[ECOS] Porting kvm onto eCos

[ECOS] Porting kvm onto eCos

[Yogesh Deshpande]

Hi,

  I am trying to port Sun's KVM (KJava Virtual Machine) onto eCos. 
Entire source code is in C and is compiled and executed on the Linux.  I
suppose that the same source code must get compiled with gcc cross compiler 
with minor changes such as replacing functions fseek(), ftell(), remove () etc
with their equivalents. But while compiling  and linking the same source code
using gcc cross compiler for eCos (host being Linux), compiler reports following
errors:  

ld: warning: cannot find entry symbol _start; defaulting to 08049d8c
undefined reference to `cyg_libc_stdio_stdout'
undefined reference to `hal_longjmp'


Can anybody enlighten in this regard.

Thanx in advance,

Yogesh Deshpnde,
Aftek Infosys Ltd.

Re: [ECOS] Porting kvm onto eCos

[Jonathan Larmour]

Yogesh Deshpande wrote:
> 
> Hi,
> 
>   I am trying to port Sun's KVM (KJava Virtual Machine) onto eCos.
> Entire source code is in C and is compiled and executed on the Linux.  I
> suppose that the same source code must get compiled with gcc cross compiler
> with minor changes such as replacing functions fseek(), ftell(), remove () etc
> with their equivalents. But while compiling  and linking the same source code
> using gcc cross compiler for eCos (host being Linux), compiler reports following
> errors:
> 
> ld: warning: cannot find entry symbol _start; defaulting to 08049d8c

Sounds like you aren't using the eCos linker script.

> undefined reference to `cyg_libc_stdio_stdout'
> undefined reference to `hal_longjmp'


Those should be in libtarget.a in the lib/ subdirectory of your installed
eCos directory. At a guess they are missing because the lack of linker
script means libtarget.a isn't being linked either.

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