Initial revision

1 files changed, 0 insertions, 2018 deletions

diff --git a/gdb/coffread.c b/gdb/coffread.c
deleted file mode 100644
index a657cf398d..0000000000
--- a/gdb/coffread.c
+++ /dev/null
@@ -1,2018 +0,0 @@
-/* Read coff symbol tables and convert to internal format, for GDB.
-   Design and support routines derived from dbxread.c, and UMAX COFF
-   specific routines written 9/1/87 by David D. Johnson, Brown University.
-   Revised 11/27/87 ddj@cs.brown.edu
-   Copyright (C) 1987, 1988, 1989 Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-GDB is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 1, or (at your option)
-any later version.
-
-GDB is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GDB; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
-
-#include <stdio.h>
-#include "defs.h"
-#include "param.h"
-#ifdef COFF_FORMAT
-#include "symtab.h"
-
-#ifdef USG
-#include <sys/types.h>
-#include <fcntl.h>
-#endif
-
-#include <a.out.h>
-#include <obstack.h>
-#include <sys/param.h>
-#include <sys/file.h>
-
-static void add_symbol_to_list ();
-static void read_coff_symtab ();
-static void patch_opaque_types ();
-static struct type *decode_function_type ();
-static struct type *decode_type ();
-static struct type *decode_base_type ();
-static struct type *read_enum_type ();
-static struct type *read_struct_type ();
-static void finish_block ();
-static struct blockvector *make_blockvector ();
-static struct symbol *process_coff_symbol ();
-static int init_stringtab ();
-static void free_stringtab ();
-static char *getfilename ();
-static char *getsymname ();
-static int init_lineno ();
-static void enter_linenos ();
-
-extern int fclose ();
-extern void free_all_symtabs ();
-extern void free_all_psymtabs ();
-
-
-/* Name of source file whose symbol data we are now processing.
-   This comes from a symbol named ".file".  */
-
-static char *last_source_file;
-
-/* Core address of start and end of text of current source file.
-   This comes from a ".text" symbol where x_nlinno > 0.  */
-
-static CORE_ADDR cur_src_start_addr;
-static CORE_ADDR cur_src_end_addr;
-
-/* Core address of the end of the first object file.  */
-static CORE_ADDR first_object_file_end;
-
-/* End of the text segment of the executable file,
-   as found in the symbol _etext.  */
-
-static CORE_ADDR end_of_text_addr;
-
-/* The addresses of the symbol table stream and number of symbols
-   of the object file we are reading (as copied into core).  */
-
-static FILE *nlist_stream_global;
-static int nlist_nsyms_global;
-
-/* The file, a.out  and text section headers of the symbol file */
-
-static FILHDR file_hdr;
-static SCNHDR text_hdr;
-static AOUTHDR aout_hdr;
-
-/* The index in the symbol table of the last coff symbol that was processed.  */
-
-static int symnum;
-
-/* Vector of types defined so far, indexed by their coff symnum.  */
-
-static struct typevector *type_vector;
-
-/* Number of elements allocated for type_vector currently.  */
-
-static int type_vector_length;
-
-/* Vector of line number information.  */
-
-static struct linetable *line_vector;
-
-/* Index of next entry to go in line_vector_index.  */
-
-static int line_vector_index;
-
-/* Last line number recorded in the line vector.  */
-
-static int prev_line_number;
-
-/* Number of elements allocated for line_vector currently.  */
-
-static int line_vector_length;
-
-/* Chain of typedefs of pointers to empty struct/union types.
-   They are chained thru the SYMBOL_VALUE.  */
-
-#define HASHSIZE 127
-static struct symbol *opaque_type_chain[HASHSIZE];
-
-/* Record the symbols defined for each context in a list.
-   We don't create a struct block for the context until we
-   know how long to make it.  */
-
-struct pending
-{
-  struct pending *next;
-  struct symbol *symbol;
-};
-
-/* Here are the three lists that symbols are put on.  */
-
-struct pending *file_symbols;	/* static at top level, and types */
-
-struct pending *global_symbols;	/* global functions and variables */
-
-struct pending *local_symbols;	/* everything local to lexical context */
-
-/* List of unclosed lexical contexts
-   (that will become blocks, eventually).  */
-
-struct context_stack
-{
-  struct context_stack *next;
-  struct pending *locals;
-  struct pending_block *old_blocks;
-  struct symbol *name;
-  CORE_ADDR start_addr;
-  int depth;
-};
-
-struct context_stack *context_stack;
-
-/* Nonzero if within a function (so symbols should be local,
-   if nothing says specifically).  */
-
-int within_function;
-
-/* List of blocks already made (lexical contexts already closed).
-   This is used at the end to make the blockvector.  */
-
-struct pending_block
-{
-  struct pending_block *next;
-  struct block *block;
-};
-
-struct pending_block *pending_blocks;
-
-extern CORE_ADDR startup_file_start;	/* From blockframe.c */
-extern CORE_ADDR startup_file_end;	/* From blockframe.c */
-
-/* File name symbols were loaded from.  */
-
-static char *symfile;
-
-/* Look up a coff type-number index.  Return the address of the slot
-   where the type for that index is stored.
-   The type-number is in INDEX. 
-
-   This can be used for finding the type associated with that index
-   or for associating a new type with the index.  */
-
-static struct type **
-coff_lookup_type (index)
-     register int index;
-{
-  if (index >= type_vector_length)
-    {
-      int old_vector_length = type_vector_length;
-
-      type_vector_length *= 2;
-      if (type_vector_length < index) {
-	type_vector_length = index * 2;
-      }
-      type_vector = (struct typevector *)
-	xrealloc (type_vector, sizeof (struct typevector)
-				+ type_vector_length * sizeof (struct type *));
-      bzero (&type_vector->type[ old_vector_length ],
-	     (type_vector_length - old_vector_length) * sizeof(struct type *));
-    }
-  return &type_vector->type[index];
-}
-
-/* Make sure there is a type allocated for type number index
-   and return the type object.
-   This can create an empty (zeroed) type object.  */
-
-static struct type *
-coff_alloc_type (index)
-     int index;
-{
-  register struct type **type_addr = coff_lookup_type (index);
-  register struct type *type = *type_addr;
-
-  /* If we are referring to a type not known at all yet,
-     allocate an empty type for it.
-     We will fill it in later if we find out how.  */
-  if (type == 0)
-    {
-      type = (struct type *) obstack_alloc (symbol_obstack,
-					    sizeof (struct type));
-      bzero (type, sizeof (struct type));
-      *type_addr = type;
-    }
-  return type;
-}
-
-/* maintain the lists of symbols and blocks */
-
-/* Add a symbol to one of the lists of symbols.  */
-static void
-add_symbol_to_list (symbol, listhead)
-     struct symbol *symbol;
-     struct pending **listhead;
-{
-  register struct pending *link
-    = (struct pending *) xmalloc (sizeof (struct pending));
-
-  link->next = *listhead;
-  link->symbol = symbol;
-  *listhead = link;
-}
-
-/* Take one of the lists of symbols and make a block from it.
