[binutils.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));
static void obj_aout_weak 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 */

  {"weak", obj_aout_weak, 0},	/* mark symbol as weak.  */

  /* 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_TYPE) != N_SETA
	  && (type & N_TYPE) != N_SETT
	  && (type & N_TYPE) != N_SETD
	  && (type & N_TYPE) != N_SETB
	  && 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);

      /* Adjust the type of a weak symbol.  */
      if (S_GET_WEAK (symbolP))
	{
	  switch (S_GET_TYPE (symbolP))
	    {
	    case N_UNDF: S_SET_TYPE (symbolP, N_WEAKU); break;
	    case N_ABS:	 S_SET_TYPE (symbolP, N_WEAKA); break;
	    case N_TEXT: S_SET_TYPE (symbolP, N_WEAKT); break;
	    case N_DATA: S_SET_TYPE (symbolP, N_WEAKD); break;
	    case N_BSS:  S_SET_TYPE (symbolP, N_WEAKB); break;
	    default: as_bad ("%s: bad type for weak symbol", temp); break;
	    }
	}

      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() */

/* Handle .weak.  This is a GNU extension.  */

static void
obj_aout_weak (ignore)
     int ignore;
{
  char *name;
  int c;
  symbolS *symbolP;

  do
    {
      name = input_line_pointer;
      c = get_symbol_end ();
      symbolP = symbol_find_or_make (name);
      *input_line_pointer = c;
      SKIP_WHITESPACE ();
      S_SET_WEAK (symbolP);
      if (c == ',')
	{
	  input_line_pointer++;
	  SKIP_WHITESPACE ();
	  if (*input_line_pointer == '\n')
	    c = '\n';
	}
    }
  while (c == ',');
  demand_empty_rest_of_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 (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);

      /* 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'
		  && (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))
	    /* 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 (flag_readonly_data_in_text)
	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));
02d4e923	65	static void obj_aout_weak PARAMS ((int));
fecd2382	66
85051959 ILT	67	const pseudo_typeS obj_pseudo_table[] =
85051959 ILT	68	{
85051959 ILT	69	{"line", obj_aout_line, 0}, /* source code line number */
85051959 ILT	70	{"ln", obj_aout_line, 0}, /* coff line number that we use anyway */
fecd2382	71
02d4e923 ILT	72	{"weak", obj_aout_weak, 0}, /* mark symbol as weak. */
02d4e923 ILT	73
85051959 ILT	74	/* coff debug pseudos (ignored) */
	75	{"def", s_ignore, 0},
	76	{"dim", s_ignore, 0},
	77	{"endef", s_ignore, 0},
	78	{"ident", s_ignore, 0},
	79	{"line", s_ignore, 0},
	80	{"ln", s_ignore, 0},
	81	{"scl", s_ignore, 0},
	82	{"size", s_ignore, 0},
	83	{"tag", s_ignore, 0},
	84	{"type", s_ignore, 0},
	85	{"val", s_ignore, 0},
	86	{"version", s_ignore, 0},
	87
85051959 ILT	88	{"optim", s_ignore, 0}, /* For sun386i cc (?) */
	89
	90	/* other stuff */
	91	{"ABORT", s_abort, 0},
	92
	93	{NULL} /* end sentinel */
