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

/* a.out object file format
   Copyright (C) 1989, 1990, 1991 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, 675 Mass Ave, Cambridge, MA 02139, USA. */

#include "as.h"
#ifdef BFD_ASSEMBLER
#undef NO_RELOC
#include "aout/aout64.h"
#endif
#include "obstack.h"

#ifndef BFD_ASSEMBLER
/* 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,
};
#endif

static void obj_aout_line PARAMS ((int));

const pseudo_typeS obj_pseudo_table[] =
{
  {"line", obj_aout_line, 0},	/* source code line number */
  {"ln", obj_aout_line, 0},	/* coff line number that we use anyway */

  /* coff debug pseudos (ignored) */
  {"def", s_ignore, 0},
  {"dim", s_ignore, 0},
  {"endef", s_ignore, 0},
  {"ident", s_ignore, 0},
  {"line", 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},
  {"version", s_ignore, 0},

  {"optim", s_ignore, 0},	/* For sun386i cc (?) */

  /* other stuff */
  {"ABORT", s_abort, 0},

  {NULL}			/* end sentinel */
};				/* obj_pseudo_table */


#ifdef BFD_ASSEMBLER

void
obj_aout_frob_symbol (sym, punt)
     symbolS *sym;
     int *punt;
{
  flagword flags;
  asection *sec;
  int desc, type, other;

  flags = sym->bsym->flags;
  desc = S_GET_DESC (sym);
  type = S_GET_TYPE (sym);
  other = S_GET_OTHER (sym);
  sec = sym->bsym->section;

  /* Only frob simple symbols this way right now.  */
  if (! (type & ~ (N_TYPE | N_EXT)))
    {
      if (type == (N_UNDF | N_EXT)
	  && sec == &bfd_abs_section)
	sym->bsym->section = sec = &bfd_und_section;

      if ((type & N_TYPE) != N_INDR
	  && type != N_WARNING
	  && (sec == &bfd_abs_section
	      || sec == &bfd_und_section))
	return;
      if (flags & BSF_EXPORT)
	type |= N_EXT;

      switch (type & N_TYPE)
	{
	case N_SETA:
	case N_SETT:
	case N_SETD:
	case N_SETB:
	  /* Set the debugging flag for constructor symbols so that
	     BFD leaves them alone.  */
	  sym->bsym->flags |= BSF_DEBUGGING;
	  break;
	case N_INDR:
	  /* Put indirect symbols in the indirect section.  */
	  sym->bsym->section = &bfd_ind_section;
	  sym->bsym->flags |= BSF_INDIRECT;
	  if (type & N_EXT)
	    {
	      sym->bsym->flags |= BSF_EXPORT;
	      sym->bsym->flags &=~ BSF_LOCAL;
	    }
	  break;
	case N_WARNING:
	  /* Mark warning symbols.  */
	  sym->bsym->flags |= BSF_WARNING;
	  break;
	}
    }
  else
    {
      sym->bsym->flags |= BSF_DEBUGGING;
    }

  S_SET_TYPE (sym, type);
}

void
obj_aout_frob_file ()
{
  /* Relocation processing may require knowing the VMAs of the sections.
     Since writing to a section will cause the BFD back end to compute the
     VMAs, fake it out here....  */
  bfd_byte b = 0;
  boolean x = true;
  if (bfd_section_size (stdoutput, text_section) != 0)
    {
      x = bfd_set_section_contents (stdoutput, text_section, &b, (file_ptr) 0,
				    (bfd_size_type) 1);
    }
  else if (bfd_section_size (stdoutput, data_section) != 0)
    {
      x = bfd_set_section_contents (stdoutput, data_section, &b, (file_ptr) 0,
				    (bfd_size_type) 1);
    }
  assert (x == true);
}

#else

/* 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)
      {
	tc_aout_fix_to_chars (*where, fixP, segment_address_in_file);
	*where += md_reloc_size;
      }
}

#ifndef obj_header_append
/* Aout file generation & utilities */
void
obj_header_append (where, headers)
     char **where;
     object_headers *headers;
{
  tc_headers_hook (headers);

#ifdef CROSS_COMPILE
  md_number_to_chars (*where, headers->header.a_info, sizeof (headers->header.a_info));
  *where += sizeof (headers->header.a_info);
  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);

#else /* CROSS_COMPILE */

  append (where, (char *) &headers->header, sizeof (headers->header));
#endif /* CROSS_COMPILE */

