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-rw-r--r--src/core/hle/kernel/shared_memory.cpp94
-rw-r--r--src/core/hle/kernel/shared_memory.h38
2 files changed, 132 insertions, 0 deletions
diff --git a/src/core/hle/kernel/shared_memory.cpp b/src/core/hle/kernel/shared_memory.cpp
new file mode 100644
index 000000000..3030d66fa
--- /dev/null
+++ b/src/core/hle/kernel/shared_memory.cpp
@@ -0,0 +1,94 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "common/common.h"
+
+#include "core/mem_map.h"
+#include "core/hle/kernel/shared_memory.h"
+
+namespace Kernel {
+
+class SharedMemory : public Object {
+public:
+ const char* GetTypeName() const { return "SharedMemory"; }
+
+ static Kernel::HandleType GetStaticHandleType() { return Kernel::HandleType::SharedMemory; }
+ Kernel::HandleType GetHandleType() const { return Kernel::HandleType::SharedMemory; }
+
+ /**
+ * Wait for kernel object to synchronize
+ * @param wait Boolean wait set if current thread should wait as a result of sync operation
+ * @return Result of operation, 0 on success, otherwise error code
+ */
+ Result WaitSynchronization(bool* wait) {
+ // TODO(bunnei): ImplementMe
+ ERROR_LOG(OSHLE, "(UNIMPLEMENTED)");
+ return 0;
+ }
+
+ u32 base_address; ///< Address of shared memory block in RAM
+ u32 permissions; ///< Permissions of shared memory block (specified by SVC field)
+ u32 other_permissions; ///< Other permissions of shared memory block (specified by SVC field)
+ std::string name; ///< Name of shared memory object (optional)
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Creates a shared memory object
+ * @param handle Handle of newly created shared memory object
+ * @param name Name of shared memory object
+ * @return Pointer to newly created shared memory object
+ */
+SharedMemory* CreateSharedMemory(Handle& handle, const std::string& name) {
+ SharedMemory* shared_memory = new SharedMemory;
+ handle = Kernel::g_object_pool.Create(shared_memory);
+ shared_memory->name = name;
+ return shared_memory;
+}
+
+/**
+ * Creates a shared memory object
+ * @param name Optional name of shared memory object
+ * @return Handle of newly created shared memory object
+ */
+Handle CreateSharedMemory(const std::string& name) {
+ Handle handle;
+ CreateSharedMemory(handle, name);
+ return handle;
+}
+
+/**
+ * Maps a shared memory block to an address in system memory
+ * @param handle Shared memory block handle
+ * @param address Address in system memory to map shared memory block to
+ * @param permissions Memory block map permissions (specified by SVC field)
+ * @param other_permissions Memory block map other permissions (specified by SVC field)
+ * @return Result of operation, 0 on success, otherwise error code
+ */
+Result MapSharedMemory(u32 handle, u32 address, u32 permissions, u32 other_permissions) {
+ SharedMemory* shared_memory = Kernel::g_object_pool.GetFast<SharedMemory>(handle);
+ shared_memory->base_address = address;
+ shared_memory->permissions = permissions;
+ shared_memory->other_permissions = other_permissions;
+ return 0;
+}
+
+/**
+ * Gets a pointer to the shared memory block
+ * @param handle Shared memory block handle
+ * @param offset Offset from the start of the shared memory block to get pointer
+ * @return Pointer to the shared memory block from the specified offset
+ */
+u8* GetSharedMemoryPointer(Handle handle, u32 offset) {
+ SharedMemory* shared_memory = Kernel::g_object_pool.GetFast<SharedMemory>(handle);
+ _assert_msg_(KERNEL, (shared_memory != nullptr), "handle 0x%08X is not valid!", handle);
+ if (0 != shared_memory->base_address)
+ return Memory::GetPointer(shared_memory->base_address + offset);
+
+ ERROR_LOG(KERNEL, "memory block handle=0x%08X not mapped!", handle);
+ return nullptr;
+}
+
+} // namespace
diff --git a/src/core/hle/kernel/shared_memory.h b/src/core/hle/kernel/shared_memory.h
new file mode 100644
index 000000000..4e235f605
--- /dev/null
+++ b/src/core/hle/kernel/shared_memory.h
@@ -0,0 +1,38 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+
+#include "core/hle/kernel/kernel.h"
+
+namespace Kernel {
+
+/**
+ * Creates a shared memory object
+ * @param name Optional name of shared memory object
+ * @return Handle of newly created shared memory object
+ */
+Handle CreateSharedMemory(const std::string& name="Unknown");
+
+/**
+ * Maps a shared memory block to an address in system memory
+ * @param handle Shared memory block handle
+ * @param address Address in system memory to map shared memory block to
+ * @param permissions Memory block map permissions (specified by SVC field)
+ * @param other_permissions Memory block map other permissions (specified by SVC field)
+ * @return Result of operation, 0 on success, otherwise error code
+ */
+Result MapSharedMemory(u32 handle, u32 address, u32 permissions, u32 other_permissions);
+
+/**
+ * Gets a pointer to the shared memory block
+ * @param handle Shared memory block handle
+ * @param offset Offset from the start of the shared memory block to get pointer
+ * @return Pointer to the shared memory block from the specified offset
+ */
+u8* GetSharedMemoryPointer(Handle handle, u32 offset);
+
+} // namespace