[deliverable/binutils-gdb.git] / gas / config / tc-moxie.c

/* tc-moxie.c -- Assemble code for moxie
   Copyright 2009, 2012
   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 3, 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, 51 Franklin Street - Fifth Floor,
   Boston, MA 02110-1301, USA.  */

/* Contributed by Anthony Green <green@moxielogic.com>.  */

#include "as.h"
#include "safe-ctype.h"
#include "opcode/moxie.h"
#include "elf/moxie.h"

extern const moxie_opc_info_t moxie_opc_info[128];

const char comment_chars[]        = "#";
const char line_separator_chars[] = ";";
const char line_comment_chars[]   = "#";

static int pending_reloc;
static struct hash_control *opcode_hash_control;

const pseudo_typeS md_pseudo_table[] =
{
  {0, 0, 0}
};

const char FLT_CHARS[] = "rRsSfFdDxXpP";
const char EXP_CHARS[] = "eE";

static valueT md_chars_to_number (char * buf, int n);

/* Byte order.  */
extern int target_big_endian;
const char *moxie_target_format = DEFAULT_TARGET_FORMAT;

void
md_operand (expressionS *op __attribute__((unused)))
{
  /* Empty for now. */
}

/* This function is called once, at assembler startup time.  It sets
   up the hash table with all the opcodes in it, and also initializes
   some aliases for compatibility with other assemblers.  */

void
md_begin (void)
{
  int count;
  const moxie_opc_info_t *opcode;
  opcode_hash_control = hash_new ();

  /* Insert names into hash table.  */
  for (count = 0, opcode = moxie_form1_opc_info; count++ < 64; opcode++)
    hash_insert (opcode_hash_control, opcode->name, (char *) opcode);

  for (count = 0, opcode = moxie_form2_opc_info; count++ < 4; opcode++)
    hash_insert (opcode_hash_control, opcode->name, (char *) opcode);

  for (count = 0, opcode = moxie_form3_opc_info; count++ < 10; opcode++)
    hash_insert (opcode_hash_control, opcode->name, (char *) opcode);

  bfd_set_arch_mach (stdoutput, TARGET_ARCH, 0);
}

/* Parse an expression and then restore the input line pointer.  */

static char *
parse_exp_save_ilp (char *s, expressionS *op)
{
  char *save = input_line_pointer;

  input_line_pointer = s;
  expression (op);
  s = input_line_pointer;
  input_line_pointer = save;
  return s;
}

static int
parse_register_operand (char **ptr)
{
  int reg;
  char *s = *ptr;

  if (*s != '$')
    {
      as_bad (_("expecting register"));
      ignore_rest_of_line ();
      return -1;
    }
  if (s[1] == 'f' && s[2] == 'p')
    {
      *ptr += 3;
      return 0;
    }
  if (s[1] == 's' && s[2] == 'p')
    {
      *ptr += 3;
      return 1;
    }
  if (s[1] == 'r')
    {
      reg = s[2] - '0';
      if ((reg < 0) || (reg > 9))
	{
	  as_bad (_("illegal register number"));
	  ignore_rest_of_line ();
	  return -1;
	}
      if (reg == 1)
	{
	  int r2 = s[3] - '0';
	  if ((r2 >= 0) && (r2 <= 3))
	    {
	      reg = 10 + r2;
	      *ptr += 1;
	    }
	}
    }
  else
    {
      as_bad (_("illegal register number"));
      ignore_rest_of_line ();
      return -1;
    }

  *ptr += 3;

  return reg + 2;
}

/* This is the guts of the machine-dependent assembler.  STR points to
   a machine dependent instruction.  This function is supposed to emit
   the frags/bytes it assembles to.  */

void
md_assemble (char *str)
{
  char *op_start;
  char *op_end;

  moxie_opc_info_t *opcode;
  char *p;
  char pend;

  unsigned short iword = 0;

  int nlen = 0;

  /* Drop leading whitespace.  */
  while (*str == ' ')
    str++;

  /* Find the op code end.  */
  op_start = str;
  for (op_end = str;
       *op_end && !is_end_of_line[*op_end & 0xff] && *op_end != ' ';
       op_end++)
    nlen++;

  pend = *op_end;
  *op_end = 0;

  if (nlen == 0)
    as_bad (_("can't find opcode "));
  opcode = (moxie_opc_info_t *) hash_find (opcode_hash_control, op_start);
  *op_end = pend;

  if (opcode == NULL)
    {
      as_bad (_("unknown opcode %s"), op_start);
      return;
    }

  p = frag_more (2);

  switch (opcode->itype)
    {
    case MOXIE_F2_A8V:
      iword = (1<<15) | (opcode->opcode << 12);
      while (ISSPACE (*op_end))
	op_end++;
      {
	expressionS arg;
	int reg;
	reg = parse_register_operand (&op_end);
	iword += (reg << 8);
	if (*op_end != ',')
	  as_warn (_("expecting comma delimited register operands"));
	op_end++;
	op_end = parse_exp_save_ilp (op_end, &arg);
	fix_new_exp (frag_now,
		     ((p + (target_big_endian ? 1 : 0)) - frag_now->fr_literal),
		     1,
		     &arg,
		     0,
		     BFD_RELOC_8);
      }
      break;
    case MOXIE_F1_AB:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
	op_end++;
      {
	int dest, src;
	dest = parse_register_operand (&op_end);
	if (*op_end != ',')
	  as_warn (_("expecting comma delimited register operands"));
	op_end++;
	src  = parse_register_operand (&op_end);
	iword += (dest << 4) + src;
	while (ISSPACE (*op_end))
	  op_end++;
	if (*op_end != 0)
	  as_warn (_("extra stuff on line ignored"));
      }
      break;
    case MOXIE_F1_A4:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
	op_end++;
      {
	expressionS arg;
	char *where;
	int regnum;

 	regnum = parse_register_operand (&op_end);
	while (ISSPACE (*op_end))
	  op_end++;

	iword += (regnum << 4);

