Index: bfd/ChangeLog

2001-12-07  Geoffrey Keating  <geoffk@redhat.com>
	    Richard Henderson  <rth@redhat.com>
	    Corinna Vinschen  <vinschen@redhat.com>

	* Makefile.am: Add support for xstormy16.
	* archures.c: Add support for xstormy16.
	* config.bfd: Add support for xstormy16.
	* configure.in: Add support for xstormy16.
	* reloc.c: Add support for xstormy16.
	* targets.c: Add support for xstormy16.
	* cpu-xstormy16.c: New file.
	* elf32-xstormy16.c: New file.
	* Makefile.in: Regenerated.
	* bfd-in2.h: Regenerated.
	* configure: Regenerated.
	* libbfd.h: Regenerated.

Index: binutils/ChangeLog
2001-12-07  Geoffrey Keating  <geoffk@redhat.com>

	* readelf.c (guess_is_rela): Add support for stormy16.
	(dump_relocations): Likewise.
	(get_machine_name): Likewise.

Index: gas/ChangeLog
2001-12-07  Geoffrey Keating  <geoffk@redhat.com>
	    Richard Henderson  <rth@redhat.com>

	* configure.in: Add support for xstormy16.
	* configure: Regenerated.
	* Makefile.am: Add support for xstormy16.
	* Makefile.in: Regenerated.
	* config/tc-xstormy16.c: New file.
	* config/tc-xstormy16.h: New file.

Index: gas/testsuite/ChangeLog
2001-12-07  Geoffrey Keating  <geoffk@redhat.com>
	    matthew green  <mrg@redhat.com>

	* gas/xstormy16/allinsn.d: New file.
	* gas/xstormy16/allinsn.exp: New file.
	* gas/xstormy16/allinsn.s: New file.
	* gas/xstormy16/allinsn.sh: New file.
	* gas/xstormy16/gcc.d: New file.
	* gas/xstormy16/gcc.s: New file.
	* gas/xstormy16/gcc.sh: New file.
	* gas/xstormy16/reloc-1.d: New file.
	* gas/xstormy16/reloc-1.s: New file.
	* gas/xstormy16/reloc-2.d: New file.
	* gas/xstormy16/reloc-2.s: New file.

Index: ld/ChangeLog
2001-12-07  Geoffrey Keating  <geoffk@redhat.com>
	    Richard Henderson  <rth@redhat.com>

	* Makefile.am: Add support for xstormy16.
	* configure.tgt: Add support for xstormy16.
	* Makefile.in: Regenerate.
	* emulparams/elf32xstormy16.sh: New file.
	* scripttempl/xstormy16.sc: New file.

Index: opcodes/ChangeLog
2001-12-07  Geoffrey Keating  <geoffk@redhat.com>

	* Makefile.am: Add support for xstormy16.
	* Makefile.in: Regenerate.
	* configure.in: Add support for xstormy16.
	* configure: Regenerate.
	* disassemble.c: Add support for xstormy16.
	* xstormy16-asm.c: New generated file.
	* xstormy16-desc.c: New generated file.
	* xstormy16-desc.h: New generated file.
	* xstormy16-dis.c: New generated file.
	* xstormy16-ibld.c: New generated file.
	* xstormy16-opc.c: New generated file.
	* xstormy16-opc.h: New generated file.

Index: include/ChangeLog
2001-12-07  Geoffrey Keating  <geoffk@redhat.com>

	* dis-asm.h (print_insn_xstormy16): Declare.

Index: include/elf/ChangeLog
2001-12-07  Geoffrey Keating  <geoffk@redhat.com>
	    Richard Henderson  <rth@redhat.com>

	* common.h (EM_XSTORMY16): Define.
	* xstormy16.h: New file.

