openwrt/target/linux/etrax-2.6/patches/cris/006-gcc-4.patch

diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/lib/memset.c linux-2.6.19.2/arch/cris/arch-v10/lib/memset.c
--- linux-2.6.19.2.orig/arch/cris/arch-v10/lib/memset.c	2007-06-03 13:59:39.000000000 +0200
+++ linux-2.6.19.2/arch/cris/arch-v10/lib/memset.c	2007-06-03 14:11:43.000000000 +0200
@@ -110,45 +110,28 @@
       If you want to check that the allocation was right; then
       check the equalities in the first comment.  It should say
       "r13=r13, r12=r12, r11=r11" */
-    __asm__ volatile ("
-        ;; Check that the following is true (same register names on
-        ;; both sides of equal sign, as in r8=r8):
-        ;; %0=r13, %1=r12, %4=r11
-        ;;
-	;; Save the registers we'll clobber in the movem process
-	;; on the stack.  Don't mention them to gcc, it will only be
-	;; upset.
-	subq 	11*4,$sp
-        movem   $r10,[$sp]
-
-        move.d  $r11,$r0
-        move.d  $r11,$r1
-        move.d  $r11,$r2
-        move.d  $r11,$r3
-        move.d  $r11,$r4
-        move.d  $r11,$r5
-        move.d  $r11,$r6
-        move.d  $r11,$r7
-        move.d  $r11,$r8
-        move.d  $r11,$r9
-        move.d  $r11,$r10
-
-        ;; Now we've got this:
-	;; r13 - dst
-	;; r12 - n
+    __asm__ volatile (
+	"subq 	11*4,$sp\n\t"
+        "movem   $r10,[$sp]\n\t"
+        "move.d  $r11,$r0\n\t"
+        "move.d  $r11,$r1\n\t"
+        "move.d  $r11,$r2\n\t"
+        "move.d  $r11,$r3\n\t"
+        "move.d  $r11,$r4\n\t"
+        "move.d  $r11,$r5\n\t"
+        "move.d  $r11,$r6\n\t"
+        "move.d  $r11,$r7\n\t"
+        "move.d  $r11,$r8\n\t"
+        "move.d  $r11,$r9\n\t"
+        "move.d  $r11,$r10\n\t"
+        "subq    12*4,$r12\n\t"
+"0:\n\t"
+   	"subq   12*4,$r12\n\t"
+        "bge     0b\n\t"
+	"movem	$r11,[$r13+]\n\t"
+        "addq   12*4,$r12\n\t"
+        "movem [$sp+],$r10" 
 	
-        ;; Update n for the first loop
-        subq    12*4,$r12
-0:
-        subq   12*4,$r12
-        bge     0b
-	movem	$r11,[$r13+]
-
-        addq   12*4,$r12  ;; compensate for last loop underflowing n
-
-	;; Restore registers from stack
-        movem [$sp+],$r10" 
-
      /* Outputs */ : "=r" (dst), "=r" (n)
      /* Inputs */ : "0" (dst), "1" (n), "r" (lc));
     
@@ -161,10 +144,14 @@
 
     while ( n >= 16 )
     {
-      *((long*)dst)++ = lc;
-      *((long*)dst)++ = lc;
-      *((long*)dst)++ = lc;
-      *((long*)dst)++ = lc;
+      *((long*)dst) = lc;
+      dst+=4;
+      *((long*)dst) = lc;
+      dst+=4;
+      *((long*)dst) = lc;
+      dst+=4;
+      *((long*)dst) = lc;
+      dst+=4;
       n -= 16;
     }
 
