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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Jakub Jermar |
2 | * Copyright (C) 2006 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 libc |
29 | /** @addtogroup libc |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <thread.h> |
35 | #include <thread.h> |
36 | #include <libc.h> |
36 | #include <libc.h> |
37 | #include <stdlib.h> |
37 | #include <stdlib.h> |
38 | #include <arch/faddr.h> |
38 | #include <arch/faddr.h> |
39 | #include <kernel/proc/uarg.h> |
39 | #include <kernel/proc/uarg.h> |
40 | #include <psthread.h> |
40 | #include <psthread.h> |
41 | #include <string.h> |
41 | #include <string.h> |
42 | #include <async.h> |
42 | #include <async.h> |
43 | 43 | ||
44 | #include <stdio.h> |
44 | #include <stdio.h> |
45 | 45 | ||
46 | 46 | ||
47 | #ifndef THREAD_INITIAL_STACK_PAGES_NO |
47 | #ifndef THREAD_INITIAL_STACK_PAGES_NO |
48 | #define THREAD_INITIAL_STACK_PAGES_NO 1 |
48 | #define THREAD_INITIAL_STACK_PAGES_NO 1 |
49 | #endif |
49 | #endif |
50 | 50 | ||
51 | static LIST_INITIALIZE(thread_garbage); |
51 | static LIST_INITIALIZE(thread_garbage); |
52 | 52 | ||
53 | extern char _tdata_start; |
53 | extern char _tdata_start; |
54 | extern char _tdata_end; |
54 | extern char _tdata_end; |
55 | extern char _tbss_start; |
55 | extern char _tbss_start; |
56 | extern char _tbss_end; |
56 | extern char _tbss_end; |
57 | 57 | ||
58 | /** Create Thread Local storage area, return pointer to TCB(ThreadControlBlock) |
58 | /** Create Thread Local storage area, return pointer to TCB(ThreadControlBlock) |
59 | * |
59 | * |
60 | * !! The code requires, that sections .tdata and .tbss are adjacent. |
60 | * !! The code requires, that sections .tdata and .tbss are adjacent. |
61 | * It may be changed in the future. |
61 | * It may be changed in the future. |
62 | */ |
62 | */ |
63 | tcb_t * __make_tls(void) |
63 | tcb_t * __make_tls(void) |
64 | { |
64 | { |
65 | void *data; |
65 | void *data; |
66 | tcb_t *tcb; |
66 | tcb_t *tcb; |
67 | size_t tls_size = &_tbss_end - &_tdata_start; |
67 | size_t tls_size = &_tbss_end - &_tdata_start; |
68 | 68 | ||
69 | tcb = __alloc_tls(&data, tls_size); |
69 | tcb = __alloc_tls(&data, tls_size); |
70 | 70 | ||
71 | memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start); |
71 | memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start); |
72 | memset(data + (&_tbss_start-&_tdata_start), 0, &_tbss_end-&_tbss_start); |
72 | memset(data + (&_tbss_start-&_tdata_start), 0, &_tbss_end-&_tbss_start); |
73 | return tcb; |
73 | return tcb; |
74 | } |
74 | } |
75 | 75 | ||
76 | void __free_tls(tcb_t *tcb) |
76 | void __free_tls(tcb_t *tcb) |
77 | { |
77 | { |
78 | size_t tls_size = &_tbss_end - &_tdata_start; |
78 | size_t tls_size = &_tbss_end - &_tdata_start; |
79 | __free_tls_arch(tcb, tls_size); |
79 | __free_tls_arch(tcb, tls_size); |
80 | } |
80 | } |
81 | 81 | ||
82 | /** Main thread function. |
82 | /** Main thread function. |
83 | * |
83 | * |
84 | * This function is called from __thread_entry() and is used |
84 | * This function is called from __thread_entry() and is used |
85 | * to call the thread's implementing function and perform cleanup |
85 | * to call the thread's implementing function and perform cleanup |
86 | * and exit when thread returns back. Do not call this function |
86 | * and exit when thread returns back. Do not call this function |
87 | * directly. |
87 | * directly. |
88 | * |
88 | * |
89 | * @param uarg Pointer to userspace argument structure. |
89 | * @param uarg Pointer to userspace argument structure. |
90 | * |
90 | * |
91 | * TODO: Thread stack pages memory leak |
91 | * TODO: Thread stack pages memory leak |
92 | */ |
92 | */ |
93 | void __thread_main(uspace_arg_t *uarg) |
93 | void __thread_main(uspace_arg_t *uarg) |
