WebSVN – HelenOS – Diff – /trunk/kernel/arch/ppc32/src/exception.S


#
# Copyright (c) 2006 Martin Decky
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# - Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in the
#   documentation and/or other materials provided with the distribution.
# - The name of the author may not be used to endorse or promote products
#   derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
 
#include <arch/asm/regname.h>
#include <arch/mm/page.h>
 
.section K_UNMAPPED_TEXT_START, "ax"
 
.macro CONTEXT_STORE
	
	# save R12 in SPRG1, backup CR in R12
	# save SP in SPRG2
 
	mtsprg1 r12
	mfcr r12
	mtsprg2 sp
	
	# check whether SP is in kernel
	
	andis. sp, sp, 0x8000
	bne 1f
	
		# stack is in user-space
		
		mfsprg0 sp
	
	b 2f
	
	1:
	
		# stack is in kernel
		
		mfsprg2 sp
		subis sp, sp, 0x8000
	
	2:
	
	subi sp, sp, 164
	stw r0, 8(sp)
	stw r2, 12(sp)
	stw r3, 16(sp)
	stw r4, 20(sp)
	stw r5, 24(sp)
	stw r6, 28(sp)
	stw r7, 32(sp)
	stw r8, 36(sp)
	stw r9, 40(sp)
	stw r10, 44(sp)
	stw r11, 48(sp)
	stw r13, 52(sp)
	stw r14, 56(sp)
	stw r15, 60(sp)
	stw r16, 64(sp)
	stw r17, 68(sp)
	stw r18, 72(sp)
	stw r19, 76(sp)
	stw r20, 80(sp)
	stw r21, 84(sp)
	stw r22, 88(sp)
	stw r23, 92(sp)
	stw r24, 96(sp)
	stw r25, 100(sp)
	stw r26, 104(sp)
	stw r27, 108(sp)
	stw r28, 112(sp)
	stw r29, 116(sp)
	stw r30, 120(sp)
	stw r31, 124(sp)
	
	stw r12, 128(sp)
	
	mfsrr0 r12
	stw r12, 132(sp)
	
	mfsrr1 r12
	stw r12, 136(sp)
	
	mflr r12
	stw r12, 140(sp)
	
	mfctr r12
	stw r12, 144(sp)
	
	mfxer r12
	stw r12, 148(sp)
	
	mfdar r12
	stw r12, 152(sp)
	
	mfsprg1 r12
	stw r12, 156(sp)
	
	mfsprg2 r12
	stw r12, 160(sp)
.endm
 
.org 0x100
.global exc_system_reset
exc_system_reset:
	CONTEXT_STORE
	
	li r3, 0
	b jump_to_kernel
 
.org 0x200
.global exc_machine_check
exc_machine_check:
	CONTEXT_STORE
	
	li r3, 1
	b jump_to_kernel
 
.org 0x300
.global exc_data_storage
exc_data_storage:
	CONTEXT_STORE
	
	b data_storage
 
.org 0x400
.global exc_instruction_storage
exc_instruction_storage:
	CONTEXT_STORE
	
