Initial creation of sourceware repository

1 files changed, 0 insertions, 921 deletions

diff --git a/gdb/h8300-tdep.c b/gdb/h8300-tdep.c
deleted file mode 100644
index 3fbe9e1..0000000
--- a/gdb/h8300-tdep.c
+++ /dev/null
@@ -1,921 +0,0 @@
-/* Target-machine dependent code for Hitachi H8/300, for GDB.
-   Copyright (C) 1988, 1990, 1991 Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-This program 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 of the License, or
-(at your option) any later version.
-
-This program 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 this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
-
-/*
- Contributed by Steve Chamberlain
-                sac@cygnus.com
- */
-
-#include "defs.h"
-#include "frame.h"
-#include "obstack.h"
-#include "symtab.h"
-#include "dis-asm.h"
-#include "gdbcmd.h"
-#include "gdbtypes.h"
-#include "gdbcore.h"
-#include "gdb_string.h"
-#include "value.h"
-
-extern int h8300hmode, h8300smode;
-
-#undef NUM_REGS
-#define NUM_REGS 11
-
-#define UNSIGNED_SHORT(X) ((X) & 0xffff)
-
-#define IS_PUSH(x) ((x & 0xfff0)==0x6df0)
-#define IS_PUSH_FP(x) (x == 0x6df6)
-#define IS_MOVE_FP(x) (x == 0x0d76 || x == 0x0ff6)
-#define IS_MOV_SP_FP(x) (x == 0x0d76 || x == 0x0ff6)
-#define IS_SUB2_SP(x) (x==0x1b87)
-#define IS_SUB4_SP(x) (x==0x1b97)
-#define IS_SUBL_SP(x) (x==0x7a37)
-#define IS_MOVK_R5(x) (x==0x7905)
-#define IS_SUB_R5SP(x) (x==0x1957)
-
-
-/* The register names change depending on whether the h8300h processor
-   type is selected. */
-
-static char *original_register_names[] = REGISTER_NAMES;
-
-static char *h8300h_register_names[] =
-  {"er0", "er1", "er2", "er3", "er4", "er5", "er6",
-    "sp", "ccr","pc","cycles","tick","inst" };
-
-char **h8300_register_names = original_register_names;
-
-
-/* Local function declarations.  */
-
-static CORE_ADDR examine_prologue ();
-static void set_machine_hook PARAMS ((char *filename));
-
-void h8300_frame_find_saved_regs ();
-
-CORE_ADDR 
-h8300_skip_prologue (start_pc)
-     CORE_ADDR start_pc;
-{
-  short int w;
-  int adjust = 0;
-
-  /* Skip past all push and stm insns.  */
-  while (1)
-    {
-      w = read_memory_unsigned_integer (start_pc, 2);
-      /* First look for push insns.  */
-      if (w == 0x0100 || w == 0x0110 || w == 0x0120 || w == 0x0130)
-	{
-	  w = read_memory_unsigned_integer (start_pc + 2, 2);
-	  adjust = 2;
-	}
-
-      if (IS_PUSH (w))
-	{
-	  start_pc += 2 + adjust;
-	  w = read_memory_unsigned_integer (start_pc, 2);
-	  continue;
-	}
-      adjust = 0;
-      break;
-    }
-
-  /* Skip past a move to FP, either word or long sized */
-  w = read_memory_unsigned_integer (start_pc, 2);
-  if (w == 0x0100)
-    {
-      w = read_memory_unsigned_integer (start_pc + 2, 2);
-      adjust += 2;
-    }
-
-  if (IS_MOVE_FP (w))
-    {
-      start_pc += 2 + adjust;
-      w = read_memory_unsigned_integer (start_pc, 2);
-    }
-
-  /* Check for loading either a word constant into r5;
-     long versions are handled by the SUBL_SP below.  */
-  if (IS_MOVK_R5 (w))
-    {
-      start_pc += 2;
-      w = read_memory_unsigned_integer (start_pc, 2);
-    }
-
-  /* Now check for subtracting r5 from sp, word sized only.  */
-  if (IS_SUB_R5SP (w))
-    {
-      start_pc += 2 + adjust;
-      w = read_memory_unsigned_integer (start_pc, 2);
-    }
-
-  /* Check for subs #2 and subs #4. */
-  while (IS_SUB2_SP (w) || IS_SUB4_SP (w))
-    {
-      start_pc += 2 + adjust;
-      w = read_memory_unsigned_integer (start_pc, 2);
-    }
-
-  /* Check for a 32bit subtract.  */
-  if (IS_SUBL_SP (w))
-    start_pc += 6 + adjust;
-
-  return start_pc;
-}
-
-int
-gdb_print_insn_h8300 (memaddr, info)
-     bfd_vma memaddr;
-     disassemble_info *info;
-{
-  if (h8300smode)
-    return print_insn_h8300s (memaddr, info);
-  else if (h8300hmode)
-    return print_insn_h8300h (memaddr, info);
-  else
-    return print_insn_h8300 (memaddr, info);
-}
-
-/* Given a GDB frame, determine the address of the calling function's frame.
