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/vkernel/i386/global.s,v 1.2 2007/01/05 22:18:18 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 45 .globl globaldata 46 .set globaldata,0 47 48 /* 49 * Define layout of the global data. On SMP this lives in 50 * the per-cpu address space, otherwise it's in the data segment. 51 */ 52 .globl gd_curthread, gd_npxthread, gd_reqflags, gd_common_tss 53 .set gd_curthread,globaldata + GD_CURTHREAD 54 .set gd_npxthread,globaldata + GD_NPXTHREAD 55 .set gd_reqflags,globaldata + GD_REQFLAGS 56 .set gd_common_tss,globaldata + GD_COMMON_TSS 57 58 .globl gd_cpumask 59 .set gd_cpumask,globaldata + GD_CPUMASK 60 61 .globl gd_common_tssd, gd_tss_gdt 62 .set gd_common_tssd,globaldata + GD_COMMON_TSSD 63 .set gd_tss_gdt,globaldata + GD_TSS_GDT 64 65 .globl gd_currentldt 66 .set gd_currentldt,globaldata + GD_CURRENTLDT 67 68 .globl gd_fpu_lock, gd_savefpu 69 .set gd_fpu_lock, globaldata + GD_FPU_LOCK 70 .set gd_savefpu, globaldata + GD_SAVEFPU 71 72 /* 73 * The BSP version of these get setup in locore.s and pmap.c, while 74 * the AP versions are setup in mp_machdep.c. 75 */ 76 .globl gd_cpuid, gd_other_cpus 77 .globl gd_ss_eflags, gd_intr_nesting_level 78 .globl gd_CMAP1, gd_CMAP2, gd_CMAP3, gd_PMAP1 79 .globl gd_CADDR1, gd_CADDR2, gd_CADDR3, gd_PADDR1 80 .globl gd_spending, gd_ipending, gd_fpending 81 .globl gd_cnt 82 83 .set gd_cpuid,globaldata + GD_CPUID 84 .set gd_other_cpus,globaldata + GD_OTHER_CPUS 85 .set gd_ss_eflags,globaldata + GD_SS_EFLAGS 86 .set gd_intr_nesting_level,globaldata + GD_INTR_NESTING_LEVEL 87 .set gd_CMAP1,globaldata + GD_PRV_CMAP1 88 .set gd_CMAP2,globaldata + GD_PRV_CMAP2 89 .set gd_CMAP3,globaldata + GD_PRV_CMAP3 90 .set gd_PMAP1,globaldata + GD_PRV_PMAP1 91 .set gd_CADDR1,globaldata + GD_PRV_CADDR1 92 .set gd_CADDR2,globaldata + GD_PRV_CADDR2 93 .set gd_CADDR3,globaldata + GD_PRV_CADDR3 94 .set gd_PADDR1,globaldata + GD_PRV_PADDR1 95 .set gd_fpending,globaldata + GD_FPENDING 96 .set gd_ipending,globaldata + GD_IPENDING 97 .set gd_spending,globaldata + GD_SPENDING 98 .set gd_cnt,globaldata + GD_CNT 99