WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia64/src/context.S


#
# Copyright (c) 2005 Jakub Jermar
# 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.
#
 
.text
 
.global context_save_arch
.global context_restore_arch
 
context_save_arch:
	alloc loc0 = ar.pfs, 1, 8, 0, 0
	mov loc1 = ar.unat	;;
	/* loc2 */
	mov loc3 = ar.rsc
 
	.auto
 
	/*
	 * Flush dirty registers to backing store.
	 * After this ar.bsp and ar.bspstore are equal.
	 */
	flushrs
	mov loc4 = ar.bsp	
	
	/*
	 * Put RSE to enforced lazy mode.
	 * So that ar.rnat can be read.
	 */
	and loc5 = ~3, loc3
	mov ar.rsc = loc5
	mov loc5 = ar.rnat
 
	.explicit
 
	mov loc6 = ar.lc
	
	/*
	 * Save application registers
	 */
	st8 [in0] = loc0, 8	;;	/* save ar.pfs */
	st8 [in0] = loc1, 8	;;	/* save ar.unat (caller) */
	mov loc2 = in0		;;
	add in0 = 8, in0	;;	/* skip ar.unat (callee) */
	st8 [in0] = loc3, 8	;;	/* save ar.rsc */
	st8 [in0] = loc4, 8	;;	/* save ar.bsp */
	st8 [in0] = loc5, 8	;;	/* save ar.rnat */
	st8 [in0] = loc6, 8	;;	/* save ar.lc */
	
	/*
	 * Save general registers including NaT bits
	 */
	st8.spill [in0] = r1, 8		;;
	st8.spill [in0] = r4, 8		;;
	st8.spill [in0] = r5, 8		;;
	st8.spill [in0] = r6, 8		;;
	st8.spill [in0] = r7, 8		;;
	st8.spill [in0] = r12, 8	;;	/* save sp */
	st8.spill [in0] = r13, 8	;;
 
	mov loc3 = ar.unat		;;
	st8 [loc2] = loc3		/* save ar.unat (callee) */
 
	/*
	 * Save branch registers
	 */
	mov loc2 = b0		;;
	st8 [in0] = loc2, 8		/* save pc */
	mov loc3 = b1		;;
	st8 [in0] = loc3, 8
	mov loc4 = b2		;;
	st8 [in0] = loc4, 8
	mov loc5 = b3		;;
	st8 [in0] = loc5, 8
	mov loc6 = b4		;;
	st8 [in0] = loc6, 8
	mov loc7 = b5		;;
	st8 [in0] = loc7, 8
 
	/*
	 * Save predicate registers
	 */
	mov loc2 = pr		;;
	st8 [in0] = loc2, 16;; 		/* Next fpu registers should be spilled to 16B aligned address */
 
	/*
	 * Save floating-point registers.
	 */
	stf.spill [in0] = f2, 16 ;;
	stf.spill [in0] = f3, 16 ;;
	stf.spill [in0] = f4, 16 ;;
	stf.spill [in0] = f5, 16 ;;
 
	stf.spill [in0] = f16, 16 ;;
	stf.spill [in0] = f17, 16 ;;
	stf.spill [in0] = f18, 16 ;;
	stf.spill [in0] = f19, 16 ;;
	stf.spill [in0] = f20, 16 ;;
	stf.spill [in0] = f21, 16 ;;
	stf.spill [in0] = f22, 16 ;;
	stf.spill [in0] = f23, 16 ;;
	stf.spill [in0] = f24, 16 ;;
	stf.spill [in0] = f25, 16 ;;
	stf.spill [in0] = f26, 16 ;;
	stf.spill [in0] = f27, 16 ;;
	stf.spill [in0] = f28, 16 ;;
	stf.spill [in0] = f29, 16 ;;
	stf.spill [in0] = f30, 16 ;;
	stf.spill [in0] = f31, 16 ;;
 
	mov ar.unat = loc1
	
	add r8 = r0, r0, 1 		/* context_save returns 1 */
	br.ret.sptk.many b0
 
context_restore_arch:
	alloc loc0 = ar.pfs, 1, 9, 0, 0	;;
 
	ld8 loc0 = [in0], 8	;;	/* load ar.pfs */
	ld8 loc1 = [in0], 8	;;	/* load ar.unat (caller) */
	ld8 loc2 = [in0], 8	;;	/* load ar.unat (callee) */
	ld8 loc3 = [in0], 8	;;	/* load ar.rsc */
	ld8 loc4 = [in0], 8	;;	/* load ar.bsp */
	ld8 loc5 = [in0], 8	;;	/* load ar.rnat */
	ld8 loc6 = [in0], 8	;;	/* load ar.lc */
	