2 files changed, 719 insertions, 0 deletions

diff --git a/gas/config/tc-xstormy16.c b/gas/config/tc-xstormy16.c
new file mode 100644
index 0000000..7ef10e5
--- /dev/null
+++ b/gas/config/tc-xstormy16.c
@@ -0,0 +1,650 @@
+/* tc-xstormy16.c -- Assembler for the Sanyo XSTORMY16.
+   Copyright (C) 2000, 2001 Free Software Foundation.
+
+   This file is part of GAS, the GNU Assembler.
+
+   GAS 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.
+
+   GAS 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 GAS; see the file COPYING.  If not, write to
+   the Free Software Foundation, 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <stdio.h>
+#include "as.h"
+#include "subsegs.h"     
+#include "symcat.h"
+#include "opcodes/xstormy16-desc.h"
+#include "opcodes/xstormy16-opc.h"
+#include "cgen.h"
+
+/* Structure to hold all of the different components describing
+   an individual instruction.  */
+typedef struct
+{
+  const CGEN_INSN *	insn;
+  const CGEN_INSN *	orig_insn;
+  CGEN_FIELDS		fields;
+#if CGEN_INT_INSN_P
+  CGEN_INSN_INT         buffer [1];
+#define INSN_VALUE(buf) (*(buf))
+#else
+  unsigned char         buffer [CGEN_MAX_INSN_SIZE];
+#define INSN_VALUE(buf) (buf)
+#endif
+  char *		addr;
+  fragS *		frag;
+  int                   num_fixups;
+  fixS *                fixups [GAS_CGEN_MAX_FIXUPS];
+  int                   indices [MAX_OPERAND_INSTANCES];
+}
+xstormy16_insn;
+
+const char comment_chars[]        = ";";
+const char line_comment_chars[]   = "#";
+const char line_separator_chars[] = "|";
+const char EXP_CHARS[]            = "eE";
+const char FLT_CHARS[]            = "dD";
+
+#define O_fptr_symbol	(O_max + 1)
+
+#define XSTORMY16_SHORTOPTS ""
+const char * md_shortopts = XSTORMY16_SHORTOPTS;
+
+struct option md_longopts[] =
+{
+  {NULL, no_argument, NULL, 0}
+};
+size_t md_longopts_size = sizeof (md_longopts);
+
+int
+md_parse_option (c, arg)
+     int    c ATTRIBUTE_UNUSED;
+     char * arg ATTRIBUTE_UNUSED;
+{
+  return 0;
+}
+
+void
+md_show_usage (stream)
+  FILE * stream;
+{
+  fprintf (stream, _(" XSTORMY16 specific command line options:\n"));
+} 
+
+/* The target specific pseudo-ops which we support.  */
+const pseudo_typeS md_pseudo_table[] =
+{
+  { "word",	cons,		4 },
+  { NULL, 	NULL, 		0 }
+};
+
+
+void
+md_begin ()
+{
+  /* Initialize the `cgen' interface.  */
+  
+  /* Set the machine number and endian.  */
+  gas_cgen_cpu_desc = xstormy16_cgen_cpu_open (CGEN_CPU_OPEN_MACHS, 0,
+					  CGEN_CPU_OPEN_ENDIAN,
+					  CGEN_ENDIAN_LITTLE,
+					  CGEN_CPU_OPEN_END);
+  xstormy16_cgen_init_asm (gas_cgen_cpu_desc);
+
+  /* This is a callback from cgen to gas to parse operands.  */
+  cgen_set_parse_operand_fn (gas_cgen_cpu_desc, gas_cgen_parse_operand);
+}
+
+void
+md_assemble (str)
+     char * str;
+{
+  xstormy16_insn insn;
+  char *    errmsg;
+
+  /* Initialize GAS's cgen interface for a new instruction.  */
+  gas_cgen_init_parse ();
+
+  insn.insn = xstormy16_cgen_assemble_insn
+    (gas_cgen_cpu_desc, str, & insn.fields, insn.buffer, & errmsg);
+  
+  if (!insn.insn)
+    {
+      as_bad (errmsg);
+      return;
+    }
+
+  /* Doesn't really matter what we pass for RELAX_P here.  */
+  gas_cgen_finish_insn (insn.insn, insn.buffer,
