| 1 | /* $NetBSD: cpu.h,v 1.60 2012/01/21 16:48:56 chs 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 _AMD64_CPU_H_ |
| 38 | #define _AMD64_CPU_H_ |
| 39 | |
| 40 | #ifdef __x86_64__ |
| 41 | |
| 42 | #include <x86/cpu.h> |
| 43 | |
| 44 | #ifdef _KERNEL |
| 45 | |
| 46 | #if defined(__GNUC__) && !defined(_MODULE) |
| 47 | static struct cpu_info *x86_curcpu(void); |
| 48 | static lwp_t *x86_curlwp(void); |
| 49 | |
| 50 | __inline static struct cpu_info * __unused |
| 51 | x86_curcpu(void) |
| 52 | { |
| 53 | struct cpu_info *ci; |
| 54 | |
| 55 | __asm volatile("movq %%gs:%1, %0" : |
| 56 | "=r" (ci) : |
| 57 | "m" |
| 58 | (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self))); |
| 59 | return ci; |
| 60 | } |
| 61 | |
| 62 | __inline static lwp_t * __unused __attribute__ ((const)) |
| 63 | x86_curlwp(void) |
| 64 | { |
| 65 | lwp_t *l; |
| 66 | |
| 67 | __asm volatile("movq %%gs:%1, %0" : |
| 68 | "=r" (l) : |
| 69 | "m" |
| 70 | (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_curlwp))); |
| 71 | return l; |
| 72 | } |
| 73 | |
| 74 | __inline static void __unused |
| 75 | cpu_set_curpri(int pri) |
| 76 | { |
| 77 | |
| 78 | __asm volatile( |
| 79 | "movl %1, %%gs:%0" : |
| 80 | "=m" (*(struct cpu_info *)offsetof(struct cpu_info, ci_schedstate.spc_curpriority)) : |
| 81 | "r" (pri) |
| 82 | ); |
| 83 | } |
| 84 | #endif /* __GNUC__ && !_MODULE */ |
| 85 | |
| 86 | #define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_tf.tf_cs, \ |
| 87 | (frame)->cf_if.if_tf.tf_rflags) |
| 88 | #define CLKF_PC(frame) ((frame)->cf_if.if_tf.tf_rip) |
| 89 | #define CLKF_INTR(frame) (curcpu()->ci_idepth > 0) |
| 90 | #define LWP_PC(l) ((l)->l_md.md_regs->tf_rip) |
| 91 | |
| 92 | void *cpu_uarea_alloc(bool); |
| 93 | bool cpu_uarea_free(void *); |
| 94 | |
| 95 | #endif /* _KERNEL */ |
| 96 | |
| 97 | #else /* __x86_64__ */ |
| 98 | |
| 99 | #include <i386/cpu.h> |
| 100 | |
| 101 | #endif /* __x86_64__ */ |
| 102 | |
| 103 | #endif /* !_AMD64_CPU_H_ */ |
| 104 | |