| /* |
| * TOD (Time Of Day) clock |
| * |
| * Copyright 2018 Red Hat, Inc. |
| * Author(s): David Hildenbrand <david@redhat.com> |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| * See the COPYING file in the top-level directory. |
| */ |
| |
| #ifndef TARGET_S390_TOD_H |
| #define TARGET_S390_TOD_H |
| |
| /* The value of the TOD clock for 1.1.1970. */ |
| #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL |
| |
| /* Converts ns to s390's clock format */ |
| static inline uint64_t time2tod(uint64_t ns) |
| { |
| return (ns << 9) / 125 + (((ns & 0xff80000000000000ull) / 125) << 9); |
| } |
| |
| /* Converts s390's clock format to ns */ |
| static inline uint64_t tod2time(uint64_t t) |
| { |
| return ((t >> 9) * 125) + (((t & 0x1ff) * 125) >> 9); |
| } |
| |
| #endif |