	94	}; /* obj_pseudo_table */
	95
	96
	97	#ifdef BFD_ASSEMBLER
	98
	99	void
	100	obj_aout_frob_symbol (sym, punt)
	101	symbolS *sym;
	102	int *punt;
	103	{
	104	flagword flags;
	105	asection *sec;
	106	int desc, type, other;
	107
85051959 ILT	108	flags = sym->bsym->flags;
	109	desc = S_GET_DESC (sym);
	110	type = S_GET_TYPE (sym);
	111	other = S_GET_OTHER (sym);
	112	sec = sym->bsym->section;
	113
	114	/* Only frob simple symbols this way right now. */
2c5c299f	115	if (! (type & ~ (N_TYPE \| N_EXT)))
85051959	116	{
4bda835f ILT	117	if (type == (N_UNDF \| N_EXT)
	118	&& sec == &bfd_abs_section)
	119	sym->bsym->section = sec = &bfd_und_section;
	120
	121	if ((type & N_TYPE) != N_INDR
def66e24 DM	122	&& (type & N_TYPE) != N_SETA
	123	&& (type & N_TYPE) != N_SETT
	124	&& (type & N_TYPE) != N_SETD
	125	&& (type & N_TYPE) != N_SETB
13655af6	126	&& type != N_WARNING
4bda835f ILT	127	&& (sec == &bfd_abs_section
4bda835f ILT	128	\|\| sec == &bfd_und_section))
85051959 ILT	129	return;
85051959 ILT	130	if (flags & BSF_EXPORT)
2c5c299f ILT	131	type \|= N_EXT;
2c5c299f ILT	132
2c5c299f ILT	133	switch (type & N_TYPE)
	134	{
	135	case N_SETA:
	136	case N_SETT:
	137	case N_SETD:
	138	case N_SETB:
4bda835f ILT	139	/* Set the debugging flag for constructor symbols so that
4bda835f ILT	140	BFD leaves them alone. */
2c5c299f ILT	141	sym->bsym->flags \|= BSF_DEBUGGING;
2c5c299f ILT	142	break;
4bda835f ILT	143	case N_INDR:
	144	/* Put indirect symbols in the indirect section. */
	145	sym->bsym->section = &bfd_ind_section;
	146	sym->bsym->flags \|= BSF_INDIRECT;
645f842c ILT	147	if (type & N_EXT)
	148	{
	149	sym->bsym->flags \|= BSF_EXPORT;
	150	sym->bsym->flags &=~ BSF_LOCAL;
	151	}
4bda835f	152	break;
13655af6 ILT	153	case N_WARNING:
	154	/* Mark warning symbols. */
	155	sym->bsym->flags \|= BSF_WARNING;
	156	break;
2c5c299f	157	}
85051959 ILT	158	}
	159	else
	160	{
	161	sym->bsym->flags \|= BSF_DEBUGGING;
	162	}
	163
	164	S_SET_TYPE (sym, type);
	165	}
	166
645f842c ILT	167	void
	168	obj_aout_frob_file ()
	169	{
	170	/* Relocation processing may require knowing the VMAs of the sections.
	171	Since writing to a section will cause the BFD back end to compute the
	172	VMAs, fake it out here.... */
	173	bfd_byte b = 0;
	174	boolean x = true;
	175	if (bfd_section_size (stdoutput, text_section) != 0)
	176	{
	177	x = bfd_set_section_contents (stdoutput, text_section, &b, (file_ptr) 0,
	178	(bfd_size_type) 1);
	179	}
	180	else if (bfd_section_size (stdoutput, data_section) != 0)
	181	{
	182	x = bfd_set_section_contents (stdoutput, data_section, &b, (file_ptr) 0,
	183	(bfd_size_type) 1);
	184	}
	185	assert (x == true);
	186	}
	187
85051959	188	#else
fecd2382 RP	189
	190	/* Relocation. */
	191
fecd2382 RP	192	/*
	193	* emit_relocations()
	194	*
	195	* Crawl along a fixS chain. Emit the segment's relocations.