@@ -182,67 +169,95 @@
         *(short*)dst = (short) lc;
         break;
       case 3:
-        *((short*)dst)++ = (short) lc;
+        *((short*)dst) = (short) lc;
+	dst+=2;
         *(char*)dst = (char) lc;
         break;
       case 4:
-        *((long*)dst)++ = lc;
+        *((long*)dst) = lc;
+	dst+=4;
         break;
       case 5:
-        *((long*)dst)++ = lc;
+        *((long*)dst) = lc;
+	dst+=4;
         *(char*)dst = (char) lc;
         break;
       case 6:
-        *((long*)dst)++ = lc;
+        *((long*)dst) = lc;
+	dst+=4;
         *(short*)dst = (short) lc;
         break;
       case 7:
-        *((long*)dst)++ = lc;
-        *((short*)dst)++ = (short) lc;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((short*)dst) = (short) lc;
+	dst+=2;
         *(char*)dst = (char) lc;
         break;
       case 8:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
         break;
       case 9:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
         *(char*)dst = (char) lc;
         break;
       case 10:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
         *(short*)dst = (short) lc;
         break;
       case 11:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((short*)dst)++ = (short) lc;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((short*)dst) = (short) lc;
+	dst+=2;
         *(char*)dst = (char) lc;
         break;
       case 12:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
         break;
       case 13:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
         *(char*)dst = (char) lc;
         break;
       case 14:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
         *(short*)dst = (short) lc;
         break;
       case 15:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((short*)dst)++ = (short) lc;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((long*)dst) = lc;
+	dst+=4;
+        *((short*)dst) = (short) lc;
+	dst+=2;
         *(char*)dst = (char) lc;
         break;
     }
diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/lib/string.c linux-2.6.19.2/arch/cris/arch-v10/lib/string.c
--- linux-2.6.19.2.orig/arch/cris/arch-v10/lib/string.c	2007-06-03 13:59:39.000000000 +0200
+++ linux-2.6.19.2/arch/cris/arch-v10/lib/string.c	2007-06-03 14:21:02.000000000 +0200
@@ -95,37 +95,19 @@
       If you want to check that the allocation was right; then
       check the equalities in the first comment.  It should say
       "r13=r13, r11=r11, r12=r12" */
-    __asm__ volatile ("
-        ;; Check that the following is true (same register names on
-        ;; both sides of equal sign, as in r8=r8):
-        ;; %0=r13, %1=r11, %2=r12
-        ;;
-	;; Save the registers we'll use in the movem process
-	;; on the stack.
-	subq 	11*4,$sp
-	movem	$r10,[$sp]
-
-        ;; Now we've got this:
-	;; r11 - src
-	;; r13 - dst
-	;; r12 - n
-	
-        ;; Update n for the first loop
-        subq    44,$r12
-0:
-	movem	[$r11+],$r10
-        subq   44,$r12
-        bge     0b
-	movem	$r10,[$r13+]
-
-        addq   44,$r12  ;; compensate for last loop underflowing n
-
-	;; Restore registers from stack
-        movem [$sp+],$r10" 
-
+    __asm__ volatile (
+	"subq 	11*4,$sp\n\t"
+	"movem	$r10,[$sp]\n\t"
+        "subq    44,$r12\n\t"
+"0:\n\t"
+	"movem	[$r11+],$r10\n\t"
+        "subq   44,$r12\n\t"
+        "bge     0b\n\t"
+	"movem	$r10,[$r13+]\n\t"
+        "addq   44,$r12\n\t"
+        "movem [$sp+],$r10\n\t"
      /* Outputs */ : "=r" (dst), "=r" (src), "=r" (n) 
      /* Inputs */ : "0" (dst), "1" (src), "2" (n));
-    
   }
 
   /* Either we directly starts copying, using dword copying
@@ -135,10 +117,14 @@
 
   while ( n >= 16 )
   {
-    *((long*)dst)++ = *((long*)src)++;
-    *((long*)dst)++ = *((long*)src)++;
-    *((long*)dst)++ = *((long*)src)++;
-    *((long*)dst)++ = *((long*)src)++;
+    *((long*)dst) = *((long*)src);
+    src+=4;dst+=4;
+    *((long*)dst) = *((long*)src);
+    src+=4;dst+=4;
+    *((long*)dst) = *((long*)src);
+    src+=4;dst+=4;
+    *((long*)dst) = *((long*)src);
+    src+=4;dst+=4;
     n -= 16;
   }
 
