mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-05-06 15:36:59 +00:00
530388db30
This commit fixed following violations: - Procedure has more than one exit point: free_irq_vector/request_irq/dispatch_interrupt - goto detected: dispatch_interrupt - Pointer param should be declared pointer to const: fixup_idt - basic type declaration used: fixup_idt Tracked-On: #861 Signed-off-by: Yan, Like <like.yan@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
80 lines
1.6 KiB
C
80 lines
1.6 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef IDT_H
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#define IDT_H
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/*
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* IDT is defined in assembly so we handle exceptions as early as possible.
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*/
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/* Interrupt Descriptor Table (LDT) selectors are 16 bytes on x86-64 instead of
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* 8 bytes.
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*/
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#define X64_IDT_DESC_SIZE (0x10U)
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/* Number of the HOST IDT entries */
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#define HOST_IDT_ENTRIES (0x100U)
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/* Size of the IDT */
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#define HOST_IDT_SIZE (HOST_IDT_ENTRIES * X64_IDT_DESC_SIZE)
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#ifndef ASSEMBLER
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/*
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* Definition of an 16 byte IDT selector.
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*/
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union idt_64_descriptor {
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uint64_t value;
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struct {
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union {
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uint32_t value;
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struct {
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uint32_t offset_15_0:16;
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uint32_t segment_sel:16;
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} bits;
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} low32;
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union {
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uint32_t value;
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struct {
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uint32_t ist:3;
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uint32_t bit_3_clr:1;
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uint32_t bit_4_clr:1;
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uint32_t bits_5_7_clr:3;
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uint32_t type:4;
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uint32_t bit_12_clr:1;
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uint32_t dpl:2;
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uint32_t present:1;
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uint32_t offset_31_16:16;
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} bits;
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} high32;
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uint32_t offset_63_32;
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uint32_t rsvd;
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} fields;
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} __aligned(8);
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/*****************************************************************************
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*
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* Definition of the IDT.
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*
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*****************************************************************************/
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struct host_idt {
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union idt_64_descriptor host_idt_descriptors[HOST_IDT_ENTRIES];
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} __aligned(8);
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/*
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* Definition of the IDT descriptor.
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*/
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struct host_idt_descriptor {
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uint16_t len;
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struct host_idt *idt;
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} __packed;
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extern struct host_idt HOST_IDT;
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extern struct host_idt_descriptor HOST_IDTR;
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#endif /* end #ifndef ASSEMBLER */
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#endif /* IDT_H */
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