From 0ebc1f5671dff84b7ba4dcc38ebce956e6dea5fa Mon Sep 17 00:00:00 2001 From: Behan Webster Date: Sat, 27 Sep 2014 00:31:06 +0100 Subject: ARM: 8175/1: Use current_stack_pointer to calculate pt_regs address MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use the global current_stack_pointer to calculate the end of the stack for current_pt_regs() Signed-off-by: Behan Webster Reviewed-by: Mark Charlebois Reviewed-by: Jan-Simon Möller Acked-by: Will Deacon Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/include/asm/ptrace.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'arch/arm/include/asm/ptrace.h') diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h index 601264d983fa..51622ba7c4a6 100644 --- a/arch/arm/include/asm/ptrace.h +++ b/arch/arm/include/asm/ptrace.h @@ -154,9 +154,8 @@ static inline unsigned long user_stack_pointer(struct pt_regs *regs) return regs->ARM_sp; } -#define current_pt_regs(void) ({ \ - register unsigned long sp asm ("sp"); \ - (struct pt_regs *)((sp | (THREAD_SIZE - 1)) - 7) - 1; \ +#define current_pt_regs(void) ({ (struct pt_regs *) \ + ((current_stack_pointer | (THREAD_SIZE - 1)) - 7) - 1; \ }) #endif /* __ASSEMBLY__ */ -- cgit