	if (*op_end != ',')
	  {
	    as_bad (_("expecting comma delimited operands"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;

	op_end = parse_exp_save_ilp (op_end, &arg);
	where = frag_more (4);
	fix_new_exp (frag_now,
		     (where - frag_now->fr_literal),
		     4,
		     &arg,
		     0,
		     BFD_RELOC_32);
      }
      break;
    case MOXIE_F1_M:
    case MOXIE_F1_4:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
	op_end++;
      {
	expressionS arg;
	char *where;

	op_end = parse_exp_save_ilp (op_end, &arg);
	where = frag_more (4);
	fix_new_exp (frag_now,
		     (where - frag_now->fr_literal),
		     4,
		     &arg,
		     0,
		     BFD_RELOC_32);
      }
      break;
    case MOXIE_F1_NARG:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
	op_end++;
      if (*op_end != 0)
	as_warn (_("extra stuff on line ignored"));
      break;
    case MOXIE_F1_A:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
	op_end++;
      {
	int reg;
	reg = parse_register_operand (&op_end);
	while (ISSPACE (*op_end))
	  op_end++;
	if (*op_end != 0)
	  as_warn (_("extra stuff on line ignored"));
	iword += (reg << 4);
      }
      break;
    case MOXIE_F1_ABi:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
	op_end++;
      {
	int a, b;
	a = parse_register_operand (&op_end);
	if (*op_end != ',')
	  as_warn (_("expecting comma delimited register operands"));
	op_end++;
	if (*op_end != '(')
	  {
	    as_bad (_("expecting indirect register `($rA)'"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;
	b = parse_register_operand (&op_end);
	if (*op_end != ')')
	  {
	    as_bad (_("missing closing parenthesis"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;
	iword += (a << 4) + b;
	while (ISSPACE (*op_end))
	  op_end++;
	if (*op_end != 0)
	  as_warn (_("extra stuff on line ignored"));
      }
      break;
    case MOXIE_F1_AiB:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
	op_end++;
      {
	int a, b;
	if (*op_end != '(')
	  {
	    as_bad (_("expecting indirect register `($rA)'"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;
	a = parse_register_operand (&op_end);
	if (*op_end != ')')
	  {
	    as_bad (_("missing closing parenthesis"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;
	if (*op_end != ',')
	  as_warn (_("expecting comma delimited register operands"));
	op_end++;
	b = parse_register_operand (&op_end);
	iword += (a << 4) + b;
	while (ISSPACE (*op_end))
	  op_end++;
	if (*op_end != 0)
	  as_warn (_("extra stuff on line ignored"));
      }
      break;
    case MOXIE_F1_4A:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
	op_end++;
      {
	expressionS arg;
	char *where;
	int a;

	op_end = parse_exp_save_ilp (op_end, &arg);
	where = frag_more (4);
	fix_new_exp (frag_now,
		     (where - frag_now->fr_literal),
		     4,
		     &arg,
		     0,
		     BFD_RELOC_32);

	if (*op_end != ',')
	  {
	    as_bad (_("expecting comma delimited operands"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;

 	a = parse_register_operand (&op_end);
	while (ISSPACE (*op_end))
	  op_end++;
	if (*op_end != 0)
	  as_warn (_("extra stuff on line ignored"));

	iword += (a << 4);
      }
      break;
    case MOXIE_F1_ABi4:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
	op_end++;
      {
	expressionS arg;
	char *offset;
	int a, b;

 	a = parse_register_operand (&op_end);
	while (ISSPACE (*op_end))
	  op_end++;

	if (*op_end != ',')
	  {
	    as_bad (_("expecting comma delimited operands"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;

	op_end = parse_exp_save_ilp (op_end, &arg);
	offset = frag_more (4);
	fix_new_exp (frag_now,
		     (offset - frag_now->fr_literal),
		     4,
		     &arg,
		     0,
		     BFD_RELOC_32);

	if (*op_end != '(')
	  {
	    as_bad (_("expecting indirect register `($rX)'"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;
	b = parse_register_operand (&op_end);
	if (*op_end != ')')
	  {
	    as_bad (_("missing closing parenthesis"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;

	while (ISSPACE (*op_end))
	  op_end++;
	if (*op_end != 0)
	  as_warn (_("extra stuff on line ignored"));

	iword += (a << 4) + b;
      }
      break;
    case MOXIE_F1_AiB4:
      iword = opcode->opcode << 8;
      while (ISSPACE (*op_end))
	op_end++;
      {
	expressionS arg;
	char *offset;
	int a, b;

	op_end = parse_exp_save_ilp (op_end, &arg);
	offset = frag_more (4);
	fix_new_exp (frag_now,
		     (offset - frag_now->fr_literal),
		     4,
		     &arg,
		     0,
		     BFD_RELOC_32);

	if (*op_end != '(')
	  {
	    as_bad (_("expecting indirect register `($rX)'"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;
	a = parse_register_operand (&op_end);
	if (*op_end != ')')
	  {
	    as_bad (_("missing closing parenthesis"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;

	if (*op_end != ',')
	  {
	    as_bad (_("expecting comma delimited operands"));
	    ignore_rest_of_line ();
	    return;
	  }
	op_end++;

 	b = parse_register_operand (&op_end);
	while (ISSPACE (*op_end))
	  op_end++;

	while (ISSPACE (*op_end))
	  op_end++;
	if (*op_end != 0)
	  as_warn (_("extra stuff on line ignored"));

	iword += (a << 4) + b;
      }
      break;
    case MOXIE_F2_NARG:
      iword = opcode->opcode << 12;
      while (ISSPACE (*op_end))
	op_end++;
      if (*op_end != 0)
	as_warn (_("extra stuff on line ignored"));
      break;
    case MOXIE_F3_PCREL:
      iword = (3<<14) | (opcode->opcode << 10);
      while (ISSPACE (*op_end))
	op_end++;
      {
	expressionS arg;

	op_end = parse_exp_save_ilp (op_end, &arg);
	fix_new_exp (frag_now,
		     (p - frag_now->fr_literal),
		     2,
		     &arg,
		     TRUE,
		     BFD_RELOC_MOXIE_10_PCREL);
      }
      break;
    default:
      abort ();
    }

  md_number_to_chars (p, iword, 2);

  while (ISSPACE (*op_end))
    op_end++;

  if (*op_end != 0)
    as_warn (_("extra stuff on line ignored"));

  if (pending_reloc)
    as_bad (_("Something forgot to clean up\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.  */

char *
md_atof (int type, char *litP, int *sizeP)
{
  int prec;
  LITTLENUM_TYPE words[4];
  char *t;
  int i;

  switch (type)
    {
    case 'f':
      prec = 2;
      break;

    case 'd':
      prec = 4;
      break;

