[deliverable/binutils-gdb.git] / gas / config / obj-bout.c

/* b.out object file format
   Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1996, 2000
   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.  */

#include "as.h"
#include "obstack.h"

/* In: segT   Out: N_TYPE bits  */
const short seg_N_TYPE[] =
{
  N_ABS,
  N_TEXT,
  N_DATA,
  N_BSS,
  N_UNDF,			/* unknown  */
  N_UNDF,			/* error  */
  N_UNDF,			/* expression  */
  N_UNDF,			/* debug  */
  N_UNDF,			/* ntv  */
  N_UNDF,			/* ptv  */
  N_REGISTER,			/* register  */
};

const segT N_TYPE_seg[N_TYPE + 2] =
{				/* N_TYPE == 0x1E = 32-2  */
  SEG_UNKNOWN,			/* N_UNDF == 0  */
  SEG_GOOF,
  SEG_ABSOLUTE,			/* N_ABS == 2  */
  SEG_GOOF,
  SEG_TEXT,			/* N_TEXT == 4  */
  SEG_GOOF,
  SEG_DATA,			/* N_DATA == 6  */
  SEG_GOOF,
  SEG_BSS,			/* N_BSS == 8  */
  SEG_GOOF,
  SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
  SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
  SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
  SEG_REGISTER,			/* dummy N_REGISTER for regs = 30  */
  SEG_GOOF,
};

static void obj_bout_line PARAMS ((int));

const pseudo_typeS obj_pseudo_table[] =
{
  {"line", obj_bout_line, 0},	/* Source code line number.  */

/* coff debugging directives.  Currently ignored silently.  */
  {"def", s_ignore, 0},
  {"dim", s_ignore, 0},
  {"endef", s_ignore, 0},
  {"ln", s_ignore, 0},
  {"scl", s_ignore, 0},
  {"size", s_ignore, 0},
  {"tag", s_ignore, 0},
  {"type", s_ignore, 0},
  {"val", s_ignore, 0},

/* other stuff we don't handle */
  {"ABORT", s_ignore, 0},
  {"ident", s_ignore, 0},

  {NULL}			/* End sentinel.  */
};

/* Relocation.  */

/* Crawl along a fixS chain. Emit the segment's relocations.  */

void
obj_emit_relocations (where, fixP, segment_address_in_file)
     char **where;
     fixS *fixP;		/* Fixup chain for this segment.  */
     relax_addressT segment_address_in_file;
{
  for (; fixP; fixP = fixP->fx_next)
    {
      if (fixP->fx_done == 0
	  || fixP->fx_r_type != NO_RELOC)
	{
	  symbolS *sym;

	  sym = fixP->fx_addsy;
	  while (sym->sy_value.X_op == O_symbol
		 && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym)))
	    sym = sym->sy_value.X_add_symbol;
	  fixP->fx_addsy = sym;

	  tc_bout_fix_to_chars (*where, fixP, segment_address_in_file);
	  *where += sizeof (struct relocation_info);
	}			/* if there's a symbol  */
    }				/* for each fixup  */
}

/* Aout file generation & utilities .  */

/* Convert a lvalue to machine dependent data.  */

void
obj_header_append (where, headers)
     char **where;
     object_headers *headers;
{
  /* Always leave in host byte order.  */

  headers->header.a_talign = section_alignment[SEG_TEXT];

  /* Force to at least 2.  */
  if (headers->header.a_talign < 2)
    {
      headers->header.a_talign = 2;
    }

  headers->header.a_dalign = section_alignment[SEG_DATA];
  headers->header.a_balign = section_alignment[SEG_BSS];

  headers->header.a_tload = 0;
  headers->header.a_dload =
    md_section_align (SEG_DATA, H_GET_TEXT_SIZE (headers));

  headers->header.a_relaxable = linkrelax;

