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From: John Baldwin <jhb@FreeBSD.org>
Date: Thu, 19 Sep 2002 11:46:29 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/alpha/alpha db_trace.c src/sys/i386/i386
         db_trace.c src/sys/ia64/ia64 db_trace.c src/sys/powerpc/powerpc
         db_trace.c src/sys/sparc64/sparc64 db_trace.c src/sys/ddb ddb.h
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jhb         2002/09/19 11:46:29 PDT

  Modified files:
    sys/alpha/alpha      db_trace.c 
    sys/i386/i386        db_trace.c 
    sys/ia64/ia64        db_trace.c 
    sys/powerpc/powerpc  db_trace.c 
    sys/sparc64/sparc64  db_trace.c 
    sys/ddb              ddb.h 
  Log:
  Implement db_print_backtrace() if DDB is compiled into the kernel.  This
  MD function is just a wrapper around db_stack_trace_cmd() that prints out
  a backtrace of curthread.  Currently, this function is only implemented
  on i386 and alpha (and the alpha version isn't quite tested yet, will do
  that in a bit).  Other changes:
  
  - For i386, fix a bug in the raw frame address case.  The eip we extract
    from the passed in frame address does not match the frame we received.
    Thus, instead of printing a bogus frame with the wrong eip, go ahead
    and advance frame down to the same frame as the eip we are using.
  - For alpha, attempt to add a way of doing a raw trace for alpha.  Instead
    of passing a frame address in 'addr', pass in a pointer to a structure
    containing PC and KSP and use those to start the backtrace.  The alpha
    db_print_backtrace() uses asm to read in the current PC and KSP values
    into such a request.
  
  Tested on:      i386
  Requested by:   many
  
  Revision  Changes    Path
  1.13      +25 -2     src/sys/alpha/alpha/db_trace.c
  1.29      +3 -0      src/sys/ddb/ddb.h
  1.49      +9 -0      src/sys/i386/i386/db_trace.c
  1.12      +5 -0      src/sys/ia64/ia64/db_trace.c
  1.2       +4 -0      src/sys/powerpc/powerpc/db_trace.c
  1.13      +5 -0      src/sys/sparc64/sparc64/db_trace.c

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