memset ((PTR) s, 0, sizeof (*s)); SYMBOL_NAME (s) = obsavestring (name, strlen (name), &current_objfile->symbol_obstack);
memset (s, 0, sizeof (*s));
new_symbol PARAMS ((char *));static struct type *new_type PARAMS ((char *));static struct block *new_block PARAMS ((int));static struct symtab *new_symtab PARAMS ((char *, int, int, struct objfile *));static struct linetable *new_linetable PARAMS ((int));static struct blockvector *new_bvect PARAMS ((int));static intparse_symbol PARAMS ((SYMR *, union aux_ext *, char *, int, struct section_offsets *));static struct type *parse_type PARAMS ((int, union aux_ext *, unsigned int, int *, int, char *));static struct symbol *mylookup_symbol PARAMS ((char *, struct block *, namespace_enum,			 enum address_class));static struct block *shrink_block PARAMS ((struct block *, struct symtab *));static PTRxzalloc PARAMS ((unsigned int));static voidsort_blocks PARAMS ((struct symtab *));static intcompare_blocks PARAMS ((const void *, const void *));static struct partial_symtab *new_psymtab PARAMS ((char *, struct objfile *, struct section_offsets *));static voidpsymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *));static voidadd_block PARAMS ((struct block *, struct symtab *));static voidadd_symbol PARAMS ((struct symbol *, struct block *));static intadd_line PARAMS ((struct linetable *, int, CORE_ADDR, int));static struct linetable *shrink_linetable PARAMS ((struct linetable *));static voidhandle_psymbol_enumerators PARAMS ((struct objfile *, FDR *, int, CORE_ADDR));static char *mdebug_next_symbol_text PARAMS ((struct objfile *));/* Address bounds for the signal trampoline in inferior, if any */CORE_ADDR sigtramp_address, sigtramp_end;/* Allocate zeroed memory */static PTRxzalloc (size)     unsigned int size;{  PTR p = xmalloc (size);  memset (p, 0, size);  return p;}/* Exported procedure: Builds a symtab from the PST partial one.   Restores the environment in effect when PST was created, delegates   most of the work to an ancillary procedure, and sorts   and reorders the symtab list at the end */static voidmdebug_psymtab_to_symtab (pst)     struct partial_symtab *pst;{  if (!pst)    return;  if (info_verbose)    {      printf_filtered ("Reading in symbols for %s...", pst->filename);      gdb_flush (gdb_stdout);    }  next_symbol_text_func = mdebug_next_symbol_text;  psymtab_to_symtab_1 (pst, pst->filename);  /* Match with global symbols.  This only needs to be done once,     after all of the symtabs and dependencies have been read in.   */  scan_file_globals (pst->objfile);  if (info_verbose)    printf_filtered ("done.\n");}/* File-level interface functions *//* Find a file descriptor given its index RF relative to a file CF */static FDR *get_rfd (cf, rf)     int cf, rf;{  FDR *fdrs;  register FDR *f;  RFDT rfd;  fdrs = debug_info->fdr;  f = fdrs + cf;  /* Object files do not have the RFD table, all refs are absolute */  if (f->rfdBase == 0)    return fdrs + rf;  (*debug_swap->swap_rfd_in) (cur_bfd,			     ((char *) debug_info->external_rfd			      + ((f->rfdBase + rf)				 * debug_swap->external_rfd_size)),			     &rfd);  return fdrs + rfd;}/* Return a safer print NAME for a file descriptor */static char *fdr_name (f)     FDR *f;{  if (f->rss == -1)    return "<stripped file>";  if (f->rss == 0)    return "<NFY>";  return debug_info->ss + f->issBase + f->rss;}/* Read in and parse the symtab of the file OBJFILE.  Symbols from   different sections are relocated via the SECTION_OFFSETS.  */voidmdebug_build_psymtabs (objfile, swap, info, section_offsets)     struct objfile *objfile;     const struct ecoff_debug_swap *swap;     struct ecoff_debug_info *info;     struct section_offsets *section_offsets;{  cur_bfd = objfile->obfd;  debug_swap = swap;  debug_info = info;  /* Make sure all the FDR information is swapped in.  */  if (info->fdr == (FDR *) NULL)    {      char *fdr_src;      char *fdr_end;      FDR *fdr_ptr;      info->fdr = (FDR *) obstack_alloc (&objfile->psymbol_obstack,					 (info->symbolic_header.ifdMax					  * sizeof (FDR)));      fdr_src = info->external_fdr;      fdr_end = (fdr_src		 + info->symbolic_header.ifdMax * swap->external_fdr_size);      fdr_ptr = info->fdr;      for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++)	(*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr);    }  parse_partial_symbols (objfile, section_offsets);#if 0  /* Check to make sure file was compiled with -g.  If not, warn the     user of this limitation.  */  if (compare_glevel (max_glevel, GLEVEL_2) < 0)    {      if (max_gdbinfo == 0)	printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",		 objfile->name);      printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");      gdb_flush (gdb_stdout);    }#endif}/* Local utilities *//* Map of FDR indexes to partial symtabs */struct pst_map{  struct partial_symtab *pst;	/* the psymtab proper */  long n_globals;		/* exported globals (external symbols) */  long globals_offset;		/* cumulative */};/* Utility stack, used to nest procedures and blocks properly.   It is a doubly linked list, to avoid too many alloc/free.   Since we might need it quite a few times it is NOT deallocated   after use. */static struct parse_stack{  struct parse_stack *next, *prev;  struct symtab *cur_st;	/* Current symtab. */  struct block *cur_block;	/* Block in it. */  /* What are we parsing.  stFile, or stBlock are for files and     blocks.  stProc or stStaticProc means we have seen the start of a     procedure, but not the start of the block within in.  When we see     the start of that block, we change it to stNil, without pushing a     new block, i.e. stNil means both a procedure and a block.  */  int blocktype;  int maxsyms;			/* Max symbols in this block. */  struct type *cur_type;	/* Type we parse fields for. */  int cur_field;		/* Field number in cur_type. */  CORE_ADDR procadr;		/* Start addres of this procedure */  int numargs;			/* Its argument count */} *top_stack;			/* Top stack ptr *//* Enter a new lexical context */static voidpush_parse_stack (){  struct parse_stack *new;  /* Reuse frames if possible */  if (top_stack && top_stack->prev)    new = top_stack->prev;  else    new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack));  /* Initialize new frame with previous content */  if (top_stack)    {      register struct parse_stack *prev = new->prev;      *new = *top_stack;      top_stack->prev = new;      new->prev = prev;      new->next = top_stack;    }  top_stack = new;}/* Exit a lexical context */static voidpop_parse_stack (){  if (!top_stack)    return;  if (top_stack->next)    top_stack = top_stack->next;}/* Cross-references might be to things we haven't looked at   yet, e.g. type references.  To avoid too many type   duplications we keep a quick fixup table, an array   of lists of references indexed by file descriptor */struct mdebug_pending{  struct mdebug_pending *next;	/* link */  char *s;			/* the unswapped symbol */  struct type *t;		/* its partial type descriptor */};/* The pending information is kept for an entire object file, and used   to be in the sym_private field.  I took it out when I split   mdebugread from mipsread, because this might not be the only type   of symbols read from an object file.  Instead, we allocate the   pending information table when we create the partial symbols, and   we store a pointer to the single table in each psymtab.  */static struct mdebug_pending **pending_list;/* Check whether we already saw symbol SH in file FH */static struct mdebug_pending *is_pending_symbol (fh, sh)     FDR *fh;     char *sh;{  int f_idx = fh - debug_info->fdr;  register struct mdebug_pending *p;  /* Linear search is ok, list is typically no more than 10 deep */  for (p = pending_list[f_idx]; p; p = p->next)    if (p->s == sh)      break;  return p;}/* Add a new symbol SH of type T */static voidadd_pending (fh, sh, t)     FDR *fh;     char *sh;     struct type *t;{  int f_idx = fh - debug_info->fdr;  struct mdebug_pending *p = is_pending_symbol (fh, sh);  /* Make sure we do not make duplicates */  if (!p)    {      p = ((struct mdebug_pending *)	   obstack_alloc (&current_objfile->psymbol_obstack,			  sizeof (struct mdebug_pending)));      p->s = sh;      p->t = t;      p->next = pending_list[f_idx];      pending_list[f_idx] = p;    }}/* Parsing Routines proper. *//* Parse a single symbol. Mostly just make up a GDB symbol for it.   For blocks, procedures and types we open a new lexical context.   This is basically just a big switch on the symbol's type.  Argument   AX is the base pointer of aux symbols for this file (fh->iauxBase).   EXT_SH points to the unswapped symbol, which is needed for struct,   union, etc., types; it is NULL for an EXTR.  BIGEND says whether   aux symbols are big-endian or little-endian.  Return count of   SYMR's handled (normally one).  */static intparse_symbol (sh, ax, ext_sh, bigend, section_offsets)     SYMR *sh;     union aux_ext *ax;     char *ext_sh;     int bigend;     struct section_offsets *section_offsets;{  const bfd_size_type external_sym_size = debug_swap->external_sym_size;  void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) =    debug_swap->swap_sym_in;  char *name;  struct symbol *s;  struct block *b;  struct mdebug_pending *pend;  struct type *t;  struct field *f;  int count = 1;  enum address_class class;  TIR tir;  long svalue = sh->value;  int bitsize;  if (ext_sh == (char *) NULL)    name = debug_info->ssext + sh->iss;  else    name = debug_info->ss + cur_fdr->issBase + sh->iss;  switch (sh->sc)    {    case scText:    case scRConst:      /* Do not relocate relative values.	 The value of a stEnd symbol is the displacement from the	 corresponding start symbol value.	 The value of a stBlock symbol is the displacement from the	 procedure address.  */      if (sh->st != stEnd && sh->st != stBlock)	sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT);      break;    case scData:    case scSData:    case scRData:    case scPData:    case scXData:      sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA);      break;    case scBss:    case scSBss:      sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS);      break;    }  switch (sh->st)    {    case stNil:      break;    case stGlobal:		/* external symbol, goes into global block */      class = LOC_STATIC;      b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),			     GLOBAL_BLOCK);      s = new_symbol (name);      SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;      goto data;    case stStatic:		/* static data, goes into current block. */      class = LOC_STATIC;      b = top_stack->cur_block;      s = new_symbol (name);      if (sh->sc == scCommon || sh->sc == scSCommon)	{	  /* It is a FORTRAN common block.  At least for SGI Fortran the	     address is not in the symbol; we need to fix it later in	     scan_file_globals.  */	  int bucket = hashname (SYMBOL_NAME (s));	  SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket];	  global_sym_chain[bucket] = s;	}      else	SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;      goto data;    case stLocal:		/* local variable, goes into current block */      if (sh->sc == scRegister)	{	  class = LOC_REGISTER;	  svalue = ECOFF_REG_TO_REGNUM (svalue);	}      else	class = LOC_LOCAL;      b = top_stack->cur_block;      s = new_symbol (name);      SYMBOL_VALUE (s) = svalue;    data:			/* Common code for symbols describing data */      SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;      SYMBOL_CLASS (s) = class;      add_symbol (s, b);      /* Type could be missing if file is compiled without debugging info.  */      if (sh->sc == scUndefined || sh->sc == scSUndefined	  || sh->sc == scNil || sh->index == indexNil)	SYMBOL_TYPE (s) = nodebug_var_symbol_type;      else	SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);      /* Value of a data symbol is its memory address */      break;    case stParam:		/* arg to procedure, goes into current block */      max_gdbinfo++;      found_ecoff_debugging_info = 1;      top_stack->numargs++;      /* Special GNU C++ name.  */      if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0)	name = "this";		/* FIXME, not alloc'd in obstack */      s = new_symbol (name);      SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;      switch (sh->sc)	{	case scRegister:	  /* Pass by value in register.  */	  SYMBOL_CLASS(s) = LOC_REGPARM;	  svalue = ECOFF_REG_TO_REGNUM (svalue);	  break;	case scVar:	  /* Pass by reference on stack.  */	  SYMBOL_CLASS(s) = LOC_REF_ARG;	  break;	case scVarRegister:	  /* Pass by reference in register.  */	  SYMBOL_CLASS(s) = LOC_REGPARM_ADDR;	  svalue = ECOFF_REG_TO_REGNUM (svalue);	  break;	default:	  /* Pass by value on stack.  */	  SYMBOL_CLASS(s) = LOC_ARG;	  break;	}      SYMBOL_VALUE (s) = svalue;      SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);      add_symbol (s, top_stack->cur_block);      break;    case stLabel:		/* label, goes into current block */      s = new_symbol (name);      SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;	/* so that it can be used */      SYMBOL_CLASS (s) = LOC_LABEL;	/* but not misused */      SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;      SYMBOL_TYPE (s) = mdebug_type_int;      add_symbol (s, top_stack->cur_block);      break;    case stProc:		/* Procedure, usually goes into global block */    case stStaticProc:		/* Static procedure, goes into current block */      s = new_symbol (name);      SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;      SYMBOL_CLASS (s) = LOC_BLOCK;      /* Type of the return value */      if (sh->sc == scUndefined || sh->sc == scSUndefined || sh->sc == scNil)	t = mdebug_type_int;      else	{	  t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name);	  if (STREQ(name, "malloc") && t->code == TYPE_CODE_VOID)	    {	      /* I don't know why, but, at least under Linux/Alpha,		 when linking against a malloc without debugging		 symbols, its read as a function returning void---this		 is bad because it means we cannot call functions with		 string arguments interactively; i.e., "call		 printf("howdy\n")" would fail with the error message		 "program has no memory available".  