[thirdparty/binutils-gdb.git] / gas / config / tc-openrisc.c

/* tc-openrisc.c -- Assembler for the OpenRISC family.
   Copyright (C) 2001-2014 Free Software Foundation, Inc.
   Contributed by Johan Rydberg, jrydberg@opencores.org

   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.  */

#include "as.h"
#include "subsegs.h"
#include "symcat.h"
#include "opcodes/openrisc-desc.h"
#include "opcodes/openrisc-opc.h"
#include "cgen.h"

/* Structure to hold all of the different components describing
   an individual instruction.  */
typedef struct openrisc_insn openrisc_insn;

struct openrisc_insn
{
  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];
};


const char comment_chars[]        = "#";
const char line_comment_chars[]   = "#";
const char line_separator_chars[] = ";";
const char EXP_CHARS[]            = "eE";
const char FLT_CHARS[]            = "dD";

\f
#define OPENRISC_SHORTOPTS "m:"
const char * md_shortopts = OPENRISC_SHORTOPTS;

struct option md_longopts[] =
{
  {NULL, no_argument, NULL, 0}
};
size_t md_longopts_size = sizeof (md_longopts);

unsigned long openrisc_machine = 0; /* default */

int
md_parse_option (int c ATTRIBUTE_UNUSED, char * arg ATTRIBUTE_UNUSED)
{
  return 0;
}

void
md_show_usage (FILE * stream ATTRIBUTE_UNUSED)
{
}

static void
ignore_pseudo (int val ATTRIBUTE_UNUSED)
{
  discard_rest_of_line ();
}

const char openrisc_comment_chars [] = ";#";

/* The target specific pseudo-ops which we support.  */
const pseudo_typeS md_pseudo_table[] =
{
  { "word",     cons,           4 },
  { "proc",     ignore_pseudo,  0 },
  { "endproc",  ignore_pseudo,  0 },
  { NULL, 	NULL, 		0 }
};


\f
void
md_begin (void)
{
  /* Initialize the `cgen' interface.  */

  /* Set the machine number and endian.  */
  gas_cgen_cpu_desc = openrisc_cgen_cpu_open (CGEN_CPU_OPEN_MACHS, 0,
                                              CGEN_CPU_OPEN_ENDIAN,
                                              CGEN_ENDIAN_BIG,
                                              CGEN_CPU_OPEN_END);
  openrisc_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 (char * str)
{
  static int last_insn_had_delay_slot = 0;
  openrisc_insn insn;
  char *    errmsg;

  /* Initialize GAS's cgen interface for a new instruction.  */
  gas_cgen_init_parse ();

  insn.insn = openrisc_cgen_assemble_insn
    (gas_cgen_cpu_desc, str, & insn.fields, insn.buffer, & errmsg);

  if (!insn.insn)
    {
      as_bad ("%s", 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), 1, NULL);

  last_insn_had_delay_slot
    = CGEN_INSN_ATTR_VALUE (insn.insn, CGEN_INSN_DELAY_SLOT);
}


/* The syntax in the manual says constants begin with '#'.
   We just ignore it.  */

void
md_operand (expressionS * expressionP)
{
  if (* input_line_pointer == '#')
    {
      input_line_pointer ++;
      expression (expressionP);
    }
}

valueT
md_section_align (segT segment, valueT size)
{
  int align = bfd_get_section_alignment (stdoutput, segment);
  return ((size + (1 << align) - 1) & (-1 << align));
}

symbolS *
md_undefined_symbol (char * name ATTRIBUTE_UNUSED)
{
  return 0;
}

\f
/* Interface to relax_segment.  */

/* FIXME: Look through this.  */

const relax_typeS md_relax_table[] =
{
/* The fields are:
   1) most positive reach of this state,
   2) most negative reach of this state,
   3) how many bytes this mode will add to the size of the current frag
   4) which index into the table to try if we can't fit into this one.  */

  /* The first entry must be unused because an `rlx_more' value of zero ends
     each list.  */
  {1, 1, 0, 0},