+			CGEN_FIELDS_BITSIZE (& insn.fields), 0, NULL);
+}
+
+void 
+md_operand (e)
+     expressionS * e;
+{
+  if (*input_line_pointer != '@')
+    return;
+
+  if (strncmp (input_line_pointer+1, "fptr", 4) == 0)
+    {
+      input_line_pointer += 5;
+      SKIP_WHITESPACE ();
+      if (*input_line_pointer != '(')
+	{
+	  as_bad ("Expected '('");
+	  goto err;
+	}
+      input_line_pointer++;
+
+      expression (e);
+
+      if (*input_line_pointer != ')')
+	{
+	  as_bad ("Missing ')'");
+	  goto err;
+	}
+      input_line_pointer++;
+
+      if (e->X_op != O_symbol)
+	as_bad ("Not a symbolic expression");
+      else
+        e->X_op = O_fptr_symbol;
+    }
+
+  return;
+ err:
+  ignore_rest_of_line ();
+}
+
+/* Called while parsing data to create a fixup.
+   Create BFD_RELOC_XSTORMY16_FPTR16 relocations.  */
+
+void
+xstormy16_cons_fix_new (f, where, nbytes, exp)
+     fragS *f;
+     int where;
+     int nbytes;
+     expressionS *exp;
+{
+  bfd_reloc_code_real_type code;
+  fixS *fix;
+
+  if (exp->X_op == O_fptr_symbol)
+    {
+      if (nbytes != 2)
+	{
+	  as_bad ("unsupported fptr fixup size %d", nbytes);
+	  return;
+	}
+      exp->X_op = O_symbol;
+      code = BFD_RELOC_XSTORMY16_FPTR16;
+    }
+  else if (nbytes == 1)
+    code = BFD_RELOC_8;
+  else if (nbytes == 2)
+    code = BFD_RELOC_16;
+  else if (nbytes == 4)
+    code = BFD_RELOC_32;
+  else
+    {
+      as_bad ("unsupported fixup size %d", nbytes);
+      return;
+    }
+
+  fix = fix_new_exp (f, where, nbytes, exp, 0, code);
+}
+
+/* Called while parsing an instruction to create a fixup. 
+   Create BFD_RELOC_XSTORMY16_FPTR16 relocations.  */
+
+fixS *
+xstormy16_cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp)
+     fragS *              frag;
+     int                  where;
+     const CGEN_INSN *    insn;
+     int                  length;
+     const CGEN_OPERAND * operand;
+     int                  opinfo;
+     expressionS *        exp;
+{
+  fixS *fixP;
+  operatorT op = exp->X_op;
+  
+  if (op == O_fptr_symbol)
+    exp->X_op = O_symbol;
+
+  fixP = gas_cgen_record_fixup_exp (frag, where, insn, length,
+				    operand, opinfo, exp);
+
+  if (op == O_fptr_symbol)
+    {
+      if (operand->type != XSTORMY16_OPERAND_IMM16)
+	as_bad ("unsupported fptr fixup");
+      else
+	{
+	  fixP->fx_r_type = BFD_RELOC_XSTORMY16_FPTR16;
+	  fixP->fx_where += 2;
+	}
+    }
+
+  return fixP;
+}
+
+valueT
+md_section_align (segment, size)
+     segT   segment;
+     valueT size;
+{
+  int align = bfd_get_section_alignment (stdoutput, segment);
+  return ((size + (1 << align) - 1) & (-1 << align));
+}
+
+symbolS *
+md_undefined_symbol (name)
+  char * name ATTRIBUTE_UNUSED;
+{
+  return 0;
+}
+
+/* Return an initial guess of the length by which a fragment must grow to
+   hold a branch to reach its destination.
+   Also updates fr_type/fr_subtype as necessary.
+
+   Called just before doing relaxation.
+   Any symbol that is now undefined will not become defined.
+   The guess for fr_var is ACTUALLY the growth beyond fr_fix.
+   Whatever we do to grow fr_fix or fr_var contributes to our returned value.
+   Although it may not be explicit in the frag, pretend fr_var starts with a
