--- gcc/config/m68k/lynx.h	2018/04/24 18:14:20	1.1
+++ gcc/config/m68k/lynx.h	2018/04/24 18:28:02	1.1.1.3
@@ -1,5 +1,5 @@
-/* Definitions for Motorola 680X0 running LynxOS.
-   Copyright (C) 1993 Free Software Foundation, Inc.
+/* Definitions for Motorola 680x0 running LynxOS.
+   Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -15,10 +15,22 @@ GNU General Public License for more deta
 
 You should have received a copy of the GNU General Public License
 along with GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
 
-#include "m68k/m68k.h"
-#include "lynx.h"
+#include <m68k/m68k.h>
+#include <m68k/coff.h>
+
+#undef CTORS_SECTION_ASM_OP
+#undef DTORS_SECTION_ASM_OP
+#undef ASM_OUTPUT_DESTRUCTOR
+#undef SELECT_RTX_SECTION
+
+#define BSS_SECTION_ASM_OP ".bss"
+
+#define ASM_LONG ".long"
+
+#include <lynx.h>
 
 /* See m68k.h.  7 means 68020 with 68881.  */
 
@@ -27,9 +39,36 @@ the Free Software Foundation, 675 Mass A
 #endif
 
 /* Names to predefine in the preprocessor for this target machine.  */
+
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-Dunix -Dmc68000 -DM68K -DLynx -DIBITS32 -Asystem(unix) -Asystem(lynx)  -Acpu(m68k) -Amachine(m68k)"
+#define CPP_PREDEFINES "-Dunix -Dmc68000 -DM68K -DLynx -DIBITS32 -Asystem(unix) -Asystem(lynx) -Acpu(m68k) -Amachine(m68k)"
 
 /* Every structure or union's size must be a multiple of 2 bytes.  */
 
 #define STRUCTURE_SIZE_BOUNDARY 16
+
+/* Lynx uses d2 and d3 as scratch registers. */
+#undef CALL_USED_REGISTERS
+#define CALL_USED_REGISTERS \
+ {1, 1, 1, 1, 0, 0, 0, 0,   \
+  1, 1, 0, 0, 0, 0, 0, 1,   \
+  1, 1, 0, 0, 0, 0, 0, 0 }
+
+/* Return floating point values in a fp register.  This make fp code a
+   little bit faster.  It also makes -msoft-float code incompatible with
+   -m68881 code, so people have to be careful not to mix the two.  */
+#undef FUNCTION_VALUE
+#define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))
+
+#undef LIBCALL_VALUE
+#define LIBCALL_VALUE(MODE)                                                \
+ gen_rtx (REG, (MODE),                                                     \
+          ((TARGET_68881                                                   \
+            && ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode)) \
+           ? 16 : 0))
+
+#undef FUNCTION_VALUE_REGNO_P
+#define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (TARGET_68881 && (N) == 16))
+
+#undef NEEDS_UNTYPED_CALL
+#define NEEDS_UNTYPED_CALL 1