-   This will be used to create a new GDB frame struct, and then
-   INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame.
-
-   For us, the frame address is its stack pointer value, so we look up
-   the function prologue to determine the caller's sp value, and return it.  */
-
-CORE_ADDR
-h8300_frame_chain (thisframe)
-     struct frame_info *thisframe;
-{
-  if (PC_IN_CALL_DUMMY(thisframe->pc, thisframe->frame, thisframe->frame))
-    { /* initialize the from_pc now */
-      thisframe->from_pc = generic_read_register_dummy (thisframe->pc,
-							thisframe->frame, 
-							PC_REGNUM);
-      return thisframe->frame;
-    }
-  h8300_frame_find_saved_regs (thisframe, (struct frame_saved_regs *) 0);
-  return thisframe->fsr->regs[SP_REGNUM];
-}
-
-/* Put here the code to store, into a struct frame_saved_regs,
-   the addresses of the saved registers of frame described by FRAME_INFO.
-   This includes special registers such as pc and fp saved in special
-   ways in the stack frame.  sp is even more special:
-   the address we return for it IS the sp for the next frame.
-
-   We cache the result of doing this in the frame_obstack, since it is
-   fairly expensive.  */
-
-void
-h8300_frame_find_saved_regs (fi, fsr)
-     struct frame_info *fi;
-     struct frame_saved_regs *fsr;
-{
-  register struct frame_saved_regs *cache_fsr;
-  CORE_ADDR ip;
-  struct symtab_and_line sal;
-  CORE_ADDR limit;
-
-  if (!fi->fsr)
-    {
-      cache_fsr = (struct frame_saved_regs *)
-	frame_obstack_alloc (sizeof (struct frame_saved_regs));
-      memset (cache_fsr, '\0', sizeof (struct frame_saved_regs));
-
-      fi->fsr = cache_fsr;
-
-      if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame))
-	{	/* no more to do. */
-	  if (fsr)
-	    *fsr = *fi->fsr;
-	  return;
-	}
-      /* Find the start and end of the function prologue.  If the PC
-	 is in the function prologue, we only consider the part that
-	 has executed already.  */
-
-      ip = get_pc_function_start (fi->pc);
-      sal = find_pc_line (ip, 0);
-      limit = (sal.end && sal.end < fi->pc) ? sal.end : fi->pc;
-
-      /* This will fill in fields in *fi as well as in cache_fsr.  */
-      examine_prologue (ip, limit, fi->frame, cache_fsr, fi);
-    }
-
-  if (fsr)
-    *fsr = *fi->fsr;
-}
-
-/* Fetch the instruction at ADDR, returning 0 if ADDR is beyond LIM or
-   is not the address of a valid instruction, the address of the next
-   instruction beyond ADDR otherwise.  *PWORD1 receives the first word
-   of the instruction.*/
-
-CORE_ADDR
-NEXT_PROLOGUE_INSN (addr, lim, pword1)
-     CORE_ADDR addr;
-     CORE_ADDR lim;
-     INSN_WORD *pword1;
-{
-  char buf[2];
-  if (addr < lim + 8)
-    {
-      read_memory (addr, buf, 2);
-      *pword1 = extract_signed_integer (buf, 2);
-
-      return addr + 2;
-    }
-  return 0;
-}
-
-/* Examine the prologue of a function.  `ip' points to the first instruction.
-   `limit' is the limit of the prologue (e.g. the addr of the first
-   linenumber, or perhaps the program counter if we're stepping through).
