psp2rela

The module relocation config optimization tool.

Optimize the relocation config contained in modules created with the Vita SDK or any SDK derived from them, or any other SDK.

Build

Requires

Ubuntu or WSL2 or a machine that can build this project
Install zlib library

When you have everything you need, run ./build.sh and wait for the build to complete.

How to use

Specify the -src and -dst arguments on the command line.

-src=:input module path. As elf/self format.
-dst=:output module path. Specifying -dst= is optional, and if only -src= is used, only the conversion log will be output and the converted module will not be saved.

Example : ./psp2rela -src=./input_module.self -dst=./output_module.self

You can specify the flag with -flag=.

v: Show more logs depending on the number. 1:error/2:warn/3:info/4:debug/5:trace
f: Save the log to a file. The log file path can be specified with -log_dst=
s: Parses the rel config of the module specified by src and outputs it to the log. Also with this option, -dst= is ignored and only log output is available.
-text_addr: text address for relocation. example: -text_addr=0x81010000.
-data_addr: data address for relocation. example: -text_addr=0x81080000.
-static_mode: Convert to static elf after relocation.
-fetch_base: Fetch base from src elf instead of default address.

Example : ./psp2rela -src=./input_module.self -dst=./output_module.self -flag=vvvf -log_dst=./log.txt

Information

A. VitaSDK uses type0 only.

B. Official external SDK uses only type0 and type1.

C. Official internal SDK uses all.

type0 is 12-bytes, type1 is 8-bytes.

This tool should work well with the A and B SDKs and reduce the module size.

The ones created in the C SDK are already fully optimized because they are already using all types, but this tool may be able to further compress the rel config.

TODO

Check the validity of the module more.
Optimize code more