Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 2011 insertions, 0 deletions

diff --git a/sim/z8k/writecode.c b/sim/z8k/writecode.c
new file mode 100644
index 0000000..8b4c868
--- /dev/null
+++ b/sim/z8k/writecode.c
@@ -0,0 +1,2011 @@
+
+/* generate instructions for Z8KSIM
+   Copyright (C) 1992, 1993 Free Software Foundation, Inc.
+
+This file is part of Z8KSIM
+
+Z8KSIM 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.
+
+Z8KSIM 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 Z8KZIM; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* This program generates the code which emulates each of the z8k
+   instructions
+
+   code goes into three files, tc-gen1.h, tc-gen2.h and tc-gen3.h.
+   which file being made depends upon the options
+
+   -1  tc-gen1.h contains the fully expanded code for some selected
+       opcodes, (those in the quick.c list)
+
+   -2   tc-gen2.h contains a list of pointers to functions, one for each
+   opcode.  It points to functions in tc-gen3.h and tc-gen1.h
+   depending upon quick.c
+
+   -3   tc-gen3.h contains all the opcodes in unexpanded form.
+
+   -b3   tc-genb3.h same as -3 but for long pointers
+
+   -m  regenerates list.c, which is an inverted list of opcodes to
+       pointers into the z8k dissassemble opcode table, it's just there
+       to makes things faster.
+   */
+
+/* steve chamberlain
+   sac@cygnus.com */
+
+#include "config.h"
+
+#include <ansidecl.h>
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+
+#define NICENAMES
+
+#define DEFINE_TABLE
+#include "../opcodes/z8k-opc.h"
+
+#define NOPS 500
+
+#define DIRTY_HACK 0 /* Enable if your gcc can't cope with huge tables */
+extern short z8k_inv_list[];
+struct opcode_value
+{
+  int n;
+  struct opcode_value *next;
+};
+
+#define NICENAMES
+int BIG;
+
+static char *reg_names[] =
+{"bad", "src", "dst", "aux_a", "aux_b", "aux_r", "aux_x"};
+
+#define IS_DST(x) ((x & 0xf) == 2)
+#define IS_SRC(x) ((x & 0xf)==1)
+#define SIZE_ADDRESS (BIG ? 8 : 4)	/* number of nibbles in a ptr*/
+
+static int file;
+static int makelist;
+
+static int nibs = 0;
+
+static char *current_size;
+static char *current_name;
+static char current_word0[40];
+static char current_byte0[40];
+static char current_byte1[40];
+static int indent;
+static char *p;
+static char *d;
+
+struct opcode_value *list[NOPS];
+
+static opcode_entry_type *
+lookup_inst (what)
+     int what;
+{
+  if (makelist)
+    {
+
+      int nibl_index;
+      int nibl_matched;
+      unsigned short instr_nibl;
+      unsigned short tabl_datum, datum_class, datum_value;
+      char instr_nibbles[8];
+
+      opcode_entry_type *ptr = z8k_table;
+
+      nibl_matched = 0;
+
+      instr_nibbles[3] = (what >> 0) & 0xf;
+      instr_nibbles[2] = (what >> 4) & 0xf;
+      instr_nibbles[1] = (what >> 8) & 0xf;
+      instr_nibbles[0] = (what >> 12) & 0xf;
+
+      while (ptr->name)
+	{
+	  nibl_matched = 1;
+	  for (nibl_index = 0; nibl_index < 4 && nibl_matched; nibl_index++)
+	    {
+	      instr_nibl = instr_nibbles[nibl_index];
+
+	      tabl_datum = ptr->byte_info[nibl_index];
+	      datum_class = tabl_datum & CLASS_MASK;
+	      datum_value = ~CLASS_MASK & tabl_datum;
+
+	      switch (datum_class)
+		{
+		case CLASS_BIT_1OR2:
+		  if (datum_value != (instr_nibl & ~0x2))
+		    nibl_matched = 0;
+		  break;
+
+		case CLASS_BIT:
+		  if (datum_value != instr_nibl)
+		    nibl_matched = 0;
+		  break;
+		case CLASS_00II:
+		  if (!((~instr_nibl) & 0x4))
+		    nibl_matched = 0;
+		  break;
+		case CLASS_01II:
+		  if (!(instr_nibl & 0x4))
+		    nibl_matched = 0;
+		  break;
+		case CLASS_0CCC:
+		  if (!((~instr_nibl) & 0x8))
+		    nibl_matched = 0;
+		  break;
+		case CLASS_1CCC:
+		  if (!(instr_nibl & 0x8))
+		    nibl_matched = 0;
+		  break;
+		case CLASS_0DISP7:
+		  if (!((~instr_nibl) & 0x8))
+		    nibl_matched = 0;
+		  nibl_index += 1;
+		  break;
+		case CLASS_1DISP7:
+		  if (!(instr_nibl & 0x8))
+		    nibl_matched = 0;
+		  nibl_index += 1;
+		  break;
+		case CLASS_REGN0:
+		  if (instr_nibl == 0)
+		    nibl_matched = 0;
+		  break;
+		default:
+		  break;
+		}
+	    }
+	  if (nibl_matched)
+	    {
+	      return ptr;
+	    }
+	  ptr++;
+	}
+      return 0;
+    }
+  else
+    {
+
+      if (z8k_inv_list[what] < 0)
+	return 0;
+      return z8k_table + z8k_inv_list[what];
+    }
+}
+
+static char *
+insn_4 (n)
+     int n;
+{
+  switch (n)
+    {
+    case 1:
+      return "((iwords_0>>8) & 0xf)";
+    case 2:
+      return "((ibytes_1 >> 4) & 0xf)";
+    case 3:
+      return "((ibytes_1) & 0xf)";
+    case 4:
+      return "((ibytes_2>>4) & 0xf)";
+    case 5:
+      return "((ibytes_2) & 0xf)";
+    case 6:
+      return "((ibytes_3 >> 4) & 0xf)";
+    case 7:
+      return "((ibytes_3) & 0xf)";
+    default:
+      return "****";
+    }
+}
+
+char *
+ptr_mode ()
+{
+  if (BIG)
+    {
+      return "ptr_long";
+    }
+  return "word";
+}
+
+static
+char *
+ptr_size ()
+{
+  if (BIG)
+    return "4";
+  return "2";
+}
+
+static char *
+reg_n (x)
+     unsigned int x;
+{
+  return reg_names[x & 0xf];
+}
+
+char *
+stack_ptr ()
+{
+  return BIG ? "14" : "15";
+}
+
+char *
+mem ()
+{
+#if 0
+  return BIG ? "segmem" : "unsegmem";
+#else
+  return "mem";
+#endif
+}
+
+int
+match (a)
+     char *a;
+{
+  if (strncmp (p, a, strlen (a)) == 0)
+    {
+      p += strlen (a);
+      return 1;
+    }
+  return 0;
+}
+
+static
+void
+sub (y)
+     char *y;
+{
+  sprintf (d, "%s", y);
+  d += strlen (d);
+}
+
+static char *
+insn_16 (n)
+     int n;
+{
+  switch (n)
+    {
+    case 0:
+      return "(iwords_0)";
+    case 4:
+      return "(iwords_1)";
+    case 8:
+      return "(iwords_2)";
+    case 12:
+      return "(iwords_3)";
+    default:
+      return "****";
+    }
+}
+
+static
+char *
+insn_32 (n)
+     int n;
+{
+  switch (n)
+    {
+    case 0:
+      return "((iwords_0<<16) | (iwords_1))";