To avoid this, we		 patch up the type and make it void*		 instead. (davidm@azstarnet.com)		 */	      t = make_pointer_type (t, NULL);	    }	}      b = top_stack->cur_block;      if (sh->st == stProc)	{	  struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);	  /* The next test should normally be true, but provides a	     hook for nested functions (which we don't want to make	     global). */	  if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))	    b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);	  /* Irix 5 sometimes has duplicate names for the same	     function.  We want to add such names up at the global	     level, not as a nested function.  */	  else if (sh->value == top_stack->procadr)	    b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);	}      add_symbol (s, b);      /* Make a type for the procedure itself */      SYMBOL_TYPE (s) = lookup_function_type (t);      /* Create and enter a new lexical context */      b = new_block (top_stack->maxsyms);      SYMBOL_BLOCK_VALUE (s) = b;      BLOCK_FUNCTION (b) = s;      BLOCK_START (b) = BLOCK_END (b) = sh->value;      BLOCK_SUPERBLOCK (b) = top_stack->cur_block;      add_block (b, top_stack->cur_st);      /* Not if we only have partial info */      if (sh->sc == scUndefined || sh->sc == scSUndefined || sh->sc == scNil)	break;      push_parse_stack ();      top_stack->cur_block = b;      top_stack->blocktype = sh->st;      top_stack->cur_type = SYMBOL_TYPE (s);      top_stack->cur_field = -1;      top_stack->procadr = sh->value;      top_stack->numargs = 0;      break;      /* Beginning of code for structure, union, and enum definitions.	       They all share a common set of local variables, defined here.  */      {	enum type_code type_code;	char *ext_tsym;	int nfields;	long max_value;	struct field *f;    case stStruct:		/* Start a block defining a struct type */	type_code = TYPE_CODE_STRUCT;	goto structured_common;    case stUnion:		/* Start a block defining a union type */	type_code = TYPE_CODE_UNION;	goto structured_common;    case stEnum:		/* Start a block defining an enum type */	type_code = TYPE_CODE_ENUM;	goto structured_common;    case stBlock:		/* Either a lexical block, or some type */	if (sh->sc != scInfo && sh->sc != scCommon && sh->sc != scSCommon)	  goto case_stBlock_code;	/* Lexical block */	type_code = TYPE_CODE_UNDEF;	/* We have a type.  */	/* Common code for handling struct, union, enum, and/or as-yet-	   unknown-type blocks of info about structured data.  `type_code'	   has been set to the proper TYPE_CODE, if we know it.  */      structured_common:	found_ecoff_debugging_info = 1;	push_parse_stack ();	top_stack->blocktype = stBlock;	/* First count the number of fields and the highest value. */	nfields = 0;	max_value = 0;	for (ext_tsym = ext_sh + external_sym_size;	     ;	     ext_tsym += external_sym_size)	  {	    SYMR tsym;	    (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);	    switch (tsym.st)	      {	      case stEnd:		goto end_of_fields;	      case stMember:		if (nfields == 0 && type_code == TYPE_CODE_UNDEF)		  /* If the type of the member is Nil (or Void),		     without qualifiers, assume the tag is an		     enumeration.		     Alpha cc -migrate enums are recognized by a zero		     index and a zero symbol value.  */		  if (tsym.index == indexNil		      || (tsym.index == 0 && sh->value == 0))		    type_code = TYPE_CODE_ENUM;		  else		    {		      (*debug_swap->swap_tir_in) (bigend,						  &ax[tsym.index].a_ti,						  &tir);		      if ((tir.bt == btNil || tir.bt == btVoid)			  && tir.tq0 == tqNil)			type_code = TYPE_CODE_ENUM;		    }		nfields++;		if (tsym.value > max_value)		  max_value = tsym.value;		break;	      case stBlock:	      case stUnion:	      case stEnum:	      case stStruct:		{#if 0		  /* This is a no-op; is it trying to tell us something		     we should be checking?  */		  if (tsym.sc == scVariant);	/*UNIMPLEMENTED*/#endif		  if (tsym.index != 0)		    {		      /* This is something like a struct within a			 struct.  Skip over the fields of the inner			 struct.  The -1 is because the for loop will			 increment ext_tsym.  */		      ext_tsym = ((char *) debug_info->external_sym				  + ((cur_fdr->isymBase + tsym.index - 1)				     * external_sym_size));		    }		}		break;	      case stTypedef:		/* mips cc puts out a typedef for struct x if it is not yet		   defined when it encounters		   struct y { struct x *xp; };		   Just ignore it. */		break;	      case stIndirect:		/* Irix5 cc puts out a stIndirect for struct x if it is not		   yet defined when it encounters		   struct y { struct x *xp; };		   Just ignore it. */		break;	      default:		complain (&block_member_complaint, tsym.st);	      }	  }      end_of_fields:;	/* In an stBlock, there is no way to distinguish structs,	   unions, and enums at this point.  This is a bug in the	   original design (that has been fixed with the recent	   addition of the stStruct, stUnion, and stEnum symbol	   types.)  The way you can tell is if/when you see a variable	   or field of that type.  In that case the variable's type	   (in the AUX table) says if the type is struct, union, or	   enum, and points back to the stBlock here.  So you can	   patch the tag kind up later - but only if there actually is	   a variable or field of that type.	   So until we know for sure, we will guess at this point.	   The heuristic is:	   If the first member has index==indexNil or a void type,	   assume we have an enumeration.	   Otherwise, if there is more than one member, and all	   the members have offset 0, assume we have a union.	   Otherwise, assume we have a struct.	   The heuristic could guess wrong in the case of of an	   enumeration with no members or a union with one (or zero)	   members, or when all except the last field of a struct have	   width zero.  These are uncommon and/or illegal situations,	   and in any case guessing wrong probably doesn't matter	   much.	   But if we later do find out we were wrong, we fixup the tag	   kind.  Members of an enumeration must be handled	   differently from struct/union fields, and that is harder to	   patch up, but luckily we shouldn't need to.  (If there are	   any enumeration members, we can tell for sure it's an enum	   here.) */	if (type_code == TYPE_CODE_UNDEF)	  if (nfields > 1 && max_value == 0)	    type_code = TYPE_CODE_UNION;	  else	    type_code = TYPE_CODE_STRUCT;	/* Create a new type or use the pending type.  */	pend = is_pending_symbol (cur_fdr, ext_sh);	if (pend == (struct mdebug_pending *) NULL)	  {	    t = new_type (NULL);	    add_pending (cur_fdr, ext_sh, t);	  }	else	  t = pend->t;	/* Do not set the tag name if it is a compiler generated tag name	   (.Fxx or .xxfake or empty) for unnamed struct/union/enums.	   Alpha cc puts out an sh->iss of zero for those.  */	if (sh->iss == 0 || name[0] == '.' || name[0] == '\0')	  TYPE_TAG_NAME (t) = NULL;	else	  TYPE_TAG_NAME (t) = obconcat (&current_objfile->symbol_obstack,					"", "", name);	TYPE_CODE (t) = type_code;	TYPE_LENGTH (t) = sh->value;	TYPE_NFIELDS (t) = nfields;	TYPE_FIELDS (t) = f = ((struct field *)			       TYPE_ALLOC (t,					   nfields * sizeof (struct field)));	if (type_code == TYPE_CODE_ENUM)	  {	    int unsigned_enum = 1;	    /* This is a non-empty enum. */	    /* DEC c89 has the number of enumerators in the sh.value field,	       not the type length, so we have to compensate for that	       incompatibility quirk.	       This might do the wrong thing for an enum with one or two	       enumerators and gcc -gcoff -fshort-enums, but these cases	       are hopefully rare enough.	       Alpha cc -migrate has a sh.value field of zero, we adjust	       that too.  */	    if (TYPE_LENGTH (t) == TYPE_NFIELDS (t)		|| TYPE_LENGTH (t) == 0)	      TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT;	    for (ext_tsym = ext_sh + external_sym_size;		 ;		 ext_tsym += external_sym_size)	      {		SYMR tsym;		struct symbol *enum_sym;		(*swap_sym_in) (cur_bfd, ext_tsym, &tsym);		if (tsym.st != stMember)		  break;		f->bitpos = tsym.value;		f->type = t;		f->name = debug_info->ss + cur_fdr->issBase + tsym.iss;		f->bitsize = 0;		enum_sym = ((struct symbol *)			    obstack_alloc (&current_objfile->symbol_obstack,					   sizeof (struct symbol)));		memset ((PTR) enum_sym, 0, sizeof (struct symbol));		SYMBOL_NAME (enum_sym) =		  obsavestring (f->name, strlen (f->name),				&current_objfile->symbol_obstack);		SYMBOL_CLASS (enum_sym) = LOC_CONST;		SYMBOL_TYPE (enum_sym) = t;		SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE;		SYMBOL_VALUE (enum_sym) = tsym.value;		if (SYMBOL_VALUE (enum_sym) < 0)		  unsigned_enum = 0;		add_symbol (enum_sym, top_stack->cur_block);		/* Skip the stMembers that we've handled. */		count++;		f++;	      }	    if (unsigned_enum)	      TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED;	  }	/* make this the current type */	top_stack->cur_type = t;	top_stack->cur_field = 0;	/* Do not create a symbol for alpha cc unnamed structs.  */	if (sh->iss == 0)	  break;	/* gcc puts out an empty struct for an opaque struct definitions,	   do not create a symbol for it either.  */	if (TYPE_NFIELDS (t) == 0)	  {	    TYPE_FLAGS (t) |= TYPE_FLAG_STUB;	    break;	  }	s = new_symbol (name);	SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE;	SYMBOL_CLASS (s) = LOC_TYPEDEF;	SYMBOL_VALUE (s) = 0;	SYMBOL_TYPE (s) = t;	add_symbol (s, top_stack->cur_block);	break;	/* End of local variables shared by struct, union, enum, and	   block (as yet unknown struct/union/enum) processing.  */      }    case_stBlock_code:      found_ecoff_debugging_info = 1;      /* beginnning of (code) block. Value of symbol	 is the displacement from procedure start */      push_parse_stack ();      /* Do not start a new block if this is the outermost block of a	 procedure.  This allows the LOC_BLOCK symbol to point to the	 block with the local variables, so funcname::var works.  */      if (top_stack->blocktype == stProc	  || top_stack->blocktype == stStaticProc)	{	  top_stack->blocktype = stNil;	  break;	}      top_stack->blocktype = stBlock;      b = new_block (top_stack->maxsyms);      BLOCK_START (b) = sh->value + top_stack->procadr;      BLOCK_SUPERBLOCK (b) = top_stack->cur_block;      top_stack->cur_block = b;      add_block (b, top_stack->cur_st);      break;    case stEnd:		/* end (of anything) */      if (sh->sc == scInfo || sh->sc == scCommon || sh->sc == scSCommon)	{	  /* Finished with type */	  top_stack->cur_type = 0;	}      else if (sh->sc == scText &&	       (top_stack->blocktype == stProc ||		top_stack->blocktype == stStaticProc))	{	  /* Finished with procedure */	  struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);	  struct mips_extra_func_info *e;	  struct block *b;	  struct type *ftype = top_stack->cur_type;	  int i;	  BLOCK_END (top_stack->cur_block) += sh->value;	/* size */	  /* Make up special symbol to contain procedure specific info */	  s = new_symbol (MIPS_EFI_SYMBOL_NAME);	  SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;	  SYMBOL_CLASS (s) = LOC_CONST;	  SYMBOL_TYPE (s) = mdebug_type_void;	  e = ((struct mips_extra_func_info *)	       obstack_alloc (&current_objfile->symbol_obstack,			      sizeof (struct mips_extra_func_info)));	  memset ((PTR) e, 0, sizeof (struct mips_extra_func_info));	  SYMBOL_VALUE (s) = (long) e;	  e->numargs = top_stack->numargs;	  e->pdr.framereg = -1;	  add_symbol (s, top_stack->cur_block);	  /* Reallocate symbols, saving memory */	  b = shrink_block (top_stack->cur_block, top_stack->cur_st);	  /* f77 emits proc-level with address bounds==[0,0],	     So look for such child blocks, and patch them.  */	  for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)	    {	      struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i);	      if (BLOCK_SUPERBLOCK (b_bad) == b		  && BLOCK_START (b_bad) == top_stack->procadr		  && BLOCK_END (b_bad) == top_stack->procadr)		{		  BLOCK_START (b_bad) = BLOCK_START (b);		  BLOCK_END (b_bad) = BLOCK_END (b);		}	    }	  if (TYPE_NFIELDS (ftype) <= 0)	    {	      /* No parameter type information is recorded with the function's		 type.  Set that from the type of the parameter symbols. */	      int nparams = top_stack->numargs;	      int iparams;	      struct symbol *sym;	      if (nparams > 0)		{		  TYPE_NFIELDS (ftype) = nparams;		  TYPE_FIELDS (ftype) = (struct field *)		    TYPE_ALLOC (ftype, nparams * sizeof (struct field));						    		  for (i = iparams = 0; iparams < nparams; i++)		    {		      sym = BLOCK_SYM (b, i);		      switch (SYMBOL_CLASS (sym))			{			case LOC_ARG:			case LOC_REF_ARG:			case LOC_REGPARM:			case LOC_REGPARM_ADDR:			  TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym);			  iparams++;			  break;			default:			  break;			}		    }		}	    }	}      else if (sh->sc == scText && top_stack->blocktype == stBlock)	{	  /* End of (code) block. The value of the symbol is the	     displacement from the procedure`s start address of the	     end of this block. */	  BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr;	  shrink_block (top_stack->cur_block, top_stack->cur_st);	}      else if (sh->sc == scText && top_stack->blocktype == stNil)	{	  /* End of outermost block.  