static void som_symfile_read (objfile, section_offsets, mainline) struct objfile *objfile; struct section_offsets *section_offsets; int mainline; { bfd *abfd = objfile->obfd; struct cleanup *back_to;  init_minimal_symbol_collection (); back_to = make_cleanup (discard_minimal_symbols, 0);    som_symtab_read (abfd, objfile, section_offsets);   stabsect_build_psymtabs (objfile, section_offsets, mainline, "$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$");   hpread_build_psymtabs (objfile, section_offsets, mainline);   install_minimal_symbols (objfile);   objfile->obj_private = NULL; do_cleanups (back_to); }    static void som_new_init (ignore) struct objfile *ignore; { stabsread_new_init (); buildsym_new_init (); }    static void som_symfile_finish (objfile) struct objfile *objfile; { if (objfile -> sym_stab_info != NULL) { mfree (objfile -> md, objfile -> sym_stab_info); } hpread_symfile_finish (objfile); }    static void som_symfile_init (objfile) struct objfile *objfile; {  objfile->flags |= OBJF_REORDERED; hpread_symfile_init (objfile); }    static struct section_offsets * som_symfile_offsets (objfile, addr) struct objfile *objfile; CORE_ADDR addr; { struct section_offsets *section_offsets; int i;  objfile->num_sections = SECT_OFF_MAX; section_offsets = (struct section_offsets *) obstack_alloc (&objfile -> psymbol_obstack, SIZEOF_SECTION_OFFSETS);   if (!som_solib_section_offsets (objfile, section_offsets)) { for (i = 0; i < SECT_OFF_MAX; i++) ANOFFSET (section_offsets, i) = addr; }  return section_offsets; }
som_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR));/* FIXME: These should really be in a common header somewhere */extern voidhpread_build_psymtabs PARAMS ((struct objfile *, struct section_offsets *, int));extern voidhpread_symfile_finish PARAMS ((struct objfile *));extern voidhpread_symfile_init PARAMS ((struct objfile *));/*LOCAL FUNCTION	som_symtab_read -- read the symbol table of a SOM fileSYNOPSIS	void som_symtab_read (bfd *abfd, struct objfile *objfile,			      struct section_offsets *section_offsets)DESCRIPTION	Given an open bfd, a base address to relocate symbols to, and a	flag that specifies whether or not this bfd is for an executable	or not (may be shared library for example), add all the global	function and data symbols to the minimal symbol table.*/static voidsom_symtab_read (abfd, objfile, section_offsets)     bfd *abfd;     struct objfile *objfile;     struct section_offsets *section_offsets;{  unsigned int number_of_symbols;  int val, dynamic;  char *stringtab;  asection *shlib_info;  struct symbol_dictionary_record *buf, *bufp, *endbufp;  char *symname;  CONST int symsize = sizeof (struct symbol_dictionary_record);  CORE_ADDR text_offset, data_offset;  text_offset = ANOFFSET (section_offsets, 0);  data_offset = ANOFFSET (section_offsets, 1);  number_of_symbols = bfd_get_symcount (abfd);  buf = alloca (symsize * number_of_symbols);  bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET);  val = bfd_read (buf, symsize * number_of_symbols, 1, abfd);  if (val != symsize * number_of_symbols)    error ("Couldn't read symbol dictionary!");  stringtab = alloca (obj_som_stringtab_size (abfd));  bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET);  val = bfd_read (stringtab, obj_som_stringtab_size (abfd), 1, abfd);  if (val != obj_som_stringtab_size (abfd))    error ("Can't read in HP string table.");  /* We need to determine if objfile is a dynamic executable (so we     can do the right thing for ST_ENTRY vs ST_CODE symbols).     There's nothing in the header which easily allows us to do     this.  The only reliable way I know of is to check for the     existance of a $SHLIB_INFO$ section with a non-zero size.  */  shlib_info = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$");  if (shlib_info)    dynamic = (bfd_section_size (objfile->obfd, shlib_info) != 0);  else    dynamic = 0;  endbufp = buf + number_of_symbols;  for (bufp = buf; bufp < endbufp; ++bufp)    {      enum minimal_symbol_type ms_type;      QUIT;      switch (bufp->symbol_scope)	{	case SS_UNIVERSAL:	case SS_EXTERNAL:	  switch (bufp->symbol_type)	    {	    case ST_SYM_EXT:	    case ST_ARG_EXT:	      continue;	    case ST_CODE:	    case ST_PRI_PROG:	    case ST_SEC_PROG:	    case ST_MILLICODE:	      symname = bufp->name.n_strx + stringtab;	      ms_type = mst_text;	      bufp->symbol_value += text_offset;#ifdef SMASH_TEXT_ADDRESS	      SMASH_TEXT_ADDRESS (bufp->symbol_value);#endif	      break;	    case ST_ENTRY:	      symname = bufp->name.n_strx + stringtab;	      /* For a dynamic executable, ST_ENTRY symbols are		 the stubs, while the ST_CODE symbol is the real		 function.  */	      if (dynamic)		ms_type = mst_solib_trampoline;	      else		ms_type = mst_text;	      bufp->symbol_value += text_offset;#ifdef SMASH_TEXT_ADDRESS	      SMASH_TEXT_ADDRESS (bufp->symbol_value);#endif	      break;	    case ST_STUB:	      symname = bufp->name.n_strx + stringtab;	      ms_type = mst_solib_trampoline;	      bufp->symbol_value += text_offset;#ifdef SMASH_TEXT_ADDRESS	      SMASH_TEXT_ADDRESS (bufp->symbol_value);#endif	      break;	    case ST_DATA:	      symname = bufp->name.n_strx + stringtab;	      bufp->symbol_value += data_offset;	      ms_type = mst_data;	      break;	    default:	      continue;	    }	  break;#if 0	  /* SS_GLOBAL and SS_LOCAL are two names for the same thing (!).  */	case SS_GLOBAL:#endif	case SS_LOCAL:	  switch (bufp->symbol_type)	    {	    case ST_SYM_EXT:	    case ST_ARG_EXT:	      continue;	    case ST_CODE:	      symname = bufp->name.n_strx + stringtab;	      ms_type = mst_file_text;	      bufp->symbol_value += text_offset;#ifdef SMASH_TEXT_ADDRESS	      SMASH_TEXT_ADDRESS (bufp->symbol_value);#endif	    check_strange_names:	      /* Utah GCC 2.5, FSF GCC 2.6 and later generate correct local		 label prefixes for stabs, constant data, etc.  So we need		 only filter out L$ symbols which are left in due to		 limitations in how GAS generates SOM relocations.		 When linking in the HPUX C-library the HP linker has		 the nasty habit of placing section symbols from the literal		 subspaces in the middle of the program's text.  Filter		 those out as best we can.  Check for first and last character		 being '$'. 		 And finally, the newer HP compilers emit crud like $PIC_foo$N		 in some circumstance (PIC code I guess).  It's also claimed		 that they emit D$ symbols too.  What stupidity.  */	      if ((symname[0] == 'L' && symname[1] == '$')		  || (symname[0] == '$' && symname[strlen(symname) - 1] == '$')		  || (symname[0] == 'D' && symname[1] == '$')		  || (strncmp (symname, "$PIC", 4) == 0))		continue;	      break;	    case ST_PRI_PROG:	    case ST_SEC_PROG:	    case ST_MILLICODE:	      symname = bufp->name.n_strx + stringtab;	      ms_type = mst_file_text;	      bufp->symbol_value += text_offset;#ifdef SMASH_TEXT_ADDRESS	      SMASH_TEXT_ADDRESS (bufp->symbol_value);#endif	      break;	    case ST_ENTRY:	      symname = bufp->name.n_strx + stringtab;	      /* For a dynamic executable, ST_ENTRY symbols are		 the stubs, while the ST_CODE symbol is the real		 function.  */	      if (dynamic)		ms_type = mst_solib_trampoline;	      else		ms_type = mst_file_text;	      bufp->symbol_value += text_offset;#ifdef SMASH_TEXT_ADDRESS	      SMASH_TEXT_ADDRESS (bufp->symbol_value);#endif	      break;	    case ST_STUB:	      symname = bufp->name.n_strx + stringtab;	      ms_type = mst_solib_trampoline;	      bufp->symbol_value += text_offset;#ifdef SMASH_TEXT_ADDRESS	      SMASH_TEXT_ADDRESS (bufp->symbol_value);#endif	      break;	    case ST_DATA:	      symname = bufp->name.n_strx + stringtab;	      bufp->symbol_value += data_offset;	      ms_type = mst_file_data;	      goto check_strange_names;	    default:	      continue;	    }	  break;	/* This can happen for common symbols when -E is passed to the	   final link.  No idea _why_ that would make the linker force	   common symbols to have an SS_UNSAT scope, but it does.	   This also happens for weak symbols, but their type is	   ST_DATA.  */	case SS_UNSAT:	  switch (bufp->symbol_type)	    {	      case ST_STORAGE:	      case ST_DATA:		symname = bufp->name.n_strx + stringtab;		bufp->symbol_value += data_offset;		ms_type = mst_data;		break;	      default:		continue;	    }	  break;	default:	  continue;	}      if (bufp->name.n_strx > obj_som_stringtab_size (abfd))	error ("Invalid symbol data; bad HP string table offset: %d",	       bufp->name.n_strx);      prim_record_minimal_symbol (symname, bufp->symbol_value, ms_type, 				  objfile);    }}/* Scan and build partial symbols for a symbol file.   