Add the EFI_PRINT2S_PROTOCOL as a safe version of the EFI_PRINT2_PROTOCOL,
the EFI_PRINT2S_PROTOCOL replaces the following 2 services in
EFI_PRINT2_PROTOCOL:
UNICODE_VALUE_TO_STRING
ASCII_VALUE_TO_STRING

with:
UNICODE_VALUE_TO_STRING_S
ASCII_VALUE_TO_STRING_S

The 2 new services perform checks to the input parameters and will return
relative status to reflect the check result.

Return RETURN_INVALID_PARAMETER when:
1). The input Buffer is NULL.
2). The input BufferSize is greater than (PcdMaximumUnicodeStringLength *
sizeof (CHAR16) + 1) for UnicodeValueToStringS or greater than
PcdMaximumAsciiStringLength for AsciiValueToStringS.
3). The input Flags is not set properly.
4). The input Width is not smaller than MAXIMUM_VALUE_CHARACTERS.

Return RETURN_BUFFER_TOO_SMALL when:
1). The input BufferSize cannot hold the converted value.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
---
 MdeModulePkg/Include/Protocol/Print2.h       | 150 +++++++++++++++++++-
 MdeModulePkg/MdeModulePkg.dec                |   3 +-
 MdeModulePkg/Universal/PrintDxe/Print.c      |  18 ++-
 MdeModulePkg/Universal/PrintDxe/PrintDxe.inf |   7 +-
 MdeModulePkg/Universal/PrintDxe/PrintDxe.uni |  10 +-
 5 files changed, 175 insertions(+), 13 deletions(-)

diff --git a/MdeModulePkg/Include/Protocol/Print2.h b/MdeModulePkg/Include/Protocol/Print2.h
index 8cad6fd..e4dd6f2 100644
--- a/MdeModulePkg/Include/Protocol/Print2.h
+++ b/MdeModulePkg/Include/Protocol/Print2.h
@@ -1,7 +1,8 @@
 /** @file
 
-  This print protocol defines six basic print functions to 
-  print the format unicode and ascii string.
+  Produces EFI_PRINT2_PROTOCOL and EFI_PRINT2S_PROTOCOL.
+  These protocols define basic print functions to  print the format unicode and
+  ascii string.
 
 Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials are licensed and made available under 
@@ -515,4 +516,149 @@ struct _EFI_PRINT2_PROTOCOL {
 
 extern EFI_GUID gEfiPrint2ProtocolGuid;
 
