root / lab4 / .minix-src / include / i386 / int86.h @ 13
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#ifndef _INT86_H
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#define _INT86_H
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#if defined(__i386__)
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# include <sys/types.h> |
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/* registers used in an PC real mode call for BIOS services */
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typedef struct reg86 { |
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union {
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/* 32-bit (double word [dword] or long word) access */
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struct {
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u32_t ef; /* 32-bit flags (output only) */
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u32_t vec; /* Driver vector (input only) */
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u32_t : 32; /* unused */ |
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u32_t eax; /* 32-bit general register */
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u32_t ebx; /* 32-bit general register */
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u32_t ecx; /* 32-bit general register */
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u32_t edx; /* 32-bit general register */
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u32_t esi; /* 32-bit index register */
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u32_t edi; /* 32-bit index register */
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u32_t ebp; /* 32-bit pointer register */
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}; |
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/* 16-bit (word) access */
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struct {
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u16_t f; /* 16-bit flags (output only) */
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u16_t : 16; /* unused */ |
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u16_t off, seg; /* Driver vector (input only) */
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u16_t ds, es; /* DS and ES real mode segment registers */
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u16_t ax; /* 16-bit general register */
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u16_t : 16; /* unused */ |
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u16_t bx; /* 16-bit general register */
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u16_t : 16; /* unused */ |
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u16_t cx; /* 16-bit general register */
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u16_t : 16; /* unused */ |
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u16_t dx; /* 16-bit general register */
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u16_t : 16; /*unused */ |
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u16_t si; /* 16-bit index register */
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u16_t : 16; /*unused */ |
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u16_t di; /* 16-bit index register */
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u16_t : 16; /* unused */ |
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u16_t bp; /* 16-bit pointer register */
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u16_t : 16; /*unused */ |
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}; |
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/* 8-bit (byte) access */
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struct {
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u8_t intno; /* Interrupt number (input only) */
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u8_t : 8; /* unused */ |
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u16_t : 16; /* unused */ |
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u32_t : 32; /* unused */ |
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u32_t : 32; /* unused */ |
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u8_t al, ah; /* 8-bit general registers */
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u16_t : 16; /* unused */ |
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u8_t bl, bh; /* 8-bit general registers */
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u16_t : 16; /* unused */ |
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u8_t cl, ch; /* 8-bit general registers */
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u16_t : 16; /* unused */ |
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u8_t dl, dh; /* 8-bit general registers */
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u16_t : 16; /* unused */ |
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u32_t : 32; /* unused */ |
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u32_t : 32; /* unused */ |
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u32_t : 32; /* unused */ |
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}; |
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}; |
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} reg86_t; |
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#endif
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#endif /* _INT86_H */ |