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Classification: |
C++ |
Category: |
Base |
Created: |
11/11/99 |
Modified: |
12/11/2001 |
Number: |
FAQ-0431 |
Platform: |
ER5 |
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Question: I need to patch a function - let's say it's RFile::Open(). However each new ROM build has a different address for the function.
What can I do about it?
Answer: There is an algorithmic method for finding the address of RFile::Open on any ROM.
The export RFile::Open() has a constant Ordinal in EFSRV.DLL (105), so if you scan the Rom Directory structure for EFSRV.DLL
you can get the TRomImageHeader for this Dll. The TRomImageHeader contains a pointer to the export directory, and the 105th entry is the address of RFile::Open.
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