SharedMemory: Updated MapSharedMemory to use an enum for permissions.
- Also added some safety checks to MapSharedMemory.
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882dc07929
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7ff92c36ed
src/core/hle
@ -27,10 +27,10 @@ public:
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return 0;
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}
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u32 base_address; ///< Address of shared memory block in RAM
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u32 permissions; ///< Permissions of shared memory block (specified by SVC field)
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u32 other_permissions; ///< Other permissions of shared memory block (specified by SVC field)
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std::string name; ///< Name of shared memory object (optional)
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u32 base_address; ///< Address of shared memory block in RAM
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MemoryPermission permissions; ///< Permissions of shared memory block (SVC field)
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MemoryPermission other_permissions; ///< Other permissions of shared memory block (SVC field)
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std::string name; ///< Name of shared memory object (optional)
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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@ -67,11 +67,21 @@ Handle CreateSharedMemory(const std::string& name) {
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* @param other_permissions Memory block map other permissions (specified by SVC field)
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* @return Result of operation, 0 on success, otherwise error code
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*/
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Result MapSharedMemory(u32 handle, u32 address, u32 permissions, u32 other_permissions) {
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Result MapSharedMemory(u32 handle, u32 address, MemoryPermission permissions,
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MemoryPermission other_permissions) {
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if (address < Memory::SHARED_MEMORY_VADDR || address >= Memory::SHARED_MEMORY_VADDR_END) {
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ERROR_LOG(KERNEL, "cannot map handle=0x%08X, address=0x%08X outside of shared mem bounds!",
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handle);
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return -1;
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}
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SharedMemory* shared_memory = Kernel::g_object_pool.GetFast<SharedMemory>(handle);
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_assert_msg_(KERNEL, (shared_memory != nullptr), "handle 0x%08X is not valid!", handle);
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shared_memory->base_address = address;
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shared_memory->permissions = permissions;
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shared_memory->other_permissions = other_permissions;
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return 0;
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}
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@ -84,6 +94,7 @@ Result MapSharedMemory(u32 handle, u32 address, u32 permissions, u32 other_permi
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u8* GetSharedMemoryPointer(Handle handle, u32 offset) {
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SharedMemory* shared_memory = Kernel::g_object_pool.GetFast<SharedMemory>(handle);
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_assert_msg_(KERNEL, (shared_memory != nullptr), "handle 0x%08X is not valid!", handle);
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if (0 != shared_memory->base_address)
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return Memory::GetPointer(shared_memory->base_address + offset);
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@ -10,6 +10,15 @@
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namespace Kernel {
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/// Permissions for mapped shared memory blocks
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enum class MemoryPermission : u32 {
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None = 0,
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Read = (1u << 0),
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Write = (1u << 1),
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ReadWrite = (Read | Write),
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DontCare = (1u << 28)
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};
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/**
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* Creates a shared memory object
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* @param name Optional name of shared memory object
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@ -25,7 +34,8 @@ Handle CreateSharedMemory(const std::string& name="Unknown");
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* @param other_permissions Memory block map other permissions (specified by SVC field)
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* @return Result of operation, 0 on success, otherwise error code
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*/
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Result MapSharedMemory(u32 handle, u32 address, u32 permissions, u32 other_permissions);
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Result MapSharedMemory(u32 handle, u32 address, MemoryPermission permissions,
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MemoryPermission other_permissions);
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/**
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* Gets a pointer to the shared memory block
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@ -29,11 +29,6 @@ enum ControlMemoryOperation {
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MEMORY_OPERATION_GSP_HEAP = 0x00010003,
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};
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enum MapMemoryPermission {
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MEMORY_PERMISSION_UNMAP = 0x00000000,
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MEMORY_PERMISSION_NORMAL = 0x00000001,
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};
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/// Map application or GSP heap memory
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Result ControlMemory(u32* out_addr, u32 operation, u32 addr0, u32 addr1, u32 size, u32 permissions) {
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DEBUG_LOG(SVC,"called operation=0x%08X, addr0=0x%08X, addr1=0x%08X, size=%08X, permissions=0x%08X",
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@ -62,11 +57,15 @@ Result ControlMemory(u32* out_addr, u32 operation, u32 addr0, u32 addr1, u32 siz
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Result MapMemoryBlock(Handle handle, u32 addr, u32 permissions, u32 other_permissions) {
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DEBUG_LOG(SVC, "called memblock=0x08X, addr=0x%08X, mypermissions=0x%08X, otherpermission=%d",
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handle, addr, permissions, other_permissions);
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switch (permissions) {
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case MEMORY_PERMISSION_NORMAL:
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case MEMORY_PERMISSION_NORMAL + 1:
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case MEMORY_PERMISSION_NORMAL + 2:
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Kernel::MapSharedMemory(handle, addr, permissions, other_permissions);
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Kernel::MemoryPermission permissions_type = static_cast<Kernel::MemoryPermission>(permissions);
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switch (permissions_type) {
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case Kernel::MemoryPermission::Read:
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case Kernel::MemoryPermission::Write:
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case Kernel::MemoryPermission::ReadWrite:
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case Kernel::MemoryPermission::DontCare:
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Kernel::MapSharedMemory(handle, addr, permissions_type,
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static_cast<Kernel::MemoryPermission>(other_permissions));
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break;
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default:
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ERROR_LOG(OSHLE, "unknown permissions=0x%08X", permissions);
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