Subject: [PATCH 3/4] arm64: LLVMLinux: Calculate current_thread_info from current_stack_pointer

From: [email-masked] (Behan Webster)
Date: Thu, 31 Jul 2014 09:04:25 -0700

On 07/30/14 22:31, Andreas F?rber wrote:
> Hi,
>
> Am 31.07.2014 01:57, schrieb behanw at converseincode.com:
>> From: Behan Webster <[email-masked]>
>>
>> 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 <[email-masked]>
>> Signed-off-by: Mark Charlebois <[email-masked]>
>> Reviewed-by: Jan-Simon M??ller <[email-masked]>
> Something went wrong with ? encoding here and in 2/4.
Yeah. That keeps happening. :(

Thanks.

>> ---
>>   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 e6b6094..c2432d2 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 *) \
> This is not a macro, so \ seems superfluous.
Doh. Indeed. Will fix.

Behan

-- 
Behan Webster
behanw at converseincode.com