diff options
Diffstat (limited to 'sys/powerpc/include/cpufunc.h')
-rw-r--r-- | sys/powerpc/include/cpufunc.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/sys/powerpc/include/cpufunc.h b/sys/powerpc/include/cpufunc.h new file mode 100644 index 0000000..d9ad6ae --- /dev/null +++ b/sys/powerpc/include/cpufunc.h @@ -0,0 +1,127 @@ +/*- + * 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_ */ |