cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cmpdi2.c (470B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <linux/export.h>
      3
      4#include "libgcc.h"
      5
      6word_type __cmpdi2(long long a, long long b)
      7{
      8	const DWunion au = {
      9		.ll = a
     10	};
     11	const DWunion bu = {
     12		.ll = b
     13	};
     14
     15	if (au.s.high < bu.s.high)
     16		return 0;
     17	else if (au.s.high > bu.s.high)
     18		return 2;
     19
     20	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
     21		return 0;
     22	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
     23		return 2;
     24
     25	return 1;
     26}
     27EXPORT_SYMBOL(__cmpdi2);