mirror of
https://github.com/Fennix-Project/Kernel.git
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86a119ea51
The userspace process may map pages where the kernel has allocated data and cause a crash. This patch fixes this issue by having a separate IRQ handler which sets the kernel page table at the start of SchedulerInterruptHandler() and restores it in SchedulerHandlerStub() function.
86 lines
2.4 KiB
C++
86 lines
2.4 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_INTERRUPTS_H__
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#define __FENNIX_KERNEL_INTERRUPTS_H__
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#include <types.h>
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#include <cpu.hpp>
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#include <pci.hpp>
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namespace Interrupts
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{
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#ifdef DEBUG // For performance reasons
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#define INT_FRAMES_MAX 512
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#else
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#define INT_FRAMES_MAX 8
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#endif
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#if defined(a64)
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/* APIC::APIC */ extern void *apic[255]; // MAX_CPU
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/* APIC::Timer */ extern void *apicTimer[255]; // MAX_CPU
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#elif defined(a32)
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/* APIC::APIC */ extern void *apic[255]; // MAX_CPU
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/* APIC::Timer */ extern void *apicTimer[255]; // MAX_CPU
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#elif defined(aa64)
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#endif
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void Initialize(int Core);
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void Enable(int Core);
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void InitializeTimer(int Core);
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void RemoveAll();
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void AddHandler(void (*Callback)(CPU::TrapFrame *),
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int InterruptNumber, void *ctx = nullptr,
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bool Critical = false);
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void RemoveHandler(void (*Callback)(CPU::TrapFrame *),
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int InterruptNumber);
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void RemoveHandler(void (*Callback)(CPU::TrapFrame *));
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void RemoveHandler(int InterruptNumber);
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class Handler
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{
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private:
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int InterruptNumber;
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protected:
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/**
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* @brief Set a new interrupt number.
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* @param InterruptNumber The interrupt number. NOT the IRQ number! (IRQ0 != 32)
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*/
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void SetInterruptNumber(int InterruptNumber) { this->InterruptNumber = InterruptNumber; }
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int GetInterruptNumber() { return this->InterruptNumber; }
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/**
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* @brief Create a new interrupt handler.
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* @param InterruptNumber The interrupt number. NOT the IRQ number! (IRQ0 != 32)
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*/
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Handler(int InterruptNumber, bool Critical = false);
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Handler(PCI::PCIDevice Device, bool Critical = false);
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Handler();
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~Handler();
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public:
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virtual void OnInterruptReceived(CPU::TrapFrame *Frame);
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virtual void OnInterruptReceived(CPU::SchedulerFrame *Frame);
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};
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}
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#endif // !__FENNIX_KERNEL_INTERRUPTS_H__
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