Re: [ECOS] confused about running program on remote target

[michael shiloh <michael at magrittesystems dot com>]

Hi Erik,

thanks so much for your reply. i did actually search the
list and found your post which said:

  "the short answer is : recompile with latest sources!

this advice was very good; i compiled all the tools and ecos
from scratch, from latest source, and it did solve a lot of
other problems, but for some reason i didn't think of 
applying it to redboot also.

i'll do that now, and if i have any luck i'll certainly pass
on my recipe to you.

thanks,
michael

On Wed, 30 Jan 2002, Erik Reikes wrote:

> 
> The problem as I understand it is that the Redboot.bin from Redhat doesn't 
> reserve enough ram.  When newer applications are downloaded, it overwrites 
> redboot and crashes the debugger.
> 
> The file you need to change is an .ldi file in the pkgconf directory.  Then 
> you need to recompile the redboot.bin file.
> 
> If you search over the past couple of days you'll see that I have been 
> having the same problem.  If you get redboot.bin to compile, please let me 
> know what you did as I have been beating my head against the wall for a few 
> days to no avail.  Looks like some kind of problem in the disk IO 
> assembler... blech.  I've been trying to work around it, but at this point 
> I'm out of ideas.
> 
> Good luck!
> 
> -Erik Reikes
> 
> >From: michael shiloh <michael@magrittesystems.com>
> >To: <ecos-discuss@sources.redhat.com>
> >Subject: [ECOS] confused about running program on remote target
> >Date: Wed, 30 Jan 2002 14:18:56 -0800 (PST)
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> >
> >hello,
> >
> >summary: i'm having trouble running an ecos application on a
> >target, via gdb and a serial port. i tried both "run" and
> >"continue".
> >
> >setup:
> >
> >ecos:       from cvs (updated today)
> >host:       linux redhat 7.2
> >target:     x86 pc
> >binutils:   2.11.2
> >gcc core:   3.0.3
> >gcc c, c++: 3.0.3
> >gdb:        5.1.1
> >
> >my target is connected to my host via a serial port. target
> >is booting from redboot.bin on a floppy. redboot.bin is the
> >precompiled version from the website.
> >
> >target screen shows a boot, and if i run minicom on the
> >serial port instead of gdb i get the boot messages there:
> >
> >   RedBoot(tm) bootstrap and debug environment - built
> >   05:37:52, Jun  8 2001
> >
> >   Platform: PC (I386)
> >   Copyright (C) 2000, 2001, Red Hat, Inc.
> >
> >   RAM: 0x00000000-0x000a0000, 0x0007c080-0x000a0000 available
> >   RedBoot>
> >
> >   (now quit minicom and reboot)
> >
> >i build hello.c for my target:
> >
> >   # file hello
> >     hello: ELF 32-bit LSB executable, Intel 80386, version 1,
> >     statically linked, not stripped
> >
> >and attach using gdb:
> >
> >   #   i386-elf-gdb -nw hello
> >   GNU gdb 5.1.1
> >   [...]
> >   This GDB was configured as "--host=i686-pc-linux-gnu 
> >--target=i386-elf"...
> >   (gdb) set remotebaud 38400
> >   (gdb) target remote /dev/ttyS0
> >   Remote debugging using /dev/ttyS0
> >   0x00007f38 in ?? ()
> >       at
> >   
> >/home/mshiloh/ecos/cvs/ecos/packages/language/c/libc/startup/current/src/atexit.cxx:123
> >   123 } // atexit()
> >   Current language:  auto; currently c++
> >   (gdb) load
> >   Loading section .text, size 0x7ab0 lma 0x108000
> >   Loading section .rodata, size 0x265 lma 0x10fab0
> >   Loading section .data, size 0x248 lma 0x10fd18
> >   Start address 0x108000, load size 32605
> >   Transfer rate: 20064 bits/sec, 74 bytes/write.
> >   (gdb) run
> >   The program being debugged has been started already.
> >   Start it from the beginning? (y or n) y
> >
> >   Starting program: /home/mshiloh/ecos/cvs/ecos/examples/hello
> >   Don't know how to run.  Try "help target".
> >
> >now try using "continue" instead of "run":
> >
> >   [...]
> >   (gdb) continue
> >   Continuing.
> >
> >   (at this point it hangs, without having printed anything)
> >
> >
> >
> >so my main question is how do i run a program on my target?
> >
> >possibly related, can anyone tell me if there is a problem
> >with the "atexit()" line? is it an error, or is it just
> >telling me where it's stopped? is this ok?
> >
> >any help much appreciated.
> >
> >thanks,
> >michael
> >
> 
> 
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