SYS.h revision 218824 
1182080Srnoland/*-
2182080Srnoland * Copyright (c) 2002 Benno Rice.  All rights reserved.
3182080Srnoland * Copyright (c) 2002 David E. O'Brien.  All rights reserved.
4182080Srnoland *
5182080Srnoland * Redistribution and use in source and binary forms, with or without
6182080Srnoland * modification, are permitted provided that the following conditions
7182080Srnoland * are met:
8182080Srnoland * 1. Redistributions of source code must retain the above copyright
9182080Srnoland *    notice, this list of conditions and the following disclaimer.
10182080Srnoland * 2. Redistributions in binary form must reproduce the above copyright
11182080Srnoland *    notice, this list of conditions and the following disclaimer in the
12182080Srnoland *    documentation and/or other materials provided with the distribution.
13182080Srnoland * 3. Neither the name of the author nor the names of any contributors
14182080Srnoland *    may be used to endorse or promote products derived from this software
15182080Srnoland *    without specific prior written permission.
16182080Srnoland *
17182080Srnoland * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18182080Srnoland * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19182080Srnoland * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20182080Srnoland * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21182080Srnoland * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22182080Srnoland * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23182080Srnoland * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24182080Srnoland * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25182080Srnoland * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26182080Srnoland * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27182080Srnoland * SUCH DAMAGE.
28182080Srnoland *
29182080Srnoland *	$NetBSD: SYS.h,v 1.8 2002/01/14 00:55:56 thorpej Exp $
30182080Srnoland * $FreeBSD: head/lib/libc/powerpc64/SYS.h 218824 2011-02-18 21:44:53Z nwhitehorn $
31182080Srnoland */
32182080Srnoland
33182080Srnoland#include <sys/syscall.h>
34182080Srnoland#include <machine/asm.h>
35182080Srnoland
36182080Srnoland#define _SYSCALL(x)						\
37182080Srnoland	.text;							\
38182080Srnoland	.align 2;						\
39182080Srnoland	li	0,(__CONCAT(SYS_,x));				\
40182080Srnoland	sc
41182080Srnoland
42182080Srnoland#define	SYSCALL(x)						\
43182080Srnoland	.text;							\
44	.align 2;						\
452:	mflr	%r0;						\
46	std	%r0,16(%r1);					\
47	stdu	%r1,-48(%r1);					\
48	bl	CNAME(HIDENAME(cerror));			\
49	nop;							\
50	addi	%r1,%r1,48;					\
51	ld	%r0,16(%r1);					\
52	mtlr	%r0;						\
53	blr;							\
54ENTRY(__CONCAT(__sys_,x));					\
55	.weak	CNAME(x);					\
56	.set	CNAME(x),CNAME(__CONCAT(__sys_,x));		\
57	.weak	CNAME(__CONCAT(_,x));				\
58	.set	CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x));	\
59	_SYSCALL(x);						\
60	bso	2b
61
62#define	PSEUDO(x)						\
63	.text;							\
64	.align 2;						\
65ENTRY(__CONCAT(__sys_,x));					\
66	.weak	CNAME(__CONCAT(_,x));				\
67	.set	CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x));	\
68	_SYSCALL(x);						\
69	bnslr;							\
70	mflr	%r0;						\
71	std	%r0,16(%r1);					\
72	stdu	%r1,-48(%r1);					\
73	bl	CNAME(HIDENAME(cerror));			\
74	nop;							\
75	addi	%r1,%r1,48;					\
76	ld	%r0,16(%r1);					\
77	mtlr	%r0;						\
78	blr;
79
80#define	RSYSCALL(x)						\
81	.text;							\
82	.align 2;						\
83ENTRY(__CONCAT(__sys_,x));					\
84	.weak	CNAME(x);					\
85	.set	CNAME(x),CNAME(__CONCAT(__sys_,x));		\
86	.weak	CNAME(__CONCAT(_,x));				\
87	.set	CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x));	\
88	_SYSCALL(x);						\
89	bnslr;							\
90								\
91	mflr	%r0;						\
92	std	%r0,16(%r1);					\
93	stdu	%r1,-48(%r1);					\
94	bl	CNAME(HIDENAME(cerror));			\
95	nop;							\
96	addi	%r1,%r1,48;					\
97	ld	%r0,16(%r1);					\
98	mtlr	%r0;						\
99	blr;
100