    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 * 2;

  for (i = prec - 1; i >= 0; i--)
    {
      md_number_to_chars (litP, (valueT) words[i], 2);
      litP += 2;
    }

  return NULL;
}

enum options
{
  OPTION_EB = OPTION_MD_BASE,
  OPTION_EL,
};

struct option md_longopts[] =
{
  { "EB",          no_argument, NULL, OPTION_EB},
  { "EL",          no_argument, NULL, OPTION_EL},
  { NULL,          no_argument, NULL, 0}
};

size_t md_longopts_size = sizeof (md_longopts);
\f
const char *md_shortopts = "";

int
md_parse_option (int c ATTRIBUTE_UNUSED, char *arg ATTRIBUTE_UNUSED)
{
  switch (c)
    {
    case OPTION_EB: 
      target_big_endian = 1; 
      moxie_target_format = "elf32-bigmoxie";
      break;
    case OPTION_EL: 
      target_big_endian = 0;
      moxie_target_format = "elf32-littlemoxie";
      break;
    default:        
      return 0;
    }

  return 1;
}

void
md_show_usage (FILE *stream ATTRIBUTE_UNUSED)
{
  fprintf (stream, _("\
  -EB                     assemble for a big endian system (default)\n\
  -EL                     assemble for a little endian system\n"));
}

/* Apply a fixup to the object file.  */

void
md_apply_fix (fixS *fixP ATTRIBUTE_UNUSED, 
	      valueT * valP ATTRIBUTE_UNUSED, segT seg ATTRIBUTE_UNUSED)
{
  char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
  long val = *valP;
  long newval;
  long max, min;

  max = min = 0;
  switch (fixP->fx_r_type)
    {
    case BFD_RELOC_32:
      if (target_big_endian)
	{
	  buf[0] = val >> 24;
	  buf[1] = val >> 16;
	  buf[2] = val >> 8;
	  buf[3] = val >> 0;
	}
      else
	{
	  buf[3] = val >> 24;
	  buf[2] = val >> 16;
	  buf[1] = val >> 8;
	  buf[0] = val >> 0;
	}
      buf += 4;
      break;

    case BFD_RELOC_16:
      if (target_big_endian)
	{
	  buf[0] = val >> 8;
	  buf[1] = val >> 0;
	}
      else
	{
	  buf[1] = val >> 8;
	  buf[0] = val >> 0;
	}
      buf += 2;
      break;

    case BFD_RELOC_8:
      *buf++ = val;
      break;

    case BFD_RELOC_MOXIE_10_PCREL:
      if (!val)
	break;
      if (val < -1024 || val > 1022)
	as_bad_where (fixP->fx_file, fixP->fx_line,
                      _("pcrel too far BFD_RELOC_MOXIE_10"));
      /* 11 bit offset even numbered, so we remove right bit.  */
      val >>= 1;
      newval = md_chars_to_number (buf, 2);
      newval |= val & 0x03ff;
      md_number_to_chars (buf, newval, 2);
      break;

    default:
      abort ();
    }

  if (max != 0 && (val < min || val > max))
    as_bad_where (fixP->fx_file, fixP->fx_line, _("offset out of range"));

  if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
    fixP->fx_done = 1;
}

/* Put number into target byte order.  */

void
md_number_to_chars (char * ptr, valueT use, int nbytes)
{
  if (target_big_endian)
    number_to_chars_bigendian (ptr, use, nbytes);
  else
    number_to_chars_littleendian (ptr, use, nbytes);
}

/* Convert from target byte order to host byte order.  */

static valueT
md_chars_to_number (char * buf, int n)
{
  valueT result = 0;
  unsigned char * where = (unsigned char *) buf;

  if (target_big_endian)
    {
      while (n--)
	{
	  result <<= 8;
	  result |= (*where++ & 255);
	}
    }
  else
    {
      while (n--)
	{
	  result <<= 8;
	  result |= (where[n] & 255);
	}
    }

  return result;
}

/* Generate a machine-dependent relocation.  */
arelent *
tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixP)
{
  arelent *relP;
  bfd_reloc_code_real_type code;

  switch (fixP->fx_r_type)
    {
    case BFD_RELOC_32:
      code = fixP->fx_r_type;
      break;
    case BFD_RELOC_MOXIE_10_PCREL:
      code = fixP->fx_r_type;
      break;
    default:
      as_bad_where (fixP->fx_file, fixP->fx_line,
		    _("Semantics error.  This type of operand can not be relocated, it must be an assembly-time constant"));
      return 0;
    }

  relP = xmalloc (sizeof (arelent));
  gas_assert (relP != 0);
  relP->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
  *relP->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy);
  relP->address = fixP->fx_frag->fr_address + fixP->fx_where;

  relP->addend = fixP->fx_offset;

  /* This is the standard place for KLUDGEs to work around bugs in
     bfd_install_relocation (first such note in the documentation
     appears with binutils-2.8).

     That function bfd_install_relocation does the wrong thing with
     putting stuff into the addend of a reloc (it should stay out) for a
     weak symbol.  The really bad thing is that it adds the
     "segment-relative offset" of the symbol into the reloc.  In this
     case, the reloc should instead be relative to the symbol with no
     other offset than the assembly code shows; and since the symbol is
     weak, any local definition should be ignored until link time (or
     thereafter).
     To wit:  weaksym+42  should be weaksym+42 in the reloc,
     not weaksym+(offset_from_segment_of_local_weaksym_definition)

     To "work around" this, we subtract the segment-relative offset of
     "known" weak symbols.  This evens out the extra offset.

