mirror of
https://github.com/Atmosphere-NX/Atmosphere
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635 lines
34 KiB
C++
635 lines
34 KiB
C++
/*
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* Copyright (c) 2018-2020 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_typed_address.hpp>
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#include <mesosphere/kern_slab_helpers.hpp>
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namespace ams::kern {
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enum KMemoryState : u32 {
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KMemoryState_None = 0,
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KMemoryState_Mask = 0xFF,
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KMemoryState_All = ~KMemoryState_None,
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KMemoryState_FlagCanReprotect = (1 << 8),
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KMemoryState_FlagCanDebug = (1 << 9),
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KMemoryState_FlagCanUseIpc = (1 << 10),
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KMemoryState_FlagCanUseNonDeviceIpc = (1 << 11),
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KMemoryState_FlagCanUseNonSecureIpc = (1 << 12),
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KMemoryState_FlagMapped = (1 << 13),
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KMemoryState_FlagCode = (1 << 14),
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KMemoryState_FlagCanAlias = (1 << 15),
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KMemoryState_FlagCanCodeAlias = (1 << 16),
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KMemoryState_FlagCanTransfer = (1 << 17),
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KMemoryState_FlagCanQueryPhysical = (1 << 18),
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KMemoryState_FlagCanDeviceMap = (1 << 19),
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KMemoryState_FlagCanAlignedDeviceMap = (1 << 20),
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KMemoryState_FlagCanIpcUserBuffer = (1 << 21),
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KMemoryState_FlagReferenceCounted = (1 << 22),
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KMemoryState_FlagCanMapProcess = (1 << 23),
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KMemoryState_FlagCanChangeAttribute = (1 << 24),
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KMemoryState_FlagCanCodeMemory = (1 << 25),
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KMemoryState_FlagsData = KMemoryState_FlagCanReprotect | KMemoryState_FlagCanUseIpc |
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KMemoryState_FlagCanUseNonDeviceIpc | KMemoryState_FlagCanUseNonSecureIpc |
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KMemoryState_FlagMapped | KMemoryState_FlagCanAlias |
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KMemoryState_FlagCanTransfer | KMemoryState_FlagCanQueryPhysical |
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KMemoryState_FlagCanDeviceMap | KMemoryState_FlagCanAlignedDeviceMap |
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KMemoryState_FlagCanIpcUserBuffer | KMemoryState_FlagReferenceCounted |
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KMemoryState_FlagCanChangeAttribute,
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KMemoryState_FlagsCode = KMemoryState_FlagCanDebug | KMemoryState_FlagCanUseIpc |
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KMemoryState_FlagCanUseNonDeviceIpc | KMemoryState_FlagCanUseNonSecureIpc |
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KMemoryState_FlagMapped | KMemoryState_FlagCode |
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KMemoryState_FlagCanQueryPhysical | KMemoryState_FlagCanDeviceMap |
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KMemoryState_FlagCanAlignedDeviceMap | KMemoryState_FlagReferenceCounted,
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KMemoryState_FlagsMisc = KMemoryState_FlagMapped | KMemoryState_FlagReferenceCounted |
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KMemoryState_FlagCanQueryPhysical | KMemoryState_FlagCanDeviceMap,
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KMemoryState_Free = ams::svc::MemoryState_Free,
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KMemoryState_Io = ams::svc::MemoryState_Io | KMemoryState_FlagMapped,
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KMemoryState_Static = ams::svc::MemoryState_Static | KMemoryState_FlagMapped | KMemoryState_FlagCanQueryPhysical,
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KMemoryState_Code = ams::svc::MemoryState_Code | KMemoryState_FlagsCode | KMemoryState_FlagCanMapProcess,
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KMemoryState_CodeData = ams::svc::MemoryState_CodeData | KMemoryState_FlagsData | KMemoryState_FlagCanMapProcess | KMemoryState_FlagCanCodeMemory,
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KMemoryState_Normal = ams::svc::MemoryState_Normal | KMemoryState_FlagsData | KMemoryState_FlagCanCodeMemory,
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KMemoryState_Shared = ams::svc::MemoryState_Shared | KMemoryState_FlagMapped | KMemoryState_FlagReferenceCounted,
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/* KMemoryState_Alias was removed after 1.0.0. */
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KMemoryState_AliasCode = ams::svc::MemoryState_AliasCode | KMemoryState_FlagsCode | KMemoryState_FlagCanMapProcess | KMemoryState_FlagCanCodeAlias,
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KMemoryState_AliasCodeData = ams::svc::MemoryState_AliasCodeData | KMemoryState_FlagsData | KMemoryState_FlagCanMapProcess | KMemoryState_FlagCanCodeAlias | KMemoryState_FlagCanCodeMemory,
