114 static int read_user_stack_slow(void __user *ptr, void *buf, int nb)  in read_user_stack_slow()
155 static int read_user_stack_64(unsigned long __user *ptr, unsigned long *ret)  in read_user_stack_64()
171 static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret)  in read_user_stack_32()
224 	struct signal_frame_64 __user *sf;  in sane_signal_64_frame()
227 	sf = (struct signal_frame_64 __user *) sp;  in sane_signal_64_frame()
228 	if (read_user_stack_64((unsigned long __user *) &sf->pinfo, &pinfo) ||  in sane_signal_64_frame()
229 	    read_user_stack_64((unsigned long __user *) &sf->puc, &puc))  in sane_signal_64_frame()
242 	struct signal_frame_64 __user *sigframe;  in perf_callchain_user_64()
243 	unsigned long __user *fp, *uregs;  in perf_callchain_user_64()
251 		fp = (unsigned long __user *) sp;  in perf_callchain_user_64()
270 			sigframe = (struct signal_frame_64 __user *) sp;  in perf_callchain_user_64()
307 static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret)  in read_user_stack_32()
390 	struct signal_frame_32 __user *sf;  in sane_signal_32_frame()
393 	sf = (struct signal_frame_32 __user *) (unsigned long) sp;  in sane_signal_32_frame()
394 	if (read_user_stack_32((unsigned int __user *) &sf->sctx.regs, &regs))  in sane_signal_32_frame()
401 	struct rt_signal_frame_32 __user *sf;  in sane_rt_signal_32_frame()
404 	sf = (struct rt_signal_frame_32 __user *) (unsigned long) sp;  in sane_rt_signal_32_frame()
405 	if (read_user_stack_32((unsigned int __user *) &sf->uc.uc_regs, &regs))  in sane_rt_signal_32_frame()
410 static unsigned int __user *signal_frame_32_regs(unsigned int sp,  in signal_frame_32_regs()
413 	struct mcontext32 __user *mctx = NULL;  in signal_frame_32_regs()
414 	struct signal_frame_32 __user *sf;  in signal_frame_32_regs()
415 	struct rt_signal_frame_32 __user *rt_sf;  in signal_frame_32_regs()
426 		sf = (struct signal_frame_32 __user *) (unsigned long) sp;  in signal_frame_32_regs()
433 		rt_sf = (struct rt_signal_frame_32 __user *) (unsigned long) sp;  in signal_frame_32_regs()
449 	unsigned int __user *fp, *uregs;  in perf_callchain_user_32()
457 		fp = (unsigned int __user *) (unsigned long) sp;  in perf_callchain_user_32()