+    case 4:
+      return "((iwords_1<<16) | (iwords_2))";
+    case 8:
+      return "((iwords_2<<16) | (iwords_3))";
+    default:
+      return "****";
+    }
+}
+
+static char *
+size_name (x)
+     int x;
+{
+  switch (x)
+    {
+    case 8:
+      return "byte";
+    case 16:
+      return "word";
+    case 32:
+      return "long";
+    case 64:
+      return "quad";
+    }
+  return "!!";
+}
+
+/*VARARGS*/
+void
+emit (string, a1, a2, a3, a4, a5)
+     char *string;
+     char* a1;
+     char* a2;
+     char* a3;
+     char* a4;
+     char* a5;
+{
+  int indent_inc = 0;
+  int indent_dec = 0;
+  int i;
+  char buffer[1000];
+
+  d = buffer;
+  p = string;
+
+  while (*p)
+    {
+      if (match ("<fop>"))
+	{
+	  if (BIG)
+	    {
+	      sub ("bfop");
+	    }
+	  else
+	    {
+	      sub ("sfop");
+	    }
+	}
+      else if (match ("<iptr>"))
+	{
+	  if (BIG)
+	    {
+	      switch (nibs)
+		{
+		case 4:
+		  sub ("(((iwords_1 << 8) | (iwords_2)) & 0x7fffff)");
+		  break;
+		default:
+		  sub ("fail(context,124)");
+		  break;
+		}
+	    }
+	  else
+	    {
+	      switch (nibs)
+		{
+		case 4:
+		  sub ("iwords_1");
+		  break;
+		default:
+		  sub ("fail(context,123)");
+		  break;
+		}
+	    }
+	}
+      else if (match ("<name>"))
+	{
+	  sub (current_name);
+	}
+      else if (match ("<size>"))
+	{
+	  sub (current_size);
+	}
+      else if (match ("<insn_4>"))
+	{
+	  sub (insn_4 (nibs));
+	}
+      else if (match ("<insn_16>"))
+	{
+	  sub (insn_16 (nibs));
+	}
+      else if (match ("<insn_32>"))
+	{
+	  sub (insn_32 (nibs));
+	}
+      else if (match ("iwords_0"))
+	{
+	  sub (current_word0);
+	}
+      else if (match ("ibytes_0"))
+	{
+	  sub (current_byte0);
+	}
+      else if (match ("<ibytes_1>"))
+	{
+	  sub (current_byte1);
+	}
+      else if (match ("<next_size>"))
+	{
+	  if (strcmp (current_size, "word") == 0)
+	    sub ("long");
+	  if (strcmp (current_size, "byte") == 0)
+	    sub ("word");
+	  else if (strcmp (current_size, "long") == 0)
+	    sub ("quad");
+	  else
+	    abort ();
+	}
+      else if (match ("<addr_type>"))
+	{
+	  if (BIG)
+	    sub ("unsigned long");
+	  else
+	    sub ("unsigned short");
+	}
+
+      else if (match ("<c_size>"))
+	{
+	  if (strcmp (current_size, "word") == 0)
+	    sub ("short");
+	  else if (strcmp (current_size, "byte") == 0)
+	    sub ("char");
+	  else if (strcmp (current_size, "long") == 0)
+	    sub ("long");
+	  else
+	    abort ();
+	}
+
+      else if (match ("<pc>"))
+	{
+	  sub ("pc");
+	}
+      else if (match ("<mem>"))
+	{
+	  sub (mem ());
+	}
+      else if (match ("<sp>"))
+	{
+	  sub (stack_ptr ());
+	}
+      else if (match ("<ptr_size>"))
+	{
+	  sub (ptr_size ());
+	}
+      else if (match ("<ptr_mode>"))
+	{
+	  sub (ptr_mode ());
+	}
+      else if (match ("<insn_8>"))
+	{
+	  switch (nibs)
+	    {
+	    case 2:
+	      sub ("(iwords_0&0xff)");
+	      break;
+	    case 4:
+	      sub ("(iwords_1>>8)");
+	      break;
+	    case 6:
+	      sub ("(iwords_1&0xff)");
+	      break;
+	    case 8:
+	      sub ("(iwords_2>>8)");
+	      break;
+	    case 12:
+	      sub ("(/* WHO */iwords_3&0xff)");
+	      break;
+	    default:
+	      abort ();
+	    }
+	}
+      else
+	{
+	  if (*p == '{')
+	    indent_inc++;
+	  if (*p == '}')
+	    indent_dec++;
+	  *d++ = *p;
+	  p++;
+	}
+    }
+  *d++ = 0;
+  indent -= indent_dec;
+  for (i = 0; i < indent; i++)
+    printf ("\t");
+  indent += indent_inc;
+  printf (buffer, a1, a2, a3, a4, a5);
+
+}
+
+/* fetch the lvalues of the operands */
+void
+info_args (p)
+     opcode_entry_type *p;
+{
+  unsigned int *s;
+
+  int done_one_imm8 = 0;
+
+  /* int done_read = 4;*/
+  s = p->byte_info;
+  nibs = 0;
+  while (*s)
+    {
+      switch (*s & CLASS_MASK)
+	{
+	case CLASS_BIT_1OR2:
+	  emit ("register unsigned int imm_src=(<insn_4>& 2)?2:1;\n");
+	  break;
+	case CLASS_BIT:
+	  /* Just ignore these, we've already decoded this bit */
+	  nibs++;
+	  break;
+	case CLASS_REGN0:
+	case CLASS_REG:
+	  /* this nibble tells us which register to use as an arg,
+	     if we've already gobbled the nibble we know what to use */
+	  {
+	    int regname = *s & 0xf;
+
+	    emit ("register unsigned int reg_%s=<insn_4>;\n",
+		  reg_names[regname]);
+
+	    nibs++;
+	  }
+	  break;
+	case CLASS_ADDRESS:
+	  emit ("register unsigned base_%s=<iptr>;\n", reg_n (*s));
+
+	  nibs += SIZE_ADDRESS;
+
+	  break;
+	case CLASS_01II:
+	case CLASS_00II:
+	  emit ("register unsigned int imm_src=<insn_4>&0x2;\n");
+	  nibs++;
+	  break;
+	case CLASS_FLAGS:
+		emit ("register unsigned int imm_src=<insn_4>;\n");
+		nibs++;
+break;	  
+	case CLASS_IMM:
+	  /* Work out the size of the think to fetch */
+
+	  {
+	    switch (*s & ~CLASS_MASK)
+	      {
+	      case ARG_IMM16:
+		emit ("register unsigned imm_src=<insn_16>;\n");
+		nibs += 4;
+		break;
+	      case ARG_IMM32:
+		emit ("register unsigned int imm_src= %s;\n", insn_32 (nibs));
+		nibs += 8;
+		break;
+	      case ARG_IMM4:
+		emit ("register unsigned int imm_src=<insn_4>;\n");
+		nibs++;
+		break;
+	      case ARG_IMM2:
+		emit ("register unsigned int imm_src=<insn_4> & 0x2;\n");
+		nibs++;
+		break;
+
+	      case ARG_IMM4M1:
+		emit ("register unsigned int imm_src=(<insn_4> + 1);\n");
+		nibs++;
+		break;
+	      case ARG_IMM_1:
+		emit ("register unsigned int imm_src=1;\n");
+		break;
+	      case ARG_IMM_2:
+		emit ("register unsigned int imm_src=2;\n");
+		break;
+	      case ARG_NIM8:
+		emit ("register unsigned int imm_src=-<insn_8>;\n");
+		nibs += 2;
+		break;
+	      case ARG_IMM8:
+		if (!done_one_imm8)
+		  {
+		    emit ("register unsigned int imm_src=<insn_8>;\n");
+		    nibs += 2;
+		    done_one_imm8 = 1;
+		  }
+		break;
+	      default:
+		emit ("register int fail%d=fail(context,1);\n", nibs);
+		break;
+	      }
+	    break;
+
+	case CLASS_DISP8:
+	    /* We can't use `(char)' since char might be unsigned.
