36 lines
917 B
C
36 lines
917 B
C
|
#pragma once
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
struct interrupt_frame {
|
||
|
|
uint32_t eip, cs;
|
||
|
|
uint32_t eflags;
|
||
|
|
uint32_t esp, ss;
|
||
|
|
uint32_t es, ds, fs, gs;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Real Mode helper macros */
|
||
|
|
/* segment:offset pair */
|
||
|
|
typedef uint32_t FARPTR;
|
||
|
|
|
||
|
|
/* Make a FARPTR from a segment and an offset */
|
||
|
|
#define MK_FP(seg, off) ((FARPTR) (((uint32_t) (seg) << 16) | (uint16_t) (off)))
|
||
|
|
|
||
|
|
/* Extract the segment part of a FARPTR */
|
||
|
|
#define FP_SEG(fp) (((FARPTR) fp) >> 16)
|
||
|
|
|
||
|
|
/* Extract the offset part of a FARPTR */
|
||
|
|
#define FP_OFF(fp) (((FARPTR) fp) & 0xffff)
|
||
|
|
|
||
|
|
/* Convert a segment:offset pair to a linear address */
|
||
|
|
#define FP_TO_LINEAR(seg, off) ((void*)(uintptr_t)((((uint32_t)seg) << 4) + ((uint32_t)off)))
|
||
|
|
|
||
|
|
#define EFLAG_IF ((uint32_t)1 << 9)
|
||
|
|
#define EFLAG_VM ((uint32_t)1 << 17)
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
__attribute__ ((interrupt))
|
||
|
|
void gpf_handler_v86(struct interrupt_frame *frame, unsigned long error_code);
|
||
|
|
|
||
|
|
void setup_interrupts();
|