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662 | decky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2005 Martin Decky |
662 | decky | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
1862 | jermar | 29 | /** @addtogroup generic |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | |||
1264 | jermar | 33 | /** |
1702 | cejka | 34 | * @file |
1264 | jermar | 35 | * @brief Syscall table and syscall wrappers. |
36 | */ |
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37 | |||
678 | decky | 38 | #include <syscall/syscall.h> |
714 | decky | 39 | #include <proc/thread.h> |
1118 | jermar | 40 | #include <proc/task.h> |
3222 | svoboda | 41 | #include <proc/program.h> |
977 | jermar | 42 | #include <mm/as.h> |
712 | decky | 43 | #include <print.h> |
44 | #include <putchar.h> |
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955 | palkovsky | 45 | #include <errno.h> |
46 | #include <arch.h> |
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47 | #include <debug.h> |
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1027 | palkovsky | 48 | #include <ipc/sysipc.h> |
1109 | jermar | 49 | #include <synch/futex.h> |
3222 | svoboda | 50 | #include <synch/smc.h> |
1178 | jermar | 51 | #include <ddi/ddi.h> |
1297 | jermar | 52 | #include <security/cap.h> |
1293 | palkovsky | 53 | #include <syscall/copy.h> |
1318 | vana | 54 | #include <sysinfo/sysinfo.h> |
1474 | palkovsky | 55 | #include <console/console.h> |
3492 | rimsky | 56 | #include <udebug/udebug.h> |
662 | decky | 57 | |
1448 | palkovsky | 58 | /** Print using kernel facility |
59 | * |
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3064 | decky | 60 | * Print to kernel log. |
61 | * |
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1448 | palkovsky | 62 | */ |
3113 | decky | 63 | static unative_t sys_klog(int fd, const void * buf, size_t count) |
1386 | palkovsky | 64 | { |
1448 | palkovsky | 65 | size_t i; |
66 | char *data; |
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67 | int rc; |
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1386 | palkovsky | 68 | |
1448 | palkovsky | 69 | if (count > PAGE_SIZE) |
70 | return ELIMIT; |
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712 | decky | 71 | |
3097 | decky | 72 | if (count > 0) { |
73 | data = (char *) malloc(count, 0); |
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74 | if (!data) |
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75 | return ENOMEM; |
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76 | |||
77 | rc = copy_from_uspace(data, buf, count); |
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78 | if (rc) { |
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79 | free(data); |
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80 | return rc; |
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81 | } |
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82 | |||
83 | for (i = 0; i < count; i++) |
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84 | putchar(data[i]); |
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1448 | palkovsky | 85 | free(data); |
3097 | decky | 86 | } else |
87 | klog_update(); |
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712 | decky | 88 | |
1386 | palkovsky | 89 | return count; |
662 | decky | 90 | } |
91 | |||
1474 | palkovsky | 92 | /** Tell kernel to get keyboard/console access again */ |
1780 | jermar | 93 | static unative_t sys_debug_enable_console(void) |
1474 | palkovsky | 94 | { |
95 | arch_grab_console(); |
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96 | return 0; |
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97 | } |
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98 | |||
1100 | palkovsky | 99 | /** Dispatch system call */ |
2605 | jermar | 100 | unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3, |
101 | unative_t a4, unative_t a5, unative_t a6, unative_t id) |
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1100 | palkovsky | 102 | { |
1780 | jermar | 103 | unative_t rc; |
1579 | jermar | 104 | |
3492 | rimsky | 105 | #ifdef CONFIG_UDEBUG |
106 | udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false); |
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107 | #endif |
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108 | |||
109 | if (id < SYSCALL_END) { |
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110 | #ifdef CONFIG_UDEBUG |
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111 | udebug_stoppable_begin(); |
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112 | #endif |
