Sorry but what do you mean by "check what the string parameter points to"? I can insert the breakpoint but i don't understand what is the string parameter.<br><br><br>Best,<br>JM<br><br><div class="gmail_quote">
On Wed, Jun 16, 2010 at 7:15 PM, Jiri Gaisler <span dir="ltr"><<a href="mailto:jiri@gaisler.com">jiri@gaisler.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<br>
Everything in RTEMS is a task, either the init task or created 'secondary'<br>
tasks. You might want to set CONFIGURE_INIT_TASK_STACK_SIZE to some higher<br>
value if your auto-code uses a lot of stack space ...<br>
<br>
But the proper way to debug this is to put a breakpoint on the offending<br>
printf, and check what the string parameter points to. If it is not your<br>
intended string ("B\n"), it might have been overwritten in memory. Put a<br>
watch point on the address and check when it is written. Alternatively,<br>
the pointer to the string might have been overwritten, which can be<br>
tracked by similar means ...<br>
<br>
Jiri.<br>
<div class="im"><br>
Joćo Rasta wrote:<br>
> It is not a task, just a simple function call. I passed this call to the<br>
> first thing in the void POSIX_Init() and the same happens. No matter<br>
> what i pass to printf or puts it allways writes the same if this<br>
> function is implemented on the autocode *.c files..<br>
><br>
><br>
> Best,<br>
> JM<br>
><br>
> On Wed, Jun 16, 2010 at 6:31 PM, Jiri Gaisler <<a href="mailto:jiri@gaisler.com">jiri@gaisler.com</a><br>
</div><div class="im">> <mailto:<a href="mailto:jiri@gaisler.com">jiri@gaisler.com</a>>> wrote:<br>
><br>
><br>
> Each task is allocated a certain amount of stack space - how much<br>
> have you allocated to your auto-code one? You might try the RTEMS<br>
> stack checker to detect a stack overflow ...<br>
><br>
> Jiri.<br>
><br>
> Joćo Rasta wrote:<br>
> > How can i be sure?<br>
> ><br>
> > The fact is that if i read the contents of all the memory space with<br>
> > grmon, they are not zero.. And i have "washed" prior to load the<br>
> > application.<br>
> ><br>
> ><br>
> > Best,<br>
> > JM<br>
> ><br>
> > On Wed, Jun 16, 2010 at 6:11 PM, Jiri Gaisler <<a href="mailto:jiri@gaisler.com">jiri@gaisler.com</a><br>
> <mailto:<a href="mailto:jiri@gaisler.com">jiri@gaisler.com</a>><br>
</div><div class="im">> > <mailto:<a href="mailto:jiri@gaisler.com">jiri@gaisler.com</a> <mailto:<a href="mailto:jiri@gaisler.com">jiri@gaisler.com</a>>>> wrote:<br>
> ><br>
> ><br>
> ><br>
> > Joćo Rasta wrote:<br>
> > > Just an update:<br>
> > ><br>
> > > If i do fflush(stdout) inside the test function, the application<br>
> > > crashes. Also, no matter what i put in printf, it allways<br>
> prints the<br>
> > > same characters, but it detects the \n correctly.. I don't<br>
> see if this<br>
> > > can be related to the compiler..<br>
> ><br>
> > Sounds to me like you have blown the stack or run out of<br>
> memory ...<br>
> ><br>
> > Jiri.<br>
> ><br>
> > ><br>
> > ><br>
> > > Best,<br>
> > > JM<br>
> > ><br>
> > > On Wed, Jun 16, 2010 at 4:56 PM, Joel Sherrill<br>
> > > <<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>>><br>
</div><div><div></div><div class="h5">> > <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>><br>
> > <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>>>>> wrote:<br>
> > ><br>
> > > On 06/16/2010 10:52 AM, Joćo Rasta wrote:<br>
> > ><br>
> > > Hi,<br>
> > ><br>
> > > No, autocode requires the real-time workbench only,<br>
> it is<br>
> > quite<br>
> > > straightforward to generate the code.<br>
> > ><br>
> > > I didn't fully understood your question. Anyway, i have<br>
> > tried to<br>
> > > compile the application with gcc and runs fine on<br>
> linux so it<br>
> > > should run on rtems with the apropriate modifications.<br>
> > However,<br>
> > > when i printf("test\n") within the library finction, it<br>
> > returns<br>
> > > strange characters, which doesn't happen in the<br>
> function that<br>
> > > calls the library function..<br>
> > ><br>
