Rev 83 | Rev 100 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
55 | jermar | 1 | # |
2 | # Copyright (C) 2005 Jakub Jermar |
||
3 | # All rights reserved. |
||
4 | # |
||
5 | # Redistribution and use in source and binary forms, with or without |
||
6 | # modification, are permitted provided that the following conditions |
||
7 | # are met: |
||
8 | # |
||
9 | # - Redistributions of source code must retain the above copyright |
||
10 | # notice, this list of conditions and the following disclaimer. |
||
11 | # - Redistributions in binary form must reproduce the above copyright |
||
12 | # notice, this list of conditions and the following disclaimer in the |
||
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 |
||
15 | # derived from this software without specific prior written permission. |
||
16 | # |
||
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 |
||
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
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 |
||
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 |
||
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
27 | # |
||
28 | |||
29 | .text |
||
30 | |||
31 | .global context_save |
||
32 | .global context_restore |
||
33 | |||
34 | context_save: |
||
94 | jermar | 35 | alloc loc0 = ar.pfs, 1, 11, 0, 0 |
83 | jermar | 36 | mov loc1 = ar.unat ;; |
94 | jermar | 37 | /* loc2 */ |
38 | mov loc3 = ar.rsc |
||
39 | mov loc4 = ar.bsp |
||
40 | mov loc5 = ar.rnat |
||
41 | mov loc6 = ar.lc |
||
42 | mov loc7 = ar.ec |
||
43 | mov loc8 = ar.ccv |
||
44 | mov loc9 = ar.csd |
||
45 | mov loc10 = ar.ssd |
||
59 | jermar | 46 | |
94 | jermar | 47 | /* |
48 | * Save application registers |
||
49 | */ |
||
83 | jermar | 50 | st8 [in0] = loc0, 8 ;; /* save ar.pfs */ |
51 | st8 [in0] = loc1, 8 ;; /* save ar.unat (caller) */ |
||
52 | mov loc2 = in0 ;; |
||
53 | add in0 = 8, in0 ;; /* skip ar.unat (callee) */ |
||
94 | jermar | 54 | st8 [in0] = loc3, 8 ;; /* save ar.rsc */ |
55 | st8 [in0] = loc4, 8 ;; /* save ar.bsp */ |
||
56 | st8 [in0] = loc5, 8 ;; /* save ar.rnat */ |
||
57 | st8 [in0] = loc6, 8 ;; /* save ar.lc */ |
||
58 | st8 [in0] = loc7, 8 ;; /* save ar.ec */ |
||
59 | st8 [in0] = loc8, 8 ;; /* save ar.ccv */ |
||
60 | st8 [in0] = loc9, 8 ;; /* save ar.csd */ |
||
61 | st8 [in0] = loc10, 8 ;; /* save ar.ssd */ |
||
83 | jermar | 62 | |
59 | jermar | 63 | /* |
83 | jermar | 64 | * Save general registers including NaT bits |
82 | jermar | 65 | */ |
83 | jermar | 66 | st8.spill [in0] = r1, 8 ;; |
67 | st8.spill [in0] = r2, 8 ;; |
||
68 | st8.spill [in0] = r3, 8 ;; |
||
69 | st8.spill [in0] = r4, 8 ;; |
||
70 | st8.spill [in0] = r5, 8 ;; |
||
71 | st8.spill [in0] = r6, 8 ;; |
||
72 | st8.spill [in0] = r7, 8 ;; |
||
73 | st8.spill [in0] = r8, 8 ;; |
||
74 | st8.spill [in0] = r9, 8 ;; |
