[thirdparty/binutils-gdb.git] / opcodes / xstormy16-asm.c

/* 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 1996, 1997, 1998, 1999, 2000, 2001 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 "bfd.h"
#include "symcat.h"
#include "xstormy16-desc.h"
#include "xstormy16-opc.h"
#include "opintl.h"
#include "xregex.h"
#include "libiberty.h"
#include "safe-ctype.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 *));
\f
/* -- assembler routines inserted here.  */

/* -- asm.c */
static const char * parse_mem8
  PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
static const char * parse_small_immediate
  PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));

/* The machine-independent code doesn't know how to disambiguate
     mov (foo),r3
   and
     mov (r2),r3
   where 'foo' is a label.  This helps it out. */

static const char *
parse_mem8 (cd, strp, opindex, valuep)
     CGEN_CPU_DESC cd;
     const char **strp;
     int opindex;
     unsigned long *valuep;
{
  if (**strp == '(')
    {
      const char *s = *strp;
      
      if (s[1] == '-' && s[2] == '-')
	return _("Bad register in preincrement");

      while (isalnum (*++s))
	;
      if (s[0] == '+' && s[1] == '+' && (s[2] == ')' || s[2] == ','))
	return _("Bad register in postincrement");
      if (s[0] == ',' || s[0] == ')')
	return _("Bad register name");
    }
  else if (cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, 
			       valuep) == NULL)
    return _("Label conflicts with register name");
  else if (strncasecmp (*strp, "rx,", 3) == 0
	   || strncasecmp (*strp, "rxl,", 3) == 0
	   || strncasecmp (*strp, "rxh,", 3) == 0)
    return _("Label conflicts with `Rx'");
  else if (**strp == '#')
    return _("Bad immediate expression");
  
  return cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
}

/* For the add and subtract instructions, there are two immediate forms,
   one for small operands and one for large ones.  We want to use
   the small one when possible, but we do not want to generate relocs
   of the small size.  This is somewhat tricky.  */
   
static const char *
parse_small_immediate (cd, strp, opindex, valuep)
     CGEN_CPU_DESC cd;
     const char **strp;
     int opindex;
     unsigned long *valuep;
{
  bfd_vma value;
  enum cgen_parse_operand_result result;
  const char *errmsg;

  errmsg = (* cd->parse_operand_fn)
    (cd, CGEN_PARSE_OPERAND_INTEGER, strp, opindex, BFD_RELOC_NONE,
     &result, &value);
  
  if (errmsg)
    return errmsg;

  if (result != CGEN_PARSE_OPERAND_RESULT_NUMBER)
    return _("Small operand was not an immediate number");

  *valuep = value;
  return NULL;
}
/* -- */

const char * xstormy16_cgen_parse_operand
  PARAMS ((CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *));

/* Main entry point for operand parsing.

   This function is basically just a big switch statement.  Earlier versions
   used tables to look up the function to use, but
   - if the table contains both assembler and disassembler functions then
     the disassembler contains much of the assembler and vice-versa,
   - there's a lot of inlining possibilities as things grow,
   - using a switch statement avoids the function call overhead.

   This function could be moved into `parse_insn_normal', but keeping it
   separate makes clear the interface between `parse_insn_normal' and each of
   the handlers.  */

const char *
xstormy16_cgen_parse_operand (cd, opindex, strp, fields)
     CGEN_CPU_DESC cd;
     int opindex;
     const char ** strp;
     CGEN_FIELDS * fields;
{
  const char * errmsg = NULL;
  /* Used by scalar operands that still need to be parsed.  */
  long junk ATTRIBUTE_UNUSED;

