[Bug tapsets/3668] New: Add hex dump function for arbitrary buffers

["mmlnx at us dot ibm dot com" <sourceware-bugzilla at sourceware dot org>]

Need a function that prints the contents of an arbitrary buffer in hex format,
something like the following:  

print_hexdump(bufptr:long, len:long)

Example output:

BFFFF6C0 : 03 00 00 00  D4 86 04 08 - 00 00 00 00  F5 86 04 08 ................
BFFFF6B0 : 03 00 00 00  F4 F6 FF BF - 04 F7 FF BF  2C 58 01 40 ............,X.@
BFFFF6A0 : 60 53 01 40  24 8F 04 08 - C8 F6 FF BF  04 55 01 42 `S.@$........U.B
BFFFF690 : 14 0A 13 42  70 C6 00 40 - 10 00 00 00  14 0A 13 42 ...Bp..@.......B

It needs to gracefully handle:
- pointers to user and kernel buffers
- requests to dump bad memory locations
- requests to dump an excessive amount of memory, perhaps restricted by a
MAXHEXDUMP define

This capability would be very useful, for example, in debugging situations where
bad data is suspected of being read or written.

-- 
           Summary: Add hex dump function for arbitrary buffers
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tapsets
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: mmlnx at us dot ibm dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=3668

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