  /* The displacement used by GAS is from the end of the 2 byte insn,
     so we subtract 2 from the following.  */
  /* 16 bit insn, 8 bit disp -> 10 bit range.
     This doesn't handle a branch in the right slot at the border:
     the "& -4" isn't taken into account.  It's not important enough to
     complicate things over it, so we subtract an extra 2 (or + 2 in -ve
     case).  */
  {511 - 2 - 2, -512 - 2 + 2, 0, 2 },
  /* 32 bit insn, 24 bit disp -> 26 bit range.  */
  {0x2000000 - 1 - 2, -0x2000000 - 2, 2, 0 },
  /* Same thing, but with leading nop for alignment.  */
  {0x2000000 - 1 - 2, -0x2000000 - 2, 4, 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 (fragS * fragP, segT segment)
{
  /* The only thing we have to handle here are symbols outside of the
     current segment.  They may be undefined or in a different segment in
     which case linker scripts may place them anywhere.
     However, we can't finish the fragment here and emit the reloc as insn
     alignment requirements may move the insn about.  */

  if (S_GET_SEGMENT (fragP->fr_symbol) != segment)
    {
      /* The symbol is undefined in this segment.
	 Change the relaxation subtype to the max allowable and leave
	 all further handling to md_convert_frag.  */
      fragP->fr_subtype = 2;

      {
	const CGEN_INSN * insn;
	int               i;

	/* Update the recorded insn.
	   Fortunately we don't have to look very far.
	   FIXME: Change this to record in the instruction the next higher
	   relaxable insn to use.  */
	for (i = 0, insn = fragP->fr_cgen.insn; i < 4; i++, insn++)
	  {
	    if ((strcmp (CGEN_INSN_MNEMONIC (insn),
			 CGEN_INSN_MNEMONIC (fragP->fr_cgen.insn))
		 == 0)
		&& CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED))
	      break;
	  }
	if (i == 4)
	  abort ();

	fragP->fr_cgen.insn = insn;
	return 2;
      }
    }

  return md_relax_table[fragP->fr_subtype].rlx_length;
}

/* *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 (bfd *   abfd ATTRIBUTE_UNUSED,
		 segT    sec  ATTRIBUTE_UNUSED,
		 fragS * fragP ATTRIBUTE_UNUSED)
{
  /* FIXME */
}

\f
/* Functions concerning relocs.  */

/* The location from which a PC relative jump should be calculated,
   given a PC relative reloc.  */

long
md_pcrel_from_section (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) & ~1;
}


/* 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 (const CGEN_INSN *    insn ATTRIBUTE_UNUSED,
		      const CGEN_OPERAND * operand,
		      fixS *               fixP)
{
  bfd_reloc_code_real_type type;

  switch (operand->type)
    {
    case OPENRISC_OPERAND_ABS_26:
      fixP->fx_pcrel = 0;
      type = BFD_RELOC_OPENRISC_ABS_26;
      goto emit;
    case OPENRISC_OPERAND_DISP_26:
      fixP->fx_pcrel = 1;
      type = BFD_RELOC_OPENRISC_REL_26;
      goto emit;

    case OPENRISC_OPERAND_HI16:
      type = BFD_RELOC_HI16;
      goto emit;

    case OPENRISC_OPERAND_LO16:
      type = BFD_RELOC_LO16;
      goto emit;

    emit:
      return type;

    default : /* avoid -Wall warning */
      break;
    }

  return BFD_RELOC_NONE;
}
\f
/* Write a value out to the object file, using the appropriate endianness.  */

void
md_number_to_chars (char * buf, valueT val, int n)
{
  number_to_chars_bigendian (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 (int type, char * litP, int *  sizeP)
{
  return ieee_md_atof (type, litP, sizeP, TRUE);
}

bfd_boolean
openrisc_fix_adjustable (fixS * fixP)
{
  /* We need the symbol name for the VTABLE entries.  */
  if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
      || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
    return 0;

  return 1;
}
Commit	Line	Data
c7e40348	1	/* tc-openrisc.c -- Assembler for the OpenRISC family.
4b95cf5c	2	Copyright (C) 2001-2014 Free Software Foundation, Inc.
c7e40348 NC	3	Contributed by Johan Rydberg, jrydberg@opencores.org
	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
ec2655a6	9	the Free Software Foundation; either version 3, or (at your option)
c7e40348 NC	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
4b4da160 NC	19	the Free Software Foundation, 51 Franklin Street - Fifth Floor,
4b4da160 NC	20	Boston, MA 02110-1301, USA. */
c7e40348	21
c7e40348 NC	22	#include "as.h"
	23	#include "subsegs.h"
	24	#include "symcat.h"
	25	#include "opcodes/openrisc-desc.h"
	26	#include "opcodes/openrisc-opc.h"
	27	#include "cgen.h"
	28
	29	/* Structure to hold all of the different components describing
	30	an individual instruction. */
	31	typedef struct openrisc_insn openrisc_insn;
	32
	33	struct openrisc_insn
	34	{
	35	const CGEN_INSN * insn;
	36	const CGEN_INSN * orig_insn;
	37	CGEN_FIELDS fields;
	38	#if CGEN_INT_INSN_P
	39	CGEN_INSN_INT buffer [1];
	40	#define INSN_VALUE(buf) (*(buf))
	41	#else
	42	unsigned char buffer [CGEN_MAX_INSN_SIZE];
	43	#define INSN_VALUE(buf) (buf)
	44	#endif
	45	char * addr;
	46	fragS * frag;
	47	int num_fixups;
	48	fixS * fixups [GAS_CGEN_MAX_FIXUPS];
	49	int indices [MAX_OPERAND_INSTANCES];
	50	};
	51
	52
	53	const char comment_chars[] = "#";
	54	const char line_comment_chars[] = "#";
	55	const char line_separator_chars[] = ";";
	56	const char EXP_CHARS[] = "eE";
	57	const char FLT_CHARS[] = "dD";
	58
	59	\f
	60	#define OPENRISC_SHORTOPTS "m:"
	61	const char * md_shortopts = OPENRISC_SHORTOPTS;
	62
	63	struct option md_longopts[] =
	64	{
	65	{NULL, no_argument, NULL, 0}
	66	};
	67	size_t md_longopts_size = sizeof (md_longopts);
	68
	69	unsigned long openrisc_machine = 0; /* default */
	70
	71	int
ea1562b3	72	md_parse_option (int c ATTRIBUTE_UNUSED, char * arg ATTRIBUTE_UNUSED)
c7e40348 NC	73	{
	74	return 0;
	75	}
	76
	77	void
ea1562b3	78	md_show_usage (FILE * stream ATTRIBUTE_UNUSED)
c7e40348 NC	79	{
	80	}
	81
	82	static void
ea1562b3	83	ignore_pseudo (int val ATTRIBUTE_UNUSED)
c7e40348 NC	84	{
	85	discard_rest_of_line ();
	86	}
	87
	88	const char openrisc_comment_chars [] = ";#";
	89
	90	/* The target specific pseudo-ops which we support. */
	91	const pseudo_typeS md_pseudo_table[] =
	92	{
	93	{ "word", cons, 4 },
	94	{ "proc", ignore_pseudo, 0 },
	95	{ "endproc", ignore_pseudo, 0 },
	96	{ NULL, NULL, 0 }
	97	};
	98
	99
	100	\f
	101	void
ea1562b3	102	md_begin (void)
c7e40348 NC	103	{
	104	/* Initialize the `cgen' interface. */
	105
	106	/* Set the machine number and endian. */
	107	gas_cgen_cpu_desc = openrisc_cgen_cpu_open (CGEN_CPU_OPEN_MACHS, 0,
	108	CGEN_CPU_OPEN_ENDIAN,
	109	CGEN_ENDIAN_BIG,
	110	CGEN_CPU_OPEN_END);
	111	openrisc_cgen_init_asm (gas_cgen_cpu_desc);
	112
	113	/* This is a callback from cgen to gas to parse operands. */
	114	cgen_set_parse_operand_fn (gas_cgen_cpu_desc, gas_cgen_parse_operand);
	115	}
	116
	117	void
ea1562b3	118	md_assemble (char * str)
c7e40348 NC	119	{
	120	static int last_insn_had_delay_slot = 0;
	121	openrisc_insn insn;
	122	char * errmsg;
	123
	124	/* Initialize GAS's cgen interface for a new instruction. */
	125	gas_cgen_init_parse ();
	126
	127	insn.insn = openrisc_cgen_assemble_insn
	128	(gas_cgen_cpu_desc, str, & insn.fields, insn.buffer, & errmsg);
	129
	130	if (!insn.insn)
	131	{
20203fb9	132	as_bad ("%s", errmsg);
c7e40348 NC	133	return;
	134	}
	135
	136	/* Doesn't really matter what we pass for RELAX_P here. */
	137	gas_cgen_finish_insn (insn.insn, insn.buffer,
