[parisc-linux] unaligned access using bash on glibc 2.5

[John David Anglin]

> > This is a bug in __attribute__ ((tls_model ("initial-exec"))).  It
> > doesn't express that it uses r19.  As a result, GCC is free to optimize
> > the save and restore of r19 across the call to free away.
> > 
> > The same is true of the asm.
> 
> What would be the correct way to express that?

As far as the tls_model attribute goes, I can see that the TLS patterns
in pa.md (e.g., tgd_load) don't express their dependence on r19 and r27.
I think the simplest fix is to use expanders and separate patterns for
pic and non-pic.  This will allow different rtl for the two cases.

Asms that use the pic register need to express that dependence in their
list of input operands.

Dave
-- 
J. David Anglin                                  dave.anglin at nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)