From: Ben Elliston <bje@au.ibm.com>
Date: Fri, 4 Aug 2000 02:21:43 +0000 (+0000)
Subject: 2000-08-04  Ben Elliston  <bje@redhat.com>
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f6e6b40ff59365e1c8698764eea9fd1818bdb02a;p=binutils-gdb.git

2000-08-04  Ben Elliston  <bje@redhat.com>

	* cgen-dis.in, cgen-asm.in, cgen-ibld.in: New files.
	* cgen.sh: Likewise.
---

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index d4af2a2395f..574d60d3e7b 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,8 @@
+2000-08-04  Ben Elliston  <bje@redhat.com>
+
+	* cgen-dis.in, cgen-asm.in, cgen-ibld.in: New files.
+	* cgen.sh: Likewise.
+
 2000-08-02  Jim Wilson  <wilson@cygnus.com>
 	
 	* ia64-dis.c (print_insn_ia64): Call ia64_free_opcode at end.
diff --git a/opcodes/cgen-asm.in b/opcodes/cgen-asm.in
new file mode 100644
index 00000000000..8abd8dea551
--- /dev/null
+++ b/opcodes/cgen-asm.in
@@ -0,0 +1,309 @@
+/* Assembler interface for targets using CGEN. -*- C -*-
+   CGEN: Cpu tools GENerator
+
+THIS FILE IS MACHINE GENERATED WITH CGEN.
+- the resultant file is machine generated, cgen-asm.in isn't
+
+Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+
+This file is part of the GNU Binutils and GDB, the GNU debugger.
+
+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, 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.  */
+
+/* ??? Eventually more and more of this stuff can go to cpu-independent files.
+   Keep that in mind.  */
+
+#include "sysdep.h"
+#include <ctype.h>
+#include <stdio.h>
+#include "ansidecl.h"
+#include "bfd.h"
+#include "symcat.h"
+#include "@prefix@-desc.h"
+#include "@prefix@-opc.h"
+#include "opintl.h"
+
+#undef min
+#define min(a,b) ((a) < (b) ? (a) : (b))
+#undef max
+#define max(a,b) ((a) > (b) ? (a) : (b))
+
+static const char * parse_insn_normal
+     PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *));
+
+/* -- assembler routines inserted here */
+
+/* Default insn parser.
+
+   The syntax string is scanned and operands are parsed and stored in FIELDS.
+   Relocs are queued as we go via other callbacks.
+
+   ??? Note that this is currently an all-or-nothing parser.  If we fail to
+   parse the instruction, we return 0 and the caller will start over from
+   the beginning.  Backtracking will be necessary in parsing subexpressions,
+   but that can be handled there.  Not handling backtracking here may get
+   expensive in the case of the m68k.  Deal with later.
+
+   Returns NULL for success, an error message for failure.
+*/
+
+static const char *
+parse_insn_normal (cd, insn, strp, fields)
+     CGEN_CPU_DESC cd;
+     const CGEN_INSN *insn;
+     const char **strp;
+     CGEN_FIELDS *fields;
+{
+  /* ??? Runtime added insns not handled yet.  */
+  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
+  const char *str = *strp;
+  const char *errmsg;
+  const char *p;
+  const unsigned char * syn;
+#ifdef CGEN_MNEMONIC_OPERANDS
+  /* FIXME: wip */
+  int past_opcode_p;
+#endif
+
+  /* For now we assume the mnemonic is first (there are no leading operands).
+     We can parse it without needing to set up operand parsing.
+     GAS's input scrubber will ensure mnemonics are lowercase, but we may
+     not be called from GAS.  */
+  p = CGEN_INSN_MNEMONIC (insn);
+  while (*p && tolower (*p) == tolower (*str))
+    ++p, ++str;
+
+  if (* p)
+    return _("unrecognized instruction");
+
+#ifndef CGEN_MNEMONIC_OPERANDS
+  if (* str && !isspace (* str))
+    return _("unrecognized instruction");
+#endif
+
+  CGEN_INIT_PARSE (cd);
+  cgen_init_parse_operand (cd);
+#ifdef CGEN_MNEMONIC_OPERANDS
+  past_opcode_p = 0;
+#endif
+
+  /* We don't check for (*str != '\0') here because we want to parse
+     any trailing fake arguments in the syntax string.  */
+  syn = CGEN_SYNTAX_STRING (syntax);
+
+  /* Mnemonics come first for now, ensure valid string.  */
+  if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
+    abort ();
+
+  ++syn;
+
+  while (* syn != 0)
+    {
+      /* Non operand chars must match exactly.  */
+      if (CGEN_SYNTAX_CHAR_P (* syn))
+	{
+	  /* FIXME: While we allow for non-GAS callers above, we assume the
+	     first char after the mnemonic part is a space.  */
+	  /* FIXME: We also take inappropriate advantage of the fact that
+	     GAS's input scrubber will remove extraneous blanks.  */
+	  if (tolower (*str) == tolower (CGEN_SYNTAX_CHAR (* syn)))
+	    {
+#ifdef CGEN_MNEMONIC_OPERANDS
+	      if (* syn == ' ')
+		past_opcode_p = 1;
+#endif
+	      ++ syn;
+	      ++ str;
+	    }
+	  else
+	    {
+	      /* Syntax char didn't match.  Can't be this insn.  */
+	      static char msg [80];
+	      /* xgettext:c-format */
+	      sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
+		       *syn, *str);
+	      return msg;
+	    }
+	  continue;
+	}
+
+      /* We have an operand of some sort.  */
+      errmsg = @arch@_cgen_parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
+					  &str, fields);
+      if (errmsg)
+	return errmsg;
+
+      /* Done with this operand, continue with next one.  */
+      ++ syn;
+    }
+
+  /* If we're at the end of the syntax string, we're done.  */
+  if (* syn == '\0')
+    {
+      /* FIXME: For the moment we assume a valid `str' can only contain
+	 blanks now.  IE: We needn't try again with a longer version of
+	 the insn and it is assumed that longer versions of insns appear
+	 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3).  */
+      while (isspace (* str))
+	++ str;
+
+      if (* str != '\0')
+	return _("junk at end of line"); /* FIXME: would like to include `str' */
+
+      return NULL;
+    }
+
+  /* We couldn't parse it.  */
+  return _("unrecognized instruction");
+}
+
+/* Main entry point.
