mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-16 01:49:32 +00:00
69 lines
2.8 KiB
C++
69 lines
2.8 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <mesosphere/kern_common.hpp>
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#include <mesosphere/kern_k_auto_object.hpp>
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#include <mesosphere/kern_slab_helpers.hpp>
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namespace ams::kern {
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class KTransferMemory final : public KAutoObjectWithSlabHeapAndContainer<KTransferMemory, KAutoObjectWithList> {
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MESOSPHERE_AUTOOBJECT_TRAITS(KTransferMemory, KAutoObject);
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private:
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util::TypedStorage<KPageGroup> m_page_group;
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KProcess *m_owner;
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KProcessAddress m_address;
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KLightLock m_lock;
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ams::svc::MemoryPermission m_owner_perm;
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bool m_is_initialized;
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bool m_is_mapped;
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public:
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explicit KTransferMemory() : m_owner(nullptr), m_address(Null<KProcessAddress>), m_owner_perm(ams::svc::MemoryPermission_None), m_is_initialized(false), m_is_mapped(false) {
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/* ... */
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}
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Result Initialize(KProcessAddress addr, size_t size, ams::svc::MemoryPermission own_perm);
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void Finalize();
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bool IsInitialized() const { return m_is_initialized; }
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uintptr_t GetPostDestroyArgument() const { return reinterpret_cast<uintptr_t>(m_owner); }
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static void PostDestroy(uintptr_t arg);
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Result Map(KProcessAddress address, size_t size, ams::svc::MemoryPermission map_perm);
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Result Unmap(KProcessAddress address, size_t size);
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KProcess *GetOwner() const { return m_owner; }
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KProcessAddress GetSourceAddress() { return m_address; }
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size_t GetSize() const { return m_is_initialized ? GetReference(m_page_group).GetNumPages() * PageSize : 0; }
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constexpr uintptr_t GetHint() const {
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/* Get memory size. */
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const size_t size = this->GetSize();
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/* TODO: Is this architecture specific? */
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if (size >= 2_MB) {
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return GetInteger(m_address) & (2_MB - 1);
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} else if (size >= 64_KB) {
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return GetInteger(m_address) & (64_KB - 1);
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} else if (size >= 4_KB) {
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return GetInteger(m_address) & (4_KB - 1);
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} else {
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return 0;
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}
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}
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};
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}
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