openwrt-xburst/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	2007-05-20 01:46:35.000000000 +0200
+++ linux-2.6.19.2/arch/cris/arch-v10/lib/memset.c	2007-05-20 01:51:47.000000000 +0200
@@ -29,224 +29,21 @@
 
 #include <linux/types.h>
 
-/* No, there's no macro saying 12*4, since it is "hard" to get it into
-   the asm in a good way.  Thus better to expose the problem everywhere.
-   */
 
-/* Assuming 1 cycle per dword written or read (ok, not really true), and
-   one per instruction, then 43+3*(n/48-1) <= 24+24*(n/48-1)
-   so n >= 45.7; n >= 0.9; we win on the first full 48-byte block to set. */
-
-#define ZERO_BLOCK_SIZE (1*12*4)
-
-void *memset(void *pdst,
-             int c,
-             size_t plen)
+/**
+ * memset - Fill a region of memory with the given value
+ * @s: Pointer to the start of the area.
+ * @c: The byte to fill the area with
+ * @count: The size of the area.
+ *
+ * Do not use memset() to access IO space, use memset_io() instead.
+ */
+void *memset(void *s, int c, size_t count)
 {
-  /* Ok.  Now we want the parameters put in special registers.
-     Make sure the compiler is able to make something useful of this. */
-
-  register char *return_dst __asm__ ("r10") = pdst;
-  register int n __asm__ ("r12") = plen;
-  register int lc __asm__ ("r11") = c;
-
-  /* Most apps use memset sanely.  Only those memsetting about 3..4
-     bytes or less get penalized compared to the generic implementation
-     - and that's not really sane use. */
-
-  /* Ugh.  This is fragile at best.  Check with newer GCC releases, if
-     they compile cascaded "x |= x << 8" sanely! */
-  __asm__("movu.b %0,$r13\n\t"
-          "lslq 8,$r13\n\t"
-	  "move.b %0,$r13\n\t"
-	  "move.d $r13,%0\n\t"
-	  "lslq 16,$r13\n\t"
-	  "or.d $r13,%0"
-          : "=r" (lc) : "0" (lc) : "r13");
-
-  {
-    register char *dst __asm__ ("r13") = pdst;
- 
-  /* This is NONPORTABLE, but since this whole routine is     */
-  /* grossly nonportable that doesn't matter.                 */
-
-  if (((unsigned long) pdst & 3) != 0
-     /* Oops! n=0 must be a legal call, regardless of alignment. */
-      && n >= 3)
-  {
-    if ((unsigned long)dst & 1)
-    {
-      *dst = (char) lc;
-      n--;
-      dst++;
-    }
-
-    if ((unsigned long)dst & 2)
-    {
-      *(short *)dst = lc;
-      n -= 2;
-      dst += 2;
-    }
-  }
-
-  /* Now the fun part.  For the threshold value of this, check the equation
-     above. */
-  /* Decide which copying method to use. */
-  if (n >= ZERO_BLOCK_SIZE)
-  {
-    /* For large copies we use 'movem' */
-
-  /* It is not optimal to tell the compiler about clobbering any
-     registers; that will move the saving/restoring of those registers
-     to the function prologue/epilogue, and make non-movem sizes
-     suboptimal.
-
-      This method is not foolproof; it assumes that the "asm reg"
-     declarations at the beginning of the function really are used
-     here (beware: they may be moved to temporary registers).
-      This way, we do not have to save/move the registers around into
-     temporaries; we can safely use them straight away.
-
-      If you want to check that the allocation was right; then
-      check the equalities in the first comment.  It should say
-      "r13=r13, r12=r12, r11=r11" */
-    __asm__ volatile ("
-        ;; Check that the following is true (same register names on
-        ;; both sides of equal sign, as in r8=r8):
-        ;; %0=r13, %1=r12, %4=r11
-        ;;
-	;; Save the registers we'll clobber in the movem process
-	;; on the stack.  Don't mention them to gcc, it will only be
-	;; upset.
-	subq 	11*4,$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
-	
-        ;; 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));
-    
-  }
-
-    /* Either we directly starts copying, using dword copying
-       in a loop, or we copy as much as possible with 'movem' 
-       and then the last block (<44 bytes) is copied here.
-       This will work since 'movem' will have updated src,dst,n. */
-
-    while ( n >= 16 )
-    {
-      *((long*)dst)++ = lc;
-      *((long*)dst)++ = lc;
-      *((long*)dst)++ = lc;
-      *((long*)dst)++ = lc;
-      n -= 16;
-    }
+	char *xs = s;
 
