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 * $FreeBSD$ 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 50 extern 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 59 #define PPC_FEATURE_BITMASK \ 60 "\20" \ 61 "\040PPC32\037PPC64\035ALTIVEC\034FPU\033MMU\031UNIFIEDCACHE" 62 63 #define TRAPF_USERMODE(frame) (((frame)->srr1 & PSL_PR) != 0) 64 #define TRAPF_PC(frame) ((frame)->srr0) 65 66 #define cpu_swapout(p) 67 #define cpu_number() 0 68 69 /* 70 * CTL_MACHDEP definitions. 71 */ 72 #define CPU_CACHELINE 1 73 74 static __inline u_int64_t 75 get_cyclecount(void) 76 { 77 u_int32_t _upper, _lower; 78 u_int64_t _time; 79 80 __asm __volatile( 81 "mftb %0\n" 82 "mftbu %1" 83 : "=r" (_lower), "=r" (_upper)); 84 85 _time = (u_int64_t)_upper; 86 _time = (_time << 32) + _lower; 87 return (_time); 88 } 89 90 #define cpu_getstack(td) ((td)->td_frame->fixreg[1]) 91 #define cpu_spinwait() /* nothing */ 92 93 extern char btext[]; 94 extern char etext[]; 95 96 void cpu_halt(void); 97 void cpu_reset(void); 98 void fork_trampoline(void); 99 void swi_vm(void *); 100 101 /* XXX the following should not be here. */ 102 void savectx(struct pcb *); 103 int kcopy(const void *, void *, size_t); 104 105 #endif /* _MACHINE_CPU_H_ */ 106