placing a group of functions to some section using .cfg file

Here is my post about how to place the memory at a certian address.

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/t/177186.aspx

I think if you create the section in the .cfg and then place a #pragma in your code around the function, it will be the same.

However, to make it read only - you will need to create a special platform in CCS (Using Tools->RTSC Tools->Platform->New) and create a memory section such as DDR3_RO or something and set the permissions, length and acceptable information type (code, data or both).  (Be sure to import the C66x default platform first, makes a good starting point.) Then in your config, you will reference your program section to this new memory section.

For example here I created a special platform for my program that had MSMCRAM_NDK where I placed all the buffers for NDk in seperate section of MSMCRAM.  You could do this for DDR3 starting at 0x92000000.

Program.sectMap[".myLocalMemory"] = "L2SRAM";

Program.sectMap[".myHeapSection"] = "DDR3";

Program.sectMap[".resmgr_memregion"] = {loadSegment: "L2SRAM", loadAlign:128}; /* QMSS descriptors region */

Program.sectMap[".resmgr_handles"] = {loadSegment: "L2SRAM", loadAlign:16}; /* CPPI/QMSS/PA Handles */

Program.sectMap[".resmgr_pa"] = {loadSegment: "L2SRAM", loadAlign:8}; /* PA Memory */

Program.sectMap[".far:NDK_OBJMEM"] = {loadSegment: "MSMCSRAM_NDK", loadAlign: 8};

Program.sectMap[".far:NDK_PACKETMEM"] = {loadSegment: "MSMCSRAM_NDK", loadAlign: 128};

Also, lesson learned from created a special platform.  When you uncheck the "customize memory" box you will need to also add the length of your L1D andL1P memory sections otherwise it won't link.  Not sure why the default one will work without the length but a customized one needs the lenghth.

Anyhow, TI please correct if I have misspoken.

Good luck!

Brandy

Thanks Brandy for the useful cues.

Please take a look at this post that describes how to put a group of functions into a section without having to put #pragma CODE_SECTION before each function. But the approach described works only for the linker command file (correct me if I am wrong).

http://e2e.ti.com/support/development_tools/compiler/f/343/t/41618.aspx

I want to put functions into a section without having to put #pragma before each function.

Tarun

Tarun,
can you post the linker directives that you would use in the linker command file, and I'll check if they can be replicated in the CFG script?

Thanks Sasha

Here are the directives I use in my linker command file

SECTIONS
{
    .mytext :
    {
        file1.obj(.text)      /* Link .text section from f1.obj */
        file2.obj(.text)      /* Link .text from f4.obj */
    }
}

One more thing, I made some memory sections in .cfg file using Program.sectMap() but these sections are not visible in my linker command file Is there a way I could access those section in my linker command file?

I mean could I do this in my .cfg file-

Program.sectMap[".mytext"] = new prog.SectionSpec();

Program.sectMap[".mytext"].loadSegment = 'DDR3'

Then in my linker command file I want to do this

SECTIONS
{
    .mytext :
    {
        file1.obj(.text)      /* Link .text section from f1.obj */
        file2.obj(.text)      /* Link .text from f4.obj */
    }
}

Is this possible?

Tarun

Thanks Sasha  for all the help.

Making a template worked although I had to give it an absolute path but am trying to figure out what went wrong with relative path.

Thanks

Tarun