location of inbuilt system call implementation

[Denis Kirjanov]

Check for the SYSCALL_DEFINE[0-6] macros.

commit 1a94bc34768e463a93cb3751819709ab0ea80a01
Author: Heiko Carstens <heiko.carstens at de.ibm.com>
Date:   Wed Jan 14 14:13:59 2009 +0100

    [CVE-2009-0029] System call wrapper infrastructure

    From: Martin Schwidefsky <schwidefsky at de.ibm.com>

    By selecting HAVE_SYSCALL_WRAPPERS architectures can activate
    system call wrappers in order to sign extend system call arguments.

    All architectures where the ABI defines that the caller of a function
    has to perform sign extension probably need this.

On 3/11/13, Niroj Pokhrel <nirojpokhrel at gmail.com> wrote:
> Hi All,
> I am newbies to Linux and am going through system call in kernel-3.4. I
> just wanted to check how sys_read, sys_write or other system calls work but
> I was searching for the implementation but couldn't find it.
> I found that :
> System Call are added in /arch/x86/syscalls/syscall_32(or64).tbl. and
> they were declared in /incude/linux/sycalls.h
> But I was not able to find exactly where they are implemented.
>
> Thanking you all in advance.
>


-- 
Regards,
Denis