From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1Sj8eq-0007ip-Qo for barebox@lists.infradead.org; Mon, 25 Jun 2012 12:44:51 +0000 From: Sascha Hauer Date: Mon, 25 Jun 2012 14:44:37 +0200 Message-Id: <1340628281-8774-2-git-send-email-s.hauer@pengutronix.de> In-Reply-To: <1340628281-8774-1-git-send-email-s.hauer@pengutronix.de> References: <1340628281-8774-1-git-send-email-s.hauer@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 1/5] blackfin: add __ashrdi3 To: barebox@lists.infradead.org Signed-off-by: Sascha Hauer --- arch/blackfin/lib/Makefile | 1 + arch/blackfin/lib/ashrdi3.c | 36 ++++++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) create mode 100644 arch/blackfin/lib/ashrdi3.c diff --git a/arch/blackfin/lib/Makefile b/arch/blackfin/lib/Makefile index 2f77318..cefb4dc 100644 --- a/arch/blackfin/lib/Makefile +++ b/arch/blackfin/lib/Makefile @@ -8,6 +8,7 @@ obj-y += smulsi3_highpart.o obj-y += umodsi3.o obj-y += lshrdi3.o obj-y += ashldi3.o +obj-y += ashrdi3.o obj-y += divsi3.o obj-y += modsi3.o obj-y += cpu.o diff --git a/arch/blackfin/lib/ashrdi3.c b/arch/blackfin/lib/ashrdi3.c new file mode 100644 index 0000000..b5b351e --- /dev/null +++ b/arch/blackfin/lib/ashrdi3.c @@ -0,0 +1,36 @@ +/* + * Copyright 2004-2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include "gcclib.h" + +#ifdef CONFIG_ARITHMETIC_OPS_L1 +DItype __ashrdi3(DItype u, word_type b)__attribute__((l1_text)); +#endif + +DItype __ashrdi3(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.high = 1..1 or 0..0 */ + w.s.high = uu.s.high >> (sizeof(SItype) * BITS_PER_UNIT - 1); + w.s.low = uu.s.high >> -bm; + } else { + USItype carries = (USItype) uu.s.high << bm; + w.s.high = uu.s.high >> b; + w.s.low = ((USItype) uu.s.low >> b) | carries; + } + + return w.ll; +} -- 1.7.10 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox