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Compiler/TMS320F28335: Global symbol size in the map file?

Giles Robnson
Expert 1495 points
Part Number: TMS320F28335

Tool/software: TI C/C++ Compiler

Is there any way to get the size of global symbols output in the map file?  It lists all by address, so I can calculate a max possible size (ignoring holes), but it would be nice to be able to just read it.

I am using CL2000 version 6.1.0 (old I know, possibly I could use a later one), with --mapfile_contents=all (so it looks like all data is already being output).  Is there another option that will add more information?  I haven't found one.

Regards

  • 0
    TI__Guru**** 243850 points

    Giles Robnson said:
    Is there any way to get the size of global symbols output in the map file?

    Unfortunately, no.  Considering other solutions, again, I am sorry to say no.

    One partial solution to consider is the utility global_types_gen in the cg_xml package.  It shows you the layout of all the structures in your code.  Note it does not show the address of any specific structure, just the layout of the members in each structure type.

    Thanks and regards,

    -George

  • 0 in reply to George Mock
    Expert 1495 points
    A pity, but I thought not.
    However, I have written some VBA to extract the symbols (global & local - both needed I find) in RAM to a spreadsheet, sort by address, and calc differences. This gives upper bounds to the symbol size. It still needs some work, but is useful - I found I had forgot a "const", so a large data table was filling RAM instead of flash.
    Thanks for the swift reply.
  • 0 in reply to Giles Robnson
    TI__Guru**** 243850 points

    It sounds like that solution is working for you.  For others who are reading this thread, I have a suggestion to consider.

    Instead of reading the symbol table out of the linker map file, use the names utility nm2000 to extract the symbols directly from the executable (usually .out) file.  The names utility is documented in the C2000 assembly tools manual.  Capture symbol information in a text file, then open that file with Excel, or some other spreadsheet program.

    Thanks and regards,

    -George