	196	*/
85051959 ILT	197	void
	198	obj_emit_relocations (where, fixP, segment_address_in_file)
	199	char **where;
	200	fixS fixP; / Fixup chain for this segment. */
	201	relax_addressT segment_address_in_file;
fecd2382	202	{
85051959	203	for (; fixP; fixP = fixP->fx_next)
645f842c	204	if (fixP->fx_done == 0)
85051959 ILT	205	{
	206	tc_aout_fix_to_chars (*where, fixP, segment_address_in_file);
	207	*where += md_reloc_size;
	208	}
	209	}
fecd2382	210
85051959	211	#ifndef obj_header_append
fecd2382	212	/* Aout file generation & utilities */
85051959 ILT	213	void
	214	obj_header_append (where, headers)
	215	char **where;
	216	object_headers *headers;
fecd2382	217	{
85051959 ILT	218	tc_headers_hook (headers);
85051959 ILT	219
a39116f1	220	#ifdef CROSS_COMPILE
85051959 ILT	221	md_number_to_chars (*where, headers->header.a_info, sizeof (headers->header.a_info));
	222	*where += sizeof (headers->header.a_info);
	223	md_number_to_chars (*where, headers->header.a_text, sizeof (headers->header.a_text));
	224	*where += sizeof (headers->header.a_text);
	225	md_number_to_chars (*where, headers->header.a_data, sizeof (headers->header.a_data));
	226	*where += sizeof (headers->header.a_data);
	227	md_number_to_chars (*where, headers->header.a_bss, sizeof (headers->header.a_bss));
	228	*where += sizeof (headers->header.a_bss);
	229	md_number_to_chars (*where, headers->header.a_syms, sizeof (headers->header.a_syms));
	230	*where += sizeof (headers->header.a_syms);
	231	md_number_to_chars (*where, headers->header.a_entry, sizeof (headers->header.a_entry));
	232	*where += sizeof (headers->header.a_entry);
	233	md_number_to_chars (*where, headers->header.a_trsize, sizeof (headers->header.a_trsize));
	234	*where += sizeof (headers->header.a_trsize);
	235	md_number_to_chars (*where, headers->header.a_drsize, sizeof (headers->header.a_drsize));
	236	*where += sizeof (headers->header.a_drsize);
	237
a39116f1	238	#else /* CROSS_COMPILE */
85051959 ILT	239
85051959 ILT	240	append (where, (char *) &headers->header, sizeof (headers->header));
a39116f1	241	#endif /* CROSS_COMPILE */
fecd2382	242
85051959 ILT	243	}
	244	#endif
	245
	246	void
	247	obj_symbol_to_chars (where, symbolP)
	248	char **where;
	249	symbolS *symbolP;
fecd2382	250	{
85051959 ILT	251	md_number_to_chars ((char *) &(S_GET_OFFSET (symbolP)), S_GET_OFFSET (symbolP), sizeof (S_GET_OFFSET (symbolP)));
	252	md_number_to_chars ((char *) &(S_GET_DESC (symbolP)), S_GET_DESC (symbolP), sizeof (S_GET_DESC (symbolP)));
	253	md_number_to_chars ((char *) &(symbolP->sy_symbol.n_value), S_GET_VALUE (symbolP), sizeof (symbolP->sy_symbol.n_value));
	254
	255	append (where, (char *) &symbolP->sy_symbol, sizeof (obj_symbol_type));
	256	}
fecd2382	257
85051959 ILT	258	void
	259	obj_emit_symbols (where, symbol_rootP)
	260	char **where;
	261	symbolS *symbol_rootP;
fecd2382	262	{
85051959 ILT	263	symbolS *symbolP;
	264
	265	/* Emit all symbols left in the symbol chain. */
	266	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
	267	{
	268	/* Used to save the offset of the name. It is used to point
	269	to the string in memory but must be a file offset. */
	270	register char *temp;
	271
	272	temp = S_GET_NAME (symbolP);
	273	S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
fecd2382	274
85051959 ILT	275	/* Any symbol still undefined and is not a dbg symbol is made N_EXT. */
	276	if (!S_IS_DEBUG (symbolP) && !S_IS_DEFINED (symbolP))
	277	S_SET_EXTERNAL (symbolP);
	278
02d4e923 ILT	279	/* Adjust the type of a weak symbol. */
	280	if (S_GET_WEAK (symbolP))
	281	{
	282	switch (S_GET_TYPE (symbolP))
	283	{
	284	case N_UNDF: S_SET_TYPE (symbolP, N_WEAKU); break;
	285	case N_ABS: S_SET_TYPE (symbolP, N_WEAKA); break;
	286	case N_TEXT: S_SET_TYPE (symbolP, N_WEAKT); break;
	287	case N_DATA: S_SET_TYPE (symbolP, N_WEAKD); break;
	288	case N_BSS: S_SET_TYPE (symbolP, N_WEAKB); break;
	289	default: as_bad ("%s: bad type for weak symbol", temp); break;
	290	}
	291	}
	292
85051959 ILT	293	obj_symbol_to_chars (where, symbolP);
	294	S_SET_NAME (symbolP, temp);
	295	}
	296	}
	297
	298	#endif /* ! BFD_ASSEMBLER */
	299
	300	static void
604633ae ILT	301	obj_aout_line (ignore)
604633ae ILT	302	int ignore;
85051959 ILT	303	{
	304	/* Assume delimiter is part of expression.
