Move m68k from ports to libc

7 files changed, 541 insertions, 0 deletions

diff --git a/sysdeps/m68k/m680x0/m68020/Makefile b/sysdeps/m68k/m680x0/m68020/Makefile
new file mode 100644
index 0000000000..b17635467d
--- /dev/null
+++ b/sysdeps/m68k/m680x0/m68020/Makefile
@@ -0,0 +1,3 @@
+ifeq ($(subdir),db2)
+CPPFLAGS += -DHAVE_SPINLOCKS=1 -DHAVE_ASSEM_MC68020_GCC=1
+endif
diff --git a/sysdeps/m68k/m680x0/m68020/addmul_1.S b/sysdeps/m68k/m680x0/m68020/addmul_1.S
new file mode 100644
index 0000000000..5629202104
--- /dev/null
+++ b/sysdeps/m68k/m680x0/m68020/addmul_1.S
@@ -0,0 +1,88 @@
+/* mc68020 __mpn_addmul_1 -- Multiply a limb vector with a limb and add
+   the result to a second limb vector.
+
+Copyright (C) 1992-2014 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/*
+  INPUT PARAMETERS
+  res_ptr	(sp + 4)
+  s1_ptr	(sp + 8)
+  s1_size	(sp + 12)
+  s2_limb	(sp + 16)
+*/
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	TEXT
+ENTRY(__mpn_addmul_1)
+
+#define res_ptr a0
+#define s1_ptr a1
+#define s1_size d2
+#define s2_limb d4
+
+/* Save used registers on the stack.  */
+	moveml	R(d2)-R(d5),MEM_PREDEC(sp)
+	cfi_adjust_cfa_offset (4*4)
+	cfi_rel_offset (R(d2), 0)
+	cfi_rel_offset (R(d3), 4)
+	cfi_rel_offset (R(d4), 8)
+	cfi_rel_offset (R(d5), 12)
+
+/* Copy the arguments to registers.  Better use movem?  */
+	movel	MEM_DISP(sp,20),R(res_ptr)
+	movel	MEM_DISP(sp,24),R(s1_ptr)
+	movel	MEM_DISP(sp,28),R(s1_size)
+	movel	MEM_DISP(sp,32),R(s2_limb)
+
+	eorw	#1,R(s1_size)
+	clrl	R(d1)
+	clrl	R(d5)
+	lsrl	#1,R(s1_size)
+	bcc	L(L1)
+	subql	#1,R(s1_size)
+	subl	R(d0),R(d0)		/* (d0,cy) <= (0,0) */
+
+L(Loop:)
+	movel	MEM_POSTINC(s1_ptr),R(d3)
+	mulul	R(s2_limb),R(d1):R(d3)
+	addxl	R(d0),R(d3)
+	addxl	R(d5),R(d1)
+	addl	R(d3),MEM_POSTINC(res_ptr)
+L(L1:)	movel	MEM_POSTINC(s1_ptr),R(d3)
+	mulul	R(s2_limb),R(d0):R(d3)
+	addxl	R(d1),R(d3)
+	addxl	R(d5),R(d0)
+	addl	R(d3),MEM_POSTINC(res_ptr)
+
+	dbf	R(s1_size),L(Loop)
+	addxl	R(d5),R(d0)
+	subl	#0x10000,R(s1_size)
+	bcc	L(Loop)
+
+/* Restore used registers from stack frame.  */
+	moveml	MEM_POSTINC(sp),R(d2)-R(d5)
+	cfi_adjust_cfa_offset (-4*4)
+	cfi_restore (R(d2))
+	cfi_restore (R(d3))
+	cfi_restore (R(d4))
+	cfi_restore (R(d5))
+
+	rts
+END(__mpn_addmul_1)
diff --git a/sysdeps/m68k/m680x0/m68020/bits/atomic.h b/sysdeps/m68k/m680x0/m68020/bits/atomic.h
new file mode 100644
index 0000000000..0f081f169a
--- /dev/null
+++ b/sysdeps/m68k/m680x0/m68020/bits/atomic.h
@@ -0,0 +1,253 @@
+/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Schwab <schwab@suse.de>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdint.h>
+
+
+typedef int8_t atomic8_t;
+typedef uint8_t uatomic8_t;
+typedef int_fast8_t atomic_fast8_t;
+typedef uint_fast8_t uatomic_fast8_t;
+
+typedef int16_t atomic16_t;
+typedef uint16_t uatomic16_t;
+typedef int_fast16_t atomic_fast16_t;
+typedef uint_fast16_t uatomic_fast16_t;
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_t;
+typedef int_fast32_t atomic_fast32_t;
+typedef uint_fast32_t uatomic_fast32_t;
+
+typedef int64_t atomic64_t;
+typedef uint64_t uatomic64_t;
+typedef int_fast64_t atomic_fast64_t;
+typedef uint_fast64_t uatomic_fast64_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
