root/arch/x86/kernel/syscall_64.c

/* System call table for x86-64. */

#include <linux/linkage.h>
#include <linux/sys.h>
#include <linux/cache.h>
#include <asm/asm-offsets.h>

#define __NO_STUBS

#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ;
#undef ASM_X86__UNISTD_64_H
#include <asm/unistd_64.h>

#undef __SYSCALL
#define __SYSCALL(nr, sym) [nr] = sym,
#undef ASM_X86__UNISTD_64_H

typedef void (*sys_call_ptr_t)(void);

extern void sys_ni_syscall(void);

const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = {
        /*
        *Smells like a like a compiler bug -- it doesn't work
        *when the & below is removed.
        */
        [0 ... __NR_syscall_max] = &sys_ni_syscall,
#include <asm/unistd_64.h>
};