From 1ca97bb541a1f5a735e697a8bba763cde3aab452 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 18 Nov 2012 12:50:10 -0500 Subject: new helper: current_user_stack_pointer() Cross-architecture equivalent of rdusp(); default is user_stack_pointer(current_pt_regs()) - that works for almost all platforms that have usp saved in pt_regs. The only exception from that is ia64 - we want memory stack, not the backing store for register one. Signed-off-by: Al Viro --- arch/blackfin/include/asm/ptrace.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/blackfin/include') diff --git a/arch/blackfin/include/asm/ptrace.h b/arch/blackfin/include/asm/ptrace.h index 10d8641180f2..c42002506a26 100644 --- a/arch/blackfin/include/asm/ptrace.h +++ b/arch/blackfin/include/asm/ptrace.h @@ -106,6 +106,7 @@ struct pt_regs { #define arch_has_single_step() (1) /* common code demands this function */ #define ptrace_disable(child) user_disable_single_step(child) +#define current_user_stack_pointer() rdusp() extern int is_user_addr_valid(struct task_struct *child, unsigned long start, unsigned long len); -- cgit v1.2.3