NSO structs (thanks 0Liam).

code_templates/system_title_dumper.c

@@ -225,6 +225,7 @@ int main(int argc, char *argv[])
     
     int ret = 0;
     
+    utilsWriteLogBufferToLogFile("________________________________________________________________");
     LOGFILE(APP_TITLE " starting.");
     
     consoleInit(NULL);

code_templates/usb_gc_dumper.c

@@ -188,6 +188,7 @@ int main(int argc, char *argv[])
     Menu *cur_menu = &g_rootMenu;
     u32 element_count = menuGetElementCount(cur_menu), page_size = 30;
     
+    utilsWriteLogBufferToLogFile("________________________________________________________________");
     LOGFILE(APP_TITLE " starting.");
     
     consoleInit(NULL);

code_templates/usb_romfs_dumper.c

@@ -306,6 +306,7 @@ int main(int argc, char *argv[])
     
     int ret = 0;
     
+    utilsWriteLogBufferToLogFile("________________________________________________________________");
     LOGFILE(APP_TITLE " starting.");
     
     consoleInit(NULL);

code_templates/xml_generator.c

@@ -41,6 +41,7 @@ int main(int argc, char *argv[])
     
     int ret = 0;
     
+    utilsWriteLogBufferToLogFile("________________________________________________________________");
     LOGFILE(APP_TITLE " starting.");
     
     consoleInit(NULL);

source/nso.c

@@ -0,0 +1,23 @@
+/*
+ * nso.c
+ *
+ * Copyright (c) 2020, DarkMatterCore <pabloacurielz@gmail.com>.
+ *
+ * This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
+ *
+ * nxdumptool is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * nxdumptool is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "utils.h"
+#include "nso.h"
+

source/nso.h

@@ -0,0 +1,119 @@
+/*
+ * nso.h
+ *
+ * Copyright (c) 2020, DarkMatterCore <pabloacurielz@gmail.com>.
+ *
+ * This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
+ *
+ * nxdumptool is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * nxdumptool is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#ifndef __NSO_H__
+#define __NSO_H__
+
+#define NSO_HEADER_MAGIC    0x4E534F30  /* "NSO0". */
+#define NSO_MOD_MAGIC       0x4D4F4430  /* "MOD0". */
+#define NSO_LNY_MAGIC       0x4C4E5930  /* "LNY0". */
+
+typedef enum {
+    NsoFlags_TextCompress = BIT(0), ///< Determines if .text segment is LZ4-compressed.
+    NsoFlags_RoCompress   = BIT(1), ///< Determines if .rodata segment is LZ4-compressed.
+    NsoFlags_DataCompress = BIT(2), ///< Determines if .data segment is LZ4-compressed.
+    NsoFlags_TextHash     = BIT(3), ///< Determines if .text segment hash must be checked during load.
+    NsoFlags_RoHash       = BIT(4), ///< Determines if .rodata segment hash must be checked during load.
+    NsoFlags_DataHash     = BIT(5)  ///< Determines if .data segment hash must be checked during load.
+} NsoFlags;
+
+typedef struct {
+    u32 file_offset;    ///< NSO segment offset.
+    u32 memory_offset;  ///< Memory segment offset.
+    u32 size;           ///< Decompressed segment size.
+} NsoSegmentHeader;
+
+typedef struct {
+    u32 offset; ///< Relative to the .rodata segment start.
+    u32 size;
+} NsoSectionHeader;
+
+/// This is the start of every NSO.
+/// This is always followed by a NsoModuleName block.
+typedef struct {
+    u32 magic;                                  ///< "NSO0".
+    u32 version;                                ///< Always set to 0.
+    u8 reserved_1[0x4];
+    u32 flags;                                  ///< NsoFlags.
+    NsoSegmentHeader text_segment_header;
+    u32 module_name_offset;                     ///< NsoModuleName block offset.
+    NsoSegmentHeader rodata_segment_header;
+    u32 module_name_size;                       ///< NsoModuleName block size.
+    NsoSegmentHeader data_segment_header;
+    u32 bss_size;
+    u8 module_id[0x20];                         ///< Also known as build ID.
+    u32 text_file_size;                         ///< .text segment compressed size (if NsoFlags_TextCompress is enabled).
+    u32 rodata_file_size;                       ///< .rodata segment compressed size (if NsoFlags_RoCompress is enabled).
+    u32 data_file_size;                         ///< .data segment compressed size (if NsoFlags_DataCompress is enabled).
+    u8 reserved_2[0x1C];
+    NsoSectionHeader api_info_section_header;
+    NsoSectionHeader dynstr_section_header;
+    NsoSectionHeader dynsym_section_header;
+    u8 text_segment_hash[0x20];                 ///< Decompressed .text segment SHA-256 checksum.
+    u8 rodata_segment_hash[0x20];               ///< Decompressed .rodata segment SHA-256 checksum.
+    u8 data_segment_hash[0x20];                 ///< Decompressed .data segment SHA-256 checksum.
+} NsoHeader;
+
+/// Usually placed right after NsoHeader, but it's actual offset may vary.
+/// If the 'module_name_size' member from NsoHeader is greater than 1 and the 'name_length' element from NsoModuleName is greater than 0, 'name' will hold the module name.
+typedef struct {
+    u8 name_length;
+    char name[];
+} NsoModuleName;
+
+/// Placed at the very start of the decompressed .text segment.
+typedef struct {
+    u32 entry_point;
+    u32 mod_offset;     ///< NsoModHeader block offset (relative to the start of this header). Almost always set to 0x8 (the size of this struct).
+} NsoModStart;
+
+/// This is essentially a replacement for the PT_DYNAMIC program header available in ELF binaries.
+/// All offsets are signed 32-bit values relative to the start of this header.
+/// This is usually placed at the start of the decompressed .text segment, right after a NsoModStart block.
+/// However, in some NSOs, it can instead be placed at the start of the uncompressed .rodata segment, right after its NsoModuleInfo block.
+/// In these cases, the 'mod_offset' value from the NsoModStart block will point to an offset within the .rodata segment.
+typedef struct  {
+    u32 magic;                      ///< "MOD0".
+    s32 dynamic_offset;
+    s32 bss_start_offset;
+    s32 bss_end_offset;
+    s32 eh_frame_hdr_start_offset;
+    s32 eh_frame_hdr_end_offset;
+    s32 module_object_offset;       ///< Typically equal to .bss base.
+} NsoModHeader;
+
+/// Placed right after the NsoModHeader block (decompressed .text segment only).
+/// Only valid if the 'magic' member holds the expected value.
+typedef struct {
+    u32 magic;              ///< "LNY0".
+    u32 got_start_offset;
+    u32 got_end_offset;
+} NsoLnyHeader;
+
+/// Placed at the start of the decompressed .rodata segment + 0x4.
+/// If the 'name_length' element is greater than 0, 'name' will hold the module name.
+typedef struct {
+    u32 name_length;
+    char name[];
+} NsoModuleInfo;
+
+#endif /* __NSO_H__ */