From 2704afebecc8e268e8c873b6dfab2077d679b593 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Fri, 24 Aug 2007 13:47:45 +0100 Subject: [PATCH] [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 --- arch/mips/lib/Makefile | 2 +- arch/mips/lib/cmpdi2.c | 27 +++++++++++++++++++++++++++ 2 files changed, 28 insertions(+), 1 deletion(-) create mode 100644 arch/mips/lib/cmpdi2.c diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile index 91ed1eb3310..8810dfb915d 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 00000000000..8c1306437ed --- /dev/null +++ b/arch/mips/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); -- 2.20.1