  switch (opindex)
    {
    case XSTORMY16_OPERAND_RB :
      errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rb);
      break;
    case XSTORMY16_OPERAND_RBJ :
      errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_Rbj_names, & fields->f_Rbj);
      break;
    case XSTORMY16_OPERAND_RD :
      errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rd);
      break;
    case XSTORMY16_OPERAND_RDM :
      errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rdm);
      break;
    case XSTORMY16_OPERAND_RM :
      errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rm);
      break;
    case XSTORMY16_OPERAND_RS :
      errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rs);
      break;
    case XSTORMY16_OPERAND_ABS24 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_ABS24, &fields->f_abs24);
      break;
    case XSTORMY16_OPERAND_BCOND2 :
      errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_branchcond, & fields->f_op2);
      break;
    case XSTORMY16_OPERAND_BCOND5 :
      errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_branchcond, & fields->f_op5);
      break;
    case XSTORMY16_OPERAND_HMEM8 :
      errmsg = parse_mem8 (cd, strp, XSTORMY16_OPERAND_HMEM8, &fields->f_hmem8);
      break;
    case XSTORMY16_OPERAND_IMM12 :
      errmsg = cgen_parse_signed_integer (cd, strp, XSTORMY16_OPERAND_IMM12, &fields->f_imm12);
      break;
    case XSTORMY16_OPERAND_IMM16 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM16, &fields->f_imm16);
      break;
    case XSTORMY16_OPERAND_IMM2 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM2, &fields->f_imm2);
      break;
    case XSTORMY16_OPERAND_IMM3 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM3, &fields->f_imm3);
      break;
    case XSTORMY16_OPERAND_IMM3B :
      errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM3B, &fields->f_imm3b);
      break;
    case XSTORMY16_OPERAND_IMM4 :
      errmsg = parse_small_immediate (cd, strp, XSTORMY16_OPERAND_IMM4, &fields->f_imm4);
      break;
    case XSTORMY16_OPERAND_IMM8 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM8, &fields->f_imm8);
      break;
    case XSTORMY16_OPERAND_IMM8SMALL :
      errmsg = parse_small_immediate (cd, strp, XSTORMY16_OPERAND_IMM8SMALL, &fields->f_imm8);
      break;
    case XSTORMY16_OPERAND_LMEM8 :
      errmsg = parse_mem8 (cd, strp, XSTORMY16_OPERAND_LMEM8, &fields->f_lmem8);
      break;
    case XSTORMY16_OPERAND_REL12 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL12, &fields->f_rel12);
      break;
    case XSTORMY16_OPERAND_REL12A :
      errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL12A, &fields->f_rel12a);
      break;
    case XSTORMY16_OPERAND_REL8_2 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL8_2, &fields->f_rel8_2);
      break;
    case XSTORMY16_OPERAND_REL8_4 :
      errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL8_4, &fields->f_rel8_4);
      break;
    case XSTORMY16_OPERAND_WS2 :
      errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_wordsize, & fields->f_op2m);
      break;

    default :
      /* xgettext:c-format */
      fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
      abort ();
  }

  return errmsg;
}

cgen_parse_fn * const xstormy16_cgen_parse_handlers[] = 
{
  parse_insn_normal,
};

void
xstormy16_cgen_init_asm (cd)
     CGEN_CPU_DESC cd;
{
  xstormy16_cgen_init_opcode_table (cd);
  xstormy16_cgen_init_ibld_table (cd);
  cd->parse_handlers = & xstormy16_cgen_parse_handlers[0];
  cd->parse_operand = xstormy16_cgen_parse_operand;
}

\f

/* Regex construction routine.

   This translates an opcode syntax string into a regex string,
   by replacing any non-character syntax element (such as an
   opcode) with the pattern '.*'

   It then compiles the regex and stores it in the opcode, for
   later use by xstormy16_cgen_assemble_insn

   Returns NULL for success, an error message for failure.  */

char * 
xstormy16_cgen_build_insn_regex (insn)
     CGEN_INSN *insn;
{  
  CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
  const char *mnem = CGEN_INSN_MNEMONIC (insn);
  char rxbuf[CGEN_MAX_RX_ELEMENTS];
  char *rx = rxbuf;
  const CGEN_SYNTAX_CHAR_TYPE *syn;
  int reg_err;

  syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));

  /* Mnemonics come first in the syntax string.  */
  if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
    return _("missing mnemonic in syntax string");
  ++syn;

  /* Generate a case sensitive regular expression that emulates case
     insensitive matching in the "C" locale.  We cannot generate a case
     insensitive regular expression because in Turkish locales, 'i' and 'I'
     are not equal modulo case conversion.  */

  /* Copy the literal mnemonic out of the insn.  */
  for (; *mnem; mnem++)
    {
      char c = *mnem;

      if (ISALPHA (c))
	{
	  *rx++ = '[';
	  *rx++ = TOLOWER (c);
	  *rx++ = TOUPPER (c);
	  *rx++ = ']';
	}
      else
	*rx++ = c;
    }

