--- gcc/config/m88kv3.h	2018/04/24 17:51:33	1.1
+++ gcc/config/m88kv3.h	2018/04/24 17:54:11	1.1.1.2
@@ -36,12 +36,12 @@ the Free Software Foundation, 675 Mass A
    From arul@sdsu.edu.  */
 #undef	STARTFILE_SPEC
 #define STARTFILE_SPEC \
-   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
+   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}} crtbegin.o%s"
 
 /* Profiled libraries live in a different directory but keep the same
    names other than that.  arul@sdsu.edu says -lg is always needed.  */
 #undef	LIB_SPEC
-#define LIB_SPEC "%{p:-L/lib/libp}%{pg:%{!p:-L/lib/libp}} -lg -lc"
+#define LIB_SPEC "%{p:-L/lib/libp}%{pg:%{!p:-L/lib/libp}} -lg -lc crtend.o%s"
 
 /* Hot version of the profiler that uses r10 to pass the address of
    the counter.  the _gcc_mcount routine knows not to screw with
@@ -58,3 +58,83 @@ the Free Software Foundation, 675 Mass A
    too many changes to the m88k.h file.  */
 #undef	USE_LIBG
 #define	USE_LIBG
+
+/* Define a few machine-specific details of the implementation of
+   constructors.  */
+
+/* Although the .init section is used, it is not automatically invoked.  */
+#define INVOKE__main
+
+/* State that atexit exists so __do_global_ctors will register
+   __do_global_dtors.  */
+#define HAVE_ATEXIT
+
+#if (STACK_BOUNDARY / BITS_PER_UNIT) == 16 && REG_PARM_STACK_SPACE (0) == 32
+#define CTOR_LIST_BEGIN	    		\
+  asm (INIT_SECTION_ASM_OP);		\
+  asm ("\tsubu\t r31,r31,16");		\
+  asm ("\tst\t r0,r31,32");		
+#define CTOR_LIST_END
+#endif
+
+/* ASM_OUTPUT_CONSTRUCTOR outputs code into the .init section to push the
+   address of the constructor.  This becomes the body of __do_global_ctors
+   in crtstuff.c.  r13 is a temporary register.  */
+#undef	ASM_OUTPUT_CONSTRUCTOR
+#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)				\
+  do {									\
+    init_section ();							\
+    fprintf (FILE, "\tor.u\t r13,r0,hi16(");				\
+    assemble_name (FILE, NAME);						\
+    fprintf (FILE, ")\n\tor\t r13,r13,lo16(");				\
+    assemble_name (FILE, NAME);						\
+    fprintf (FILE, ")\n\tsubu\t r31,r31,%d\n\tst\t r13,r31,%d\n",	\
+	     STACK_BOUNDARY / BITS_PER_UNIT, REG_PARM_STACK_SPACE (0));	\
+  } while (0)
+
+#undef	DO_GLOBAL_CTORS_BODY
+#define DO_GLOBAL_CTORS_BODY						\
+do {									\
+  func_ptr *__CTOR_LIST__ = __builtin_alloca (0), *p;			\
+  for (p = __CTOR_LIST__; *p; p += 4)					\
+    (*p) ();								\
+} while (0)
+
+#define DTOR_LIST_BEGIN							\
+  asm (FINI_SECTION_ASM_OP);						\
+  func_ptr __DTOR_LIST__[4] = { (func_ptr) (-1), (func_ptr) (-1),	\
+				(func_ptr) (-1), (func_ptr) (-1) }
+#define DTOR_LIST_END						  	\
+  asm (FINI_SECTION_ASM_OP);						\
+  func_ptr __DTOR_END__[4] = { (func_ptr) 0, (func_ptr) 0,		\
+			       (func_ptr) 0, (func_ptr) 0 }  
+
+/* A C statement (sans semicolon) to output an element in the table of
+   global destructors.  The table is constructed in the .fini section
+   so that an explicit linker script is not required.  The complication
+   is that this section is padded with NOP instructions and to either
+   8 or 16 byte alignment depending on the specific system.  A clever
+   way to avoid trouble is to output a block of 16 bytes where the
+   extra words are known values (-1).  */
+#undef	ASM_OUTPUT_DESTRUCTOR
+#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)	\
+  do {						\
+    register int i;				\
+    fini_section ();				\
+    fprintf (FILE, "\t%s\t ", ASM_LONG);	\
+    assemble_name (FILE,NAME);			\
+    fprintf (FILE, "\n");			\
+    for (i = 1; i < 4; i++)			\
+      fprintf (FILE, "\t%s\t -1\n", ASM_LONG);	\
+    } while (0)
+
+/* Walk the list looking for the terminating zero and ignoring all values of
+   -1.  */
+#undef	DO_GLOBAL_DTORS_BODY
+#define DO_GLOBAL_DTORS_BODY			\
+  do {						\
+    int i;					\
+    for (i = 0; __DTOR_LIST__[i] != 0; i++)	\
+      if (((int *)__DTOR_LIST__)[i] != -1)	\
+	__DTOR_LIST__[i] ();			\
+  } while (0)