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 */ 28 29#include <machine/asmacros.h> 30#include <machine/pmap.h> 31 32#include "assym.s" 33 34 /* 35 * Define the layout of the per-cpu address space. This is 36 * "constructed" in locore.s on the BSP and in mp_machdep.c for 37 * each AP. DO NOT REORDER THESE WITHOUT UPDATING THE REST! 38 * 39 * On UP the per-cpu address space is simply placed in the data 40 * segment. 41 */ 42 .data 43 44 .globl globaldata 45 .set globaldata,0 46 47 /* 48 * Define layout of the global data. On SMP this lives in 49 * the per-cpu address space, otherwise it's in the data segment. 50 */ 51 .globl gd_curthread, gd_npxthread, gd_reqflags, gd_common_tss 52 .set gd_curthread,globaldata + GD_CURTHREAD 53 .set gd_npxthread,globaldata + GD_NPXTHREAD 54 .set gd_reqflags,globaldata + GD_REQFLAGS 55 .set gd_common_tss,globaldata + GD_COMMON_TSS 56 57 .globl gd_cpumask 58 .set gd_cpumask,globaldata + GD_CPUMASK 59 60 .globl gd_common_tssd, gd_tss_gdt 61 .set gd_common_tssd,globaldata + GD_COMMON_TSSD 62 .set gd_tss_gdt,globaldata + GD_TSS_GDT 63 64 .globl gd_currentldt 65 .set gd_currentldt,globaldata + GD_CURRENTLDT 66 67 .globl gd_fpu_lock, gd_savefpu 68 .set gd_fpu_lock, globaldata + GD_FPU_LOCK 69 .set gd_savefpu, globaldata + GD_SAVEFPU 70 71 /* 72 * The BSP version of these get setup in locore.s and pmap.c, while 73 * the AP versions are setup in mp_machdep.c. 74 */ 75 .globl gd_cpuid, gd_other_cpus 76 .globl gd_ss_eflags, gd_intr_nesting_level 77 .globl gd_CMAP1, gd_CMAP2, gd_CMAP3, gd_PMAP1 78 .globl gd_CADDR1, gd_CADDR2, gd_CADDR3, gd_PADDR1 79 .globl gd_spending, gd_ipending, gd_fpending 80 .globl gd_cnt 81 82 .set gd_cpuid,globaldata + GD_CPUID 83 .set gd_other_cpus,globaldata + GD_OTHER_CPUS 84 .set gd_ss_eflags,globaldata + GD_SS_EFLAGS 85 .set gd_intr_nesting_level,globaldata + GD_INTR_NESTING_LEVEL 86 .set gd_CMAP1,globaldata + GD_PRV_CMAP1 87 .set gd_CMAP2,globaldata + GD_PRV_CMAP2 88 .set gd_CMAP3,globaldata + GD_PRV_CMAP3 89 .set gd_PMAP1,globaldata + GD_PRV_PMAP1 90 .set gd_CADDR1,globaldata + GD_PRV_CADDR1 91 .set gd_CADDR2,globaldata + GD_PRV_CADDR2 92 .set gd_CADDR3,globaldata + GD_PRV_CADDR3 93 .set gd_PADDR1,globaldata + GD_PRV_PADDR1 94 .set gd_fpending,globaldata + GD_FPENDING 95 .set gd_ipending,globaldata + GD_IPENDING 96 .set gd_spending,globaldata + GD_SPENDING 97 .set gd_cnt,globaldata + GD_CNT 98 99 /* 100 * This is a hack to allow us to use builtins for 101 * these functions. We need the underscore version 102 * in situations where a function pointer is required. 103 */ 104 .text 105 .globl _bzero 106 .globl _bcopy 107 .globl _memcmp 108 .globl _memmove 109 .globl _memcpy 110 111 ALIGN_TEXT 112_bzero: 113 jmp bzero 114 115 ALIGN_TEXT 116_bcopy: 117 jmp bcopy 118 119 ALIGN_TEXT 120_memcmp: 121 jmp memcmp 122 123 ALIGN_TEXT 124_memmove: 125 jmp memmove 126 127 ALIGN_TEXT 128_memcpy: 129 jmp memcpy 130