← Back to team overview

rohc team mailing list archive

Re: decompressor not working for me

 

Hi Didier,

There was no attachment.

Regards,
harpreet
On Wed, 2009-11-25 at 10:35 +0100, Didier Barvaux wrote:
> Hi,
> 
> > The code I replaced it with is given below.
> > 	/* read the IP-ID field */
> >         {
> >          uint16_t temp = 0;
> >          temp = packet[0];
> >          temp <<= 8;
> >          temp |= packet[1];   
> > 	//ipv4_set_id(ip, *((uint16_t *) packet));
> > 	ipv4_set_id(ip, temp);
> > 	rohc_debugf(3, "IP-ID = 0x%04x\n", ntohs(ipv4_get_id(*ip)));
> > 	packet += 2;
> > 	read += 2;
> >         }
> > from below given function "d_decode_dynamic_ip4".
> 
> Thank you. Could you please compile and run the attached test program
> to check if the uint16_t cast is the root of your problem ? You may
> follow these steps :
>  $ gcc -g -Wall -Werror -c -o test_uint16t_cast.o test_uint16t_cast.c
>  $ gcc test_uint16t_cast.o -o test_uint16t_cast 
>  $ ./test_uint16t_cast
>  first 2 bytes = 0x0100
>  last 2 bytes = 0x0302
> 
> Please report me any GCC warning. The result given by the test program
> may differ from the one I get on x86 depending on the endianness of your
> microcontroller.
> 
> 
> > I have not used gdb yet on uclinux.
> > 
> > can you send some instructions as you said?
> > It will be helpful.
> 
> I do not know how to install gdb on uclinux if it is not done yet. Use
> the documentation provided by the manufacturer.
> 
> Once gdb is setup on your platform, you may follow these instructions :
>  $ gdb ./test_program [optional_arguments]
>  (gdb) run
>  <gdb reports crash here>
>  (gdb) bt
> 
> Do not forget to build you test program with "-g" so that debug
> information is included in the binary.
> 
> Didier Barvaux
> Viveris Technologies
> 
> _______________________________________________
> Mailing list: https://launchpad.net/~rohc
> Post to     : rohc@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~rohc
> More help   : https://help.launchpad.net/ListHelp


-- 
Software Engineer
1Spatial Australia
+61 3 52616840




Follow ups

References