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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Martin Decky |
2 | * Copyright (C) 2005 Martin Decky |
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 generic |
29 | /** @addtogroup generic |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | /** |
33 | /** |
34 | * @file |
34 | * @file |
35 | * @brief Syscall table and syscall wrappers. |
35 | * @brief Syscall table and syscall wrappers. |
36 | */ |
36 | */ |
37 | 37 | ||
38 | #include <syscall/syscall.h> |
38 | #include <syscall/syscall.h> |
39 | #include <proc/thread.h> |
39 | #include <proc/thread.h> |
40 | #include <proc/task.h> |
40 | #include <proc/task.h> |
41 | #include <mm/as.h> |
41 | #include <mm/as.h> |
42 | #include <print.h> |
42 | #include <print.h> |
43 | #include <putchar.h> |
43 | #include <putchar.h> |
44 | #include <errno.h> |
44 | #include <errno.h> |
45 | #include <arch.h> |
45 | #include <arch.h> |
46 | #include <debug.h> |
46 | #include <debug.h> |
47 | #include <ipc/sysipc.h> |
47 | #include <ipc/sysipc.h> |
48 | #include <synch/futex.h> |
48 | #include <synch/futex.h> |
49 | #include <ddi/ddi.h> |
49 | #include <ddi/ddi.h> |
50 | #include <security/cap.h> |
50 | #include <security/cap.h> |
51 | #include <syscall/copy.h> |
51 | #include <syscall/copy.h> |
52 | #include <sysinfo/sysinfo.h> |
52 | #include <sysinfo/sysinfo.h> |
53 | #include <console/console.h> |
53 | #include <console/console.h> |
54 | #include <console/klog.h> |
54 | #include <console/klog.h> |
55 | 55 | ||
56 | /** Print using kernel facility |
56 | /** Print using kernel facility |
57 | * |
57 | * |
58 | * Some simulators can print only through kernel. Userspace can use |
58 | * Some simulators can print only through kernel. Userspace can use |
59 | * this syscall to facilitate it. |
59 | * this syscall to facilitate it. |
60 | */ |
60 | */ |
61 | static __native sys_io(int fd, const void * buf, size_t count) |
61 | static unative_t sys_io(int fd, const void * buf, size_t count) |
62 | { |
62 | { |
63 | size_t i; |
63 | size_t i; |
64 | char *data; |
64 | char *data; |
65 | int rc; |
65 | int rc; |
66 | 66 | ||
67 | if (count > PAGE_SIZE) |
67 | if (count > PAGE_SIZE) |
68 | return ELIMIT; |
68 | return ELIMIT; |
69 | 69 | ||
70 | data = malloc(count, 0); |
70 | data = malloc(count, 0); |
71 | if (!data) |
71 | if (!data) |
72 | return ENOMEM; |
72 | return ENOMEM; |
73 | 73 | ||
74 | rc = copy_from_uspace(data, buf, count); |
74 | rc = copy_from_uspace(data, buf, count); |
75 | if (rc) { |
75 | if (rc) { |
76 | free(data); |
76 | free(data); |
77 | return rc; |
77 | return rc; |
78 | } |
78 | } |
79 | 79 | ||
80 | for (i = 0; i < count; i++) |
80 | for (i = 0; i < count; i++) |
81 | putchar(data[i]); |
81 | putchar(data[i]); |
82 | free(data); |
82 | free(data); |
83 | 83 | ||
84 | return count; |
84 | return count; |
85 | } |
85 | } |
86 | 86 | ||
87 | /** Tell kernel to get keyboard/console access again */ |
87 | /** Tell kernel to get keyboard/console access again */ |
88 | static __native sys_debug_enable_console(void) |
88 | static unative_t sys_debug_enable_console(void) |
89 | { |
89 | { |
90 | arch_grab_console(); |
90 | arch_grab_console(); |
91 | return 0; |
91 | return 0; |
92 | } |
92 | } |
93 | 93 | ||
94 | /** Dispatch system call */ |
94 | /** Dispatch system call */ |
95 | __native syscall_handler(__native a1, __native a2, __native a3, |