	b instruction_storage
 
.org 0x500
.global exc_external
exc_external:
	CONTEXT_STORE
	
	li r3, 4
	b jump_to_kernel
 
.org 0x600
.global exc_alignment
exc_alignment:
	CONTEXT_STORE
	
	li r3, 5
	b jump_to_kernel
 
.org 0x700
.global exc_program
exc_program:
	CONTEXT_STORE
	
	li r3, 6
	b jump_to_kernel
 
.org 0x800
.global exc_fp_unavailable
exc_fp_unavailable:
	CONTEXT_STORE
	
	li r3, 7
	b jump_to_kernel
 
.org 0x900
.global exc_decrementer
exc_decrementer:
	CONTEXT_STORE
	
	li r3, 8
	b jump_to_kernel
 
.org 0xa00
.global exc_reserved0
exc_reserved0:
	CONTEXT_STORE
	
	li r3, 9
	b jump_to_kernel
 
.org 0xb00
.global exc_reserved1
exc_reserved1:
	CONTEXT_STORE
	
	li r3, 10
	b jump_to_kernel
 
.org 0xc00
.global exc_syscall
exc_syscall:
	CONTEXT_STORE
	
	b jump_to_kernel_syscall
 
.org 0xd00
.global exc_trace
exc_trace:
	CONTEXT_STORE
	
	li r3, 12
	b jump_to_kernel
 
.org 0x1000
.global exc_itlb_miss
exc_itlb_miss:
	CONTEXT_STORE
	
	b tlb_miss
 
.org 0x1100
.global exc_dtlb_miss_load
exc_dtlb_miss_load:
	CONTEXT_STORE
	
	b tlb_miss
 
.org 0x1200
.global exc_dtlb_miss_store
exc_dtlb_miss_store:
	CONTEXT_STORE
	
	b tlb_miss
 
.org 0x4000
data_storage:
	li r3, 2
	mr r4, sp
	addi r4, r4, 8
	bl pht_refill_real
	
	cmpwi r3, 0
	bne iret_real
	
	li r3, 2
	b jump_to_kernel
 
instruction_storage:
	li r3, 3
	mr r4, sp
	addi r4, r4, 8
	bl pht_refill_real
	
	cmpwi r3, 0
	bne iret_real
	
	li r3, 3
	b jump_to_kernel
 
tlb_miss:
	li r3, 16
	mfspr r4, tlbmiss
	mfspr r5, ptehi
	mfspr r6, ptelo
	mr r7, sp
	addi r7, r7, 20
	
	bl tlb_refill_real
	b iret_real
 
jump_to_kernel:
	lis r12, iret@ha
	addi r12, r12, iret@l
	mtlr r12
	
	lis r12, exc_dispatch@ha
	addi r12, r12, exc_dispatch@l
	mtsrr0 r12
	
	mfmsr r12
	ori r12, r12, (msr_ir | msr_dr)@l
	mtsrr1 r12
	
	addis sp, sp, 0x8000
	mr r4, sp
	addi r4, r4, 8
	
	rfi
 
jump_to_kernel_syscall:
	lis r12, syscall_handler@ha
	addi r12, r12, syscall_handler@l
	mtsrr0 r12
	
	lis r12, iret_syscall@ha
	addi r12, r12, iret_syscall@l
	mtlr r12
	
	mfmsr r12
	ori r12, r12, (msr_ir | msr_dr)@l
	mtsrr1 r12
	
	addis sp, sp, 0x8000
	rfi
 
iret_real:
	lwz r0, 8(sp)
	lwz r2, 12(sp)
	lwz r3, 16(sp)
	lwz r4, 20(sp)
	lwz r5, 24(sp)
	lwz r6, 28(sp)
	lwz r7, 32(sp)
	lwz r8, 36(sp)
	lwz r9, 40(sp)
	lwz r10, 44(sp)
	lwz r11, 48(sp)
	lwz r13, 52(sp)
	lwz r14, 56(sp)
	lwz r15, 60(sp)
	lwz r16, 64(sp)
	lwz r17, 68(sp)
	lwz r18, 72(sp)
	lwz r19, 76(sp)
	lwz r20, 80(sp)
	lwz r21, 84(sp)
	lwz r22, 88(sp)
	lwz r23, 92(sp)
	lwz r24, 96(sp)
	lwz r25, 100(sp)
	lwz r26, 104(sp)
	lwz r27, 108(sp)
	lwz r28, 112(sp)
	lwz r29, 116(sp)
	lwz r30, 120(sp)
	lwz r31, 124(sp)
	
	lwz r12, 128(sp)
	mtcr r12
	
	lwz r12, 132(sp)
	mtsrr0 r12
	
	lwz r12, 136(sp)
	mtsrr1 r12
	
	lwz r12, 140(sp)
	mtlr r12
	
	lwz r12, 144(sp)
	mtctr r12
	
	lwz r12, 148(sp)
	mtxer r12
	
	lwz r12, 156(sp)
	lwz sp, 160(sp)
	
