acpi_wakeup_low.S revision 1.3
1 /* $NetBSD: acpi_wakeup_low.S,v 1.3 2007/12/11 23:06:11 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Joerg Sonnenberger <joerg (at) netbsd.org> 5 * Copyright (c) 2001 Takanori Watanabe <takawata (at) jp.freebsd.org> 6 * Copyright (c) 2001 Mitsuru IWASAKI <iwasaki (at) jp.freebsd.org> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <machine/asm.h> 32 __KERNEL_RCSID(0, "$NetBSD: acpi_wakeup_low.S,v 1.3 2007/12/11 23:06:11 lukem Exp $"); 33 34 #include "assym.h" 35 36 .text 37 .p2align 2, 0x90 38 .globl acpi_md_sleep_exit 39 acpi_md_sleep_exit: 40 movw r_es,%ax 41 movw %ax,%es 42 movw r_fs,%ax 43 movw %ax,%fs 44 movw r_gs,%ax 45 movw %ax,%gs 46 movw r_ss,%ax 47 movw %ax,%ss 48 49 movl r_cr2,%eax 50 movl %eax,%cr2 51 movl r_cr4,%eax 52 movl %eax,%cr4 53 movl r_cr3,%eax 54 movl %eax,%cr3 55 56 jmp 1f 57 1: 58 59 lidt r_idt 60 lldt r_ldt 61 62 movl CPUVAR(GDT),%eax 63 movzwl r_tr,%edx 64 andl $~0x0200,4(%eax,%edx, 1) 65 ltr %dx 66 67 movl r_esp,%esp 68 69 movl r_ebx,%ebx 70 movl r_ecx,%ecx 71 movl r_edx,%edx 72 movl r_ebp,%ebp 73 movl r_esi,%esi 74 movl r_edi,%edi 75 76 pushl r_efl 77 popfl 78 79 movl ret_addr,%eax 80 movl %eax,(%esp) 81 xorl %eax,%eax 82 83 ret 84 85 .p2align 2, 0x90 86 .type acpi_md_sleep_prepare, @function 87 .globl acpi_md_sleep_prepare 88 acpi_md_sleep_prepare: 89 movw %ds,r_ds 90 movw %es,r_es 91 movw %fs,r_fs 92 movw %gs,r_gs 93 movw %ss,r_ss 94 95 movl %ebx,r_ebx 96 movl %ecx,r_ecx 97 movl %edx,r_edx 98 movl %ebp,r_ebp 99 movl %esi,r_esi 100 movl %edi,r_edi 101 102 movl %cr0,%eax 103 movl %eax,r_cr0 104 movl %cr2,%eax 105 movl %eax,r_cr2 106 movl %cr3,%eax 107 movl %eax,r_cr3 108 movl %cr4,%eax 109 movl %eax,r_cr4 110 111 pushfl 112 popl r_efl 113 114 movl %esp,r_esp 115 116 sgdt r_gdt 117 sidt r_idt 118 sldt r_ldt 119 str r_tr 120 121 movl (%esp),%eax 122 movl %eax,ret_addr 123 movl 4(%esp),%eax 124 pushl %eax 125 call acpi_md_sleep_enter 126 /* acpi_md_sleep_enter only returns on failure. */ 127 popl %eax 128 movl $-1,%eax 129 ret 130 131 .data 132 .align 16 133 .globl acpi_wakeup_ds 134 acpi_wakeup_ds: 135 r_ds: .word 0 136 r_es: .word 0 137 r_fs: .word 0 138 r_gs: .word 0 139 r_ss: .word 0 140 r_tr: .word 0 141 r_ldt: .word 0 142 143 r_ebx: .long 0 144 r_ecx: .long 0 145 r_edx: .long 0 146 r_ebp: .long 0 147 r_esi: .long 0 148 r_edi: .long 0 149 r_esp: .long 0 150 r_efl: .long 0 151 152 .globl acpi_wakeup_cr0 153 acpi_wakeup_cr0: 154 r_cr0: .long 0 155 r_cr2: .long 0 156 r_cr3: .long 0 157 .globl acpi_wakeup_cr4 158 acpi_wakeup_cr4: 159 r_cr4: .long 0 160 161 .globl acpi_wakeup_gdt 162 acpi_wakeup_gdt: 163 r_gdt: .word 0 164 .long 0 165 r_idt: .word 0 166 .long 0 167 168 ret_addr: .long 0 169
Indexes created Sat Nov 01 05:10:12 GMT 2025