1 /* $NetBSD: cpu.h,v 1.182 2019/11/21 19:24:00 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)cpu.h 5.4 (Berkeley) 5/9/91 35 */ 36 37 #ifndef _I386_CPU_H_ 38 #define _I386_CPU_H_ 39 40 #include <x86/cpu.h> 41 42 #ifdef _KERNEL 43 44 #if defined(__GNUC__) && !defined(_MODULE) 45 static struct cpu_info *x86_curcpu(void); 46 static lwp_t *x86_curlwp(void); 47 48 __inline static struct cpu_info * __unused 49 x86_curcpu(void) 50 { 51 struct cpu_info *ci; 52 53 __asm volatile("movl %%fs:%1, %0" : 54 "=r" (ci) : 55 "m" 56 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self))); 57 return ci; 58 } 59 60 __inline static lwp_t * __attribute__ ((const)) 61 x86_curlwp(void) 62 { 63 lwp_t *l; 64 65 __asm volatile("movl %%fs:%1, %0" : 66 "=r" (l) : 67 "m" 68 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_curlwp))); 69 return l; 70 } 71 #endif 72 73 #ifdef XENPV 74 #define CLKF_USERMODE(frame) (curcpu()->ci_xen_clockf_usermode) 75 #define CLKF_PC(frame) (curcpu()->ci_xen_clockf_pc) 76 #else /* XENPV */ 77 #define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_cs) 78 #define CLKF_PC(frame) ((frame)->cf_if.if_eip) 79 #endif /* XENPV */ 80 #define CLKF_INTR(frame) (curcpu()->ci_idepth > 0) 81 #define LWP_PC(l) ((l)->l_md.md_regs->tf_eip) 82 83 #ifdef PAE 84 void cpu_alloc_l3_page(struct cpu_info *); 85 #endif /* PAE */ 86 87 #endif /* _KERNEL */ 88 89 #endif /* !_I386_CPU_H_ */ 90