+   0 value.  */
+
+int
+md_estimate_size_before_relax (fragP, segment)
+     fragS * fragP ATTRIBUTE_UNUSED;
+     segT    segment ATTRIBUTE_UNUSED;
+{
+  /* No assembler relaxation is defined (or necessary) for this port.  */
+  abort ();
+} 
+
+/* *fragP has been relaxed to its final size, and now needs to have
+   the bytes inside it modified to conform to the new size.
+
+   Called after relaxation is finished.
+   fragP->fr_type == rs_machine_dependent.
+   fragP->fr_subtype is the subtype of what the address relaxed to.  */
+
+void
+md_convert_frag (abfd, sec, fragP)
+  bfd *   abfd ATTRIBUTE_UNUSED;
+  segT    sec ATTRIBUTE_UNUSED;
+  fragS * fragP ATTRIBUTE_UNUSED;
+{
+  /* No assembler relaxation is defined (or necessary) for this port.  */
+  abort ();
+}
+
+/* Functions concerning relocs.  */
+
+/* The location from which a PC relative jump should be calculated,
+   given a PC relative reloc.  */
+
+long
+md_pcrel_from_section (fixP, sec)
+     fixS * fixP;
+     segT   sec;
+{
+  if (fixP->fx_addsy != (symbolS *) NULL
+      && (! S_IS_DEFINED (fixP->fx_addsy)
+	  || S_GET_SEGMENT (fixP->fx_addsy) != sec))
+    {
+      /* The symbol is undefined (or is defined but not in this section).
+	 Let the linker figure it out.  */
+      return 0;
+    }
+
+  return fixP->fx_frag->fr_address + fixP->fx_where;
+}
+
+/* Return the bfd reloc type for OPERAND of INSN at fixup FIXP.
+   Returns BFD_RELOC_NONE if no reloc type can be found.
+   *FIXP may be modified if desired.  */
+
+bfd_reloc_code_real_type
+md_cgen_lookup_reloc (insn, operand, fixP)
+     const CGEN_INSN *    insn ATTRIBUTE_UNUSED;
+     const CGEN_OPERAND * operand;
+     fixS *               fixP;
+{
+  switch (operand->type)
+    {
+    case XSTORMY16_OPERAND_IMM2:
+    case XSTORMY16_OPERAND_IMM3:
+    case XSTORMY16_OPERAND_IMM3B:
+    case XSTORMY16_OPERAND_IMM4:
+    case XSTORMY16_OPERAND_IMM12:
+    case XSTORMY16_OPERAND_HMEM8:
+      return BFD_RELOC_NONE;
+      
+    case XSTORMY16_OPERAND_IMM8:
+    case XSTORMY16_OPERAND_LMEM8:
+      return fixP->fx_pcrel ? BFD_RELOC_8_PCREL : BFD_RELOC_8;
+      
+    case XSTORMY16_OPERAND_IMM16:
+      fixP->fx_where += 2;
+      return fixP->fx_pcrel ? BFD_RELOC_16_PCREL : BFD_RELOC_16;
+
+    case XSTORMY16_OPERAND_ABS24:
+      return BFD_RELOC_XSTORMY16_24;
+
+    case XSTORMY16_OPERAND_REL8_2:
+    case XSTORMY16_OPERAND_REL8_4:
+      fixP->fx_pcrel = 1;
+      return BFD_RELOC_8_PCREL;
+
+    case XSTORMY16_OPERAND_REL12:
+      fixP->fx_where += 2;
+      /* Fall through... */
+    case XSTORMY16_OPERAND_REL12A:
+      fixP->fx_pcrel = 1;
+      return BFD_RELOC_XSTORMY16_REL_12;
+
+    default : /* avoid -Wall warning */
+      abort ();
+    }
+}
+
+/* See whether we need to force a relocation into the output file.
+   This is used to force out switch and PC relative relocations when
+   relaxing.  */
+
+int
+xstormy16_force_relocation (fix)
+     fixS * fix;
+{
+  switch (fix->fx_r_type)
+    {
+    case BFD_RELOC_XSTORMY16_FPTR16:
+    case BFD_RELOC_VTABLE_INHERIT:
+    case BFD_RELOC_VTABLE_ENTRY:
+      return 1;
+
+    default:
+      return 0;
+    }
+}
+
+/* Return true if a relocation against a symbol may be replaced with
