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| 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 |
31 | .global context_save |
| 32 | .global context_restore |
32 | .global context_restore |
| 33 | 33 | ||
| 34 | context_save: |
34 | context_save: |
| 35 | alloc loc0 = ar.pfs, 1, 10, 0, 0 |
35 | alloc loc0 = ar.pfs, 1, 11, 0, 0 |
| 36 | mov loc1 = ar.unat ;; |
36 | mov loc1 = ar.unat ;; |
| - | 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 |
|
| 37 | 46 | ||
| - | 47 | /* |
|
| - | 48 | * Save application registers |
|
| - | 49 | */ |
|
| 38 | st8 [in0] = loc0, 8 ;; /* save ar.pfs */ |
50 | st8 [in0] = loc0, 8 ;; /* save ar.pfs */ |
| 39 | st8 [in0] = loc1, 8 ;; /* save ar.unat (caller) */ |
51 | st8 [in0] = loc1, 8 ;; /* save ar.unat (caller) */ |
| 40 | mov loc2 = in0 ;; |
52 | mov loc2 = in0 ;; |
| 41 | add in0 = 8, in0 ;; /* skip ar.unat (callee) */ |
53 | add in0 = 8, in0 ;; /* skip ar.unat (callee) */ |
| - | 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 */ |
|
| 42 | 62 | ||
| 43 | /* |
63 | /* |
| 44 | * TODO: save the rest of the context registers. |
- | |
| 45 | */ |
- | |
| 46 | - | ||
| 47 | /* |
- | |
| 48 | * Save general registers including NaT bits |
64 | * Save general registers including NaT bits |
| 49 | */ |
65 | */ |
| 50 | st8.spill [in0] = r1, 8 ;; |
66 | st8.spill [in0] = r1, 8 ;; |
| 51 | st8.spill [in0] = r2, 8 ;; |
67 | st8.spill [in0] = r2, 8 ;; |
| 52 | st8.spill [in0] = r3, 8 ;; |
68 | st8.spill [in0] = r3, 8 ;; |
| 53 | st8.spill [in0] = r4, 8 ;; |
69 | st8.spill [in0] = r4, 8 ;; |
| 54 | st8.spill [in0] = r5, 8 ;; |
70 | st8.spill [in0] = r5, 8 ;; |
| 55 | st8.spill [in0] = r6, 8 ;; |
71 | st8.spill [in0] = r6, 8 ;; |
| 56 | st8.spill [in0] = r7, 8 ;; |
72 | st8.spill [in0] = r7, 8 ;; |
| 57 | st8.spill [in0] = r8, 8 ;; |
73 | st8.spill [in0] = r8, 8 ;; |
| 58 | st8.spill [in0] = r9, 8 ;; |
74 | st8.spill [in0] = r9, 8 ;; |
| 59 | st8.spill [in0] = r10, 8 ;; |
75 | st8.spill [in0] = r10, 8 ;; |
| 60 | st8.spill [in0] = r11, 8 ;; |
76 | st8.spill [in0] = r11, 8 ;; |
| 61 | st8.spill [in0] = r12, 8 ;; /* save sp */ |
77 | st8.spill [in0] = r12, 8 ;; /* save sp */ |
| 62 | st8.spill [in0] = r13, 8 ;; |
78 | st8.spill [in0] = r13, 8 ;; |
| 63 | st8.spill [in0] = r14, 8 ;; |
79 | st8.spill [in0] = r14, 8 ;; |
| 64 | st8.spill [in0] = r15, 8 ;; |
80 | st8.spill [in0] = r15, 8 ;; |
| 65 | st8.spill [in0] = r16, 8 ;; |
81 | st8.spill [in0] = r16, 8 ;; |
| 66 | st8.spill [in0] = r17, 8 ;; |
82 | st8.spill [in0] = r17, 8 ;; |
