[PATCH V2 03/17] MdePkg/BaseDebugLibSerialPort: Add a new api DebugVPrint

[Zhichao Gao <zhichao.gao@intel.com>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1395

Add a new api DebugVPrint implementation in the
DebugLib instance. This api would expose a print
routine with VaList parameter.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Zhichao Gao <zhichao.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Sean Brogan <sean.brogan@microsoft.com>
Cc: Michael Turner <Michael.Turner@microsoft.com>
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
---
 MdePkg/Library/BaseDebugLibSerialPort/DebugLib.c | 39 +++++++++++++++++++++---
 1 file changed, 34 insertions(+), 5 deletions(-)

diff --git a/MdePkg/Library/BaseDebugLibSerialPort/DebugLib.c b/MdePkg/Library/BaseDebugLibSerialPort/DebugLib.c
index ffb84b39e5..0321e9c955 100644
--- a/MdePkg/Library/BaseDebugLibSerialPort/DebugLib.c
+++ b/MdePkg/Library/BaseDebugLibSerialPort/DebugLib.c
@@ -7,7 +7,7 @@
   being blocked.  This may occur if a key(s) are pressed in a terminal emulator
   used to monitor the DEBUG() and ASSERT() messages.
 
-  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
@@ -47,6 +47,7 @@ BaseDebugLibSerialPortConstructor (
   return SerialPortInitialize ();
 }
 
+
 /**
   Prints a debug message to the debug output device if the specified error level is enabled.
 
@@ -70,9 +71,38 @@ DebugPrint (
   ...
   )
 {
-  CHAR8    Buffer[MAX_DEBUG_MESSAGE_LENGTH];
   VA_LIST  Marker;
 
+  VA_START (Marker, Format);
+  DebugVPrint (ErrorLevel, Format, Marker);
+  VA_END (Marker);
+}
+
+
+/**
+  Prints a debug message to the debug output device if the specified error level is enabled.
+
+  If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
+  GetDebugPrintErrorLevel (), then print the message specified by Format and the
+  associated variable argument list to the debug output device.
+
+  If Format is NULL, then ASSERT().
+
+  @param  ErrorLevel    The error level of the debug message.
+  @param  Format        Format string for the debug message to print.
+  @param  VaListMarker  VA_LIST marker for the variable argument list.
+
+**/
+VOID
+EFIAPI
+DebugVPrint (
+  IN  UINTN        ErrorLevel,
+  IN  CONST CHAR8  *Format,
+  IN  VA_LIST       VaListMarker
+  )
+{
+  CHAR8    Buffer[MAX_DEBUG_MESSAGE_LENGTH];
+
   //
   // If Format is NULL, then ASSERT().
   //
@@ -88,9 +118,7 @@ DebugPrint (
   //
   // Convert the DEBUG() message to an ASCII String
   //
-  VA_START (Marker, Format);
-  AsciiVSPrint (Buffer, sizeof (Buffer), Format, Marker);
-  VA_END (Marker);
+  AsciiVSPrint (Buffer, sizeof (Buffer), Format, VaListMarker);
 
   //
   // Send the print string to a Serial Port
@@ -264,6 +292,7 @@ DebugClearMemoryEnabled (
   return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);
 }
 
+
 /**
   Returns TRUE if any one of the bit is set both in ErrorLevel and PcdFixedDebugPrintErrorLevel.
 
-- 
2.16.2.windows.1