NSO: Difference between revisions

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@@ Line 2: / Line 2: @@
 It starts with the "NSO" header and mainly describes .text, .rodata, and .data segments (like a short-form of ELF program headers):
+=== SegmentHeader ===
+{| class="wikitable" border="1"
+|-
+! Offset
+! Size
+! Description
+|-
+| 0x0
+| 4
+| file offset of data
+|-
+| 0x4
+| 4
+| memory offset loaded to
+|-
+| 0x8
+| 4
+| size of data copied to memory offset (i.e. size after decompression)
+|-
+| 0xC
+| 4
+| alignment used on memory size / size of .bss in the case of .data segment
+|}
 === .rodata-relative extent ===
@@ Line 32: / Line 56: @@
 | 0x4
 | 4
-| Version
+|
 |-
 | 0x8
 | 4
-| Reserved1
+|
 |-
 | 0xC
 | 4
-| Flags: TextCompress = 1, RoCompress = 2, DataCompress = 4, TextHash = 8, RoHash = 0x10, DataHash = 0x20
+| Always 0x3f?
 |-
 | 0x10
-| 4
+| 0x10 * 3
-| TextFileOffset
+| SegmentHeader for each segment
-|-
-| 0x14
-| 4
-| TextMemoryOffset
-|-
-| 0x18
-| 4
-| TextSize
-|-
-| 0x1C
-| 4
-| ModuleNameOffset
-|-
-| 0x20
-| 4
-| RoFileOffset
-|-
-| 0x24
-| 4
-| RoMemoryOffset
-|-
-| 0x28
-| 4
-| RoSize
-|-
-| 0x2C
-| 4
-| ModuleNameSize
-|-
-| 0x30
-| 4
-| DataFileOffset
-|-
-| 0x34
-| 4
-| DataMemoryOffset
-|-
-| 0x38
-| 4
-| DataSize
-|-
-| 0x3C
-| 4
-| BssSize
 |-
 | 0x40
@@ Line 95: / Line 75: @@
 |-
 | 0x60
-| 0x4
+| 0x4 * 3
-| TextFileSize
+| file size of each segment (i.e. LZ4-compressed size)
-|-
-| 0x64
-| 0x4
-| RoFileSize
-|-
-| 0x68
-| 0x4
-| DataFileSize
 |-
 | 0x6c