Add support for decrypted NCA files (#567)

* Start to add NCA support in loader

* More nca stuff

* More changes to nca.cpp

* Now identifies decrypted NCA cont.

* Game list fixes and more structs and stuff

* More updates to Nca class

* Now reads ExeFs (i think)

* ACTUALLY LOADS EXEFS!

* RomFS loads and games execute

* Cleanup and Finalize

* plumbing, cleanup and testing

* fix some things that i didnt think of before

* Preliminary Review Changes

* Review changes for bunnei and subv

1 files changed, 10 insertions, 0 deletions

diff --git a/src/core/loader/loader.cpp b/src/core/loader/loader.cpp
index 6a4fd38cb..20cc0bac0 100644
--- a/src/core/loader/loader.cpp
+++ b/src/core/loader/loader.cpp
@@ -9,6 +9,7 @@
 #include "core/hle/kernel/process.h"
 #include "core/loader/deconstructed_rom_directory.h"
 #include "core/loader/elf.h"
+#include "core/loader/nca.h"
 #include "core/loader/nro.h"
 #include "core/loader/nso.h"
 
@@ -32,6 +33,7 @@ FileType IdentifyFile(FileUtil::IOFile& file, const std::string& filepath) {
     CHECK_TYPE(ELF)
     CHECK_TYPE(NSO)
     CHECK_TYPE(NRO)
+    CHECK_TYPE(NCA)
 
 #undef CHECK_TYPE
 
@@ -57,6 +59,8 @@ FileType GuessFromExtension(const std::string& extension_) {
         return FileType::NRO;
     else if (extension == ".nso")
         return FileType::NSO;
+    else if (extension == ".nca")
+        return FileType::NCA;
 
     return FileType::Unknown;
 }
@@ -69,6 +73,8 @@ const char* GetFileTypeString(FileType type) {
         return "NRO";
     case FileType::NSO:
         return "NSO";
+    case FileType::NCA:
+        return "NCA";
     case FileType::DeconstructedRomDirectory:
         return "Directory";
     case FileType::Error:
@@ -104,6 +110,10 @@ static std::unique_ptr<AppLoader> GetFileLoader(FileUtil::IOFile&& file, FileTyp
     case FileType::NRO:
         return std::make_unique<AppLoader_NRO>(std::move(file), filepath);
 
+    // NX NCA file format.
+    case FileType::NCA:
+        return std::make_unique<AppLoader_NCA>(std::move(file), filepath);
+
     // NX deconstructed ROM directory.
     case FileType::DeconstructedRomDirectory:
         return std::make_unique<AppLoader_DeconstructedRomDirectory>(std::move(file), filepath);