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Annotation of src/sys/arch/i386/include/cpu.h, Revision 1.165.2.1

1.165.2.1! yamt        1: /*     $NetBSD: cpu.h,v 1.165 2008/02/27 20:18:56 xtraeme Exp $        */
1.24      cgd         2:
1.1       cgd         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.
1.103     agc        18:  * 3. Neither the name of the University nor the names of its contributors
1.1       cgd        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:  *
1.24      cgd        34:  *     @(#)cpu.h       5.4 (Berkeley) 5/9/91
1.1       cgd        35:  */
                     36:
1.14      mycroft    37: #ifndef _I386_CPU_H_
                     38: #define _I386_CPU_H_
                     39:
1.165.2.1! yamt       40: #include <x86/cpu.h>
1.82      fvdl       41:
1.165.2.1! yamt       42: #ifdef _KERNEL
1.82      fvdl       43:
1.165.2.1! yamt       44: #if defined(__GNUC__) && !defined(_LKM)
1.146     ad         45: static struct cpu_info *x86_curcpu(void);
                     46: static lwp_t *x86_curlwp(void);
1.105     yamt       47:
1.153     perry      48: __inline static struct cpu_info * __unused
1.146     ad         49: x86_curcpu(void)
1.105     yamt       50: {
                     51:        struct cpu_info *ci;
                     52:
1.119     perry      53:        __asm volatile("movl %%fs:%1, %0" :
1.105     yamt       54:            "=r" (ci) :
                     55:            "m"
1.115     yamt       56:            (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self)));
1.105     yamt       57:        return ci;
                     58: }
                     59:
1.153     perry      60: __inline static lwp_t * __unused
1.146     ad         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: }
1.165.2.1! yamt       71: __inline static void __unused
        !            72: cpu_set_curpri(int pri)
        !            73: {
1.1       cgd        74:
1.165.2.1! yamt       75:        __asm volatile(
        !            76:            "movl %1, %%fs:%0" :
        !            77:            "=m" (*(struct cpu_info *)offsetof(struct cpu_info, ci_schedstate.spc_curpriority)) :
        !            78:            "r" (pri)
        !            79:        );
        !            80: }
        !            81: #endif
1.1       cgd        82:
1.118     cube       83: #define        CLKF_USERMODE(frame)    USERMODE((frame)->cf_if.if_cs, (frame)->cf_if.if_eflags)
                     84: #define        CLKF_PC(frame)          ((frame)->cf_if.if_eip)
1.130     yamt       85: #define        CLKF_INTR(frame)        (curcpu()->ci_idepth > 0)
1.95      thorpej    86: #define        LWP_PC(l)               ((l)->l_md.md_regs->tf_eip)
1.12      mycroft    87:
1.165.2.1! yamt       88: #endif /* _KERNEL */
1.52      fvdl       89:
1.14      mycroft    90: #endif /* !_I386_CPU_H_ */