#ifdef CROSS_COMPILE
  md_number_to_chars (*where, headers->header.a_magic, sizeof (headers->header.a_magic));
  *where += sizeof (headers->header.a_magic);
  md_number_to_chars (*where, headers->header.a_text, sizeof (headers->header.a_text));
  *where += sizeof (headers->header.a_text);
  md_number_to_chars (*where, headers->header.a_data, sizeof (headers->header.a_data));
  *where += sizeof (headers->header.a_data);
  md_number_to_chars (*where, headers->header.a_bss, sizeof (headers->header.a_bss));
  *where += sizeof (headers->header.a_bss);
  md_number_to_chars (*where, headers->header.a_syms, sizeof (headers->header.a_syms));
  *where += sizeof (headers->header.a_syms);
  md_number_to_chars (*where, headers->header.a_entry, sizeof (headers->header.a_entry));
  *where += sizeof (headers->header.a_entry);
  md_number_to_chars (*where, headers->header.a_trsize, sizeof (headers->header.a_trsize));
  *where += sizeof (headers->header.a_trsize);
  md_number_to_chars (*where, headers->header.a_drsize, sizeof (headers->header.a_drsize));
  *where += sizeof (headers->header.a_drsize);
  md_number_to_chars (*where, headers->header.a_tload, sizeof (headers->header.a_tload));
  *where += sizeof (headers->header.a_tload);
  md_number_to_chars (*where, headers->header.a_dload, sizeof (headers->header.a_dload));
  *where += sizeof (headers->header.a_dload);
  md_number_to_chars (*where, headers->header.a_talign, sizeof (headers->header.a_talign));
  *where += sizeof (headers->header.a_talign);
  md_number_to_chars (*where, headers->header.a_dalign, sizeof (headers->header.a_dalign));
  *where += sizeof (headers->header.a_dalign);
  md_number_to_chars (*where, headers->header.a_balign, sizeof (headers->header.a_balign));
  *where += sizeof (headers->header.a_balign);
  md_number_to_chars (*where, headers->header.a_relaxable, sizeof (headers->header.a_relaxable));
  *where += sizeof (headers->header.a_relaxable);
#else /* ! CROSS_COMPILE */
  append (where, (char *) &headers->header, sizeof (headers->header));
#endif /* ! CROSS_COMPILE */
}

void
obj_symbol_to_chars (where, symbolP)
     char **where;
     symbolS *symbolP;
{
  md_number_to_chars ((char *) &(S_GET_OFFSET (symbolP)),
		      S_GET_OFFSET (symbolP),
		      sizeof (S_GET_OFFSET (symbolP)));

  md_number_to_chars ((char *) &(S_GET_DESC (symbolP)),
		      S_GET_DESC (symbolP),
		      sizeof (S_GET_DESC (symbolP)));

  md_number_to_chars ((char *) &symbolP->sy_symbol.n_value,
		      S_GET_VALUE (symbolP),
		      sizeof (symbolP->sy_symbol.n_value));

  append (where, (char *) &symbolP->sy_symbol, sizeof (obj_symbol_type));
}

void
obj_emit_symbols (where, symbol_rootP)
     char **where;
     symbolS *symbol_rootP;
{
  symbolS *symbolP;

  /* Emit all symbols left in the symbol chain.  */
  for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
    {
      /* Used to save the offset of the name.  It is used to point to
	 the string in memory but must be a file offset.  */
      char *temp;

      temp = S_GET_NAME (symbolP);
      S_SET_OFFSET (symbolP, symbolP->sy_name_offset);

