patterns: Added Nintendo Switch NRO format pattern (#22)

* add intel_hex format (#15)

* pattern: Added Nintendo Switch NACP file format pattern (#21)

* patterns: Added Nintendo Switch NRO format pattern

Co-authored-by: Matt Farstad <matthewwilliamfarstad@gmail.com>

README.md

@@ -20,6 +20,7 @@ Hex patterns, include patterns and magic files for the use with the ImHex Hex Ed
 | AFE2 | | `patterns/afe2.hexpat` | Nintendo Switch Atmosphère CFW Fatal Error log | 
 | AR | `application/x-archive` | `patterns/ar.hexpat` | Static library archive files | 
 | NACP | | `patterns/nacp.hexpat` | Nintendo Switch NACP files | 
+| NRO | | `patterns/nro.hexpat` | Nintendo Switch NRO files | 
 | Java Class | `application/x-java-applet` | `patterns/java_class.hexpat` | Java Class files | 
 
 ### Pattern Libraries

patterns/nro.hexpat

@@ -0,0 +1,70 @@
+struct MOD0 {
+	char magic[4];
+	u32 dynamic_offset [[name(".dynamic offset")]];
+	u32 bss_start_offset [[name(".bss start offset")]];
+	u32 bss_end_offset [[name(".bss end offset")]];
+	u32 eh_frane_hdr_start_offset [[name(".eh_frame_hdr start offset")]];
+	u32 eh_frane_hdr_end_offset [[name(".eh_frame_hdr end offset")]];
+	u32 runtime_generated_module_object_offset;
+};
+
+struct Start {
+	padding[4];
+	MOD0 *mod0 : u32;
+	char hb_magic[8];
+};
+
+struct SegmentHeader {
+	u32 offset;
+	u32 size;
+};
+
+struct Header {
+	char magic[4];
+	u32 version;
+	u32 file_size;
+	u32 flags;
+	SegmentHeader segment_header_1[3];
+	u32 bss_size;
+	padding[4];
+	u8 module_id[0x20];
+	u32 dso_handle_offset;
+	padding[4];
+	SegmentHeader segment_header_2[3];
+};
+
+struct AssetSection {
+	u8 *asset_offset : u64 [[pointer_base("asset_ptr")]];
+	u64 size;
+};
+
+struct AssetHeader {
+	if (is_homebrew()) {
+		char magic[4];
+		u32 version;
+		AssetSection icon;
+		AssetSection nacp;
+		AssetSection romfs;
+	}
+};
+
+
+fn asset_ptr(u128 offset) {
+	return header.file_size;
+};
+
+fn is_homebrew() {
+	return start.hb_magic == "HOMEBREW";
+};
+
+
+Start start @ 0x00;
+Header header @ $;
+std::assert(header.magic == "NRO0", "Invalid NRO File!");
+
+AssetHeader assets @ header.file_size;
+
+fn main() {
+	if (is_homebrew())
+		std::print("This is a Homebrew NRO!");
+};