[fpc-devel] How to get function start and end position in executable?

Jonas Maebe jonas.maebe at elis.ugent.be
Sun Jul 18 12:49:26 CEST 2010


On 16 Jul 2010, at 12:56, Ċ½ilvinas Ledas wrote:

> I want to implement kind of executable protection using "software guards" (*) - when function (caller) decrypts another function (callee) before calling it and encrypts it again after callee returns.
> As a result I need to get addresses of my functions (where the asm code starts and ends in the executable). Is there some way to export such info to external file while fpc compiles executable (or maybe afterwards to get this info from executable)?

After compiling you can run "nm -S progname" to get the symbol addresses in the first column and (where available) the symbol size in the second column.


Jonas




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