Initial revision

1 files changed, 457 insertions, 0 deletions

diff --git a/opcodes/h8300-dis.c b/opcodes/h8300-dis.c
new file mode 100644
index 00000000000..57753a98d54
--- /dev/null
+++ b/opcodes/h8300-dis.c
@@ -0,0 +1,457 @@
+/* Disassemble h8300 instructions.
+   Copyright (C) 1993, 1998 Free Software Foundation, Inc.
+
+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.  */
+
+#define DEFINE_TABLE
+
+#define h8_opcodes h8ops
+#include "opcode/h8300.h"
+#include "dis-asm.h"
+#include "opintl.h"
+
+
+/* Run through the opcodes and sort them into order to make them easy
+   to disassemble
+ */
+static void
+bfd_h8_disassemble_init ()
+{
+  unsigned int i;
+
+
+  struct h8_opcode *p;
+
+  for (p = h8_opcodes; p->name; p++)
+    {
+      int n1 = 0;
+      int n2 = 0;
+
+      if ((int) p->data.nib[0] < 16)
+	{
+	  n1 = (int) p->data.nib[0];
+	}
+      else
+	n1 = 0;
+      if ((int) p->data.nib[1] < 16)
+	{
+	  n2 = (int) p->data.nib[1];
+	}
+      else
+	n2 = 0;
+
+      /* Just make sure there are an even number of nibbles in it, and
+	 that the count is the same s the length */
+      for (i = 0; p->data.nib[i] != E; i++)
+	/*EMPTY*/ ;
+      if (i & 1)
+	abort ();
+      p->length = i / 2;
+    }
+
+}
+
+
+unsigned int
+bfd_h8_disassemble (addr, info, mode)
+     bfd_vma addr;
+     disassemble_info *info;
+     int mode;
+{
+  /* Find the first entry in the table for this opcode */
+  static CONST char *regnames[] =
+    {
+      "r0h", "r1h", "r2h", "r3h", "r4h", "r5h", "r6h", "r7h",
+      "r0l", "r1l", "r2l", "r3l", "r4l", "r5l", "r6l", "r7l"};
+  
+  static CONST char *wregnames[] =
+    {
+      "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+      "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7"
+      };
+  
+  static CONST char *lregnames[] =
+    {
+      "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7",
+      "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7"
+      }
+  ;
+
+  int rs = 0;
+  int rd = 0;
+  int rdisp = 0;
+  int abs = 0;
+  int bit = 0;
+  int plen = 0;
+  static boolean init = 0;
+  struct h8_opcode *q = h8_opcodes;
+  char CONST **pregnames = mode != 0 ? lregnames : wregnames;
+  int status;
+  int l;
+  
+  unsigned char data[20];  
+  void *stream = info->stream;
+  fprintf_ftype fprintf = info->fprintf_func;
+
+  if (!init)
+    {
+      bfd_h8_disassemble_init ();
+      init = 1;
+    }
+
+  status = info->read_memory_func(addr, data, 2, info);
+  if (status != 0) 
+    {
+      info->memory_error_func(status, addr, info);
+      return -1;
+    }
+  for (l = 2; status == 0 && l < 10; l+=2)
+    {
+      status = info->read_memory_func(addr+l, data+l, 2, info);
+    }
+  
+  
+
+  /* Find the exact opcode/arg combo */
+  while (q->name)
+    {
+      op_type *nib;
+      unsigned int len = 0;
+
+      nib = q->data.nib;
+      
+      while (1)
+	{
+	  op_type looking_for = *nib;
+	  int thisnib = data[len >> 1];
+	  
+	  thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib >> 4) & 0xf);
+	  
+	  if (looking_for < 16 && looking_for >=0) 
