i386ex: hangups during initialization
Angelo Fraietta
angelo at hunterlink.net.au
Wed Jun 20 22:18:42 UTC 2001
I thought that too, however, when I changed the CONFIGURE_MICROSECONDS_PER_TICK,
the problem went away until I upgraded the toolsets
Joel Sherrill wrote:
> Joel Sherrill wrote:
>
> > Angelo Fraietta wrote:
> >
> >> I had a similar bug a while ago. I set
> >> #define CONFIGURE_MICROSECONDS_PER_TICK 1000 /* 1 ms */
> >> to 5000 when I ran it on the 386 machine. After the soft float problem was
> >> fixed, I set it back to 1000, however, I was only running three tasks.
> >
> >
> > I could be wrong but I have to wonder what instruction is at the
> > address reported in the exception and what exception 13 is. Is
> > this happening on an FP instruction?
>
> Thanks to a private message from Erik Ivanenko, I was reminded that
> exception
> 13 is a general protection fault. So I would like to revise my guess to
> "the memory
> layout of your target board does not match that the BSP was designed for."
> Do an objdump -da on the executable and see what routine is at the
> offending address.
> That should flag things. I suspect it is assigning non-existent memory
> to the
> RTEMS Workspace or program heap.
>
> >
> > --joel
> >
> >
> >> Jürgen Zeller wrote:
> >>
> >>> hello everybody,
> >>>
> >>> I'm doing my first steps with RTEMS 4.5 and I have big
> >>> problems building RTEMS for i386ex.
> >>> During the initialization my system hangs up, so I tried to
> >>> find out, what the reason is. I've inserted many 'printk's'
> >>> in the rtems_executive_early function to see, how much code
> >>> gets processed.
> >>> But after a while I found out that the error is not constant at the
> >>> same time or function, it depends for example how much printk's I issue!
> >>> But in following illogical manner:
> >>> so more printk's I use so more code I get processed!
> >>>
> >>> I've checked my register settings, my linkcmds and my start.S often
> >>> but I can't find the error.
> >>>
> >>> Has anybody an idea what could go wrong in my application?
> >>> Could it be a Hardware problem?
> >>> I use a bootloader for downloading, could this be the reason? And why?
> >>>
> >>> I have no experience with RTEMS and I would be obliged for every tip I
> >>> get.
> >>>
> >>> RAM 0x00000000 .. 0x0003ffff
> >>> Flash 0x00080000 .. 0x000fffff
> >>>
> >>> here my printk - results
> >>>
> >>> rtems_initialize_executive_early: 001
> >>> rtems_initialize_executive_early: 002
> >>> rtems_initialize_executive_early: 003
> >>> rtems_initialize_executive_early: 003
> >>> rtems_initialize_executive_early: 003
> >>> rtems_initialize_executive_early: 003
> >>> rtems_initialize_executive_early: 003
> >>> rtems_initialize_executive_early: 003
> >>> rtems_initialize_executive_early: 003
> >>> rtems_initialize_executive_early: 003
> >>> rtems_initialize_executive_early: 003
> >>> rtems_initialize_executive_early: 003
> >>> rtems_initialize_executive_early: 004
> >>> rtems_initialize_executive_early: 005
> >>> rtems_initialize_executive_early: 006
> >>> rtems_initialize_executive_early: 007
> >>> rtems_initialize_executive_early: 008
> >>> rtems_initialize_executive_early: 009
> >>> rtems_initialize_executive_early: 010
> >>> rtems_initialize_executive_early: 011
> >>> rtems_initialize_executive_early: 012
> >>> rtems_initialize_executive_early: 013
> >>> rtems_initialize_executive_early: 014
> >>> ----------------------------------------------------------
> >>> Exception 13 caught at PC 87F66 by thread -1912602608
> >>> ----------------------------------------------------------
> >>> Processor execution context at time of the fault was :
> >>> ----------------------------------------------------------
> >>> EAX = B624 EBX = 46 ECX = B620 EDX = FFFFFFFF
> >>> ESI = 0 EDI = 200144 EBP = B5CC ESP = B5B0
> >>> ----------------------------------------------------------
> >>> Error code pushed by processor itself (if not 0) = 0