  /* Copy any remaining literals from the syntax string into the rx.  */
  for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
    {
      if (CGEN_SYNTAX_CHAR_P (* syn)) 
	{
	  char c = CGEN_SYNTAX_CHAR (* syn);

	  switch (c) 
	    {
	      /* Escape any regex metacharacters in the syntax.  */
	    case '.': case '[': case '\\': 
	    case '*': case '^': case '$': 

#ifdef CGEN_ESCAPE_EXTENDED_REGEX
	    case '?': case '{': case '}': 
	    case '(': case ')': case '*':
	    case '|': case '+': case ']':
#endif
	      *rx++ = '\\';
	      *rx++ = c;
	      break;

	    default:
	      if (ISALPHA (c))
		{
		  *rx++ = '[';
		  *rx++ = TOLOWER (c);
		  *rx++ = TOUPPER (c);
		  *rx++ = ']';
		}
	      else
		*rx++ = c;
	      break;
	    }
	}
      else
	{
	  /* Replace non-syntax fields with globs.  */
	  *rx++ = '.';
	  *rx++ = '*';
	}
    }

  /* Trailing whitespace ok.  */
  * rx++ = '['; 
  * rx++ = ' '; 
  * rx++ = '\t'; 
  * rx++ = ']'; 
  * rx++ = '*'; 

  /* But anchor it after that.  */
  * rx++ = '$'; 
  * rx = '\0';

  CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
  reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);

  if (reg_err == 0) 
    return NULL;
  else
    {
      static char msg[80];

      regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
      regfree ((regex_t *) CGEN_INSN_RX (insn));
      free (CGEN_INSN_RX (insn));
      (CGEN_INSN_RX (insn)) = NULL;
      return msg;
    }
}

\f
/* 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 CGEN_SYNTAX_CHAR_TYPE * 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 (CGEN_SYNTAX_CHAR(* syn) == ' ')
		past_opcode_p = 1;
#endif
	      ++ syn;
	      ++ str;
	    }
	  else if (*str)
	    {
	      /* 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')"),
		       CGEN_SYNTAX_CHAR(*syn), *str);
	      return msg;
	    }
	  else
	    {
	      /* Ran out of input.  */
	      static char msg [80];

	      /* xgettext:c-format */
	      sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
		       CGEN_SYNTAX_CHAR(*syn));
	      return msg;
	    }
	  continue;
	}

      /* We have an operand of some sort.  */
      errmsg = xstormy16_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");
}
\f
/* 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 *
xstormy16_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 *parse_errmsg = NULL;
  const char *insert_errmsg = NULL;
  int recognized_mnemonic = 0;

  /* 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;
      recognized_mnemonic = 1;

#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 (! xstormy16_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;

      /* Skip this insn if str doesn't look right lexically.  */
      if (CGEN_INSN_RX (insn) != NULL &&
	  regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
	continue;

      /* Allow parse/insert handlers to obtain length of insn.  */
      CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);

      parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
      if (parse_errmsg != NULL)
	continue;

      /* ??? 0 is passed for `pc'.  */
      insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
						 (bfd_vma) 0);
      if (insert_errmsg != NULL)
        continue;

      /* It is up to the caller to actually output the insn and any
         queued relocs.  */
      return insn;
    }

  {
    static char errbuf[150];
#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
    const char *tmp_errmsg;

    /* If requesting verbose error messages, use insert_errmsg.
       Failing that, use parse_errmsg.  */
    tmp_errmsg = (insert_errmsg ? insert_errmsg :
		  parse_errmsg ? parse_errmsg :
		  recognized_mnemonic ?
		  _("unrecognized form of instruction") :
		  _("unrecognized instruction"));

    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;
  }
}
\f
#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
xstormy16_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 (! xstormy16_cgen_opval_supported (ke))
	continue;
#endif
      cgen_asm_record_register (cd, ke->name, ke->value);
    }
}

