xref: /illumos-gate/usr/src/boot/efi/include/Protocol/Print2.h (revision f334afcf)

/** @file

  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 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __PPRINT2_H__
#define __PPRINT2_H__

#define EFI_PRINT2_PROTOCOL_GUID  \
  { 0xf05976ef, 0x83f1, 0x4f3d, { 0x86, 0x19, 0xf7, 0x59, 0x5d, 0x41, 0xe5, 0x38 } }

//
// Forward reference for pure ANSI compatability
//
typedef struct _EFI_PRINT2_PROTOCOL EFI_PRINT2_PROTOCOL;

/**
  Produces a Null-terminated Unicode string in an output buffer based on
  a Null-terminated Unicode format string and a BASE_LIST argument list.

  Produces a Null-terminated Unicode string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The Unicode string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list specified by Marker based on the
  contents of the format string.
  The number of Unicode characters in the produced output buffer is returned not including
  the Null-terminator.

  If StartOfBuffer is not aligned on a 16-bit boundary, then ASSERT().
  If FormatString is not aligned on a 16-bit boundary, then ASSERT().

  If BufferSize > 1 and StartOfBuffer is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If BufferSize > 1 and FormatString is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If PcdMaximumUnicodeStringLength is not zero, and BufferSize >
  (PcdMaximumUnicodeStringLength * sizeof (CHAR16) + 1), then ASSERT(). Also, the output
  buffer is unmodified and 0 is returned.
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than
  PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator, then
  ASSERT(). Also, the output buffer is unmodified and 0 is returned.

  If BufferSize is 0 or 1, then the output buffer is unmodified and 0 is returned.

  @param  StartOfBuffer   A pointer to the output buffer for the produced Null-terminated
                          Unicode string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    A Null-terminated Unicode format string.
  @param  Marker          BASE_LIST marker for the variable argument list.

  @return The number of Unicode characters in the produced output buffer not including the
          Null-terminator.

**/
typedef
UINTN
(EFIAPI *UNICODE_BS_PRINT)(
  OUT CHAR16        *StartOfBuffer,
  IN  UINTN         BufferSize,
  IN  CONST CHAR16  *FormatString,
  IN  BASE_LIST     Marker
  );

/**
  Produces a Null-terminated Unicode string in an output buffer based on a Null-terminated
  Unicode format string and variable argument list.

  This function is similar as snprintf_s defined in C11.

  Produces a Null-terminated Unicode string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The Unicode string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list based on the contents of the format string.
  The number of Unicode characters in the produced output buffer is returned not including
  the Null-terminator.

  If StartOfBuffer is not aligned on a 16-bit boundary, then ASSERT().
  If FormatString is not aligned on a 16-bit boundary, then ASSERT().

  If BufferSize > 1 and StartOfBuffer is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If BufferSize > 1 and FormatString is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If PcdMaximumUnicodeStringLength is not zero, and BufferSize >
  (PcdMaximumUnicodeStringLength * sizeof (CHAR16) + 1), then ASSERT(). Also, the output
  buffer is unmodified and 0 is returned.
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than
  PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator, then
  ASSERT(). Also, the output buffer is unmodified and 0 is returned.

  If BufferSize is 0 or 1, then the output buffer is unmodified and 0 is returned.

  @param  StartOfBuffer   A pointer to the output buffer for the produced Null-terminated
                          Unicode string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    A Null-terminated Unicode format string.
  @param  ...             Variable argument list whose contents are accessed based on the
                          format string specified by FormatString.

  @return The number of Unicode characters in the produced output buffer not including the
          Null-terminator.

**/
typedef
UINTN
(EFIAPI *UNICODE_S_PRINT)(
  OUT CHAR16        *StartOfBuffer,
  IN  UINTN         BufferSize,
  IN  CONST CHAR16  *FormatString,
  ...
  );

/**
  Produces a Null-terminated Unicode string in an output buffer based on a Null-terminated
  ASCII format string and a BASE_LIST argument list.

