diff options
Diffstat (limited to 'src/core/hle/kernel/vm_manager.h')
| -rw-r--r-- | src/core/hle/kernel/vm_manager.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/core/hle/kernel/vm_manager.h b/src/core/hle/kernel/vm_manager.h index 6f484b7bf..288eb9450 100644 --- a/src/core/hle/kernel/vm_manager.h +++ b/src/core/hle/kernel/vm_manager.h @@ -43,6 +43,9 @@ enum class VMAPermission : u8 { ReadExecute = Read | Execute, WriteExecute = Write | Execute, ReadWriteExecute = Read | Write | Execute, + + // Used as a wildcard when checking permissions across memory ranges + All = 0xFF, }; constexpr VMAPermission operator|(VMAPermission lhs, VMAPermission rhs) { @@ -152,6 +155,9 @@ enum class MemoryState : u32 { FlagUncached = 1U << 24, FlagCodeMemory = 1U << 25, + // Wildcard used in range checking to indicate all states. + All = 0xFFFFFFFF, + // Convenience flag sets to reduce repetition IPCFlags = FlagIPC0 | FlagIPC3 | FlagIPC1, @@ -415,6 +421,49 @@ public: /// ResultVal<VAddr> SetHeapSize(u64 size); + /// Maps a region of memory as code memory. + /// + /// @param dst_address The base address of the region to create the aliasing memory region. + /// @param src_address The base address of the region to be aliased. + /// @param size The total amount of memory to map in bytes. + /// + /// @pre Both memory regions lie within the actual addressable address space. + /// + /// @post After this function finishes execution, assuming success, then the address range + /// [dst_address, dst_address+size) will alias the memory region, + /// [src_address, src_address+size). + /// <p> + /// What this also entails is as follows: + /// 1. The aliased region gains the Locked memory attribute. + /// 2. The aliased region becomes read-only. + /// 3. The aliasing region becomes read-only. + /// 4. The aliasing region is created with a memory state of MemoryState::CodeModule. + /// + ResultCode MapCodeMemory(VAddr dst_address, VAddr src_address, u64 size); + + /// Unmaps a region of memory designated as code module memory. + /// + /// @param dst_address The base address of the memory region aliasing the source memory region. + /// @param src_address The base address of the memory region being aliased. + /// @param size The size of the memory region to unmap in bytes. + /// + /// @pre Both memory ranges lie within the actual addressable address space. + /// + /// @pre The memory region being unmapped has been previously been mapped + /// by a call to MapCodeMemory. + /// + /// @post After execution of the function, if successful. the aliasing memory region + /// will be unmapped and the aliased region will have various traits about it + /// restored to what they were prior to the original mapping call preceding + /// this function call. + /// <p> + /// What this also entails is as follows: + /// 1. The state of the memory region will now indicate a general heap region. + /// 2. All memory attributes for the memory region are cleared. + /// 3. Memory permissions for the region are restored to user read/write. + /// + ResultCode UnmapCodeMemory(VAddr dst_address, VAddr src_address, u64 size); + /// Queries the memory manager for information about the given address. /// /// @param address The address to query the memory manager about for information. |