#endif /* 0 */
Commit	Line	Data
93fbbb04 GK	1	/* Assembler interface for targets using CGEN. -- C --
	2	CGEN: Cpu tools GENerator
	3
	4	THIS FILE IS MACHINE GENERATED WITH CGEN.
	5	- the resultant file is machine generated, cgen-asm.in isn't
	6
	7	Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
	8
	9	This file is part of the GNU Binutils and GDB, the GNU debugger.
	10
	11	This program is free software; you can redistribute it and/or modify
	12	it under the terms of the GNU General Public License as published by
	13	the Free Software Foundation; either version 2, or (at your option)
	14	any later version.
	15
	16	This program is distributed in the hope that it will be useful,
	17	but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	GNU General Public License for more details.
	20
	21	You should have received a copy of the GNU General Public License
	22	along with this program; if not, write to the Free Software Foundation, Inc.,
	23	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	24
	25	/* ??? Eventually more and more of this stuff can go to cpu-independent files.
	26	Keep that in mind. */
	27
	28	#include "sysdep.h"
	29	#include <stdio.h>
	30	#include "ansidecl.h"
	31	#include "bfd.h"
	32	#include "symcat.h"
	33	#include "xstormy16-desc.h"
	34	#include "xstormy16-opc.h"
	35	#include "opintl.h"
	36	#include "xregex.h"
	37	#include "libiberty.h"
	38	#include "safe-ctype.h"
	39
	40	#undef min
	41	#define min(a,b) ((a) < (b) ? (a) : (b))
	42	#undef max
	43	#define max(a,b) ((a) > (b) ? (a) : (b))
	44
	45	static const char * parse_insn_normal
	46	PARAMS ((CGEN_CPU_DESC, const CGEN_INSN , const char , CGEN_FIELDS ));
	47	\f
	48	/* -- assembler routines inserted here. */
	49
	50	/* -- asm.c */
	51	static const char * parse_mem8
	52	PARAMS ((CGEN_CPU_DESC, const char *, int, unsigned long ));
	53	static const char * parse_small_immediate
	54	PARAMS ((CGEN_CPU_DESC, const char *, int, unsigned long ));
	55
	56	/* The machine-independent code doesn't know how to disambiguate
	57	mov (foo),r3
	58	and
	59	mov (r2),r3
	60	where 'foo' is a label. This helps it out. */
	61
	62	static const char *
	63	parse_mem8 (cd, strp, opindex, valuep)
	64	CGEN_CPU_DESC cd;
65	const char **strp;
66	int opindex;
67	unsigned long *valuep;
68	{
69	if (**strp == '(')
70	{
71	const char s = strp;
72
73	if (s[1] == '-' && s[2] == '-')
74	return _("Bad register in preincrement");
75
76	while (isalnum (*++s))
77	;
78	if (s[0] == '+' && s[1] == '+' && (s[2] == ')' \|\| s[2] == ','))
79	return _("Bad register in postincrement");
80	if (s[0] == ',' \|\| s[0] == ')')
81	return _("Bad register name");
82	}
83	else if (cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names,
84	valuep) == NULL)
85	return _("Label conflicts with register name");
86	else if (strncasecmp (*strp, "rx,", 3) == 0
87	\|\| strncasecmp (*strp, "rxl,", 3) == 0
88	\|\| strncasecmp (*strp, "rxh,", 3) == 0)
89	return _("Label conflicts with `Rx'");
90	else if (**strp == '#')
91	return _("Bad immediate expression");
92
93	return cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
94	}
95
96	/* For the add and subtract instructions, there are two immediate forms,
97	one for small operands and one for large ones. We want to use
98	the small one when possible, but we do not want to generate relocs
99	of the small size. This is somewhat tricky. */
100
101	static const char *
102	parse_small_immediate (cd, strp, opindex, valuep)
103	CGEN_CPU_DESC cd;
104	const char **strp;
105	int opindex;
106	unsigned long *valuep;
107	{
108	bfd_vma value;
109	enum cgen_parse_operand_result result;
110	const char *errmsg;
111
112	errmsg = (* cd->parse_operand_fn)
113	(cd, CGEN_PARSE_OPERAND_INTEGER, strp, opindex, BFD_RELOC_NONE,
114	&result, &value);
115
116	if (errmsg)
117	return errmsg;
118
119	if (result != CGEN_PARSE_OPERAND_RESULT_NUMBER)
120	return _("Small operand was not an immediate number");
121
122	*valuep = value;
123	return NULL;
124	}
125	/* -- */
126
127	const char * xstormy16_cgen_parse_operand
128	PARAMS ((CGEN_CPU_DESC, int, const char *, CGEN_FIELDS ));
129
