Loader: Add Nso Header loading, loadset validation in CreateProcess

stratosphere/loader/source/ldr_nso.hpp

@@ -0,0 +1,73 @@
+#pragma once
+#include <switch.h>
+
+#define MAGIC_NSO0 0x304F534E
+#define NSO_NUM_MAX 13
+
+class NsoUtils {
+    public:
+        struct NsoSegment {
+            u32 file_offset;
+            u32 dst_offset;
+            u32 decomp_size;
+            u32 align_or_total_size;
+        };
+        
+        struct NsoHeader {
+            u32 magic;
+            u32 _0x4;
+            u32 _0x8;
+            u32 flags;
+            NsoSegment segments[3];
+            u8 build_id[0x20];
+            u32 compressed_sizes[3];
+            u8 _0x6C[0x24];
+            u64 dynstr_extents;
+            u64 dynsym_extents;
+            u8 section_hashes[3][0x20];
+        };
+        
+        
+        static_assert(sizeof(NsoHeader) == 0x100, "Incorrectly defined NsoHeader!");
+        
+        static const char *GetNsoFileName(unsigned int index) {
+            switch (index) {
+                case 0:
+                    return "rtld";
+                case 1:
+                    return "main";
+                case 2:
+                    return "subsdk0";
+                case 3:
+                    return "subsdk1";
+                case 4:
+                    return "subsdk2";
+                case 5:
+                    return "subsdk3";
+                case 6:
+                    return "subsdk4";
+                case 7:
+                    return "subsdk5";
+                case 8:
+                    return "subsdk6";
+                case 9:
+                    return "subsdk7";
+                case 10:
+                    return "subsdk8";
+                case 11:
+                    return "subsdk9";
+                case 12:
+                    return "sdk";
+                default:
+                    /* TODO: Panic. */
+                    return "?";
+            }
+        }
+        
+        static void GetNsoCodePath(char *content_path, unsigned int index);
+        static void GetNsoSdPath(char *content_path, u64 title_id, unsigned int index);
+        
+        static bool IsNsoPresent(unsigned int index);
+        static Result LoadNsoHeaders(u64 title_id);
+        static Result ValidateNsoLoadSet();
+};