m68k: switch to generic extable.h

Signed-off-by: Al Viro <[e-mail]>

arch/m68k/include/asm/Kbuild

···
 generic-y += emergency-restart.h
 generic-y += errno.h
 generic-y += exec.h
+generic-y += extable.h
 generic-y += futex.h
 generic-y += hw_irq.h
 generic-y += ioctl.h

arch/m68k/include/asm/processor.h

···
 	wrusp(usp);
 }
 
-#ifdef CONFIG_MMU
-extern int handle_kernel_fault(struct pt_regs *regs);
-#else
-static inline  int handle_kernel_fault(struct pt_regs *regs)
-{
-	/* Any fault in kernel is fatal on non-mmu */
-	return 0;
-}
-#endif
-
 /* Forward declaration, a strange C thing */
 struct task_struct;
 

arch/m68k/include/asm/uaccess.h

···
 #include <asm/uaccess_mm.h>
 #endif
 
+#include <asm/extable.h>
 #ifdef CONFIG_CPU_HAS_NO_UNALIGNED
 #include <asm-generic/uaccess-unaligned.h>
 #else

arch/m68k/include/asm/uaccess_mm.h

···
 #define	MOVES	"move"
 #endif
 
-/*
- * The exception table consists of pairs of addresses: the first is the
- * address of an instruction that is allowed to fault, and the second is
- * the address at which the program should continue.  No registers are
- * modified, so it is entirely up to the continuation code to figure out
- * what to do.
- *
- * All the routines below use bits of fixup code that are out of line
- * with the main instruction path.  This means when everything is well,
- * we don't even have to jump over them.  Further, they do not intrude
- * on our cache or tlb entries.
- */
-
-struct exception_table_entry
-{
-	unsigned long insn, fixup;
-};
-
 extern int __put_user_bad(void);
 extern int __get_user_bad(void);
 

arch/m68k/include/asm/uaccess_no.h

···
 }
 
 /*
- * The exception table consists of pairs of addresses: the first is the
- * address of an instruction that is allowed to fault, and the second is
- * the address at which the program should continue.  No registers are
- * modified, so it is entirely up to the continuation code to figure out
- * what to do.
- *
- * All the routines below use bits of fixup code that are out of line
- * with the main instruction path.  This means when everything is well,
- * we don't even have to jump over them.  Further, they do not intrude
- * on our cache or tlb entries.
- */
-
-struct exception_table_entry
-{
-	unsigned long insn, fixup;
-};
-
-
-/*
  * These are the main single-value transfer routines.  They automatically
  * use the right size if we just have the right pointer type.
  */

arch/m68k/kernel/signal.c

···
 	return frame_size_change[f];
 }
 
-int handle_kernel_fault(struct pt_regs *regs)
+int fixup_exception(struct pt_regs *regs)
 {
 	const struct exception_table_entry *fixup;
 	struct pt_regs *tregs;

arch/m68k/kernel/traps.c

···
 			/* traced a trapping instruction on a 68020/30,
 			 * real exception will be executed afterwards.
 			 */
-		} else if (!handle_kernel_fault(&fp->ptregs))
-			bad_super_trap(fp);
+			return;
+		}
+#ifdef CONFIG_MMU
+		if (fixup_exception(&fp->ptregs))
+			return;
+#endif
+		bad_super_trap(fp);
 		return;
 	}
 

arch/m68k/mm/fault.c

···
 		force_sig_info(siginfo.si_signo,
 			       &siginfo, current);
 	} else {
-		if (handle_kernel_fault(regs))
+		if (fixup_exception(regs))
 			return -1;
 
 		//if (siginfo.si_signo == SIGBUS)