RE: Preventing cross-gdb/insight download of specific sections?

[<mkelwood at qsicorp dot com>]

If you want to use /DISCARD/, you need an output section named /DISCARD/,
then put the input sections you want to exclude in there:
/DISCARD/ :
{
        *(.section1-to-exclude)
        *(.section2-to-exclude)
}

Looks like you are trying to stuff the output section .fpga into a memory
region named /DISCARD/. That won't do what you want.
With best regards,

MKE



> The easiest way is to use objcopy to strip off the sections you don't
> want.  Then download the stripped file, but load symbols from the
> original.
>
> --
> Richard Sewards
>
>
> -----Original Message-----
> From: Toralf Lund [mailto:toralf@procaptura.com]
> Sent: Tuesday, September 21, 2004 4:15 AM
> To: crossgcc
> Subject: Preventing cross-gdb/insight download of specific sections?
>
> Somewhat off-topic, but...
>
> Does anyone know how I can skip specific sections from the insight/gdb
> download to my board, or alternatively, leave them out from the binary
> file (without getting unresolved symbols)?
>
> The ld manual says
>
>    The special output section name `/DISCARD/' may be used to discard
>    input sections.  Any input sections which are assigned to an output
>    section named `/DISCARD/' are not included in the output file.
>
> So I tried
>  .fpga :
>  {
>    . += 1;
>    . = ALIGN(64K);    /* We may assume vector section <64K */
>    xc2*.o*(.data*)
>    . = ALIGN(64K);    /* Let (load addr of) next section be nicely
> aligned */
>  }  > flash AT > /DISCARD/
>
> and also just
>   } > /DISCARD/
> at the last line
>
> (.fpga is the section I wan to leave out) but got
>
> /usr/arm-coff/bin/ld: section .fpga [00000000 -> 0002ffff] overlaps
> section .dbgvect [00000000 -> 00000023]
>
> (where .dbgvect is a section starting at address 0 which I do wand.)
>
> Also, I tried assigning an address to /DISCARD/ (even though this
> didn't
>
> seem right), but then the linker would happily include it, and the
> debugger download it.
>
> Help, anyone?
>
> - Toralf
>
> ------
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