[PATCH V2 3/6] arm64: LLVMLinux: Calculate current_thread_info from current_stack_pointer
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
Reviewed-by: Olof Johansson
Acked-by: Will Deacon
---
arch/arm64/include/asm/thread_info.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/include/asm/thread_info.h
b/arch/arm64/include/asm/thread_info.h
index 356e037..459bf8e 100644
--- a/arch/arm64/include/asm/thread_info.h
+++ b/arch/arm64/include/asm/thread_info.h
@@ -80,8 +80,8 @@ static inline struct thread_info *current_thread_info(void)
__attribute_const__;
static inline struct thread_info *current_thread_info(void)
{
- register unsigned long sp asm ("sp");
- return (struct thread_info *)(sp & ~(THREAD_SIZE - 1));
+ return (struct thread_info *)
+ (current_stack_pointer & ~(THREAD_SIZE - 1));
}
#define thread_saved_pc(tsk) \
--
1.9.1
--
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[PATCH V2 3/6] arm64: LLVMLinux: Calculate current_thread_info from current_stack_pointer
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
Reviewed-by: Olof Johansson o...@lixom.net
Acked-by: Will Deacon will.dea...@arm.com
---
arch/arm64/include/asm/thread_info.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/include/asm/thread_info.h
b/arch/arm64/include/asm/thread_info.h
index 356e037..459bf8e 100644
--- a/arch/arm64/include/asm/thread_info.h
+++ b/arch/arm64/include/asm/thread_info.h
@@ -80,8 +80,8 @@ static inline struct thread_info *current_thread_info(void)
__attribute_const__;
static inline struct thread_info *current_thread_info(void)
{
- register unsigned long sp asm (sp);
- return (struct thread_info *)(sp ~(THREAD_SIZE - 1));
+ return (struct thread_info *)
+ (current_stack_pointer ~(THREAD_SIZE - 1));
}
#define thread_saved_pc(tsk) \
--
1.9.1
--
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