Clean up some warnings

src/core/file_sys/archive_backend.h

@@ -143,7 +143,16 @@ public:
             case Char:
                 return std::vector<u8>(string.begin(), string.end());
             case Wchar:
-                return std::vector<u8>(u16str.begin(), u16str.end());
+            {
+                // use two u8 for each character of u16str
+                std::vector<u8> to_return(u16str.size() * 2);
+                for (size_t i = 0; i < u16str.size(); ++i) {
+                    u16 tmp_char = u16str.at(i);
+                    to_return[i*2] = (tmp_char & 0xFF00) >> 8;
+                    to_return[i*2 + 1] = (tmp_char & 0x00FF);
+                }
+                return to_return;
+            }
             case Empty:
                 return {};
             default:

src/core/hle/kernel/semaphore.cpp

@@ -20,8 +20,8 @@ public:
     static Kernel::HandleType GetStaticHandleType() { return Kernel::HandleType::Semaphore; }
     Kernel::HandleType GetHandleType() const override { return Kernel::HandleType::Semaphore; }
 
-    u32 max_count;                              ///< Maximum number of simultaneous holders the semaphore can have
-    u32 available_count;                        ///< Number of free slots left in the semaphore
+    s32 max_count;                              ///< Maximum number of simultaneous holders the semaphore can have
+    s32 available_count;                        ///< Number of free slots left in the semaphore
     std::queue<Handle> waiting_threads;         ///< Threads that are waiting for the semaphore
     std::string name;                           ///< Name of semaphore (optional)
 
@@ -49,8 +49,8 @@ public:
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
-ResultCode CreateSemaphore(Handle* handle, u32 initial_count, 
-    u32 max_count, const std::string& name) {
+ResultCode CreateSemaphore(Handle* handle, s32 initial_count, 
+    s32 max_count, const std::string& name) {
 
     if (initial_count > max_count)
         return ResultCode(ErrorDescription::InvalidCombination, ErrorModule::Kernel,

src/core/hle/kernel/semaphore.h

@@ -18,7 +18,7 @@ namespace Kernel {
  * @param name Optional name of semaphore
  * @return ResultCode of the error
  */
-ResultCode CreateSemaphore(Handle* handle, u32 initial_count, u32 max_count, const std::string& name = "Unknown");
+ResultCode CreateSemaphore(Handle* handle, s32 initial_count, s32 max_count, const std::string& name = "Unknown");
 
 /**
  * Releases a certain number of slots from a semaphore.

src/core/loader/3dsx.cpp

@@ -223,9 +223,7 @@ int THREEDSXReader::Load3DSXFile(const std::string& filename, u32 base_addr)
         LOG_INFO(Loader, "Loading 3DSX file %s...", filename.c_str());
         FileUtil::IOFile file(filename, "rb");
         if (file.IsOpen()) {
-
-            THREEDSXReader reader;
-            reader.Load3DSXFile(filename, 0x00100000);
+            THREEDSXReader::Load3DSXFile(filename, 0x00100000);
             Kernel::LoadExec(0x00100000);
         } else {
             return ResultStatus::Error;