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

/* b.out object file format
   Copyright (C) 1989, 1990, 1991, 1992 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"
const short			/* in: segT   out: N_TYPE bits */
  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 */
};				/* obj_pseudo_table */

/* Relocation. */

/*
 *		emit_relocations()
 *
 * 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 */

}				/* emit_relocations() */

/* 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];

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

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));
}				/* obj_symbol_to_chars() */

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);
    }
}				/* emit_symbols() */

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 ();
}				/* obj_bout_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);

      /* 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 = &(symbol_next (symbolP));
	}
      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 */
}

/* end of obj-bout.c */
Commit	Line	Data
fecd2382	1	/* b.out object file format
01170860	2	Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
355afbcd	3
a39116f1	4	This file is part of GAS, the GNU Assembler.
355afbcd	5
a39116f1 RP	6	GAS is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as
	8	published by the Free Software Foundation; either version 2,
	9	or (at your option) any later version.
355afbcd	10
a39116f1 RP	11	GAS is distributed in the hope that it will be useful, but
	12	WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	14	the GNU General Public License for more details.
355afbcd	15
a39116f1 RP	16	You should have received a copy of the GNU General Public
a39116f1 RP	17	License along with GAS; see the file COPYING. If not, write
a2a5a4fa	18	to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
fecd2382	19
fecd2382 RP	20	#include "as.h"
fecd2382 RP	21	#include "obstack.h"
355afbcd KR	22	const short /* in: segT out: N_TYPE bits */
	23	seg_N_TYPE[] =
	24	{
	25	N_ABS,
	26	N_TEXT,
	27	N_DATA,
	28	N_BSS,
	29	N_UNDF, /* unknown */
355afbcd	30	N_UNDF, /* error */
5ac34ac3 ILT	31	N_UNDF, /* expression */
	32	N_UNDF, /* debug */
	33	N_UNDF, /* ntv */
	34	N_UNDF, /* ptv */
355afbcd KR	35	N_REGISTER, /* register */
	36	};
	37
	38	const segT N_TYPE_seg[N_TYPE + 2] =
	39	{ /* N_TYPE == 0x1E = 32-2 */
	40	SEG_UNKNOWN, /* N_UNDF == 0 */
	41	SEG_GOOF,
	42	SEG_ABSOLUTE, /* N_ABS == 2 */
	43	SEG_GOOF,
	44	SEG_TEXT, /* N_TEXT == 4 */
	45	SEG_GOOF,
	46	SEG_DATA, /* N_DATA == 6 */
	47	SEG_GOOF,
	48	SEG_BSS, /* N_BSS == 8 */
	49	SEG_GOOF,
	50	SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
	51	SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
	52	SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
	53	SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */
	54	SEG_GOOF,
fecd2382 RP	55	};
fecd2382 RP	56
4f0bccc7	57	static void obj_bout_line PARAMS ((int));
fecd2382	58
355afbcd KR	59	const pseudo_typeS obj_pseudo_table[] =
355afbcd KR	60	{
355afbcd	61	{"line", obj_bout_line, 0}, /* source code line number */
355afbcd KR	62
	63	/* coff debugging directives. Currently ignored silently */
	64	{"def", s_ignore, 0},
	65	{"dim", s_ignore, 0},
	66	{"endef", s_ignore, 0},
	67	{"ln", s_ignore, 0},
	68	{"scl", s_ignore, 0},
	69	{"size", s_ignore, 0},
	70	{"tag", s_ignore, 0},
