Commit 26fe19f7 authored by Robin Getz's avatar Robin Getz Committed by Bryan Wu
Browse files

Blackfin arch: Update some inline assembly, tweak some register constraints 



Signed-off-by: default avatarRobin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
parent 2377feb4

arch/blackfin/include/asm/bfrom.h

+5 −0
Original line number Diff line number Diff line
@@ -43,6 +43,11 @@ __attribute__((__noreturn__)) 
static inline void bfrom_SoftReset(void *new_stack)

{

	while (1)

		/*

		 * We don't declare the SP as clobbered on purpose, since

		 * it confuses the heck out of the compiler, and this function

		 * never returns

		 */

		__asm__ __volatile__(

			"sp = %[stack];"

			"jump (%[bfrom_syscontrol]);"

arch/blackfin/include/asm/system.h

+4 −4
Original line number Diff line number Diff line
@@ -44,10 +44,10 @@ 
/*

 * Force strict CPU ordering.

 */

#define nop()  asm volatile ("nop;\n\t"::)

#define mb()   asm volatile (""   : : :"memory")

#define rmb()  asm volatile (""   : : :"memory")

#define wmb()  asm volatile (""   : : :"memory")

#define nop()  __asm__ __volatile__ ("nop;\n\t" : : )

#define mb()   __asm__ __volatile__ (""   : : : "memory")

#define rmb()  __asm__ __volatile__ (""   : : : "memory")

#define wmb()  __asm__ __volatile__ (""   : : : "memory")

#define set_mb(var, value) do { (void) xchg(&var, value); } while (0)

#define read_barrier_depends() 		do { } while(0)

arch/blackfin/include/asm/thread_info.h

+1 −1
Original line number Diff line number Diff line
@@ -91,7 +91,7 @@ __attribute_const__ 
static inline struct thread_info *current_thread_info(void)

{

	struct thread_info *ti;

      __asm__("%0 = sp;": "=&d"(ti):

      __asm__("%0 = sp;" : "=da"(ti) :

	);

	return (struct thread_info *)((long)ti & ~((long)THREAD_SIZE-1));

}