}
#endif

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. */
      register 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);
    }
}

#endif /* ! BFD_ASSEMBLER */

static void
obj_aout_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_aout_line() */

void
obj_read_begin_hook ()
{
}

#ifndef BFD_ASSEMBLER

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

  tc_crawl_symbol_chain (headers);

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

      resolve_symbol_value (symbolP);

      /* 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 (!S_IS_REGISTER (symbolP)
	  && (!S_GET_NAME (symbolP)
	      || S_IS_DEBUG (symbolP)
	      || !S_IS_DEFINED (symbolP)
	      || S_IS_EXTERNAL (symbolP)
	      || (S_GET_NAME (symbolP)[0] != '\001'
		  && (flagseen['L'] || !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))
	    /* This warning should never get triggered any more.
	       Well, maybe if you're doing twisted things with
	       register names...  */
	    {
	      as_bad ("Local symbol %s never defined.", decode_local_label_name (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 (&next_object_file_charP, S_GET_NAME (symbolP),
		(unsigned long) (strlen (S_GET_NAME (symbolP)) + 1));
    }				/* walk symbol chain */
}

#ifndef AOUT_VERSION
#define AOUT_VERSION 0
#endif

void
obj_pre_write_hook (headers)
     object_headers *headers;
{
  H_SET_DYNAMIC (headers, 0);
  H_SET_VERSION (headers, AOUT_VERSION);
  H_SET_MACHTYPE (headers, AOUT_MACHTYPE);
  tc_aout_pre_write_hook (headers);
}

void
DEFUN_VOID (s_sect)
{
  /* Strip out the section name */
  char *section_name;
  char *section_name_end;
  char c;

  unsigned int len;
  unsigned int exp;
  char *save;

  section_name = input_line_pointer;
  c = get_symbol_end ();
  section_name_end = input_line_pointer;

  len = section_name_end - section_name;
  input_line_pointer++;
  save = input_line_pointer;

  SKIP_WHITESPACE ();
  if (c == ',')
    {
      exp = get_absolute_expression ();
    }
  else if (*input_line_pointer == ',')
    {
      input_line_pointer++;
      exp = get_absolute_expression ();
    }
  else
    {
      input_line_pointer = save;
      exp = 0;
    }
  if (exp >= 1000)
    {
      as_bad ("subsegment index too high");
    }

  if (strcmp (section_name, ".text") == 0)
    {
      subseg_set (SEG_TEXT, (subsegT) exp);
    }

  if (strcmp (section_name, ".data") == 0)
    {
      if (flagseen['R'])
	subseg_set (SEG_TEXT, (subsegT) exp + 1000);
      else
	subseg_set (SEG_DATA, (subsegT) exp);
    }

