#pragma DATA_SECTION on string literal

one and zero

Mastermind 18146 points

Hi Champs,

is there a method to control the memory location of a string literal inside c++?

Example:

#pragma DATA_SECTION(".stringSection")

const char* string = "this string should be placed in .stringSection";

Only the pointer of the string goes into the.stringSection using the #pragma DATA_SECTION.

Is there a way to control the placement of the string as well in today's CGT's?

The only 2 workarounds I found are:

1. Steering the placement in the linker command file ( .const:.string > SpecialMemmoryArea) which has the limitation that control is only on file level.

2. Use arrays instead.

Kind regards,

one and zero

over 13 years ago

0 one and zero over 13 years ago

TI__Mastermind 18146 points

... forgot to mention this is C6000 CGT 7.3.5 ... but I guess this applies to other architectures as well ...

0 AartiG over 13 years ago

TI__Guru**** 173310 points

I can't think of another workaround other than what you 've already listed, but maybe others looking at this forum will have additional input.

0 Douglas Gwyn over 13 years ago

Expert 2210 points

Yes, since string literals have no names, there isn't much you can control about them. The compiler puts them all into the .const section.

When using what *looks* like a string literal to initialize an array of type char, it is a different animal (an initializer) and not actually a string literal. The effect is much the same, since when using the pointer-to-first-member-of-literal approach you really don't want to change the contents of the pointer anyway (you would lose the only link to the literal object).

One wonders why you want to change the section..

0 one and zero over 13 years ago in reply to Douglas Gwyn

TI__Mastermind 18146 points

i was just looking for alternative ways on how to influence the placement of the "text" in memory ....

Thanks for you answers,

one and zero

0 hemanth jv over 11 years ago in reply to one and zero

Prodigy 40 points

Could anyone tell me: How to add the linker script in the visual studio C++ ??

0 George Mock over 11 years ago in reply to hemanth jv

TI__Guru**** 249860 points

hemanth jv said:
How to add the linker script in the visual studio C++ ??

When you a start a new project in Code Composer Studio, the linker command file is supplied for you. The choice is made based on the target processor you use. The presentations on the compiler tips and tricks page briefly touches on this topic.

Thanks and regards,

-George

Code Composer Studio™︎

Code Composer Studio forum

#pragma DATA_SECTION on string literal