Re:[ECOS] running ecos 2.0 on Excalibur

[Fernando Herrera <fherrera at teisa dot unican dot es>]

Fernando Herrera wrote:

More news about this issue,

Finally I got loading and running  with the arm-elf-gdb non graphical
program of redhat tools, the hello.elf application compiled with quartus
tools (thus, with gnupro tools). The tricky point is to make  the next 
sequence:

arm-elf-gdb hello.elf

(gdb) target remote localhost:9999

then it automatically attach and ...download the application!
since it appears parts of the source code where a break point
is automatically put (main.c:76) instead of beginning of main.

Then i only do a:

(gdb) cont

to see how it runs.

If I put breakpoints it does not catch them, but i suppose that
is because there is no correpondence between the symbol table
generated by gcc of gnupro tools and this gdb provided by redhat.
I think that would explain why stops at main.c:76 instead of at
main.c:26 (begining of main).

This sequence contrasts with what i did before. That "wrong" sequence was:

$arm-elf-gdb

(gdb) target remote localhost:9999
Then i had to load the application and run it

(gdb) load hello.elf
(gdb) cont

But this does not work!! I cann understand that the symbol table could 
not be
charged in this way, but, why the application did not run?

Somebody can shed some light here?

Now i will try to generate the application with the gnu tools, instead 
with the
gnupro tools.

Warwick, you mentioned that you load the application on 0x40000....
I saw that the application compiled with quartus maps .text section
in 0x8000h ,... maybe this helps.

regards again!....

nando



> Fernando Herrera wrote:
>
> I give some data that maybe can be interesting in this issue.
> I saw that gnu tools i downloaded are the 3.2.1  version, while
> the gnupro provided by altera are 2.96.-arm9-020528, in deed
> older version.
>
> I can also say that i sucessfully compiled and ran the hello example
> (which also makes a leds scrolling) provided in the getting_started 
> folder
> of the examples CD provided  by altera. I also can run the gdbstub and
> connect the arm-elf-gdb of the gnupro tools (it is indeed a graphical 
> insight
> application) and load  and debug the hello.elf file.
>
> However, if i try that with the arm-elf-gdb of the gnutools downloaded
> from redhat (which is not graphic) and i can download the application,
>  however i cannot put breakpoints (it says that no symbol table is 
> loaded)
> and if a made a cont or run, the examples does not run properly.
>
> It seems that there is no compatibility between the cross tool chains and
> that only gnupro chain is adapted to excalibur platform... that it is 
> because
> i was trying to build a configuration with gnupro tools...
>
> regards,
> nando


--
-----------------------------------------------------
Fernando Herrera
Microelectronics Engineering Group
E.T.S.I.Industriales y Telecom. TEISA Dpt.
University of Cantabria
Avda. Los Castros s/n, 39005
Santander, Spain
  fherrera@teisa.unican.es
  Tel. +34 942 200878
  Fax. +34 942 201873
-----------------------------------------------------




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