[MIPS] Add __cmpdi2

Certain 32-bit kernel configurations seem to be able to cause references,
this was observed with gcc 4.1.2.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2007-08-24 13:47:45 +01:00
parent 606bf78284
commit 2704afebec
2 changed files with 28 additions and 1 deletions

View File

@ -28,4 +28,4 @@ obj-$(CONFIG_CPU_TX49XX) += dump_tlb.o
obj-$(CONFIG_CPU_VR41XX) += dump_tlb.o
# libgcc-style stuff needed in the kernel
obj-y += ashldi3.o ashrdi3.o lshrdi3.o ucmpdi2.o
obj-y += ashldi3.o ashrdi3.o cmpdi2.o lshrdi3.o ucmpdi2.o

27
arch/mips/lib/cmpdi2.c Normal file
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@ -0,0 +1,27 @@
#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);