+	       We can't use `(signed char)' because the compiler might be K&R.
+	       This seems safe, since it only assumes that bytes are 8
+	       bits.  */
+	    emit ("register unsigned int oplval_dst=((ibytes_1 << (sizeof (int) * 8 - 8)) >> (sizeof (int) * 8 - 9)) + pc;\n");
+#if 0
+	    /* Original code: fails if characters are unsigned.  */
+	    emit ("register unsigned int oplval_dst=(((char)ibytes_1)<<1) + pc;\n");
+#endif
+	    nibs += 2;
+	    break;
+	case CLASS_CC:
+	    emit ("register unsigned int op_cc=<insn_4>;\n");
+	    nibs++;
+	    break;
+	default:
+	    emit ("register int FAIL%d=fail(context,2);\n", nibs);
+	    break;
+	  }
+	  ;
+	  /* work out how to fetch the immediate value */
+	}
+
+      s++;
+    }
+}
+
+void
+info_special (p, getdst, nostore, before, nosrc)
+     opcode_entry_type *p;
+     int *getdst;
+     int *nostore;
+     int *before;
+     int *nosrc;
+{
+  switch (p->opcode)
+    {
+    case OPC_exts:
+    case OPC_extsb:
+    case OPC_extsl:
+      *nostore = 1;
+      *nosrc = 1;
+      break;
+    case OPC_ldm:
+      *nostore = 1;
+      *nosrc = 1;
+      break;
+    case OPC_negb:
+    case OPC_neg:
+    case OPC_sla:
+    case OPC_slab:
+    case OPC_slal:
+    case OPC_sda:
+    case OPC_sdab:
+    case OPC_sdal:
+    case OPC_com:
+    case OPC_comb:
+    case OPC_adc:
+    case OPC_sbc:
+    case OPC_nop:
+    case OPC_adcb:
+    case OPC_add:
+    case OPC_addb:
+    case OPC_addl:
+    case OPC_inc:
+    case OPC_sub:
+    case OPC_subb:
+    case OPC_subl:
+    case OPC_and:
+    case OPC_andb:
+    case OPC_xorb:
+    case OPC_xor:
+      break;
+
+    case OPC_mult:
+    case OPC_multl:
+    case OPC_div:
+    case OPC_divl:
+
+      *nostore = 1;
+      break;
+
+    case OPC_testb:
+    case OPC_test:
+    case OPC_testl:
+    case OPC_cp:
+    case OPC_cpb:
+    case OPC_cpl:
+    case OPC_bit:
+      *nostore = 1;
+      *before = 0;
+      break;
+
+    case OPC_bpt:
+    case OPC_jr:
+    case OPC_jp:
+    case OPC_ret:
+    case OPC_call:
+    case OPC_tcc:
+      *nosrc = 1;
+      *nostore = 1;
+      *before = 1;
+      break;
+    case OPC_sc:
+      *nostore = 1;
+      *before = 0;
+      break;
+    case OPC_clrb:
+    case OPC_clr:
+      *before = 1;
+      *nosrc = 1;
+      break;
+    case OPC_ldi:
+    case OPC_ldib:
+    case OPC_lddb:
+    case OPC_ldd:
+
+      *before = 1;
+      *nostore = 1;
+      *nosrc = 1;
+      break;
+    case OPC_ldk:
+    case OPC_ld:
+    case OPC_ldb:
+    case OPC_ldl:
+      *before = 1;
+      *getdst = 0;
+      break;
+    case OPC_push:
+    case OPC_pushl:
+    case OPC_pop:
+    case OPC_popl:
+      *before = 1;
+      *getdst = 0;
+      break;
+    case OPC_lda:
+      *nosrc = 1;
+      break;
+    }
+}
+
+/* calculate the lvalues required for the opcode */
+void
+info_lvals (p)
+     opcode_entry_type *p;
+{
+  /* emit code to work out lvalues, if any */
+  unsigned int *i = p->arg_info;
+
+  while (*i)
+    {
+      current_name = reg_n (*i);
+      current_size = size_name (p->type);
+      switch (*i & CLASS_MASK)
+	{
+	case CLASS_X:
+	  /* address(reg) */
+	  emit ("register  <addr_type> oplval_<name>= ((base_<name> + (short)get_word_reg(context,reg_<name>)) & 0xffff) + (base_<name> & ~0xffff);\n");
+	  break;
+	case CLASS_IR:
+	  /* Indirect register */
+	  emit ("register  int oplval_<name> = get_<ptr_mode>_reg(context,reg_<name>);\n");
+	  break;
+	case CLASS_DA:
+	  emit ("register  int oplval_<name>=base_<name>;\n");
+	  break;
+	case CLASS_IMM:
+	case CLASS_REG_WORD:
+	case CLASS_REG_LONG:
+	case CLASS_REG_BYTE:
+	case CLASS_PR:
+	  break;
+	case CLASS_BA:
+	  emit ("register  int oplval_<name> = get_<ptr_mode>_reg(context,reg_<name>) + (short)(imm_src);\n");
+	  break;
+	case CLASS_BX:
+	  emit ("register  int oplval_<name> = get_<ptr_mode>_reg(context,reg_<name>)\n");
+	  emit ("  + get_word_reg(context,reg_aux_x);\n");
+	  break;
+	}
+      i++;
+    }
+}
+
+/* emit code to fetch the args from calculated lvalues */
+int allregs;
+void
+info_fetch (p, getdst)
+     opcode_entry_type *p;
+     int getdst;
+{
+  unsigned int *i = p->arg_info;
+  int had_src = 0;
+
+  allregs = 1;
+  while (*i)
+    {
+
+      current_name = reg_n (*i);
+      current_size = size_name (p->type);
+      switch (*i & CLASS_MASK)
+	{
+	case CLASS_X:
+	case CLASS_IR:
+	case CLASS_BA:
+	case CLASS_BX:
+	case CLASS_DA:
+	  if (!getdst && IS_DST (*i))
+	    break;
