[PATCH 6/6] arm: LLVMLinux: Use current_stack_pointer in unwind_backtrace
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From: behanw at converseincode.com <hidden>
Date: 2014-07-08 20:16:57
Also in:
lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Revision v1 of 6 in this series; 1 review trailer.
Revisions (6)
From: Behan Webster <redacted> 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 <redacted> Signed-off-by: Mark Charlebois <redacted> Reviewed-by: Jan-Simon M??ller <redacted> --- 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