	.auto	
 
	/*
	 * Invalidate the ALAT
	 */
	invala
 
	/*
	 * Put RSE to enforced lazy mode.
	 * So that ar.bspstore and ar.rnat can be written.
	 */
	movl loc8 = ~3
	and loc8 = loc3, loc8
	mov ar.rsc = loc8
 
	/*
	 * Flush dirty registers to backing store.
	 * We do this because we want the following move
	 * to ar.bspstore to assign the same value to ar.bsp.
	 */
	flushrs
 
	/*
	 * Restore application registers
	 */
	mov ar.bspstore = loc4	/* rse.bspload = ar.bsp = ar.bspstore = loc4 */
	mov ar.rnat = loc5
	mov ar.pfs = loc0
	mov ar.rsc = loc3
 
	.explicit
 
	mov ar.unat = loc2	;;
	mov ar.lc = loc6
	
	/*
	 * Restore general registers including NaT bits
	 */
	ld8.fill r1 = [in0], 8	;;
	ld8.fill r4 = [in0], 8	;;
	ld8.fill r5 = [in0], 8	;;
	ld8.fill r6 = [in0], 8	;;
	ld8.fill r7 = [in0], 8	;;
	ld8.fill r12 = [in0], 8	;;	/* restore sp */
	ld8.fill r13 = [in0], 8	;;
 
	/* 
	 * Restore branch registers
	 */
	ld8 loc2 = [in0], 8	;;	/* restore pc */
	mov b0 = loc2
	ld8 loc3 = [in0], 8	;;
	mov b1 = loc3
	ld8 loc4 = [in0], 8	;;
	mov b2 = loc4
	ld8 loc5 = [in0], 8	;;
	mov b3 = loc5
	ld8 loc6 = [in0], 8	;;
	mov b4 = loc6
	ld8 loc7 = [in0], 8	;;
	mov b5 = loc7
 
	/*
	 * Restore predicate registers
	 */
	ld8 loc2 = [in0], 16	;;
	mov pr = loc2, ~0
	
	/*
	 * Restore floating-point registers.
	 */
	ldf.fill f2 = [in0], 16 ;;
	ldf.fill f3 = [in0], 16 ;;
	ldf.fill f4 = [in0], 16 ;;
	ldf.fill f5 = [in0], 16 ;;
 
	ldf.fill f16 = [in0], 16 ;;
	ldf.fill f17 = [in0], 16 ;;
	ldf.fill f18 = [in0], 16 ;;
	ldf.fill f19 = [in0], 16 ;;
	ldf.fill f20 = [in0], 16 ;;
	ldf.fill f21 = [in0], 16 ;;
	ldf.fill f22 = [in0], 16 ;;
	ldf.fill f23 = [in0], 16 ;;
	ldf.fill f24 = [in0], 16 ;;
	ldf.fill f25 = [in0], 16 ;;
	ldf.fill f26 = [in0], 16 ;;
	ldf.fill f27 = [in0], 16 ;;
	ldf.fill f28 = [in0], 16 ;;
	ldf.fill f29 = [in0], 16 ;;
	ldf.fill f30 = [in0], 16 ;;
	ldf.fill f31 = [in0], 16 ;;
	