+   This routine is called for each instruction to be assembled.
+   STR points to the insn to be assembled.
+   We assume all necessary tables have been initialized.
+   The assembled instruction, less any fixups, is stored in BUF.
+   Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
+   still needs to be converted to target byte order, otherwise BUF is an array
+   of bytes in target byte order.
+   The result is a pointer to the insn's entry in the opcode table,
+   or NULL if an error occured (an error message will have already been
+   printed).
+
+   Note that when processing (non-alias) macro-insns,
+   this function recurses.
+
+   ??? It's possible to make this cpu-independent.
+   One would have to deal with a few minor things.
+   At this point in time doing so would be more of a curiosity than useful
+   [for example this file isn't _that_ big], but keeping the possibility in
+   mind helps keep the design clean.  */
+
+const CGEN_INSN *
+@arch@_cgen_assemble_insn (cd, str, fields, buf, errmsg)
+     CGEN_CPU_DESC cd;
+     const char *str;
+     CGEN_FIELDS *fields;
+     CGEN_INSN_BYTES_PTR buf;
+     char **errmsg;
+{
+  const char *start;
+  CGEN_INSN_LIST *ilist;
+  const char *tmp_errmsg = NULL;
+
+  /* Skip leading white space.  */
+  while (isspace (* str))
+    ++ str;
+
+  /* The instructions are stored in hashed lists.
+     Get the first in the list.  */
+  ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
+
+  /* Keep looking until we find a match.  */
+
+  start = str;
+  for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
+    {
+      const CGEN_INSN *insn = ilist->insn;
+
+#ifdef CGEN_VALIDATE_INSN_SUPPORTED 
+      /* not usually needed as unsupported opcodes shouldn't be in the hash lists */
+      /* Is this insn supported by the selected cpu?  */
+      if (! @arch@_cgen_insn_supported (cd, insn))
+	continue;
+#endif
+
+      /* If the RELAX attribute is set, this is an insn that shouldn't be
+	 chosen immediately.  Instead, it is used during assembler/linker
+	 relaxation if possible.  */
+      if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAX) != 0)
+	continue;
+
+      str = start;
+
+      /* Allow parse/insert handlers to obtain length of insn.  */
+      CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
+
+      tmp_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
+      if (tmp_errmsg != NULL)
+	continue;
+
+      /* ??? 0 is passed for `pc' */
+      tmp_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
+					      (bfd_vma) 0);
+      if (tmp_errmsg != NULL)
+        continue;
+
+      /* It is up to the caller to actually output the insn and any
+         queued relocs.  */
+      return insn;
+    }
+
+  /* Make sure we leave this with something at this point. */
+  if (tmp_errmsg == NULL)
+    tmp_errmsg = "unknown mnemonic";
+
+  {
+    static char errbuf[150];
+
+#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
+    /* if verbose error messages, use errmsg from CGEN_PARSE_FN */
+    if (strlen (start) > 50)
+      /* xgettext:c-format */
+      sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
+    else 
+      /* xgettext:c-format */
+      sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
+#else
+    if (strlen (start) > 50)
+      /* xgettext:c-format */
+      sprintf (errbuf, _("bad instruction `%.50s...'"), start);
+    else 
+      /* xgettext:c-format */
+      sprintf (errbuf, _("bad instruction `%.50s'"), start);
+#endif
+      
+    *errmsg = errbuf;
+    return NULL;
+  }
+}
+
+#if 0 /* This calls back to GAS which we can't do without care.  */
+
+/* Record each member of OPVALS in the assembler's symbol table.
+   This lets GAS parse registers for us.
+   ??? Interesting idea but not currently used.  */
+
+/* Record each member of OPVALS in the assembler's symbol table.
+   FIXME: Not currently used.  */
+
+void
+@arch@_cgen_asm_hash_keywords (cd, opvals)
+     CGEN_CPU_DESC cd;
+     CGEN_KEYWORD *opvals;
+{
+  CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL);
+  const CGEN_KEYWORD_ENTRY * ke;
+
+  while ((ke = cgen_keyword_search_next (& search)) != NULL)
+    {
+#if 0 /* Unnecessary, should be done in the search routine.  */
+      if (! @arch@_cgen_opval_supported (ke))
+	continue;
+#endif
+      cgen_asm_record_register (cd, ke->name, ke->value);
+    }
+}
+
+#endif /* 0 */
diff --git a/opcodes/cgen-dis.in b/opcodes/cgen-dis.in
new file mode 100644
index 00000000000..4b3faf96a57
--- /dev/null
+++ b/opcodes/cgen-dis.in
@@ -0,0 +1,388 @@
+/* Disassembler interface for targets using CGEN. -*- C -*-
+   CGEN: Cpu tools GENerator
+
+THIS FILE IS MACHINE GENERATED WITH CGEN.
+- the resultant file is machine generated, cgen-dis.in isn't
+
+Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+
+This file is part of the GNU Binutils and GDB, the GNU debugger.
