NRO0 - Revision history

Ootulp: Ootulp moved page NRO to NRO0

2025-12-19T06:25:16Z

Ootulp moved page NRO to NRO0

← Older revision		Revision as of 09:25, 19 December 2025
(No difference)

Hexkyz at 21:32, 25 September 2024

2024-09-25T19:32:10Z

Show changes

Yellows8: /* Start */

2024-06-12T00:07:42Z

Start

← Older revision		Revision as of 04:07, 12 June 2024
Line 12:		Line 12:
	\| 0x0		\| 0x0
	\| 0x4		\| 0x4
	\| Unused		\| Unused. Originally 0x0, with [17.0.0+] this is set to value 0x1.
	\|-		\|-
	\| 0x4		\| 0x4
Line 19:		Line 19:
	\|-		\|-
	\| 0x8		\| 0x8
	\| ~~0x8~~		\| 0x4
			\| [1.0.0-16.1.0] Padding. [17.0.0+] [[NSO\|nnSdk version]] offset
			\|-
			\| 0xC
			\| 0x4
	\| Padding		\| Padding
	\|}		\|}

Hexkyz: /* Header */

2020-02-22T16:37:55Z

Header

← Older revision		Revision as of 19:37, 22 February 2020
Line 60:		Line 60:
	\| 0x30		\| 0x30
	\| 0x20		\| 0x20
	\| [[#ModuleId]]		\| [[#ModuleId\|ModuleId]]
	\|-		\|-
	\| 0x50		\| 0x50

Hexkyz at 17:37, 22 February 2020

2020-02-22T16:37:33Z

← Older revision		Revision as of 19:37, 22 February 2020
Line 1:		Line 1:
	~~[[Category:File formats]]~~
	NRO is the executable format for non-[[ExeFS]] binaries.		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):		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 =		= Start =
	{\| class="wikitable" border="1"		{\| class="wikitable" border="1"
	\|-		\|-
Line 24:		Line 23:
	\|}		\|}

	= ~~NRO~~ Header =		= Header =
	{\| class="wikitable" border="1"		{\| class="wikitable" border="1"
	\|-		\|-
Line 37:		Line 36:
	\| 0x4		\| 0x4
	\| 0x4		\| 0x4
	\| ~~NRO Format~~ Version (~~Always~~ 0)		\| Version (always 0)
	\|-		\|-
	\| 0x8		\| 0x8
	\| 4		\| 4
	\| ~~size~~ (~~Total~~ NRO ~~filesize~~)		\| Size (total NRO file size)
	\|-		\|-
	\| 0xC		\| 0xC
	\| 0x4		\| 0x4
	\| Flags (~~Unused~~)		\| Flags (unused)
	\|-		\|-
	\| 0x10		\| 0x10
	\| 0x8 * 3		\| 0x8 * 3
	\| SegmentHeader[3] {.text, .ro, .data}		\| [[#SegmentHeader\|SegmentHeader]][3] {.text, .ro, .data}
	\|-		\|-
	\| 0x28		\| 0x28
	\| 0x4		\| 0x4
	\| ~~bssSize~~		\| BssSize
	\|-		\|-
	\| 0x2C		\| 0x2C
	\| 0x4		\| 0x4
	\| Reserved ~~(Unused)~~		\| Reserved
	\|-		\|-
	\| 0x30		\| 0x30
	\| 0x20		\| 0x20
	\| ~~Value of "build id" from ELF's GNU .note section. Contains variable sized digest, up to 32bytes.~~		\| [[#ModuleId]]
	\|-		\|-
	\| 0x50		\| 0x50
	\| ~~0x08~~		\| 0x04
	\| Reserved (~~Unused~~)		\| DsoHandleOffset (unused)
			\|-
			\| 0x54
			\| 0x04
			\| Reserved (unused)
	\|-		\|-
	\| 0x58		\| 0x58
	\| 0x8 * 3		\| 0x8 * 3
	\| SegmentHeader[3] {.apiInfo, .dynstr, .dynsym}		\| [[#SegmentHeader\|SegmentHeader]][3] {.apiInfo, .dynstr, .dynsym}
	\|-
	\|}		\|}

Line 82:		Line 84:
	\| 0x0		\| 0x0
	\| 0x4		\| 0x4
	\| ~~FileOffset~~		\| MemoryOffset
	\|-		\|-
	\| 0x4		\| 0x4
Line 89:		Line 91:
	\|}		\|}

	=Assets=		== ModuleId ==
			Value of "build id" from ELF's GNU .note section. Contains variable sized digest, up to 32bytes.