-   `frame_sp' is the stack pointer value in use in this frame.
-   `fsr' is a pointer to a frame_saved_regs structure into which we put
-   info about the registers saved by this frame.
-   `fi' is a struct frame_info pointer; we fill in various fields in it
-   to reflect the offsets of the arg pointer and the locals pointer.  */
-
-static CORE_ADDR
-examine_prologue (ip, limit, after_prolog_fp, fsr, fi)
-     register CORE_ADDR ip;
-     register CORE_ADDR limit;
-     CORE_ADDR after_prolog_fp;
-     struct frame_saved_regs *fsr;
-     struct frame_info *fi;
-{
-  register CORE_ADDR next_ip;
-  int r;
-  int have_fp = 0;
-  INSN_WORD insn_word;
-  /* Number of things pushed onto stack, starts at 2/4, 'cause the
-     PC is already there */
-  unsigned int reg_save_depth = h8300hmode ? 4 : 2;
-
-  unsigned int auto_depth = 0;	/* Number of bytes of autos */
-
-  char in_frame[11];		/* One for each reg */
-
-  int adjust = 0;
-
-  memset (in_frame, 1, 11);
-  for (r = 0; r < 8; r++)
-    {
-      fsr->regs[r] = 0;
-    }
-  if (after_prolog_fp == 0)
-    {
-      after_prolog_fp = read_register (SP_REGNUM);
-    }
-
-  /* If the PC isn't valid, quit now.  */
-  if (ip == 0 || ip & (h8300hmode ? ~0xffffff : ~0xffff))
-    return 0;
-
-  next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
-
-  if (insn_word == 0x0100)
-    {
-      insn_word = read_memory_unsigned_integer (ip + 2, 2);
-      adjust = 2;
-    }
-
-  /* Skip over any fp push instructions */
-  fsr->regs[6] = after_prolog_fp;
-  while (next_ip && IS_PUSH_FP (insn_word))
-    {
-      ip = next_ip + adjust;
-
-      in_frame[insn_word & 0x7] = reg_save_depth;
-      next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
-      reg_save_depth += 2 + adjust;
-    }
-
-  /* Is this a move into the fp */
-  if (next_ip && IS_MOV_SP_FP (insn_word))
-    {
-      ip = next_ip;
-      next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
-      have_fp = 1;
-    }
-
-  /* Skip over any stack adjustment, happens either with a number of
-     sub#2,sp or a mov #x,r5 sub r5,sp */
-
-  if (next_ip && (IS_SUB2_SP (insn_word) || IS_SUB4_SP (insn_word)))
-    {
-      while (next_ip && (IS_SUB2_SP (insn_word) || IS_SUB4_SP (insn_word)))
-	{
-	  auto_depth += IS_SUB2_SP (insn_word) ? 2 : 4;
-	  ip = next_ip;
-	  next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
-	}
-    }
-  else
-    {
-      if (next_ip && IS_MOVK_R5 (insn_word))
-	{
-	  ip = next_ip;
-	  next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
-	  auto_depth += insn_word;
-
-	  next_ip = NEXT_PROLOGUE_INSN (next_ip, limit, &insn_word);
-	  auto_depth += insn_word;
-	}
-      if (next_ip && IS_SUBL_SP (insn_word))
-	{
-	  ip = next_ip;
-	  auto_depth += read_memory_unsigned_integer (ip, 4);
-	  ip += 4;
-
-	  next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
-	}
-    }
-
-  /* Now examine the push insns to determine where everything lives
-     on the stack.  */
-  while (1)
-    {
-      adjust = 0;
-      if (!next_ip)
-	break;
-
-      if (insn_word == 0x0100)
-	{
-	  ip = next_ip;
-	  next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
-	  adjust = 2;
-	}
-
-      if (IS_PUSH (insn_word))
-	{
-	  ip = next_ip;
-	  next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
-	  fsr->regs[r] = after_prolog_fp + auto_depth;
-	  auto_depth += 2 + adjust;
-	  continue;
-	}
-
-      /* Now check for push multiple insns.  */
-      if (insn_word == 0x0110 || insn_word == 0x0120 || insn_word == 0x0130)
-	{
-	  int count = ((insn_word >> 4) & 0xf) + 1;
-	  int start, i;
-
-	  ip = next_ip;
-	  next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
-	  start = insn_word & 0x7;
-
-	  for (i = start; i <= start + count; i++)
-	    {
-	      fsr->regs[i] = after_prolog_fp + auto_depth;
-	      auto_depth += 4;
-	    }
-	}
-      break;
-    }
-