+
+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, 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.  */
+
+/* ??? Eventually more and more of this stuff can go to cpu-independent files.
+   Keep that in mind.  */
+
+#include "sysdep.h"
+#include <stdio.h>
+#include "ansidecl.h"
+#include "dis-asm.h"
+#include "bfd.h"
+#include "symcat.h"
+#include "@prefix@-desc.h"
+#include "@prefix@-opc.h"
+#include "opintl.h"
+
+/* Default text to print if an instruction isn't recognized.  */
+#define UNKNOWN_INSN_MSG _("*unknown*")
+
+static void print_normal
+     PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned int, bfd_vma, int));
+static void print_address
+     PARAMS ((CGEN_CPU_DESC, PTR, bfd_vma, unsigned int, bfd_vma, int));
+static void print_keyword
+     PARAMS ((CGEN_CPU_DESC, PTR, CGEN_KEYWORD *, long, unsigned int));
+static void print_insn_normal
+     PARAMS ((CGEN_CPU_DESC, PTR, const CGEN_INSN *, CGEN_FIELDS *,
+	      bfd_vma, int));
+static int print_insn PARAMS ((CGEN_CPU_DESC, bfd_vma,
+			       disassemble_info *, char *, int));
+static int default_print_insn
+     PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *));
+
+/* -- disassembler routines inserted here */
+
+/* Default print handler.  */
+
+static void
+print_normal (cd, dis_info, value, attrs, pc, length)
+#ifdef CGEN_PRINT_NORMAL
+     CGEN_CPU_DESC cd;
+#else
+     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
+#endif
+     PTR dis_info;
+     long value;
+     unsigned int attrs;
+#ifdef CGEN_PRINT_NORMAL
+     bfd_vma pc;
+     int length;
+#else
+     bfd_vma pc ATTRIBUTE_UNUSED;
+     int length ATTRIBUTE_UNUSED;
+#endif
+{
+  disassemble_info *info = (disassemble_info *) dis_info;
+
+#ifdef CGEN_PRINT_NORMAL
+  CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
+#endif
+
+  /* Print the operand as directed by the attributes.  */
+  if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
+    ; /* nothing to do */
+  else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
+    (*info->fprintf_func) (info->stream, "%ld", value);
+  else
+    (*info->fprintf_func) (info->stream, "0x%lx", value);
+}
+
+/* Default address handler.  */
+
+static void
+print_address (cd, dis_info, value, attrs, pc, length)
+#ifdef CGEN_PRINT_NORMAL
+     CGEN_CPU_DESC cd;
+#else
+     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
+#endif
+     PTR dis_info;
+     bfd_vma value;
+     unsigned int attrs;
+#ifdef CGEN_PRINT_NORMAL
+     bfd_vma pc;
+     int length;
+#else
+     bfd_vma pc ATTRIBUTE_UNUSED;
+     int length ATTRIBUTE_UNUSED;
+#endif
+{
+  disassemble_info *info = (disassemble_info *) dis_info;
+
+#ifdef CGEN_PRINT_ADDRESS
+  CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
+#endif
+
+  /* Print the operand as directed by the attributes.  */
+  if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
+    ; /* nothing to do */
+  else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
+    (*info->print_address_func) (value, info);
+  else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
+    (*info->print_address_func) (value, info);
+  else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
+    (*info->fprintf_func) (info->stream, "%ld", (long) value);
+  else
+    (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
+}
+
+/* Keyword print handler.  */
+
+static void
+print_keyword (cd, dis_info, keyword_table, value, attrs)
+     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
+     PTR dis_info;
+     CGEN_KEYWORD *keyword_table;
+     long value;
+     unsigned int attrs ATTRIBUTE_UNUSED;
+{
+  disassemble_info *info = (disassemble_info *) dis_info;
+  const CGEN_KEYWORD_ENTRY *ke;
+
+  ke = cgen_keyword_lookup_value (keyword_table, value);
+  if (ke != NULL)
+    (*info->fprintf_func) (info->stream, "%s", ke->name);
+  else
+    (*info->fprintf_func) (info->stream, "???");
+}
+
+/* Default insn printer.
+
+   DIS_INFO is defined as `PTR' so the disassembler needn't know anything
+   about disassemble_info.  */
+
+static void
+print_insn_normal (cd, dis_info, insn, fields, pc, length)
+     CGEN_CPU_DESC cd;
+     PTR dis_info;
+     const CGEN_INSN *insn;
+     CGEN_FIELDS *fields;
+     bfd_vma pc;
+     int length;
+{
+  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
+  disassemble_info *info = (disassemble_info *) dis_info;
+  const unsigned char *syn;
+
+  CGEN_INIT_PRINT (cd);
+
+  for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
+    {
+      if (CGEN_SYNTAX_MNEMONIC_P (*syn))
+	{
+	  (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
+	  continue;
+	}
+      if (CGEN_SYNTAX_CHAR_P (*syn))
+	{
+	  (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
+	  continue;
+	}
+
+      /* We have an operand.  */
+      @arch@_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
+				 fields, CGEN_INSN_ATTRS (insn), pc, length);
+    }
+}
+
+/* Utility to print an insn.
+   BUF is the base part of the insn, target byte order, BUFLEN bytes long.