			= Assets =
	This is an optional custom assets section for homebrew, this is located at file offset {NroHeader.size}. See also [https://github.com/switchbrew/switch-tools switch-tools] for implementation.		This is an optional custom assets section for homebrew, this is located at file offset {NroHeader.size}. See also [https://github.com/switchbrew/switch-tools switch-tools] for implementation.

Line 120:		Line 125:
	\| 0x10		\| 0x10
	\| AssetSection romfs. Can be used by the application.		\| AssetSection romfs. Can be used by the application.
	\|-
	\|}		\|}

Hexkyz at 17:44, 19 May 2019

2019-05-19T15:44:06Z

← Older revision		Revision as of 19:44, 19 May 2019
Line 115:		Line 115:
	\| 0x18		\| 0x18
	\| 0x10		\| 0x10
	\| AssetSection [[~~Control.nacp~~\|~~nacp~~]]. Used by the Homebrew Launcher.		\| AssetSection [[NACP_Format\|NACP]]. Used by the Homebrew Launcher.
	\|-		\|-
	\| 0x28		\| 0x28

FrasierCrane: Finalized NRO format. (Except the NRO start, can't seem to find where this is touched at all. Hope this helps!)

2018-05-10T00:35:36Z

Finalized NRO format. (Except the NRO start, can't seem to find where this is touched at all. Hope this helps!)

← Older revision		Revision as of 04:35, 10 May 2018
Line 49:		Line 49:
	\| 0x10		\| 0x10
	\| 0x8 * 3		\| 0x8 * 3
	\| SegmentHeader[3]		\| SegmentHeader[3] {.text, .ro, .data}
	\|-		\|-
	\| 0x28		\| 0x28
Line 64:		Line 64:
	\|-		\|-
	\| 0x50		\| 0x50
	\| ~~0x10~~		\| 0x08
	\| ~~Padding~~		\| Reserved (Unused)
			\|-
			\| 0x58
			\| 0x8 * 3
			\| SegmentHeader[3] {.apiInfo, .dynstr, .dynsym}
	\|-		\|-
	~~\| 0x60~~
	~~\| 0x10~~
	~~\| ?~~
	\|}		\|}

FrasierCrane: Update some missing NRO headers.

2018-05-09T17:24:22Z

Update some missing NRO headers.

← Older revision		Revision as of 21:24, 9 May 2018
Line 37:		Line 37:
	\| 0x4		\| 0x4
	\| 0x4		\| 0x4
	\| ?		\| NRO Format Version (Always 0)
	\|-		\|-
	\| 0x8		\| 0x8
Line 45:		Line 45:
	\| 0xC		\| 0xC
	\| 0x4		\| 0x4
	\| ?		\| Flags (Unused)
	\|-		\|-
	\| 0x10		\| 0x10
Line 57:		Line 57:
	\| 0x2C		\| 0x2C
	\| 0x4		\| 0x4
	\| ?		\| Reserved (Unused)
	\|-		\|-
	\| 0x30		\| 0x30

Yellows8: /* Assets */ ugh

2018-02-23T23:27:10Z

Assets: ugh

← Older revision		Revision as of 02:27, 24 February 2018
Line 109:		Line 109:
	\|-		\|-
	\| 0x8		\| 0x8
	\| ~~0x8~~		\| 0x10
	\| AssetSection icon. Used by the Homebrew Launcher. Like official icons, this is a 256x256 JPEG.		\| AssetSection icon. Used by the Homebrew Launcher. Like official icons, this is a 256x256 JPEG.
	\|-		\|-
			\| 0x18
	\| 0x10		\| 0x10
	~~\| 0x8~~
	\| AssetSection [[Control.nacp\|nacp]]. Used by the Homebrew Launcher.		\| AssetSection [[Control.nacp\|nacp]]. Used by the Homebrew Launcher.
	\|-		\|-
	\| ~~0x18~~		\| 0x28
	\| ~~0x8~~		\| 0x10
	\| AssetSection romfs. Can be used by the application.		\| AssetSection romfs. Can be used by the application.
	\|-		\|-
Line 130:		Line 130:
	\|-		\|-
	\| 0x0		\| 0x0
	\| ~~0x4~~		\| 0x8
	\| Offset		\| Offset
	\|-		\|-
	\| ~~0x4~~		\| 0x8
	\| ~~0x4~~		\| 0x8
	\| Size, 0 indicates this section is empty.		\| Size, 0 indicates this section is empty.
	\|}		\|}

Yellows8: /* Assets */

2018-02-18T19:53:15Z

Assets

← Older revision		Revision as of 22:53, 18 February 2018
Line 135:		Line 135:
	\| 0x4		\| 0x4
	\| 0x4		\| 0x4
	\| Size		\| Size, 0 indicates this section is empty.
	\|}		\|}