+	    {
+	      
+	      if (looking_for != thisnib) 
+		goto fail;
+	    }
+	  
+	  else 
+	    {
+	      
+	      if ((int) looking_for & (int) B31)
+		{
+		  if (! (((int) thisnib & 0x8) != 0)) 
+		    goto fail;
+		  looking_for = (op_type) ((int) looking_for & ~(int) B31);
+		}
+	      if ((int) looking_for & (int) B30)
+		{
+		  if (!(((int) thisnib & 0x8) == 0)) 
+		    goto fail;
+		  looking_for = (op_type) ((int) looking_for & ~(int) B30);
+		}
+
+	      if (looking_for & DBIT)
+		{
+		  if ((looking_for & 5) != (thisnib &5)) goto fail;
+		  abs = (thisnib & 0x8) ? 2 : 1;
+		}		  
+	      
+	      else  if (looking_for & (REG | IND|INC|DEC))
+		{
+		  if (looking_for & SRC)
+		    {
+		      rs = thisnib;
+		    }
+		  else
+		    {
+		      rd = thisnib;
+		    }
+		}
+	      else if (looking_for & L_16)
+		{
+		  abs = (data[len >> 1]) * 256 + data[(len + 2) >> 1];
+		  plen = 16;
+	      
+		}
+	      else if(looking_for & ABSJMP)
+		{
+		  abs =
+		    (data[1] << 16)
+		      | (data[2] << 8)
+			| (data[3]);
+		}
+	      else if(looking_for & MEMIND)
+		{
+		  abs = data[1];
+		}
+	      else if (looking_for & L_32)
+		{
+		  int i = len >> 1;
+		  abs = (data[i] << 24)
+		    | (data[i + 1] << 16)
+		      | (data[i + 2] << 8)
+			| (data[i+ 3]);
+
+		  plen =32;
+	      
+		}
+	      else if (looking_for & L_24)
+		{
+		  int i = len >> 1;
+		  abs = (data[i] << 16) | (data[i + 1] << 8)|  (data[i+2]);
+		  plen =24;
+		}
+	      else if (looking_for & IGNORE)
+		{
+		  
+		}
+	      else if (looking_for & DISPREG)
+		{
+		  rdisp = thisnib;
+		}
+	      else if (looking_for & KBIT)
+		{
+		  switch (thisnib) 
+		    {
+		    case 9:
+		      abs = 4;
+		      break;
+		    case 8:
+		      abs = 2;
+		      break;
+		    case 0:
+		      abs = 1;
+		      break;
+		    default:
+		      goto fail;
+		    }
+		}
+	      else if (looking_for & L_8)
+		{
+		  plen = 8;		  
+		  abs = data[len >> 1];
+		}
+	      else if (looking_for & L_3)
+		{
+		  bit = thisnib & 0x7;
+		}
+	      else if (looking_for & L_2)
+		{
+		  plen = 2;
+		  abs = thisnib & 0x3;
+		}
+	      else if (looking_for & MACREG)
+		{
+		  abs = (thisnib == 3);
+		}
+	      else if (looking_for == E)
+		{
+
+		  {
+		    int i;
+
+		    for (i = 0; i < q->length; i++)
+		      {
+			fprintf (stream, "%02x ", data[i]);
+		      }
+		    for (; i < 6; i++)
+		      {
+			fprintf (stream, "   ");
+		      }
+		  }
+		  fprintf (stream, "%s\t", q->name);
+
+		  /* Gross.  Disgusting.  */
+		  if (strcmp (q->name, "ldm.l") == 0)
+		    {
+		      int count, high;
+
+		      count = (data[1] >> 4) & 0x3;
+		      high = data[3] & 0x7;
+
+		      fprintf (stream, "@sp+,er%d-er%d", high - count, high);
+		      return q->length;
+		    }
+
+		  if (strcmp (q->name, "stm.l") == 0)
+		    {
+		      int count, low;
+
+		      count = (data[1] >> 4) & 0x3;
+		      low = data[3] & 0x7;
+
+		      fprintf (stream, "er%d-er%d,@-sp", low, low + count);
+		      return q->length;
+		    }
+
+		  /* Fill in the args */