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KMemoryState_Ipc = ams::svc::MemoryState_Ipc | KMemoryState_FlagsMisc | KMemoryState_FlagCanAlignedDeviceMap
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| KMemoryState_FlagCanUseIpc | KMemoryState_FlagCanUseNonSecureIpc | KMemoryState_FlagCanUseNonDeviceIpc,
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KMemoryState_Stack = ams::svc::MemoryState_Stack | KMemoryState_FlagsMisc | KMemoryState_FlagCanAlignedDeviceMap
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| KMemoryState_FlagCanUseIpc | KMemoryState_FlagCanUseNonSecureIpc | KMemoryState_FlagCanUseNonDeviceIpc,
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KMemoryState_ThreadLocal = ams::svc::MemoryState_ThreadLocal | KMemoryState_FlagMapped | KMemoryState_FlagReferenceCounted,
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KMemoryState_Transfered = ams::svc::MemoryState_Transfered | KMemoryState_FlagsMisc | KMemoryState_FlagCanAlignedDeviceMap | KMemoryState_FlagCanChangeAttribute
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| KMemoryState_FlagCanUseIpc | KMemoryState_FlagCanUseNonSecureIpc | KMemoryState_FlagCanUseNonDeviceIpc,
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KMemoryState_SharedTransfered = ams::svc::MemoryState_SharedTransfered | KMemoryState_FlagsMisc | KMemoryState_FlagCanAlignedDeviceMap
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| KMemoryState_FlagCanUseNonSecureIpc | KMemoryState_FlagCanUseNonDeviceIpc,
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KMemoryState_SharedCode = ams::svc::MemoryState_SharedCode | KMemoryState_FlagMapped | KMemoryState_FlagReferenceCounted
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| KMemoryState_FlagCanUseNonSecureIpc | KMemoryState_FlagCanUseNonDeviceIpc,
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KMemoryState_Inaccessible = ams::svc::MemoryState_Inaccessible,
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KMemoryState_NonSecureIpc = ams::svc::MemoryState_NonSecureIpc | KMemoryState_FlagsMisc | KMemoryState_FlagCanAlignedDeviceMap
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| KMemoryState_FlagCanUseNonSecureIpc | KMemoryState_FlagCanUseNonDeviceIpc,
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KMemoryState_NonDeviceIpc = ams::svc::MemoryState_NonDeviceIpc | KMemoryState_FlagsMisc | KMemoryState_FlagCanUseNonDeviceIpc,
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KMemoryState_Kernel = ams::svc::MemoryState_Kernel | KMemoryState_FlagMapped,
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KMemoryState_GeneratedCode = ams::svc::MemoryState_GeneratedCode | KMemoryState_FlagMapped | KMemoryState_FlagReferenceCounted | KMemoryState_FlagCanDebug,
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KMemoryState_CodeOut = ams::svc::MemoryState_CodeOut | KMemoryState_FlagMapped | KMemoryState_FlagReferenceCounted,
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KMemoryState_Coverage = ams::svc::MemoryState_Coverage | KMemoryState_FlagMapped,
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};
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#if 1
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static_assert(KMemoryState_Free == 0x00000000);
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static_assert(KMemoryState_Io == 0x00002001);
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static_assert(KMemoryState_Static == 0x00042002);
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static_assert(KMemoryState_Code == 0x00DC7E03);
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static_assert(KMemoryState_CodeData == 0x03FEBD04);
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static_assert(KMemoryState_Normal == 0x037EBD05);
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static_assert(KMemoryState_Shared == 0x00402006);
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static_assert(KMemoryState_AliasCode == 0x00DD7E08);
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static_assert(KMemoryState_AliasCodeData == 0x03FFBD09);
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static_assert(KMemoryState_Ipc == 0x005C3C0A);
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static_assert(KMemoryState_Stack == 0x005C3C0B);
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static_assert(KMemoryState_ThreadLocal == 0x0040200C);
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static_assert(KMemoryState_Transfered == 0x015C3C0D);
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static_assert(KMemoryState_SharedTransfered == 0x005C380E);
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static_assert(KMemoryState_SharedCode == 0x0040380F);
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static_assert(KMemoryState_Inaccessible == 0x00000010);
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static_assert(KMemoryState_NonSecureIpc == 0x005C3811);
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static_assert(KMemoryState_NonDeviceIpc == 0x004C2812);
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static_assert(KMemoryState_Kernel == 0x00002013);
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static_assert(KMemoryState_GeneratedCode == 0x00402214);
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static_assert(KMemoryState_CodeOut == 0x00402015);
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static_assert(KMemoryState_Coverage == 0x00002016);
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#endif
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enum KMemoryPermission : u8 {
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KMemoryPermission_None = 0,