  Produces a Null-terminated Unicode string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The Unicode string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list specified by Marker based on the
  contents of the format string.
  The number of Unicode characters in the produced output buffer is returned not including
  the Null-terminator.

  If StartOfBuffer is not aligned on a 16-bit boundary, then ASSERT().

  If BufferSize > 1 and StartOfBuffer is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If BufferSize > 1 and FormatString is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If PcdMaximumUnicodeStringLength is not zero, and BufferSize >
  (PcdMaximumUnicodeStringLength * sizeof (CHAR16) + 1), then ASSERT(). Also, the output
  buffer is unmodified and 0 is returned.
  If PcdMaximumAsciiStringLength is not zero, and FormatString contains more than
  PcdMaximumAsciiStringLength Ascii characters not including the Null-terminator, then
  ASSERT(). Also, the output buffer is unmodified and 0 is returned.

  If BufferSize is 0 or 1, then no output buffer is produced and 0 is returned.

  @param  StartOfBuffer   A pointer to the output buffer for the produced Null-terminated
                          Unicode string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    A Null-terminated ASCII format string.
  @param  Marker          BASE_LIST marker for the variable argument list.

  @return The number of Unicode characters in the produced output buffer not including the
          Null-terminator.

**/
typedef
UINTN
(EFIAPI *UNICODE_BS_PRINT_ASCII_FORMAT)(
  OUT CHAR16       *StartOfBuffer,
  IN  UINTN        BufferSize,
  IN  CONST CHAR8  *FormatString,
  IN  BASE_LIST    Marker
  );

/**
  Produces a Null-terminated Unicode string in an output buffer based on a Null-terminated
  ASCII format string and  variable argument list.

  This function is similar as snprintf_s defined in C11.

  Produces a Null-terminated Unicode string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The Unicode string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list based on the contents of the
  format string.
  The number of Unicode characters in the produced output buffer is returned not including
  the Null-terminator.

  If StartOfBuffer is not aligned on a 16-bit boundary, then ASSERT().

  If BufferSize > 1 and StartOfBuffer is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If BufferSize > 1 and FormatString is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If PcdMaximumUnicodeStringLength is not zero, and BufferSize >
  (PcdMaximumUnicodeStringLength * sizeof (CHAR16) + 1), then ASSERT(). Also, the output
  buffer is unmodified and 0 is returned.
  If PcdMaximumAsciiStringLength is not zero, and FormatString contains more than
  PcdMaximumAsciiStringLength Ascii characters not including the Null-terminator, then
  ASSERT(). Also, the output buffer is unmodified and 0 is returned.

  If BufferSize is 0 or 1, then no output buffer is produced and 0 is returned.

  @param  StartOfBuffer   A pointer to the output buffer for the produced Null-terminated
                          Unicode string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    A Null-terminated ASCII format string.
  @param  ...             Variable argument list whose contents are accessed based on the
                          format string specified by FormatString.

  @return The number of Unicode characters in the produced output buffer not including the
          Null-terminator.

**/
typedef
UINTN
(EFIAPI *UNICODE_S_PRINT_ASCII_FORMAT)(
  OUT CHAR16       *StartOfBuffer,
  IN  UINTN        BufferSize,
  IN  CONST CHAR8  *FormatString,
  ...
  );

/**
  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.
  This function returns the number of Unicode characters in Buffer, not including
  the Null-terminator.
  If the conversion contains more than Width characters, this function returns
  the first Width characters in the conversion, along with the total number of characters in the conversion.
  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 both COMMA_TYPE and RADIX_HEX are set in Flags, then ASSERT().
  If Buffer is NULL, then ASSERT().
  If Buffer is not aligned on a 16-bit boundary, then ASSERT().
  If unsupported bits are set in Flags, then ASSERT().
  If both COMMA_TYPE and RADIX_HEX are set in Flags, then ASSERT().
  If Width >= MAXIMUM_VALUE_CHARACTERS, then ASSERT()

  @param  Buffer  The pointer to the output buffer for the produced Null-terminated
                  Unicode string.
  @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.

