Commit 0abc08ba authored by Behan Webster's avatar Behan Webster Committed by Russell King
Browse files

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: default avatarBehan Webster <behanw@converseincode.com>
Reviewed-by: default avatarJan-Simon Möller <dl9pf@gmx.de>
Reviewed-by: default avatarMark Charlebois <charlebm@gmail.com>
Acked-by: default avatarWill Deacon <will.deacon@arm.com>
Acked-by: default avatarNicolas Pitre <nico@linaro.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 2d605a30
......@@ -100,6 +100,11 @@ struct thread_info {
#define init_thread_info (init_thread_union.thread_info)
#define init_stack (init_thread_union.stack)
/*
* how to get the current stack pointer in C
*/
register unsigned long current_stack_pointer asm ("sp");
/*
* how to get the thread information struct from C
*/
......
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