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microblaze: Add __cmpdi2

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Some new kernel configurations require __cmpdi2 function.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2011-11-29 13:05:30 +01:00
parent ed705633d3
commit eecb20720f
2 changed files with 27 additions and 0 deletions
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1
arch/microblaze/lib/Makefile
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@ -20,6 +20,7 @@ lib-y += uaccess_old.o
lib-y += ashldi3.o lib-y += ashldi3.o
lib-y += ashrdi3.o lib-y += ashrdi3.o
lib-y += cmpdi2.o
lib-y += divsi3.o lib-y += divsi3.o
lib-y += lshrdi3.o lib-y += lshrdi3.o
lib-y += modsi3.o lib-y += modsi3.o

26
arch/microblaze/lib/cmpdi2.c Normal file
View file

@ -0,0 +1,26 @@
#include <linux/module.h>
#include "libgcc.h"
word_type __cmpdi2(long long a, long long b)
{
const DWunion au = {
.ll = a
};
const DWunion bu = {
.ll = b
};
if (au.s.high < bu.s.high)
return 0;
else if (au.s.high > 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;
}
EXPORT_SYMBOL(__cmpdi2);