Subversion Repositories Kolibri OS

Rev

Rev 5270 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
5270 serge 1 
#ifndef _UAPI_ASM_X86_VM86_H
2 
#define _UAPI_ASM_X86_VM86_H
3 
 
4 
/*
5 
 * I'm guessing at the VIF/VIP flag usage, but hope that this is how
6 
 * the Pentium uses them. Linux will return from vm86 mode when both
7 
 * VIF and VIP is set.
8 
 *
9 
 * On a Pentium, we could probably optimize the virtual flags directly
10 
 * in the eflags register instead of doing it "by hand" in vflags...
11 
 *
12 
 * Linus
13 
 */
14 
 
15 
#include
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
25 
 
26 
/*
27 
 * Return values for the 'vm86()' system call
28 
 */
29 
#define VM86_TYPE(retval)	((retval) & 0xff)
30 
#define VM86_ARG(retval)	((retval) >> 8)
31 
 
32 
#define VM86_SIGNAL	0	/* return due to signal */
33 
#define VM86_UNKNOWN	1	/* unhandled GP fault
34 
				   - IO-instruction or similar */
35 
#define VM86_INTx	2	/* int3/int x instruction (ARG = x) */
36 
#define VM86_STI	3	/* sti/popf/iret instruction enabled
37 
				   virtual interrupts */
38 
 
39 
/*
40 
 * Additional return values when invoking new vm86()
41 
 */
42 
#define VM86_PICRETURN	4	/* return due to pending PIC request */
43 
#define VM86_TRAP	6	/* return due to DOS-debugger request */
44 
 
45 
/*
46 
 * function codes when invoking new vm86()
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
55 
 
56 
/*
57 
 * This is the stack-layout seen by the user space program when we have
58 
 * done a translation of "SAVE_ALL" from vm86 mode. The real kernel layout
59 
 * is 'kernel_vm86_regs' (see below).
60 
 */
61 
 
62 
struct vm86_regs {
63 
/*
64 
 * normal regs, with special meaning for the segment descriptors..
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;
83 
/*
84 
 * these are specific to v86 mode:
85 
 */
86 
	unsigned short es, __esh;
87 
	unsigned short ds, __dsh;
88 
	unsigned short fs, __fsh;
89 
	unsigned short gs, __gsh;
90 
};
91 
 
92 
struct revectored_struct {
93 
	unsigned long __map[8];			/* 256 bits */
94 
};
95 
 
96 
struct 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 
};
104 
 
105 
/*
106 
 * flags masks
107 
 */
108 
#define VM86_SCREEN_BITMAP	0x0001
109 
 
110 
struct vm86plus_info_struct {
111 
	unsigned long force_return_for_pic:1;
112 
	unsigned long vm86dbg_active:1;       /* for debugger */
113 
	unsigned long vm86dbg_TFpendig:1;     /* for debugger */
114 
	unsigned long unused:28;
115 
	unsigned long is_vm86pus:1;	      /* for vm86 internal use */
116 
	unsigned char vm86dbg_intxxtab[32];   /* for debugger */
117 
};
118 
struct 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 
 
129 
#endif /* _UAPI_ASM_X86_VM86_H */