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Architecture
aarch64
amd64
Bootstrap
Memory
cpu
AdvancedProgrammableInterruptController.cpp
GlobalDescriptorTable.cpp
InterruptDescriptorTable.cpp
SMPTrampoline.s
SymmetricMultiprocessing.cpp
apic.hpp
gdt.hpp
idt.hpp
MultipleAPICDescriptionTable.cpp
SystemCalls.cpp
linker.ld
i386
Core
ExecutionLayer
FileSystem
Files
KernelShell
Library
Modules
Network
Profiling
SystemCalls
Tasking
Tests
Virtualization
include
include_std
.gitignore
DAPI.hpp
Doxyfile
Fex.hpp
Kernel.cpp
KernelConfig.cpp
KernelThread.cpp
LICENSE
Makefile
README.md
dump.sh
ipc.h
kernel.h
syscalls.h
68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef __FENNIX_KERNEL_GDT_H__
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#define __FENNIX_KERNEL_GDT_H__
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#include <types.h>
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#include <cpu/x86/x64/SegmentDescriptors.hpp>
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namespace GlobalDescriptorTable
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{
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struct TaskStateSegment
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{
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uint32_t Reserved0 __aligned(16);
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uint64_t StackPointer[3];
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uint64_t Reserved1;
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uint64_t InterruptStackTable[7];
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uint64_t Reserved2;
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uint16_t Reserved3;
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uint16_t IOMapBaseAddressOffset;
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} __packed;
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struct GlobalDescriptorTableEntries
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{
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uint64_t Null;
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CodeSegmentDescriptor Code;
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DataSegmentDescriptor Data;
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DataSegmentDescriptor UserData;
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CodeSegmentDescriptor UserCode;
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SystemSegmentDescriptor TaskStateSegment;
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} __packed;
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struct GlobalDescriptorTableDescriptor
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{
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uint16_t Limit;
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GlobalDescriptorTableEntries *BaseAddress;
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} __packed;
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extern void *CPUStackPointer[];
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extern TaskStateSegment tss[];
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void Init(int Core);
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void SetKernelStack(void *Stack);
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void *GetKernelStack();
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}
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#define GDT_KERNEL_CODE offsetof(GlobalDescriptorTable::GlobalDescriptorTableEntries, Code)
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#define GDT_KERNEL_DATA offsetof(GlobalDescriptorTable::GlobalDescriptorTableEntries, Data)
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#define GDT_USER_CODE (offsetof(GlobalDescriptorTable::GlobalDescriptorTableEntries, UserCode) | 3)
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#define GDT_USER_DATA (offsetof(GlobalDescriptorTable::GlobalDescriptorTableEntries, UserData) | 3)
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#define GDT_TSS (offsetof(GlobalDescriptorTable::GlobalDescriptorTableEntries, TaskStateSegment) | 3)
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#endif // !__FENNIX_KERNEL_GDT_H__
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