Hi,

there is now a regression for watchpoints created before the inferior is
started.  With no active target the only target in the stack is `exec' which
has no `to_can_use_hw_breakpoint' in its vector.  Therefore only a software
watchpoint gets created.  Later the watchpoint type remains the same (software
one).

I find incorrect to determine the watchpoint type (sw/hw) the time it gets
created when no target is active.  GDB cannot know the hw watchpoints support
availability that time.

In some ideal case bp_watchpoint vs. bp_hardware_watchpoint should be
completely hidden from the user.  But as the watchpoint type is not absolutely
transparent I chose a more conservative way to just convert
bp_watchpoint<->bp_hardware_watchpoint appropriately when the relevant runtime
conditions may change.

The regression for ia64 got introduced starting with 6.7:
http://sourceware.org/ml/gdb-patches/2007-03/msg00290.html
http://sourceware.org/ml/gdb-cvs/2007-03/msg00114.html

The regression for i386/x86_64 got introduced only in post-6.8 CVS HEAD:
http://sourceware.org/ml/gdb-patches/2008-03/msg00000.html
http://sourceware.org/ml/gdb-cvs/2008-03/msg00002.html

No regressions on {x86_64,ia64}-unknown-linux-gnu.


Regards,
Jan