Is it normal that ld promote a section size

Terry Guo flameroc@gmail.com
Mon Feb 23 12:52:00 GMT 2015


On Mon, Feb 23, 2015 at 3:17 PM, Alan Modra <amodra@gmail.com> wrote:
> On Mon, Feb 23, 2015 at 09:47:26AM +0800, Terry Guo wrote:
>> 0x800 by gas. I checked SUB_SEGMENT_ALIGN as you suggested, but
>> couldn't find more detailed information to help me understand this
>> issue. Do you know the background why gas has to promote the size to
>> its alignment? Thanks.
>
> What binutils target are you using?
>
> As far as I known, SUB_SEGMENT_ALIGN was needed for compatibility with
> older assemblers (AOUT and COFF), and also on ia64 to ensure that code
> sections are a multiple of the bundle size.  There may be other
> targets that have similar code section restrictions.
>
Thanks Alan. My target is arm-none-eabi and using ELF format for
object file. I will check ARM architecture documents to see if there
is such restrictions.

BR,
Terry



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