+   The result is the size of the insn in bytes or zero for an unknown insn
+   or -1 if an error occurs fetching data (memory_error_func will have
+   been called).  */
+
+static int
+print_insn (cd, pc, info, buf, buflen)
+     CGEN_CPU_DESC cd;
+     bfd_vma pc;
+     disassemble_info *info;
+     char *buf;
+     int buflen;
+{
+  unsigned long insn_value;
+  const CGEN_INSN_LIST *insn_list;
+  CGEN_EXTRACT_INFO ex_info;
+
+  ex_info.dis_info = info;
+  ex_info.valid = (1 << (cd->base_insn_bitsize / 8)) - 1;
+  ex_info.insn_bytes = buf;
+
+  switch (buflen)
+    {
+    case 1:
+      insn_value = buf[0];
+      break;
+    case 2:
+      insn_value = info->endian == BFD_ENDIAN_BIG ? bfd_getb16 (buf) : bfd_getl16 (buf);
+      break;
+    case 4:
+      insn_value = info->endian == BFD_ENDIAN_BIG ? bfd_getb32 (buf) : bfd_getl32 (buf);
+      break;
+    default:
+      abort ();
+    }
+
+  /* The instructions are stored in hash lists.
+     Pick the first one and keep trying until we find the right one.  */
+
+  insn_list = CGEN_DIS_LOOKUP_INSN (cd, buf, insn_value);
+  while (insn_list != NULL)
+    {
+      const CGEN_INSN *insn = insn_list->insn;
+      CGEN_FIELDS fields;
+      int length;
+
+#ifdef CGEN_VALIDATE_INSN_SUPPORTED 
+      /* not needed as insn shouldn't be in hash lists if not supported */
+      /* Supported by this cpu?  */
+      if (! @arch@_cgen_insn_supported (cd, insn))
+        {
+          insn_list = CGEN_DIS_NEXT_INSN (insn_list);
+	  continue;
+        }
+#endif
+
+      /* Basic bit mask must be correct.  */
+      /* ??? May wish to allow target to defer this check until the extract
+	 handler.  */
+      if ((insn_value & CGEN_INSN_BASE_MASK (insn))
+	  == CGEN_INSN_BASE_VALUE (insn))
+	{
+	  /* Printing is handled in two passes.  The first pass parses the
+	     machine insn and extracts the fields.  The second pass prints
+	     them.  */
+
+	  length = CGEN_EXTRACT_FN (cd, insn)
+	    (cd, insn, &ex_info, insn_value, &fields, pc);
+	  /* length < 0 -> error */
+	  if (length < 0)
+	    return length;
+	  if (length > 0)
+	    {
+	      CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
+	      /* length is in bits, result is in bytes */
+	      return length / 8;
+	    }
+	}
+
+      insn_list = CGEN_DIS_NEXT_INSN (insn_list);
+    }
+
+  return 0;
+}
+
+/* Default value for CGEN_PRINT_INSN.
+   The result is the size of the insn in bytes or zero for an unknown insn
+   or -1 if an error occured fetching bytes.  */
+
+#ifndef CGEN_PRINT_INSN
+#define CGEN_PRINT_INSN default_print_insn
+#endif
+
+static int
+default_print_insn (cd, pc, info)
+     CGEN_CPU_DESC cd;
+     bfd_vma pc;
+     disassemble_info *info;
+{
+  char buf[CGEN_MAX_INSN_SIZE];
+  int status;
+
+  /* Read the base part of the insn.  */
+
+  status = (*info->read_memory_func) (pc, buf, cd->base_insn_bitsize / 8, info);
+  if (status != 0)
+    {
+      (*info->memory_error_func) (status, pc, info);
+      return -1;
+    }
+
+  return print_insn (cd, pc, info, buf, cd->base_insn_bitsize / 8);
+}
+
+/* Main entry point.
+   Print one instruction from PC on INFO->STREAM.
+   Return the size of the instruction (in bytes).  */
+
+int
+print_insn_@arch@ (pc, info)
+     bfd_vma pc;
+     disassemble_info *info;
+{
+  static CGEN_CPU_DESC cd = 0;
+  static int prev_isa;
+  static int prev_mach;
+  static int prev_endian;
+  int length;
+  int isa,mach;
+  int endian = (info->endian == BFD_ENDIAN_BIG
+		? CGEN_ENDIAN_BIG
+		: CGEN_ENDIAN_LITTLE);
+  enum bfd_architecture arch;
+
+  /* ??? gdb will set mach but leave the architecture as "unknown" */
+#ifndef CGEN_BFD_ARCH
+#define CGEN_BFD_ARCH bfd_arch_@arch@
+#endif
+  arch = info->arch;
+  if (arch == bfd_arch_unknown)
+    arch = CGEN_BFD_ARCH;
+      
+  /* There's no standard way to compute the isa number (e.g. for arm thumb)
+     so we leave it to the target.  */
+#ifdef CGEN_COMPUTE_ISA
+  isa = CGEN_COMPUTE_ISA (info);
+#else
+  isa = 0;
+#endif
+
+  mach = info->mach;
+
+  /* If we've switched cpu's, close the current table and open a new one.  */
+  if (cd
+      && (isa != prev_isa
+	  || mach != prev_mach
+	  || endian != prev_endian))
+    {
+      @arch@_cgen_cpu_close (cd);
+      cd = 0;
+    }
+
+  /* If we haven't initialized yet, initialize the opcode table.  */
+  if (! cd)
+    {
+      const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
+      const char *mach_name;
+
+      if (!arch_type)
+	abort ();
+      mach_name = arch_type->printable_name;
+
+      prev_isa = isa;
+      prev_mach = mach;
+      prev_endian = endian;
+      cd = @arch@_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
+				 CGEN_CPU_OPEN_BFDMACH, mach_name,
+				 CGEN_CPU_OPEN_ENDIAN, prev_endian,
+				 CGEN_CPU_OPEN_END);
+      if (!cd)
+	abort ();
+      @arch@_cgen_init_dis (cd);
+    }
+
+  /* We try to have as much common code as possible.