-   Put the block on the list of pending blocks.  */
-
-static void
-finish_block (symbol, listhead, old_blocks, start, end)
-     struct symbol *symbol;
-     struct pending **listhead;
-     struct pending_block *old_blocks;
-     CORE_ADDR start, end;
-{
-  register struct pending *next, *next1;
-  register struct block *block;
-  register struct pending_block *pblock;
-  struct pending_block *opblock;
-  register int i;
-
-  /* Count the length of the list of symbols.  */
-
-  for (next = *listhead, i = 0; next; next = next->next, i++);
-
-  block = (struct block *)
-	    obstack_alloc (symbol_obstack, sizeof (struct block) + (i - 1) * sizeof (struct symbol *));
-
-  /* Copy the symbols into the block.  */
-
-  BLOCK_NSYMS (block) = i;
-  for (next = *listhead; next; next = next->next)
-    BLOCK_SYM (block, --i) = next->symbol;
-
-  BLOCK_START (block) = start;
-  BLOCK_END (block) = end;
-  BLOCK_SUPERBLOCK (block) = 0;	/* Filled in when containing block is made */
-
-  /* Put the block in as the value of the symbol that names it.  */
-
-  if (symbol)
-    {
-      SYMBOL_BLOCK_VALUE (symbol) = block;
-      BLOCK_FUNCTION (block) = symbol;
-    }
-  else
-    BLOCK_FUNCTION (block) = 0;
-
-  /* Now free the links of the list, and empty the list.  */
-
-  for (next = *listhead; next; next = next1)
-    {
-      next1 = next->next;
-      free (next);
-    }
-  *listhead = 0;
-
-  /* Install this block as the superblock
-     of all blocks made since the start of this scope
-     that don't have superblocks yet.  */
-
-  opblock = 0;
-  for (pblock = pending_blocks; pblock != old_blocks; pblock = pblock->next)
-    {
-      if (BLOCK_SUPERBLOCK (pblock->block) == 0)
-	BLOCK_SUPERBLOCK (pblock->block) = block;
-      opblock = pblock;
-    }
-
-  /* Record this block on the list of all blocks in the file.
-     Put it after opblock, or at the beginning if opblock is 0.
-     This puts the block in the list after all its subblocks.  */
-
-  pblock = (struct pending_block *) xmalloc (sizeof (struct pending_block));
-  pblock->block = block;
-  if (opblock)
-    {
-      pblock->next = opblock->next;
-      opblock->next = pblock;
-    }
-  else
-    {
-      pblock->next = pending_blocks;
-      pending_blocks = pblock;
-    }
-}
-
-static struct blockvector *
-make_blockvector ()
-{
-  register struct pending_block *next, *next1;
-  register struct blockvector *blockvector;
-  register int i;
-
-  /* Count the length of the list of blocks.  */
-
-  for (next = pending_blocks, i = 0; next; next = next->next, i++);
-
-  blockvector = (struct blockvector *)
-		  obstack_alloc (symbol_obstack, sizeof (struct blockvector) + (i - 1) * sizeof (struct block *));
-
-  /* Copy the blocks into the blockvector.
-     This is done in reverse order, which happens to put
-     the blocks into the proper order (ascending starting address).
-     finish_block has hair to insert each block into the list
-     after its subblocks in order to make sure this is true.  */
-
-  BLOCKVECTOR_NBLOCKS (blockvector) = i;
-  for (next = pending_blocks; next; next = next->next)
-    BLOCKVECTOR_BLOCK (blockvector, --i) = next->block;
-
-  /* Now free the links of the list, and empty the list.  */
-
-  for (next = pending_blocks; next; next = next1)
-    {
-      next1 = next->next;
-      free (next);
-    }
-  pending_blocks = 0;
-
-  return blockvector;
-}
-
-/* Manage the vector of line numbers.  */
-
-static
-record_line (line, pc)
-     int line;
-     CORE_ADDR pc;
-{
-  struct linetable_entry *e;
-  /* Make sure line vector is big enough.  */
-
-  if (line_vector_index + 2 >= line_vector_length)
-    {
-      line_vector_length *= 2;
-      line_vector = (struct linetable *)
-	xrealloc (line_vector, sizeof (struct linetable)
-		  + (line_vector_length
-		     * sizeof (struct linetable_entry)));
-    }
-
-  e = line_vector->item + line_vector_index++;
-  e->line = line; e->pc = pc;
-}
-
-/* Start a new symtab for a new source file.
-   This is called when a COFF ".file" symbol is seen;
-   it indicates the start of data for one original source file.  */
-
-static void
-start_symtab ()
-{
-  file_symbols = 0;
-  global_symbols = 0;
-  context_stack = 0;
-  within_function = 0;
-  last_source_file = 0;
-
-  /* Initialize the source file information for this file.  */
-
-  line_vector_index = 0;
-  line_vector_length = 1000;
-  prev_line_number = -2;	/* Force first line number to be explicit */
-  line_vector = (struct linetable *)
-    xmalloc (sizeof (struct linetable)
-	     + line_vector_length * sizeof (struct linetable_entry));
-}
-
-/* Save the vital information for use when closing off the current file.
-   NAME is the file name the symbols came from, START_ADDR is the first
-   text address for the file, and SIZE is the number of bytes of text.  */
-
-static void
-complete_symtab (name, start_addr, size)
-    char *name;
-    CORE_ADDR start_addr;
-    unsigned int size;
-{
-  last_source_file = savestring (name, strlen (name));
-  cur_src_start_addr = start_addr;
-  cur_src_end_addr = start_addr + size;
-
-  if (aout_hdr.entry < cur_src_end_addr
-      && aout_hdr.entry >= cur_src_start_addr)
-    {
-      startup_file_start = cur_src_start_addr;
-      startup_file_end = cur_src_end_addr;
-    }
-}
-
-/* Finish the symbol definitions for one main source file,
-   close off all the lexical contexts for that file
-   (creating struct block's for them), then make the
-   struct symtab for that file and put it in the list of all such. */
-
-static void
-end_symtab ()
-{
-  register struct symtab *symtab;
-  register struct context_stack *cstk;
-  register struct blockvector *blockvector;
-  register struct linetable *lv;
-
-  /* Finish the lexical context of the last function in the file.  */
-
-  if (context_stack)
-    {
-      cstk = context_stack;
-      context_stack = 0;
-      /* Make a block for the local symbols within.  */
-      finish_block (cstk->name, &local_symbols, cstk->old_blocks,
-		    cstk->start_addr, cur_src_end_addr);
-      free (cstk);
-    }
-
-  /* Ignore a file that has no functions with real debugging info.  */
-  if (pending_blocks == 0 && file_symbols == 0 && global_symbols == 0)
-    {
-      free (line_vector);
-      line_vector = 0;
-      line_vector_length = -1;
-      last_source_file = 0;
-      return;
-    }
-
-  /* Create the two top-level blocks for this file.  */
-  finish_block (0, &file_symbols, 0, cur_src_start_addr, cur_src_end_addr);
-  finish_block (0, &global_symbols, 0, cur_src_start_addr, cur_src_end_addr);
-
-  /* Create the blockvector that points to all the file's blocks.  */
-  blockvector = make_blockvector ();
-
-  /* Now create the symtab object for this source file.  */
-  symtab = (struct symtab *) xmalloc (sizeof (struct symtab));
-  symtab->free_ptr = 0;
-
-  /* Fill in its components.  */
-  symtab->blockvector = blockvector;
-  symtab->free_code = free_linetable;
-  symtab->filename = last_source_file;
-  lv = line_vector;
-  lv->nitems = line_vector_index;
-  symtab->linetable = (struct linetable *)
-    xrealloc (lv, (sizeof (struct linetable)
-		   + lv->nitems * sizeof (struct linetable_entry)));
-  symtab->nlines = 0;
-  symtab->line_charpos = 0;
-
-  /* Link the new symtab into the list of such.  */
-  symtab->next = symtab_list;
-  symtab_list = symtab;
-
-  /* Reinitialize for beginning of new file. */
-  line_vector = 0;
-  line_vector_length = -1;
-  last_source_file = 0;
-}
-
-/* Accumulate the misc functions in bunches of 127.
-   At the end, copy them all into one newly allocated structure.  */
-
-#define MISC_BUNCH_SIZE 127
-
-struct misc_bunch
-{
-  struct misc_bunch *next;
-  struct misc_function contents[MISC_BUNCH_SIZE];
-};
-
-/* Bunch currently being filled up.
