1/* $NetBSD: SYS.h,v 1.18 2003/10/29 12:28:33 pooka Exp $ */
2/* $FreeBSD: head/lib/libc/mips/SYS.h 178580 2008-04-26 12:08:02Z imp $ */
| 1/* $NetBSD: SYS.h,v 1.19 2009/12/14 01:07:41 matt Exp $ */
2/* $FreeBSD: head/lib/libc/mips/SYS.h 209231 2010-06-16 12:55:14Z jchandra $ */
|
3
4/*-
5 * Copyright (c) 1996 Jonathan Stone
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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
19 * the NetBSD Project.
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.
22 *
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.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.
33 */
34
35/*-
36 * Copyright (c) 1991, 1993
37 * The Regents of the University of California. All rights reserved.
38 *
39 * This code is derived from software contributed to Berkeley by
40 * Ralph Campbell.
41 *
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
44 * are met:
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.
53 *
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
62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 * SUCH DAMAGE.
65 *
66 * from: @(#)SYS.h 8.1 (Berkeley) 6/4/93
67 */
68
69#include <sys/syscall.h>
70
71#include <machine/asm.h>
72
73/*
74 * If compiling for shared libs, Emit sysV ABI PIC segment pseudo-ops.
75 *
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.
79 */
80#ifdef __ABICALLS__
81 .abicalls
| 3
4/*-
5 * Copyright (c) 1996 Jonathan Stone
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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
19 * the NetBSD Project.
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.
22 *
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.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.
33 */
34
35/*-
36 * Copyright (c) 1991, 1993
37 * The Regents of the University of California. All rights reserved.
38 *
39 * This code is derived from software contributed to Berkeley by
40 * Ralph Campbell.
41 *
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
44 * are met:
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.
53 *
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
62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 * SUCH DAMAGE.
65 *
66 * from: @(#)SYS.h 8.1 (Berkeley) 6/4/93
67 */
68
69#include <sys/syscall.h>
70
71#include <machine/asm.h>
72
73/*
74 * If compiling for shared libs, Emit sysV ABI PIC segment pseudo-ops.
75 *
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.
79 */
80#ifdef __ABICALLS__
81 .abicalls
|
82# define PIC_PROLOGUE(x,sr) .set noreorder; .cpload sr; .set reorder
83# define PIC_CALL(l,sr) la sr, _C_LABEL(l); jr sr
| 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
86# else
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
90# endif
|
84#else
| 91#else
|
85# define PIC_PROLOGUE(x,sr)
86# define PIC_CALL(l,sr) j _C_LABEL(l)
87#endif
| 92# define PIC_PROLOGUE(x)
93# define PIC_TAILCALL(l) j _C_LABEL(l)
94# define PIC_RETURN()
95#endif /* __ABICALLS__ */
|
88
| 96
|
89# define SYSTRAP(x) li v0, SYS_ ## x; syscall;
| 97# define SYSTRAP(x) li v0,SYS_ ## x; syscall;
|
90
91/*
92 * Do a syscall that cannot fail (sync, get{p,u,g,eu,eg)id)
93 */
94#define RSYSCALL_NOERROR(x) \
95 PSEUDO_NOERROR(x)
96
97/*
98 * Do a normal syscall.
99 */
100#define RSYSCALL(x) \
101 PSEUDO(x)
102
103/*
104 * Do a renamed or pseudo syscall (e.g., _exit()), where the entrypoint
105 * and syscall name are not the same.
106 */
107#define PSEUDO_NOERROR(x) \
108LEAF(__sys_ ## x); \
| 98
99/*
100 * Do a syscall that cannot fail (sync, get{p,u,g,eu,eg)id)
101 */
102#define RSYSCALL_NOERROR(x) \
103 PSEUDO_NOERROR(x)
104
105/*
106 * Do a normal syscall.
107 */
108#define RSYSCALL(x) \
109 PSEUDO(x)
110
111/*
112 * Do a renamed or pseudo syscall (e.g., _exit()), where the entrypoint
113 * and syscall name are not the same.
114 */
115#define PSEUDO_NOERROR(x) \
116LEAF(__sys_ ## x); \
|
109 .weak _C_LABEL(x); \
| 117 .weak _C_LABEL(x); \
|
110 _C_LABEL(x) = _C_LABEL(__CONCAT(__sys_,x)); \
111 .weak _C_LABEL(__CONCAT(_,x)); \
112 _C_LABEL(__CONCAT(_,x)) = _C_LABEL(__CONCAT(__sys_,x)); \
113 SYSTRAP(x); \
114 j ra; \
115 END(__sys_ ## x)
116
117#define PSEUDO(x) \
118LEAF(__sys_ ## 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)); \
121 SYSTRAP(x); \
122 j ra; \
123 END(__sys_ ## x)
124
125#define PSEUDO(x) \
126LEAF(__sys_ ## x); \
|
119 .weak _C_LABEL(x); \
| 127 .weak _C_LABEL(x); \
|
120 _C_LABEL(x) = _C_LABEL(__CONCAT(__sys_,x)); \
121 .weak _C_LABEL(__CONCAT(_,x)); \
122 _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)); \
|
123 PIC_PROLOGUE(x,t9); \
| 131 PIC_PROLOGUE(__sys_ ## x); \
|
124 SYSTRAP(x); \
125 bne a3,zero,err; \
| 132 SYSTRAP(x); \
133 bne a3,zero,err; \
|
126 j ra; \
| 134 PIC_RETURN(); \
|
127err: \
| 135err: \
|
128 PIC_CALL(__cerror,t9); \
129 END(__sys_ ## x)
| 136 PIC_TAILCALL(__cerror); \
137END(__sys_ ## x)
|
| |