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x86-64 large data sections updated

H. J. Lu hjl@lucon.org
Wed Jun 15 23:40:00 GMT 2005 
On Wed, Jun 15, 2005 at 03:34:58PM -0400, Ian Lance Taylor wrote:
> Richard Henderson <rth@redhat.com> writes:
> 
> > > OK, so dropping here the lcommon test sounds sane?
> > 
> > The entire function is not sane.  The .largecomm assembler directive
> > should set the section to SHN_X86_64_LARGE_COMMON, and that should be
> > the end of it.  Once COMMON symbols get mapped into .lcommon/.lbss
> > sections, they don't return.
> 
> There is no interface for gas to set the ELF section of a symbol,
> except to set the symbol of the BFD symbol to some BFD section.  So
> unless we introduce such an interface, the only way to do this is to
> use a magic BFD section, which then gets translated into the
> appropriate ELF section code.  That is how the MIPS backend handles
> SHN_MIPS_SCOMMON--gas puts the symbol in ".scommon" and
> _bfd_mips_elf_section_from_bfd_section translates ".scommon" into
> SHN_MIPS_SCOMMON.  That seems to be what Jan is emulating in his code.

Do you have a MIPS assembly example to put a symbol in
SHN_MIPS_SCOMMON?


H.J.
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