-   The next field points to chain of filled bunches.  */
-
-static struct misc_bunch *misc_bunch;
-
-/* Number of slots filled in current bunch.  */
-
-static int misc_bunch_index;
-
-/* Total number of misc functions recorded so far.  */
-
-static int misc_count;
-
-static void
-init_misc_functions ()
-{
-  misc_count = 0;
-  misc_bunch = 0;
-  misc_bunch_index = MISC_BUNCH_SIZE;
-}
-
-static void
-record_misc_function (name, address)
-     char *name;
-     CORE_ADDR address;
-{
-  register struct misc_bunch *new;
-
-  if (misc_bunch_index == MISC_BUNCH_SIZE)
-    {
-      new = (struct misc_bunch *) xmalloc (sizeof (struct misc_bunch));
-      misc_bunch_index = 0;
-      new->next = misc_bunch;
-      misc_bunch = new;
-    }
-  misc_bunch->contents[misc_bunch_index].name = savestring (name, strlen (name));
-  misc_bunch->contents[misc_bunch_index].address = address;
-  misc_bunch->contents[misc_bunch_index].type = mf_unknown;
-  misc_bunch_index++;
-  misc_count++;
-}
-
-/* if we see a function symbol, we do record_misc_function.
- * however, if it turns out the next symbol is '.bf', then
- * we call here to undo the misc definition
- */
-static void
-unrecord_misc_function ()
-{
-  if (misc_bunch_index == 0)
-    error ("Internal error processing symbol table, at symbol %d.",
-	   symnum);
-  misc_bunch_index--;
-  misc_count--;
-}
-
-
-static int
-compare_misc_functions (fn1, fn2)
-     struct misc_function *fn1, *fn2;
-{
-  /* Return a signed result based on unsigned comparisons
-     so that we sort into unsigned numeric order.  */
-  if (fn1->address < fn2->address)
-    return -1;
-  if (fn1->address > fn2->address)
-    return 1;
-  return 0;
-}
-
-static void
-discard_misc_bunches ()
-{
-  register struct misc_bunch *next;
-
-  while (misc_bunch)
-    {
-      next = misc_bunch->next;
-      free (misc_bunch);
-      misc_bunch = next;
-    }
-}
-
-static void
-condense_misc_bunches ()
-{
-  register int i, j;
-  register struct misc_bunch *bunch;
-#ifdef NAMES_HAVE_UNDERSCORE
-  int offset = 1;
-#else
-  int offset = 0;
-#endif
-
-  misc_function_vector
-    = (struct misc_function *)
-      xmalloc (misc_count * sizeof (struct misc_function));
-
-  j = 0;
-  bunch = misc_bunch;
-  while (bunch)
-    {
-      for (i = 0; i < misc_bunch_index; i++)
-	{
-	  register char *tmp;
-
-	  misc_function_vector[j] = bunch->contents[i];
-	  tmp = misc_function_vector[j].name;
-	  misc_function_vector[j].name = (tmp[0] == '_' ? tmp + offset : tmp);
-	  j++;
-	}
-      bunch = bunch->next;
-      misc_bunch_index = MISC_BUNCH_SIZE;
-    }
-
-  misc_function_count = j;
-
-  /* Sort the misc functions by address.  */
-
-  qsort (misc_function_vector, j, sizeof (struct misc_function),
-	 compare_misc_functions);
-}
-
-/* Call sort_syms to sort alphabetically
-   the symbols of each block of each symtab.  */
-
-static int
-compare_symbols (s1, s2)
-     struct symbol **s1, **s2;
-{
-  /* Names that are less should come first.  */
-  register int namediff = strcmp (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2));
-  if (namediff != 0) return namediff;
-  /* For symbols of the same name, registers should come first.  */
-  return ((SYMBOL_CLASS (*s2) == LOC_REGISTER)
-	  - (SYMBOL_CLASS (*s1) == LOC_REGISTER));
-}
-
-static void
-sort_syms ()
-{
-  register struct symtab *s;
-  register int i, nbl;
-  register struct blockvector *bv;
-  register struct block *b;
-
-  for (s = symtab_list; s; s = s->next)
-    {
-      bv = BLOCKVECTOR (s);
-      nbl = BLOCKVECTOR_NBLOCKS (bv);
-      for (i = 0; i < nbl; i++)
-	{
-	  b = BLOCKVECTOR_BLOCK (bv, i);
-	  if (BLOCK_SHOULD_SORT (b))
-		  qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b),
-			 sizeof (struct symbol *), compare_symbols);
-	}
-    }
-}
-
-/* This is the symbol-file command.  Read the file, analyze its symbols,
-   and add a struct symtab to symtab_list.  */
-
-void
-symbol_file_command (name)
-     char *name;
-{
-  int desc;
-  int num_symbols;
-  int num_sections;
-  int symtab_offset;
-  extern void close ();
-  register int val;
-  struct cleanup *old_chain;
-
-  dont_repeat ();
-
-  if (name == 0)
-    {
-      if (symtab_list && !query ("Discard symbol table? ", 0))
-	error ("Not confirmed.");
-      if (symfile)
-	free (symfile);
-      symfile = 0;
-      free_all_symtabs ();
-      return;
-    }
-
-  name = tilde_expand (name);
-  make_cleanup (free, name);
-
-  if (symtab_list && !query ("Load new symbol table from \"%s\"? ", name))
-    error ("Not confirmed.");
-
-  if (symfile)
-    free (symfile);
-  symfile = 0;
-
-  {
-    char *absolute_name;
-
-    desc = openp (getenv ("PATH"), 1, name, O_RDONLY, 0, &absolute_name);
-    if (desc < 0)
-      perror_with_name (name);
-    else
-      name = absolute_name;
-  }
-
-  old_chain = make_cleanup (close, desc);
-  make_cleanup (free_current_contents, &name);
-
-  if ((num_symbols = read_file_hdr (desc, &file_hdr)) < 0)
-    error ("File \"%s\" not in executable format.", name);
-
-  /* If an a.out header is present, read it in.  If not (e.g. a .o file)
-     deal with its absence.  */
-  if (file_hdr.f_opthdr == 0
-      || read_aout_hdr (desc, &aout_hdr, file_hdr.f_opthdr) < 0)
-    {
-      /* We will not actually be able to run code, since backtraces would
-	 fly off the bottom of the stack (there is no way to reliably
-	 detect bottom of stack), but that's fine since the kernel won't
-	 run something without an a.out header anyway.  Passive examination
-	 of .o files is one place this might make sense.  */
-      /* ~0 will not be in any file.  */
-      aout_hdr.entry = ~0;
-      /* set the startup file to be an empty range.  */
-      startup_file_start = 0;
-      startup_file_end = 0;
-    }
-
-  if (num_symbols == 0)
-    {
-      free_all_symtabs ();
-      error ("%s does not have a symbol-table.\n", name);
-    }
-
-  printf ("Reading symbol data from %s...", name);
-  fflush (stdout);
-
-  /* Throw away the old symbol table.  */
-
-  free_all_symtabs ();
-  free_all_psymtabs ();		/* Make sure that partial_symtab_list */
-				/* is 0 also. */
-
-  num_sections = file_hdr.f_nscns;
-  symtab_offset = file_hdr.f_symptr;
-
-  if (read_section_hdr (desc, _TEXT, &text_hdr, num_sections,
-			file_hdr.f_opthdr) < 0)
-    error ("\"%s\": can't read text section header", name);
-
-  /* Read the line number table, all at once.  */
-
-  val = init_lineno (desc, text_hdr.s_lnnoptr, text_hdr.s_nlnno);
-  if (val < 0)
-    error ("\"%s\": error reading line numbers\n", name);
-
-  /* Now read the string table, all at once.  */
-
-  val = init_stringtab (desc, symtab_offset + num_symbols * SYMESZ);
-  if (val < 0)
-    {
-      free_all_symtabs ();
-      printf ("\"%s\": can't get string table", name);
-      fflush (stdout);
-      return;
-    }
-  make_cleanup (free_stringtab, 0);
-
-  /* Position to read the symbol table.  Do not read it all at once. */
-  val = lseek (desc, (long)symtab_offset, 0);
-  if (val < 0)
-    perror_with_name (name);
-
-  init_misc_functions ();
-  make_cleanup (discard_misc_bunches, 0);
-
-  /* Now that the executable file is positioned at symbol table,
-     process it and define symbols accordingly.  */
-
-  read_coff_symtab (desc, num_symbols);
-
-  patch_opaque_types ();
-
-  /* Sort symbols alphabetically within each block.  */
-
-  sort_syms ();
-
-  /* Go over the misc functions and install them in vector.  */
-
-  condense_misc_bunches ();
-
-  /* Don't allow char * to have a typename (else would get caddr_t.)  */
-
-  TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0;
-
-  /* Make a default for file to list.  */
-
-  select_source_symtab (0);
-
-  symfile = savestring (name, strlen (name));
-
-  do_cleanups (old_chain);
-
-  printf ("done.\n");
-  fflush (stdout);
-}
-
-/* Return name of file symbols were loaded from, or 0 if none..  */
-
-char *
-get_sym_file ()
-{
-  return symfile;
-}
-
-/* Simplified internal version of coff symbol table information */
-
-struct coff_symbol {
-  char *c_name;
-  int c_symnum;		/* symbol number of this entry */
-  int c_nsyms;		/* 1 if syment only, 2 if syment + auxent */
-  long c_value;
-  int c_sclass;
-  int c_secnum;
-  unsigned int c_type;
-};
-
-/* Given pointers to a symbol table in coff style exec file,
-   analyze them and create struct symtab's describing the symbols.