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KMemoryPermission_All = static_cast<u8>(~KMemoryPermission_None),
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KMemoryPermission_KernelShift = 3,
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KMemoryPermission_KernelRead = ams::svc::MemoryPermission_Read << KMemoryPermission_KernelShift,
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KMemoryPermission_KernelWrite = ams::svc::MemoryPermission_Write << KMemoryPermission_KernelShift,
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KMemoryPermission_KernelExecute = ams::svc::MemoryPermission_Execute << KMemoryPermission_KernelShift,
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KMemoryPermission_NotMapped = (1 << (2 * KMemoryPermission_KernelShift)),
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KMemoryPermission_KernelReadWrite = KMemoryPermission_KernelRead | KMemoryPermission_KernelWrite,
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KMemoryPermission_KernelReadExecute = KMemoryPermission_KernelRead | KMemoryPermission_KernelExecute,
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KMemoryPermission_UserRead = ams::svc::MemoryPermission_Read | KMemoryPermission_KernelRead,
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KMemoryPermission_UserWrite = ams::svc::MemoryPermission_Write | KMemoryPermission_KernelWrite,
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KMemoryPermission_UserExecute = ams::svc::MemoryPermission_Execute,
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KMemoryPermission_UserReadWrite = KMemoryPermission_UserRead | KMemoryPermission_UserWrite,
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KMemoryPermission_UserReadExecute = KMemoryPermission_UserRead | KMemoryPermission_UserExecute,
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KMemoryPermission_UserMask = ams::svc::MemoryPermission_Read | ams::svc::MemoryPermission_Write | ams::svc::MemoryPermission_Execute,
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KMemoryPermission_IpcLockChangeMask = KMemoryPermission_NotMapped | KMemoryPermission_UserReadWrite,
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};
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constexpr KMemoryPermission ConvertToKMemoryPermission(ams::svc::MemoryPermission perm) {
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return static_cast<KMemoryPermission>((util::ToUnderlying(perm) & KMemoryPermission_UserMask) | KMemoryPermission_KernelRead | ((util::ToUnderlying(perm) & KMemoryPermission_UserWrite) << KMemoryPermission_KernelShift) | (perm == ams::svc::MemoryPermission_None ? KMemoryPermission_NotMapped : KMemoryPermission_None));
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}
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enum KMemoryAttribute : u8 {
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KMemoryAttribute_None = 0x00,
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KMemoryAttribute_All = 0xFF,
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KMemoryAttribute_UserMask = KMemoryAttribute_All,
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KMemoryAttribute_Locked = ams::svc::MemoryAttribute_Locked,
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KMemoryAttribute_IpcLocked = ams::svc::MemoryAttribute_IpcLocked,
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KMemoryAttribute_DeviceShared = ams::svc::MemoryAttribute_DeviceShared,
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KMemoryAttribute_Uncached = ams::svc::MemoryAttribute_Uncached,
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KMemoryAttribute_SetMask = KMemoryAttribute_Uncached,
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};
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enum KMemoryBlockDisableMergeAttribute : u8 {
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KMemoryBlockDisableMergeAttribute_None = 0,
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KMemoryBlockDisableMergeAttribute_Normal = (1u << 0),
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KMemoryBlockDisableMergeAttribute_DeviceLeft = (1u << 1),
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KMemoryBlockDisableMergeAttribute_IpcLeft = (1u << 2),
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KMemoryBlockDisableMergeAttribute_Locked = (1u << 3),
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KMemoryBlockDisableMergeAttribute_DeviceRight = (1u << 4),
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KMemoryBlockDisableMergeAttribute_AllLeft = KMemoryBlockDisableMergeAttribute_Normal | KMemoryBlockDisableMergeAttribute_DeviceLeft | KMemoryBlockDisableMergeAttribute_IpcLeft | KMemoryBlockDisableMergeAttribute_Locked,
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KMemoryBlockDisableMergeAttribute_AllRight = KMemoryBlockDisableMergeAttribute_DeviceRight,
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};
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struct KMemoryInfo {
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uintptr_t m_address;
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size_t m_size;
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KMemoryState m_state;
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u16 m_device_disable_merge_left_count;
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u16 m_device_disable_merge_right_count;
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u16 m_ipc_lock_count;
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u16 m_device_use_count;
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u16 m_ipc_disable_merge_count;
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KMemoryPermission m_perm;
