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kern: begin skeletoning page table types

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This commit is contained in:
Michael Scire 2020-02-09 03:45:45 -08:00
parent 3284656aad
commit 50b8189e7f
17 changed files with 599 additions and 2 deletions
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7
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu.hpp
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@ -108,9 +108,16 @@ namespace ams::kern::arm64::cpu {
NOINLINE void SynchronizeAllCores();
/* Cache management helpers. */
void ClearPageToZeroImpl(void *);
void FlushEntireDataCacheShared();
void FlushEntireDataCacheLocal();
ALWAYS_INLINE void ClearPageToZero(void *page) {
MESOSPHERE_ASSERT(util::IsAligned(reinterpret_cast<uintptr_t>(page), PageSize));
MESOSPHERE_ASSERT(page != nullptr);
ClearPageToZeroImpl(page);
}
ALWAYS_INLINE void InvalidateEntireTlb() {
__asm__ __volatile__("tlbi vmalle1is" ::: "memory");
EnsureInstructionConsistency();

41
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table.hpp Normal file
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@ -0,0 +1,41 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <mesosphere/kern_common.hpp>
#include <mesosphere/kern_select_cpu.hpp>
#include <mesosphere/kern_k_page_table_base.hpp>
#include <mesosphere/kern_k_page_group.hpp>
#include <mesosphere/kern_k_page_table_manager.hpp>
namespace ams::kern::arm64 {
class KPageTable : public KPageTableBase {
NON_COPYABLE(KPageTable);
NON_MOVEABLE(KPageTable);
private:
KPageTableManager *manager;
u64 ttbr;
u8 asid;
public:
constexpr KPageTable() : KPageTableBase(), manager(), ttbr(), asid() { /* ... */ }
static NOINLINE void Initialize(s32 core_id);
Result InitializeForKernel(void *table, KVirtualAddress start, KVirtualAddress end);
Result Finalize();
};
}

42
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table_impl.hpp Normal file
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@ -0,0 +1,42 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <mesosphere/kern_common.hpp>
#include <mesosphere/kern_select_cpu.hpp>
#include <mesosphere/kern_k_typed_address.hpp>
#include <mesosphere/kern_k_memory_layout.hpp>
namespace ams::kern::arm64 {
/* TODO: This seems worse than KInitialPageTable. Can we fulfill Nintendo's API using KInitialPageTable? */
/* KInitialPageTable is significantly nicer, but doesn't have KPageTableImpl's traversal semantics. */
/* Perhaps we could implement those on top of it? */
class KPageTableImpl {
NON_COPYABLE(KPageTableImpl);
NON_MOVEABLE(KPageTableImpl);
private:
u64 *table;
bool is_kernel;
u32 num_entries;
public:
constexpr KPageTableImpl() : table(), is_kernel(), num_entries() { /* ... */ }
void InitializeForKernel(void *tb, KVirtualAddress start, KVirtualAddress end);
u64 *Finalize();
};
}

26
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_process_page_table.hpp Normal file
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@ -0,0 +1,26 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <mesosphere/kern_common.hpp>
#include <mesosphere/arch/arm64/kern_k_page_table.hpp>
namespace ams::kern::arm64 {
class KProcessPageTable {
};
}

34
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_supervisor_page_table.hpp Normal file
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@ -0,0 +1,34 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <mesosphere/kern_common.hpp>
#include <mesosphere/kern_select_cpu.hpp>
#include <mesosphere/arch/arm64/kern_k_page_table.hpp>
namespace ams::kern::arm64 {
class KSupervisorPageTable {
private:
KPageTable page_table;
u64 ttbr0[cpu::NumCores];
public:
constexpr KSupervisorPageTable() : page_table(), ttbr0() { /* ... */ }
void Initialize(s32 core_id);
void Finalize(s32 core_id);
};
}