| 67 | st8.spill [in0] = r18, 8 ;; |
83 | st8.spill [in0] = r18, 8 ;; |
| 68 | st8.spill [in0] = r19, 8 ;; |
84 | st8.spill [in0] = r19, 8 ;; |
| 69 | st8.spill [in0] = r20, 8 ;; |
85 | st8.spill [in0] = r20, 8 ;; |
| 70 | st8.spill [in0] = r21, 8 ;; |
86 | st8.spill [in0] = r21, 8 ;; |
| 71 | st8.spill [in0] = r22, 8 ;; |
87 | st8.spill [in0] = r22, 8 ;; |
| 72 | st8.spill [in0] = r23, 8 ;; |
88 | st8.spill [in0] = r23, 8 ;; |
| 73 | st8.spill [in0] = r24, 8 ;; |
89 | st8.spill [in0] = r24, 8 ;; |
| 74 | st8.spill [in0] = r25, 8 ;; |
90 | st8.spill [in0] = r25, 8 ;; |
| 75 | st8.spill [in0] = r26, 8 ;; |
91 | st8.spill [in0] = r26, 8 ;; |
| 76 | st8.spill [in0] = r27, 8 ;; |
92 | st8.spill [in0] = r27, 8 ;; |
| 77 | st8.spill [in0] = r28, 8 ;; |
93 | st8.spill [in0] = r28, 8 ;; |
| 78 | st8.spill [in0] = r29, 8 ;; |
94 | st8.spill [in0] = r29, 8 ;; |
| 79 | st8.spill [in0] = r30, 8 ;; |
95 | st8.spill [in0] = r30, 8 ;; |
| 80 | st8.spill [in0] = r31, 8 ;; |
96 | st8.spill [in0] = r31, 8 ;; |
| 81 | 97 | ||
| 82 | mov loc3 = ar.unat ;; |
98 | mov loc3 = ar.unat ;; |
| 83 | st8 [loc2] = loc3 /* save ar.unat (callee) */ |
99 | st8 [loc2] = loc3 /* save ar.unat (callee) */ |
| 84 | 100 | ||
| 85 | /* |
101 | /* |
| 86 | * Save branch registers |
102 | * Save branch registers |
| 87 | */ |
103 | */ |
| 88 | mov loc2 = b0 ;; |
104 | mov loc2 = b0 ;; |
| 89 | st8 [in0] = loc2, 8 /* save pc */ |
105 | st8 [in0] = loc2, 8 /* save pc */ |
| 90 | mov loc3 = b1 ;; |
106 | mov loc3 = b1 ;; |
| 91 | st8 [in0] = loc3, 8 |
107 | st8 [in0] = loc3, 8 |
| 92 | mov loc4 = b2 ;; |
108 | mov loc4 = b2 ;; |
| 93 | st8 [in0] = loc4, 8 |
109 | st8 [in0] = loc4, 8 |
| 94 | mov loc5 = b3 ;; |
110 | mov loc5 = b3 ;; |
| 95 | st8 [in0] = loc5, 8 |
111 | st8 [in0] = loc5, 8 |
| 96 | mov loc6 = b4 ;; |
112 | mov loc6 = b4 ;; |
| 97 | st8 [in0] = loc6, 8 |
113 | st8 [in0] = loc6, 8 |
| 98 | mov loc7 = b5 ;; |
114 | mov loc7 = b5 ;; |
| 99 | st8 [in0] = loc7, 8 |
115 | st8 [in0] = loc7, 8 |
| 100 | mov loc8 = b6 ;; |
116 | mov loc8 = b6 ;; |
| 101 | st8 [in0] = loc8, 8 |
117 | st8 [in0] = loc8, 8 |
| 102 | mov loc9 = b7 ;; |
118 | mov loc9 = b7 ;; |
| 103 | st8 [in0] = loc9, 8 |
119 | st8 [in0] = loc9, 8 |
| 104 | 120 | ||
| 105 | /* |
121 | /* |
| 106 | * Save predicate registers |
122 | * Save predicate registers |
| 107 | */ |
123 | */ |
| 108 | mov loc2 = pr ;; |
124 | mov loc2 = pr ;; |
| 109 | st8 [in0] = loc2, 8 |
125 | st8 [in0] = loc2, 8 |
| 110 | 126 | ||
| 111 | mov ar.pfs = loc0 |
127 | mov ar.pfs = loc0 |
