https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81690
Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-30
CC| |tschwinge at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Per PTX 3.1, "Table 141. Special Registers: %clock", "Special register %clock
is an unsigned 32-bit read-only cycle counter that wraps silently", which
possibly could be used to implemented "usleep" (in newlib)? For that, we'd
first have to figure out what a "cycle" is. Quite possibly, this will be
different per hardware architecture, so would need some newlib/libgcc startup
code. Possibly it might also depend on the actual clock speed at run time,
which would make this more/too much convoluted, if at all practical?
(Best to avoid such "sleep" function usage, of course.) ;-)
