From 9f744f9110550f470cccc05a0d1fef9736617e88 Mon Sep 17 00:00:00 2001
From: Steve Chamberlain <sac@cygnus>
Date: Mon, 16 Jan 1995 00:35:55 +0000
Subject: 	* configure.in: Add W65 support. 	* disassemble.c:
 Likewise. 	* w65-opc.h, w65-dis.c: New files.

---
 opcodes/w65-dis.c | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 opcodes/w65-dis.c

(limited to 'opcodes/w65-dis.c')

diff --git a/opcodes/w65-dis.c b/opcodes/w65-dis.c
new file mode 100644
index 0000000..02c6d19
--- /dev/null
+++ b/opcodes/w65-dis.c
@@ -0,0 +1,118 @@
+/* Disassemble WDC 65816 instructions.
+   Copyright (C) 1995 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., 675 Mass Ave, Cambridge, MA 02139, 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;
+  char *name;
+  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;
+  }
+
+}
-- 
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