	mov ar.unat = loc1
	
	mov r8 = r0			/* context_restore returns 0 */
	br.ret.sptk.many b0
 

Rev 1787	Rev 2071
1	#	1	#
2	# Copyright (C) 2005 Jakub Jermar	2	# Copyright (c) 2005 Jakub Jermar
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	.text	29	.text
30		30
31	.global context_save_arch	31	.global context_save_arch
32	.global context_restore_arch	32	.global context_restore_arch
33		33
34	context_save_arch:	34	context_save_arch:
35	alloc loc0 = ar.pfs, 1, 8, 0, 0	35	alloc loc0 = ar.pfs, 1, 8, 0, 0
36	mov loc1 = ar.unat ;;	36	mov loc1 = ar.unat ;;
37	/ loc2 /	37	/ loc2 /
38	mov loc3 = ar.rsc	38	mov loc3 = ar.rsc
39		39
40	.auto	40	.auto
41		41
42	/*	42	/*
43	* Flush dirty registers to backing store.	43	* Flush dirty registers to backing store.
44	* After this ar.bsp and ar.bspstore are equal.	44	* After this ar.bsp and ar.bspstore are equal.
45	*/	45	*/
46	flushrs	46	flushrs
47	mov loc4 = ar.bsp	47	mov loc4 = ar.bsp
48		48
49	/*	49	/*
50	* Put RSE to enforced lazy mode.	50	* Put RSE to enforced lazy mode.
51	* So that ar.rnat can be read.	51	* So that ar.rnat can be read.
52	*/	52	*/
53	and loc5 = ~3, loc3	53	and loc5 = ~3, loc3
54	mov ar.rsc = loc5	54	mov ar.rsc = loc5
55	mov loc5 = ar.rnat	55	mov loc5 = ar.rnat
56		56
57	.explicit	57	.explicit
58		58
59	mov loc6 = ar.lc	59	mov loc6 = ar.lc
60		60
61	/*	61	/*
62	* Save application registers	62	* Save application registers
63	*/	63	*/
64	st8 [in0] = loc0, 8 ;; / save ar.pfs /	64	st8 [in0] = loc0, 8 ;; / save ar.pfs /
65	st8 [in0] = loc1, 8 ;; / save ar.unat (caller) /	65	st8 [in0] = loc1, 8 ;; / save ar.unat (caller) /
66	mov loc2 = in0 ;;	66	mov loc2 = in0 ;;
67	add in0 = 8, in0 ;; / skip ar.unat (callee) /	67	add in0 = 8, in0 ;; / skip ar.unat (callee) /
68	st8 [in0] = loc3, 8 ;; / save ar.rsc /	68	st8 [in0] = loc3, 8 ;; / save ar.rsc /
69	st8 [in0] = loc4, 8 ;; / save ar.bsp /	69	st8 [in0] = loc4, 8 ;; / save ar.bsp /
70	st8 [in0] = loc5, 8 ;; / save ar.rnat /	70	st8 [in0] = loc5, 8 ;; / save ar.rnat /
71	st8 [in0] = loc6, 8 ;; / save ar.lc /	71	st8 [in0] = loc6, 8 ;; / save ar.lc /
72		72
73	/*	73	/*
74	* Save general registers including NaT bits	74	* Save general registers including NaT bits
75	*/	75	*/
76	st8.spill [in0] = r1, 8 ;;	76	st8.spill [in0] = r1, 8 ;;
77	st8.spill [in0] = r4, 8 ;;	77	st8.spill [in0] = r4, 8 ;;
78	st8.spill [in0] = r5, 8 ;;	78	st8.spill [in0] = r5, 8 ;;
79	st8.spill [in0] = r6, 8 ;;	79	st8.spill [in0] = r6, 8 ;;
80	st8.spill [in0] = r7, 8 ;;	80	st8.spill [in0] = r7, 8 ;;
81	st8.spill [in0] = r12, 8 ;; / save sp /	81	st8.spill [in0] = r12, 8 ;; / save sp /
82	st8.spill [in0] = r13, 8 ;;	82	st8.spill [in0] = r13, 8 ;;
83		83
84	mov loc3 = ar.unat ;;	84	mov loc3 = ar.unat ;;
