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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 __LIBC__ia64PSTHREAD_H__ |
29 | #ifndef __LIBC__ia64PSTHREAD_H__ |
30 | #define __LIBC__ia64PSTHREAD_H__ |
30 | #define __LIBC__ia64PSTHREAD_H__ |
31 | 31 | ||
32 | #include <types.h> |
32 | #include <types.h> |
33 | #include <align.h> |
33 | #include <align.h> |
34 | #include <libarch/stack.h> |
34 | #include <libarch/stack.h> |
35 | 35 | ||
36 | /* |
36 | /* |
37 | * context_save() and context_restore() are both leaf procedures. |
37 | * context_save() and context_restore() are both leaf procedures. |
38 | * No need to allocate scratch area. |
38 | * No need to allocate scratch area. |
39 | */ |
39 | */ |
40 | #define SP_DELTA (0+ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT)) |
40 | #define SP_DELTA (0+ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT)) |
41 | 41 | ||
42 | #define PFM_MASK (~0x3fffffffff) |
42 | #define PFM_MASK (~0x3fffffffff) |
43 | 43 | ||
44 | #define PSTHREAD_INITIAL_STACK_PAGES_NO 2 |
44 | #define PSTHREAD_INITIAL_STACK_PAGES_NO 2 |
45 | #define PSTHREAD_INITIAL_STACK_DIVISION 2 /*Stack is divided into two equal parts (for clasic stack and register stack)*/ |
45 | /* Stack is divided into two equal parts (for memory stack and register stack). */ |
46 | - | ||
- | 46 | #define PSTHREAD_INITIAL_STACK_DIVISION 2 |
|
47 | 47 | ||
48 | #ifdef context_set |
48 | #ifdef context_set |
49 | #undef context_set |
49 | #undef context_set |
50 | #endif |
50 | #endif |
51 | 51 | ||
52 | #define context_set(c, _pc, stack, size, tls) \ |
52 | #define context_set(c, _pc, stack, size, tls) \ |
53 | do { \ |
53 | do { \ |
54 | (c)->pc = (uint64_t) _pc; \ |
54 | (c)->pc = (uint64_t) _pc; \ |
55 | (c)->bsp = ((uint64_t) stack) + size / PSTHREAD_INITIAL_STACK_DIVISION; \ |
55 | (c)->bsp = ((uint64_t) stack) + size / PSTHREAD_INITIAL_STACK_DIVISION; \ |
56 | (c)->ar_pfs &= PFM_MASK; \ |
56 | (c)->ar_pfs &= PFM_MASK; \ |
57 | (c)->sp = ((uint64_t) stack) + ALIGN_UP((size / PSTHREAD_INITIAL_STACK_DIVISION), STACK_ALIGNMENT) - SP_DELTA; \ |
57 | (c)->sp = ((uint64_t) stack) + ALIGN_UP((size / PSTHREAD_INITIAL_STACK_DIVISION), STACK_ALIGNMENT) - SP_DELTA; \ |
58 | (c)->tp = (uint64_t) tls; \ |
58 | (c)->tp = (uint64_t) tls; \ |
59 | } while (0); |
59 | } while (0); |
60 | 60 | ||
61 | 61 | ||
62 | /* |
62 | /* |
63 | * Only save registers that must be preserved across |
63 | * Only save registers that must be preserved across |
64 | * function calls. |
64 | * function calls. |
65 | */ |
65 | */ |
66 | typedef struct context { |
66 | typedef struct context { |
67 | 67 | ||
68 | /* |
68 | /* |
69 | * Application registers |
69 | * Application registers |
70 | */ |
70 | */ |
71 | uint64_t ar_pfs; |
71 | uint64_t ar_pfs; |
72 | uint64_t ar_unat_caller; |
72 | uint64_t ar_unat_caller; |
73 | uint64_t ar_unat_callee; |
73 | uint64_t ar_unat_callee; |
74 | uint64_t ar_rsc; |
74 | uint64_t ar_rsc; |
75 | uint64_t bsp; /* ar_bsp */ |
75 | uint64_t bsp; /* ar_bsp */ |
76 | uint64_t ar_rnat; |
76 | uint64_t ar_rnat; |
77 | uint64_t ar_lc; |
77 | uint64_t ar_lc; |
78 | 78 | ||
79 | /* |
79 | /* |
80 | * General registers |
80 | * General registers |
81 | */ |
81 | */ |
82 | uint64_t r1; |
82 | uint64_t r1; |
83 | uint64_t r4; |
83 | uint64_t r4; |
84 | uint64_t r5; |
84 | uint64_t r5; |
85 | uint64_t r6; |
85 | uint64_t r6; |
86 | uint64_t r7; |
86 | uint64_t r7; |
87 | uint64_t sp; /* r12 */ |
87 | uint64_t sp; /* r12 */ |
88 | uint64_t tp; /* r13 */ |
88 | uint64_t tp; /* r13 */ |
89 | 89 | ||
90 | /* |
90 | /* |
91 | * Branch registers |
91 | * Branch registers |
92 | */ |
92 | */ |
93 | uint64_t pc; /* b0 */ |
93 | uint64_t pc; /* b0 */ |
94 | uint64_t b1; |
94 | uint64_t b1; |
95 | uint64_t b2; |
95 | uint64_t b2; |
96 | uint64_t b3; |
96 | uint64_t b3; |
97 | uint64_t b4; |
97 | uint64_t b4; |
98 | uint64_t b5; |
98 | uint64_t b5; |
99 | 99 | ||
100 | /* |
100 | /* |
101 | * Predicate registers |
101 | * Predicate registers |
102 | */ |
102 | */ |
103 | uint64_t pr; |
103 | uint64_t pr; |
104 | } context_t; |
104 | } context_t; |
105 | 105 | ||
106 | #endif |
106 | #endif |
107 | 107 |