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