Initial revision

1 files changed, 1624 insertions, 0 deletions

diff --git a/gdb/os9kread.c b/gdb/os9kread.c
new file mode 100644
index 00000000000..673d415c6e2
--- /dev/null
+++ b/gdb/os9kread.c
@@ -0,0 +1,1624 @@
+/* Read os9/os9k symbol tables and convert to internal format, for GDB.
+   Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 96, 1998
+   Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program 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 this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* This module provides three functions: os9k_symfile_init,
+   which initializes to read a symbol file; os9k_new_init, which 
+   discards existing cached information when all symbols are being
+   discarded; and os9k_symfile_read, which reads a symbol table
+   from a file.
+
+   os9k_symfile_read 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.  os9k_psymtab_to_symtab() is the function that does this */
+
+#include "defs.h"
+#include "gdb_string.h"
+#include <stdio.h>
+
+#if defined(USG) || defined(__CYGNUSCLIB__)
+#include <sys/types.h>
+#include <fcntl.h>
+#endif
+
+#include "obstack.h"
+#include "gdb_stat.h"
+#include <ctype.h>
+#include "symtab.h"
+#include "breakpoint.h"
+#include "command.h"
+#include "target.h"
+#include "gdbcore.h"		/* for bfd stuff */
+#include "libaout.h"	 	/* FIXME Secret internal BFD stuff for a.out */
+#include "symfile.h"
+#include "objfiles.h"
+#include "buildsym.h"
+#include "gdb-stabs.h"
+#include "demangle.h"
+#include "language.h"		/* Needed inside partial-stab.h */
+#include "complaints.h"
+#include "os9k.h"
+#include "stabsread.h"
+
+/* Each partial symbol table entry contains a pointer to private data for the
+   read_symtab() function to use when expanding a partial symbol table entry
+   to a full symbol table entry.
+
+   For dbxread this structure contains the offset within the file symbol table
+   of first local symbol for this file, and count of the section
+   of the symbol table devoted to this file's symbols (actually, the section
+   bracketed may contain more than just this file's symbols).  It also contains
+   further information needed to locate the symbols if they are in an ELF file.
+
+   If ldsymcnt is 0, the only reason for this thing's existence is the
+   dependency list.  Nothing else will happen when it is read in.  */
+
+#define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff)
+#define LDSYMCNT(p) (((struct symloc *)((p)->read_symtab_private))->ldsymnum)
+
+struct symloc {
+  int ldsymoff;
+  int ldsymnum;
+};
+
+/* Remember what we deduced to be the source language of this psymtab. */
+static enum language psymtab_language = language_unknown;
+
+/* keep partial symbol table file nested depth */
+static int psymfile_depth = 0;
+
+/* keep symbol table file nested depth */
+static int symfile_depth = 0;
+
+/* Nonzero means give verbose info on gdb action.  From main.c.  */
+extern int info_verbose;
+
+extern int previous_stab_code;
+
+/* Name of last function encountered.  Used in Solaris to approximate
+   object file boundaries.  */
+static char *last_function_name;
+
+/* Complaints about the symbols we have encountered.  */
+extern struct complaint lbrac_complaint;
+
+extern struct complaint unknown_symtype_complaint;
+
+extern struct complaint unknown_symchar_complaint;
+
+extern struct complaint lbrac_rbrac_complaint;
+
+extern struct complaint repeated_header_complaint;
+
+extern struct complaint repeated_header_name_complaint;
+
+#if 0
+static struct complaint lbrac_unmatched_complaint =
