sys/platform/pc32/i386/globals.s

   1 /*-
   2  * Copyright (c) Peter Wemm <peter@netplex.com.au>
   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: src/sys/i386/i386/globals.s,v 1.13.2.1 2000/05/16 06:58:06 dillon Exp $
  27  * $DragonFly: src/sys/platform/pc32/i386/globals.s,v 1.25 2006/12/26 20:43:56 dillon Exp $
  28  */
  29
  30 #include <machine/asmacros.h>
  31 #include <machine/pmap.h>
  32
  33 #include "assym.s"
  34
  35         /*
  36          * Define the layout of the per-cpu address space.  This is
  37          * "constructed" in locore.s on the BSP and in mp_machdep.c for
  38          * each AP.  DO NOT REORDER THESE WITHOUT UPDATING THE REST!
  39          *
  40          * On UP the per-cpu address space is simply placed in the data
  41          * segment.
  42          */
  43         .data
  44         .globl  CPU_prvspace
  45         .set    CPU_prvspace,(MPPTDI << PDRSHIFT)
  46
  47         .globl  globaldata
  48         .set    globaldata,0
  49
  50         /*
  51          * Define layout of the global data.  On SMP this lives in
  52          * the per-cpu address space, otherwise it's in the data segment.
  53          */
  54         .globl  gd_curthread, gd_npxthread, gd_reqflags, gd_common_tss
  55         .set    gd_curthread,globaldata + GD_CURTHREAD
  56         .set    gd_npxthread,globaldata + GD_NPXTHREAD
  57         .set    gd_reqflags,globaldata + GD_REQFLAGS
  58         .set    gd_common_tss,globaldata + GD_COMMON_TSS
  59
  60         .globl  gd_common_tssd, gd_tss_gdt
  61         .set    gd_common_tssd,globaldata + GD_COMMON_TSSD
  62         .set    gd_tss_gdt,globaldata + GD_TSS_GDT
  63
  64         .globl  gd_currentldt
  65         .set    gd_currentldt,globaldata + GD_CURRENTLDT
  66
  67         .globl  gd_fpu_lock, gd_savefpu
  68         .set    gd_fpu_lock, globaldata + GD_FPU_LOCK
  69         .set    gd_savefpu, globaldata + GD_SAVEFPU
  70
  71         /*
  72          * The BSP version of these get setup in locore.s and pmap.c, while
  73          * the AP versions are setup in mp_machdep.c.
  74          */
  75         .globl  gd_cpuid, gd_cpumask, gd_other_cpus
  76         .globl  gd_ss_eflags, gd_intr_nesting_level
  77         .globl  gd_CMAP1, gd_CMAP2, gd_CMAP3, gd_PMAP1
  78         .globl  gd_CADDR1, gd_CADDR2, gd_CADDR3, gd_PADDR1
  79         .globl  gd_spending, gd_ipending
  80         .globl  gd_cnt, gd_private_tss
  81
  82         .set    gd_cpuid,globaldata + GD_CPUID
  83         .set    gd_cpumask,globaldata + GD_CPUMASK
  84         .set    gd_private_tss,globaldata + GD_PRIVATE_TSS
  85         .set    gd_other_cpus,globaldata + GD_OTHER_CPUS
  86         .set    gd_ss_eflags,globaldata + GD_SS_EFLAGS
  87         .set    gd_intr_nesting_level,globaldata + GD_INTR_NESTING_LEVEL
  88         .set    gd_CMAP1,globaldata + GD_PRV_CMAP1
  89         .set    gd_CMAP2,globaldata + GD_PRV_CMAP2
  90         .set    gd_CMAP3,globaldata + GD_PRV_CMAP3
  91         .set    gd_PMAP1,globaldata + GD_PRV_PMAP1
  92         .set    gd_CADDR1,globaldata + GD_PRV_CADDR1
  93         .set    gd_CADDR2,globaldata + GD_PRV_CADDR2
  94         .set    gd_CADDR3,globaldata + GD_PRV_CADDR3
  95         .set    gd_PADDR1,globaldata + GD_PRV_PADDR1
  96         .set    gd_ipending,globaldata + GD_IPENDING
  97         .set    gd_spending,globaldata + GD_SPENDING
  98         .set    gd_cnt,globaldata + GD_CNT