From: Matthew Carlson <macarl@microsoft.com>

This adds a host based BaseTimerLib that won't assert.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Signed-off-by: Matthew Carlson <matthewfcarlson@gmail.com>
---
 UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/TimerLibPosix.c       | 125 ++++++++++++++++++++
 UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/BaseTimerLibPosix.inf |  38 ++++++
 UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/BaseTimerLibPosix.uni |  15 +++
 UnitTestFrameworkPkg/Test/UnitTestFrameworkPkgHostTest.dsc                 |   1 +
 UnitTestFrameworkPkg/UnitTestFrameworkPkgHost.dsc.inc                      |   4 +-
 5 files changed, 180 insertions(+), 3 deletions(-)

diff --git a/UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/TimerLibPosix.c b/UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/TimerLibPosix.c
new file mode 100644
index 000000000000..cd12dde7bd81
--- /dev/null
+++ b/UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/TimerLibPosix.c
@@ -0,0 +1,125 @@
+/** @file
+  A semi-functional instance of the Timer Library.
+
+  Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) Microsoft Corporation.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Library/TimerLib.h>
+#include <Library/DebugLib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+/**
+  Stalls the CPU for at least the given number of 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 * 1000000) / 1000000;
+}
+
+/**
+  Stalls the CPU for at least the given number of nanoseconds.
+
+  @param  NanoSeconds The minimum number of nanoseconds to delay.
+  @return The value of NanoSeconds inputted.
+
+**/
+UINTN
+EFIAPI
+NanoSecondDelay (
+  IN      UINTN                     NanoSeconds
+  )
+{
+  // Since this is a host based test, we don't actually want to stall
+  return 0;
+}
+
+/**
+  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 the current number of nanoseconds on the clock
+  struct timespec ts;
+  timespec_get(&ts, TIME_UTC);
+  return ts.tv_nsec;
+}
+
+/**
+  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
+  )
+{
+  return (UINT64)(-1);
+}
+
+/**
+  Converts elapsed ticks of performance counter to time in nanoseconds.
+
+  This function converts the elapsed ticks of running performance counter to
+  time value in unit of nanoseconds.
+
+  @param  Ticks     The number of elapsed ticks of running performance counter.
+
+  @return The elapsed time in nanoseconds.
+
+**/
+UINT64
+EFIAPI
+GetTimeInNanoSecond (
+  IN      UINT64                     Ticks
+  )
+{
+  return Ticks;
+}
diff --git a/UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/BaseTimerLibPosix.inf b/UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/BaseTimerLibPosix.inf
new file mode 100644
index 000000000000..aed6f15e1828
--- /dev/null
+++ b/UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/BaseTimerLibPosix.inf
@@ -0,0 +1,38 @@
+## @file
+#  An instance of Timer Library for posix compliant hosts.
+#
+#  A semi-functional instance of the Timer Library that can be used for host based testing
+#  as a functional timer library instance.
+
+#
+#  Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) Microsoft Corporation.
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = BaseTimerLibPosix
+  MODULE_UNI_FILE                = BaseTimerLibPosix.uni
+  FILE_GUID                      = a2a413b8-43c3-40cc-a298-be7a214d3564
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = TimerLib
+
+#
+#  VALID_ARCHITECTURES           = HOST
+#
+
+[Sources]
+  TimerLibPosix.c
+
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+
+[LibraryClasses]
+  DebugLib
diff --git a/UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/BaseTimerLibPosix.uni b/UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/BaseTimerLibPosix.uni
new file mode 100644
index 000000000000..21cae0e7c7aa
--- /dev/null
+++ b/UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/BaseTimerLibPosix.uni
@@ -0,0 +1,15 @@
+// @file
+// An instance of Timer Library for posix compliant hosts.
+//
+// A semi-functional instance of the Timer Library that can be used
+// for host based unit tests on posix compliant machines.
+//
+// Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
+// Copyright (c) Microsoft Corporation.
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+
+#string STR_MODULE_ABSTRACT             #language en-US "Host instance of Timer Library"
+
+#string STR_MODULE_DESCRIPTION          #language en-US "An instance of the Timer Library that can be used for host based unit tests."
diff --git a/UnitTestFrameworkPkg/Test/UnitTestFrameworkPkgHostTest.dsc b/UnitTestFrameworkPkg/Test/UnitTestFrameworkPkgHostTest.dsc
index 701e7299d767..f82b3b7a323e 100644
--- a/UnitTestFrameworkPkg/Test/UnitTestFrameworkPkgHostTest.dsc
+++ b/UnitTestFrameworkPkg/Test/UnitTestFrameworkPkgHostTest.dsc
@@ -30,4 +30,5 @@
   UnitTestFrameworkPkg/Library/CmockaLib/CmockaLib.inf
   UnitTestFrameworkPkg/Library/Posix/DebugLibPosix/DebugLibPosix.inf
   UnitTestFrameworkPkg/Library/Posix/MemoryAllocationLibPosix/MemoryAllocationLibPosix.inf
+  UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/BaseTimerLibPosix.inf
   UnitTestFrameworkPkg/Library/UnitTestLib/UnitTestLibCmocka.inf
diff --git a/UnitTestFrameworkPkg/UnitTestFrameworkPkgHost.dsc.inc b/UnitTestFrameworkPkg/UnitTestFrameworkPkgHost.dsc.inc
index e954968efc52..70d9f954d3ca 100644
--- a/UnitTestFrameworkPkg/UnitTestFrameworkPkgHost.dsc.inc
+++ b/UnitTestFrameworkPkg/UnitTestFrameworkPkgHost.dsc.inc
@@ -13,9 +13,7 @@
   UnitTestLib|UnitTestFrameworkPkg/Library/UnitTestLib/UnitTestLibCmocka.inf
   DebugLib|UnitTestFrameworkPkg/Library/Posix/DebugLibPosix/DebugLibPosix.inf
   MemoryAllocationLib|UnitTestFrameworkPkg/Library/Posix/MemoryAllocationLibPosix/MemoryAllocationLibPosix.inf
-
-[BuildOptions]
-  GCC:*_*_*_CC_FLAGS = -fno-pie
+  TimerLib|UnitTestFrameworkPkg/Library/Posix/BaseTimerLibPosix/BaseTimerLibPosix.inf
 
 [BuildOptions.common.EDKII.HOST_APPLICATION]
   #
-- 
2.27.0.windows.1


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