1 03/27/85 save_history_registers
 2 
 3 Syntax as a command:  save_history_registers {state} {-control_args}
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 5 
 6 Function:  allows a user to save processor history registers upon each
 7 occurrence of a signalable fault in the signalers stack frame.  By
 8 default, the history registers are not saved, and the history register
 9 block in the signalers stack frame is set to all zeros.
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11 
12 Arguments:
13 state
14    can be either "on" or "off."  If state is not specified, it is off.
15 
16 
17 Control arguments:
18 -priv
19    specifies manipulation of the per-system state by directing the
20    state and -print arguments to operate on the per-system history
21    register save switch, wired_hardcore_data$global_hregs.  When set,
22    this switch causes all processes to save their history registers
23    upon each occurrence of a signalable fault in the signalers stack
24    frame.  If -priv is not specified, then the state and -print
25    arguments operate on pds$save_history_regs, the per-process history
26    register save switch of the process executing this command.
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28 
29 -print, -pr
30    displays the current state of the history register save switch if
31    the state argument is not specified; if the state argument is
32    specified, the state of the switch is displayed before the new state
33    is applied.
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35 
36 Access required:  When -priv is used, hphcs_ access is required.