      /* Any symbol still undefined and is not a dbg symbol is made N_EXT.  */
      if (!S_IS_DEBUG (symbolP) && !S_IS_DEFINED (symbolP))
	S_SET_EXTERNAL (symbolP);

      obj_symbol_to_chars (where, symbolP);
      S_SET_NAME (symbolP, temp);
    }
}

void
obj_symbol_new_hook (symbolP)
     symbolS *symbolP;
{
  S_SET_OTHER (symbolP, 0);
  S_SET_DESC (symbolP, 0);
}

static void
obj_bout_line (ignore)
     int ignore;
{
  /* Assume delimiter is part of expression.  */
  /* BSD4.2 as fails with delightful bug, so we are not being
     incompatible here.  */
  new_logical_line ((char *) NULL, (int) (get_absolute_expression ()));
  demand_empty_rest_of_line ();
}

void
obj_read_begin_hook ()
{
}

void
obj_crawl_symbol_chain (headers)
     object_headers *headers;
{
  symbolS **symbolPP;
  symbolS *symbolP;
  int symbol_number = 0;

  tc_crawl_symbol_chain (headers);

  symbolPP = &symbol_rootP;	/* -> last symbol chain link.  */
  while ((symbolP = *symbolPP) != NULL)
    {
      if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_DATA))
	{
	  S_SET_SEGMENT (symbolP, SEG_TEXT);
	}			/* if pusing data into text  */

      resolve_symbol_value (symbolP, 1);

      /* Skip symbols which were equated to undefined or common
	 symbols.  */
      if (symbolP->sy_value.X_op == O_symbol
	  && (! S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)))
	{
	  *symbolPP = symbol_next (symbolP);
	  continue;
	}

      /* OK, here is how we decide which symbols go out into the
	 brave new symtab.  Symbols that do are:

	 * symbols with no name (stabd's?)
	 * symbols with debug info in their N_TYPE

	 Symbols that don't are:
	 * symbols that are registers
	 * symbols with \1 as their 3rd character (numeric labels)
	 * "local labels" as defined by S_LOCAL_NAME(name)
	 if the -L switch was passed to gas.

	 All other symbols are output.  We complain if a deleted
	 symbol was marked external.  */

      if (1
	  && !S_IS_REGISTER (symbolP)
	  && (!S_GET_NAME (symbolP)
	      || S_IS_DEBUG (symbolP)
#ifdef TC_I960
      /* FIXME-SOON this ifdef seems highly dubious to me.  xoxorich.  */
	      || !S_IS_DEFINED (symbolP)
	      || S_IS_EXTERNAL (symbolP)
#endif /* TC_I960 */
	      || (S_GET_NAME (symbolP)[0] != '\001'
		  && (flag_keep_locals || !S_LOCAL_NAME (symbolP)))))
	{
	  symbolP->sy_number = symbol_number++;

	  /* The + 1 after strlen account for the \0 at the end of
	     each string.  */
	  if (!S_IS_STABD (symbolP))
	    {
	      /* Ordinary case.  */
	      symbolP->sy_name_offset = string_byte_count;
	      string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
	    }
	  else			/* .Stabd case.  */
	    symbolP->sy_name_offset = 0;
	  symbolPP = &(symbolP->sy_next);
	}
      else
	{
	  if (S_IS_EXTERNAL (symbolP) || !S_IS_DEFINED (symbolP))
	    {
	      as_bad (_("Local symbol %s never defined"),
		      S_GET_NAME (symbolP));
	    }			/* Oops.  */

	  /* Unhook it from the chain.  */
	  *symbolPP = symbol_next (symbolP);
	}			/* if this symbol should be in the output  */
    }				/* for each symbol  */

  H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number);
}

/* Find strings by crawling along symbol table chain.  */

void
obj_emit_strings (where)
     char **where;
{
  symbolS *symbolP;

#ifdef CROSS_COMPILE
  /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
  md_number_to_chars (*where, string_byte_count, sizeof (string_byte_count));
  *where += sizeof (string_byte_count);
#else /* CROSS_COMPILE */
  append (where, (char *) &string_byte_count,
	  (unsigned long) sizeof (string_byte_count));
#endif /* CROSS_COMPILE */

