--- gcc/config/i386/sequent.h	2018/04/24 18:10:27	1.1.1.1
+++ gcc/config/i386/sequent.h	2018/04/24 18:23:25	1.1.1.3
@@ -1,5 +1,5 @@
 /* Definitions for Sequent Intel 386.
-   Copyright (C) 1988 Free Software Foundation, Inc.
+   Copyright (C) 1988, 1994 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -33,7 +33,7 @@ the Free Software Foundation, 675 Mass A
 
 /* Specify predefined symbols in preprocessor.  */
 
-#define CPP_PREDEFINES "-Dunix -Di386 -Dsequent"
+#define CPP_PREDEFINES "-Dunix -Di386 -Dsequent -Asystem(unix) -Acpu(i386) -Amachine(i386)"
 
 /* Pass -Z and -ZO options to the linker.  */
 
@@ -144,3 +144,8 @@ the Free Software Foundation, 675 Mass A
 #undef ASM_OUTPUT_INTERNAL_LABEL
 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)\
   fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
+
+/* The native compiler passes the address of the returned structure in eax. */
+#undef STRUCT_VALUE
+#undef STRUCT_VALUE_INCOMING
+#define STRUCT_VALUE_REGNUM	0