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KMemoryAttribute m_attribute;
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KMemoryPermission m_original_perm;
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KMemoryBlockDisableMergeAttribute m_disable_merge_attribute;
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constexpr ams::svc::MemoryInfo GetSvcMemoryInfo() const {
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return {
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.addr = m_address,
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.size = m_size,
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.state = static_cast<ams::svc::MemoryState>(m_state & KMemoryState_Mask),
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.attr = static_cast<ams::svc::MemoryAttribute>(m_attribute & KMemoryAttribute_UserMask),
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.perm = static_cast<ams::svc::MemoryPermission>(m_perm & KMemoryPermission_UserMask),
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.ipc_refcount = m_ipc_lock_count,
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.device_refcount = m_device_use_count,
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.padding = {},
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};
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}
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constexpr uintptr_t GetAddress() const {
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return m_address;
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}
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constexpr size_t GetSize() const {
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return m_size;
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}
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constexpr size_t GetNumPages() const {
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return this->GetSize() / PageSize;
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}
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constexpr uintptr_t GetEndAddress() const {
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return this->GetAddress() + this->GetSize();
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}
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constexpr uintptr_t GetLastAddress() const {
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return this->GetEndAddress() - 1;
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}
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constexpr u16 GetIpcLockCount() const {
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return m_ipc_lock_count;
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}
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constexpr u16 GetIpcDisableMergeCount() const {
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return m_ipc_disable_merge_count;
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}
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constexpr KMemoryState GetState() const {
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return m_state;
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}
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constexpr KMemoryPermission GetPermission() const {
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return m_perm;
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}
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constexpr KMemoryPermission GetOriginalPermission() const {
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return m_original_perm;
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}
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constexpr KMemoryAttribute GetAttribute() const {
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return m_attribute;
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}
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constexpr KMemoryBlockDisableMergeAttribute GetDisableMergeAttribute() const {
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return m_disable_merge_attribute;
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}
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};
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class KMemoryBlock : public util::IntrusiveRedBlackTreeBaseNode<KMemoryBlock> {
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private:
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u16 m_device_disable_merge_left_count;
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u16 m_device_disable_merge_right_count;
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KProcessAddress m_address;
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size_t m_num_pages;
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KMemoryState m_memory_state;
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u16 m_ipc_lock_count;
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u16 m_device_use_count;
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u16 m_ipc_disable_merge_count;
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KMemoryPermission m_perm;
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KMemoryPermission m_original_perm;
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KMemoryAttribute m_attribute;
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KMemoryBlockDisableMergeAttribute m_disable_merge_attribute;
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public:
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static constexpr ALWAYS_INLINE int Compare(const KMemoryBlock &lhs, const KMemoryBlock &rhs) {
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if (lhs.GetAddress() < rhs.GetAddress()) {
