SharedMemory: Updated MapSharedMemory to use an enum for permissions.

- Also added some safety checks to MapSharedMemory.

1 files changed, 11 insertions, 1 deletions

diff --git a/src/core/hle/kernel/shared_memory.h b/src/core/hle/kernel/shared_memory.h
index 4e235f60..5312b885 100644
--- a/src/core/hle/kernel/shared_memory.h
+++ b/src/core/hle/kernel/shared_memory.h
@@ -10,6 +10,15 @@
 
 namespace Kernel {
 
+/// Permissions for mapped shared memory blocks
+enum class MemoryPermission : u32 {
+    None        = 0,
+    Read        = (1u <<  0),
+    Write       = (1u <<  1),
+    ReadWrite   = (Read | Write),
+    DontCare    = (1u << 28)
+};
+
 /**
  * Creates a shared memory object
  * @param name Optional name of shared memory object
@@ -25,7 +34,8 @@ Handle CreateSharedMemory(const std::string& name="Unknown");
  * @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);
+Result MapSharedMemory(u32 handle, u32 address, MemoryPermission permissions, 
+    MemoryPermission other_permissions);
 
 /**
  * Gets a pointer to the shared memory block