+  {"unmatched Increment Block Entry before symtab pos %d", 0, 0};
+
+static struct complaint lbrac_mismatch_complaint =
+  {"IBE/IDE symbol mismatch at symtab pos %d", 0, 0};
+#endif
+
+/* Local function prototypes */
+
+static void
+read_minimal_symbols PARAMS ((struct objfile *, struct section_offsets *));
+
+static void
+os9k_read_ofile_symtab PARAMS ((struct partial_symtab *));
+
+static void
+os9k_psymtab_to_symtab PARAMS ((struct partial_symtab *));
+
+static void
+os9k_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *));
+
+static void
+read_os9k_psymtab PARAMS ((struct section_offsets *, struct objfile *,
+                         CORE_ADDR, int));
+
+static int
+fill_sym PARAMS ((FILE *, bfd *));
+
+static void
+os9k_symfile_init PARAMS ((struct objfile *));
+
+static void
+os9k_new_init PARAMS ((struct objfile *));
+
+static void
+os9k_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int));
+
+static void
+os9k_symfile_finish PARAMS ((struct objfile *));
+
+static void
+os9k_process_one_symbol PARAMS ((int, int, CORE_ADDR, char *, 
+     struct section_offsets *, struct objfile *));
+
+static struct partial_symtab *
+os9k_start_psymtab PARAMS ((struct objfile *, struct section_offsets *, char *,
+                       CORE_ADDR, int, int, struct partial_symbol **,
+                       struct partial_symbol **));
+
+static struct partial_symtab *
+os9k_end_psymtab PARAMS ((struct partial_symtab *, char **, int, int, CORE_ADDR,
+                     struct partial_symtab **, int));
+
+static void
+record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *, 
+	             struct section_offsets *));
+
+#define HANDLE_RBRAC(val) \
+  if ((val) > pst->texthigh) pst->texthigh = (val);
+
+#define SWAP_STBHDR(hdrp, abfd) \
+  { \
+    (hdrp)->fmtno = bfd_get_16(abfd, (unsigned char *)&(hdrp)->fmtno); \
+    (hdrp)->crc = bfd_get_32(abfd, (unsigned char *)&(hdrp)->crc); \
+    (hdrp)->offset = bfd_get_32(abfd, (unsigned char *)&(hdrp)->offset); \
+    (hdrp)->nsym = bfd_get_32(abfd, (unsigned char *)&(hdrp)->nsym); \
+  }
+#define SWAP_STBSYM(symp, abfd) \
+  { \
+    (symp)->value = bfd_get_32(abfd, (unsigned char *)&(symp)->value); \
+    (symp)->type = bfd_get_16(abfd, (unsigned char *)&(symp)->type); \
+    (symp)->stroff = bfd_get_32(abfd, (unsigned char *)&(symp)->stroff); \
+  }
+#define N_DATA 0
+#define N_BSS 1
+#define N_RDATA 2
+#define N_IDATA 3
+#define N_TEXT 4
+#define N_ABS 6
+
+static void
+record_minimal_symbol (name, address, type, objfile, section_offsets)
+     char *name;
+     CORE_ADDR address;
+     int type;
+     struct objfile *objfile;
+     struct section_offsets *section_offsets;
+{
+  enum minimal_symbol_type ms_type;
+
+  switch (type)
+    {
+    case N_TEXT:
+	  ms_type = mst_text;
+	  address += ANOFFSET(section_offsets, SECT_OFF_TEXT);
+	  break;
+    case N_DATA:
+	  ms_type = mst_data;
+	  break;
+    case N_BSS:
+          ms_type = mst_bss;
+	  break;
+    case N_RDATA:
+	  ms_type = mst_bss;
+	  break;
+    case N_IDATA:	
+	  ms_type = mst_data;
+	  break;
+    case N_ABS:
+	  ms_type = mst_abs;
+	  break;
+    default:
+          ms_type = mst_unknown; break;
+  }
+
+  prim_record_minimal_symbol (name, address, ms_type, objfile);
+}
+
+/* read and process .stb file and store in minimal symbol table */
+typedef char mhhdr[80];
+struct stbhdr {
+	mhhdr comhdr;
+	char * name;
+	short fmtno;
+	int crc;
+	int offset;
+	int nsym;
+	char *pad;
+};
+struct stbsymbol {
+	int value;
+	short type;
+	int stroff;
+};
+#define STBSYMSIZE 10
+
+static void
+read_minimal_symbols(objfile, section_offsets)
