Tool to analyze size of ELF sections and symbol

c parsing gcc cross-compiling objdump
RushPL picture RushPL · Jul 30, 2012 · Viewed 39.6k times · Source

I need a way to analyze output file of my GCC compiler for ARM. I am compiling for bare metal and I am quite concerned with size. I can use arm-none-eabi-objdump provided by the cross-compiler but parsing the output is not something I would be eager to do if there exists a tool for this task. Do you know of such a tool existing? My search turned out no results.

One more thing, every function in my own code is in its own section.

Answer

ouah picture ouah · Jul 30, 2012

You can use nm and size to get the size of functions and ELF sections.

To get the size of the functions (and objects with static storage duration):

$ nm --print-size --size-sort --radix=d tst.o

The second column shows the size in decimal of function and objects.

To get the size of the sections:

$ size -A -d tst.o

The second column shows the size in decimal of the sections.

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