| 112 | mov ar.unat = loc1 |
128 | mov ar.unat = loc1 |
| 113 | 129 | ||
| 114 | add r8 = r0, r0, 1 /* context_save returns 1 */ |
130 | add r8 = r0, r0, 1 /* context_save returns 1 */ |
| 115 | br.ret.sptk.many b0 |
131 | br.ret.sptk.many b0 |
| 116 | 132 | ||
| 117 | context_restore: |
133 | context_restore: |
| 118 | alloc loc0 = ar.pfs, 1, 10, 0, 0 ;; |
134 | alloc loc0 = ar.pfs, 1, 11, 0, 0 ;; |
| 119 | 135 | ||
| - | 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 | ||
| 120 | /* |
148 | /* |
| 121 | * TODO: restore the rest of the context registers. |
149 | * Restore application registers |
| 122 | */ |
150 | */ |
| 123 | - | ||
| 124 | ld8 loc0 = [in0], 8 ;; /* load pfs */ |
- | |
| 125 | ld8 loc1 = [in0], 8 ;; /* load unat (caller) */ |
- | |
| 126 | ld8 loc2 = [in0], 8 ;; /* load unat (callee) */ |
- | |
| 127 | - | ||
| 128 | mov ar.unat = loc2 ;; |
151 | mov ar.unat = loc2 ;; |
| - | 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 |
|
| 129 | 158 | ||
| 130 | /* |
159 | /* |
| 131 | * Restore general registers including NaT bits |
160 | * Restore general registers including NaT bits |
| 132 | */ |
161 | */ |
| 133 | ld8.fill r1 = [in0], 8 ;; |
162 | ld8.fill r1 = [in0], 8 ;; |
| 134 | ld8.fill r2 = [in0], 8 ;; |
163 | ld8.fill r2 = [in0], 8 ;; |
| 135 | ld8.fill r3 = [in0], 8 ;; |
164 | ld8.fill r3 = [in0], 8 ;; |
| 136 | ld8.fill r4 = [in0], 8 ;; |
165 | ld8.fill r4 = [in0], 8 ;; |
| 137 | ld8.fill r5 = [in0], 8 ;; |
166 | ld8.fill r5 = [in0], 8 ;; |
| 138 | ld8.fill r6 = [in0], 8 ;; |
167 | ld8.fill r6 = [in0], 8 ;; |
| 139 | ld8.fill r7 = [in0], 8 ;; |
168 | ld8.fill r7 = [in0], 8 ;; |
| 140 | ld8.fill r8 = [in0], 8 ;; |
169 | ld8.fill r8 = [in0], 8 ;; |
| 141 | ld8.fill r9 = [in0], 8 ;; |
170 | ld8.fill r9 = [in0], 8 ;; |
| 142 | ld8.fill r10 = [in0], 8 ;; |
171 | ld8.fill r10 = [in0], 8 ;; |
| 143 | ld8.fill r11 = [in0], 8 ;; |
172 | ld8.fill r11 = [in0], 8 ;; |
| 144 | ld8.fill r12 = [in0], 8 ;; /* restore sp */ |
173 | ld8.fill r12 = [in0], 8 ;; /* restore sp */ |
| 145 | ld8.fill r13 = [in0], 8 ;; |
174 | ld8.fill r13 = [in0], 8 ;; |
| 146 | ld8.fill r14 = [in0], 8 ;; |
175 | ld8.fill r14 = [in0], 8 ;; |
| 147 | ld8.fill r15 = [in0], 8 ;; |
176 | ld8.fill r15 = [in0], 8 ;; |
| 148 | ld8.fill r16 = [in0], 8 ;; |
177 | ld8.fill r16 = [in0], 8 ;; |
| 149 | ld8.fill r17 = [in0], 8 ;; |
178 | ld8.fill r17 = [in0], 8 ;; |
| 150 | ld8.fill r18 = [in0], 8 ;; |
179 | ld8.fill r18 = [in0], 8 ;; |
| 151 | ld8.fill r19 = [in0], 8 ;; |
