Metroid - Zero Mission Decomp

This is a work in progress decompilation of Metroid - Zero Mission.

2718/2721 functions decompiled (99.89%, 3 left)

0x76b014/0x76b014 bytes of data not in blobs (100%, 0 left)

Progress can be seen here: https://docs.google.com/spreadsheets/d/1X8XarD5evY8ZI7r_GQqh1pYmdVMbBcINYfRBUlogmKY/edit#gid=0

This repository can be used to build multiple ROMs. The ROMs are named like this: mzm_{region}.gba (or mzm_{region}_debug.gba)

Region indicates which region the ROM targets:

• us: USA, North America sha1: 5de8536afe1f0078ee6fe1089f890e8c7aa0a6e8
• eu: Europe sha1: 0fd107445a42e6f3a3e5ce8c865f412583179903
• jp: Japan sha1: 096f07685a3dc9286e71aa0b761f233b5efa2fcd
• cn: China (Not yet supported)
• us_beta: USA beta version sha1: 58986c4d6f2e5ccdc04936cc8b7c9d378570710c
• eu_beta: Europe beta version sha1: 3c0b7ccd303c30ac5c4ffc9fb0aa7137a533ad69

Debug simply indicates whether the ROM contains the debug features, it is optional.

The default built ROM is mzm_us.gba

Discords:

• https://discord.gg/2MGB9Xbr9y Metroidret
• https://discord.gg/WtekHKb MAGConst

Dependencies

• agbcc
• binutils-arm-none-eabi
• A baserom for each ROM desired to be built (i.e.mzm_us_baserom.gba if you wish to build mzm_us.gba).
• python3
• g++

Setup

• WINDOWS ONLY: Install and setup WSL

• Run sudo apt update just in case

• Install binutils-arm-none-eabi by running this command: sudo apt-get install binutils-arm-none-eabi

• Install git by running this command: sudo apt-get install git

• Install make by running this command: sudo apt-get install make

• Clone agbcc by running this command: git clone https://github.com/jiangzhengwenjz/agbcc

• Enter the agbcc folder (run cd agbcc) and build it (run ./build.sh)

• Add agbcc to your path (export PATH="<agbcc_path>:$PATH", where <agbcc_path> is the full path to the agbcc directory)

• Locate yourself in the decompilation root, and then build preproc (run cd tools/preproc && make)

Build

• Run make clean if necessary
  • Use make clean DATA=1 to remove data as well
• Run the data extractor if necessary: python3 tools/extractor.py
  • Use the -r flag to specify a region other than us (ex: -r jp)
  • Use the -d flag to extract only debug data from the US beta ROM (required for building a ROM with debug features)
• Run make (using the -j option is recommended to speed up the process)
• To build another version of the ROM you can do either of the following:
  • Specify it directly (ex: make us_debug for the US ROM with debug features)
  • Specify the flags, REGION (takes the region name, defaults to us) and DEBUG (takes 0 or 1, defaults to 0)
• Optionally, you can combine the commands to make it easier: python3 tools/extractor.py && make -j

Contributing

See CONTRIBUTING.md