krishna.vamsi@xxxxxxxxx wrote: > Before Executing the main function, a startup routine will be executed > which will set up the initial environment for the process. > > This Startup routine will be supplied by the kernel That's incorrect. The kernel's job ends at the point that it inkokes the loader. > and linked by the > Linker. My question is : Can we add one more startup routine before > executing the main program, if yes how?? Apart from the approach suggested by Steve, you can replace the run-time startup file (crtbegin.o etc) with your own file (use gcc's -nostartfiles option), or use your own loader in place of ld-linux.so.2 (store the name of the loader in the .interp section of the executable). -- Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> - : send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
