From 4e07dba7cb8c9c76a52d0e32b69f13bb583a9674 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Thu, 12 Aug 2010 14:28:53 +0200 Subject: microblaze: Add libgcc function directly to kernel Replaced libgcc functions with asm optimized implementation. Signed-off-by: Michal Simek --- arch/microblaze/lib/ashldi3.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 arch/microblaze/lib/ashldi3.c (limited to 'arch/microblaze/lib/ashldi3.c') diff --git a/arch/microblaze/lib/ashldi3.c b/arch/microblaze/lib/ashldi3.c new file mode 100644 index 000000000000..beb80f316095 --- /dev/null +++ b/arch/microblaze/lib/ashldi3.c @@ -0,0 +1,29 @@ +#include + +#include "libgcc.h" + +long long __ashldi3(long long u, word_type b) +{ + DWunion uu, w; + word_type bm; + + if (b == 0) + return u; + + uu.ll = u; + bm = 32 - b; + + if (bm <= 0) { + w.s.low = 0; + w.s.high = (unsigned int) uu.s.low << -bm; + } else { + const unsigned int carries = (unsigned int) uu.s.low >> bm; + + w.s.low = (unsigned int) uu.s.low << b; + w.s.high = ((unsigned int) uu.s.high << b) | carries; + } + + return w.ll; +} + +EXPORT_SYMBOL(__ashldi3); -- cgit v1.2.3