2 * Copyright (c) Peter Wemm <peter@netplex.com.au>
3 * Copyright (c) 2008 The DragonFly Project.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
27 * $FreeBSD: src/sys/i386/i386/globals.s,v 1.13.2.1 2000/05/16 06:58:06 dillon Exp $
30 #include <machine/asmacros.h>
31 #include <machine/pmap.h>
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!
40 * On UP the per-cpu address space is simply placed in the data
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
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.
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
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
69 .set gd_currentldt,globaldata + GD_CURRENTLDT
71 .globl gd_fpu_lock, gd_savefpu
72 .set gd_fpu_lock, globaldata + GD_FPU_LOCK
73 .set gd_savefpu, globaldata + GD_SAVEFPU
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.
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
84 .globl gd_user_fs, gd_user_gs
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