130	/* Main entry point for operand parsing.
131
132	This function is basically just a big switch statement. Earlier versions
133	used tables to look up the function to use, but
134	- if the table contains both assembler and disassembler functions then
135	the disassembler contains much of the assembler and vice-versa,
136	- there's a lot of inlining possibilities as things grow,
137	- using a switch statement avoids the function call overhead.
138
139	This function could be moved into `parse_insn_normal', but keeping it
140	separate makes clear the interface between `parse_insn_normal' and each of
141	the handlers. */
142
143	const char *
144	xstormy16_cgen_parse_operand (cd, opindex, strp, fields)
145	CGEN_CPU_DESC cd;
146	int opindex;
147	const char ** strp;
148	CGEN_FIELDS * fields;
149	{
150	const char * errmsg = NULL;
151	/* Used by scalar operands that still need to be parsed. */
152	long junk ATTRIBUTE_UNUSED;
153
154	switch (opindex)
155	{
156	case XSTORMY16_OPERAND_RB :
157	errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rb);
158	break;
159	case XSTORMY16_OPERAND_RBJ :
160	errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_Rbj_names, & fields->f_Rbj);
161	break;
162	case XSTORMY16_OPERAND_RD :
163	errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rd);
164	break;
165	case XSTORMY16_OPERAND_RDM :
166	errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rdm);
167	break;
168	case XSTORMY16_OPERAND_RM :
169	errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rm);
170	break;
171	case XSTORMY16_OPERAND_RS :
172	errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rs);
173	break;
174	case XSTORMY16_OPERAND_ABS24 :
175	errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_ABS24, &fields->f_abs24);
176	break;
177	case XSTORMY16_OPERAND_BCOND2 :
178	errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_branchcond, & fields->f_op2);
179	break;
180	case XSTORMY16_OPERAND_BCOND5 :
181	errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_branchcond, & fields->f_op5);
182	break;
183	case XSTORMY16_OPERAND_HMEM8 :
184	errmsg = parse_mem8 (cd, strp, XSTORMY16_OPERAND_HMEM8, &fields->f_hmem8);
185	break;
186	case XSTORMY16_OPERAND_IMM12 :
187	errmsg = cgen_parse_signed_integer (cd, strp, XSTORMY16_OPERAND_IMM12, &fields->f_imm12);
188	break;
189	case XSTORMY16_OPERAND_IMM16 :
190	errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM16, &fields->f_imm16);
191	break;
192	case XSTORMY16_OPERAND_IMM2 :
193	errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM2, &fields->f_imm2);
194	break;
195	case XSTORMY16_OPERAND_IMM3 :
196	errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM3, &fields->f_imm3);
197	break;
198	case XSTORMY16_OPERAND_IMM3B :
199	errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM3B, &fields->f_imm3b);
200	break;
201	case XSTORMY16_OPERAND_IMM4 :
202	errmsg = parse_small_immediate (cd, strp, XSTORMY16_OPERAND_IMM4, &fields->f_imm4);
203	break;
204	case XSTORMY16_OPERAND_IMM8 :
205	errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM8, &fields->f_imm8);
206	break;
207	case XSTORMY16_OPERAND_IMM8SMALL :
208	errmsg = parse_small_immediate (cd, strp, XSTORMY16_OPERAND_IMM8SMALL, &fields->f_imm8);
209	break;
210	case XSTORMY16_OPERAND_LMEM8 :
211	errmsg = parse_mem8 (cd, strp, XSTORMY16_OPERAND_LMEM8, &fields->f_lmem8);
212	break;
213	case XSTORMY16_OPERAND_REL12 :
214	errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL12, &fields->f_rel12);
215	break;
216	case XSTORMY16_OPERAND_REL12A :
217	errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL12A, &fields->f_rel12a);
218	break;
219	case XSTORMY16_OPERAND_REL8_2 :
220	errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL8_2, &fields->f_rel8_2);
221	break;
222	case XSTORMY16_OPERAND_REL8_4 :
223	errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL8_4, &fields->f_rel8_4);
224	break;
225	case XSTORMY16_OPERAND_WS2 :
226	errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_wordsize, & fields->f_op2m);
227	break;
228
229	default :
230	/* xgettext:c-format */