     That happens for a.out but not for ELF, since for ELF,
     bfd_install_relocation uses the "special function" field of the
     howto, and does not execute the code that needs to be undone.  */

  if (OUTPUT_FLAVOR == bfd_target_aout_flavour
      && fixP->fx_addsy && S_IS_WEAK (fixP->fx_addsy)
      && ! bfd_is_und_section (S_GET_SEGMENT (fixP->fx_addsy)))
    {
      relP->addend -= S_GET_VALUE (fixP->fx_addsy);
    }

  relP->howto = bfd_reloc_type_lookup (stdoutput, code);
  if (! relP->howto)
    {
      const char *name;

      name = S_GET_NAME (fixP->fx_addsy);
      if (name == NULL)
	name = _("<unknown>");
      as_fatal (_("Cannot generate relocation type for symbol %s, code %s"),
		name, bfd_get_reloc_code_name (code));
    }

  return relP;
}

/* Decide from what point a pc-relative relocation is relative to,
   relative to the pc-relative fixup.  Er, relatively speaking.  */
long
md_pcrel_from (fixS *fixP)
{
  valueT addr = fixP->fx_where + fixP->fx_frag->fr_address;

  switch (fixP->fx_r_type)
    {
    case BFD_RELOC_32:
      return addr + 4;
    case BFD_RELOC_MOXIE_10_PCREL:
      /* Offset is from the end of the instruction.  */
      return addr + 2;
    default:
      abort ();
      return addr;
    }
}
Commit	Line	Data
20135e4c	1	/* tc-moxie.c -- Assemble code for moxie
e202fa84	2	Copyright 2009, 2012
20135e4c NC	3	Free Software Foundation, Inc.
	4
	5	This file is part of GAS, the GNU Assembler.
	6
	7	GAS is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 3, or (at your option)
	10	any later version.
	11
	12	GAS is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GAS; see the file COPYING. If not, write to
	19	the Free Software Foundation, 51 Franklin Street - Fifth Floor,
	20	Boston, MA 02110-1301, USA. */
	21
	22	/* Contributed by Anthony Green <green@moxielogic.com>. */
	23
	24	#include "as.h"
	25	#include "safe-ctype.h"
	26	#include "opcode/moxie.h"
	27	#include "elf/moxie.h"
	28
	29	extern const moxie_opc_info_t moxie_opc_info[128];
	30
	31	const char comment_chars[] = "#";
	32	const char line_separator_chars[] = ";";
	33	const char line_comment_chars[] = "#";
	34
	35	static int pending_reloc;
	36	static struct hash_control *opcode_hash_control;
	37
	38	const pseudo_typeS md_pseudo_table[] =
	39	{
	40	{0, 0, 0}
	41	};
	42
	43	const char FLT_CHARS[] = "rRsSfFdDxXpP";
	44	const char EXP_CHARS[] = "eE";
	45
e202fa84 AG	46	static valueT md_chars_to_number (char * buf, int n);
	47
	48	/* Byte order. */
	49	extern int target_big_endian;
	50	const char *moxie_target_format = DEFAULT_TARGET_FORMAT;
f865a31d	51
20135e4c NC	52	void
	53	md_operand (expressionS *op __attribute__((unused)))
	54	{
	55	/* Empty for now. */
	56	}
	57
	58	/* This function is called once, at assembler startup time. It sets
	59	up the hash table with all the opcodes in it, and also initializes
	60	some aliases for compatibility with other assemblers. */
	61
	62	void
	63	md_begin (void)
	64	{
	65	int count;
	66	const moxie_opc_info_t *opcode;
	67	opcode_hash_control = hash_new ();
	68
	69	/* Insert names into hash table. */
	70	for (count = 0, opcode = moxie_form1_opc_info; count++ < 64; opcode++)
	71	hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
	72
	73	for (count = 0, opcode = moxie_form2_opc_info; count++ < 4; opcode++)
	74	hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
	75
f865a31d	76	for (count = 0, opcode = moxie_form3_opc_info; count++ < 10; opcode++)
20135e4c NC	77	hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
	78
	79	bfd_set_arch_mach (stdoutput, TARGET_ARCH, 0);
	80	}
	81
	82	/* Parse an expression and then restore the input line pointer. */
	83
	84	static char *
	85	parse_exp_save_ilp (char s, expressionS op)
	86	{
	87	char *save = input_line_pointer;
	88
	89	input_line_pointer = s;
	90	expression (op);
	91	s = input_line_pointer;
	92	input_line_pointer = save;
	93	return s;
	94	}
	95
	96	static int
	97	parse_register_operand (char **ptr)
	98	{
	99	int reg;
	100	char s = ptr;
	101
	102	if (*s != '$')
	103	{
20203fb9	104	as_bad (_("expecting register"));
20135e4c NC	105	ignore_rest_of_line ();
	106	return -1;
	107	}
	108	if (s[1] == 'f' && s[2] == 'p')
	109	{
	110	*ptr += 3;
	111	return 0;
	112	}
	113	if (s[1] == 's' && s[2] == 'p')
	114	{
	115	*ptr += 3;
	116	return 1;
	117	}
	118	if (s[1] == 'r')
	119	{
	120	reg = s[2] - '0';
	121	if ((reg < 0) \|\| (reg > 9))
	122	{
20203fb9	123	as_bad (_("illegal register number"));
20135e4c NC	124	ignore_rest_of_line ();
	125	return -1;
	126	}
