Initial revision

From-SVN: r283

1 files changed, 2880 insertions, 0 deletions

diff --git a/gcc/config/m88k/m88k.c b/gcc/config/m88k/m88k.c
new file mode 100644
index 0000000..e3cc205
--- /dev/null
+++ b/gcc/config/m88k/m88k.c
@@ -0,0 +1,2880 @@
+/* Subroutines for insn-output.c for Motorola 88000.
+   Copyright (C) 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
+   Contributed by Michael Tiemann (tiemann@mcc.com)
+   Enhanced by Michael Meissner (meissner@osf.org)
+   Currently supported by Tom Wood (wood@dg-rtp.dg.com)
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC 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 General Public License for more details.
+
+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.  */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <time.h>
+#include <ctype.h>
+
+#include "config.h"
+#include "rtl.h"
+#include "regs.h"
+#include "hard-reg-set.h"
+#include "real.h"
+#include "insn-config.h"
+#include "conditions.h"
+#include "insn-flags.h"
+#include "output.h"
+#include "insn-attr.h"
+#include "tree.h"
+#include "c-tree.h"
+#include "expr.h"
+#include "hard-reg-set.h"
+#include "flags.h"
+
+extern char *version_string;
+extern time_t time ();
+extern char *ctime ();
+extern int flag_traditional;
+extern FILE *asm_out_file;
+
+static char out_sccs_id[] = "@(#)m88k.c	1.96.5.2 06 Feb 1992 10:02:20";
+static char tm_sccs_id [] = TM_SCCS_ID;
+
+char *m88k_pound_sign = "";	/* Either # for SVR4 or empty for SVR3 */
+char *m88k_short_data;
+
+int m88k_gp_threshold;
+int m88k_prologue_done	= 0;	/* Ln directives can now be emitted */
+int m88k_function_number = 0;	/* Counter unique to each function */
+int m88k_fp_offset	= 0;	/* offset of frame pointer if used */
+int m88k_stack_size	= 0;	/* size of allocated stack (including frame) */
+int m88k_case_index;
+
+rtx m88k_compare_reg;		/* cmp output pseudo register */
+rtx m88k_compare_op0;		/* cmpsi operand 0 */
+rtx m88k_compare_op1;		/* cmpsi operand 1 */
+
+/* Determine what instructions are needed to manufacture the integer VALUE
+   in the given MODE.  */
+
+enum m88k_instruction
+classify_integer (mode, value)
+     enum machine_mode mode;
+     register int value;
+{
+  register int mask;
+
+  if (value == 0)
+    return m88k_zero;
+  else if (SMALL_INTVAL (value))
+    return m88k_or;
+  else if (SMALL_INTVAL (-value))
+    return m88k_subu;
+  else if (mode == HImode)
+    return m88k_or_lo16;
+  else if (mode == QImode)
+    return m88k_or_lo8;
+  else if ((value & 0xffff) == 0)
+    return m88k_oru_hi16;
+  else if (integer_ok_for_set (value))
+    return m88k_set;
+  else
+    return m88k_oru_or;
+}
+
+int
+integer_ok_for_set (value)
+     register unsigned value;
+{
+  /* All the "one" bits must be contiguous.  If so, MASK + 1 will be
+     a power of two or zero.  */
+  register unsigned mask = (value | (value - 1));
+  return (value && POWER_OF_2_or_0 (mask + 1));
+}
+
+char *
+output_load_const_int (mode, operands)
+     enum machine_mode mode;
+     rtx *operands;
+{
+  static char *patterns[] =
+    { "or %0,%#r0,0",
+      "or %0,%#r0,%1",
+      "subu %0,%#r0,%n1",
+      "or %0,%#r0,%h1",
+      "or %0,%#r0,%q1",
+      "set %0,%#r0,%s1",
+      "or.u %0,%#r0,%X1",
+      "or.u %0,%#r0,%X1\n\tor %0,%0,%x1",
+    };
+
+  if (! REG_P (operands[0])
+      || GET_CODE (operands[1]) != CONST_INT)
+    abort ();
+  return patterns[classify_integer (mode, INTVAL (operands[1]))];
+}
+
+/* These next two routines assume that floating point numbers are represented
+   in a manner which is consistent between host and target machines.  */
+
+char *
+output_load_const_float (operands)
+     rtx *operands;
+{
+  /* These can return 0 under some circumstances when cross-compiling.  */
+  operands[0] = operand_subword (operands[0], 0, 0, SFmode);
+  operands[1] = operand_subword (operands[1], 0, 0, SFmode);
+
+  return output_load_const_int (SImode, operands);
+}
+
+char *
+output_load_const_double (operands)
+     rtx *operands;
+{
+  rtx latehalf[2];
+
+  /* These can return zero on some cross-compilers, but there's nothing
+     we can do about it.  */
+  latehalf[0] = operand_subword (operands[0], 1, 0, DFmode);
+  latehalf[1] = operand_subword (operands[1], 1, 0, DFmode);
+
+  operands[0] = operand_subword (operands[0], 0, 0, DFmode);
+  operands[1] = operand_subword (operands[1], 0, 0, DFmode);
+
+  output_asm_insn (output_load_const_int (SImode, operands), operands);
+
+  operands[0] = latehalf[0];
+  operands[1] = latehalf[1];
+
+  return output_load_const_int (SImode, operands);
+}
+
+char *
+output_load_const_dimode (operands)
+     rtx *operands;
+{
+  rtx latehalf[2];
+
+  latehalf[0] = operand_subword (operands[0], 1, 0, DImode);
+  latehalf[1] = operand_subword (operands[1], 1, 0, DImode);
+
+  operands[0] = operand_subword (operands[0], 0, 0, DImode);
+  operands[1] = operand_subword (operands[1], 0, 0, DImode);
+
+  output_asm_insn (output_load_const_int (SImode, operands), operands);
+
+  operands[0] = latehalf[0];
+  operands[1] = latehalf[1];
+
+  return output_load_const_int (SImode, operands);
+}
+
+/* Emit insns to move operands[1] into operands[0].
+
+   Return 1 if we have written out everything that needs to be done to
+   do the move.  Otherwise, return 0 and the caller will emit the move
+   normally.  */
+
+int
+emit_move_sequence (operands, mode)
+     rtx *operands;
+     enum machine_mode mode;
+{
+  register rtx operand0 = operands[0];
+  register rtx operand1 = operands[1];
+
+  /* Handle most common case first: storing into a register.  */
+  if (register_operand (operand0, mode))
+    {
+      if (register_operand (operand1, mode)
+	  || (GET_CODE (operand1) == CONST_INT && SMALL_INT (operand1))
+	  || GET_CODE (operand1) == HIGH
+	  /* Only `general_operands' can come here, so MEM is ok.  */
+	  || GET_CODE (operand1) == MEM)
+	{
+	  /* Run this case quickly.  */
+	  emit_insn (gen_rtx (SET, VOIDmode, operand0, operand1));
+	  return 1;
+	}
+    }
+  else if (GET_CODE (operand0) == MEM)
+    {
+      if (register_operand (operand1, mode) || operand1 == const0_rtx)
+	{
+	  /* Run this case quickly.  */
+	  emit_insn (gen_rtx (SET, VOIDmode, operand0, operand1));
+	  return 1;
+	}
+      if (! reload_in_progress)
+	{
+	  operands[0] = validize_mem (operand0);
+	  operands[1] = operand1 = force_reg (mode, operand1);
+	}
+    }
+
+  /* Simplify the source if we need to.  */
+  if (GET_CODE (operand1) != HIGH && immediate_operand (operand1, mode))
+    {
+	if (GET_CODE (operand1) != CONST_INT
+	    && GET_CODE (operand1) != CONST_DOUBLE)
+	  {
+	    rtx temp = reload_in_progress ? operand0 : gen_reg_rtx (Pmode);
+	    operands[1] = legitimize_address (flag_pic
+					      && symbolic_address_p (operand1),
+					      operand1, temp);
+	    if (mode != SImode)
+	      operands[1] = gen_rtx (SUBREG, mode, operands[1], 0);
+	  }
+    }
+
+  /* Now have insn-emit do whatever it normally does.  */
+  return 0;
+}
+
+/* Return a legitimate reference for ORIG (either an address or a MEM) using
+   the register REG.  If PIC and the address is already position-independent,
+   use ORIG.  */
+
+struct rtx_def *
+legitimize_address (pic, orig, reg)
+     int pic;
+     rtx orig;
+     rtx reg;
+{
+  rtx addr = (GET_CODE (orig) == MEM ? XEXP (orig, 0) : orig);
+  rtx new = orig;
+  rtx temp;
+
+  if (pic)
+    {
+      if (GET_CODE (addr) == SYMBOL_REF
+	  || GET_CODE (addr) == LABEL_REF)
+	{
+	  if (reg == 0) abort ();
+
+	  if (flag_pic == 2)
+	    {
+	      emit_insn (gen_rtx (SET, VOIDmode,
+				  reg, gen_rtx (HIGH, SImode, addr)));
+	      emit_insn (gen_rtx (SET, VOIDmode,
+				  reg, gen_rtx (LO_SUM, SImode, reg, addr)));
+	      addr = reg;
+	    }
+	  new = gen_rtx (MEM, Pmode,
+			 gen_rtx (PLUS, SImode,
+				  pic_offset_table_rtx, addr));
+	  current_function_uses_pic_offset_table = 1;
+	  RTX_UNCHANGING_P (new) = 1;
+	  {
+	    rtx insn = emit_move_insn (reg, new);
+	    /* Put a REG_EQUAL note on this insn, so that it can be optimized
+	       by loop.  */
+	    REG_NOTES (insn) = gen_rtx (EXPR_LIST, REG_EQUAL, orig,
+					REG_NOTES (insn));
+	  }
+	  new = reg;
+	}
+      else if (GET_CODE (addr) == CONST)
+	{
+	  rtx base, offset;
+
+	  if (GET_CODE (XEXP (addr, 0)) == PLUS
+	      && XEXP (XEXP (addr, 0), 0) == pic_offset_table_rtx)
+	    return orig;
+
+	  if (reg == 0)
+	    abort ();
+
+	  if (GET_CODE (XEXP (addr, 0)) != PLUS) abort ();
+
+	  base = legitimize_address (1, XEXP (XEXP (addr, 0), 0), reg);
+	  addr = legitimize_address (1, XEXP (XEXP (addr, 0), 1),
+				     base == reg ? 0 : reg);
+
+	  if (GET_CODE (addr) == CONST_INT)
+	    new = plus_constant_for_output (base, INTVAL (addr));
+	  else
+	    new = gen_rtx (PLUS, SImode, base, addr);
+	  /* Should we set special REG_NOTEs here?  */
+	}
+    }
+  else if (! SHORT_ADDRESS_P (addr, temp))
+    {
+      emit_insn (gen_rtx (SET, VOIDmode,
+			  reg, gen_rtx (HIGH, SImode, addr)));
+      new = gen_rtx (LO_SUM, SImode, reg, addr);
+    }
+
+  if (new != orig
+      && GET_CODE (orig) == MEM)
+    {
+      new = gen_rtx (MEM, GET_MODE (orig), new);
+      RTX_UNCHANGING_P (new) = RTX_UNCHANGING_P (orig);
+      MEM_VOLATILE_P (new) = MEM_VOLATILE_P (orig);
+      MEM_IN_STRUCT_P (new) = MEM_IN_STRUCT_P (orig);
+    }
+  return new;
+}
+
+/* Support functions for code to emit a block move.  There are four methods
+   used to perform the block move:
+   + call memcpy
+   + call the looping library function, e.g. __movstrSI64n8
+   + call a non-looping library function, e.g. __movstrHI15x11
+   + produce an inline sequence of ld/st instructions
+
+   The parameters below describe the library functions produced by
+   movstr-m88k.sh.  */
+
+#define MOVSTR_LOOP	64 /* __movstrSI64n68 .. __movstrSI64n8 */
+#define MOVSTR_QI	16 /* __movstrQI16x16 .. __movstrQI16x2 */
+#define MOVSTR_HI	48 /* __movstrHI48x48 .. __movstrHI48x4 */
+#define MOVSTR_SI	96 /* __movstrSI96x96 .. __movstrSI96x8 */
+#define MOVSTR_ODD_SI	48 /* __movstrSI47x47 .. __movstrSI47x11,
+			      __movstrSI46x46 .. __movstrSI46x10,
+			      __movstrSI45x45 .. __movstrSI45x9 */
+#define MOVSTR_ODD_HI	16 /* __movstrHI15x15 .. __movstrHI15x5 */
+
+/* Break even points where memcpy will do just as well.  */
+#define MOVSTR_QI_LIMIT	13
+#define MOVSTR_HI_LIMIT	38
+#define MOVSTR_SI_LIMIT	MOVSTR_SI
+
+static enum machine_mode mode_from_bytes[] =
+			      {VOIDmode, QImode, HImode, VOIDmode, SImode};
+static int max_from_bytes[] = {0, MOVSTR_QI, MOVSTR_HI, 0, MOVSTR_SI};
+static int all_from_bytes[] = {0, MOVSTR_QI, MOVSTR_ODD_HI, 0, MOVSTR_ODD_SI};
+static int best_from_bytes[] =
+		{0, MOVSTR_QI_LIMIT, MOVSTR_HI_LIMIT, 0, MOVSTR_SI_LIMIT};
+
+static void block_move_loop ();
+static void block_move_no_loop ();
+static void block_move_sequence ();
+
+/* Emit code to perform a block move.  Choose the best method.
