mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-10 07:06:34 +00:00
460 lines
24 KiB
C++
460 lines
24 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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};
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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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#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>((perm & KMemoryPermission_UserMask) | KMemoryPermission_KernelRead | ((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_UserMask = 0x7F,
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KMemoryAttribute_All = 0xFF,
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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_AnyLocked = 0x80,
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KMemoryAttribute_SetMask = KMemoryAttribute_Uncached,
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};
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struct KMemoryInfo {
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uintptr_t address;
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size_t size;
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KMemoryState state;
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KMemoryPermission perm;
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KMemoryAttribute attribute;
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KMemoryPermission original_perm;
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u16 ipc_lock_count;
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u16 device_use_count;
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constexpr ams::svc::MemoryInfo GetSvcMemoryInfo() const {
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return {
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.addr = this->address,
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.size = this->size,
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.state = static_cast<ams::svc::MemoryState>(this->state & KMemoryState_Mask),
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.attr = static_cast<ams::svc::MemoryAttribute>(this->attribute & KMemoryAttribute_UserMask),
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.perm = static_cast<ams::svc::MemoryPermission>(this->perm & KMemoryPermission_UserMask),
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.ipc_refcount = this->ipc_lock_count,
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.device_refcount = this->device_use_count,
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};
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}
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constexpr uintptr_t GetAddress() const {
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return this->address;
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}
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constexpr size_t GetSize() const {
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return this->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 this->ipc_lock_count;
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}
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constexpr KMemoryState GetState() const {
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return this->state;
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}
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constexpr KMemoryPermission GetPermission() const {
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return this->perm;
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}
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constexpr KMemoryPermission GetOriginalPermission() const {
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return this->original_perm;
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}
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constexpr KMemoryAttribute GetAttribute() const {
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return this->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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KProcessAddress address;
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size_t num_pages;
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KMemoryState memory_state;
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u16 ipc_lock_count;
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u16 device_use_count;
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KMemoryPermission perm;
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KMemoryPermission original_perm;
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KMemoryAttribute 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 this->address;
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}
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constexpr size_t GetNumPages() const {
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return this->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 this->ipc_lock_count;
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}
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constexpr KMemoryPermission GetPermission() const {
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return this->perm;
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}
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constexpr KMemoryPermission GetOriginalPermission() const {
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return this->original_perm;
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}
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constexpr KMemoryAttribute GetAttribute() const {
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return this->attribute;
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}
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constexpr KMemoryInfo GetMemoryInfo() const {
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return {
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.address = GetInteger(this->GetAddress()),
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.size = this->GetSize(),
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.state = this->memory_state,
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.perm = this->perm,
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.attribute = this->attribute,
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.original_perm = this->original_perm,
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.ipc_lock_count = this->ipc_lock_count,
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.device_use_count = this->device_use_count,
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};
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}
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public:
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constexpr KMemoryBlock()
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: address(), num_pages(), memory_state(KMemoryState_None), ipc_lock_count(), device_use_count(), perm(), original_perm(), 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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: address(addr), num_pages(np), memory_state(ms), ipc_lock_count(0), device_use_count(0), perm(p), original_perm(KMemoryPermission_None), attribute(attr)
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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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this->address = addr;
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this->num_pages = np;
