xt-sys/exectos
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Add GDT, IDT and TSS related structures
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This commit is contained in:
Rafal Kupiec
2023-01-07 13:33:16 +01:00
parent cdef64d1e6
commit f74ba62f24
5 changed files with 176 additions and 0 deletions
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92
sdk/xtdk/i686/ketypes.h
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@@ -9,6 +9,15 @@
#ifndef __XTDK_I686_KETYPES_H
#define __XTDK_I686_KETYPES_H
#include <xttypes.h>
/* IOPM Definitions */
#define IOPM_COUNT 1
#define IOPM_SIZE 8192
#define IOPM_FULL_SIZE 8196
#define IOPM_ACCESS_MAP_NONE 0
#define IOPM_DIRECTION_MAP_SIZE 32
/* Static Kernel-Mode address start */
#define KSEG0_BASE 0x80000000
@@ -19,4 +28,87 @@
/* XTOS Kernel stack size */
#define KERNEL_STACK_SIZE 0x4000
/* Global Descriptor Table (GDT) entry structure definition */
typedef struct _KGDTENTRY
{
USHORT LimitLow;
USHORT BaseLow;
union
{
struct
{
UCHAR BaseMiddle;
UCHAR Flags1;
UCHAR Flags2;
UCHAR BaseHigh;
} Bytes;
struct
{
ULONG BaseMid:8;
ULONG Type:5;
ULONG Dpl:2;
ULONG Present:1;
ULONG LimitHigh:4;
ULONG System:1;
ULONG Reserved0:1;
ULONG DefaultBig:1;
ULONG Granularity:1;
ULONG BaseHigh:8;
} Bits;
} HighWord;
} KGDTENTRY, *PKGDTENTRY;
/* Interrupt Descriptor Table (IDT) entry structure definition */
typedef struct _KIDTENTRY {
USHORT Offset;
USHORT Selector;
USHORT Access;
USHORT ExtendedOffset;
} KIDTENTRY, *PKIDTENTRY;
/* Interrupt direction access map structure definition */
typedef struct _KIIO_ACCESS_MAP {
UCHAR DirectionMap[IOPM_DIRECTION_MAP_SIZE];
UCHAR IoMap[IOPM_FULL_SIZE];
} KIIO_ACCESS_MAP, *PKIIO_ACCESS_MAP;
/* Task State Segment (TSS) structure definition */
typedef struct _KTSS {
USHORT Backlink;
USHORT Reserved0;
ULONG Esp0;
USHORT Ss0;
USHORT Reserved1;
ULONG NotUsed1[4];
ULONG CR3;
ULONG Eip;
ULONG EFlags;
ULONG Eax;
ULONG Ecx;
ULONG Edx;
ULONG Ebx;
ULONG Esp;
ULONG Ebp;
ULONG Esi;
ULONG Edi;
USHORT Es;
USHORT Reserved2;
USHORT Cs;
USHORT Reserved3;
USHORT Ss;
USHORT Reserved4;
USHORT Ds;
USHORT Reserved5;
USHORT Fs;
USHORT Reserved6;
USHORT Gs;
USHORT Reserved7;
USHORT LDT;
USHORT Reserved8;
USHORT Flags;
USHORT IoMapBase;
KIIO_ACCESS_MAP IoMaps[IOPM_COUNT];
UCHAR IntDirectionMap[IOPM_DIRECTION_MAP_SIZE];
} KTSS, *PKTSS;
#endif /* __XTDK_I686_KETYPES_H */

4
sdk/xtdk/i686/xtstruct.h
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@@ -14,5 +14,9 @@
typedef struct _CPUID_REGISTERS CPUID_REGISTERS, *PCPUID_REGISTERS;
typedef struct _HARDWARE_PTE HARDWARE_PTE, *PHARDWARE_PTE;
typedef struct _HARDWARE_PTE_PAE HARDWARE_PTE_PAE, *PHARDWARE_PTE_PAE;
typedef struct _KGDTENTRY KGDTENTRY, *PKGDTENTRY;
typedef struct _KIDTENTRY KIDTENTRY, *PKIDTENTRY;
typedef struct _KIIO_ACCESS_MAP KIIO_ACCESS_MAP, *PKIIO_ACCESS_MAP;
typedef struct _KTSS KTSS, *PKTSS;
#endif /* __XTDK_I686_XTSTRUCT_H */