-    /* A switch() is definitely the fastest although it takes a LOT of code.
-     * Particularly if you inline code this.
-     */
-    switch (n)
-    {
-      case 0:
-        break;
-      case 1:
-        *(char*)dst = (char) lc;
-        break;
-      case 2:
-        *(short*)dst = (short) lc;
-        break;
-      case 3:
-        *((short*)dst)++ = (short) lc;
-        *(char*)dst = (char) lc;
-        break;
-      case 4:
-        *((long*)dst)++ = lc;
-        break;
-      case 5:
-        *((long*)dst)++ = lc;
-        *(char*)dst = (char) lc;
-        break;
-      case 6:
-        *((long*)dst)++ = lc;
-        *(short*)dst = (short) lc;
-        break;
-      case 7:
-        *((long*)dst)++ = lc;
-        *((short*)dst)++ = (short) lc;
-        *(char*)dst = (char) lc;
-        break;
-      case 8:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        break;
-      case 9:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *(char*)dst = (char) lc;
-        break;
-      case 10:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *(short*)dst = (short) lc;
-        break;
-      case 11:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((short*)dst)++ = (short) lc;
-        *(char*)dst = (char) lc;
-        break;
-      case 12:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        break;
-      case 13:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *(char*)dst = (char) lc;
-        break;
-      case 14:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *(short*)dst = (short) lc;
-        break;
-      case 15:
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((long*)dst)++ = lc;
-        *((short*)dst)++ = (short) lc;
-        *(char*)dst = (char) lc;
-        break;
-    }
-  }
+	while (count--)
+		*xs++ = c;
+	return s;
+}
 
-  return return_dst; /* destination pointer. */
-} /* memset() */
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	2007-05-20 01:46:35.000000000 +0200
+++ linux-2.6.19.2/arch/cris/arch-v10/lib/string.c	2007-05-20 01:51:19.000000000 +0200
@@ -33,193 +33,21 @@
 
 #include <linux/types.h>
 
-void *memcpy(void *pdst,
-             const void *psrc,
-             size_t pn)
+ /**
+ * memcpy - Copy one area of memory to another
+ * @dest: Where to copy to
+ * @src: Where to copy from
+ * @count: The size of the area.
+ *
+ * You should not use this function to access IO space, use memcpy_toio()
+ * or memcpy_fromio() instead.
+ */
+void *memcpy(void *dest, const void *src, size_t count)
 {
-  /* Ok.  Now we want the parameters put in special registers.
-     Make sure the compiler is able to make something useful of this.
-      As it is now: r10 -> r13; r11 -> r11 (nop); r12 -> r12 (nop).
+	char *tmp = dest;
+	const char *s = src;
 