  *section_name_end = c;
}

#endif /* ! BFD_ASSEMBLER */

/* end of obj-aout.c */
Commit	Line	Data
fecd2382	1	/* a.out object file format
85051959 ILT	2	Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc.
	3
	4	This file is part of GAS, the GNU Assembler.
	5
	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.
	10
	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.
	15
	16	You should have received a copy of the GNU General Public
	17	License along with GAS; see the file COPYING. If not, write
	18	to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
fecd2382 RP	19
fecd2382 RP	20	#include "as.h"
604633ae	21	#ifdef BFD_ASSEMBLER
645f842c	22	#undef NO_RELOC
2c5c299f	23	#include "aout/aout64.h"
604633ae	24	#endif
fecd2382 RP	25	#include "obstack.h"
fecd2382 RP	26
85051959	27	#ifndef BFD_ASSEMBLER
a39116f1	28	/* in: segT out: N_TYPE bits */
85051959 ILT	29	const short seg_N_TYPE[] =
	30	{
	31	N_ABS,
	32	N_TEXT,
	33	N_DATA,
	34	N_BSS,
	35	N_UNDF, /* unknown */
85051959	36	N_UNDF, /* error */
5ac34ac3	37	N_UNDF, /* expression */
85051959 ILT	38	N_UNDF, /* debug */
	39	N_UNDF, /* ntv */
	40	N_UNDF, /* ptv */
	41	N_REGISTER, /* register */
fecd2382 RP	42	};
fecd2382 RP	43
85051959 ILT	44	const segT N_TYPE_seg[N_TYPE + 2] =
	45	{ /* N_TYPE == 0x1E = 32-2 */
	46	SEG_UNKNOWN, /* N_UNDF == 0 */
	47	SEG_GOOF,
	48	SEG_ABSOLUTE, /* N_ABS == 2 */
	49	SEG_GOOF,
	50	SEG_TEXT, /* N_TEXT == 4 */
	51	SEG_GOOF,
	52	SEG_DATA, /* N_DATA == 6 */
	53	SEG_GOOF,
	54	SEG_BSS, /* N_BSS == 8 */
	55	SEG_GOOF,
	56	SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
	57	SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
	58	SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF,
	59	SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */
	60	SEG_GOOF,
fecd2382	61	};
85051959 ILT	62	#endif
85051959 ILT	63
604633ae	64	static void obj_aout_line PARAMS ((int));
fecd2382	65
85051959 ILT	66	const pseudo_typeS obj_pseudo_table[] =
85051959 ILT	67	{
85051959 ILT	68	{"line", obj_aout_line, 0}, /* source code line number */
85051959 ILT	69	{"ln", obj_aout_line, 0}, /* coff line number that we use anyway */
fecd2382	70
85051959 ILT	71	/* coff debug pseudos (ignored) */
	72	{"def", s_ignore, 0},
	73	{"dim", s_ignore, 0},
	74	{"endef", s_ignore, 0},
	75	{"ident", s_ignore, 0},
	76	{"line", s_ignore, 0},
	77	{"ln", s_ignore, 0},
	78	{"scl", s_ignore, 0},
	79	{"size", s_ignore, 0},
	80	{"tag", s_ignore, 0},
	81	{"type", s_ignore, 0},
	82	{"val", s_ignore, 0},
	83	{"version", s_ignore, 0},
	84
85051959 ILT	85	{"optim", s_ignore, 0}, /* For sun386i cc (?) */
	86
	87	/* other stuff */
	88	{"ABORT", s_abort, 0},
	89
	90	{NULL} /* end sentinel */
	91	}; /* obj_pseudo_table */
	92
	93
	94	#ifdef BFD_ASSEMBLER
	95
	96	void
	97	obj_aout_frob_symbol (sym, punt)
	98	symbolS *sym;
	99	int *punt;
	100	{
	101	flagword flags;
	102	asection *sec;
	103	int desc, type, other;
	104
85051959 ILT	105	flags = sym->bsym->flags;
	106	desc = S_GET_DESC (sym);
	107	type = S_GET_TYPE (sym);
	108	other = S_GET_OTHER (sym);
	109	sec = sym->bsym->section;
	110
	111	/* Only frob simple symbols this way right now. */
2c5c299f	112	if (! (type & ~ (N_TYPE \| N_EXT)))
85051959	113	{
4bda835f ILT	114	if (type == (N_UNDF \| N_EXT)
	115	&& sec == &bfd_abs_section)
	116	sym->bsym->section = sec = &bfd_und_section;
	117
	118	if ((type & N_TYPE) != N_INDR
13655af6	119	&& type != N_WARNING
4bda835f ILT	120	&& (sec == &bfd_abs_section
4bda835f ILT	121	\|\| sec == &bfd_und_section))
85051959 ILT	122	return;
85051959 ILT	123	if (flags & BSF_EXPORT)
2c5c299f ILT	124	type \|= N_EXT;
2c5c299f ILT	125
2c5c299f ILT	126	switch (type & N_TYPE)
	127	{
	128	case N_SETA:
	129	case N_SETT:
	130	case N_SETD:
	131	case N_SETB:
4bda835f ILT	132	/* Set the debugging flag for constructor symbols so that
4bda835f ILT	133	BFD leaves them alone. */
2c5c299f ILT	134	sym->bsym->flags \|= BSF_DEBUGGING;
2c5c299f ILT	135	break;
4bda835f ILT	136	case N_INDR:
	137	/* Put indirect symbols in the indirect section. */
	138	sym->bsym->section = &bfd_ind_section;
	139	sym->bsym->flags \|= BSF_INDIRECT;
645f842c ILT	140	if (type & N_EXT)
	141	{
	142	sym->bsym->flags \|= BSF_EXPORT;
	143	sym->bsym->flags &=~ BSF_LOCAL;
	144	}
4bda835f	145	break;
13655af6 ILT	146	case N_WARNING:
	147	/* Mark warning symbols. */
	148	sym->bsym->flags \|= BSF_WARNING;
	149	break;
2c5c299f	150	}
85051959 ILT	151	}
	152	else
	153	{
	154	sym->bsym->flags \|= BSF_DEBUGGING;
	155	}
	156
	157	S_SET_TYPE (sym, type);
	158	}
	159
645f842c ILT	160	void
	161	obj_aout_frob_file ()
	162	{
	163	/* Relocation processing may require knowing the VMAs of the sections.
	164	Since writing to a section will cause the BFD back end to compute the
	165	VMAs, fake it out here.... */
	166	bfd_byte b = 0;
	167	boolean x = true;
	168	if (bfd_section_size (stdoutput, text_section) != 0)
	169	{
	170	x = bfd_set_section_contents (stdoutput, text_section, &b, (file_ptr) 0,
	171	(bfd_size_type) 1);
	172	}
	173	else if (bfd_section_size (stdoutput, data_section) != 0)
	174	{
	175	x = bfd_set_section_contents (stdoutput, data_section, &b, (file_ptr) 0,
	176	(bfd_size_type) 1);
	177	}
	178	assert (x == true);
	179	}
	180
85051959	181	#else
fecd2382 RP	182
	183	/* Relocation. */
	184
fecd2382 RP	185	/*
	186	* emit_relocations()
	187	*
	188	* Crawl along a fixS chain. Emit the segment's relocations.
	189	*/
85051959 ILT	190	void
	191	obj_emit_relocations (where, fixP, segment_address_in_file)
	192	char **where;
	193	fixS fixP; / Fixup chain for this segment. */
	194	relax_addressT segment_address_in_file;
fecd2382	195	{
85051959	196	for (; fixP; fixP = fixP->fx_next)
645f842c	197	if (fixP->fx_done == 0)
85051959 ILT	198	{
	199	tc_aout_fix_to_chars (*where, fixP, segment_address_in_file);
	200	*where += md_reloc_size;
	201	}
	202	}
fecd2382	203
85051959	204	#ifndef obj_header_append
fecd2382	205	/* Aout file generation & utilities */
85051959 ILT	206	void
	207	obj_header_append (where, headers)
	208	char **where;
	209	object_headers *headers;
fecd2382	210	{
85051959 ILT	211	tc_headers_hook (headers);
85051959 ILT	212
a39116f1	213	#ifdef CROSS_COMPILE
85051959 ILT	214	md_number_to_chars (*where, headers->header.a_info, sizeof (headers->header.a_info));
	215	*where += sizeof (headers->header.a_info);
	216	md_number_to_chars (*where, headers->header.a_text, sizeof (headers->header.a_text));
	217	*where += sizeof (headers->header.a_text);
	218	md_number_to_chars (*where, headers->header.a_data, sizeof (headers->header.a_data));
	219	*where += sizeof (headers->header.a_data);
	220	md_number_to_chars (*where, headers->header.a_bss, sizeof (headers->header.a_bss));
	221	*where += sizeof (headers->header.a_bss);
	222	md_number_to_chars (*where, headers->header.a_syms, sizeof (headers->header.a_syms));
	223	*where += sizeof (headers->header.a_syms);
	224	md_number_to_chars (*where, headers->header.a_entry, sizeof (headers->header.a_entry));
	225	*where += sizeof (headers->header.a_entry);
	226	md_number_to_chars (*where, headers->header.a_trsize, sizeof (headers->header.a_trsize));
	227	*where += sizeof (headers->header.a_trsize);
	228	md_number_to_chars (*where, headers->header.a_drsize, sizeof (headers->header.a_drsize));
	229	*where += sizeof (headers->header.a_drsize);
	230
a39116f1	231	#else /* CROSS_COMPILE */
85051959 ILT	232
