mri_comment_end (stop, stopc);
if (flag_mri) mri_comment_end (stop, stopc);
char *demand_copy_string PARAMS ((int *lenP));int is_it_end_of_statement PARAMS ((void));static segT get_segmented_expression PARAMS ((expressionS *expP));static segT get_known_segmented_expression PARAMS ((expressionS * expP));static void pobegin PARAMS ((void));static int get_line_sb PARAMS ((sb *));voidread_begin (){  const char *p;  pobegin ();  obj_read_begin_hook ();  /* Something close -- but not too close -- to a multiple of 1024.     The debugging malloc I'm using has 24 bytes of overhead.  */  obstack_begin (&notes, chunksize);  obstack_begin (&cond_obstack, chunksize);  /* Use machine dependent syntax */  for (p = line_separator_chars; *p; p++)    is_end_of_line[(unsigned char) *p] = 1;  /* Use more.  FIXME-SOMEDAY. */  if (flag_mri)    lex_type['?'] = 3;}/* set up pseudo-op tables */static struct hash_control *po_hash;static const pseudo_typeS potable[] ={  {"abort", s_abort, 0},  {"align", s_align_ptwo, 0},  {"ascii", stringer, 0},  {"asciz", stringer, 1},  {"balign", s_align_bytes, 0},/* block */  {"byte", cons, 1},  {"comm", s_comm, 0},  {"common", s_mri_common, 0},  {"common.s", s_mri_common, 1},  {"data", s_data, 0},  {"dc", cons, 2},  {"dc.b", cons, 1},  {"dc.d", float_cons, 'd'},  {"dc.l", cons, 4},  {"dc.s", float_cons, 'f'},  {"dc.w", cons, 2},  {"dc.x", float_cons, 'x'},  {"dcb", s_space, 2},  {"dcb.b", s_space, 1},  {"dcb.d", s_float_space, 'd'},  {"dcb.l", s_space, 4},  {"dcb.s", s_float_space, 'f'},  {"dcb.w", s_space, 2},  {"dcb.x", s_float_space, 'x'},  {"ds", s_space, 2},  {"ds.b", s_space, 1},  {"ds.d", s_space, 8},  {"ds.l", s_space, 4},  {"ds.p", s_space, 12},  {"ds.s", s_space, 4},  {"ds.w", s_space, 2},  {"ds.x", s_space, 12},  {"debug", s_ignore, 0},#ifdef S_SET_DESC  {"desc", s_desc, 0},#endif/* dim */  {"double", float_cons, 'd'},/* dsect */  {"eject", listing_eject, 0},	/* Formfeed listing */  {"else", s_else, 0},  {"elsec", s_else, 0},  {"end", s_end, 0},  {"endc", s_endif, 0},  {"endif", s_endif, 0},/* endef */  {"equ", s_set, 0},  {"err", s_err, 0},  {"exitm", s_mexit, 0},/* extend */  {"extern", s_ignore, 0},	/* We treat all undef as ext */  {"appfile", s_app_file, 1},  {"appline", s_app_line, 0},  {"fail", s_fail, 0},  {"file", s_app_file, 0},  {"fill", s_fill, 0},  {"float", float_cons, 'f'},  {"format", s_ignore, 0},  {"global", s_globl, 0},  {"globl", s_globl, 0},  {"hword", cons, 2},  {"if", s_if, (int) O_ne},  {"ifc", s_ifc, 0},  {"ifdef", s_ifdef, 0},  {"ifeq", s_if, (int) O_eq},  {"ifeqs", s_ifeqs, 0},  {"ifge", s_if, (int) O_ge},  {"ifgt", s_if, (int) O_gt},  {"ifle", s_if, (int) O_le},  {"iflt", s_if, (int) O_lt},  {"ifnc", s_ifc, 1},  {"ifndef", s_ifdef, 1},  {"ifne", s_if, (int) O_ne},  {"ifnes", s_ifeqs, 1},  {"ifnotdef", s_ifdef, 1},  {"include", s_include, 0},  {"int", cons, 4},  {"irp", s_irp, 0},  {"irep", s_irp, 0},  {"irpc", s_irp, 1},  {"irepc", s_irp, 1},  {"lcomm", s_lcomm, 0},  {"lflags", listing_flags, 0},	/* Listing flags */  {"list", listing_list, 1},	/* Turn listing on */  {"llen", listing_psize, 1},  {"long", cons, 4},  {"lsym", s_lsym, 0},  {"macro", s_macro, 0},  {"mexit", s_mexit, 0},  {"noformat", s_ignore, 0},  {"nolist", listing_list, 0},	/* Turn listing off */  {"nopage", listing_nopage, 0},  {"octa", cons, 16},  {"offset", s_struct, 0},  {"org", s_org, 0},  {"p2align", s_align_ptwo, 0},  {"page", listing_eject, 0},  {"plen", listing_psize, 0},  {"print", s_print, 0},  {"psize", listing_psize, 0},	/* set paper size */  {"purgem", s_purgem, 0},  {"quad", cons, 8},  {"rep", s_rept, 0},  {"rept", s_rept, 0},  {"rva", s_rva, 4},  {"sbttl", listing_title, 1},	/* Subtitle of listing *//* scl *//* sect */  {"set", s_set, 0},  {"short", cons, 2},  {"single", float_cons, 'f'},/* size */  {"space", s_space, 0},  {"spc", s_ignore, 0},  {"stabd", s_stab, 'd'},  {"stabn", s_stab, 'n'},  {"stabs", s_stab, 's'},  {"string", stringer, 1},  {"struct", s_struct, 0},/* tag */  {"text", s_text, 0},  /* This is for gcc to use.  It's only just been added (2/94), so gcc     won't be able to use it for a while -- probably a year or more.     But once this has been released, check with gcc maintainers     before deleting it or even changing the spelling.  */  {"this_GCC_requires_the_GNU_assembler", s_ignore, 0},  /* If we're folding case -- done for some targets, not necessarily     all -- the above string in an input file will be converted to     this one.  Match it either way...  */  {"this_gcc_requires_the_gnu_assembler", s_ignore, 0},  {"title", listing_title, 0},	/* Listing title */  {"ttl", listing_title, 0},/* type *//* use *//* val */  {"xcom", s_comm, 0},  {"xdef", s_globl, 0},  {"xref", s_ignore, 0},  {"xstabs", s_xstab, 's'},  {"word", cons, 2},  {"zero", s_space, 0},  {NULL}			/* end sentinel */};static int pop_override_ok = 0;static const char *pop_table_name;voidpop_insert (table)     const pseudo_typeS *table;{  const char *errtxt;  const pseudo_typeS *pop;  for (pop = table; pop->poc_name; pop++)    {      errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop);      if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists")))	as_fatal ("error constructing %s pseudo-op table", pop_table_name);    }}#ifndef md_pop_insert#define md_pop_insert()		pop_insert(md_pseudo_table)#endif#ifndef obj_pop_insert#define obj_pop_insert()	pop_insert(obj_pseudo_table)#endifstatic void pobegin (){  po_hash = hash_new ();  /* Do the target-specific pseudo ops. */  pop_table_name = "md";  md_pop_insert ();  /* Now object specific.  Skip any that were in the target table. */  pop_table_name = "obj";  pop_override_ok = 1;  obj_pop_insert ();  /* Now portable ones.  Skip any that we've seen already. */  pop_table_name = "standard";  pop_insert (potable);}#define HANDLE_CONDITIONAL_ASSEMBLY()					\  if (ignore_input ())							\    {									\      while (! is_end_of_line[(unsigned char) *input_line_pointer++])	\	if (input_line_pointer == buffer_limit)				\	  break;							\      continue;								\    }/* This function is used when scrubbing the characters between #APP   and #NO_APP.  */static char *scrub_string;static char *scrub_string_end;static intscrub_from_string (from)     char **from;{  int size;  *from = scrub_string;  size = scrub_string_end - scrub_string;  scrub_string = scrub_string_end;  return size;}/*	read_a_source_file() * * We read the file, putting things into a web that * represents what we have been reading. */void read_a_source_file (name)     char *name;{  register char c;  register char *s;		/* string of symbol, '\0' appended */  register int temp;  pseudo_typeS *pop;  buffer = input_scrub_new_file (name);  listing_file (name);  listing_newline ("");  while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0)    {				/* We have another line to parse. */      know (buffer_limit[-1] == '\n');	/* Must have a sentinel. */    contin:			/* JF this goto is my fault I admit it.				   Someone brave please re-write the whole				   input section here?  Pleeze???  */      while (input_line_pointer < buffer_limit)	{	  /* We have more of this buffer to parse. */	  /*	   * We now have input_line_pointer->1st char of next line.	   * If input_line_pointer [-1] == '\n' then we just	   * scanned another line: so bump line counters.	   */	  if (is_end_of_line[(unsigned char) input_line_pointer[-1]])	    {#ifdef md_start_line_hook	      md_start_line_hook ();#endif	      if (input_line_pointer[-1] == '\n')		bump_line_counters ();	      line_label = NULL;	      if (flag_mri#ifdef LABELS_WITHOUT_COLONS		  || 1#endif		  )		{		  /* Text at the start of a line must be a label, we		     run down and stick a colon in.  */		  if (is_name_beginner (*input_line_pointer))		    {		      char *line_start = input_line_pointer;		      char c;		      HANDLE_CONDITIONAL_ASSEMBLY ();		      c = get_symbol_end ();		      /* In MRI mode, the EQU pseudoop must be			 handled specially.  */		      if (flag_mri)			{			  char *rest = input_line_pointer + 1;			  if (*rest == ':')			    ++rest;			  if (*rest == ' ' || *rest == '\t')			    ++rest;			  if ((strncasecmp (rest, "EQU", 3) == 0			       || strncasecmp (rest, "SET", 3) == 0)			      && (rest[3] == ' ' || rest[3] == '\t'))			    {			      input_line_pointer = rest + 3;			      equals (line_start);			      continue;			    }			}		      line_label = colon (line_start);		      *input_line_pointer = c;		      if (c == ':')			input_line_pointer++;		    }		}	    }	  /*	   * We are at the begining of a line, or similar place.	   * We expect a well-formed assembler statement.	   * A "symbol-name:" is a statement.	   *	   * Depending on what compiler is used, the order of these tests	   * may vary to catch most common case 1st.	   * Each test is independent of all other tests at the (top) level.	   * PLEASE make a compiler that doesn't use this assembler.	   * It is crufty to waste a compiler's time encoding things for this	   * assembler, which then wastes more time decoding it.	   * (And communicating via (linear) files is silly!	   * If you must pass stuff, please pass a tree!)	   */	  if ((c = *input_line_pointer++) == '\t'	      || c == ' '	      || c == '\f'	      || c == 0)	    {	      c = *input_line_pointer++;	    }	  know (c != ' ');	/* No further leading whitespace. */	  LISTING_NEWLINE ();	  /*	   * C is the 1st significant character.	   * Input_line_pointer points after that character.	   */	  if (is_name_beginner (c))	    {	      /* want user-defined label or pseudo/opcode */	      HANDLE_CONDITIONAL_ASSEMBLY ();	      s = --input_line_pointer;	      c = get_symbol_end ();	/* name's delimiter */	      /*	       * C is character after symbol.	       * That character's place in the input line is now '\0'.	       * S points to the beginning of the symbol.	       *   [In case of pseudo-op, s->'.'.]	       * Input_line_pointer->'\0' where c was.	       */	      if (TC_START_LABEL(c, input_line_pointer))		{		  if (flag_mri)		    {		      char *rest = input_line_pointer + 1;		      /* In MRI mode, \tsym: set 0 is permitted.  */		      if (*rest == ':')			++rest;		      if (*rest == ' ' || *rest == '\t')			++rest;		      if ((strncasecmp (rest, "EQU", 3) == 0			   || strncasecmp (rest, "SET", 3) == 0)			  && (rest[3] == ' ' || rest[3] == '\t'))			{			  input_line_pointer = rest + 3;			  equals (s);			  continue;			}		    }		  line_label = colon (s);	/* user-defined label */		  *input_line_pointer++ = ':';	/* Put ':' back for error messages' sake. */		  /* Input_line_pointer->after ':'. */		  SKIP_WHITESPACE ();		}	      else if (c == '='		       || (input_line_pointer[1] == '='#ifdef TC_EQUAL_IN_INSN			   && ! TC_EQUAL_IN_INSN (c, input_line_pointer)#endif			   ))		{		  equals (s);		  demand_empty_rest_of_line ();		}	      else		{		/* expect pseudo-op or machine instruction */		  pop = NULL;#define IGNORE_OPCODE_CASE#ifdef IGNORE_OPCODE_CASE		  {		    char *s2 = s;		    while (*s2)		      {			if (isupper (*s2))			  *s2 = tolower (*s2);			s2++;		      }		  }#endif#ifndef MRI_MODE_NEEDS_PSEUDO_DOT#define MRI_MODE_NEEDS_PSEUDO_DOT 0#endif		  if ((flag_mri && ! MRI_MODE_NEEDS_PSEUDO_DOT)#ifdef NO_PSEUDO_DOT		      || 1#endif		      )		    {		      /* The MRI assembler and the m88k use pseudo-ops                         without a period.  */		      pop = (pseudo_typeS *) hash_find (po_hash, s);		      if (pop != NULL && pop->poc_handler == NULL)			pop = NULL;		    }		  if (pop != NULL		      || ((! flag_mri || MRI_MODE_NEEDS_PSEUDO_DOT)			  && *s == '.'))		    {		      /*		       * PSEUDO - OP.		       *		       * WARNING: c has next char, which may be end-of-line.		       * We lookup the pseudo-op table with s+1 because we		       * already know that the pseudo-op begins with a '.'.		       */		      if (pop == NULL)			pop = (pseudo_typeS *) hash_find (po_hash, s + 1);		      /* In MRI mode, we may need to insert an                         automatic alignment directive.  What a hack                         this is.  */		      if (mri_pending_align			  && (pop == NULL			      || ! ((pop->poc_handler == cons				     && pop->poc_val == 1)				    || (pop->poc_handler == s_space					&& pop->poc_val == 1))))			{			  do_align (1, (char *) NULL);			  mri_pending_align = 0;			}		      /* Print the error msg now, while we still can */		      if (pop == NULL)			{			  as_bad ("Unknown pseudo-op:  `%s'", s);			  *input_line_pointer = c;			  s_ignore (0);			  continue;			}		      /* Put it back for error messages etc. */		      *input_line_pointer = c;		      /* The following skip of whitespace is compulsory.			 A well shaped space is sometimes all that separates			 keyword from operands. */		      if (c == ' ' || c == '\t')			input_line_pointer++;		      /*		       * Input_line is restored.		       * Input_line_pointer->1st non-blank char		       * after pseudo-operation.		       */		      (*pop->poc_handler) (pop->poc_val);		      /* If that was .end, just get out now.  */		      if (pop->poc_handler == s_end)			goto quit;		    }		  else		    {		/* machine instruction */		      int inquote = 0;		      if (mri_pending_align)			{			  do_align (1, (char *) NULL);			  mri_pending_align = 0;			}		      /* WARNING: c has char, which may be end-of-line. */		      /* Also: input_line_pointer->`\0` where c was. */		      *input_line_pointer = c;		      while (!is_end_of_line[(unsigned char) *input_line_pointer]			     || inquote#ifdef TC_EOL_IN_INSN			     || TC_EOL_IN_INSN (input_line_pointer)#endif			     )			{			  if (flag_mri && *input_line_pointer == '\'')			    inquote = ! inquote;			  input_line_pointer++;			}		      c = *input_line_pointer;		      *input_line_pointer = '\0';#ifdef OBJ_GENERATE_ASM_LINENO		      if (generate_asm_lineno == 0)			{		          if (ecoff_no_current_file ())			    generate_asm_lineno = 1;			}		      if (generate_asm_lineno == 1)		        {			  unsigned int lineno;			  char *s;			  as_where (&s, &lineno);			  OBJ_GENERATE_ASM_LINENO (s, lineno);		        }#endif		      if (macro_defined)			{			  sb out;			  const char *err;			  if (check_macro (s, &out, '\0', &err))			    {			      if (err != NULL)				as_bad (err);			      *input_line_pointer++ = c;			      input_scrub_include_sb (&out,						      input_line_pointer);			      sb_kill (&out);			      buffer_limit =				input_scrub_next_buffer (&input_line_pointer);			      continue;			    }			}		      md_assemble (s);	/* Assemble 1 instruction. */		      *input_line_pointer++ = c;		      /* We resume loop AFTER the end-of-line from			 this instruction. */		    }		/* if (*s=='.') */		}		/* if c==':' */	      continue;	    }			/* if (is_name_beginner(c) */	  /* Empty statement?  */	  if (is_end_of_line[(unsigned char) c])	    continue;	  if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB)	      && isdigit (c))	    {	      /* local label  ("4:") */	      char *backup = input_line_pointer;	      HANDLE_CONDITIONAL_ASSEMBLY ();	      temp = c - '0';	      while (isdigit (*input_line_pointer))		{		  temp = (temp * 10) + *input_line_pointer - '0';		  ++input_line_pointer;		}		/* read the whole number */	      if (LOCAL_LABELS_DOLLAR		  && *input_line_pointer == '$'		  && *(input_line_pointer + 1) == ':')		{		  input_line_pointer += 2;		  if (dollar_label_defined (temp))		    {		      as_fatal ("label \"%d$\" redefined", temp);		    }		  define_dollar_label (temp);		  colon (dollar_label_name (temp, 0));		  continue;		}	      if (LOCAL_LABELS_FB		  && *input_line_pointer++ == ':')		{		  fb_label_instance_inc (temp);		  colon (fb_label_name (temp, 0));		  continue;		}	      input_line_pointer = backup;	    }			/* local label  ("4:") */	  if (c && strchr (line_comment_chars, c))	    {			/* Its a comment.  Better say APP or NO_APP */	      char *ends;	      char *new_buf;	      char *new_tmp;	      unsigned int new_length;	      char *tmp_buf = 0;	      bump_line_counters ();	      s = input_line_pointer;	      if (strncmp (s, "APP\n", 4))		continue;	/* We ignore it */	      s += 4;	      ends = strstr (s, "#NO_APP\n");	      if (!ends)		{		  unsigned int tmp_len;		  unsigned int num;		  /* The end of the #APP wasn't in this buffer.  We		     keep reading in buffers until we find the #NO_APP		     that goes with this #APP  There is one.  The specs		     guarentee it. . . */		  tmp_len = buffer_limit - s;		  tmp_buf = xmalloc (tmp_len + 1);		  memcpy (tmp_buf, s, tmp_len);		  do		    {		      new_tmp = input_scrub_next_buffer (&buffer);		      if (!new_tmp)			break;		      else			buffer_limit = new_tmp;		      input_line_pointer = buffer;		      ends = strstr (buffer, "#NO_APP\n");		      if (ends)			num = ends - buffer;		      else			num = buffer_limit - buffer;		      tmp_buf = xrealloc (tmp_buf, tmp_len + num);		      memcpy (tmp_buf + tmp_len, buffer, num);		      tmp_len += num;		    }		  while (!ends);		  input_line_pointer = ends ? ends + 8 : NULL;		  s = tmp_buf;		  ends = s + tmp_len;		}	      else		{		  input_line_pointer = ends + 8;		}	      scrub_string = s;	      scrub_string_end = ends;	      new_length = ends - s;	      new_buf = (char *) xmalloc (new_length);	      new_tmp = new_buf;	      for (;;)		{		  int space;		  int size;		  space = (new_buf + new_length) - new_tmp;		  size = do_scrub_chars (scrub_from_string, new_tmp, space);		  if (size < space)		    {		      new_tmp += size;		      break;		    }		  new_buf = xrealloc (new_buf, new_length + 100);		  new_tmp = new_buf + new_length;		  new_length += 100;		}	      if (tmp_buf)		free (tmp_buf);	      old_buffer = buffer;	      old_input = input_line_pointer;	      old_limit = buffer_limit;	      buffer = new_buf;	      input_line_pointer = new_buf;	      buffer_limit = new_tmp;	      continue;	    }	  HANDLE_CONDITIONAL_ASSEMBLY ();	  /* as_warn("Junk character %d.",c);  Now done by ignore_rest */	  input_line_pointer--;	/* Report unknown char as ignored. */	  ignore_rest_of_line ();	}			/* while (input_line_pointer<buffer_limit) */#ifdef md_after_pass_hook      md_after_pass_hook ();#endif      if (old_buffer)	{	  free (buffer);	  bump_line_counters ();	  if (old_input != 0)	    {	      buffer = old_buffer;	      input_line_pointer = old_input;	      buffer_limit = old_limit;	      old_buffer = 0;	      goto contin;	    }	}    }				/* while (more buffers to scan) */ quit:  input_scrub_close ();		/* Close the input file */}/* For most MRI pseudo-ops, the line actually ends at the first   nonquoted space.  This function looks for that point, stuffs a null   in, and sets *STOPCP to the character that used to be there, and   returns the location.   Until I hear otherwise, I am going to assume that this is only true   for the m68k MRI assembler.  */char *mri_comment_field (stopcp)     char *stopcp;{#ifdef TC_M68K  char *s;  int inquote = 0;  know (flag_mri);  for (s = input_line_pointer;       ((! is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t')	|| inquote);       s++)    {      if (*s == '\'')	inquote = ! inquote;    }  *stopcp = *s;  *s = '\0';  return s;#else  char *s;  for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++)    ;  *stopcp = *s;  *s = '\0';  return s;#endif}/* Skip to the end of an MRI comment field.  */voidmri_comment_end (stop, stopc)     char *stop;     int stopc;{  know (flag_mri);  input_line_pointer = stop;  *stop = stopc;  while (! is_end_of_line[(unsigned char) *input_line_pointer])    ++input_line_pointer;}void s_abort (ignore)     int ignore;{  as_fatal (".abort detected.  Abandoning ship.");}/* Guts of .align directive.  */static void do_align (n, fill)     int n;     char *fill;{#ifdef md_do_align  md_do_align (n, fill, just_record_alignment);#endif  if (!fill)    {      /* @@ Fix this right for BFD!  */      static char zero;      static char nop_opcode = NOP_OPCODE;      if (now_seg != data_section && now_seg != bss_section)	{	  fill = &nop_opcode;	}      else	{	  fill = &zero;	}    }  /* Only make a frag if we HAVE to. . . */  if (n && !need_pass_2)    frag_align (n, *fill);#ifdef md_do_align just_record_alignment:#endif  record_alignment (now_seg, n);}/* For machines where ".align 4" means align to a 4 byte boundary. */void s_align_bytes (arg)     int arg;{  register unsigned int temp;  char temp_fill;  unsigned int i = 0;  unsigned long max_alignment = 1 << 15;  char *stop = NULL;  char stopc;  if (flag_mri)    stop = mri_comment_field (&stopc);  if (is_end_of_line[(unsigned char) *input_line_pointer])    temp = arg;			/* Default value from pseudo-op table */  else    temp = get_absolute_expression ();  if (temp > max_alignment)    {      as_bad ("Alignment too large: %d. assumed.", temp = max_alignment);    }  /* For the sparc, `.align (1<<n)' actually means `.align n' so we     have to convert it.  */  if (temp != 0)    {      for (i = 0; (temp & 1) == 0; temp >>= 1, ++i)	;    }  if (temp != 1)    as_bad ("Alignment not a power of 2");  temp = i;  if (*input_line_pointer == ',')    {      input_line_pointer++;      temp_fill = get_absolute_expression ();      do_align (temp, &temp_fill);    }  else    do_align (temp, (char *) 0);  if (flag_mri)    mri_comment_end (stop, stopc);  demand_empty_rest_of_line ();}/* For machines where ".align 4" means align to 2**4 boundary. */void s_align_ptwo (ignore)     int ignore;{  register int temp;  char temp_fill;  long max_alignment = 15;  char *stop = NULL;  char stopc;  if (flag_mri)    stop = mri_comment_field (&stopc);  temp = get_absolute_expression ();  if (temp > max_alignment)    as_bad ("Alignment too large: %d. assumed.", temp = max_alignment);  else if (temp < 0)    {      as_bad ("Alignment negative. 0 assumed.");      temp = 0;    }  if (*input_line_pointer == ',')    {      input_line_pointer++;      temp_fill = get_absolute_expression ();      do_align (temp, &temp_fill);    }  else    do_align (temp, (char *) 0);  if (flag_mri)    mri_comment_end (stop, stopc);  demand_empty_rest_of_line ();}void s_comm (ignore)     int ignore;{  register char *name;  register char c;  register char *p;  offsetT temp;  register symbolS *symbolP;  char *stop = NULL;  char stopc;  if (flag_mri)    stop = mri_comment_field (&stopc);  name = input_line_pointer;  c = get_symbol_end ();  /* just after name is now '\0' */  p = input_line_pointer;  *p = c;  SKIP_WHITESPACE ();  if (*input_line_pointer != ',')    {      as_bad ("Expected comma after symbol-name: rest of line ignored.");      if (flag_mri)	mri_comment_end (stop, stopc);      ignore_rest_of_line ();      return;    }  input_line_pointer++;		/* skip ',' */  if ((temp = get_absolute_expression ()) < 0)    {      as_warn (".COMMon length (%ld.) <0! Ignored.", (long) temp);      if (flag_mri)	mri_comment_end (stop, stopc);      ignore_rest_of_line ();      return;    }  *p = 0;  symbolP = symbol_find_or_make (name);  *p = c;  if (S_IS_DEFINED (symbolP))    {      as_bad ("Ignoring attempt to re-define symbol `%s'.",	      S_GET_NAME (symbolP));      if (flag_mri)	mri_comment_end (stop, stopc);      ignore_rest_of_line ();      return;    }  if (S_GET_VALUE (symbolP))    {      if (S_GET_VALUE (symbolP) != (valueT) temp)	as_bad ("Length of .comm \"%s\" is already %ld. Not changed to %ld.",		S_GET_NAME (symbolP),		(long) S_GET_VALUE (symbolP),		(long) temp);    }  else    {      S_SET_VALUE (symbolP, (valueT) temp);      S_SET_EXTERNAL (symbolP);    }#ifdef OBJ_VMS  {    extern int flag_one;    if ( (!temp) || !flag_one)      S_GET_OTHER(symbolP) = const_flag;  }#endif /* not OBJ_VMS */  know (symbolP->sy_frag == &zero_address_frag);  if (flag_mri)    mri_comment_end (stop, stopc);  demand_empty_rest_of_line ();}				/* s_comm() *//* The MRI COMMON pseudo-op.  We handle this by creating a common   symbol with the appropriate name.  We make s_space do the right   thing by increasing the size.  */voids_mri_common (small)     int small;{  char *name;  char c;  char *alc = NULL;  symbolS *sym;  offsetT align;  char *stop = NULL;  char stopc;  if (! flag_mri)    {      s_comm (0);      return;    }  stop = mri_comment_field (&stopc);  SKIP_WHITESPACE ();  name = input_line_pointer;  if (! isdigit ((unsigned char) *name))    c = get_symbol_end ();  else    {      do	{	  ++input_line_pointer;	}      while (isdigit ((unsigned char) *input_line_pointer));      c = *input_line_pointer;      *input_line_pointer = '\0';      if (line_label != NULL)	{	  alc = (char *) xmalloc (strlen (S_GET_NAME (line_label))				  + (input_line_pointer - name)				  + 1);	  sprintf (alc, "%s%s", name, S_GET_NAME (line_label));	  name = alc;	}    }  sym = symbol_find_or_make (name);  *input_line_pointer = c;  if (alc != NULL)    free (alc);  if (*input_line_pointer != ',')    align = 0;  else    {      ++input_line_pointer;      align = get_absolute_expression ();    }  if (S_IS_DEFINED (sym))    {#if defined (S_IS_COMMON) || defined (BFD_ASSEMBLER)      if (! S_IS_COMMON (sym))#endif	{	  as_bad ("attempt to re-define symbol `%s'", S_GET_NAME (sym));	  mri_comment_end (stop, stopc);	  ignore_rest_of_line ();	  return;	}    }  S_SET_EXTERNAL (sym);  mri_common_symbol = sym;#ifdef S_SET_ALIGN  if (align != 0)    S_SET_ALIGN (sym, align);#endif  if (line_label != NULL)    {      line_label->sy_value.X_op = O_symbol;      line_label->sy_value.X_add_symbol = sym;      line_label->sy_value.X_add_number = S_GET_VALUE (sym);      line_label->sy_frag = &zero_address_frag;      S_SET_SEGMENT (line_label, expr_section);    }  /* FIXME: We just ignore the small argument, which distinguishes     COMMON and COMMON.S.  I don't know what we can do about it.  */  /* Ignore the type and hptype.  */  if (*input_line_pointer == ',')    input_line_pointer += 2;  if (*input_line_pointer == ',')    input_line_pointer += 2;  mri_comment_end (stop, stopc);  demand_empty_rest_of_line ();}voids_data (ignore)     int ignore;{  segT section;  register int temp;  temp = get_absolute_expression ();  if (flag_readonly_data_in_text)    {      section = text_section;      temp += 1000;    }  else    section = data_section;  subseg_set (section, (subsegT) temp);#ifdef OBJ_VMS  const_flag = 0;#endif  demand_empty_rest_of_line ();}/* Handle the .appfile pseudo-op.  This is automatically generated by   do_scrub_chars when a preprocessor # line comment is seen with a   file name.  This default definition may be overridden by the object   or CPU specific pseudo-ops.  This function is also the default   definition for .file; the APPFILE argument is 1 for .appfile, 0 for   .file.  */void s_app_file (appfile)     int appfile;{  register char *s;  int length;  /* Some assemblers tolerate immediately following '"' */  if ((s = demand_copy_string (&length)) != 0)    {      /* If this is a fake .appfile, a fake newline was inserted into	 the buffer.  Passing -2 to new_logical_line tells it to	 account for it.  */      new_logical_line (s, appfile ? -2 : -1);      demand_empty_rest_of_line ();#ifdef LISTING      if (listing)	listing_source_file (s);#endif    }#ifdef obj_app_file  obj_app_file (s);#endif}/* Handle the .appline pseudo-op.  This is automatically generated by   do_scrub_chars when a preprocessor # line comment is seen.  This   default definition may be overridden by the object or CPU specific   pseudo-ops.  */voids_app_line (ignore)     int ignore;{  int l;  /* The given number is that of the next line.  */  l = get_absolute_expression () - 1;  if (l < 0)    /* Some of the back ends can't deal with non-positive line numbers.       Besides, it's silly.  */    as_warn ("Line numbers must be positive; line number %d rejected.", l+1);  else    {      new_logical_line ((char *) NULL, l);#ifdef LISTING      if (listing)	listing_source_line (l);#endif    }  demand_empty_rest_of_line ();}/* Handle the .end pseudo-op.  Actually, the real work is done in   read_a_source_file.  */voids_end (ignore)     int ignore;{  if (flag_mri)    {      /* The MRI assembler permits the start symbol to follow .end,         but we don't support that.  */      SKIP_WHITESPACE ();      if (! is_end_of_line[(unsigned char) *input_line_pointer]	  && *input_line_pointer != '*'	  && *input_line_pointer != '!')	as_warn ("start address not supported");    }}/* Handle the .err pseudo-op.  */voids_err (ignore)     int ignore;{  as_bad (".err encountered");  demand_empty_rest_of_line ();}/* Handle the MRI fail pseudo-op.  */voids_fail (ignore)     int ignore;{  offsetT temp;  char *stop = NULL;  char stopc;  if (flag_mri)    stop = mri_comment_field (&stopc);  temp = get_absolute_expression ();  if (temp >= 500)    as_warn (".fail %ld encountered", (long) temp);  else    as_bad (".fail %ld encountered", (long) temp);  if (flag_mri)    mri_comment_end (stop, stopc);  demand_empty_rest_of_line ();}void s_fill (ignore)     int ignore;{  long temp_repeat = 0;  long temp_size = 1;  register long temp_fill = 0;  char *p;  temp_repeat = get_absolute_expression ();  if (*input_line_pointer == ',')    {      input_line_pointer++;      temp_size = get_absolute_expression ();      if (*input_line_pointer == ',')	{	  input_line_pointer++;	  temp_fill = get_absolute_expression ();	}    }  /* This is to be compatible with BSD 4.2 AS, not for any rational reason.  */#define BSD_FILL_SIZE_CROCK_8 (8)  if (temp_size > BSD_FILL_SIZE_CROCK_8)    {      as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8);      temp_size = BSD_FILL_SIZE_CROCK_8;    }  if (temp_size < 0)    {      as_warn ("Size negative: .fill ignored.");      temp_size = 0;    }  else if (temp_repeat <= 0)    {      as_warn ("Repeat < 0, .fill ignored");      temp_size = 0;    }  if (temp_size && !need_pass_2)    {      p = frag_var (rs_fill, (int) temp_size, (int) temp_size, (relax_substateT) 0, (symbolS *) 0, temp_repeat, (char *) 0);      memset (p, 0, (unsigned int) temp_size);      /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX       * flavoured AS.  The following bizzare behaviour is to be       * compatible with above.  