ARC: arch.h: setup ARCH_STACK_PTR_ALIGN correctly for 64 bit

Stack is aligned by 8 for 64 bit ISA and 4 for 32 bit ISA.

Signed-off-by: Eugeniy Paltsev <[email protected]>
Signed-off-by: Evgeniy Paltsev <[email protected]>

Author: evgeniy-paltsev

include/arch/arc/arch.h

@@ -48,7 +48,11 @@
 extern "C" {
 #endif
 
+#ifdef CONFIG_64BIT
+#define ARCH_STACK_PTR_ALIGN	8
+#else
 #define ARCH_STACK_PTR_ALIGN	4
+#endif /* CONFIG_64BIT */
 
 /* Indicate, for a minimally sized MPU region, how large it must be and what
  * its base address must be aligned to.