[PARISC] Use MFIA in current_text_addr on pa2.0 processors

 * Default implementation of macro that returns current

 * instruction pointer ("program counter").

 */

/* We cannot use MFIA as it was added for PA2.0 - prumpf

   At one point there were no "0f/0b" type local symbols in gas for

   PA-RISC.  This is no longer true, but this still seems like the

   nicest way to implement this. */

#define current_text_addr() ({ void *pc; __asm__("\n\tblr 0,%0\n\tnop":"=r" (pc)); pc; })

#ifdef CONFIG_PA20

#define current_ia(x)	__asm__("mfia %0" : "=r"(x))

#else /* mfia added in pa2.0 */

#define current_ia(x)	__asm__("blr 0,%0\n\tnop" : "=r"(x))

#endif

#define current_text_addr() ({ void *pc; current_ia(pc); pc; })

#define TASK_SIZE               (current->thread.task_size)

#define TASK_UNMAPPED_BASE      (current->thread.map_base)