u_ssptr            58 arch/sparc/kernel/kernel.h asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp);
u_ssptr           703 arch/sparc/kernel/signal32.c asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp)
u_ssptr           706 arch/sparc/kernel/signal32.c 		(struct sigstack32 __user *)((unsigned long)(u_ssptr));