66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
/* Copyright (c) 2026, Mirocom Laboratories
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* All rights reserved.
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*
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* The following sources are CONFIDENTIAL and PROPRIETARY
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* property of Mirocom Laboratories. Unauthorized copying,
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* use, distribution or modification of this file, in whole
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* and in part, is strictly prohibited without the prior written
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* consent from Mirocom Laboratories.
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*/
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#ifndef _MACHINE_IDT_H_
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#define _MACHINE_IDT_H_ 1
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#ifndef __ASSEMBLER__
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#include <sys/types.h>
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#include <sys/cdefs.h>
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#endif /* !__ASSEMBLER__ */
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#define IDT_INT_GATE 0x8E
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#define IDT_TRAP_GATE 0x8F
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#define IDT_USER_GATE 0xEE
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#ifndef __ASSEMBLER__
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/*
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* 64-bit interrupt gate descriptor
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*/
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struct idt_gate {
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uint16_t offset_low;
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uint16_t segment_sel;
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uint8_t ist : 3;
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uint8_t zero : 5;
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uint8_t type : 4;
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uint8_t zero1 : 1;
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uint8_t dpl : 2;
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uint8_t p : 1;
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uint16_t offset_mid;
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uint32_t offset_high;
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uint32_t reserved;
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};
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/*
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* Points to
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*/
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struct __packed idtr {
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uint16_t limit;
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uintptr_t base;
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};
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/*
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* Set an IDT gate desriptor
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*
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* @vector: Interrupt vector to set
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* @isr: Interrupt service routine base
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* @type: Gate descriptor type
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* @ist: Interrupt stack table index
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*/
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void md_idt_set_gate(uint8_t vector, uintptr_t isr, uint8_t type, uint8_t ist);
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/*
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* Load the IDT
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*/
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void md_idt_load(void);
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#endif /* !__ASSEMBLER__ */
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#endif /* !_MACHINE_IDT_H_ */
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