--- gcc/config/m68k/tower-as.h	2018/04/24 18:10:24	1.1.1.1
+++ gcc/config/m68k/tower-as.h	2018/04/24 18:14:27	1.1.1.2
@@ -38,7 +38,7 @@ the Free Software Foundation, 675 Mass A
 
 /* Names to predefine in the preprocessor for this target machine.  */
 
-#define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_600"
+#define CPP_PREDEFINES "-Dunix -Dtower32 -Dtower32_600 -D__motorola__ -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
 
 /* Define __HAVE_68881 in preprocessor only if -m68881 is specified.
    This will control the use of inline 68881 insns in certain macros.
@@ -71,7 +71,9 @@ the Free Software Foundation, 675 Mass A
 
 #define ASM_OUTPUT_SOURCE_FILENAME(FILE, FILENAME) \
   do {						   \
-    fprintf (FILE, "\tfile\t\"%s\"\n", FILENAME);  \
+    fprintf (FILE, "\tfile\t");			   \
+    output_quoted_string (FILE, FILENAME);	   \
+    fprintf (FILE, "\n");			   \
     fprintf (FILE, "section ~init,\"x\"\n");	   \
     fprintf (FILE, "section ~fini,\"x\"\n");	   \
     fprintf (FILE, "section ~rodata,\"x\"\n");   \