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/*
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/*
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 * Copyright (C) 2005 Martin Decky
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 * Copyright (C) 2005 Martin Decky
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 * All rights reserved.
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 * All rights reserved.
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 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * are met:
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 *
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 *
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 * - Redistributions of source code must retain the above copyright
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *   derived from this software without specific prior written permission.
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 *
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 <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 <ipc/ipc.h>
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#include <errno.h>
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#include <proc/task.h>
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#include <arch.h>
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#include <debug.h>
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int sys_ctl(void) {
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static __native sys_ctl(void) {
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    printf("Thread finished\n");
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    printf("Thread finished\n");
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    thread_exit();
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    thread_exit();
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    /* Unreachable */
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    /* Unreachable */
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    return 0;
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    return 0;
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}
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}
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int sys_io(int fd, const void * buf, size_t count) {
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static __native sys_io(int fd, const void * buf, size_t count) {
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    // TODO: buf sanity checks and a lot of other stuff ...
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    // TODO: buf sanity checks and a lot of other stuff ...
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    size_t i;
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    size_t i;
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    for (i = 0; i < count; i++)
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    for (i = 0; i < count; i++)
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        putchar(((char *) buf)[i]);
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        putchar(((char *) buf)[i]);
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    return count;
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    return count;
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}
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}
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/** Send a call over syscall
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 *
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 * @return Call identification, returns -1 on fatal error,
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           -2 on 'Too many async request, handle answers first
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 */
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static __native sys_ipc_call(__native phoneid, __native arg1, __native arg2)
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{
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    call_t *call;
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    phone_t *phone;
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    if (phoneid >= IPC_MAX_PHONES)
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        return -ENOENT;
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    phone = &TASK->phones[phoneid];
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    if (!phone->callee)
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        return -ENOENT;
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    /* TODO: Check that we did not exceed system imposed maximum
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     * of asynchrnously sent messages
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     * - the userspace should be able to handle it correctly
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     */
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    call = ipc_call_alloc();
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    call->data[0] = arg1;
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    call->data[1] = arg2;
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    ipc_call(phone, call);
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    return (__native) call;
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}
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/** Send IPC answer */
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static __native sys_ipc_answer(__native callid, __native arg1, __native arg2)
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{
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    call_t *call;
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    /* Check that the user is not sending us answer callid */
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    ASSERT(! (callid & 1));
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    /* TODO: Check that the callid is in the dispatch table */
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    call = (call_t *) callid;
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    call->data[0] = arg1;
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    call->data[1] = arg2;
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    ipc_answer(&TASK->answerbox, call);
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    return 0;
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}
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/** Wait for incoming ipc call or answer
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 *
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 * @param result
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 * @param flags
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 * @return Callid, if callid & 1, then the call is answer
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 */
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static __native sys_ipc_wait_for_call(__native *calldata, __native flags)
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{
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    call_t *call;
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    call = ipc_wait_for_call(&TASK->answerbox, flags);
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    copy_to_uspace(calldata, &call->data, sizeof(__native) * IPC_CALL_LEN);
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    if (call->flags & IPC_CALL_ANSWERED)
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        return ((__native)call) | 1;
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    return (__native)call;
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}
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syshandler_t syscall_table[SYSCALL_END] = {
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syshandler_t syscall_table[SYSCALL_END] = {
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    sys_ctl,
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    sys_ctl,
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    sys_io
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    sys_io,
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    sys_ipc_call,
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    sys_ipc_answer,
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    sys_ipc_wait_for_call
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};
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};
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