44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
#pragma once
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#include <stdint.h>
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struct interrupt_frame {
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uint32_t eip, cs;
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uint32_t eflags;
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uint32_t esp, ss;
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uint32_t es, ds, fs, gs;
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};
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/* Real Mode helper macros */
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/* segment:offset pair */
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typedef uint32_t FARPTR;
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/* Make a FARPTR from a segment and an offset */
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#define MK_FP(seg, off) ((FARPTR) (((uint32_t) (seg) << 16) | (uint16_t) (off)))
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/* Extract the segment part of a FARPTR */
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#define FP_SEG(fp) (((FARPTR) fp) >> 16)
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/* Extract the offset part of a FARPTR */
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#define FP_OFF(fp) (((FARPTR) fp) & 0xffff)
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/* Convert a segment:offset pair to a linear address */
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#define FP_TO_LINEAR(seg, off) ((void*)(uintptr_t)((((uint32_t)seg) << 4) + ((uint32_t)off)))
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#define EFLAG_IF ((uint32_t)1 << 9)
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#define EFLAG_VM ((uint32_t)1 << 17)
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FARPTR i386LinearToFp(void *ptr);
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__attribute((__no_caller_saved_registers__))
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void kbd_wait();
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__attribute((__no_caller_saved_registers__))
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uint8_t get_key();
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__attribute((__no_caller_saved_registers__))
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uint16_t get_scancode();
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__attribute__ ((interrupt))
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void gpf_handler_v86(struct interrupt_frame *frame, unsigned long error_code);
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void setup_interrupts();
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