2014-07-05 06:55:39 +02:00
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// Copyright 2014 Citra Emulator Project
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2014-12-17 06:38:14 +01:00
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// Licensed under GPLv2 or any later version
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2014-11-19 09:49:13 +01:00
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// Refer to the license.txt file included.
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2014-07-05 06:55:39 +02:00
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2018-07-31 14:06:09 +02:00
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#include "common/assert.h"
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2020-04-09 00:53:52 +02:00
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#include "core/core.h"
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2021-02-13 02:58:31 +01:00
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#include "core/hle/kernel/k_page_table.h"
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2021-02-05 02:06:54 +01:00
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#include "core/hle/kernel/k_scoped_resource_reservation.h"
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2021-02-06 08:14:31 +01:00
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#include "core/hle/kernel/k_shared_memory.h"
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2018-09-25 02:01:45 +02:00
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#include "core/hle/kernel/kernel.h"
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2014-07-05 06:55:39 +02:00
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namespace Kernel {
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2021-04-04 08:22:07 +02:00
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KSharedMemory::KSharedMemory(KernelCore& kernel) : KAutoObjectWithSlabHeapAndContainer{kernel} {}
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2018-08-03 05:37:44 +02:00
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2021-02-06 08:14:31 +01:00
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KSharedMemory::~KSharedMemory() {
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2021-02-13 01:05:24 +01:00
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kernel.GetSystemResourceLimit()->Release(LimitableResource::PhysicalMemory, size);
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}
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2018-08-03 05:37:44 +02:00
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2021-04-04 08:22:07 +02:00
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ResultCode KSharedMemory::Initialize(KernelCore& kernel_, Core::DeviceMemory& device_memory_,
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Process* owner_process_, KPageLinkedList&& page_list_,
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KMemoryPermission owner_permission_,
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KMemoryPermission user_permission_, PAddr physical_address_,
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std::size_t size_, std::string name_) {
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2014-07-05 06:55:39 +02:00
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2021-04-04 08:22:07 +02:00
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resource_limit = kernel_.GetSystemResourceLimit();
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2021-02-05 02:06:54 +01:00
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KScopedResourceReservation memory_reservation(resource_limit, LimitableResource::PhysicalMemory,
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2021-04-04 08:22:07 +02:00
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size_);
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2021-02-05 02:06:54 +01:00
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ASSERT(memory_reservation.Succeeded());
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2021-04-04 08:22:07 +02:00
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owner_process = owner_process_;
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device_memory = &device_memory_;
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page_list = std::move(page_list_);
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owner_permission = owner_permission_;
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user_permission = user_permission_;
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physical_address = physical_address_;
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size = size_;
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name = name_;
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is_initialized = true;
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2016-05-09 00:10:53 +02:00
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2021-02-05 02:06:54 +01:00
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memory_reservation.Commit();
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2021-04-04 08:22:07 +02:00
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return RESULT_SUCCESS;
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}
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void KSharedMemory::Finalize() {
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///* Get the number of pages. */
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// const size_t num_pages = m_page_group.GetNumPages();
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// const size_t size = num_pages * PageSize;
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///* Close and finalize the page group. */
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// m_page_group.Close();
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// m_page_group.Finalize();
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// Release the memory reservation.
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resource_limit->Release(LimitableResource::PhysicalMemory, size);
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resource_limit->Close();
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// Perform inherited finalization.
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KAutoObjectWithSlabHeapAndContainer<KSharedMemory, KAutoObjectWithList>::Finalize();
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2016-05-09 00:10:53 +02:00
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}
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2021-02-06 08:14:31 +01:00
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ResultCode KSharedMemory::Map(Process& target_process, VAddr address, std::size_t size,
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2021-02-13 02:02:51 +01:00
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KMemoryPermission permissions) {
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const u64 page_count{(size + PageSize - 1) / PageSize};
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2016-04-18 04:58:51 +02:00
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2020-04-09 00:53:52 +02:00
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if (page_list.GetNumPages() != page_count) {
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2020-04-17 06:59:08 +02:00
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UNIMPLEMENTED_MSG("Page count does not match");
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2016-04-18 04:58:51 +02:00
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}
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2015-12-31 15:46:32 +01:00
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2021-02-13 02:02:51 +01:00
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const KMemoryPermission expected =
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2020-04-09 00:53:52 +02:00
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&target_process == owner_process ? owner_permission : user_permission;
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2015-05-11 00:47:07 +02:00
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2020-04-24 00:42:11 +02:00
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if (permissions != expected) {
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2020-04-17 06:59:08 +02:00
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UNIMPLEMENTED_MSG("Permission does not match");
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2016-04-19 18:59:44 +02:00
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}
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2014-07-05 16:22:03 +02:00
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2021-02-13 02:02:51 +01:00
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return target_process.PageTable().MapPages(address, page_list, KMemoryState::Shared,
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2020-04-24 00:42:11 +02:00
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permissions);
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2018-11-19 15:00:32 +01:00
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}
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2017-10-01 20:57:50 +02:00
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} // namespace Kernel
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