	127	if (reg == 1)
	128	{
	129	int r2 = s[3] - '0';
	130	if ((r2 >= 0) && (r2 <= 3))
	131	{
	132	reg = 10 + r2;
	133	*ptr += 1;
	134	}
	135	}
	136	}
	137	else
	138	{
20203fb9	139	as_bad (_("illegal register number"));
20135e4c NC	140	ignore_rest_of_line ();
	141	return -1;
	142	}
	143
	144	*ptr += 3;
	145
	146	return reg + 2;
	147	}
	148
	149	/* This is the guts of the machine-dependent assembler. STR points to
	150	a machine dependent instruction. This function is supposed to emit
	151	the frags/bytes it assembles to. */
	152
	153	void
	154	md_assemble (char *str)
	155	{
	156	char *op_start;
	157	char *op_end;
	158
	159	moxie_opc_info_t *opcode;
	160	char *p;
	161	char pend;
	162
	163	unsigned short iword = 0;
	164
	165	int nlen = 0;
	166
	167	/* Drop leading whitespace. */
	168	while (*str == ' ')
	169	str++;
	170
	171	/* Find the op code end. */
	172	op_start = str;
	173	for (op_end = str;
	174	op_end && !is_end_of_line[op_end & 0xff] && *op_end != ' ';
	175	op_end++)
	176	nlen++;
	177
	178	pend = *op_end;
	179	*op_end = 0;
	180
	181	if (nlen == 0)
	182	as_bad (_("can't find opcode "));
	183	opcode = (moxie_opc_info_t *) hash_find (opcode_hash_control, op_start);
	184	*op_end = pend;
	185
	186	if (opcode == NULL)
	187	{
	188	as_bad (_("unknown opcode %s"), op_start);
	189	return;
	190	}
	191
	192	p = frag_more (2);
	193
	194	switch (opcode->itype)
	195	{
	196	case MOXIE_F2_A8V:
	197	iword = (1<<15) \| (opcode->opcode << 12);
	198	while (ISSPACE (*op_end))
	199	op_end++;
	200	{
	201	expressionS arg;
	202	int reg;
	203	reg = parse_register_operand (&op_end);
204	iword += (reg << 8);
205	if (*op_end != ',')
2cbd2211	206	as_warn (_("expecting comma delimited register operands"));
20135e4c NC	207	op_end++;
	208	op_end = parse_exp_save_ilp (op_end, &arg);
	209	fix_new_exp (frag_now,
e202fa84	210	((p + (target_big_endian ? 1 : 0)) - frag_now->fr_literal),
20135e4c NC	211	1,
	212	&arg,
	213	0,
	214	BFD_RELOC_8);
	215	}
	216	break;
	217	case MOXIE_F1_AB:
	218	iword = opcode->opcode << 8;
	219	while (ISSPACE (*op_end))
	220	op_end++;
	221	{
	222	int dest, src;
	223	dest = parse_register_operand (&op_end);
	224	if (*op_end != ',')
2cbd2211	225	as_warn (_("expecting comma delimited register operands"));
20135e4c NC	226	op_end++;
	227	src = parse_register_operand (&op_end);
	228	iword += (dest << 4) + src;
	229	while (ISSPACE (*op_end))
	230	op_end++;
	231	if (*op_end != 0)
20203fb9	232	as_warn (_("extra stuff on line ignored"));
20135e4c NC	233	}
	234	break;
	235	case MOXIE_F1_A4:
	236	iword = opcode->opcode << 8;
	237	while (ISSPACE (*op_end))
	238	op_end++;
	239	{
	240	expressionS arg;
	241	char *where;
	242	int regnum;
	243
	244	regnum = parse_register_operand (&op_end);
	245	while (ISSPACE (*op_end))
	246	op_end++;
	247
	248	iword += (regnum << 4);
	249
	250	if (*op_end != ',')
	251	{
20203fb9	252	as_bad (_("expecting comma delimited operands"));
20135e4c NC	253	ignore_rest_of_line ();
	254	return;
	255	}
	256	op_end++;
	257
	258	op_end = parse_exp_save_ilp (op_end, &arg);
	259	where = frag_more (4);
	260	fix_new_exp (frag_now,
	261	(where - frag_now->fr_literal),
	262	4,
	263	&arg,
	264	0,
	265	BFD_RELOC_32);
	266	}
	267	break;
d7a5ed35	268	case MOXIE_F1_M:
20135e4c NC	269	case MOXIE_F1_4:
	270	iword = opcode->opcode << 8;
	271	while (ISSPACE (*op_end))
	272	op_end++;
	273	{
	274	expressionS arg;
	275	char *where;
	276
	277	op_end = parse_exp_save_ilp (op_end, &arg);
	278	where = frag_more (4);
	279	fix_new_exp (frag_now,
	280	(where - frag_now->fr_literal),
	281	4,
	282	&arg,
	283	0,
	284	BFD_RELOC_32);
	285	}
	286	break;
	287	case MOXIE_F1_NARG:
	288	iword = opcode->opcode << 8;
	289	while (ISSPACE (*op_end))
	290	op_end++;
	291	if (*op_end != 0)
20203fb9	292	as_warn (_("extra stuff on line ignored"));
20135e4c NC	293	break;
	294	case MOXIE_F1_A:
	295	iword = opcode->opcode << 8;
	296	while (ISSPACE (*op_end))
	297	op_end++;
	298	{
	299	int reg;
	300	reg = parse_register_operand (&op_end);
	301	while (ISSPACE (*op_end))
	302	op_end++;
	303	if (*op_end != 0)
20203fb9	304	as_warn (_("extra stuff on line ignored"));
20135e4c NC	305	iword += (reg << 4);
	306	}
	307	break;
	308	case MOXIE_F1_ABi:
	309	iword = opcode->opcode << 8;
	310	while (ISSPACE (*op_end))
	311	op_end++;
	312	{
	313	int a, b;
	314	a = parse_register_operand (&op_end);
	315	if (*op_end != ',')
2cbd2211	316	as_warn (_("expecting comma delimited register operands"));
20135e4c NC	317	op_end++;
	318	if (*op_end != '(')
	319	{
20203fb9	320	as_bad (_("expecting indirect register `($rA)'"));