+  ({ __typeof (*(mem)) __ret;						      \
+     __asm __volatile ("cas%.b %0,%2,%1"				      \
+		       : "=d" (__ret), "+m" (*(mem))			      \
+		       : "d" (newval), "0" (oldval));			      \
+     __ret; })
+
+#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
+  ({ __typeof (*(mem)) __ret;						      \
+     __asm __volatile ("cas%.w %0,%2,%1"				      \
+		       : "=d" (__ret), "+m" (*(mem))			      \
+		       : "d" (newval), "0" (oldval));			      \
+     __ret; })
+
+#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
+  ({ __typeof (*(mem)) __ret;						      \
+     __asm __volatile ("cas%.l %0,%2,%1"				      \
+		       : "=d" (__ret), "+m" (*(mem))			      \
+		       : "d" (newval), "0" (oldval));			      \
+     __ret; })
+
+# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
+  ({ __typeof (*(mem)) __ret;						      \
+     __typeof (mem) __memp = (mem);					      \
+     __asm __volatile ("cas2%.l %0:%R0,%1:%R1,(%2):(%3)"		      \
+		       : "=d" (__ret)					      \
+		       : "d" (newval), "r" (__memp),			      \
+			 "r" ((char *) __memp + 4), "0" (oldval)	      \
+		       : "memory");					      \
+     __ret; })
+
+#define atomic_exchange_acq(mem, newvalue) \
+  ({ __typeof (*(mem)) __result = *(mem);				      \
+     if (sizeof (*(mem)) == 1)						      \
+       __asm __volatile ("1: cas%.b %0,%2,%1;"				      \
+			 "   jbne 1b"					      \
+			 : "=d" (__result), "+m" (*(mem))		      \
+			 : "d" (newvalue), "0" (__result));		      \
+     else if (sizeof (*(mem)) == 2)					      \
+       __asm __volatile ("1: cas%.w %0,%2,%1;"				      \
+			 "   jbne 1b"					      \
+			 : "=d" (__result), "+m" (*(mem))		      \
+			 : "d" (newvalue), "0" (__result));		      \
+     else if (sizeof (*(mem)) == 4)					      \
+       __asm __volatile ("1: cas%.l %0,%2,%1;"				      \
+			 "   jbne 1b"					      \
+			 : "=d" (__result), "+m" (*(mem))		      \
+			 : "d" (newvalue), "0" (__result));		      \
+     else								      \
+       {								      \
+	 __typeof (mem) __memp = (mem);					      \
+	 __asm __volatile ("1: cas2%.l %0:%R0,%1:%R1,(%2):(%3);"	      \
+			   "   jbne 1b"					      \
+			   : "=d" (__result)				      \
+			   : "d" (newvalue), "r" (__memp),		      \
+			     "r" ((char *) __memp + 4), "0" (__result)	      \
+			   : "memory");					      \
+       }								      \
+     __result; })
+
+#define atomic_exchange_and_add(mem, value) \
+  ({ __typeof (*(mem)) __result = *(mem);				      \
+     __typeof (*(mem)) __temp;						      \
+     if (sizeof (*(mem)) == 1)						      \
+       __asm __volatile ("1: move%.b %0,%2;"				      \
+			 "   add%.b %3,%2;"				      \
+			 "   cas%.b %0,%2,%1;"				      \
+			 "   jbne 1b"					      \
+			 : "=d" (__result), "+m" (*(mem)),		      \
+			   "=&d" (__temp)				      \
+			 : "d" (value), "0" (__result));		      \
+     else if (sizeof (*(mem)) == 2)					      \
+       __asm __volatile ("1: move%.w %0,%2;"				      \
+			 "   add%.w %3,%2;"				      \
+			 "   cas%.w %0,%2,%1;"				      \
+			 "   jbne 1b"					      \
+			 : "=d" (__result), "+m" (*(mem)),		      \
+			   "=&d" (__temp)				      \
+			 : "d" (value), "0" (__result));		      \