+     struct objfile *objfile;
+     struct section_offsets *section_offsets;
+{
+FILE *fp;
+bfd *abfd;
+struct stbhdr hdr;
+struct stbsymbol sym;
+int ch, i, j, off;
+char buf[64], buf1[128];
+		
+  fp = objfile->auxf1;
+  if (fp == NULL) return;
+  abfd = objfile->obfd;
+  fread(&hdr.comhdr[0], sizeof(mhhdr), 1, fp);
+  i = 0;
+  ch = getc(fp);
+  while (ch != -1) {
+    buf[i] = (char)ch;
+    i++;
+    if (ch == 0) break;
+    ch = getc(fp);
+  };
+  if (i%2) ch=getc(fp);
+  hdr.name = &buf[0];
+
+  fread(&hdr.fmtno, sizeof(hdr.fmtno), 1, fp);
+  fread(&hdr.crc, sizeof(hdr.crc), 1, fp);
+  fread(&hdr.offset, sizeof(hdr.offset), 1, fp);
+  fread(&hdr.nsym, sizeof(hdr.nsym), 1, fp);
+  SWAP_STBHDR(&hdr, abfd);      
+	
+  /* read symbols */
+  init_minimal_symbol_collection();
+  off = hdr.offset;
+  for (i = hdr.nsym; i > 0; i--) {
+    fseek(fp, (long)off, 0);
+    fread(&sym.value, sizeof(sym.value), 1, fp);
+    fread(&sym.type, sizeof(sym.type), 1, fp);
+    fread(&sym.stroff, sizeof(sym.stroff), 1, fp);
+    SWAP_STBSYM (&sym, abfd);
+    fseek(fp, (long)sym.stroff, 0);
+    j = 0;
+    ch = getc(fp);
+    while (ch != -1) {
+	buf1[j] = (char)ch;
+	j++;
+	if (ch == 0) break;
+	ch = getc(fp);
+    };
+    record_minimal_symbol(buf1, sym.value, sym.type&7, objfile, section_offsets);
+    off += STBSYMSIZE;
+  };
+  install_minimal_symbols (objfile);
+  return;
+}
+
+/* Scan and build partial symbols for a symbol file.
+   We have been initialized by a call to os9k_symfile_init, which 
+   put all the relevant info into a "struct os9k_symfile_info",
+   hung off the objfile structure.
+
+   SECTION_OFFSETS contains offsets relative to which the symbols in the
+   various sections are (depending where the sections were actually loaded).
+   MAINLINE is true if we are reading the main symbol
+   table (as opposed to a shared lib or dynamically loaded file).  */
+
+static void
+os9k_symfile_read (objfile, section_offsets, mainline)
+     struct objfile *objfile;
+     struct section_offsets *section_offsets;
+     int mainline;	/* FIXME comments above */
+{
+  bfd *sym_bfd;
+  struct cleanup *back_to;
+
+  sym_bfd = objfile->obfd;
+  /* If we are reinitializing, or if we have never loaded syms yet, init */
+  if (mainline || objfile->global_psymbols.size == 0 || 
+    objfile->static_psymbols.size == 0)
+    init_psymbol_list (objfile, DBX_SYMCOUNT (objfile));
+
+  free_pending_blocks ();
+  back_to = make_cleanup ((make_cleanup_func) really_free_pendings, 0);
+
+  make_cleanup ((make_cleanup_func) discard_minimal_symbols, 0);
+  read_minimal_symbols (objfile, section_offsets);
+
+  /* Now that the symbol table data of the executable file are all in core,
+     process them and define symbols accordingly.  */
+  read_os9k_psymtab (section_offsets, objfile,
+		     DBX_TEXT_ADDR (objfile),
+		     DBX_TEXT_SIZE (objfile));
+
+  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).  */
+
+static void
+os9k_new_init (ignore)
+     struct objfile *ignore;
+{
+  stabsread_new_init ();
+  buildsym_new_init ();
+  psymfile_depth = 0;
+/*
+  init_header_files ();
+*/
+}
+
+/* os9k_symfile_init ()
+   It is passed a struct objfile which contains, among other things,
+   the BFD for the file whose symbols are being read, and a slot for a pointer
+   to "private data" which we fill with goodies.
+
+   Since BFD doesn't know how to read debug symbols in a format-independent
+   way (and may never do so...), we have to do it ourselves.  We will never
+   be called unless this is an a.out (or very similar) file. 