+     But at this point some targets need to take over.  */
+  /* ??? Some targets may need a hook elsewhere.  Try to avoid this,
+     but if not possible try to move this hook elsewhere rather than
+     have two hooks.  */
+  length = CGEN_PRINT_INSN (cd, pc, info);
+  if (length > 0)
+    return length;
+  if (length < 0)
+    return -1;
+
+  (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
+  return cd->default_insn_bitsize / 8;
+}
diff --git a/opcodes/cgen-ibld.in b/opcodes/cgen-ibld.in
new file mode 100644
index 00000000000..6394fe06227
--- /dev/null
+++ b/opcodes/cgen-ibld.in
@@ -0,0 +1,570 @@
+/* Instruction building/extraction support for @arch@. -*- C -*-
+
+THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
+- the resultant file is machine generated, cgen-ibld.in isn't
+
+Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+
+This file is part of the GNU Binutils and GDB, the GNU debugger.
+
+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, 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.  */
+
+/* ??? Eventually more and more of this stuff can go to cpu-independent files.
+   Keep that in mind.  */
+
+#include "sysdep.h"
+#include <ctype.h>
+#include <stdio.h>
+#include "ansidecl.h"
+#include "dis-asm.h"
+#include "bfd.h"
+#include "symcat.h"
+#include "@prefix@-desc.h"
+#include "@prefix@-opc.h"
+#include "opintl.h"
+
+#undef min
+#define min(a,b) ((a) < (b) ? (a) : (b))
+#undef max
+#define max(a,b) ((a) > (b) ? (a) : (b))
+
+/* Used by the ifield rtx function.  */
+#define FLD(f) (fields->f)
+
+static const char * insert_normal
+     PARAMS ((CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,
+	      unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR));
+static const char * insert_insn_normal
+     PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *,
+	      CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma));
+
+static int extract_normal
+     PARAMS ((CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,
+	      unsigned int, unsigned int, unsigned int, unsigned int,
+	      unsigned int, unsigned int, bfd_vma, long *));
+static int extract_insn_normal
+     PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,
+	      CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma));
+
+/* Operand insertion.  */
+
+#if ! CGEN_INT_INSN_P
+
+/* Subroutine of insert_normal.  */
+
+static CGEN_INLINE void
+insert_1 (cd, value, start, length, word_length, bufp)
+     CGEN_CPU_DESC cd;
+     unsigned long value;
+     int start,length,word_length;
+     unsigned char *bufp;
+{
+  unsigned long x,mask;
+  int shift;
+  int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG;
+
+  switch (word_length)
+    {
+    case 8:
+      x = *bufp;
+      break;
+    case 16:
+      if (big_p)
+	x = bfd_getb16 (bufp);
+      else
+	x = bfd_getl16 (bufp);
+      break;
+    case 24:
+      /* ??? This may need reworking as these cases don't necessarily
+	 want the first byte and the last two bytes handled like this.  */
+      if (big_p)
+	x = (bufp[0] << 16) | bfd_getb16 (bufp + 1);
+      else
+	x = bfd_getl16 (bufp) | (bufp[2] << 16);
+      break;
+    case 32:
+      if (big_p)
+	x = bfd_getb32 (bufp);
+      else
+	x = bfd_getl32 (bufp);
+      break;
+    default :
+      abort ();
+    }
+
+  /* Written this way to avoid undefined behaviour.  */
+  mask = (((1L << (length - 1)) - 1) << 1) | 1;
+  if (CGEN_INSN_LSB0_P)
+    shift = (start + 1) - length;
+  else
+    shift = (word_length - (start + length));
+  x = (x & ~(mask << shift)) | ((value & mask) << shift);
+
+  switch (word_length)
+    {
+    case 8:
+      *bufp = x;
+      break;
+    case 16:
+      if (big_p)
+	bfd_putb16 (x, bufp);
+      else
+	bfd_putl16 (x, bufp);
+      break;
+    case 24:
+      /* ??? This may need reworking as these cases don't necessarily
+	 want the first byte and the last two bytes handled like this.  */
+      if (big_p)
+	{
+	  bufp[0] = x >> 16;
+	  bfd_putb16 (x, bufp + 1);
+	}
+      else
+	{
+	  bfd_putl16 (x, bufp);
+	  bufp[2] = x >> 16;
+	}
+      break;
+    case 32:
+      if (big_p)
+	bfd_putb32 (x, bufp);
+      else
+	bfd_putl32 (x, bufp);
+      break;
+    default :
+      abort ();
+    }
+}
+
+#endif /* ! CGEN_INT_INSN_P */
+
+/* Default insertion routine.
+
+   ATTRS is a mask of the boolean attributes.
+   WORD_OFFSET is the offset in bits from the start of the insn of the value.
+   WORD_LENGTH is the length of the word in bits in which the value resides.
+   START is the starting bit number in the word, architecture origin.
+   LENGTH is the length of VALUE in bits.
+   TOTAL_LENGTH is the total length of the insn in bits.
