diff options
| author | Behan Webster | 2014-08-27 05:29:34 +0100 |
|---|---|---|
| committer | Will Deacon | 2014-09-08 14:39:19 +0100 |
| commit | a4ceab1adbe960c781e9e2f659d7f7840eefd786 (patch) | |
| tree | 18201ab3b1987ab9e8b41ee8c66363a83276bfd2 /arch/arm64/kernel | |
| parent | 34ccf8f455f1ae7761810a74308f82daca67ced1 (diff) | |
arm64: LLVMLinux: Use global stack pointer in return_address()
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>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/return_address.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm64/kernel/return_address.c b/arch/arm64/kernel/return_address.c index 89102a6ffad5..6c4fd2810ecb 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); |