85	st8 [loc2] = loc3 / save ar.unat (callee) /	85	st8 [loc2] = loc3 / save ar.unat (callee) /
86		86
87	/*	87	/*
88	* Save branch registers	88	* Save branch registers
89	*/	89	*/
90	mov loc2 = b0 ;;	90	mov loc2 = b0 ;;
91	st8 [in0] = loc2, 8 / save pc /	91	st8 [in0] = loc2, 8 / save pc /
92	mov loc3 = b1 ;;	92	mov loc3 = b1 ;;
93	st8 [in0] = loc3, 8	93	st8 [in0] = loc3, 8
94	mov loc4 = b2 ;;	94	mov loc4 = b2 ;;
95	st8 [in0] = loc4, 8	95	st8 [in0] = loc4, 8
96	mov loc5 = b3 ;;	96	mov loc5 = b3 ;;
97	st8 [in0] = loc5, 8	97	st8 [in0] = loc5, 8
98	mov loc6 = b4 ;;	98	mov loc6 = b4 ;;
99	st8 [in0] = loc6, 8	99	st8 [in0] = loc6, 8
100	mov loc7 = b5 ;;	100	mov loc7 = b5 ;;
101	st8 [in0] = loc7, 8	101	st8 [in0] = loc7, 8
102		102
103	/*	103	/*
104	* Save predicate registers	104	* Save predicate registers
105	*/	105	*/
106	mov loc2 = pr ;;	106	mov loc2 = pr ;;
107	st8 [in0] = loc2, 16;; / Next fpu registers should be spilled to 16B aligned address /	107	st8 [in0] = loc2, 16;; / Next fpu registers should be spilled to 16B aligned address /
108		108
109	/*	109	/*
110	* Save floating-point registers.	110	* Save floating-point registers.
111	*/	111	*/
112	stf.spill [in0] = f2, 16 ;;	112	stf.spill [in0] = f2, 16 ;;
113	stf.spill [in0] = f3, 16 ;;	113	stf.spill [in0] = f3, 16 ;;
114	stf.spill [in0] = f4, 16 ;;	114	stf.spill [in0] = f4, 16 ;;
115	stf.spill [in0] = f5, 16 ;;	115	stf.spill [in0] = f5, 16 ;;
116		116
117	stf.spill [in0] = f16, 16 ;;	117	stf.spill [in0] = f16, 16 ;;
118	stf.spill [in0] = f17, 16 ;;	118	stf.spill [in0] = f17, 16 ;;
119	stf.spill [in0] = f18, 16 ;;	119	stf.spill [in0] = f18, 16 ;;
120	stf.spill [in0] = f19, 16 ;;	120	stf.spill [in0] = f19, 16 ;;
121	stf.spill [in0] = f20, 16 ;;	121	stf.spill [in0] = f20, 16 ;;
122	stf.spill [in0] = f21, 16 ;;	122	stf.spill [in0] = f21, 16 ;;
123	stf.spill [in0] = f22, 16 ;;	123	stf.spill [in0] = f22, 16 ;;
124	stf.spill [in0] = f23, 16 ;;	124	stf.spill [in0] = f23, 16 ;;
125	stf.spill [in0] = f24, 16 ;;	125	stf.spill [in0] = f24, 16 ;;
126	stf.spill [in0] = f25, 16 ;;	126	stf.spill [in0] = f25, 16 ;;
127	stf.spill [in0] = f26, 16 ;;	127	stf.spill [in0] = f26, 16 ;;
128	stf.spill [in0] = f27, 16 ;;	128	stf.spill [in0] = f27, 16 ;;
129	stf.spill [in0] = f28, 16 ;;	129	stf.spill [in0] = f28, 16 ;;
130	stf.spill [in0] = f29, 16 ;;	130	stf.spill [in0] = f29, 16 ;;
131	stf.spill [in0] = f30, 16 ;;	131	stf.spill [in0] = f30, 16 ;;
132	stf.spill [in0] = f31, 16 ;;	132	stf.spill [in0] = f31, 16 ;;
133		133
134	mov ar.unat = loc1	134	mov ar.unat = loc1
135		135
136	add r8 = r0, r0, 1 /* context_save returns 1 */	136	add r8 = r0, r0, 1 /* context_save returns 1 */
137	br.ret.sptk.many b0	137	br.ret.sptk.many b0
