o New memset. Fastest in town for size > 6 bytes.

 o New clear_user.
 o Memcpy now efficiently copies the (src^dest)&3 != 0.
 o Memmove new correctly deals with overlaps
 o Rewrite csum_partial in assembler.
 o Rewrte csum_partial_from_user in assembler.
 o __copy_user is now integrated with memcpy.
 o get_user now returns a zero value on error.
 o copy_from_user now clears the destination buffer on error.
 o strncpy_user now has a more efficient caller routine.
 o strlen_user now has a more efficient caller routines and is faster.
 o The unaligned handler is now much cleaner.  It's now also save from
   interrupt.  Some more esotheric bugs fixed as well.
 o Don't export bcopy anymore, it's now a inline function.
 o Delete ancient junk from the first days of Linux/MIPS.
 o Delete dead code in indy_sc.c.
 o Including the IDE driver doesn't crash an Indy anymore.
 o Eleminate active_ds.  We now use current_ds directly in the thread
   structure which is faster and threadsafe.  Saves almost 2kb on the
   kernel.
 o Serial console should work again.

1 files changed, 8 insertions, 16 deletions

diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index b554cad39..7ea3017e5 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -8,7 +8,7 @@
  * Copyright 1994, 1995, 1996, 1997 by Ralf Baechle
  * Modified for R3000 by Paul M. Antoine, 1995, 1996
  *
- * $Id: traps.c,v 1.9 1998/03/27 04:47:56 ralf Exp $
+ * $Id: traps.c,v 1.13 1998/04/04 13:59:39 ralf Exp $
  */
 #include <linux/config.h>
 #include <linux/init.h>
@@ -387,9 +387,8 @@ void do_vcei(struct pt_regs *regs)
 {
 	lock_kernel();
 	/*
-	 * Theory says this exception doesn't happen.
-	 *
-	 * Murphy is right.  It does happen ...
+	 * Only possible on R4[04]00[SM]C. No handler because I don't have
+	 * such a cpu.  Theory says this exception doesn't happen.
 	 */
 	panic("Caught VCEI exception - should not happen");
 	unlock_kernel();
@@ -399,11 +398,10 @@ void do_vced(struct pt_regs *regs)
 {
 	lock_kernel();
 	/*
-	 * Theory says this exception doesn't happen.
-	 *
-	 * Murphy is right.  It does happen ...
+	 * Only possible on R4[04]00[SM]C. No handler because I don't have
+	 * such a cpu.  Theory says this exception doesn't happen.
 	 */
-	panic("Caught VCED exception - should not happen");
+	panic("Caught VCE exception - should not happen");
 	unlock_kernel();
 }
 
@@ -547,14 +545,8 @@ __initfunc(void trap_init(void))
 	case CPU_R4400MC:
 	case CPU_R4000SC:
 	case CPU_R4400SC:
-		/*
-		 * The following won't work because we _cannot_ perform any
-		 * load/store before the VCE handler.  We deal with this
-		 * by checking for for vced / vcei exceptions before doing
-		 * the generic exception handling thing.  This costs us
-		 * several instructions, therefore there should be a special
-		 * handler for those CPUs which have these exceptions.
-		 * 
+		/* XXX The following won't work because we _cannot_
+		 * XXX perform any load/store before the VCE handler.
 		 */
 		set_except_vector(14, handle_vcei);
 		set_except_vector(31, handle_vced);