85051959 ILT	233	append (where, (char *) &headers->header, sizeof (headers->header));
a39116f1	234	#endif /* CROSS_COMPILE */
fecd2382	235
85051959 ILT	236	}
	237	#endif
	238
	239	void
	240	obj_symbol_to_chars (where, symbolP)
	241	char **where;
	242	symbolS *symbolP;
fecd2382	243	{
85051959 ILT	244	md_number_to_chars ((char *) &(S_GET_OFFSET (symbolP)), S_GET_OFFSET (symbolP), sizeof (S_GET_OFFSET (symbolP)));
	245	md_number_to_chars ((char *) &(S_GET_DESC (symbolP)), S_GET_DESC (symbolP), sizeof (S_GET_DESC (symbolP)));
	246	md_number_to_chars ((char *) &(symbolP->sy_symbol.n_value), S_GET_VALUE (symbolP), sizeof (symbolP->sy_symbol.n_value));
	247
	248	append (where, (char *) &symbolP->sy_symbol, sizeof (obj_symbol_type));
	249	}
fecd2382	250
85051959 ILT	251	void
	252	obj_emit_symbols (where, symbol_rootP)
	253	char **where;
	254	symbolS *symbol_rootP;
fecd2382	255	{
85051959 ILT	256	symbolS *symbolP;
	257
	258	/* Emit all symbols left in the symbol chain. */
	259	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
	260	{
	261	/* Used to save the offset of the name. It is used to point
	262	to the string in memory but must be a file offset. */
	263	register char *temp;
	264
	265	temp = S_GET_NAME (symbolP);
	266	S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
fecd2382	267
85051959 ILT	268	/* Any symbol still undefined and is not a dbg symbol is made N_EXT. */
	269	if (!S_IS_DEBUG (symbolP) && !S_IS_DEFINED (symbolP))
	270	S_SET_EXTERNAL (symbolP);
	271
	272	obj_symbol_to_chars (where, symbolP);
	273	S_SET_NAME (symbolP, temp);
	274	}
	275	}
	276
	277	#endif /* ! BFD_ASSEMBLER */
	278
	279	static void
604633ae ILT	280	obj_aout_line (ignore)
604633ae ILT	281	int ignore;
85051959 ILT	282	{
	283	/* Assume delimiter is part of expression.
	284	BSD4.2 as fails with delightful bug, so we
	285	are not being incompatible here. */
	286	new_logical_line ((char *) NULL, (int) (get_absolute_expression ()));
	287	demand_empty_rest_of_line ();
	288	} /* obj_aout_line() */
fecd2382	289
85051959 ILT	290	void
	291	obj_read_begin_hook ()
	292	{
4bda835f	293	}
85051959 ILT	294
85051959 ILT	295	#ifndef BFD_ASSEMBLER
fecd2382	296
85051959 ILT	297	void
	298	obj_crawl_symbol_chain (headers)
	299	object_headers *headers;
fecd2382	300	{
85051959 ILT	301	symbolS *symbolP;
	302	symbolS **symbolPP;
	303	int symbol_number = 0;
	304
85051959 ILT	305	tc_crawl_symbol_chain (headers);
	306
	307	symbolPP = &symbol_rootP; /->last symbol chain link. /
	308	while ((symbolP = *symbolPP) != NULL)
	309	{
	310	if (flagseen['R'] && (S_GET_SEGMENT (symbolP) == SEG_DATA))
	311	{
	312	S_SET_SEGMENT (symbolP, SEG_TEXT);
	313	} /* if pusing data into text */
	314
5868b1fe	315	resolve_symbol_value (symbolP);
85051959 ILT	316
	317	/* OK, here is how we decide which symbols go out into the brave
	318	new symtab. Symbols that do are:
	319
	320	* symbols with no name (stabd's?)
	321	* symbols with debug info in their N_TYPE
	322
	323	Symbols that don't are:
	324	* symbols that are registers
	325	* symbols with \1 as their 3rd character (numeric labels)
	326	* "local labels" as defined by S_LOCAL_NAME(name) if the -L
	327	switch was passed to gas.
	328
	329	All other symbols are output. We complain if a deleted
	330	symbol was marked external. */
	331
	332
	333	if (!S_IS_REGISTER (symbolP)
	334	&& (!S_GET_NAME (symbolP)
	335	\|\| S_IS_DEBUG (symbolP)
85051959 ILT	336	\|\| !S_IS_DEFINED (symbolP)
85051959 ILT	337	\|\| S_IS_EXTERNAL (symbolP)
645f842c ILT	338	\|\| (S_GET_NAME (symbolP)[0] != '\001'
645f842c ILT	339	&& (flagseen['L'] \|\| !S_LOCAL_NAME (symbolP)))))
85051959 ILT	340	{
	341	symbolP->sy_number = symbol_number++;