Pop parse stack and ignore.  The	     following stEnd of stProc will take care of the block.  */	  ;	}      else if (sh->sc == scText && top_stack->blocktype == stFile)	{	  /* End of file.  Pop parse stack and ignore.  Higher	     level code deals with this.  */	  ;	}      else	complain (&stEnd_complaint, sh->sc);      pop_parse_stack ();	/* restore previous lexical context */      break;    case stMember:		/* member of struct or union */      f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++];      f->name = name;      f->bitpos = sh->value;      bitsize = 0;      f->type = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name);      f->bitsize = bitsize;      break;    case stIndirect:		/* forward declaration on Irix5 */      /* Forward declarations from Irix5 cc are handled by cross_ref,	 skip them.  */      break;    case stTypedef:		/* type definition */      found_ecoff_debugging_info = 1;      /* Typedefs for forward declarations and opaque structs from alpha cc	 are handled by cross_ref, skip them.  */      if (sh->iss == 0)	break;      /* Parse the type or use the pending type.  */      pend = is_pending_symbol (cur_fdr, ext_sh);      if (pend == (struct mdebug_pending *) NULL)	{	  t = parse_type (cur_fd, ax, sh->index, (int *)NULL, bigend, name);	  add_pending (cur_fdr, ext_sh, t);	}      else	t = pend->t;      /* mips cc puts out a typedef with the name of the struct for forward	 declarations. These should not go into the symbol table and	 TYPE_NAME should not be set for them.	 They can't be distinguished from an intentional typedef to	 the same name however:	 x.h:		struct x { int ix; int jx; };		struct xx;	 x.c:		typedef struct x x;		struct xx {int ixx; int jxx; };	 generates a cross referencing stTypedef for x and xx.	 The user visible effect of this is that the type of a pointer	 to struct foo sometimes is given as `foo *' instead of `struct foo *'.	 The problem is fixed with alpha cc and Irix5 cc.  */      /* However if the typedef cross references to an opaque aggregate, it	 is safe to omit it from the symbol table.  */      if (has_opaque_xref (cur_fdr, sh))	break;      s = new_symbol (name);      SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;      SYMBOL_CLASS (s) = LOC_TYPEDEF;      SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block;      SYMBOL_TYPE (s) = t;      add_symbol (s, top_stack->cur_block);      /* Incomplete definitions of structs should not get a name.  */      if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL	  && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0              || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT		  && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION)))	{	  if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR	      || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC)	    {	      /* If we are giving a name to a type such as "pointer to		 foo" or "function returning foo", we better not set		 the TYPE_NAME.  If the program contains "typedef char		 *caddr_t;", we don't want all variables of type char		 * to print as caddr_t.  This is not just a		 consequence of GDB's type management; CC and GCC (at		 least through version 2.4) both output variables of		 either type char * or caddr_t with the type		 refering to the stTypedef symbol for caddr_t.  If a future		 compiler cleans this up it GDB is not ready for it		 yet, but if it becomes ready we somehow need to		 disable this check (without breaking the PCC/GCC2.4		 case).		 Sigh.		 Fortunately, this check seems not to be necessary		 for anything except pointers or functions.  */	    }	  else	    TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s);	}      break;    case stFile:		/* file name */      push_parse_stack ();      top_stack->blocktype = sh->st;      break;      /* I`ve never seen these for C */    case stRegReloc:      break;			/* register relocation */    case stForward:      break;			/* forwarding address */    case stConstant:      break;			/* constant */    default:      complain (&unknown_mdebug_symtype_complaint, sh->st);      break;    }  return count;}/* Parse the type information provided in the raw AX entries for   the symbol SH. Return the bitfield size in BS, in case.   We must byte-swap the AX entries before we use them; BIGEND says whether   they are big-endian or little-endian (from fh->fBigendian).  */static struct type *parse_type (fd, ax, aux_index, bs, bigend, sym_name)     int fd;     union aux_ext *ax;     unsigned int aux_index;     int *bs;     int bigend;     char *sym_name;{  /* Null entries in this map are treated specially */  static struct type **map_bt[] =  {    &mdebug_type_void,			/* btNil */    &mdebug_type_adr_32,		/* btAdr */    &mdebug_type_char,			/* btChar */    &mdebug_type_unsigned_char,		/* btUChar */    &mdebug_type_short,			/* btShort */    &mdebug_type_unsigned_short,	/* btUShort */    &mdebug_type_int_32,		/* btInt */    &mdebug_type_unsigned_int_32,	/* btUInt */    &mdebug_type_long_32,		/* btLong */    &mdebug_type_unsigned_long_32,	/* btULong */    &mdebug_type_float,			/* btFloat */    &mdebug_type_double,		/* btDouble */    0,					/* btStruct */    0,					/* btUnion */    0,					/* btEnum */    0,					/* btTypedef */    0,					/* btRange */    0,					/* btSet */    &mdebug_type_complex,		/* btComplex */    &mdebug_type_double_complex,	/* btDComplex */    0,					/* btIndirect */    &mdebug_type_fixed_dec,		/* btFixedDec */    &mdebug_type_float_dec,		/* btFloatDec */    &mdebug_type_string,		/* btString */    0,					/* btBit */    0,					/* btPicture */    &mdebug_type_void,			/* btVoid */    0,					/* DEC C++:  Pointer to member */    0,					/* DEC C++:  Virtual function table */    0,					/* DEC C++:  Class (Record) */    &mdebug_type_long_64,		/* btLong64  */    &mdebug_type_unsigned_long_64,	/* btULong64 */    &mdebug_type_long_long_64,		/* btLongLong64  */    &mdebug_type_unsigned_long_long_64,	/* btULongLong64 */    &mdebug_type_adr_64,		/* btAdr64 */    &mdebug_type_int_64,		/* btInt64  */    &mdebug_type_unsigned_int_64,	/* btUInt64 */  };  TIR t[1];  struct type *tp = 0;  enum type_code type_code = TYPE_CODE_UNDEF;  /* Handle undefined types, they have indexNil. */  if (aux_index == indexNil)    return mdebug_type_int;  /* Handle corrupt aux indices.  */  if (aux_index >= (debug_info->fdr + fd)->caux)    {      complain (&index_complaint, sym_name);      return mdebug_type_int;    }  ax += aux_index;  /* Use aux as a type information record, map its basic type.  */  (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);  if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt)))    {      complain (&basic_type_complaint, t->bt, sym_name);      return mdebug_type_int;    }  if (map_bt[t->bt])    {      tp = *map_bt[t->bt];    }  else    {      tp = NULL;      /* Cannot use builtin types -- build our own */      switch (t->bt)	{	case btStruct:	  type_code = TYPE_CODE_STRUCT;	  break;	case btUnion:	  type_code = TYPE_CODE_UNION;	  break;	case btEnum:	  type_code = TYPE_CODE_ENUM;	  break;	case btRange:	  type_code = TYPE_CODE_RANGE;	  break;	case btSet:	  type_code = TYPE_CODE_SET;	  break;	case btIndirect:	  /* alpha cc -migrate uses this for typedefs. The true type will	     be obtained by crossreferencing below.  */	  type_code = TYPE_CODE_ERROR;	  break;	case btTypedef:	  /* alpha cc uses this for typedefs. The true type will be	     obtained by crossreferencing below.  */	  type_code = TYPE_CODE_ERROR;	  break;	default:	  complain (&basic_type_complaint, t->bt, sym_name);	  return mdebug_type_int;	}    }  /* Move on to next aux */  ax++;  if (t->fBitfield)    {      int width = AUX_GET_WIDTH (bigend, ax);      /* Inhibit core dumps with some cfront generated objects that	 corrupt the TIR.  */      if (bs == (int *)NULL)	{	  /* Alpha cc -migrate encodes char and unsigned char types	     as short and unsigned short types with a field width of 8.	     Enum types also have a field width which we ignore for now.  */	  if (t->bt == btShort && width == 8)	    tp = mdebug_type_char;	  else if (t->bt == btUShort && width == 8)	    tp = mdebug_type_unsigned_char;	  else if (t->bt == btEnum)	    ;	  else	    complain (&bad_fbitfield_complaint, sym_name);	}      else        *bs = width;      ax++;    }  /* A btIndirect entry cross references to an aux entry containing     the type.  */  if (t->bt == btIndirect)    {      RNDXR rn[1];      int rf;      FDR *xref_fh;      int xref_fd;      (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);      ax++;      if (rn->rfd == 0xfff)	{	  rf = AUX_GET_ISYM (bigend, ax);	  ax++;	}      else	rf = rn->rfd;      if (rf == -1)	{	  complain (&bad_indirect_xref_complaint, sym_name);	  return mdebug_type_int;	}      xref_fh = get_rfd (fd, rf);      xref_fd = xref_fh - debug_info->fdr;      tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase,		       rn->index, (int *) NULL, xref_fh->fBigendian, sym_name);    }  /* All these types really point to some (common) MIPS type     definition, and only the type-qualifiers fully identify     them.  We'll make the same effort at sharing. */  if (t->bt == btStruct ||      t->bt == btUnion ||      t->bt == btEnum ||      /* btSet (I think) implies that the name is a tag name, not a typedef	 name.  This apparently is a MIPS extension for C sets.  */      t->bt == btSet)    {      char *name;      /* Try to cross reference this type, build new type on failure.  */      ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);      if (tp == (struct type *) NULL)	tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);      /* DEC c89 produces cross references to qualified aggregate types,	 dereference them.  */      while (TYPE_CODE (tp) == TYPE_CODE_PTR	     || TYPE_CODE (tp) == TYPE_CODE_ARRAY)	tp = tp->target_type;      /* Make sure that TYPE_CODE(tp) has an expected type code.	 Any type may be returned from cross_ref if file indirect entries	 are corrupted.  */      if (TYPE_CODE (tp) != TYPE_CODE_STRUCT	  && TYPE_CODE (tp) != TYPE_CODE_UNION	  && TYPE_CODE (tp) != TYPE_CODE_ENUM)	{	  complain (&unexpected_type_code_complaint, sym_name);	}      else	{	  /* Usually, TYPE_CODE(tp) is already type_code.  The main	     exception is if we guessed wrong re struct/union/enum.	     But for struct vs. union a wrong guess is harmless, so	     don't complain().  */	  if ((TYPE_CODE (tp) == TYPE_CODE_ENUM	       && type_code != TYPE_CODE_ENUM)	      || (TYPE_CODE (tp) != TYPE_CODE_ENUM		  && type_code == TYPE_CODE_ENUM))	    {	      complain (&bad_tag_guess_complaint, sym_name);	    }	  if (TYPE_CODE (tp) != type_code)	    {	      TYPE_CODE (tp) = type_code;	    }	  /* Do not set the tag name if it is a compiler generated tag name	      (.Fxx or .xxfake or empty) for unnamed struct/union/enums.  */	  if (name[0] == '.' || name[0] == '\0')	    TYPE_TAG_NAME (tp) = NULL;	  else if (TYPE_TAG_NAME (tp) == NULL		   || !STREQ (TYPE_TAG_NAME (tp), name))	    TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name),					       &current_objfile->type_obstack);	}    }  /* All these types really point to some (common) MIPS type     definition, and only the type-qualifiers fully identify     them.  We'll make the same effort at sharing.     FIXME: We are not doing any guessing on range types.  */  if (t->bt == btRange)    {      char *name;      /* Try to cross reference this type, build new type on failure.  */      ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);      if (tp == (struct type *) NULL)	tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);      /* Make sure that TYPE_CODE(tp) has an expected type code.	 Any type may be returned from cross_ref if file indirect entries	 are corrupted.  */      if (TYPE_CODE (tp) != TYPE_CODE_RANGE)	{	  complain (&unexpected_type_code_complaint, sym_name);	}      else	{	  /* Usually, TYPE_CODE(tp) is already type_code.  The main	     exception is if we guessed wrong re struct/union/enum. */	  if (TYPE_CODE (tp) != type_code)	    {	      complain (&bad_tag_guess_complaint, sym_name);	      TYPE_CODE (tp) = type_code;	    }	  if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name))	    TYPE_NAME (tp) = obsavestring (name, strlen (name),					   &current_objfile->type_obstack);	}    }  if (t->bt == btTypedef)    {      char *name;      /* Try to cross reference this type, it should succeed.  */      ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);      if (tp == (struct type *) NULL)	{	  complain (&unable_to_cross_ref_complaint, sym_name);	  tp = mdebug_type_int;	}    }  /* Deal with range types */  if (t->bt == btRange)    {      TYPE_NFIELDS (tp) = 2;      TYPE_FIELDS (tp) = ((struct field *)			  TYPE_ALLOC (tp, 2 * sizeof (struct field)));      TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"),					      &current_objfile->type_obstack);      TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax);      ax++;      TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"),					      &current_objfile->type_obstack);      TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax);      ax++;    }  /* Parse all the type qualifiers now. If there are more     than 6 the game will continue in the next aux */  while (1)    {#define PARSE_TQ(tq) \      if (t->tq != tqNil) \	ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \      else \	break;      PARSE_TQ (tq0);      PARSE_TQ (tq1);      PARSE_TQ (tq2);      PARSE_TQ (tq3);      PARSE_TQ (tq4);      PARSE_TQ (tq5);#undef	PARSE_TQ      /* mips cc 2.x and gcc never put out continued aux entries.  */      if (!t->continued)	break;      (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);      ax++;    }  /* Complain for illegal continuations due to corrupt aux entries.  */  if (t->continued)    complain (&bad_continued_complaint, sym_name);   return tp;}/* Make up a complex type from a basic one.  Type is passed by   reference in TPP and side-effected as necessary. The type   qualifier TQ says how to handle the aux symbols at AX for   the symbol SX we are currently analyzing.  BIGEND says whether   aux symbols are big-endian or little-endian.   Returns the number of aux symbols we parsed. */static intupgrade_type (fd, tpp, tq, ax, bigend, sym_name)     int fd;     struct type **tpp;     int tq;     union aux_ext *ax;     int bigend;     char *sym_name;{  int off;  struct type *t;  /* Used in array processing */  int rf, id;  FDR *fh;  struct type *range;  struct type *indx;  int lower, upper;  RNDXR rndx;  switch (tq)    {    case tqPtr:      t = lookup_pointer_type (*tpp);      *tpp = t;      return 0;    case tqProc:      t = lookup_function_type (*tpp);      *tpp = t;      return 0;    case tqArray:      off = 0;      /* Determine and record the domain type (type of index) */      (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx);      id = rndx.index;      rf = rndx.rfd;      if (rf == 0xfff)	{	  ax++;	  rf = AUX_GET_ISYM (bigend, ax);	  off++;	}      fh = get_rfd (fd, rf);      indx = parse_type (fh - debug_info->fdr,			 debug_info->external_aux + fh->iauxBase,			 id, (int *) NULL, bigend, sym_name);      /* The bounds type should be an integer type, but might be anything	 else due to corrupt aux entries.  */      if (TYPE_CODE (indx) != TYPE_CODE_INT)	{	  complain (&array_index_type_complaint, sym_name);	  indx = mdebug_type_int;	}      /* Get the bounds, and create the array type.  */      ax++;      lower = AUX_GET_DNLOW (bigend, ax);      ax++;      upper = AUX_GET_DNHIGH (bigend, ax);      ax++;      rf = AUX_GET_WIDTH (bigend, ax);	/* bit size of array element */      range = create_range_type ((struct type *) NULL, indx,				 lower, upper);      t = create_array_type ((struct type *) NULL, *tpp, range);      /* We used to fill in the supplied array element bitsize	 here if the TYPE_LENGTH of the target type was zero.	 This happens for a `pointer to an array of anonymous structs',	 but in this case the array element bitsize is also zero,	 so nothing is gained.	 And we used to check the TYPE_LENGTH of the target type against	 the supplied array element bitsize.	 gcc causes a mismatch for `pointer to array of object',	 since the sdb directives it uses do not have a way of	 specifying the bitsize, but it does no harm (the	 TYPE_LENGTH should be correct) and we should be able to	 ignore the erroneous bitsize from the auxiliary entry safely.	 dbx seems to ignore it too.  */      /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH	 problem.  */      if (TYPE_LENGTH (*tpp) == 0)	{	  TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB;	}      *tpp = t;      return 4 + off;    case tqVol:      /* Volatile -- currently ignored */      return 0;    case tqConst:      /* Const -- currently ignored */      return 0;    default:      complain (&unknown_type_qual_complaint, tq);      return 0;    }}/* Parse a procedure descriptor record PR.  Note that the procedure is   parsed _after_ the local symbols, now we just insert the extra   information we need into a MIPS_EFI_SYMBOL_NAME symbol that has   already been placed in the procedure's main block.  Note also that   images that have been partially stripped (ld -x) have been deprived   of local symbols, and we have to cope with them here.  FIRST_OFF is   the offset of the first procedure for this FDR; we adjust the   address by this amount, but I don't know why.  SEARCH_SYMTAB is the symtab   to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol   in question, or NULL to use top_stack->cur_block.  */static void parse_procedure PARAMS ((PDR *, struct symtab *, CORE_ADDR,				     struct partial_symtab *));static voidparse_procedure (pr, search_symtab, lowest_pdr_addr, pst)     PDR *pr;     struct symtab *search_symtab;     CORE_ADDR lowest_pdr_addr;     struct partial_symtab *pst;{  struct symbol *s, *i;  struct block *b;  struct mips_extra_func_info *e;  char *sh_name;  /* Simple rule to find files linked "-x" */  if (cur_fdr->rss == -1)    {      if (pr->isym == -1)	{	  /* Static procedure at address pr->adr.  Sigh. */	  /* FIXME-32x64.  assuming pr->adr fits in long.  */	  complain (&pdr_static_symbol_complaint, (unsigned long) pr->adr);	  return;	}      else	{	  /* external */	  EXTR she;	  	  (*debug_swap->swap_ext_in) (cur_bfd,				      ((char *) debug_info->external_ext				       + (pr->isym					  * debug_swap->external_ext_size)),				      &she);	  sh_name = debug_info->ssext + she.asym.iss;	}    }  else    {      /* Full symbols */      SYMR sh;      (*debug_swap->swap_sym_in) (cur_bfd,				  ((char *) debug_info->external_sym				   + ((cur_fdr->isymBase + pr->isym)				      * debug_swap->external_sym_size)),				  &sh);      sh_name = debug_info->ss + cur_fdr->issBase + sh.iss;    }  if (search_symtab != NULL)    {#if 0      /* This loses both in the case mentioned (want a static, find a global),	 but also if we are looking up a non-mangled name which happens to	 match the name of a mangled function.  */      /* We have to save the cur_fdr across the call to lookup_symbol.	 If the pdr is for a static function and if a global function with	 the same name exists, lookup_symbol will eventually read in the symtab	 for the global function and clobber cur_fdr.  */      FDR *save_cur_fdr = cur_fdr;      s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL);      cur_fdr = save_cur_fdr;#else      s = mylookup_symbol	(sh_name,	 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK),	 VAR_NAMESPACE,	 LOC_BLOCK);#endif    }  else    s = mylookup_symbol (sh_name, top_stack->cur_block,			 VAR_NAMESPACE, LOC_BLOCK);  if (s != 0)    {      b = SYMBOL_BLOCK_VALUE (s);    }  else    {      complain (&pdr_for_nonsymbol_complaint, sh_name);#if 1      return;#else/* FIXME -- delete.  We can't do symbol allocation now; it's all done.  */      s = new_symbol (sh_name);      SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;      SYMBOL_CLASS (s) = LOC_BLOCK;      /* Donno its type, hope int is ok */      SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int);      add_symbol (s, top_stack->cur_block);      /* Wont have symbols for this one */      b = new_block (2);      SYMBOL_BLOCK_VALUE (s) = b;      BLOCK_FUNCTION (b) = s;      BLOCK_START (b) = pr->adr;      /* BOUND used to be the end of procedure's text, but the	 argument is no longer passed in.  */      BLOCK_END (b) = bound;      BLOCK_SUPERBLOCK (b) = top_stack->cur_block;      add_block (b, top_stack->cur_st);#endif    }  i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST);  if (i)    {      e = (struct mips_extra_func_info *) SYMBOL_VALUE (i);      e->pdr = *pr;      e->pdr.isym = (long) s;      e->pdr.adr += pst->textlow - lowest_pdr_addr;      /* Correct incorrect setjmp procedure descriptor from the library	 to make backtrace through setjmp work.  */      if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp"))	{	  complain (&bad_setjmp_pdr_complaint, 0);	  e->pdr.pcreg = RA_REGNUM;	  e->pdr.regmask = 0x80000000;	  e->pdr.regoffset = -4;	}    }  /* It would be reasonable that functions that have been compiled     without debugging info have a btNil type for their return value,     and functions that are void and are compiled with debugging info     have btVoid.     gcc and DEC f77 put out btNil types for both cases, so btNil is mapped     to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'     case right.     The glevel field in cur_fdr could be used to determine the presence     of debugging info, but GCC doesn't always pass the -g switch settings     to the assembler and GAS doesn't set the glevel field from the -g switch     settings.     To work around these problems, the return value type of a TYPE_CODE_VOID     function is adjusted accordingly if no debugging info was found in the     compilation unit.  */   if (processing_gcc_compilation == 0      && found_ecoff_debugging_info == 0      && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID)    SYMBOL_TYPE (s) = nodebug_func_symbol_type;}/* Relocate the extra function info pointed to by the symbol table.  */voidecoff_relocate_efi (sym, delta)     struct symbol *sym;     CORE_ADDR delta;{  struct mips_extra_func_info *e;  e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym);    e->pdr.adr += delta;}/* Parse the external symbol ES. Just call parse_symbol() after   making sure we know where the aux are for it.   BIGEND says whether aux entries are big-endian or little-endian.   This routine clobbers top_stack->cur_block and ->cur_st. */static void parse_external PARAMS ((EXTR *, int, struct section_offsets *));static voidparse_external (es, bigend, section_offsets)     EXTR *es;     int bigend;     struct section_offsets *section_offsets;{  union aux_ext *ax;  if (es->ifd != ifdNil)    {      cur_fd = es->ifd;      cur_fdr = debug_info->fdr + cur_fd;      ax = debug_info->external_aux + cur_fdr->iauxBase;    }  else    {      cur_fdr = debug_info->fdr;      ax = 0;    }  /* Reading .o files */  if (es->asym.sc == scUndefined || es->asym.sc == scSUndefined      || es->asym.sc == scNil)    {      char *what;      switch (es->asym.st)	{	case stNil:	  /* These are generated for static symbols in .o files,	     ignore them.  */	  return;	case stStaticProc:	case stProc:	  what = "procedure";	  n_undef_procs++;	  break;	case stGlobal:	  what = "variable";	  n_undef_vars++;	  break;	case stLabel:	  what = "label";	  n_undef_labels++;	  break;	default:	  what = "symbol";	  break;	}      n_undef_symbols++;      /* FIXME:  Turn this into a complaint? */      if (info_verbose)	printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",			 what, debug_info->ssext + es->asym.iss,			 fdr_name (cur_fdr));      return;    }  switch (es->asym.st)    {    case stProc:    case stStaticProc:      /* There is no need to parse the external procedure symbols.	 If they are from objects compiled without -g, their index will	 be indexNil, and the symbol definition from the minimal symbol	 is preferrable (yielding a function returning int instead of int).	 If the index points to a local procedure symbol, the local	 symbol already provides the correct type.	 Note that the index of the external procedure symbol points	 to the local procedure symbol in the local symbol table, and	 _not_ to the auxiliary symbol info.  */      break;    case stGlobal:    case stLabel:      /* Global common symbols are resolved by the runtime loader,	 ignore them.  */      if (es->asym.sc == scCommon || es->asym.sc == scSCommon)	break;      /* Note that the case of a symbol with indexNil must be handled	 anyways by parse_symbol().  */      parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets);      break;    default:      break;    }}/* Parse the line number info for file descriptor FH into   GDB's linetable LT.  MIPS' encoding requires a little bit   of magic to get things out.  Note also that MIPS' line   numbers can go back and forth, apparently we can live   with that and do not need to reorder our linetables */static void parse_lines PARAMS ((FDR *, PDR *, struct linetable *, int,				 struct partial_symtab *, CORE_ADDR));static voidparse_lines (fh, pr, lt, maxlines, pst, lowest_pdr_addr)     FDR *fh;     PDR *pr;     struct linetable *lt;     int maxlines;     struct partial_symtab *pst;     CORE_ADDR lowest_pdr_addr;{  unsigned char *base;  int j, k;  int delta, count, lineno = 0;  if (fh->cbLine == 0)    return;  /* Scan by procedure descriptors */  k = 0;  for (j = 0; j < fh->cpd; j++, pr++)    {      CORE_ADDR l;      CORE_ADDR adr;      unsigned char *halt;      /* No code for this one */      if (pr->iline == ilineNil ||	  pr->lnLow == -1 || pr->lnHigh == -1)	continue;      /* Determine start and end address of compressed line bytes for	 this procedure.  */      base = debug_info->line + fh->cbLineOffset;      if (j != (fh->cpd - 1)) 	halt = base + pr[1].cbLineOffset;      else 	halt = base + fh->cbLine;      base += pr->cbLineOffset;      adr = pst->textlow + pr->adr - lowest_pdr_addr;      l = adr >> 2;		/* in words */      for (lineno = pr->lnLow; base < halt; )	{	  count = *base & 0x0f;	  delta = *base++ >> 4;	  if (delta >= 8)	    delta -= 16;	  if (delta == -8)	    {	      delta = (base[0] << 8) | base[1];	      if (delta >= 0x8000)		delta -= 0x10000;	      base += 2;	    }	  lineno += delta;	/* first delta is 0 */	  /* Complain if the line table overflows. Could happen	     with corrupt binaries.  */	  if (lt->nitems >= maxlines)	    {	      complain (&bad_linetable_guess_complaint, fdr_name (fh));	      break;	    }	  k = add_line (lt, lineno, l, k);	  l += count + 1;	}    }}/* Master parsing procedure for first-pass reading of file symbols   into a partial_symtab.  */static voidparse_partial_symbols (objfile, section_offsets)     struct objfile *objfile;     struct section_offsets *section_offsets;{  const bfd_size_type external_sym_size = debug_swap->external_sym_size;  const bfd_size_type external_rfd_size = debug_swap->external_rfd_size;  const bfd_size_type external_ext_size = debug_swap->external_ext_size;  void (* const swap_ext_in) PARAMS ((bfd *, PTR, EXTR *))    = debug_swap->swap_ext_in;  void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))    = debug_swap->swap_sym_in;  void (* const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *))    = debug_swap->swap_rfd_in;  int f_idx, s_idx;  HDRR *hdr = &debug_info->symbolic_header;  /* Running pointers */  FDR *fh;  char *ext_out;  char *ext_out_end;  EXTR *ext_block;  register EXTR *ext_in;  EXTR *ext_in_end;  SYMR sh;  struct partial_symtab *pst;  int textlow_not_set = 1;  int past_first_source_file = 0;  /* List of current psymtab's include files */  char **psymtab_include_list;  int includes_allocated;  int includes_used;  EXTR *extern_tab;  struct pst_map *fdr_to_pst;  /* Index within current psymtab dependency list */  struct partial_symtab **dependency_list;  int dependencies_used, dependencies_allocated;  struct cleanup *old_chain;  char *name;  enum language prev_language;  asection *text_sect;  int relocatable = 0;  /* Irix 5.2 shared libraries have a fh->adr field of zero, but     the shared libraries are prelinked at a high memory address.     We have to adjust the start address of the object file for this case,     by setting it to the start address of the first procedure in the file.     But we should do no adjustments if we are debugging a .o file, where     the text section (and fh->adr) really starts at zero.  */  text_sect = bfd_get_section_by_name (cur_bfd, ".text");  if (text_sect != NULL      && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC))    relocatable = 1;  extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack,				       sizeof (EXTR) * hdr->iextMax);  includes_allocated = 30;  includes_used = 0;  psymtab_include_list = (char **) alloca (includes_allocated *					   sizeof (char *));  next_symbol_text_func = mdebug_next_symbol_text;  dependencies_allocated = 30;  dependencies_used = 0;  dependency_list =    (struct partial_symtab **) alloca (dependencies_allocated *				       sizeof (struct partial_symtab *));  last_source_file = NULL;  /*   * Big plan:   *   * Only parse the Local and External symbols, and the Relative FDR.   * Fixup enough of the loader symtab to be able to use it.   * Allocate space only for the file's portions we need to   * look at. (XXX)   */  max_gdbinfo = 0;  max_glevel = MIN_GLEVEL;  /* Allocate the map FDR -> PST.     Minor hack: -O3 images might claim some global data belongs     to FDR -1. We`ll go along with that */  fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst);  old_chain = make_cleanup (free, fdr_to_pst);  fdr_to_pst++;  {    struct partial_symtab *pst = new_psymtab ("", objfile, section_offsets);    fdr_to_pst[-1].pst = pst;    FDR_IDX (pst) = -1;  }  /* Allocate the global pending list.  */  pending_list =    ((struct mdebug_pending **)     obstack_alloc (&objfile->psymbol_obstack,		    hdr->ifdMax * sizeof (struct mdebug_pending *)));  memset ((PTR) pending_list, 0,	  hdr->ifdMax * sizeof (struct mdebug_pending *));  /* Pass 0 over external syms: swap them in.  */  ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR));  make_cleanup (free, ext_block);  ext_out = (char *) debug_info->external_ext;  ext_out_end = ext_out + hdr->iextMax * external_ext_size;  ext_in = ext_block;  for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++)    (*swap_ext_in) (cur_bfd, ext_out, ext_in);  /* Pass 1 over external syms: Presize and partition the list */  ext_in = ext_block;  ext_in_end = ext_in + hdr->iextMax;  for (; ext_in < ext_in_end; ext_in++)    {      /* See calls to complain below.  */      if (ext_in->ifd >= -1	  && ext_in->ifd < hdr->ifdMax	  && ext_in->asym.iss >= 0	  && ext_in->asym.iss < hdr->issExtMax)	fdr_to_pst[ext_in->ifd].n_globals++;    }  /* Pass 1.5 over files:  partition out global symbol space */  s_idx = 0;  for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++)    {      fdr_to_pst[f_idx].globals_offset = s_idx;      s_idx += fdr_to_pst[f_idx].n_globals;      fdr_to_pst[f_idx].n_globals = 0;    }  /* Pass 2 over external syms: fill in external symbols */  ext_in = ext_block;  ext_in_end = ext_in + hdr->iextMax;  for (; ext_in < ext_in_end; ext_in++)    {      enum minimal_symbol_type ms_type = mst_text;      CORE_ADDR svalue = ext_in->asym.value;      /* The Irix 5 native tools seem to sometimes generate bogus	 external symbols.  */      if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax)	{	  complain (&bad_ext_ifd_complaint, ext_in->ifd, hdr->ifdMax);	  continue;	}      if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax)	{	  complain (&bad_ext_iss_complaint, ext_in->asym.iss,		    hdr->issExtMax);	  continue;	}      extern_tab[fdr_to_pst[ext_in->ifd].globals_offset		 + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in;      if (ext_in->asym.sc == scUndefined || ext_in->asym.sc == scSUndefined	  || ext_in->asym.sc == scNil)	continue;      name = debug_info->ssext + ext_in->asym.iss;      switch (ext_in->asym.st)	{	case stProc:	  svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);	  break;	case stStaticProc:	  ms_type = mst_file_text;	  svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);	  break;	case stGlobal:          if (ext_in->asym.sc == scCommon || ext_in->asym.sc == scSCommon)	    {	      /* The value of a common symbol is its size, not its address.		 Ignore it.  */	      continue;	    }          else if (ext_in->asym.sc == scData	      || ext_in->asym.sc == scSData	      || ext_in->asym.sc == scRData	      || ext_in->asym.sc == scPData	      || ext_in->asym.sc == scXData)	    {	      ms_type = mst_data;	      svalue += ANOFFSET (section_offsets, SECT_OFF_DATA);	    }	  else	    {	      ms_type = mst_bss;	      svalue += ANOFFSET (section_offsets, SECT_OFF_BSS);	    }	  break;	case stLabel:          if (ext_in->asym.sc == scAbs)	    ms_type = mst_abs;          else if (ext_in->asym.sc == scText          	   || ext_in->asym.sc == scInit          	   || ext_in->asym.sc == scFini)	    {	      ms_type = mst_file_text;	      svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);	    }          else if (ext_in->asym.sc == scData		   || ext_in->asym.sc == scSData		   || ext_in->asym.sc == scRData		   || ext_in->asym.sc == scPData		   || ext_in->asym.sc == scXData)	    {	      ms_type = mst_file_data;	      svalue += ANOFFSET (section_offsets, SECT_OFF_DATA);	    }	  else	    {	      ms_type = mst_file_bss;	      svalue += ANOFFSET (section_offsets, SECT_OFF_BSS);	    }	  break;	case stLocal:	case stNil:	  /* The alpha has the section start addresses in stLocal symbols	     whose name starts with a `.'. Skip those but complain for all	     other stLocal symbols.	     Irix6 puts the section start addresses in stNil symbols, skip	     those too.  */	  if (name[0] == '.')	    continue;	  /* Fall through.  */	default:	  ms_type = mst_unknown;	  complain (&unknown_ext_complaint, name);	}      prim_record_minimal_symbol (name, svalue, ms_type, objfile);    }  /* Pass 3 over files, over local syms: fill in static symbols */  for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)    {      struct partial_symtab *save_pst;      EXTR *ext_ptr;      CORE_ADDR textlow;      cur_fdr = fh = debug_info->fdr + f_idx;      if (fh->csym == 0)	{	  fdr_to_pst[f_idx].pst = NULL;	  continue;	}      /* Determine the start address for this object file from the	 file header and relocate it, except for Irix 5.2 zero fh->adr.  */      if (fh->cpd)	{	  textlow = fh->adr;	  if (relocatable || textlow != 0)	    textlow += ANOFFSET (section_offsets, SECT_OFF_TEXT);	}      else	textlow = 0;      pst = start_psymtab_common (objfile, section_offsets,				  fdr_name (fh),				  textlow,				  objfile->global_psymbols.next,				  objfile->static_psymbols.next);      pst->read_symtab_private = ((char *)				  obstack_alloc (&objfile->psymbol_obstack,						 sizeof (struct symloc)));      memset ((PTR) pst->read_symtab_private, 0, sizeof (struct symloc));      save_pst = pst;      FDR_IDX (pst) = f_idx;      CUR_BFD (pst) = cur_bfd;      DEBUG_SWAP (pst) = debug_swap;      DEBUG_INFO (pst) = debug_info;      PENDING_LIST (pst) = pending_list;      /* The way to turn this into a symtab is to call... */      pst->read_symtab = mdebug_psymtab_to_symtab;      /* Set up language for the pst.         The language from the FDR is used if it is unambigious (e.g. cfront	 with native cc and g++ will set the language to C).	 Otherwise we have to deduce the language from the filename.	 Native ecoff has every header file in a separate FDR, so	 deduce_language_from_filename will return language_unknown for	 a header file, which is not what we want.	 But the FDRs for the header files are after the FDR for the source	 file, so we can assign the language of the source file to the	 following header files. Then we save the language in the private	 pst data so that we can reuse it when building symtabs.  */      prev_language = psymtab_language;      switch (fh->lang)	{	case langCplusplusV2:	  psymtab_language = language_cplus;	  break;	default:	  psymtab_language = deduce_language_from_filename (fdr_name (fh));	  break;	}      if (psymtab_language == language_unknown)	psymtab_language = prev_language;      PST_PRIVATE (pst)->pst_language = psymtab_language;      pst->texthigh = pst->textlow;      /* For stabs-in-ecoff files, the second symbol must be @stab.	 This symbol is emitted by mips-tfile to signal that the	 current object file uses encapsulated stabs instead of mips	 ecoff for local symbols.  (It is the second symbol because	 the first symbol is the stFile used to signal the start of a	 file). */      processing_gcc_compilation = 0;      if (fh->csym >= 2)	{	  (*swap_sym_in) (cur_bfd,			  ((char *) debug_info->external_sym			   + (fh->isymBase + 1) * external_sym_size),			  &sh);	  if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol))	    processing_gcc_compilation = 2;	}      if (processing_gcc_compilation != 0)	{	  for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)	    {	      int type_code;	      char *namestring;	      (*swap_sym_in) (cur_bfd,			      (((char *) debug_info->external_sym)			       + (fh->isymBase + cur_sdx) * external_sym_size),			      &sh);	      type_code = ECOFF_UNMARK_STAB (sh.index);	      if (!ECOFF_IS_STAB (&sh))		{		  if (sh.st == stProc || sh.st == stStaticProc)		    {		      CORE_ADDR procaddr;		      long isym;			      sh.value += ANOFFSET (section_offsets, SECT_OFF_TEXT);		      if (sh.st == stStaticProc)			{			  namestring = debug_info->ss + fh->issBase + sh.iss;			  prim_record_minimal_symbol_and_info (namestring,							       sh.value,							       mst_file_text,							       NULL,							       SECT_OFF_TEXT,							       objfile);			}		      procaddr = sh.value;		      isym = AUX_GET_ISYM (fh->fBigendian,					   (debug_info->external_aux					    + fh->iauxBase					    + sh.index));		      (*swap_sym_in) (cur_bfd,				      ((char *) debug_info->external_sym				       + ((fh->isymBase + isym - 1)					  * external_sym_size)),				      &sh);		      if (sh.st == stEnd)			{			  CORE_ADDR high = procaddr + sh.value;	      		  /* Kludge for Irix 5.2 zero fh->adr.  */			  if (!relocatable			      && (pst->textlow == 0 || procaddr < pst->textlow))			    pst->textlow = procaddr;			  if (high > pst->texthigh)			    pst->texthigh = high;			}		    }		  else if (sh.st == stStatic)		    {		      switch (sh.sc)			{			case scUndefined:			case scSUndefined:			case scNil:			case scAbs:			  break;			case scData:			case scSData:			case scRData:			case scPData:			case scXData:			  namestring = debug_info->ss + fh->issBase + sh.iss;		          sh.value += ANOFFSET (section_offsets, SECT_OFF_DATA);			  prim_record_minimal_symbol_and_info (namestring,							       sh.value,							       mst_file_data,							       NULL,							       SECT_OFF_DATA,							       objfile);			  break;			default:			  namestring = debug_info->ss + fh->issBase + sh.iss;		          sh.value += ANOFFSET (section_offsets, SECT_OFF_BSS);			  prim_record_minimal_symbol_and_info (namestring,							       sh.value,							       mst_file_bss,							       NULL,							       SECT_OFF_BSS,							       objfile);			  break;			}		    }		  continue;		}#define SET_NAMESTRING() \  namestring = debug_info->ss + fh->issBase + sh.iss#define CUR_SYMBOL_TYPE type_code#define CUR_SYMBOL_VALUE sh.value#define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\  pst = save_pst#define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set) (void)0#define HANDLE_RBRAC(val) \  if ((val) > save_pst->texthigh) save_pst->texthigh = (val);#include "partial-stab.h"	    }	}      else	{	  for (cur_sdx = 0; cur_sdx < fh->csym;)	    {	      char *name;	      enum address_class class;	      (*swap_sym_in) (cur_bfd,			      ((char *) debug_info->external_sym			       + ((fh->isymBase + cur_sdx)				  * external_sym_size)),			      &sh);	      if (ECOFF_IS_STAB (&sh))		{		  cur_sdx++;		  continue;		}	      /* Non absolute static symbols go into the minimal table.  */	      if (sh.sc == scUndefined || sh.sc == scSUndefined		  || sh.sc == scNil		  || (sh.index == indexNil		      && (sh.st != stStatic || sh.sc == scAbs)))		{		  /* FIXME, premature? */		  cur_sdx++;		  continue;		}	      name = debug_info->ss + fh->issBase + sh.iss;	      switch (sh.sc)		{		case scText:		case scRConst:		  /* The value of a stEnd symbol is the displacement from the		     corresponding start symbol value, do not relocate it.  */		  if (sh.st != stEnd)		    sh.value += ANOFFSET (section_offsets, SECT_OFF_TEXT);		  break;		case scData:		case scSData:		case scRData:		case scPData:		case scXData:		  sh.value += ANOFFSET (section_offsets, SECT_OFF_DATA);		  break;		case scBss:		case scSBss:		  sh.value += ANOFFSET (section_offsets, SECT_OFF_BSS);		  break;		}	      switch (sh.st)		{		  CORE_ADDR high;		  CORE_ADDR procaddr;		  int new_sdx;		case stStaticProc:		  prim_record_minimal_symbol_and_info (name, sh.value,						       mst_file_text, NULL,						       SECT_OFF_TEXT, objfile);		  /* FALLTHROUGH */		case stProc:		  /* Usually there is a local and a global stProc symbol		     for a function. This means that the function name		     has already been entered into the mimimal symbol table		     while processing the global symbols in pass 2 above.		     One notable exception is the PROGRAM name from		     f77 compiled executables, it is only put out as		     local stProc symbol, and a global MAIN__ stProc symbol		     points to it.  It doesn't matter though, as gdb is		     still able to find the PROGRAM name via the partial		     symbol table, and the MAIN__ symbol via the minimal		     symbol table.  */		  if (sh.st == stProc)		    add_psymbol_to_list (name, strlen (name),					 VAR_NAMESPACE, LOC_BLOCK,					 &objfile->global_psymbols,					 sh.value, 0, psymtab_language, objfile);		  else		    add_psymbol_to_list (name, strlen (name),					 VAR_NAMESPACE, LOC_BLOCK,					 &objfile->static_psymbols,					 sh.value, 0, psymtab_language, objfile);		  /* Skip over procedure to next one. */		  if (sh.index >= hdr->iauxMax)		    {		      /* Should not happen, but does when cross-compiling			   with the MIPS compiler.  FIXME -- pull later.  */		      complain (&index_complaint, name);		      new_sdx = cur_sdx + 1;	/* Don't skip at all */		    }		  else		    new_sdx = AUX_GET_ISYM (fh->fBigendian,					    (debug_info->external_aux					     + fh->iauxBase					     + sh.index));		  procaddr = sh.value;		  if (new_sdx <= cur_sdx)		    {		      /* This should not happen either... FIXME.  */		      complain (&aux_index_complaint, name);		      new_sdx = cur_sdx + 1;	/* Don't skip backward */		    }		  cur_sdx = new_sdx;		  (*swap_sym_in) (cur_bfd,				  ((char *) debug_info->external_sym				   + ((fh->isymBase + cur_sdx - 1)				      * external_sym_size)),				  &sh);		  if (sh.st != stEnd)		    continue;		  /* Kludge for Irix 5.2 zero fh->adr.  */		  if (!relocatable		      && (pst->textlow == 0 || procaddr < pst->textlow))		    pst->textlow = procaddr;		  high = procaddr + sh.value;		  if (high > pst->texthigh)		    pst->texthigh = high;		  continue;		case stStatic:	/* Variable */		  if (sh.sc == scData		      || sh.sc == scSData		      || sh.sc == scRData		      || sh.sc == scPData		      || sh.sc == scXData)		    prim_record_minimal_symbol_and_info (name, sh.value,							 mst_file_data, NULL,							 SECT_OFF_DATA,							 objfile);		  else		    prim_record_minimal_symbol_and_info (name, sh.value,							 mst_file_bss, NULL,							 SECT_OFF_BSS,							 objfile);		  class = LOC_STATIC;		  break;		case stIndirect:/* Irix5 forward declaration */		  /* Skip forward declarations from Irix5 cc */		  goto skip;		case stTypedef:/* Typedef */		  /* Skip typedefs for forward declarations and opaque		     structs from alpha and mips cc.  */		  if (sh.iss == 0 || has_opaque_xref (fh, &sh))		    goto skip;		  class = LOC_TYPEDEF;		  break;		case stConstant:	/* Constant decl */		  class = LOC_CONST;		  break;		case stUnion:		case stStruct:		case stEnum:		case stBlock:	/* { }, str, un, enum*/		  /* Do not create a partial symbol for cc unnamed aggregates		     and gcc empty aggregates. */		  if ((sh.sc == scInfo		       || sh.sc == scCommon || sh.sc == scSCommon)		      && sh.iss != 0		      && sh.index != cur_sdx + 2)		    {		      add_psymbol_to_list (name, strlen (name),					   STRUCT_NAMESPACE, LOC_TYPEDEF,					   &objfile->static_psymbols,					   sh.value, 0,					   psymtab_language, objfile);		    }		  handle_psymbol_enumerators (objfile, fh, sh.st, sh.value);		  /* Skip over the block */		  new_sdx = sh.index;		  if (new_sdx <= cur_sdx)		    {		      /* This happens with the Ultrix kernel. */		      complain (&block_index_complaint, name);		      new_sdx = cur_sdx + 1;	/* Don't skip backward */		    }		  cur_sdx = new_sdx;		  continue;		case stFile:	/* File headers */		case stLabel:	/* Labels */		case stEnd:	/* Ends of files */		  goto skip;		case stLocal:	/* Local variables */		  /* Normally these are skipped because we skip over		     all blocks we see.  However, these can occur		     as visible symbols in a .h file that contains code. */		  goto skip;		default:		  /* Both complaints are valid:  one gives symbol name,		     the other the offending symbol type.  */		  complain (&unknown_sym_complaint, name);		  complain (&unknown_st_complaint, sh.st);		  cur_sdx++;		  continue;		}	      /* Use this gdb symbol */	      add_psymbol_to_list (name, strlen (name),				   VAR_NAMESPACE, class,				   &objfile->static_psymbols, sh.value,				   0, psymtab_language, objfile);	    skip:	      cur_sdx++;	/* Go to next file symbol */	    }	  /* Now do enter the external symbols. */	  ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset];	  cur_sdx = fdr_to_pst[f_idx].n_globals;	  PST_PRIVATE (save_pst)->extern_count = cur_sdx;	  PST_PRIVATE (save_pst)->extern_tab = ext_ptr;	  for (; --cur_sdx >= 0; ext_ptr++)	    {	      enum address_class class;	      SYMR *psh;	      char *name;	      CORE_ADDR svalue;	      if (ext_ptr->ifd != f_idx)		abort ();	      psh = &ext_ptr->asym;	      /* Do not add undefined symbols to the partial symbol table.  */	      if (psh->sc == scUndefined || psh->sc == scSUndefined		  || psh->sc == scNil)		continue;	      svalue = psh->value;	      switch (psh->sc)		{		case scText:		case scRConst:		  svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);		  break;		case scData:		case scSData:		case scRData:		case scPData:		case scXData:		  svalue += ANOFFSET (section_offsets, SECT_OFF_DATA);		  break;		case scBss:		case scSBss:		  svalue += ANOFFSET (section_offsets, SECT_OFF_BSS);		  break;		}	      switch (psh->st)		{		case stNil:		  /* These are generated for static symbols in .o files,		     ignore them.  */		  continue;		case stProc:		case stStaticProc:		  /* External procedure symbols have been entered		     into the minimal symbol table in pass 2 above.		     Ignore them, as parse_external will ignore them too.  */		  continue;		case stLabel:		  class = LOC_LABEL;		  break;		default:		  complain (&unknown_ext_complaint,			    debug_info->ssext + psh->iss);		  /* Fall through, pretend it's global.  */		case stGlobal:		  /* Global common symbols are resolved by the runtime loader,		     ignore them.  */		  if (psh->sc == scCommon || psh->sc == scSCommon)		    continue;		  class = LOC_STATIC;		  break;		}	      name = debug_info->ssext + psh->iss;	      add_psymbol_to_list (name, strlen (name),				   VAR_NAMESPACE, class,				   &objfile->global_psymbols,				   0, svalue,				   psymtab_language, objfile);	    }	}      /* Link pst to FDR. end_psymtab returns NULL if the psymtab was	 empty and put on the free list.  */      fdr_to_pst[f_idx].pst = end_psymtab (save_pst,					   psymtab_include_list, includes_used,					   -1, save_pst->texthigh,					   dependency_list, dependencies_used, textlow_not_set);      includes_used = 0;      dependencies_used = 0;      if (objfile->ei.entry_point >= save_pst->textlow &&	  objfile->ei.entry_point < save_pst->texthigh)	{	  objfile->ei.entry_file_lowpc = save_pst->textlow;	  objfile->ei.entry_file_highpc = save_pst->texthigh;	}      /* The objfile has its functions reordered if this partial symbol	 table overlaps any other partial symbol table.	 We cannot assume a reordered objfile if a partial symbol table	 is contained within another partial symbol table, as partial symbol	 tables for include files with executable code are contained	 within the partial symbol table for the including source file,	 and we do not want to flag the objfile reordered for these cases.	 This strategy works well for Irix-5.2 shared libraries, but we	 might have to use a more elaborate (and slower) algorithm for	 other cases.  */      save_pst = fdr_to_pst[f_idx].pst;      if (save_pst != NULL	  && save_pst->textlow != 0	  && !(objfile->flags & OBJF_REORDERED))	{	  ALL_OBJFILE_PSYMTABS (objfile, pst)	    {	      if (save_pst != pst		  && save_pst->textlow >= pst->textlow		  && save_pst->textlow < pst->texthigh		  && save_pst->texthigh > pst->texthigh)		{		  objfile->flags |= OBJF_REORDERED;		  break;		}	    }	}    }  /* Now scan the FDRs for dependencies */  for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)    {      fh = f_idx + debug_info->fdr;      pst = fdr_to_pst[f_idx].pst;      if (pst == (struct partial_symtab *)NULL)	continue;      /* This should catch stabs-in-ecoff. */      if (fh->crfd <= 1)	continue;      /* Skip the first file indirect entry as it is a self dependency	 for source files or a reverse .h -> .c dependency for header files.  */      pst->number_of_dependencies = 0;      pst->dependencies =	((struct partial_symtab **)	 obstack_alloc (&objfile->psymbol_obstack,			((fh->crfd - 1)			 * sizeof (struct partial_symtab *))));      for (s_idx = 1; s_idx < fh->crfd; s_idx++)	{	  RFDT rh;	  (*swap_rfd_in) (cur_bfd,			  ((char *) debug_info->external_rfd			   + (fh->rfdBase + s_idx) * external_rfd_size),			  &rh);	  if (rh < 0 || rh >= hdr->ifdMax)	    {	      complain (&bad_file_number_complaint, rh);	      continue;	    }	  /* Skip self dependencies of header files.  */	  if (rh == f_idx)	    continue;	  /* Do not add to dependeny list if psymtab was empty.  */	  if (fdr_to_pst[rh].pst == (struct partial_symtab *)NULL)	    continue;	  pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst;	}    }  /* Remove the dummy psymtab created for -O3 images above, if it is     still empty, to enable the detection of stripped executables.  */  if (objfile->psymtabs->next == NULL      && objfile->psymtabs->number_of_dependencies == 0      && objfile->psymtabs->n_global_syms == 0      && objfile->psymtabs->n_static_syms == 0)    objfile->psymtabs = NULL;  do_cleanups (old_chain);}/* If the current psymbol has an enumerated type, we need to add   all the the enum constants to the partial symbol table.  */static voidhandle_psymbol_enumerators (objfile, fh, stype, svalue)     struct objfile *objfile;     FDR *fh;     int stype;     CORE_ADDR svalue;{  const bfd_size_type external_sym_size = debug_swap->external_sym_size;  void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))    = debug_swap->swap_sym_in;  char *ext_sym = ((char *) debug_info->external_sym		  + ((fh->isymBase + cur_sdx + 1) * external_sym_size));  SYMR sh;  TIR tir;  switch (stype)    {    case stEnum:      break;    case stBlock:      /* It is an enumerated type if the next symbol entry is a stMember	 and its auxiliary index is indexNil or its auxiliary entry	 is a plain btNil or btVoid.	 Alpha cc -migrate enums are recognized by a zero index and	 a zero symbol value.  */      (*swap_sym_in) (cur_bfd, ext_sym, &sh);      if (sh.st != stMember)	return;      if (sh.index == indexNil	  || (sh.index == 0 && svalue == 0))	break;      (*debug_swap->swap_tir_in) (fh->fBigendian,				  &(debug_info->external_aux				    + fh->iauxBase + sh.index)->a_ti,				  &tir);      if ((tir.bt != btNil && tir.bt != btVoid) || tir.tq0 != tqNil)	return;      break;    default:      return;    }  for (;;)    {      char *name;      (*swap_sym_in) (cur_bfd, ext_sym, &sh);      if (sh.st != stMember)	break;      name = debug_info->ss + cur_fdr->issBase + sh.iss;      /* Note that the value doesn't matter for enum constants	 in psymtabs, just in symtabs.  */      add_psymbol_to_list (name, strlen (name),			   VAR_NAMESPACE, LOC_CONST,			   &objfile->static_psymbols, 0,			   0, psymtab_language, objfile);      ext_sym += external_sym_size;    }}static char *mdebug_next_symbol_text (objfile)     struct objfile *objfile;	/* argument objfile is currently unused */{  SYMR sh;  cur_sdx++;  (*debug_swap->swap_sym_in) (cur_bfd,			      ((char *) debug_info->external_sym			       + ((cur_fdr->isymBase + cur_sdx)				  * debug_swap->external_sym_size)),			      &sh);  return debug_info->ss + cur_fdr->issBase + sh.iss;}/* Ancillary function to psymtab_to_symtab().  Does all the work   for turning the partial symtab PST into a symtab, recurring   first on all dependent psymtabs.  The argument FILENAME is   only passed so we can see in debug stack traces what file   is being read.   This function has a split personality, based on whether the   symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.   The flow of control and even the memory allocation differs.  FIXME.  */static voidpsymtab_to_symtab_1 (pst, filename)     struct partial_symtab *pst;     char *filename;{  bfd_size_type external_sym_size;  bfd_size_type external_pdr_size;  void (*swap_sym_in) PARAMS ((bfd *, PTR, SYMR *));  void (*swap_pdr_in) PARAMS ((bfd *, PTR, PDR *));  int i;  struct symtab *st;  FDR *fh;  struct linetable *lines;  CORE_ADDR lowest_pdr_addr = 0;  if (pst->readin)    return;  pst->readin = 1;  /* Read in all partial symbtabs on which this one is dependent.     