Merge branches 'hammer2' and 'master' of ssh://crater.dragonflybsd.org/repository...
[dragonfly.git] / test / sysmsg / syscall.h
1 /*
2  * Copyright (c) 2004 Eirik Nygaard.  All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  * 3. Neither the name of The DragonFly Project nor the names of its
13  *    contributors may be used to endorse or promote products derived
14  *    from this software without specific, prior written permission.
15  * 
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
19  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
20  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
22  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * $DragonFly: src/test/sysmsg/syscall.h,v 1.1 2004/09/02 11:21:12 eirikn Exp $
30  */
31
32 /* XXX: eirik */
33 #define _MMAP_DECLARED
34 #define _LSEEK_DECLARED
35 #define _TRUNCATE_DECLARED
36 #define _FTRUNCATE_DECLARED
37
38 #define __syscall_args nosys_args
39
40 #include <sys/types.h>
41 #include <sys/msgport.h>
42 #include <sys/syscall.h>
43 #include <sys/sysproto.h>
44
45 #include <stdlib.h>
46 #include <errno.h>
47
48 #define INITMSGSYSCALL(name, flags) do {                                \
49         bzero(&__CONCAT(name, msg), sizeof(__CONCAT(name, msg)));       \
50         (__CONCAT(name, msg)).usrmsg.umsg.ms_cmd.cm_op =                \
51                 (__CONCAT(SYS_,name));                                  \
52         (__CONCAT(name, msg)).usrmsg.umsg.ms_flags = (flags);           \
53 } while (0)
54
55 #define DOMSGSYSCALL(name) do {                                         \
56         error = sendsys(NULL, &__CONCAT(name,msg).usrmsg,               \
57                 sizeof(__CONCAT(name,msg)));                            \
58 } while (0)
59
60 #define FINISHMSGSYSCALL(name, error) do {                              \
61         if (__CONCAT(name,msg).usrmsg.umsg.ms_error == EASYNC) {        \
62                 for (;;) {                                              \
63                         int rmsg;                                       \
64                         rmsg = waitsys(NULL, (void *)error, 0);         \
65                         if (error == rmsg)                              \
66                                 break;                                  \
67                         else if (rmsg != 0) {                           \
68                                 errno = rmsg;                           \
69                                 return(-1);                             \
70                         }                                               \
71                 }                                                       \
72         }                                                               \
73         if (__CONCAT(name,msg).usrmsg.umsg.ms_error) {                  \
74                 errno = __CONCAT(name,msg).usrmsg.umsg.ms_error;        \
75                 return(-1);                                             \
76         }                                                               \
77         else                                                            \
78                 return(__CONCAT(name,msg).usrmsg.umsg.u.ms_result);     \
79 } while(0)
80
81 static __inline int
82 sendsys(void *port, void *msg, int msgsize)
83 {
84         int error;
85
86         __asm __volatile("int $0x81" : "=a"(error), "=c"(msg), "=d"(msgsize) :
87                          "0"(port), "1"(msg), "2"(msgsize) : "memory");
88         return(error);
89 }
90
91 static __inline int
92 waitsys(void *port, void *msg, int msgsize)
93 {
94         int error;
95
96         __asm __volatile("int $0x82" : "=a"(error), "=c"(msg),
97                         "=d"(msgsize) : "0"(port), "1"(msg), "2"(msgsize) :
98                         "memory");
99         return(error);
100 }