Parameter Format Notation

The Parameter portion of a tracepoint listing typically includes both fixed descriptive ASCII strings and variable format descriptors. The following list enumerates the classes of format descriptors that are encountered in the tracepoint listings:

• A
  Output a segmented (16:16) address (32 bits)
  %B
  Output a byte (8 bits) of data
  %D
  Output A double word (32 bits) of data
  %F
  Output a flat (0:32) address (32 bits)
  %Q
  Output a quad word (64 bits) of data
  %S
  Output an ASCIIZ string (which is "n" bytes terminated by 00h)
  %U
  Format the remainder of the trace record as a sequence of bytes
  %W
  Output a word (16 bits) of data
  %X
  Output the major event code
  %Y
  Output the minor event code

  A number preceding one of the above specifies a sequence of that type.

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