231	fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
232	abort ();
233	}
234
235	return errmsg;
236	}
237
238	cgen_parse_fn * const xstormy16_cgen_parse_handlers[] =
239	{
240	parse_insn_normal,
241	};
242
243	void
244	xstormy16_cgen_init_asm (cd)
245	CGEN_CPU_DESC cd;
246	{
247	xstormy16_cgen_init_opcode_table (cd);
248	xstormy16_cgen_init_ibld_table (cd);
249	cd->parse_handlers = & xstormy16_cgen_parse_handlers[0];
250	cd->parse_operand = xstormy16_cgen_parse_operand;
251	}
252
253	\f
254
255	/* Regex construction routine.
256
257	This translates an opcode syntax string into a regex string,
258	by replacing any non-character syntax element (such as an
259	opcode) with the pattern '.*'
260
261	It then compiles the regex and stores it in the opcode, for
262	later use by xstormy16_cgen_assemble_insn
263
264	Returns NULL for success, an error message for failure. */
265
266	char *
267	xstormy16_cgen_build_insn_regex (insn)
268	CGEN_INSN *insn;
269	{
270	CGEN_OPCODE opc = (CGEN_OPCODE ) CGEN_INSN_OPCODE (insn);
271	const char *mnem = CGEN_INSN_MNEMONIC (insn);
272	char rxbuf[CGEN_MAX_RX_ELEMENTS];
273	char *rx = rxbuf;
274	const CGEN_SYNTAX_CHAR_TYPE *syn;
275	int reg_err;
276
277	syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
278
279	/* Mnemonics come first in the syntax string. */
280	if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
281	return _("missing mnemonic in syntax string");
282	++syn;
283
284	/* Generate a case sensitive regular expression that emulates case
285	insensitive matching in the "C" locale. We cannot generate a case
286	insensitive regular expression because in Turkish locales, 'i' and 'I'
287	are not equal modulo case conversion. */
288
289	/* Copy the literal mnemonic out of the insn. */
290	for (; *mnem; mnem++)
291	{
292	char c = *mnem;
293
294	if (ISALPHA (c))
295	{
296	*rx++ = '[';
297	*rx++ = TOLOWER (c);
298	*rx++ = TOUPPER (c);
299	*rx++ = ']';
300	}
301	else
302	*rx++ = c;
303	}
304
305	/* Copy any remaining literals from the syntax string into the rx. */
306	for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
307	{
308	if (CGEN_SYNTAX_CHAR_P (* syn))
309	{
310	char c = CGEN_SYNTAX_CHAR (* syn);
311
312	switch (c)
313	{
314	/* Escape any regex metacharacters in the syntax. */
315	case '.': case '[': case '\\':
316	case '*': case '^': case '$':
317
318	#ifdef CGEN_ESCAPE_EXTENDED_REGEX
319	case '?': case '{': case '}':
320	case '(': case ')': case '*':
321	case '\|': case '+': case ']':
322	#endif
323	*rx++ = '\\';
324	*rx++ = c;
325	break;
326
327	default:
328	if (ISALPHA (c))
329	{
330	*rx++ = '[';
331	*rx++ = TOLOWER (c);
332	*rx++ = TOUPPER (c);
333	*rx++ = ']';
334	}
335	else
336	*rx++ = c;
337	break;
338	}
339	}
340	else
341	{
342	/* Replace non-syntax fields with globs. */
343	*rx++ = '.';
344	rx++ = '';
345	}
346	}
347
348	/* Trailing whitespace ok. */
349	* rx++ = '[';
350	* rx++ = ' ';
351	* rx++ = '\t';
352	* rx++ = ']';
353	* rx++ = '*';
354
355	/* But anchor it after that. */
356	* rx++ = '$';
357	* rx = '\0';
358
359	CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
360	reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
361
362	if (reg_err == 0)
363	return NULL;
364	else
365	{
366	static char msg[80];
367
368	regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
369	regfree ((regex_t *) CGEN_INSN_RX (insn));
370	free (CGEN_INSN_RX (insn));
371	(CGEN_INSN_RX (insn)) = NULL;
372	return msg;
373	}
374	}
375
376	\f
377	/* Default insn parser.
378
379	The syntax string is scanned and operands are parsed and stored in FIELDS.
380	Relocs are queued as we go via other callbacks.
381
382	??? Note that this is currently an all-or-nothing parser. If we fail to
383	parse the instruction, we return 0 and the caller will start over from
384	the beginning. Backtracking will be necessary in parsing subexpressions,
385	but that can be handled there. Not handling backtracking here may get
386	expensive in the case of the m68k. Deal with later.
387
388	Returns NULL for success, an error message for failure. */
389
390	static const char *
391	parse_insn_normal (cd, insn, strp, fields)
