From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/blackfin/lib/ashldi3.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 arch/blackfin/lib/ashldi3.c (limited to 'arch/blackfin/lib/ashldi3.c') diff --git a/arch/blackfin/lib/ashldi3.c b/arch/blackfin/lib/ashldi3.c new file mode 100644 index 000000000..ab69d8768 --- /dev/null +++ b/arch/blackfin/lib/ashldi3.c @@ -0,0 +1,35 @@ +/* + * Copyright 2004-2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include "gcclib.h" + +#ifdef CONFIG_ARITHMETIC_OPS_L1 +DItype __ashldi3(DItype u, word_type b)__attribute__((l1_text)); +#endif + +DItype __ashldi3(DItype u, word_type b) +{ + DIunion w; + word_type bm; + DIunion uu; + + if (b == 0) + return u; + + uu.ll = u; + + bm = (sizeof(SItype) * BITS_PER_UNIT) - b; + if (bm <= 0) { + w.s.low = 0; + w.s.high = (USItype) uu.s.low << -bm; + } else { + USItype carries = (USItype) uu.s.low >> bm; + w.s.low = (USItype) uu.s.low << b; + w.s.high = ((USItype) uu.s.high << b) | carries; + } + + return w.ll; +} -- cgit v1.2.3-54-g00ecf