+ The Print Library functions provide a simple means to produce formatted output \r
+ strings. Many of the output functions use a format string to describe how to \r
+ format the output of variable arguments. The format string consists of normal \r
+ text and argument descriptors. There are no restrictions for how the normal \r
+ text and argument descriptors can be mixed. The following end of line(EOL) \r
+ translations must be performed on the contents of the format string:\r
+ \r
+ - '\\r' is translated to '\\r'\r
+ - '\\r\\n' is translated to '\\r\\n'\r
+ - '\\n' is translated to '\\r\\n' \r
+ - '\\n\\r' is translated to '\\r\\n'\r
+ \r
+ This does not follow the ANSI C standard for sprint(). The format of argument \r
+ descriptors is described below. The ANSI C standard for sprint() has been \r
+ followed for some of the format types, and has not been followed for others. \r
+ The exceptions are noted below.\r
+\r
+ %[flags][width][.precision]type\r
+\r
+ [flags]:\r
+ - - \r
+ - The field is left justified. If not flag is not specified, then the \r
+ field is right justified.\r
+ - space \r
+ - Prefix a space character to a number. Only valid for types X, x, and d.\r
+ - + \r
+ - Prefix a plus character to a number. Only valid for types X, x, and d. \r
+ If both space and + are specified, then space is ignored.\r
+ - 0\r
+ - Pad with 0 characters to the left of a number. Only valid for types \r
+ X, x, and d.\r
+ - ,\r
+ - Place a comma every 3rd digit of the number. Only valid for type d.\r
+ If 0 is also specified, then 0 is ignored.\r
+ - L, l\r
+ - The number being printed is size UINT64. Only valid for types X, x, and d.\r
+ If this flag is not specified, then the number being printed is size int.\r
+ - NOTE: All invalid flags are ignored.\r
+\r
+ [width]:\r
+\r
+ - *\r
+ - The width of the field is specified by a UINTN argument in the \r
+ argument list.\r
+ - number\r
+ - The number specified as a decimal value represents the width of \r
+ the field.\r
+ - NOTE: If [width] is not specified, then a field width of 0 is assumed.\r
+\r
+ [.precision]:\r
+\r
+ - *\r
+ - The precision of the field is specified by a UINTN argument in the \r
+ argument list.\r
+ - number\r
+ - The number specified as a decimal value represents the precision of \r
+ the field.\r
+ - NOTE: If [.precision] is not specified, then a precision of 0 is assumed.\r
+\r
+ type:\r
+\r
+ - %\r
+ - Print a %%.\r
+ - c\r
+ - The argument is a Unicode character. ASCII characters can be printed \r
+ using this type too by making sure bits 8..15 of the argument are set to 0.\r
+ - x\r
+ - The argument is an unsigned hexadecimal number. The characters used are 0..9 and \r
+ A..F. If the flag 'L' is not specified, then the argument is assumed \r
+ to be size int. This does not follow ANSI C.\r
+ - X\r
+ - The argument is an unsigned hexadecimal number and the number is padded with \r
+ zeros. This is equivalent to a format string of "0x". If the flag \r
+ 'L' is not specified, then the argument is assumed to be size int. \r
+ This does not follow ANSI C.\r
+ - d\r
+ - The argument is a signed decimal number. If the flag 'L' is not specified, \r
+ then the argument is assumed to be size int. \r
+ - u\r
+ - The argument is a unsigned decimal number. If the flag 'L' is not specified, \r
+ then the argument is assumed to be size int.\r
+ - p\r
+ - The argument is a pointer that is a (VOID *), and it is printed as an \r
+ unsigned hexadecimal number The characters used are 0..9 and A..F.\r
+ - a\r
+ - The argument is a pointer to an ASCII string. \r
+ This does not follow ANSI C.\r
+ - S, s\r
+ - The argument is a pointer to a Unicode string. \r
+ This does not follow ANSI C.\r
+ - g\r
+ - The argument is a pointer to a GUID structure. The GUID is printed \r
+ in the format XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX. \r
+ This does not follow ANSI C.\r
+ - t\r
+ - The argument is a pointer to an EFI_TIME structure. The time and \r
+ date are printed in the format "mm/dd/yyyy hh:mm" where mm is the \r
+ month zero padded, dd is the day zero padded, yyyy is the year zero \r
+ padded, hh is the hour zero padded, and mm is minutes zero padded. \r
+ This does not follow ANSI C. \r
+ - r\r
+ - The argument is a RETURN_STATUS value. This value is converted to \r
+ a string following the table below. This does not follow ANSI C. \r
+ - RETURN_SUCCESS \r
+ - "Success"\r
+ - RETURN_LOAD_ERROR \r
+ - "Load Error"\r
+ - RETURN_INVALID_PARAMETER \r
+ - "Invalid Parameter"\r
+ - RETURN_UNSUPPORTED \r
+ - "Unsupported"\r
+ - RETURN_BAD_BUFFER_SIZE \r
+ - "Bad Buffer Size"\r
+ - RETURN_BUFFER_TOO_SMALL \r
+ - "Buffer Too Small"\r
+ - RETURN_NOT_READY \r
+ - "Not Ready"\r
+ - RETURN_DEVICE_ERROR \r
+ - "Device Error"\r
+ - RETURN_WRITE_PROTECTED \r
+ - "Write Protected"\r
+ - RETURN_OUT_OF_RESOURCES \r
+ - "Out of Resources"\r
+ - RETURN_VOLUME_CORRUPTED \r
+ - "Volume Corrupt"\r
+ - RETURN_VOLUME_FULL \r
+ - "Volume Full"\r
+ - RETURN_NO_MEDIA \r
+ - "No Media"\r
+ - RETURN_MEDIA_CHANGED \r
+ - "Media changed"\r
+ - RETURN_NOT_FOUND \r
+ - "Not Found"\r
+ - RETURN_ACCESS_DENIED \r
+ - "Access Denied"\r
+ - RETURN_NO_RESPONSE \r
+ - "No Response"\r
+ - RETURN_NO_MAPPING \r
+ - "No mapping"\r
+ - RETURN_TIMEOUT \r
+ - "Time out"\r
+ - RETURN_NOT_STARTED \r
+ - "Not started"\r
+ - RETURN_ALREADY_STARTED \r
+ - "Already started"\r
+ - RETURN_ABORTED \r
+ - "Aborted"\r
+ - RETURN_ICMP_ERROR \r
+ - "ICMP Error"\r
+ - RETURN_TFTP_ERROR \r
+ - "TFTP Error"\r
+ - RETURN_PROTOCOL_ERROR \r
+ - "Protocol Error"\r
+ - RETURN_WARN_UNKNOWN_GLYPH \r
+ - "Warning Unknown Glyph"\r
+ - RETURN_WARN_DELETE_FAILURE \r
+ - "Warning Delete Failure"\r
+ - RETURN_WARN_WRITE_FAILURE \r
+ - "Warning Write Failure"\r
+ - RETURN_WARN_BUFFER_TOO_SMALL \r
+ - "Warning Buffer Too Small"\r
+\r