u_ossptr 58 arch/sparc/kernel/kernel.h asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp); u_ossptr 703 arch/sparc/kernel/signal32.c asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp) u_ossptr 708 arch/sparc/kernel/signal32.c (struct sigstack32 __user *)((unsigned long)(u_ossptr));