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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 <putchar.h>
#include <errno.h>
#include <arch.h>
#include <debug.h>
#include <ipc/sysipc.h>
#include <synch/futex.h>
#include <synch/smc.h>
#include <ddi/ddi.h>
#include <security/cap.h>
#include <syscall/copy.h>
#include <sysinfo/sysinfo.h>
#include <console/console.h>
/** Print using kernel facility
*
* Print to kernel log.
*
*/
static unative_t sys_klog(int fd, const void * buf, size_t count)
{
size_t i;
char *data;
int rc;
if (count > PAGE_SIZE)
return ELIMIT;
if (count > 0) {
data = (char *) malloc(count, 0);
if (!data)
return ENOMEM;
rc = copy_from_uspace(data, buf, count);
if (rc) {
free(data);
return rc;
}
for (i = 0; i < count; i++)
putchar(data[i]);
free(data);
} else
klog_update();
return count;
}
/** Tell kernel to get keyboard/console access again */
static unative_t sys_debug_enable_console(void)
{
arch_grab_console();
return 0;
}
/** Print a hex integer into klog */
static unative_t sys_debug_putint(unative_t i)
{
printf("[task:0x%x]", i);
return 0;
}
/** 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;
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();
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_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_wait_for_call,
(syshandler_t) sys_ipc_hangup,
(syshandler_t) sys_ipc_register_irq,
(syshandler_t) sys_ipc_unregister_irq,
/* Capabilities related syscalls. */
(syshandler_t) sys_cap_grant,
(syshandler_t) sys_cap_revoke,
/* DDI related syscalls. */
(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_putint,
(syshandler_t) sys_debug_enable_console
};
/** @}
*/