I guess they tried to take up to 8       * bytes from a 4-byte expression and they forgot to sign       * extend. Un*x Sux. */#define BSD_FILL_SIZE_CROCK_4 (4)      md_number_to_chars (p, (valueT) temp_fill,			  (temp_size > BSD_FILL_SIZE_CROCK_4			   ? BSD_FILL_SIZE_CROCK_4			   : (int) temp_size));      /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes)       * but emits no error message because it seems a legal thing to do.       * It is a degenerate case of .fill but could be emitted by a compiler.       */    }  demand_empty_rest_of_line ();}void s_globl (ignore)     int ignore;{  char *name;  int c;  symbolS *symbolP;  char *stop = NULL;  char stopc;  if (flag_mri)    stop = mri_comment_field (&stopc);  do    {      name = input_line_pointer;      c = get_symbol_end ();      symbolP = symbol_find_or_make (name);      *input_line_pointer = c;      SKIP_WHITESPACE ();      S_SET_EXTERNAL (symbolP);      if (c == ',')	{	  input_line_pointer++;	  SKIP_WHITESPACE ();	  if (*input_line_pointer == '\n')	    c = '\n';	}    }  while (c == ',');  if (flag_mri)    mri_comment_end (stop, stopc);  demand_empty_rest_of_line ();}/* Handle the MRI IRP and IRPC pseudo-ops.  */voids_irp (irpc)     int irpc;{  char *file;  unsigned int line;  sb s;  const char *err;  sb out;  as_where (&file, &line);  sb_new (&s);  while (! is_end_of_line[(unsigned char) *input_line_pointer])    sb_add_char (&s, *input_line_pointer++);  sb_new (&out);  err = expand_irp (irpc, 0, &s, &out, get_line_sb, '\0');  if (err != NULL)    as_bad_where (file, line, "%s", err);  sb_kill (&s);  input_scrub_include_sb (&out, input_line_pointer);  sb_kill (&out);  buffer_limit = input_scrub_next_buffer (&input_line_pointer);}void s_lcomm (needs_align)     /* 1 if this was a ".bss" directive, which may require a 3rd argument	(alignment); 0 if it was an ".lcomm" (2 args only)  */     int needs_align;{  register char *name;  register char c;  register char *p;  register int temp;  register symbolS *symbolP;  segT current_seg = now_seg;  subsegT current_subseg = now_subseg;  const int max_alignment = 15;  int align = 0;  segT bss_seg = bss_section;  name = input_line_pointer;  c = get_symbol_end ();  p = input_line_pointer;  *p = c;  SKIP_WHITESPACE ();  /* Accept an optional comma after the name.  The comma used to be     required, but Irix 5 cc does not generate it.  */  if (*input_line_pointer == ',')    {      ++input_line_pointer;      SKIP_WHITESPACE ();    }  if (*input_line_pointer == '\n')    {      as_bad ("Missing size expression");      return;    }  if ((temp = get_absolute_expression ()) < 0)    {      as_warn ("BSS length (%d.) <0! Ignored.", temp);      ignore_rest_of_line ();      return;    }#if defined (TC_MIPS) || defined (TC_ALPHA)  if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour      || OUTPUT_FLAVOR == bfd_target_elf_flavour)    {      /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss.  */      if (temp <= bfd_get_gp_size (stdoutput))	{	  bss_seg = subseg_new (".sbss", 1);	  seg_info (bss_seg)->bss = 1;	}    }#endif   if (!needs_align)     {       /* FIXME. This needs to be machine independent. */       if (temp >= 8)	 align = 3;       else if (temp >= 4)	 align = 2;       else if (temp >= 2)	 align = 1;       else	 align = 0;       record_alignment(bss_seg, align);     }  if (needs_align)    {      align = 0;      SKIP_WHITESPACE ();      if (*input_line_pointer != ',')	{	  as_bad ("Expected comma after size");	  ignore_rest_of_line ();	  return;	}      input_line_pointer++;      SKIP_WHITESPACE ();      if (*input_line_pointer == '\n')	{	  as_bad ("Missing alignment");	  return;	}      align = get_absolute_expression ();      if (align > max_alignment)	{	  align = max_alignment;	  as_warn ("Alignment too large: %d. assumed.", align);	}      else if (align < 0)	{	  align = 0;	  as_warn ("Alignment negative. 0 assumed.");	}      record_alignment (bss_seg, align);    }				/* if needs align */  else    {      /* Assume some objects may require alignment on some systems.  */#ifdef TC_ALPHA      if (temp > 1)	{	  align = ffs (temp) - 1;	  if (temp % (1 << align))	    abort ();	}#endif    }  *p = 0;  symbolP = symbol_find_or_make (name);  *p = c;  if (#if defined(OBJ_AOUT) | defined(OBJ_BOUT)       S_GET_OTHER (symbolP) == 0 &&       S_GET_DESC (symbolP) == 0 &&#endif /* OBJ_AOUT or OBJ_BOUT */       (S_GET_SEGMENT (symbolP) == bss_seg	|| (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0)))    {      char *pfrag;      subseg_set (bss_seg, 1);      if (align)	frag_align (align, 0);					/* detach from old frag	*/      if (S_GET_SEGMENT (symbolP) == bss_seg)	symbolP->sy_frag->fr_symbol = NULL;      symbolP->sy_frag = frag_now;      pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP,			temp, (char *)0);      *pfrag = 0;      S_SET_SEGMENT (symbolP, bss_seg);#ifdef OBJ_COFF      /* The symbol may already have been created with a preceding         ".globl" directive -- be careful not to step on storage class         in that case.  Otherwise, set it to static. */      if (S_GET_STORAGE_CLASS (symbolP) != C_EXT)	{	  S_SET_STORAGE_CLASS (symbolP, C_STAT);	}#endif /* OBJ_COFF */    }  else    as_bad ("Ignoring attempt to re-define symbol `%s'.",	    S_GET_NAME (symbolP));  subseg_set (current_seg, current_subseg);  demand_empty_rest_of_line ();}				/* s_lcomm() */void s_lsym (ignore)     int ignore;{  register char *name;  register char c;  register char *p;  expressionS exp;  register symbolS *symbolP;  /* we permit ANY defined expression: BSD4.2 demands constants */  name = input_line_pointer;  c = get_symbol_end ();  p = input_line_pointer;  *p = c;  SKIP_WHITESPACE ();  if (*input_line_pointer != ',')    {      *p = 0;      as_bad ("Expected comma after name \"%s\"", name);      *p = c;      ignore_rest_of_line ();      return;    }  input_line_pointer++;  expression (&exp);  if (exp.X_op != O_constant      && exp.X_op != O_register)    {      as_bad ("bad expression");      ignore_rest_of_line ();      return;    }  *p = 0;  symbolP = symbol_find_or_make (name);  /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 &&     symbolP->sy_desc == 0) out of this test because coff doesn't have     those fields, and I can't see when they'd ever be tripped.  I     don't think I understand why they were here so I may have     introduced a bug. As recently as 1.37 didn't have this test     anyway.  xoxorich. */  if (S_GET_SEGMENT (symbolP) == undefined_section      && S_GET_VALUE (symbolP) == 0)    {      /* The name might be an undefined .global symbol; be sure to	 keep the "external" bit. */      S_SET_SEGMENT (symbolP,		     (exp.X_op == O_constant		      ? absolute_section		      : reg_section));      S_SET_VALUE (symbolP, (valueT) exp.X_add_number);    }  else    {      as_bad ("Symbol %s already defined", name);    }  *p = c;  demand_empty_rest_of_line ();}				/* s_lsym() *//* Read a line into an sb.  */static intget_line_sb (line)     sb *line;{  if (input_line_pointer >= buffer_limit)    {      buffer_limit = input_scrub_next_buffer (&input_line_pointer);      if (buffer_limit == 0)	return 0;    }  while (! is_end_of_line[(unsigned char) *input_line_pointer])    sb_add_char (line, *input_line_pointer++);  while (input_line_pointer < buffer_limit	 && is_end_of_line[(unsigned char) *input_line_pointer])    {      if (*input_line_pointer == '\n')	{	  bump_line_counters ();	  LISTING_NEWLINE ();	}      ++input_line_pointer;    }  return 1;}/* Define a macro.  This is an interface to macro.c, which is shared   between gas and gasp.  */voids_macro (ignore)     int ignore;{  char *file;  unsigned int line;  sb s;  sb label;  const char *err;  as_where (&file, &line);  sb_new (&s);  while (! is_end_of_line[(unsigned char) *input_line_pointer])    sb_add_char (&s, *input_line_pointer++);  sb_new (&label);  if (line_label != NULL)    sb_add_string (&label, S_GET_NAME (line_label));  demand_empty_rest_of_line ();  err = define_macro (0, &s, &label, get_line_sb);  if (err != NULL)    as_bad_where (file, line, "%s", err);  else    {      if (line_label != NULL)	{	  S_SET_SEGMENT (line_label, undefined_section);	  S_SET_VALUE (line_label, 0);	  line_label->sy_frag = &zero_address_frag;	}    }  sb_kill (&s);}/* Handle the .mexit pseudo-op, which immediately exits a macro   expansion.  */voids_mexit (ignore)     int ignore;{  buffer_limit = input_scrub_next_buffer (&input_line_pointer);}/* Handle changing the location counter.  */static voiddo_org (segment, exp, fill)     segT segment;     expressionS *exp;     int fill;{  if (segment != now_seg && segment != absolute_section)    as_bad ("invalid segment \"%s\"; segment \"%s\" assumed",	    segment_name (segment), segment_name (now_seg));  if (now_seg == absolute_section)    {      if (fill != 0)	as_warn ("ignoring fill value in absolute section");      if (exp->X_op != O_constant)	{	  as_bad ("only constant offsets supported in absolute section");	  exp->X_add_number = 0;	}      abs_section_offset = exp->X_add_number;    }  else    {      char *p;      p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp->X_add_symbol,		    exp->X_add_number, (char *) NULL);      *p = fill;    }}void s_org (ignore)     int ignore;{  register segT segment;  expressionS exp;  register long temp_fill;#ifdef TC_M68K  /* The m68k MRI assembler has a different meaning for .org.  It     means to create an absolute section at a given address.  We can't     support that--use a linker script instead.  */  if (flag_mri)    {      as_bad ("MRI style ORG pseudo-op not supported");      ignore_rest_of_line ();      return;    }#endif  /* Don't believe the documentation of BSD 4.2 AS.  There is no such     thing as a sub-segment-relative origin.  Any absolute origin is     given a warning, then assumed to be segment-relative.  Any     segmented origin expression ("foo+42") had better be in the right     segment or the .org is ignored.     BSD 4.2 AS warns if you try to .org backwards. We cannot because     we never know sub-segment sizes when we are reading code.  BSD     will crash trying to emit negative numbers of filler bytes in     certain .orgs. We don't crash, but see as-write for that code.     Don't make frag if need_pass_2==1.  */  segment = get_known_segmented_expression (&exp);  if (*input_line_pointer == ',')    {      input_line_pointer++;      temp_fill = get_absolute_expression ();    }  else    temp_fill = 0;  if (!need_pass_2)    do_org (segment, &exp, temp_fill);  demand_empty_rest_of_line ();}				/* s_org() *//* Handle parsing for the MRI SECT/SECTION pseudo-op.  This should be   called by the obj-format routine which handles section changing   when in MRI mode.  It will create a new section, and return it.  It   will set *TYPE to the section type: one of '\0' (unspecified), 'C'   (code), 'D' (data), 'M' (mixed), or 'R' (romable).  If   BFD_ASSEMBLER is defined, the flags will be set in the section.  */voids_mri_sect (type)     char *type;{#ifdef TC_M68K  char *name;  char c;  segT seg;  SKIP_WHITESPACE ();    name = input_line_pointer;  if (! isdigit ((unsigned char) *name))    c = get_symbol_end ();  else    {      do	{	  ++input_line_pointer;	}      while (isdigit ((unsigned char) *input_line_pointer));      c = *input_line_pointer;      *input_line_pointer = '\0';    }  name = strdup (name);  if (name == NULL)    as_fatal ("virtual memory exhausted");  *input_line_pointer = c;  seg = subseg_new (name, 0);  if (*input_line_pointer == ',')    {      int align;      ++input_line_pointer;      align = get_absolute_expression ();      record_alignment (seg, align);    }  *type = '\0';  if (*input_line_pointer == ',')    {      c = *++input_line_pointer;      c = toupper ((unsigned char) c);      if (c == 'C' || c == 'D' || c == 'M' || c == 'R')	*type = c;      else	as_bad ("unrecognized section type");      ++input_line_pointer;#ifdef BFD_ASSEMBLER      {	flagword flags;	flags = SEC_NO_FLAGS;	if (*type == 'C')	  flags = SEC_CODE;	else if (*type == 'D')	  flags = SEC_DATA;	else if (*type == 'R')	  flags = SEC_ROM;	if (flags != SEC_NO_FLAGS)	  {	    if (! bfd_set_section_flags (stdoutput, seg, flags))	      as_warn ("error setting flags for \"%s\": %s",		       bfd_section_name (stdoutput, seg),		       bfd_errmsg (bfd_get_error ()));	  }      }#endif    }  /* Ignore the HP type.  */  if (*input_line_pointer == ',')    input_line_pointer += 2;  demand_empty_rest_of_line ();#else /* ! TC_M68K */#ifdef TC_I960  char *name;  char c;  segT seg;  SKIP_WHITESPACE ();  name = input_line_pointer;  c = get_symbol_end ();  name = strdup (name);  if (name == NULL)    as_fatal ("virtual memory exhausted");  *input_line_pointer = c;  seg = subseg_new (name, 0);  if (*input_line_pointer != ',')    *type = 'C';  else    {      char *sectype;      ++input_line_pointer;      SKIP_WHITESPACE ();      sectype = input_line_pointer;      c = get_symbol_end ();      if (*sectype == '\0')	*type = 'C';      else if (strcasecmp (sectype, "text") == 0)	*type = 'C';      else if (strcasecmp (sectype, "data") == 0)	*type = 'D';      else if (strcasecmp (sectype, "romdata") == 0)	*type = 'R';      else	as_warn ("unrecognized section type `%s'", sectype);      *input_line_pointer = c;    }  if (*input_line_pointer == ',')    {      char *seccmd;      ++input_line_pointer;      SKIP_WHITESPACE ();      seccmd = input_line_pointer;      c = get_symbol_end ();      if (strcasecmp (seccmd, "absolute") == 0)	{	  as_bad ("absolute sections are not supported");	  *input_line_pointer = c;	  ignore_rest_of_line ();	  return;	}      else if (strcasecmp (seccmd, "align") == 0)	{	  int align;	  *input_line_pointer = c;	  align = get_absolute_expression ();	  record_alignment (seg, align);	}      else	{	  as_warn ("unrecognized section command `%s'", seccmd);	  *input_line_pointer = c;	}    }  demand_empty_rest_of_line ();	  #else /* ! TC_I960 */  /* The MRI assembler seems to use different forms of .sect for     different targets.  */  abort ();#endif /* ! TC_I960 */#endif /* ! TC_M68K */}/* Handle the .print pseudo-op.  */voids_print (ignore)     int ignore;{  char *s;  int len;  s = demand_copy_C_string (&len);  printf ("%s\n", s);  demand_empty_rest_of_line ();}/* Handle the .purgem pseudo-op.  */voids_purgem (ignore)     int ignore;{  if (is_it_end_of_statement ())    {      demand_empty_rest_of_line ();      return;    }  do    {      char *name;      char c;      SKIP_WHITESPACE ();      name = input_line_pointer;      c = get_symbol_end ();      delete_macro (name);      *input_line_pointer = c;      SKIP_WHITESPACE ();    }  while (*input_line_pointer++ == ',');  --input_line_pointer;  demand_empty_rest_of_line ();}/* Handle the .rept pseudo-op.  */voids_rept (ignore)     int ignore;{  int count;  sb one;  sb many;  count = get_absolute_expression ();  sb_new (&one);  if (! buffer_and_nest ("REPT", "ENDR", &one, get_line_sb))    {      as_bad ("rept without endr");      return;    }  sb_new (&many);  while (count-- > 0)    sb_add_sb (&many, &one);  sb_kill (&one);  input_scrub_include_sb (&many, input_line_pointer);  sb_kill (&many);  buffer_limit = input_scrub_next_buffer (&input_line_pointer);}void s_set (ignore)     int ignore;{  register char *name;  register char delim;  register char *end_name;  register symbolS *symbolP;  /*   * Especial apologies for the random logic:   * this just grew, and could be parsed much more simply!   * Dean in haste.   */  name = input_line_pointer;  delim = get_symbol_end ();  end_name = input_line_pointer;  *end_name = delim;  SKIP_WHITESPACE ();  if (*input_line_pointer != ',')    {      *end_name = 0;      as_bad ("Expected comma after name \"%s\"", name);      *end_name = delim;      ignore_rest_of_line ();      return;    }  input_line_pointer++;  *end_name = 0;  if (name[0] == '.' && name[1] == '\0')    {      /* Turn '. = mumble' into a .org mumble */      register segT segment;      expressionS exp;      segment = get_known_segmented_expression (&exp);      if (!need_pass_2)	do_org (segment, &exp, 0);      *end_name = delim;      return;    }  if ((symbolP = symbol_find (name)) == NULL      && (symbolP = md_undefined_symbol (name)) == NULL)    {      symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag);#ifdef OBJ_COFF      /* "set" symbols are local unless otherwise specified. */      SF_SET_LOCAL (symbolP);#endif /* OBJ_COFF */    }				/* make a new symbol */  symbol_table_insert (symbolP);  *end_name = delim;  pseudo_set (symbolP);  demand_empty_rest_of_line ();}				/* s_set() */void s_space (mult)     int mult;{  expressionS exp;  long temp_fill;  char *p = 0;  char *stop = NULL;  char stopc;#ifdef md_flush_pending_output  md_flush_pending_output ();#endif  if (flag_mri)    stop = mri_comment_field (&stopc);  /* Just like .fill, but temp_size = 1 */  expression (&exp);  if (exp.X_op == O_constant)    {      long repeat;      repeat = exp.X_add_number;      if (mult)	repeat *= mult;      if (repeat <= 0)	{	  if (! flag_mri || repeat < 0)	    as_warn (".space repeat count is %s, ignored",		     repeat ? "negative" : "zero");	  goto getout;	}      /* If we are in the absolute section, just bump the offset.  */      if (now_seg == absolute_section)	{	  abs_section_offset += repeat;	  goto getout;	}      /* If we are secretly in an MRI common section, then creating         space just increases the size of the common symbol.  */      if (mri_common_symbol != NULL)	{	  S_SET_VALUE (mri_common_symbol,		       S_GET_VALUE (mri_common_symbol) + repeat);	  goto getout;	}      if (!need_pass_2)	p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0,		      repeat, (char *) 0);    }  else    {      if (now_seg == absolute_section)	{	  as_bad ("space allocation too complex in absolute section");	  subseg_set (text_section, 0);	}      if (mri_common_symbol != NULL)	{	  as_bad ("space allocation too complex in common section");	  mri_common_symbol = NULL;	}      if (!need_pass_2)	p = frag_var (rs_space, 1, 1, (relax_substateT) 0,		      make_expr_symbol (&exp), 0L, (char *) 0);    }  SKIP_WHITESPACE ();  if (*input_line_pointer == ',')    {      input_line_pointer++;      temp_fill = get_absolute_expression ();    }  else    {      temp_fill = 0;    }  if (p)    {      *p = temp_fill;    } getout:  if (flag_mri)    mri_comment_end (stop, stopc);  demand_empty_rest_of_line ();}/* This is like s_space, but the value is a floating point number with   the given precision.  This is for the MRI dcb.s pseudo-op and   friends.  */voids_float_space (float_type)     int float_type;{  offsetT count;  int flen;  char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];  char *stop = NULL;  char stopc;  if (flag_mri)    stop = mri_comment_field (&stopc);  count = get_absolute_expression ();  SKIP_WHITESPACE ();  if (*input_line_pointer != ',')    {      as_bad ("missing value");      if (flag_mri)	mri_comment_end (stop, stopc);      ignore_rest_of_line ();      return;    }  ++input_line_pointer;  SKIP_WHITESPACE ();  /* Skip any 0{letter} that may be present.  Don't even check if the   * letter is legal.  */  if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1]))    input_line_pointer += 2;  /* Accept :xxxx, where the x's are hex digits, for a floating point     with the exact digits specified.  */  if (input_line_pointer[0] == ':')    {      flen = hex_float (float_type, temp);      if (flen < 0)	{	  if (flag_mri)	    mri_comment_end (stop, stopc);	  ignore_rest_of_line ();	  return;	}    }  else    {      char *err;      err = md_atof (float_type, temp, &flen);      know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);      know (flen > 0);      if (err)	{	  as_bad ("Bad floating literal: %s", err);	  if (flag_mri)	    mri_comment_end (stop, stopc);	  ignore_rest_of_line ();	  return;	}    }  while (--count >= 0)    {      char *p;      p = frag_more (flen);      memcpy (p, temp, (unsigned int) flen);    }  if (flag_mri)    mri_comment_end (stop, stopc);  demand_empty_rest_of_line ();}/* Handle the .struct pseudo-op, as found in MIPS assemblers.  */voids_struct (ignore)     int ignore;{  char *stop = NULL;  char stopc;  if (flag_mri)    stop = mri_comment_field (&stopc);  abs_section_offset = get_absolute_expression ();  subseg_set (absolute_section, 0);  if (flag_mri)    mri_comment_end (stop, stopc);  demand_empty_rest_of_line ();}voids_text (ignore)     int ignore;{  register int temp;  temp = get_absolute_expression ();  subseg_set (text_section, (subsegT) temp);  demand_empty_rest_of_line ();#ifdef OBJ_VMS  const_flag &= ~IN_DEFAULT_SECTION;#endif}				/* s_text() */void demand_empty_rest_of_line (){  SKIP_WHITESPACE ();  if (is_end_of_line[(unsigned char) *input_line_pointer])    {      input_line_pointer++;    }  else    {      ignore_rest_of_line ();    }  /* Return having already swallowed end-of-line. */}				/* Return pointing just after end-of-line. */voidignore_rest_of_line ()		/* For suspect lines: gives warning. */{  if (!is_end_of_line[(unsigned char) *input_line_pointer])    {      if (isprint (*input_line_pointer))	as_bad ("Rest of line ignored. First ignored character is `%c'.",		*input_line_pointer);      else	as_bad ("Rest of line ignored. First ignored character valued 0x%x.",		*input_line_pointer);      while (input_line_pointer < buffer_limit	     && !is_end_of_line[(unsigned char) *input_line_pointer])	{	  input_line_pointer++;	}    }  input_line_pointer++;		/* Return pointing just after end-of-line. */  know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);}/* *			pseudo_set() * * In:	Pointer to a symbol. *	Input_line_pointer->expression. * * Out:	Input_line_pointer->just after any whitespace after expression. *	Tried to set symbol to value of expression. *	Will change symbols type, value, and frag; */voidpseudo_set (symbolP)     symbolS *symbolP;{  expressionS exp;#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)  int ext;#endif /* OBJ_AOUT or OBJ_BOUT */  know (symbolP);		/* NULL pointer is logic error. */#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)  ext = S_IS_EXTERNAL (symbolP);#endif /* OBJ_AOUT or OBJ_BOUT */  (void) expression (&exp);  if (exp.X_op == O_illegal)    as_bad ("illegal expression; zero assumed");  else if (exp.X_op == O_absent)    as_bad ("missing expression; zero assumed");  else if (exp.X_op == O_big)    as_bad ("%s number invalid; zero assumed",	    exp.X_add_number > 0 ? "bignum" : "floating point");  else if (exp.X_op == O_subtract	   && (S_GET_SEGMENT (exp.X_add_symbol)	       == S_GET_SEGMENT (exp.X_op_symbol))	   && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol))	   && exp.X_add_symbol->sy_frag == exp.X_op_symbol->sy_frag)    {      exp.X_op = O_constant;      exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol)			  - S_GET_VALUE (exp.X_op_symbol));    }  switch (exp.X_op)    {    case O_illegal:    case O_absent:    case O_big:      exp.X_add_number = 0;      /* Fall through.  */    case O_constant:      S_SET_SEGMENT (symbolP, absolute_section);#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)      if (ext)	S_SET_EXTERNAL (symbolP);      else	S_CLEAR_EXTERNAL (symbolP);#endif /* OBJ_AOUT or OBJ_BOUT */      S_SET_VALUE (symbolP, (valueT) exp.X_add_number);      symbolP->sy_frag = &zero_address_frag;      break;    case O_register:      S_SET_SEGMENT (symbolP, reg_section);      S_SET_VALUE (symbolP, (valueT) exp.X_add_number);      symbolP->sy_frag = &zero_address_frag;      break;    case O_symbol:      if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section	  || exp.X_add_number != 0)	symbolP->sy_value = exp;      else	{	  symbolS *s = exp.X_add_symbol;	  S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s));#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)	  if (ext)	    S_SET_EXTERNAL (symbolP);	  else	    S_CLEAR_EXTERNAL (symbolP);#endif /* OBJ_AOUT or OBJ_BOUT */	  S_SET_VALUE (symbolP,		       exp.X_add_number + S_GET_VALUE (s));	  symbolP->sy_frag = s->sy_frag;	  copy_symbol_attributes (symbolP, s);	}      break;    default:      /* The value is some complex expression.	 FIXME: Should we set the segment to anything?  */      symbolP->sy_value = exp;      break;    }}/* *			cons() * * CONStruct more frag of .bytes, or .words etc. * Should need_pass_2 be 1 then emit no frag(s). * This understands EXPRESSIONS. * * Bug (?) * * This has a split personality. We use expression() to read the * value. We can detect if the value won't fit in a byte or word. * But we can't detect if expression() discarded significant digits * in the case of a long. Not worth the crocks required to fix it. *//* Select a parser for cons expressions.  *//* Some targets need to parse the expression in various fancy ways.   You can define TC_PARSE_CONS_EXPRESSION to do whatever you like   (for example, the HPPA does this).  Otherwise, you can define   BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or   REPEAT_CONS_EXPRESSIONS to permit repeat counts.  If none of these   are defined, which is the normal case, then only simple expressions   are permitted.  */static voidparse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes));#ifndef TC_PARSE_CONS_EXPRESSION#ifdef BITFIELD_CONS_EXPRESSIONS#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES)static void parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes));#endif#ifdef REPEAT_CONS_EXPRESSIONS#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES)static voidparse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes));#endif/* If we haven't gotten one yet, just call expression.  */#ifndef TC_PARSE_CONS_EXPRESSION#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP)#endif#endif/* worker to do .byte etc statements *//* clobbers input_line_pointer, checks *//* end-of-line. */static void cons_worker (nbytes, rva)     register int nbytes;	/* 1=.byte, 2=.word, 4=.long */     int rva;{  int c;  expressionS exp;  char *stop = NULL;  char stopc;#ifdef md_flush_pending_output  md_flush_pending_output ();#endif  if (flag_mri)    stop = mri_comment_field (&stopc);  if (is_it_end_of_statement ())    {      mri_comment_end (stop, stopc);      demand_empty_rest_of_line ();      return;    }  c = 0;  do    {      if (flag_mri)	parse_mri_cons (&exp, (unsigned int) nbytes);      else	TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes);      if (rva)	{	  if (exp.X_op == O_symbol)	    exp.X_op = O_symbol_rva;	  else	    as_fatal ("rva without symbol");	}      emit_expr (&exp, (unsigned int) nbytes);      ++c;    }  while (*input_line_pointer++ == ',');  /* In MRI mode, after an odd number of bytes, we must align to an     even word boundary, unless the next instruction is a dc.b, ds.b     or dcb.b.  */  if (flag_mri && nbytes == 1 && (c & 1) != 0)    mri_pending_align = 1;  input_line_pointer--;		/* Put terminator back into stream. */  if (flag_mri)    mri_comment_end (stop, stopc);  demand_empty_rest_of_line ();}voidcons (size)     int size;{  cons_worker (size, 0);}void s_rva (size)     int size;{  cons_worker (size, 1);}/* Put the contents of expression EXP into the object file using   NBYTES bytes.  If need_pass_2 is 1, this does nothing.  */voidemit_expr (exp, nbytes)     expressionS *exp;     unsigned int nbytes;{  operatorT op;  register char *p;  valueT extra_digit = 0;  /* Don't do anything if we are going to make another pass.  */  if (need_pass_2)    return;  op = exp->X_op;  /* Allow `.word 0' in the absolute section.  */  if (now_seg == absolute_section)    {      if (op != O_constant || exp->X_add_number != 0)	as_bad ("attempt to store value in absolute section");      abs_section_offset += nbytes;      return;    }  /* Handle a negative bignum.  */  if (op == O_uminus      && exp->X_add_number == 0      && exp->X_add_symbol->sy_value.X_op == O_big      && exp->X_add_symbol->sy_value.X_add_number > 0)    {      int i;      unsigned long carry;      exp = &exp->X_add_symbol->sy_value;      /* Negate the bignum: one's complement each digit and add 1.  */      carry = 1;      for (i = 0; i < exp->X_add_number; i++)	{	  unsigned long next;	  next = (((~ (generic_bignum[i] & LITTLENUM_MASK))		   & LITTLENUM_MASK)		  + carry);	  generic_bignum[i] = next & LITTLENUM_MASK;	  carry = next >> LITTLENUM_NUMBER_OF_BITS;	}      /* We can ignore any carry out, because it will be handled by	 extra_digit if it is needed.  */      extra_digit = (valueT) -1;      op = O_big;    }  if (op == O_absent || op == O_illegal)    {      as_warn ("zero assumed for missing expression");      exp->X_add_number = 0;      op = O_constant;    }  else if (op == O_big && exp->X_add_number <= 0)    {      as_bad ("floating point number invalid; zero assumed");      exp->X_add_number = 0;      op = O_constant;    }  else if (op == O_register)    {      as_warn ("register value used as expression");      op = O_constant;    }  p = frag_more ((int) nbytes);#ifndef WORKING_DOT_WORD  /* If we have the difference of two symbols in a word, save it on     the broken_words list.  See the code in write.c.  */  if (op == O_subtract && nbytes == 2)    {      struct broken_word *x;      x = (struct broken_word *) xmalloc (sizeof (struct broken_word));      x->next_broken_word = broken_words;      broken_words = x;      x->frag = frag_now;      x->word_goes_here = p;      x->dispfrag = 0;      x->add = exp->X_add_symbol;      x->sub = exp->X_op_symbol;      x->addnum = exp->X_add_number;      x->added = 0;      new_broken_words++;      return;    }#endif  /* If we have an integer, but the number of bytes is too large to     pass to md_number_to_chars, handle it as a bignum.  */  if (op == O_constant && nbytes > sizeof (valueT))    {      valueT val;      int gencnt;      if (! exp->X_unsigned && exp->X_add_number < 0)	extra_digit = (valueT) -1;      val = (valueT) exp->X_add_number;      gencnt = 0;      do	{	  generic_bignum[gencnt] = val & LITTLENUM_MASK;	  val >>= LITTLENUM_NUMBER_OF_BITS;	  ++gencnt;	}      while (val != 0);      op = exp->X_op = O_big;      exp->X_add_number = gencnt;    }  if (op == O_constant)    {      register valueT get;      register valueT use;      register valueT mask;      register valueT unmask;      /* JF << of >= number of bits in the object is undefined.  