[PATCH v2 6/7] arm: LLVMLinux: Use current_stack_pointer in unwind_backtrace
From: Behan Webster
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
Signed-off-by: Mark Charlebois
Reviewed-by: Jan-Simon Möller
---
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 a61a1df..caea23b 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);
@@ -485,7 +484,7 @@ void unwind_backtrace(struct pt_regs *regs, struct
task_struct *tsk)
frame.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
--
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[PATCH v2 6/7] arm: LLVMLinux: Use current_stack_pointer in unwind_backtrace
From: Behan Webster beh...@converseincode.com
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 beh...@converseincode.com
Signed-off-by: Mark Charlebois charl...@gmail.com
Reviewed-by: Jan-Simon Möller dl...@gmx.de
---
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 a61a1df..caea23b 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);
@@ -485,7 +484,7 @@ void unwind_backtrace(struct pt_regs *regs, struct
task_struct *tsk)
frame.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
--
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