diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2007-08-24 13:47:45 +0100 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2007-08-27 02:17:00 +0100 |
commit | 2704afebecc8e268e8c873b6dfab2077d679b593 (patch) | |
tree | 275a55b0401599f5362fad7ff90e9ea4590d0dfb /arch/mips | |
parent | 606bf782846163b87868d8cdd46f44241c0c2a6b (diff) | |
download | linux-2704afebecc8e268e8c873b6dfab2077d679b593.tar.bz2 |
[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>
Diffstat (limited to 'arch/mips')
-rw-r--r-- | arch/mips/lib/Makefile | 2 | ||||
-rw-r--r-- | arch/mips/lib/cmpdi2.c | 27 |
2 files changed, 28 insertions, 1 deletions
diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile index 91ed1eb33102..8810dfb915dd 100644 --- a/arch/mips/lib/Makefile +++ b/arch/mips/lib/Makefile @@ -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 diff --git a/arch/mips/lib/cmpdi2.c b/arch/mips/lib/cmpdi2.c new file mode 100644 index 000000000000..8c1306437ed1 --- /dev/null +++ b/arch/mips/lib/cmpdi2.c @@ -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); |