||
75 | st8.spill [in0] = r10, 8 ;; |
||
76 | st8.spill [in0] = r11, 8 ;; |
||
77 | st8.spill [in0] = r12, 8 ;; /* save sp */ |
||
78 | st8.spill [in0] = r13, 8 ;; |
||
79 | st8.spill [in0] = r14, 8 ;; |
||
80 | st8.spill [in0] = r15, 8 ;; |
||
81 | st8.spill [in0] = r16, 8 ;; |
||
82 | st8.spill [in0] = r17, 8 ;; |
||
83 | st8.spill [in0] = r18, 8 ;; |
||
84 | st8.spill [in0] = r19, 8 ;; |
||
85 | st8.spill [in0] = r20, 8 ;; |
||
86 | st8.spill [in0] = r21, 8 ;; |
||
87 | st8.spill [in0] = r22, 8 ;; |
||
88 | st8.spill [in0] = r23, 8 ;; |
||
89 | st8.spill [in0] = r24, 8 ;; |
||
90 | st8.spill [in0] = r25, 8 ;; |
||
91 | st8.spill [in0] = r26, 8 ;; |
||
92 | st8.spill [in0] = r27, 8 ;; |
||
93 | st8.spill [in0] = r28, 8 ;; |
||
94 | st8.spill [in0] = r29, 8 ;; |
||
95 | st8.spill [in0] = r30, 8 ;; |
||
96 | st8.spill [in0] = r31, 8 ;; |
||
59 | jermar | 97 | |
83 | jermar | 98 | mov loc3 = ar.unat ;; |
99 | st8 [loc2] = loc3 /* save ar.unat (callee) */ |
||
100 | |||
82 | jermar | 101 | /* |
102 | * Save branch registers |
||
103 | */ |
||
83 | jermar | 104 | mov loc2 = b0 ;; |
105 | st8 [in0] = loc2, 8 /* save pc */ |
||
106 | mov loc3 = b1 ;; |
||
82 | jermar | 107 | st8 [in0] = loc3, 8 |
83 | jermar | 108 | mov loc4 = b2 ;; |
82 | jermar | 109 | st8 [in0] = loc4, 8 |
83 | jermar | 110 | mov loc5 = b3 ;; |
82 | jermar | 111 | st8 [in0] = loc5, 8 |
83 | jermar | 112 | mov loc6 = b4 ;; |
82 | jermar | 113 | st8 [in0] = loc6, 8 |
83 | jermar | 114 | mov loc7 = b5 ;; |
82 | jermar | 115 | st8 [in0] = loc7, 8 |
83 | jermar | 116 | mov loc8 = b6 ;; |
82 | jermar | 117 | st8 [in0] = loc8, 8 |
83 | jermar | 118 | mov loc9 = b7 ;; |
119 | st8 [in0] = loc9, 8 |
||
82 | jermar | 120 | |
121 | /* |
||
122 | * Save predicate registers |
||
123 | */ |
||
83 | jermar | 124 | mov loc2 = pr ;; |
125 | st8 [in0] = loc2, 8 |
||
59 | jermar | 126 | |
127 | mov ar.pfs = loc0 |
||
83 | jermar | 128 | mov ar.unat = loc1 |
59 | jermar | 129 | |
130 | add r8 = r0, r0, 1 /* context_save returns 1 */ |
||
60 | jermar | 131 | br.ret.sptk.many b0 |
55 | jermar | 132 | |
133 | context_restore: |
||
94 | jermar | 134 | alloc loc0 = ar.pfs, 1, 11, 0, 0 ;; |
59 | jermar | 135 | |
94 | jermar | 136 | ld8 loc0 = [in0], 8 ;; /* load ar.pfs */ |
137 | ld8 loc1 = [in0], 8 ;; /* load ar.unat (caller) */ |
||
138 | ld8 loc2 = [in0], 8 ;; /* load ar.unat (callee) */ |
||
139 | ld8 loc3 = [in0], 8 ;; /* load ar.rsc */ |
||
140 | ld8 loc4 = [in0], 8 ;; /* load ar.bsp */ |
||
141 | ld8 loc5 = [in0], 8 ;; /* load ar.rnat */ |
||
142 | ld8 loc6 = [in0], 8 ;; /* load ar.lc */ |
||
143 | ld8 loc7 = [in0], 8 ;; /* load ar.ec */ |
||
144 | ld8 loc8 = [in0], 8 ;; /* load ar.ccv */ |
||
145 | ld8 loc9 = [in0], 8 ;; /* load ar.csd */ |
||
146 | ld8 loc10 = [in0], 8 ;; /* load ar.ssd */ |
||
147 | |||