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return -1;
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} else if (lhs.GetAddress() <= rhs.GetLastAddress()) {
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return 0;
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} else {
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return 1;
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}
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}
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public:
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constexpr KProcessAddress GetAddress() const {
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return m_address;
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}
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constexpr size_t GetNumPages() const {
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return m_num_pages;
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}
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constexpr size_t GetSize() const {
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return this->GetNumPages() * PageSize;
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}
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constexpr KProcessAddress GetEndAddress() const {
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return this->GetAddress() + this->GetSize();
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}
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constexpr KProcessAddress GetLastAddress() const {
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return this->GetEndAddress() - 1;
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}
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constexpr u16 GetIpcLockCount() const {
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return m_ipc_lock_count;
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}
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constexpr u16 GetIpcDisableMergeCount() const {
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return m_ipc_disable_merge_count;
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}
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constexpr KMemoryPermission GetPermission() const {
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return m_perm;
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}
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constexpr KMemoryPermission GetOriginalPermission() const {
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return m_original_perm;
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}
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constexpr KMemoryAttribute GetAttribute() const {
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return m_attribute;
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}
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constexpr KMemoryInfo GetMemoryInfo() const {
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return {
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.m_address = GetInteger(this->GetAddress()),
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.m_size = this->GetSize(),
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.m_state = m_memory_state,
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.m_device_disable_merge_left_count = m_device_disable_merge_left_count,
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.m_device_disable_merge_right_count = m_device_disable_merge_right_count,
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.m_ipc_lock_count = m_ipc_lock_count,
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.m_device_use_count = m_device_use_count,
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.m_ipc_disable_merge_count = m_ipc_disable_merge_count,
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.m_perm = m_perm,
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.m_attribute = m_attribute,
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.m_original_perm = m_original_perm,
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.m_disable_merge_attribute = m_disable_merge_attribute,
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};
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}
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public:
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constexpr KMemoryBlock()
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: m_device_disable_merge_left_count(), m_device_disable_merge_right_count(), m_address(), m_num_pages(), m_memory_state(KMemoryState_None), m_ipc_lock_count(), m_device_use_count(), m_ipc_disable_merge_count(), m_perm(), m_original_perm(), m_attribute(), m_disable_merge_attribute()
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{
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/* ... */
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}
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constexpr KMemoryBlock(KProcessAddress addr, size_t np, KMemoryState ms, KMemoryPermission p, KMemoryAttribute attr)
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: m_device_disable_merge_left_count(), m_device_disable_merge_right_count(), m_address(addr), m_num_pages(np), m_memory_state(ms), m_ipc_lock_count(0), m_device_use_count(0), m_ipc_disable_merge_count(), m_perm(p), m_original_perm(KMemoryPermission_None), m_attribute(attr), m_disable_merge_attribute()
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{
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/* ... */
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}
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constexpr void Initialize(KProcessAddress addr, size_t np, KMemoryState ms, KMemoryPermission p, KMemoryAttribute attr) {
