Better process implementation (#491)

* Initial implementation of KProcess

* Some improvements to the memory manager, implement back guest stack trace printing

* Better GetInfo implementation, improve checking in some places with information from process capabilities

* Allow the cpu to read/write from the correct memory locations for accesses crossing a page boundary

* Change long -> ulong for address/size on memory related methods to avoid unnecessary casts

* Attempt at implementing ldr:ro with new KProcess

* Allow BSS with size 0 on ldr:ro

* Add checking for memory block slab heap usage, return errors if full, exit gracefully

* Use KMemoryBlockSize const from KMemoryManager

* Allow all methods to read from non-contiguous locations

* Fix for TransactParcelAuto

* Address PR feedback, additionally fix some small issues related to the KIP loader and implement SVCs GetProcessId, GetProcessList, GetSystemInfo, CreatePort and ManageNamedPort

* Fix wrong check for source pages count from page list on MapPhysicalMemory

* Fix some issues with UnloadNro on ldr:ro

1 files changed, 11 insertions, 7 deletions

diff --git a/ChocolArm64/Memory/MemoryHelper.cs b/ChocolArm64/Memory/MemoryHelper.cs
index 2e721afa..1c436dd8 100644
--- a/ChocolArm64/Memory/MemoryHelper.cs
+++ b/ChocolArm64/Memory/MemoryHelper.cs
@@ -26,22 +26,26 @@ namespace ChocolArm64.Memory
         {
             long size = Marshal.SizeOf<T>();
 
-            memory.EnsureRangeIsValid(position, size);
+            byte[] data = memory.ReadBytes(position, size);
 
-            IntPtr ptr = (IntPtr)memory.Translate(position);
-
-            return Marshal.PtrToStructure<T>(ptr);
+            fixed (byte* ptr = data)
+            {
+                return Marshal.PtrToStructure<T>((IntPtr)ptr);
+            }
         }
 
         public unsafe static void Write<T>(MemoryManager memory, long position, T value) where T : struct
         {
             long size = Marshal.SizeOf<T>();
 
-            memory.EnsureRangeIsValid(position, size);
+            byte[] data = new byte[size];
 
-            IntPtr ptr = (IntPtr)memory.TranslateWrite(position);
+            fixed (byte* ptr = data)
+            {
+                Marshal.StructureToPtr<T>(value, (IntPtr)ptr, false);
+            }
 
-            Marshal.StructureToPtr<T>(value, ptr, false);
+            memory.WriteBytes(position, data);
         }
 
         public static string ReadAsciiString(MemoryManager memory, long position, long maxSize = -1)