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Identify Storage of String Literals in Mapfile

Andrew Neil

Is it possible to identify the storage of String Literals from the mapfile?

I asume they will be in the ?CO? segment for the module?
eg,

void func( void )
{
   code unsigned int NumConst = 1;

   printf( "NumConst = %u", NumConst );
}

Will both the integer constant NumConst and the string literal "NumConst = %u" be stored in the same ?CO? segment, or will they be listed separately in the map?

Parents
  • 0 in reply to Andrew Neil

    The segment is the same, code segment ( ?CO? ) but, the variable NumCast is only in the symbol table. If you analyze the ?CO? segment, you will see everything that is declared in the code segment toguether with the literal strings.

    The ?CO?your_source_file_name is the Room size of all your string literal. ( strings used by printf, puts and so on )


Reply
  • 0 in reply to Andrew Neil

    The segment is the same, code segment ( ?CO? ) but, the variable NumCast is only in the symbol table. If you analyze the ?CO? segment, you will see everything that is declared in the code segment toguether with the literal strings.

    The ?CO?your_source_file_name is the Room size of all your string literal. ( strings used by printf, puts and so on )


Children
  • 0 in reply to Alex Ruiz

    The ?CO?your_source_file_name is the Room size of all your string literal.

    Not quite sure what you mean by, "Room size?"

    I think you are using L251, which might give more details, but with BL51 I can't see any way to tell from the mapfile how much of the ?CO?your_source_file_name segment is occupied by String Literals, and how much by "real" constants.

    Basically I need to cut down my code size, and I think that String Literals are a prime target; therefore, I need some easy way to confirm just how much code is being used by String Literals (rather than "real" constants, which must be retained).

  • 0 in reply to Andrew Neil

    Hummmm... unfortunately the ?CO?your_file_source_name is showing your literals and other "real" constants, I could not find a way to see only the literals.

    When I add another code variable to the source file, the length of ?CO?xxx increase.

    Yes, I was using L251 ( FF0000h ).