+   FIXME, there should be a cleaner peephole into the BFD environment here.  */
+
+static void
+os9k_symfile_init (objfile)
+     struct objfile *objfile;
+{
+  bfd *sym_bfd = objfile->obfd;
+  char *name = bfd_get_filename (sym_bfd);
+  char dbgname[512], stbname[512];
+  FILE *symfile = 0;
+  FILE *minfile = 0;
+  asection *text_sect;
+
+  strcpy(dbgname, name);
+  strcat(dbgname, ".dbg");
+  strcpy(stbname, name);
+  strcat(stbname, ".stb");
+
+  if ((symfile = fopen(dbgname, "r")) == NULL) {
+    warning("Symbol file %s not found", dbgname);
+  }
+  objfile->auxf2 = symfile;
+
+  if ((minfile = fopen(stbname, "r")) == NULL) {
+    warning("Symbol file %s not found", stbname);
+  }
+  objfile->auxf1 = minfile;
+
+  /* Allocate struct to keep track of the symfile */
+  objfile->sym_stab_info = (struct dbx_symfile_info *)
+    xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info));
+  DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL;
+
+  text_sect = bfd_get_section_by_name (sym_bfd, ".text");
+  if (!text_sect)
+    error ("Can't find .text section in file");
+  DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect);
+  DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect);
+
+  DBX_SYMBOL_SIZE (objfile) = 0;     /* variable size symbol */
+  DBX_SYMCOUNT (objfile) =  0;  /* used to be bfd_get_symcount(sym_bfd) */
+  DBX_SYMTAB_OFFSET (objfile) = 0;  /* used to be SYMBOL_TABLE_OFFSET */
+}
+
+/* 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 void
+os9k_symfile_finish (objfile)
+     struct objfile *objfile;
+{
+  if (objfile->sym_stab_info != NULL)
+    {
+      mfree (objfile -> md, objfile->sym_stab_info);
+    }
+/*
+  free_header_files ();
+*/
+}
+
+
+struct st_dbghdr {
+  int sync;
+  short rev;
+  int crc;
+  short os;
+  short cpu;
+};
+#define SYNC 		(int)0xefbefeca
+
+#define SWAP_DBGHDR(hdrp, abfd) \
+  { \
+    (hdrp)->sync = bfd_get_32(abfd, (unsigned char *)&(hdrp)->sync); \
+    (hdrp)->rev = bfd_get_16(abfd, (unsigned char *)&(hdrp)->rev); \
+    (hdrp)->crc = bfd_get_32(abfd, (unsigned char *)&(hdrp)->crc); \
+    (hdrp)->os = bfd_get_16(abfd, (unsigned char *)&(hdrp)->os); \
+    (hdrp)->cpu = bfd_get_16(abfd, (unsigned char *)&(hdrp)->cpu); \
+  }
+
+#define N_SYM_CMPLR     0
+#define N_SYM_SLINE     1
+#define N_SYM_SYM       2
+#define N_SYM_LBRAC     3
+#define N_SYM_RBRAC     4
+#define N_SYM_SE        5
+
+struct internal_symstruct {
+  short n_type;
+  short n_desc;
+  long n_value;
+  char * n_strx;
+};
+static struct internal_symstruct symbol;
+static struct internal_symstruct *symbuf = &symbol;
+static char strbuf[4096];
+static struct st_dbghdr dbghdr;
+static short cmplrid;
+
+#define VER_PRE_ULTRAC	((short)4)
+#define VER_ULTRAC	((short)5)
+
+static int
+fill_sym (dbg_file, abfd)
+     FILE *dbg_file;
+     bfd *abfd;
+{
+short si, nmask;
+long li;
+int ii;
+char *p;
+
+  int nbytes = fread(&si, sizeof(si), 1, dbg_file);
+  if (nbytes == 0)
+    return 0;
+  if (nbytes < 0)
+    perror_with_name ("reading .dbg file.");
+  symbuf->n_desc = 0;
+  symbuf->n_value = 0;
+  symbuf->n_strx = NULL;
+  symbuf->n_type = bfd_get_16 (abfd, (unsigned char *)&si);
+  symbuf->n_type = 0xf & symbuf->n_type;
+  switch (symbuf->n_type)
+    {
+    case N_SYM_CMPLR:
+      fread(&si, sizeof(si), 1, dbg_file);
+      symbuf->n_desc = bfd_get_16(abfd, (unsigned char *)&si);
+      cmplrid = symbuf->n_desc & 0xff;
+      break;
+    case N_SYM_SLINE:
+      fread(&li, sizeof(li), 1, dbg_file);
+      symbuf->n_value = bfd_get_32(abfd, (unsigned char *)&li);
+      fread(&li, sizeof(li), 1, dbg_file);
