source: mainline/kernel/arch/ia32/include/arch/pm.h@ 6ecf5b8

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 6ecf5b8 was 6ecf5b8, checked in by Vojtech Horky <vojtechhorky@…>, 13 years ago

Prevent compile-time symlinks in kernel

So far, architecture specific headers for kernel were in
kernel/arch/$ARCH/include directory.
From kernel sources, they were referenced as arch/header.h.

For example, file kernel/arch/$ARCH/include/whatever.h
was included with <arch/whatever.h>.

To allow that, a symbolic link with name `arch' pointing
to the correct `include/' was created during compilation.

This change adds one arch/ directory and instead of
creating a symbolic link for each compilation, -I flag
was added to the compiler (the header mentioned above would
now reside in kernel/arch/$ARCH/include/arch/whatever.h).

The same goes for genarch/ includes.

This change would be followed by similar changes in userspace
and ABI. To overall goal is to simplify job of documenation
generators or IDEs that might have problems with the dynamically
created symbolic links.
  • Property mode set to 100644
File size: 4.2 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/** @addtogroup ia32
30 * @{
31 */
32/** @file
33 */
34
35#ifndef KERN_ia32_PM_H_
36#define KERN_ia32_PM_H_
37
38#define IDT_ITEMS 64
39#define GDT_ITEMS 7
40
41#define NULL_DES 0
42#define KTEXT_DES 1
43#define KDATA_DES 2
44#define UTEXT_DES 3
45#define UDATA_DES 4
46#define TSS_DES 5
47#define TLS_DES 6 /* Pointer to Thread-Local-Storage data */
48
49#ifdef CONFIG_FB
50
51#define VESA_INIT_SEGMENT 0x8000
52#define VESA_INIT_DES 7
53#define KTEXT32_DES KTEXT_DES
54
55#undef GDT_ITEMS
56#define GDT_ITEMS 8
57
58#endif /* CONFIG_FB */
59
60#define GDT_SELECTOR(des) ((des) << 3)
61
62#define PL_KERNEL 0
63#define PL_USER 3
64
65#define AR_PRESENT (1 << 7)
66#define AR_DATA (2 << 3)
67#define AR_CODE (3 << 3)
68#define AR_WRITABLE (1 << 1)
69#define AR_INTERRUPT (0xe)
70#define AR_TRAP (0xf)
71#define AR_TSS (0x9)
72
73#define DPL_KERNEL (PL_KERNEL << 5)
74#define DPL_USER (PL_USER << 5)
75
76#define TSS_BASIC_SIZE 104
77#define TSS_IOMAP_SIZE (8 * 1024 + 1) /* 8K for bitmap + 1 terminating byte for convenience */
78
79#define IO_PORTS (64 * 1024)
80
81#ifndef __ASM__
82
83#include <typedefs.h>
84#include <arch/context.h>
85
86typedef struct {
87 uint16_t limit;
88 uint32_t base;
89} __attribute__ ((packed)) ptr_16_32_t;
90
91typedef struct {
92 unsigned limit_0_15: 16;
93 unsigned base_0_15: 16;
94 unsigned base_16_23: 8;
95 unsigned access: 8;
96 unsigned limit_16_19: 4;
97 unsigned available: 1;
98 unsigned unused: 1;
99 unsigned special: 1;
100 unsigned granularity : 1;
101 unsigned base_24_31: 8;
102} __attribute__ ((packed)) descriptor_t;
103
104typedef struct {
105 unsigned offset_0_15: 16;
106 unsigned selector: 16;
107 unsigned unused: 8;
108 unsigned access: 8;
109 unsigned offset_16_31: 16;
110} __attribute__ ((packed)) idescriptor_t;
111
112typedef struct {
113 uint16_t link;
114 unsigned : 16;
115 uint32_t esp0;
116 uint16_t ss0;
117 unsigned : 16;
118 uint32_t esp1;
119 uint16_t ss1;
120 unsigned : 16;
121 uint32_t esp2;
122 uint16_t ss2;
123 unsigned : 16;
124 uint32_t cr3;
125 uint32_t eip;
126 uint32_t eflags;
127 uint32_t eax;
128 uint32_t ecx;
129 uint32_t edx;
130 uint32_t ebx;
131 uint32_t esp;
132 uint32_t ebp;
133 uint32_t esi;
134 uint32_t edi;
135 uint16_t es;
136 unsigned : 16;
137 uint16_t cs;
138 unsigned : 16;
139 uint16_t ss;
140 unsigned : 16;
141 uint16_t ds;
142 unsigned : 16;
143 uint16_t fs;
144 unsigned : 16;
145 uint16_t gs;
146 unsigned : 16;
147 uint16_t ldtr;
148 unsigned : 16;
149 unsigned : 16;
150 uint16_t iomap_base;
151 uint8_t iomap[TSS_IOMAP_SIZE];
152} __attribute__ ((packed)) tss_t;
153
154extern ptr_16_32_t gdtr;
155extern ptr_16_32_t protected_ap_gdtr;
156extern tss_t *tss_p;
157
158extern descriptor_t gdt[];
159
160extern void pm_init(void);
161
162extern void gdt_setbase(descriptor_t *d, uintptr_t base);
163extern void gdt_setlimit(descriptor_t *d, uint32_t limit);
164
165extern void idt_init(void);
166extern void idt_setoffset(idescriptor_t *d, uintptr_t offset);
167
168extern void tss_initialize(tss_t *t);
169extern void set_tls_desc(uintptr_t tls);
170
171#endif /* __ASM__ */
172
173#endif
174
175/** @}
176 */
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