RTEMS image size question

[Matthews, Lee]

Hi,



I'm developing some software that uses RTEMS on an Aeroflex Gaisler LEON3 processor that is running on a Pender GR-CPCI-AX2000 development board.



I use the following statement to compile my source code : sparc-rtems-gcc -O2 -g sourcecode.c -o outputexecutable.exe



My image files always seem to be rather large (about 150Kbytes), even for rather simple code - is this normal ?



So for example, I modified the provided sample source file rtems-hello.c to look like the following :



#include <rtems.h>

/* configuration information */



#define CONFIGURE_INIT



#include <bsp.h> /* for device driver prototypes */



rtems_task Init( rtems_task_argument argument); /* forward declaration needed */



/* configuration information */



#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER

#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER



#define CONFIGURE_MAXIMUM_TASKS             4



#define CONFIGURE_RTEMS_INIT_TASKS_TABLE



#define CONFIGURE_EXTRA_TASK_STACKS         (3 * RTEMS_MINIMUM_STACK_SIZE)





#include <rtems/confdefs.h>



#include <stdlib.h>



rtems_task Init(rtems_task_argument ignored)

{

  exit( 0 );

}





Yet, when I compile the code and look at its size using sparc-rtems-size it comes out as :



sparc-rtems-size rtems-hello.exe

   text        data         bss         dec         hex     filename

136736        4068        4736     145540       23884     rtems-hello.exe



I do not understand why the image size is so big, given the lack of the visible code's complexity. Is everything compiled in by default? Do I need to explicitly remove the bits from RTEMs that I don't need? How can I reduce the image size?



Any help or guidance would be much appreciated.



Thanks in advance,

Lee

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