1 /* $NetBSD: SYS.h,v 1.19 2009/12/14 01:07:41 matt Exp $ */
5 * Copyright (c) 1996 Jonathan Stone
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Jonathan Stone for
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 * Copyright (c) 1991, 1993
37 * The Regents of the University of California. All rights reserved.
39 * This code is derived from software contributed to Berkeley by
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
45 * 1. Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in the
49 * documentation and/or other materials provided with the distribution.
50 * 3. Neither the name of the University nor the names of its contributors
51 * may be used to endorse or promote products derived from this software
52 * without specific prior written permission.
54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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66 * from: @(#)SYS.h 8.1 (Berkeley) 6/4/93
69 #include <sys/syscall.h>
71 #include <machine/asm.h>
74 * If compiling for shared libs, Emit sysV ABI PIC segment pseudo-ops.
76 * i) Emit .abicalls before .LEAF entrypoint, and .cpload/.cprestore after.
77 * ii) Do interprocedure jumps indirectly via t9, with the side-effect of
78 * preserving the callee's entry address in t9.
82 # if defined(__mips_o32) || defined(__mips_o64)
83 # define PIC_PROLOGUE(x) SETUP_GP
84 # define PIC_TAILCALL(l) PTR_LA t9, _C_LABEL(l); jr t9
85 # define PIC_RETURN() j ra
87 # define PIC_PROLOGUE(x) SETUP_GP64(t3, x)
88 # define PIC_TAILCALL(l) PTR_LA t9, _C_LABEL(l); RESTORE_GP64; jr t9
89 # define PIC_RETURN() RESTORE_GP64; j ra
92 # define PIC_PROLOGUE(x)
93 # define PIC_TAILCALL(l) j _C_LABEL(l)
94 # define PIC_RETURN() j ra
95 #endif /* __ABICALLS__ */
97 # define SYSTRAP(x) li v0,SYS_ ## x; syscall;
100 * Do a syscall that cannot fail (sync, get{p,u,g,eu,eg)id)
102 #define RSYSCALL_NOERROR(x) \
106 * Do a normal syscall.
108 #define RSYSCALL(x) \
112 * Do a renamed or pseudo syscall (e.g., _exit()), where the entrypoint
113 * and syscall name are not the same.
115 #define PSEUDO_NOERROR(x) \
118 _C_LABEL(x) = _C_LABEL(__CONCAT(__sys_,x)); \
119 .weak _C_LABEL(__CONCAT(_,x)); \
120 _C_LABEL(__CONCAT(_,x)) = _C_LABEL(__CONCAT(__sys_,x)); \
128 _C_LABEL(x) = _C_LABEL(__CONCAT(__sys_,x)); \
129 .weak _C_LABEL(__CONCAT(_,x)); \
130 _C_LABEL(__CONCAT(_,x)) = _C_LABEL(__CONCAT(__sys_,x)); \
131 PIC_PROLOGUE(__sys_ ## x); \
136 PIC_TAILCALL(__cerror); \