+   a relocation against section+offset.  */
+
+boolean
+xstormy16_fix_adjustable (fixP)
+   fixS * fixP;
+{
+  if (fixP->fx_addsy == NULL)
+    return 1;
+  
+  /* Prevent all adjustments to global symbols. */
+  if (S_IS_EXTERN (fixP->fx_addsy))
+    return 0;
+  
+  if (S_IS_WEAK (fixP->fx_addsy))
+    return 0;
+  
+  return ! xstormy16_force_relocation (fixP);
+}
+
+/* This is a copy of gas_cgen_md_apply_fix3, with some enhancements to
+   do various things that would not be valid for all ports.  */
+
+void
+xstormy16_md_apply_fix3 (fixP, valueP, seg)
+     fixS *   fixP;
+     valueT * valueP;
+     segT     seg ATTRIBUTE_UNUSED;
+{
+  char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
+  valueT value;
+  /* Canonical name, since used a lot.  */
+  CGEN_CPU_DESC cd = gas_cgen_cpu_desc;
+
+  /* This port has pc-relative relocs and DIFF_EXPR_OK defined, so
+     it must deal with turning a BFD_RELOC_{8,16,32,64} into a
+     BFD_RELOC_*_PCREL for the case of
+
+	.word something-.
+  */
+  if (fixP->fx_pcrel)
+    switch (fixP->fx_r_type)
+      {
+      case BFD_RELOC_8:
+	fixP->fx_r_type = BFD_RELOC_8_PCREL;
+	break;
+      case BFD_RELOC_16:
+	fixP->fx_r_type = BFD_RELOC_16_PCREL;
+	break;
+      case BFD_RELOC_32:
+	fixP->fx_r_type = BFD_RELOC_32_PCREL;
+	break;
+      case BFD_RELOC_64:
+	fixP->fx_r_type = BFD_RELOC_64_PCREL;
+	break;
+      default:
+	break;
+      }
+  
+  /* FIXME FIXME FIXME: The value we are passed in *valuep includes
+     the symbol values.  Since we are using BFD_ASSEMBLER, if we are
+     doing this relocation the code in write.c is going to call
+     bfd_install_relocation, which is also going to use the symbol
+     value.  That means that if the reloc is fully resolved we want to
+     use *valuep since bfd_install_relocation is not being used.
+     However, if the reloc is not fully resolved we do not want to use
+     *valuep, and must use fx_offset instead.  However, if the reloc
+     is PC relative, we do want to use *valuep since it includes the
+     result of md_pcrel_from.  This is confusing.  */
+
+  if (fixP->fx_addsy == (symbolS *) NULL)
+    {
+      value = *valueP;
+      fixP->fx_done = 1;
+    }
+  else if (fixP->fx_pcrel)
+    value = *valueP;
+  else
+    {
+      value = fixP->fx_offset;
+      if (fixP->fx_subsy != (symbolS *) NULL)
+	{
+	  if (S_GET_SEGMENT (fixP->fx_subsy) == absolute_section)
+	    value -= S_GET_VALUE (fixP->fx_subsy);
+	  else
+	    {
+	      /* We don't actually support subtracting a symbol.  */
+	      as_bad_where (fixP->fx_file, fixP->fx_line,
+			    _("expression too complex"));
+	    }
+	}
+    }
+
+  if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
+    {
+      int opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
+      const CGEN_OPERAND *operand = cgen_operand_lookup_by_num (cd, opindex);
+      const char *errmsg;
+      bfd_reloc_code_real_type reloc_type;
+      CGEN_FIELDS *fields = alloca (CGEN_CPU_SIZEOF_FIELDS (cd));
+      const CGEN_INSN *insn = fixP->fx_cgen.insn;
+
+      /* If the reloc has been fully resolved finish the operand here.  */
+      /* FIXME: This duplicates the capabilities of code in BFD.  */
