portable alternative to #pragma DATA_SECTION and CODE_SECTION

StephanS

Hi all,

is there an alternative to the #pragma DATA_SECTION and CODE_SECTION?

These are very handy for allocating single variables and functions to special memory sections, but highly non-portable.

I guess there is actually no alternative, but is TI thinking about an alternative that is more portable - and can be enabled or disabled at one centralized place via #ifdef instead of #ifdefs around each #pragma?

over 16 years ago

0 StephanS over 16 years ago

Genius 4087 points

Okay, I finally found a portable alternative here http://tiexpressdsp.com/index.php/Pragmas_in_C%2B%2B and especially here http://tiexpressdsp.com/index.php/Pragmas_You_Can_Understand.

It is done via _Pragma which was introduced in C99 and is supported in many TI compilers.

Hopefully this is also supported on the compiler that you want to port to...

I implemented the portable pragma as follows:

#ifdef __TMS320C2000__
// TI C2000 compiler knows the pragmas
#define PRAGMA(x) _Pragma(#x)
#define VAR_IN_SECTION(var, section) PRAGMA(DATA_SECTION(var, section))
#else
// for any other compiler, the pragmas are ignored
#define VAR_IN_SECTION(var, section)
#endif

Instead of

#pragma DATA_SECTION(myvar,".bss")

You write portable:

VAR_IN_SECTION(myvar,".bss")

C2000™︎ microcontrollers

C2000 microcontrollers forum

portable alternative to #pragma DATA_SECTION and CODE_SECTION