acpi_wakeup_low.S revision 1.4
1 1.4 joerg /* $NetBSD: acpi_wakeup_low.S,v 1.4 2007/12/18 07:17:13 joerg Exp $ */ 2 1.2 jmcneill 3 1.2 jmcneill /*- 4 1.2 jmcneill * Copyright (c) 2007 Joerg Sonnenberger <joerg (at) netbsd.org> 5 1.2 jmcneill * Copyright (c) 2001 Takanori Watanabe <takawata (at) jp.freebsd.org> 6 1.2 jmcneill * Copyright (c) 2001 Mitsuru IWASAKI <iwasaki (at) jp.freebsd.org> 7 1.2 jmcneill * All rights reserved. 8 1.2 jmcneill * 9 1.2 jmcneill * Redistribution and use in source and binary forms, with or without 10 1.2 jmcneill * modification, are permitted provided that the following conditions 11 1.2 jmcneill * are met: 12 1.2 jmcneill * 1. Redistributions of source code must retain the above copyright 13 1.2 jmcneill * notice, this list of conditions and the following disclaimer. 14 1.2 jmcneill * 2. Redistributions in binary form must reproduce the above copyright 15 1.2 jmcneill * notice, this list of conditions and the following disclaimer in the 16 1.2 jmcneill * documentation and/or other materials provided with the distribution. 17 1.2 jmcneill * 18 1.2 jmcneill * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 1.2 jmcneill * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 1.2 jmcneill * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 1.2 jmcneill * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 1.2 jmcneill * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 1.2 jmcneill * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 1.2 jmcneill * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 1.2 jmcneill * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 1.2 jmcneill * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 1.2 jmcneill * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 1.2 jmcneill * SUCH DAMAGE. 29 1.2 jmcneill */ 30 1.2 jmcneill 31 1.3 lukem #include <machine/asm.h> 32 1.4 joerg __KERNEL_RCSID(0, "$NetBSD: acpi_wakeup_low.S,v 1.4 2007/12/18 07:17:13 joerg Exp $"); 33 1.3 lukem 34 1.2 jmcneill #include "assym.h" 35 1.4 joerg #include <machine/segments.h> 36 1.2 jmcneill 37 1.2 jmcneill .text 38 1.2 jmcneill .p2align 2, 0x90 39 1.2 jmcneill .globl acpi_md_sleep_exit 40 1.2 jmcneill acpi_md_sleep_exit: 41 1.4 joerg lgdt ACPI_SUSPEND_GDT(%edx) 42 1.4 joerg 43 1.4 joerg /* Reload fixed descriptors for new GDT */ 44 1.4 joerg movw $GSEL(GDATA_SEL, SEL_KPL),%ax 45 1.4 joerg movw %ax,%ds 46 1.2 jmcneill movw %ax,%es 47 1.4 joerg movw %ax,%ss 48 1.4 joerg 49 1.4 joerg movw ACPI_SUSPEND_FS(%edx),%ax 50 1.2 jmcneill movw %ax,%fs 51 1.4 joerg movw ACPI_SUSPEND_GS(%edx),%ax 52 1.2 jmcneill movw %ax,%gs 53 1.2 jmcneill 54 1.4 joerg movl ACPI_SUSPEND_CR2(%edx),%eax 55 1.2 jmcneill movl %eax,%cr2 56 1.4 joerg 57 1.4 joerg movl ACPI_SUSPEND_CR4(%edx),%eax 58 1.2 jmcneill movl %eax,%cr4 59 1.4 joerg movl ACPI_SUSPEND_CR3(%edx),%eax 60 1.2 jmcneill movl %eax,%cr3 61 1.2 jmcneill 62 1.2 jmcneill jmp 1f 63 1.2 jmcneill 1: 64 1.2 jmcneill 65 1.4 joerg lidt ACPI_SUSPEND_IDT(%edx) 66 1.4 joerg lldt ACPI_SUSPEND_LDT(%edx) 67 1.2 jmcneill 68 1.2 jmcneill movl CPUVAR(GDT),%eax 69 1.4 joerg movzwl ACPI_SUSPEND_TR(%edx),%ecx 70 1.4 joerg andl $~0x0200,4(%eax,%ecx, 1) 71 1.4 joerg ltr %cx 72 1.4 joerg 73 1.4 joerg movl ACPI_SUSPEND_EBX(%edx),%ebx 74 1.4 joerg movl ACPI_SUSPEND_ESI(%edx),%esi 75 1.4 joerg movl ACPI_SUSPEND_EDI(%edx),%edi 76 1.4 joerg movl ACPI_SUSPEND_EBP(%edx),%ebp 77 1.4 joerg movl ACPI_SUSPEND_ESP(%edx),%esp 78 1.2 jmcneill 79 1.4 joerg pushl ACPI_SUSPEND_EFL(%edx) 80 1.2 jmcneill popfl 81 1.2 jmcneill 82 1.2 jmcneill xorl %eax,%eax 83 1.2 jmcneill 84 1.2 jmcneill ret 85 1.2 jmcneill 86 1.2 jmcneill .p2align 2, 0x90 87 1.2 jmcneill .type acpi_md_sleep_prepare, @function 88 1.2 jmcneill .globl acpi_md_sleep_prepare 89 1.2 jmcneill acpi_md_sleep_prepare: 90 1.4 joerg movl CPUVAR(SELF),%edx 91 1.4 joerg movw %fs,ACPI_SUSPEND_FS(%edx) 92 1.4 joerg movw %gs,ACPI_SUSPEND_GS(%edx) 93 1.4 joerg 94 1.4 joerg movl %ebx,ACPI_SUSPEND_EBX(%edx) 95 1.4 joerg movl %esi,ACPI_SUSPEND_ESI(%edx) 96 1.4 joerg movl %edi,ACPI_SUSPEND_EDI(%edx) 97 1.4 joerg movl %ebp,ACPI_SUSPEND_EBP(%edx) 98 1.4 joerg movl %esp,ACPI_SUSPEND_ESP(%edx) 99 1.2 jmcneill 100 1.2 jmcneill movl %cr0,%eax 101 1.4 joerg movl %eax,ACPI_SUSPEND_CR0(%edx) 102 1.2 jmcneill movl %cr2,%eax 103 1.4 joerg movl %eax,ACPI_SUSPEND_CR2(%edx) 104 1.2 jmcneill movl %cr3,%eax 105 1.4 joerg movl %eax,ACPI_SUSPEND_CR3(%edx) 106 1.2 jmcneill movl %cr4,%eax 107 1.4 joerg movl %eax,ACPI_SUSPEND_CR4(%edx) 108 1.2 jmcneill 109 1.2 jmcneill pushfl 110 1.4 joerg popl ACPI_SUSPEND_EFL(%edx) 111 1.2 jmcneill 112 1.4 joerg sgdt ACPI_SUSPEND_GDT(%edx) 113 1.4 joerg sidt ACPI_SUSPEND_IDT(%edx) 114 1.4 joerg sldt ACPI_SUSPEND_LDT(%edx) 115 1.4 joerg str ACPI_SUSPEND_TR(%edx) 116 1.2 jmcneill 117 1.2 jmcneill movl 4(%esp),%eax 118 1.2 jmcneill pushl %eax 119 1.2 jmcneill call acpi_md_sleep_enter 120 1.2 jmcneill /* acpi_md_sleep_enter only returns on failure. */ 121 1.2 jmcneill popl %eax 122 1.2 jmcneill movl $-1,%eax 123 1.2 jmcneill ret 124
Indexes created Wed Oct 22 13:09:56 GMT 2025