Question

I used GCC and need to define big array of text, like

const char* myArray[1000] = {"red", "blue", "green", "yellow", ...};

I have a array of pointers and big heap of text like "red\0blue\0green\0..." somewere in memory. I want to change memory region for that text. I used __attribute__((section(...))) GCC directive, but they change only allocation of pointers. How can i change allocation of big text chunk? Thanks for answers.

P.S. Sorry for bad English.

Answer 1

You can use -fdata-sections with gcc. That will create a unique section for each global variable in the object-file.

Then you can create a LdScript-file which will tell the linker (ld) to put the sections into the desired memory region.

Anonymous strings are in the .rodata-section of the object-file. An LdScript-example snippet:

.memregion1.rodata :
{ 
    Startup.c.obj(.rodata.str1.8)
}

will put the str1.8 from Startup.c into the memregion1.