20135e4c NC	321	ignore_rest_of_line ();
	322	return;
	323	}
	324	op_end++;
	325	b = parse_register_operand (&op_end);
	326	if (*op_end != ')')
	327	{
20203fb9	328	as_bad (_("missing closing parenthesis"));
20135e4c NC	329	ignore_rest_of_line ();
	330	return;
	331	}
	332	op_end++;
	333	iword += (a << 4) + b;
	334	while (ISSPACE (*op_end))
	335	op_end++;
	336	if (*op_end != 0)
20203fb9	337	as_warn (_("extra stuff on line ignored"));
20135e4c NC	338	}
	339	break;
	340	case MOXIE_F1_AiB:
	341	iword = opcode->opcode << 8;
	342	while (ISSPACE (*op_end))
	343	op_end++;
	344	{
	345	int a, b;
	346	if (*op_end != '(')
	347	{
20203fb9	348	as_bad (_("expecting indirect register `($rA)'"));
20135e4c NC	349	ignore_rest_of_line ();
	350	return;
	351	}
	352	op_end++;
	353	a = parse_register_operand (&op_end);
	354	if (*op_end != ')')
	355	{
20203fb9	356	as_bad (_("missing closing parenthesis"));
20135e4c NC	357	ignore_rest_of_line ();
	358	return;
	359	}
	360	op_end++;
	361	if (*op_end != ',')
2cbd2211	362	as_warn (_("expecting comma delimited register operands"));
20135e4c NC	363	op_end++;
	364	b = parse_register_operand (&op_end);
	365	iword += (a << 4) + b;
	366	while (ISSPACE (*op_end))
	367	op_end++;
	368	if (*op_end != 0)
20203fb9	369	as_warn (_("extra stuff on line ignored"));
20135e4c NC	370	}
	371	break;
	372	case MOXIE_F1_4A:
	373	iword = opcode->opcode << 8;
	374	while (ISSPACE (*op_end))
	375	op_end++;
	376	{
	377	expressionS arg;
	378	char *where;
	379	int a;
	380
	381	op_end = parse_exp_save_ilp (op_end, &arg);
	382	where = frag_more (4);
	383	fix_new_exp (frag_now,
	384	(where - frag_now->fr_literal),
	385	4,
	386	&arg,
	387	0,
	388	BFD_RELOC_32);
	389
	390	if (*op_end != ',')
	391	{
20203fb9	392	as_bad (_("expecting comma delimited operands"));
20135e4c NC	393	ignore_rest_of_line ();
	394	return;
	395	}
	396	op_end++;
	397
	398	a = parse_register_operand (&op_end);
	399	while (ISSPACE (*op_end))
	400	op_end++;
	401	if (*op_end != 0)
20203fb9	402	as_warn (_("extra stuff on line ignored"));
20135e4c NC	403
	404	iword += (a << 4);
	405	}
	406	break;
	407	case MOXIE_F1_ABi4:
	408	iword = opcode->opcode << 8;
	409	while (ISSPACE (*op_end))
	410	op_end++;
	411	{
	412	expressionS arg;
	413	char *offset;
	414	int a, b;
	415
	416	a = parse_register_operand (&op_end);
	417	while (ISSPACE (*op_end))
	418	op_end++;
	419
	420	if (*op_end != ',')
	421	{
20203fb9	422	as_bad (_("expecting comma delimited operands"));
20135e4c NC	423	ignore_rest_of_line ();
	424	return;
	425	}
	426	op_end++;
	427
	428	op_end = parse_exp_save_ilp (op_end, &arg);
	429	offset = frag_more (4);
	430	fix_new_exp (frag_now,
	431	(offset - frag_now->fr_literal),
	432	4,
	433	&arg,
	434	0,
	435	BFD_RELOC_32);
	436
	437	if (*op_end != '(')
	438	{
20203fb9	439	as_bad (_("expecting indirect register `($rX)'"));
20135e4c NC	440	ignore_rest_of_line ();
	441	return;
	442	}
	443	op_end++;
	444	b = parse_register_operand (&op_end);
	445	if (*op_end != ')')
	446	{
20203fb9	447	as_bad (_("missing closing parenthesis"));
20135e4c NC	448	ignore_rest_of_line ();
	449	return;
	450	}
	451	op_end++;
	452
	453	while (ISSPACE (*op_end))
	454	op_end++;
	455	if (*op_end != 0)
20203fb9	456	as_warn (_("extra stuff on line ignored"));
20135e4c NC	457
	458	iword += (a << 4) + b;
	459	}
	460	break;
	461	case MOXIE_F1_AiB4:
	462	iword = opcode->opcode << 8;
	463	while (ISSPACE (*op_end))
	464	op_end++;
	465	{
	466	expressionS arg;
	467	char *offset;
	468	int a, b;
	469
	470	op_end = parse_exp_save_ilp (op_end, &arg);
	471	offset = frag_more (4);
	472	fix_new_exp (frag_now,
	473	(offset - frag_now->fr_literal),
	474	4,
	475	&arg,
	476	0,
	477	BFD_RELOC_32);
	478
	479	if (*op_end != '(')
	480	{
20203fb9	481	as_bad (_("expecting indirect register `($rX)'"));
20135e4c NC	482	ignore_rest_of_line ();
	483	return;
	484	}
	485	op_end++;
	486	a = parse_register_operand (&op_end);
	487	if (*op_end != ')')
	488	{
20203fb9	489	as_bad (_("missing closing parenthesis"));
20135e4c NC	490	ignore_rest_of_line ();
	491	return;
	492	}
	493	op_end++;
	494
	495	if (*op_end != ',')
	496	{
20203fb9	497	as_bad (_("expecting comma delimited operands"));
20135e4c NC	498	ignore_rest_of_line ();
	499	return;
	500	}
	501	op_end++;
	502
	503	b = parse_register_operand (&op_end);
	504	while (ISSPACE (*op_end))
	505	op_end++;
	506
	507	while (ISSPACE (*op_end))
	508	op_end++;
	509	if (*op_end != 0)
20203fb9	510	as_warn (_("extra stuff on line ignored"));
20135e4c NC	511
	512	iword += (a << 4) + b;
