138 lines
3.9 KiB
C
138 lines
3.9 KiB
C
/* $NetBSD: profile.h,v 1.33 2007/12/20 23:46:13 ad Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)profile.h 8.1 (Berkeley) 6/11/93
|
|
*/
|
|
|
|
#ifdef _KERNEL_OPT
|
|
#include "opt_multiprocessor.h"
|
|
#endif
|
|
|
|
#ifdef _KERNEL
|
|
#include <machine/cpufunc.h>
|
|
#include <machine/lock.h>
|
|
#endif
|
|
|
|
#define _MCOUNT_DECL static __inline void _mcount
|
|
|
|
#ifdef __ELF__
|
|
#define MCOUNT_ENTRY "__mcount"
|
|
#define MCOUNT_COMPAT __weak_alias(mcount, __mcount)
|
|
#else
|
|
#define MCOUNT_ENTRY "mcount"
|
|
#define MCOUNT_COMPAT /* nothing */
|
|
#endif
|
|
|
|
#define MCOUNT \
|
|
MCOUNT_COMPAT \
|
|
extern void mcount(void) __asm(MCOUNT_ENTRY) \
|
|
__attribute__((__no_instrument_function__)); \
|
|
void \
|
|
mcount(void) \
|
|
{ \
|
|
int selfpc, frompcindex; \
|
|
int eax, ecx, edx; \
|
|
\
|
|
__asm volatile("movl %%eax,%0" : "=g" (eax)); \
|
|
__asm volatile("movl %%ecx,%0" : "=g" (ecx)); \
|
|
__asm volatile("movl %%edx,%0" : "=g" (edx)); \
|
|
/* \
|
|
* find the return address for mcount, \
|
|
* and the return address for mcount's caller. \
|
|
* \
|
|
* selfpc = pc pushed by mcount call \
|
|
*/ \
|
|
__asm volatile("movl 4(%%ebp),%0" : "=r" (selfpc)); \
|
|
/* \
|
|
* frompcindex = pc pushed by call into self. \
|
|
*/ \
|
|
__asm volatile("movl (%%ebp),%0;movl 4(%0),%0" \
|
|
: "=r" (frompcindex)); \
|
|
_mcount((u_long)frompcindex, (u_long)selfpc); \
|
|
\
|
|
__asm volatile("movl %0,%%edx" : : "g" (edx)); \
|
|
__asm volatile("movl %0,%%ecx" : : "g" (ecx)); \
|
|
__asm volatile("movl %0,%%eax" : : "g" (eax)); \
|
|
}
|
|
|
|
#ifdef _KERNEL
|
|
#ifdef MULTIPROCESSOR
|
|
__cpu_simple_lock_t __mcount_lock;
|
|
|
|
static inline void
|
|
MCOUNT_ENTER_MP(void)
|
|
{
|
|
__cpu_simple_lock(&__mcount_lock);
|
|
__insn_barrier();
|
|
}
|
|
|
|
static inline void
|
|
MCOUNT_EXIT_MP(void)
|
|
{
|
|
__insn_barrier();
|
|
__mcount_lock = __SIMPLELOCK_UNLOCKED;
|
|
}
|
|
#else
|
|
#define MCOUNT_ENTER_MP()
|
|
#define MCOUNT_EXIT_MP()
|
|
#endif
|
|
|
|
static inline void
|
|
mcount_disable_intr(void)
|
|
{
|
|
__asm volatile("cli");
|
|
}
|
|
|
|
static inline u_long
|
|
mcount_read_psl(void)
|
|
{
|
|
u_long ef;
|
|
|
|
__asm volatile("pushfl; popl %0" : "=r" (ef));
|
|
return (ef);
|
|
}
|
|
|
|
static inline void
|
|
mcount_write_psl(u_long ef)
|
|
{
|
|
__asm volatile("pushl %0; popfl" : : "r" (ef));
|
|
}
|
|
|
|
#define MCOUNT_ENTER \
|
|
s = (int)mcount_read_psl(); \
|
|
mcount_disable_intr(); \
|
|
MCOUNT_ENTER_MP();
|
|
|
|
#define MCOUNT_EXIT \
|
|
MCOUNT_EXIT_MP(); \
|
|
mcount_write_psl(s);
|
|
|
|
#endif /* _KERNEL */
|