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 * @{
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 * @{
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 */
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 */
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/**
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/**
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 * @file
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 * @file
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 * @brief   Syscall table and syscall wrappers.
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 * @brief Syscall table and syscall wrappers.
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 */
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 */
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#include <syscall/syscall.h>
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#include <syscall/syscall.h>
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#include <proc/thread.h>
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#include <proc/thread.h>
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#include <proc/task.h>
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#include <proc/task.h>
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#include <proc/program.h>
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#include <proc/program.h>
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#include <mm/as.h>
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#include <mm/as.h>
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#include <print.h>
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#include <print.h>
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#include <putchar.h>
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#include <putchar.h>
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#include <errno.h>
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#include <arch.h>
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#include <arch.h>
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#include <debug.h>
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#include <debug.h>
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#include <ddi/device.h>
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#include <ipc/sysipc.h>
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#include <ipc/sysipc.h>
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#include <synch/futex.h>
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#include <synch/futex.h>
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#include <synch/smc.h>
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#include <synch/smc.h>
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#include <ddi/ddi.h>
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#include <ddi/ddi.h>
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#include <security/cap.h>
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#include <security/cap.h>
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#include <syscall/copy.h>
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#include <sysinfo/sysinfo.h>
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#include <sysinfo/sysinfo.h>
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#include <console/console.h>
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#include <console/console.h>
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#include <udebug/udebug.h>
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#include <udebug/udebug.h>
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/** Print using kernel facility
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 *
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 * Print to kernel log.
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 *
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 */
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static unative_t sys_klog(int fd, const void * buf, size_t count)
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{
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    char *data;
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    int rc;
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    if (count > PAGE_SIZE)
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        return ELIMIT;
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    if (count > 0) {
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        data = (char *) malloc(count + 1, 0);
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        if (!data)
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            return ENOMEM;
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        rc = copy_from_uspace(data, buf, count);
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        if (rc) {
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            free(data);
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            return rc;
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        }
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        data[count] = 0;
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        printf("%s", data);
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        free(data);
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    } else
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        klog_update();
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    return count;
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}
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/** Tell kernel to get keyboard/console access again */
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static unative_t sys_debug_enable_console(void)
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{
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#ifdef CONFIG_KCONSOLE
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    grab_console();
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    return true;
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#else
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    return false;
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#endif
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}
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/** Tell kernel to relinquish keyboard/console access */
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static unative_t sys_debug_disable_console(void)
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{
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    release_console();
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    return true;
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}
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/** Dispatch system call */
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/** Dispatch system call */
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unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
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unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
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    unative_t a4, unative_t a5, unative_t a6, unative_t id)
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    unative_t a4, unative_t a5, unative_t a6, unative_t id)
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{
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{
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    unative_t rc;
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    unative_t rc;
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#ifdef CONFIG_UDEBUG
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#ifdef CONFIG_UDEBUG
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    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
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    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
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#endif
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#endif
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    if (id < SYSCALL_END) {
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    if (id < SYSCALL_END) {
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        rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
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        rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
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    } else {
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    } else {
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        printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
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        printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
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        task_kill(TASK->taskid);
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        task_kill(TASK->taskid);
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        thread_exit();
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        thread_exit();
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    }
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    }
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    if (THREAD->interrupted)
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    if (THREAD->interrupted)
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        thread_exit();
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        thread_exit();
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#ifdef CONFIG_UDEBUG
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#ifdef CONFIG_UDEBUG
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    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
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    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
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    /*
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    /*
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     * Stopping point needed for tasks that only invoke non-blocking
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     * Stopping point needed for tasks that only invoke non-blocking
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     * system calls.
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     * system calls.
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     */
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     */
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    udebug_stoppable_begin();
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    udebug_stoppable_begin();
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    udebug_stoppable_end();
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    udebug_stoppable_end();
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#endif 
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#endif
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    return rc;
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    return rc;
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}
 90 
}
141 
 
 91 
 
142 
syshandler_t syscall_table[SYSCALL_END] = {
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syshandler_t syscall_table[SYSCALL_END] = {
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    (syshandler_t) sys_klog,
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    (syshandler_t) sys_klog,
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    /* Capabilities related syscalls. */
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    /* Capabilities related syscalls. */
181 
    (syshandler_t) sys_cap_grant,
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    (syshandler_t) sys_cap_grant,
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    (syshandler_t) sys_cap_revoke,
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    (syshandler_t) sys_cap_revoke,
183 
   
 133 
   
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    /* DDI related syscalls. */
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    /* DDI related syscalls. */
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    (syshandler_t) sys_device_assign_devno,
185 
    (syshandler_t) sys_physmem_map,
 136 
    (syshandler_t) sys_physmem_map,
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    (syshandler_t) sys_iospace_enable,
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    (syshandler_t) sys_iospace_enable,
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    (syshandler_t) sys_preempt_control,
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    (syshandler_t) sys_preempt_control,
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    /* Sysinfo syscalls */
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    /* Sysinfo syscalls */