bbb8a81858
These can be used, for instance, to automate the population of an SMBIOS Type 0 BIOS Release Date when building a UEFI firmware (which is how we plan to use these macros for the Raspberry Pi platform). These macros should work for any compiler that follows ISO/IEC 9899, but we add a check for the compiler we have tested to be on the safe side. Note that we decided against adding a #error or #warn for compilers that haven't been validated, as we don't want to introduce breakage for people who may already be using the header with something else than gcc, MSVC or Clang. Instead, we expect those to send a patch that adds their compiler to the list, once they have tested the macros there. Signed-off-by: Pete Batard <pete@akeo.ie> Reviewed-by: Leif Lindholm <leif@nuviainc.com>
103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/** @file
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*
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* Copyright (c) 2016, Hisilicon Limited. All rights reserved.
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* Copyright (c) 2016-2019, Linaro Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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#ifndef _TIME_BASE_LIB_H_
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#define _TIME_BASE_LIB_H_
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#include <Uefi/UefiBaseType.h>
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//
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// Convenience macros to obtain a build date
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//
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// These macros should work for any compiler that follows ISO/IEC 9899,
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// in which case __DATE__ is defined as a "Mmm dd yyyy" 11 chars string,
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// but add an explicit filter for compilers that have been validated.
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//
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#if (defined(__GNUC__) || defined(_MSC_VER) || defined(__clang__))
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#define TIME_BUILD_YEAR (__DATE__[7] == '?' ? 1900 \
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: (((__DATE__[7] - '0') * 1000 ) \
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+ (__DATE__[8] - '0') * 100 \
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+ (__DATE__[9] - '0') * 10 \
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+ __DATE__[10] - '0'))
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#define TIME_BUILD_MONTH ( __DATE__ [2] == '?' ? 1 \
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: __DATE__ [2] == 'n' ? ( \
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__DATE__ [1] == 'a' ? 1 : 6) \
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: __DATE__ [2] == 'b' ? 2 \
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: __DATE__ [2] == 'r' ? ( \
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__DATE__ [0] == 'M' ? 3 : 4) \
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: __DATE__ [2] == 'y' ? 5 \
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: __DATE__ [2] == 'l' ? 7 \
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: __DATE__ [2] == 'g' ? 8 \
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: __DATE__ [2] == 'p' ? 9 \
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: __DATE__ [2] == 't' ? 10 \
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: __DATE__ [2] == 'v' ? 11 \
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: 12)
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#define TIME_BUILD_DAY ( __DATE__[4] == '?' ? 1 \
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: ((__DATE__[4] == ' ' ? 0 : \
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((__DATE__[4] - '0') * 10)) \
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+ __DATE__[5] - '0'))
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#endif
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// Define EPOCH (1970-JANUARY-01) in the Julian Date representation
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#define EPOCH_JULIAN_DATE 2440588
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// Seconds per unit
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#define SEC_PER_MIN ((UINTN) 60)
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#define SEC_PER_HOUR ((UINTN) 3600)
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#define SEC_PER_DAY ((UINTN) 86400)
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#define SEC_PER_MONTH ((UINTN) 2,592,000)
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#define SEC_PER_YEAR ((UINTN) 31,536,000)
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BOOLEAN
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EFIAPI
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IsLeapYear (
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IN EFI_TIME *Time
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);
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BOOLEAN
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EFIAPI
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IsDayValid (
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IN EFI_TIME *Time
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);
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BOOLEAN
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EFIAPI
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IsTimeValid (
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IN EFI_TIME *Time
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);
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/**
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Converts Epoch seconds (elapsed since 1970 JANUARY 01, 00:00:00 UTC) to EFI_TIME
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**/
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VOID
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EFIAPI
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EpochToEfiTime (
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IN UINTN EpochSeconds,
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OUT EFI_TIME *Time
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);
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/**
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Converts EFI_TIME to Epoch seconds (elapsed since 1970 JANUARY 01, 00:00:00 UTC)
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**/
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UINT32
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EFIAPI
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EfiTimeToEpoch (
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IN EFI_TIME *Time
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);
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/**
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returns Day of the week [0-6] 0=Sunday
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**/
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UINTN
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EfiTimeToWday (
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IN EFI_TIME *Time
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);
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#endif
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