Messages in this thread Patch in this message | | | From | behanw@converse ... | Subject | [PATCH 6/6] arm: LLVMLinux: Use current_stack_pointer in unwind_backtrace | Date | Tue, 8 Jul 2014 13:16:16 -0700 |
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From: Behan Webster <behanw@converseincode.com>
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> Signed-off-by: Mark Charlebois <charlebm@gmail.com> Reviewed-by: Jan-Simon M??ller <dl9pf@gmx.de> --- arch/arm/kernel/unwind.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c index e67682f..e20e8dc 100644 --- a/arch/arm/kernel/unwind.c +++ b/arch/arm/kernel/unwind.c @@ -471,7 +471,6 @@ int unwind_frame(struct stackframe *frame) void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk) { struct stackframe frame; - register unsigned long current_sp asm ("sp"); pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk); @@ -487,7 +486,7 @@ void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk) ? regs->ARM_pc : regs->ARM_lr; } else if (tsk == current) { 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)unwind_backtrace; } else { -- 1.9.1
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