[f761f1eb] | 1 | /*
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[df4ed85] | 2 | * Copyright (c) 2001-2004 Jakub Jermar
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[f761f1eb] | 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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[06e1e95] | 29 | /** @addtogroup ia32
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[b45c443] | 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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[06e1e95] | 35 | #ifndef KERN_ia32_PM_H_
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| 36 | #define KERN_ia32_PM_H_
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[f761f1eb] | 37 |
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[7e956eb] | 38 | #define IDT_ITEMS 64
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| 39 | #define GDT_ITEMS 7
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[22cf454d] | 40 |
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| 41 | #define VESA_INIT_SEGMENT 0x8000
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[f761f1eb] | 42 |
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| 43 | #define NULL_DES 0
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| 44 | #define KTEXT_DES 1
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| 45 | #define KDATA_DES 2
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| 46 | #define UTEXT_DES 3
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| 47 | #define UDATA_DES 4
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| 48 | #define TSS_DES 5
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[f476e76] | 49 | #define TLS_DES 6 /* Pointer to Thread-Local-Storage data */
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[e8194664] | 50 |
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| 51 | #ifdef CONFIG_FB
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| 52 |
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| 53 | #define VESA_INIT_SEGMENT 0x8000
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[22cf454d] | 54 | #define VESA_INIT_DES 7
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[e8194664] | 55 | #undef GDT_ITEMS
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| 56 | #define GDT_ITEMS 8
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| 57 |
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| 58 | #endif /* CONFIG_FB */
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| 59 |
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[f761f1eb] | 60 |
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[f476e76] | 61 | #define selector(des) ((des) << 3)
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[f761f1eb] | 62 |
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| 63 | #define PL_KERNEL 0
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| 64 | #define PL_USER 3
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| 65 |
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[7e956eb] | 66 | #define AR_PRESENT (1 << 7)
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| 67 | #define AR_DATA (2 << 3)
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| 68 | #define AR_CODE (3 << 3)
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| 69 | #define AR_WRITABLE (1 << 1)
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[f761f1eb] | 70 | #define AR_INTERRUPT (0xe)
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| 71 | #define AR_TSS (0x9)
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| 72 |
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[7e956eb] | 73 | #define DPL_KERNEL (PL_KERNEL << 5)
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| 74 | #define DPL_USER (PL_USER << 5)
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[f761f1eb] | 75 |
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[39cea6a] | 76 | #define TSS_BASIC_SIZE 104
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[7e956eb] | 77 | #define TSS_IOMAP_SIZE (16 * 1024 + 1) /* 16K for bitmap + 1 terminating byte for convenience */
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[f761f1eb] | 78 |
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[7e956eb] | 79 | #define IO_PORTS (64 * 1024)
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[73e9b49] | 80 |
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[8f2153b] | 81 | #ifndef __ASM__
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| 82 |
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| 83 | #include <arch/types.h>
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| 84 | #include <arch/context.h>
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| 85 |
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[f761f1eb] | 86 | struct ptr_16_32 {
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[7f1c620] | 87 | uint16_t limit;
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| 88 | uint32_t base;
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[f761f1eb] | 89 | } __attribute__ ((packed));
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[39cea6a] | 90 | typedef struct ptr_16_32 ptr_16_32_t;
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[f761f1eb] | 91 |
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| 92 | struct descriptor {
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| 93 | unsigned limit_0_15: 16;
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| 94 | unsigned base_0_15: 16;
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| 95 | unsigned base_16_23: 8;
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| 96 | unsigned access: 8;
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| 97 | unsigned limit_16_19: 4;
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| 98 | unsigned available: 1;
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| 99 | unsigned unused: 1;
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| 100 | unsigned special: 1;
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| 101 | unsigned granularity : 1;
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| 102 | unsigned base_24_31: 8;
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| 103 | } __attribute__ ((packed));
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[39cea6a] | 104 | typedef struct descriptor descriptor_t;
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[f761f1eb] | 105 |
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| 106 | struct idescriptor {