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MESOSPHERE_ASSERT_THIS();
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m_address = addr;
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m_num_pages = np;
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m_memory_state = ms;
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m_ipc_lock_count = 0;
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m_device_use_count = 0;
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m_perm = p;
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m_original_perm = KMemoryPermission_None;
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m_attribute = attr;
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}
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constexpr bool HasProperties(KMemoryState s, KMemoryPermission p, KMemoryAttribute a) const {
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MESOSPHERE_ASSERT_THIS();
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constexpr auto AttributeIgnoreMask = KMemoryAttribute_IpcLocked | KMemoryAttribute_DeviceShared;
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return m_memory_state == s && m_perm == p && (m_attribute | AttributeIgnoreMask) == (a | AttributeIgnoreMask);
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}
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constexpr bool HasSameProperties(const KMemoryBlock &rhs) const {
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MESOSPHERE_ASSERT_THIS();
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return m_memory_state == rhs.m_memory_state &&
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m_perm == rhs.m_perm &&
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m_original_perm == rhs.m_original_perm &&
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m_attribute == rhs.m_attribute &&
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m_ipc_lock_count == rhs.m_ipc_lock_count &&
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m_device_use_count == rhs.m_device_use_count;
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}
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constexpr bool CanMergeWith(const KMemoryBlock &rhs) const {
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return this->HasSameProperties(rhs) &&
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(m_disable_merge_attribute & KMemoryBlockDisableMergeAttribute_AllRight) == 0 &&
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(rhs.m_disable_merge_attribute & KMemoryBlockDisableMergeAttribute_AllLeft) == 0;
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}
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constexpr bool Contains(KProcessAddress addr) const {
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MESOSPHERE_ASSERT_THIS();
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return this->GetAddress() <= addr && addr <= this->GetEndAddress();
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}
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constexpr void Add(const KMemoryBlock &added_block) {
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MESOSPHERE_ASSERT_THIS();
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MESOSPHERE_ASSERT(added_block.GetNumPages() > 0);
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MESOSPHERE_ASSERT(this->GetAddress() + added_block.GetSize() - 1 < this->GetEndAddress() + added_block.GetSize() - 1);
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m_num_pages += added_block.GetNumPages();
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m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute | added_block.m_disable_merge_attribute);
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m_device_disable_merge_right_count = added_block.m_device_disable_merge_right_count;
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}
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constexpr void Update(KMemoryState s, KMemoryPermission p, KMemoryAttribute a, bool set_disable_merge_attr, u8 set_mask, u8 clear_mask) {
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MESOSPHERE_ASSERT_THIS();
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MESOSPHERE_ASSERT(m_original_perm == KMemoryPermission_None);
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MESOSPHERE_ASSERT((m_attribute & KMemoryAttribute_IpcLocked) == 0);
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m_memory_state = s;
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m_perm = p;
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m_attribute = static_cast<KMemoryAttribute>(a | (m_attribute & (KMemoryAttribute_IpcLocked | KMemoryAttribute_DeviceShared)));
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if (set_disable_merge_attr && set_mask != 0) {
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m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute | set_mask);
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}
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if (clear_mask != 0) {
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m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute & ~clear_mask);
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}
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}
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constexpr void Split(KMemoryBlock *block, KProcessAddress addr) {
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MESOSPHERE_ASSERT_THIS();
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MESOSPHERE_ASSERT(this->GetAddress() < addr);
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MESOSPHERE_ASSERT(this->Contains(addr));