+      if (fixP->fx_done)
+	{
+	  CGEN_CPU_SET_FIELDS_BITSIZE (cd) (fields, CGEN_INSN_BITSIZE (insn));
+	  CGEN_CPU_SET_VMA_OPERAND (cd) (cd, opindex, fields, (bfd_vma) value);
+
+#if CGEN_INT_INSN_P
+	  {
+	    CGEN_INSN_INT insn_value =
+	      cgen_get_insn_value (cd, where, CGEN_INSN_BITSIZE (insn));
+
+	    /* ??? 0 is passed for `pc'.  */
+	    errmsg = CGEN_CPU_INSERT_OPERAND (cd) (cd, opindex, fields,
+						   &insn_value, (bfd_vma) 0);
+	    cgen_put_insn_value (cd, where, CGEN_INSN_BITSIZE (insn),
+				 insn_value);
+	  }
+#else
+	  /* ??? 0 is passed for `pc'.  */
+	  errmsg = CGEN_CPU_INSERT_OPERAND (cd) (cd, opindex, fields, where,
+						 (bfd_vma) 0);
+#endif
+	  if (errmsg)
+	    as_bad_where (fixP->fx_file, fixP->fx_line, "%s", errmsg);
+	}
+
+      if (fixP->fx_done)
+	return 1;
+
+      /* The operand isn't fully resolved.  Determine a BFD reloc value
+	 based on the operand information and leave it to
+	 bfd_install_relocation.  Note that this doesn't work when
+	 partial_inplace == false.  */
+
+      reloc_type = md_cgen_lookup_reloc (insn, operand, fixP);
+      if (reloc_type != BFD_RELOC_NONE)
+	{
+	  fixP->fx_r_type = reloc_type;
+	}
+      else
+	{
+	  as_bad_where (fixP->fx_file, fixP->fx_line,
+			_("unresolved expression that must be resolved"));
+	  fixP->fx_done = 1;
+	  return 1;
+	}
+    }
+  else if (fixP->fx_done)
+    {
+      /* We're finished with this fixup.  Install it because
+	 bfd_install_relocation won't be called to do it.  */
+      switch (fixP->fx_r_type)
+	{
+	case BFD_RELOC_8:
+	  md_number_to_chars (where, value, 1);
+	  break;
+	case BFD_RELOC_16:
+	  md_number_to_chars (where, value, 2);
+	  break;
+	case BFD_RELOC_32:
+	  md_number_to_chars (where, value, 4);
+	  break;
+	case BFD_RELOC_64:
+	  md_number_to_chars (where, value, 8);
+	  break;
+	default:
+	  as_bad_where (fixP->fx_file, fixP->fx_line,
+			_("internal error: can't install fix for reloc type %d (`%s')"),
+			fixP->fx_r_type, bfd_get_reloc_code_name (fixP->fx_r_type));
+	  break;
+	}
+    }
+  else
+    {
+      /* bfd_install_relocation will be called to finish things up.  */
+    }
+
+  /* This is a RELA port.  Thus, it does not need to store a
+     value if it is going to make a reloc.  What's more, when
+     assembling a line like
+     
+     .byte global-0x7f00
+     
+     we'll get a spurious error message if we try to stuff 0x7f00 into
+     the byte.  */
+  if (! fixP->fx_done)
+    *valueP = 0;
+
+  /* Tuck `value' away for use by tc_gen_reloc.
+     See the comment describing fx_addnumber in write.h.
+     This field is misnamed (or misused :-).  */
+  fixP->fx_addnumber = value;
+
+  return 1;
+}
+
+
+/* Write a value out to the object file, using the appropriate endianness.  */
+
+void
+md_number_to_chars (buf, val, n)
+     char * buf;
+     valueT val;
+     int    n;
+{
+  number_to_chars_littleendian (buf, val, n);
+}
+
+/* Turn a string in input_line_pointer into a floating point constant of type
+   type, and store the appropriate bytes in *litP.  The number of LITTLENUMS
+   emitted is stored in *sizeP .  An error message is returned, or NULL on OK.
+*/
+
+/* Equal to MAX_PRECISION in atof-ieee.c */
+#define MAX_LITTLENUMS 6