We have been initialized by a call to som_symfile_init, which    currently does nothing.   SECTION_OFFSETS is a set of offsets to apply to relocate the symbols   in each section.  This is ignored, as it isn't needed for SOM.   MAINLINE is true if we are reading the main symbol   table (as opposed to a shared lib or dynamically loaded file).   This function only does the minimum work necessary for letting the   user "name" things symbolically; it does not read the entire symtab.   Instead, it reads the external and static symbols and puts them in partial   symbol tables.  When more extensive information is requested of a   file, the corresponding partial symbol table is mutated into a full   fledged symbol table by going back and reading the symbols   for real.   We look for sections with specific names, to tell us what debug   format to look for:  FIXME!!!   somstab_build_psymtabs() handles STABS symbols.   Note that SOM files have a "minimal" symbol table, which is vaguely   reminiscent of a COFF symbol table, but has only the minimal information   necessary for linking.  We process this also, and use the information to   build gdb's minimal symbol table.  This gives us some minimal debugging   capability even for files compiled without -g.  */static voidsom_symfile_read (objfile, section_offsets, mainline)     struct objfile *objfile;     struct section_offsets *section_offsets;     int mainline;{  bfd *abfd = objfile->obfd;  struct cleanup *back_to;  init_minimal_symbol_collection ();  back_to = make_cleanup (discard_minimal_symbols, 0);  /* Process the normal SOM symbol table first. */  som_symtab_read (abfd, objfile, section_offsets);  /* Now read information from the stabs debug sections.  */  stabsect_build_psymtabs (objfile, section_offsets, mainline,			   "$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$");  /* Now read the native debug information.  */  hpread_build_psymtabs (objfile, section_offsets, mainline);  /* Install any minimal symbols that have been collected as the current     minimal symbols for this objfile.  */  install_minimal_symbols (objfile);  /* Force hppa-tdep.c to re-read the unwind descriptors.  */  objfile->obj_private = NULL;  do_cleanups (back_to);}/* Initialize anything that needs initializing when a completely new symbol   file is specified (not just adding some symbols from another file, e.g. a   shared library).   We reinitialize buildsym, since we may be reading stabs from a SOM file.  */static voidsom_new_init (ignore)     struct objfile *ignore;{  stabsread_new_init ();  buildsym_new_init ();}/* Perform any local cleanups required when we are done with a particular   objfile.  I.E, we are in the process of discarding all symbol information   for an objfile, freeing up all memory held for it, and unlinking the   objfile struct from the global list of known objfiles. */static voidsom_symfile_finish (objfile)     struct objfile *objfile;{  if (objfile -> sym_stab_info != NULL)    {      mfree (objfile -> md, objfile -> sym_stab_info);    }  hpread_symfile_finish (objfile);}/* SOM specific initialization routine for reading symbols.  */static voidsom_symfile_init (objfile)     struct objfile *objfile;{  /* SOM objects may be reordered, so set OBJF_REORDERED.  If we     find this causes a significant slowdown in gdb then we could     set it in the debug symbol readers only when necessary.  */  objfile->flags |= OBJF_REORDERED;  hpread_symfile_init (objfile);}/* SOM specific parsing routine for section offsets.   Plain and simple for now.  */static struct section_offsets *som_symfile_offsets (objfile, addr)     struct objfile *objfile;     CORE_ADDR addr;{  struct section_offsets *section_offsets;  int i;  objfile->num_sections = SECT_OFF_MAX;  section_offsets = (struct section_offsets *)    obstack_alloc (&objfile -> psymbol_obstack, SIZEOF_SECTION_OFFSETS);  /* First see if we're a shared library.  If so, get the section     offsets from the library, else get them from addr.  */  if (!som_solib_section_offsets (objfile, section_offsets))    {      for (i = 0; i < SECT_OFF_MAX; i++)	ANOFFSET (section_offsets, i) = addr;    }  return section_offsets;}