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Rev 3022 Rev 4055
Line 36... Line 36...
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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 <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 <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 <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 <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 <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 <console/klog.h>
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#include <udebug/udebug.h>
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/** Print using kernel facility
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/** Print using kernel facility
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 *
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 *
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 * Some simulators can print only through kernel. Userspace can use
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 * this syscall to facilitate it.
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 * Print to kernel log.
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 *
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 */
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 */
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static unative_t sys_io(int fd, const void * buf, size_t count)
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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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{
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    size_t i;
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    char *data;
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    char *data;
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    int rc;
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    int rc;
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    if (count > PAGE_SIZE)
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    if (count > PAGE_SIZE)
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        return ELIMIT;
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        return ELIMIT;
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-
 
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    data = (char *) malloc(count, 0);
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    if (!data)
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        return ENOMEM;
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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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        rc = copy_from_uspace(data, buf, count);
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    if (rc) {
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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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        free(data);
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        return rc;
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    }
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    } else
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-
 
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    for (i = 0; i < count; i++)
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        putchar(data[i]);
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        klog_update();
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    free(data);
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    return count;
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    return count;
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}
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}
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/** Tell kernel to get keyboard/console access again */
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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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static unative_t sys_debug_enable_console(void)
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{
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{
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#ifdef CONFIG_KCONSOLE
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    arch_grab_console();
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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 0;
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    return true;
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}
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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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114
 
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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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#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 {
120
    } else {
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        klog_printf("TASK %llu: Unknown syscall id %llx", TASK->taskid,
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        printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
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            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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    }
124
    }
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    if (THREAD->interrupted)
126
    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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130
    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
111
   
131
 
-
 
132
    /*
-
 
133
     * Stopping point needed for tasks that only invoke non-blocking
-
 
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     * system calls.
-
 
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     */
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    udebug_stoppable_begin();
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    udebug_stoppable_end();
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#endif  
112
    return rc;
139
    return rc;
113
}
140
}
114
 
141
 
115
syshandler_t syscall_table[SYSCALL_END] = {
142
syshandler_t syscall_table[SYSCALL_END] = {
116
    (syshandler_t) sys_io,
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    (syshandler_t) sys_klog,
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    (syshandler_t) sys_tls_set,
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    (syshandler_t) sys_tls_set,
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    /* Thread and task related syscalls. */
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    /* Thread and task related syscalls. */
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    (syshandler_t) sys_thread_create,
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    (syshandler_t) sys_thread_create,
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    (syshandler_t) sys_thread_exit,
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    (syshandler_t) sys_thread_exit,
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    (syshandler_t) sys_thread_get_id,
149
    (syshandler_t) sys_thread_get_id,
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150
   
123
    (syshandler_t) sys_task_get_id,
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    (syshandler_t) sys_task_get_id,
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152
    (syshandler_t) sys_task_set_name,
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153
    (syshandler_t) sys_program_spawn_loader,
124
   
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    /* Synchronization related syscalls. */
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    /* Synchronization related syscalls. */
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    (syshandler_t) sys_futex_sleep_timeout,
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    (syshandler_t) sys_futex_sleep_timeout,
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    (syshandler_t) sys_futex_wakeup,
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    (syshandler_t) sys_futex_wakeup,
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    (syshandler_t) sys_smc_coherence,
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159
   
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    /* Address space related syscalls. */
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    /* Address space related syscalls. */
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    (syshandler_t) sys_as_area_create,
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    (syshandler_t) sys_as_area_create,
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    (syshandler_t) sys_as_area_resize,
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    (syshandler_t) sys_as_area_resize,
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    (syshandler_t) sys_as_area_change_flags,
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    (syshandler_t) sys_as_area_destroy,
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    (syshandler_t) sys_as_area_destroy,
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    /* IPC related syscalls. */
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    /* IPC related syscalls. */
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    (syshandler_t) sys_ipc_call_sync_fast,
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    (syshandler_t) sys_ipc_call_sync_fast,
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    (syshandler_t) sys_ipc_call_sync_slow,
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    (syshandler_t) sys_ipc_call_sync_slow,
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    (syshandler_t) sys_ipc_call_async_fast,
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    (syshandler_t) sys_ipc_call_async_fast,
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    (syshandler_t) sys_ipc_call_async_slow,
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    (syshandler_t) sys_ipc_call_async_slow,
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    (syshandler_t) sys_ipc_answer_fast,
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    (syshandler_t) sys_ipc_answer_fast,
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    (syshandler_t) sys_ipc_answer_slow,
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    (syshandler_t) sys_ipc_answer_slow,
141
    (syshandler_t) sys_ipc_forward_fast,
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    (syshandler_t) sys_ipc_forward_fast,
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    (syshandler_t) sys_ipc_forward_slow,
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    (syshandler_t) sys_ipc_wait_for_call,
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    (syshandler_t) sys_ipc_wait_for_call,
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    (syshandler_t) sys_ipc_hangup,
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    (syshandler_t) sys_ipc_hangup,
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    (syshandler_t) sys_ipc_register_irq,
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    (syshandler_t) sys_ipc_register_irq,
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    (syshandler_t) sys_ipc_unregister_irq,
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    (syshandler_t) sys_ipc_unregister_irq,
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179
   
Line 156... Line 189...
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    /* Sysinfo syscalls */
189
    /* Sysinfo syscalls */
157
    (syshandler_t) sys_sysinfo_valid,
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    (syshandler_t) sys_sysinfo_valid,
158
    (syshandler_t) sys_sysinfo_value,
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    (syshandler_t) sys_sysinfo_value,
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192
   
160
    /* Debug calls */
193
    /* Debug calls */
161
    (syshandler_t) sys_debug_enable_console
194
    (syshandler_t) sys_debug_enable_console,
-
 
195
    (syshandler_t) sys_debug_disable_console,
-
 
196
   
-
 
197
    (syshandler_t) sys_ipc_connect_kbox
162
};
198
};
163
 
199
 
164
/** @}
200
/** @}
165
 */
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 */