[PATCH V2 6/6] arm64: LLVMLinux: Use global stack pointer in return_address()
STALE4422d
From: behanw at converseincode.com <hidden>
Date: 2014-08-27 04:30:00
Also in:
lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
Revision v2 of 6 in this series.
Revisions (6)
From: Behan Webster <redacted> 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 [off-list ref] Signed-off-by: Mark Charlebois <redacted> Signed-off-by: Behan Webster <redacted> --- 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