-  /* The args are always reffed based from the stack pointer */
-  fi->args_pointer = after_prolog_fp;
-  /* Locals are always reffed based from the fp */
-  fi->locals_pointer = after_prolog_fp;
-  /* The PC is at a known place */
-  fi->from_pc = read_memory_unsigned_integer (after_prolog_fp + BINWORD, BINWORD);
-
-  /* Rememeber any others too */
-  in_frame[PC_REGNUM] = 0;
-  
-  if (have_fp)
-    /* We keep the old FP in the SP spot */
-    fsr->regs[SP_REGNUM] = read_memory_unsigned_integer (fsr->regs[6], BINWORD);
-  else
-    fsr->regs[SP_REGNUM] = after_prolog_fp + auto_depth;
-
-  return (ip);
-}
-
-void
-h8300_init_extra_frame_info (fromleaf, fi)
-     int fromleaf;
-     struct frame_info *fi;
-{
-  fi->fsr = 0;			/* Not yet allocated */
-  fi->args_pointer = 0;		/* Unknown */
-  fi->locals_pointer = 0;	/* Unknown */
-  fi->from_pc = 0;
-  if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame))
-    { /* anything special to do? */
-      return;
-    }
-}
-
-/* Return the saved PC from this frame.
-
-   If the frame has a memory copy of SRP_REGNUM, use that.  If not,
-   just use the register SRP_REGNUM itself.  */
-
-CORE_ADDR
-h8300_frame_saved_pc (frame)
-     struct frame_info *frame;
-{
-  if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame))
-    return generic_read_register_dummy (frame->pc, frame->frame, PC_REGNUM);
-  else
-    return frame->from_pc;
-}
-
-CORE_ADDR
-frame_locals_address (fi)
-     struct frame_info *fi;
-{
-  if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame))
-    return (CORE_ADDR) 0;	/* Not sure what else to do... */
-  if (!fi->locals_pointer)
-    {
-      struct frame_saved_regs ignore;
-
-      get_frame_saved_regs (fi, &ignore);
-
-    }
-  return fi->locals_pointer;
-}
-
-/* Return the address of the argument block for the frame
-   described by FI.  Returns 0 if the address is unknown.  */
-
-CORE_ADDR
-frame_args_address (fi)
-     struct frame_info *fi;
-{
-  if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame))
-    return (CORE_ADDR) 0;	/* Not sure what else to do... */
-  if (!fi->args_pointer)
-    {
-      struct frame_saved_regs ignore;
-
-      get_frame_saved_regs (fi, &ignore);
-
-    }
-
-  return fi->args_pointer;
-}
-
-/* Function: push_arguments
-   Setup the function arguments for calling a function in the inferior.
-
-   On the Hitachi H8/300 architecture, there are three registers (R0 to R2)
-   which are dedicated for passing function arguments.  Up to the first
-   three arguments (depending on size) may go into these registers.
-   The rest go on the stack.
-
-   Arguments that are smaller than WORDSIZE bytes will still take up a
-   whole register or a whole WORDSIZE word on the stack, and will be
-   right-justified in the register or the stack word.  This includes
-   chars and small aggregate types.  Note that WORDSIZE depends on the 
-   cpu type.
-
-   Arguments that are larger than WORDSIZE bytes will be split between
-   two or more registers as available, but will NOT be split between a
-   register and the stack.
-
-   An exceptional case exists for struct arguments (and possibly other
-   aggregates such as arrays) -- if the size is larger than WORDSIZE
-   bytes but not a multiple of WORDSIZE bytes.  In this case the
-   argument is never split between the registers and the stack, but
-   instead is copied in its entirety onto the stack, AND also copied
-   into as many registers as there is room for.  In other words, space
-   in registers permitting, two copies of the same argument are passed
-   in.  As far as I can tell, only the one on the stack is used,
-   although that may be a function of the level of compiler
-   optimization.  I suspect this is a compiler bug.  Arguments of
-   these odd sizes are left-justified within the word (as opposed to
-   arguments smaller than WORDSIZE bytes, which are right-justified).
