Clean checkin of the 6.03 code
BUG: 32495852
Change-Id: I5038a3bb41e217380c1188463daec07b1e9b6b48
diff --git a/gnu-efi/gnu-efi-3.0/lib/lock.c b/gnu-efi/gnu-efi-3.0/lib/lock.c
new file mode 100644
index 0000000..a33bec3
--- /dev/null
+++ b/gnu-efi/gnu-efi-3.0/lib/lock.c
@@ -0,0 +1,107 @@
+/*++
+
+Copyright (c) 1998 Intel Corporation
+
+Module Name:
+
+ lock.c
+
+Abstract:
+
+ Implements FLOCK
+
+
+
+Revision History
+
+--*/
+
+
+#include "lib.h"
+
+
+VOID
+InitializeLock (
+ IN OUT FLOCK *Lock,
+ IN EFI_TPL Priority
+ )
+/*++
+
+Routine Description:
+
+ Initialize a basic mutual exclusion lock. Each lock
+ provides mutual exclusion access at it's task priority
+ level. Since there is no-premption (at any TPL) or
+ multiprocessor support, acquiring the lock only consists
+ of raising to the locks TPL.
+
+ Note on a debug build the lock is acquired and released
+ to help ensure proper usage.
+
+Arguments:
+
+ Lock - The FLOCK structure to initialize
+
+ Priority - The task priority level of the lock
+
+
+Returns:
+
+ An initialized F Lock structure.
+
+--*/
+{
+ Lock->Tpl = Priority;
+ Lock->OwnerTpl = 0;
+ Lock->Lock = 0;
+}
+
+
+VOID
+AcquireLock (
+ IN FLOCK *Lock
+ )
+/*++
+
+Routine Description:
+
+ Raising to the task priority level of the mutual exclusion
+ lock, and then acquires ownership of the lock.
+
+Arguments:
+
+ Lock - The lock to acquire
+
+Returns:
+
+ Lock owned
+
+--*/
+{
+ RtAcquireLock (Lock);
+}
+
+
+VOID
+ReleaseLock (
+ IN FLOCK *Lock
+ )
+/*++
+
+Routine Description:
+
+ Releases ownership of the mutual exclusion lock, and
+ restores the previous task priority level.
+
+Arguments:
+
+ Lock - The lock to release
+
+Returns:
+
+ Lock unowned
+
+--*/
+{
+ RtReleaseLock (Lock);
+}