  @return The number of Unicode characters in Buffer not including the Null-terminator.

**/
typedef
UINTN
(EFIAPI *UNICODE_VALUE_TO_STRING)(
  IN OUT CHAR16  *Buffer,
  IN UINTN       Flags,
  IN INT64       Value,
  IN UINTN       Width
  );

/**
  Produces a Null-terminated ASCII string in an output buffer based on a Null-terminated
  ASCII format string and a BASE_LIST argument list.

  Produces a Null-terminated ASCII string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The ASCII string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list specified by Marker based on
  the contents of the format string.
  The number of ASCII characters in the produced output buffer is returned not including
  the Null-terminator.

  If BufferSize > 0 and StartOfBuffer is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If BufferSize > 0 and FormatString is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If PcdMaximumAsciiStringLength is not zero, and BufferSize >
  (PcdMaximumAsciiStringLength * sizeof (CHAR8)), then ASSERT(). Also, the output buffer
  is unmodified and 0 is returned.
  If PcdMaximumAsciiStringLength is not zero, and FormatString contains more than
  PcdMaximumAsciiStringLength Ascii characters not including the Null-terminator, then
  ASSERT(). Also, the output buffer is unmodified and 0 is returned.

  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  @param  StartOfBuffer   A pointer to the output buffer for the produced Null-terminated
                          ASCII string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    A Null-terminated ASCII format string.
  @param  Marker          BASE_LIST marker for the variable argument list.

  @return The number of ASCII characters in the produced output buffer not including the
          Null-terminator.

**/
typedef
UINTN
(EFIAPI *ASCII_BS_PRINT)(
  OUT CHAR8         *StartOfBuffer,
  IN  UINTN         BufferSize,
  IN  CONST CHAR8   *FormatString,
  IN  BASE_LIST     Marker
  );

/**
  Produces a Null-terminated ASCII string in an output buffer based on a Null-terminated
  ASCII format string and  variable argument list.

  This function is similar as snprintf_s defined in C11.

  Produces a Null-terminated ASCII string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The ASCII string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list based on the contents of the
  format string.
  The number of ASCII characters in the produced output buffer is returned not including
  the Null-terminator.

  If BufferSize > 0 and StartOfBuffer is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If BufferSize > 0 and FormatString is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If PcdMaximumAsciiStringLength is not zero, and BufferSize >
  (PcdMaximumAsciiStringLength * sizeof (CHAR8)), then ASSERT(). Also, the output buffer
  is unmodified and 0 is returned.
  If PcdMaximumAsciiStringLength is not zero, and FormatString contains more than
  PcdMaximumAsciiStringLength Ascii characters not including the Null-terminator, then
  ASSERT(). Also, the output buffer is unmodified and 0 is returned.

  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  @param  StartOfBuffer   A pointer to the output buffer for the produced Null-terminated
                          ASCII string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    A Null-terminated ASCII format string.
  @param  ...             Variable argument list whose contents are accessed based on the
                          format string specified by FormatString.

  @return The number of ASCII characters in the produced output buffer not including the
          Null-terminator.

**/
typedef
UINTN
(EFIAPI *ASCII_S_PRINT)(
  OUT CHAR8        *StartOfBuffer,
  IN  UINTN        BufferSize,
  IN  CONST CHAR8  *FormatString,
  ...
  );

/**
  Produces a Null-terminated ASCII string in an output buffer based on a Null-terminated
  Unicode format string and a BASE_LIST argument list.

  Produces a Null-terminated ASCII string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The ASCII string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list specified by Marker based on
  the contents of the format string.
  The number of ASCII characters in the produced output buffer is returned not including
  the Null-terminator.

  If FormatString is not aligned on a 16-bit boundary, then ASSERT().