+
+#define EFI_PRINT2S_PROTOCOL_GUID  \
+  { 0xcc252d2, 0xc106, 0x4661, { 0xb5, 0xbd, 0x31, 0x47, 0xa4, 0xf8, 0x1f, 0x92 } }
+
+//
+// Forward reference for pure ANSI compatability
+//
+typedef struct _EFI_PRINT2S_PROTOCOL  EFI_PRINT2S_PROTOCOL;
+
+/**
+  Converts a decimal value to a Null-terminated Unicode string.
+
+  Converts the decimal number specified by Value to a Null-terminated Unicode
+  string specified by Buffer containing at most Width characters. No padding of
+  spaces is ever performed. If Width is 0 then a width of
+  MAXIMUM_VALUE_CHARACTERS is assumed. If the conversion contains more than
+  Width characters, then only the first Width characters are placed in Buffer.
+  Additional conversion parameters are specified in Flags.
+
+  The Flags bit LEFT_JUSTIFY is always ignored.
+  All conversions are left justified in Buffer.
+  If Width is 0, PREFIX_ZERO is ignored in Flags.
+  If COMMA_TYPE is set in Flags, then PREFIX_ZERO is ignored in Flags, and
+  commas are inserted every 3rd digit starting from the right.
+  If RADIX_HEX is set in Flags, then the output buffer will be formatted in
+  hexadecimal format.
+  If Value is < 0 and RADIX_HEX is not set in Flags, then the fist character in
+  Buffer is a '-'.
+  If PREFIX_ZERO is set in Flags and PREFIX_ZERO is not being ignored, then
+  Buffer is padded with '0' characters so the combination of the optional '-'
+  sign character, '0' characters, digit characters for Value, and the
+  Null-terminator add up to Width characters.
+
+  If Buffer is not aligned on a 16-bit boundary, then ASSERT().
+  If an error would be returned, then the function will also ASSERT().
+
+  @param  Buffer      The pointer to the output buffer for the produced
+                      Null-terminated Unicode string.
+  @param  BufferSize  The size of Buffer in bytes, including the
+                      Null-terminator.
+  @param  Flags       The bitmask of flags that specify left justification,
+                      zero pad, and commas.
+  @param  Value       The 64-bit signed value to convert to a string.
+  @param  Width       The maximum number of Unicode characters to place in
+                      Buffer, not including the Null-terminator.
+
+  @retval RETURN_SUCCESS           The decimal value is converted.
+  @retval RETURN_BUFFER_TOO_SMALL  If BufferSize cannot hold the converted
+                                   value.
+  @retval RETURN_INVALID_PARAMETER If Buffer is NULL.
+                                   If PcdMaximumUnicodeStringLength is not
+                                   zero, and BufferSize is greater than
+                                   (PcdMaximumUnicodeStringLength *
+                                   sizeof (CHAR16) + 1).
+                                   If unsupported bits are set in Flags.
+                                   If both COMMA_TYPE and RADIX_HEX are set in
+                                   Flags.
+                                   If Width >= MAXIMUM_VALUE_CHARACTERS.
+
+**/
+typedef
+RETURN_STATUS
+(EFIAPI *UNICODE_VALUE_TO_STRING_S)(
+  IN OUT CHAR16  *Buffer,
+  IN UINTN       BufferSize,
+  IN UINTN       Flags,
+  IN INT64       Value,
+  IN UINTN       Width
+  );
+
+/**
+  Converts a decimal value to a Null-terminated Ascii string.
+
+  Converts the decimal number specified by Value to a Null-terminated Ascii
+  string specified by Buffer containing at most Width characters. No padding of
+  spaces is ever performed. If Width is 0 then a width of
+  MAXIMUM_VALUE_CHARACTERS is assumed. If the conversion contains more than
+  Width characters, then only the first Width characters are placed in Buffer.
+  Additional conversion parameters are specified in Flags.
+
+  The Flags bit LEFT_JUSTIFY is always ignored.
+  All conversions are left justified in Buffer.
+  If Width is 0, PREFIX_ZERO is ignored in Flags.
+  If COMMA_TYPE is set in Flags, then PREFIX_ZERO is ignored in Flags, and
+  commas are inserted every 3rd digit starting from the right.
+  If RADIX_HEX is set in Flags, then the output buffer will be formatted in
+  hexadecimal format.
+  If Value is < 0 and RADIX_HEX is not set in Flags, then the fist character in
+  Buffer is a '-'.
+  If PREFIX_ZERO is set in Flags and PREFIX_ZERO is not being ignored, then
+  Buffer is padded with '0' characters so the combination of the optional '-'
+  sign character, '0' characters, digit characters for Value, and the
+  Null-terminator add up to Width characters.
+
+  If Buffer is not aligned on a 16-bit boundary, then ASSERT().
+  If an error would be returned, then the function will also ASSERT().
+
+  @param  Buffer      The pointer to the output buffer for the produced
+                      Null-terminated Ascii string.
+  @param  BufferSize  The size of Buffer in bytes, including the
+                      Null-terminator.
+  @param  Flags       The bitmask of flags that specify left justification,
+                      zero pad, and commas.
+  @param  Value       The 64-bit signed value to convert to a string.
+  @param  Width       The maximum number of Ascii characters to place in
+                      Buffer, not including the Null-terminator.
+
+  @retval RETURN_SUCCESS           The decimal value is converted.
+  @retval RETURN_BUFFER_TOO_SMALL  If BufferSize cannot hold the converted
+                                   value.
+  @retval RETURN_INVALID_PARAMETER If Buffer is NULL.
+                                   If PcdMaximumAsciiStringLength is not
+                                   zero, and BufferSize is greater than
+                                   PcdMaximumAsciiStringLength.
+                                   If unsupported bits are set in Flags.
+                                   If both COMMA_TYPE and RADIX_HEX are set in
+                                   Flags.
+                                   If Width >= MAXIMUM_VALUE_CHARACTERS.
+
+**/
+typedef
+RETURN_STATUS
+(EFIAPI *ASCII_VALUE_TO_STRING_S)(
+  IN OUT CHAR8   *Buffer,
+  IN  UINTN      BufferSize,
+  IN  UINTN      Flags,
+  IN  INT64      Value,
+  IN  UINTN      Width
+  );
+
+struct _EFI_PRINT2S_PROTOCOL {
+  UNICODE_BS_PRINT                     UnicodeBSPrint;
+  UNICODE_S_PRINT                      UnicodeSPrint;
+  UNICODE_BS_PRINT_ASCII_FORMAT        UnicodeBSPrintAsciiFormat;
+  UNICODE_S_PRINT_ASCII_FORMAT         UnicodeSPrintAsciiFormat;
+  UNICODE_VALUE_TO_STRING_S            UnicodeValueToStringS;
+  ASCII_BS_PRINT                       AsciiBSPrint;
+  ASCII_S_PRINT                        AsciiSPrint;
+  ASCII_BS_PRINT_UNICODE_FORMAT        AsciiBSPrintUnicodeFormat;
+  ASCII_S_PRINT_UNICODE_FORMAT         AsciiSPrintUnicodeFormat;
+  ASCII_VALUE_TO_STRING_S              AsciiValueToStringS;
+};
+
+extern EFI_GUID gEfiPrint2SProtocolGuid;
+
 #endif
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index 273cd7e..c95633c 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -427,9 +427,10 @@
   #  If developer need implement such functionality, they should use BasePeCoffLib.
   gEfiLoadPeImageProtocolGuid    = { 0x5CB5C776, 0x60D5, 0x45EE, { 0x88, 0x3C, 0x45, 0x27, 0x08, 0xCD, 0x74, 0x3F }}
 
