[edk2-devel] [PATCH 2/2] EmbeddedPkg/TimeBaseLib: remove useless truncation to 32-bit
Laszlo Ersek
lersek at redhat.com
Mon Dec 21 11:36:57 UTC 2020
EfiTimeToEpoch() calls EfiGetEpochDays() internally, which (reasonably)
returns a UINTN. But then EfiTimeToEpoch() truncates the EfiGetEpochDays()
retval to UINT32 for no good reason, effectively restricting Time->Year
under 2106.
This truncation was pointed out with a valid warning (= build error) by
VS2019.
Allow EfiTimeToEpoch() to return / propagate a UINTN value.
Cc: Ard Biesheuvel <ard.biesheuvel at arm.com>
Cc: Leif Lindholm <leif at nuviainc.com>
Cc: Philippe Mathieu-Daudé <philmd at redhat.com>
Signed-off-by: Laszlo Ersek <lersek at redhat.com>
---
Notes:
This patch may only be committed after the edk2-platforms patch
"Silicon/Marvell/RealTimeClockLib: make EpochSeconds, WakeupSeconds
UINTN".
EmbeddedPkg/Include/Library/TimeBaseLib.h | 2 +-
EmbeddedPkg/Library/TimeBaseLib/TimeBaseLib.c | 6 +++---
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/EmbeddedPkg/Include/Library/TimeBaseLib.h b/EmbeddedPkg/Include/Library/TimeBaseLib.h
index 3c2d3660c66c..90853c3f4b93 100644
--- a/EmbeddedPkg/Include/Library/TimeBaseLib.h
+++ b/EmbeddedPkg/Include/Library/TimeBaseLib.h
@@ -83,7 +83,7 @@ EpochToEfiTime (
/**
Converts EFI_TIME to Epoch seconds (elapsed since 1970 JANUARY 01, 00:00:00 UTC)
**/
-UINT32
+UINTN
EFIAPI
EfiTimeToEpoch (
IN EFI_TIME *Time
diff --git a/EmbeddedPkg/Library/TimeBaseLib/TimeBaseLib.c b/EmbeddedPkg/Library/TimeBaseLib/TimeBaseLib.c
index 136ce8a51e86..78fc7b6cd2e5 100644
--- a/EmbeddedPkg/Library/TimeBaseLib/TimeBaseLib.c
+++ b/EmbeddedPkg/Library/TimeBaseLib/TimeBaseLib.c
@@ -97,24 +97,24 @@ EfiGetEpochDays (
return EpochDays;
}
/**
Converts EFI_TIME to Epoch seconds (elapsed since 1970 JANUARY 01, 00:00:00 UTC)
**/
-UINT32
+UINTN
EFIAPI
EfiTimeToEpoch (
IN EFI_TIME *Time
)
{
- UINT32 EpochDays; // Number of days elapsed since EPOCH_JULIAN_DAY
- UINT32 EpochSeconds;
+ UINTN EpochDays; // Number of days elapsed since EPOCH_JULIAN_DAY
+ UINTN EpochSeconds;
EpochDays = EfiGetEpochDays (Time);
EpochSeconds = (EpochDays * SEC_PER_DAY) + ((UINTN)Time->Hour * SEC_PER_HOUR) + (Time->Minute * SEC_PER_MIN) + Time->Second;
return EpochSeconds;
}
/**
returns Day of the week [0-6] 0=Sunday
**/
--
2.19.1.3.g30247aa5d201
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