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#if JG 45 .globl CPU_prvspace, lapic 46 .set CPU_prvspace,(MPPTDI << PDRSHIFT) 47 /* JG TODO check for correctness */ 48 .set lapic,CPU_prvspace + (NPTEPG-1) * PAGE_SIZE 49#endif 50 51 .globl globaldata 52 .set globaldata,0 53 54 /* 55 * Define layout of the global data. On SMP this lives in 56 * the per-cpu address space, otherwise it's in the data segment. 57 */ 58 .globl gd_curthread, gd_npxthread, gd_reqflags, gd_common_tss 59 .set gd_curthread,globaldata + GD_CURTHREAD 60 .set gd_npxthread,globaldata + GD_NPXTHREAD 61 .set gd_reqflags,globaldata + GD_REQFLAGS 62 .set gd_common_tss,globaldata + GD_COMMON_TSS 63 64 .globl gd_common_tssd, gd_tss_gdt 65 .set gd_common_tssd,globaldata + GD_COMMON_TSSD 66 .set gd_tss_gdt,globaldata + GD_TSS_GDT 67 68 .globl gd_currentldt 69 .set gd_currentldt,globaldata + GD_CURRENTLDT 70 71 .globl gd_fpu_lock, gd_savefpu 72 .set gd_fpu_lock, globaldata + GD_FPU_LOCK 73 .set gd_savefpu, globaldata + GD_SAVEFPU 74 75 /* 76 * The BSP version of these get setup in locore.s and pmap.c, while 77 * the AP versions are setup in mp_machdep.c. 78 */ 79 .globl gd_cpuid, gd_cpumask, gd_other_cpus 80 .globl gd_ss_eflags, gd_intr_nesting_level 81 .globl gd_spending, gd_ipending 82 .globl gd_cnt, gd_private_tss 83 .globl gd_scratch_rsp 84 .globl gd_user_fs, gd_user_gs 85 86 .set gd_cpuid,globaldata + GD_CPUID 87 .set gd_cpumask,globaldata + GD_CPUMASK 88 .set gd_private_tss,globaldata + GD_PRIVATE_TSS 89 .set gd_other_cpus,globaldata + GD_OTHER_CPUS 90 .set gd_ss_eflags,globaldata + GD_SS_EFLAGS 91 .set gd_intr_nesting_level,globaldata + GD_INTR_NESTING_LEVEL 92 .set gd_ipending,globaldata + GD_IPENDING 93 .set gd_spending,globaldata + GD_SPENDING 94 .set gd_cnt,globaldata + GD_CNT 95 .set gd_scratch_rsp,globaldata + GD_SCRATCH_RSP 96 .set gd_user_fs,globaldata + GD_USER_FS 97 .set gd_user_gs,globaldata + GD_USER_GS 98 99