+      li = bfd_get_32(abfd, (unsigned char *)&li);
+      symbuf->n_strx = (char *)(li >> 12);
+      symbuf->n_desc = li & 0xfff;
+      break;
+    case N_SYM_SYM:
+      fread(&li, sizeof(li), 1, dbg_file);
+      symbuf->n_value = bfd_get_32(abfd, (unsigned char *)&li);
+      si = 0;
+      do {
+	ii = getc(dbg_file);
+	strbuf[si++] = (char) ii;
+      } while (ii != 0 || si % 2 != 0);
+      symbuf->n_strx = strbuf;
+      p = (char *) strchr (strbuf, ':');
+      if (!p) break;
+      if ((p[1] == 'F' || p[1] == 'f') && cmplrid == VER_PRE_ULTRAC)
+	{
+	  fread(&si, sizeof(si), 1, dbg_file);
+	  nmask = bfd_get_16(abfd, (unsigned char *)&si);
+	  for (ii=0; ii<nmask; ii++)
+	    fread(&si, sizeof(si), 1, dbg_file);
+	}
+      break;
+    case N_SYM_LBRAC:
+      fread(&li, sizeof(li), 1, dbg_file);
+      symbuf->n_value = bfd_get_32(abfd, (unsigned char *)&li);
+      break;
+    case N_SYM_RBRAC:
+      fread(&li, sizeof(li), 1, dbg_file);
+      symbuf->n_value = bfd_get_32(abfd, (unsigned char *)&li);
+      break;
+    case N_SYM_SE:
+      break;
+    }
+    return 1;
+}
+
+/* Given pointers to an a.out symbol table in core containing dbx
+   style data, setup partial_symtab's describing each source file for
+   which debugging information is available.
+   SYMFILE_NAME is the name of the file we are reading from
+   and SECTION_OFFSETS is the set of offsets for the various sections
+   of the file (a set of zeros if the mainline program).  */
+
+static void
+read_os9k_psymtab (section_offsets, objfile, text_addr, text_size)
+     struct section_offsets *section_offsets;
+     struct objfile *objfile;
+     CORE_ADDR text_addr;
+     int text_size;
+{
+  register struct internal_symstruct *bufp = 0;	/* =0 avoids gcc -Wall glitch*/
+  register char *namestring;
+  int past_first_source_file = 0;
+  CORE_ADDR last_o_file_start = 0;
+#if 0
+  struct cleanup *back_to;
+#endif
+  bfd *abfd;
+  FILE *fp;
+
+  /* End of the text segment of the executable file.  */
+  static CORE_ADDR end_of_text_addr;
+
+  /* Current partial symtab */
+  static struct partial_symtab *pst = 0;
+
+  /* List of current psymtab's include files */
+  char **psymtab_include_list;
+  int includes_allocated;
+  int includes_used;
+
+  /* Index within current psymtab dependency list */
+  struct partial_symtab **dependency_list;
+  int dependencies_used, dependencies_allocated;
+
+  includes_allocated = 30;
+  includes_used = 0;
+  psymtab_include_list = (char **) alloca (includes_allocated *
+					   sizeof (char *));
+
+  dependencies_allocated = 30;
+  dependencies_used = 0;
+  dependency_list =
+    (struct partial_symtab **) alloca (dependencies_allocated *
+				       sizeof (struct partial_symtab *));
+
+  last_source_file = NULL;
+
+#ifdef END_OF_TEXT_DEFAULT
+  end_of_text_addr = END_OF_TEXT_DEFAULT;
+#else
+  end_of_text_addr = text_addr + section_offsets->offsets[SECT_OFF_TEXT]
+			       + text_size;	/* Relocate */
+#endif
+
+  abfd = objfile->obfd;
+  fp = objfile->auxf2; 
+  if (!fp) return;
+		
+  fread(&dbghdr.sync, sizeof(dbghdr.sync), 1, fp);
+  fread(&dbghdr.rev, sizeof(dbghdr.rev), 1, fp);
+  fread(&dbghdr.crc, sizeof(dbghdr.crc), 1, fp);
+  fread(&dbghdr.os, sizeof(dbghdr.os), 1, fp);
+  fread(&dbghdr.cpu, sizeof(dbghdr.cpu), 1, fp);
+  SWAP_DBGHDR(&dbghdr, abfd);      
+
+  symnum = 0;
+  while(1)
+    {
+    int ret;
+    long cursymoffset;
+
+      /* Get the symbol for this run and pull out some info */
+      QUIT;	/* allow this to be interruptable */
+      cursymoffset = ftell(objfile->auxf2);
+      ret = fill_sym(objfile->auxf2, abfd);
