#include <syscall.h>

struct pt_regs {

	unsigned long	r15;

	unsigned long	r14;

	unsigned long	r13;

	unsigned long	r12;

	unsigned long	rbp;

	unsigned long	rbx;

	unsigned long	r11;

	unsigned long	r10;

	unsigned long	r9;

	unsigned long	r8;

	unsigned long	rax;

	unsigned long	rcx;

	unsigned long	rdx;

	unsigned long	rsi;

	unsigned long	rdi;

	unsigned long	orig_rax;

	unsigned long	rip;

	unsigned long	cs;

	unsigned long	eflags;

	unsigned long	rsp;

	unsigned long	ss;

};

typedef long __sys_clone(

	unsigned long	flags,

	void *		child_stack,

	void *		ptid,

	void *		ctid,

	struct pt_regs *regs);

typedef int __entry_point(void *);

extern unsigned long ** __syscall_vtbl;

int __clone(

	__entry_point *	fn,

	void *		child_stack,

	int		flags,

	void *		arg,

	int *		ptid,

	void *		pthread_self_addr,

	int *		ctid)

{

	struct pt_regs	regs;

	__sys_clone *	pfn_clone;

	regs.rip = (unsigned long)fn;

	regs.rcx = (unsigned long)arg;

	regs.rdx = (unsigned long)pthread_self_addr;

	pfn_clone = (__sys_clone *)(__syscall_vtbl[SYS_clone]);

	return (int)pfn_clone(

		flags,

		child_stack,

		ptid,

		ctid,

		®s;;

}