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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 <proc/program.h> |
41 | #include <proc/program.h> |
42 | #include <mm/as.h> |
42 | #include <mm/as.h> |
43 | #include <print.h> |
43 | #include <print.h> |
44 | #include <arch.h> |
44 | #include <arch.h> |
45 | #include <debug.h> |
45 | #include <debug.h> |
46 | #include <ddi/device.h> |
46 | #include <ddi/device.h> |
47 | #include <ipc/sysipc.h> |
47 | #include <ipc/sysipc.h> |
48 | #include <synch/futex.h> |
48 | #include <synch/futex.h> |
49 | #include <synch/smc.h> |
49 | #include <synch/smc.h> |
50 | #include <ddi/ddi.h> |
50 | #include <ddi/ddi.h> |
51 | #include <ipc/event.h> |
51 | #include <ipc/event.h> |
52 | #include <security/cap.h> |
52 | #include <security/cap.h> |
53 | #include <sysinfo/sysinfo.h> |
53 | #include <sysinfo/sysinfo.h> |
54 | #include <console/console.h> |
54 | #include <console/console.h> |
55 | #include <udebug/udebug.h> |
55 | #include <udebug/udebug.h> |
56 | 56 | ||
57 | /** Dispatch system call */ |
57 | /** Dispatch system call */ |
58 | unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3, |
58 | unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3, |
59 | unative_t a4, unative_t a5, unative_t a6, unative_t id) |
59 | unative_t a4, unative_t a5, unative_t a6, unative_t id) |
60 | { |
60 | { |
61 | unative_t rc; |
61 | unative_t rc; |
62 | 62 | ||
63 | #ifdef CONFIG_UDEBUG |
63 | #ifdef CONFIG_UDEBUG |
- | 64 | bool debug; |
|
- | 65 | ||
- | 66 | /* |
|
- | 67 | * Early check for undebugged tasks. We do not lock anything as this |
|
- | 68 | * test need not be precise in either way. |
|
- | 69 | */ |
|
- | 70 | debug = THREAD->udebug.active; |
|
- | 71 | ||
- | 72 | if (debug) { |
|
64 | udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false); |
73 | udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false); |
- | 74 | } |
|
65 | #endif |
75 | #endif |
66 | 76 | ||
67 | if (id < SYSCALL_END) { |
77 | if (id < SYSCALL_END) { |
68 | rc = syscall_table[id](a1, a2, a3, a4, a5, a6); |
78 | rc = syscall_table[id](a1, a2, a3, a4, a5, a6); |
69 | } else { |
79 | } else { |
70 | printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id); |
80 | printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id); |
71 | task_kill(TASK->taskid); |
81 | task_kill(TASK->taskid); |
72 | thread_exit(); |
82 | thread_exit(); |
73 | } |
83 | } |
74 | 84 | ||
75 | if (THREAD->interrupted) |
85 | if (THREAD->interrupted) |
76 | thread_exit(); |
86 | thread_exit(); |
77 | 87 | ||
78 | #ifdef CONFIG_UDEBUG |
88 | #ifdef CONFIG_UDEBUG |
- | 89 | if (debug) { |
|
79 | udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true); |
90 | udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true); |
80 | 91 | ||
81 | /* |
92 | /* |
82 | * Stopping point needed for tasks that only invoke non-blocking |
93 | * Stopping point needed for tasks that only invoke |
83 | * system calls. |
94 | * non-blocking system calls. Not needed if the task |
- | 95 | * is not being debugged (it cannot block here). |
|
84 | */ |
96 | */ |
85 | udebug_stoppable_begin(); |
97 | udebug_stoppable_begin(); |
86 | udebug_stoppable_end(); |
98 | udebug_stoppable_end(); |
- | 99 | } |
|
87 | #endif |
100 | #endif |
88 | 101 | ||
89 | return rc; |
102 | return rc; |
90 | } |
103 | } |
91 | 104 | ||
92 | syshandler_t syscall_table[SYSCALL_END] = { |
105 | syshandler_t syscall_table[SYSCALL_END] = { |
93 | (syshandler_t) sys_klog, |
106 | (syshandler_t) sys_klog, |
94 | (syshandler_t) sys_tls_set, |
107 | (syshandler_t) sys_tls_set, |
95 | 108 | ||
96 | /* Thread and task related syscalls. */ |
109 | /* Thread and task related syscalls. */ |
97 | (syshandler_t) sys_thread_create, |
110 | (syshandler_t) sys_thread_create, |
98 | (syshandler_t) sys_thread_exit, |
111 | (syshandler_t) sys_thread_exit, |
99 | (syshandler_t) sys_thread_get_id, |
