128 lines
2.5 KiB
C
128 lines
2.5 KiB
C
|
/*-
|
||
|
|
* Copyright (c) 1998 Doug Rabson
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
||
|
|
*
|
||
|
|
* $FreeBSD$
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _MACHINE_CPUFUNC_H_
|
||
|
|
#define _MACHINE_CPUFUNC_H_
|
||
|
|
|
||
|
|
#ifdef _KERNEL
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
#ifdef __GNUC__
|
||
|
|
|
||
|
|
static __inline void
|
||
|
|
breakpoint(void)
|
||
|
|
{
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Bogus interrupt manipulation
|
||
|
|
*/
|
||
|
|
static __inline void
|
||
|
|
disable_intr(void)
|
||
|
|
{
|
||
|
|
u_int32_t msr;
|
||
|
|
|
||
|
|
msr = 0;
|
||
|
|
__asm __volatile(
|
||
|
|
"mfmsr %0\n\t"
|
||
|
|
"rlwinm %0, %0, 0, 17, 15\n\t"
|
||
|
|
"mtmsr %0"
|
||
|
|
: "+r" (msr));
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline void
|
||
|
|
enable_intr(void)
|
||
|
|
{
|
||
|
|
u_int32_t msr;
|
||
|
|
|
||
|
|
msr = 0;
|
||
|
|
__asm __volatile(
|
||
|
|
"mfmsr %0\n\t"
|
||
|
|
"ori %0, %0, 0x8000\n\t"
|
||
|
|
"mtmsr %0"
|
||
|
|
: "+r" (msr));
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline u_int
|
||
|
|
save_intr(void)
|
||
|
|
{
|
||
|
|
u_int msr;
|
||
|
|
|
||
|
|
__asm __volatile("mfmsr %0" : "=r" (msr));
|
||
|
|
|
||
|
|
return msr;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline critical_t
|
||
|
|
critical_enter(void)
|
||
|
|
{
|
||
|
|
return ((critical_t)save_intr());
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline void
|
||
|
|
restore_intr(u_int msr)
|
||
|
|
{
|
||
|
|
__asm __volatile("mtmsr %0" : : "r" (msr));
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline void
|
||
|
|
critical_exit(critical_t msr)
|
||
|
|
{
|
||
|
|
return (restore_intr((u_int)msr));
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline void
|
||
|
|
powerpc_mb(void)
|
||
|
|
{
|
||
|
|
__asm __volatile("eieio;" : : : "memory");
|
||
|
|
}
|
||
|
|
|
||
|
|
static __inline void
|
||
|
|
*powerpc_get_globalp(void)
|
||
|
|
{
|
||
|
|
void *ret;
|
||
|
|
|
||
|
|
__asm __volatile("mfsprg %0, 0" : "=r" (ret));
|
||
|
|
|
||
|
|
return(ret);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* _KERNEL */
|
||
|
|
|
||
|
|
#endif /* !_MACHINE_CPUFUNC_H_ */
|