  for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
    {
      if (S_GET_NAME (symbolP))
	append (where, S_GET_NAME (symbolP),
		(unsigned long) (strlen (S_GET_NAME (symbolP)) + 1));
    }				/* Walk symbol chain.  */
}
Commit	Line	Data
252b5132	1	/* b.out object file format
f7e42eb4	2	Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1996, 2000
252b5132 RH	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
	9	published by the Free Software Foundation; either version 2,
	10	or (at your option) any later version.
	11
	12	GAS is distributed in the hope that it will be useful, but
	13	WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	15	the GNU General Public License for more details.
	16
8fc2b121 ILT	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 the Free
	19	Software Foundation, 59 Temple Place - Suite 330, Boston, MA
351aa9f6	20	02111-1307, USA. */
252b5132 RH	21
	22	#include "as.h"
	23	#include "obstack.h"
351aa9f6 KH	24
	25	/* In: segT Out: N_TYPE bits */
	26	const short seg_N_TYPE[] =
252b5132 RH	27	{
	28	N_ABS,
	29	N_TEXT,
	30	N_DATA,
	31	N_BSS,
351aa9f6 KH	32	N_UNDF, /* unknown */
	33	N_UNDF, /* error */
	34	N_UNDF, /* expression */
	35	N_UNDF, /* debug */
	36	N_UNDF, /* ntv */
	37	N_UNDF, /* ptv */
	38	N_REGISTER, /* register */
252b5132 RH	39	};
	40
	41	const segT N_TYPE_seg[N_TYPE + 2] =
351aa9f6 KH	42	{ /* N_TYPE == 0x1E = 32-2 */
351aa9f6 KH	43	SEG_UNKNOWN, /* N_UNDF == 0 */
252b5132	44	SEG_GOOF,
351aa9f6	45	SEG_ABSOLUTE, /* N_ABS == 2 */
252b5132	46	SEG_GOOF,
351aa9f6	47	SEG_TEXT, /* N_TEXT == 4 */
252b5132	48	SEG_GOOF,
351aa9f6	49	SEG_DATA, /* N_DATA == 6 */
252b5132	50	SEG_GOOF,
351aa9f6	51	SEG_BSS, /* N_BSS == 8 */
252b5132 RH	52	SEG_GOOF,
	53	SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
	54	SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
	55	SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
351aa9f6	56	SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */
252b5132 RH	57	SEG_GOOF,
	58	};
	59
	60	static void obj_bout_line PARAMS ((int));
	61
	62	const pseudo_typeS obj_pseudo_table[] =
	63	{
351aa9f6	64	{"line", obj_bout_line, 0}, /* Source code line number. */
252b5132	65
351aa9f6	66	/* coff debugging directives. Currently ignored silently. */
252b5132 RH	67	{"def", s_ignore, 0},
	68	{"dim", s_ignore, 0},
	69	{"endef", s_ignore, 0},
	70	{"ln", s_ignore, 0},
	71	{"scl", s_ignore, 0},
	72	{"size", s_ignore, 0},
	73	{"tag", s_ignore, 0},
	74	{"type", s_ignore, 0},
	75	{"val", s_ignore, 0},
	76
	77	/* other stuff we don't handle */
	78	{"ABORT", s_ignore, 0},
	79	{"ident", s_ignore, 0},
	80
351aa9f6 KH	81	{NULL} /* End sentinel. */
	82	};
	83
	84	/* Relocation. */
252b5132	85
351aa9f6	86	/* Crawl along a fixS chain. Emit the segment's relocations. */
252b5132	87
252b5132 RH	88	void
	89	obj_emit_relocations (where, fixP, segment_address_in_file)
	90	char **where;
351aa9f6	91	fixS fixP; / Fixup chain for this segment. */
252b5132 RH	92	relax_addressT segment_address_in_file;
	93	{
	94	for (; fixP; fixP = fixP->fx_next)
	95	{
	96	if (fixP->fx_done == 0
	97	\|\| fixP->fx_r_type != NO_RELOC)
	98	{
	99	symbolS *sym;