-     If gcc was allright, it really would need no temporaries, and no
-     stack space to save stuff on. */
-
-  register void *return_dst __asm__ ("r10") = pdst;
-  register char *dst __asm__ ("r13") = pdst;
-  register const char *src __asm__ ("r11") = psrc;
-  register int n __asm__ ("r12") = pn;
-  
- 
-  /* When src is aligned but not dst, this makes a few extra needless
-     cycles.  I believe it would take as many to check that the
-     re-alignment was unnecessary.  */
-  if (((unsigned long) dst & 3) != 0
-      /* Don't align if we wouldn't copy more than a few bytes; so we
-	 don't have to check further for overflows.  */
-      && n >= 3)
-  {
-    if ((unsigned long) dst & 1)
-    {
-      n--;
-      *(char*)dst = *(char*)src;
-      src++;
-      dst++;
-    }
-
-    if ((unsigned long) dst & 2)
-    {
-      n -= 2;
-      *(short*)dst = *(short*)src;
-      src += 2;
-      dst += 2;
-    }
-  }
-
-  /* Decide which copying method to use. */
-  if (n >= 44*2)                /* Break even between movem and
-                                   move16 is at 38.7*2, but modulo 44. */
-  {
-    /* For large copies we use 'movem' */
-
-  /* It is not optimal to tell the compiler about clobbering any
-     registers; that will move the saving/restoring of those registers
-     to the function prologue/epilogue, and make non-movem sizes
-     suboptimal.
-
-      This method is not foolproof; it assumes that the "asm reg"
-     declarations at the beginning of the function really are used
-     here (beware: they may be moved to temporary registers).
-      This way, we do not have to save/move the registers around into
-     temporaries; we can safely use them straight away.
-
-      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" 
-
-     /* Outputs */ : "=r" (dst), "=r" (src), "=r" (n) 
-     /* Inputs */ : "0" (dst), "1" (src), "2" (n));
-    
-  }
-
-  /* Either we directly starts copying, using dword copying
-     in a loop, or we copy as much as possible with 'movem' 
-     and then the last block (<44 bytes) is copied here.
-     This will work since 'movem' will have updated src,dst,n. */
-
-  while ( n >= 16 )
-  {
-    *((long*)dst)++ = *((long*)src)++;
-    *((long*)dst)++ = *((long*)src)++;
-    *((long*)dst)++ = *((long*)src)++;
-    *((long*)dst)++ = *((long*)src)++;
-    n -= 16;
-  }
-
-  /* A switch() is definitely the fastest although it takes a LOT of code.
-   * Particularly if you inline code this.
-   */
-  switch (n)
-  {
-    case 0:
-      break;
-    case 1:
-      *(char*)dst = *(char*)src;
-      break;
-    case 2:
-      *(short*)dst = *(short*)src;
-      break;
-    case 3:
-      *((short*)dst)++ = *((short*)src)++;
-      *(char*)dst = *(char*)src;
-      break;
-    case 4:
-      *((long*)dst)++ = *((long*)src)++;
-      break;
-    case 5:
-      *((long*)dst)++ = *((long*)src)++;
-      *(char*)dst = *(char*)src;
-      break;
-    case 6:
-      *((long*)dst)++ = *((long*)src)++;
-      *(short*)dst = *(short*)src;
-      break;
-    case 7:
-      *((long*)dst)++ = *((long*)src)++;
-      *((short*)dst)++ = *((short*)src)++;
-      *(char*)dst = *(char*)src;
-      break;
-    case 8:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      break;
-    case 9:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *(char*)dst = *(char*)src;
-      break;
-    case 10:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *(short*)dst = *(short*)src;
-      break;
-    case 11:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((short*)dst)++ = *((short*)src)++;
-      *(char*)dst = *(char*)src;
-      break;
-    case 12:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      break;
-    case 13:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *(char*)dst = *(char*)src;
-      break;
-    case 14:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *(short*)dst = *(short*)src;
-      break;
-    case 15:
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((long*)dst)++ = *((long*)src)++;
-      *((short*)dst)++ = *((short*)src)++;
-      *(char*)dst = *(char*)src;
-      break;
-  }
-
-  return return_dst; /* destination pointer. */
-} /* memcpy() */
+	while (count--)
+		*tmp++ = *s++;
+	return dest;
+} 
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	2007-05-16 22:11:26.000000000 +0200
+++ linux-2.6.19.2/arch/cris/arch-v10/lib/usercopy.c	2007-05-16 23:17:41.000000000 +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");