@@ -156,67 +142,95 @@
       *(short*)dst = *(short*)src;
       break;
     case 3:
-      *((short*)dst)++ = *((short*)src)++;
+      *((short*)dst) = *((short*)src);
+      src+=2;dst+=2;
       *(char*)dst = *(char*)src;
       break;
     case 4:
-      *((long*)dst)++ = *((long*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
       break;
     case 5:
-      *((long*)dst)++ = *((long*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
       *(char*)dst = *(char*)src;
       break;
     case 6:
-      *((long*)dst)++ = *((long*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
       *(short*)dst = *(short*)src;
       break;
     case 7:
-      *((long*)dst)++ = *((long*)src)++;
-      *((short*)dst)++ = *((short*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((short*)dst) = *((short*)src);
+      src+=2;dst+=2;
       *(char*)dst = *(char*)src;
       break;
     case 8:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
       break;
     case 9:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
       *(char*)dst = *(char*)src;
       break;
     case 10:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
       *(short*)dst = *(short*)src;
       break;
     case 11:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((short*)dst)++ = *((short*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((short*)dst) = *((short*)src);
+      src+=2;dst+=2;
       *(char*)dst = *(char*)src;
       break;
     case 12:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
       break;
     case 13:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
       *(char*)dst = *(char*)src;
       break;
     case 14:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
       *(short*)dst = *(short*)src;
       break;
     case 15:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((short*)dst)++ = *((short*)src)++;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((long*)dst) = *((long*)src);
+      src+=4;dst+=4;
+      *((short*)dst) = *((short*)src);
+      src+=2;dst+=2;
       *(char*)dst = *(char*)src;
       break;
   }
diff -urN linux-2.6.19.2.orig/arch/cris/arch-v10/lib/usercopy.c linux-2.6.19.2/arch/cris/arch-v10/lib/usercopy.c
--- linux-2.6.19.2.orig/arch/cris/arch-v10/lib/usercopy.c	2007-06-03 13:59:39.000000000 +0200
+++ linux-2.6.19.2/arch/cris/arch-v10/lib/usercopy.c	2007-06-03 14:25:55.000000000 +0200
@@ -88,63 +88,38 @@
        If you want to check that the allocation was right; then
        check the equalities in the first comment.  It should say
        "r13=r13, r11=r11, r12=r12".  */
-    __asm__ volatile ("\
-	.ifnc %0%1%2%3,$r13$r11$r12$r10					\n\
-	.err								\n\
-	.endif								\n\
-
-	;; Save the registers we'll use in the movem process
-	;; on the stack.
-	subq	11*4,$sp
-	movem	$r10,[$sp]
-
-	;; Now we've got this:
-	;; r11 - src
-	;; r13 - dst
-	;; r12 - n
-
-	;; Update n for the first loop
-	subq	44,$r12
-
-; Since the noted PC of a faulting instruction in a delay-slot of a taken
-; branch, is that of the branch target, we actually point at the from-movem
-; for this case.  There is no ambiguity here; if there was a fault in that
-; instruction (meaning a kernel oops), the faulted PC would be the address
-; after *that* movem.
-
-0:
-	movem	[$r11+],$r10
-	subq   44,$r12
-	bge	0b
-	movem	$r10,[$r13+]
-1:
-	addq   44,$r12  ;; compensate for last loop underflowing n
-
-	;; Restore registers from stack
-	movem [$sp+],$r10
-2:
-	.section .fixup,\"ax\"
-
-; To provide a correct count in r10 of bytes that failed to be copied,
-; we jump back into the loop if the loop-branch was taken.  There is no
-; performance penalty for sany use; the program will segfault soon enough.
-
-3:
-	move.d [$sp],$r10
-	addq 44,$r10
-	move.d $r10,[$sp]
-	jump 0b
-4:
-	movem [$sp+],$r10
-	addq 44,$r10
-	addq 44,$r12
-	jump 2b
-
-	.previous
-	.section __ex_table,\"a\"
-	.dword 0b,3b
-	.dword 1b,4b
-	.previous"
+    __asm__ volatile (
+	".ifnc %0%1%2%3,$r13$r11$r12$r10	\n\t"	
+	".err				\n\t"		
+	".endif			\n\t"			
+	"subq	11*4,$sp\n\t"
+	"movem	$r10,[$sp]\n\t"
+	"subq	44,$r12\n\t"
+	"0:\n\t"
+	"movem	[$r11+],$r10\n\t"
+	"subq   44,$r12\n\t"
+	"bge	0b\n\t"
+	"movem	$r10,[$r13+]\n\t"
+	"1:\n\t"
+	"addq   44,$r12  \n\t"
+	"movem [$sp+],$r10\n\t"
+	"2:\n\t"
+	".section .fixup,\"ax\"\n\t"
+	"3:\n\t"
+	"move.d [$sp],$r10\n\t"
+	"addq 44,$r10\n\t"
+	"move.d $r10,[$sp]\n\t"
+	"jump 0b\n\t"
+	"4:\n\t"
+	"movem [$sp+],$r10\n\t"
+	"addq 44,$r10\n\t"
+	"addq 44,$r12\n\t"
+	"jump 2b\n\t"
+	".previous\n\t"
+	".section __ex_table,\"a\"\n\t"
+	".dword 0b,3b\n\t"
+	".dword 1b,4b\n\t"
+	".previous\n\t"
 