180 | ld8.fill r19 = [in0], 8 ;; |
| 152 | ld8.fill r20 = [in0], 8 ;; |
181 | ld8.fill r20 = [in0], 8 ;; |
| 153 | ld8.fill r21 = [in0], 8 ;; |
182 | ld8.fill r21 = [in0], 8 ;; |
| 154 | ld8.fill r22 = [in0], 8 ;; |
183 | ld8.fill r22 = [in0], 8 ;; |
| 155 | ld8.fill r23 = [in0], 8 ;; |
184 | ld8.fill r23 = [in0], 8 ;; |
| 156 | ld8.fill r24 = [in0], 8 ;; |
185 | ld8.fill r24 = [in0], 8 ;; |
| 157 | ld8.fill r25 = [in0], 8 ;; |
186 | ld8.fill r25 = [in0], 8 ;; |
| 158 | ld8.fill r26 = [in0], 8 ;; |
187 | ld8.fill r26 = [in0], 8 ;; |
| 159 | ld8.fill r27 = [in0], 8 ;; |
188 | ld8.fill r27 = [in0], 8 ;; |
| 160 | ld8.fill r28 = [in0], 8 ;; |
189 | ld8.fill r28 = [in0], 8 ;; |
| 161 | ld8.fill r29 = [in0], 8 ;; |
190 | ld8.fill r29 = [in0], 8 ;; |
| 162 | ld8.fill r30 = [in0], 8 ;; |
191 | ld8.fill r30 = [in0], 8 ;; |
| 163 | ld8.fill r31 = [in0], 8 ;; |
192 | ld8.fill r31 = [in0], 8 ;; |
| 164 | 193 | ||
| 165 | /* |
194 | /* |
| 166 | * Restore branch registers |
195 | * Restore branch registers |
| 167 | */ |
196 | */ |
| 168 | ld8 loc2 = [in0], 8 ;; /* restore pc */ |
197 | ld8 loc2 = [in0], 8 ;; /* restore pc */ |
| 169 | mov b0 = loc2 |
198 | mov b0 = loc2 |
| 170 | ld8 loc3 = [in0], 8 ;; |
199 | ld8 loc3 = [in0], 8 ;; |
| 171 | mov b1 = loc3 |
200 | mov b1 = loc3 |
| 172 | ld8 loc4 = [in0], 8 ;; |
201 | ld8 loc4 = [in0], 8 ;; |
| 173 | mov b2 = loc4 |
202 | mov b2 = loc4 |
| 174 | ld8 loc5 = [in0], 8 ;; |
203 | ld8 loc5 = [in0], 8 ;; |
| 175 | mov b3 = loc5 |
204 | mov b3 = loc5 |
| 176 | ld8 loc6 = [in0], 8 ;; |
205 | ld8 loc6 = [in0], 8 ;; |
| 177 | mov b4 = loc6 |
206 | mov b4 = loc6 |
| 178 | ld8 loc7 = [in0], 8 ;; |
207 | ld8 loc7 = [in0], 8 ;; |
| 179 | mov b5 = loc7 |
208 | mov b5 = loc7 |
| 180 | ld8 loc8 = [in0], 8 ;; |
209 | ld8 loc8 = [in0], 8 ;; |
| 181 | mov b6 = loc8 |
210 | mov b6 = loc8 |
| 182 | ld8 loc9 = [in0], 8 ;; |
211 | ld8 loc9 = [in0], 8 ;; |
| 183 | mov b7 = loc9 |
212 | mov b7 = loc9 |
| 184 | 213 | ||
| 185 | /* |
214 | /* |
| 186 | * Restore predicate registers |
215 | * Restore predicate registers |
| 187 | */ |
216 | */ |
| 188 | ld8 loc2 = [in0], 8 ;; |
217 | ld8 loc2 = [in0], 8 ;; |
| 189 | mov pr = loc2, ~0 |
218 | mov pr = loc2, ~0 |
| 190 | 219 | ||
| 191 | mov ar.pfs = loc0 |
220 | mov ar.pfs = loc0 |
| 192 | mov ar.unat = loc1 |
221 | mov ar.unat = loc1 |
| 193 | 222 | ||
| 194 | mov r8 = r0 /* context_restore returns 0 */ |
223 | mov r8 = r0 /* context_restore returns 0 */ |
| 195 | br.ret.sptk.many b0 |
224 | br.ret.sptk.many b0 |
| 196 | 225 | ||