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MESOSPHERE_ASSERT(util::IsAligned(GetInteger(addr), PageSize));
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block->m_address = m_address;
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block->m_num_pages = (addr - this->GetAddress()) / PageSize;
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block->m_memory_state = m_memory_state;
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block->m_ipc_lock_count = m_ipc_lock_count;
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block->m_device_use_count = m_device_use_count;
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block->m_perm = m_perm;
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block->m_original_perm = m_original_perm;
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block->m_attribute = m_attribute;
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block->m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute & KMemoryBlockDisableMergeAttribute_AllLeft);
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block->m_ipc_disable_merge_count = m_ipc_disable_merge_count;
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block->m_device_disable_merge_left_count = m_device_disable_merge_left_count;
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block->m_device_disable_merge_right_count = 0;
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m_address = addr;
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m_num_pages -= block->m_num_pages;
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m_ipc_disable_merge_count = 0;
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m_device_disable_merge_left_count = 0;
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m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute & KMemoryBlockDisableMergeAttribute_AllRight);
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}
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constexpr void UpdateDeviceDisableMergeStateForShareLeft(KMemoryPermission new_perm, bool left, bool right) {
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/* New permission/right aren't used. */
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MESOSPHERE_UNUSED(new_perm, right);
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if (left) {
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m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute | KMemoryBlockDisableMergeAttribute_DeviceLeft);
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const u16 new_device_disable_merge_left_count = ++m_device_disable_merge_left_count;
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MESOSPHERE_ABORT_UNLESS(new_device_disable_merge_left_count > 0);
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}
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}
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constexpr void UpdateDeviceDisableMergeStateForShareRight(KMemoryPermission new_perm, bool left, bool right) {
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/* New permission/left aren't used. */
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MESOSPHERE_UNUSED(new_perm, left);
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if (right) {
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m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute | KMemoryBlockDisableMergeAttribute_DeviceRight);
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const u16 new_device_disable_merge_right_count = ++m_device_disable_merge_right_count;
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MESOSPHERE_ABORT_UNLESS(new_device_disable_merge_right_count > 0);
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}
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}
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constexpr void UpdateDeviceDisableMergeStateForShare(KMemoryPermission new_perm, bool left, bool right) {
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this->UpdateDeviceDisableMergeStateForShareLeft(new_perm, left, right);
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this->UpdateDeviceDisableMergeStateForShareRight(new_perm, left, right);
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}
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constexpr void ShareToDevice(KMemoryPermission new_perm, bool left, bool right) {
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/* New permission isn't used. */
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MESOSPHERE_UNUSED(new_perm);
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|
|
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/* We must either be shared or have a zero lock count. */
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MESOSPHERE_ASSERT((m_attribute & KMemoryAttribute_DeviceShared) == KMemoryAttribute_DeviceShared || m_device_use_count == 0);
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|
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/* Share. */
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const u16 new_count = ++m_device_use_count;
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MESOSPHERE_ABORT_UNLESS(new_count > 0);
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|
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m_attribute = static_cast<KMemoryAttribute>(m_attribute | KMemoryAttribute_DeviceShared);
|
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this->UpdateDeviceDisableMergeStateForShare(new_perm, left, right);
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}
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|
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constexpr void UpdateDeviceDisableMergeStateForUnshareLeft(KMemoryPermission new_perm, bool left, bool right) {
