SYS.h revision 1.4 
1/*	$NetBSD: SYS.h,v 1.4 2003/10/06 05:30:21 matt Exp $	*/
2
3/*	$OpenBSD: SYS.h,v 1.9 2001/09/20 20:52:09 millert Exp $	*/
4
5/*
6 * Copyright (c) 1998-1999 Michael Shalayeff
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed by Michael Shalayeff.
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 MIND
29 * USE, 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#include <sys/syscall.h>
36#include <machine/asm.h>
37#include <machine/vmparam.h>
38#undef _LOCORE
39#define _LOCORE
40#include <machine/frame.h>
41
42#define	__ENTRY(p,x)	ENTRY(__CONCAT(p,x),0)
43#define	__EXIT(p,x)	EXIT(__CONCAT(p,x))
44
45#define	__SYSCALL_NOERROR(p,x)			!\
46	stw	%rp, HPPA_FRAME_ERP(%sr0,%sp)	!\
47	ldil	L%SYSCALLGATE, %r1		!\
48	ble	4(%sr7, %r1)			!\
49	ldi	__CONCAT(SYS_,x), %t1		!\
50	ldw	HPPA_FRAME_ERP(%sr0,%sp), %rp
51
52#ifdef PIC
53#define	__SYSCALL_ERRNO				!\
54	addil	LT%errno, %r19			!\
55	ldw	RT%errno(%r1), %r1		!\
56	stw	%t1, 0(%r1)
57#else
58#define	__SYSCALL_ERRNO				!\
59	ldil	L%errno, %r1			!\
60	stw	%t1, R%errno(%r1)
61#endif
62
63#define	__SYSCALL(p,x)				!\
64	.import	errno, data			!\
65	__SYSCALL_NOERROR(p,x)			!\
66	comb,=,n %r0, %t1, __CONCAT(x,$noerr)	!\
67	__SYSCALL_ERRNO				!\
68	ldi	-1, %ret0			!\
69	bv	%r0(%rp)				!\
70	ldi	-1, %ret1			!\
71	.label	__CONCAT(x,$noerr)
72
73#define	__RSYSCALL(p,x)			!\
74__ENTRY(p,x)				!\
75	__SYSCALL(p,x)			!\
76	bv	%r0(%rp)			!\
77	nop				!\
78__EXIT(p,x)
79
80#define	__RSYSCALL_NOERROR(p,x)		!\
81__ENTRY(p,x)				!\
82	__SYSCALL_NOERROR(p,x)		!\
83	bv	%r0(%rp)		!\
84	nop				!\
85__EXIT(p,x)
86
87#define	__PSEUDO(p,x,y)			!\
88__ENTRY(p,x)				!\
89	__SYSCALL(p,y)			!\
90	bv	%r0(%rp)		!\
91	nop				!\
92__EXIT(p,x)
93
94#define	__PSEUDO_NOERROR(p,x,y)		!\
95__ENTRY(p,x)				!\
96	__SYSCALL_NOERROR(p,y)		!\
97	bv	%r0(%rp)		!\
98	nop				!\
99__EXIT(p,x)
100
101#ifdef WEAK_ALIAS
102#define WSYSCALL(weak,strong)		!\
103	WEAK_ALIAS(weak,strong)		!\
104	PSEUDO(strong,weak)
105#else
106#define WSYSCALL(weak,strong)		!\
107	PSEUDO(weak,weak)
108#endif
109
110#define SYSCALL(x)		__SYSCALL(,x)
111#define RSYSCALL(x)		__RSYSCALL(,x)
112#define RSYSCALL_NOERROR(x)	__RSYSCALL_NOERROR(,x)
113#define PSEUDO(x,y)		__PSEUDO(,x,y)
114#define PSEUDO_NOERROR(x,y)	__PSEUDO_NOERROR(,x,y)
115/*#define SYSENTRY(x)		__ENTRY(,x)*/
116