+
+   OPERANDS[0] is the destination.
+   OPERANDS[1] is the source.
+   OPERANDS[2] is the size.
+   OPERANDS[3] is the alignment safe to use.  */
+
+void
+expand_block_move (dest_mem, src_mem, operands)
+     rtx dest_mem;
+     rtx src_mem;
+     rtx *operands;
+{
+  int align = INTVAL (operands[3]);
+  int constp = (GET_CODE (operands[2]) == CONST_INT);
+  int bytes = (constp ? INTVAL (operands[2]) : 0);
+
+  if (constp && bytes <= 0)
+    return;
+
+  /* Determine machine mode to do move with.  */
+  if (align > 4)
+    align = 4;
+  else if (align <= 0 || align == 3)
+    abort ();	/* block move invalid alignment.  */
+
+  if (constp && bytes <= 3 * align)
+    block_move_sequence (operands[0], dest_mem, operands[1], src_mem,
+			 bytes, align, 0);
+
+  else if (constp && bytes <= best_from_bytes[align])
+    block_move_no_loop (operands[0], dest_mem, operands[1], src_mem,
+			bytes, align);
+
+  else if (constp && align == 4)
+    block_move_loop (operands[0], dest_mem, operands[1], src_mem,
+		     bytes, align);
+
+  else
+    {
+#ifdef TARGET_MEM_FUNCTIONS
+      emit_library_call (gen_rtx (SYMBOL_REF, Pmode, "memcpy"), 0,
+			 VOIDmode, 3,
+			 operands[0], Pmode,
+			 operands[1], Pmode,
+			 operands[2], SImode);
+#else
+      emit_library_call (gen_rtx (SYMBOL_REF, Pmode, "bcopy"), 0,
+			 VOIDmode, 3,
+			 operands[1], Pmode,
+			 operands[0], Pmode,
+			 operands[2], SImode);
+#endif
+    }
+}
+
+/* Emit code to perform a block move by calling a looping movstr library
+   function.  SIZE and ALIGN are known constants.  DEST and SRC are
+   registers.  */
+
+static void
+block_move_loop (dest, dest_mem, src, src_mem, size, align)
+     rtx dest, dest_mem;
+     rtx src, src_mem;
+     int size;
+     int align;
+{
+  enum machine_mode mode;
+  int count;
+  int units;
+  int remainder;
+  rtx offset_rtx;
+  rtx value_rtx;
+  char entry[30];
+  tree entry_name;
+
+  /* Determine machine mode to do move with.  */
+  if (align != 4)
+    abort ();
+
+  /* Determine the structure of the loop.  */
+  count = size / MOVSTR_LOOP;
+  units = (size - count * MOVSTR_LOOP) / align;
+
+  if (units < 2)
+    {
+      count--;
+      units += MOVSTR_LOOP / align;
+    }
+
+  if (count <= 0)
+    {
+      block_move_no_loop (dest, dest_mem, src, src_mem, size, align);
+      return;
+    }
+
+  remainder = size - count * MOVSTR_LOOP - units * align;
+
+  mode = mode_from_bytes[align];
+  sprintf (entry, "__movstr%s%dn%d",
+	   GET_MODE_NAME (mode), MOVSTR_LOOP, units * align);
+  entry_name = get_identifier (entry);
+
+  offset_rtx = gen_rtx (CONST_INT, VOIDmode,
+			MOVSTR_LOOP + (1 - units) * align);
+
+  value_rtx = gen_rtx (MEM, mode,
+		       gen_rtx (PLUS, Pmode,
+				gen_rtx (REG, Pmode, 3),
+				offset_rtx));
+  RTX_UNCHANGING_P (value_rtx) = RTX_UNCHANGING_P (src_mem);
+  MEM_VOLATILE_P (value_rtx) = MEM_VOLATILE_P (src_mem);
+  MEM_IN_STRUCT_P (value_rtx) = MEM_IN_STRUCT_P (src_mem);
+
+  emit_insn (gen_call_block_move_loop
+	     (gen_rtx (SYMBOL_REF, Pmode, IDENTIFIER_POINTER (entry_name)),
+	      dest, src, offset_rtx, value_rtx,
+	      gen_rtx (REG, GET_MODE (value_rtx), ((units & 1) ? 4 : 5)),
+	      gen_rtx (CONST_INT, VOIDmode, count)));
+
+  if (remainder)
+    block_move_sequence (gen_rtx (REG, Pmode, 2), dest_mem,
+			 gen_rtx (REG, Pmode, 3), src_mem,
+			 remainder, align, MOVSTR_LOOP + align);
+}
+
+/* Emit code to perform a block move by calling a non-looping library
+   function.  SIZE and ALIGN are known constants.  DEST and SRC are
+   registers.  OFFSET is the known starting point for the output pattern.  */
+
+static void
+block_move_no_loop (dest, dest_mem, src, src_mem, size, align)
+     rtx dest, dest_mem;
+     rtx src, src_mem;
+     int size;
+     int align;
+{
+  enum machine_mode mode = mode_from_bytes[align];
+  int units = size / align;
+  int remainder = size - units * align;
+  int most;
+  int evenp;
+  rtx offset_rtx;
+  rtx value_rtx;
+  char entry[30];
+  tree entry_name;
+
+  if (remainder && size <= all_from_bytes[align])
+    {
+      most = all_from_bytes[align] - (align - remainder);
+      remainder = 0;
+    }
+  else
+    {
+      most = max_from_bytes[align];
+    }
+
+  sprintf (entry, "__movstr%s%dx%d",
+	   GET_MODE_NAME (mode), most, size - remainder);
+  entry_name = get_identifier (entry);
+
+  offset_rtx = gen_rtx (CONST_INT, VOIDmode, most - (size - remainder));
+
+  value_rtx = gen_rtx (MEM, mode,
+		       gen_rtx (PLUS, Pmode,
+				gen_rtx (REG, Pmode, 3),
+				offset_rtx));
+  RTX_UNCHANGING_P (value_rtx) = RTX_UNCHANGING_P (src_mem);
+  MEM_VOLATILE_P (value_rtx) = MEM_VOLATILE_P (src_mem);
+  MEM_IN_STRUCT_P (value_rtx) = MEM_IN_STRUCT_P (src_mem);
+
+  evenp = ((most - (size - remainder)) / align) & 1;
+
+  emit_insn (gen_call_block_move
+	     (gen_rtx (SYMBOL_REF, Pmode, IDENTIFIER_POINTER (entry_name)),
+	      dest, src, offset_rtx, value_rtx,
+	      gen_rtx (REG, GET_MODE (value_rtx), (evenp ? 4 : 5))));
+
+  if (remainder)
+    block_move_sequence (gen_rtx (REG, Pmode, 2), dest_mem,
+			 gen_rtx (REG, Pmode, 3), src_mem,
+			 remainder, align, most);
+}
+
+/* Emit code to perform a block move with an offset sequence of ld/st
+   instructions (..., ld 0, st 1, ld 1, st 0, ...).  SIZE and ALIGN are
+   known constants.  DEST and SRC are registers.  OFFSET is the known
+   starting point for the output pattern.  */
+
+static void
+block_move_sequence (dest, dest_mem, src, src_mem, size, align, offset)
+     rtx dest, dest_mem;
+     rtx src, src_mem;
+     int size;
+     int align;
+     int offset;
+{
+  rtx temp[2];
+  enum machine_mode mode[2];
+  int amount[2];
+  int active[2];
+  int phase = 0;
+  int next;
+  int offset_ld = offset;
+  int offset_st = offset;
+
+  active[0] = active[1] = FALSE;
+
+  /* Establish parameters for the first load and for the second load if
+     it is known to be the same mode as the first.  */
+  amount[0] = amount[1] = align;
+  mode[0] = mode_from_bytes[align];
+  temp[0] = gen_reg_rtx (mode[0]);
+  if (size >= 2 * align)
+    {
+      mode[1] = mode[0];
+      temp[1] = gen_reg_rtx (mode[1]);
+    }
+
+  do
+    {
+      rtx srcp, dstp;
+      next = phase;
+      phase = !phase;
+
+      if (size > 0)
+	{
+	  /* Change modes as the sequence tails off.  */
+	  if (size < amount[next])
+	    {
+	      amount[next] = (size >= 2 ? 2 : 1);
+	      mode[next] = mode_from_bytes[amount[next]];
+	      temp[next] = gen_reg_rtx (mode[next]);
+	    }
+	  size -= amount[next];
+	  srcp = gen_rtx (MEM, mode[next],
+			  gen_rtx (PLUS, Pmode, src,
+				   gen_rtx (CONST_INT, SImode, offset_ld)));
+	  RTX_UNCHANGING_P (srcp) = RTX_UNCHANGING_P (src_mem);
+	  MEM_VOLATILE_P (srcp) = MEM_VOLATILE_P (src_mem);
+	  MEM_IN_STRUCT_P (srcp) = MEM_IN_STRUCT_P (src_mem);
+	  emit_move_insn (temp[next], srcp);
+	  offset_ld += amount[next];
+	  active[next] = TRUE;
+	}
+
+      if (active[phase])
+	{
+	  active[phase] = FALSE;
+	  dstp = gen_rtx (MEM, mode[phase],
+			  gen_rtx (PLUS, Pmode, dest,
+				   gen_rtx (CONST_INT, SImode, offset_st)));
+	  RTX_UNCHANGING_P (dstp) = RTX_UNCHANGING_P (dest_mem);
+	  MEM_VOLATILE_P (dstp) = MEM_VOLATILE_P (dest_mem);
+	  MEM_IN_STRUCT_P (dstp) = MEM_IN_STRUCT_P (dest_mem);
+	  emit_move_insn (dstp, temp[phase]);
+	  offset_st += amount[phase];
+	}
+    }
+  while (active[next]);
+}
+
+/* Emit the code to do an AND operation.  */
+
+char *
+output_and (operands)
+     rtx operands[];
+{
+  unsigned int value;
+
+  if (REG_P (operands[2]))
+    return "and %0,%1,%2";
+
+  value = INTVAL (operands[2]);
+  if (SMALL_INTVAL (value))
+    return "mask %0,%1,%2";
+  else if ((value & 0xffff0000) == 0xffff0000)
+    return "and %0,%1,%x2";
+  else if ((value & 0xffff) == 0xffff)
+    return "and.u %0,%1,%X2";
+  else if ((value & 0xffff) == 0)
+    return "mask.u %0,%1,%X2";
+  else if (integer_ok_for_set (~value))
+    return "clr %0,%1,%S2";
+  else
+    return "and.u %0,%1,%X2\n\tand %0,%0,%x2";
+}
+
+/* Emit the code to do an inclusive OR operation.  */
+
+char *
+output_ior (operands)
+     rtx operands[];
+{
+  unsigned int value;
+
+  if (REG_P (operands[2]))
+    return "or %0,%1,%2";
+
+  value = INTVAL (operands[2]);
+  if (SMALL_INTVAL (value))
+    return "or %0,%1,%2";
+  else if ((value & 0xffff) == 0)
+    return "or.u %0,%1,%X2";
+  else if (integer_ok_for_set (value))
+    return "set %0,%1,%s2";
+  else
+    return "or.u %0,%1,%X2\n\tor %0,%0,%x2";
+}
+
+/* Emit the instructions for doing an XOR.  */
+
+char *
+output_xor (operands)
+     rtx operands[];
+{
+  unsigned int value;
+
+  if (REG_P (operands[2]))
+    return "xor %0,%1,%2";
+
+  value = INTVAL (operands[2]);
+  if (SMALL_INTVAL (value))
+    return "xor %0,%1,%2";
+  else if ((value & 0xffff) == 0)
+    return "xor.u %0,%1,%X2";
+  else
+    return "xor.u %0,%1,%X2\n\txor %0,%0,%x2";
+}
+
+/* Output a call.  Normally this is just bsr or jsr, but this also deals with
+   accomplishing a branch after the call by incrementing r1.  This requires
+   that various assembler bugs be accomodated.  The 4.30 DG/UX assembler
+   requires that forward references not occur when computing the difference of
+   two labels.  The [version?] Motorola assembler computes a word difference.
