profile.h revision 1.4 
1/*	$NetBSD: profile.h,v 1.4 2005/09/22 15:47:03 chs Exp $	*/
2
3/*
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)profile.h	8.1 (Berkeley) 6/11/93
32 */
33
34#ifdef _KERNEL_OPT
35#include "opt_multiprocessor.h"
36#endif
37
38#include <machine/cpufunc.h>
39
40#define	_MCOUNT_DECL void _mcount
41
42#define EPROL_EXPORT	__asm(".globl _eprol")
43
44#ifdef PIC
45#define __MCPLT	"@PLT"
46#else
47#define __MCPLT
48#endif
49
50#define	MCOUNT						\
51__weak_alias(mcount, __mcount)				\
52__asm(" .globl __mcount		\n"			\
53"	.type __mcount,@function\n"			\
54"__mcount:			\n"			\
55"	pushq	%rbp		\n"			\
56"	movq	%rsp,%rbp	\n"			\
57"	subq	$56,%rsp	\n"			\
58"	movq	%rdi,0(%rsp)	\n"			\
59"	movq	%rsi,8(%rsp)	\n"			\
60"	movq	%rdx,16(%rsp)	\n"			\
61"	movq	%rcx,24(%rsp)	\n"			\
62"	movq	%r8,32(%rsp)	\n"			\
63"	movq	%r9,40(%rsp)	\n"			\
64"	movq	%rax,48(%rsp)	\n"			\
65"	movq	0(%rbp),%r11	\n"			\
66"	movq	8(%r11),%rdi	\n"			\
67"	movq	8(%rbp),%rsi	\n"			\
68"	call	_mcount		\n"			\
69"	movq	0(%rsp),%rdi	\n"			\
70"	movq	8(%rsp),%rsi	\n"			\
71"	movq	16(%rsp),%rdx	\n"			\
72"	movq	24(%rsp),%rcx	\n"			\
73"	movq	32(%rsp),%r8	\n"			\
74"	movq	40(%rsp),%r9	\n"			\
75"	movq	48(%rsp),%rax	\n"			\
76"	leave			\n"			\
77"	ret			\n"			\
78"	.size __mcount,.-__mcount");
79
80
81#ifdef _KERNEL
82
83#ifdef MULTIPROCESSOR
84__cpu_simple_lock_t __mcount_lock;
85
86#define	MCOUNT_ENTER_MP							\
87	__cpu_simple_lock(&__mcount_lock);
88#define	MCOUNT_EXIT_MP							\
89	__cpu_simple_unlock(&__mcount_lock);
90
91#else
92#define MCOUNT_ENTER_MP
93#define MCOUNT_EXIT_MP
94#endif
95
96#define	MCOUNT_ENTER							\
97	s = (int)read_psl();						\
98	disable_intr();							\
99	MCOUNT_ENTER_MP
100
101#define	MCOUNT_EXIT							\
102	MCOUNT_EXIT_MP							\
103	write_psl(s);
104
105#endif /* _KERNEL */
106