Ghidra SPC970 processor module

This extension adds Sony SPC970 support to Ghidra, and MechaCon firmware dump loader.

Compatibility

The extension builds and loads with Ghidra 12.1.3. Ghidra extensions are release-specific, so build a new archive against each Ghidra version you intend to use.

Ghidra 12.1.3 requires JDK 21 or later and Gradle 8.5 or later. The Gradle wrapper shipped in a public Ghidra distribution can be used without installing Gradle separately.

Build

Set GHIDRA_INSTALL_DIR to the root of an unpacked Ghidra release, then invoke Gradle from this repository:

export GHIDRA_INSTALL_DIR=/absolute/path/to/ghidra_12.1.3_PUBLIC
"$GHIDRA_INSTALL_DIR/support/gradle/gradlew" -p . clean buildExtension

Install and use

In Ghidra, choose File > Install Extensions..., add the generated ZIP, enable SPC970, and restart Ghidra when prompted.

For a recognized 256 KiB MechaCon dump, choose Sony MechaCon ROM in the import dialog. The loader automatically:

• selects spc970:LE:16:default;
• maps the ROM at ram:FC0000
• maps SRAM ram:000000 -> ram:00FFFF;
• applies hardware, command, MG, and buffer symbols
• creates entry points

Mechacon analyzer discovers SCMD, NCMD, PMAP, and MG dispatch tables. It identifies known SFR helper routines and MG S-box data.

Development

data/buildLanguage.xml remains available for the GhidraDev/Eclipse workflow. GhidraDev generates the local .antProperties.xml file when the project is linked to a Ghidra installation; that machine-specific file is intentionally not tracked.