+   No doubt there's more to come!
+
+   It would seem the same idea could be used to tail call, but in this case,
+   the epilogue will be non-null.  */
+
+static rtx sb_name = 0;
+static rtx sb_high = 0;
+static rtx sb_low = 0;
+
+char *
+output_call (operands, addr)
+     rtx operands[];
+     rtx addr;
+{
+  operands[0] = addr;
+  if (final_sequence)
+    {
+      rtx jump;
+
+      /* This can be generalized, but there is currently no need.  */
+      if (XVECLEN (final_sequence, 0) != 2)
+	abort ();
+
+      jump = XVECEXP (final_sequence, 0, 1);
+      if (GET_CODE (jump) == JUMP_INSN)
+	{
+	  rtx low, high;
+	  char *last;
+	  rtx dest = XEXP (SET_SRC (PATTERN (jump)), 0);
+	  int delta = 4 * (insn_addresses[INSN_UID (dest)]
+			   - insn_addresses[INSN_UID (jump)]);
+#if (MONITOR_GCC & 0x2) /* How often do long branches happen?  */
+	  if ((unsigned) (delta + 0x8000) >= 0x10000)
+	    warning ("Internal gcc monitor: short-branch(%x)", delta);
+#endif
+
+	  /* Delete the jump.  */
+	  PUT_CODE (jump, NOTE);
+	  NOTE_LINE_NUMBER (jump) = NOTE_INSN_DELETED;
+	  NOTE_SOURCE_FILE (jump) = 0;
+
+	  /* If we loose, we must use the non-delay form.  This is unlikely
+	     to ever happen.  If it becomes a problem, claim that a call
+	     has two delay slots and only the second can be filled with
+	     a jump.  */
+#ifdef AS_BUG_IMMEDIATE_LABEL /* The assembler restricts immediate values.  */
+	  if (! ADD_INTVAL (delta * 2))
+#else
+	  if (! ADD_INTVAL (delta))
+#endif
+	    {
+	      operands[1] = dest;
+	      return (REG_P (addr)
+		      ? "jsr %0\n\tbr %l1"
+		      : (flag_pic
+			 ? "bsr %0#plt\n\tbr %l1"
+			 : "bsr %0\n\tbr %l1"));
+	    }
+
+	  /* Output the short branch form.  */
+	  output_asm_insn ((REG_P (addr)
+			    ? "jsr.n %0"
+			    : (flag_pic ? "bsr.n %0#plt" : "bsr.n %0")),
+			   operands);
+
+	  operands[0] = gen_label_rtx ();
+	  operands[1] = gen_label_rtx ();
+	  if (delta < 0)
+	    {
+	      low = dest;
+	      high = operands[1];
+	      last = "subu %#r1,%#r1,%l0\n%l1:";
+	    }
+	  else
+	    {
+	      low = operands[1];
+	      high = dest;
+	      last = "addu %#r1,%#r1,%l0\n%l1:";
+	    }
+
+	  /* Record the values to be computed later as "def name,high-low".  */
+	  sb_name = gen_rtx (EXPR_LIST, VOIDmode, operands[0], sb_name);
+	  sb_high = gen_rtx (EXPR_LIST, VOIDmode, high, sb_high);
+	  sb_low = gen_rtx (EXPR_LIST, VOIDmode, low, sb_low);
+
+	  return last;
+	}
+    }
+  return (REG_P (addr)
+	  ? "jsr%. %0"
+	  : (flag_pic ? "bsr%. %0#plt" : "bsr%. %0"));
+}
+
+static void
+output_short_branch_defs (stream)
+     FILE *stream;
+{
+  char name[256], high[256], low[256];
+
+  for (; sb_name && sb_high && sb_low;
+       sb_name = XEXP (sb_name, 1),
+       sb_high = XEXP (sb_high, 1),
+       sb_low = XEXP (sb_low, 1))
+    {
+      ASM_GENERATE_INTERNAL_LABEL
+	(name, "L", CODE_LABEL_NUMBER (XEXP (sb_name, 0)));
+      ASM_GENERATE_INTERNAL_LABEL
+	(high, "L", CODE_LABEL_NUMBER (XEXP (sb_high, 0)));
+      ASM_GENERATE_INTERNAL_LABEL
+	(low, "L", CODE_LABEL_NUMBER (XEXP (sb_low, 0)));
+      /* This will change as the assembler requirements become known.  */
+      fprintf (stream, "%s\t %s,%s-%s\n",
+	       DEF_ASM_OP, &name[1], &high[1], &low[1]);
+    }
+  if (sb_name || sb_high || sb_low)
+    abort ();
+}
+
+/* Report errors on floating point, if we are given NaN's, or such.  Leave
+   the number as is, though, since we output the number in hex, and the
+   assemble won't choak on it.  */
+
+void
+check_float_value (mode, value)
+     enum machine_mode mode;
+     REAL_VALUE_TYPE value;
+{
+  union {
+    REAL_VALUE_TYPE d;
+    struct {
+      unsigned sign	    :  1;
+      unsigned exponent  : 11;
+      unsigned mantissa1 : 20;
+      unsigned mantissa2;
+    } s;
+  } u;
+
+  if (mode == DFmode)
+    {
+      u.d = value;
+      if (u.s.mantissa1 != 0 || u.s.mantissa2 != 0)
+	{
+	  if (u.s.exponent == 0x7ff)	/* Not a Number */
+	    warning ("floating point number is not valid for IEEE double precision");
+	  else if (u.s.exponent == 0)
+	    warning ("denormalized double precision floating point number");
+	}
+    }
+  else if (mode == SFmode)
+    {
+      u.d = REAL_VALUE_TRUNCATE (mode, value);
+      if (u.s.mantissa1 != 0 || u.s.mantissa2 != 0)
+	{
+	  if (u.s.exponent == 0x7ff)	/* Not a Number */
+	    warning ("floating point number is not valid for IEEE double precision");
+	  else if (u.s.exponent == 0)
+	    warning ("denormalized single precision floating point number");
+	}
+      else if (u.s.exponent == 0x7ff)	/* Infinity */
+	warning ("floating point number exceeds range of `float'");
+    }
+}
+
+/* Return true if the operand is a power of two and is a floating
+   point type (to optimize division by power of two into multiplication).  */
+
+int
+real_power_of_2_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  union {
+    REAL_VALUE_TYPE d;
+    int i[sizeof (REAL_VALUE_TYPE) / sizeof (int)];
+    struct {				/* IEEE double precision format */
+      unsigned sign	 :  1;
+      unsigned exponent  : 11;
+      unsigned mantissa1 : 20;
+      unsigned mantissa2;
+    } s;
+    struct {				/* IEEE double format to quick check */
+      unsigned sign	 :  1;		/* if it fits in a float */
+      unsigned exponent1 :  4;
+      unsigned exponent2 :  7;
+      unsigned mantissa1 : 20;
+      unsigned mantissa2;
+    } s2;
+  } u;
+
+  if (GET_MODE (op) != DFmode && GET_MODE (op) != SFmode)
+    return 0;
+
+  if (GET_CODE (op) != CONST_DOUBLE)
+    return 0;
+
+  u.i[0] = CONST_DOUBLE_LOW  (op);
+  u.i[1] = CONST_DOUBLE_HIGH (op);
+
+  if (u.s.mantissa1 != 0 || u.s.mantissa2 != 0	/* not a power of two */
+      || u.s.exponent == 0			/* constant 0.0 */
+      || u.s.exponent == 0x7ff			/* NAN */
+      || (u.s2.exponent1 != 0x8 && u.s2.exponent1 != 0x7))
+    return 0;					/* const won't fit in float */
+
+  return 1;
+}
+
+/* Make OP legitimate for mode MODE.  Currently this only deals with DFmode
+   operands, putting them in registers and making CONST_DOUBLE values
+   SFmode where possible.  */
+
+struct rtx_def *
+legitimize_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  rtx temp;
+  union {
+    union real_extract r;
+    struct {				/* IEEE double precision format */
+      unsigned sign	 :  1;
+      unsigned exponent  : 11;
+      unsigned mantissa1 : 20;
+      unsigned mantissa2;
+    } d;
+    struct {				/* IEEE double format to quick check */
+      unsigned sign	 :  1;		/* if it fits in a float */
+      unsigned exponent1 :  4;
+      unsigned exponent2 :  7;
+      unsigned mantissa1 : 20;
+      unsigned mantissa2;
+    } s;
+  } u;
+
+  if (GET_CODE (op) == REG || mode != DFmode)
+    return op;
+
+  if (GET_CODE (op) == CONST_DOUBLE)
+    {
+      bcopy (&CONST_DOUBLE_LOW (op), &u.r, sizeof u);
+      if (u.d.exponent != 0x7ff /* NaN */
+	  && u.d.mantissa2 == 0 /* Mantissa fits */
+	  && (u.s.exponent1 == 0x8 || u.s.exponent1 == 0x7) /* Exponent fits */
+	  && (temp = simplify_unary_operation (FLOAT_TRUNCATE, SFmode,
+					       op, mode)) != 0)
+	return gen_rtx (FLOAT_EXTEND, mode, force_reg (SFmode, temp));
+    }
+  else if (register_operand (op, mode))
+    return op;
+
+  return force_reg (mode, op);
+}
+
+/* Return true if OP is a suitable input for a move insn.  */
+
+int
+move_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  if (register_operand (op, mode))
+    return 1;
+  if (GET_CODE (op) == CONST_INT)
+    return (classify_integer (mode, INTVAL (op)) < m88k_oru_hi16);
+  if (GET_MODE (op) != mode)
+    return 0;
+  if (GET_CODE (op) == SUBREG)
+    op = SUBREG_REG (op);
+  if (GET_CODE (op) != MEM)
+    return 0;
+
+  op = XEXP (op, 0);
+  if (GET_CODE (op) == LO_SUM)
+    return (REG_P (XEXP (op, 0))
+	    && symbolic_address_p (XEXP (op, 1)));
+  return memory_address_p (mode, op);
+}
+
+/* Return true if OP is suitable for a call insn.  */
+
+int
+call_address_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (REG_P (op) || symbolic_address_p (op));
+}
+
+/* Returns true if OP is either a symbol reference or a sum of a symbol
+   reference and a constant.  */
+
+int
+symbolic_address_p (op)
+     register rtx op;
+{
+  switch (GET_CODE (op))
+    {
+    case SYMBOL_REF:
+    case LABEL_REF:
+      return 1;
+
+    case CONST:
+      op = XEXP (op, 0);
+      return ((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
+	       || GET_CODE (XEXP (op, 0)) == LABEL_REF)
+	      && GET_CODE (XEXP (op, 1)) == CONST_INT);
+
+    default:
+      return 0;
+    }
+}
+
+/* Return true if OP is a register or const0_rtx.  */
+
+int
+reg_or_0_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (op == const0_rtx || register_operand (op, mode));
+}
+
+/* Nonzero if OP is a valid second operand for an arithmetic insn.  */
+
+int
+arith_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (register_operand (op, mode)
+	  || (GET_CODE (op) == CONST_INT && SMALL_INT (op)));
+}
+
+/* Return true if OP is a  register or 5 bit integer.  */
+
+int
+arith5_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (register_operand (op, mode)
+	  || (GET_CODE (op) == CONST_INT && (unsigned) INTVAL (op) < 32));
+}
+
+int
+arith32_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (register_operand (op, mode) || GET_CODE (op) == CONST_INT);
+}
+
+int
+arith64_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (register_operand (op, mode)
+	  || GET_CODE (op) == CONST_INT
+	  || (GET_CODE (op) == CONST_DOUBLE && GET_MODE (op) == DImode));
+}
+
+int
+int5_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (GET_CODE (op) == CONST_INT && (unsigned) INTVAL (op) < 32);
+}
+
+int
+int32_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (GET_CODE (op) == CONST_INT);
+}
+
+/* Return true if OP is a register or a valid immediate operand for
+   addu or subu.  */
+
+int
+add_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (register_operand (op, mode)
+	  || (GET_CODE (op) == CONST_INT && ADD_INT (op)));
+}
+
+/* Nonzero if this is a bitmask filling the bottom bits, for optimizing and +
+   shift left combinations into a single mak instruction.  */
+
+int
+mak_mask_p (value)
+     int value;
+{
+  return (value && POWER_OF_2_or_0 (value + 1));
+}
+
+int
+reg_or_bbx_mask_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  int value;
+  if (register_operand (op, mode))
+    return 1;
+  if (GET_CODE (op) != CONST_INT)
+    return 0;
+
+  value = INTVAL (op);
+  if (POWER_OF_2 (value))
+    return 1;
+
+  return 0;
+}
+
+/* Return true if OP is valid to use in the context of a floating
+   point operation.  Special case 0.0, since we can use r0.  */
+
+int
+real_or_0_operand (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  if (mode != SFmode && mode != DFmode)
+    return 0;
+
+  return (register_operand (op, mode)
+	  || (GET_CODE (op) == CONST_DOUBLE
+	      && op == CONST0_RTX (mode)));
+}
+
+/* Return true if OP is a relational operator.  */
+
+int
+relop (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  switch (GET_CODE (op))
+    {
+    case EQ:
+    case NE:
+    case LT:
+    case LE:
+    case GE:
+    case GT:
+    case LTU:
+    case LEU:
+    case GEU:
+    case GTU:
+      return 1;
+    default:
+      return 0;
+    }
+}
+
+/* Return true if OP is a relational operator, and is not an unsigned
+   relational operator.  */
+
+int
+relop_no_unsigned (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  switch (GET_CODE (op))
+    {
+    case EQ:
+    case NE:
+    case LT:
+    case LE:
+    case GE:
+    case GT:
+      /* @@ What is this test doing?  Why not use `mode'?  */
+      if (GET_MODE_CLASS (GET_MODE (op)) == MODE_FLOAT
+	  || GET_MODE (op) == DImode
+	  || GET_MODE_CLASS (GET_MODE (XEXP (op, 0))) == MODE_FLOAT
+	  || GET_MODE (XEXP (op, 0)) == DImode
+	  || GET_MODE_CLASS (GET_MODE (XEXP (op, 1))) == MODE_FLOAT
+	  || GET_MODE (XEXP (op, 1)) == DImode)
+	return 0;
+      return 1;
+    default:
+      return 0;
+    }
+}
+
+/* Return true if the code of this rtx pattern is EQ or NE.  */
+
+int
+equality_op (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (GET_CODE (op) == EQ || GET_CODE (op) == NE);
+}
+
+/* Return true if the code of this rtx pattern is pc or label_ref.  */
+
+int
+pc_or_label_ref (op, mode)
+     rtx op;
+     enum machine_mode mode;
+{
+  return (GET_CODE (op) == PC || GET_CODE (op) == LABEL_REF);
+}
+
+/* Output to FILE the start of the assembler file.  */
+
+struct option
+{
+  char *string;
+  int *variable;
+  int on_value;
+};
+
+static int
+output_option (file, sep, type, name, indent, pos, max)
+     FILE *file;
+     char *sep;
+     char *type;
+     char *name;
+     char *indent;
+     int pos;
+     int max;
+{
+  if (strlen (sep) + strlen (type) + strlen (name) + pos > max)
+    {
+      fprintf (file, indent);
+      return fprintf (file, "%s%s", type, name);
+    }
+  return pos + fprintf (file, "%s%s%s", sep, type, name);
+}
+
+static struct { char *name; int value; } m_options[] = TARGET_SWITCHES;
+
+static void
+output_options (file, f_options, f_len, W_options, W_len,
+		pos, max, sep, indent, term)
+     FILE *file;
+     struct option *f_options;
+     struct option *W_options;
+     int f_len, W_len;
+     int pos;
+     int max;
+     char *indent;
+     char *term;
+{
+  register int j;
+
+  if (optimize)
+    pos = output_option (file, sep, "-O", "", indent, pos, max);
+  if (write_symbols != NO_DEBUG)
+    pos = output_option (file, sep, "-g", "", indent, pos, max);
+  if (flag_traditional)
+    pos = output_option (file, sep, "-traditional", "", indent, pos, max);
+  if (profile_flag)
+    pos = output_option (file, sep, "-p", "", indent, pos, max);
+
+  for (j = 0; j < f_len; j++)
+    if (*f_options[j].variable == f_options[j].on_value)
+      pos = output_option (file, sep, "-f", f_options[j].string,
+			   indent, pos, max);
+
+  for (j = 0; j < W_len; j++)
+    if (*W_options[j].variable == W_options[j].on_value)
+      pos = output_option (file, sep, "-W", W_options[j].string,
+			   indent, pos, max);
+
+  for (j = 0; j < sizeof m_options / sizeof m_options[0]; j++)
+    if (m_options[j].name[0] != '\0'
+	&& m_options[j].value > 0
+	&& ((m_options[j].value & target_flags)
+	    == m_options[j].value))
+      pos = output_option (file, sep, "-m", m_options[j].name,
+			   indent, pos, max);
+
+  if (m88k_short_data)
+    pos = output_option (file, sep, "-mshort-data-", m88k_short_data,
+			 indent, pos, max);
+
+  fprintf (file, term);
+}
+
+void
+output_file_start (file, f_options, f_len, W_options, W_len)
+     FILE *file;
+     struct option *f_options;
+     struct option *W_options;
+     int f_len, W_len;
+{
+  register int pos;
+
+  ASM_FIRST_LINE (file);
+  output_file_directive (file, main_input_filename);
+  /* Switch to the data section so that the coffsem symbol and the
+     gcc2_compiled. symbol aren't in the text section.  */
+  data_section ();
+  ASM_COFFSEM (file);
+
+  pos = fprintf (file, "\n; cc1 (%s) arguments:", VERSION_STRING);
+  output_options (file, f_options, f_len, W_options, W_len,
+		  pos, 75, " ", "\n; ", "\n\n");
+
+  if (TARGET_IDENTIFY_REVISION)
+    {
+      char indent[256];
+
+      time_t now = time ((time_t *)0);
+      sprintf (indent, "]\"\n%s\t \"@(#)%s [", IDENT_ASM_OP, main_input_filename);
+      fprintf (file, indent+3);
+      pos = fprintf (file, "gcc %s, %.24s,", VERSION_STRING, ctime (&now));
+      output_options (file, f_options, f_len, W_options, W_len,
+		      pos, 150 - strlen (indent), " ", indent, "]\"\n\n");
+    }
+}
+
+/* Output an ascii string.  */
+
+void
+output_ascii (file, p, size)
+     FILE *file;
+     unsigned char *p;
+     int size;
+{
+  int i;
+
+  register int num = 0;
+
+  fprintf (file, "%s\t \"", ASCII_DATA_ASM_OP);
+  for (i = 0; i < size; i++)
+    {
+      register int c = p[i];
+
+      if (num > 48)
+	{
+	  fprintf (file, "\"\n%s\t \"", ASCII_DATA_ASM_OP);
+	  num = 0;
+	}
+
+      if (c == '\"' || c == '\\')
+	{
+	  putc ('\\', file);
+	  num++;
+	}
+
+      if (c >= ' ' && c < 0177)
+	{
+	  putc (c, file);
+	  num++;
+	}
+      else
+	{
+	  fprintf (file, "\\%03o", c);
+	  num += 4;
+	  /* After an octal-escape, if a digit follows,
+	     terminate one string constant and start another.
+	     The Vax assembler fails to stop reading the escape
+	     after three digits, so this is the only way we
+	     can get it to parse the data properly.  */
+	  if (i < size - 1 && p[i + 1] >= '0' && p[i + 1] <= '9')
+	    num = 32767;	/* next pass will start a new string */
+	}
+    }
+  fprintf (file, "\"\n");
+}
+
+/* Output a label (allows insn-output.c to be compiled without including
+   m88k.c or needing to include stdio.h).  */
+
+void
+output_label (label_number)
+     int label_number;
+{
+  ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "L", label_number);
+}
+
+/* Handle a pragma directive.  HANDLE_PRAGMA conspires to parse the input
+   following #pragma into tokens based on yylex.  */
+
+void
+m88k_handle_pragma_token (string, token)
+     char *string;
+     tree token;
+{
+  static enum pragma_state
+    {
+      ps_start,
+      ps_done,
+      ps_bad,
+      ps_weak,
+      ps_name,
+      ps_equals,
+      ps_value
+    } state;
+  static char *name;
+  static char *value;
+
+  if (HANDLE_PRAGMA_WEAK)
+    {
+      if (string == 0)
+	{
+	  if (state == ps_name || state == ps_value)
+	    {
+	      fprintf (asm_out_file, "%s\t ", WEAK_ASM_OP);
+	      ASM_OUTPUT_LABELREF (asm_out_file, name);
+	      fputc ('\n', asm_out_file);
+	      if (state == ps_value)
+		{
+		  fprintf (asm_out_file, "%s\t ", DEF_ASM_OP);
+		  ASM_OUTPUT_LABELREF (asm_out_file, name);
+		  fputc (',', asm_out_file);
+		  ASM_OUTPUT_LABELREF (asm_out_file, value);
+		  fputc ('\n', asm_out_file);
+		}
+	    }
+	  else if (! (state == ps_done || state == ps_start))
+	    warning ("ignoring malformed #pragma weak symbol [=value]");
+	  state = ps_start;
+	}
+      else
+	switch (state)
+	  {
+	  case ps_start:
+	    if (token
+		&& TREE_CODE (token) == IDENTIFIER_NODE
+		&& !strcmp (IDENTIFIER_POINTER (token), "weak"))
+	      state = ps_weak;
+	    else
+	      state = ps_done;
+	    break;
+
+	  case ps_weak:
+	    if (token
+		&& TREE_CODE (token) == IDENTIFIER_NODE)
+	      {
+		name = IDENTIFIER_POINTER (token);
+		state = ps_name;
+	      }
+	    else
+	      state = ps_bad;
+	    break;
+
+	  case ps_name:
+	    state = (strcmp (string, "=") ? ps_bad : ps_equals);
+	    break;
+
+	  case ps_equals:
+	    if (token
+		&& TREE_CODE (token) == IDENTIFIER_NODE)
+	      {
+		value = IDENTIFIER_POINTER (token);
+		state = ps_value;
+	      }
+	    else
+	      state = ps_bad;
+	    break;
+
+	  case ps_value:
+	    state = ps_bad;
+	  case ps_bad:
+	  case ps_done:
+	    break;
+
+	  default:
+	    abort ();
+	  }
+    }
+}
+
+/* Generate the assembly code for function entry.
+
+   The prologue is responsible for setting up the stack frame,
+   initializing the frame pointer register, saving registers that must be
+   saved, and allocating SIZE additional bytes of storage for the
+   local variables.  SIZE is an integer.  FILE is a stdio
+   stream to which the assembler code should be output.
+
+   The label for the beginning of the function need not be output by this
+   macro.  That has already been done when the macro is run.
+
+   To determine which registers to save, the macro can refer to the array
+   `regs_ever_live': element R is nonzero if hard register
+   R is used anywhere within the function.  This implies the
+   function prologue should save register R, but not if it is one
+   of the call-used registers.
+
+   On machines where functions may or may not have frame-pointers, the
+   function entry code must vary accordingly; it must set up the frame
+   pointer if one is wanted, and not otherwise.  To determine whether a
+   frame pointer is in wanted, the macro can refer to the variable
+   `frame_pointer_needed'.  The variable's value will be 1 at run
+   time in a function that needs a frame pointer.
+
+   On machines where an argument may be passed partly in registers and
+   partly in memory, this macro must examine the variable
+   `current_function_pretend_args_size', and allocate that many bytes
+   of uninitialized space on the stack just underneath the first argument
+   arriving on the stack.  (This may not be at the very end of the stack,
+   if the calling sequence has pushed anything else since pushing the stack
+   arguments.  But usually, on such machines, nothing else has been pushed
+   yet, because the function prologue itself does all the pushing.)
+
+   If `ACCUMULATE_OUTGOING_ARGS' is defined, the variable
+   `current_function_outgoing_args_size' contains the size in bytes
+   required for the outgoing arguments.  This macro must add that
+   amount of uninitialized space to very bottom of the stack.
+
+   The stack frame we use looks like this:
+
+ caller                                                  callee
+        |==============================================|
+        |                caller's frame                |
+        |==============================================|
+        |     [caller's outgoing memory arguments]     |
+        |==============================================|
+        |  caller's outgoing argument area (32 bytes)  |
+  sp -> |==============================================| <- ap
+        |            [local variable space]            |
+        |----------------------------------------------|
+        |            [return address (r1)]             |
+        |----------------------------------------------|
+        |        [previous frame pointer (r30)]        |
+        |==============================================| <- fp
+        |       [preserved registers (r25..r14)]       |
+        |==============================================|
+        |    [dynamically allocated space (alloca)]    |
+        |==============================================|
+        |     [callee's outgoing memory arguments]     |
+        |==============================================|
+        | [callee's outgoing argument area (32 bytes)] |
+        |==============================================| <- sp
+
+  Notes:
+
+  r1 and r30 must be saved if debugging.