+	  emit ("register int op_<name>= get_<size>_<mem>_da(context,oplval_<name>);\n");
+	  allregs = 0;
+	  break;
+	case CLASS_IMM:
+	  if (!had_src)
+	    {
+	      if (p->opcode == OPC_out ||
+		  p->opcode == OPC_outb ||
+		  p->opcode == OPC_sout ||
+		  p->opcode == OPC_soutb)
+		{
+		  /* The imm is a dest here */
+		  emit ("register int op_dst = imm_src;\n");
+		}
+	      else
+		{
+		  emit ("register int op_src = imm_src;\n");
+		}
+	    }
+	  break;
+	case CLASS_REG_QUAD:
+	  if (!getdst && IS_DST (*i))
+	    break;
+	  had_src |= IS_SRC (*i);
+	  emit ("UDItype op_<name> ;\n");
+
+	  break;
+	case CLASS_REG_WORD:
+	  if (!getdst && IS_DST (*i))
+	    break;
+	  had_src |= IS_SRC (*i);
+	  emit ("register int op_<name> = get_word_reg(context,reg_<name>);\n");
+	  break;
+
+	case CLASS_REG_LONG:
+	  if (!getdst && IS_DST (*i))
+	    break;
+	  had_src |= IS_SRC (*i);
+	  emit ("register int op_<name> = get_long_reg(context,reg_<name>);\n");
+	  break;
+	case CLASS_REG_BYTE:
+	  if (!getdst && IS_DST (*i))
+	    break;
+	  had_src |= IS_SRC (*i);
+	  emit ("register int op_<name> = get_byte_reg(context,reg_<name>);\n");
+	  break;
+	}
+      i++;
+    }
+}
+
+static void
+normal_flags (p, s, neg)
+     opcode_entry_type *p;
+     char *s;
+{
+  emit (" %s;\n", s);
+  emit ("NORMAL_FLAGS(context,%d, tmp,  op_dst, op_src,%d); \n", p->type,neg);
+}
+
+static void
+test_normal_flags (p, s, opt)
+     opcode_entry_type *p;
+     char *s;
+     int opt;
+{
+  emit (" %s;\n", s);
+  if (0 && opt)
+    {
+      emit ("context->broken_flags = TST_FLAGS;\n");
+      emit ("context->size = %d;\n", p->type);
+    }
+  else
+    {
+      emit ("TEST_NORMAL_FLAGS(context,%d, tmp); \n", p->type);
+    }
+
+}
+
+static void
+optimize_normal_flags (p, s,neg)
+     opcode_entry_type *p;
+     char *s;
+{
+  emit (" %s;\n", s);
+#if 0
+  emit ("context->broken_flags = CMP_FLAGS;\n");
+#else
+  emit ("NORMAL_FLAGS(context,%d, tmp,  op_dst, op_src,%d); \n", p->type, neg);
+#endif
+}
+
+static
+void
+jp (p)
+     opcode_entry_type *p;
+{
+
+  emit ("if(op_cc == 8 || COND(context,op_cc)) pc = oplval_dst;\n");
+}
+
+static void
+jr (p)
+     opcode_entry_type *p;
+{
+  emit ("if(op_cc == 8 || COND(context,op_cc)) pc = oplval_dst;\n");
+}
+
+static void
+ret (p)
+     opcode_entry_type *p;
+{
+  emit ("if(op_cc == 8 || COND(context,op_cc))\n{\n");
+  emit ("pc = get_<ptr_mode>_<mem>_ir(context,<sp>);\n");
+  emit ("put_<ptr_mode>_reg(context,<sp>, get_<ptr_mode>_reg(context,<sp>) + <ptr_size>);\n");
+  emit ("};\n");
+}
+
+static void
+call (p)
+     opcode_entry_type *p;
+{
+  emit ("put_<ptr_mode>_reg(context,<sp>,tmp =  get_<ptr_mode>_reg(context,<sp>) - <ptr_size>);\n");
+  emit ("put_<ptr_mode>_<mem>_da(context,tmp, pc);\n");
+  emit ("pc = oplval_dst;\n");
+}
+
+static void
+push (p)
+     opcode_entry_type *p;
+{
+  emit ("tmp = op_src;\n");
+  emit ("oplval_dst -= %d;\n", p->type / 8);
+  emit ("put_<ptr_mode>_reg(context,reg_dst, oplval_dst);\n");
+}
+
+static void
+pop (p)
+     opcode_entry_type *p;
+{
+  emit ("tmp = op_src;\n");
+  emit ("put_<ptr_mode>_reg(context,reg_src, oplval_src + %d);\n", p->type / 8);
+}
+
+static void
+ld (p)
+     opcode_entry_type *p;
+{
+  emit ("tmp = op_src;\n");
+}
+
+static void
+sc ()
+{
+  emit ("support_call(context,imm_src);\n");
+}
+
+static void
+bpt ()
+{
+  emit ("pc -=2; \n");
+  emit ("context->exception = SIM_BREAKPOINT;\n");
+}
+
+static void
+ldi (p, size, inc)
+     opcode_entry_type *p;
+     int size;
+     int inc;
+{
+  int dinc = (size / 8) * inc;
+
+  current_size = size_name (size);
+  emit ("{ \n");
+  emit ("int type = %s;\n", insn_4 (7));
+  emit ("int rs = get_<ptr_mode>_reg(context,reg_src);\n");
+  emit ("int rd = get_<ptr_mode>_reg(context,reg_dst);\n");
+  emit ("int rr = get_word_reg(context,reg_aux_r);\n");
+  emit ("do {\n");
+  emit ("put_<size>_<mem>_da(context,rd, get_<size>_<mem>_da(context,rs));\n");
+  emit ("rd += %d;\n", dinc);
+  emit ("rs += %d;\n", dinc);
+  emit ("rr --;\n");
+  emit ("context->cycles += 9;\n");
+  emit ("} while (!type && rr != 0 && context->exception <= 1);\n");
+  emit ("if (context->exception>1) pc -=4;\n");
+  emit ("put_<ptr_mode>_reg(context,reg_src, rs);\n");
+  emit ("put_<ptr_mode>_reg(context,reg_dst, rd);\n");
+  emit ("put_word_reg(context,reg_aux_r, rr);\n");
+  emit ("}\n");
+
+}
+
+static void
+shift (p, arith)
+     opcode_entry_type *p;
+     int arith;
+{
+
+  /* We can't use `(char)' since char might be unsigned.
