From: Behan Webster <beh...@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 <charl...@gmail.com>
Signed-off-by: Mark Charlebois <charl...@gmail.com>
Signed-off-by: Behan Webster <beh...@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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