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 (501B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 */
      4
      5#include <linux/export.h>
      6
      7#include <linux/libgcc.h>
      8
      9word_type notrace __cmpdi2(long long a, long long b)
     10{
     11	const DWunion au = {
     12		.ll = a
     13	};
     14	const DWunion bu = {
     15		.ll = b
     16	};
     17
     18	if (au.s.high < bu.s.high)
     19		return 0;
     20	else if (au.s.high > bu.s.high)
     21		return 2;
     22
     23	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
     24		return 0;
     25	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
     26		return 2;
     27
     28	return 1;
     29}
     30EXPORT_SYMBOL(__cmpdi2);