+     We can't use `(signed char)' because the compiler might be K&R.
+     This seems safe, since it only assumes that bytes are 8 bits.  */
+  emit ("op_src = (op_src << (sizeof (int) * 8 - 8)) >> (sizeof (int) * 8 - 8);\n");
+#if 0
+  /* Original code: fails if characters are unsigned.  */
+  emit ("op_src = (char)op_src;\n");
+#endif
+  emit ("if (op_src < 0) \n");
+  emit ("{\n");
+  emit ("op_src = -op_src;\n");
+  emit ("op_dst = (%s <c_size>)op_dst;\n", arith ? "" : "unsigned");
+  emit ("tmp = (%s op_dst) >> op_src;\n", arith ? "" : "(unsigned)");
+  emit ("context->carry = op_dst >> (op_src-1);\n", p->type);
+  emit ("}\n");
+  emit ("else\n");
+  emit ("{\n");
+  emit ("tmp = op_dst << op_src;\n");
+  emit ("context->carry = op_dst >> (%d - op_src);\n", p->type);
+  emit ("}\n");
+  emit ("context->zero = (<c_size>)tmp == 0;\n");
+  emit ("context->sign = (int)((<c_size>)tmp) < 0;\n");
+  emit ("context->overflow = ((int)tmp < 0) != ((int)op_dst < 0);\n");
+  emit ("context->cycles += 3*op_src;\n");
+  emit ("context->broken_flags = 0;\n");
+
+}
+
+static void
+rotate (p, through_carry, size, left)
+     opcode_entry_type *p;
+     int through_carry;
+     int size;
+     int left;
+{
+
+  if (!left)
+    {
+      emit ("while (op_src--) {\n");
+      emit ("int rotbit;\n");
+      emit ("rotbit = op_dst & 1;\n");
+      emit ("op_dst = ((unsigned)op_dst) >> 1;\n");
+
+      if (through_carry)
+	{
+	  emit ("op_dst |= context->carry << %d;\n", size - 1);
+	}
+      else
+	{
+	  emit ("op_dst |= rotbit << %d;\n", size - 1);
+	}
+      emit ("context->carry = rotbit;\n");
+      emit ("}\n");
+    }
+  else
+    {
+      emit ("while (op_src--) {\n");
+      emit ("int rotbit;\n");
+
+      emit ("rotbit = (op_dst >> (%d))&1;\n", size - 1);
+      emit ("op_dst <<=1;\n");
+      if (through_carry)
+	{
+	  emit ("if (context->carry) op_dst |=1;\n");
+	}
+      else
+	{
+	  emit ("if (rotbit) op_dst |= 1;\n");
+	}
+      emit ("context->carry = rotbit;\n");
+      emit ("}\n");
+    }
+  emit ("tmp = (<c_size>)op_dst;\n");
+  emit ("context->zero = tmp == 0;\n");
+  emit ("context->sign = (int)tmp < 0;\n");
+  emit ("context->overflow = ((int)tmp < 0) != ((int)op_dst < 0);\n");
+  emit ("context->cycles += 3*op_src;\n");
+  emit ("context->broken_flags = 0;\n");
+
+}
+
+static void
+adiv (p)
+     opcode_entry_type *p;
+{
+  emit ("if (op_src==0)\n");
+  emit ("{\n");
+  emit ("context->exception = SIM_DIV_ZERO;\n");
+  emit ("}\n");
+  emit ("else\n");
+  emit ("{\n");
+
+  if (p->type == 32)
+    {
+      emit ("op_dst.low = (int)get_long_reg(context,reg_dst+2);\n");
+      emit ("op_dst.high = (int)get_long_reg(context,reg_dst+0);\n");
+#ifdef __GNUC__
+      emit ("tmp = (((long long)op_dst.high << 32) + (op_dst.low)) / (int)op_src;\n");
+#else
+      emit ("tmp = (long)op_dst.low / (int)op_src;\n");
+#endif
+      emit ("put_long_reg(context,reg_dst+2, tmp);\n");
+#ifdef __GNUC__
+      emit ("put_long_reg(context,reg_dst, (((long long)op_dst.high << 32) + (op_dst.low)) %% (int)op_src);\n");
+#else
+      emit ("put_long_reg(context,reg_dst, (int)op_dst.low %% (int)op_src);\n");
+#endif
+
+      emit ("context->zero = op_src == 0 || (op_dst.low==0 && op_dst.high==0);\n");
+    }
+  else
+    {
+      emit ("tmp = (long)op_dst / (short)op_src;\n");
+      emit ("put_word_reg(context,reg_dst+1, tmp);\n");
+      emit ("put_word_reg(context,reg_dst, (long) op_dst %% (short)op_src);\n");
+      emit ("context->zero = op_src == 0 || op_dst==0;\n");
+    }
+
+  emit ("context->sign = (int)tmp < 0;\n");
+  emit ("context->overflow =(tmp & 0x%x) != 0;\n",
+	~((1 << (p->type)) - 1));
+  emit ("context->carry = (tmp & 0x%x) != 0;\n",
+	~(1 << (p->type)));
+
+  emit ("}\n");
+}
+
+static void
+dobit (p)
+opcode_entry_type *p;
+{
+  emit("context->zero = (op_dst & (1<<op_src))==0;\n");
+  emit("context->broken_flags = 0;\n");
+}
+static void
+doset (p, v)
+opcode_entry_type*p;
+int v;
+{
+  if (v) 
+    emit (" tmp = op_dst | (1<< op_src);\n");
+  else
+    emit (" tmp = op_dst & ~(1<< op_src);\n");
+}
+
+static void
+mult (p)
+     opcode_entry_type *p;
+{
+
+  if (p->type == 32)
+    {
+      emit ("op_dst.low =  get_long_reg(context,reg_dst+2);\n");
+      emit ("tmp = op_dst.low * op_src;\n");
+      emit ("put_long_reg(context,reg_dst+2, tmp);\n");
+      emit ("put_long_reg(context,reg_dst, 0);\n");
+    }
+  else
+    {
+      emit ("op_dst =  get_word_reg(context,reg_dst+1);\n");
+      emit ("tmp = op_dst * op_src;\n");
+      emit ("put_long_reg(context,reg_dst, tmp);\n");
+    }
+
+  emit ("context->sign = (int)tmp < 0;\n");
+  emit ("context->overflow =0;\n");
+  emit ("context->carry = (tmp & 0x%x) != 0;\n", ~((1 << (p->type)) - 1));
+  emit ("context->zero = tmp == 0;\n");
+
+}
+
+static void
+exts (p)
+     opcode_entry_type *p;
+{
+  /* Fetch the ls part of the src */
+  current_size = size_name (p->type * 2);
+
+  if (p->type == 32)
+    {
+      emit ("tmp= get_long_reg(context,reg_dst+2);\n");
+      emit ("if (tmp & (1<<%d)) {\n", p->type - 1);
+      emit ("put_long_reg(context,reg_dst, 0xffffffff);\n");
