cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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s390-tod.h (719B)

      1/*
      2 * TOD (Time Of Day) clock
      3 *
      4 * Copyright 2018 Red Hat, Inc.
      5 * Author(s): David Hildenbrand <david@redhat.com>
      6 *
      7 * This work is licensed under the terms of the GNU GPL, version 2 or later.
      8 * See the COPYING file in the top-level directory.
      9 */
     10
     11#ifndef TARGET_S390_TOD_H
     12#define TARGET_S390_TOD_H
     13
     14/* The value of the TOD clock for 1.1.1970. */
     15#define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
     16
     17/* Converts ns to s390's clock format */
     18static inline uint64_t time2tod(uint64_t ns)
     19{
     20    return (ns << 9) / 125 + (((ns & 0xff80000000000000ull) / 125) << 9);
     21}
     22
     23/* Converts s390's clock format to ns */
     24static inline uint64_t tod2time(uint64_t t)
     25{
     26    return ((t >> 9) * 125) + (((t & 0x1ff) * 125) >> 9);
     27}
     28
     29#endif