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ghidra_STM8

Ghidra STM8 processor module

Installation

Easy way

just copy files to $(GHIDRA_HOME)\Ghidra\Extensions\

Long way

In this case you also build an analyzer plugin that automatically assigns the proper calling convention. This is very useful for big binaries.

  • run # GHIDRA_INSTALL_DIR=$(full path to ghidra installation) gradle
  • open Ghidra
  • in the project selection window click File -> Install Extension
  • select lib/ghidra_STM8.jar that was built by gradle

Notes

STM8 uses two kinds of pointers: standard 16-bit, that can deal with RAM, I/O area and the bottom of Flash and 'far' 24-bit pointers that can address all memory.

In Ghidra far pointers can be declared as byte *24, my_struct *24, etc.

Functions that called by CALLF should be declared as __farcall. Standard ones, that called by CALL, should be declared as __stdcall (default behavior).

If the flash image is larger than 32 kbytes, use STM8:BE:24 language, otherwise either option can be used (but STM8:BE:16 gives clearer output).