392	CGEN_CPU_DESC cd;
393	const CGEN_INSN *insn;
394	const char **strp;
395	CGEN_FIELDS *fields;
396	{
397	/* ??? Runtime added insns not handled yet. */
398	const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
399	const char str = strp;
400	const char *errmsg;
401	const char *p;
402	const CGEN_SYNTAX_CHAR_TYPE * syn;
403	#ifdef CGEN_MNEMONIC_OPERANDS
404	/* FIXME: wip */
405	int past_opcode_p;
406	#endif
407
408	/* For now we assume the mnemonic is first (there are no leading operands).
409	We can parse it without needing to set up operand parsing.
410	GAS's input scrubber will ensure mnemonics are lowercase, but we may
411	not be called from GAS. */
412	p = CGEN_INSN_MNEMONIC (insn);
413	while (p && TOLOWER (p) == TOLOWER (*str))
414	++p, ++str;
415
416	if (* p)
417	return _("unrecognized instruction");
418
419	#ifndef CGEN_MNEMONIC_OPERANDS
420	if (* str && ! ISSPACE (* str))
421	return _("unrecognized instruction");
422	#endif
423
424	CGEN_INIT_PARSE (cd);
425	cgen_init_parse_operand (cd);
426	#ifdef CGEN_MNEMONIC_OPERANDS
427	past_opcode_p = 0;
428	#endif
429
430	/* We don't check for (*str != '\0') here because we want to parse
431	any trailing fake arguments in the syntax string. */
432	syn = CGEN_SYNTAX_STRING (syntax);
433
434	/* Mnemonics come first for now, ensure valid string. */
435	if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
436	abort ();
437
438	++syn;
439
440	while (* syn != 0)
441	{
442	/* Non operand chars must match exactly. */
443	if (CGEN_SYNTAX_CHAR_P (* syn))
444	{
445	/* FIXME: While we allow for non-GAS callers above, we assume the
446	first char after the mnemonic part is a space. */
447	/* FIXME: We also take inappropriate advantage of the fact that
448	GAS's input scrubber will remove extraneous blanks. */
449	if (TOLOWER (str) == TOLOWER (CGEN_SYNTAX_CHAR ( syn)))
450	{
451	#ifdef CGEN_MNEMONIC_OPERANDS
452	if (CGEN_SYNTAX_CHAR(* syn) == ' ')
453	past_opcode_p = 1;
454	#endif
455	++ syn;
456	++ str;
457	}
458	else if (*str)
459	{
460	/* Syntax char didn't match. Can't be this insn. */
461	static char msg [80];
462
463	/* xgettext:c-format */
464	sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
465	CGEN_SYNTAX_CHAR(syn), str);
466	return msg;
467	}
468	else
469	{
470	/* Ran out of input. */
471	static char msg [80];
472
473	/* xgettext:c-format */
474	sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
475	CGEN_SYNTAX_CHAR(*syn));
476	return msg;
477	}
478	continue;
479	}
480
481	/* We have an operand of some sort. */
482	errmsg = xstormy16_cgen_parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
483	&str, fields);
484	if (errmsg)
485	return errmsg;
486
487	/* Done with this operand, continue with next one. */
488	++ syn;
489	}
490
491	/* If we're at the end of the syntax string, we're done. */
492	if (* syn == 0)
493	{
494	/* FIXME: For the moment we assume a valid `str' can only contain
495	blanks now. IE: We needn't try again with a longer version of
496	the insn and it is assumed that longer versions of insns appear
497	before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
498	while (ISSPACE (* str))
499	++ str;
500
501	if (* str != '\0')
502	return _("junk at end of line"); /* FIXME: would like to include `str' */
503
504	return NULL;
505	}
506
507	/* We couldn't parse it. */
508	return _("unrecognized instruction");
509	}
510	\f
511	/* Main entry point.
512	This routine is called for each instruction to be assembled.
513	STR points to the insn to be assembled.
514	We assume all necessary tables have been initialized.
515	The assembled instruction, less any fixups, is stored in BUF.
516	Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
517	still needs to be converted to target byte order, otherwise BUF is an array
518	of bytes in target byte order.
519	The result is a pointer to the insn's entry in the opcode table,
520	or NULL if an error occured (an error message will have already been
521	printed).
522
523	Note that when processing (non-alias) macro-insns,
524	this function recurses.
525
526	??? It's possible to make this cpu-independent.