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|
/* New permission/right aren't used. */
|
|
MESOSPHERE_UNUSED(new_perm, right);
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|
|
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if (left) {
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|
if (!m_device_disable_merge_left_count) {
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|
return;
|
|
}
|
|
--m_device_disable_merge_left_count;
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|
}
|
|
|
|
m_device_disable_merge_left_count = std::min(m_device_disable_merge_left_count, m_device_use_count);
|
|
|
|
if (m_device_disable_merge_left_count == 0) {
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|
m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute & ~KMemoryBlockDisableMergeAttribute_DeviceLeft);
|
|
}
|
|
}
|
|
|
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constexpr void UpdateDeviceDisableMergeStateForUnshareRight(KMemoryPermission new_perm, bool left, bool right) {
|
|
/* New permission/left aren't used. */
|
|
MESOSPHERE_UNUSED(new_perm, left);
|
|
|
|
if (right) {
|
|
const u16 old_device_disable_merge_right_count = m_device_disable_merge_right_count--;
|
|
MESOSPHERE_ASSERT(old_device_disable_merge_right_count > 0);
|
|
if (old_device_disable_merge_right_count == 1) {
|
|
m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute & ~KMemoryBlockDisableMergeAttribute_DeviceRight);
|
|
}
|
|
}
|
|
}
|
|
|
|
constexpr void UpdateDeviceDisableMergeStateForUnshare(KMemoryPermission new_perm, bool left, bool right) {
|
|
this->UpdateDeviceDisableMergeStateForUnshareLeft(new_perm, left, right);
|
|
this->UpdateDeviceDisableMergeStateForUnshareRight(new_perm, left, right);
|
|
}
|
|
|
|
constexpr void UnshareToDevice(KMemoryPermission new_perm, bool left, bool right) {
|
|
/* New permission isn't used. */
|
|
MESOSPHERE_UNUSED(new_perm);
|
|
|
|
/* We must be shared. */
|
|
MESOSPHERE_ASSERT((m_attribute & KMemoryAttribute_DeviceShared) == KMemoryAttribute_DeviceShared);
|
|
|
|
/* Unhare. */
|
|
const u16 old_count = m_device_use_count--;
|
|
MESOSPHERE_ABORT_UNLESS(old_count > 0);
|
|
|
|
if (old_count == 1) {
|
|
m_attribute = static_cast<KMemoryAttribute>(m_attribute & ~KMemoryAttribute_DeviceShared);
|
|
}
|
|
|
|
this->UpdateDeviceDisableMergeStateForUnshare(new_perm, left, right);
|
|
}
|
|
|
|
constexpr void UnshareToDeviceRight(KMemoryPermission new_perm, bool left, bool right) {
|
|
/* New permission isn't used. */
|
|
MESOSPHERE_UNUSED(new_perm);
|
|
|
|
/* We must be shared. */
|
|
MESOSPHERE_ASSERT((m_attribute & KMemoryAttribute_DeviceShared) == KMemoryAttribute_DeviceShared);
|
|
|
|
/* Unhare. */
|
|
const u16 old_count = m_device_use_count--;
|
|
MESOSPHERE_ABORT_UNLESS(old_count > 0);
|
|
|
|
if (old_count == 1) {
|
|
m_attribute = static_cast<KMemoryAttribute>(m_attribute & ~KMemoryAttribute_DeviceShared);
|
|
}
|
|
|
|
this->UpdateDeviceDisableMergeStateForUnshareRight(new_perm, left, right);
|
|
}
|
|
|
|
constexpr void LockForIpc(KMemoryPermission new_perm, bool left, bool right) {
|
|
/* We must either be locked or have a zero lock count. */
|
|
MESOSPHERE_ASSERT((m_attribute & KMemoryAttribute_IpcLocked) == KMemoryAttribute_IpcLocked || m_ipc_lock_count == 0);
|
|
|
|
/* Lock. */
|
|
const u16 new_lock_count = ++m_ipc_lock_count;
|
|
MESOSPHERE_ABORT_UNLESS(new_lock_count > 0);
|
|
|
|
/* If this is our first lock, update our permissions. */
|
|
if (new_lock_count == 1) {
|
|
MESOSPHERE_ASSERT(m_original_perm == KMemoryPermission_None);
|
|
MESOSPHERE_ASSERT((m_perm | new_perm | KMemoryPermission_NotMapped) == (m_perm | KMemoryPermission_NotMapped));
|
|
MESOSPHERE_ASSERT((m_perm & KMemoryPermission_UserExecute) != KMemoryPermission_UserExecute || (new_perm == KMemoryPermission_UserRead));
|
|
m_original_perm = m_perm;
|
|
m_perm = static_cast<KMemoryPermission>((new_perm & KMemoryPermission_IpcLockChangeMask) | (m_original_perm & ~KMemoryPermission_IpcLockChangeMask));
|
|
}
|
|
m_attribute = static_cast<KMemoryAttribute>(m_attribute | KMemoryAttribute_IpcLocked);
|
|
|
|
if (left) {
|
|
m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute | KMemoryBlockDisableMergeAttribute_IpcLeft);
|
|
const u16 new_ipc_disable_merge_count = ++m_ipc_disable_merge_count;
|
|
MESOSPHERE_ABORT_UNLESS(new_ipc_disable_merge_count > 0);
|
|
}
|
|
MESOSPHERE_UNUSED(right);
|
|
}
|
|
|
|
constexpr void UnlockForIpc(KMemoryPermission new_perm, bool left, bool right) {
|
|
/* New permission isn't used. */
|
|
MESOSPHERE_UNUSED(new_perm);
|
|
|
|
/* We must be locked. */
|
|
MESOSPHERE_ASSERT((m_attribute & KMemoryAttribute_IpcLocked) == KMemoryAttribute_IpcLocked);
|
|
|
|
/* Unlock. */
|
|
const u16 old_lock_count = m_ipc_lock_count--;
|
|
MESOSPHERE_ABORT_UNLESS(old_lock_count > 0);
|
|
|
|
/* If this is our last unlock, update our permissions. */
|
|
if (old_lock_count == 1) {
|
|
MESOSPHERE_ASSERT(m_original_perm != KMemoryPermission_None);
|
|
m_perm = m_original_perm;
|
|
m_original_perm = KMemoryPermission_None;
|
|
m_attribute = static_cast<KMemoryAttribute>(m_attribute & ~KMemoryAttribute_IpcLocked);
|
|
}
|
|
|
|
if (left) {
|
|
const u16 old_ipc_disable_merge_count = m_ipc_disable_merge_count--;
|
|
MESOSPHERE_ASSERT(old_ipc_disable_merge_count > 0);
|
|
if (old_ipc_disable_merge_count == 1) {
|
|
m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(m_disable_merge_attribute & ~KMemoryBlockDisableMergeAttribute_IpcLeft);
|
|
}
|
|
}
|
|
MESOSPHERE_UNUSED(right);
|
|
}
|
|
|
|
constexpr KMemoryBlockDisableMergeAttribute GetDisableMergeAttribute() const {
|
|
return m_disable_merge_attribute;
|
|
}
|
|
};
|
|
static_assert(std::is_trivially_destructible<KMemoryBlock>::value);
|
|
|
|
}
|