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| 107 | unsigned offset_0_15: 16;
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| 108 | unsigned selector: 16;
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| 109 | unsigned unused: 8;
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| 110 | unsigned access: 8;
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| 111 | unsigned offset_16_31: 16;
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| 112 | } __attribute__ ((packed));
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[39cea6a] | 113 | typedef struct idescriptor idescriptor_t;
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[f761f1eb] | 114 |
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| 115 | struct tss {
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[7f1c620] | 116 | uint16_t link;
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[f761f1eb] | 117 | unsigned : 16;
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[7f1c620] | 118 | uint32_t esp0;
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| 119 | uint16_t ss0;
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[f761f1eb] | 120 | unsigned : 16;
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[7f1c620] | 121 | uint32_t esp1;
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| 122 | uint16_t ss1;
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[f761f1eb] | 123 | unsigned : 16;
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[7f1c620] | 124 | uint32_t esp2;
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| 125 | uint16_t ss2;
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[f761f1eb] | 126 | unsigned : 16;
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[7f1c620] | 127 | uint32_t cr3;
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| 128 | uint32_t eip;
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| 129 | uint32_t eflags;
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| 130 | uint32_t eax;
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| 131 | uint32_t ecx;
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| 132 | uint32_t edx;
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| 133 | uint32_t ebx;
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| 134 | uint32_t esp;
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| 135 | uint32_t ebp;
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| 136 | uint32_t esi;
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| 137 | uint32_t edi;
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| 138 | uint16_t es;
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[f761f1eb] | 139 | unsigned : 16;
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[7f1c620] | 140 | uint16_t cs;
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[f761f1eb] | 141 | unsigned : 16;
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[7f1c620] | 142 | uint16_t ss;
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[f761f1eb] | 143 | unsigned : 16;
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[7f1c620] | 144 | uint16_t ds;
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[f761f1eb] | 145 | unsigned : 16;
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[7f1c620] | 146 | uint16_t fs;
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[f761f1eb] | 147 | unsigned : 16;
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[7f1c620] | 148 | uint16_t gs;
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[f761f1eb] | 149 | unsigned : 16;
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[7f1c620] | 150 | uint16_t ldtr;
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[f761f1eb] | 151 | unsigned : 16;
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| 152 | unsigned : 16;
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[7f1c620] | 153 | uint16_t iomap_base;
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| 154 | uint8_t iomap[TSS_IOMAP_SIZE];
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[f761f1eb] | 155 | } __attribute__ ((packed));
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[39cea6a] | 156 | typedef struct tss tss_t;
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[f761f1eb] | 157 |
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[39cea6a] | 158 | extern ptr_16_32_t gdtr;
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| 159 | extern ptr_16_32_t bootstrap_gdtr;
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| 160 | extern ptr_16_32_t protected_ap_gdtr;
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[f761f1eb] | 161 | extern struct tss *tss_p;
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| 162 |
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[39cea6a] | 163 | extern descriptor_t gdt[];
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[f761f1eb] | 164 |
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| 165 | extern void pm_init(void);
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| 166 |
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[7f1c620] | 167 | extern void gdt_setbase(descriptor_t *d, uintptr_t base);
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| 168 | extern void gdt_setlimit(descriptor_t *d, uint32_t limit);
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[f761f1eb] | 169 |
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| 170 | extern void idt_init(void);
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[7f1c620] | 171 | extern void idt_setoffset(idescriptor_t *d, uintptr_t offset);
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[f761f1eb] | 172 |
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[39cea6a] | 173 | extern void tss_initialize(tss_t *t);
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[7f1c620] | 174 | extern void set_tls_desc(uintptr_t tls);
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[f761f1eb] | 175 |
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[8f2153b] | 176 | #endif /* __ASM__ */
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| 177 |
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[f761f1eb] | 178 | #endif
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[b45c443] | 179 |
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[06e1e95] | 180 | /** @}
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[b45c443] | 181 | */
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