Hi Matthias, El Thu, Nov 22, 2012 at 09:44:37AM +0100 Matthias Brugger ha dit: > I'm looking into the avr32 architecture implementation, as compiling the > kernel gives you several warnings about system calls which are missing. > > I had a look in the unistd.h file I realized that system call numbers > differ widely from other architectures (I had a look at arm and x86). > Are the system call numbers platform specific. As far as I understand, > the system calls are "wrapped" in libc. So I wonder if [g,e,uC]libc uses > a different system call number each architecture. > A look in the source of uClibc didn't helped me to clear my doubts. yes, the system call numbers are architecture specific Documentation/ABI/stable/syscalls: Note that this interface is different for every architecture that Linux supports. Please see the architecture-specific documentation for details on the syscall numbers that are to be mapped to each syscall > If not all system calls are implemented for avr32: > - is there a problem at all, or does libc implementation take care of > not implemented system calls? > - if I want to add a system call, what are the steps needed? there are several sources out there explaining this, one is http://www.ibm.com/developerworks/library/l-system-calls/ best regards -- Matthias Kaehlcke Embedded Linux Developer Amsterdam There is nothing so useless as doing efficiently that which should not be done at all (Peter Drucker) .''`. using free software / Debian GNU/Linux | http://debian.org : :' : `. `'` gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `- _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
