Commit 8399a74f authored Jun 28, 2009 by Jie Zhang Committed by Mike Frysinger Jul 16, 2009

Blackfin: fix miscompilation in lshrdi3

The code used in the Blackfin lshrdi3 utilizes gcc constructs.  However,
the structures declared don't line up with the code gcc generates, so
under certain optimizations, we get bad code and things crap out in fun
random ways.  So rather than trying to maintain different gcc definitions
ourselves, just use the ones available in gcclib.h.

URL: http://blackfin.uclinux.org/gf/tracker/5286


Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

parent dc437b1b

arch/blackfin/lib/lshrdi3.c

+1 −15

Original line number	Diff line number	Diff line
		@@ -27,21 +27,7 @@
		* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
		*/

		#define BITS_PER_UNIT 8

		typedef int SItype __attribute__ ((mode(SI)));
		typedef unsigned int USItype __attribute__ ((mode(SI)));
		typedef int DItype __attribute__ ((mode(DI)));
		typedef int word_type __attribute__ ((mode(__word__)));

		struct DIstruct {
		SItype high, low;
		};

		typedef union {
		struct DIstruct s;
		DItype ll;
		} DIunion;
		#include "gcclib.h"

		#ifdef CONFIG_ARITHMETIC_OPS_L1
		DItype __lshrdi3(DItype u, word_type b)__attribute__((l1_text));

Admin message