Rev 965 | Rev 998 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1 | jermar | 1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
||
3 | * All rights reserved. |
||
4 | * |
||
5 | * Redistribution and use in source and binary forms, with or without |
||
6 | * modification, are permitted provided that the following conditions |
||
7 | * are met: |
||
8 | * |
||
9 | * - Redistributions of source code must retain the above copyright |
||
10 | * notice, this list of conditions and the following disclaimer. |
||
11 | * - Redistributions in binary form must reproduce the above copyright |
||
12 | * notice, this list of conditions and the following disclaimer in the |
||
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 |
||
15 | * derived from this software without specific prior written permission. |
||
16 | * |
||
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 |
||
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
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 |
||
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 |
||
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
27 | */ |
||
28 | |||
973 | palkovsky | 29 | #include <main/uinit.h> |
1 | jermar | 30 | #include <proc/thread.h> |
31 | #include <proc/task.h> |
||
703 | jermar | 32 | #include <mm/as.h> |
814 | palkovsky | 33 | #include <mm/slab.h> |
1 | jermar | 34 | |
35 | #include <synch/spinlock.h> |
||
36 | #include <arch.h> |
||
37 | #include <panic.h> |
||
788 | jermar | 38 | #include <adt/list.h> |
955 | palkovsky | 39 | #include <ipc/ipc.h> |
965 | palkovsky | 40 | #include <ipc/ns.h> |
955 | palkovsky | 41 | #include <memstr.h> |
1 | jermar | 42 | |
973 | palkovsky | 43 | #include <elf.h> |
44 | |||
623 | jermar | 45 | SPINLOCK_INITIALIZE(tasks_lock); |
624 | jermar | 46 | LIST_INITIALIZE(tasks_head); |
1 | jermar | 47 | |
107 | decky | 48 | /** Initialize tasks |
49 | * |
||
50 | * Initialize kernel tasks support. |
||
51 | * |
||
52 | */ |
||
1 | jermar | 53 | void task_init(void) |
54 | { |
||
15 | jermar | 55 | TASK = NULL; |
1 | jermar | 56 | } |
57 | |||
107 | decky | 58 | |
59 | /** Create new task |
||
60 | * |
||
61 | * Create new task with no threads. |
||
62 | * |
||
703 | jermar | 63 | * @param as Task's address space. |
107 | decky | 64 | * |
973 | palkovsky | 65 | * @return New task's structure |
107 | decky | 66 | * |
67 | */ |
||
703 | jermar | 68 | task_t *task_create(as_t *as) |
1 | jermar | 69 | { |
413 | jermar | 70 | ipl_t ipl; |
1 | jermar | 71 | task_t *ta; |
72 | |||
822 | palkovsky | 73 | ta = (task_t *) malloc(sizeof(task_t), 0); |
74 | |||
75 | spinlock_initialize(&ta->lock, "task_ta_lock"); |
||
76 | list_initialize(&ta->th_head); |
||
77 | list_initialize(&ta->tasks_link); |
||
78 | ta->as = as; |
||
955 | palkovsky | 79 | |
80 | ipc_answerbox_init(&ta->answerbox); |
||
81 | memsetb((__address)&ta->phones, sizeof(ta->phones[0])*IPC_MAX_PHONES, 0); |
||
965 | palkovsky | 82 | if (ipc_phone_0) |
83 | ipc_phone_init(&ta->phones[0], ipc_phone_0); |
||
822 | palkovsky | 84 | |
85 | ipl = interrupts_disable(); |
||
86 | spinlock_lock(&tasks_lock); |
||
87 | list_append(&ta->tasks_link, &tasks_head); |
||
88 | spinlock_unlock(&tasks_lock); |
||
89 | interrupts_restore(ipl); |
||
90 | |||
1 | jermar | 91 | return ta; |
92 | } |
||
93 | |||
973 | palkovsky | 94 | /** Create new task with 1 thread and run it |
95 | * |
||
96 | * @return Task of the running program or NULL on error |
||
97 | */ |
||
98 | task_t * task_run_program(void *program_addr) |
||
99 | { |
||
100 | as_t *as; |
||
101 | as_area_t *a; |
||
102 | int rc; |
||
103 | thread_t *t; |
||
104 | task_t *task; |
||
105 | |||
106 | as = as_create(0); |
||
107 | |||
108 | rc = elf_load((elf_header_t *) config.init_addr, as); |
||
109 | if (rc != EE_OK) { |
||
110 | as_free(as); |
||
111 | return NULL; |
||
112 | } |
||
113 | |||
114 | task = task_create(as); |
||
115 | t = thread_create(uinit, (void *)((elf_header_t *) config.init_addr)->e_entry, |
||
116 | task, THREAD_USER_STACK); |
||
117 | |||
118 | /* |
||
119 | * Create the data as_area. |
||
120 | */ |
||
121 | a = as_area_create(as, AS_AREA_STACK, 1, USTACK_ADDRESS); |
||
122 | |||
123 | thread_ready(t); |
||
124 | |||
125 | return task; |
||
126 | } |