root / lab4 / .minix-src / include / i386 / int86.h @ 14
History | View | Annotate | Download (2.24 KB)
| 1 |
#ifndef _INT86_H
|
|---|---|
| 2 |
#define _INT86_H
|
| 3 |
|
| 4 |
#if defined(__i386__)
|
| 5 |
|
| 6 |
# include <sys/types.h> |
| 7 |
|
| 8 |
/* registers used in an PC real mode call for BIOS services */
|
| 9 |
typedef struct reg86 { |
| 10 |
union {
|
| 11 |
/* 32-bit (double word [dword] or long word) access */
|
| 12 |
struct {
|
| 13 |
u32_t ef; /* 32-bit flags (output only) */
|
| 14 |
u32_t vec; /* Driver vector (input only) */
|
| 15 |
u32_t : 32; /* unused */ |
| 16 |
u32_t eax; /* 32-bit general register */
|
| 17 |
u32_t ebx; /* 32-bit general register */
|
| 18 |
u32_t ecx; /* 32-bit general register */
|
| 19 |
u32_t edx; /* 32-bit general register */
|
| 20 |
u32_t esi; /* 32-bit index register */
|
| 21 |
u32_t edi; /* 32-bit index register */
|
| 22 |
u32_t ebp; /* 32-bit pointer register */
|
| 23 |
}; |
| 24 |
|
| 25 |
/* 16-bit (word) access */
|
| 26 |
struct {
|
| 27 |
u16_t f; /* 16-bit flags (output only) */
|
| 28 |
u16_t : 16; /* unused */ |
| 29 |
u16_t off, seg; /* Driver vector (input only) */
|
| 30 |
u16_t ds, es; /* DS and ES real mode segment registers */
|
| 31 |
u16_t ax; /* 16-bit general register */
|
| 32 |
u16_t : 16; /* unused */ |
| 33 |
u16_t bx; /* 16-bit general register */
|
| 34 |
u16_t : 16; /* unused */ |
| 35 |
u16_t cx; /* 16-bit general register */
|
| 36 |
u16_t : 16; /* unused */ |
| 37 |
u16_t dx; /* 16-bit general register */
|
| 38 |
u16_t : 16; /*unused */ |
| 39 |
u16_t si; /* 16-bit index register */
|
| 40 |
u16_t : 16; /*unused */ |
| 41 |
u16_t di; /* 16-bit index register */
|
| 42 |
u16_t : 16; /* unused */ |
| 43 |
u16_t bp; /* 16-bit pointer register */
|
| 44 |
u16_t : 16; /*unused */ |
| 45 |
}; |
| 46 |
|
| 47 |
/* 8-bit (byte) access */
|
| 48 |
struct {
|
| 49 |
u8_t intno; /* Interrupt number (input only) */
|
| 50 |
u8_t : 8; /* unused */ |
| 51 |
u16_t : 16; /* unused */ |
| 52 |
u32_t : 32; /* unused */ |
| 53 |
u32_t : 32; /* unused */ |
| 54 |
u8_t al, ah; /* 8-bit general registers */
|
| 55 |
u16_t : 16; /* unused */ |
| 56 |
u8_t bl, bh; /* 8-bit general registers */
|
| 57 |
u16_t : 16; /* unused */ |
| 58 |
u8_t cl, ch; /* 8-bit general registers */
|
| 59 |
u16_t : 16; /* unused */ |
| 60 |
u8_t dl, dh; /* 8-bit general registers */
|
| 61 |
u16_t : 16; /* unused */ |
| 62 |
u32_t : 32; /* unused */ |
| 63 |
u32_t : 32; /* unused */ |
| 64 |
u32_t : 32; /* unused */ |
| 65 |
}; |
| 66 |
}; |
| 67 |
} reg86_t; |
| 68 |
|
| 69 |
#endif
|
| 70 |
|
| 71 |
#endif /* _INT86_H */ |