	71	{"type", s_ignore, 0},
	72	{"val", s_ignore, 0},
	73
	74	/* other stuff we don't handle */
	75	{"ABORT", s_ignore, 0},
	76	{"ident", s_ignore, 0},
	77
	78	{NULL} /* end sentinel */
	79	}; /* obj_pseudo_table */
fecd2382 RP	80
	81	/* Relocation. */
	82
fecd2382 RP	83	/*
	84	* emit_relocations()
	85	*
	86	* Crawl along a fixS chain. Emit the segment's relocations.
	87	*/
355afbcd KR	88	void
	89	obj_emit_relocations (where, fixP, segment_address_in_file)
	90	char **where;
	91	fixS fixP; / Fixup chain for this segment. */
	92	relax_addressT segment_address_in_file;
fecd2382	93	{
355afbcd KR	94	for (; fixP; fixP = fixP->fx_next)
355afbcd KR	95	{
98c6bbbe	96	if (fixP->fx_done == 0
355afbcd KR	97	\|\| fixP->fx_r_type != NO_RELOC)
355afbcd KR	98	{
e24cf2b5 ILT	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
355afbcd KR	107	tc_bout_fix_to_chars (*where, fixP, segment_address_in_file);
	108	*where += sizeof (struct relocation_info);
	109	} /* if there's a symbol */
	110	} /* for each fixup */
	111
	112	} /* emit_relocations() */
fecd2382 RP	113
	114	/* Aout file generation & utilities */
	115
	116	/* Convert a lvalue to machine dependent data */
355afbcd KR	117	void
	118	obj_header_append (where, headers)
	119	char **where;
	120	object_headers *headers;
fecd2382	121	{
355afbcd KR	122	/* Always leave in host byte order */
	123
	124	headers->header.a_talign = section_alignment[SEG_TEXT];
	125
	126	if (headers->header.a_talign < 2)
	127	{
	128	headers->header.a_talign = 2;
	129	} /* force to at least 2 */
	130
	131	headers->header.a_dalign = section_alignment[SEG_DATA];
	132	headers->header.a_balign = section_alignment[SEG_BSS];
	133
	134	headers->header.a_tload = 0;
	135	headers->header.a_dload = md_section_align (SEG_DATA, H_GET_TEXT_SIZE (headers));
	136
	137	headers->header.a_relaxable = linkrelax;
462088b8	138
8ae35e59	139	#ifdef CROSS_COMPILE
355afbcd KR	140	md_number_to_chars (*where, headers->header.a_magic, sizeof (headers->header.a_magic));
	141	*where += sizeof (headers->header.a_magic);
	142	md_number_to_chars (*where, headers->header.a_text, sizeof (headers->header.a_text));
	143	*where += sizeof (headers->header.a_text);
	144	md_number_to_chars (*where, headers->header.a_data, sizeof (headers->header.a_data));
	145	*where += sizeof (headers->header.a_data);
	146	md_number_to_chars (*where, headers->header.a_bss, sizeof (headers->header.a_bss));
	147	*where += sizeof (headers->header.a_bss);
	148	md_number_to_chars (*where, headers->header.a_syms, sizeof (headers->header.a_syms));
	149	*where += sizeof (headers->header.a_syms);
	150	md_number_to_chars (*where, headers->header.a_entry, sizeof (headers->header.a_entry));
	151	*where += sizeof (headers->header.a_entry);
	152	md_number_to_chars (*where, headers->header.a_trsize, sizeof (headers->header.a_trsize));
	153	*where += sizeof (headers->header.a_trsize);
	154	md_number_to_chars (*where, headers->header.a_drsize, sizeof (headers->header.a_drsize));
	155	*where += sizeof (headers->header.a_drsize);
	156	md_number_to_chars (*where, headers->header.a_tload, sizeof (headers->header.a_tload));
	157	*where += sizeof (headers->header.a_tload);
	158	md_number_to_chars (*where, headers->header.a_dload, sizeof (headers->header.a_dload));
	159	*where += sizeof (headers->header.a_dload);
	160	md_number_to_chars (*where, headers->header.a_talign, sizeof (headers->header.a_talign));