      /* Outputs */ : "=r" (dst), "=r" (src), "=r" (n), "=r" (retn)
      /* Inputs */ : "0" (dst), "1" (src), "2" (n), "3" (retn));
@@ -253,60 +228,32 @@
        If you want to check that the allocation was right; then
        check the equalities in the first comment.  It should say
        "r13=r13, r11=r11, r12=r12" */
-    __asm__ volatile ("
-	.ifnc %0%1%2%3,$r13$r11$r12$r10					\n\
-	.err								\n\
-	.endif								\n\
-
-	;; Save the registers we'll use in the movem process
-	;; on the stack.
-	subq	11*4,$sp
-	movem	$r10,[$sp]
-
-	;; Now we've got this:
-	;; r11 - src
-	;; r13 - dst
-	;; r12 - n
-
-	;; Update n for the first loop
-	subq	44,$r12
-0:
-	movem	[$r11+],$r10
-1:
-	subq   44,$r12
-	bge	0b
-	movem	$r10,[$r13+]
-
-	addq   44,$r12  ;; compensate for last loop underflowing n
-
-	;; Restore registers from stack
-	movem [$sp+],$r10
-4:
-	.section .fixup,\"ax\"
-
-;; Do not jump back into the loop if we fail.  For some uses, we get a
-;; page fault somewhere on the line.  Without checking for page limits,
-;; we don't know where, but we need to copy accurately and keep an
-;; accurate count; not just clear the whole line.  To do that, we fall
-;; down in the code below, proceeding with smaller amounts.  It should
-;; be kept in mind that we have to cater to code like what at one time
-;; was in fs/super.c:
-;;  i = size - copy_from_user((void *)page, data, size);
-;; which would cause repeated faults while clearing the remainder of
-;; the SIZE bytes at PAGE after the first fault.
-;; A caveat here is that we must not fall through from a failing page
-;; to a valid page.
-
-3:
-	movem  [$sp+],$r10
-	addq	44,$r12 ;; Get back count before faulting point.
-	subq	44,$r11 ;; Get back pointer to faulting movem-line.
-	jump	4b	;; Fall through, pretending the fault didn't happen.
-
-	.previous
-	.section __ex_table,\"a\"
-	.dword 1b,3b
-	.previous"
+    __asm__ volatile (
+	".ifnc %0%1%2%3,$r13$r11$r12$r10		\n\t"
+	".err					\n\t"	     
+	".endif				\n\t"		     
+	"subq	11*4,$sp\n\t"
+	"movem	$r10,[$sp]\n\t"
+	"subq	44,$r12\n\t"
+	"0:\n\t"
+	"movem	[$r11+],$r10\n\t"
+	"1:\n\t"
+	"subq   44,$r12\n\t"
+	"bge	0b\n\t"
+	"movem	$r10,[$r13+]\n\t"
+	"addq   44,$r12  \n\t"
+	"movem [$sp+],$r10\n\t"
+	"4:\n\t"
+	".section .fixup,\"ax\"\n\t"
+	"3:\n\t"
+	"movem  [$sp+],$r10\n\t"
+	"addq	44,$r12\n\t"
+	"subq	44,$r11\n\t"
+	"jump	4b	\n\t"
+	".previous\n\t"
+	".section __ex_table,\"a\"\n\t"
+	".dword 1b,3b\n\t"
+	".previous\n\t"
 
