From bb89ec1a7ec2f8d35033df9e47b3604925da3bd3 Mon Sep 17 00:00:00 2001 From: jljusten Date: Tue, 28 Jun 2011 16:47:23 +0000 Subject: InOsEmuPkg: Rename package to EmulatorPkg & Sec to Host * Rename InOsEmuPkg to EmulatorPkg * Rename Unix/Sec to Unix/Host Signed-off-by: jljusten Reviewed-by: andrewfish Reviewed-by: geekboy15a git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11918 6f19259b-4bc3-4df7-8a09-765794883524 --- .../Library/DxeCoreTimerLib/DxeCoreTimerLib.c | 128 +++++++++++++++++++++ 1 file changed, 128 insertions(+) create mode 100644 EmulatorPkg/Library/DxeCoreTimerLib/DxeCoreTimerLib.c (limited to 'EmulatorPkg/Library/DxeCoreTimerLib/DxeCoreTimerLib.c') diff --git a/EmulatorPkg/Library/DxeCoreTimerLib/DxeCoreTimerLib.c b/EmulatorPkg/Library/DxeCoreTimerLib/DxeCoreTimerLib.c new file mode 100644 index 0000000000..db3b313829 --- /dev/null +++ b/EmulatorPkg/Library/DxeCoreTimerLib/DxeCoreTimerLib.c @@ -0,0 +1,128 @@ +/** @file + A non-functional instance of the Timer Library. + + Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.
+ This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php. + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#include +#include +#include +#include +#include +#include + +#include + + + +/** + Stalls the CPU for at least the given number of microseconds. + + Stalls the CPU for the number of microseconds specified by MicroSeconds. + + @param MicroSeconds The minimum number of microseconds to delay. + + @return The value of MicroSeconds inputted. + +**/ +UINTN +EFIAPI +MicroSecondDelay ( + IN UINTN MicroSeconds + ) +{ + return NanoSecondDelay (MicroSeconds * 1000); +} + + +/** + Stalls the CPU for at least the given number of nanoseconds. + + Stalls the CPU for the number of nanoseconds specified by NanoSeconds. + + @param NanoSeconds The minimum number of nanoseconds to delay. + + @return The value of NanoSeconds inputted. + +**/ +UINTN +EFIAPI +NanoSecondDelay ( + IN UINTN NanoSeconds + ) +{ + gEmuThunk->Sleep (NanoSeconds); + return NanoSeconds; +} + + +/** + Retrieves the current value of a 64-bit free running performance counter. + + The counter can either count up by 1 or count down by 1. If the physical + performance counter counts by a larger increment, then the counter values + must be translated. The properties of the counter can be retrieved from + GetPerformanceCounterProperties(). + + @return The current value of the free running performance counter. + +**/ +UINT64 +EFIAPI +GetPerformanceCounter ( + VOID + ) +{ + return gEmuThunk->QueryPerformanceCounter (); +} + +/** + Retrieves the 64-bit frequency in Hz and the range of performance counter + values. + + If StartValue is not NULL, then the value that the performance counter starts + with immediately after is it rolls over is returned in StartValue. If + EndValue is not NULL, then the value that the performance counter end with + immediately before it rolls over is returned in EndValue. The 64-bit + frequency of the performance counter in Hz is always returned. If StartValue + is less than EndValue, then the performance counter counts up. If StartValue + is greater than EndValue, then the performance counter counts down. For + example, a 64-bit free running counter that counts up would have a StartValue + of 0 and an EndValue of 0xFFFFFFFFFFFFFFFF. A 24-bit free running counter + that counts down would have a StartValue of 0xFFFFFF and an EndValue of 0. + + @param StartValue The value the performance counter starts with when it + rolls over. + @param EndValue The value that the performance counter ends with before + it rolls over. + + @return The frequency in Hz. + +**/ +UINT64 +EFIAPI +GetPerformanceCounterProperties ( + OUT UINT64 *StartValue, OPTIONAL + OUT UINT64 *EndValue OPTIONAL + ) +{ + + if (StartValue != NULL) { + *StartValue = 0ULL; + } + if (EndValue != NULL) { + *EndValue = (UINT64)-1LL; + } + + return gEmuThunk->QueryPerformanceFrequency (); +} + + -- cgit v1.2.3