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Kernel: Make MemoryManager compile on aarch64

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This commit is contained in:
James Mintram 2022-04-02 23:56:20 +01:00 • committed by Brian Gianforcaro
parent 6299a69253
commit d79c772c87
10 changed files with 119 additions and 22 deletions
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2
Kernel/Arch/aarch64/CrashHandler.cpp
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@ -4,6 +4,8 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Forward.h>
#include <Kernel/Arch/CPU.h>
#include <Kernel/Arch/RegisterState.h>

33
Kernel/Arch/aarch64/PageDirectory.cpp Normal file
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@ -0,0 +1,33 @@
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2018-2022, James Mintram <me@jamesrm.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Memory/PageDirectory.h>
namespace Kernel::Memory {
void PageDirectory::register_page_directory(PageDirectory*)
{
}
void PageDirectory::deregister_page_directory(PageDirectory*)
{
}
RefPtr<PageDirectory> PageDirectory::find_current()
{
return nullptr;
}
void activate_kernel_page_directory(PageDirectory const&)
{
}
void activate_page_directory(PageDirectory const&, Thread*)
{
}
}

14
Kernel/Arch/aarch64/Processor.h
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@ -13,8 +13,14 @@
#include <Kernel/Arch/ProcessorSpecificDataID.h>
class VirtualAddress;
namespace Kernel {
namespace Memory {
class PageDirectory;
};
class Thread;
// FIXME This needs to go behind some sort of platform abstraction
@ -41,6 +47,14 @@ public:
return false;
}
ALWAYS_INLINE static void flush_tlb_local(VirtualAddress&, size_t&)
{
}
ALWAYS_INLINE static void flush_tlb(Memory::PageDirectory const*, VirtualAddress const&, size_t)
{
}
ALWAYS_INLINE static u32 current_id()
{
return 0;

2
Kernel/Arch/aarch64/RegisterState.h
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@ -9,6 +9,8 @@
namespace Kernel {
struct RegisterState {
FlatPtr userspace_sp() const { return 0; }
FlatPtr ip() const { return 0; }
};
struct DebugRegisterState {

50
Kernel/Arch/x86/common/PageDirectory.cpp Normal file
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@ -0,0 +1,50 @@
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2018-2022, James Mintram <me@jamesrm.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Singleton.h>
#include <Kernel/Memory/PageDirectory.h>
#include <Kernel/Thread.h>
namespace Kernel::Memory {
static Singleton<IntrusiveRedBlackTree<&PageDirectory::m_tree_node>> s_cr3_map;
static IntrusiveRedBlackTree<&PageDirectory::m_tree_node>& cr3_map()
{
VERIFY_INTERRUPTS_DISABLED();
return *s_cr3_map;
}
void PageDirectory::register_page_directory(PageDirectory* directory)
{
cr3_map().insert(directory->cr3(), *directory);
}
void PageDirectory::deregister_page_directory(PageDirectory* directory)
{
cr3_map().remove(directory->cr3());
}
RefPtr<PageDirectory> PageDirectory::find_current()
{
SpinlockLocker lock(s_mm_lock);
return cr3_map().find(read_cr3());
}
void activate_kernel_page_directory(PageDirectory const& pgd)
{
write_cr3(pgd.cr3());
}
void activate_page_directory(PageDirectory const& pgd, Thread* current_thread)
{
current_thread->regs().cr3 = pgd.cr3();
write_cr3(pgd.cr3());
}
}