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Based on the NSO page.
[[Category:File formats]]
NRO is the executable format for non-[[ExeFS]] binaries.
It starts with the NRO-start structure then the "NRO" header and mainly describes .text, .rodata, and .data segments (like a short-form of ELF program headers):
= NRO Start =
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x4
| Unused
|-
| 0x4
| 0x4
| [[NSO|MOD0]] offset
|-
| 0x8
| 0x8
| Padding
|}
= NRO Header =
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 4
| Magic "NRO0"
|-
| 0x4
| 4
| ?
|-
| 0x8
| 4
| Total NRO filesize
|-
| 0xC
| 4
| ?
|-
| 0x10
| 0x8 * 3
| SegmentHeader[3]
|-
| 0x28
| 0x4
| bssSize
|-
| 0x2C
| 0x4
| ?
|-
| 0x30
| 0x20
| Value of "build id" from ELF's GNU .note section. Contains variable sized digest, up to 32bytes.
|-
| 0x50
| 0x10
| Padding
|-
| 0x60
| 0x10
| ?
|}
== SegmentHeader ==
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 4
| FileOffset
|-
| 0x4
| 4
| Size
|}
NRO is the executable format for non-[[ExeFS]] binaries.
It starts with the NRO-start structure then the "NRO" header and mainly describes .text, .rodata, and .data segments (like a short-form of ELF program headers):
= NRO Start =
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x4
| Unused
|-
| 0x4
| 0x4
| [[NSO|MOD0]] offset
|-
| 0x8
| 0x8
| Padding
|}
= NRO Header =
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 4
| Magic "NRO0"
|-
| 0x4
| 4
| ?
|-
| 0x8
| 4
| Total NRO filesize
|-
| 0xC
| 4
| ?
|-
| 0x10
| 0x8 * 3
| SegmentHeader[3]
|-
| 0x28
| 0x4
| bssSize
|-
| 0x2C
| 0x4
| ?
|-
| 0x30
| 0x20
| Value of "build id" from ELF's GNU .note section. Contains variable sized digest, up to 32bytes.
|-
| 0x50
| 0x10
| Padding
|-
| 0x60
| 0x10
| ?
|}
== SegmentHeader ==
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 4
| FileOffset
|-
| 0x4
| 4
| Size
|}