Fix bug in AsmCpuVirtual() to return 1 instead of 0 when CPU is in virtual mode.

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / SetJump.c

diff --git a/MdePkg/Library/BaseLib/Ia32/SetJump.c b/MdePkg/Library/BaseLib/Ia32/SetJump.c
index b96ec3a8ff4e0c190fa81510208a4e441beb7070..a99802d506663e929f84a94308a824a26b8d681e 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/SetJump.c
+++ b/MdePkg/Library/BaseLib/Ia32/SetJump.c
@@ -1,8 +1,8 @@
 /** @file\r
   Implementation of SetJump() on IA-32.\r
 \r
-  Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
-  All rights reserved. This program and the accompanying materials\r
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
+  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
@@ -12,17 +12,42 @@
 \r
 **/\r
 \r
-//\r
-// Include common header file for this module.\r
-//\r
-#include "CommonHeader.h"\r
 \r
+#include "BaseLibInternals.h"\r
+\r
+/**\r
+  Worker function that checks ASSERT condition for JumpBuffer\r
+\r
+  Checks ASSERT condition for JumpBuffer.\r
+\r
+  If JumpBuffer is NULL, then ASSERT().\r
+  For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().\r
+\r
+  @param  JumpBuffer    A pointer to CPU context buffer.\r
+\r
+**/\r
 VOID\r
 EFIAPI\r
 InternalAssertJumpBuffer (\r
   IN      BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer\r
   );\r
 \r
+/**\r
+  Saves the current CPU context that can be restored with a call to LongJump()\r
+  and returns 0.\r
+\r
+  Saves the current CPU context in the buffer specified by JumpBuffer and\r
+  returns 0. The initial call to SetJump() must always return 0. Subsequent\r
+  calls to LongJump() cause a non-zero value to be returned by SetJump().\r
+\r
+  If JumpBuffer is NULL, then ASSERT().\r
+  For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().\r
+\r
+  @param  JumpBuffer  A pointer to CPU context buffer.\r
+\r
+  @retval 0 Indicates a return from SetJump().\r
+\r
+**/\r
 _declspec (naked)\r
 UINTN\r
 EFIAPI\r