[ECOS] "Invalid download offset" when downloading eCos

[ECOS] "Invalid download offset" when downloading eCos

[Daniel.Andersson]

Hi,

I am using Carl's version of eCos but i cant download any code. If i try
then i get the below error message from gdb. I have tried downloading on
different locations i.e. 0x02018000 and 0x02000000 and according to the
manual it should be right. What else could be wrong?

I have built the "default" version of eCos.

Regards, Daniel

--------------clip-----------------------
administrator@CS080091 /c/program files/red hat/eCos/examples
$ make
arm-elf-gcc -mcpu=arm7tdmi                         -c -o hello.o -g -Wall
-I/ecos-work/eb40_install/include -ffunction-s
ections -fdata-sections -I/cygwin-1.1.8-2/newlib/libc/include hello.c
arm-elf-gcc -mcpu=arm7tdmi                         -nostartfiles
-L/ecos-work/eb40_install/lib -Wl,--gc-sections -Wl,-Ma
p -Wl,bt_mapfile.map -o hello hello.o -Ttarget.ld -nostdlib -o kalle.out

administrator@CS080091 /c/program files/red hat/eCos/examples
$ arm-elf-gdb -nw kalle.out
GNU gdb 5.0
Copyright 2000 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "--host=i686-pc-cygwin --target=arm-elf"...
Angel Debug Monitor (serial) 1.04 (Advanced RISC Machines SDT 2.5) for
AT91EB40 (2.00)
Angel Debug Monitor rebuilt on Apr 07 2000 at 12:40:31
Serial Rate:   9600
Connected to ARM RDI target.
gdb.ini:3: Error in sourced command file:
Invalid download offset: files/red hat/eCos/examples/kalle.out
--------------clip-----------------------

-----Original Message-----
From: Balet Charles-Henri [ mailto:charles-henri@prolectronic.com ]
Sent: den 15 april 2001 17:28
To: ecos-discuss@sources.redhat.com
Subject: [ECOS] Personals files with CVS update


Hello, I want to work with the CVS for having the last version, but I have
modify the ecos.db and
adding directory and files for an new platform, my question : are this
modified files replaced on
the next CVS update, if yes, how can I make for preserve this own files ?
many thanks

Re: [ECOS] "Invalid download offset" when downloading eCos

[Jonathan Larmour]

Daniel.Andersson@combitechsystems.com wrote:
> 
> Hi,
> 
> I am using Carl's version of eCos but i cant download any code. If i try
> then i get the below error message from gdb. I have tried downloading on
> different locations i.e. 0x02018000 and 0x02000000 and according to the
> manual it should be right. What else could be wrong?

From the output it looks like the spaces in the filename path are confusing
it.

Jifl
-- 
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine

RE: [ECOS] "Invalid download offset" when downloading eCos

[Daniel.Andersson]

Hi,

>Daniel.Andersson@combitechsystems.com wrote:
>> 
>> Hi,
>> 
>> I am using Carl's version of eCos but i cant download any code. If i try
>> then i get the below error message from gdb. I have tried downloading on
>> different locations i.e. 0x02018000 and 0x02000000 and according to the
>> manual it should be right. What else could be wrong?
>
From the output it looks like the spaces in the filename path are confusing
>it.
>

I don't think so because i have a ledblink application in the same folder
that is NOT using eCos and it works fine to download it. If i run an objdump
on my output file i get the following:

-----------clip------------
Program Header:
    LOAD off    0x00008000 vaddr 0x02000000 paddr 0x02000000 align 2**15
         filesz 0x0000a07c memsz 0x0001239c flags rwx
private flags = 0: [interworking not enabled] [APCS-32] [floats passed in
integer registers] [absolute position]
-----------clip------------

What does it mean by LOAD off 0x00008000? It seems to me that it is this
offset that isn't correct...?

Another question: Is it possitble to download an eCos application with Angel
and make it work fine or do i have to download an eCos gdb stub first.

/Daniel

RE: [ECOS] "Invalid download offset" when downloading eCos

[Lewin A.R.W. Edwards]

Hi Daniel,

> >> then i get the below error message from gdb. I have tried downloading on
> >> different locations i.e. 0x02018000 and 0x02000000 and according to the
> >> manual it should be right. What else could be wrong?
> >
>that is NOT using eCos and it works fine to download it. If i run an objdump
>on my output file i get the following:
>
>-----------clip------------
>Program Header:
>     LOAD off    0x00008000 vaddr 0x02000000 paddr 0x02000000 align 2**15
>          filesz 0x0000a07c memsz 0x0001239c flags rwx

0x8000 is nonexistent on the EB40 after the remap command. The header above 
says that your image is being loaded at address 0x8000 with a _virtual_ 
address of 0x2000000. Check your linker script.

If you're ROMming the code, the load offset should be 0, if RAM then it 
should be 0x02000000.

=== Lewin A.R.W. Edwards (Embedded Engineer)
Work: http://www.digi-frame.com/
Personal: http://www.zws.com/ and http://www.larwe.com/

"... a man who is endowed with real qualities of leadership will be tempted 
to refrain from taking part in political life; because [...] the situation 
does not call for a man who has a capacity for constructive statesmanship 
but rather for a man who is capable of bargaining for the favour of the 
majority. Thus the situation will appeal to small minds and will attract 
them accordingly."

Re: [ECOS] "Invalid download offset" when downloading eCos

[Jonathan Larmour]

Daniel.Andersson@combitechsystems.com wrote:
> 
> Hi,
> 
> >Daniel.Andersson@combitechsystems.com wrote:
> >>
> >> Hi,
> >>
> >> I am using Carl's version of eCos but i cant download any code. If i try
> >> then i get the below error message from gdb. I have tried downloading on
> >> different locations i.e. 0x02018000 and 0x02000000 and according to the
> >> manual it should be right. What else could be wrong?
> >
> >From the output it looks like the spaces in the filename path are confusing
> >it.
> >
> 
> I don't think so because i have a ledblink application in the same folder
> that is NOT using eCos and it works fine to download it. If i run an objdump
> on my output file i get the following:

It just seemed odd that the output was:

Connected to ARM RDI target.
gdb.ini:3: Error in sourced command file:
Invalid download offset: files/red hat/eCos/examples/kalle.out

Which implies that it was interpreting "file/red hat
eCos/examples/kalle.out" is a download offset. But instead I suspect that
it's just the error message output that is getting garbled because of the
space in the filename.

But if you have a different app that works,certainly compare your objdump
output with that, particularly given Lewin's comments.

> Another question: Is it possitble to download an eCos application with
> Angel and make it work fine or do i have to download an eCos gdb stub
> first.

Interworking with Angel has not been a priority due to its proprietary
nature, dearth of documentation and unreliability.

But we've made it work for the PID I believe. Check through the ARM HAL for
the option CYGSEM_HAL_ARM_PID_ANGEL_BOOT to see what is involved.

Jifl
-- 
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine