openbios/openboot/obp/fm/lib/rstrace.fth

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• Hash : 1a08f436
  Author :
  Date : 2010-08-25T09:23:17
  

  change to well-formed svn directory structure. git-svn-id: svn://coreboot.org/openboot/trunk@2 4486e004-3823-0410-90c7-fb508cc143bb

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• obp/fm/lib/rstrace.fth

• id: @(#)rstrace.fth 2.5 04/03/30
  copyright: 1985-1990 Bradley Forthware
  copyright: 1991-2004 Sun Microsystems, Inc.  All Rights Reserved
  copyright: Use is subject to license terms.
  
  \ Forth stack backtrace
  \ Implements:
  \ (rstrace  ( low-adr high-adr -- )
  \    Shows the calling sequence that is stored in memory between the
  \    two addresses.  This is assumed to be a saved return stack image.
  \ \ rstrace  ( -- )
  \ \    Shows the calling sequence that is stored on the return stack,
  \ \    without destroying the return stack.
  
  decimal
  only forth also hidden also definitions
  headerless
  : .last-executed  ( ip -- )
     ip>token token@  ( acf )
     dup reasonable-ip?  if   .name   else   drop ." ??"   then
  ;
  : .traceline  ( ipaddr -- )
     push-hex
     dup reasonable-ip?
     if    dup .last-executed ip>token .caller   else  d# 17 u.r  then   cr
     pop-base
  ;
  : (rstrace  ( bottom-adr top-adr -- )
     do   i @  .traceline  exit? ?leave  /n +loop
  ;
  headers
  forth definitions
  \ : rstrace  ( -- )  \ Return stack backtrace
  \    rp@ rp0 @ u>  if
  \       ." Return Stack Underflow" rp0 @ rp!
  \    else
  \       rp0 @ rp@ (rstrace
  \    then
  \ ;
  only forth also definitions
  

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