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Commit df6b106b authored by Thiemo Seufer's avatar Thiemo Seufer Committed by Ralf Baechle
Browse files

[MIPS] Add __ucmpdi2 implementation 



Recent GCC SVN versions may generate calls to __ucmpdi2.

Signed-off-by: default avatarThiemo Seufer <ths@networkno.de>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 774583f8

arch/mips/lib/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -9,4 +9,4 @@ obj-y += iomap.o 
obj-$(CONFIG_PCI)	+= iomap-pci.o



# libgcc-style stuff needed in the kernel

lib-y += ashldi3.o ashrdi3.o lshrdi3.o
 
lib-y += ashldi3.o ashrdi3.o lshrdi3.o ucmpdi2.o

arch/mips/lib/ucmpdi2.c

0 → 100644
+19 −0
Original line number Diff line number Diff line 
#include <linux/module.h>



#include "libgcc.h"



word_type __ucmpdi2 (unsigned long a, unsigned long b)

{

	const DWunion au = {.ll = a};

	const DWunion bu = {.ll = b};



	if ((unsigned int) au.s.high < (unsigned int) bu.s.high)

		return 0;

	else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)

		return 2;

	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)

		return 0;

	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)

		return 2;

	return 1;

}