-   NSYMS is the number of symbols in the symbol table.
-   We read them one at a time using read_one_sym ().  */
-
-static void
-read_coff_symtab (desc, nsyms)
-     int desc;
-     int nsyms;
-{
-  int newfd;			/* Avoid multiple closes on same desc */
-  FILE *stream; 
-  register struct context_stack *new;
-  struct coff_symbol coff_symbol;
-  register struct coff_symbol *cs = &coff_symbol;
-  static SYMENT main_sym;
-  static AUXENT main_aux;
-  struct coff_symbol fcn_cs_saved;
-  static SYMENT fcn_sym_saved;
-  static AUXENT fcn_aux_saved;
-
-  int num_object_files = 0;
-  int next_file_symnum = -1;
-
-  /* Name of the current file.  */
-  char *filestring = "";
-  int depth;
-  int fcn_first_line;
-  int fcn_last_line;
-  int fcn_start_addr;
-  long fcn_line_ptr;
-  struct cleanup *old_chain;
-
-
-  newfd = dup (desc);
-  if (newfd == -1)
-    fatal ("Too many open files");
-  stream = fdopen (newfd, "r");
-
-  old_chain = make_cleanup (free_all_symtabs, 0);
-  make_cleanup (fclose, stream);
-  nlist_stream_global = stream;
-  nlist_nsyms_global = nsyms;
-  last_source_file = 0;
-  bzero (opaque_type_chain, sizeof opaque_type_chain);
-
-  type_vector_length = 160;
-  type_vector = (struct typevector *)
-		xmalloc (sizeof (struct typevector)
-				+ type_vector_length * sizeof (struct type *));
-  bzero (type_vector->type, type_vector_length * sizeof (struct type *));
-
-  start_symtab ();
-
-  symnum = 0;
-  while (symnum < nsyms)
-    {
-      QUIT;			/* Make this command interruptable.  */
-      read_one_sym (cs, &main_sym, &main_aux);
-
-      if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE)
-	{
-	  CORE_ADDR last_file_end = cur_src_end_addr;
-
-	  if (last_source_file)
-	    end_symtab ();
-
-	  start_symtab ();
-	  complete_symtab ("_globals_", 0, first_object_file_end);
-	  /* done with all files, everything from here on out is globals */
-	}
-
-      /* Special case for file with type declarations only, no text.  */
-      if (!last_source_file && cs->c_type != T_NULL && cs->c_secnum == N_DEBUG)
-	complete_symtab (filestring, 0, 0);
-
-      /* Typedefs should not be treated as symbol definitions.  */
-      if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF)
-	{
-	  /* record as misc function.  if we get '.bf' next,
-	   * then we undo this step
-	   */
-	  record_misc_function (cs->c_name, cs->c_value);
-
-	  fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr;
-	  fcn_start_addr = cs->c_value;
-	  fcn_cs_saved = *cs;
-	  fcn_sym_saved = main_sym;
-	  fcn_aux_saved = main_aux;
-	  continue;
-	}
-
-      switch (cs->c_sclass)
-	{
-	  case C_EFCN:
-	  case C_EXTDEF:
-	  case C_ULABEL:
-	  case C_USTATIC:
-	  case C_LINE:
-	  case C_ALIAS:
-	  case C_HIDDEN:
-	    printf ("Bad n_sclass = %d\n", cs->c_sclass);
-	    break;
-
-	  case C_FILE:
-	    /*
-	     * c_value field contains symnum of next .file entry in table
-	     * or symnum of first global after last .file.
-	     */
-	    next_file_symnum = cs->c_value;
-	    filestring = getfilename (&main_aux);
-	    /*
-	     * Complete symbol table for last object file
-	     * containing debugging information.
-	     */
-	    if (last_source_file)
-	      {
-		end_symtab ();
-		start_symtab ();
-	      }
-	    num_object_files++;
-	    break;
-
-          case C_STAT:
-	    if (cs->c_name[0] == '.') {
-		    if (strcmp (cs->c_name, _TEXT) == 0) {
-			    if (num_object_files == 1) {
-				    /* last address of startup file */
-				    first_object_file_end = cs->c_value +
-					    main_aux.x_scn.x_scnlen;
-			    }
-			    /* for some reason the old code didn't do
-			     * this if this section entry had
-			     * main_aux.x_scn.x_nlinno equal to 0
-			     */
-			    complete_symtab (filestring, cs->c_value,
-					     main_aux.x_scn.x_scnlen);
-		    }
-		    /* flush rest of '.' symbols */
-		    break;
-	    }
-	    /* fall in for static symbols that don't start with '.' */
-	  case C_EXT:
-	    if (cs->c_sclass == C_EXT &&
-		cs->c_secnum == N_ABS &&
-		strcmp (cs->c_name, _ETEXT) == 0)
-		    end_of_text_addr = cs->c_value;
-	    if (cs->c_type == T_NULL) {
-		    if (cs->c_secnum <= 1) {	/* text or abs */
-			    record_misc_function (cs->c_name, cs->c_value);
-			    break;
-		    } else {
-			    cs->c_type = T_INT;
-		    }
-	    }
-	    (void) process_coff_symbol (cs, &main_aux);
-	    break;
-
-	  case C_FCN:
-	    if (strcmp (cs->c_name, ".bf") == 0)
-	      {
-#if 0
-		/* Don't do this; we want all functions to be on the
-		   mfl now.  */
-		unrecord_misc_function ();
-#endif
-
-		within_function = 1;
-
-		/* value contains address of first non-init type code */
-		/* main_aux.x_sym.x_misc.x_lnsz.x_lnno
-			    contains line number of '{' } */
-		fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno;
-
-		new = (struct context_stack *)
-		  xmalloc (sizeof (struct context_stack));
-		new->depth = depth = 0;
-		new->next = 0;
-		context_stack = new;
-		new->locals = 0;
-		new->old_blocks = pending_blocks;
-		new->start_addr = fcn_start_addr;
-		fcn_cs_saved.c_name = getsymname (&fcn_sym_saved);
-		new->name = process_coff_symbol (&fcn_cs_saved,
-						 &fcn_aux_saved);
-	      }
-	    else if (strcmp (cs->c_name, ".ef") == 0)
-	      {
-		      /* the value of .ef is the address of epilogue code;
-		       * not useful for gdb
-		       */
-		/* { main_aux.x_sym.x_misc.x_lnsz.x_lnno
-			    contains number of lines to '}' */
-		fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno;
-		enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line);
-		new = context_stack;
-
-		if (new == 0)
-		  error ("Invalid symbol data; .bf/.ef/.bb/.eb symbol mismatch, at symbol %d.",
-			 symnum);
-		
-		finish_block (new->name, &local_symbols, new->old_blocks,
-			      new->start_addr,
-			      fcn_cs_saved.c_value +
-			          fcn_aux_saved.x_sym.x_misc.x_fsize);
-		context_stack = 0;
-		within_function = 0;
-		free (new);
-	      }
-	    break;
-
-	  case C_BLOCK:
-	    if (strcmp (cs->c_name, ".bb") == 0)
-	      {
-		new = (struct context_stack *)
-			    xmalloc (sizeof (struct context_stack));
-		depth++;
