Difference between revisions of "3DSX Format"
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(Created page with "The 3DSX format is an executable file-format designed for homebrew applications on the 3DS. The file is structured like this: * Header * Code segment * Rodata segment * Data seg...") |
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The file is structured like this: | The file is structured like this: | ||
* Header | * Header | ||
| + | * Extended Header, if the header size field is greater than 32. | ||
| + | * Code relocation table header | ||
| + | * Rodata relocation table header | ||
| + | * Data relocation table header | ||
* Code segment | * Code segment | ||
* Rodata segment | * Rodata segment | ||
* Data segment | * Data segment | ||
| − | * | + | * Code relocation table |
| − | * | + | * Rodata relocation table |
| − | * | + | * Data relocation table |
| + | * [[SMDH]] data, if there is an extended header. | ||
| + | * [[RomFS]] data, if there is an extended header. | ||
== Header == | == Header == | ||
| Line 22: | Line 28: | ||
|- | |- | ||
| 0x4 | | 0x4 | ||
| − | | | + | | 2 |
| Header size | | Header size | ||
| + | |- | ||
| + | | 0x6 | ||
| + | | 2 | ||
| + | | Relocation Header size | ||
|- | |- | ||
| 0x8 | | 0x8 | ||
| 4 | | 4 | ||
| − | | | + | | Format version |
|- | |- | ||
| 0xC | | 0xC | ||
| 4 | | 4 | ||
| − | | | + | | Flags |
|- | |- | ||
| 0x10 | | 0x10 | ||
| 4 | | 4 | ||
| − | | | + | | Code segment size |
|- | |- | ||
| 0x14 | | 0x14 | ||
| 4 | | 4 | ||
| − | | | + | | Rodata segment size |
|- | |- | ||
| 0x18 | | 0x18 | ||
| 4 | | 4 | ||
| − | | | + | | Data segment size (including bss) |
|- | |- | ||
| 0x1C | | 0x1C | ||
| 4 | | 4 | ||
| − | | | + | | Bss segment size |
| + | |} | ||
| + | |||
| + | == Extended Header == | ||
| + | {| class="wikitable" border="1" | ||
| + | |- | ||
| + | ! Offset | ||
| + | ! Size | ||
| + | ! Description | ||
| + | |- | ||
| + | | 0x0 | ||
| + | | 4 | ||
| + | | [[SMDH]] offset | ||
| + | |- | ||
| + | | 0x4 | ||
| + | | 4 | ||
| + | | [[SMDH]] size | ||
|- | |- | ||
| − | | | + | | 0x8 |
| 4 | | 4 | ||
| − | | | + | | [[RomFS]] offset |
|} | |} | ||
Latest revision as of 22:34, 21 November 2015
The 3DSX format is an executable file-format designed for homebrew applications on the 3DS.
The file is structured like this:
- Header
- Extended Header, if the header size field is greater than 32.
- Code relocation table header
- Rodata relocation table header
- Data relocation table header
- Code segment
- Rodata segment
- Data segment
- Code relocation table
- Rodata relocation table
- Data relocation table
- SMDH data, if there is an extended header.
- RomFS data, if there is an extended header.
Header[edit]
| Offset | Size | Description |
|---|---|---|
| 0x0 | 4 | Magic (3DSX) |
| 0x4 | 2 | Header size |
| 0x6 | 2 | Relocation Header size |
| 0x8 | 4 | Format version |
| 0xC | 4 | Flags |
| 0x10 | 4 | Code segment size |
| 0x14 | 4 | Rodata segment size |
| 0x18 | 4 | Data segment size (including bss) |
| 0x1C | 4 | Bss segment size |
Extended Header[edit]
| Offset | Size | Description |
|---|---|---|
| 0x0 | 4 | SMDH offset |
| 0x4 | 4 | SMDH size |
| 0x8 | 4 | RomFS offset |
Relocation Header[edit]
| Offset | Size | Description |
|---|---|---|
| 0x0 | 4 | Number of absolute relocations |
| 0x4 | 4 | Number of relative relocations |
Relocation[edit]
| Offset | Size | Description |
|---|---|---|
| 0x0 | 2 | Number of words to skip |
| 0x2 | 2 | Number of words to patch |