-  ## Print protocol defines basic print functions to print the format unicode and ascii string.
+  ## Print protocols define basic print functions to print the format unicode and ascii string.
   # Include/Protocol/Print2.h
   gEfiPrint2ProtocolGuid          = { 0xf05976ef, 0x83f1, 0x4f3d, { 0x86, 0x19, 0xf7, 0x59, 0x5d, 0x41, 0xe5, 0x38 } }
+  gEfiPrint2SProtocolGuid         = { 0xcc252d2, 0xc106, 0x4661, { 0xb5, 0xbd, 0x31, 0x47, 0xa4, 0xf8, 0x1f, 0x92 } }
 
   ## This protocol defines the generic memory test interfaces in Dxe phase.
   # Include/Protocol/GenericMemoryTest.h
diff --git a/MdeModulePkg/Universal/PrintDxe/Print.c b/MdeModulePkg/Universal/PrintDxe/Print.c
index af55acf..85bc724 100644
--- a/MdeModulePkg/Universal/PrintDxe/Print.c
+++ b/MdeModulePkg/Universal/PrintDxe/Print.c
@@ -1,7 +1,7 @@
 /** @file
-  This driver produces Print2 protocol layered on top of the PrintLib from the MdePkg.
+  This driver produces Print2 protocols layered on top of the PrintLib from the MdePkg.
 
-Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2009 - 2017, 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
@@ -35,6 +35,19 @@ CONST EFI_PRINT2_PROTOCOL mPrint2Protocol = {
   AsciiValueToString
 };
 
+CONST EFI_PRINT2S_PROTOCOL mPrint2SProtocol = {
+  UnicodeBSPrint,
+  UnicodeSPrint,
+  UnicodeBSPrintAsciiFormat,
+  UnicodeSPrintAsciiFormat,
+  UnicodeValueToStringS,
+  AsciiBSPrint,
+  AsciiSPrint,
+  AsciiBSPrintUnicodeFormat,
+  AsciiSPrintUnicodeFormat,
+  AsciiValueToStringS
+};
+
 /**
   The user Entry Point for Print module.
 
@@ -59,6 +72,7 @@ PrintEntryPoint (
   Status = gBS->InstallMultipleProtocolInterfaces (
                   &mPrintThunkHandle,
                   &gEfiPrint2ProtocolGuid, &mPrint2Protocol,
+                  &gEfiPrint2SProtocolGuid, &mPrint2SProtocol,
                   NULL
                   );
   ASSERT_EFI_ERROR (Status);
diff --git a/MdeModulePkg/Universal/PrintDxe/PrintDxe.inf b/MdeModulePkg/Universal/PrintDxe/PrintDxe.inf
index 9ea0652..19eef5a 100644
--- a/MdeModulePkg/Universal/PrintDxe/PrintDxe.inf
+++ b/MdeModulePkg/Universal/PrintDxe/PrintDxe.inf
@@ -1,9 +1,9 @@
 ## @file
-#  Print DXE driver that produces Print2 Protocol.
+#  Print DXE driver that produces Print2 Protocols.
 #
-#  This driver produces Print2 protocol layered on top of the PrintLib from the MdePkg.
+#  This driver produces Print2 protocols layered on top of the PrintLib from the MdePkg.
 #
-#  Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2009 - 2017, 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
@@ -44,6 +44,7 @@
 
 [Protocols]
   gEfiPrint2ProtocolGuid    ## PRODUCES
+  gEfiPrint2SProtocolGuid   ## PRODUCES
 
 [Depex]
   TRUE
diff --git a/MdeModulePkg/Universal/PrintDxe/PrintDxe.uni b/MdeModulePkg/Universal/PrintDxe/PrintDxe.uni
index accb114..10f0ff8 100644
--- a/MdeModulePkg/Universal/PrintDxe/PrintDxe.uni
+++ b/MdeModulePkg/Universal/PrintDxe/PrintDxe.uni
@@ -1,9 +1,9 @@
 // /** @file
-// Print DXE driver that produces Print2 Protocol.
+// Print DXE driver that produces Print2 Protocols.
 //
-// This driver produces Print2 protocol layered on top of the PrintLib from the MdePkg.
+// This driver produces Print2 protocols layered on top of the PrintLib from the MdePkg.
 //
-// Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+// Copyright (c) 2009 - 2017, 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
@@ -16,7 +16,7 @@
 // **/
 
 
-#string STR_MODULE_ABSTRACT             #language en-US "Print DXE driver that produces Print2 Protocol"
+#string STR_MODULE_ABSTRACT             #language en-US "Print DXE driver that produces Print2 Protocols"
 
-#string STR_MODULE_DESCRIPTION          #language en-US "This driver produces Print2 protocol layered on top of the PrintLib from the MdePkg."
+#string STR_MODULE_DESCRIPTION          #language en-US "This driver produces Print2 protocols layered on top of the PrintLib from the MdePkg."
 
-- 
1.9.5.msysgit.0

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