In	 particular SPARC (Sun 4) has problems */      if (nbytes >= sizeof (valueT))	mask = 0;      else	mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes);	/* Don't store these bits. */      unmask = ~mask;		/* Do store these bits. */#ifdef NEVER      "Do this mod if you want every overflow check to assume SIGNED 2's complement data.";      mask = ~(unmask >> 1);	/* Includes sign bit now. */#endif      get = exp->X_add_number;      use = get & unmask;      if ((get & mask) != 0 && (get & mask) != mask)	{		/* Leading bits contain both 0s & 1s. */	  as_warn ("Value 0x%lx truncated to 0x%lx.", get, use);	}      /* put bytes in right order. */      md_number_to_chars (p, use, (int) nbytes);    }  else if (op == O_big)    {      int size;      LITTLENUM_TYPE *nums;      know (nbytes % CHARS_PER_LITTLENUM == 0);      size = exp->X_add_number * CHARS_PER_LITTLENUM;      if (nbytes < size)	{	  as_warn ("Bignum truncated to %d bytes", nbytes);	  size = nbytes;	}      if (target_big_endian)	{	  while (nbytes > size)	    {	      md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM);	      nbytes -= CHARS_PER_LITTLENUM;	      p += CHARS_PER_LITTLENUM;	    }	  nums = generic_bignum + size / CHARS_PER_LITTLENUM;	  while (size > 0)	    {	      --nums;	      md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM);	      size -= CHARS_PER_LITTLENUM;	      p += CHARS_PER_LITTLENUM;	    }	}      else	{	  nums = generic_bignum;	  while (size > 0)	    {	      md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM);	      ++nums;	      size -= CHARS_PER_LITTLENUM;	      p += CHARS_PER_LITTLENUM;	      nbytes -= CHARS_PER_LITTLENUM;	    }	  while (nbytes > 0)	    {	      md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM);	      nbytes -= CHARS_PER_LITTLENUM;	      p += CHARS_PER_LITTLENUM;	    }	}    }  else    {      memset (p, 0, nbytes);      /* Now we need to generate a fixS to record the symbol value.	 This is easy for BFD.  For other targets it can be more	 complex.  For very complex cases (currently, the HPPA and	 NS32K), you can define TC_CONS_FIX_NEW to do whatever you	 want.  For simpler cases, you can define TC_CONS_RELOC to be	 the name of the reloc code that should be stored in the fixS.	 If neither is defined, the code uses NO_RELOC if it is	 defined, and otherwise uses 0.  */#ifdef BFD_ASSEMBLER#ifdef TC_CONS_FIX_NEW      TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp);#else      fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0,		   /* @@ Should look at CPU word size.  */		   nbytes == 2 ? BFD_RELOC_16		      : nbytes == 8 ? BFD_RELOC_64		      : BFD_RELOC_32);#endif#else#ifdef TC_CONS_FIX_NEW      TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp);#else      /* Figure out which reloc number to use.  Use TC_CONS_RELOC if	 it is defined, otherwise use NO_RELOC if it is defined,	 otherwise use 0.  */#ifndef TC_CONS_RELOC#ifdef NO_RELOC#define TC_CONS_RELOC NO_RELOC#else#define TC_CONS_RELOC 0#endif#endif      fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0,		   TC_CONS_RELOC);#endif /* TC_CONS_FIX_NEW */#endif /* BFD_ASSEMBLER */    }}#ifdef BITFIELD_CONS_EXPRESSIONS/* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as   w:x,y:z, where w and y are bitwidths and x and y are values.  They   then pack them all together. We do a little better in that we allow   them in words, longs, etc. and we'll pack them in target byte order   for you.   The rules are: pack least significat bit first, if a field doesn't   entirely fit, put it in the next unit.  Overflowing the bitfield is   explicitly *not* even a warning.  The bitwidth should be considered   a "mask".   To use this function the tc-XXX.h file should define   BITFIELD_CONS_EXPRESSIONS.  */static void parse_bitfield_cons (exp, nbytes)     expressionS *exp;     unsigned int nbytes;{  unsigned int bits_available = BITS_PER_CHAR * nbytes;  char *hold = input_line_pointer;  (void) expression (exp);  if (*input_line_pointer == ':')    {			/* bitfields */      long value = 0;      for (;;)	{	  unsigned long width;	  if (*input_line_pointer != ':')	    {	      input_line_pointer = hold;	      break;	    }			/* next piece is not a bitfield */	  /* In the general case, we can't allow	     full expressions with symbol	     differences and such.  The relocation	     entries for symbols not defined in this	     assembly would require arbitrary field	     widths, positions, and masks which most	     of our current object formats don't	     support.	     In the specific case where a symbol	     *is* defined in this assembly, we	     *could* build fixups and track it, but	     this could lead to confusion for the	     backends.  I'm lazy. I'll take any	     SEG_ABSOLUTE. I think that means that	     you can use a previous .set or	     .equ type symbol.  xoxorich. */	  if (exp->X_op == O_absent)	    {	      as_warn ("using a bit field width of zero");	      exp->X_add_number = 0;	      exp->X_op = O_constant;	    }			/* implied zero width bitfield */	  if (exp->X_op != O_constant)	    {	      *input_line_pointer = '\0';	      as_bad ("field width \"%s\" too complex for a bitfield", hold);	      *input_line_pointer = ':';	      demand_empty_rest_of_line ();	      return;	    }			/* too complex */	  if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes))	    {	      as_warn ("field width %lu too big to fit in %d bytes: truncated to %d bits",		       width, nbytes, (BITS_PER_CHAR * nbytes));	      width = BITS_PER_CHAR * nbytes;	    }			/* too big */	  if (width > bits_available)	    {	      /* FIXME-SOMEDAY: backing up and reparsing is wasteful.  */	      input_line_pointer = hold;	      exp->X_add_number = value;	      break;	    }			/* won't fit */	  hold = ++input_line_pointer; /* skip ':' */	  (void) expression (exp);	  if (exp->X_op != O_constant)	    {	      char cache = *input_line_pointer;	      *input_line_pointer = '\0';	      as_bad ("field value \"%s\" too complex for a bitfield", hold);	      *input_line_pointer = cache;	      demand_empty_rest_of_line ();	      return;	    }			/* too complex */	  value |= ((~(-1 << width) & exp->X_add_number)		    << ((BITS_PER_CHAR * nbytes) - bits_available));	  if ((bits_available -= width) == 0	      || is_it_end_of_statement ()	      || *input_line_pointer != ',')	    {	      break;	    }			/* all the bitfields we're gonna get */	  hold = ++input_line_pointer;	  (void) expression (exp);	}			/* forever loop */      exp->X_add_number = value;      exp->X_op = O_constant;      exp->X_unsigned = 1;    }				/* if looks like a bitfield */}				/* parse_bitfield_cons() */#endif /* BITFIELD_CONS_EXPRESSIONS *//* Handle an MRI style string expression.  */static voidparse_mri_cons (exp, nbytes)     expressionS *exp;     unsigned int nbytes;{  if (*input_line_pointer != '\''      && (input_line_pointer[1] != '\''	  || (*input_line_pointer != 'A'	      && *input_line_pointer != 'E')))    TC_PARSE_CONS_EXPRESSION (exp, nbytes);  else    {      int scan = 0;      unsigned int result = 0;      /* An MRI style string.  Cut into as many bytes as will fit into	 a nbyte chunk, left justify if necessary, and separate with	 commas so we can try again later.  */      if (*input_line_pointer == 'A')	++input_line_pointer;      else if (*input_line_pointer == 'E')	{	  as_bad ("EBCDIC constants are not supported");	  ++input_line_pointer;	}      input_line_pointer++;      for (scan = 0; scan < nbytes; scan++)	{	  if (*input_line_pointer == '\'')	    {	      if (input_line_pointer[1] == '\'')		{		  input_line_pointer++;		}	      else		break;	    }	  result = (result << 8) | (*input_line_pointer++);	}      /* Left justify */      while (scan < nbytes)	{	  result <<= 8;	  scan++;	}      /* Create correct expression */      exp->X_op = O_constant;      exp->X_add_number = result;      /* Fake it so that we can read the next char too */      if (input_line_pointer[0] != '\'' ||	  (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\''))	{	  input_line_pointer -= 2;	  input_line_pointer[0] = ',';	  input_line_pointer[1] = '\'';	}      else	input_line_pointer++;    }}#ifdef REPEAT_CONS_EXPRESSIONS/* Parse a repeat expression for cons.  This is used by the MIPS   assembler.  The format is NUMBER:COUNT; NUMBER appears in the   object file COUNT times.   To use this for a target, define REPEAT_CONS_EXPRESSIONS.  */static voidparse_repeat_cons (exp, nbytes)     expressionS *exp;     unsigned int nbytes;{  expressionS count;  register int i;  expression (exp);  if (*input_line_pointer != ':')    {      /* No repeat count.  */      return;    }  ++input_line_pointer;  expression (&count);  if (count.X_op != O_constant      || count.X_add_number <= 0)    {      as_warn ("Unresolvable or nonpositive repeat count; using 1");      return;    }  /* The cons function is going to output this expression once.  So we     output it count - 1 times.  */  for (i = count.X_add_number - 1; i > 0; i--)    emit_expr (exp, nbytes);}#endif /* REPEAT_CONS_EXPRESSIONS *//* Parse a floating point number represented as a hex constant.  This   permits users to specify the exact bits they want in the floating   point number.  */static inthex_float (float_type, bytes)     int float_type;     char *bytes;{  int length;  int i;  switch (float_type)    {    case 'f':    case 'F':    case 's':    case 'S':      length = 4;      break;    case 'd':    case 'D':    case 'r':    case 'R':      length = 8;      break;    case 'x':    case 'X':      length = 12;      break;    case 'p':    case 'P':      length = 12;      break;    default:      as_bad ("Unknown floating type type '%c'", float_type);      return -1;    }  /* It would be nice if we could go through expression to parse the     hex constant, but if we get a bignum it's a pain to sort it into     the buffer correctly.  */  i = 0;  while (hex_p (*input_line_pointer) || *input_line_pointer == '_')    {      int d;      /* The MRI assembler accepts arbitrary underscores strewn about	 through the hex constant, so we ignore them as well. */      if (*input_line_pointer == '_')	{	  ++input_line_pointer;	  continue;	}      if (i >= length)	{	  as_warn ("Floating point constant too large");	  return -1;	}      d = hex_value (*input_line_pointer) << 4;      ++input_line_pointer;      while (*input_line_pointer == '_')	++input_line_pointer;      if (hex_p (*input_line_pointer))	{	  d += hex_value (*input_line_pointer);	  ++input_line_pointer;	}      if (target_big_endian)	bytes[i] = d;      else	bytes[length - i - 1] = d;      ++i;    }  if (i < length)    {      if (target_big_endian)	memset (bytes + i, 0, length - i);      else	memset (bytes, 0, length - i);    }  return length;}/* *			float_cons() * * CONStruct some more frag chars of .floats .ffloats etc. * Makes 0 or more new frags. * If need_pass_2 == 1, no frags are emitted. * This understands only floating literals, not expressions. Sorry. * * A floating constant is defined by atof_generic(), except it is preceded * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its * reading, I decided to be incompatible. This always tries to give you * rounded bits to the precision of the pseudo-op. Former AS did premature * truncatation, restored noisy bits instead of trailing 0s AND gave you * a choice of 2 flavours of noise according to which of 2 floating-point * scanners you directed AS to use. * * In:	input_line_pointer->whitespace before, or '0' of flonum. * */voidfloat_cons (float_type)     /* Clobbers input_line-pointer, checks end-of-line. */     register int float_type;	/* 'f':.ffloat ... 'F':.float ... */{  register char *p;  int length;			/* Number of chars in an object. */  register char *err;		/* Error from scanning floating literal. */  char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];  if (is_it_end_of_statement ())    {      demand_empty_rest_of_line ();      return;    }  do    {      /* input_line_pointer->1st char of a flonum (we hope!). */      SKIP_WHITESPACE ();      /* Skip any 0{letter} that may be present. Don't even check if the       * letter is legal. Someone may invent a "z" format and this routine       * has no use for such information. Lusers beware: you get       * diagnostics if your input is ill-conditioned.       */      if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1]))	input_line_pointer += 2;      /* Accept :xxxx, where the x's are hex digits, for a floating         point with the exact digits specified.  */      if (input_line_pointer[0] == ':')	{	  ++input_line_pointer;	  length = hex_float (float_type, temp);	  if (length < 0)	    {	      ignore_rest_of_line ();	      return;	    }	}      else	{	  err = md_atof (float_type, temp, &length);	  know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);	  know (length > 0);	  if (err)	    {	      as_bad ("Bad floating literal: %s", err);	      ignore_rest_of_line ();	      return;	    }	}      if (!need_pass_2)	{	  int count;	  count = 1;#ifdef REPEAT_CONS_EXPRESSIONS	  if (*input_line_pointer == ':')	    {	      expressionS count_exp;	      ++input_line_pointer;	      expression (&count_exp);	      if (count_exp.X_op != O_constant		  || count_exp.X_add_number <= 0)		{		  as_warn ("unresolvable or nonpositive repeat count; using 1");		}	      else		count = count_exp.X_add_number;	    }#endif	  while (--count >= 0)	    {	      p = frag_more (length);	      memcpy (p, temp, (unsigned int) length);	    }	}      SKIP_WHITESPACE ();    }  while (*input_line_pointer++ == ',');  --input_line_pointer;		/* Put terminator back into stream.  */  demand_empty_rest_of_line ();}				/* float_cons() *//* *			stringer() * * We read 0 or more ',' seperated, double-quoted strings. * * Caller should have checked need_pass_2 is FALSE because we don't check it. */void stringer (append_zero)		/* Worker to do .ascii etc statements. */     /* Checks end-of-line. */     register int append_zero;	/* 0: don't append '\0', else 1 */{  register unsigned int c;#ifdef md_flush_pending_output  md_flush_pending_output ();#endif  /*   * The following awkward logic is to parse ZERO or more strings,   * comma seperated. Recall a string expression includes spaces   * before the opening '\"' and spaces after the closing '\"'.   * We fake a leading ',' if there is (supposed to be)   * a 1st, expression. We keep demanding expressions for each   * ','.   */  if (is_it_end_of_statement ())    {      c = 0;			/* Skip loop. */      ++input_line_pointer;	/* Compensate for end of loop. */    }  else    {      c = ',';			/* Do loop. */    }  while (c == ',' || c == '<' || c == '"')    {      SKIP_WHITESPACE ();      switch (*input_line_pointer)	{	case '\"':	  ++input_line_pointer;	/*->1st char of string. */	  while (is_a_char (c = next_char_of_string ()))	    {	      FRAG_APPEND_1_CHAR (c);	    }	  if (append_zero)	    {	      FRAG_APPEND_1_CHAR (0);	    }	  know (input_line_pointer[-1] == '\"');	  break;	case '<':	  input_line_pointer++;	  c = get_single_number ();	  FRAG_APPEND_1_CHAR (c);	  if (*input_line_pointer != '>')	    {	      as_bad ("Expected <nn>");	    }	  input_line_pointer++;	  break;	case ',':	  input_line_pointer++;	  break;	}      SKIP_WHITESPACE ();      c = *input_line_pointer;    }  demand_empty_rest_of_line ();}				/* stringer() *//* FIXME-SOMEDAY: I had trouble here on characters with the    high bits set.  We'll probably also have trouble with    multibyte chars, wide chars, etc.  Also be careful about    returning values bigger than 1 byte.  xoxorich. */unsigned int next_char_of_string (){  register unsigned int c;  c = *input_line_pointer++ & CHAR_MASK;  switch (c)    {    case '\"':      c = NOT_A_CHAR;      break;#ifndef NO_STRING_ESCAPES    case '\\':      switch (c = *input_line_pointer++)	{	case 'b':	  c = '\b';	  break;	case 'f':	  c = '\f';	  break;	case 'n':	  c = '\n';	  break;	case 'r':	  c = '\r';	  break;	case 't':	  c = '\t';	  break;	case 'v':	  c = '\013';	  break;	case '\\':	case '"':	  break;		/* As itself. */	case '0':	case '1':	case '2':	case '3':	case '4':	case '5':	case '6':	case '7':	case '8':	case '9':	  {	    long number;	    int i;	    for (i = 0, number = 0; isdigit (c) && i < 3; c = *input_line_pointer++, i++)	      {		number = number * 8 + c - '0';	      }	    c = number & 0xff;	  }	  --input_line_pointer;	  break;	case 'x':	case 'X':	  {	    long number;	    number = 0;	    c = *input_line_pointer++;	    while (isxdigit (c))	      {		if (isdigit (c))		  number = number * 16 + c - '0';		else if (isupper (c))		  number = number * 16 + c - 'A' + 10;		else		  number = number * 16 + c - 'a' + 10;		c = *input_line_pointer++;	      }	    c = number & 0xff;	    --input_line_pointer;	  }	  break;	case '\n':	  /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */	  as_warn ("Unterminated string: Newline inserted.");	  c = '\n';	  break;	default:#ifdef ONLY_STANDARD_ESCAPES	  as_bad ("Bad escaped character in string, '?' assumed");	  c = '?';#endif /* ONLY_STANDARD_ESCAPES */	  break;	}			/* switch on escaped char */      break;#endif /* ! defined (NO_STRING_ESCAPES) */    default:      break;    }				/* switch on char */  return (c);}				/* next_char_of_string() */static segTget_segmented_expression (expP)     register expressionS *expP;{  register segT retval;  retval = expression (expP);  if (expP->X_op == O_illegal      || expP->X_op == O_absent      || expP->X_op == O_big)    {      as_bad ("expected address expression; zero assumed");      expP->X_op = O_constant;      expP->X_add_number = 0;      retval = absolute_section;    }  return retval;}static segT get_known_segmented_expression (expP)     register expressionS *expP;{  register segT retval;  if ((retval = get_segmented_expression (expP)) == undefined_section)    {      /* There is no easy way to extract the undefined symbol from the	 expression.  */      if (expP->X_add_symbol != NULL	  && S_GET_SEGMENT (expP->X_add_symbol) != expr_section)	as_warn ("symbol \"%s\" undefined; zero assumed",		 S_GET_NAME (expP->X_add_symbol));      else	as_warn ("some symbol undefined; zero assumed");      retval = absolute_section;      expP->X_op = O_constant;      expP->X_add_number = 0;    }  know (retval == absolute_section || SEG_NORMAL (retval));  return (retval);}				/* get_known_segmented_expression() */offsetTget_absolute_expression (){  expressionS exp;  expression (&exp);  if (exp.X_op != O_constant)    {      if (exp.X_op != O_absent)	as_bad ("bad or irreducible absolute expression; zero assumed");      exp.X_add_number = 0;    }  return exp.X_add_number;}char				/* return terminator */get_absolute_expression_and_terminator (val_pointer)     long *val_pointer;		/* return value of expression */{  /* FIXME: val_pointer should probably be offsetT *.  */  *val_pointer = (long) get_absolute_expression ();  return (*input_line_pointer++);}/* *			demand_copy_C_string() * * Like demand_copy_string, but return NULL if the string contains any '\0's. * Give a warning if that happens. */char *demand_copy_C_string (len_pointer)     int *len_pointer;{  register char *s;  if ((s = demand_copy_string (len_pointer)) != 0)    {      register int len;      for (len = *len_pointer;	   len > 0;	   len--)	{	  if (*s == 0)	    {	      s = 0;	      len = 1;	      *len_pointer = 0;	      as_bad ("This string may not contain \'\\0\'");	    }	}    }  return (s);}/* *			demand_copy_string() * * Demand string, but return a safe (=private) copy of the string. * Return NULL if we can't read a string here. */char *demand_copy_string (lenP)     int *lenP;{  register unsigned int c;  register int len;  char *retval;  len = 0;  SKIP_WHITESPACE ();  if (*input_line_pointer == '\"')    {      input_line_pointer++;	/* Skip opening quote. */      while (is_a_char (c = next_char_of_string ()))	{	  obstack_1grow (&notes, c);	  len++;	}      /* JF this next line is so demand_copy_C_string will return a	 null terminated string. */      obstack_1grow (&notes, '\0');      retval = obstack_finish (&notes);    }  else    {      as_warn ("Missing string");      retval = NULL;      ignore_rest_of_line ();    }  *lenP = len;  return (retval);}				/* demand_copy_string() */