kernel: Implement MapTransferMemory and UnmapTransferMemory (#2386)

Based on my reversing of kernel 12.0.0

4 files changed, 110 insertions, 0 deletions

diff --git a/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs b/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs
index b3e202b3..d65a373d 100644
--- a/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs
+++ b/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs
@@ -1095,6 +1095,92 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
             return result;
         }
 
+        public KernelResult MapTransferMemory(int handle, ulong address, ulong size, KMemoryPermission permission)
+        {
+            if (!PageAligned(address))
+            {
+                return KernelResult.InvalidAddress;
+            }
+
+            if (!PageAligned(size) || size == 0)
+            {
+                return KernelResult.InvalidSize;
+            }
+
+            if (address + size <= address)
+            {
+                return KernelResult.InvalidMemState;
+            }
+
+            if (permission > KMemoryPermission.ReadAndWrite || permission == KMemoryPermission.Write)
+            {
+                return KernelResult.InvalidPermission;
+            }
+
+            KProcess currentProcess = KernelStatic.GetCurrentProcess();
+
+            KTransferMemory transferMemory = currentProcess.HandleTable.GetObject<KTransferMemory>(handle);
+
+            if (transferMemory == null)
+            {
+                return KernelResult.InvalidHandle;
+            }
+
+            if (currentProcess.MemoryManager.IsInvalidRegion(address, size) ||
+                currentProcess.MemoryManager.InsideHeapRegion(address, size) ||
+                currentProcess.MemoryManager.InsideAliasRegion(address, size))
+            {
+                return KernelResult.InvalidMemRange;
+            }
+
+            return transferMemory.MapIntoProcess(
+                currentProcess.MemoryManager,
+                address,
+                size,
+                currentProcess,
+                permission);
+        }
+
+        public KernelResult UnmapTransferMemory(int handle, ulong address, ulong size)
+        {
+            if (!PageAligned(address))
+            {
+                return KernelResult.InvalidAddress;
+            }
+
+            if (!PageAligned(size) || size == 0)
+            {
+                return KernelResult.InvalidSize;
+            }
+
+            if (address + size <= address)
+            {
+                return KernelResult.InvalidMemState;
+            }
+
+            KProcess currentProcess = KernelStatic.GetCurrentProcess();
+
+            KTransferMemory transferMemory = currentProcess.HandleTable.GetObject<KTransferMemory>(handle);
+
+            if (transferMemory == null)
+            {
+                return KernelResult.InvalidHandle;
+            }
+
+            if (currentProcess.MemoryManager.IsInvalidRegion(address, size) ||
+                currentProcess.MemoryManager.InsideHeapRegion(address, size) ||
+                currentProcess.MemoryManager.InsideAliasRegion(address, size))
+            {
+                return KernelResult.InvalidMemRange;
+            }
+
+            return transferMemory.UnmapFromProcess(
+                currentProcess.MemoryManager,
+                address,
+                size,
+                currentProcess);
+        }
+
         public KernelResult MapPhysicalMemory(ulong address, ulong size)
         {
             if (!PageAligned(address))
diff --git a/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall32.cs b/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall32.cs
index 97915d14..1875facb 100644
--- a/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall32.cs
+++ b/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall32.cs
@@ -135,6 +135,16 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
             return _syscall.CreateTransferMemory(address, size, permission, out handle);
         }
 
+        public KernelResult MapTransferMemory32([R(0)] int handle, [R(1)] uint address, [R(2)] uint size, [R(3)] KMemoryPermission permission)
+        {
+            return _syscall.MapTransferMemory(handle, address, size, permission);
+        }
+
+        public KernelResult UnmapTransferMemory32([R(0)] int handle, [R(1)] uint address, [R(2)] uint size)
+        {
+            return _syscall.UnmapTransferMemory(handle, address, size);
+        }
+
         public KernelResult MapPhysicalMemory32([R(0)] uint address, [R(1)] uint size)
         {
             return _syscall.MapPhysicalMemory(address, size);
diff --git a/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall64.cs b/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall64.cs
index 07ca4aae..c22397cf 100644
--- a/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall64.cs
+++ b/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall64.cs
@@ -152,6 +152,16 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
             return _syscall.CreateTransferMemory(address, size, permission, out handle);
         }
 
+        public KernelResult MapTransferMemory64([R(0)] int handle, [R(1)] ulong address, [R(2)] ulong size, [R(3)] KMemoryPermission permission)
+        {
+            return _syscall.MapTransferMemory(handle, address, size, permission);
+        }
+
+        public KernelResult UnmapTransferMemory64([R(0)] int handle, [R(1)] ulong address, [R(2)] ulong size)
+        {
+            return _syscall.UnmapTransferMemory(handle, address, size);
+        }
+
         public KernelResult MapPhysicalMemory64([R(0)] ulong address, [R(1)] ulong size)
         {
             return _syscall.MapPhysicalMemory(address, size);
diff --git a/Ryujinx.HLE/HOS/Kernel/SupervisorCall/SyscallTable.cs b/Ryujinx.HLE/HOS/Kernel/SupervisorCall/SyscallTable.cs
index 02b6fb3c..790a3179 100644
--- a/Ryujinx.HLE/HOS/Kernel/SupervisorCall/SyscallTable.cs
+++ b/Ryujinx.HLE/HOS/Kernel/SupervisorCall/SyscallTable.cs
@@ -73,6 +73,8 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
                 { 0x43, nameof(Syscall64.ReplyAndReceive64)                },
                 { 0x44, nameof(Syscall64.ReplyAndReceiveWithUserBuffer64)  },
                 { 0x45, nameof(Syscall64.CreateEvent64)                    },
+                { 0x51, nameof(Syscall64.MapTransferMemory64)              },
+                { 0x52, nameof(Syscall64.UnmapTransferMemory64)            },
                 { 0x65, nameof(Syscall64.GetProcessList64)                 },
                 { 0x6f, nameof(Syscall64.GetSystemInfo64)                  },
                 { 0x70, nameof(Syscall64.CreatePort64)                     },
@@ -138,6 +140,8 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
                 { 0x41, nameof(Syscall32.AcceptSession32)                 },
                 { 0x43, nameof(Syscall32.ReplyAndReceive32)               },
                 { 0x45, nameof(Syscall32.CreateEvent32)                   },
+                { 0x51, nameof(Syscall32.MapTransferMemory32)             },
+                { 0x52, nameof(Syscall32.UnmapTransferMemory32)           },
                 { 0x5F, nameof(Syscall32.FlushProcessDataCache32)         },
                 { 0x65, nameof(Syscall32.GetProcessList32)                },
                 { 0x6f, nameof(Syscall32.GetSystemInfo32)                 },