      /* Outputs */ : "=r" (dst), "=r" (src), "=r" (n), "=r" (retn)
      /* Inputs */ : "0" (dst), "1" (src), "2" (n), "3" (retn));
@@ -425,66 +372,50 @@
       If you want to check that the allocation was right; then
       check the equalities in the first comment.  It should say
       something like "r13=r13, r11=r11, r12=r12". */
-    __asm__ volatile ("
-	.ifnc %0%1%2,$r13$r12$r10					\n\
-	.err								\n\
-	.endif								\n\
-
-	;; Save the registers we'll clobber in the movem process
-	;; on the stack.  Don't mention them to gcc, it will only be
-	;; upset.
-	subq	11*4,$sp
-	movem	$r10,[$sp]
-
-	clear.d $r0
-	clear.d $r1
-	clear.d $r2
-	clear.d $r3
-	clear.d $r4
-	clear.d $r5
-	clear.d $r6
-	clear.d $r7
-	clear.d $r8
-	clear.d $r9
-	clear.d $r10
-	clear.d $r11
-
-	;; Now we've got this:
-	;; r13 - dst
-	;; r12 - n
-
-	;; Update n for the first loop
-	subq	12*4,$r12
-0:
-	subq   12*4,$r12
-	bge	0b
-	movem	$r11,[$r13+]
-1:
-	addq   12*4,$r12        ;; compensate for last loop underflowing n
-
-	;; Restore registers from stack
-	movem [$sp+],$r10
-2:
-	.section .fixup,\"ax\"
-3:
-	move.d [$sp],$r10
-	addq 12*4,$r10
-	move.d $r10,[$sp]
-	clear.d $r10
-	jump 0b
-
-4:
-	movem [$sp+],$r10
-	addq 12*4,$r10
-	addq 12*4,$r12
-	jump 2b
-
-	.previous
-	.section __ex_table,\"a\"
-	.dword 0b,3b
-	.dword 1b,4b
-	.previous"
-
+    __asm__ volatile (
+	".ifnc %0%1%2,$r13$r12$r10\n\t"
+	".err				\n\t"
+	".endif\n\t"
+	"subq	11*4,$sp\n\t"
+	"movem	$r10,[$sp]\n\t"
+	"clear.d $r0\n\t"
+	"clear.d $r1\n\t"
+	"clear.d $r2\n\t"
+	"clear.d $r3\n\t"
+	"clear.d $r4\n\t"
+	"clear.d $r5\n\t"
+	"clear.d $r6\n\t"
+	"clear.d $r7\n\t"
+	"clear.d $r8\n\t"
+	"clear.d $r9\n\t"
+	"clear.d $r10\n\t"
+	"clear.d $r11\n\t"
+	"subq	12*4,$r12\n\t"
+	"0:\n\t"
+	"subq   12*4,$r12\n\t"
+	"bge	0b\n\t"
+	"movem	$r11,[$r13+]\n\t"
+	"1:	\n\t"
+	"addq   12*4,$r12        \n\t"
+	"movem [$sp+],$r10\n\t"
+	"2:\n\t"
+	".section .fixup,\"ax\"\n\t"
+	"3:\n\t"
+	"move.d [$sp],$r10\n\t"
+	"addq 12*4,$r10\n\t"
+	"move.d $r10,[$sp]\n\t"
+	"clear.d $r10\n\t"
+	"jump 0b\n\t"
+	"4:\n\t"
+	"movem [$sp+],$r10\n\t"
+	"addq 12*4,$r10\n\t"
+	"addq 12*4,$r12\n\t"
+	"jump 2b\n\t"
+	".previous\n\t"
+	".section __ex_table,\"a\"\n\t"
+	".dword 0b,3b\n\t"
+	".dword 1b,4b\n\t"
+	".previous\n\t"
      /* Outputs */ : "=r" (dst), "=r" (n), "=r" (retn)
      /* Inputs */ : "0" (dst), "1" (n), "2" (retn)
      /* Clobber */ : "r11");