227f66048e
more. This provides three new sysctls to user space: hw.cpu_features - A bitmask of available CPU features hw.floatingpoint - Whether or not there is hardware FP support hw.altivec - Whether or not Altivec is available PR: powerpc/139154 MFC after: 10 days
106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
/*-
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* Copyright (C) 1995-1997 Wolfgang Solfrank.
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* Copyright (C) 1995-1997 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: cpu.h,v 1.11 2000/05/26 21:19:53 thorpej Exp $
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* $FreeBSD$
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*/
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#ifndef _MACHINE_CPU_H_
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#define _MACHINE_CPU_H_
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#include <machine/frame.h>
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#include <machine/pcb.h>
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#include <machine/psl.h>
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/*
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* CPU Feature Attributes
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*
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* These are defined in the PowerPC ELF ABI for the AT_HWCAP vector,
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* and are exported to userland via the machdep.cpu_features
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* sysctl.
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*/
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extern int cpu_features;
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#define PPC_FEATURE_32 0x80000000 /* Always true */
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#define PPC_FEATURE_64 0x40000000 /* Defined on a 64-bit CPU */
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#define PPC_FEATURE_HAS_ALTIVEC 0x10000000
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#define PPC_FEATURE_HAS_FPU 0x08000000
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#define PPC_FEATURE_HAS_MMU 0x04000000
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#define PPC_FEATURE_UNIFIED_CACHE 0x01000000
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#define PPC_FEATURE_BITMASK \
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"\20" \
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"\040PPC32\037PPC64\035ALTIVEC\034FPU\033MMU\031UNIFIEDCACHE"
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#define TRAPF_USERMODE(frame) (((frame)->srr1 & PSL_PR) != 0)
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#define TRAPF_PC(frame) ((frame)->srr0)
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#define cpu_swapout(p)
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#define cpu_number() 0
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/*
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* CTL_MACHDEP definitions.
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*/
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#define CPU_CACHELINE 1
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static __inline u_int64_t
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get_cyclecount(void)
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{
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u_int32_t _upper, _lower;
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u_int64_t _time;
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__asm __volatile(
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"mftb %0\n"
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"mftbu %1"
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: "=r" (_lower), "=r" (_upper));
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_time = (u_int64_t)_upper;
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_time = (_time << 32) + _lower;
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return (_time);
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}
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#define cpu_getstack(td) ((td)->td_frame->fixreg[1])
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#define cpu_spinwait() /* nothing */
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extern char btext[];
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extern char etext[];
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void cpu_halt(void);
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void cpu_reset(void);
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void fork_trampoline(void);
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void swi_vm(void *);
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/* XXX the following should not be here. */
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void savectx(struct pcb *);
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int kcopy(const void *, void *, size_t);
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#endif /* _MACHINE_CPU_H_ */
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