+     else if (sizeof (*(mem)) == 4)					      \
+       __asm __volatile ("1: move%.l %0,%2;"				      \
+			 "   add%.l %3,%2;"				      \
+			 "   cas%.l %0,%2,%1;"				      \
+			 "   jbne 1b"					      \
+			 : "=d" (__result), "+m" (*(mem)),		      \
+			   "=&d" (__temp)				      \
+			 : "d" (value), "0" (__result));		      \
+     else								      \
+       {								      \
+	 __typeof (mem) __memp = (mem);					      \
+	 __asm __volatile ("1: move%.l %0,%1;"				      \
+			   "   move%.l %R0,%R1;"			      \
+			   "   add%.l %2,%1;"				      \
+			   "   addx%.l %R2,%R1;"			      \
+			   "   cas2%.l %0:%R0,%1:%R1,(%3):(%4);"	      \
+			   "   jbne 1b"					      \
+			   : "=d" (__result), "=&d" (__temp)		      \
+			   : "d" (value), "r" (__memp),			      \
+			     "r" ((char *) __memp + 4), "0" (__result)	      \
+			   : "memory");					      \
+       }								      \
+     __result; })
+
+#define atomic_add(mem, value) \
+  (void) ({ if (sizeof (*(mem)) == 1)					      \
+	      __asm __volatile ("add%.b %1,%0"				      \
+				: "+m" (*(mem))				      \
+				: "id" (value));			      \
+	    else if (sizeof (*(mem)) == 2)				      \
+	      __asm __volatile ("add%.w %1,%0"				      \
+				: "+m" (*(mem))				      \
+				: "id" (value));			      \
+	    else if (sizeof (*(mem)) == 4)				      \
+	      __asm __volatile ("add%.l %1,%0"				      \
+				: "+m" (*(mem))				      \
+				: "id" (value));			      \
+	    else							      \
+	      {								      \
+		__typeof (mem) __memp = (mem);				      \
+		__typeof (*(mem)) __oldval = *__memp;			      \
+		__typeof (*(mem)) __temp;				      \
+		__asm __volatile ("1: move%.l %0,%1;"			      \
+				  "   move%.l %R0,%R1;"			      \
+				  "   add%.l %2,%1;"			      \
+				  "   addx%.l %R2,%R1;"			      \
+				  "   cas2%.l %0:%R0,%1:%R1,(%3):(%4);"	      \
+				  "   jbne 1b"				      \
+				  : "=d" (__oldval), "=&d" (__temp)	      \
+				  : "d" (value), "r" (__memp),		      \
+				    "r" ((char *) __memp + 4), "0" (__oldval) \
+				  : "memory");				      \
+	      }								      \
+	    })
+
+#define atomic_increment_and_test(mem) \
+  ({ char __result;							      \
+     if (sizeof (*(mem)) == 1)						      \
+       __asm __volatile ("addq%.b %#1,%1; seq %0"			      \
+			 : "=dm" (__result), "+m" (*(mem)));		      \
+     else if (sizeof (*(mem)) == 2)					      \
+       __asm __volatile ("addq%.w %#1,%1; seq %0"			      \
+			 : "=dm" (__result), "+m" (*(mem)));		      \
+     else if (sizeof (*(mem)) == 4)					      \
+       __asm __volatile ("addq%.l %#1,%1; seq %0"			      \
+			 : "=dm" (__result), "+m" (*(mem)));		      \
+     else								      \
+       {								      \
+	 __typeof (mem) __memp = (mem);					      \
+	 __typeof (*(mem)) __oldval = *__memp;				      \
+	 __typeof (*(mem)) __temp;					      \
+	 __asm __volatile ("1: move%.l %1,%2;"				      \
+			   "   move%.l %R1,%R2;"			      \
+			   "   addq%.l %#1,%2;"				      \
+			   "   addx%.l %5,%R2;"				      \
+			   "   seq %0;"					      \
+			   "   cas2%.l %1:%R1,%2:%R2,(%3):(%4);"	      \
+			   "   jbne 1b"					      \
+			   : "=&dm" (__result), "=d" (__oldval),	      \
+			     "=&d" (__temp)				      \
