Re: SEC_NEVER_LOAD cleanup

[Dave Korn <dave.korn.cygwin@gmail.com>]

On 26/10/2010 13:46, Alan Modra wrote:
> It seems we have irreconcilable differences between ELF and COFF in
> the treatment of NOLOAD.  How does the following look to you COFF
> people?

  Yes, please.  With that, HEAD now DTRT, by which I mean behaves the same as
2.20 and earlier: the created section has an address and CONTENTS:

>  10 .gnu_debuglink_overlay 00000010  6123a000  6123a000  00213a00  2**2
>                   CONTENTS, EXCLUDE

... whereas unpatched HEAD omits the contents:

>   9 .gnu_debuglink_overlay 00000010  61239000  61239000  00000000  2**2
>                   EXCLUDE

... which is not the desired outcome.

  I still have one discrepancy to tidy up, which is that running this command
on the generated DLL file:

> objcopy -g --add-gnu-debuglink=cygwin1.dbg cygwin0.dll

creates a section like so with 2.20:

>  12 .gnu_debuglink 00000010  61300000  61300000  00204600  2**2
>                   CONTENTS, READONLY

but creates a section like so:

>  12 .gnu_debuglink 00000010  61300000  61300000  00204c00  2**2
>                   CONTENTS, ALLOC, LOAD, READONLY, DATA

... with HEAD, either with or without your patch.  I imagine this is down to
the styp to/from section flags conversion in coffcode.h, I'm investigating
that now.

    cheers,
      DaveK