+		  {
+		    op_type *args = q->args.nib;
+		    int hadone = 0;
+
+
+		    while (*args != E)
+		      {
+			int x = *args;
+			if (hadone)
+			  fprintf (stream, ",");
+
+
+			if (x & L_3)
+			  {
+			    fprintf (stream, "#0x%x", (unsigned) bit);
+			  }
+			else if (x & (IMM|KBIT|DBIT))
+			  {
+			    /* Bletch.  For shal #2,er0 and friends.  */
+			    if (*(args+1) & SRC_IN_DST)
+			      abs = 2;
+
+			    fprintf (stream, "#0x%x", (unsigned) abs);
+			  }
+			else if (x & REG)
+			  {
+			    int rn = (x & DST) ? rd : rs;
+			    switch (x & SIZE)
+			      {
+			      case L_8:
+				fprintf (stream, "%s", regnames[rn]);
+				break;
+			      case L_16:
+				fprintf (stream, "%s", wregnames[rn]);
+				break;
+			      case L_P:
+			      case L_32:
+				fprintf (stream, "%s", lregnames[rn]);
+				break;
+		    
+			      }
+			  }
+			else if (x & MACREG)
+			  {
+			    fprintf (stream, "mac%c", abs ? 'l' : 'h');
+			  }
+			else if (x & INC)
+			  {
+			    fprintf (stream, "@%s+", pregnames[rs]);
+			  }
+			else if (x & DEC)
+			  {
+			    fprintf (stream, "@-%s", pregnames[rd]);
+			  }
+
+			else if (x & IND)
+			  {
+			    int rn = (x & DST) ? rd : rs;
+			    fprintf (stream, "@%s", pregnames[rn]);
+			  }
+
+			else if (x & ABS8MEM)
+			  {
+			    fprintf (stream, "@0x%x:8", (unsigned) abs);
+			  }
+
+			else if (x & (ABS|ABSJMP))
+			  {
+			    fprintf (stream, "@0x%x:%d", (unsigned) abs, plen);
+			  }
+
+			else if (x & MEMIND)
+			  {
+			    fprintf (stream, "@@%d (%x)", abs, abs);
+			  }
+
+			else if (x & PCREL)
+			  {
+			    if (x & L_16) 
+			      {
+				abs  +=2;
+				fprintf (stream, ".%s%d (%x)", (short) abs > 0 ? "+" : "", (short) abs,
+					 addr + (short) abs + 2);
+			      }
+			    else {
+			      fprintf (stream, ".%s%d (%x)", (char) abs > 0 ? "+" : "", (char) abs,
+				       addr + (char) abs + 2);
+			    }
+			  }
+			else if (x & DISP)
+			  {
+			    fprintf (stream, "@(0x%x:%d,%s)", abs,plen, pregnames[rdisp]);
+			  }
+
+			else if (x & CCR)
+			  {
+			    fprintf (stream, "ccr");
+			  }
+			else if (x & EXR)
+			  {
+			    fprintf (stream, "exr");
+			  }
+			else
+			  /* xgettext:c-format */
+			  fprintf (stream, _("Hmmmm %x"), x);
+			hadone = 1;
+			args++;
+		      }
+		  }
+		  return q->length;
+		}
+
+      
+	      else
+		{
+		  /* xgettext:c-format */
+		  fprintf (stream, _("Don't understand %x \n"), looking_for);
+		}
+	    }
+	  
+	  len++;
+	  nib++;
+	}
+      
+    fail:
+      q++;
+    }
+
+  /* Fell of the end */
+  fprintf (stream, "%02x %02x        .word\tH'%x,H'%x",
+	   data[0], data[1],
+	   data[0], data[1]);
+  return 2;
+}
+
+int 
+print_insn_h8300 (addr, info)
+bfd_vma addr; 
+disassemble_info *info;
+{
+  return bfd_h8_disassemble (addr, info , 0);
+}
+
+int 
+print_insn_h8300h (addr, info)
+bfd_vma addr;
+disassemble_info *info;
+{
+  return bfd_h8_disassemble (addr, info , 1);
+}
+
+int 
+print_insn_h8300s (addr, info)
+bfd_vma addr;
+disassemble_info *info;
+{
+  return bfd_h8_disassemble (addr, info , 2);
+}