	100
	101	sym = fixP->fx_addsy;
	102	while (sym->sy_value.X_op == O_symbol
	103	&& (! S_IS_DEFINED (sym) \|\| S_IS_COMMON (sym)))
	104	sym = sym->sy_value.X_add_symbol;
	105	fixP->fx_addsy = sym;
	106
	107	tc_bout_fix_to_chars (*where, fixP, segment_address_in_file);
	108	*where += sizeof (struct relocation_info);
351aa9f6 KH	109	} /* if there's a symbol */
	110	} /* for each fixup */
	111	}
252b5132	112
dcd619be	113	/* Aout file generation & utilities . */
252b5132	114
351aa9f6	115	/* Convert a lvalue to machine dependent data. */
252b5132	116
252b5132 RH	117	void
	118	obj_header_append (where, headers)
	119	char **where;
	120	object_headers *headers;
	121	{
351aa9f6	122	/* Always leave in host byte order. */
252b5132 RH	123
	124	headers->header.a_talign = section_alignment[SEG_TEXT];
	125
351aa9f6	126	/* Force to at least 2. */
252b5132 RH	127	if (headers->header.a_talign < 2)
	128	{
	129	headers->header.a_talign = 2;
351aa9f6	130	}
252b5132 RH	131
	132	headers->header.a_dalign = section_alignment[SEG_DATA];
	133	headers->header.a_balign = section_alignment[SEG_BSS];
	134
	135	headers->header.a_tload = 0;
351aa9f6 KH	136	headers->header.a_dload =
351aa9f6 KH	137	md_section_align (SEG_DATA, H_GET_TEXT_SIZE (headers));
252b5132 RH	138
	139	headers->header.a_relaxable = linkrelax;
	140
	141	#ifdef CROSS_COMPILE
	142	md_number_to_chars (*where, headers->header.a_magic, sizeof (headers->header.a_magic));
	143	*where += sizeof (headers->header.a_magic);
	144	md_number_to_chars (*where, headers->header.a_text, sizeof (headers->header.a_text));
	145	*where += sizeof (headers->header.a_text);
	146	md_number_to_chars (*where, headers->header.a_data, sizeof (headers->header.a_data));
	147	*where += sizeof (headers->header.a_data);
	148	md_number_to_chars (*where, headers->header.a_bss, sizeof (headers->header.a_bss));
	149	*where += sizeof (headers->header.a_bss);
	150	md_number_to_chars (*where, headers->header.a_syms, sizeof (headers->header.a_syms));
	151	*where += sizeof (headers->header.a_syms);
	152	md_number_to_chars (*where, headers->header.a_entry, sizeof (headers->header.a_entry));
	153	*where += sizeof (headers->header.a_entry);
	154	md_number_to_chars (*where, headers->header.a_trsize, sizeof (headers->header.a_trsize));
	155	*where += sizeof (headers->header.a_trsize);
	156	md_number_to_chars (*where, headers->header.a_drsize, sizeof (headers->header.a_drsize));
	157	*where += sizeof (headers->header.a_drsize);
	158	md_number_to_chars (*where, headers->header.a_tload, sizeof (headers->header.a_tload));
	159	*where += sizeof (headers->header.a_tload);
	160	md_number_to_chars (*where, headers->header.a_dload, sizeof (headers->header.a_dload));
	161	*where += sizeof (headers->header.a_dload);
	162	md_number_to_chars (*where, headers->header.a_talign, sizeof (headers->header.a_talign));
	163	*where += sizeof (headers->header.a_talign);
	164	md_number_to_chars (*where, headers->header.a_dalign, sizeof (headers->header.a_dalign));
	165	*where += sizeof (headers->header.a_dalign);
	166	md_number_to_chars (*where, headers->header.a_balign, sizeof (headers->header.a_balign));