-		new->depth = depth;
-		new->next = context_stack;
-		context_stack = new;
-		new->locals = local_symbols;
-		new->old_blocks = pending_blocks;
-		new->start_addr = cs->c_value;
-		new->name = 0;
-		local_symbols = 0;
-	      }
-	    else if (strcmp (cs->c_name, ".eb") == 0)
-	      {
-		new = context_stack;
-		if (new == 0 || depth != new->depth)
-		  error ("Invalid symbol data: .bb/.eb symbol mismatch at symbol %d.",
-			 symnum);
-		if (local_symbols && context_stack->next)
-		  {
-		    /* Make a block for the local symbols within.  */
-		    finish_block (0, &local_symbols, new->old_blocks,
-				  new->start_addr, cs->c_value);
-		  }
-		depth--;
-		local_symbols = new->locals;
-		context_stack = new->next;
-		free (new);
-	      }
-	    break;
-
-	  default:
-	    (void) process_coff_symbol (cs, &main_aux);
-	    break;
-	}
-    }
-
-  if (last_source_file)
-    end_symtab ();
-  fclose (stream);
-  discard_cleanups (old_chain);
-}
-
-/* Routines for reading headers and symbols from executable.  */
-
-/* Read COFF file header, check magic number,
-   and return number of symbols. */
-read_file_hdr (chan, file_hdr)
-    int chan;
-    FILHDR *file_hdr;
-{
-  lseek (chan, 0L, 0);
-  if (myread (chan, (char *)file_hdr, FILHSZ) < 0)
-    return -1;
-
-  switch (file_hdr->f_magic)
-    {
-#ifdef MC68MAGIC
-    case MC68MAGIC:
-#endif
-#ifdef NS32GMAGIC
-      case NS32GMAGIC:
-      case NS32SMAGIC:
-#endif
-#ifdef I386MAGIC
-    case I386MAGIC:
-#endif
-#ifdef CLIPPERMAGIC
-    case CLIPPERMAGIC:
-#endif      
-	return file_hdr->f_nsyms;
-
-      default:
-#ifdef BADMAG
-	if (BADMAG(file_hdr))
-	  return -1;
-	else
-	  return file_hdr->f_nsyms;
-#else
-	return -1;
-#endif
-    }
-}
-
-read_aout_hdr (chan, aout_hdr, size)
-    int chan;
-    AOUTHDR *aout_hdr;
-    int size;
-{
-  lseek (chan, (long)FILHSZ, 0);
-  if (size != sizeof (AOUTHDR))
-    return -1;
-  if (myread (chan, (char *)aout_hdr, size) != size)
-    return -1;
-  return 0;
-}
-
-/* Read a section header.  OPTIONAL_HEADER_SIZE is the size of the
-   optional header (normally f_opthdr from the file header).
-
-   Return nonnegative for success, -1 for failure.  */
-int
-read_section_hdr (chan, section_name, section_hdr, nsects,
-                  optional_header_size)
-    register int chan;
-    register char *section_name;
-    SCNHDR *section_hdr;
-    register int nsects;
-    int optional_header_size;
-{
-  register int i;
-
-  if (lseek (chan, FILHSZ + optional_header_size, 0) < 0)
-    return -1;
-
-  for (i = 0; i < nsects; i++)
-    {
-      if (myread (chan, (char *)section_hdr, SCNHSZ) < 0)
-	return -1;
-      if (strncmp (section_hdr->s_name, section_name, 8) == 0)
-	return 0;
-    }
-    return -1;
-}
-
-read_one_sym (cs, sym, aux)
-    register struct coff_symbol *cs;
-    register SYMENT *sym;
-    register AUXENT *aux;
-{
-  cs->c_symnum = symnum;
-  fread ((char *)sym, SYMESZ, 1, nlist_stream_global);
-  cs->c_nsyms = (sym->n_numaux & 0xff) + 1;
-  if (cs->c_nsyms == 2)
-    {
-      /* doc for coff says there is either no aux entry or just one */
-      fread ((char *)aux, AUXESZ, 1, nlist_stream_global);
-    }
-  else if (cs->c_nsyms > 2)
-    error ("more than one aux symbol table entry at symnum=%d\n", symnum);
-
-  cs->c_name = getsymname (sym);
-  cs->c_value = sym->n_value;
-  cs->c_sclass = (sym->n_sclass & 0xff);
-  cs->c_secnum = sym->n_scnum;
-  cs->c_type = (unsigned) sym->n_type;
-
-  symnum += cs->c_nsyms;
-}
-
-/* Support for string table handling */
-
-static char *stringtab = NULL;
-
-static int
-init_stringtab (chan, offset)
-    int chan;
-    long offset;
-{
-  long buffer;
-  int val;
-
-  if (stringtab)
-    {
-      free (stringtab);
-      stringtab = NULL;
-    }
-
-  if (lseek (chan, offset, 0) < 0)
-    return -1;
-
-  val = myread (chan, (char *)&buffer, sizeof buffer);
-
-  /* If no string table is needed, then the file may end immediately
-     after the symbols.  Just return with `stringtab' set to null. */
-  if (val != sizeof buffer || buffer == 0)
-    return 0;
-
-  stringtab = (char *) xmalloc (buffer);
-  if (stringtab == NULL)
-    return -1;
-
-  bcopy (&buffer, stringtab, sizeof buffer);
-
-  val = myread (chan, stringtab + sizeof buffer, buffer - sizeof buffer);
-  if (val != buffer - sizeof buffer || stringtab[buffer - 1] != '\0')
-    return -1;
-
-  return 0;
-}
-
-static void
-free_stringtab ()
-{
-  if (stringtab)
-    free (stringtab);
-  stringtab = NULL;
-}
-
-static char *
-getsymname (symbol_entry)
-    SYMENT *symbol_entry;
-{
-  static char buffer[SYMNMLEN+1];
-  char *result;
-
-  if (symbol_entry->n_zeroes == 0)
-    {
-      result = stringtab + symbol_entry->n_offset;
-    }
-  else
-    {
-      strncpy (buffer, symbol_entry->n_name, SYMNMLEN);
-      buffer[SYMNMLEN] = '\0';
-      result = buffer;
-    }
-  return result;
-}
-
-static char *
-getfilename (aux_entry)
-    AUXENT *aux_entry;
-{
-  static char buffer[BUFSIZ];
-  register char *temp;
-  char *result;
-  extern char *rindex ();
-
-#ifndef COFF_NO_LONG_FILE_NAMES
-  if (aux_entry->x_file.x_foff != 0)
-    strcpy (buffer, stringtab + aux_entry->x_file.x_foff);
-  else
-#endif
-    {
-      strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN);
-      buffer[FILNMLEN] = '\0';
-    }
-  result = buffer;
-  if ((temp = rindex (result, '/')) != NULL)
-    result = temp + 1;
-  return (result);
-}
-
-/* Support for line number handling */
-static char *linetab = NULL;
-static long linetab_offset;
-static int linetab_count;
-
-static int
-init_lineno (chan, offset, count)
-    int chan;
-    long offset;
-    int count;
-{
-  int val;
-
-  if (lseek (chan, offset, 0) < 0)
-    return -1;
-  
-  if (linetab)
-    free (linetab);
-  linetab = (char *) xmalloc (count * LINESZ);
-
-  val = myread (chan, linetab, count * LINESZ);
-  if (val != count * LINESZ)
-    return -1;
-
-  linetab_offset = offset;
-  linetab_count = count;
-  return 0;
-}
-
-static void
-enter_linenos (file_offset, first_line, last_line)
-    long file_offset;
-    register int first_line;
-    register int last_line;
-{
