Commit d4d016ca authored by Linus Torvalds's avatar Linus Torvalds
Browse files

alpha: move __udiv_qrnnd library function to arch/alpha/lib/ 



We already had the implementation for __udiv_qrnnd (unsigned divide for
multi-precision arithmetic) as part of the alpha math emulation code.

But you can disable the math emulation code - even if you shouldn't -
and then the MPI code that actually wants this functionality (and is
needed by various crypto functions) will fail to build.

So move the extended-precision divide code to be a regular library
function, just like all the regular division code is.  That way ie is
available regardless of math-emulation.

Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ab41f75e

arch/alpha/include/asm/asm-prototypes.h

+1 −0
Original line number Diff line number Diff line
@@ -16,3 +16,4 @@ extern void __divlu(void); 
extern void __remlu(void);

extern void __divqu(void);

extern void __remqu(void);

extern unsigned long __udiv_qrnnd(unsigned long *, unsigned long, unsigned long , unsigned long);

arch/alpha/lib/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ ev6-$(CONFIG_ALPHA_EV6) := ev6- 
ev67-$(CONFIG_ALPHA_EV67) := ev67-



lib-y =	__divqu.o __remqu.o __divlu.o __remlu.o \

	udiv-qrnnd.o \

	udelay.o \

	$(ev6-y)memset.o \

	$(ev6-y)memcpy.o \

arch/alpha/math-emu/qrnnd.S→arch/alpha/lib/udiv-qrnnd.S

+2 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
 # along with GCC; see the file COPYING.  If not, write to the 

 # Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,

 # MA 02111-1307, USA.

#include <asm/export.h>



        .set noreorder

        .set noat
@@ -161,3 +162,4 @@ $Odd: 
	ret	$31,($26),1



	.end	__udiv_qrnnd

EXPORT_SYMBOL(__udiv_qrnnd)

arch/alpha/math-emu/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -7,4 +7,4 @@ ccflags-y := -w 


obj-$(CONFIG_MATHEMU) += math-emu.o



math-emu-objs := math.o qrnnd.o
 
math-emu-objs := math.o

arch/alpha/math-emu/math.c

+0 −2
Original line number Diff line number Diff line
@@ -403,5 +403,3 @@ alpha_fp_emul_imprecise (struct pt_regs *regs, unsigned long write_mask) 
egress:

	return si_code;

}
 


EXPORT_SYMBOL(__udiv_qrnnd);