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36 lines
818 B
C++
36 lines
818 B
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/InterruptDisabler.h>
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#include <Kernel/Memory/MemoryManager.h>
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#include <Kernel/Memory/ScopedAddressSpaceSwitcher.h>
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namespace Kernel {
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ScopedAddressSpaceSwitcher::ScopedAddressSpaceSwitcher(Process& process)
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{
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VERIFY(Thread::current() != nullptr);
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#if ARCH(I386) || ARCH(X86_64)
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m_previous_cr3 = read_cr3();
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#elif ARCH(AARC64)
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TODO_AARCH64();
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#endif
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Memory::MemoryManager::enter_process_address_space(process);
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}
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ScopedAddressSpaceSwitcher::~ScopedAddressSpaceSwitcher()
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{
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InterruptDisabler disabler;
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#if ARCH(I386) || ARCH(X86_64)
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Thread::current()->regs().cr3 = m_previous_cr3;
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write_cr3(m_previous_cr3);
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#elif ARCH(AARC64)
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TODO_AARCH64();
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#endif
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}
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}
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