legion/docs/readmes/README.dbx-hack

/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */
#pragma ident   "@(#)README.dbx-hack    1.3     07/05/30 SMI"

##
##      DBX Debugging information for Legion
##
## This explains how to use the dbx debugging hooks in legion
##

GETTING STARTED
---------------
 To get started, create a symlink from src/procs/sunsparc/debug/dbxrc to .dbxrc
 in the directory where sim is to be executed and run sim from within
 dbx.  E.g:

  % ln -s <path_to_legion_ws>/src/procs/sunsparc/debug/dbxrc .dbxrc
  % dbx
  (dbx) run -a 1.conf

 Note: control for executing debugging commands can be returned to dbx at
 anytime with ^C.

DEBUGGING COMMANDS
------------------

 simbreak <pc>

  Breakpoint on the given <pc>.  Breakpoints can be installed prior to
  simulation or during after transferring control to dbx with ^C .  The
  simulation is restarted with the conventional dbx "cont" command.

 simstep [n]

  Single step or <n> times single step the current CPU.

 simregs

  Dump the current CPU's registers.

 simmmuregs

  Dump the current CPU's MMU-specific registers.

 simdumpdtlb

  Dump the current CPU's D-TLB.

 simdumpitlb

  Dump the current CPU's I-TLB.

 simfocus [n]

  Print the currently 'focused' CPU, the target of the "simregs",
  "simmmuregs" etc commands or switch the 'focus' to the supplied id.
  Note: this command operates using legion-gids, NOT cpuids.

 simx <paddr> [n]

  Dump 8-bytes or dump <n> successive 8-bytes at the supplied physical
  address.

 simtrans <vaddr>

  If possible translate the supplied virtual address into a physical
  address using the current context and current contents of the I&D-TLBs.

 simdis <paddr> [n]

  Disassemble or disassemble <n> successive instructions at the supplied
  physical address.

 simscratch [n]

  If no argument is provided, this will print the scratchpad registers
  for the currently 'focused' CPU. Otherwise it will print the scratchpad
  registers of the CPU passed as an argument.
  Note: this command operates using legion-gids, NOT cpuids.

 simcmpregs

  Dump the current CMP registers.

 simshowbreak

  Display active simulation breakpoints.

 simdumpbreak <fname>

  Dump the defined breakpoints to a text file.

 simrestorebreak <fname>

  Restore previously defined and saved breakpoints from a text file.