> >>> ----------------------------------------------------------
> >>> ************ FAULTY THREAD WILL BE DELETED **************
> >>> ----------------------------------------------------------
> >>> Exception 13 caught at PC 87F66 by thread -1912602608
> >>> ----------------------------------------------------------
> >>> Processor execution context at time of the fault was :
> >>> ----------------------------------------------------------
> >>> EAX = B624 EBX = 46 ECX = B620 EDX = FFFFFFFF
> >>> ESI = 0 EDI = 200144 EBP = B5CC ESP = B5B0
> >>> ----------------------------------------------------------
> >>> Error code pushed by processor itself (if not 0) = 0
> >>> ----------------------------------------------------------
> >>> ************ FAULTY THREAD WILL BE DELETED **************
> >>> ----------------------------------------------------------
> >>> Exception 13 caught at PC 87F66 by thread -1912602608
> >>> ----------------------------------------------------------
> >>> Processor execution context at time of the fault was :
> >>> ----------------------------------------------------------
> >>> EAX = B624 EBX = 46 ECX = B620 EDX = FFFFFFFF
> >>> ESI = 0 EDI = 200144 EBP = B5CC ESP = B5B0
> >>> ----------------------------------------------------------
> >>> Error code pushed by processor itself (if not 0) = 0
> >>> ----------------------------------------------------------
> >>> ************ FAULTY THREAD WILL BE DELETED **************
> >>> ----------------------------------------------------------
> >>> Exception 13 caught at PC 87F66 by thread -1912602608
> >>> ----------------------------------------------------------
> >>> Processor execution context at time of the fault was :
> >>> ----------------------------------------------------------
> >>> EAX = B624 EBX = 46 ECX = B620 EDX = FFFFFFFF
> >>> ESI = 0 EDI = 200144 EBP = B5CC ESP = B5B0
> >>> ----------------------------------------------------------
> >>> Error code pushed by processor itself (if not 0) = 0
> >>> ----------------------------------------------------------
> >>> ************ FAULTY THREAD WILL BE DELETED **************
> >>> ----------------------------------------------------------
> >>> Exception 13 caught at PC 87F66 by thread -1912602608
> >>> ----------------------------------------------------------
> >>> Processor execution context at time of the fault was :
> >>> ----------------------------------------------------------
> >>> EAX = B624 EBX = 46 ECX = B620 EDX = FFFFFFFF
> >>> ESI = 0 EDI = 200144 EBP = B5CC ESP = B5B0
> >>> ----------------------------------------------------------
> >>> Error code pushed by processor itself (if not 0) = 0
> >>> ----------------------------------------------------------
> >>> ************ FAULTY THREAD WILL BE DELETED **************
> >>> ----------------------------------------------------------
> >>>
> >>> thanks a lot for your help!
> >>>
> >>> --
> >>> Jürgen Zeller
> >>> Entwicklung Software
> >>> TVI Lederer GmbH & Co KG
> >>> Industriestr. 4, 93161 Sinzing
> >>> Tel. 0941-3073761 - Fax 0941-3073737
> >>
> >> --
> >> Angelo Fraietta
> >>
> >> PO Box 859
> >> Hamilton NSW 2303
> >>
> >> Home Page
> >>
> >> http://users.hunterlink.net.au/~maaaf/
> >>
> >> There are those who seek knowledge for the sake of knowledge - that is
> >> CURIOSITY
> >> There are those who seek knowledge to be known by others - that is VANITY
> >> There are those who seek knowledge in order to serve - that is LOVE
> >> Bernard of Clairvaux (1090 - 1153)
> >
--
Angelo Fraietta
PO Box 859
Hamilton NSW 2303
Home Page
http://users.hunterlink.net.au/~maaaf/
There are those who seek knowledge for the sake of knowledge - that is CURIOSITY
There are those who seek knowledge to be known by others - that is VANITY
There are those who seek knowledge in order to serve - that is LOVE
Bernard of Clairvaux (1090 - 1153)
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