SYS.h revision 218824 
1/*-
2 * Copyright (c) 2002 Benno Rice.  All rights reserved.
3 * Copyright (c) 2002 David E. O'Brien.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	$NetBSD: SYS.h,v 1.8 2002/01/14 00:55:56 thorpej Exp $
30 * $FreeBSD: head/lib/libc/powerpc64/SYS.h 218824 2011-02-18 21:44:53Z nwhitehorn $
31 */
32
33#include <sys/syscall.h>
34#include <machine/asm.h>
35
36#define _SYSCALL(x)						\
37	.text;							\
38	.align 2;						\
39	li	0,(__CONCAT(SYS_,x));				\
40	sc
41
42#define	SYSCALL(x)						\
43	.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