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447 | decky | 1 | /* |
1065 | jermar | 2 | * Copyright (C) 2006 Jakub Jermar |
447 | decky | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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1653 | cejka | 27 | */ |
28 | |||
29 | /** @addtogroup libc |
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30 | * @{ |
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31 | */ |
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32 | /** @file |
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447 | decky | 33 | */ |
34 | |||
1065 | jermar | 35 | #include <thread.h> |
447 | decky | 36 | #include <libc.h> |
1079 | jermar | 37 | #include <stdlib.h> |
1065 | jermar | 38 | #include <arch/faddr.h> |
1079 | jermar | 39 | #include <kernel/proc/uarg.h> |
1113 | palkovsky | 40 | #include <psthread.h> |
1129 | palkovsky | 41 | #include <string.h> |
1392 | palkovsky | 42 | #include <async.h> |
447 | decky | 43 | |
1113 | palkovsky | 44 | #include <stdio.h> |
1129 | palkovsky | 45 | |
1167 | vana | 46 | |
47 | #ifndef THREAD_INITIAL_STACK_PAGES_NO |
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48 | #define THREAD_INITIAL_STACK_PAGES_NO 1 |
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49 | #endif |
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50 | |||
1427 | palkovsky | 51 | static LIST_INITIALIZE(thread_garbage); |
1167 | vana | 52 | |
1129 | palkovsky | 53 | extern char _tdata_start; |
54 | extern char _tdata_end; |
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55 | extern char _tbss_start; |
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56 | extern char _tbss_end; |
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57 | |||
58 | /** Create Thread Local storage area, return pointer to TCB(ThreadControlBlock) |
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59 | * |
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60 | * !! The code requires, that sections .tdata and .tbss are adjacent. |
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61 | * It may be changed in the future. |
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62 | */ |
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63 | tcb_t * __make_tls(void) |
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1113 | palkovsky | 64 | { |
1129 | palkovsky | 65 | void *data; |
66 | tcb_t *tcb; |
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67 | size_t tls_size = &_tbss_end - &_tdata_start; |
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68 | |||
69 | tcb = __alloc_tls(&data, tls_size); |
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70 | |||
71 | memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start); |
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1614 | palkovsky | 72 | memset(data + (&_tbss_start-&_tdata_start), 0, &_tbss_end-&_tbss_start); |
1129 | palkovsky | 73 | return tcb; |
1113 | palkovsky | 74 | } |
75 | |||
1129 | palkovsky | 76 | void __free_tls(tcb_t *tcb) |
1113 | palkovsky | 77 | { |
1129 | palkovsky | 78 | size_t tls_size = &_tbss_end - &_tdata_start; |
79 | __free_tls_arch(tcb, tls_size); |
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1113 | palkovsky | 80 | } |
81 | |||
1081 | jermar | 82 | /** Main thread function. |
83 | * |
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84 | * This function is called from __thread_entry() and is used |
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85 | * to call the thread's implementing function and perform cleanup |
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86 | * and exit when thread returns back. Do not call this function |
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87 | * directly. |
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88 | * |
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89 | * @param uarg Pointer to userspace argument structure. |
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1392 | palkovsky | 90 | * |
91 | * TODO: Thread stack pages memory leak |
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1081 | jermar | 92 | */ |
1113 | palkovsky | 93 | void __thread_main(uspace_arg_t *uarg) |
1079 | jermar | 94 | { |
1392 | palkovsky | 95 | psthread_data_t *pt; |
1113 | palkovsky | 96 | |
1392 | palkovsky | 97 | pt = psthread_setup(); |
98 | __tcb_set(pt->tcb); |
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99 | |||
1079 | jermar | 100 | uarg->uspace_thread_function(uarg->uspace_thread_arg); |
101 | free(uarg->uspace_stack); |
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102 | free(uarg); |
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1113 | palkovsky | 103 | |
1407 | palkovsky | 104 | /* If there is a manager, destroy it */ |
1392 | palkovsky | 105 | async_destroy_manager(); |
106 | psthread_teardown(pt); |
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1113 | palkovsky | 107 | |
1079 | jermar | 108 | thread_exit(0); |
109 | } |
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1065 | jermar | 110 | |
1081 | jermar | 111 | /** Create userspace thread. |
112 | * |
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113 | * This function creates new userspace thread and allocates userspace |
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114 | * stack and userspace argument structure for it. |
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115 | * |
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116 | * @param function Function implementing the thread. |
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117 | * @param arg Argument to be passed to thread. |
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118 | * @param name Symbolic name of the thread. |
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119 | * |
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120 | * @param TID of the new thread on success or -1 on failure. |
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121 | */ |
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1079 | jermar | 122 | int thread_create(void (* function)(void *), void *arg, char *name) |
1065 | jermar | 123 | { |
1079 | jermar | 124 | char *stack; |
125 | uspace_arg_t *uarg; |
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126 | |||
1167 | vana | 127 | stack = (char *) malloc(getpagesize()*THREAD_INITIAL_STACK_PAGES_NO); |
1079 | jermar | 128 | if (!stack) |
129 | return -1; |
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130 | |||
131 | uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t)); |
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132 | if (!uarg) { |
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133 | free(stack); |
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134 | return -1; |
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135 | } |
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1081 | jermar | 136 | |
1079 | jermar | 137 | uarg->uspace_entry = (void *) FADDR(__thread_entry); |
138 | uarg->uspace_stack = (void *) stack; |
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1081 | jermar | 139 | uarg->uspace_thread_function = function; |
1079 | jermar | 140 | uarg->uspace_thread_arg = arg; |
141 | uarg->uspace_uarg = uarg; |
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142 | |||
143 | return __SYSCALL2(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name); |
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713 | decky | 144 | } |
145 | |||
1081 | jermar | 146 | /** Terminate current thread. |
147 | * |
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148 | * @param stat Exit status. Currently not used. |
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149 | */ |
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1065 | jermar | 150 | void thread_exit(int status) |
151 | { |
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152 | __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status); |
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447 | decky | 153 | } |
1427 | palkovsky | 154 | |
1653 | cejka | 155 | |
156 | |||
157 | /** @} |
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158 | */ |
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159 | |||
160 |