138		138
139	context_restore_arch:	139	context_restore_arch:
140	alloc loc0 = ar.pfs, 1, 9, 0, 0 ;;	140	alloc loc0 = ar.pfs, 1, 9, 0, 0 ;;
141		141
142	ld8 loc0 = [in0], 8 ;; / load ar.pfs /	142	ld8 loc0 = [in0], 8 ;; / load ar.pfs /
143	ld8 loc1 = [in0], 8 ;; / load ar.unat (caller) /	143	ld8 loc1 = [in0], 8 ;; / load ar.unat (caller) /
144	ld8 loc2 = [in0], 8 ;; / load ar.unat (callee) /	144	ld8 loc2 = [in0], 8 ;; / load ar.unat (callee) /
145	ld8 loc3 = [in0], 8 ;; / load ar.rsc /	145	ld8 loc3 = [in0], 8 ;; / load ar.rsc /
146	ld8 loc4 = [in0], 8 ;; / load ar.bsp /	146	ld8 loc4 = [in0], 8 ;; / load ar.bsp /
147	ld8 loc5 = [in0], 8 ;; / load ar.rnat /	147	ld8 loc5 = [in0], 8 ;; / load ar.rnat /
148	ld8 loc6 = [in0], 8 ;; / load ar.lc /	148	ld8 loc6 = [in0], 8 ;; / load ar.lc /
149		149
150	.auto	150	.auto
151		151
152	/*	152	/*
153	* Invalidate the ALAT	153	* Invalidate the ALAT
154	*/	154	*/
155	invala	155	invala
156		156
157	/*	157	/*
158	* Put RSE to enforced lazy mode.	158	* Put RSE to enforced lazy mode.
159	* So that ar.bspstore and ar.rnat can be written.	159	* So that ar.bspstore and ar.rnat can be written.
160	*/	160	*/
161	movl loc8 = ~3	161	movl loc8 = ~3
162	and loc8 = loc3, loc8	162	and loc8 = loc3, loc8
163	mov ar.rsc = loc8	163	mov ar.rsc = loc8
164		164
165	/*	165	/*
166	* Flush dirty registers to backing store.	166	* Flush dirty registers to backing store.
167	* We do this because we want the following move	167	* We do this because we want the following move
168	* to ar.bspstore to assign the same value to ar.bsp.	168	* to ar.bspstore to assign the same value to ar.bsp.
169	*/	169	*/
170	flushrs	170	flushrs
171		171
172	/*	172	/*
173	* Restore application registers	173	* Restore application registers
174	*/	174	*/
175	mov ar.bspstore = loc4 /* rse.bspload = ar.bsp = ar.bspstore = loc4 */	175	mov ar.bspstore = loc4 /* rse.bspload = ar.bsp = ar.bspstore = loc4 */
176	mov ar.rnat = loc5	176	mov ar.rnat = loc5
177	mov ar.pfs = loc0	177	mov ar.pfs = loc0
178	mov ar.rsc = loc3	178	mov ar.rsc = loc3
179		179
180	.explicit	180	.explicit
181		181
182	mov ar.unat = loc2 ;;	182	mov ar.unat = loc2 ;;
183	mov ar.lc = loc6	183	mov ar.lc = loc6
184		184
185	/*	185	/*
186	* Restore general registers including NaT bits	186	* Restore general registers including NaT bits
187	*/	187	*/
188	ld8.fill r1 = [in0], 8 ;;	188	ld8.fill r1 = [in0], 8 ;;
189	ld8.fill r4 = [in0], 8 ;;	189	ld8.fill r4 = [in0], 8 ;;
190	ld8.fill r5 = [in0], 8 ;;	190	ld8.fill r5 = [in0], 8 ;;
191	ld8.fill r6 = [in0], 8 ;;	191	ld8.fill r6 = [in0], 8 ;;
192	ld8.fill r7 = [in0], 8 ;;	192	ld8.fill r7 = [in0], 8 ;;
193	ld8.fill r12 = [in0], 8 ;; / restore sp /	193	ld8.fill r12 = [in0], 8 ;; / restore sp /
