From 6cc0735d0dbf6a0e5f802f47d51e1e463466955c Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sat, 25 Aug 2007 15:10:44 -0700 Subject: [SPARC32]: Add __cmpdi2() libcall implementation ala. MIPS. Device mapper generates calls to this with recent versions of gcc. Signed-off-by: David S. Miller --- arch/sparc/lib/cmpdi2.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 arch/sparc/lib/cmpdi2.c (limited to 'arch/sparc/lib/cmpdi2.c') diff --git a/arch/sparc/lib/cmpdi2.c b/arch/sparc/lib/cmpdi2.c new file mode 100644 index 00000000000..8c1306437ed --- /dev/null +++ b/arch/sparc/lib/cmpdi2.c @@ -0,0 +1,27 @@ +#include + +#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); -- cgit v1.2.3