1#ifndef _ASM_X86_VM86_H
2#define _ASM_X86_VM86_H
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14
15#include <asm/processor-flags.h>
16
17#define BIOSSEG 0x0f000
18
19#define CPU_086 0
20#define CPU_186 1
21#define CPU_286 2
22#define CPU_386 3
23#define CPU_486 4
24#define CPU_586 5
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26
27
28
29#define VM86_TYPE(retval) ((retval) & 0xff)
30#define VM86_ARG(retval) ((retval) >> 8)
31
32#define VM86_SIGNAL 0
33#define VM86_UNKNOWN 1
34
35#define VM86_INTx 2
36#define VM86_STI 3
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40
41
42#define VM86_PICRETURN 4
43#define VM86_TRAP 6
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47
48#define VM86_PLUS_INSTALL_CHECK 0
49#define VM86_ENTER 1
50#define VM86_ENTER_NO_BYPASS 2
51#define VM86_REQUEST_IRQ 3
52#define VM86_FREE_IRQ 4
53#define VM86_GET_IRQ_BITS 5
54#define VM86_GET_AND_RESET_IRQ 6
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61
62struct vm86_regs {
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65
66 long ebx;
67 long ecx;
68 long edx;
69 long esi;
70 long edi;
71 long ebp;
72 long eax;
73 long __null_ds;
74 long __null_es;
75 long __null_fs;
76 long __null_gs;
77 long orig_eax;
78 long eip;
79 unsigned short cs, __csh;
80 long eflags;
81 long esp;
82 unsigned short ss, __ssh;
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85
86 unsigned short es, __esh;
87 unsigned short ds, __dsh;
88 unsigned short fs, __fsh;
89 unsigned short gs, __gsh;
90};
91
92struct revectored_struct {
93 unsigned long __map[8];
94};
95
96struct vm86_struct {
97 struct vm86_regs regs;
98 unsigned long flags;
99 unsigned long screen_bitmap;
100 unsigned long cpu_type;
101 struct revectored_struct int_revectored;
102 struct revectored_struct int21_revectored;
103};
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107
108#define VM86_SCREEN_BITMAP 0x0001
109
110struct vm86plus_info_struct {
111 unsigned long force_return_for_pic:1;
112 unsigned long vm86dbg_active:1;
113 unsigned long vm86dbg_TFpendig:1;
114 unsigned long unused:28;
115 unsigned long is_vm86pus:1;
116 unsigned char vm86dbg_intxxtab[32];
117};
118struct vm86plus_struct {
119 struct vm86_regs regs;
120 unsigned long flags;
121 unsigned long screen_bitmap;
122 unsigned long cpu_type;
123 struct revectored_struct int_revectored;
124 struct revectored_struct int21_revectored;
125 struct vm86plus_info_struct vm86plus;
126};
127
128#ifdef __KERNEL__
129
130#include <asm/ptrace.h>
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141struct kernel_vm86_regs {
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145 struct pt_regs pt;
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149 unsigned short es, __esh;
150 unsigned short ds, __dsh;
151 unsigned short fs, __fsh;
152 unsigned short gs, __gsh;
153};
154
155struct kernel_vm86_struct {
156 struct kernel_vm86_regs regs;
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164
165#define VM86_TSS_ESP0 flags
166 unsigned long flags;
167 unsigned long screen_bitmap;
168 unsigned long cpu_type;
169 struct revectored_struct int_revectored;
170 struct revectored_struct int21_revectored;
171 struct vm86plus_info_struct vm86plus;
172 struct pt_regs *regs32;
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183};
184
185#ifdef CONFIG_VM86
186
187void handle_vm86_fault(struct kernel_vm86_regs *, long);
188int handle_vm86_trap(struct kernel_vm86_regs *, long, int);
189struct pt_regs *save_v86_state(struct kernel_vm86_regs *);
190
191struct task_struct;
192void release_vm86_irqs(struct task_struct *);
193
194#else
195
196#define handle_vm86_fault(a, b)
197#define release_vm86_irqs(a)
198
199static inline int handle_vm86_trap(struct kernel_vm86_regs *a, long b, int c)
200{
201 return 0;
202}
203
204#endif
205
206#endif
207
208#endif
209