Package ghidra.app.plugin.exceptionhandlers.gcc.sections

Class EhFrameSection

java.lang.Object
ghidra.app.plugin.exceptionhandlers.gcc.sections.EhFrameSection
All Implemented Interfaces:
CieSource
public class EhFrameSection extends Object
Parses the call frame information exception handling structures within an '.eh_frame' memory section.

  • Field Details

  • Constructor Details

    • EhFrameSection

      public EhFrameSection(TaskMonitor monitor, Program program)
      Constructor for an eh frame section.
      Parameters:
      monitor - a status monitor for indicating progress or allowing a task to be cancelled.
      program - the program containing this eh frame section.

  • Method Details

    • getCie

      public Cie getCie(Address currAddress) throws MemoryAccessException, ExceptionHandlerFrameException
      Description copied from interface: CieSource
      For the provided address, return a Common Information Entry (CIE)
      Parameters:
      currAddress - the address with the CIE
      Returns:
      the Cie at currAddress
      Throws:
      MemoryAccessException - if memory for the CIE couldn't be read
      ExceptionHandlerFrameException - if a problem was encountered

    • analyze

      public List<RegionDescriptor> analyze(int fdeTableCount) throws MemoryAccessException, AddressOutOfBoundsException, ExceptionHandlerFrameException
      Analyzes and annotates the eh frame section.
      Parameters:
      fdeTableCount - the number of exception handler FDEs.
      Returns:
      the region descriptors for the eh frame section.
      Throws:
      MemoryAccessException - if memory couldn't be read/written while processing the eh frame.
      AddressOutOfBoundsException - if one or more expected addresses weren't in the program.
      ExceptionHandlerFrameException - if a problem was encountered determining eh frame data.

    • createAugmentationData

      protected void createAugmentationData(List<RegionDescriptor> regions, Cie cie)
      Creates data structures for the specified Common Information Entry (CIE) and its Frame Description Entries (FDEs) as indicated by the regions.
      Parameters:
      regions - the region descriptors for the FDEs.
      cie - the CIE for the FDEs.

    • createCie

      protected Cie createCie(Address curAddress, boolean isInDebugFrame) throws MemoryAccessException, ExceptionHandlerFrameException
      Creates the data for a common information entry (CIE) at the address and puts a label and comment on it.
      Parameters:
      curAddress - the address with the CIE
      isInDebugFrame - true indicates the frame containing this CIE is a debug frame.
      Returns:
      the Cie that was created
      Throws:
      MemoryAccessException - if memory for the CIE couldn't be read
      ExceptionHandlerFrameException - if a problem was encountered

    • getCieOrCreateIfMissing

      protected Cie getCieOrCreateIfMissing(Address curAddress, boolean isInDebugFrame) throws MemoryAccessException, ExceptionHandlerFrameException
      This class maintains a lookup of common information entry (CIE) objects; this retrieves an existing object (by address), and creates a new CIE if not found.
      Parameters:
      curAddress - the address with the CIE
      isInDebugFrame - true indicates the frame containing this CIE is a debug frame.
      Returns:
      the Cie that was either previously created, or a newly minted object.
      Throws:
      MemoryAccessException - if memory for the CIE couldn't be read
      ExceptionHandlerFrameException - if a problem was encountered

    • createCieLabel

      protected void createCieLabel(Address curAddress)
      Creates a label indicating there is an CIE at the address.
      Parameters:
      curAddress - the address with the CIE

    • createCieComment

      protected void createCieComment(Address curAddress)
      Creates a comment indicating there is an CIE at the address.
      Parameters:
      curAddress - the address with the CIE

    • createFdeComment

      protected void createFdeComment(Address curAddress)
      Creates a comment indicating there is an FDE at the address.
      Parameters:
      curAddress - the address with the FDE