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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 | #include <udebug/udebug.h> |
55 | #include <udebug/udebug.h> |
56 | 56 | ||
57 | /** Print using kernel facility |
57 | /** Print using kernel facility |
58 | * |
58 | * |
59 | * Some simulators can print only through kernel. Userspace can use |
59 | * Some simulators can print only through kernel. Userspace can use |
60 | * this syscall to facilitate it. |
60 | * this syscall to facilitate it. |
61 | */ |
61 | */ |
62 | static unative_t sys_io(int fd, const void * buf, size_t count) |
62 | static unative_t sys_io(int fd, const void * buf, size_t count) |
63 | { |
63 | { |
64 | size_t i; |
64 | size_t i; |
65 | char *data; |
65 | char *data; |
66 | int rc; |
66 | int rc; |
67 | 67 | ||
68 | if (count > PAGE_SIZE) |
68 | if (count > PAGE_SIZE) |
69 | return ELIMIT; |
69 | return ELIMIT; |
70 | 70 | ||
71 | data = (char *) malloc(count, 0); |
71 | data = (char *) malloc(count, 0); |
72 | if (!data) |
72 | if (!data) |
73 | return ENOMEM; |
73 | return ENOMEM; |
74 | 74 | ||
75 | rc = copy_from_uspace(data, buf, count); |
75 | rc = copy_from_uspace(data, buf, count); |
76 | if (rc) { |
76 | if (rc) { |
77 | free(data); |
77 | free(data); |
78 | return rc; |
78 | return rc; |
79 | } |
79 | } |
80 | 80 | ||
81 | for (i = 0; i < count; i++) |
81 | for (i = 0; i < count; i++) |
82 | putchar(data[i]); |
82 | putchar(data[i]); |
83 | free(data); |
83 | free(data); |
84 | 84 | ||
85 | return count; |
85 | return count; |
86 | } |
86 | } |
87 | 87 | ||
88 | /** Tell kernel to get keyboard/console access again */ |
88 | /** Tell kernel to get keyboard/console access again */ |
89 | static unative_t sys_debug_enable_console(void) |
89 | static unative_t sys_debug_enable_console(void) |
90 | { |
90 | { |
91 | arch_grab_console(); |
91 | arch_grab_console(); |
92 | return 0; |
92 | return 0; |
93 | } |
93 | } |
94 | 94 | ||
95 | /** Dispatch system call */ |
95 | /** Dispatch system call */ |
96 | unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3, |
96 | unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3, |
97 | unative_t a4, unative_t a5, unative_t a6, unative_t id) |
97 | unative_t a4, unative_t a5, unative_t a6, unative_t id) |
98 | { |
98 | { |
99 | unative_t rc; |
99 | unative_t rc; |
100 | istate_t fake_state; |
100 | istate_t fake_state; |
101 | 101 | ||
102 | THREAD->uspace_state = &fake_state; |
102 | THREAD->udebug.uspace_state = &fake_state; |
103 | udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false); |
103 | udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false); |
104 | 104 | ||
105 | if (id < SYSCALL_END) { |
105 | if (id < SYSCALL_END) { |
106 | udebug_stoppable_begin(); |
106 | udebug_stoppable_begin(); |
107 | rc = syscall_table[id](a1, a2, a3, a4, a5, a6); |
107 | rc = syscall_table[id](a1, a2, a3, a4, a5, a6); |
108 | } else { |
108 | } else { |
109 | klog_printf("TASK %llu: Unknown syscall id %llx", TASK->taskid, |
109 | klog_printf("TASK %llu: Unknown syscall id %llx", TASK->taskid, |
110 | id); |
110 | id); |
111 | task_kill(TASK->taskid); |
111 | task_kill(TASK->taskid); |
112 | thread_exit(); |
112 | thread_exit(); |
113 | } |
113 | } |
114 | 114 | ||
115 | if (THREAD->interrupted) |
115 | if (THREAD->interrupted) |
116 | thread_exit(); |
116 | thread_exit(); |
117 | 117 | ||
118 | udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true); |
118 | udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true); |
119 | udebug_stoppable_end(); |
119 | udebug_stoppable_end(); |
120 | THREAD->uspace_state = NULL; |
120 | THREAD->udebug.uspace_state = NULL; |
121 | 121 | ||
122 | return rc; |