	305	BSD4.2 as fails with delightful bug, so we
	306	are not being incompatible here. */
	307	new_logical_line ((char *) NULL, (int) (get_absolute_expression ()));
	308	demand_empty_rest_of_line ();
	309	} /* obj_aout_line() */
fecd2382	310
02d4e923 ILT	311	/* Handle .weak. This is a GNU extension. */
	312
	313	static void
	314	obj_aout_weak (ignore)
	315	int ignore;
	316	{
	317	char *name;
	318	int c;
	319	symbolS *symbolP;
	320
	321	do
	322	{
	323	name = input_line_pointer;
	324	c = get_symbol_end ();
	325	symbolP = symbol_find_or_make (name);
	326	*input_line_pointer = c;
	327	SKIP_WHITESPACE ();
	328	S_SET_WEAK (symbolP);
	329	if (c == ',')
	330	{
	331	input_line_pointer++;
	332	SKIP_WHITESPACE ();
	333	if (*input_line_pointer == '\n')
	334	c = '\n';
	335	}
	336	}
	337	while (c == ',');
	338	demand_empty_rest_of_line ();
	339	}
	340
85051959 ILT	341	void
	342	obj_read_begin_hook ()
	343	{
4bda835f	344	}
85051959 ILT	345
85051959 ILT	346	#ifndef BFD_ASSEMBLER
fecd2382	347
85051959 ILT	348	void
	349	obj_crawl_symbol_chain (headers)
	350	object_headers *headers;
fecd2382	351	{
85051959 ILT	352	symbolS *symbolP;
	353	symbolS **symbolPP;
	354	int symbol_number = 0;
	355
85051959 ILT	356	tc_crawl_symbol_chain (headers);
	357
	358	symbolPP = &symbol_rootP; /->last symbol chain link. /
	359	while ((symbolP = *symbolPP) != NULL)
	360	{
def66e24	361	if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_DATA))
85051959 ILT	362	{
	363	S_SET_SEGMENT (symbolP, SEG_TEXT);
	364	} /* if pusing data into text */
	365
5868b1fe	366	resolve_symbol_value (symbolP);
85051959 ILT	367
	368	/* OK, here is how we decide which symbols go out into the brave
	369	new symtab. Symbols that do are:
	370
	371	* symbols with no name (stabd's?)
	372	* symbols with debug info in their N_TYPE
	373
	374	Symbols that don't are:
	375	* symbols that are registers
	376	* symbols with \1 as their 3rd character (numeric labels)
	377	* "local labels" as defined by S_LOCAL_NAME(name) if the -L
	378	switch was passed to gas.
	379
	380	All other symbols are output. We complain if a deleted
	381	symbol was marked external. */
	382
	383
	384	if (!S_IS_REGISTER (symbolP)
	385	&& (!S_GET_NAME (symbolP)
	386	\|\| S_IS_DEBUG (symbolP)
85051959 ILT	387	\|\| !S_IS_DEFINED (symbolP)
85051959 ILT	388	\|\| S_IS_EXTERNAL (symbolP)
645f842c	389	\|\| (S_GET_NAME (symbolP)[0] != '\001'
def66e24	390	&& (flag_keep_locals \|\| !S_LOCAL_NAME (symbolP)))))
85051959 ILT	391	{
	392	symbolP->sy_number = symbol_number++;
	393
	394	/* The + 1 after strlen account for the \0 at the
fecd2382	395	end of each string */
85051959 ILT	396	if (!S_IS_STABD (symbolP))
	397	{
	398	/* Ordinary case. */
	399	symbolP->sy_name_offset = string_byte_count;
	400	string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
	401	}
	402	else /* .Stabd case. */
	403	symbolP->sy_name_offset = 0;
	404	symbolPP = &(symbol_next (symbolP));
	405	}
	406	else
	407	{
	408	if (S_IS_EXTERNAL (symbolP) \|\| !S_IS_DEFINED (symbolP))
645f842c ILT	409	/* This warning should never get triggered any more.