	167	*where += sizeof (headers->header.a_balign);
	168	md_number_to_chars (*where, headers->header.a_relaxable, sizeof (headers->header.a_relaxable));
	169	*where += sizeof (headers->header.a_relaxable);
	170	#else /* ! CROSS_COMPILE */
	171	append (where, (char *) &headers->header, sizeof (headers->header));
	172	#endif /* ! CROSS_COMPILE */
351aa9f6	173	}
252b5132 RH	174
	175	void
	176	obj_symbol_to_chars (where, symbolP)
	177	char **where;
	178	symbolS *symbolP;
	179	{
351aa9f6 KH	180	md_number_to_chars ((char *) &(S_GET_OFFSET (symbolP)),
	181	S_GET_OFFSET (symbolP),
	182	sizeof (S_GET_OFFSET (symbolP)));
	183
	184	md_number_to_chars ((char *) &(S_GET_DESC (symbolP)),
	185	S_GET_DESC (symbolP),
	186	sizeof (S_GET_DESC (symbolP)));
	187
	188	md_number_to_chars ((char *) &symbolP->sy_symbol.n_value,
	189	S_GET_VALUE (symbolP),
	190	sizeof (symbolP->sy_symbol.n_value));
252b5132 RH	191
252b5132 RH	192	append (where, (char *) &symbolP->sy_symbol, sizeof (obj_symbol_type));
351aa9f6	193	}
252b5132 RH	194
	195	void
	196	obj_emit_symbols (where, symbol_rootP)
	197	char **where;
	198	symbolS *symbol_rootP;
	199	{
	200	symbolS *symbolP;
	201
351aa9f6	202	/* Emit all symbols left in the symbol chain. */
252b5132 RH	203	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
252b5132 RH	204	{
351aa9f6 KH	205	/* Used to save the offset of the name. It is used to point to
351aa9f6 KH	206	the string in memory but must be a file offset. */
252b5132 RH	207	char *temp;
	208
	209	temp = S_GET_NAME (symbolP);
	210	S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
	211
351aa9f6	212	/* Any symbol still undefined and is not a dbg symbol is made N_EXT. */
252b5132 RH	213	if (!S_IS_DEBUG (symbolP) && !S_IS_DEFINED (symbolP))
	214	S_SET_EXTERNAL (symbolP);
	215
	216	obj_symbol_to_chars (where, symbolP);
	217	S_SET_NAME (symbolP, temp);
	218	}
351aa9f6	219	}
252b5132 RH	220
	221	void
	222	obj_symbol_new_hook (symbolP)
	223	symbolS *symbolP;
	224	{
	225	S_SET_OTHER (symbolP, 0);
	226	S_SET_DESC (symbolP, 0);
	227	}
	228
	229	static void
	230	obj_bout_line (ignore)
	231	int ignore;
	232	{
351aa9f6 KH	233	/* Assume delimiter is part of expression. */
	234	/* BSD4.2 as fails with delightful bug, so we are not being
	235	incompatible here. */
252b5132 RH	236	new_logical_line ((char *) NULL, (int) (get_absolute_expression ()));
252b5132 RH	237	demand_empty_rest_of_line ();
351aa9f6	238	}
252b5132 RH	239
	240	void
	241	obj_read_begin_hook ()
	242	{
	243	}
	244
	245	void
	246	obj_crawl_symbol_chain (headers)
	247	object_headers *headers;
	248	{
	249	symbolS **symbolPP;
	250	symbolS *symbolP;
	251	int symbol_number = 0;
	252
	253	tc_crawl_symbol_chain (headers);
	254
351aa9f6	255	symbolPP = &symbol_rootP; /* -> last symbol chain link. */
252b5132 RH	256	while ((symbolP = *symbolPP) != NULL)
	257	{
	258	if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_DATA))
	259	{
	260	S_SET_SEGMENT (symbolP, SEG_TEXT);
351aa9f6	261	} /* if pusing data into text */
252b5132 RH	262
	263	resolve_symbol_value (symbolP, 1);
	264
	265	/* Skip symbols which were equated to undefined or common
	266	symbols. */