59 | jermar | 148 | /* |
94 | jermar | 149 | * Restore application registers |
59 | jermar | 150 | */ |
83 | jermar | 151 | mov ar.unat = loc2 ;; |
94 | jermar | 152 | /* TODO: restore ar.rsc, ar.rnat, ar.bspstore */ |
153 | mov ar.lc = loc6 |
||
154 | mov ar.ec = loc7 |
||
155 | mov ar.ccv = loc8 |
||
156 | mov ar.csd = loc9 |
||
157 | mov ar.ssd = loc10 |
||
83 | jermar | 158 | |
82 | jermar | 159 | /* |
83 | jermar | 160 | * Restore general registers including NaT bits |
82 | jermar | 161 | */ |
83 | jermar | 162 | ld8.fill r1 = [in0], 8 ;; |
163 | ld8.fill r2 = [in0], 8 ;; |
||
164 | ld8.fill r3 = [in0], 8 ;; |
||
165 | ld8.fill r4 = [in0], 8 ;; |
||
166 | ld8.fill r5 = [in0], 8 ;; |
||
167 | ld8.fill r6 = [in0], 8 ;; |
||
168 | ld8.fill r7 = [in0], 8 ;; |
||
169 | ld8.fill r8 = [in0], 8 ;; |
||
170 | ld8.fill r9 = [in0], 8 ;; |
||
171 | ld8.fill r10 = [in0], 8 ;; |
||
172 | ld8.fill r11 = [in0], 8 ;; |
||
173 | ld8.fill r12 = [in0], 8 ;; /* restore sp */ |
||
174 | ld8.fill r13 = [in0], 8 ;; |
||
175 | ld8.fill r14 = [in0], 8 ;; |
||
176 | ld8.fill r15 = [in0], 8 ;; |
||
177 | ld8.fill r16 = [in0], 8 ;; |
||
178 | ld8.fill r17 = [in0], 8 ;; |
||
179 | ld8.fill r18 = [in0], 8 ;; |
||
180 | ld8.fill r19 = [in0], 8 ;; |
||
181 | ld8.fill r20 = [in0], 8 ;; |
||
182 | ld8.fill r21 = [in0], 8 ;; |
||
183 | ld8.fill r22 = [in0], 8 ;; |
||
184 | ld8.fill r23 = [in0], 8 ;; |
||
185 | ld8.fill r24 = [in0], 8 ;; |
||
186 | ld8.fill r25 = [in0], 8 ;; |
||
187 | ld8.fill r26 = [in0], 8 ;; |
||
188 | ld8.fill r27 = [in0], 8 ;; |
||
189 | ld8.fill r28 = [in0], 8 ;; |
||
190 | ld8.fill r29 = [in0], 8 ;; |
||
191 | ld8.fill r30 = [in0], 8 ;; |
||
192 | ld8.fill r31 = [in0], 8 ;; |
||
59 | jermar | 193 | |
82 | jermar | 194 | /* |
195 | * Restore branch registers |
||
196 | */ |
||
83 | jermar | 197 | ld8 loc2 = [in0], 8 ;; /* restore pc */ |
198 | mov b0 = loc2 |
||
82 | jermar | 199 | ld8 loc3 = [in0], 8 ;; |
83 | jermar | 200 | mov b1 = loc3 |
82 | jermar | 201 | ld8 loc4 = [in0], 8 ;; |
83 | jermar | 202 | mov b2 = loc4 |
82 | jermar | 203 | ld8 loc5 = [in0], 8 ;; |
83 | jermar | 204 | mov b3 = loc5 |
82 | jermar | 205 | ld8 loc6 = [in0], 8 ;; |
83 | jermar | 206 | mov b4 = loc6 |
82 | jermar | 207 | ld8 loc7 = [in0], 8 ;; |
83 | jermar | 208 | mov b5 = loc7 |
82 | jermar | 209 | ld8 loc8 = [in0], 8 ;; |
83 | jermar | 210 | mov b6 = loc8 |
211 | ld8 loc9 = [in0], 8 ;; |
||
212 | mov b7 = loc9 |
||
82 | jermar | 213 | |
83 | jermar | 214 | /* |
215 | * Restore predicate registers |
||
216 | */ |
||
217 | ld8 loc2 = [in0], 8 ;; |
||
218 | mov pr = loc2, ~0 |
||
59 | jermar | 219 | |
220 | mov ar.pfs = loc0 |
||
83 | jermar | 221 | mov ar.unat = loc1 |
59 | jermar | 222 | |
223 | mov r8 = r0 /* context_restore returns 0 */ |
||
60 | jermar | 224 | br.ret.sptk.many b0 |