source: mainline/arch/ia32/include/pm.h@ 281b607

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 281b607 was 281b607, checked in by Ondrej Palkovsky <ondrap@…>, 19 years ago

Added basic kernel infrastructure for ThreadLocalStorage(TLS) for
ia32(complete),amd64(complete),mips32(missing emulation of rdhwr instruction).
  • Property mode set to 100644
File size: 3.7 KB
Line 
1/*
2 * Copyright (C) 2001-2004 Jakub Jermar
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 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - 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 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef __PM_H__
30#define __PM_H__
31
32#define IDT_ITEMS 64
33#define GDT_ITEMS 7
34
35#define NULL_DES 0
36#define KTEXT_DES 1
37#define KDATA_DES 2
38#define UTEXT_DES 3
39#define UDATA_DES 4
40#define TSS_DES 5
41#define TLS_DES 6 /* Pointer to Thread-Local-Storage data */
42
43#define selector(des) ((des)<<3)
44
45#define PL_KERNEL 0
46#define PL_USER 3
47
48#define AR_PRESENT (1<<7)
49#define AR_DATA (2<<3)
50#define AR_CODE (3<<3)
51#define AR_WRITABLE (1<<1)
52#define AR_INTERRUPT (0xe)
53#define AR_TSS (0x9)
54
55#define DPL_KERNEL (PL_KERNEL<<5)
56#define DPL_USER (PL_USER<<5)
57
58#define IO_MAP_BASE (104)
59
60#ifndef __ASM__
61
62#include <arch/types.h>
63#include <typedefs.h>
64#include <arch/context.h>
65
66struct ptr_16_32 {
67 __u16 limit;
68 __u32 base;
69} __attribute__ ((packed));
70
71struct descriptor {
72 unsigned limit_0_15: 16;
73 unsigned base_0_15: 16;
74 unsigned base_16_23: 8;
75 unsigned access: 8;
76 unsigned limit_16_19: 4;
77 unsigned available: 1;
78 unsigned unused: 1;
79 unsigned special: 1;
80 unsigned granularity : 1;
81 unsigned base_24_31: 8;
82} __attribute__ ((packed));
83
84struct idescriptor {
85 unsigned offset_0_15: 16;
86 unsigned selector: 16;
87 unsigned unused: 8;
88 unsigned access: 8;
89 unsigned offset_16_31: 16;
90} __attribute__ ((packed));
91
92
93struct tss {
94 __u16 link;
95 unsigned : 16;
96 __u32 esp0;
97 __u16 ss0;
98 unsigned : 16;
99 __u32 esp1;
100 __u16 ss1;
101 unsigned : 16;
102 __u32 esp2;
103 __u16 ss2;
104 unsigned : 16;
105 __u32 cr3;
106 __u32 eip;
107 __u32 eflags;
108 __u32 eax;
109 __u32 ecx;
110 __u32 edx;
111 __u32 ebx;
112 __u32 esp;
113 __u32 ebp;
114 __u32 esi;
115 __u32 edi;
116 __u16 es;
117 unsigned : 16;
118 __u16 cs;
119 unsigned : 16;
120 __u16 ss;
121 unsigned : 16;
122 __u16 ds;
123 unsigned : 16;
124 __u16 fs;
125 unsigned : 16;
126 __u16 gs;
127 unsigned : 16;
128 __u16 ldtr;
129 unsigned : 16;
130 unsigned : 16;
131 __u16 io_map_base;
132} __attribute__ ((packed));
133
134extern struct ptr_16_32 gdtr;
135extern struct ptr_16_32 bootstrap_gdtr;
136extern struct ptr_16_32 protected_ap_gdtr;
137extern struct tss *tss_p;
138
139extern struct descriptor gdt[];
140
141extern void pm_init(void);
142
143extern void gdt_setbase(struct descriptor *d, __address base);
144extern void gdt_setlimit(struct descriptor *d, __u32 limit);
145
146extern void idt_init(void);
147extern void idt_setoffset(struct idescriptor *d, __address offset);
148
149extern void tss_initialize(struct tss *t);
150extern void set_tls_desc(__address tls);
151
152#endif /* __ASM__ */
153
154#endif
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