4 files changed, 32 insertions, 0 deletions
diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/ConstantTimeClock.c b/CryptoPkg/Library/BaseCryptLib/SysCall/ConstantTimeClock.c
index 2956b92d08..4f23de2830 100644
--- a/CryptoPkg/Library/BaseCryptLib/SysCall/ConstantTimeClock.c
+++ b/CryptoPkg/Library/BaseCryptLib/SysCall/ConstantTimeClock.c
@@ -42,3 +42,11 @@ gmtime (
 {
   return NULL;
 }
+
+unsigned int
+sleep (
+  unsigned int  seconds
+  )
+{
+  return 0;
+}
diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c b/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
index 2dfc6fe6c5..30c93a45ea 100644
--- a/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
+++ b/CryptoPkg/Library/BaseCryptLib/SysCall/TimerWrapper.c
@@ -9,6 +9,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 #include <Uefi.h>
 #include <CrtLibSupport.h>
+#include <Library/UefiBootServicesTableLib.h>
 #include <Library/UefiRuntimeServicesTableLib.h>
 
 //
@@ -195,3 +196,12 @@ gmtime (
 
   return GmTime;
 }
+
+unsigned int
+sleep (
+  unsigned int  seconds
+  )
+{
+  gBS->Stall (seconds * 1000 * 1000);
+  return 0;
+}
diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/UnitTestHostCrtWrapper.c b/CryptoPkg/Library/BaseCryptLib/SysCall/UnitTestHostCrtWrapper.c
index 244e57437e..1ec7fa37cd 100644
--- a/CryptoPkg/Library/BaseCryptLib/SysCall/UnitTestHostCrtWrapper.c
+++ b/CryptoPkg/Library/BaseCryptLib/SysCall/UnitTestHostCrtWrapper.c
@@ -104,4 +104,12 @@ getegid (
   return 0;
 }
 
+unsigned int
+sleep (
+  unsigned int  seconds
+  )
+{
+  return 0;
+}
+
 int  errno = 0;
diff --git a/CryptoPkg/Library/Include/CrtLibSupport.h b/CryptoPkg/Library/Include/CrtLibSupport.h
index afc00956ab..a9171fba36 100644
--- a/CryptoPkg/Library/Include/CrtLibSupport.h
+++ b/CryptoPkg/Library/Include/CrtLibSupport.h
@@ -16,6 +16,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 #include <Library/BaseMemoryLib.h>
 #include <Library/DebugLib.h>
 #include <Library/PrintLib.h>
+#include <Library/TimerLib.h>
 
 #define OPENSSLDIR  ""
 #define ENGINESDIR  ""
@@ -334,6 +335,11 @@ gmtime     (
   const time_t *
   );
 
+unsigned int
+sleep (
+  unsigned int  seconds
+  );
+
 uid_t
 getuid      (
   void