[MIPS] Add __cmpdi2 (2704afeb) · Commits · 戴 / test

arch/mips/lib/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -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

0 → 100644

+27 −0

Original line number	Diff line number	Diff line
		#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);