	rfi
 

Rev 3837	Rev 3857
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, 164	63	subi sp, sp, 164
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	mfdar r12	112	mfdar r12
113	stw r12, 152(sp)	113	stw r12, 152(sp)
114		114
115	mfsprg1 r12	115	mfsprg1 r12
116	stw r12, 156(sp)	116	stw r12, 156(sp)
117		117
118	mfsprg2 r12	118	mfsprg2 r12
119	stw r12, 160(sp)	119	stw r12, 160(sp)
120	.endm	120	.endm
121		121
122	.org 0x100	122	.org 0x100
123	.global exc_system_reset	123	.global exc_system_reset
124	exc_system_reset:	124	exc_system_reset:
125	CONTEXT_STORE	125	CONTEXT_STORE
126		126
127	li r3, 0	127	li r3, 0
128	b jump_to_kernel	128	b jump_to_kernel
129		129
130	.org 0x200	130	.org 0x200
131	.global exc_machine_check	131	.global exc_machine_check
132	exc_machine_check:	132	exc_machine_check:
133	CONTEXT_STORE	133	CONTEXT_STORE
134		134
135	li r3, 1	135	li r3, 1
136	b jump_to_kernel	136	b jump_to_kernel
137		137
138	.org 0x300	138	.org 0x300
139	.global exc_data_storage	139	.global exc_data_storage
140	exc_data_storage:	140	exc_data_storage:
141	CONTEXT_STORE	141	CONTEXT_STORE
142		142
143	b data_storage	143	b data_storage
144		144
145	.org 0x400	145	.org 0x400
146	.global exc_instruction_storage	146	.global exc_instruction_storage
147	exc_instruction_storage:	147	exc_instruction_storage:
148	CONTEXT_STORE	148	CONTEXT_STORE
149		149
150	b instruction_storage	150	b instruction_storage
151		151
152	.org 0x500	152	.org 0x500
153	.global exc_external	153	.global exc_external
154	exc_external:	154	exc_external:
155	CONTEXT_STORE	155	CONTEXT_STORE
156		156
157	li r3, 4	157	li r3, 4
158	b jump_to_kernel	158	b jump_to_kernel
159		159
160	.org 0x600	160	.org 0x600
161	.global exc_alignment	161	.global exc_alignment
162	exc_alignment:	162	exc_alignment:
163	CONTEXT_STORE	163	CONTEXT_STORE
164		164
165	li r3, 5	165	li r3, 5
166	b jump_to_kernel	166	b jump_to_kernel
167		167
168	.org 0x700	168	.org 0x700
169	.global exc_program	169	.global exc_program
170	exc_program:	170	exc_program:
171	CONTEXT_STORE	171	CONTEXT_STORE
172		172
173	li r3, 6	173	li r3, 6
174	b jump_to_kernel	174	b jump_to_kernel
175		175
176	.org 0x800	176	.org 0x800
177	.global exc_fp_unavailable	177	.global exc_fp_unavailable
178	exc_fp_unavailable:	178	exc_fp_unavailable:
179	CONTEXT_STORE	179	CONTEXT_STORE
180		180
181	li r3, 7	181	li r3, 7
182	b jump_to_kernel	182	b jump_to_kernel
183		183
184	.org 0x900	184	.org 0x900
185	.global exc_decrementer	185	.global exc_decrementer
186	exc_decrementer:	186	exc_decrementer:
187	CONTEXT_STORE	187	CONTEXT_STORE
188		188
189	li r3, 8	189	li r3, 8
190	b jump_to_kernel	190	b jump_to_kernel
191		191
192	.org 0xa00	192	.org 0xa00
