Package ghidra.program.util

Class LanguagePostUpgradeInstructionHandler

java.lang.Object
ghidra.program.util.LanguagePostUpgradeInstructionHandler
public abstract class LanguagePostUpgradeInstructionHandler extends Object
LanguagePostUpgradeInstructionHandler provides an abstract implementation of a post language-upgrade instruction modification handler. The Simple Language Translator facilitates the specification of such a handler implementation within a language translator specification file using the post_upgrade_handler element. Following a major-version language upgrade, the last translator invoked is given an opportunity to perform additional instruction modifications on the entire program.

  • Field Details

    • program

      protected final Program program

  • Constructor Details

    • LanguagePostUpgradeInstructionHandler

      public LanguagePostUpgradeInstructionHandler(Program program)
      Constructor
      Parameters:
      program -

  • Method Details

    • getDisassembler

      protected Disassembler getDisassembler()
      Get disassembler for the current program
      Returns:
      disassembler instance

    • fixupInstructions

      public abstract void fixupInstructions(Language oldLanguage, TaskMonitor monitor) throws CancelledException
      Invoked after Program language upgrade has completed. Implementation of this method permits the final re-disassembled program to be examined/modified to address more complex language upgrades. This method will only be invoked on the latest translator, which means all complex multi-version post-upgrade concerns must factor in the complete language transition. The program's language information will still reflect the original pre-upgrade state, and if the program is undergoing a schema version upgrade as well, certain complex upgrades may not have been completed (e.g., Function and Variable changes). Program modifications should be restricted to instruction and instruction context changes only.
      Parameters:
      oldLanguage - the oldest language involved in the current upgrade translation (this is passed since this is the only fixup invocation which must handle the any relevant fixup complexities when transitioning from the specified oldLanguage).
      monitor - task monitor
      Throws:
      CancelledException - if upgrade cancelled

    • modifySingleInstructionContext

      protected void modifySingleInstructionContext(Address addr, RegisterValue contextValue, boolean mergeContext)
      Repair the context and re-disassemble the instruction at the specified address.
      Parameters:
      addr - instruction address
      contextValue - new context value
      mergeContext - if true, the specified context value will be merged with the existing context at the specified address, otherwise the existing value will be replaced.