- 
-   If the function is to return an aggregate type such as a struct,
-   the caller must allocate space into which the callee will copy the
-   return value.  In this case, a pointer to the return value location
-   is passed into the callee in register R0, which displaces one of
-   the other arguments passed in via registers R0 to R2.  */
-
-CORE_ADDR
-h8300_push_arguments(nargs, args, sp, struct_return, struct_addr)
-     int nargs;
-     struct value **args;
-     CORE_ADDR sp;
-     unsigned char struct_return;
-     CORE_ADDR struct_addr;
-{
-  int stack_align, stack_alloc, stack_offset;
-  int wordsize;
-  int argreg;
-  int argnum;
-  struct type *type;
-  CORE_ADDR regval;
-  char *val;
-  char valbuf[4];
-  int len;
-
-  if (h8300hmode || h8300smode)
-    {
-      stack_align = 3;
-      wordsize    = 4;
-    }
-  else
-    {
-      stack_align = 1;
-      wordsize    = 2;
-    }
-
-  /* first force sp to a n-byte alignment */
-  sp = sp & ~stack_align;
-
-  /* Now make sure there's space on the stack */
-  for (argnum = 0, stack_alloc = 0; 
-       argnum < nargs; argnum++)
-    stack_alloc += ((TYPE_LENGTH(VALUE_TYPE(args[argnum])) + stack_align) 
-		    & ~stack_align);
-  sp -= stack_alloc;	/* make room on stack for args */
-  /* we may over-allocate a little here, but that won't hurt anything */
-
-  argreg = ARG0_REGNUM; 
-  if (struct_return)	/* "struct return" pointer takes up one argreg */
-    {
-      write_register (argreg++, struct_addr);
-    }
-
-  /* Now load as many as possible of the first arguments into
-     registers, and push the rest onto the stack.  There are 3N bytes
-     in three registers available.  Loop thru args from first to last.  */
-
-  for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++)
-    {
-      type = VALUE_TYPE (args[argnum]);
-      len = TYPE_LENGTH (type);
-      memset(valbuf, 0, sizeof(valbuf));
-      if (len < wordsize)
-	{
-	  /* the purpose of this is to right-justify the value within the word */
-	  memcpy(valbuf + (wordsize - len), 
-		 (char *) VALUE_CONTENTS (args[argnum]), len);
-	  val = valbuf;
-	}
-      else
-	val = (char *) VALUE_CONTENTS (args[argnum]);
-
-      if (len > (ARGLAST_REGNUM+1 - argreg) * REGISTER_RAW_SIZE(ARG0_REGNUM) ||
-	 (len > wordsize && (len & stack_align) != 0))
-	{ /* passed on the stack */
-	  write_memory (sp + stack_offset, val, 
-			len < wordsize ? wordsize : len);
-	  stack_offset += (len + stack_align) & ~stack_align;
-	}
-      /* NOTE WELL!!!!!  This is not an "else if" clause!!!
-	 That's because some *&^%$ things get passed on the stack
-	 AND in the registers!   */
-      if (len <= (ARGLAST_REGNUM+1 - argreg) * REGISTER_RAW_SIZE(ARG0_REGNUM))
-	while (len > 0)
-	  { /* there's room in registers */
-	    regval = extract_address (val, wordsize);
-	    write_register (argreg, regval);
-	    len -= wordsize;
-	    val += wordsize;
-	    argreg++;
-	  }
-    }
-  return sp;
-}
-
-/* Function: push_return_address
-   Setup the return address for a dummy frame, as called by
-   call_function_by_hand.  Only necessary when you are using an
-   empty CALL_DUMMY, ie. the target will not actually be executing
-   a JSR/BSR instruction.  */
-
-CORE_ADDR
-h8300_push_return_address (pc, sp)
-     CORE_ADDR pc;
-     CORE_ADDR sp;
-{
-  unsigned char buf[4];
-  int wordsize;
-
-  if (h8300hmode || h8300smode)
-    wordsize = 4;
-  else
-    wordsize = 2;
-
-  sp -= wordsize;
-  store_unsigned_integer (buf, wordsize, CALL_DUMMY_ADDRESS ());
-  write_memory (sp, buf, wordsize);
-  return sp;
-}
-
-/* Function: pop_frame
-   Restore the machine to the state it had before the current frame 
-   was created.  Usually used either by the "RETURN" command, or by
-   call_function_by_hand after the dummy_frame is finished. */
-
-void 
-h8300_pop_frame ()
-{
-  unsigned regnum;
-  struct frame_saved_regs fsr;
-  struct frame_info *frame = get_current_frame ();
-
-  if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame))
-    {
-      generic_pop_dummy_frame();
-    }
-  else
-    {
-      get_frame_saved_regs (frame, &fsr);
-
-      for (regnum = 0; regnum < 8; regnum++)
-	{
-	  /* Don't forget SP_REGNUM is a frame_saved_regs struct is the
-	     actual value we want, not the address of the value we want.  */
-	  if (fsr.regs[regnum] && regnum != SP_REGNUM)
-	    write_register (regnum, 
-			    read_memory_integer(fsr.regs[regnum], BINWORD));
-	  else if (fsr.regs[regnum] && regnum == SP_REGNUM)
-	    write_register (regnum, frame->frame + 2 * BINWORD);
-	}
-
-      /* Don't forget the update the PC too!  */
-      write_pc (frame->from_pc);
-    }
-  flush_cached_frames ();
-}
-
-/* Function: extract_return_value
-   Figure out where in REGBUF the called function has left its return value.