	342
	343	/* The + 1 after strlen account for the \0 at the
fecd2382	344	end of each string */
85051959 ILT	345	if (!S_IS_STABD (symbolP))
	346	{
	347	/* Ordinary case. */
	348	symbolP->sy_name_offset = string_byte_count;
	349	string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
	350	}
	351	else /* .Stabd case. */
	352	symbolP->sy_name_offset = 0;
	353	symbolPP = &(symbol_next (symbolP));
	354	}
	355	else
	356	{
	357	if (S_IS_EXTERNAL (symbolP) \|\| !S_IS_DEFINED (symbolP))
645f842c ILT	358	/* This warning should never get triggered any more.
	359	Well, maybe if you're doing twisted things with
	360	register names... */
85051959 ILT	361	{
	362	as_bad ("Local symbol %s never defined.", decode_local_label_name (S_GET_NAME (symbolP)));
	363	} /* oops. */
	364
	365	/* Unhook it from the chain */
	366	*symbolPP = symbol_next (symbolP);
	367	} /* if this symbol should be in the output */
	368	} /* for each symbol */
	369
	370	H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number);
4bda835f	371	}
fecd2382 RP	372
	373	/*
	374	* Find strings by crawling along symbol table chain.
	375	*/
	376
85051959 ILT	377	void
	378	obj_emit_strings (where)
	379	char **where;
fecd2382	380	{
85051959 ILT	381	symbolS *symbolP;
85051959 ILT	382
a39116f1	383	#ifdef CROSS_COMPILE
85051959 ILT	384	/* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
	385	md_number_to_chars (*where, string_byte_count, sizeof (string_byte_count));
	386	*where += sizeof (string_byte_count);
a39116f1	387	#else /* CROSS_COMPILE */
85051959	388	append (where, (char *) &string_byte_count, (unsigned long) sizeof (string_byte_count));
a39116f1	389	#endif /* CROSS_COMPILE */
fecd2382	390
85051959 ILT	391	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
	392	{
	393	if (S_GET_NAME (symbolP))
	394	append (&next_object_file_charP, S_GET_NAME (symbolP),
	395	(unsigned long) (strlen (S_GET_NAME (symbolP)) + 1));
	396	} /* walk symbol chain */
4bda835f	397	}
85051959 ILT	398
	399	#ifndef AOUT_VERSION
	400	#define AOUT_VERSION 0
	401	#endif
	402
	403	void
	404	obj_pre_write_hook (headers)
	405	object_headers *headers;
a39116f1	406	{
85051959 ILT	407	H_SET_DYNAMIC (headers, 0);
	408	H_SET_VERSION (headers, AOUT_VERSION);
	409	H_SET_MACHTYPE (headers, AOUT_MACHTYPE);
	410	tc_aout_pre_write_hook (headers);
4bda835f	411	}
a39116f1	412
85051959 ILT	413	void
	414	DEFUN_VOID (s_sect)
	415	{
	416	/* Strip out the section name */
	417	char *section_name;
	418	char *section_name_end;
	419	char c;
	420
	421	unsigned int len;
	422	unsigned int exp;
	423	char *save;
	424
	425	section_name = input_line_pointer;
	426	c = get_symbol_end ();
	427	section_name_end = input_line_pointer;
	428
	429	len = section_name_end - section_name;
	430	input_line_pointer++;
	431	save = input_line_pointer;
	432
	433	SKIP_WHITESPACE ();
	434	if (c == ',')
	435	{
	436	exp = get_absolute_expression ();
	437	}
	438	else if (*input_line_pointer == ',')
	439	{
	440	input_line_pointer++;
	441	exp = get_absolute_expression ();
	442	}
	443	else
	444	{
	445	input_line_pointer = save;
	446	exp = 0;
	447	}
	448	if (exp >= 1000)
	449	{
	450	as_bad ("subsegment index too high");
	451	}
	452
	453	if (strcmp (section_name, ".text") == 0)
	454	{
604633ae	455	subseg_set (SEG_TEXT, (subsegT) exp);
85051959 ILT	456	}
	457
	458	if (strcmp (section_name, ".data") == 0)
	459	{
	460	if (flagseen['R'])
604633ae	461	subseg_set (SEG_TEXT, (subsegT) exp + 1000);
85051959	462	else
604633ae	463	subseg_set (SEG_DATA, (subsegT) exp);
85051959 ILT	464	}
	465
	466	*section_name_end = c;
	467	}
	468
	469	#endif /* ! BFD_ASSEMBLER */
fecd2382 RP	470
fecd2382 RP	471	/* end of obj-aout.c */