	161	*where += sizeof (headers->header.a_talign);
	162	md_number_to_chars (*where, headers->header.a_dalign, sizeof (headers->header.a_dalign));
	163	*where += sizeof (headers->header.a_dalign);
	164	md_number_to_chars (*where, headers->header.a_balign, sizeof (headers->header.a_balign));
	165	*where += sizeof (headers->header.a_balign);
	166	md_number_to_chars (*where, headers->header.a_relaxable, sizeof (headers->header.a_relaxable));
	167	*where += sizeof (headers->header.a_relaxable);
8ae35e59	168	#else /* ! CROSS_COMPILE */
355afbcd	169	append (where, (char *) &headers->header, sizeof (headers->header));
8ae35e59	170	#endif /* ! CROSS_COMPILE */
355afbcd	171	} /* a_header_append() */
fecd2382	172
355afbcd KR	173	void
	174	obj_symbol_to_chars (where, symbolP)
	175	char **where;
	176	symbolS *symbolP;
fecd2382	177	{
355afbcd KR	178	md_number_to_chars ((char *) &(S_GET_OFFSET (symbolP)), S_GET_OFFSET (symbolP), sizeof (S_GET_OFFSET (symbolP)));
355afbcd KR	179	md_number_to_chars ((char *) &(S_GET_DESC (symbolP)), S_GET_DESC (symbolP), sizeof (S_GET_DESC (symbolP)));
85051959	180	md_number_to_chars ((char *) &symbolP->sy_symbol.n_value, S_GET_VALUE (symbolP), sizeof (symbolP->sy_symbol.n_value));
8ae35e59	181
355afbcd KR	182	append (where, (char *) &symbolP->sy_symbol, sizeof (obj_symbol_type));
355afbcd KR	183	} /* obj_symbol_to_chars() */
fecd2382	184
355afbcd KR	185	void
	186	obj_emit_symbols (where, symbol_rootP)
	187	char **where;
	188	symbolS *symbol_rootP;
fecd2382	189	{
355afbcd KR	190	symbolS *symbolP;
	191
	192	/*
a39116f1 RP	193	* Emit all symbols left in the symbol chain.
a39116f1 RP	194	*/
355afbcd KR	195	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
	196	{
	197	/* Used to save the offset of the name. It is used to point
a39116f1	198	to the string in memory but must be a file offset. */
355afbcd KR	199	char *temp;
	200
	201	temp = S_GET_NAME (symbolP);
	202	S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
	203
	204	/* Any symbol still undefined and is not a dbg symbol is made N_EXT. */
	205	if (!S_IS_DEBUG (symbolP) && !S_IS_DEFINED (symbolP))
	206	S_SET_EXTERNAL (symbolP);
fecd2382	207
355afbcd KR	208	obj_symbol_to_chars (where, symbolP);
	209	S_SET_NAME (symbolP, temp);
	210	}
	211	} /* emit_symbols() */
	212
	213	void
	214	obj_symbol_new_hook (symbolP)
	215	symbolS *symbolP;
	216	{
	217	S_SET_OTHER (symbolP, 0);
	218	S_SET_DESC (symbolP, 0);
c999fd9f	219	}
355afbcd KR	220
355afbcd KR	221	static void
4f0bccc7 ILT	222	obj_bout_line (ignore)
4f0bccc7 ILT	223	int ignore;
fecd2382	224	{
355afbcd KR	225	/* Assume delimiter is part of expression. */
	226	/* BSD4.2 as fails with delightful bug, so we */
	227	/* are not being incompatible here. */
	228	new_logical_line ((char *) NULL, (int) (get_absolute_expression ()));
	229	demand_empty_rest_of_line ();
	230	} /* obj_bout_line() */
fecd2382	231
355afbcd KR	232	void
	233	obj_read_begin_hook ()
	234	{
c999fd9f	235	}
fecd2382	236
355afbcd KR	237	void
	238	obj_crawl_symbol_chain (headers)
	239	object_headers *headers;
fecd2382	240	{
355afbcd KR	241	symbolS **symbolPP;
	242	symbolS *symbolP;
	243	int symbol_number = 0;
	244
355afbcd KR	245	tc_crawl_symbol_chain (headers);
	246
	247	symbolPP = &symbol_rootP; /->last symbol chain link. /
	248	while ((symbolP = *symbolPP) != NULL)
	249	{
def66e24	250	if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_DATA))