-   Copy that into VALBUF.  Be sure to account for CPU type.   */
-
-void
-h8300_extract_return_value (type, regbuf, valbuf)
-     struct type *type;
-     char *regbuf;
-     char *valbuf;
-{
-  int wordsize, len;
-
-  if (h8300smode || h8300hmode)
-    wordsize = 4;
-  else
-    wordsize = 2;
-
-  len = TYPE_LENGTH(type);
-
-  switch (len) {
-  case 1:	/* (char) */
-  case 2:	/* (short), (int) */
-    memcpy (valbuf,   regbuf + REGISTER_BYTE(0) + (wordsize - len), len);
-    break;
-  case 4:	/* (long), (float) */
-    if (h8300smode || h8300hmode)
-      {
-	memcpy (valbuf,   regbuf + REGISTER_BYTE(0), 4);
-      }
-    else
-      {
-	memcpy (valbuf,   regbuf + REGISTER_BYTE(0), 2);
-	memcpy (valbuf+2, regbuf + REGISTER_BYTE(1), 2);
-      }
-    break;
-  case 8:	/* (double) (doesn't seem to happen, which is good,
-		   because this almost certainly isn't right.  */
-    error ("I don't know how a double is returned.");
-    break;
-  }
-}
-
-/* Function: store_return_value
-   Place the appropriate value in the appropriate registers.
-   Primarily used by the RETURN command.  */
-
-void 
-h8300_store_return_value (type, valbuf)
-     struct type *type;
-     char *valbuf;
-{
-  int wordsize, len, regval;
-  
-  if (h8300hmode || h8300smode)
-    wordsize = 4;
-  else
-    wordsize = 2;
-
-  len = TYPE_LENGTH(type);
-  switch (len) {
-  case 1:	/* char */
-  case 2:	/* short, int */
-    regval = extract_address(valbuf, len);
-    write_register (0, regval);
-    break;
-  case 4:	/* long, float */
-    regval = extract_address(valbuf, len);
-    if (h8300smode || h8300hmode)
-      {
-	write_register (0, regval);
-      }
-    else
-      {
-	write_register (0, regval >> 16);
-	write_register (1, regval & 0xffff);
-      }
-    break;
-  case 8:	/* presumeably double, but doesn't seem to happen */
-    error ("I don't know how to return a double.");
-    break;
-  }
-}
-
-/* Function: get_saved_register
-   Just call the generic_get_saved_register function.  */
-
-void
-get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
-     char *raw_buffer;
-     int *optimized;
-     CORE_ADDR *addrp;
-     struct frame_info *frame;
-     int regnum;
-     enum lval_type *lval;
-{
-  generic_get_saved_register (raw_buffer, optimized, addrp, 
-			      frame, regnum, lval);
-}
-
-struct cmd_list_element *setmemorylist;
-
-static void
-set_register_names ()
-{
-  if (h8300hmode != 0)
-    h8300_register_names = h8300h_register_names;
-  else
-    h8300_register_names = original_register_names;
-}
-
-static void
-h8300_command(args, from_tty)
-{
-  extern int h8300hmode;
-  h8300hmode = 0;
-  h8300smode = 0;
-  set_register_names ();
-}
-
-static void
-h8300h_command(args, from_tty)
-{
-  extern int h8300hmode;
-  h8300hmode = 1;
-  h8300smode = 0;
-  set_register_names ();
-}
-
-static void
-h8300s_command(args, from_tty)
-{
-  extern int h8300smode;
-  extern int h8300hmode;
-  h8300smode = 1;