+      emit ("}\n");
+      emit ("else\n");
+      emit ("{\n");
+      emit ("put_long_reg(context,reg_dst, 0);\n");
+      emit ("}\n");
+    }
+  else
+    {
+      emit ("tmp= get_<size>_reg(context,reg_dst);\n");
+      emit ("if (tmp & (1<<%d)) {\n", p->type - 1);
+      emit ("tmp |= 0x%x;\n", ~((1 << p->type) - 1));
+      emit ("}\n");
+      emit ("else\n");
+      emit ("{\n");
+
+      emit ("tmp &= 0x%x;\n", ((1 << p->type) - 1));
+      emit ("}\n");
+      emit ("put_<size>_reg(context,reg_dst, tmp);\n");
+    }
+}
+doflag(on)
+int on;
+{
+  /* Load up the flags */
+  emit(" COND (context, 0x0b);\n");
+
+  if (on)
+    emit ("{ int on =1;\n ");
+  else
+    emit ("{ int on =0;\n ");
+
+  emit ("if (imm_src & 1)\n");
+  emit ("PSW_OVERFLOW = on;\n");
+
+  emit ("if (imm_src & 2)\n");
+  emit ("PSW_SIGN = on;\n");
+
+  emit ("if (imm_src & 4)\n");
+  emit ("PSW_ZERO = on;\n");
+
+  emit ("if (imm_src & 8)\n");
+  emit ("PSW_CARRY = on;\n");
+  emit("}\n");
+
+
+}
+/* emit code to perform operation */
+void
+info_docode (p)
+     opcode_entry_type *p;
+{
+  switch (p->opcode)
+    {
+    case OPC_clr:
+    case OPC_clrb:
+      emit ("tmp = 0;\n");
+      break;
+    case OPC_ex:
+    case OPC_exb:
+
+      emit ("tmp = op_src; \n");
+      if (allregs)
+	{
+	  emit ("put_<size>_reg(context,reg_src, op_dst);\n");
+	}
+      else
+	{
+	  emit ("put_<size>_mem_da(context, oplval_src, op_dst);\n");
+	}
+      break;
+    case OPC_adc:
+    case OPC_adcb:
+      normal_flags (p, "op_src += COND(context,7);tmp = op_dst + op_src ;",0);
+      break;
+    case OPC_sbc:
+      normal_flags (p, "op_src +=  COND(context,7);tmp = op_dst - op_src ;",1);
+      break;
+    case OPC_nop:
+      break;
+    case OPC_com:
+    case OPC_comb:
+      test_normal_flags (p, "tmp = ~ op_dst", 1);
+      break;
+    case OPC_and:
+    case OPC_andb:
+      test_normal_flags (p, "tmp = op_dst & op_src", 1);
+      break;
+    case OPC_xor:
+    case OPC_xorb:
+      test_normal_flags (p, "tmp = op_dst ^ op_src", 1);
+      break;
+    case OPC_or:
+    case OPC_orb:
+      test_normal_flags (p, "tmp = op_dst | op_src", 1);
+      break;
+    case OPC_sla:
+    case OPC_slab:
+    case OPC_slal:
+    case OPC_sda:
+    case OPC_sdab:
+    case OPC_sdal:
+      shift (p, 1);
+      break;
+
+    case OPC_sll:
+    case OPC_sllb:
+    case OPC_slll:
+    case OPC_sdl:
+    case OPC_sdlb:
+    case OPC_sdll:
+      shift (p, 0);
+      break;
+    case OPC_rl:
+      rotate (p, 0, 16, 1);
+      break;
+    case OPC_rlb:
+      rotate (p, 0, 8, 1);
+      break;
+    case OPC_rr:
+      rotate (p, 0, 16, 0);
+      break;
+    case OPC_rrb:
+      rotate (p, 0, 8, 0);
+      break;
+    case OPC_rrc:
+      rotate (p, 1, 16, 0);
+      break;
+    case OPC_rrcb:
+      rotate (p, 1, 8, 0);
+      break;
+    case OPC_rlc:
+      rotate (p, 1, 16, 1);
+      break;
+    case OPC_rlcb:
+      rotate (p, 1, 8, 1);
+      break;
+
+    case OPC_extsb:
+    case OPC_exts:
+    case OPC_extsl:
+      exts (p);
+      break;
+    case OPC_add:
+    case OPC_addb:
+    case OPC_addl:
+    case OPC_inc:
+    case OPC_incb:
+      optimize_normal_flags (p, "tmp = op_dst + op_src",0);
+      break;
+    case OPC_testb:
+    case OPC_test:
+    case OPC_testl:
+      test_normal_flags (p, "tmp = op_dst", 0);
+      break;
+    case OPC_cp:
+    case OPC_cpb:
+    case OPC_cpl:
+      normal_flags (p, "tmp = op_dst - op_src",1);
+      break;
+    case OPC_negb:
+    case OPC_neg:
+      emit ("{\n");
+      emit ("int op_src = -op_dst;\n");
+      emit ("op_dst = 0;\n");
+      optimize_normal_flags (p, "tmp = op_dst + op_src;\n",1);
+      emit ("}");
+      break;
+
+    case OPC_sub:
+    case OPC_subb:
+    case OPC_subl:
+    case OPC_dec:
+    case OPC_decb:
+      optimize_normal_flags (p, "tmp = op_dst - op_src",1);
+      break;
+    case OPC_bpt:
+      bpt ();
+      break;
+    case OPC_jr:
+      jr (p);
+      break;
+    case OPC_sc:
+      sc ();
+      break;
+    case OPC_jp:
+      jp (p);
+      break;
+    case OPC_ret:
+      ret (p);
+      break;
+    case OPC_call:
+      call (p);
+      break;
+    case OPC_tcc:
+    case OPC_tccb:
+      emit ("if(op_cc == 8 || COND(context,op_cc)) put_word_reg(context,reg_dst, 1);\n");
+      break;
+    case OPC_lda:
+      emit ("tmp = oplval_src; \n");
+      /*(((oplval_src) & 0xff0000) << 8) | (oplval_src & 0xffff); \n");*/
+      break;
+    case OPC_ldk:
+    case OPC_ld:
+
+    case OPC_ldb:
+    case OPC_ldl:
+      ld (p);
+      break;
+    case OPC_ldib:
+      ldi (p, 8, 1);
+      break;
+    case OPC_ldi:
+      ldi (p, 16, 1);
+      break;
+
+    case OPC_lddb:
+      ldi (p, 8, -1);
+      break;
+    case OPC_ldd:
+      ldi (p, 16, -1);
+      break;
+
+    case OPC_push:
+    case OPC_pushl:
+      push (p);
+      break;
+
+    case OPC_div:
+    case OPC_divl:
+      adiv (p);
+      break;
+    case OPC_mult:
+    case OPC_multl:
+      mult (p);
+      break;
+    case OPC_pop:
+    case OPC_popl:
+      pop (p);
+      break;
+    case OPC_set:
+      doset (p,1);