112 | (syshandler_t) sys_thread_get_id, |
100 | 113 | ||
101 | (syshandler_t) sys_task_get_id, |
114 | (syshandler_t) sys_task_get_id, |
102 | (syshandler_t) sys_task_set_name, |
115 | (syshandler_t) sys_task_set_name, |
103 | (syshandler_t) sys_program_spawn_loader, |
116 | (syshandler_t) sys_program_spawn_loader, |
104 | 117 | ||
105 | /* Synchronization related syscalls. */ |
118 | /* Synchronization related syscalls. */ |
106 | (syshandler_t) sys_futex_sleep_timeout, |
119 | (syshandler_t) sys_futex_sleep_timeout, |
107 | (syshandler_t) sys_futex_wakeup, |
120 | (syshandler_t) sys_futex_wakeup, |
108 | (syshandler_t) sys_smc_coherence, |
121 | (syshandler_t) sys_smc_coherence, |
109 | 122 | ||
110 | /* Address space related syscalls. */ |
123 | /* Address space related syscalls. */ |
111 | (syshandler_t) sys_as_area_create, |
124 | (syshandler_t) sys_as_area_create, |
112 | (syshandler_t) sys_as_area_resize, |
125 | (syshandler_t) sys_as_area_resize, |
113 | (syshandler_t) sys_as_area_change_flags, |
126 | (syshandler_t) sys_as_area_change_flags, |
114 | (syshandler_t) sys_as_area_destroy, |
127 | (syshandler_t) sys_as_area_destroy, |
115 | 128 | ||
116 | /* IPC related syscalls. */ |
129 | /* IPC related syscalls. */ |
117 | (syshandler_t) sys_ipc_call_sync_fast, |
130 | (syshandler_t) sys_ipc_call_sync_fast, |
118 | (syshandler_t) sys_ipc_call_sync_slow, |
131 | (syshandler_t) sys_ipc_call_sync_slow, |
119 | (syshandler_t) sys_ipc_call_async_fast, |
132 | (syshandler_t) sys_ipc_call_async_fast, |
120 | (syshandler_t) sys_ipc_call_async_slow, |
133 | (syshandler_t) sys_ipc_call_async_slow, |
121 | (syshandler_t) sys_ipc_answer_fast, |
134 | (syshandler_t) sys_ipc_answer_fast, |
122 | (syshandler_t) sys_ipc_answer_slow, |
135 | (syshandler_t) sys_ipc_answer_slow, |
123 | (syshandler_t) sys_ipc_forward_fast, |
136 | (syshandler_t) sys_ipc_forward_fast, |
124 | (syshandler_t) sys_ipc_forward_slow, |
137 | (syshandler_t) sys_ipc_forward_slow, |
125 | (syshandler_t) sys_ipc_wait_for_call, |
138 | (syshandler_t) sys_ipc_wait_for_call, |
126 | (syshandler_t) sys_ipc_hangup, |
139 | (syshandler_t) sys_ipc_hangup, |
127 | (syshandler_t) sys_ipc_register_irq, |
140 | (syshandler_t) sys_ipc_register_irq, |
128 | (syshandler_t) sys_ipc_unregister_irq, |
141 | (syshandler_t) sys_ipc_unregister_irq, |
129 | 142 | ||
130 | /* Event notification syscalls. */ |
143 | /* Event notification syscalls. */ |
131 | (syshandler_t) sys_event_subscribe, |
144 | (syshandler_t) sys_event_subscribe, |
132 | 145 | ||
133 | /* Capabilities related syscalls. */ |
146 | /* Capabilities related syscalls. */ |
134 | (syshandler_t) sys_cap_grant, |
147 | (syshandler_t) sys_cap_grant, |
135 | (syshandler_t) sys_cap_revoke, |
148 | (syshandler_t) sys_cap_revoke, |
136 | 149 | ||
137 | /* DDI related syscalls. */ |
150 | /* DDI related syscalls. */ |
138 | (syshandler_t) sys_device_assign_devno, |
151 | (syshandler_t) sys_device_assign_devno, |
139 | (syshandler_t) sys_physmem_map, |
152 | (syshandler_t) sys_physmem_map, |
140 | (syshandler_t) sys_iospace_enable, |
153 | (syshandler_t) sys_iospace_enable, |
141 | (syshandler_t) sys_preempt_control, |
154 | (syshandler_t) sys_preempt_control, |
142 | 155 | ||
143 | /* Sysinfo syscalls */ |
156 | /* Sysinfo syscalls */ |
144 | (syshandler_t) sys_sysinfo_valid, |
157 | (syshandler_t) sys_sysinfo_valid, |
145 | (syshandler_t) sys_sysinfo_value, |
158 | (syshandler_t) sys_sysinfo_value, |
146 | 159 | ||
147 | /* Debug calls */ |
160 | /* Debug calls */ |
148 | (syshandler_t) sys_debug_enable_console, |
161 | (syshandler_t) sys_debug_enable_console, |
149 | (syshandler_t) sys_debug_disable_console, |
162 | (syshandler_t) sys_debug_disable_console, |
150 | 163 | ||
151 | (syshandler_t) sys_ipc_connect_kbox |
164 | (syshandler_t) sys_ipc_connect_kbox |
152 | }; |
165 | }; |
153 | 166 | ||
154 | /** @} |
167 | /** @} |
155 | */ |
168 | */ |
156 | 169 |