Commit 0ebc1f56 authored Sep 27, 2014 by Behan Webster Committed by Russell King Nov 13, 2014

ARM: 8175/1: Use current_stack_pointer to calculate pt_regs address



Use the global current_stack_pointer to calculate the end of the stack for
current_pt_regs()

Signed-off-by: Behan Webster <behanw@converseincode.com>
Reviewed-by: Mark Charlebois <charlebm@gmail.com>
Reviewed-by: Jan-Simon Möller <dl9pf@gmx.de>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

parent ccbd2da5

arch/arm/include/asm/ptrace.h

+2 −3

Original line number	Diff line number	Diff line
		@@ -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__ */

Admin message