1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/* $OpenBSD: SYS.h,v 1.4 2001/09/26 18:39:13 art Exp $ */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)SYS.h 8.1 (Berkeley) 6/4/93
*
* from: Header: SYS.h,v 1.2 92/07/03 18:57:00 torek Exp
* $NetBSD: SYS.h,v 1.6 2001/07/23 07:26:50 thorpej Exp $
*/
#include <machine/asm.h>
#include <sys/syscall.h>
#include <machine/trap.h>
#ifdef __STDC__
#define _CAT(x,y) x##y
#else
#define _CAT(x,y) x/**/y
#endif
/*
* ERROR branches to cerror. This is done with a macro so that I can
* change it to be position independent later, if need be.
*/
#ifdef PIC
#define CALL(name) \
PIC_PROLOGUE(%g1,%g2); \
sethi %hi(name),%g2; \
or %g2,%lo(name),%g2; \
ldx [%g1+%g2],%g2; \
jmp %g2; \
nop
#else
#define CALL(name) \
sethi %hi(name),%g1; or %lo(name),%g1,%g1; \
jmp %g1; nop
#endif
#define ERROR() CALL(_C_LABEL(__cerror))
/*
* SYSCALL is used when further action must be taken before returning.
* Note that it adds a `nop' over what we could do, if we only knew what
* came at label 1....
*/
#define _SYSCALL(x,y) \
ENTRY(x); mov _CAT(SYS_,y),%g1; t ST_SYSCALL; bcc 1f; nop; ERROR(); 1:
#define SYSCALL(x) \
_SYSCALL(x,x)
/*
* RSYSCALL is used when the system call should just return. Here
* we use the SYSCALL_G2RFLAG to put the `success' return address in %g2
* and avoid a branch.
*/
#define RSYSCALL(x) \
ENTRY(x); mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
t ST_SYSCALL; ERROR()
/*
* PSEUDO(x,y) is like RSYSCALL(y) except that the name is x.
*/
#define PSEUDO(x,y) \
ENTRY(x); mov (_CAT(SYS_,y))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
t ST_SYSCALL; ERROR()
/*
* SYSCALL_NOERROR is like SYSCALL, except it's used for syscalls
* that never fail.
*
* XXX - This should be optimized.
*/
#define SYSCALL_NOERROR(x) \
ENTRY(x); mov _CAT(SYS_,x),%g1; t ST_SYSCALL
/*
* RSYSCALL_NOERROR is like RSYSCALL, except it's used for syscalls
* that never fail.
*
* XXX - This should be optimized.
*/
#define RSYSCALL_NOERROR(x) \
ENTRY(x); mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
t ST_SYSCALL
/*
* PSEUDO_NOERROR(x,y) is like RSYSCALL_NOERROR(y) except that the name is x.
*/
#define PSEUDO_NOERROR(x,y) \
ENTRY(x); mov (_CAT(SYS_,y))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
t ST_SYSCALL
.globl _C_LABEL(__cerror)
/*
* SYSENTRY is for functions that pretend to be syscalls.
*/
#define SYSENTRY(x) ENTRY(x)
|
