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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 __sparc64_CONTEXT_H__ |
29 | #ifndef __sparc64_CONTEXT_H__ |
| 30 | #define __sparc64_CONTEXT_H__ |
30 | #define __sparc64_CONTEXT_H__ |
| 31 | 31 | ||
| - | 32 | #include <arch/stack.h> |
|
| - | 33 | ||
| 32 | #ifndef __sparc64_TYPES_H__ |
34 | #ifndef __sparc64_TYPES_H__ |
| 33 | # include <arch/types.h> |
35 | # include <arch/types.h> |
| 34 | #endif |
36 | #endif |
| 35 | 37 | ||
| 36 | #ifndef __ALIGN_H__ |
38 | #ifndef __ALIGN_H__ |
| 37 | # include <align.h> |
39 | # include <align.h> |
| 38 | #endif |
40 | #endif |
| 39 | 41 | ||
| 40 | /** According to SPARC Compliance Definition, every stack frame is 16-byte aligned. */ |
- | |
| 41 | #define STACK_ALIGNMENT 16 |
- | |
| 42 | - | ||
| 43 | #define STACK_ITEM_SIZE sizeof(__u64) |
- | |
| 44 | - | ||
| 45 | /** |
- | |
| 46 | * 16-extended-word save area for %i[0-7] and %l[0-7] registers. |
- | |
| 47 | */ |
- | |
| 48 | #define SAVE_AREA (16*STACK_ITEM_SIZE) |
- | |
| 49 | #define SP_DELTA SAVE_AREA |
42 | #define SP_DELTA STACK_WINDOW_SAVE_AREA_SIZE |
| 50 | - | ||
| 51 | /** |
- | |
| 52 | * By convention, the actual top of the stack is %sp + BIAS. |
- | |
| 53 | */ |
- | |
| 54 | #define BIAS 2047 |
- | |
| 55 | 43 | ||
| 56 | #ifdef context_set |
44 | #ifdef context_set |
| 57 | #undef context_set |
45 | #undef context_set |
| 58 | #endif |
46 | #endif |
| 59 | 47 | ||
| 60 | #define context_set(c, _pc, stack, size) \ |
48 | #define context_set(c, _pc, stack, size) \ |
| 61 | (c)->pc = ((__address) _pc) - 8; \ |
49 | (c)->pc = ((__address) _pc) - 8; \ |
| 62 | (c)->sp = ((__address) stack) + ALIGN((size), STACK_ALIGNMENT) - (BIAS + SP_DELTA) |
50 | (c)->sp = ((__address) stack) + ALIGN((size), STACK_ALIGNMENT) - (STACK_BIAS + SP_DELTA) |
| 63 | 51 | ||
| 64 | /* |
52 | /* |
| 65 | * Only save registers that must be preserved across |
53 | * Only save registers that must be preserved across |
| 66 | * function calls. |
54 | * function calls. |
| 67 | */ |
55 | */ |
| 68 | struct context { |
56 | struct context { |
| 69 | __u64 l0; |
57 | __u64 l0; |
| 70 | __u64 l1; |
58 | __u64 l1; |
| 71 | __u64 l2; |
59 | __u64 l2; |
| 72 | __u64 l3; |
60 | __u64 l3; |
| 73 | __u64 l4; |
61 | __u64 l4; |
| 74 | __u64 l5; |
62 | __u64 l5; |
| 75 | __u64 l6; |
63 | __u64 l6; |
| 76 | __u64 l7; |
64 | __u64 l7; |
| 77 | __u64 i1; |
65 | __u64 i1; |
| 78 | __u64 i2; |
66 | __u64 i2; |
| 79 | __u64 i3; |
67 | __u64 i3; |
| 80 | __u64 i4; |
68 | __u64 i4; |
| 81 | __u64 i5; |
69 | __u64 i5; |
| 82 | __address sp; /* %i6 */ |
70 | __address sp; /* %i6 */ |
| 83 | __address pc; /* %i7 */ |
71 | __address pc; /* %i7 */ |
| 84 | ipl_t ipl; |
72 | ipl_t ipl; |
| 85 | }; |
73 | }; |
| 86 | 74 | ||
| 87 | #endif |
75 | #endif |
| 88 | 76 | ||