	138	CGEN_FIELDS_BITSIZE (& insn.fields), 1, NULL);
	139
c7e40348 NC	140	last_insn_had_delay_slot
	141	= CGEN_INSN_ATTR_VALUE (insn.insn, CGEN_INSN_DELAY_SLOT);
	142	}
	143
	144
	145	/* The syntax in the manual says constants begin with '#'.
	146	We just ignore it. */
	147
	148	void
ea1562b3	149	md_operand (expressionS * expressionP)
c7e40348 NC	150	{
	151	if (* input_line_pointer == '#')
	152	{
	153	input_line_pointer ++;
	154	expression (expressionP);
	155	}
	156	}
	157
	158	valueT
ea1562b3	159	md_section_align (segT segment, valueT size)
c7e40348 NC	160	{
	161	int align = bfd_get_section_alignment (stdoutput, segment);
	162	return ((size + (1 << align) - 1) & (-1 << align));
	163	}
	164
	165	symbolS *
ea1562b3	166	md_undefined_symbol (char * name ATTRIBUTE_UNUSED)
c7e40348 NC	167	{
	168	return 0;
	169	}
	170
	171	\f
	172	/* Interface to relax_segment. */
	173
	174	/* FIXME: Look through this. */
	175
	176	const relax_typeS md_relax_table[] =
	177	{
	178	/* The fields are:
	179	1) most positive reach of this state,
	180	2) most negative reach of this state,
	181	3) how many bytes this mode will add to the size of the current frag
	182	4) which index into the table to try if we can't fit into this one. */
	183
	184	/* The first entry must be unused because an `rlx_more' value of zero ends
	185	each list. */
	186	{1, 1, 0, 0},
	187
	188	/* The displacement used by GAS is from the end of the 2 byte insn,
	189	so we subtract 2 from the following. */
	190	/* 16 bit insn, 8 bit disp -> 10 bit range.
	191	This doesn't handle a branch in the right slot at the border:
	192	the "& -4" isn't taken into account. It's not important enough to
	193	complicate things over it, so we subtract an extra 2 (or + 2 in -ve
	194	case). */
	195	{511 - 2 - 2, -512 - 2 + 2, 0, 2 },
	196	/* 32 bit insn, 24 bit disp -> 26 bit range. */
	197	{0x2000000 - 1 - 2, -0x2000000 - 2, 2, 0 },
	198	/* Same thing, but with leading nop for alignment. */
	199	{0x2000000 - 1 - 2, -0x2000000 - 2, 4, 0 }
	200	};
	201
c7e40348 NC	202	/* Return an initial guess of the length by which a fragment must grow to
	203	hold a branch to reach its destination.
	204	Also updates fr_type/fr_subtype as necessary.
	205
	206	Called just before doing relaxation.
	207	Any symbol that is now undefined will not become defined.
	208	The guess for fr_var is ACTUALLY the growth beyond fr_fix.
	209	Whatever we do to grow fr_fix or fr_var contributes to our returned value.
	210	Although it may not be explicit in the frag, pretend fr_var starts with a
	211	0 value. */
	212
	213	int
ea1562b3	214	md_estimate_size_before_relax (fragS * fragP, segT segment)
c7e40348	215	{
c7e40348 NC	216	/* The only thing we have to handle here are symbols outside of the
	217	current segment. They may be undefined or in a different segment in
	218	which case linker scripts may place them anywhere.
	219	However, we can't finish the fragment here and emit the reloc as insn
	220	alignment requirements may move the insn about. */
	221
	222	if (S_GET_SEGMENT (fragP->fr_symbol) != segment)
	223	{
	224	/* The symbol is undefined in this segment.
	225	Change the relaxation subtype to the max allowable and leave
	226	all further handling to md_convert_frag. */
	227	fragP->fr_subtype = 2;
	228
	229	{
	230	const CGEN_INSN * insn;
	231	int i;
	232
	233	/* Update the recorded insn.
	234	Fortunately we don't have to look very far.
	235	FIXME: Change this to record in the instruction the next higher
	236	relaxable insn to use. */
	237	for (i = 0, insn = fragP->fr_cgen.insn; i < 4; i++, insn++)
	238	{
	239	if ((strcmp (CGEN_INSN_MNEMONIC (insn),
	240	CGEN_INSN_MNEMONIC (fragP->fr_cgen.insn))