  If BufferSize > 0 and StartOfBuffer is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If BufferSize > 0 and FormatString is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If PcdMaximumAsciiStringLength is not zero, and BufferSize >
  (PcdMaximumAsciiStringLength * sizeof (CHAR8)), then ASSERT(). Also, the output buffer
  is unmodified and 0 is returned.
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than
  PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator, then
  ASSERT(). Also, the output buffer is unmodified and 0 is returned.

  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  @param  StartOfBuffer   A pointer to the output buffer for the produced Null-terminated
                          ASCII string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    A Null-terminated Unicode format string.
  @param  Marker          BASE_LIST marker for the variable argument list.

  @return The number of ASCII characters in the produced output buffer not including the
          Null-terminator.

**/
typedef
UINTN
(EFIAPI *ASCII_BS_PRINT_UNICODE_FORMAT)(
  OUT CHAR8         *StartOfBuffer,
  IN  UINTN         BufferSize,
  IN  CONST CHAR16  *FormatString,
  IN  BASE_LIST     Marker
  );

/**
  Produces a Null-terminated ASCII string in an output buffer based on a Null-terminated
  Unicode format string and  variable argument list.

  This function is similar as snprintf_s defined in C11.

  Produces a Null-terminated ASCII string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The ASCII string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list based on the contents of the
  format string.
  The number of ASCII characters in the produced output buffer is returned not including
  the Null-terminator.

  If FormatString is not aligned on a 16-bit boundary, then ASSERT().

  If BufferSize > 0 and StartOfBuffer is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If BufferSize > 0 and FormatString is NULL, then ASSERT(). Also, the output buffer is
  unmodified and 0 is returned.
  If PcdMaximumAsciiStringLength is not zero, and BufferSize >
  (PcdMaximumAsciiStringLength * sizeof (CHAR8)), then ASSERT(). Also, the output buffer
  is unmodified and 0 is returned.
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than
  PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator, then
  ASSERT(). Also, the output buffer is unmodified and 0 is returned.

  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  @param  StartOfBuffer   A pointer to the output buffer for the produced Null-terminated
                          ASCII string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    A Null-terminated Unicode format string.
  @param  ...             Variable argument list whose contents are accessed based on the
                          format string specified by FormatString.

  @return The number of ASCII characters in the produced output buffer not including the
          Null-terminator.

**/
typedef
UINTN
(EFIAPI *ASCII_S_PRINT_UNICODE_FORMAT)(
  OUT CHAR8         *StartOfBuffer,
  IN  UINTN         BufferSize,
  IN  CONST CHAR16  *FormatString,
  ...
  );

/**
  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.
  The number of ASCII characters in Buffer is returned not including the Null-terminator.
  If the conversion contains more than Width characters, then only the first Width
  characters are returned, and the total number of characters required to perform
  the conversion is returned.
  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 NULL, then ASSERT().
  If unsupported bits are set in Flags, then ASSERT().
  If both COMMA_TYPE and RADIX_HEX are set in Flags, then ASSERT().
  If Width >= MAXIMUM_VALUE_CHARACTERS, then ASSERT()

  @param  Buffer  The pointer to the output buffer for the produced Null-terminated
                  ASCII string.
  @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.

  @return The number of ASCII characters in Buffer not including the Null-terminator.

**/
typedef
UINTN
(EFIAPI *ASCII_VALUE_TO_STRING)(
  OUT CHAR8      *Buffer,
  IN  UINTN      Flags,
  IN  INT64      Value,
  IN  UINTN      Width
  );

struct _EFI_PRINT2_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          UnicodeValueToString;
  ASCII_BS_PRINT                   AsciiBSPrint;
  ASCII_S_PRINT                    AsciiSPrint;
  ASCII_BS_PRINT_UNICODE_FORMAT    AsciiBSPrintUnicodeFormat;
  ASCII_S_PRINT_UNICODE_FORMAT     AsciiSPrintUnicodeFormat;
  ASCII_VALUE_TO_STRING            AsciiValueToString;
};

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 an error would be returned, then the function will 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