http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58067
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 30646
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30646&action=edit
gnu largepic TLS
An attempt to handle -mcmodel=large -fpic TLS GD/LD in the compiler.
Seems to work for me on testcase like:
__thread int a;
static __thread int b;
int
foo ()
{
return a++ + b++;
}
int
main ()
{
return foo () + foo () - 2;
}
but unfortunately ld will fail if this code is being attempted to link into an
executable or PIE:
/usr/bin/ld: /tmp/ccWao1Is.o: TLS transition from R_X86_64_TLSGD to
R_X86_64_GOTTPOFF against `a' at 0x26 in section `.text' failed
/tmp/ccWao1Is.o: could not read symbols: Bad value
collect2: error: ld returned 1 exit status
