Messages in this thread Patch in this message | | | From | behanw@converse ... | Subject | [PATCH V2 6/6] arm64: LLVMLinux: Use global stack pointer in return_address() | Date | Tue, 26 Aug 2014 21:29:34 -0700 |
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From: Behan Webster <behanw@converseincode.com>
The global register current_stack_pointer holds the current stack pointer. This change supports being able to compile the kernel with both gcc and clang.
Author: Mark Charlebois <charlebm@gmail.com> Signed-off-by: Mark Charlebois <charlebm@gmail.com> Signed-off-by: Behan Webster <behanw@converseincode.com> --- arch/arm64/kernel/return_address.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/arm64/kernel/return_address.c b/arch/arm64/kernel/return_address.c index 89102a6..6c4fd28 100644 --- a/arch/arm64/kernel/return_address.c +++ b/arch/arm64/kernel/return_address.c @@ -36,13 +36,12 @@ void *return_address(unsigned int level) { struct return_address_data data; struct stackframe frame; - register unsigned long current_sp asm ("sp"); data.level = level + 2; data.addr = NULL; frame.fp = (unsigned long)__builtin_frame_address(0); - frame.sp = current_sp; + frame.sp = current_stack_pointer; frame.pc = (unsigned long)return_address; /* dummy */ walk_stackframe(&frame, save_return_addr, &data); -- 1.9.1
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