+
+   The result is an error message or NULL if success.  */
+
+/* ??? This duplicates functionality with bfd's howto table and
+   bfd_install_relocation.  */
+/* ??? This doesn't handle bfd_vma's.  Create another function when
+   necessary.  */
+
+static const char *
+insert_normal (cd, value, attrs, word_offset, start, length, word_length,
+	       total_length, buffer)
+     CGEN_CPU_DESC cd;
+     long value;
+     unsigned int attrs;
+     unsigned int word_offset, start, length, word_length, total_length;
+     CGEN_INSN_BYTES_PTR buffer;
+{
+  static char errbuf[100];
+  /* Written this way to avoid undefined behaviour.  */
+  unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;
+
+  /* If LENGTH is zero, this operand doesn't contribute to the value.  */
+  if (length == 0)
+    return NULL;
+
+  if (CGEN_INT_INSN_P
+      && word_offset != 0)
+    abort ();
+
+  if (word_length > 32)
+    abort ();
+
+  /* For architectures with insns smaller than the base-insn-bitsize,
+     word_length may be too big.  */
+  if (cd->min_insn_bitsize < cd->base_insn_bitsize)
+    {
+      if (word_offset == 0
+	  && word_length > total_length)
+	word_length = total_length;
+    }
+
+  /* Ensure VALUE will fit.  */
+  if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))
+    {
+      unsigned long maxval = mask;
+      
+      if ((unsigned long) value > maxval)
+	{
+	  /* xgettext:c-format */
+	  sprintf (errbuf,
+		   _("operand out of range (%lu not between 0 and %lu)"),
+		   value, maxval);
+	  return errbuf;
+	}
+    }
+  else
+    {
+      if (! cgen_signed_overflow_ok_p (cd))
+	{
+	  long minval = - (1L << (length - 1));
+	  long maxval =   (1L << (length - 1)) - 1;
+	  
+	  if (value < minval || value > maxval)
+	    {
+	      sprintf
+		/* xgettext:c-format */
+		(errbuf, _("operand out of range (%ld not between %ld and %ld)"),
+		 value, minval, maxval);
+	      return errbuf;
+	    }
+	}
+    }
+
+#if CGEN_INT_INSN_P
+
+  {
+    int shift;
+
+    if (CGEN_INSN_LSB0_P)
+      shift = (start + 1) - length;
+    else
+      shift = word_length - (start + length);
+    *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
+  }
+
+#else /* ! CGEN_INT_INSN_P */
+
+  {
+    unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;
+
+    insert_1 (cd, value, start, length, word_length, bufp);
+  }
+
+#endif /* ! CGEN_INT_INSN_P */
+
+  return NULL;
+}
+
+/* Default insn builder (insert handler).
+   The instruction is recorded in CGEN_INT_INSN_P byte order
+   (meaning that if CGEN_INT_INSN_P BUFFER is an int * and thus the value is
+   recorded in host byte order, otherwise BUFFER is an array of bytes and the
+   value is recorded in target byte order).
+   The result is an error message or NULL if success.  */
+
+static const char *
+insert_insn_normal (cd, insn, fields, buffer, pc)
+     CGEN_CPU_DESC cd;
+     const CGEN_INSN * insn;
+     CGEN_FIELDS * fields;
+     CGEN_INSN_BYTES_PTR buffer;
+     bfd_vma pc;
+{
+  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
+  unsigned long value;
+  const unsigned char * syn;
+
+  CGEN_INIT_INSERT (cd);
+  value = CGEN_INSN_BASE_VALUE (insn);
+
+  /* If we're recording insns as numbers (rather than a string of bytes),
+     target byte order handling is deferred until later.  */
+
+#if CGEN_INT_INSN_P
+
+  *buffer = value;
+
+#else
+
+  cgen_put_insn_value (cd, buffer, min (cd->base_insn_bitsize,
+					CGEN_FIELDS_BITSIZE (fields)),
+		       value);
+
+#endif /* ! CGEN_INT_INSN_P */
+
+  /* ??? It would be better to scan the format's fields.
+     Still need to be able to insert a value based on the operand though;
+     e.g. storing a branch displacement that got resolved later.
+     Needs more thought first.  */
+
+  for (syn = CGEN_SYNTAX_STRING (syntax); * syn != '\0'; ++ syn)
+    {
+      const char *errmsg;
+
+      if (CGEN_SYNTAX_CHAR_P (* syn))
+	continue;
+
+      errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
+				       fields, buffer, pc);
+      if (errmsg)
+	return errmsg;
+    }
+
+  return NULL;
+}
+
+/* Operand extraction.  */
+
+#if ! CGEN_INT_INSN_P
+
+/* Subroutine of extract_normal.
+   Ensure sufficient bytes are cached in EX_INFO.
+   OFFSET is the offset in bytes from the start of the insn of the value.
+   BYTES is the length of the needed value.
+   Returns 1 for success, 0 for failure.  */
+
+static CGEN_INLINE int
+fill_cache (cd, ex_info, offset, bytes, pc)
+     CGEN_CPU_DESC cd;
+     CGEN_EXTRACT_INFO *ex_info;
+     int offset, bytes;
+     bfd_vma pc;
+{
+  /* It's doubtful that the middle part has already been fetched so
+     we don't optimize that case.  kiss.  */
+  int mask;
+  disassemble_info *info = (disassemble_info *) ex_info->dis_info;
+
+  /* First do a quick check.  */
+  mask = (1 << bytes) - 1;
+  if (((ex_info->valid >> offset) & mask) == mask)
+    return 1;
+
+  /* Search for the first byte we need to read.  */
+  for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
+    if (! (mask & ex_info->valid))
+      break;
+
+  if (bytes)
+    {
+      int status;
+
+      pc += offset;
+      status = (*info->read_memory_func)
+	(pc, ex_info->insn_bytes + offset, bytes, info);
+
+      if (status != 0)
+	{
+	  (*info->memory_error_func) (status, pc, info);
+	  return 0;
+	}
+
+      ex_info->valid |= ((1 << bytes) - 1) << offset;
+    }
+
+  return 1;
+}
+
+/* Subroutine of extract_normal.  */
+
+static CGEN_INLINE long
+extract_1 (cd, ex_info, start, length, word_length, bufp, pc)
+     CGEN_CPU_DESC cd;
+     CGEN_EXTRACT_INFO *ex_info;
+     int start,length,word_length;
+     unsigned char *bufp;
+     bfd_vma pc;
+{
+  unsigned long x,mask;
+  int shift;
+  int big_p = CGEN_CPU_INSN_ENDIAN (cd) == CGEN_ENDIAN_BIG;
+
+  switch (word_length)
+    {
+    case 8:
+      x = *bufp;
+      break;
+    case 16:
+      if (big_p)
+	x = bfd_getb16 (bufp);
+      else
+	x = bfd_getl16 (bufp);
+      break;
+    case 24:
+      /* ??? This may need reworking as these cases don't necessarily
+	 want the first byte and the last two bytes handled like this.  */
+      if (big_p)
+	x = (bufp[0] << 16) | bfd_getb16 (bufp + 1);
+      else
+	x = bfd_getl16 (bufp) | (bufp[2] << 16);
+      break;
+    case 32:
+      if (big_p)
+	x = bfd_getb32 (bufp);
+      else
+	x = bfd_getl32 (bufp);
+      break;
+    default :
+      abort ();
+    }
+
+  /* Written this way to avoid undefined behaviour.  */
+  mask = (((1L << (length - 1)) - 1) << 1) | 1;
+  if (CGEN_INSN_LSB0_P)
+    shift = (start + 1) - length;
+  else
+    shift = (word_length - (start + length));
+  return (x >> shift) & mask;
+}
+
+#endif /* ! CGEN_INT_INSN_P */
+
+/* Default extraction routine.