193	.global exc_reserved0	193	.global exc_reserved0
194	exc_reserved0:	194	exc_reserved0:
195	CONTEXT_STORE	195	CONTEXT_STORE
196		196
197	li r3, 9	197	li r3, 9
198	b jump_to_kernel	198	b jump_to_kernel
199		199
200	.org 0xb00	200	.org 0xb00
201	.global exc_reserved1	201	.global exc_reserved1
202	exc_reserved1:	202	exc_reserved1:
203	CONTEXT_STORE	203	CONTEXT_STORE
204		204
205	li r3, 10	205	li r3, 10
206	b jump_to_kernel	206	b jump_to_kernel
207		207
208	.org 0xc00	208	.org 0xc00
209	.global exc_syscall	209	.global exc_syscall
210	exc_syscall:	210	exc_syscall:
211	CONTEXT_STORE	211	CONTEXT_STORE
212		212
213	b jump_to_kernel_syscall	213	b jump_to_kernel_syscall
214		214
215	.org 0xd00	215	.org 0xd00
216	.global exc_trace	216	.global exc_trace
217	exc_trace:	217	exc_trace:
218	CONTEXT_STORE	218	CONTEXT_STORE
219		219
220	li r3, 12	220	li r3, 12
221	b jump_to_kernel	221	b jump_to_kernel
222		222
-		223	.org 0x1000
-		224	.global exc_itlb_miss
-		225	exc_itlb_miss:
-		226	CONTEXT_STORE
-		227
-		228	b tlb_miss
-		229
-		230	.org 0x1100
-		231	.global exc_dtlb_miss_load
-		232	exc_dtlb_miss_load:
-		233	CONTEXT_STORE
-		234
-		235	b tlb_miss
-		236
-		237	.org 0x1200
-		238	.global exc_dtlb_miss_store
-		239	exc_dtlb_miss_store:
-		240	CONTEXT_STORE
-		241
-		242	b tlb_miss
-		243
223	.org 0x4000	244	.org 0x4000
224	data_storage:	245	data_storage:
225	li r3, 2	246	li r3, 2
226	mr r4, sp	247	mr r4, sp
227	addi r4, r4, 8	248	addi r4, r4, 8
228	bl pht_refill_real	249	bl pht_refill_real
229		250
230	cmpwi r3, 0	251	cmpwi r3, 0
231	bne iret_real	252	bne iret_real
232		253
233	li r3, 2	254	li r3, 2
234	b jump_to_kernel	255	b jump_to_kernel
235		256
236	instruction_storage:	257	instruction_storage:
237	li r3, 3	258	li r3, 3
238	mr r4, sp	259	mr r4, sp
239	addi r4, r4, 8	260	addi r4, r4, 8
240	bl pht_refill_real	261	bl pht_refill_real
241		262
242	cmpwi r3, 0	263	cmpwi r3, 0
243	bne iret_real	264	bne iret_real
244		265
245	li r3, 3	266	li r3, 3
246	b jump_to_kernel	267	b jump_to_kernel
247		268
-		269	tlb_miss:
-		270	li r3, 16
-		271	mfspr r4, tlbmiss
-		272	mfspr r5, ptehi
-		273	mfspr r6, ptelo
-		274	mr r7, sp
-		275	addi r7, r7, 20
-		276
-		277	bl tlb_refill_real
-		278	b iret_real
-		279
248	jump_to_kernel:	280	jump_to_kernel:
249	lis r12, iret@ha	281	lis r12, iret@ha
250	addi r12, r12, iret@l	282	addi r12, r12, iret@l
251	mtlr r12	283	mtlr r12
252		284
253	lis r12, exc_dispatch@ha	285	lis r12, exc_dispatch@ha
254	addi r12, r12, exc_dispatch@l	286	addi r12, r12, exc_dispatch@l
255	mtsrr0 r12	287	mtsrr0 r12
256		288
257	mfmsr r12	289	mfmsr r12
258	ori r12, r12, (msr_ir \| msr_dr)@l	290	ori r12, r12, (msr_ir \| msr_dr)@l
259	mtsrr1 r12	291	mtsrr1 r12
260		292
