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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 | #ifndef __ia64_CONTEXT_H__ |
29 | #ifndef __ia64_CONTEXT_H__ |
30 | #define __ia64_CONTEXT_H__ |
30 | #define __ia64_CONTEXT_H__ |
31 | 31 | ||
32 | #include <arch/types.h> |
32 | #include <arch/types.h> |
33 | 33 | ||
- | 34 | #define STACK_ITEM_SIZE 16 |
|
- | 35 | ||
34 | /* |
36 | /* |
35 | * context_save() and context_restore() are both leaf procedures. |
37 | * context_save() and context_restore() are both leaf procedures. |
36 | * No need to allocate scratch area. |
38 | * No need to allocate scratch area. |
- | 39 | * |
|
- | 40 | * One item is put onto the stack to support get_stack_base(). |
|
37 | */ |
41 | */ |
38 | #define SP_DELTA 0 |
42 | #define SP_DELTA (0+STACK_ITEM_SIZE) |
39 | 43 | ||
40 | #ifdef context_set |
44 | #ifdef context_set |
41 | #undef context_set |
45 | #undef context_set |
42 | #endif |
46 | #endif |
43 | 47 | ||
44 | #define context_set(c, _pc, stack, size) \ |
48 | #define context_set(c, _pc, stack, size) \ |
45 | (c)->pc = (__address) _pc; \ |
49 | (c)->pc = (__address) _pc; \ |
46 | (c)->bsp = ((__address) stack) + (sizeof(the_t)); \ |
50 | (c)->bsp = ((__address) stack) + (sizeof(the_t)); \ |
47 | (c)->sp = ((__address) stack) + (size) - SP_DELTA; |
51 | (c)->sp = ((__address) stack) + (size) - SP_DELTA; |
48 | 52 | ||
49 | struct context { |
53 | struct context { |
50 | 54 | ||
51 | /* |
55 | /* |
52 | * Application registers |
56 | * Application registers |
53 | */ |
57 | */ |
54 | __u64 ar_pfs; |
58 | __u64 ar_pfs; |
55 | __u64 ar_unat_caller; |
59 | __u64 ar_unat_caller; |
56 | __u64 ar_unat_callee; |
60 | __u64 ar_unat_callee; |
57 | __u64 ar_rsc; |
61 | __u64 ar_rsc; |
58 | __u64 bsp; /* ar_bsp */ |
62 | __u64 bsp; /* ar_bsp */ |
59 | __u64 ar_rnat; |
63 | __u64 ar_rnat; |
60 | __u64 ar_lc; |
64 | __u64 ar_lc; |
61 | __u64 ar_ec; |
65 | __u64 ar_ec; |
62 | __u64 ar_ccv; |
66 | __u64 ar_ccv; |
63 | __u64 ar_csd; |
67 | __u64 ar_csd; |
64 | __u64 ar_ssd; |
68 | __u64 ar_ssd; |
65 | 69 | ||
66 | /* |
70 | /* |
67 | * General registers |
71 | * General registers |
68 | */ |
72 | */ |
69 | __u64 r1; |
73 | __u64 r1; |
70 | __u64 r2; |
74 | __u64 r2; |
71 | __u64 r3; |
75 | __u64 r3; |
72 | __u64 r4; |
76 | __u64 r4; |
73 | __u64 r5; |
77 | __u64 r5; |
74 | __u64 r6; |
78 | __u64 r6; |
75 | __u64 r7; |
79 | __u64 r7; |
76 | __u64 r8; |
80 | __u64 r8; |
77 | __u64 r9; |
81 | __u64 r9; |
78 | __u64 r10; |
82 | __u64 r10; |
79 | __u64 r11; |
83 | __u64 r11; |
80 | __u64 sp; /* r12 */ |
84 | __u64 sp; /* r12 */ |
81 | __u64 r13; |
85 | __u64 r13; |
82 | __u64 r14; |
86 | __u64 r14; |
83 | __u64 r15; |
87 | __u64 r15; |
84 | __u64 r16; |
88 | __u64 r16; |
85 | __u64 r17; |
89 | __u64 r17; |
86 | __u64 r18; |
90 | __u64 r18; |
87 | __u64 r19; |
91 | __u64 r19; |
88 | __u64 r20; |
92 | __u64 r20; |
89 | __u64 r21; |
93 | __u64 r21; |
90 | __u64 r22; |
94 | __u64 r22; |
91 | __u64 r23; |
95 | __u64 r23; |
92 | __u64 r24; |
96 | __u64 r24; |
93 | __u64 r25; |
97 | __u64 r25; |
94 | __u64 r26; |
98 | __u64 r26; |
95 | __u64 r27; |
99 | __u64 r27; |
96 | __u64 r28; |
100 | __u64 r28; |
97 | __u64 r29; |
101 | __u64 r29; |
98 | __u64 r30; |
102 | __u64 r30; |
99 | __u64 r31; |
103 | __u64 r31; |
100 | 104 | ||
101 | /* |
105 | /* |
102 | * Branch registers |
106 | * Branch registers |
103 | */ |
107 | */ |
104 | __u64 pc; /* b0 */ |
108 | __u64 pc; /* b0 */ |
105 | __u64 b1; |
109 | __u64 b1; |
106 | __u64 b2; |
110 | __u64 b2; |
107 | __u64 b3; |
111 | __u64 b3; |
108 | __u64 b4; |
112 | __u64 b4; |
109 | __u64 b5; |
113 | __u64 b5; |
110 | __u64 b6; |
114 | __u64 b6; |
111 | __u64 b7; |
115 | __u64 b7; |
112 | 116 | ||
113 | /* |
117 | /* |
114 | * Predicate registers |
118 | * Predicate registers |
115 | */ |
119 | */ |
116 | __u64 pr; |
120 | __u64 pr; |
117 | 121 | ||
118 | pri_t pri; |
122 | pri_t pri; |
119 | } __attribute__ ((packed)); |
123 | } __attribute__ ((packed)); |
120 | 124 | ||
121 | #endif |
125 | #endif |
122 | 126 |