94 lines
1.3 KiB
C
94 lines
1.3 KiB
C
#ifndef REGISTERS_H
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#define REGISTERS_H
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#include "stdint.h"
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#include "compiler.h"
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/* Basic 16-bit and 32-bit register types */
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typedef union {
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struct {
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union {
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uint8_t l;
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uint8_t byte;
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};
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uint8_t h;
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} PACKED;
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uint16_t word;
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} PACKED reg16_t;
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typedef union {
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reg16_t;
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uint32_t dword;
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} PACKED reg32_t;
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/* As created by pushal / read by popal */
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struct i386_regs {
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union {
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uint16_t di;
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uint32_t edi;
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};
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union {
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uint16_t si;
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uint32_t esi;
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};
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union {
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uint16_t bp;
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uint32_t ebp;
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};
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union {
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uint16_t sp;
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uint32_t esp;
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};
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union {
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struct {
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uint8_t bl;
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uint8_t bh;
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} PACKED;
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uint16_t bx;
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uint32_t ebx;
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};
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union {
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struct {
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uint8_t dl;
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uint8_t dh;
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} PACKED;
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uint16_t dx;
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uint32_t edx;
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};
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union {
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struct {
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uint8_t cl;
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uint8_t ch;
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} PACKED;
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uint16_t cx;
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uint32_t ecx;
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};
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union {
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struct {
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uint8_t al;
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uint8_t ah;
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} PACKED;
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uint16_t ax;
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uint32_t eax;
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};
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} PACKED;
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/* Our pushal/popal equivalent for segment registers */
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struct i386_seg_regs {
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uint16_t cs;
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uint16_t ss;
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uint16_t ds;
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uint16_t es;
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uint16_t fs;
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uint16_t gs;
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} PACKED;
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/* All i386 registers, as passed in by prot_call or kir_call */
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struct i386_all_regs {
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struct i386_seg_regs;
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struct i386_regs;
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uint32_t i386_flags;
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} PACKED;
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#endif /* REGISTERS_H */
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