1/*- 2 * Copyright (c) Peter Wemm <peter@netplex.com.au> 3 * Copyright (c) 2008 The DragonFly Project. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: src/sys/i386/i386/globals.s,v 1.13.2.1 2000/05/16 06:58:06 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_common_tssd, gd_tss_gdt 59 .set gd_common_tssd,globaldata + GD_COMMON_TSSD 60 .set gd_tss_gdt,globaldata + GD_TSS_GDT 61 62 .globl gd_currentldt 63 .set gd_currentldt,globaldata + GD_CURRENTLDT 64 65 .globl gd_fpu_lock, gd_savefpu 66 .set gd_fpu_lock, globaldata + GD_FPU_LOCK 67 .set gd_savefpu, globaldata + GD_SAVEFPU 68 69 /* 70 * The BSP version of these get setup in locore.s and pmap.c, while 71 * the AP versions are setup in mp_machdep.c. 72 */ 73 .globl gd_cpuid, gd_cpumask, gd_other_cpus 74 .globl gd_ss_eflags, gd_intr_nesting_level 75 .globl gd_spending, gd_ipending 76 .globl gd_cnt, gd_private_tss 77 .globl gd_scratch_rsp 78 .globl gd_user_fs, gd_user_gs 79 .globl gd_sample_pc 80 .globl gd_sample_sp 81 .globl gd_npoll 82 .globl gd_cpumask_simple 83 .globl gd_cpumask_offset 84 85 .set gd_cpuid,globaldata + GD_CPUID 86 .set gd_cpumask,globaldata + GD_CPUMASK 87 .set gd_private_tss,globaldata + GD_PRIVATE_TSS 88 .set gd_other_cpus,globaldata + GD_OTHER_CPUS 89 .set gd_ss_eflags,globaldata + GD_SS_EFLAGS 90 .set gd_intr_nesting_level,globaldata + GD_INTR_NESTING_LEVEL 91 .set gd_ipending,globaldata + GD_IPENDING 92 .set gd_spending,globaldata + GD_SPENDING 93 .set gd_cnt,globaldata + GD_CNT 94 .set gd_scratch_rsp,globaldata + GD_SCRATCH_RSP 95 .set gd_user_fs,globaldata + GD_USER_FS 96 .set gd_user_gs,globaldata + GD_USER_GS 97 .set gd_sample_pc,globaldata + GD_SAMPLE_PC 98 .set gd_sample_sp,globaldata + GD_SAMPLE_SP 99 .set gd_npoll,globaldata + GD_NPOLL 100 .set gd_cpumask_simple,globaldata + GD_CPUMASK_SIMPLE 101 .set gd_cpumask_offset,globaldata + GD_CPUMASK_OFFSET 102 103