+
+char *
+md_atof (type, litP, sizeP)
+     char   type;
+     char * litP;
+     int *  sizeP;
+{
+  int              prec;
+  LITTLENUM_TYPE   words [MAX_LITTLENUMS];
+  LITTLENUM_TYPE   *wordP;
+  char *           t;
+
+  switch (type)
+    {
+    case 'f':
+    case 'F':
+      prec = 2;
+      break;
+
+    case 'd':
+    case 'D':
+      prec = 4;
+      break;
+
+   /* FIXME: Some targets allow other format chars for bigger sizes here.  */
+
+    default:
+      * sizeP = 0;
+      return _("Bad call to md_atof()");
+    }
+
+  t = atof_ieee (input_line_pointer, type, words);
+  if (t)
+    input_line_pointer = t;
+  * sizeP = prec * sizeof (LITTLENUM_TYPE);
+
+  *sizeP = prec * sizeof (LITTLENUM_TYPE);
+  /* This loops outputs the LITTLENUMs in REVERSE order; in accord with
+     the littleendianness of the processor.  */
+  for (wordP = words + prec - 1; prec--;)
+    {
+      md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE));
+      litP += sizeof (LITTLENUM_TYPE);
+    }
+     
+  return 0;
+}
diff --git a/gas/config/tc-xstormy16.h b/gas/config/tc-xstormy16.h
new file mode 100644
index 0000000..07ff314
--- /dev/null
+++ b/gas/config/tc-xstormy16.h
@@ -0,0 +1,69 @@
+/* tc-xstormy16.h -- Header file for tc-xstormy16.c.
+   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+
+   This file is part of GAS, the GNU Assembler.
+
+   GAS 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.
+
+   GAS 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 GAS; see the file COPYING.  If not, write to
+   the Free Software Foundation, 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA. */
+
+#define TC_XSTORMY16
+
+#ifndef BFD_ASSEMBLER
+/* leading space so will compile with cc */
+ #error XSTORMY16 support requires BFD_ASSEMBLER
+#endif
+
+#define LISTING_HEADER "XSTORMY16 GAS "
+
+/* The target BFD architecture.  */
+#define TARGET_ARCH bfd_arch_xstormy16
+
+#define TARGET_FORMAT "elf32-xstormy16"
+
+#define TARGET_BYTES_BIG_ENDIAN 0
+
+/* call md_pcrel_from_section, not md_pcrel_from */
+long md_pcrel_from_section PARAMS ((struct fix *, segT));
+#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section (FIXP, SEC)
+
+/* Permit temporary numeric labels.  */
+#define LOCAL_LABELS_FB 1
+
+#define DIFF_EXPR_OK		/* foo-. gets turned into PC relative relocs */
+
+/* We don't need to handle .word strangely.  */
+#define WORKING_DOT_WORD
+
+#define MD_APPLY_FIX3
+#define md_apply_fix3 xstormy16_md_apply_fix3
+
+#define obj_fix_adjustable(fixP) xstormy16_fix_adjustable (fixP)
+extern boolean xstormy16_fix_adjustable PARAMS ((struct fix *));
+
+#define TC_FORCE_RELOCATION(fix) xstormy16_force_relocation (fix)
+extern int xstormy16_force_relocation PARAMS ((struct fix *));
+
+#define TC_HANDLES_FX_DONE
+
+#define tc_gen_reloc gas_cgen_tc_gen_reloc
+
+/* Call md_pcrel_from_section(), not md_pcrel_from().  */
+#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section (FIXP, SEC)
+extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
+
+#define TC_CONS_FIX_NEW xstormy16_cons_fix_new
+extern void xstormy16_cons_fix_new PARAMS ((fragS *f, int, int, expressionS *));
+
+#define md_cgen_record_fixup_exp  xstormy16_cgen_record_fixup_exp