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Re: PATCH: ld/1467: Orphaned section is put in the odd place


On Wed, Oct 12, 2005 at 07:09:24PM +0100, Nick Clifton wrote:
> Hi H. J.
> 
> >The old section order is
> >  [ 1] .text             PROGBITS         0000000000000000  00100000
> >  [ 2] .data             PROGBITS         0000000000000004  00100004
> >  [ 3] .note             NOTE             0000000000000008  00100008
> >  [ 4] .notbad           PROGBITS         000000000000000c  0010000c
> >  [ 5] .note.bar         NOTE             0000000000000010  00100010
> 
> Why is this a problem ?

The question is which one is more reasonable,

  [ 1] .text             PROGBITS         0000000000000000  00100000
       0000000000000004  0000000000000000  AX       0     0     4
  [ 2] .data             PROGBITS         0000000000000004  00100004
       0000000000000004  0000000000000000  WA       0     0     4
  [ 3] .note             NOTE             0000000000000008  00100008
       0000000000000004  0000000000000000   A       0     0     1
  [ 4] .notbad           PROGBITS         000000000000000c  0010000c
       0000000000000004  0000000000000000   A       0     0     1
  [ 5] .note.bar         NOTE             0000000000000010  00100010
       0000000000000004  0000000000000000   A       0     0     1

or

  [ 1] .text             PROGBITS         0000000000000000  00100000
       0000000000000004  0000000000000000  AX       0     0     4
  [ 2] .notbad           PROGBITS         0000000000000004  00100004
       0000000000000004  0000000000000000   A       0     0     1
  [ 3] .data             PROGBITS         0000000000000008  00100008
       0000000000000004  0000000000000000  WA       0     0     4
  [ 4] .note             NOTE             000000000000000c  0010000c
       0000000000000004  0000000000000000   A       0     0     1
  [ 5] .note.bar         NOTE             0000000000000010  00100010
       0000000000000004  0000000000000000   A       0     0     1

When I repalce .notbad with .readonlydata, the old linker gives me

  [ 1] .text             PROGBITS         0000000000000000  00100000
       0000000000000004  0000000000000000  AX       0     0     4
  [ 2] .data             PROGBITS         0000000000000004  00100004
       0000000000000004  0000000000000000  WA       0     0     4
  [ 3] .note             NOTE             0000000000000008  00100008
       0000000000000004  0000000000000000   A       0     0     1
  [ 4] .readonlydata     PROGBITS         000000000000000c  0010000c
       0000000000000004  0000000000000000   A       0     0     1
  [ 5] .note.bar         NOTE             0000000000000010  00100010
       0000000000000004  0000000000000000   A       0     0     1

Are you saying it is better than the new linker

  [ 1] .text             PROGBITS         0000000000000000  00100000
       0000000000000004  0000000000000000  AX       0     0     4
  [ 2] .readonlydata     PROGBITS         0000000000000004  00100004
       0000000000000004  0000000000000000   A       0     0     1
  [ 3] .data             PROGBITS         0000000000000008  00100008
       0000000000000004  0000000000000000  WA       0     0     4
  [ 4] .note             NOTE             000000000000000c  0010000c
       0000000000000004  0000000000000000   A       0     0     1
  [ 5] .note.bar         NOTE             0000000000000010  00100010

> 
> Why should the user expect any kind of ordering for orphaned sections ? 
>  If they did not care enough about the sections to place them in their 
> linker script, why should they complain about how or where the linker 
> chooses to place them ?
> What if the user wants this kind of alphabetic ordering ?  Will your 
> patch allow it ?

We are talking about orphaned sections here. User isn't clear where
they should go.


H.J.


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