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/*
* Copyright (c) 2005 Martin Decky
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup generic
* @{
*/
/**
* @file
* @brief Syscall table and syscall wrappers.
*/
#include <syscall/syscall.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <proc/program.h>
#include <mm/as.h>
#include <print.h>
#include <arch.h>
#include <debug.h>
#include <ddi/device.h>
#include <ipc/sysipc.h>
#include <synch/futex.h>
#include <synch/smc.h>
#include <ddi/ddi.h>
#include <ipc/event.h>
#include <security/cap.h>
#include <sysinfo/sysinfo.h>
#include <console/console.h>
#include <udebug/udebug.h>
/** Dispatch system call */
unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
unative_t a4, unative_t a5, unative_t a6, unative_t id)
{
unative_t rc;
#ifdef CONFIG_UDEBUG
bool debug;
/*
* Early check for undebugged tasks. We do not lock anything as this
* test need not be precise in either way.
*/
debug = THREAD->udebug.active;
if (debug) {
udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
}
#endif
if (id < SYSCALL_END) {
rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
} else {
printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
task_kill(TASK->taskid);
thread_exit();
}
if (THREAD->interrupted)
thread_exit();
#ifdef CONFIG_UDEBUG
if (debug) {
udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
/*
* Stopping point needed for tasks that only invoke
* non-blocking system calls. Not needed if the task
* is not being debugged (it cannot block here).
*/
udebug_stoppable_begin();
udebug_stoppable_end();
}
#endif
return rc;
}
syshandler_t syscall_table[SYSCALL_END] = {
(syshandler_t) sys_klog,
(syshandler_t) sys_tls_set,
/* Thread and task related syscalls. */
(syshandler_t) sys_thread_create,
(syshandler_t) sys_thread_exit,
(syshandler_t) sys_thread_get_id,
(syshandler_t) sys_task_get_id,
(syshandler_t) sys_task_set_name,
(syshandler_t) sys_program_spawn_loader,
/* Synchronization related syscalls. */
(syshandler_t) sys_futex_sleep_timeout,
(syshandler_t) sys_futex_wakeup,
(syshandler_t) sys_smc_coherence,
/* Address space related syscalls. */
(syshandler_t) sys_as_area_create,
(syshandler_t) sys_as_area_resize,
(syshandler_t) sys_as_area_change_flags,
(syshandler_t) sys_as_area_destroy,
/* IPC related syscalls. */
(syshandler_t) sys_ipc_call_sync_fast,
(syshandler_t) sys_ipc_call_sync_slow,
(syshandler_t) sys_ipc_call_async_fast,
(syshandler_t) sys_ipc_call_async_slow,
(syshandler_t) sys_ipc_answer_fast,
(syshandler_t) sys_ipc_answer_slow,
(syshandler_t) sys_ipc_forward_fast,
(syshandler_t) sys_ipc_forward_slow,
(syshandler_t) sys_ipc_wait_for_call,
(syshandler_t) sys_ipc_hangup,
(syshandler_t) sys_ipc_register_irq,
(syshandler_t) sys_ipc_unregister_irq,
/* Event notification syscalls. */
(syshandler_t) sys_event_subscribe,
/* Capabilities related syscalls. */
(syshandler_t) sys_cap_grant,
(syshandler_t) sys_cap_revoke,
/* DDI related syscalls. */
(syshandler_t) sys_device_assign_devno,
(syshandler_t) sys_physmem_map,
(syshandler_t) sys_iospace_enable,
(syshandler_t) sys_preempt_control,
/* Sysinfo syscalls */
(syshandler_t) sys_sysinfo_valid,
(syshandler_t) sys_sysinfo_value,
/* Debug calls */
(syshandler_t) sys_debug_enable_console,
(syshandler_t) sys_debug_disable_console,
(syshandler_t) sys_ipc_connect_kbox
};
/** @}
*/
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