 
224 
.org 0xd00
 232 
.org 0xd00
225 
.global exc_trace
 233 
.global exc_trace
226 
exc_trace:
 234 
exc_trace:
227 
	b exc_trace
 235 
	b exc_trace