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