1/*- 2 * Copyright (c) 1998 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29#ifndef _MACHINE_CPUFUNC_H_ 30#define _MACHINE_CPUFUNC_H_ 31 32#ifdef _KERNEL 33 34#include <sys/types.h> 35#include <machine/ia64_cpu.h> 36#include <machine/vmparam.h> 37 38#ifndef _SYS_CDEFS_H_ 39#error this file needs sys/cdefs.h as a prerequisite 40#endif 41 42struct thread; 43 44#define IA64_FIXED_BREAK 0x84B5D 45 46#ifdef __GNUCLIKE_ASM 47 48static __inline void 49breakpoint(void) 50{ 51 __asm __volatile("break.m %0" :: "i"(IA64_FIXED_BREAK)); 52} 53 54#define HAVE_INLINE_FFS 55#define ffs(x) __builtin_ffs(x) 56 57 58static __inline void 59ia64_disable_intr(void) 60{ 61 __asm __volatile ("rsm psr.i"); 62} 63 64static __inline void 65ia64_enable_intr(void) 66{ 67 __asm __volatile ("ssm psr.i;; srlz.d"); 68} 69 70static __inline register_t 71intr_disable(void) 72{ 73 register_t psr; 74 75 __asm __volatile ("mov %0=psr;;" : "=r"(psr)); 76 ia64_disable_intr(); 77 return ((psr & IA64_PSR_I) ? 1 : 0); 78} 79 80static __inline void 81intr_restore(register_t ie) 82{ 83 if (ie) 84 ia64_enable_intr(); 85} 86 87#endif /* __GNUCLIKE_ASM */ 88 89#endif /* _KERNEL */ 90 91#endif /* !_MACHINE_CPUFUNC_H_ */ 92