+
+   INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
+   or sometimes less for cases like the m32r where the base insn size is 32
+   but some insns are 16 bits.
+   ATTRS is a mask of the boolean attributes.  We only need `SIGNED',
+   but for generality we take a bitmask of all of them.
+   WORD_OFFSET is the offset in bits from the start of the insn of the value.
+   WORD_LENGTH is the length of the word in bits in which the value resides.
+   START is the starting bit number in the word, architecture origin.
+   LENGTH is the length of VALUE in bits.
+   TOTAL_LENGTH is the total length of the insn in bits.
+
+   Returns 1 for success, 0 for failure.  */
+
+/* ??? The return code isn't properly used.  wip.  */
+
+/* ??? This doesn't handle bfd_vma's.  Create another function when
+   necessary.  */
+
+static int
+extract_normal (cd, ex_info, insn_value, attrs, word_offset, start, length,
+		word_length, total_length, pc, valuep)
+     CGEN_CPU_DESC cd;
+#if ! CGEN_INT_INSN_P
+     CGEN_EXTRACT_INFO *ex_info;
+#else
+     CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED;
+#endif
+     CGEN_INSN_INT insn_value;
+     unsigned int attrs;
+     unsigned int word_offset, start, length, word_length, total_length;
+#if ! CGEN_INT_INSN_P
+     bfd_vma pc;
+#else
+     bfd_vma pc ATTRIBUTE_UNUSED;
+#endif
+     long *valuep;
+{
+  CGEN_INSN_INT value;
+
+  /* If LENGTH is zero, this operand doesn't contribute to the value
+     so give it a standard value of zero.  */
+  if (length == 0)
+    {
+      *valuep = 0;
+      return 1;
+    }
+
+  if (CGEN_INT_INSN_P
+      && word_offset != 0)
+    abort ();
+
+  if (word_length > 32)
+    abort ();
+
+  /* For architectures with insns smaller than the insn-base-bitsize,
+     word_length may be too big.  */
+  if (cd->min_insn_bitsize < cd->base_insn_bitsize)
+    {
+      if (word_offset == 0
+	  && word_length > total_length)
+	word_length = total_length;
+    }
+
+  /* Does the value reside in INSN_VALUE?  */
+
+  if (word_offset == 0)
+    {
+      /* Written this way to avoid undefined behaviour.  */
+      CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
+
+      if (CGEN_INSN_LSB0_P)
+	value = insn_value >> ((start + 1) - length);
+      else
+	value = insn_value >> (word_length - (start + length));
+      value &= mask;
+      /* sign extend? */
+      if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
+	  && (value & (1L << (length - 1))))
+	value |= ~mask;
+    }
+
+#if ! CGEN_INT_INSN_P
+
+  else
+    {
+      unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
+
+      if (word_length > 32)
+	abort ();
+
+      if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
+	return 0;
+
+      value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
+    }
+
+#endif /* ! CGEN_INT_INSN_P */
+
+  *valuep = value;
+
+  return 1;
+}
+
+/* Default insn extractor.
+
+   INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
+   The extracted fields are stored in FIELDS.
+   EX_INFO is used to handle reading variable length insns.
+   Return the length of the insn in bits, or 0 if no match,
+   or -1 if an error occurs fetching data (memory_error_func will have
+   been called).  */
+
+static int
+extract_insn_normal (cd, insn, ex_info, insn_value, fields, pc)
+     CGEN_CPU_DESC cd;
+     const CGEN_INSN *insn;
+     CGEN_EXTRACT_INFO *ex_info;
+     CGEN_INSN_INT insn_value;
+     CGEN_FIELDS *fields;
+     bfd_vma pc;
+{
+  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
+  const unsigned char *syn;
+
+  CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
+
+  CGEN_INIT_EXTRACT (cd);
+
+  for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
+    {
+      int length;
+
+      if (CGEN_SYNTAX_CHAR_P (*syn))
+	continue;
+
+      length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
+					ex_info, insn_value, fields, pc);
+      if (length <= 0)
+	return length;
+    }
+
+  /* We recognized and successfully extracted this insn.  */
+  return CGEN_INSN_BITSIZE (insn);
+}
+
+/* machine generated code added here */
diff --git a/opcodes/cgen.sh b/opcodes/cgen.sh
new file mode 100644
index 00000000000..8a4eb6b8a2b
--- /dev/null
+++ b/opcodes/cgen.sh
@@ -0,0 +1,134 @@
+#! /bin/sh
+# Generate CGEN opcode files: arch-desc.[ch], arch-opc.[ch],
+# arch-asm.c, arch-dis.c, arch-opinst.c, arch-ibld.[ch].