	267	if (symbolP->sy_value.X_op == O_symbol
	268	&& (! S_IS_DEFINED (symbolP) \|\| S_IS_COMMON (symbolP)))
	269	{
	270	*symbolPP = symbol_next (symbolP);
	271	continue;
	272	}
	273
	274	/* OK, here is how we decide which symbols go out into the
	275	brave new symtab. Symbols that do are:
351aa9f6	276
252b5132 RH	277	* symbols with no name (stabd's?)
252b5132 RH	278	* symbols with debug info in their N_TYPE
351aa9f6	279
252b5132 RH	280	Symbols that don't are:
	281	* symbols that are registers
	282	* symbols with \1 as their 3rd character (numeric labels)
	283	* "local labels" as defined by S_LOCAL_NAME(name)
	284	if the -L switch was passed to gas.
252b5132	285
351aa9f6 KH	286	All other symbols are output. We complain if a deleted
351aa9f6 KH	287	symbol was marked external. */
252b5132 RH	288
	289	if (1
	290	&& !S_IS_REGISTER (symbolP)
	291	&& (!S_GET_NAME (symbolP)
	292	\|\| S_IS_DEBUG (symbolP)
	293	#ifdef TC_I960
351aa9f6	294	/* FIXME-SOON this ifdef seems highly dubious to me. xoxorich. */
252b5132 RH	295	\|\| !S_IS_DEFINED (symbolP)
	296	\|\| S_IS_EXTERNAL (symbolP)
	297	#endif /* TC_I960 */
351aa9f6 KH	298	\|\| (S_GET_NAME (symbolP)[0] != '\001'
351aa9f6 KH	299	&& (flag_keep_locals \|\| !S_LOCAL_NAME (symbolP)))))
252b5132 RH	300	{
	301	symbolP->sy_number = symbol_number++;
	302
351aa9f6 KH	303	/* The + 1 after strlen account for the \0 at the end of
351aa9f6 KH	304	each string. */
252b5132 RH	305	if (!S_IS_STABD (symbolP))
252b5132 RH	306	{
351aa9f6	307	/* Ordinary case. */
252b5132 RH	308	symbolP->sy_name_offset = string_byte_count;
	309	string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
	310	}
351aa9f6	311	else /* .Stabd case. */
252b5132	312	symbolP->sy_name_offset = 0;
8141c27d	313	symbolPP = &(symbolP->sy_next);
252b5132 RH	314	}
	315	else
	316	{
	317	if (S_IS_EXTERNAL (symbolP) \|\| !S_IS_DEFINED (symbolP))
	318	{
351aa9f6 KH	319	as_bad (_("Local symbol %s never defined"),
	320	S_GET_NAME (symbolP));
	321	} /* Oops. */
252b5132	322
351aa9f6	323	/* Unhook it from the chain. */
252b5132	324	*symbolPP = symbol_next (symbolP);
351aa9f6 KH	325	} /* if this symbol should be in the output */
351aa9f6 KH	326	} /* for each symbol */
252b5132 RH	327
	328	H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number);
	329	}
	330
351aa9f6	331	/* Find strings by crawling along symbol table chain. */
252b5132 RH	332
	333	void
	334	obj_emit_strings (where)
	335	char **where;
	336	{
	337	symbolS *symbolP;
	338
	339	#ifdef CROSS_COMPILE
	340	/* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
	341	md_number_to_chars (*where, string_byte_count, sizeof (string_byte_count));
	342	*where += sizeof (string_byte_count);
	343	#else /* CROSS_COMPILE */
351aa9f6 KH	344	append (where, (char *) &string_byte_count,
351aa9f6 KH	345	(unsigned long) sizeof (string_byte_count));
252b5132 RH	346	#endif /* CROSS_COMPILE */
	347
	348	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
	349	{
	350	if (S_GET_NAME (symbolP))
351aa9f6 KH	351	append (where, S_GET_NAME (symbolP),
	352	(unsigned long) (strlen (S_GET_NAME (symbolP)) + 1));
	353	} /* Walk symbol chain. */
252b5132	354	}