	241	== 0)
b11dcf4e	242	&& CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED))
c7e40348 NC	243	break;
	244	}
	245	if (i == 4)
	246	abort ();
	247
	248	fragP->fr_cgen.insn = insn;
	249	return 2;
	250	}
	251	}
	252
606ab118	253	return md_relax_table[fragP->fr_subtype].rlx_length;
c7e40348 NC	254	}
	255
	256	/* *fragP has been relaxed to its final size, and now needs to have
	257	the bytes inside it modified to conform to the new size.
	258
	259	Called after relaxation is finished.
	260	fragP->fr_type == rs_machine_dependent.
	261	fragP->fr_subtype is the subtype of what the address relaxed to. */
	262
	263	void
ea1562b3 NC	264	md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED,
	265	segT sec ATTRIBUTE_UNUSED,
	266	fragS * fragP ATTRIBUTE_UNUSED)
c7e40348 NC	267	{
	268	/* FIXME */
	269	}
	270
	271	\f
	272	/* Functions concerning relocs. */
	273
	274	/* The location from which a PC relative jump should be calculated,
	275	given a PC relative reloc. */
	276
	277	long
ea1562b3	278	md_pcrel_from_section (fixS * fixP, segT sec)
c7e40348 NC	279	{
	280	if (fixP->fx_addsy != (symbolS *) NULL
	281	&& (! S_IS_DEFINED (fixP->fx_addsy)
	282	\|\| S_GET_SEGMENT (fixP->fx_addsy) != sec))
ea1562b3 NC	283	/* The symbol is undefined (or is defined but not in this section).
	284	Let the linker figure it out. */
	285	return 0;
c7e40348 NC	286
	287	return (fixP->fx_frag->fr_address + fixP->fx_where) & ~1;
	288	}
	289
	290
	291	/* Return the bfd reloc type for OPERAND of INSN at fixup FIXP.
	292	Returns BFD_RELOC_NONE if no reloc type can be found.
	293	FIXP may be modified if desired. /
	294
	295	bfd_reloc_code_real_type
ea1562b3 NC	296	md_cgen_lookup_reloc (const CGEN_INSN * insn ATTRIBUTE_UNUSED,
	297	const CGEN_OPERAND * operand,
	298	fixS * fixP)
c7e40348 NC	299	{
	300	bfd_reloc_code_real_type type;
	301
	302	switch (operand->type)
	303	{
5d6255fe KH	304	case OPENRISC_OPERAND_ABS_26:
5d6255fe KH	305	fixP->fx_pcrel = 0;
c7e40348 NC	306	type = BFD_RELOC_OPENRISC_ABS_26;
c7e40348 NC	307	goto emit;
5d6255fe KH	308	case OPENRISC_OPERAND_DISP_26:
5d6255fe KH	309	fixP->fx_pcrel = 1;
c7e40348 NC	310	type = BFD_RELOC_OPENRISC_REL_26;
	311	goto emit;
	312
	313	case OPENRISC_OPERAND_HI16:
	314	type = BFD_RELOC_HI16;
	315	goto emit;
	316
	317	case OPENRISC_OPERAND_LO16:
	318	type = BFD_RELOC_LO16;
	319	goto emit;
	320
	321	emit:
	322	return type;
	323
	324	default : /* avoid -Wall warning */
	325	break;
	326	}
	327
	328	return BFD_RELOC_NONE;
	329	}
c7e40348 NC	330	\f
	331	/* Write a value out to the object file, using the appropriate endianness. */
	332
	333	void
ea1562b3	334	md_number_to_chars (char * buf, valueT val, int n)
c7e40348 NC	335	{
	336	number_to_chars_bigendian (buf, val, n);
	337	}
	338
	339	/* Turn a string in input_line_pointer into a floating point constant of type
	340	type, and store the appropriate bytes in *litP. The number of LITTLENUMS
	341	emitted is stored in *sizeP . An error message is returned, or NULL on OK.
	342	*/
	343
	344	/* Equal to MAX_PRECISION in atof-ieee.c */
	345	#define MAX_LITTLENUMS 6
	346
	347	char *
ea1562b3	348	md_atof (int type, char * litP, int * sizeP)
c7e40348	349	{
499ac353	350	return ieee_md_atof (type, litP, sizeP, TRUE);
c7e40348 NC	351	}
c7e40348 NC	352
b34976b6	353	bfd_boolean
ea1562b3	354	openrisc_fix_adjustable (fixS * fixP)
c7e40348	355	{
ea1562b3	356	/* We need the symbol name for the VTABLE entries. */
c7e40348 NC	357	if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
c7e40348 NC	358	\|\| fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
5d6255fe	359	return 0;
c7e40348 NC	360
	361	return 1;
	362	}