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this->memory_state = ms;
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this->ipc_lock_count = 0;
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this->device_use_count = 0;
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this->perm = p;
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this->original_perm = KMemoryPermission_None;
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this->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 this->memory_state == s && this->perm == p && (this->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 this->memory_state == rhs.memory_state &&
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this->perm == rhs.perm &&
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this->original_perm == rhs.original_perm &&
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this->attribute == rhs.attribute &&
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this->ipc_lock_count == rhs.ipc_lock_count &&
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this->device_use_count == rhs.device_use_count;
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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(size_t np) {
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MESOSPHERE_ASSERT_THIS();
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MESOSPHERE_ASSERT(np > 0);
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MESOSPHERE_ASSERT(this->GetAddress() + np * PageSize - 1 < this->GetEndAddress() + np * PageSize - 1);
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this->num_pages += np;
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}
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constexpr void Update(KMemoryState s, KMemoryPermission p, KMemoryAttribute a) {
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MESOSPHERE_ASSERT_THIS();
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MESOSPHERE_ASSERT(this->original_perm == KMemoryPermission_None);
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MESOSPHERE_ASSERT((this->attribute & KMemoryAttribute_IpcLocked) == 0);
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this->memory_state = s;
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this->perm = p;
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this->attribute = static_cast<KMemoryAttribute>(a | (this->attribute & (KMemoryAttribute_IpcLocked | KMemoryAttribute_DeviceShared)));
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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->address = this->address;
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block->num_pages = (addr - this->GetAddress()) / PageSize;
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block->memory_state = this->memory_state;
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block->ipc_lock_count = this->ipc_lock_count;
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block->device_use_count = this->device_use_count;
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block->perm = this->perm;
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block->original_perm = this->original_perm;
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block->attribute = this->attribute;
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this->address = addr;
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this->num_pages -= block->num_pages;
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}
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constexpr void ShareToDevice(KMemoryPermission new_perm) {
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/* We must either be shared or have a zero lock count. */
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MESOSPHERE_ASSERT((this->attribute & KMemoryAttribute_DeviceShared) == KMemoryAttribute_DeviceShared || this->device_use_count == 0);
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/* Share. */
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const u16 new_count = ++this->device_use_count;
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MESOSPHERE_ABORT_UNLESS(new_count > 0);
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this->attribute = static_cast<KMemoryAttribute>(this->attribute | KMemoryAttribute_DeviceShared);
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}
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constexpr void UnshareToDevice(KMemoryPermission new_perm) {
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/* We must be shared. */
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MESOSPHERE_ASSERT((this->attribute & KMemoryAttribute_DeviceShared) == KMemoryAttribute_DeviceShared);
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/* Unhare. */
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const u16 old_count = this->device_use_count--;
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MESOSPHERE_ABORT_UNLESS(old_count > 0);
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if (old_count == 1) {
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this->attribute = static_cast<KMemoryAttribute>(this->attribute & ~KMemoryAttribute_DeviceShared);
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}
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}
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constexpr void LockForIpc(KMemoryPermission new_perm) {
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/* We must either be locked or have a zero lock count. */
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MESOSPHERE_ASSERT((this->attribute & KMemoryAttribute_IpcLocked) == KMemoryAttribute_IpcLocked || this->ipc_lock_count == 0);
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/* Lock. */
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const u16 new_lock_count = ++this->ipc_lock_count;
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MESOSPHERE_ABORT_UNLESS(new_lock_count > 0);
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/* If this is our first lock, update our permissions. */
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if (new_lock_count == 1) {
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MESOSPHERE_ASSERT(this->original_perm == KMemoryPermission_None);
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MESOSPHERE_ASSERT((this->perm | new_perm | KMemoryPermission_NotMapped) == (this->perm | KMemoryPermission_NotMapped));
|
|
MESOSPHERE_ASSERT((this->perm & KMemoryPermission_UserExecute) != KMemoryPermission_UserExecute || (new_perm == KMemoryPermission_UserRead));
|
|
this->original_perm = this->perm;
|
|
this->perm = static_cast<KMemoryPermission>((new_perm & KMemoryPermission_IpcLockChangeMask) | (this->original_perm & ~KMemoryPermission_IpcLockChangeMask));
|
|
}
|
|
this->attribute = static_cast<KMemoryAttribute>(this->attribute | KMemoryAttribute_IpcLocked);
|
|
}
|
|
|
|
constexpr void UnlockForIpc(KMemoryPermission new_perm) {
|
|
/* We must be locked. */
|
|
MESOSPHERE_ASSERT((this->attribute & KMemoryAttribute_IpcLocked) == KMemoryAttribute_IpcLocked);
|
|
|
|
/* Unlock. */
|
|
const u16 old_lock_count = this->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(this->original_perm != KMemoryPermission_None);
|
|
this->perm = this->original_perm;
|
|
this->original_perm = KMemoryPermission_None;
|
|
this->attribute = static_cast<KMemoryAttribute>(this->attribute & ~KMemoryAttribute_IpcLocked);
|
|
}
|
|
}
|
|
};
|
|
static_assert(std::is_trivially_destructible<KMemoryBlock>::value);
|
|
|
|
}
|