-  register char *rawptr = &linetab[file_offset - linetab_offset];
-  struct lineno lptr;
-
-  /* skip first line entry for each function */
-  rawptr += LINESZ;
-  /* line numbers start at one for the first line of the function */
-  first_line--;
-
-  /* Bcopy since occaisionally rawptr isn't pointing at long
-     boundaries.  */
-  for (bcopy (rawptr, &lptr, LINESZ);
-       lptr.l_lnno && lptr.l_lnno <= last_line;
-       rawptr += LINESZ, bcopy (rawptr, &lptr, LINESZ))
-    {
-      record_line (first_line + lptr.l_lnno, lptr.l_addr.l_paddr);
-    }
-}
-
-static int
-hashname (name)
-     char *name;
-{
-  register char *p = name;
-  register int total = p[0];
-  register int c;
-
-  c = p[1];
-  total += c << 2;
-  if (c)
-    {
-      c = p[2];
-      total += c << 4;
-      if (c)
-	total += p[3] << 6;
-    }
-  
-  return total % HASHSIZE;
-}
-
-static void
-patch_type (type, real_type)
-    struct type *type;
-    struct type *real_type;
-{
-  register struct type *target = TYPE_TARGET_TYPE (type);
-  register struct type *real_target = TYPE_TARGET_TYPE (real_type);
-  int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field);
-
-  TYPE_LENGTH (target) = TYPE_LENGTH (real_target);
-  TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target);
-  TYPE_FIELDS (target) = (struct field *)
-				obstack_alloc (symbol_obstack, field_size);
-
-  bcopy (TYPE_FIELDS (real_target), TYPE_FIELDS (target), field_size);
-
-  if (TYPE_NAME (real_target))
-    {
-      if (TYPE_NAME (target))
-	free (TYPE_NAME (target));
-      TYPE_NAME (target) = concat (TYPE_NAME (real_target), "", "");
-    }
-}
-
-/* Patch up all appropriate typdef symbols in the opaque_type_chains
-   so that they can be used to print out opaque data structures properly */
-
-static void
-patch_opaque_types ()
-{
-  struct symtab *s;
-
-  /* Look at each symbol in the per-file block of each symtab.  */
-  for (s = symtab_list; s; s = s->next)
-    {
-      register struct block *b;
-      register int i;
-
-      /* Go through the per-file symbols only */
-      b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), 1);
-      for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--)
-	{
-	  register struct symbol *real_sym;
-
-	  /* Find completed typedefs to use to fix opaque ones.
-	     Remove syms from the chain when their types are stored,
-	     but search the whole chain, as there may be several syms
-	     from different files with the same name.  */
-	  real_sym = BLOCK_SYM (b, i);
-	  if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF &&
-	      SYMBOL_NAMESPACE (real_sym) == VAR_NAMESPACE &&
-	      TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR &&
-	      TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0)
-	    {
-	      register char *name = SYMBOL_NAME (real_sym);
-	      register int hash = hashname (name);
-	      register struct symbol *sym, *prev;
-
-	      prev = 0;
-	      for (sym = opaque_type_chain[hash]; sym;)
-		{
-		  if (name[0] == SYMBOL_NAME (sym)[0] &&
-		      !strcmp (name + 1, SYMBOL_NAME (sym) + 1))
-		    {
-		      if (prev)
-			SYMBOL_VALUE (prev) = SYMBOL_VALUE (sym);
-		      else
-			opaque_type_chain[hash]
-			  = (struct symbol *) SYMBOL_VALUE (sym);
-
-		      patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym));
-
-		      if (prev)
-			sym = (struct symbol *) SYMBOL_VALUE (prev);
-		      else
-			sym = opaque_type_chain[hash];
-		    }
-		  else
-		    {
-		      prev = sym;
-		      sym = (struct symbol *) SYMBOL_VALUE (sym);
-		    }
-		}
-	    }
-	}
-    }
-}
-
-static struct symbol *
-process_coff_symbol (cs, aux)
-     register struct coff_symbol *cs;
-     register AUXENT *aux;
-{
-  register struct symbol *sym
-    = (struct symbol *) obstack_alloc (symbol_obstack, sizeof (struct symbol));
-  char *name;
-  char *dot;
-#ifdef NAMES_HAVE_UNDERSCORE
-  int offset = 1;
-#else
-  int offset = 0;
-#endif
-
-  bzero (sym, sizeof (struct symbol));
-  name = cs->c_name;
-  name = (name[0] == '_' ? name + offset : name);
-  SYMBOL_NAME (sym) = obstack_copy0 (symbol_obstack, name, strlen (name));
-
-  /* default assumptions */
-  SYMBOL_VALUE (sym) = cs->c_value;
-  SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
-
-  if (ISFCN (cs->c_type))
-    {
-      SYMBOL_TYPE (sym) = 
-	lookup_function_type (decode_function_type (cs, cs->c_type, aux));
-      SYMBOL_CLASS (sym) = LOC_BLOCK;
-      if (cs->c_sclass == C_STAT)
-	add_symbol_to_list (sym, &file_symbols);
-      else if (cs->c_sclass == C_EXT)
-	add_symbol_to_list (sym, &global_symbols);
-    }
-  else
-    {
-      SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux);
-      switch (cs->c_sclass)
-	{
-	  case C_NULL:
-	    break;
-
-	  case C_AUTO:
-	    SYMBOL_CLASS (sym) = LOC_LOCAL;
-	    add_symbol_to_list (sym, &local_symbols);
-	    break;
-
-	  case C_EXT:
-	    SYMBOL_CLASS (sym) = LOC_STATIC;
-	    add_symbol_to_list (sym, &global_symbols);
-	    break;
-
-	  case C_STAT:
-	    SYMBOL_CLASS (sym) = LOC_STATIC;
-	    if (within_function) {
-	      /* Static symbol of local scope */
-	      add_symbol_to_list (sym, &local_symbols);
-	    }
-	    else {
-	      /* Static symbol at top level of file */
-	      add_symbol_to_list (sym, &file_symbols);
-	    }
-	    break;
-
-	  case C_REG:
-	    SYMBOL_CLASS (sym) = LOC_REGISTER;
-	    add_symbol_to_list (sym, &local_symbols);
-	    break;
-
-	  case C_LABEL:
-	    break;
-
-	  case C_ARG:
-	    SYMBOL_CLASS (sym) = LOC_ARG;
-	    add_symbol_to_list (sym, &local_symbols);
-#ifndef clipper	   
-	    /* If PCC says a parameter is a short or a char,
-	       it is really an int.  */
-	    if (SYMBOL_TYPE (sym) == builtin_type_char
-		|| SYMBOL_TYPE (sym) == builtin_type_short)
-	      SYMBOL_TYPE (sym) = builtin_type_int;
-	    else if (SYMBOL_TYPE (sym) == builtin_type_unsigned_char
-		     || SYMBOL_TYPE (sym) == builtin_type_unsigned_short)
-	      SYMBOL_TYPE (sym) = builtin_type_unsigned_int;
-#endif
-	    break;
-
-	  case C_REGPARM:
-	    SYMBOL_CLASS (sym) = LOC_REGPARM;
-	    add_symbol_to_list (sym, &local_symbols);
-#ifndef clipper