+#
+# Usage:
+# cgen.sh action srcdir cgen cgendir cgenflags arch prefix options
+#
+# ACTION is currently always "opcodes". It exists to be consistent with the 
+# simulator.
+# OPTIONS is comma separated list of options:
+#	- opinst - arch-opinst.c is being made, causes semantic analysis
+#
+# We store the generated files in the source directory until we decide to
+# ship a Scheme interpreter (or other implementation) with gdb/binutils.
+# Maybe we never will.
+
+# We want to behave like make, any error forces us to stop.
+set -e
+
+action=$1
+srcdir=$2
+cgen=$3
+cgendir=$4
+cgenflags=$5
+arch=$6
+prefix=$7
+options=$8
+
+# List of extra files to build.
+# Values: opinst (only 1 extra file at present)
+extrafiles=$9
+
+rootdir=${srcdir}/..
+
+# $arch is $6, as passed on the command line.
+# $ARCH is the same argument but in all uppercase.
+# Both forms are used in this script.
+
+lowercase='abcdefghijklmnopqrstuvwxyz'
+uppercase='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+ARCH=`echo ${arch} | tr "${lowercase}" "${uppercase}"`
+
+extrafile_args=""
+for ef in .. $extrafiles
+do
+    case $ef in
+    ..) ;;
+    opinst) extrafile_args="-Q tmp-opinst.c1 $extrafile_args" ;;
+    esac
+done
+
+case $action in
+opcodes)
+	# Remove residual working files.
+	rm -f tmp-desc.h tmp-desc.h1
+	rm -f tmp-desc.c tmp-desc.c1
+	rm -f tmp-opc.h tmp-opc.h1
+	rm -f tmp-opc.c tmp-opc.c1
+	rm -f tmp-opinst.c tmp-opinst.c1
+	rm -f tmp-ibld.h tmp-ibld.h1
+	rm -f tmp-ibld.c tmp-ibld.in1
+	rm -f tmp-asm.c tmp-asm.in1
+	rm -f tmp-dis.c tmp-dis.in1
+
+	# Run CGEN.
+	${cgen} -s ${cgendir}/cgen-opc.scm \
+		-s ${cgendir} \
+		${cgenflags} \
+		-f "${options}" \
+		-m all \
+		-a ${arch} \
+		-H tmp-desc.h1 \
+		-C tmp-desc.c1 \
+		-O tmp-opc.h1 \
+		-P tmp-opc.c1 \
+		-L tmp-ibld.in1 \
+		-A tmp-asm.in1 \
+		-D tmp-dis.in1 \
+		${extrafile_args}
+
+	# Customise generated files for the particular architecture.
+	sed -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" < tmp-desc.h1 > tmp-desc.h
+	${rootdir}/move-if-change tmp-desc.h ${srcdir}/${prefix}-desc.h
+
+	sed -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+		-e "s/@prefix@/${prefix}/" < tmp-desc.c1 > tmp-desc.c
+	${rootdir}/move-if-change tmp-desc.c ${srcdir}/${prefix}-desc.c
+
+	sed -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" < tmp-opc.h1 > tmp-opc.h
+	${rootdir}/move-if-change tmp-opc.h ${srcdir}/${prefix}-opc.h
+
+	sed -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+		-e "s/@prefix@/${prefix}/" < tmp-opc.c1 > tmp-opc.c
+	${rootdir}/move-if-change tmp-opc.c ${srcdir}/${prefix}-opc.c
+
+	case $extrafiles in
+	*opinst*)
+	  sed -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+		-e "s/@prefix@/${prefix}/" < tmp-opinst.c1 >tmp-opinst.c
+	  ${rootdir}/move-if-change tmp-opinst.c ${srcdir}/${prefix}-opinst.c
+	  ;;
+	esac
+
+	cat ${srcdir}/cgen-ibld.in tmp-ibld.in1 | \
+	  sed -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+		-e "s/@prefix@/${prefix}/" > tmp-ibld.c
+	${rootdir}/move-if-change tmp-ibld.c ${srcdir}/${prefix}-ibld.c
+
+	sed -e "/ -- assembler routines/ r tmp-asm.in1" ${srcdir}/cgen-asm.in \
+	  | sed -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+		-e "s/@prefix@/${prefix}/" > tmp-asm.c
+	${rootdir}/move-if-change tmp-asm.c ${srcdir}/${prefix}-asm.c
+
+	sed -e "/ -- disassembler routines/ r tmp-dis.in1" ${srcdir}/cgen-dis.in \
+	  | sed -e "s/@ARCH@/${ARCH}/g" -e "s/@arch@/${arch}/g" \
+		-e "s/@prefix@/${prefix}/" > tmp-dis.c
+	${rootdir}/move-if-change tmp-dis.c ${srcdir}/${prefix}-dis.c
+
+	# Remove temporary files.
+	rm -f tmp-desc.h1 tmp-desc.c1
+	rm -f tmp-opc.h1 tmp-opc.c1
+	rm -f tmp-opinst.c1
+	rm -f tmp-ibld.h1 tmp-ibld.in1
+	rm -f tmp-asm.in1 tmp-dis.in1
+	;;
+
+*)
+	echo "$0: bad action: ${action}" >&2
+	exit 1
+	;;
+
+esac
+
+exit 0