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| Rev | Author | Line No. | Line |
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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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| 27 | */ |
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| 28 | |||
| 1065 | jermar | 29 | #include <thread.h> |
| 447 | decky | 30 | #include <libc.h> |
| 1079 | jermar | 31 | #include <stdlib.h> |
| 1065 | jermar | 32 | #include <arch/faddr.h> |
| 1079 | jermar | 33 | #include <kernel/proc/uarg.h> |
| 1113 | palkovsky | 34 | #include <psthread.h> |
| 447 | decky | 35 | |
| 1113 | palkovsky | 36 | #include <stdio.h> |
| 37 | void * __make_tls(void) |
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| 38 | { |
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| 39 | psthread_data_t *pt; |
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| 40 | |||
| 41 | pt = malloc(sizeof(psthread_data_t)); |
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| 42 | pt->self = pt; |
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| 43 | |||
| 44 | return pt; |
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| 45 | } |
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| 46 | |||
| 47 | void __free_tls(void *tls) |
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| 48 | { |
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| 49 | free(tls); |
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| 50 | } |
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| 51 | |||
| 1081 | jermar | 52 | /** Main thread function. |
| 53 | * |
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| 54 | * This function is called from __thread_entry() and is used |
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| 55 | * to call the thread's implementing function and perform cleanup |
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| 56 | * and exit when thread returns back. Do not call this function |
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| 57 | * directly. |
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| 58 | * |
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| 59 | * @param uarg Pointer to userspace argument structure. |
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| 60 | */ |
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| 1113 | palkovsky | 61 | void __thread_main(uspace_arg_t *uarg) |
| 1079 | jermar | 62 | { |
| 1113 | palkovsky | 63 | /* This should initialize the area according to TLS specicification */ |
| 64 | __tls_set(__make_tls()); |
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| 65 | |||
| 1079 | jermar | 66 | uarg->uspace_thread_function(uarg->uspace_thread_arg); |
| 67 | free(uarg->uspace_stack); |
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| 68 | free(uarg); |
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| 1113 | palkovsky | 69 | |
| 70 | __free_tls(__tls_get()); |
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| 71 | |||
| 1079 | jermar | 72 | thread_exit(0); |
| 73 | } |
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| 1065 | jermar | 74 | |
| 1081 | jermar | 75 | /** Create userspace thread. |
| 76 | * |
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| 77 | * This function creates new userspace thread and allocates userspace |
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| 78 | * stack and userspace argument structure for it. |
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| 79 | * |
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| 80 | * @param function Function implementing the thread. |
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| 81 | * @param arg Argument to be passed to thread. |
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| 82 | * @param name Symbolic name of the thread. |
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| 83 | * |
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| 84 | * @param TID of the new thread on success or -1 on failure. |
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| 85 | */ |
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| 1079 | jermar | 86 | int thread_create(void (* function)(void *), void *arg, char *name) |
| 1065 | jermar | 87 | { |
| 1079 | jermar | 88 | char *stack; |
| 89 | uspace_arg_t *uarg; |
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| 90 | |||
| 91 | stack = (char *) malloc(getpagesize()); |
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| 92 | if (!stack) |
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| 93 | return -1; |
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| 94 | |||
| 95 | uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t)); |
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| 96 | if (!uarg) { |
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| 97 | free(stack); |
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| 98 | return -1; |
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| 99 | } |
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| 1081 | jermar | 100 | |
| 1079 | jermar | 101 | uarg->uspace_entry = (void *) FADDR(__thread_entry); |
| 102 | uarg->uspace_stack = (void *) stack; |
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| 1081 | jermar | 103 | uarg->uspace_thread_function = function; |
| 1079 | jermar | 104 | uarg->uspace_thread_arg = arg; |
| 105 | uarg->uspace_uarg = uarg; |
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| 106 | |||
| 107 | return __SYSCALL2(SYS_THREAD_CREATE, (sysarg_t) uarg, (sysarg_t) name); |
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| 713 | decky | 108 | } |
| 109 | |||
| 1081 | jermar | 110 | /** Terminate current thread. |
| 111 | * |
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| 112 | * @param stat Exit status. Currently not used. |
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| 113 | */ |
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| 1065 | jermar | 114 | void thread_exit(int status) |
| 115 | { |
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| 116 | __SYSCALL1(SYS_THREAD_EXIT, (sysarg_t) status); |
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| 447 | decky | 117 | } |