	410	Well, maybe if you're doing twisted things with
	411	register names... */
85051959 ILT	412	{
	413	as_bad ("Local symbol %s never defined.", decode_local_label_name (S_GET_NAME (symbolP)));
	414	} /* oops. */
	415
	416	/* Unhook it from the chain */
	417	*symbolPP = symbol_next (symbolP);
	418	} /* if this symbol should be in the output */
	419	} /* for each symbol */
	420
	421	H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number);
4bda835f	422	}
fecd2382 RP	423
	424	/*
	425	* Find strings by crawling along symbol table chain.
	426	*/
	427
85051959 ILT	428	void
	429	obj_emit_strings (where)
	430	char **where;
fecd2382	431	{
85051959 ILT	432	symbolS *symbolP;
85051959 ILT	433
a39116f1	434	#ifdef CROSS_COMPILE
85051959 ILT	435	/* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
	436	md_number_to_chars (*where, string_byte_count, sizeof (string_byte_count));
	437	*where += sizeof (string_byte_count);
a39116f1	438	#else /* CROSS_COMPILE */
85051959	439	append (where, (char *) &string_byte_count, (unsigned long) sizeof (string_byte_count));
a39116f1	440	#endif /* CROSS_COMPILE */
fecd2382	441
85051959 ILT	442	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
	443	{
	444	if (S_GET_NAME (symbolP))
	445	append (&next_object_file_charP, S_GET_NAME (symbolP),
	446	(unsigned long) (strlen (S_GET_NAME (symbolP)) + 1));
	447	} /* walk symbol chain */
4bda835f	448	}
85051959 ILT	449
	450	#ifndef AOUT_VERSION
	451	#define AOUT_VERSION 0
	452	#endif
	453
	454	void
	455	obj_pre_write_hook (headers)
	456	object_headers *headers;
a39116f1	457	{
85051959 ILT	458	H_SET_DYNAMIC (headers, 0);
	459	H_SET_VERSION (headers, AOUT_VERSION);
	460	H_SET_MACHTYPE (headers, AOUT_MACHTYPE);
	461	tc_aout_pre_write_hook (headers);
4bda835f	462	}
a39116f1	463
85051959 ILT	464	void
	465	DEFUN_VOID (s_sect)
	466	{
	467	/* Strip out the section name */
	468	char *section_name;
	469	char *section_name_end;
	470	char c;
	471
	472	unsigned int len;
	473	unsigned int exp;
	474	char *save;
	475
	476	section_name = input_line_pointer;
	477	c = get_symbol_end ();
	478	section_name_end = input_line_pointer;
	479
	480	len = section_name_end - section_name;
	481	input_line_pointer++;
	482	save = input_line_pointer;
	483
	484	SKIP_WHITESPACE ();
	485	if (c == ',')
	486	{
	487	exp = get_absolute_expression ();
	488	}
	489	else if (*input_line_pointer == ',')
	490	{
	491	input_line_pointer++;
	492	exp = get_absolute_expression ();
	493	}
	494	else
	495	{
	496	input_line_pointer = save;
	497	exp = 0;
	498	}
	499	if (exp >= 1000)
	500	{
	501	as_bad ("subsegment index too high");
	502	}
	503
	504	if (strcmp (section_name, ".text") == 0)
	505	{
604633ae	506	subseg_set (SEG_TEXT, (subsegT) exp);
85051959 ILT	507	}
	508
	509	if (strcmp (section_name, ".data") == 0)
	510	{
def66e24	511	if (flag_readonly_data_in_text)
604633ae	512	subseg_set (SEG_TEXT, (subsegT) exp + 1000);
85051959	513	else
604633ae	514	subseg_set (SEG_DATA, (subsegT) exp);
85051959 ILT	515	}
	516
	517	*section_name_end = c;
	518	}
	519
	520	#endif /* ! BFD_ASSEMBLER */
fecd2382 RP	521
fecd2382 RP	522	/* end of obj-aout.c */