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#### 30.1.2 IPA Protocol Commands

The spaces in each command are delimiters to ease reading this commands specification. They don’t exist in real commands.

‘`FastTrace:tracepoint_object gdb_jump_pad_head`’

  Installs a new fast tracepoint described by tracepoint_object (see tracepoint object). The gdb_jump_pad_head, 8-byte long, is the head of jumppad, which is used to jump to data collection routine in IPA finally.

  Replies:

  ‘`OK target_address gdb_jump_pad_head fjump_size fjump`’

    target_address is address of tracepoint in the inferior. The gdb_jump_pad_head is updated head of jumppad. Both of target_address and gdb_jump_pad_head are 8-byte long. The fjump contains a sequence of instructions jump to jumppad entry. The fjump_size, 4-byte long, is the size of fjump.

  ‘`E NN`’

    for an error

‘`close`’

  Closes the in-process agent. This command is sent when GDB or GDBserver is about to kill inferiors.

‘`qTfSTM`’

  See qTfSTM.

‘`qTsSTM`’

  See qTsSTM.

‘`qTSTMat`’

  See qTSTMat.

‘`probe_marker_at:address`’

  Asks in-process agent to probe the marker at address.

  Replies:

  ‘`E NN`’

    for an error

‘`unprobe_marker_at:address`’

  Asks in-process agent to unprobe the marker at address.