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PADDING execution regions

Vijaya Kumar
Note: This was originally posted on 24th February 2010 at http://forums.arm.com

Dear All,

   I am looking for RVDS 2.2 arm linker option where I can pad the execution region with 0xFF's so that the size of the execution region is aligned to 4KB.

I have tried to use

EXEC 0x2000 PADVALUE 0xFFFFFFFFFF 0x1000
{
  x.ptl(RO);
}

But the unused EXEC region is not padded with 0xFF's in the output image.
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  • Arm Employee Badge
    Note: This was originally posted on 25th February 2010 at http://forums.arm.com

    You will need to specify the --no_legacyalign option on the armlink command line. By default the linker assumes it can use 4 bytes alignment without padding, and then "unpack" the binary when running it for the first time. For demand paging this is obviously not what you want.
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  • Arm Employee Badge
    Note: This was originally posted on 25th February 2010 at http://forums.arm.com

    You will need to specify the --no_legacyalign option on the armlink command line. By default the linker assumes it can use 4 bytes alignment without padding, and then "unpack" the binary when running it for the first time. For demand paging this is obviously not what you want.
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