ARM: 8170/1: Add global named register current_stack_pointer for ARM
Define a global named register for current_stack_pointer. The use of this new variable guarantees that both gcc and clang can access this register in C code. Signed-off-by: NBehan Webster <behanw@converseincode.com> Reviewed-by: NJan-Simon Möller <dl9pf@gmx.de> Reviewed-by: NMark Charlebois <charlebm@gmail.com> Acked-by: NWill Deacon <will.deacon@arm.com> Acked-by: NNicolas Pitre <nico@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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