Gdb remote debugging

Gdb remote debugging :  

Gdb cross compilation: 

Gdb source can be download from here 
extract the source,
   $ tar -xvf gdb-7.4.tar.gz
enter into the gdbserver folder,
   $ cd gdb-7.4/gdb/gdbserver
cross compiling the gdbserver, make sure that arm toolchain should be in binany path.
   $ CC=arm-none-linux-gnueabi-gcc ./configure --host=arm-linux
    $ make
copy the gdbserver binary to the target machine.
   

Cross compiling the application:

   $ arm-none-linux-gnueabi-gcc -g test.c -o test
transfer the binary to the target machine

Running gdb server in target:

   # gdbserver :2345 ./test
output is like,
     Process ./test created, pid = 57
     Listening on port 2345

Running gdb in host machine:

   $ arm-none-linux-gnueabi-gdb ./test
after gdt prompt appers, 
   (gdb) set sysroot /path/to/rootfs
   (gdb) set solib-search-path /path/to/arm/toolchain/lib
example toolchain path is like,
"/home/abdul/em_linux/arm-2011.09/arm-none-linux-gnueabi/libc/lib"
   (gdb) target remote 192.168.1.2:2345
replace the ipaddress with target ipaddress
   (gdb) b main
 after this we can step through and debug the application in remote machine.