-	    /* If PCC says a parameter is a short or a char,
-	       it is really an int.  */
-	    if (SYMBOL_TYPE (sym) == builtin_type_char
-		|| SYMBOL_TYPE (sym) == builtin_type_short)
-	      SYMBOL_TYPE (sym) = builtin_type_int;
-	    else if (SYMBOL_TYPE (sym) == builtin_type_unsigned_char
-		     || SYMBOL_TYPE (sym) == builtin_type_unsigned_short)
-	      SYMBOL_TYPE (sym) = builtin_type_unsigned_int;
-#endif
-	    break;
-	    
-	  case C_TPDEF:
-	    SYMBOL_CLASS (sym) = LOC_TYPEDEF;
-	    SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
-
-	    /* If type has no name, give it one */
-	    if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0 
-		&& (TYPE_FLAGS (SYMBOL_TYPE (sym)) & TYPE_FLAG_PERM) == 0)
-	      TYPE_NAME (SYMBOL_TYPE (sym))
-					  = concat (SYMBOL_NAME (sym), "", "");
-
-	    /* Keep track of any type which points to empty structured type,
-		so it can be filled from a definition from another file */
-	    if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR &&
-		TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0)
-	      {
-		register int i = hashname (SYMBOL_NAME (sym));
-
-		SYMBOL_VALUE (sym) = (int) opaque_type_chain[i];
-		opaque_type_chain[i] = sym;
-	      }
-	    add_symbol_to_list (sym, &file_symbols);
-	    break;
-
-	  case C_STRTAG:
-	  case C_UNTAG:
-	  case C_ENTAG:
-	    SYMBOL_CLASS (sym) = LOC_TYPEDEF;
-	    SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
-	    if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0
-		&& (TYPE_FLAGS (SYMBOL_TYPE (sym)) & TYPE_FLAG_PERM) == 0)
-	      TYPE_NAME (SYMBOL_TYPE (sym))
-		= concat ("",
-			  (cs->c_sclass == C_ENTAG
-			   ? "enum "
-			   : (cs->c_sclass == C_STRTAG
-			      ? "struct " : "union ")),
-			  SYMBOL_NAME (sym));
-	    add_symbol_to_list (sym, &file_symbols);
-	    break;
-
-	  default:
-	    break;
-	}
-    }
-  return sym;
-}
-
-/* Decode a coff type specifier;
-   return the type that is meant.  */
-
-static
-struct type *
-decode_type (cs, c_type, aux)
-     register struct coff_symbol *cs;
-     unsigned int c_type;
-     register AUXENT *aux;
-{
-  register struct type *type = 0;
-  register int n;
-  unsigned int new_c_type;
-
-  if (c_type & ~N_BTMASK)
-    {
-      new_c_type = DECREF (c_type);
-      if (ISPTR (c_type))
-	{
-	  type = decode_type (cs, new_c_type, aux);
-	  type = lookup_pointer_type (type);
-	}
-      else if (ISFCN (c_type))
-	{
-	  type = decode_type (cs, new_c_type, aux);
-	  type = lookup_function_type (type);
-	}
-      else if (ISARY (c_type))
-	{
-	  int i, n;
-	  register unsigned short *dim;
-	  struct type *base_type;
-
-	  /* Define an array type.  */
-	  /* auxent refers to array, not base type */
-	  if (aux->x_sym.x_tagndx == 0)
-	    cs->c_nsyms = 1;
-
-	  /* shift the indices down */
-	  dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0];
-	  i = 1;
-	  n = dim[0];
-	  for (i = 0; *dim && i < DIMNUM - 1; i++, dim++)
-	    *dim = *(dim + 1);
-	  *dim = 0;
-
-	  type = (struct type *)
-		    obstack_alloc (symbol_obstack, sizeof (struct type));
-	  bzero (type, sizeof (struct type));
-
-	  base_type = decode_type (cs, new_c_type, aux);
-
-	  TYPE_CODE (type) = TYPE_CODE_ARRAY;
-	  TYPE_TARGET_TYPE (type) = base_type;
-	  TYPE_LENGTH (type) = n * TYPE_LENGTH (base_type);
-	}
-      return type;
-    }
-
-  /* Reference to existing type */
-  if (cs->c_nsyms > 1 && aux->x_sym.x_tagndx != 0)
-    {
-      type = coff_alloc_type (aux->x_sym.x_tagndx);
-      return type;
-    }
-
-  return decode_base_type (cs, BTYPE (c_type), aux);
-}
-
-/* Decode a coff type specifier for function definition;
-   return the type that the function returns.  */
-
-static
-struct type *
-decode_function_type (cs, c_type, aux)
-     register struct coff_symbol *cs;
-     unsigned int c_type;
-     register AUXENT *aux;
-{
-  if (aux->x_sym.x_tagndx == 0)
-    cs->c_nsyms = 1;	/* auxent refers to function, not base type */
-
-  return decode_type (cs, DECREF (cs->c_type), aux);
-}
-
-/* basic C types */
-
-static
-struct type *
-decode_base_type (cs, c_type, aux)
-     register struct coff_symbol *cs;
-     unsigned int c_type;
-     register AUXENT *aux;
-{
-  struct type *type;
-
-  switch (c_type)
-    {
-      case T_NULL:
-        /* shows up with "void (*foo)();" structure members */
-	return builtin_type_void;
-
-      case T_ARG:
-	/* shouldn't show up here */
-	break;
-
-      case T_CHAR:
-	return builtin_type_char;
-
-      case T_SHORT:
-	return builtin_type_short;
-
-      case T_INT:
-	return builtin_type_int;
-
-      case T_LONG:
-	return builtin_type_long;
-
-      case T_FLOAT:
-	return builtin_type_float;
-
-      case T_DOUBLE:
-	return builtin_type_double;
-
-      case T_STRUCT:
-	if (cs->c_nsyms != 2)
-	  {
-	    /* anonymous structure type */
-	    type = coff_alloc_type (cs->c_symnum);
-	    TYPE_CODE (type) = TYPE_CODE_STRUCT;
-	    TYPE_NAME (type) = concat ("struct ", "<opaque>", "");
-	    TYPE_LENGTH (type) = 0;
-	    TYPE_FIELDS (type) = 0;
-	    TYPE_NFIELDS (type) = 0;
-	  }
-	else
-	  {
-	    type = read_struct_type (cs->c_symnum,
-				    aux->x_sym.x_misc.x_lnsz.x_size,
-				    aux->x_sym.x_fcnary.x_fcn.x_endndx);
-	  }
-	return type;
-
-      case T_UNION:
-	if (cs->c_nsyms != 2)
-	  {
-	    /* anonymous union type */
-	    type = coff_alloc_type (cs->c_symnum);
-	    TYPE_NAME (type) = concat ("union ", "<opaque>", "");
-	    TYPE_LENGTH (type) = 0;
-	    TYPE_FIELDS (type) = 0;
-	    TYPE_NFIELDS (type) = 0;
-	  }
-	else
-	  {
-	    type = read_struct_type (cs->c_symnum,
-				    aux->x_sym.x_misc.x_lnsz.x_size,
-				    aux->x_sym.x_fcnary.x_fcn.x_endndx);
-	  }
-	TYPE_CODE (type) = TYPE_CODE_UNION;
-	return type;
-
-      case T_ENUM:
-	return read_enum_type (cs->c_symnum,
-				    aux->x_sym.x_misc.x_lnsz.x_size,
-				    aux->x_sym.x_fcnary.x_fcn.x_endndx);
-
-      case T_MOE:
-	/* shouldn't show up here */
-	break;
-
-      case T_UCHAR:
-	return builtin_type_unsigned_char;
-
-      case T_USHORT:
-	return builtin_type_unsigned_short;
-
-      case T_UINT:
-	return builtin_type_unsigned_int;
-
-      case T_ULONG:
-	return builtin_type_unsigned_long;
