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author | bunnei <bunneidev@gmail.com> | 2020-04-09 00:53:52 +0200 |
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committer | bunnei <bunneidev@gmail.com> | 2020-04-17 06:59:32 +0200 |
commit | d0162fc3d7841190bf163afc754b0ec0cdbd7462 (patch) | |
tree | 28617dc6c379ed3814d08e771dfbc0b172f35b8c /src/core/hle/kernel/shared_memory.h | |
parent | core: device_memory: Update to use VirtualBuffer class. (diff) | |
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Diffstat (limited to 'src/core/hle/kernel/shared_memory.h')
-rw-r--r-- | src/core/hle/kernel/shared_memory.h | 127 |
1 files changed, 29 insertions, 98 deletions
diff --git a/src/core/hle/kernel/shared_memory.h b/src/core/hle/kernel/shared_memory.h index 014951d82..06fe693de 100644 --- a/src/core/hle/kernel/shared_memory.h +++ b/src/core/hle/kernel/shared_memory.h @@ -8,8 +8,10 @@ #include <string> #include "common/common_types.h" +#include "core/device_memory.h" +#include "core/hle/kernel/memory/memory_block.h" +#include "core/hle/kernel/memory/page_linked_list.h" #include "core/hle/kernel/object.h" -#include "core/hle/kernel/physical_memory.h" #include "core/hle/kernel/process.h" #include "core/hle/result.h" @@ -17,63 +19,21 @@ namespace Kernel { class KernelCore; -/// Permissions for mapped shared memory blocks -enum class MemoryPermission : u32 { - None = 0, - Read = (1u << 0), - Write = (1u << 1), - ReadWrite = (Read | Write), - Execute = (1u << 2), - ReadExecute = (Read | Execute), - WriteExecute = (Write | Execute), - ReadWriteExecute = (Read | Write | Execute), - DontCare = (1u << 28) -}; - class SharedMemory final : public Object { public: - explicit SharedMemory(KernelCore& kernel); + explicit SharedMemory(KernelCore& kernel, Core::DeviceMemory& device_memory); ~SharedMemory() override; - /** - * Creates a shared memory object. - * @param kernel The kernel instance to create a shared memory instance under. - * @param owner_process Process that created this shared memory object. - * @param size Size of the memory block. Must be page-aligned. - * @param permissions Permission restrictions applied to the process which created the block. - * @param other_permissions Permission restrictions applied to other processes mapping the - * block. - * @param address The address from which to map the Shared Memory. - * @param region If the address is 0, the shared memory will be allocated in this region of the - * linear heap. - * @param name Optional object name, used for debugging purposes. - */ - static std::shared_ptr<SharedMemory> Create(KernelCore& kernel, Process* owner_process, - u64 size, MemoryPermission permissions, - MemoryPermission other_permissions, - VAddr address = 0, - MemoryRegion region = MemoryRegion::BASE, - std::string name = "Unknown"); - - /** - * Creates a shared memory object from a block of memory managed by an HLE applet. - * @param kernel The kernel instance to create a shared memory instance under. - * @param heap_block Heap block of the HLE applet. - * @param offset The offset into the heap block that the SharedMemory will map. - * @param size Size of the memory block. Must be page-aligned. - * @param permissions Permission restrictions applied to the process which created the block. - * @param other_permissions Permission restrictions applied to other processes mapping the - * block. - * @param name Optional object name, used for debugging purposes. - */ - static std::shared_ptr<SharedMemory> CreateForApplet( - KernelCore& kernel, std::shared_ptr<Kernel::PhysicalMemory> heap_block, std::size_t offset, - u64 size, MemoryPermission permissions, MemoryPermission other_permissions, - std::string name = "Unknown Applet"); + static std::shared_ptr<SharedMemory> Create( + KernelCore& kernel, Core::DeviceMemory& device_memory, Process* owner_process, + Memory::PageLinkedList&& page_list, Memory::MemoryPermission owner_permission, + Memory::MemoryPermission user_permission, PAddr physical_address, std::size_t size, + std::string name = "Unknown"); std::string GetTypeName() const override { return "SharedMemory"; } + std::string GetName() const override { return name; } @@ -83,71 +43,42 @@ public: return HANDLE_TYPE; } - /// Gets the size of the underlying memory block in bytes. - u64 GetSize() const { - return size; - } - - /** - * Converts the specified MemoryPermission into the equivalent VMAPermission. - * @param permission The MemoryPermission to convert. - */ - static VMAPermission ConvertPermissions(MemoryPermission permission); - /** * Maps a shared memory block to an address in the target process' address space - * @param target_process Process on which to map the memory block. + * @param target_process Process on which to map the memory block * @param address Address in system memory to map shared memory block to + * @param size Size of the shared memory block to map * @param permissions Memory block map permissions (specified by SVC field) - * @param other_permissions Memory block map other permissions (specified by SVC field) - */ - ResultCode Map(Process& target_process, VAddr address, MemoryPermission permissions, - MemoryPermission other_permissions); - - /** - * Unmaps a shared memory block from the specified address in system memory - * - * @param target_process Process from which to unmap the memory block. - * @param address Address in system memory where the shared memory block is mapped. - * @param unmap_size The amount of bytes to unmap from this shared memory instance. - * - * @return Result code of the unmap operation - * - * @pre The given size to unmap must be the same size as the amount of memory managed by - * the SharedMemory instance itself, otherwise ERR_INVALID_SIZE will be returned. */ - ResultCode Unmap(Process& target_process, VAddr address, u64 unmap_size); + ResultCode Map(Process& target_process, VAddr address, std::size_t size, + Memory::MemoryPermission permission); /** * Gets a pointer to the shared memory block * @param offset Offset from the start of the shared memory block to get pointer * @return A pointer to the shared memory block from the specified offset */ - u8* GetPointer(std::size_t offset = 0); + u8* GetPointer(std::size_t offset = 0) { + return device_memory.GetPointer(physical_address + offset); + } /** - * Gets a constant pointer to the shared memory block + * Gets a pointer to the shared memory block * @param offset Offset from the start of the shared memory block to get pointer - * @return A constant pointer to the shared memory block from the specified offset + * @return A pointer to the shared memory block from the specified offset */ - const u8* GetPointer(std::size_t offset = 0) const; + const u8* GetPointer(std::size_t offset = 0) const { + return device_memory.GetPointer(physical_address + offset); + } private: - /// Backing memory for this shared memory block. - std::shared_ptr<PhysicalMemory> backing_block; - /// Offset into the backing block for this shared memory. - std::size_t backing_block_offset = 0; - /// Size of the memory block. Page-aligned. - u64 size = 0; - /// Permission restrictions applied to the process which created the block. - MemoryPermission permissions{}; - /// Permission restrictions applied to other processes mapping the block. - MemoryPermission other_permissions{}; - /// Process that created this shared memory block. - Process* owner_process; - /// Address of shared memory block in the owner process if specified. - VAddr base_address = 0; - /// Name of shared memory object. + Core::DeviceMemory& device_memory; + Process* owner_process{}; + Memory::PageLinkedList page_list; + Memory::MemoryPermission owner_permission{}; + Memory::MemoryPermission user_permission{}; + PAddr physical_address{}; + std::size_t size{}; std::string name; }; |