527	One would have to deal with a few minor things.
528	At this point in time doing so would be more of a curiosity than useful
529	[for example this file isn't _that_ big], but keeping the possibility in
530	mind helps keep the design clean. */
531
532	const CGEN_INSN *
533	xstormy16_cgen_assemble_insn (cd, str, fields, buf, errmsg)
534	CGEN_CPU_DESC cd;
535	const char *str;
536	CGEN_FIELDS *fields;
537	CGEN_INSN_BYTES_PTR buf;
538	char **errmsg;
539	{
540	const char *start;
541	CGEN_INSN_LIST *ilist;
542	const char *parse_errmsg = NULL;
543	const char *insert_errmsg = NULL;
544	int recognized_mnemonic = 0;
545
546	/* Skip leading white space. */
547	while (ISSPACE (* str))
548	++ str;
549
550	/* The instructions are stored in hashed lists.
551	Get the first in the list. */
552	ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
553
554	/* Keep looking until we find a match. */
555	start = str;
556	for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
557	{
558	const CGEN_INSN *insn = ilist->insn;
559	recognized_mnemonic = 1;
560
561	#ifdef CGEN_VALIDATE_INSN_SUPPORTED
562	/* Not usually needed as unsupported opcodes
563	shouldn't be in the hash lists. */
564	/* Is this insn supported by the selected cpu? */
565	if (! xstormy16_cgen_insn_supported (cd, insn))
566	continue;
567	#endif
568	/* If the RELAX attribute is set, this is an insn that shouldn't be
569	chosen immediately. Instead, it is used during assembler/linker
570	relaxation if possible. */
571	if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAX) != 0)
572	continue;
573
574	str = start;
575
576	/* Skip this insn if str doesn't look right lexically. */
577	if (CGEN_INSN_RX (insn) != NULL &&
578	regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
579	continue;
580
581	/* Allow parse/insert handlers to obtain length of insn. */
582	CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
583
584	parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
585	if (parse_errmsg != NULL)
586	continue;
587
588	/* ??? 0 is passed for `pc'. */
589	insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
590	(bfd_vma) 0);
591	if (insert_errmsg != NULL)
592	continue;
593
594	/* It is up to the caller to actually output the insn and any
595	queued relocs. */
596	return insn;
597	}
598
599	{
600	static char errbuf[150];
601	#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
602	const char *tmp_errmsg;
603
604	/* If requesting verbose error messages, use insert_errmsg.
605	Failing that, use parse_errmsg. */
606	tmp_errmsg = (insert_errmsg ? insert_errmsg :
607	parse_errmsg ? parse_errmsg :
608	recognized_mnemonic ?
609	_("unrecognized form of instruction") :
610	_("unrecognized instruction"));
611
612	if (strlen (start) > 50)
613	/* xgettext:c-format */
614	sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
615	else
616	/* xgettext:c-format */
617	sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
618	#else
619	if (strlen (start) > 50)
620	/* xgettext:c-format */
621	sprintf (errbuf, _("bad instruction `%.50s...'"), start);
622	else
623	/* xgettext:c-format */
624	sprintf (errbuf, _("bad instruction `%.50s'"), start);
625	#endif
626
627	*errmsg = errbuf;
628	return NULL;
629	}
630	}
631	\f
632	#if 0 /* This calls back to GAS which we can't do without care. */
633
634	/* Record each member of OPVALS in the assembler's symbol table.
635	This lets GAS parse registers for us.
636	??? Interesting idea but not currently used. */
637
638	/* Record each member of OPVALS in the assembler's symbol table.
639	FIXME: Not currently used. */
640
641	void
642	xstormy16_cgen_asm_hash_keywords (cd, opvals)
643	CGEN_CPU_DESC cd;
644	CGEN_KEYWORD *opvals;
645	{
646	CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL);
647	const CGEN_KEYWORD_ENTRY * ke;
648
649	while ((ke = cgen_keyword_search_next (& search)) != NULL)
650	{
651	#if 0 /* Unnecessary, should be done in the search routine. */
652	if (! xstormy16_cgen_opval_supported (ke))
653	continue;
654	#endif
655	cgen_asm_record_register (cd, ke->name, ke->value);
656	}
657	}
658
659	#endif /* 0 */