+
+  fp (if present) is located two words down from the local
+  variable space.
+  */
+
+static void output_reg_adjust ();
+static void preserve_registers ();
+static void output_tdesc ();
+
+static int  nregs;
+static char save_regs[FIRST_PSEUDO_REGISTER];
+static int  frame_laid_out;
+static int  frame_size;
+static int  variable_args_p;
+
+extern char call_used_regs[];
+extern int  current_function_pretend_args_size;
+extern int  current_function_outgoing_args_size;
+extern int  frame_pointer_needed;
+
+#define FIRST_OCS_PRESERVE_REGISTER	14
+#define LAST_OCS_PRESERVE_REGISTER	30
+
+#define STACK_UNIT_BOUNDARY (STACK_BOUNDARY / BITS_PER_UNIT)
+#define ROUND_CALL_BLOCK_SIZE(BYTES) \
+  (((BYTES) + (STACK_UNIT_BOUNDARY - 1)) & ~(STACK_UNIT_BOUNDARY - 1))
+
+/* Establish the position of the FP relative to the SP.  This is done
+   either during FUNCTION_PROLOGUE or by INITIAL_ELIMINATION_OFFSET.  */
+
+void
+m88k_layout_frame ()
+{
+  int regno, sp_size;
+
+  frame_laid_out++;
+
+  bzero ((char *) &save_regs[0], sizeof (save_regs));
+  sp_size = nregs = 0;
+  frame_size = get_frame_size ();
+
+  /* Since profiling requires a call, make sure r1 is saved.  */
+  if (profile_flag)
+    save_regs[1] = 1;
+
+  /* If we are producing debug information, store r1 and r30 where the
+     debugger wants to find them (r30 at r30+0, r1 at r30+4).  Space has
+     already been reserved for r1/r30 in STARTING_FRAME_OFFSET.  */
+  if (write_symbols != NO_DEBUG && !TARGET_OCS_FRAME_POSITION)
+    save_regs[1] = 1;
+
+  /* If there is a call, alloca is used, __builtin_alloca is used, or
+     a dynamic-sized object is defined, add the 8 additional words
+     for the callee's argument area.  The common denominator is that the
+     FP is required.  may_call_alloca only gets calls to alloca;
+     current_function_calls_alloca gets alloca and __builtin_alloca.  */
+  if (regs_ever_live[1] || frame_pointer_needed)
+    {
+      save_regs[1] = 1;
+      sp_size += REG_PARM_STACK_SPACE (0);
+    }
+
+  /* If we are producing PIC, save the addressing base register and r1.  */
+  if (flag_pic && current_function_uses_pic_offset_table)
+    {
+      save_regs[PIC_OFFSET_TABLE_REGNUM] = 1;
+      nregs++;
+    }
+
+  /* If a frame is requested, save the previous FP, and the return
+     address (r1), so that a traceback can be done without using tdesc
+     information.  */
+  if (frame_pointer_needed)
+    save_regs[FRAME_POINTER_REGNUM] = save_regs[1] = 1;
+
+  /* Figure out which normal register(s) needs to be saved.  */
+  for (regno = 2; regno < FRAME_POINTER_REGNUM; regno++)
+    if (regs_ever_live[regno] && ! call_used_regs[regno])
+      {
+	save_regs[regno] = 1;
+	nregs++;
+      }
+
+  /* Achieve greatest use of double memory ops.  Either we end up saving
+     r30 or we use that slot to align the regsters we do save.  */
+  if (nregs >= 2 && save_regs[1] && !save_regs[FRAME_POINTER_REGNUM])
+    sp_size += 4;
+
+  nregs += save_regs[1] + save_regs[FRAME_POINTER_REGNUM];
+  sp_size += 4 * nregs;
+  sp_size += current_function_outgoing_args_size;
+
+  /* The first two saved registers are placed above the new frame pointer
+     if any.  In the only case this matters, they are r1 and r30. */
+  if (frame_pointer_needed || sp_size)
+    {
+      m88k_fp_offset = ROUND_CALL_BLOCK_SIZE (sp_size - STARTING_FRAME_OFFSET);
+      m88k_stack_size = m88k_fp_offset + STARTING_FRAME_OFFSET;
+    }
+  else
+    {
+      m88k_stack_size = m88k_fp_offset = 0;
+    }
+
+  /* First, combine m88k_stack_size and size.  If m88k_stack_size is
+     non-zero, align the frame size to 8 mod 16; otherwise align the
+     frame size to 0 mod 16.  (If stacks are 8 byte aligned, this ends
+     up as a NOP.  */
+  {
+    int need
+      = ((m88k_stack_size ? STACK_UNIT_BOUNDARY - STARTING_FRAME_OFFSET : 0)
+	 - (frame_size % STACK_UNIT_BOUNDARY));
+    if (need)
+      {
+	if (need < 0)
+	  need += STACK_UNIT_BOUNDARY;
+	(void) assign_stack_local (BLKmode, need, BITS_PER_UNIT);
+	frame_size = get_frame_size ();
+      }
+    m88k_stack_size
+      = ROUND_CALL_BLOCK_SIZE (m88k_stack_size + frame_size
+			       + current_function_pretend_args_size);
+  }
+}
+
+/* Return true if this function is known to have a null epilogue.  */
+
+int
+null_epilogue ()
+{
+  if (! reload_completed)
+    return 0;
+  if (! frame_laid_out)
+    m88k_layout_frame ();
+  return (! frame_pointer_needed
+	  && nregs == 0
+	  && m88k_stack_size == 0);
+}
+
+/* Determine the number of instructions needed for the function epilogue.  */
+
+#define MAX_EPILOGUE_DELAY_INSNS 4
+
+static char epilogue_dead_regs[FIRST_PSEUDO_REGISTER];
+
+delay_slots_for_epilogue ()
+{
+  register int insns = save_regs[1] + save_regs[FRAME_POINTER_REGNUM];
+  register int regs = nregs - insns;
+
+  if (regs > 3)
+    insns += 1 + (regs & 1);
+  else if (nregs == 4)
+    /* This is a special cases of ld/ld/ld.d which has no start-up delay.  */
+    return 0;
+
+  if (insns)
+    {
+      bzero ((char *) &epilogue_dead_regs[0], sizeof (epilogue_dead_regs));
+      epilogue_dead_regs[1] = save_regs[1];
+      epilogue_dead_regs[STACK_POINTER_REGNUM] = frame_pointer_needed;
+      epilogue_dead_regs[TEMP_REGNUM] = ! ADD_INTVAL (m88k_fp_offset);
+    }
+
+  return insns;
+}
+
+/* Return 1 if X is safe to use as an epilogue insn.  */
+
+int
+ok_for_epilogue_p (x)
+     rtx x;
+{
+  register char *fmt;
+  register int i, j;
+
+  switch (GET_CODE (x))
+    {
+    case REG:
+      for (i = REGNO (x), j = i + HARD_REGNO_NREGS (i, GET_MODE (x));
+	   i < j;
+	   i++)
+	if (epilogue_dead_regs[i])
+	  return 0;
+
+    case CONST_INT:
+    case CONST_DOUBLE:
+    case CONST:
+    case PC:
+    case CC0:
+    case LABEL_REF:
+    case SYMBOL_REF:
+    case CODE_LABEL:
+      return 1;
+    }
+
+  fmt = GET_RTX_FORMAT (GET_CODE (x));
+  for (i = GET_RTX_LENGTH (GET_CODE (x)) - 1; i >= 0; i--)
+    {
+      if (fmt[i] == 'e')
+	{
+	  if (!ok_for_epilogue_p (XEXP (x, i)))
+	    return 0;
+	}
+      else if (fmt[i] == 'E')
+	{
+	  for (j = XVECLEN (x, i) - 1; j >= 0; j--)
+	    if (!ok_for_epilogue_p (XVECEXP (x, i, j)))
+	      return 0;
+	}
+    }
+  return 1;
+}
+
+int
+eligible_for_epilogue_delay (insn)
+     rtx insn;
+{
+  switch (get_attr_type (insn))
+    {
+    case TYPE_STORE:
+    case TYPE_LOADA:
+    case TYPE_ARITH:
+    case TYPE_MARITH:
+    case TYPE_MSTORE:
+      return ok_for_epilogue_p (PATTERN (insn));
+    default:
+      return 0;
+    }
+}
+
+/* Determine if the current function has any references to the arg pointer.
+   This is done indirectly by examining the DECL_ARGUMENTS' DECL_RTL.
+   It is OK to return TRUE if there are no references, but FALSE must be
+   correct.  */
+
+static int
+uses_arg_area_p ()
+{
+  register tree parm;
+
+  if (current_function_decl == 0
+      || current_function_varargs
+      || variable_args_p)
+    return 1;
+
+  for (parm = DECL_ARGUMENTS (current_function_decl);
+       parm;
+       parm = TREE_CHAIN (parm))
+    {
+      if (DECL_RTL (parm) == 0
+	  || GET_CODE (DECL_RTL (parm)) == MEM)
+	return 1;
+
+      if (DECL_INCOMING_RTL (parm) == 0
+	  || GET_CODE (DECL_INCOMING_RTL (parm)) == MEM)
+	return 1;
+    }
+  return 0;
+}
+
+void
+m88k_output_prologue (stream, size)
+     FILE *stream;
+     int size;
+{
+  int old_fp_offset = m88k_fp_offset;
+  int old_stack_size = m88k_stack_size;
+
+  m88k_layout_frame ();
+#if (MONITOR_GCC & 0x8) /* Watch for suspicious register elimination changes.  */
+  if (frame_laid_out > 1)
+    {
+      if (old_fp_offset != m88k_fp_offset)
+	warning ("Internal gcc error: FP offset has changed by %d bytes",
+		 m88k_fp_offset - old_fp_offset);
+      if (old_stack_size != m88k_stack_size)
+	warning ("Internal gcc error: stack size has changed by %d bytes",
+		 m88k_stack_size - old_stack_size);
+    }
+#endif
+  frame_laid_out = 0;
+
+  if (TARGET_OPTIMIZE_ARG_AREA
+      && m88k_stack_size
+      && ! uses_arg_area_p ())
+    {
+      /* The incoming argument area is used for stack space if it is not
+	 used (or if -mno-use-arg-area is given).  */
+      if ((m88k_stack_size -= REG_PARM_STACK_SPACE (0)) < 0)
+	m88k_stack_size = 0;
+    }
+
+  if (m88k_stack_size)
+    output_reg_adjust (stream, 31, 31, -m88k_stack_size, 0);
+
+  if (nregs)
+    preserve_registers (stream, m88k_fp_offset + 4, 1);
+
+  if (frame_pointer_needed)
+    output_reg_adjust (stream, 30, 31, m88k_fp_offset, 0);
+
+  if (TARGET_OCS_DEBUG_INFO)
+    PUT_OCS_FUNCTION_START (stream);
+
+  if (flag_pic && save_regs[PIC_OFFSET_TABLE_REGNUM])
+    {
+      char label[256];
+
+      if (! save_regs[1])
+	fprintf (stream, "\tor\t %s,%s,0\n",
+		 reg_names[TEMP_REGNUM], reg_names[1]);
+      ASM_GENERATE_INTERNAL_LABEL (label, "Lab", m88k_function_number);
+      fprintf (stream, "\tbsr.n\t %s\n", &label[1]);
+      fprintf (stream, "\tor.u\t %s,%s,%shi16(%s#abdiff)\n",
+	       reg_names[PIC_OFFSET_TABLE_REGNUM], reg_names[0],
+	       m88k_pound_sign, &label[1]);
+      ASM_OUTPUT_INTERNAL_LABEL (stream, "Lab", m88k_function_number);
+      fprintf (stream, "\tor\t %s,%s,%slo16(%s#abdiff)\n",
+	       reg_names[PIC_OFFSET_TABLE_REGNUM],
+	       reg_names[PIC_OFFSET_TABLE_REGNUM],
+	       m88k_pound_sign, &label[1]);
+      fprintf (stream, "\taddu\t %s,%s,%s\n",
+	       reg_names[PIC_OFFSET_TABLE_REGNUM],
+	       reg_names[PIC_OFFSET_TABLE_REGNUM], reg_names[1]);
+      if (! save_regs[1])
+	fprintf (stream, "\tor\t %s,%s,0\n",
+		 reg_names[1], reg_names[TEMP_REGNUM]);
+    }
+
+  m88k_prologue_done = 1;	/* it's ok now to put out ln directives */
+}
+
+/* This function generates the assembly code for function exit,
+   on machines that need it.  Args are same as for FUNCTION_PROLOGUE.
+
+   The function epilogue should not depend on the current stack pointer!
