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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 | /** @addtogroup libcia64 |
29 | /** @addtogroup libcia64 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef LIBC_ia64_FIBRIL_H_ |
35 | #ifndef LIBC_ia64_FIBRIL_H_ |
36 | #define LIBC_ia64_FIBRIL_H_ |
36 | #define LIBC_ia64_FIBRIL_H_ |
37 | 37 | ||
38 | #include <sys/types.h> |
38 | #include <sys/types.h> |
39 | #include <align.h> |
39 | #include <align.h> |
40 | #include <libarch/stack.h> |
40 | #include <libarch/stack.h> |
41 | #include <libarch/types.h> |
41 | #include <libarch/types.h> |
42 | 42 | ||
43 | /* |
43 | /* |
44 | * context_save() and context_restore() are both leaf procedures. |
44 | * context_save() and context_restore() are both leaf procedures. |
45 | * No need to allocate scratch area. |
45 | * No need to allocate scratch area. |
46 | */ |
46 | */ |
47 | #define SP_DELTA (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT)) |
47 | #define SP_DELTA (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT)) |
48 | 48 | ||
49 | #define PFM_MASK (~0x3fffffffff) |
49 | #define PFM_MASK (~0x3fffffffff) |
50 | 50 | ||
51 | #define PSTHREAD_INITIAL_STACK_PAGES_NO 2 |
51 | #define PSTHREAD_INITIAL_STACK_PAGES_NO 2 |
52 | /* Stack is divided into two equal parts (for memory stack and register stack). */ |
52 | /* Stack is divided into two equal parts (for memory stack and register stack). */ |
53 | #define PSTHREAD_INITIAL_STACK_DIVISION 2 |
53 | #define PSTHREAD_INITIAL_STACK_DIVISION 2 |
54 | 54 | ||
55 | #ifdef context_set |
55 | #ifdef context_set |
56 | #undef context_set |
56 | #undef context_set |
57 | #endif |
57 | #endif |
58 | 58 | ||
59 | #define context_set(c, _pc, stack, size, tls) \ |
59 | #define context_set(c, _pc, stack, size, tls) \ |
60 | do { \ |
60 | do { \ |
61 | (c)->pc = (uint64_t) _pc; \ |
61 | (c)->pc = (uint64_t) _pc; \ |
62 | (c)->bsp = ((uint64_t) stack) + size / PSTHREAD_INITIAL_STACK_DIVISION; \ |
62 | (c)->bsp = ((uint64_t) stack) + size / PSTHREAD_INITIAL_STACK_DIVISION; \ |
63 | (c)->ar_pfs &= PFM_MASK; \ |
63 | (c)->ar_pfs &= PFM_MASK; \ |
64 | (c)->sp = ((uint64_t) stack) + ALIGN_UP((size / PSTHREAD_INITIAL_STACK_DIVISION), STACK_ALIGNMENT) - SP_DELTA; \ |
64 | (c)->sp = ((uint64_t) stack) + ALIGN_UP((size / PSTHREAD_INITIAL_STACK_DIVISION), STACK_ALIGNMENT) - SP_DELTA; \ |
65 | (c)->tp = (uint64_t) tls; \ |
65 | (c)->tp = (uint64_t) tls; \ |
66 | } while (0); |
66 | } while (0); |
67 | 67 | ||
68 | 68 | ||
69 | /* |
69 | /* |
70 | * Only save registers that must be preserved across |
70 | * Only save registers that must be preserved across |
71 | * function calls. |
71 | * function calls. |
72 | */ |
72 | */ |
73 | typedef struct context { |
73 | typedef struct context { |
74 | 74 | ||
75 | /* |
75 | /* |
76 | * Application registers |
76 | * Application registers |
77 | */ |
77 | */ |
78 | uint64_t ar_pfs; |
78 | uint64_t ar_pfs; |
79 | uint64_t ar_unat_caller; |
79 | uint64_t ar_unat_caller; |
80 | uint64_t ar_unat_callee; |
80 | uint64_t ar_unat_callee; |
81 | uint64_t ar_rsc; |
81 | uint64_t ar_rsc; |
82 | uint64_t bsp; /* ar_bsp */ |
82 | uint64_t bsp; /* ar_bsp */ |
83 | uint64_t ar_rnat; |
83 | uint64_t ar_rnat; |
84 | uint64_t ar_lc; |
84 | uint64_t ar_lc; |
85 | 85 | ||
86 | /* |
86 | /* |
87 | * General registers |
87 | * General registers |
88 | */ |
88 | */ |
89 | uint64_t r1; |
89 | uint64_t r1; |
90 | uint64_t r4; |
90 | uint64_t r4; |
91 | uint64_t r5; |
91 | uint64_t r5; |
92 | uint64_t r6; |
92 | uint64_t r6; |
93 | uint64_t r7; |
93 | uint64_t r7; |
94 | uint64_t sp; /* r12 */ |
94 | uint64_t sp; /* r12 */ |
95 | uint64_t tp; /* r13 */ |
95 | uint64_t tp; /* r13 */ |
96 | 96 | ||
97 | /* |
97 | /* |
98 | * Branch registers |
98 | * Branch registers |
99 | */ |
99 | */ |
100 | uint64_t pc; /* b0 */ |
100 | uint64_t pc; /* b0 */ |
101 | uint64_t b1; |
101 | uint64_t b1; |
102 | uint64_t b2; |
102 | uint64_t b2; |
103 | uint64_t b3; |
103 | uint64_t b3; |
104 | uint64_t b4; |
104 | uint64_t b4; |
105 | uint64_t b5; |
105 | uint64_t b5; |
106 | 106 | ||
107 | /* |
107 | /* |
108 | * Predicate registers |
108 | * Predicate registers |
109 | */ |
109 | */ |
110 | uint64_t pr; |
110 | uint64_t pr; |
111 | 111 | ||
112 | __r128 f2 __attribute__ ((aligned(16))); |
112 | __r128 f2 __attribute__ ((aligned(16))); |
113 | __r128 f3; |
113 | __r128 f3; |
114 | __r128 f4; |
114 | __r128 f4; |
115 | __r128 f5; |
115 | __r128 f5; |
116 | 116 | ||
117 | __r128 f16; |
117 | __r128 f16; |
118 | __r128 f17; |
118 | __r128 f17; |
119 | __r128 f18; |
119 | __r128 f18; |
120 | __r128 f19; |
120 | __r128 f19; |
121 | __r128 f20; |
121 | __r128 f20; |
122 | __r128 f21; |
122 | __r128 f21; |
123 | __r128 f22; |
123 | __r128 f22; |
124 | __r128 f23; |
124 | __r128 f23; |
125 | __r128 f24; |
125 | __r128 f24; |
126 | __r128 f25; |
126 | __r128 f25; |
127 | __r128 f26; |
127 | __r128 f26; |
128 | __r128 f27; |
128 | __r128 f27; |
129 | __r128 f28; |
129 | __r128 f28; |
130 | __r128 f29; |
130 | __r128 f29; |
131 | __r128 f30; |
131 | __r128 f30; |
132 | __r128 f31; |
132 | __r128 f31; |
133 | 133 | ||
134 | } context_t; |
134 | } context_t; |
135 | 135 | ||
136 | #endif |
136 | #endif |
137 | 137 | ||
138 | /** @} |
138 | /** @} |
139 | */ |
139 | */ |
140 | 140 |