261	addis sp, sp, 0x8000	293	addis sp, sp, 0x8000
262	mr r4, sp	294	mr r4, sp
263	addi r4, r4, 8	295	addi r4, r4, 8
264		296
265	rfi	297	rfi
266		298
267	jump_to_kernel_syscall:	299	jump_to_kernel_syscall:
268	lis r12, syscall_handler@ha	300	lis r12, syscall_handler@ha
269	addi r12, r12, syscall_handler@l	301	addi r12, r12, syscall_handler@l
270	mtsrr0 r12	302	mtsrr0 r12
271		303
272	lis r12, iret_syscall@ha	304	lis r12, iret_syscall@ha
273	addi r12, r12, iret_syscall@l	305	addi r12, r12, iret_syscall@l
274	mtlr r12	306	mtlr r12
275		307
276	mfmsr r12	308	mfmsr r12
277	ori r12, r12, (msr_ir \| msr_dr)@l	309	ori r12, r12, (msr_ir \| msr_dr)@l
278	mtsrr1 r12	310	mtsrr1 r12
279		311
280	addis sp, sp, 0x8000	312	addis sp, sp, 0x8000
281	rfi	313	rfi
282		314
283	iret_real:	315	iret_real:
284	lwz r0, 8(sp)	316	lwz r0, 8(sp)
285	lwz r2, 12(sp)	317	lwz r2, 12(sp)
286	lwz r3, 16(sp)	318	lwz r3, 16(sp)
287	lwz r4, 20(sp)	319	lwz r4, 20(sp)
288	lwz r5, 24(sp)	320	lwz r5, 24(sp)
289	lwz r6, 28(sp)	321	lwz r6, 28(sp)
290	lwz r7, 32(sp)	322	lwz r7, 32(sp)
291	lwz r8, 36(sp)	323	lwz r8, 36(sp)
292	lwz r9, 40(sp)	324	lwz r9, 40(sp)
293	lwz r10, 44(sp)	325	lwz r10, 44(sp)
294	lwz r11, 48(sp)	326	lwz r11, 48(sp)
295	lwz r13, 52(sp)	327	lwz r13, 52(sp)
296	lwz r14, 56(sp)	328	lwz r14, 56(sp)
297	lwz r15, 60(sp)	329	lwz r15, 60(sp)
298	lwz r16, 64(sp)	330	lwz r16, 64(sp)
299	lwz r17, 68(sp)	331	lwz r17, 68(sp)
300	lwz r18, 72(sp)	332	lwz r18, 72(sp)
301	lwz r19, 76(sp)	333	lwz r19, 76(sp)
302	lwz r20, 80(sp)	334	lwz r20, 80(sp)
303	lwz r21, 84(sp)	335	lwz r21, 84(sp)
304	lwz r22, 88(sp)	336	lwz r22, 88(sp)
305	lwz r23, 92(sp)	337	lwz r23, 92(sp)
306	lwz r24, 96(sp)	338	lwz r24, 96(sp)
307	lwz r25, 100(sp)	339	lwz r25, 100(sp)
308	lwz r26, 104(sp)	340	lwz r26, 104(sp)
309	lwz r27, 108(sp)	341	lwz r27, 108(sp)
310	lwz r28, 112(sp)	342	lwz r28, 112(sp)
311	lwz r29, 116(sp)	343	lwz r29, 116(sp)
312	lwz r30, 120(sp)	344	lwz r30, 120(sp)
313	lwz r31, 124(sp)	345	lwz r31, 124(sp)
314		346
315	lwz r12, 128(sp)	347	lwz r12, 128(sp)
316	mtcr r12	348	mtcr r12
317		349
318	lwz r12, 132(sp)	350	lwz r12, 132(sp)
319	mtsrr0 r12	351	mtsrr0 r12
320		352
321	lwz r12, 136(sp)	353	lwz r12, 136(sp)
322	mtsrr1 r12	354	mtsrr1 r12
323		355
324	lwz r12, 140(sp)	356	lwz r12, 140(sp)
325	mtlr r12	357	mtlr r12
326		358
327	lwz r12, 144(sp)	359	lwz r12, 144(sp)
328	mtctr r12	360	mtctr r12
329		361
330	lwz r12, 148(sp)	362	lwz r12, 148(sp)
331	mtxer r12	363	mtxer r12
332		364
333	lwz r12, 156(sp)	365	lwz r12, 156(sp)
334	lwz sp, 160(sp)	366	lwz sp, 160(sp)
335		367
336	rfi	368	rfi
337		369

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ppc32/src/exception.S @ 2071 – Rev 3837 → 3857