+   It should use the frame pointer only, if there is a frame pointer.
+   This is mandatory because of alloca; we also take advantage of it to
+   omit stack adjustments before returning.  */
+
+void
+m88k_output_epilogue (stream, size)
+     FILE *stream;
+     int size;
+{
+  rtx insn = get_last_insn ();
+#if (MONITOR_GCC & 0x4) /* What are interesting prologue/epiloge values?  */
+  fprintf (stream, "; size = %d, m88k_fp_offset = %d, m88k_stack_size = %d\n",
+	   size, m88k_fp_offset, m88k_stack_size);
+#endif
+
+  output_short_branch_defs (stream);
+
+  if (TARGET_OCS_DEBUG_INFO)
+    PUT_OCS_FUNCTION_END (stream);
+
+  /* If the last insn was a BARRIER, we don't have to write any code.  */
+  if (GET_CODE (insn) == NOTE)
+    insn = prev_nonnote_insn (insn);
+  if (insn && GET_CODE (insn) == BARRIER)
+    {
+      if (current_function_epilogue_delay_list)
+	abort ();
+    }
+  else
+    {
+      if (frame_pointer_needed)
+	output_reg_adjust (stream, 31, 30, -m88k_fp_offset, 0);
+
+      if (nregs)
+	preserve_registers (stream, m88k_fp_offset + 4, 0);
+
+      output_reg_adjust (stream, 31, 31, m88k_stack_size, 1);
+    }
+
+  fprintf (stream, "\n");
+
+  if (TARGET_OCS_DEBUG_INFO)
+    output_tdesc (stream, m88k_fp_offset + 4);
+
+  m88k_function_number++;
+  m88k_prologue_done	= 0;		/* don't put out ln directives */
+  variable_args_p	= 0;		/* has variable args */
+}
+
+/* Output code to STREAM to set DSTREG to SRCREG + AMOUNT.  Issue
+   a return instruction and use it's delay slot based on RETURN_P.  */
+
+static void
+output_reg_adjust (stream, dstreg, srcreg, amount, return_p)
+     FILE *stream;
+     int dstreg, srcreg, amount, return_p;
+{
+  char *opname;
+  char incr[256];
+
+  if (amount < 0)
+    {
+      opname = "subu";
+      amount = -amount;
+    }
+  else
+    opname = "addu";
+
+  if (amount == 0 && dstreg == srcreg)
+    {
+      if (return_p)
+	fprintf (stream, "\tjmp\t %s\n", reg_names[1]);
+      return;
+    }
+  else if (SMALL_INTVAL (amount))
+    sprintf (incr, "\t%s\t %s,%s,%d", opname,
+	     reg_names[dstreg], reg_names[srcreg], amount);
+  else
+    {
+      rtx operands[2];
+
+      operands[0] = gen_rtx (REG, SImode, TEMP_REGNUM);
+      operands[1] = gen_rtx (CONST_INT, VOIDmode, amount);
+      output_asm_insn (output_load_const_int (SImode, operands),
+		       operands);
+      sprintf (incr, "\t%s\t %s,%s,%s", opname,
+	       reg_names[dstreg], reg_names[srcreg], reg_names[TEMP_REGNUM]);
+    }
+
+  if (!return_p)
+    fprintf (stream, "%s\n", incr);
+  else if (flag_delayed_branch)
+    fprintf (stream, "\tjmp.n\t %s\n%s\n", reg_names[1], incr);
+  else
+    fprintf (stream, "%s\n\tjmp\t %s\n", incr, reg_names[1]);
+}
+
+/* Save/restore the preserve registers.  base is the highest offset from
+   r31 at which a register is stored.  store_p is true if stores are to
+   be done; otherwise loads.  When loading, output the epilogue delay
+   insns.  */
+
+static void
+preserve_registers (stream, base, store_p)
+     FILE *stream;
+     int base;
+     int store_p;
+{
+  int regno, offset;
+  char *fmt = (store_p ? "\tst%s\t %s,%s,%d\n" : "\tld%s\t %s,%s,%d\n");
+  struct mem_op {
+    int regno;
+    int nregs;
+    int offset;
+  } mem_op[FIRST_PSEUDO_REGISTER];
+  struct mem_op *mo_ptr = mem_op;
+
+  /* The 88open OCS mandates that preserved registers be stored in
+     increasing order.  For compatibility with current practice,
+     the order is r1, r30, then the preserve registers.  */
+
+  offset = base;
+  if (save_regs[1])
+    {
+      /* An extra word is given in this case to make best use of double
+	 memory ops.  */
+      if (nregs > 2 && !save_regs[FRAME_POINTER_REGNUM])
+	offset -= 4;
+      fprintf (stream, fmt, "", reg_names[1], reg_names[31], offset);
+      offset -= 4;
+      base = offset;
+    }
+
+  /* Walk the registers to save recording all single memory operations.  */
+  for (regno = FRAME_POINTER_REGNUM; regno > 1; regno--)
+    if (save_regs[regno])
+      {
+	if ((offset & 7) != 4 || (regno & 1) != 1 || !save_regs[regno-1])
+	  {
+	    mo_ptr->nregs = 1;
+	    mo_ptr->regno = regno;
+	    mo_ptr->offset = offset;
+	    mo_ptr++;
+	    offset -= 4;
+	  }
+        else
+	  {
+	    regno--;
+	    offset -= 2*4;
+	  }
+      }
+
+  /* Walk the registers to save recording all double memory operations.
+     This avoids a delay in the epilogue (ld.d/ld).  */
+  offset = base;
+  for (regno = FRAME_POINTER_REGNUM; regno > 1; regno--)
+    if (save_regs[regno])
+      {
+	if ((offset & 7) != 4 || (regno & 1) != 1 || !save_regs[regno-1])
+	  {
+	    offset -= 4;
+	  }
+        else
+	  {
+	    mo_ptr->nregs = 2;
+	    mo_ptr->regno = regno-1;
+	    mo_ptr->offset = offset-4;
+	    mo_ptr++;
+	    regno--;
+	    offset -= 2*4;
+	  }
+      }
+  mo_ptr->regno = 0;
+
+  /* Output the delay insns interleaved with the memory operations.  */
+  if (! store_p && current_function_epilogue_delay_list)
+    {
+      rtx delay_insns = current_function_epilogue_delay_list;
+      rtx insn;
+
+      /* The first delay insn goes after the restore of r1.  */
+      if (save_regs[1])
+	{
+	  final_scan_insn (XEXP (delay_insns, 0), stream, 1, 0, 1);
+	  delay_insns = XEXP (delay_insns, 1);
+	}
+
+      while (delay_insns)
+	{
+	  /* Find a memory operation that doesn't conflict with this insn.  */
+	  for (mo_ptr = mem_op; mo_ptr->regno != 0; mo_ptr++)
+	    {
+	      if (mo_ptr->nregs)
+		{
+		  rtx ok_insns = delay_insns;
+		  int i;
+
+		  for (i = 0; i < mo_ptr->nregs; i++)
+		    epilogue_dead_regs[mo_ptr->regno + i] = 1;
+
+		  while (ok_insns)
+		    {
+		      insn = XEXP (ok_insns, 0);
+		      ok_insns = XEXP (ok_insns, 1);
+
+		      if (! ok_for_epilogue_p (PATTERN (insn)))
+			{
+			  for (i = 0; i < mo_ptr->nregs; i++)
+			    epilogue_dead_regs[mo_ptr->regno + i] = 0;
+			  insn = 0;
+			  break; /* foreach delay insn */
+			}
+		    }
+		  if (insn)
+		    {
+		      fprintf (stream, fmt, mo_ptr->nregs > 1 ? ".d" : "",
+			       reg_names[mo_ptr->regno], reg_names[31],
+			       mo_ptr->offset);
+		      mo_ptr->nregs = 0;
+		      break; /* foreach memory operation */
+		    }
+		}
+	    }
+	  final_scan_insn (XEXP (delay_insns, 0), stream, 1, 0, 1);
+	  delay_insns = XEXP (delay_insns, 1);
+	}
+    }
+
+  /* Output the memory operations.  */
+  for (mo_ptr = mem_op; mo_ptr->regno; mo_ptr++)
+    {
+      if (mo_ptr->nregs)
+	fprintf (stream, fmt, mo_ptr->nregs > 1 ? ".d" : "",
+		 reg_names[mo_ptr->regno], reg_names[31], mo_ptr->offset);
+    }
+}
+
+/* Convert the address expression REG to a CFA offset.  */
+
+int
+m88k_debugger_offset (reg, offset)
+     register rtx reg;
+     register int offset;
+{
+  if (GET_CODE (reg) == PLUS)
+    {
+      offset = INTVAL (XEXP (reg, 1));
+      reg = XEXP (reg, 0);
+    }
+
+  /* Put the offset in terms of the CFA (arg pointer).  */
+  if (reg == frame_pointer_rtx)
+    offset += m88k_fp_offset - m88k_stack_size;
+  else if (reg == stack_pointer_rtx)
+    offset -= m88k_stack_size;
+  else if (reg != arg_pointer_rtx)
+    {
+      if (! (GET_CODE (reg) == REG
+	     && REGNO (reg) >= FIRST_PSEUDO_REGISTER))
+	/* @@ For now, I'd like to know if this happens.  */
+	warning ("Internal gcc error: Can't express symbolic location");
+      return 0;
+    }
+
+  return offset;
+}
+
+/* Output the 88open OCS proscribed text description information.
