On Monday 20 July 2015 07:42 PM, Alexey Brodkin wrote: > From: Claudiu Zissulescu <[email protected]> > > Existing version of memset() relies on existence of 64-bit load/stores. > While ARC HS38 may not have those instructions implemented in SoC. > > Proposed implementation checks if "-mno-ll64" option was passed to gcc > (for ARCv2 "-mll64" is set implicitly by default) by checking __LL64__ > definition and if it is not defined uses 32-bit load/stores. > > Signed-off-by: Claudiu Zissulescu <[email protected]> > Signed-off-by: Alexey Brodkin <[email protected]> > Cc: Vineet Gupta <[email protected]>
Ping ! Could this patch be applied please ! Thx, -Vineet > --- > libc/string/arc/arcv2/memset.S | 30 ++++++++++++++++++++++++++++++ > 1 file changed, 30 insertions(+) > > diff --git a/libc/string/arc/arcv2/memset.S b/libc/string/arc/arcv2/memset.S > index d076ad1..0918d37 100644 > --- a/libc/string/arc/arcv2/memset.S > +++ b/libc/string/arc/arcv2/memset.S > @@ -52,6 +52,7 @@ ENTRY(memset) > lpnz @.Lset64bytes > ;; LOOP START > PREWRITE(r3, 64) ;Prefetch the next write location > +#ifdef __LL64__ > std.ab r4, [r3, 8] > std.ab r4, [r3, 8] > std.ab r4, [r3, 8] > @@ -60,16 +61,45 @@ ENTRY(memset) > std.ab r4, [r3, 8] > std.ab r4, [r3, 8] > std.ab r4, [r3, 8] > +#else > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > +#endif > .Lset64bytes: > > lsr.f lp_count, r2, 5 ;Last remaining max 124 bytes > lpnz .Lset32bytes > ;; LOOP START > prefetchw [r3, 32] ;Prefetch the next write location > +#ifdef __LL64__ > std.ab r4, [r3, 8] > std.ab r4, [r3, 8] > std.ab r4, [r3, 8] > std.ab r4, [r3, 8] > +#else > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > + st.ab r4, [r3, 4] > +#endif > .Lset32bytes: > > and.f lp_count, r2, 0x1F ;Last remaining 31 bytes > _______________________________________________ uClibc mailing list [email protected] http://lists.busybox.net/mailman/listinfo/uclibc