194	ld8.fill r13 = [in0], 8 ;;	194	ld8.fill r13 = [in0], 8 ;;
195		195
196	/*	196	/*
197	* Restore branch registers	197	* Restore branch registers
198	*/	198	*/
199	ld8 loc2 = [in0], 8 ;; / restore pc /	199	ld8 loc2 = [in0], 8 ;; / restore pc /
200	mov b0 = loc2	200	mov b0 = loc2
201	ld8 loc3 = [in0], 8 ;;	201	ld8 loc3 = [in0], 8 ;;
202	mov b1 = loc3	202	mov b1 = loc3
203	ld8 loc4 = [in0], 8 ;;	203	ld8 loc4 = [in0], 8 ;;
204	mov b2 = loc4	204	mov b2 = loc4
205	ld8 loc5 = [in0], 8 ;;	205	ld8 loc5 = [in0], 8 ;;
206	mov b3 = loc5	206	mov b3 = loc5
207	ld8 loc6 = [in0], 8 ;;	207	ld8 loc6 = [in0], 8 ;;
208	mov b4 = loc6	208	mov b4 = loc6
209	ld8 loc7 = [in0], 8 ;;	209	ld8 loc7 = [in0], 8 ;;
210	mov b5 = loc7	210	mov b5 = loc7
211		211
212	/*	212	/*
213	* Restore predicate registers	213	* Restore predicate registers
214	*/	214	*/
215	ld8 loc2 = [in0], 16 ;;	215	ld8 loc2 = [in0], 16 ;;
216	mov pr = loc2, ~0	216	mov pr = loc2, ~0
217		217
218	/*	218	/*
219	* Restore floating-point registers.	219	* Restore floating-point registers.
220	*/	220	*/
221	ldf.fill f2 = [in0], 16 ;;	221	ldf.fill f2 = [in0], 16 ;;
222	ldf.fill f3 = [in0], 16 ;;	222	ldf.fill f3 = [in0], 16 ;;
223	ldf.fill f4 = [in0], 16 ;;	223	ldf.fill f4 = [in0], 16 ;;
224	ldf.fill f5 = [in0], 16 ;;	224	ldf.fill f5 = [in0], 16 ;;
225		225
226	ldf.fill f16 = [in0], 16 ;;	226	ldf.fill f16 = [in0], 16 ;;
227	ldf.fill f17 = [in0], 16 ;;	227	ldf.fill f17 = [in0], 16 ;;
228	ldf.fill f18 = [in0], 16 ;;	228	ldf.fill f18 = [in0], 16 ;;
229	ldf.fill f19 = [in0], 16 ;;	229	ldf.fill f19 = [in0], 16 ;;
230	ldf.fill f20 = [in0], 16 ;;	230	ldf.fill f20 = [in0], 16 ;;
231	ldf.fill f21 = [in0], 16 ;;	231	ldf.fill f21 = [in0], 16 ;;
232	ldf.fill f22 = [in0], 16 ;;	232	ldf.fill f22 = [in0], 16 ;;
233	ldf.fill f23 = [in0], 16 ;;	233	ldf.fill f23 = [in0], 16 ;;
234	ldf.fill f24 = [in0], 16 ;;	234	ldf.fill f24 = [in0], 16 ;;
235	ldf.fill f25 = [in0], 16 ;;	235	ldf.fill f25 = [in0], 16 ;;
236	ldf.fill f26 = [in0], 16 ;;	236	ldf.fill f26 = [in0], 16 ;;
237	ldf.fill f27 = [in0], 16 ;;	237	ldf.fill f27 = [in0], 16 ;;
238	ldf.fill f28 = [in0], 16 ;;	238	ldf.fill f28 = [in0], 16 ;;
239	ldf.fill f29 = [in0], 16 ;;	239	ldf.fill f29 = [in0], 16 ;;
240	ldf.fill f30 = [in0], 16 ;;	240	ldf.fill f30 = [in0], 16 ;;
241	ldf.fill f31 = [in0], 16 ;;	241	ldf.fill f31 = [in0], 16 ;;
242		242
243	mov ar.unat = loc1	243	mov ar.unat = loc1
244		244
245	mov r8 = r0 /* context_restore returns 0 */	245	mov r8 = r0 /* context_restore returns 0 */
246	br.ret.sptk.many b0	246	br.ret.sptk.many b0
247		247

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia64/src/context.S @ 4311 – Rev 1787 → 2071