0,0 → 1,200 |
/* |
* 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> |
#include <udebug/udebug.h> |
|
/** Print using kernel facility |
* |
* Print to kernel log. |
* |
*/ |
static unative_t sys_klog(int fd, const void * buf, size_t count) |
{ |
char *data; |
int rc; |
|
if (count > PAGE_SIZE) |
return ELIMIT; |
|
if (count > 0) { |
data = (char *) malloc(count + 1, 0); |
if (!data) |
return ENOMEM; |
|
rc = copy_from_uspace(data, buf, count); |
if (rc) { |
free(data); |
return rc; |
} |
data[count] = 0; |
|
printf("%s", data); |
free(data); |
} else |
klog_update(); |
|
return count; |
} |
|
/** Tell kernel to get keyboard/console access again */ |
static unative_t sys_debug_enable_console(void) |
{ |
#ifdef CONFIG_KCONSOLE |
grab_console(); |
return true; |
#else |
return false; |
#endif |
} |
|
/** Tell kernel to relinquish keyboard/console access */ |
static unative_t sys_debug_disable_console(void) |
{ |
release_console(); |
return true; |
} |
|
/** 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 |
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 |
udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true); |
|
/* |
* Stopping point needed for tasks that only invoke non-blocking |
* system calls. |
*/ |
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_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, |
|
/* 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_enable_console, |
(syshandler_t) sys_debug_disable_console, |
|
(syshandler_t) sys_ipc_connect_kbox |
}; |
|
/** @} |
*/ |