-  h8300hmode = 1;
-  set_register_names ();
-}
-
-
-static void 
-set_machine (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  printf_unfiltered ("\"set machine\" must be followed by h8300, h8300h");
-  printf_unfiltered ("or h8300s");
-  help_list (setmemorylist, "set memory ", -1, gdb_stdout);
-}
-
-/* set_machine_hook is called as the exec file is being opened, but
-   before the symbol file is opened.  This allows us to set the
-   h8300hmode flag based on the machine type specified in the exec
-   file.  This in turn will cause subsequently defined pointer types
-   to be 16 or 32 bits as appropriate for the machine.  */
-
-static void
-set_machine_hook (filename)
-     char *filename;
-{
-  if (bfd_get_mach (exec_bfd) == bfd_mach_h8300s)
-    {
-      h8300smode = 1;
-      h8300hmode = 1;
-    }
-  else 
-    if (bfd_get_mach (exec_bfd) == bfd_mach_h8300h)
-    {
-      h8300smode = 0;
-      h8300hmode = 1;
-    }
-  else
-    {
-      h8300smode = 0;
-      h8300hmode = 0;
-    }
-  set_register_names ();
-}
-
-void
-_initialize_h8300m ()
-{
-  add_prefix_cmd ("machine", no_class, set_machine,
-		  "set the machine type", 
-		  &setmemorylist, "set machine ", 0,
-		  &setlist);
-
-  add_cmd ("h8300", class_support, h8300_command,
-	   "Set machine to be H8/300.", &setmemorylist);
-
-  add_cmd ("h8300h", class_support, h8300h_command,
-	   "Set machine to be H8/300H.", &setmemorylist);
-
-  add_cmd ("h8300s", class_support, h8300s_command,
-	   "Set machine to be H8/300S.", &setmemorylist);
-
-  /* Add a hook to set the machine type when we're loading a file. */
-
-  specify_exec_file_hook(set_machine_hook);
-}
-
-
-
-void
-print_register_hook (regno)
-{
-  if (regno == 8)
-    {
-      /* CCR register */
-      int C, Z, N, V;
-      unsigned char b[4];
-      unsigned char l;
-      read_relative_register_raw_bytes (regno, b);
-      l = b[REGISTER_VIRTUAL_SIZE(8) -1];
-      printf_unfiltered ("\t");
-      printf_unfiltered ("I-%d - ", (l & 0x80) != 0);
-      printf_unfiltered ("H-%d - ", (l & 0x20) != 0);
-      N = (l & 0x8) != 0;
-      Z = (l & 0x4) != 0;
-      V = (l & 0x2) != 0;
-      C = (l & 0x1) != 0;
-      printf_unfiltered ("N-%d ", N);
-      printf_unfiltered ("Z-%d ", Z);
-      printf_unfiltered ("V-%d ", V);
-      printf_unfiltered ("C-%d ", C);
-      if ((C | Z) == 0)
-	printf_unfiltered ("u> ");
-      if ((C | Z) == 1)
-	printf_unfiltered ("u<= ");
-      if ((C == 0))
-	printf_unfiltered ("u>= ");
-      if (C == 1)
-	printf_unfiltered ("u< ");
-      if (Z == 0)
-	printf_unfiltered ("!= ");
-      if (Z == 1)
-	printf_unfiltered ("== ");
-      if ((N ^ V) == 0)
-	printf_unfiltered (">= ");
-      if ((N ^ V) == 1)
-	printf_unfiltered ("< ");
-      if ((Z | (N ^ V)) == 0)
-	printf_unfiltered ("> ");
-      if ((Z | (N ^ V)) == 1)
-	printf_unfiltered ("<= ");
-    }
-}
-
-void
-_initialize_h8300_tdep ()
-{
-  tm_print_insn = gdb_print_insn_h8300;
-}