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| Current File : //compat/linux/proc/68247/cwd/sys/powerpc/include/cpu.h |
/*-
* Copyright (C) 1995-1997 Wolfgang Solfrank.
* Copyright (C) 1995-1997 TooLs GmbH.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*
* $NetBSD: cpu.h,v 1.11 2000/05/26 21:19:53 thorpej Exp $
* $FreeBSD: release/9.1.0/sys/powerpc/include/cpu.h 235539 2012-05-17 10:25:34Z dim $
*/
#ifndef _MACHINE_CPU_H_
#define _MACHINE_CPU_H_
#include <machine/frame.h>
#include <machine/pcb.h>
#include <machine/psl.h>
/*
* CPU Feature Attributes
*
* These are defined in the PowerPC ELF ABI for the AT_HWCAP vector,
* and are exported to userland via the machdep.cpu_features
* sysctl.
*/
extern int cpu_features;
#define PPC_FEATURE_32 0x80000000 /* Always true */
#define PPC_FEATURE_64 0x40000000 /* Defined on a 64-bit CPU */
#define PPC_FEATURE_HAS_ALTIVEC 0x10000000
#define PPC_FEATURE_HAS_FPU 0x08000000
#define PPC_FEATURE_HAS_MMU 0x04000000
#define PPC_FEATURE_UNIFIED_CACHE 0x01000000
#define PPC_FEATURE_BITMASK \
"\20" \
"\040PPC32\037PPC64\035ALTIVEC\034FPU\033MMU\031UNIFIEDCACHE"
#define TRAPF_USERMODE(frame) (((frame)->srr1 & PSL_PR) != 0)
#define TRAPF_PC(frame) ((frame)->srr0)
#define cpu_swapout(p)
#define cpu_number() 0
/*
* CTL_MACHDEP definitions.
*/
#define CPU_CACHELINE 1
static __inline u_int64_t
get_cyclecount(void)
{
u_int32_t _upper, _lower;
u_int64_t _time;
__asm __volatile(
"mftb %0\n"
"mftbu %1"
: "=r" (_lower), "=r" (_upper));
_time = (u_int64_t)_upper;
_time = (_time << 32) + _lower;
return (_time);
}
#define cpu_getstack(td) ((td)->td_frame->fixreg[1])
#define cpu_spinwait() /* nothing */
extern char btext[];
extern char etext[];
void cpu_halt(void);
void cpu_reset(void);
void fork_trampoline(void);
void swi_vm(void *);
/* XXX the following should not be here. */
void savectx(struct pcb *) __returns_twice;
#endif /* _MACHINE_CPU_H_ */