rulimine/stage2/lib/real.h

32 lines
661 B
C

#ifndef __LIB__REAL_H__
#define __LIB__REAL_H__
#include <stdint.h>
#define rm_seg(x) ((uint16_t)(((int)x & 0xffff0) >> 4))
#define rm_off(x) ((uint16_t)(((int)x & 0x0000f) >> 0))
#define rm_desegment(seg, off) (((uint32_t)(seg) << 4) + (uint32_t)(off))
#define EFLAGS_CF (1 << 0)
#define EFLAGS_ZF (1 << 6)
struct rm_regs {
uint16_t gs;
uint16_t fs;
uint16_t es;
uint16_t ds;
uint32_t eflags;
uint32_t ebp;
uint32_t edi;
uint32_t esi;
uint32_t edx;
uint32_t ecx;
uint32_t ebx;
uint32_t eax;
} __attribute__((packed));
void rm_int(uint8_t int_no, struct rm_regs *out_regs, struct rm_regs *in_regs);
#endif