Rev 2071 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 2071 | Rev 2083 | ||
---|---|---|---|
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 | /** @addtogroup ia64 |
29 | /** @addtogroup ia64 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_ia64_CONTEXT_H_ |
35 | #ifndef KERN_ia64_CONTEXT_H_ |
36 | #define KERN_ia64_CONTEXT_H_ |
36 | #define KERN_ia64_CONTEXT_H_ |
37 | 37 | ||
38 | #include <arch/types.h> |
38 | #include <arch/types.h> |
39 | #include <arch/register.h> |
39 | #include <arch/register.h> |
40 | #include <typedefs.h> |
40 | #include <typedefs.h> |
41 | #include <align.h> |
41 | #include <align.h> |
42 | #include <arch/stack.h> |
42 | #include <arch/stack.h> |
43 | 43 | ||
44 | /* |
44 | /* |
45 | * context_save_arch() and context_restore_arch() are both leaf procedures. |
45 | * context_save_arch() and context_restore_arch() are both leaf procedures. |
46 | * No need to allocate scratch area. |
46 | * No need to allocate scratch area. |
47 | * |
47 | * |
48 | * One item is put onto the stack to support get_stack_base(). |
48 | * One item is put onto the stack to support get_stack_base(). |
49 | */ |
49 | */ |
50 | #define SP_DELTA (0+ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT)) |
50 | #define SP_DELTA (0+ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT)) |
51 | 51 | ||
52 | #ifdef context_set |
52 | #ifdef context_set |
53 | #undef context_set |
53 | #undef context_set |
54 | #endif |
54 | #endif |
55 | 55 | ||
56 | /* RSE stack starts at the bottom of memory stack. */ |
56 | /* RSE stack starts at the bottom of memory stack. */ |
57 | #define context_set(c, _pc, stack, size) \ |
57 | #define context_set(c, _pc, stack, size) \ |
58 | do { \ |
58 | do { \ |
59 | (c)->pc = (uintptr_t) _pc; \ |
59 | (c)->pc = (uintptr_t) _pc; \ |
60 | (c)->bsp = ((uintptr_t) stack) + ALIGN_UP((size), REGISTER_STACK_ALIGNMENT); \ |
60 | (c)->bsp = ((uintptr_t) stack) + ALIGN_UP((size), REGISTER_STACK_ALIGNMENT); \ |
61 | (c)->ar_pfs &= PFM_MASK; \ |
61 | (c)->ar_pfs &= PFM_MASK; \ |
62 | (c)->sp = ((uintptr_t) stack) + ALIGN_UP((size), STACK_ALIGNMENT) - SP_DELTA; \ |
62 | (c)->sp = ((uintptr_t) stack) + ALIGN_UP((size), STACK_ALIGNMENT) - SP_DELTA; \ |
63 | } while (0); |
63 | } while (0); |
64 | 64 | ||
65 | /* |
65 | /* |
66 | * Only save registers that must be preserved across |
66 | * Only save registers that must be preserved across |
67 | * function calls. |
67 | * function calls. |
68 | */ |
68 | */ |
69 | struct context { |
69 | typedef struct { |
70 | 70 | ||
71 | /* |
71 | /* |
72 | * Application registers |
72 | * Application registers |
73 | */ |
73 | */ |
74 | uint64_t ar_pfs; |
74 | uint64_t ar_pfs; |
75 | uint64_t ar_unat_caller; |
75 | uint64_t ar_unat_caller; |
76 | uint64_t ar_unat_callee; |
76 | uint64_t ar_unat_callee; |
77 | uint64_t ar_rsc; |
77 | uint64_t ar_rsc; |
78 | uintptr_t bsp; /* ar_bsp */ |
78 | uintptr_t bsp; /* ar_bsp */ |
79 | uint64_t ar_rnat; |
79 | uint64_t ar_rnat; |
80 | uint64_t ar_lc; |
80 | uint64_t ar_lc; |
81 | 81 | ||
82 | /* |
82 | /* |
83 | * General registers |
83 | * General registers |
84 | */ |
84 | */ |
85 | uint64_t r1; |
85 | uint64_t r1; |
86 | uint64_t r4; |
86 | uint64_t r4; |
87 | uint64_t r5; |
87 | uint64_t r5; |
88 | uint64_t r6; |
88 | uint64_t r6; |
89 | uint64_t r7; |
89 | uint64_t r7; |
90 | uintptr_t sp; /* r12 */ |
90 | uintptr_t sp; /* r12 */ |
91 | uint64_t r13; |
91 | uint64_t r13; |
92 | 92 | ||
93 | /* |
93 | /* |
94 | * Branch registers |
94 | * Branch registers |
95 | */ |
95 | */ |
96 | uintptr_t pc; /* b0 */ |
96 | uintptr_t pc; /* b0 */ |
97 | uint64_t b1; |
97 | uint64_t b1; |
98 | uint64_t b2; |
98 | uint64_t b2; |
99 | uint64_t b3; |
99 | uint64_t b3; |
100 | uint64_t b4; |
100 | uint64_t b4; |
101 | uint64_t b5; |
101 | uint64_t b5; |
102 | 102 | ||
103 | /* |
103 | /* |
104 | * Predicate registers |
104 | * Predicate registers |
105 | */ |
105 | */ |
106 | uint64_t pr; |
106 | uint64_t pr; |
107 | 107 | ||
108 | __r128 f2 __attribute__ ((aligned(16))); |
108 | __r128 f2 __attribute__ ((aligned(16))); |
109 | __r128 f3; |
109 | __r128 f3; |
110 | __r128 f4; |
110 | __r128 f4; |
111 | __r128 f5; |
111 | __r128 f5; |
112 | 112 | ||
113 | __r128 f16; |
113 | __r128 f16; |
114 | __r128 f17; |
114 | __r128 f17; |
115 | __r128 f18; |
115 | __r128 f18; |
116 | __r128 f19; |
116 | __r128 f19; |
117 | __r128 f20; |
117 | __r128 f20; |
118 | __r128 f21; |
118 | __r128 f21; |
119 | __r128 f22; |
119 | __r128 f22; |
120 | __r128 f23; |
120 | __r128 f23; |
121 | __r128 f24; |
121 | __r128 f24; |
122 | __r128 f25; |
122 | __r128 f25; |
123 | __r128 f26; |
123 | __r128 f26; |
124 | __r128 f27; |
124 | __r128 f27; |
125 | __r128 f28; |
125 | __r128 f28; |
126 | __r128 f29; |
126 | __r128 f29; |
127 | __r128 f30; |
127 | __r128 f30; |
128 | __r128 f31; |
128 | __r128 f31; |
129 | 129 | ||
130 | ipl_t ipl; |
130 | ipl_t ipl; |
131 | }; |
131 | } context_t; |
132 | 132 | ||
133 | #endif |
133 | #endif |
134 | 134 | ||
135 | /** @} |
135 | /** @} |
136 | */ |
136 | */ |
137 | 137 |