+      break;
+    case OPC_res:
+      doset (p,0);
+      break;
+    case OPC_bit:
+      dobit(p);
+      break;
+    case OPC_resflg:
+      doflag(0);
+      break;
+    case OPC_setflg:
+      doflag(1);
+      break;
+    default:
+
+      emit ("tmp = fail(context,%d);\n", p->opcode);
+      break;
+    }
+}
+
+/* emit code to store result in calculated lvalue */
+
+void
+info_store (p)
+     opcode_entry_type *p;
+{
+  unsigned int *i = p->arg_info;
+
+  while (*i)
+    {
+      current_name = reg_n (*i);
+      current_size = size_name (p->type);
+
+      if (IS_DST (*i))
+	{
+	  switch (*i & CLASS_MASK)
+	    {
+	    case CLASS_PR:
+	      emit ("put_<ptr_mode>_reg(context,reg_<name>, tmp);\n");
+	      break;
+	    case CLASS_REG_LONG:
+	    case CLASS_REG_WORD:
+	    case CLASS_REG_BYTE:
+
+	      emit ("put_<size>_reg(context,reg_<name>,tmp);\n");
+	      break;
+	    case CLASS_X:
+	    case CLASS_IR:
+	    case CLASS_DA:
+	    case CLASS_BX:
+	    case CLASS_BA:
+
+	      emit ("put_<size>_<mem>_da(context,oplval_<name>, tmp);\n");
+	      break;
+	    case CLASS_IMM:
+	      break;
+	    default:
+	      emit ("abort(); ");
+	      break;
+	    }
+
+	}
+      i++;
+    }
+}
+
+static
+void
+mangle (p, shortcut, value)
+     opcode_entry_type *p;
+     int shortcut;
+     int value;
+{
+  int nostore = 0;
+  int extra;
+  int getdst = 1;
+  int before = 0;
+  int nosrc = 0;
+
+  emit ("/\052 %s \052/\n", p->nicename);
+  if (shortcut)
+    {
+      emit ("int <fop>_%04x(context,pc)\n", value);
+    }
+  else
+    {
+      emit ("int <fop>_%d(context,pc,iwords0)\n", p->idx);
+      emit ("int iwords0;\n");
+    }
+  emit ("sim_state_type *context;\n");
+  emit ("int pc;\n");
+  emit ("{\n");
+  emit ("register unsigned int tmp;\n");
+  if (shortcut)
+    {
+      emit ("register unsigned int iwords0 = 0x%x;\n", value);
+    }
+
+  /* work out how much bigger this opcode could be because it's large
+     model */
+  if (BIG)
+    {
+      int i;
+
+      extra = 0;
+      for (i = 0; i < 4; i++)
+	{
+	  if ((p->arg_info[i] & CLASS_MASK) == CLASS_DA
+	      || (p->arg_info[i] & CLASS_MASK) == CLASS_X)
+	    extra += 2;
+	}
+    }
+  else
+    {
+      extra = 0;
+    }
+  printf ("			/* Length %d */ \n", p->length + extra);
+  switch (p->length + extra)
+    {
+    case 2:
+      emit ("pc += 2\n;");
+      break;
+    case 4:
+      emit ("register unsigned int iwords1 = get_word_mem_da(context,pc+2);\n");
+      emit ("pc += 4;\n");
+      break;
+    case 6:
+
+      emit ("register unsigned int iwords1 = get_word_mem_da(context,pc+2);\n");
+      emit ("register unsigned int iwords2 = get_word_mem_da(context,pc+4);\n");
+      emit ("pc += 6;\n");
+      break;
+    case 8:
+      emit ("register unsigned int iwords1 = get_word_mem_da(context,pc+2);\n");
+      emit ("register unsigned int iwords2 = get_word_mem_da(context,pc+4);\n");
+      emit ("register unsigned int iwords3 = get_word_mem_da(context,pc+6);\n");
+      emit ("pc += 8;\n");
+      break;
+    default:
+      break;
+
+    }
+  emit ("context->cycles += %d;\n", p->cycles);
+
+  emit ("{\n");
+  info_args (p);
+  info_special (p, &getdst, &nostore, &before, &nosrc);
+
+  info_lvals (p);
+  if (!nosrc)
+    {
+      info_fetch (p, getdst);
+    }
+
+  if (before)
+    {
+      info_docode (p);
+    }
+  else
+    {
+      info_docode (p);
+    }
+  if (!nostore)
+    info_store (p);
+  emit ("}\n");
+  emit ("return pc;\n");
+  emit ("}\n");
+}
+
+void
+static
+one_instruction (i)
+     int i;
+{
+  /* find the table entry */
+  opcode_entry_type *p = z8k_table + i;
+
+  if (!p)
+    return;
+  mangle (p, 0, 0);
+}
+
+void
+add_to_list (ptr, value)
+     struct opcode_value **ptr;
+     int value;
+{
+  struct opcode_value *prev;
+
+  prev = *ptr;
+  *ptr = (struct opcode_value *) malloc (sizeof (struct opcode_value));
+
+  (*ptr)->n = value;
+  (*ptr)->next = prev;
+}
+
+void
+build_list (i)
+     int i;
+{
+  opcode_entry_type *p = lookup_inst (i);
+
+  if (!p)
+    return;
+  add_to_list (&list[p->idx], i);
+}
+
+int
+main (ac, av)
+     int ac;
+     char **av;
+{
+  int i;
+  int needcomma = 0;
+
+  makelist = 0;
+
+  for (i = 1; i < ac; i++)
+    {
+      if (strcmp (av[i], "-m") == 0)
+	makelist = 1;
+      if (strcmp (av[i], "-1") == 0)
+	file = 1;
+      if (strcmp (av[i], "-2") == 0)
+	file = 2;
+      if (strcmp (av[i], "-3") == 0)
+	file = 3;
+      if (strcmp (av[i], "-b3") == 0)
+	{
+	  file = 3;
+	  BIG = 1;
+	}
+
+    }
+  if (makelist)
+    {
+
+      int i;
+      needcomma = 0;
+      printf ("short int z8k_inv_list[] = {\n");
+
+      for (i = 0; i < 1 << 16; i++)
+	{
+	  opcode_entry_type *p = lookup_inst (i);
+
+	  if(needcomma)
+	    printf(",");
+	  if ((i & 0xf) == 0)
+	    printf ("\n");
+
+#if 0
+	  printf ("\n		/*%04x %s */", i, p ? p->nicename : "");
+#endif
+
+	  if (!p)
+	    {
+	      printf ("-1");
+	    }
+	  else
+	    {
+	      printf ("%d", p->idx);
+	    }
+
+	  if ((i & 0x3f) == 0 && DIRTY_HACK)
+	    {
+	      printf ("\n#ifdef __GNUC__\n");
+	      printf ("};\n");