	513	}
	514	break;
	515	case MOXIE_F2_NARG:
	516	iword = opcode->opcode << 12;
	517	while (ISSPACE (*op_end))
	518	op_end++;
	519	if (*op_end != 0)
20203fb9	520	as_warn (_("extra stuff on line ignored"));
20135e4c	521	break;
f865a31d AG	522	case MOXIE_F3_PCREL:
	523	iword = (3<<14) \| (opcode->opcode << 10);
	524	while (ISSPACE (*op_end))
	525	op_end++;
	526	{
	527	expressionS arg;
	528
	529	op_end = parse_exp_save_ilp (op_end, &arg);
	530	fix_new_exp (frag_now,
	531	(p - frag_now->fr_literal),
	532	2,
	533	&arg,
	534	TRUE,
	535	BFD_RELOC_MOXIE_10_PCREL);
	536	}
	537	break;
20135e4c	538	default:
20203fb9	539	abort ();
20135e4c NC	540	}
	541
	542	md_number_to_chars (p, iword, 2);
	543
	544	while (ISSPACE (*op_end))
	545	op_end++;
	546
	547	if (*op_end != 0)
20203fb9	548	as_warn (_("extra stuff on line ignored"));
20135e4c NC	549
20135e4c NC	550	if (pending_reloc)
20203fb9	551	as_bad (_("Something forgot to clean up\n"));
20135e4c NC	552	}
	553
	554	/* Turn a string in input_line_pointer into a floating point constant
	555	of type type, and store the appropriate bytes in *LITP. The number
	556	of LITTLENUMS emitted is stored in *SIZEP . An error message is
	557	returned, or NULL on OK. */
	558
	559	char *
	560	md_atof (int type, char litP, int sizeP)
	561	{
	562	int prec;
	563	LITTLENUM_TYPE words[4];
	564	char *t;
	565	int i;
	566
	567	switch (type)
	568	{
	569	case 'f':
	570	prec = 2;
	571	break;
	572
	573	case 'd':
	574	prec = 4;
	575	break;
	576
	577	default:
	578	*sizeP = 0;
	579	return _("bad call to md_atof");
	580	}
	581
	582	t = atof_ieee (input_line_pointer, type, words);
	583	if (t)
	584	input_line_pointer = t;
	585
	586	sizeP = prec 2;
	587
	588	for (i = prec - 1; i >= 0; i--)
	589	{
	590	md_number_to_chars (litP, (valueT) words[i], 2);
	591	litP += 2;
	592	}
	593
	594	return NULL;
	595	}
e202fa84 AG	596
	597	enum options
	598	{
	599	OPTION_EB = OPTION_MD_BASE,
	600	OPTION_EL,
	601	};
20135e4c NC	602
	603	struct option md_longopts[] =
	604	{
e202fa84 AG	605	{ "EB", no_argument, NULL, OPTION_EB},
	606	{ "EL", no_argument, NULL, OPTION_EL},
	607	{ NULL, no_argument, NULL, 0}
20135e4c	608	};
e202fa84	609
20135e4c	610	size_t md_longopts_size = sizeof (md_longopts);
e202fa84 AG	611	\f
e202fa84 AG	612	const char *md_shortopts = "";
20135e4c	613
20135e4c NC	614	int
	615	md_parse_option (int c ATTRIBUTE_UNUSED, char *arg ATTRIBUTE_UNUSED)
	616	{
e202fa84 AG	617	switch (c)
	618	{
	619	case OPTION_EB:
	620	target_big_endian = 1;
	621	moxie_target_format = "elf32-bigmoxie";
	622	break;
	623	case OPTION_EL:
	624	target_big_endian = 0;
	625	moxie_target_format = "elf32-littlemoxie";
	626	break;
	627	default:
	628	return 0;
	629	}
	630
	631	return 1;
20135e4c NC	632	}
	633
	634	void
	635	md_show_usage (FILE *stream ATTRIBUTE_UNUSED)
	636	{
e202fa84 AG	637	fprintf (stream, _("\
	638	-EB assemble for a big endian system (default)\n\
	639	-EL assemble for a little endian system\n"));
20135e4c NC	640	}
	641
	642	/* Apply a fixup to the object file. */
	643
	644	void
f865a31d AG	645	md_apply_fix (fixS *fixP ATTRIBUTE_UNUSED,
f865a31d AG	646	valueT * valP ATTRIBUTE_UNUSED, segT seg ATTRIBUTE_UNUSED)
20135e4c NC	647	{
	648	char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
	649	long val = *valP;
f865a31d	650	long newval;
20135e4c	651	long max, min;
20135e4c NC	652
20135e4c NC	653	max = min = 0;
20135e4c NC	654	switch (fixP->fx_r_type)
	655	{
	656	case BFD_RELOC_32:
e202fa84 AG	657	if (target_big_endian)
	658	{
	659	buf[0] = val >> 24;
	660	buf[1] = val >> 16;
	661	buf[2] = val >> 8;
	662	buf[3] = val >> 0;
	663	}
	664	else
	665	{
	666	buf[3] = val >> 24;
	667	buf[2] = val >> 16;
	668	buf[1] = val >> 8;
	669	buf[0] = val >> 0;
	670	}
	671	buf += 4;
20135e4c NC	672	break;
	673
	674	case BFD_RELOC_16:
e202fa84 AG	675	if (target_big_endian)
	676	{
	677	buf[0] = val >> 8;
	678	buf[1] = val >> 0;
	679	}
	680	else
	681	{
	682	buf[1] = val >> 8;
	683	buf[0] = val >> 0;
	684	}
	685	buf += 2;
20135e4c NC	686	break;
	687
	688	case BFD_RELOC_8:
	689	*buf++ = val;
	690	break;
	691
f865a31d AG	692	case BFD_RELOC_MOXIE_10_PCREL:
	693	if (!val)
	694	break;
	695	if (val < -1024 \|\| val > 1022)
	696	as_bad_where (fixP->fx_file, fixP->fx_line,
	697	_("pcrel too far BFD_RELOC_MOXIE_10"));
	698	/* 11 bit offset even numbered, so we remove right bit. */
	699	val >>= 1;
	700	newval = md_chars_to_number (buf, 2);
	701	newval \|= val & 0x03ff;
	702	md_number_to_chars (buf, newval, 2);
	703	break;
	704
20135e4c NC	705	default:
	706	abort ();
	707	}
	708