+   The information is:
+        0  8: zero
+	0 22: info-byte-length (16 bytes)
+	0  2: info-alignment (word 2)
+	1 32: info-protocol (version 1)
+	2 32: starting-address (inclusive, not counting prologue)
+	3 32: ending-address (exclusive, not counting epilog)
+	4  8: info-variant (version 1)
+	4 17: register-save-mask (from register 14 to 30)
+	4  1: zero
+	4  1: return-address-info-discriminant
+	4  5: frame-address-register
+	5 32: frame-address-offset
+	6 32: return-address-info
+	7 32: register-save-offset */
+
+static void
+output_tdesc (file, offset)
+     FILE *file;
+     int offset;
+{
+  int regno, i;
+  long mask, return_address_info, register_save_offset;
+  char buf[256];
+
+  for (mask = 0, i = 0, regno = FIRST_OCS_PRESERVE_REGISTER;
+       regno <= LAST_OCS_PRESERVE_REGISTER;
+       regno++)
+    {
+      mask <<= 1;
+      if (save_regs[regno])
+	{
+	  mask |= 1;
+	  i++;
+	}
+    }
+
+  if (save_regs[1])
+    {
+      if (nregs > 2 && !save_regs[FRAME_POINTER_REGNUM])
+	offset -= 4;
+      return_address_info = - m88k_stack_size + offset;
+      register_save_offset = return_address_info - i*4;
+    }
+  else
+    {
+      return_address_info = 1;
+      register_save_offset = - m88k_stack_size + offset + 4 - i*4;
+    }
+
+  tdesc_section ();
+
+  fprintf (file, "%s\t %d", INT_ASM_OP, (16 << 2) | 2 /* 8:0,22:16,2:2 */);
+  fprintf (file, ",%d", flag_pic ? 2 : 1);
+
+  ASM_GENERATE_INTERNAL_LABEL (buf, OCS_START_PREFIX, m88k_function_number);
+  fprintf (file, ",%s%s", buf+1, flag_pic ? "#rel" : "");
+  ASM_GENERATE_INTERNAL_LABEL (buf, OCS_END_PREFIX, m88k_function_number);
+  fprintf (file, ",%s%s", buf+1, flag_pic ? "#rel" : "");
+
+  fprintf (file, ",0x%x", /* 8:1,17:0x%.3x,1:0,1:%d,5:%d */
+	   (1 << (17+1+1+5)) |
+	   (mask << (1+1+5)) |
+	   ((!!save_regs[1]) << 5) |
+	   ((frame_pointer_needed
+	      ? FRAME_POINTER_REGNUM
+	      : STACK_POINTER_REGNUM)));
+
+  fprintf (file, ",0x%x", (m88k_stack_size
+			   - (frame_pointer_needed ? m88k_fp_offset : 0)));
+  fprintf (file, ",0x%x", return_address_info);
+  fprintf (file, ",0x%x\n", register_save_offset);
+
+  text_section ();
+}
+
+/* Output assembler code to FILE to increment profiler label # LABELNO
+   for profiling a function entry.  NAME is the mcount function name
+   (varies), SAVEP indicates whether the parameter registers need to
+   be saved and restored.  */
+
+void
+output_function_profiler (file, labelno, name, savep)
+     FILE *file;
+     int labelno;
+     char *name;
+     int savep;
+{
+  char label[256];
+  char dbi[256];
+  char *temp = (savep ? reg_names[2] : reg_names[10]);
+
+  if (savep)
+    {
+      fprintf (file, "\tsubu\t %s,%s,64\n", reg_names[31], reg_names[31]);
+      fprintf (file, "\tst.d\t %s,%s,32\n", reg_names[2], reg_names[31]);
+      fprintf (file, "\tst.d\t %s,%s,40\n", reg_names[4], reg_names[31]);
+      fprintf (file, "\tst.d\t %s,%s,48\n", reg_names[6], reg_names[31]);
+      fprintf (file, "\tst.d\t %s,%s,56\n", reg_names[8], reg_names[31]);
+    }
+
+  ASM_GENERATE_INTERNAL_LABEL (label, "LP", labelno);
+  if (flag_pic == 2)
+    {
+      fprintf (file, "\tor.u\t %s,%s,%shi16(%s#got_rel)\n",
+	       temp, reg_names[0], m88k_pound_sign, &label[1]);
+      fprintf (file, "\tor\t %s,%s,%slo16(%s#got_rel)\n",
+	       temp, temp, m88k_pound_sign, &label[1]);
+      sprintf (dbi, "\tld\t %s,%s,%s\n", temp,
+	       reg_names[PIC_OFFSET_TABLE_REGNUM], temp);
+    }
+  else if (flag_pic)
+    {
+      sprintf (dbi, "\tld\t %s,%s,%s#got_rel\n", temp,
+	       reg_names[PIC_OFFSET_TABLE_REGNUM], &label[1]);
+    }
+  else
+    {
+      fprintf (file, "\tor.u\t %s,%s,%shi16(%s)\n",
+	       temp, reg_names[0], m88k_pound_sign, &label[1]);
+      sprintf (dbi, "\tor\t %s,%s,%slo16(%s)\n",
+	       temp, temp, m88k_pound_sign, &label[1]);
+    }
+
+  if (flag_pic)
+    fprintf (file, "\tbsr.n\t %s#plt\n", name);
+  else
+    fprintf (file, "\tbsr.n\t %s\n", name);
+  fputs (dbi, file);
+
+  if (savep)
+    {
+      fprintf (file, "\tld.d\t %s,%s,32\n", reg_names[2], reg_names[31]);
+      fprintf (file, "\tld.d\t %s,%s,40\n", reg_names[4], reg_names[31]);
+      fprintf (file, "\tld.d\t %s,%s,48\n", reg_names[6], reg_names[31]);
+      fprintf (file, "\tld.d\t %s,%s,56\n", reg_names[8], reg_names[31]);
+      fprintf (file, "\taddu\t %s,%s,64\n", reg_names[31], reg_names[31]);
+    }
+}
+
+/* Output assembler code to FILE to initialize basic-block profiling for
+   the current module.  LABELNO is unique to each instance.  */
+
+void
+output_function_block_profiler (file, labelno)
+     FILE *file;
+     int labelno;
+{
+  char block[256];
+  char label[256];
+
+  ASM_GENERATE_INTERNAL_LABEL (block, "LPBX", 0);
+  ASM_GENERATE_INTERNAL_LABEL (label, "LPY", labelno);
+
+  /* @@ Need to deal with PIC.  I'm not sure what the requirements are on
+     register usage, so I used r26/r27 to be safe.  */
+  fprintf (file, "\tor.u\t %s,%s,%shi16(%s)\n", reg_names[27], reg_names[0],
+		 m88k_pound_sign, &block[1]);
+  fprintf (file, "\tld\t %s,%s,%slo16(%s)\n", reg_names[26], reg_names[27],
+		 m88k_pound_sign, &block[1]);
+  fprintf (file, "\tbcnd\t %sne0,%s,%s\n",
+		 m88k_pound_sign, reg_names[26], &label[1]);
+  fputs ("\tbsr.n\t ", file);
+  ASM_OUTPUT_LABELREF (file, "__bb_init_func");
+  putc ('\n', file);
+  fprintf (file, "\tor\t %s,%s,%slo16(%s)\n", reg_names[2], reg_names[27],
+		 m88k_pound_sign, &block[1]);
+  ASM_OUTPUT_INTERNAL_LABEL (file, "LPY", labelno);
+}
+
+/* Output assembler code to FILE to increment the count associated with
+   the basic block number BLOCKNO.  */
+
+void
+output_block_profiler (file, blockno)
+     FILE *file;
+     int blockno;
+{
+  char block[256];
+
+  ASM_GENERATE_INTERNAL_LABEL (block, "LPBX", 0);
+
+  /* @@ Need to deal with PIC.  I'm not sure what the requirements are on
+     register usage, so I used r26/r27 to be safe.  */
+  fprintf (file, "\tor.u\t %s,%s,%shi16(%s+%d)\n", reg_names[27], reg_names[0],
+		 m88k_pound_sign, &block[1], 4 * blockno);
+  fprintf (file, "\tld\t %s,%s,%slo16(%s+%d)\n", reg_names[26], reg_names[27],
+		 m88k_pound_sign, &block[1], 4 * blockno);
+  fprintf (file, "\taddu\t %s,%s,1\n", reg_names[26], reg_names[26]);
+  fprintf (file, "\tst\t %s,%s,%slo16(%s+%d)\n", reg_names[26], reg_names[27],
+		 m88k_pound_sign, &block[1], 4 * blockno);
+}
+
+/* Determine whether a function argument is passed in a register, and
+   which register.
+
+   The arguments are CUM, which summarizes all the previous
+   arguments; MODE, the machine mode of the argument; TYPE,
+   the data type of the argument as a tree node or 0 if that is not known
+   (which happens for C support library functions); and NAMED,
+   which is 1 for an ordinary argument and 0 for nameless arguments that
+   correspond to `...' in the called function's prototype.
+
+   The value of the expression should either be a `reg' RTX for the
+   hard register in which to pass the argument, or zero to pass the
+   argument on the stack.
+
+   On the m88000 the first eight words of args are normally in registers
+   and the rest are pushed.  Double precision floating point must be
+   double word aligned (and if in a register, starting on an even
+   register). Structures and unions which are not 4 byte, and word
+   aligned are passed in memory rather than registers, even if they
+   would fit completely in the registers under OCS rules.
+
+   Note that FUNCTION_ARG and FUNCTION_INCOMING_ARG were different.
+   For structures that are passed in memory, but could have been
+   passed in registers, we first load the structure into the
+   register, and then when the last argument is passed, we store
+   the registers into the stack locations.  This fixes some bugs
+   where GCC did not expect to have register arguments, followed
+   by stack arguments, followed by register arguments.  */
+
+struct rtx_def *
+m88k_function_arg (args_so_far, mode, type, named)
+     CUMULATIVE_ARGS args_so_far;
+     enum machine_mode mode;
+     tree type;
+     int named;
+{
+  int bytes, words;
+
+  if (type != 0			/* undo putting struct in register */
+      && (TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE))
+    mode = BLKmode;
+
+  if (mode == BLKmode && TARGET_WARN_PASS_STRUCT)
+    warning ("argument #%d is a structure", args_so_far + 1);
+
+  if ((args_so_far & 1) != 0
+      && (mode == DImode || mode == DFmode
+	  || (type != 0 && TYPE_ALIGN (type) > 32)))
+    args_so_far++;
+
+#ifdef ESKIT
+  if (no_reg_params)
+    return (rtx) 0;             /* don't put args in registers */
+#endif
+
+  if (type == 0 && mode == BLKmode)
+    abort ();	/* m88k_function_arg argument `type' is NULL for BLKmode. */
+
+  bytes = (mode != BLKmode) ? GET_MODE_SIZE (mode) : int_size_in_bytes (type);
+  words = (bytes + 3) / 4;
+
+  if (args_so_far + words > 8)
+    return (rtx) 0;             /* args have exhausted registers */
+
+  else if (mode == BLKmode
+	   && (TYPE_ALIGN (type) != BITS_PER_WORD
+	       || bytes != UNITS_PER_WORD))
+    return (rtx) 0;
+
+  return gen_rtx (REG,
+		  ((mode == BLKmode) ? TYPE_MODE (type) : mode),
+		  2 + args_so_far);
+}
+
+/* Do what is necessary for `va_start'.  The argument is ignored;
+   We look at the current function to determine if stdargs or varargs
+   is used and fill in an initial va_list.  A pointer to this constructor
+   is returned.  */
+
+struct rtx_def *
+m88k_builtin_saveregs (arglist)
+     tree arglist;
+{
+  rtx block, addr, argsize;
+  tree fntype = TREE_TYPE (current_function_decl);
+  int argadj = ((!(TYPE_ARG_TYPES (fntype) != 0
+		   && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype)))
+		       != void_type_node)))
+		? -UNITS_PER_WORD : 0) + UNITS_PER_WORD - 1;
+  int fixed;
+  variable_args_p = 1;
+
+  if (CONSTANT_P (current_function_arg_offset_rtx))
+    {
+      fixed = (XINT (current_function_arg_offset_rtx, 0)
+	       + argadj) / UNITS_PER_WORD;
+      argsize = gen_rtx (CONST_INT, VOIDmode, fixed);
+    }
+  else
+    {
+      fixed = 0;
+      argsize = plus_constant (current_function_arg_offset_rtx, argadj);
+      argsize = expand_shift (RSHIFT_EXPR, Pmode, argsize,
+			      build_int_2 (2, 0), argsize, 0);
+    }
+
+  /* Allocate the va_list constructor */
+  block = assign_stack_local (BLKmode, 3 * UNITS_PER_WORD, BITS_PER_UNIT);
+  RTX_UNCHANGING_P (block) = 1;
+  RTX_UNCHANGING_P (XEXP (block, 0)) = 1;
+
+  /* Store the argsize as the __va_arg member.  */
+  emit_move_insn (change_address (block, SImode, XEXP (block, 0)),
+		  argsize);
+
+  /* Store the arg pointer in the __va_stk member.  */
+  emit_move_insn (change_address (block, Pmode,
+				  plus_constant (XEXP (block, 0),
+						 UNITS_PER_WORD)),
+		  copy_to_reg (virtual_incoming_args_rtx));
+
+  /* Allocate the register space, and store it as the __va_reg member.  */
+  addr = assign_stack_local (BLKmode, 8 * UNITS_PER_WORD, -1);
+  MEM_IN_STRUCT_P (addr) = 1;
+  RTX_UNCHANGING_P (addr) = 1;
+  RTX_UNCHANGING_P (XEXP (addr, 0)) = 1;
+  emit_move_insn (change_address (block, Pmode,
+				  plus_constant (XEXP (block, 0),
+						 2 * UNITS_PER_WORD)),
+		  copy_to_reg (XEXP (addr, 0)));
+
+  /* Now store the incoming registers and return the address of the
+     va_list constructor.  */
+  if (fixed < 8)
+      move_block_from_reg
+	(2 + fixed,
+	 change_address (addr, Pmode,
+			 plus_constant (XEXP (addr, 0),
+					fixed * UNITS_PER_WORD)),
+	 8 - fixed);
+
+  return copy_to_reg (XEXP (block, 0));
+}
+
+/* If cmpsi has not been generated, emit code to do the test.  Return the