+			   : "r" (__memp), "r" ((char *) __memp + 4),	      \
+			     "d" (0), "1" (__oldval)			      \
+			   : "memory");					      \
+       }								      \
+     __result; })
+
+#define atomic_decrement_and_test(mem) \
+  ({ char __result;							      \
+     if (sizeof (*(mem)) == 1)						      \
+       __asm __volatile ("subq%.b %#1,%1; seq %0"			      \
+			 : "=dm" (__result), "+m" (*(mem)));		      \
+     else if (sizeof (*(mem)) == 2)					      \
+       __asm __volatile ("subq%.w %#1,%1; seq %0"			      \
+			 : "=dm" (__result), "+m" (*(mem)));		      \
+     else if (sizeof (*(mem)) == 4)					      \
+       __asm __volatile ("subq%.l %#1,%1; seq %0"			      \
+			 : "=dm" (__result), "+m" (*(mem)));		      \
+     else								      \
+       {								      \
+	 __typeof (mem) __memp = (mem);					      \
+	 __typeof (*(mem)) __oldval = *__memp;				      \
+	 __typeof (*(mem)) __temp;					      \
+	 __asm __volatile ("1: move%.l %1,%2;"				      \
+			   "   move%.l %R1,%R2;"			      \
+			   "   subq%.l %#1,%2;"				      \
+			   "   subx%.l %5,%R2;"				      \
+			   "   seq %0;"					      \
+			   "   cas2%.l %1:%R1,%2:%R2,(%3):(%4);"	      \
+			   "   jbne 1b"					      \
+			   : "=&dm" (__result), "=d" (__oldval),	      \
+			     "=&d" (__temp)				      \
+			   : "r" (__memp), "r" ((char *) __memp + 4),	      \
+			     "d" (0), "1" (__oldval)			      \
+			   : "memory");					      \
+       }								      \
+     __result; })
+
+#define atomic_bit_set(mem, bit) \
+  __asm __volatile ("bfset %0{%1,#1}"					      \
+		    : "+m" (*(mem))					      \
+		    : "di" (sizeof (*(mem)) * 8 - (bit) - 1))
+
+#define atomic_bit_test_set(mem, bit) \
+  ({ char __result;							      \
+     __asm __volatile ("bfset %1{%2,#1}; sne %0"			      \
+		       : "=dm" (__result), "+m" (*(mem))		      \
+		       : "di" (sizeof (*(mem)) * 8 - (bit) - 1));	      \
+     __result; })
diff --git a/sysdeps/m68k/m680x0/m68020/bits/string.h b/sysdeps/m68k/m680x0/m68020/bits/string.h
new file mode 100644
index 0000000000..af6a776e0e
--- /dev/null
+++ b/sysdeps/m68k/m680x0/m68020/bits/string.h
@@ -0,0 +1,25 @@
+/* Optimized, inlined string functions.  m680x0 version, x >= 2.
+   Copyright (C) 1997-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _STRING_H
+# error "Never use <bits/string.h> directly; include <string.h> instead."
+#endif
+
+/* Currently the only purpose of this file is to tell the generic inline
+   macros that unaligned memory access is possible.  */
+#define _STRING_ARCH_unaligned	1
diff --git a/sysdeps/m68k/m680x0/m68020/mul_1.S b/sysdeps/m68k/m680x0/m68020/mul_1.S
new file mode 100644
index 0000000000..67822cd1af
--- /dev/null
+++ b/sysdeps/m68k/m680x0/m68020/mul_1.S
@@ -0,0 +1,83 @@
+/* mc68020 __mpn_mul_1 -- Multiply a limb vector with a limb and store
+   the result in a second limb vector.
+
+Copyright (C) 1992-2014 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/*
+  INPUT PARAMETERS
+  res_ptr	(sp + 4)
+  s1_ptr	(sp + 8)
+  s1_size	(sp + 12)
+  s2_limb	(sp + 16)
+*/
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	TEXT
+ENTRY(__mpn_mul_1)
+
+#define res_ptr a0
+#define s1_ptr a1
+#define s1_size d2
+#define s2_limb d4
+