	709	if (max != 0 && (val < min \|\| val > max))
	710	as_bad_where (fixP->fx_file, fixP->fx_line, _("offset out of range"));
	711
	712	if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
	713	fixP->fx_done = 1;
	714	}
	715
e202fa84	716	/* Put number into target byte order. */
20135e4c NC	717
20135e4c NC	718	void
e202fa84	719	md_number_to_chars (char * ptr, valueT use, int nbytes)
20135e4c	720	{
e202fa84 AG	721	if (target_big_endian)
	722	number_to_chars_bigendian (ptr, use, nbytes);
	723	else
	724	number_to_chars_littleendian (ptr, use, nbytes);
20135e4c NC	725	}
20135e4c NC	726
f865a31d AG	727	/* Convert from target byte order to host byte order. */
f865a31d AG	728
e202fa84 AG	729	static valueT
e202fa84 AG	730	md_chars_to_number (char * buf, int n)
f865a31d	731	{
e202fa84 AG	732	valueT result = 0;
e202fa84 AG	733	unsigned char * where = (unsigned char *) buf;
f865a31d	734
e202fa84 AG	735	if (target_big_endian)
	736	{
	737	while (n--)
	738	{
	739	result <<= 8;
	740	result \|= (*where++ & 255);
	741	}
	742	}
	743	else
f865a31d	744	{
e202fa84 AG	745	while (n--)
	746	{
	747	result <<= 8;
	748	result \|= (where[n] & 255);
	749	}
f865a31d AG	750	}
f865a31d AG	751
e202fa84	752	return result;
f865a31d AG	753	}
f865a31d AG	754
20135e4c NC	755	/* Generate a machine-dependent relocation. */
	756	arelent *
	757	tc_gen_reloc (asection section ATTRIBUTE_UNUSED, fixS fixP)
	758	{
	759	arelent *relP;
	760	bfd_reloc_code_real_type code;
	761
	762	switch (fixP->fx_r_type)
	763	{
	764	case BFD_RELOC_32:
	765	code = fixP->fx_r_type;
	766	break;
f865a31d AG	767	case BFD_RELOC_MOXIE_10_PCREL:
	768	code = fixP->fx_r_type;
	769	break;
20135e4c NC	770	default:
	771	as_bad_where (fixP->fx_file, fixP->fx_line,
	772	_("Semantics error. This type of operand can not be relocated, it must be an assembly-time constant"));
	773	return 0;
	774	}
	775
	776	relP = xmalloc (sizeof (arelent));
9c2799c2	777	gas_assert (relP != 0);
20135e4c NC	778	relP->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
	779	*relP->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy);
	780	relP->address = fixP->fx_frag->fr_address + fixP->fx_where;
	781
	782	relP->addend = fixP->fx_offset;
	783
	784	/* This is the standard place for KLUDGEs to work around bugs in
	785	bfd_install_relocation (first such note in the documentation
	786	appears with binutils-2.8).
	787
	788	That function bfd_install_relocation does the wrong thing with
	789	putting stuff into the addend of a reloc (it should stay out) for a
	790	weak symbol. The really bad thing is that it adds the
	791	"segment-relative offset" of the symbol into the reloc. In this
	792	case, the reloc should instead be relative to the symbol with no
	793	other offset than the assembly code shows; and since the symbol is
	794	weak, any local definition should be ignored until link time (or
	795	thereafter).
	796	To wit: weaksym+42 should be weaksym+42 in the reloc,
	797	not weaksym+(offset_from_segment_of_local_weaksym_definition)
	798
	799	To "work around" this, we subtract the segment-relative offset of
	800	"known" weak symbols. This evens out the extra offset.
	801
	802	That happens for a.out but not for ELF, since for ELF,
	803	bfd_install_relocation uses the "special function" field of the
	804	howto, and does not execute the code that needs to be undone. */
	805
	806	if (OUTPUT_FLAVOR == bfd_target_aout_flavour
	807	&& fixP->fx_addsy && S_IS_WEAK (fixP->fx_addsy)
	808	&& ! bfd_is_und_section (S_GET_SEGMENT (fixP->fx_addsy)))
	809	{
	810	relP->addend -= S_GET_VALUE (fixP->fx_addsy);
	811	}
	812
	813	relP->howto = bfd_reloc_type_lookup (stdoutput, code);
	814	if (! relP->howto)
	815	{
	816	const char *name;
	817
	818	name = S_GET_NAME (fixP->fx_addsy);
	819	if (name == NULL)
	820	name = _("<unknown>");
	821	as_fatal (_("Cannot generate relocation type for symbol %s, code %s"),
	822	name, bfd_get_reloc_code_name (code));
	823	}
	824
	825	return relP;
	826	}
	827
	828	/* Decide from what point a pc-relative relocation is relative to,
	829	relative to the pc-relative fixup. Er, relatively speaking. */
	830	long
	831	md_pcrel_from (fixS *fixP)
	832	{
	833	valueT addr = fixP->fx_where + fixP->fx_frag->fr_address;
	834
20135e4c NC	835	switch (fixP->fx_r_type)
	836	{
	837	case BFD_RELOC_32:
	838	return addr + 4;
f865a31d	839	case BFD_RELOC_MOXIE_10_PCREL:
7078b409 AG	840	/* Offset is from the end of the instruction. */
7078b409 AG	841	return addr + 2;
20135e4c NC	842	default:
	843	abort ();
	844	return addr;
	845	}
	846	}