+   expression describing the test of operator OP.  */
+
+rtx
+emit_test (op, mode)
+     enum rtx_code op;
+     enum machine_mode mode;
+{
+  if (m88k_compare_reg == 0)
+    emit_insn (gen_test (m88k_compare_op0, m88k_compare_op1));
+  return (gen_rtx (op, mode, m88k_compare_reg, const0_rtx));
+}
+
+/* Determine how to best perform cmpsi/bxx, where cmpsi has a constant
+   operand.  All tests with zero (albeit swapped) and all equality tests
+   with a constant are done with bcnd.  The remaining cases are swapped
+   as needed.  */
+
+void
+emit_bcnd (op, label)
+     enum rtx_code op;
+     rtx label;
+{
+  if (m88k_compare_op1 == const0_rtx)
+    emit_jump_insn (optimize
+		    ? gen_bxx (emit_test (op, VOIDmode), label)
+		    : gen_bcnd (gen_rtx (op, VOIDmode,
+					 m88k_compare_op0, const0_rtx),
+				label));
+  else if (m88k_compare_op0 == const0_rtx)
+    emit_jump_insn (optimize
+		    ? gen_bxx (emit_test (op, VOIDmode), label)
+		    : gen_bcnd (gen_rtx (swap_condition (op), VOIDmode,
+					 m88k_compare_op1, const0_rtx),
+				label));
+  else if (op != EQ && op != NE)
+    emit_jump_insn (gen_bxx (emit_test (op, VOIDmode), label));
+  else
+    {
+      rtx zero = gen_reg_rtx (SImode);
+      rtx reg, constant;
+      int value;
+
+      if (GET_CODE (m88k_compare_op1) == CONST_INT)
+	{
+	  reg = force_reg (SImode, m88k_compare_op0);
+	  constant = m88k_compare_op1;
+	}
+      else
+	{
+	  reg = force_reg (SImode, m88k_compare_op1);
+	  constant = m88k_compare_op0;
+	}
+      value = INTVAL (constant);
+
+      /* Perform an arithmetic computation to make the compared-to value
+	 zero, but avoid loosing if the bcnd is later changed into sxx.  */
+      if (SMALL_INTVAL (value))
+	emit_jump_insn (gen_bxx (emit_test (op, VOIDmode), label));
+      else
+	{
+	  if (SMALL_INTVAL (-value))
+	    emit_insn (gen_addsi3 (zero, reg,
+				   gen_rtx (CONST_INT, VOIDmode, -value)));
+	  else
+	    emit_insn (gen_xorsi3 (zero, reg, constant));
+
+	  emit_jump_insn (gen_bcnd (gen_rtx (op, VOIDmode,
+					     zero, const0_rtx),
+				    label));
+	}
+    }
+}
+
+/* Print an operand.  Recognize special options, documented below.  */
+
+void
+print_operand (file, x, code)
+    FILE *file;
+    rtx x;
+    char code;
+{
+  enum rtx_code xc = (x ? GET_CODE (x) : UNKNOWN);
+  register int value = (xc == CONST_INT ? INTVAL (x) : 0);
+  static int sequencep;
+  static int reversep;
+
+  if (sequencep)
+    {
+      if (code < 'B' || code > 'E')
+	output_operand_lossage ("%R not followed by %B/C/D/E");
+      if (reversep)
+	xc = reverse_condition (xc);
+      sequencep = 0;
+    }
+
+  switch (code)
+    {
+    case '*': /* addressing base register for PIC */
+      fputs (reg_names[PIC_OFFSET_TABLE_REGNUM], file); return;
+
+    case '#': /* SVR4 pound-sign syntax character (empty if SVR3) */
+      fputs (m88k_pound_sign, file); return;
+
+    case 'X': /* print the upper 16 bits... */
+      value >>= 16;
+    case 'x': /* print the lower 16 bits of the integer constant in hex */
+      if (xc != CONST_INT)
+	output_operand_lossage ("invalid %x/X value");
+      fprintf (file, "0x%x", value & 0xffff); return;
+
+    case 'H': /* print the low 16 bits of the negated integer constant */
+      if (xc != CONST_INT)
+	output_operand_lossage ("invalid %H value");
+      value = -value;
+    case 'h': /* print the register or low 16 bits of the integer constant */
+      if (xc == REG)
+	goto reg;
+      if (xc != CONST_INT)
+	output_operand_lossage ("invalid %h value");
+      fprintf (file, "%d", value & 0xffff);
+      return;
+
+    case 'Q': /* print the low 8 bits of the negated integer constant */
+      if (xc != CONST_INT)
+	output_operand_lossage ("invalid %Q value");
+      value = -value;
+    case 'q': /* print the register or low 8 bits of the integer constant */
+      if (xc == REG)
+	goto reg;
+      if (xc != CONST_INT)
+	output_operand_lossage ("invalid %q value");
+      fprintf (file, "%d", value & 0xff);
+      return;
+
+    case 'w': /* print the integer constant (X == 32 ? 0 : 32 - X) */
+      if (xc != CONST_INT)
+	output_operand_lossage ("invalid %o value");
+      fprintf (file, "%d", value == 32 ? 0 : 32 - value);
+      return;
+
+    case 'p': /* print the logarithm of the integer constant */
+      if (xc != CONST_INT
+	  || (value = exact_log2 (value)) < 0)
+	output_operand_lossage ("invalid %p value");
+      fprintf (file, "%d", value);
+      return;
+
+    case 'S': /* compliment the value and then... */
+      value = ~value;
+    case 's': /* print the width and offset values forming the integer
+		 constant with a SET instruction.  See integer_ok_for_set. */
+      {
+	register unsigned mask, uval = value;
+	register int top, bottom;
+
+	if (xc != CONST_INT)
+	  output_operand_lossage ("invalid %s/S value");
+	/* All the "one" bits must be contiguous.  If so, MASK will be
+	   a power of two or zero.  */
+	mask = (uval | (uval - 1)) + 1;
+	if (!(uval && POWER_OF_2_or_0 (mask)))
+	  output_operand_lossage ("invalid %s/S value");
+	top = mask ? exact_log2 (mask) : 32;
+	bottom = exact_log2 (uval & ~(uval - 1));
+	fprintf (file,"%d<%d>", top - bottom, bottom);
+	return;
+      }
+
+    case 'P': /* print nothing if pc_rtx; output label_ref */
+      if (xc == LABEL_REF)
+	output_addr_const (file, x);
+      else if (xc != PC)
+	output_operand_lossage ("invalid %P operand");
+      return;
+
+    case 'L': /* print 0 or 1 if operand is label_ref and then...  */
+      fputc (xc == LABEL_REF ? '1' : '0', file);
+    case '.': /* print .n if delay slot is used */
+      fputs ((final_sequence
+	      && ! INSN_ANNULLED_BRANCH_P (XVECEXP (final_sequence, 0, 0)))
+	     ? ".n\t" : "\t", file);
+      return;
+
+    case 'R': /* reverse the condition of the next print_operand
+		 if operand is a label_ref.  */
+      sequencep++;
+      reversep = (xc == LABEL_REF);
+      return;
+
+    case 'B': /* bcnd branch values */
+      fputs (m88k_pound_sign, file);
+      switch (xc)
+	{
+	case EQ: fputs ("eq0", file); return;
+	case NE: fputs ("ne0", file); return;
+	case GT: fputs ("gt0", file); return;
+	case LE: fputs ("le0", file); return;
+	case LT: fputs ("lt0", file); return;
+	case GE: fputs ("ge0", file); return;
+	default: output_operand_lossage ("invalid %B value");
+	}
+
+    case 'C': /* bb0/bb1 branch values for comparisons */
+      fputs (m88k_pound_sign, file);
+      switch (xc)
+	{
+	case EQ:  fputs ("eq", file); return;
+	case NE:  fputs ("ne", file); return;
+	case GT:  fputs ("gt", file); return;
+	case LE:  fputs ("le", file); return;
+	case LT:  fputs ("lt", file); return;
+	case GE:  fputs ("ge", file); return;
+	case GTU: fputs ("hi", file); return;
+	case LEU: fputs ("ls", file); return;
+	case LTU: fputs ("lo", file); return;
+	case GEU: fputs ("hs", file); return;
+	default:  output_operand_lossage ("invalid %C value");
+	}
+
+    case 'D': /* bcnd branch values for float comparisons */
+      switch (xc)
+	{
+	case EQ: fputs ("0xa", file); return;
+	case NE: fputs ("0x5", file); return;
+	case GT: fputs (m88k_pound_sign, file);
+	  fputs ("gt0", file); return;
+	case LE: fputs ("0xe", file); return;
+	case LT: fputs ("0x4", file); return;
+	case GE: fputs ("0xb", file); return;
+	default: output_operand_lossage ("invalid %D value");
+	}
+
+    case 'E': /* bcnd branch values for special integers */
+      switch (xc)
+	{
+	case EQ: fputs ("0x8", file); return;
+	case NE: fputs ("0x7", file); return;
+	default: output_operand_lossage ("invalid %E value");
+	}
+
+    case 'd': /* second register of a two register pair */
+      if (xc != REG)
+	output_operand_lossage ("`%d' operand isn't a register");
+      fputs (reg_names[REGNO (x) + 1], file);
+      return;
+
+    case 'r': /* an immediate 0 should be repesented as `r0' */
+      if (x == const0_rtx)
+	{
+	  fputs (reg_names[0], file);
+	  return;
+	}
+      else if (xc != REG)
+	output_operand_lossage ("invalid %r value");
+    case 0:
+    name:
+      if (xc == REG)
+	{
+	reg:
+	  if (REGNO (x) == ARG_POINTER_REGNUM)
+	    output_operand_lossage ("operand is r0");
+	  else
+	    fputs (reg_names[REGNO (x)], file);
+	}
+      else if (xc == PLUS)
+	output_address (x);
+      else if (xc == MEM)
+	output_address (XEXP (x, 0));
+      else if (xc == CONST_DOUBLE)
+	output_operand_lossage ("operand is const_double");
+      else
+	output_addr_const (file, x);
+      return;
+
+    case 'g': /* append #got_rel as needed */
+      if (flag_pic && (xc == SYMBOL_REF || xc == LABEL_REF))
+	{
+	  output_addr_const (file, x);
+	  fputs ("#got_rel", file);
+	  return;
+	}
+      goto name;
+
+    case 'a': /* (standard), assume operand is an address */
+    case 'c': /* (standard), assume operand is an immediate value */
+    case 'l': /* (standard), assume operand is a label_ref */
+    case 'n': /* (standard), like %c, except negate first */
+    default:
+      output_operand_lossage ("invalid code");
+    }
+}
+
+void
+print_operand_address (file, addr)
+    FILE *file;
+    rtx addr;
+{
+  register rtx reg0, reg1, temp;
+
+  switch (GET_CODE (addr))
+    {
+    case REG:
+      if (REGNO (addr) == ARG_POINTER_REGNUM)
+	abort ();
+      else
+	fprintf (file, "%s,%s", reg_names[0], reg_names [REGNO (addr)]);
+      break;
+
+    case LO_SUM:
+      fprintf (file, "%s,%slo16(",
+	       reg_names[REGNO (XEXP (addr, 0))], m88k_pound_sign);
+      output_addr_const (file, XEXP (addr, 1));
+      fputc (')', file);
+      break;
+
+    case PLUS:
+      reg0 = XEXP (addr, 0);
+      reg1 = XEXP (addr, 1);
+      if (GET_CODE (reg0) == MULT || GET_CODE (reg0) == CONST_INT)
+	{
+	  rtx tmp = reg0;
+	  reg0 = reg1;
+	  reg1 = tmp;
+	}
+
+      if ((REG_P (reg0) && REGNO (reg0) == ARG_POINTER_REGNUM)
+	  || (REG_P (reg1) && REGNO (reg1) == ARG_POINTER_REGNUM))
+	abort ();
+
+      else if (REG_P (reg0))
+	{
+	  if (REG_P (reg1))
+	    fprintf (file, "%s,%s",
+		     reg_names [REGNO (reg0)], reg_names [REGNO (reg1)]);
+
+	  else if (GET_CODE (reg1) == CONST_INT)
+	    fprintf (file, "%s,%d",
+		     reg_names [REGNO (reg0)], INTVAL (reg1));
+
+	  else if (GET_CODE (reg1) == MULT)
+	    {
+	      rtx mreg = XEXP (reg1, 0);
+	      if (REGNO (mreg) == ARG_POINTER_REGNUM)
+		abort ();
+
+	      fprintf (file, "%s[%s]", reg_names[REGNO (reg0)],
+		       reg_names[REGNO (mreg)]);
+	    }
+
+	  else if (GET_CODE (reg1) == ZERO_EXTRACT)
+	    {
+	      fprintf (file, "%s,%slo16(",
+		       reg_names[REGNO (reg0)], m88k_pound_sign);
+	      output_addr_const (file, XEXP (reg1, 0));
+	      fputc (')', file);
+	    }
+
+	  else if (flag_pic)
+	    {
+	      fprintf (file, "%s,", reg_names[REGNO (reg0)]);
+	      output_addr_const (file, reg1);
+	      fputs ("#got_rel", file);
+	    }
+	  else abort ();
+	}
+
+      else
+	abort ();
+      break;
+
+    case MULT:
+      if (REGNO (XEXP (addr, 0)) == ARG_POINTER_REGNUM)
+	abort ();
+
+      fprintf (file, "%s[%s]",
+	       reg_names[0], reg_names[REGNO (XEXP (addr, 0))]);
+      break;
+
+    case LSHIFT:
+      fprintf (file, "%s,%shi16(", reg_names[0], m88k_pound_sign);
+      output_addr_const (file, XEXP (addr, 0));
+      fputc (')', file);
+      break;
+
+    case CONST_INT:
+      fprintf (file, "%s,%d", reg_names[0], INTVAL (addr));
+      break;
+
+    default:
+      fprintf (file, "%s,", reg_names[0]);
+      if (SHORT_ADDRESS_P (addr, temp))
+	{
+	  fprintf (file, "%siw16(", m88k_pound_sign);
+	  output_addr_const (file, addr);
+	  fputc (')', file);
+	}
+      else
+	  output_addr_const (file, addr);
+    }
+}