[PTX] crt0

[Nathan Sidwell]

On 05/25/16 11:49, Alexander Monakov wrote:
> On Wed, 25 May 2016, Nathan Sidwell wrote:

> With today's trunk and newlib, if I run
>
>
> unresolved symbol __exitval_ptr

Is should work now, just pushed a patch to newlib.  PTX appears to accept 
'.extern .weak ...', but that has the same semantics as '.extern ...', which 
IMHO is a bug.  '.extern .weak' doesn't mean anything special.   Working on a 
GCC patch to stop us emitting it.



> It is possible, but it seems it's enough to set up soft stacks under #ifdef
> __nvptx_softstack__ in __main. Is that fine?

That's fine -- I'd forgotten there was a  #define to check.  The whole point of 
reimplementing crt0 in C was to make that kind of thing easier!

nathan