+/* Save used registers on the stack.  */
+	moveml	R(d2)-R(d4),MEM_PREDEC(sp)
+	cfi_adjust_cfa_offset (3*4)
+	cfi_rel_offset (R(d2), 0)
+	cfi_rel_offset (R(d3), 4)
+	cfi_rel_offset (R(d4), 8)
+
+/* Copy the arguments to registers.  Better use movem?  */
+	movel	MEM_DISP(sp,16),R(res_ptr)
+	movel	MEM_DISP(sp,20),R(s1_ptr)
+	movel	MEM_DISP(sp,24),R(s1_size)
+	movel	MEM_DISP(sp,28),R(s2_limb)
+
+	eorw	#1,R(s1_size)
+	clrl	R(d1)
+	lsrl	#1,R(s1_size)
+	bcc	L(L1)
+	subql	#1,R(s1_size)
+	subl	R(d0),R(d0)	/* (d0,cy) <= (0,0) */
+
+L(Loop:)
+	movel	MEM_POSTINC(s1_ptr),R(d3)
+	mulul	R(s2_limb),R(d1):R(d3)
+	addxl	R(d0),R(d3)
+	movel	R(d3),MEM_POSTINC(res_ptr)
+L(L1:)	movel	MEM_POSTINC(s1_ptr),R(d3)
+	mulul	R(s2_limb),R(d0):R(d3)
+	addxl	R(d1),R(d3)
+	movel	R(d3),MEM_POSTINC(res_ptr)
+
+	dbf	R(s1_size),L(Loop)
+	clrl	R(d3)
+	addxl	R(d3),R(d0)
+	subl	#0x10000,R(s1_size)
+	bcc	L(Loop)
+
+/* Restore used registers from stack frame.  */
+	moveml	MEM_POSTINC(sp),R(d2)-R(d4)
+	cfi_adjust_cfa_offset (-3*4)
+	cfi_restore (R(d2))
+	cfi_restore (R(d3))
+	cfi_restore (R(d4))
+	rts
+END(__mpn_mul_1)
diff --git a/sysdeps/m68k/m680x0/m68020/submul_1.S b/sysdeps/m68k/m680x0/m68020/submul_1.S
new file mode 100644
index 0000000000..b7c60d4b89
--- /dev/null
+++ b/sysdeps/m68k/m680x0/m68020/submul_1.S
@@ -0,0 +1,88 @@
+/* mc68020 __mpn_submul_1 -- Multiply a limb vector with a limb and subtract
+   the result from a second limb vector.
+
+Copyright (C) 1992-2014 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/*
+  INPUT PARAMETERS
+  res_ptr	(sp + 4)
+  s1_ptr	(sp + 8)
+  s1_size	(sp + 12)
+  s2_limb	(sp + 16)
+*/
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+	TEXT
+ENTRY(__mpn_submul_1)
+
+#define res_ptr a0
+#define s1_ptr a1
+#define s1_size d2
+#define s2_limb d4
+
+/* Save used registers on the stack.  */
+	moveml	R(d2)-R(d5),MEM_PREDEC(sp)
+	cfi_adjust_cfa_offset (4*4)
+	cfi_rel_offset (R(d2), 0)
+	cfi_rel_offset (R(d3), 4)
+	cfi_rel_offset (R(d4), 8)
+	cfi_rel_offset (R(d5), 12)
+
+/* Copy the arguments to registers.  Better use movem?  */
+	movel	MEM_DISP(sp,20),R(res_ptr)
+	movel	MEM_DISP(sp,24),R(s1_ptr)
+	movel	MEM_DISP(sp,28),R(s1_size)
+	movel	MEM_DISP(sp,32),R(s2_limb)
+
+	eorw	#1,R(s1_size)
+	clrl	R(d1)
+	clrl	R(d5)
+	lsrl	#1,R(s1_size)
+	bcc	L(L1)
+	subql	#1,R(s1_size)
+	subl	R(d0),R(d0)	/* (d0,cy) <= (0,0) */
+
+L(Loop:)
+	movel	MEM_POSTINC(s1_ptr),R(d3)
+	mulul	R(s2_limb),R(d1):R(d3)
+	addxl	R(d0),R(d3)
+	addxl	R(d5),R(d1)
+	subl	R(d3),MEM_POSTINC(res_ptr)
+L(L1:)	movel	MEM_POSTINC(s1_ptr),R(d3)
+	mulul	R(s2_limb),R(d0):R(d3)
+	addxl	R(d1),R(d3)
+	addxl	R(d5),R(d0)
+	subl	R(d3),MEM_POSTINC(res_ptr)
+
+	dbf	R(s1_size),L(Loop)
+	addxl	R(d5),R(d0)
+	subl	#0x10000,R(s1_size)
+	bcc	L(Loop)
+
+/* Restore used registers from stack frame.  */
+	moveml	MEM_POSTINC(sp),R(d2)-R(d5)
+	cfi_adjust_cfa_offset (-4*4)
+	cfi_restore (R(d2))
+	cfi_restore (R(d3))
+	cfi_restore (R(d4))
+	cfi_restore (R(d5))
+
+	rts
+END(__mpn_submul_1)
diff --git a/sysdeps/m68k/m680x0/m68020/wordcopy.S b/sysdeps/m68k/m680x0/m68020/wordcopy.S
new file mode 100644
index 0000000000..4fb1a4518f
--- /dev/null
+++ b/sysdeps/m68k/m680x0/m68020/wordcopy.S
@@ -0,0 +1 @@
+/* Empty, not needed.  */