95 | unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3, |
96 | __native a4, __native id) |
96 | unative_t a4, unative_t id) |
97 | { |
97 | { |
98 | __native rc; |
98 | unative_t rc; |
99 | 99 | ||
100 | if (id < SYSCALL_END) |
100 | if (id < SYSCALL_END) |
101 | rc = syscall_table[id](a1,a2,a3,a4); |
101 | rc = syscall_table[id](a1,a2,a3,a4); |
102 | else { |
102 | else { |
103 | klog_printf("TASK %lld: Unknown syscall id %d",TASK->taskid,id); |
103 | klog_printf("TASK %lld: Unknown syscall id %d",TASK->taskid,id); |
104 | task_kill(TASK->taskid); |
104 | task_kill(TASK->taskid); |
105 | thread_exit(); |
105 | thread_exit(); |
106 | } |
106 | } |
107 | 107 | ||
108 | if (THREAD->interrupted) |
108 | if (THREAD->interrupted) |
109 | thread_exit(); |
109 | thread_exit(); |
110 | 110 | ||
111 | return rc; |
111 | return rc; |
112 | } |
112 | } |
113 | 113 | ||
114 | syshandler_t syscall_table[SYSCALL_END] = { |
114 | syshandler_t syscall_table[SYSCALL_END] = { |
115 | sys_io, |
115 | sys_io, |
116 | sys_tls_set, |
116 | sys_tls_set, |
117 | 117 | ||
118 | /* Thread and task related syscalls. */ |
118 | /* Thread and task related syscalls. */ |
119 | sys_thread_create, |
119 | sys_thread_create, |
120 | sys_thread_exit, |
120 | sys_thread_exit, |
121 | sys_task_get_id, |
121 | sys_task_get_id, |
122 | 122 | ||
123 | /* Synchronization related syscalls. */ |
123 | /* Synchronization related syscalls. */ |
124 | sys_futex_sleep_timeout, |
124 | sys_futex_sleep_timeout, |
125 | sys_futex_wakeup, |
125 | sys_futex_wakeup, |
126 | 126 | ||
127 | /* Address space related syscalls. */ |
127 | /* Address space related syscalls. */ |
128 | sys_as_area_create, |
128 | sys_as_area_create, |
129 | sys_as_area_resize, |
129 | sys_as_area_resize, |
130 | sys_as_area_destroy, |
130 | sys_as_area_destroy, |
131 | 131 | ||
132 | /* IPC related syscalls. */ |
132 | /* IPC related syscalls. */ |
133 | sys_ipc_call_sync_fast, |
133 | sys_ipc_call_sync_fast, |
134 | sys_ipc_call_sync, |
134 | sys_ipc_call_sync, |
135 | sys_ipc_call_async_fast, |
135 | sys_ipc_call_async_fast, |
136 | sys_ipc_call_async, |
136 | sys_ipc_call_async, |
137 | sys_ipc_answer_fast, |
137 | sys_ipc_answer_fast, |
138 | sys_ipc_answer, |
138 | sys_ipc_answer, |
139 | sys_ipc_forward_fast, |
139 | sys_ipc_forward_fast, |
140 | sys_ipc_wait_for_call, |
140 | sys_ipc_wait_for_call, |
141 | sys_ipc_hangup, |
141 | sys_ipc_hangup, |
142 | sys_ipc_register_irq, |
142 | sys_ipc_register_irq, |
143 | sys_ipc_unregister_irq, |
143 | sys_ipc_unregister_irq, |
144 | 144 | ||
145 | /* Capabilities related syscalls. */ |
145 | /* Capabilities related syscalls. */ |
146 | sys_cap_grant, |
146 | sys_cap_grant, |
147 | sys_cap_revoke, |
147 | sys_cap_revoke, |
148 | 148 | ||
149 | /* DDI related syscalls. */ |
149 | /* DDI related syscalls. */ |
150 | sys_physmem_map, |
150 | sys_physmem_map, |
151 | sys_iospace_enable, |
151 | sys_iospace_enable, |
152 | sys_preempt_control, |
152 | sys_preempt_control, |
153 | 153 | ||
154 | /* Sysinfo syscalls */ |
154 | /* Sysinfo syscalls */ |
155 | sys_sysinfo_valid, |
155 | sys_sysinfo_valid, |
156 | sys_sysinfo_value, |
156 | sys_sysinfo_value, |
157 | 157 | ||
158 | /* Debug calls */ |
158 | /* Debug calls */ |
159 | sys_debug_enable_console |
159 | sys_debug_enable_console |
160 | }; |
160 | }; |
161 | 161 | ||
162 | /** @} |
162 | /** @} |
163 | */ |
163 | */ |
164 | 164 | ||
165 | 165 |