Commit 74dbeee0 authored by Behan Webster's avatar Behan Webster Committed by Russell King
Browse files

ARM: 8172/1: Use current_stack_pointer in save_stack_trace_tsk



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: default avatarBehan Webster <behanw@converseincode.com>
Reviewed-by: default avatarMark Charlebois <charlebm@gmail.com>
Reviewed-by: default avatarJan-Simon Möller <dl9pf@gmx.de>
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 a556ee12
......@@ -134,12 +134,10 @@ static noinline void __save_stack_trace(struct task_struct *tsk,
frame.pc = thread_saved_pc(tsk);
#endif
} else {
register unsigned long current_sp asm ("sp");
/* We don't want this function nor the caller */
data.skip += 2;
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)__save_stack_trace;
}
......
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