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[MIPS] Add __ucmpdi2 implementation

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Recent GCC SVN versions may generate calls to __ucmpdi2.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Thiemo Seufer 2007-05-01 19:14:16 +01:00 committed by Ralf Baechle
parent 774583f8bc
commit df6b106bf0
2 changed files with 20 additions and 1 deletions
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2
arch/mips/lib/Makefile
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@ -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

19
arch/mips/lib/ucmpdi2.c Normal file
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@ -0,0 +1,19 @@
#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;
}