Linker Command File

Hi.

I am trying to allocate a certain array used by my program in external memory. My LCF file looke like this:

Code:

---

MEMORY
{
/* vecs + L2SRAM + CIO + STACK = size of internal memory */
    vecs:  o = 0x00000000,  l = 0x00000200, fill = 0
        L2SRAM: o = 0x00000200,          l = 0x000F98E0 /*1 MB of L2SRAM (minus vecs, cio sections)*/
        CIO:        o = 0x000F9EE0,          l = 0x00000120 /*esbn: I try this to avoid message "Invalid CIO command (5)"*/
        STACK:  o = 0x000FF000,          l = 0x00000400
                /*L2SRAM + STACK + CIO + vecs = 0xFA000 = 1024 kB*/
        EXT_MEM: o = 0x80000000,  l = 0x000F0000 /*I allocate 983 kB externally to read in DWTinput.*/
}

SECTIONS
{
    "vectors"  >      vecs
        .my_bufs        >                L2SRAM            .cinit      >      L2SRAM
    .text      >      L2SRAM
        .stack                >      STACK
    .bss        >      L2SRAM
    .const      >      L2SRAM
    .data                  >      L2SRAM
        "DataMatrix"
        {
        getdata.obj(.far)
        }          >      EXT_MEM
    .far        >      L2SRAM
    .switch    >      L2SRAM
    .sysmem    >      L2SRAM
    .tables    >      L2SRAM
    .cio        >      CIO
}

---

As far as I can understand I should now have the far-section of the getdata-file in EXT_MEM, but I get the following error message:

>> esbnLCF.cmd: error: system error, can't open file 'getdata.obj' for input: No such file or directory

I have checked my .map file to make sure that part of getdata.obj really is placed in the .far section.

What can I do to allocate my array in EXT_MEM?

Thank you.

Esben.

> As far as I can understand I should now have the far-section of the getdata-file in EXT_MEM
Did you use any pragma's / attributes in the source code to indicate that you want this array in a new section?
Also, which tools are you using, this is very specific stuff.

> >> esbnLCF.cmd: error: system error, can't open file 'getdata.obj' for input: No such file or directory
Is it in a library?
Is it on the search path?
As an experiment, does the absolute path to the file work?
What about *getdata.obj(.far)

Salem>
I havnt made any specifications in the source code about my memory design. It's all in the LCF file above. I am using TI.s Code Composer Studio 3.1 to develop my project.

I declared DataMatrix[] as a static global variable to make it "visible" in the map file. Therefore I know it was placed in the far section. But I wish to move it into the EXT_MEM, a section I have defined as external memory.


>Is it in a library?
No, its an ordinary source file in my program.

>Is it on the search path?
>As an experiment, does the absolute path to the file work?
What is the search path and the absolute path?

Absolute path would be
/path/to/getdata.obj(.far)

You could just use in the source code
#pragma DATA_SECTION(DataMatrix, ".extMatrix");

And the LCF would just be
.extMatrix > EXT_MEM