Hi Nathan,
we do not use c++, we use simple c, so I'm not sure if your hint with the
ctor function matches our problem.
But I've looked for crt0 and I've seen, that there is a gcrt0 (which
sounds for gcov) within the standard gcc environmont but no gcrt0 within
the am-elf-gcc environment.
Can you give me information, from where I can get a gcrt0 for the
am-elf-gcc
OR
what is the different between crt0 and gcrt0 ?
thank you
Franz
Nathan Sidwell <nathan@xxxxxxxxxxxxxxxx>
20.02.2006 19:06
An
Franz Kaufleitner <Franz.Kaufleitner@xxxxxxxxxxxxxxxxx>
Kopie
gcc-help@xxxxxxxxxxx
Thema
Re: arm-elf-gcc with gcov option do not work
Franz Kaufleitner wrote:
> Hi all,
>
> We're trying to use GCOV together with the ARM-ELF development
> environment.
>
> Our installation is:
> arm-elf-gcc: 3.4.3
> arm-elf-ld: 2.15
> arm-elf-ar, binutils: 2.15
>
>
> (1) First we've compiled with the following standard gcc command line
> gcc -fprofile-arcs ?ftest-coverage ?o sample sample.c
> Running the image will create the expected gcov data file sample.da.
>
> (2) After them, we've tried it with the arm-elf-gcc
> arm-elf-gcc -fprofile-arcs ?ftest-coverage ?o sample sample.c
> Running the image in the arm emulation arm-elf-run, no gcov data
> file sample.gda has been created.
>
> (3) Next, we've tried to manipulate the gcov internals by putting a
> debugging printf to the fuctions gcov_init and gcov_flush, but
> it seems, that the code of these functions isn't entered.
It seems like ctor functions are not being run. Have you tried a C++
program
which requires dynamic initializtion of a global variable? Something like
struct Foo { Foo () {printf ("ctoring\n");}
~Foo () {printf ("dtoring\n");}};
Foo object;
int main () {}
what does that do?
If it doesn't print those two strings, then something's awry with process
startup. That is somewhat system dependent and it sounds like you're
running on
a bare board. You'll need to examine your crt0 to see how it starts
things up.
nathan
--
Nathan Sidwell :: http://www.codesourcery.com :: CodeSourcery
nathan@xxxxxxxxxxxxxxxx ::
http://www.planetfall.pwp.blueyonder.co.uk