-    }
-  printf ("unexpected type %d at symnum %d\n", c_type, cs->c_symnum);
-  return builtin_type_void;
-}
-
-/* This page contains subroutines of read_type.  */
-
-/* Read the description of a structure (or union type)
-   and return an object describing the type.  */
-
-static struct type *
-read_struct_type (index, length, lastsym)
-     int index;
-     int length;
-     int lastsym;
-{
-  struct nextfield
-    {
-      struct nextfield *next;
-      struct field field;
-    };
-
-  register struct type *type;
-  register struct nextfield *list = 0;
-  struct nextfield *new;
-  int nfields = 0;
-  register int n;
-  char *name;
-#ifdef NAMES_HAVE_UNDERSCORE
-  int offset = 1;
-#else
-  int offset = 0;
-#endif
-  struct coff_symbol member_sym;
-  register struct coff_symbol *ms = &member_sym;
-  SYMENT sub_sym;
-  AUXENT sub_aux;
-  int done = 0;
-
-  type = coff_alloc_type (index);
-  TYPE_CODE (type) = TYPE_CODE_STRUCT;
-  TYPE_LENGTH (type) = length;
-
-  while (!done && symnum < lastsym && symnum < nlist_nsyms_global)
-    {
-      read_one_sym (ms, &sub_sym, &sub_aux);
-      name = ms->c_name;
-      name = (name[0] == '_' ? name + offset : name);
-
-      switch (ms->c_sclass)
-	{
-	  case C_MOS:
-	  case C_MOU:
-
-	    /* Get space to record the next field's data.  */
-	    new = (struct nextfield *) alloca (sizeof (struct nextfield));
-	    new->next = list;
-	    list = new;
-
-	    /* Save the data.  */
-	    list->field.name = savestring (name, strlen (name));
-	    list->field.type = decode_type (ms, ms->c_type, &sub_aux);
-	    list->field.bitpos = 8 * ms->c_value;
-	    list->field.bitsize = 0;
-	    nfields++;
-	    break;
-
-	  case C_FIELD:
-
-	    /* Get space to record the next field's data.  */
-	    new = (struct nextfield *) alloca (sizeof (struct nextfield));
-	    new->next = list;
-	    list = new;
-
-	    /* Save the data.  */
-	    list->field.name = savestring (name, strlen (name));
-	    list->field.type = decode_type (ms, ms->c_type, &sub_aux);
-	    list->field.bitpos = ms->c_value;
-	    list->field.bitsize = sub_aux.x_sym.x_misc.x_lnsz.x_size;
-	    nfields++;
-	    break;
-
-	  case C_EOS:
-	    done = 1;
-	    break;
-	}
-    }
-  /* Now create the vector of fields, and record how big it is.  */
-
-  TYPE_NFIELDS (type) = nfields;
-  TYPE_FIELDS (type) = (struct field *)
-		obstack_alloc (symbol_obstack, sizeof (struct field) * nfields);
-
-  /* Copy the saved-up fields into the field vector.  */
-
-  for (n = nfields; list; list = list->next)
-    TYPE_FIELD (type, --n) = list->field;
-
-  return type;
-}
-
-/* Read a definition of an enumeration type,
-   and create and return a suitable type object.
-   Also defines the symbols that represent the values of the type.  */
-
-static struct type *
-read_enum_type (index, length, lastsym)
-     int index;
-     int length;
-     int lastsym;
-{
-  register struct symbol *sym;
-  register struct type *type;
-  int nsyms = 0;
-  struct pending **symlist;
-  struct coff_symbol member_sym;
-  register struct coff_symbol *ms = &member_sym;
-  SYMENT sub_sym;
-  AUXENT sub_aux;
-  struct pending *osyms, *syms;
-  register int n;
-  char *name;
-#ifdef NAMES_HAVE_UNDERSCORE
-  int offset = 1;
-#else
-  int offset = 0;
-#endif
-
-  type = coff_alloc_type (index);
-  if (within_function)
-    symlist = &local_symbols;
-  else
-    symlist = &file_symbols;
-  osyms = *symlist;
-
-  while (symnum < lastsym && symnum < nlist_nsyms_global)
-    {
-      read_one_sym (ms, &sub_sym, &sub_aux);
-      name = ms->c_name;
-      name = (name[0] == '_' ? name + offset : name);
-
-      switch (ms->c_sclass)
-	{
-	  case C_MOE:
-	    sym = (struct symbol *) xmalloc (sizeof (struct symbol));
-	    bzero (sym, sizeof (struct symbol));
-
-	    SYMBOL_NAME (sym) = savestring (name, strlen (name));
-	    SYMBOL_CLASS (sym) = LOC_CONST;
-	    SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
-	    SYMBOL_VALUE (sym) = ms->c_value;
-	    add_symbol_to_list (sym, symlist);
-	    nsyms++;
-	    break;
-
-	  case C_EOS:
-	    break;
-	}
-    }
-
-  /* Now fill in the fields of the type-structure.  */
-
-  TYPE_LENGTH (type) = sizeof (int);
-  TYPE_CODE (type) = TYPE_CODE_ENUM;
-  TYPE_NFIELDS (type) = nsyms;
-  TYPE_FIELDS (type) = (struct field *)
-		obstack_alloc (symbol_obstack, sizeof (struct field) * nsyms);
-
-  /* Find the symbols for the values and put them into the type.
-     The symbols can be found in the symlist that we put them on
-     to cause them to be defined.  osyms contains the old value
-     of that symlist; everything up to there was defined by us.  */
-
-  for (syms = *symlist, n = nsyms; syms != osyms; syms = syms->next)
-    {
-      SYMBOL_TYPE (syms->symbol) = type;
-      TYPE_FIELD_NAME (type, --n) = SYMBOL_NAME (syms->symbol);
-      TYPE_FIELD_VALUE (type, n) = 0;
-      TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (syms->symbol);
-      TYPE_FIELD_BITSIZE (type, n) = 0;
-    }
-  return type;
-}
-
-/* This function is really horrible, but to avoid it, there would need
-   to be more filling in of forward references.  THIS SHOULD BE MOVED
-   OUT OF COFFREAD.C AND DBXREAD.C TO SOME PLACE WHERE IT CAN BE SHARED. */
-int
-fill_in_vptr_fieldno (type)
-     struct type *type;
-{
-  if (TYPE_VPTR_FIELDNO (type) < 0)
-    TYPE_VPTR_FIELDNO (type) =
-      fill_in_vptr_fieldno (TYPE_BASECLASS (type, 1));
-  return TYPE_VPTR_FIELDNO (type);
-}
-
-/* partial symbol tables are not implemented in coff, therefore
-   block_for_pc() (and others) will never decide to call this. */
-
-extern struct symtab *
-psymtab_to_symtab ()
-{
-  fatal ("error: Someone called psymtab_to_symtab\n");
-}
-
-/* These will stay zero all the time */
-struct psymbol_allocation_list global_psymbols, static_psymbols;
-
-_initialize_coff ()
-{
-  symfile = 0;
-
-  bzero (&global_psymbols, sizeof (global_psymbols));
-  bzero (&static_psymbols, sizeof (static_psymbols));
-
-  add_com ("symbol-file", class_files, symbol_file_command,
-	   "Load symbol table (in coff format) from executable file FILE.");
-}
-
-
-#endif /* COFF_FORMAT */
-