On Tue, Dec 29, 2020 at 12:47 AM Kazi Alom <alomk@xxxxxxx> wrote: > Hi, > > I am trying to get labels for what is code and what is data in the .text > section of an ELF file. The dwarfinfo gives low and high addresses for all > functions but those bounds include data pointers as well (looking at ARM > binaries). Is there a way to just get the addresses for code? Or in other > words, how can I begin to instrument the compiler to somehow output bounds > on only code? > ARM binaries have mapping symbols that mark the boundaries between code and data. This is documented in the ARM ABI and is arm specific. Looks like they are $a. for ARM code, $t. for thumb code, and $d. for data. I suggest checking the ARM ABI docs. You should be able to use these symbols to distinguish between code and data. I think the objdump disassembler uses them for instance. This is a problem on ARM because you can have a constant pool in the middle of a function. Most other major targets don't do that, and hence don't have this problem. Jim