94 | { |
94 | { |
95 | psthread_data_t *pt; |
95 | psthread_data_t *pt; |
96 | 96 | ||
97 | pt = psthread_setup(); |
97 | pt = psthread_setup(); |
98 | __tcb_set(pt->tcb); |
98 | __tcb_set(pt->tcb); |
99 | 99 | ||
100 | uarg->uspace_thread_function(uarg->uspace_thread_arg); |
100 | uarg->uspace_thread_function(uarg->uspace_thread_arg); |
101 | free(uarg->uspace_stack); |
101 | free(uarg->uspace_stack); |
102 | free(uarg); |
102 | free(uarg); |
103 | 103 | ||
104 | /* If there is a manager, destroy it */ |
104 | /* If there is a manager, destroy it */ |
105 | async_destroy_manager(); |
105 | async_destroy_manager(); |
106 | psthread_teardown(pt); |
106 | psthread_teardown(pt); |
107 | 107 | ||
108 | thread_exit(0); |
108 | thread_exit(0); |
109 | } |
109 | } |
110 | 110 | ||
111 | /** Create userspace thread. |
111 | /** Create userspace thread. |
112 | * |
112 | * |
113 | * This function creates new userspace thread and allocates userspace |
113 | * This function creates new userspace thread and allocates userspace |
114 | * stack and userspace argument structure for it. |
114 | * stack and userspace argument structure for it. |
115 | * |
115 | * |
116 | * @param function Function implementing the thread. |
116 | * @param function Function implementing the thread. |
117 | * @param arg Argument to be passed to thread. |
117 | * @param arg Argument to be passed to thread. |
118 | * @param name Symbolic name of the thread. |
118 | * @param name Symbolic name of the thread. |
119 | * |
119 | * |
120 | * @param TID of the new thread on success or -1 on failure. |
120 | * @param TID of the new thread on success or -1 on failure. |
121 | */ |
121 | */ |
122 | int thread_create(void (* function)(void *), void *arg, char *name) |
122 | int thread_create(void (* function)(void *), void *arg, char *name) |
123 | { |
123 | { |
124 | char *stack; |
124 | char *stack; |
125 | uspace_arg_t *uarg; |
125 | uspace_arg_t *uarg; |
126 | 126 | ||
127 | stack = (char *) malloc(getpagesize()*THREAD_INITIAL_STACK_PAGES_NO); |
127 | stack = (char *) malloc(getpagesize()*THREAD_INITIAL_STACK_PAGES_NO); |
128 | if (!stack) |
128 | if (!stack) |
129 | return -1; |
129 | return -1; |
130 | 130 | ||
131 | uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t)); |
131 | uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t)); |
132 | if (!uarg) { |
132 | if (!uarg) { |
133 | free(stack); |
133 | free(stack); |
134 | return -1; |
134 | return -1; |
135 | } |
135 | } |
136 | 136 | ||
137 | uarg->uspace_entry = (void *) FADDR(__thread_entry); |
137 | uarg->uspace_entry = (void *) FADDR(__thread_entry); |
138 | uarg->uspace_stack = (void *) stack; |
138 | uarg->uspace_stack = (void *) stack; |
139 | uarg->uspace_thread_function = function; |
139 | uarg->uspace_thread_function = function; |
140 | uarg->uspace_thread_arg = arg; |
140 | uarg->uspace_thread_arg = arg; |
141 | uarg->uspace_uarg = uarg; |
141 | uarg->uspace_uarg = uarg; |
142 | 142 | ||
143 | return __SYSCALL2(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name); |
143 | return __SYSCALL2(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name); |
144 | } |
144 | } |
145 | 145 | ||
146 | /** Terminate current thread. |
146 | /** Terminate current thread. |
147 | * |
147 | * |
148 | * @param stat Exit status. Currently not used. |
148 | * @param stat Exit status. Currently not used. |
149 | */ |
149 | */ |
150 | void thread_exit(int status) |
150 | void thread_exit(int status) |
151 | { |
151 | { |
152 | __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status); |
152 | __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status); |
153 | } |
153 | } |
154 | 154 | ||
155 | 155 | ||
156 | 156 | ||
157 | /** @} |
157 | /** @} |
158 | */ |
158 | */ |
159 | 159 | ||
160 | 160 | ||
161 | 161 |