+	      printf("short int int_list%d[] = {\n", i);
+	      printf ("#else\n");
+	      printf (",\n");
+	      printf ("#endif\n");
+	      needcomma = 0;
+	    }
+	  else
+	    needcomma = 1;
+
+	}
+      printf ("};\n");
+      return 1;
+    }
+
+  /* First work out which opcodes use which bit patterns,
+     build a list of all matching bit pattens */
+  for (i = 0; i < 1 << 16; i++)
+    {
+      build_list (i);
+    }
+#if DUMP_LIST
+  for (i = 0; i < NOPS; i++)
+    {
+      struct opcode_value *p;
+
+      printf ("%d,", i);
+      p = list[i];
+      while (p)
+	{
+	  printf (" %04x,", p->n);
+	  p = p->next;
+	}
+      printf ("-1\n");
+    }
+
+#endif
+
+  if (file == 1)
+    {
+      extern int quick[];
+
+      /* Do the shortcuts */
+      printf ("			/* SHORTCUTS */\n");
+      for (i = 0; quick[i]; i++)
+	{
+	  int t = quick[i];
+
+	  mangle (z8k_table + z8k_inv_list[t],
+		  1,
+		  t);
+	}
+    }
+  if (file == 3)
+    {
+      printf ("			/* NOT -SHORTCUTS */\n");
+      for (i = 0; i < NOPS; i++)
+	{
+	  if (list[i])
+	    {
+	      one_instruction (i);
+	    }
+	  else
+	    {
+	      emit ("int <fop>_%d(context,pc)\n", i);
+	      printf ("sim_state_type *context;\n");
+	      printf ("int pc;\n");
+	      emit ("{ <fop>_bad1();return pc; }\n");
+	    }
+	}
+      emit ("int <fop>_bad() ;\n");
+
+      /* Write the jump table */
+      emit ("int (*(<fop>_table[]))() = {");
+      needcomma = 0;
+      for (i = 0; i < NOPS; i++)
+	{
+	  if (needcomma)
+	    printf (",");
+	  emit ("<fop>_%d\n", i);
+	  needcomma = 1;
+	  if ((i & 0x3f) == 0 && DIRTY_HACK)
+	    {
+	      printf ("#ifdef __GNUC__\n");
+	      printf ("};\n");
+	      emit ("int (*(<fop>_table%d[]))() = {\n", i);
+	      printf ("#else\n");
+	      printf (",\n");
+	      printf ("#endif\n");
+	      needcomma = 0;
+	    }
+	}
+      emit ("};\n");
+    }
+
+  if (file == 2)
+    {
+      extern int quick[];
+      /* Static - since it's too be to be automatic on the apollo */
+      static int big[64 * 1024];
+
+      for (i = 0; i < 64 * 1024; i++)
+	big[i] = 0;
+
+      for (i = 0; quick[i]; i++)
+	{
+#if 0
+
+	  printf ("extern int <fop>_%04x();\n", quick[i]);
+#endif
+
+	  big[quick[i]] = 1;
+	}
+
+      for (i = 0; i < NOPS; i++)
+	{
+#if 0
+	  printf ("extern int fop_%d();\n", i);
+#endif
+	}
+#if 0
+      printf ("extern int fop_bad();\n");
+#endif
+      printf ("struct op_info op_info_table[] = {\n");
+      for (i = 0; i < 1 << 16; i++)
+	{
+	  int inv = z8k_inv_list[i];
+	  opcode_entry_type *p = z8k_table + inv;
+
+	  if (needcomma)
+	    printf (",");
+#if 0
+	  if (big[i])
+	    {
+	      printf ("<fop>_%04x", i);
+	    }
+	  else
+#endif
+	  if (inv >= 0)
+	    {
+	      printf ("%d", inv);
+	    }
+	  else
+	    printf ("400");
+	  if (inv >= 0)
+	    {
+	      printf ("		/* %04x %s */\n", i, p->nicename);
+	    }
+	  else
+	    {
+	      printf ("\n");
+	    }
+	  needcomma = 1;
+	  if ((i & 0x3f) == 0 && DIRTY_HACK)
+	    {
+	      printf ("#ifdef __GNUC__\n");
+	      printf ("}; \n");
+	      printf ("struct op_info op_info_table%d[] = {\n", i);
+	      printf ("#else\n");
+	      printf (",\n");
+
+	      printf ("#endif\n");
+	      needcomma = 0;
+	    }
+	}
+      printf ("};\n");
+
+    }
+  return 0;
+}
+
+char *
+insn_ptr (n)
+     int n;
+{
+  if (BIG)
+    {
+      abort ();
+    }
+
+  switch (n)
+    {
+    case 4:
+      return "iwords_1";
+    default:
+      return "fail(context,123)";
+    }
+}
+
+/* work out if the opcode only wants lvalues */
+int
+lvalue (p)
+     opcode_entry_type *p;
+{
+  switch (p->opcode)
+    {
+    case OPC_lda:
+      return 1;
+    case OPC_call:
+    case OPC_jp:
+      return 1;
+    default:
+      return 0;
+    }
+}
+
+int
+info_len_in_words (o)
+     opcode_entry_type *o;
+{
+  unsigned  int *p = o->byte_info;
+  int nibs = 0;
+
+  while (*p)
+    {
+      switch (*p & CLASS_MASK)
+	{
+	case CLASS_BIT:
+	case CLASS_REGN0:
+	case CLASS_REG:
+	case CLASS_01II:
+	case CLASS_00II:
+	  nibs++;
+	  break;
+	case CLASS_ADDRESS:
+	  nibs += SIZE_ADDRESS;
+	  break;
+	case CLASS_IMM:
+	  switch (*p & ~CLASS_MASK)
+	    {
+	    case ARG_IMM16:
+	      nibs += 4;
+	      break;
+	    case ARG_IMM32:
+	      nibs += 8;
+	      break;
+	    case ARG_IMM2:
+	    case ARG_IMM4:
+	    case ARG_IMM4M1:
+	    case ARG_IMM_1:
+	    case ARG_IMM_2:
+	    case ARG_IMMNMINUS1:
+	      nibs++;
+	      break;
+	    case ARG_NIM8:
+
+	    case ARG_IMM8:
+	      nibs += 2;
+	      break;
+	    default:
+	      abort ();
+	    }
+	  break;
+	case CLASS_DISP:
+	  switch (*p & ~CLASS_MASK)
+	    {
+	    case ARG_DISP16:
+	      nibs += 4;
+	      break;
+	    case ARG_DISP12:
+	      nibs += 3;
+	      break;
+	    case ARG_DISP8:
+	      nibs += 2;
+	      break;
+	    default:
+	      abort ();
+	    }
+	  break;
+	case CLASS_0DISP7:
+	case CLASS_1DISP7:
+	case CLASS_DISP8:
+	  nibs += 2;
+	  break;
+	case CLASS_BIT_1OR2:
+	case CLASS_0CCC:
+	case CLASS_1CCC:
+	case CLASS_CC:
+	  nibs++;
+	  break;
+	default:
+	  emit ("don't know %x\n", *p);
+	}
+      p++;
+    }
+
+  return nibs / 4;		/* return umber of words */
+}