355afbcd KR	251	{
	252	S_SET_SEGMENT (symbolP, SEG_TEXT);
	253	} /* if pusing data into text */
	254
5868b1fe	255	resolve_symbol_value (symbolP);
355afbcd	256
e24cf2b5 ILT	257	/* Skip symbols which were equated to undefined or common
	258	symbols. */
	259	if (symbolP->sy_value.X_op == O_symbol
	260	&& (! S_IS_DEFINED (symbolP) \|\| S_IS_COMMON (symbolP)))
	261	{
	262	*symbolPP = symbol_next (symbolP);
	263	continue;
	264	}
	265
355afbcd	266	/* OK, here is how we decide which symbols go out into the
4f0bccc7	267	brave new symtab. Symbols that do are:
355afbcd	268
4f0bccc7 ILT	269	* symbols with no name (stabd's?)
4f0bccc7 ILT	270	* symbols with debug info in their N_TYPE
355afbcd	271
4f0bccc7 ILT	272	Symbols that don't are:
	273	* symbols that are registers
	274	* symbols with \1 as their 3rd character (numeric labels)
	275	* "local labels" as defined by S_LOCAL_NAME(name)
	276	if the -L switch was passed to gas.
355afbcd	277
4f0bccc7 ILT	278	All other symbols are output. We complain if a deleted
4f0bccc7 ILT	279	symbol was marked external. */
355afbcd KR	280
	281
	282	if (1
	283	&& !S_IS_REGISTER (symbolP)
	284	&& (!S_GET_NAME (symbolP)
	285	\|\| S_IS_DEBUG (symbolP)
fecd2382	286	#ifdef TC_I960
355afbcd KR	287	/* FIXME-SOON this ifdef seems highly dubious to me. xoxorich. */
	288	\|\| !S_IS_DEFINED (symbolP)
	289	\|\| S_IS_EXTERNAL (symbolP)
fecd2382	290	#endif /* TC_I960 */
def66e24	291	\|\| (S_GET_NAME (symbolP)[0] != '\001' && (flag_keep_locals \|\| !S_LOCAL_NAME (symbolP)))))
355afbcd KR	292	{
	293	symbolP->sy_number = symbol_number++;
	294
	295	/* The + 1 after strlen account for the \0 at the
fecd2382	296	end of each string */
355afbcd KR	297	if (!S_IS_STABD (symbolP))
	298	{
	299	/* Ordinary case. */
	300	symbolP->sy_name_offset = string_byte_count;
	301	string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
	302	}
	303	else /* .Stabd case. */
	304	symbolP->sy_name_offset = 0;
	305	symbolPP = &(symbol_next (symbolP));
	306	}
	307	else
	308	{
	309	if (S_IS_EXTERNAL (symbolP) \|\| !S_IS_DEFINED (symbolP))
	310	{
	311	as_bad ("Local symbol %s never defined", S_GET_NAME (symbolP));
	312	} /* oops. */
	313
	314	/* Unhook it from the chain */
	315	*symbolPP = symbol_next (symbolP);
	316	} /* if this symbol should be in the output */
	317	} /* for each symbol */
	318
	319	H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number);
c999fd9f	320	}
fecd2382 RP	321
	322	/*
	323	* Find strings by crawling along symbol table chain.
	324	*/
	325
355afbcd KR	326	void
	327	obj_emit_strings (where)
	328	char **where;
fecd2382	329	{
355afbcd KR	330	symbolS *symbolP;
355afbcd KR	331
3cc6716d	332	#ifdef CROSS_COMPILE
355afbcd KR	333	/* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
	334	md_number_to_chars (*where, string_byte_count, sizeof (string_byte_count));
	335	*where += sizeof (string_byte_count);
3cc6716d	336	#else /* CROSS_COMPILE */
355afbcd	337	append (where, (char *) &string_byte_count, (unsigned long) sizeof (string_byte_count));
3cc6716d	338	#endif /* CROSS_COMPILE */
355afbcd KR	339
	340	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
	341	{
	342	if (S_GET_NAME (symbolP))
	343	append (where, S_GET_NAME (symbolP), (unsigned long) (strlen (S_GET_NAME (symbolP)) + 1));
	344	} /* walk symbol chain */
c999fd9f	345	}
fecd2382	346
fecd2382	347	/* end of obj-bout.c */