Initial revision

1 files changed, 118 insertions, 0 deletions

diff --git a/opcodes/w65-dis.c b/opcodes/w65-dis.c
new file mode 100644
index 0000000000..a12e896de6
--- /dev/null
+++ b/opcodes/w65-dis.c
@@ -0,0 +1,118 @@
+/* Disassemble WDC 65816 instructions.
+   Copyright (C) 1995, 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.  */
+
+#include <stdio.h>
+#define STATIC_TABLE
+#define DEFINE_TABLE
+
+#include "w65-opc.h"
+#include "dis-asm.h"
+
+static   fprintf_ftype fpr;
+static   void *stream;
+static   struct disassemble_info *local_info;
+#if 0
+static char *lname[] =  {"r0","r1","r2","r3","r4","r5","r6","r7","s0"};
+
+static char *findname (val)
+     unsigned int val;
+{
+  if (val >= 0x10 && val <= 0x20)
+    return lname[(val - 0x10) / 2];
+  return 0;
+}
+#endif
+static void
+print_operand (lookup, format, args)
+     int lookup;
+     char *format;
+     unsigned     int *args;
+{
+  int val;
+  int c;
+
+  while (*format)
+    {
+      switch ( c = *format++) 
+	{
+	case '$':
+	  val = args[(*format++) - '0'];
+	  if (lookup) 
+	    {
+#if 0
+	      name = findname(val);
+	      if (name)
+		fpr(stream, "%s", name);
+	      else
+#endif
+		local_info->print_address_func (val, local_info);  
+	    }
+	  else
+	    fpr (stream, "0x%x", val);
+
+	  break;
+	default:
+	  fpr(stream,"%c", c);
+	  break;
+	}
+    }
+}
+int 
+print_insn_w65(memaddr, info)
+     bfd_vma memaddr;
+     struct disassemble_info *info;
+{
+
+
+  int status = 0;
+  unsigned char insn[4];
+  register struct opinfo *op;
+  int i;
+  int X =0;
+  int M = 0;
+  int args[2];
+stream = info->stream;
+  fpr = info->fprintf_func;
+local_info =    info;
+  for (i = 0; i <4 && status == 0; i++) 
+    {
+    status = info->read_memory_func(memaddr+i, insn + i, 1, info);
+  }
+
+
+  for (op = optable; op->val != insn[0]; op++) 
+    ;
+
+  fpr(stream,"%s", op->name);
+  
+  /* Prepare all the posible operand values */
+  {
+    int size = 1;
+    int asR_W65_ABS8 = insn[1];
+    int asR_W65_ABS16 = (insn[2] << 8) + asR_W65_ABS8;
+    int asR_W65_ABS24 = (insn[3] << 16) + asR_W65_ABS16;
+    int asR_W65_PCR8 = ((char)(asR_W65_ABS8)) + memaddr + 2;
+    int asR_W65_PCR16 = ((short)(asR_W65_ABS16)) + memaddr + 3;
+
+    switch (op->amode) {
+      DISASM();
+    }
+
+  return size;
+  }
+
+}