1struct pt_regs;
2struct sigaction;
3asmlinkage long xtensa_execve(char*, char**, char**, struct pt_regs*);
4asmlinkage long xtensa_clone(unsigned long, unsigned long, struct pt_regs*);
5asmlinkage long xtensa_pipe(int __user *);
6asmlinkage long xtensa_mmap2(unsigned long, unsigned long, unsigned long,
7    			     unsigned long, unsigned long, unsigned long);
8asmlinkage long xtensa_ptrace(long, long, long, long);
9asmlinkage long xtensa_sigreturn(struct pt_regs*);
10asmlinkage long xtensa_rt_sigreturn(struct pt_regs*);
11asmlinkage long xtensa_sigsuspend(struct pt_regs*);
12asmlinkage long xtensa_rt_sigsuspend(struct pt_regs*);
13asmlinkage long xtensa_sigaction(int, const struct old_sigaction*,
14				 struct old_sigaction*);
15asmlinkage long xtensa_sigaltstack(struct pt_regs *regs);
16asmlinkage long sys_rt_sigaction(int,
17				 const struct sigaction __user *,
18				 struct sigaction __user *,
19				 size_t);
20asmlinkage long xtensa_shmat(int shmid, char __user *shmaddr, int shmflg);
21