> > > Is it including stdio.h? I have seen some targets where<br>
> if you<br>
> > > don't the variable<br>
> > > arguments stuff gets confused.<br>
> > ><br>
> > > Is the generated code warning free?<br>
> > ><br>
> > ><br>
> > > I suspect of a compilation flag/option i may be<br>
> missing on the<br>
> > > library. Do you have any idea?<br>
> > ><br>
> > > As long as it is compiled the same as the rest of the<br>
> app, it<br>
> > should<br>
> > > be ok.<br>
> > ><br>
> > > Also, i don't need any rtems<br>
> primitives/configurations on the<br>
> > > library functions right? I'm assuimng It is enough<br>
> to have the<br>
> > > rtems configuration on the "main" file.<br>
> > ><br>
> > > Right.<br>
> > ><br>
> > > Can you print from other tasks?<br>
> > ><br>
> > > --joel<br>
> > ><br>
> > ><br>
> > > Best,<br>
> > > JM<br>
> > ><br>
> > ><br>
> > ><br>
> > ><br>
> > > On Wed, Jun 16, 2010 at 4:42 PM, Joel Sherrill<br>
> > > <<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>><br>
> > <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>>><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>><br>
> > <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>>>><br>
> > > <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>><br>
> > <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>>><br>
> > > <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>><br>
> > <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a><br>
> <mailto:<a href="mailto:joel.sherrill@oarcorp.com">joel.sherrill@oarcorp.com</a>>>>>> wrote:<br>
> > ><br>
> > > On 06/16/2010 10:38 AM, Joćo Rasta wrote:<br>
> > ><br>
> > > Hi,<br>
> > ><br>
> > > I'm having trouble running an rtems application<br>
> > that uses<br>
> > > code<br>
> > > generated from matlab using autocode. It all<br>
> goes well<br>
> > > until a<br>
> > > function of this library is called: printfs<br>
> return<br>
> > awkward<br>
> > > characters and then the application crashes.<br>
> > ><br>
> > > I have seen references to this before. Is this<br>
> hard to<br>
> > do? Are<br>
> > > there instructions?<br>
> > > Standard glue code, etc.<br>
> > ><br>
> > > 1) Is there any obvious reason to why printfs of<br>
> > the autocode<br>
> > > generated functions are not working properly?<br>
> They are<br>
> > > compiled with sparc-rtems-gcc, as the main code.<br>
> > ><br>
> > > 2) Are there any special flags needed to be<br>
> passed<br>
> > to the<br>
> > > compiler in order to link other libraries? Or<br>
> some<br>
> > rtems<br>
> > > configuration..<br>
> > ><br>
> > > Is there any chance it is printing floating point<br>
> > numbers from a<br>
> > > non-FP task?<br>
> > ><br>
> > ><br>
> > > Best,<br>
> > > JM<br>
> > ><br>
> > ><br>
> > ><br>
> > > -- Joel Sherrill, Ph.D. Director of<br>
> > Research&<br>
> > > Development<br>
> > > joel.sherrill@OARcorp.com On-Line Applications<br>
> > Research<br>
> > > Ask me about RTEMS: a free RTOS Huntsville AL 35805<br>
> > > Support Available (256) 722-9985<br>
> > ><br>
> > ><br>
> > ><br>
> > ><br>
> > ><br>
> > > --<br>
> > > Joel Sherrill, Ph.D. Director of Research&<br>
> > Development<br>
> > > joel.sherrill@OARcorp.com On-Line Applications<br>
> Research<br>
> > > Ask me about RTEMS: a free RTOS Huntsville AL 35805<br>
> > > Support Available (256) 722-9985<br>
> > ><br>
> > ><br>
> > ><br>
> > ><br>
> > ><br>
> > > _______________________________________________<br>
> > > rtems-users mailing list<br>
> > > <a href="mailto:rtems-users@rtems.org">rtems-users@rtems.org</a> <mailto:<a href="mailto:rtems-users@rtems.org">rtems-users@rtems.org</a>><br>
</div></div>> <mailto:<a href="mailto:rtems-users@rtems.org">rtems-users@rtems.org</a> <mailto:<a href="mailto:rtems-users@rtems.org">rtems-users@rtems.org</a>>><br>
<div><div></div><div class="h5">> > > <a href="http://www.rtems.org/mailman/listinfo/rtems-users" target="_blank">http://www.rtems.org/mailman/listinfo/rtems-users</a><br>
> ><br>
> ><br>
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