cpu.h revision 285397
1/*- 2 * Copyright (C) 1995-1997 Wolfgang Solfrank. 3 * Copyright (C) 1995-1997 TooLs GmbH. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by TooLs GmbH. 17 * 4. The name of TooLs GmbH may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $NetBSD: cpu.h,v 1.11 2000/05/26 21:19:53 thorpej Exp $ 32 * $FreeBSD: head/sys/powerpc/include/cpu.h 285397 2015-07-11 17:33:50Z jhibbits $ 33 */ 34 35#ifndef _MACHINE_CPU_H_ 36#define _MACHINE_CPU_H_ 37 38#include <machine/frame.h> 39#include <machine/pcb.h> 40#include <machine/psl.h> 41 42/* 43 * CPU Feature Attributes 44 * 45 * These are defined in the PowerPC ELF ABI for the AT_HWCAP vector, 46 * and are exported to userland via the machdep.cpu_features 47 * sysctl. 48 */ 49 50extern int cpu_features; 51 52#define PPC_FEATURE_32 0x80000000 /* Always true */ 53#define PPC_FEATURE_64 0x40000000 /* Defined on a 64-bit CPU */ 54#define PPC_FEATURE_HAS_ALTIVEC 0x10000000 55#define PPC_FEATURE_HAS_FPU 0x08000000 56#define PPC_FEATURE_HAS_MMU 0x04000000 57#define PPC_FEATURE_UNIFIED_CACHE 0x01000000 58#define PPC_FEATURE_HAS_VSX 0x00000080 59 60#define PPC_FEATURE_BITMASK \ 61 "\20" \ 62 "\040PPC32\037PPC64\035ALTIVEC\034FPU\033MMU\031UNIFIEDCACHE" \ 63 "\010VSX" 64 65#define TRAPF_USERMODE(frame) (((frame)->srr1 & PSL_PR) != 0) 66#define TRAPF_PC(frame) ((frame)->srr0) 67 68/* 69 * CTL_MACHDEP definitions. 70 */ 71#define CPU_CACHELINE 1 72 73static __inline u_int64_t 74get_cyclecount(void) 75{ 76 u_int32_t _upper, _lower; 77 u_int64_t _time; 78 79 __asm __volatile( 80 "mftb %0\n" 81 "mftbu %1" 82 : "=r" (_lower), "=r" (_upper)); 83 84 _time = (u_int64_t)_upper; 85 _time = (_time << 32) + _lower; 86 return (_time); 87} 88 89#define cpu_getstack(td) ((td)->td_frame->fixreg[1]) 90#define cpu_spinwait() __asm __volatile("or 27,27,27") /* yield */ 91 92extern char btext[]; 93extern char etext[]; 94 95void cpu_halt(void); 96void cpu_reset(void); 97void cpu_sleep(void); 98void flush_disable_caches(void); 99void fork_trampoline(void); 100void swi_vm(void *); 101 102#endif /* _MACHINE_CPU_H_ */ 103