Moved the MdePkg to OldMdePkg so that new code in MdePkg does not break existing...

[mirror_edk2.git] / OldMdePkg / Library / BaseLib / Cpu.c

diff --git a/OldMdePkg/Library/BaseLib/Cpu.c b/OldMdePkg/Library/BaseLib/Cpu.c
new file mode 100644 (file)
index 0000000..cc7a608
--- /dev/null
+++ b/OldMdePkg/Library/BaseLib/Cpu.c
@@ -0,0 +1,67 @@
+/** @file\r
+  Base Library CPU Functions for all architectures.\r
+\r
+  Copyright (c) 2006, Intel Corporation<BR>\r
+  All rights reserved. This program and the accompanying materials\r
+  are licensed and made available under the terms and conditions of the BSD License\r
+  which accompanies this distribution.  The full text of the license may be found at\r
+  http://opensource.org/licenses/bsd-license.php\r
+\r
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+  Module Name:  Cpu.c\r
+\r
+**/\r
+\r
+/**\r
+  Disables CPU interrupts and returns the interrupt state prior to the disable\r
+  operation.\r
+\r
+  Disables CPU interrupts and returns the interrupt state prior to the disable\r
+  operation.\r
+\r
+  @retval TRUE  CPU interrupts were enabled on entry to this call.\r
+  @retval FALSE CPU interrupts were disabled on entry to this call.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+SaveAndDisableInterrupts (\r
+  VOID\r
+  )\r
+{\r
+  BOOLEAN                           InterruptState;\r
+\r
+  InterruptState = GetInterruptState ();\r
+  DisableInterrupts ();\r
+  return InterruptState;\r
+}\r
+\r
+/**\r
+  Set the current CPU interrupt state.\r
+\r
+  Sets the current CPU interrupt state to the state specified by\r
+  InterruptState. If InterruptState is TRUE, then interrupts are enabled. If\r
+  InterruptState is FALSE, then interrupts are disabled. InterruptState is\r
+  returned.\r
+\r
+  @param  InterruptState  TRUE if interrupts should enabled. FALSE if\r
+                          interrupts should be disabled.\r
+\r
+  @return InterruptState\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+SetInterruptState (\r
+  IN      BOOLEAN                   InterruptState\r
+  )\r
+{\r
+  if (InterruptState) {\r
+    EnableInterrupts ();\r
+  } else {\r
+    DisableInterrupts ();\r
+  }\r
+  return InterruptState;\r
+}\r