NOTE that we do have circular dependencies, sigh.  We solved     that by setting pst->readin before this point.  */  for (i = 0; i < pst->number_of_dependencies; i++)    if (!pst->dependencies[i]->readin)      {	/* Inform about additional files to be read in.  */	if (info_verbose)	  {	    fputs_filtered (" ", gdb_stdout);	    wrap_here ("");	    fputs_filtered ("and ", gdb_stdout);	    wrap_here ("");	    printf_filtered ("%s...",			     pst->dependencies[i]->filename);	    wrap_here ("");	/* Flush output */	    gdb_flush (gdb_stdout);	  }	/* We only pass the filename for debug purposes */	psymtab_to_symtab_1 (pst->dependencies[i],			     pst->dependencies[i]->filename);      }  /* Do nothing if this is a dummy psymtab.  */  if (pst->n_global_syms == 0 && pst->n_static_syms == 0      && pst->textlow == 0 && pst->texthigh == 0)    return;  /* Now read the symbols for this symtab */  cur_bfd = CUR_BFD (pst);  debug_swap = DEBUG_SWAP (pst);  debug_info = DEBUG_INFO (pst);  pending_list = PENDING_LIST (pst);  external_sym_size = debug_swap->external_sym_size;  external_pdr_size = debug_swap->external_pdr_size;  swap_sym_in = debug_swap->swap_sym_in;  swap_pdr_in = debug_swap->swap_pdr_in;  current_objfile = pst->objfile;  cur_fd = FDR_IDX (pst);  fh = ((cur_fd == -1)	? (FDR *) NULL	: debug_info->fdr + cur_fd);  cur_fdr = fh;  /* See comment in parse_partial_symbols about the @stabs sentinel. */  processing_gcc_compilation = 0;  if (fh != (FDR *) NULL && fh->csym >= 2)    {      SYMR sh;      (*swap_sym_in) (cur_bfd,		      ((char *) debug_info->external_sym		       + (fh->isymBase + 1) * external_sym_size),		      &sh);      if (STREQ (debug_info->ss + fh->issBase + sh.iss,		 stabs_symbol))	{	  /* We indicate that this is a GCC compilation so that certain	     features will be enabled in stabsread/dbxread.  */	  processing_gcc_compilation = 2;	}    }  if (processing_gcc_compilation != 0)    {      /* This symbol table contains stabs-in-ecoff entries.  */      /* Parse local symbols first */      if (fh->csym <= 2)	/* FIXME, this blows psymtab->symtab ptr */	{	  current_objfile = NULL;	  return;	}      for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)	{	  SYMR sh;	  char *name;	  CORE_ADDR valu;	  (*swap_sym_in) (cur_bfd,			  (((char *) debug_info->external_sym)			   + (fh->isymBase + cur_sdx) * external_sym_size),			  &sh);	  name = debug_info->ss + fh->issBase + sh.iss;	  valu = sh.value;	  if (ECOFF_IS_STAB (&sh))	    {	      int type_code = ECOFF_UNMARK_STAB (sh.index);	      /* We should never get non N_STAB symbols here, but they		 should be harmless, so keep process_one_symbol from		 complaining about them.  */	      if (type_code & N_STAB)		{		  process_one_symbol (type_code, 0, valu, name,				      pst->section_offsets, pst->objfile);		}	      if (type_code == N_FUN)		{		  /* Make up special symbol to contain		     procedure specific info */		  struct mips_extra_func_info *e =		    ((struct mips_extra_func_info *)		     obstack_alloc (&current_objfile->symbol_obstack,				    sizeof (struct mips_extra_func_info)));		  struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME);		  memset ((PTR) e, 0, sizeof (struct mips_extra_func_info));		  SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;		  SYMBOL_CLASS (s) = LOC_CONST;		  SYMBOL_TYPE (s) = mdebug_type_void;		  SYMBOL_VALUE (s) = (long) e;		  e->pdr.framereg = -1;		  add_symbol_to_list (s, &local_symbols);		}	    }	  else if (sh.st == stLabel)	    {	      if (sh.index == indexNil)		{		  /* This is what the gcc2_compiled and __gnu_compiled_*		     show up as.  So don't complain.  */		  ;		}	      else		{		  /* Handle encoded stab line number. */		  valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT);		  record_line (current_subfile, sh.index, valu);		}	    }	  else if (sh.st == stProc || sh.st == stStaticProc		   || sh.st == stStatic || sh.st == stEnd)	    /* These are generated by gcc-2.x, do not complain */	    ;	  else	    complain (&stab_unknown_complaint, name);	}      st = end_symtab (pst->texthigh, pst->objfile, SECT_OFF_TEXT);      end_stabs ();      /* Sort the symbol table now, we are done adding symbols to it.	 We must do this before parse_procedure calls lookup_symbol.  */      sort_symtab_syms (st);      /* There used to be a call to sort_blocks here, but this should not	 be necessary for stabs symtabs.  And as sort_blocks modifies the	 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,	 it did the wrong thing if the first procedure in a file was	 generated via asm statements.  */      /* Fill in procedure info next.  */      if (fh->cpd > 0)	{	  PDR *pr_block;	  struct cleanup *old_chain;	  char *pdr_ptr;	  char *pdr_end;	  PDR *pdr_in;	  PDR *pdr_in_end;	  pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));	  old_chain = make_cleanup (free, pr_block);	  pdr_ptr = ((char *) debug_info->external_pdr		     + fh->ipdFirst * external_pdr_size);	  pdr_end = pdr_ptr + fh->cpd * external_pdr_size;	  pdr_in = pr_block;	  for (;	       pdr_ptr < pdr_end;	       pdr_ptr += external_pdr_size, pdr_in++)	    {	      (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);	      /* Determine lowest PDR address, the PDRs are not always		 sorted.  */	      if (pdr_in == pr_block)		lowest_pdr_addr = pdr_in->adr;	      else if (pdr_in->adr < lowest_pdr_addr)		lowest_pdr_addr = pdr_in->adr;	    }	  pdr_in = pr_block;	  pdr_in_end = pdr_in + fh->cpd;	  for (; pdr_in < pdr_in_end; pdr_in++)	    parse_procedure (pdr_in, st, lowest_pdr_addr, pst);	  do_cleanups (old_chain);	}    }  else    {      /* This symbol table contains ordinary ecoff entries.  */      int f_max;      int maxlines;      EXTR *ext_ptr;      /* How many symbols will we need */      /* FIXME, this does not count enum values. */      f_max = pst->n_global_syms + pst->n_static_syms;      if (fh == 0)	{	  maxlines = 0;	  st = new_symtab ("unknown", f_max, 0, pst->objfile);	}      else	{	  f_max += fh->csym + fh->cpd;	  maxlines = 2 * fh->cline;	  st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile);	  /* The proper language was already determined when building	     the psymtab, use it.  */	  st->language = PST_PRIVATE (pst)->pst_language;	}      psymtab_language = st->language;      lines = LINETABLE (st);      /* Get a new lexical context */      push_parse_stack ();      top_stack->cur_st = st;      top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st),						STATIC_BLOCK);      BLOCK_START (top_stack->cur_block) = pst->textlow;      BLOCK_END (top_stack->cur_block) = 0;      top_stack->blocktype = stFile;      top_stack->maxsyms = 2 * f_max;      top_stack->cur_type = 0;      top_stack->procadr = 0;      top_stack->numargs = 0;      found_ecoff_debugging_info = 0;      if (fh)	{	  char *sym_ptr;	  char *sym_end;	  /* Parse local symbols first */	  sym_ptr = ((char *) debug_info->external_sym		     + fh->isymBase * external_sym_size);	  sym_end = sym_ptr + fh->csym * external_sym_size;	  while (sym_ptr < sym_end)	    {	      SYMR sh;	      int c;	      (*swap_sym_in) (cur_bfd, sym_ptr, &sh);	      c = parse_symbol (&sh,				debug_info->external_aux + fh->iauxBase,				sym_ptr, fh->fBigendian, pst->section_offsets);	      sym_ptr += c * external_sym_size;	    }	  /* Linenumbers.  At the end, check if we can save memory.	     parse_lines has to look ahead an arbitrary number of PDR	     structures, so we swap them all first.  */	  if (fh->cpd > 0)	    {	      PDR *pr_block;	      struct cleanup *old_chain;	      char *pdr_ptr;	      char *pdr_end;	      PDR *pdr_in;	      PDR *pdr_in_end;	      pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));	      old_chain = make_cleanup (free, pr_block);	      pdr_ptr = ((char *) debug_info->external_pdr			 + fh->ipdFirst * external_pdr_size);	      pdr_end = pdr_ptr + fh->cpd * external_pdr_size;	      pdr_in = pr_block;	      for (;		   pdr_ptr < pdr_end;		   pdr_ptr += external_pdr_size, pdr_in++)		{		  (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);		  /* Determine lowest PDR address, the PDRs are not always		     sorted.  */		  if (pdr_in == pr_block)		    lowest_pdr_addr = pdr_in->adr;		  else if (pdr_in->adr < lowest_pdr_addr)		    lowest_pdr_addr = pdr_in->adr;		}	      parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr);	      if (lines->nitems < fh->cline)		lines = shrink_linetable (lines);	      /* Fill in procedure info next.  */	      pdr_in = pr_block;	      pdr_in_end = pdr_in + fh->cpd;	      for (; pdr_in < pdr_in_end; pdr_in++)		parse_procedure (pdr_in, 0, lowest_pdr_addr, pst);	      do_cleanups (old_chain);	    }	}      LINETABLE (st) = lines;      /* .. and our share of externals.	 XXX use the global list to speed up things here. how?	 FIXME, Maybe quit once we have found the right number of ext's? */      top_stack->cur_st = st;      top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),						GLOBAL_BLOCK);      top_stack->blocktype = stFile;      top_stack->maxsyms	= (debug_info->symbolic_header.isymMax	   + debug_info->symbolic_header.ipdMax	   + debug_info->symbolic_header.iextMax);      ext_ptr = PST_PRIVATE (pst)->extern_tab;      for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++)	parse_external (ext_ptr, fh->fBigendian, pst->section_offsets);      /* If there are undefined symbols, tell the user.	 The alpha has an undefined symbol for every symbol that is	 from a shared library, so tell the user only if verbose is on.  */      if (info_verbose && n_undef_symbols)	{	  printf_filtered ("File %s contains %d unresolved references:",			   st->filename, n_undef_symbols);	  printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",			   n_undef_vars, n_undef_procs, n_undef_labels);	  n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0;	}      pop_parse_stack ();      st->primary = 1;      /* Sort the symbol table now, we are done adding symbols to it.*/      sort_symtab_syms (st);      sort_blocks (st);    }  /* Now link the psymtab and the symtab.  */  pst->symtab = st;  current_objfile = NULL;}/* Ancillary parsing procedures. *//* Return 1 if the symbol pointed to by SH has a cross reference   to an opaque aggregate type, else 0.  */static inthas_opaque_xref (fh, sh)     FDR *fh;     SYMR *sh;{  TIR tir;  union aux_ext *ax;  RNDXR rn[1];  unsigned int rf;  if (sh->index == indexNil)    return 0;  ax = debug_info->external_aux + fh->iauxBase + sh->index;  (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir);  if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum)    return 0;  ax++;  (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn);  if (rn->rfd == 0xfff)    rf = AUX_GET_ISYM (fh->fBigendian, ax + 1);  else    rf = rn->rfd;  if (rf != -1)    return 0;  return 1;}/* Lookup the type at relative index RN.  Return it in TPP   if found and in any event come up with its name PNAME.   BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).   Return value says how many aux symbols we ate. */static intcross_ref (fd, ax, tpp, type_code, pname, bigend, sym_name)     int fd;     union aux_ext *ax;     struct type **tpp;     enum type_code type_code;	/* Use to alloc new type if none is found. */     char **pname;     int bigend;     char *sym_name;{  RNDXR rn[1];  unsigned int rf;  int result = 1;  FDR *fh;  char *esh;  SYMR sh;  int xref_fd;  struct mdebug_pending *pend;  *tpp = (struct type *)NULL;  (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);  /* Escape index means 'the next one' */  if (rn->rfd == 0xfff)    {      result++;      rf = AUX_GET_ISYM (bigend, ax + 1);    }  else    {      rf = rn->rfd;    }  /* mips cc uses a rf of -1 for opaque struct definitions.     Set TYPE_FLAG_STUB for these types so that check_typedef will     resolve them if the struct gets defined in another compilation unit.  */  if (rf == -1)    {      *pname = "<undefined>";      *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);      TYPE_FLAGS (*tpp) |= TYPE_FLAG_STUB;      return result;    }  /* mips cc uses an escaped rn->index of 0 for struct return types     of procedures that were compiled without -g. These will always remain     undefined.  */  if (rn->rfd == 0xfff && rn->index == 0)    {      *pname = "<undefined>";      return result;    }  /* Find the relative file descriptor and the symbol in it.  */  fh = get_rfd (fd, rf);  xref_fd = fh - debug_info->fdr;  if (rn->index >= fh->csym)    {      /* File indirect entry is corrupt.  */      *pname = "<illegal>";      complain (&bad_rfd_entry_complaint,		sym_name, xref_fd, rn->index);      return result;    }  /* If we have processed this symbol then we left a forwarding     pointer to the type in the pending list.  If not, we`ll put     it in a list of pending types, to be processed later when     the file will be.  In any event, we collect the name for the     type here.  */  esh = ((char *) debug_info->external_sym	 + ((fh->isymBase + rn->index)	    * debug_swap->external_sym_size));  (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh);  /* Make sure that this type of cross reference can be handled.  */  if ((sh.sc != scInfo       || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect	   && sh.st != stStruct && sh.st != stUnion	   && sh.st != stEnum))      && (sh.st != stBlock || (sh.sc != scCommon && sh.sc != scSCommon)))    {      /* File indirect entry is corrupt.  */      *pname = "<illegal>";      complain (&bad_rfd_entry_complaint,		sym_name, xref_fd, rn->index);      return result;    }  *pname = debug_info->ss + fh->issBase + sh.iss;  pend = is_pending_symbol (fh, esh);  if (pend)    *tpp = pend->t;  else    {      /* We have not yet seen this type.  */      if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect)	{	  TIR tir;	  /* alpha cc puts out a stTypedef with a sh.iss of zero for	     two cases:	     a) forward declarations of structs/unions/enums which are not		defined in this compilation unit.		For these the type will be void. This is a bad design decision		as cross referencing across compilation units is impossible		due to the missing name.	     b) forward declarations of structs/unions/enums/typedefs which		are defined later in this file or in another file in the same		compilation unit. Irix5 cc uses a stIndirect symbol for this.		Simply cross reference those again to get the true type.	     The forward references are not entered in the pending list and	     in the symbol table.  */	  (*debug_swap->swap_tir_in) (bigend,				      &(debug_info->external_aux					+ fh->iauxBase + sh.index)->a_ti,				      &tir);	  if (tir.tq0 != tqNil)	    complain (&illegal_forward_tq0_complaint, sym_name);	  switch (tir.bt)	    {	    case btVoid:	      *tpp = init_type (type_code, 0, 0, (char *) NULL,				current_objfile);    	      *pname = "<undefined>";	      break;	    case btStruct:	    case btUnion:	    case btEnum:	      cross_ref (xref_fd,			 (debug_info->external_aux			  + fh->iauxBase + sh.index + 1),			 tpp, type_code, pname,			 fh->fBigendian, sym_name);	      break;	    case btTypedef:	      /* Follow a forward typedef. This might recursively		 call cross_ref till we get a non typedef'ed type.		 FIXME: This is not correct behaviour, but gdb currently		 cannot handle typedefs without type copying. Type		 copying is impossible as we might have mutual forward		 references between two files and the copied type would not		 get filled in when we later parse its definition.  */	      *tpp = parse_type (xref_fd,				 debug_info->external_aux + fh->iauxBase,				 sh.index,				 (int *)NULL,				 fh->fBigendian,				 debug_info->ss + fh->issBase + sh.iss);	      add_pending (fh, esh, *tpp);	      break;	    default:	      complain (&illegal_forward_bt_complaint, tir.bt, sym_name);	      *tpp = init_type (type_code, 0, 0, (char *) NULL,				current_objfile);	      break;	    }	  return result;	}      else if (sh.st == stTypedef)	{	  /* Parse the type for a normal typedef. This might recursively call	     cross_ref till we get a non typedef'ed type.	     FIXME: This is not correct behaviour, but gdb currently	     cannot handle typedefs without type copying. But type copying is	     impossible as we might have mutual forward references between	     two files and the copied type would not get filled in when	     we later parse its definition.   */	  *tpp = parse_type (xref_fd,			     debug_info->external_aux + fh->iauxBase,			     sh.index,			     (int *)NULL,			     fh->fBigendian,			     debug_info->ss + fh->issBase + sh.iss);	}      else	{	  /* Cross reference to a struct/union/enum which is defined	     in another file in the same compilation unit but that file	     has not been parsed yet.	     Initialize the type only, it will be filled in when	     it's definition is parsed.  */	  *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);	}      add_pending (fh, esh, *tpp);    }  /* We used one auxent normally, two if we got a "next one" rf. */  return result;}/* Quick&dirty lookup procedure, to avoid the MI ones that require   keeping the symtab sorted */static struct symbol *mylookup_symbol (name, block, namespace, class)     char *name;     register struct block *block;     namespace_enum namespace;     enum address_class class;{  register int bot, top, inc;  register struct symbol *sym;  bot = 0;  top = BLOCK_NSYMS (block);  inc = name[0];  while (bot < top)    {      sym = BLOCK_SYM (block, bot);      if (SYMBOL_NAME (sym)[0] == inc	  && SYMBOL_NAMESPACE (sym) == namespace	  && SYMBOL_CLASS (sym) == class	  && strcmp (SYMBOL_NAME (sym), name) == 0)	return sym;      bot++;    }  block = BLOCK_SUPERBLOCK (block);  if (block)    return mylookup_symbol (name, block, namespace, class);  return 0;}/* Add a new symbol S to a block B.   Infrequently, we will need to reallocate the block to make it bigger.   We only detect this case when adding to top_stack->cur_block, since   that's the only time we know how big the block is.  FIXME.  */static voidadd_symbol (s, b)     struct symbol *s;     struct block *b;{  int nsyms = BLOCK_NSYMS (b)++;  struct block *origb;  struct parse_stack *stackp;  if (b == top_stack->cur_block &&      nsyms >= top_stack->maxsyms)    {      complain (&block_overflow_complaint, SYMBOL_NAME (s));      /* In this case shrink_block is actually grow_block, since		   BLOCK_NSYMS(b) is larger than its current size.  */      origb = b;      b = shrink_block (top_stack->cur_block, top_stack->cur_st);      /* Now run through the stack replacing pointers to the	 original block.  shrink_block has already done this	 for the blockvector and BLOCK_FUNCTION.  */      for (stackp = top_stack; stackp; stackp = stackp->next)	{	  if (stackp->cur_block == origb)	    {	      stackp->cur_block = b;	      stackp->maxsyms = BLOCK_NSYMS (b);	    }	}    }  BLOCK_SYM (b, nsyms) = s;}/* Add a new block B to a symtab S */static voidadd_block (b, s)     struct block *b;     struct symtab *s;{  struct blockvector *bv = BLOCKVECTOR (s);  bv = (struct blockvector *) xrealloc ((PTR) bv,					(sizeof (struct blockvector)					 + BLOCKVECTOR_NBLOCKS (bv)					 * sizeof (bv->block)));  if (bv != BLOCKVECTOR (s))    BLOCKVECTOR (s) = bv;  BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b;}/* Add a new linenumber entry (LINENO,ADR) to a linevector LT.   MIPS' linenumber encoding might need more than one byte   to describe it, LAST is used to detect these continuation lines.   Combining lines with the same line number seems like a bad idea.   E.g: There could be a line number entry with the same line number after the   prologue and GDB should not ignore it (this is a better way to find   a prologue than mips_skip_prologue).   But due to the compressed line table format there are line number entries   for the same line which are needed to bridge the gap to the next   line number entry. These entries have a bogus address info with them   and we are unable to tell them from intended duplicate line number   entries.   This is another reason why -ggdb debugging format is preferable.  */static intadd_line (lt, lineno, adr, last)     struct linetable *lt;     int lineno;     CORE_ADDR adr;     int last;{  /* DEC c89 sometimes produces zero linenos which confuse gdb.     Change them to something sensible. */  if (lineno == 0)    lineno = 1;  if (last == 0)    last = -2;			/* make sure we record first line */  if (last == lineno)		/* skip continuation lines */    return lineno;  lt->item[lt->nitems].line = lineno;  lt->item[lt->nitems++].pc = adr << 2;  return lineno;}/* Sorting and reordering procedures *//* Blocks with a smaller low bound should come first */static intcompare_blocks (arg1, arg2)     const PTR arg1;     const PTR arg2;{  register int addr_diff;  struct block **b1 = (struct block **) arg1;  struct block **b2 = (struct block **) arg2;  addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));  if (addr_diff == 0)    return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1)));  return addr_diff;}/* Sort the blocks of a symtab S.   Reorder the blocks in the blockvector by code-address,   as required by some MI search routines */static voidsort_blocks (s)     struct symtab *s;{  struct blockvector *bv = BLOCKVECTOR (s);  if (BLOCKVECTOR_NBLOCKS (bv) <= 2)    {      /* Cosmetic */      if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0)	BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0;      if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0)	BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0;      return;    }  /*   * This is very unfortunate: normally all functions are compiled in   * the order they are found, but if the file is compiled -O3 things   * are very different.  It would be nice to find a reliable test   * to detect -O3 images in advance.   */  if (BLOCKVECTOR_NBLOCKS (bv) > 3)    qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),	   BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK,	   sizeof (struct block *),	   compare_blocks);  {    register CORE_ADDR high = 0;    register int i, j = BLOCKVECTOR_NBLOCKS (bv);    for (i = FIRST_LOCAL_BLOCK; i < j; i++)      if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)))	high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i));    BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high;  }  BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) =    BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK));  BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =    BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));  BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =    BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));}/* Constructor/restructor/destructor procedures *//* Allocate a new symtab for NAME.  Needs an estimate of how many symbols   MAXSYMS and linenumbers MAXLINES we'll put in it */static struct symtab *new_symtab (name, maxsyms, maxlines, objfile)     char *name;     int maxsyms;     int maxlines;     struct objfile *objfile;{  struct symtab *s = allocate_symtab (name, objfile);  LINETABLE (s) = new_linetable (maxlines);  /* All symtabs must have at least two blocks */  BLOCKVECTOR (s) = new_bvect (2);  BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms);  BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms);  BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) =    BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);  s->free_code = free_linetable;  return (s);}/* Allocate a new partial_symtab NAME */static struct partial_symtab *new_psymtab (name, objfile, section_offsets)     char *name;     struct objfile *objfile;     struct section_offsets *section_offsets;{  struct partial_symtab *psymtab;  psymtab = allocate_psymtab (name, objfile);  psymtab->section_offsets = section_offsets;  /* Keep a backpointer to the file's symbols */  psymtab->read_symtab_private = ((char *)				  obstack_alloc (&objfile->psymbol_obstack,						 sizeof (struct symloc)));  memset ((PTR) psymtab->read_symtab_private, 0, sizeof (struct symloc));  CUR_BFD (psymtab) = cur_bfd;  DEBUG_SWAP (psymtab) = debug_swap;  DEBUG_INFO (psymtab) = debug_info;  PENDING_LIST (psymtab) = pending_list;  /* The way to turn this into a symtab is to call... */  psymtab->read_symtab = mdebug_psymtab_to_symtab;  return (psymtab);}/* Allocate a linetable array of the given SIZE.  Since the struct   already includes one item, we subtract one when calculating the   proper size to allocate.  */static struct linetable *new_linetable (size)     int size;{  struct linetable *l;  size = (size - 1) * sizeof (l->item) + sizeof (struct linetable);  l = (struct linetable *) xmalloc (size);  l->nitems = 0;  return l;}/* Oops, too big. Shrink it.  This was important with the 2.4 linetables,   I am not so sure about the 3.4 ones.   Since the struct linetable already includes one item, we subtract one when   calculating the proper size to allocate.  */static struct linetable *shrink_linetable (lt)     struct linetable *lt;{  return (struct linetable *) xrealloc ((PTR) lt,					(sizeof (struct linetable)					 + ((lt->nitems - 1)					    * sizeof (lt->item))));}/* Allocate and zero a new blockvector of NBLOCKS blocks. */static struct blockvector *new_bvect (nblocks)     int nblocks;{  struct blockvector *bv;  int size;  size = sizeof (struct blockvector) + nblocks * sizeof (struct block *);  bv = (struct blockvector *) xzalloc (size);  BLOCKVECTOR_NBLOCKS (bv) = nblocks;  return bv;}/* Allocate and zero a new block of MAXSYMS symbols */static struct block *new_block (maxsyms)     int maxsyms;{  int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *);  return (struct block *) xzalloc (size);}/* Ooops, too big. Shrink block B in symtab S to its minimal size.   Shrink_block can also be used by add_symbol to grow a block.  */static struct block *shrink_block (b, s)     struct block *b;     struct symtab *s;{  struct block *new;  struct blockvector *bv = BLOCKVECTOR (s);  int i;  /* Just reallocate it and fix references to the old one */  new = (struct block *) xrealloc ((PTR) b,				   (sizeof (struct block)				    + ((BLOCK_NSYMS (b) - 1)				       * sizeof (struct symbol *))));  /* Should chase pointers to old one.  Fortunately, that`s just	   the block`s function and inferior blocks */  if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b)    SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;  for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)    if (BLOCKVECTOR_BLOCK (bv, i) == b)      BLOCKVECTOR_BLOCK (bv, i) = new;    else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b)      BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new;  return new;}/* Create a new symbol with printname NAME */static struct symbol *new_symbol (name)     char *name;{  struct symbol *s = ((struct symbol *)		      obstack_alloc (&current_objfile->symbol_obstack,				     sizeof (struct symbol)));  memset ((PTR) s, 0, sizeof (*s));  SYMBOL_NAME (s) = obsavestring (name, strlen (name),				  &current_objfile->symbol_obstack);  SYMBOL_LANGUAGE (s) = psymtab_language;  SYMBOL_INIT_DEMANGLED_NAME (s, &current_objfile->symbol_obstack);  return s;}