Commit a556ee12 authored Sep 27, 2014 by Behan Webster Committed by Russell King Nov 13, 2014

ARM: 8171/1: Use current_stack_pointer for return_address



Use the global current_stack_pointer to get the value of the stack pointer.
This change supports being able to compile the kernel with both gcc and Clang.

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 0abc08ba

arch/arm/kernel/return_address.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -39,13 +39,12 @@ void *return_address(unsigned int level)
		{
		struct return_address_data data;
		struct stackframe frame;
		register unsigned long current_sp asm ("sp");

		data.level = level + 2;
		data.addr = NULL;

		frame.fp = (unsigned long)__builtin_frame_address(0);
		frame.sp = current_sp;
		frame.sp = current_stack_pointer;
		frame.lr = (unsigned long)__builtin_return_address(0);
		frame.pc = (unsigned long)return_address;

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