kernel - Add support for up to 63 cpus & 512G of ram for 64-bit builds.
[dragonfly.git] / sys / platform / pc64 / x86_64 / global.s
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1/*-
2 * Copyright (c) Peter Wemm <peter@netplex.com.au>
c8fe38ae 3 * Copyright (c) 2008 The DragonFly Project.
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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 $
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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
67553e72 44#if JG
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45 .globl CPU_prvspace, lapic
46 .set CPU_prvspace,(MPPTDI << PDRSHIFT)
67553e72 47 /* JG TODO check for correctness */
c8fe38ae 48 .set lapic,CPU_prvspace + (NPTEPG-1) * PAGE_SIZE
67553e72 49#endif
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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 */
c2fb025d 79 .globl gd_cpuid, gd_cpumask, gd_other_cpus
d7f50089 80 .globl gd_ss_eflags, gd_intr_nesting_level
729e15a8 81 .globl gd_spending, gd_fpending
c8fe38ae 82 .globl gd_cnt, gd_private_tss
d1368d1a 83 .globl gd_scratch_rsp
c8fe38ae 84 .globl gd_user_fs, gd_user_gs
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85
86 .set gd_cpuid,globaldata + GD_CPUID
c2fb025d 87 .set gd_cpumask,globaldata + GD_CPUMASK
c8fe38ae 88 .set gd_private_tss,globaldata + GD_PRIVATE_TSS
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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
d7f50089 92 .set gd_fpending,globaldata + GD_FPENDING
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93 .set gd_spending,globaldata + GD_SPENDING
94 .set gd_cnt,globaldata + GD_CNT
c8fe38ae 95 .set gd_scratch_rsp,globaldata + GD_SCRATCH_RSP
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96 .set gd_user_fs,globaldata + GD_USER_FS
97 .set gd_user_gs,globaldata + GD_USER_GS
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