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2605 | jermar | 113 | rc = syscall_table[id](a1, a2, a3, a4, a5, a6); |
3492 | rimsky | 114 | } else { |
3064 | decky | 115 | printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id); |
1597 | palkovsky | 116 | task_kill(TASK->taskid); |
117 | thread_exit(); |
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118 | } |
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1579 | jermar | 119 | |
120 | if (THREAD->interrupted) |
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121 | thread_exit(); |
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3492 | rimsky | 122 | |
123 | #ifdef CONFIG_UDEBUG |
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124 | udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true); |
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125 | udebug_stoppable_end(); |
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126 | #endif |
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1579 | jermar | 127 | |
128 | return rc; |
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1100 | palkovsky | 129 | } |
130 | |||
662 | decky | 131 | syshandler_t syscall_table[SYSCALL_END] = { |
3113 | decky | 132 | (syshandler_t) sys_klog, |
2119 | decky | 133 | (syshandler_t) sys_tls_set, |
1297 | jermar | 134 | |
1235 | jermar | 135 | /* Thread and task related syscalls. */ |
2119 | decky | 136 | (syshandler_t) sys_thread_create, |
137 | (syshandler_t) sys_thread_exit, |
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2187 | decky | 138 | (syshandler_t) sys_thread_get_id, |
3064 | decky | 139 | |
2119 | decky | 140 | (syshandler_t) sys_task_get_id, |
3222 | svoboda | 141 | (syshandler_t) sys_program_spawn_loader, |
1235 | jermar | 142 | |
143 | /* Synchronization related syscalls. */ |
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2119 | decky | 144 | (syshandler_t) sys_futex_sleep_timeout, |
145 | (syshandler_t) sys_futex_wakeup, |
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3222 | svoboda | 146 | (syshandler_t) sys_smc_coherence, |
1235 | jermar | 147 | |
148 | /* Address space related syscalls. */ |
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2119 | decky | 149 | (syshandler_t) sys_as_area_create, |
150 | (syshandler_t) sys_as_area_resize, |
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3222 | svoboda | 151 | (syshandler_t) sys_as_area_change_flags, |
2119 | decky | 152 | (syshandler_t) sys_as_area_destroy, |
153 | |||
1235 | jermar | 154 | /* IPC related syscalls. */ |
2119 | decky | 155 | (syshandler_t) sys_ipc_call_sync_fast, |
2615 | jermar | 156 | (syshandler_t) sys_ipc_call_sync_slow, |
2119 | decky | 157 | (syshandler_t) sys_ipc_call_async_fast, |
2618 | jermar | 158 | (syshandler_t) sys_ipc_call_async_slow, |
2119 | decky | 159 | (syshandler_t) sys_ipc_answer_fast, |
2619 | jermar | 160 | (syshandler_t) sys_ipc_answer_slow, |
2119 | decky | 161 | (syshandler_t) sys_ipc_forward_fast, |
162 | (syshandler_t) sys_ipc_wait_for_call, |
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163 | (syshandler_t) sys_ipc_hangup, |
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164 | (syshandler_t) sys_ipc_register_irq, |
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165 | (syshandler_t) sys_ipc_unregister_irq, |
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166 | |||
1297 | jermar | 167 | /* Capabilities related syscalls. */ |
2119 | decky | 168 | (syshandler_t) sys_cap_grant, |
169 | (syshandler_t) sys_cap_revoke, |
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170 | |||
1235 | jermar | 171 | /* DDI related syscalls. */ |
2119 | decky | 172 | (syshandler_t) sys_physmem_map, |
173 | (syshandler_t) sys_iospace_enable, |
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174 | (syshandler_t) sys_preempt_control, |
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1318 | vana | 175 | |
176 | /* Sysinfo syscalls */ |
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2119 | decky | 177 | (syshandler_t) sys_sysinfo_valid, |
178 | (syshandler_t) sys_sysinfo_value, |
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1474 | palkovsky | 179 | |
180 | /* Debug calls */ |
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3492 | rimsky | 181 | (syshandler_t) sys_debug_enable_console, |
182 | |||
183 | (syshandler_t) sys_ipc_connect_kbox |
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662 | decky | 184 | }; |
1702 | cejka | 185 | |
1862 | jermar | 186 | /** @} |
1702 | cejka | 187 | */ |