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1 /*
2 * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
3 * The President and Fellows of Harvard College.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #ifndef _SYSCALL_H_
31 #define _SYSCALL_H_
32
33
34 struct trapframe; /* from <machine/trapframe.h> */
35
36 /*
37 * The system call dispatcher.
38 */
39
40 void syscall(struct trapframe *tf);
41
42 /*
43 * Support functions.
44 */
45
46 /* Helper for fork(). You write this. */
47 void enter_forked_process(struct trapframe *tf);
48
49 /* Enter user mode. Does not return. */
50 void enter_new_process(int argc, userptr_t argv, vaddr_t stackptr,
51 vaddr_t entrypoint);
52
53
54 /*
55 * Prototypes for IN-KERNEL entry points for system call implementations.
56 */
57
58 int sys_reboot(int code);
59 int sys___time(userptr_t user_seconds, userptr_t user_nanoseconds);
60
61 #ifdef UW
62 int sys_write(int fdesc,userptr_t ubuf,unsigned int nbytes,int *retval);
63 void sys__exit(int exitcode);
64 int sys_getpid(pid_t *retval);
65 int sys_waitpid(pid_t pid, userptr_t status, int options, pid_t *retval);
66
67 #endif // UW
68
69 #endif /* _SYSCALL_H_ */