122 | return rc; |
123 | } |
123 | } |
124 | 124 | ||
125 | syshandler_t syscall_table[SYSCALL_END] = { |
125 | syshandler_t syscall_table[SYSCALL_END] = { |
126 | (syshandler_t) sys_io, |
126 | (syshandler_t) sys_io, |
127 | (syshandler_t) sys_tls_set, |
127 | (syshandler_t) sys_tls_set, |
128 | 128 | ||
129 | /* Thread and task related syscalls. */ |
129 | /* Thread and task related syscalls. */ |
130 | (syshandler_t) sys_thread_create, |
130 | (syshandler_t) sys_thread_create, |
131 | (syshandler_t) sys_thread_exit, |
131 | (syshandler_t) sys_thread_exit, |
132 | (syshandler_t) sys_thread_get_id, |
132 | (syshandler_t) sys_thread_get_id, |
133 | (syshandler_t) sys_task_get_id, |
133 | (syshandler_t) sys_task_get_id, |
134 | 134 | ||
135 | /* Synchronization related syscalls. */ |
135 | /* Synchronization related syscalls. */ |
136 | (syshandler_t) sys_futex_sleep_timeout, |
136 | (syshandler_t) sys_futex_sleep_timeout, |
137 | (syshandler_t) sys_futex_wakeup, |
137 | (syshandler_t) sys_futex_wakeup, |
138 | 138 | ||
139 | /* Address space related syscalls. */ |
139 | /* Address space related syscalls. */ |
140 | (syshandler_t) sys_as_area_create, |
140 | (syshandler_t) sys_as_area_create, |
141 | (syshandler_t) sys_as_area_resize, |
141 | (syshandler_t) sys_as_area_resize, |
142 | (syshandler_t) sys_as_area_destroy, |
142 | (syshandler_t) sys_as_area_destroy, |
143 | 143 | ||
144 | /* IPC related syscalls. */ |
144 | /* IPC related syscalls. */ |
145 | (syshandler_t) sys_ipc_call_sync_fast, |
145 | (syshandler_t) sys_ipc_call_sync_fast, |
146 | (syshandler_t) sys_ipc_call_sync_slow, |
146 | (syshandler_t) sys_ipc_call_sync_slow, |
147 | (syshandler_t) sys_ipc_call_async_fast, |
147 | (syshandler_t) sys_ipc_call_async_fast, |
148 | (syshandler_t) sys_ipc_call_async_slow, |
148 | (syshandler_t) sys_ipc_call_async_slow, |
149 | (syshandler_t) sys_ipc_answer_fast, |
149 | (syshandler_t) sys_ipc_answer_fast, |
150 | (syshandler_t) sys_ipc_answer_slow, |
150 | (syshandler_t) sys_ipc_answer_slow, |
151 | (syshandler_t) sys_ipc_forward_fast, |
151 | (syshandler_t) sys_ipc_forward_fast, |
152 | (syshandler_t) sys_ipc_wait_for_call, |
152 | (syshandler_t) sys_ipc_wait_for_call, |
153 | (syshandler_t) sys_ipc_hangup, |
153 | (syshandler_t) sys_ipc_hangup, |
154 | (syshandler_t) sys_ipc_register_irq, |
154 | (syshandler_t) sys_ipc_register_irq, |
155 | (syshandler_t) sys_ipc_unregister_irq, |
155 | (syshandler_t) sys_ipc_unregister_irq, |
156 | 156 | ||
157 | /* Capabilities related syscalls. */ |
157 | /* Capabilities related syscalls. */ |
158 | (syshandler_t) sys_cap_grant, |
158 | (syshandler_t) sys_cap_grant, |
159 | (syshandler_t) sys_cap_revoke, |
159 | (syshandler_t) sys_cap_revoke, |
160 | 160 | ||
161 | /* DDI related syscalls. */ |
161 | /* DDI related syscalls. */ |
162 | (syshandler_t) sys_physmem_map, |
162 | (syshandler_t) sys_physmem_map, |
163 | (syshandler_t) sys_iospace_enable, |
163 | (syshandler_t) sys_iospace_enable, |
164 | (syshandler_t) sys_preempt_control, |
164 | (syshandler_t) sys_preempt_control, |
165 | 165 | ||
166 | /* Sysinfo syscalls */ |
166 | /* Sysinfo syscalls */ |
167 | (syshandler_t) sys_sysinfo_valid, |
167 | (syshandler_t) sys_sysinfo_valid, |
168 | (syshandler_t) sys_sysinfo_value, |
168 | (syshandler_t) sys_sysinfo_value, |
169 | 169 | ||
170 | /* Debug calls */ |
170 | /* Debug calls */ |
171 | (syshandler_t) sys_debug_enable_console, |
171 | (syshandler_t) sys_debug_enable_console, |
172 | 172 | ||
173 | (syshandler_t) sys_ipc_connect_kbox |
173 | (syshandler_t) sys_ipc_connect_kbox |
174 | }; |
174 | }; |
175 | 175 | ||
176 | /** @} |
176 | /** @} |
177 | */ |
177 | */ |
178 | 178 |