[ECOS] file system initialize

[ECOS] file system initialize

[james chen]

Hi,
      I use MTAB_ENTRY to static mount a fs. when I debug my fs, I found
that fs->mount is called before dlmalloc initialize. so malloc called
failure in mount. may be the init priority of
fileio_initializer(io\fileio\src\misc.cxx) must be changed, can anyone tell
me how to change it!

    static Cyg_Fileio_Init_Class fileio_initializer
CYGBLD_ATTRIB_INIT_PRI(CYG_INIT_IO); ???

Best Regards,
james

Re: [ECOS] file system initialize

[Jonathan Larmour]

james chen wrote:
> 
> Hi,
>       I use MTAB_ENTRY to static mount a fs. when I debug my fs, I found
> that fs->mount is called before dlmalloc initialize. so malloc called
> failure in mount. may be the init priority of
> fileio_initializer(io\fileio\src\misc.cxx) must be changed, can anyone tell
> me how to change it!
> 
>     static Cyg_Fileio_Init_Class fileio_initializer
> CYGBLD_ATTRIB_INIT_PRI(CYG_INIT_IO); ???

fileio _should_ be initialized before dlmalloc. dlmalloc is initialized
with priority "CYGBLD_ATTRIB_INIT_BEFORE(CYG_INIT_LIBC)", which is (from
infra/current/include/cyg_type.h) 49900.

CYG_INIT_IO is 49000.

Did you compile all of eCos with -finit-priority? Perhaps your tools don't
support it properly. What version of gcc/binutils you got?

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
Come to the Red Hat TechWorld open source conference in Brussels!
Keynotes, techie talks and exhibitions    http://www.redhat-techworld.com/

Re: [ECOS] file system initialize

[james chen]

> james chen wrote:
> >
> > Hi,
> >       I use MTAB_ENTRY to static mount a fs. when I debug my fs, I found
> > that fs->mount is called before dlmalloc initialize. so malloc called
> > failure in mount. may be the init priority of
> > fileio_initializer(io\fileio\src\misc.cxx) must be changed, can anyone
tell
> > me how to change it!
> >
> >     static Cyg_Fileio_Init_Class fileio_initializer
> > CYGBLD_ATTRIB_INIT_PRI(CYG_INIT_IO); ???
>
> fileio _should_ be initialized before dlmalloc. dlmalloc is initialized
> with priority "CYGBLD_ATTRIB_INIT_BEFORE(CYG_INIT_LIBC)", which is (from
> infra/current/include/cyg_type.h) 49900.
>
> CYG_INIT_IO is 49000.
>
> Did you compile all of eCos with -finit-priority? Perhaps your tools don't
> support it properly. What version of gcc/binutils you got?
>
my gcc/binutils is arm-elf-gcc with version 2.95 and I have
enable -finit-priority. during my own file system initializing, I need to
call malloc. so now I have to use dynamic mount instead of static mount, am
I right?

Thanks in advance!

Brs
james

Re: [ECOS] file system initialize

[Jonathan Larmour]

james chen wrote:
> 
> > james chen wrote:
> > >
> > > Hi,
> > >       I use MTAB_ENTRY to static mount a fs. when I debug my fs, I found
> > > that fs->mount is called before dlmalloc initialize. so malloc called
> > > failure in mount. may be the init priority of
> > > fileio_initializer(io\fileio\src\misc.cxx) must be changed, can anyone
> tell
> > > me how to change it!
> > >
> > >     static Cyg_Fileio_Init_Class fileio_initializer
> > > CYGBLD_ATTRIB_INIT_PRI(CYG_INIT_IO); ???
> >
> > fileio _should_ be initialized before dlmalloc. dlmalloc is initialized
> > with priority "CYGBLD_ATTRIB_INIT_BEFORE(CYG_INIT_LIBC)", which is (from
> > infra/current/include/cyg_type.h) 49900.
> >
> > CYG_INIT_IO is 49000.
> >
> > Did you compile all of eCos with -finit-priority? Perhaps your tools don't
> > support it properly. What version of gcc/binutils you got?
> >
> my gcc/binutils is arm-elf-gcc with version 2.95 and I have
> enable -finit-priority. during my own file system initializing, I need to
> call malloc. so now I have to use dynamic mount instead of static mount, am
> I right?

In general "libc" stuff has to be set up after the I/O stuff because of
stdio. However that is somewhat historical, and I could probably change the
memory allocator initializer priority to be something earlier now. I'll do
that, and you can do that too by editing
services/memalloc/common/current/src/heapgen.tcl and changing the
CYG_INIT_LIBC to CYG_INIT_IO.

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
Come to the Red Hat TechWorld open source conference in Brussels!
Keynotes, techie talks and exhibitions    http://www.redhat-techworld.com/