+      if (ret <= 0) break;
+      else symnum++;
+      bufp = symbuf;
+
+      /* Special case to speed up readin. */
+      if (bufp->n_type == (short)N_SYM_SLINE) continue;
+
+#define CUR_SYMBOL_VALUE bufp->n_value
+      /* partial-stab.h */
+
+      switch (bufp->n_type)
+	{
+	char *p;
+
+	case N_SYM_CMPLR:
+	  continue;
+
+	case N_SYM_SE:
+          CUR_SYMBOL_VALUE += ANOFFSET(section_offsets, SECT_OFF_TEXT);
+	  if (psymfile_depth == 1 && pst)
+	    {
+	      os9k_end_psymtab (pst, psymtab_include_list, includes_used,
+		       symnum, CUR_SYMBOL_VALUE,
+		       dependency_list, dependencies_used);
+	      pst = (struct partial_symtab *) 0;
+	      includes_used = 0;
+	      dependencies_used = 0;
+	    }
+  	  psymfile_depth--;
+	  continue;
+
+	case N_SYM_SYM:		/* Typedef or automatic variable. */
+	  namestring = bufp->n_strx;
+          p = (char *) strchr (namestring, ':');
+          if (!p)
+            continue;           /* Not a debugging symbol.   */
+
+	  /* Main processing section for debugging symbols which
+	     the initial read through the symbol tables needs to worry
+	     about.  If we reach this point, the symbol which we are
+	     considering is definitely one we are interested in.
+	     p must also contain the (valid) index into the namestring
+	     which indicates the debugging type symbol.  */
+
+	  switch (p[1])
+	    {
+	    case 'S' :
+	      {
+		unsigned long valu;
+            	enum language tmp_language;
+		char *str, *p;
+		int n;
+		
+		valu = CUR_SYMBOL_VALUE;
+		if (valu)
+		  valu += ANOFFSET (section_offsets, SECT_OFF_TEXT);
+		past_first_source_file = 1;
+
+                p = strchr(namestring, ':');
+                if (p) n = p-namestring;
+                else n = strlen(namestring);
+                str = alloca(n+1);
+                strncpy(str, namestring, n);
+                str[n] = '\0';
+
+		if (psymfile_depth == 0) {
+		  if (!pst)
+		    pst = os9k_start_psymtab (objfile, section_offsets,
+				 str, valu,
+				 cursymoffset,
+				 symnum-1,
+				 objfile -> global_psymbols.next,
+				 objfile -> static_psymbols.next);
+		} else { /* this is a include file */
+            	  tmp_language = deduce_language_from_filename (str);
+            	  if (tmp_language != language_unknown
+                	&& (tmp_language != language_c
+                    	|| psymtab_language != language_cplus))
+              		psymtab_language = tmp_language;
+
+/*
+		  if (pst && STREQ (str, pst->filename))
+		    continue;
+		  {
+		    register int i;
+		    for (i = 0; i < includes_used; i++)
+		      if (STREQ (str, psymtab_include_list[i]))
+			{
+			  i = -1; 
+			  break;
+			}
+		    if (i == -1)
+		      continue;
+		  }
+*/
+
+                  psymtab_include_list[includes_used++] = str;
+                  if (includes_used >= includes_allocated)
+                    {
+                      char **orig = psymtab_include_list;
+
+                      psymtab_include_list = (char **)
+                	  alloca ((includes_allocated *= 2) * sizeof (char *));
+                      memcpy ((PTR)psymtab_include_list, (PTR)orig,
+                          includes_used * sizeof (char *));
+              	    }
+
+		}
+  		psymfile_depth++;
+		continue;
+	      }
+
+	    case 'v':
+	      add_psymbol_to_list (namestring, p - namestring,
+				   VAR_NAMESPACE, LOC_STATIC,
+				   &objfile->static_psymbols,
+				   0, CUR_SYMBOL_VALUE,
+				   psymtab_language, objfile);
+	      continue;
+	    case 'V':
+	      add_psymbol_to_list (namestring, p - namestring,
+				   VAR_NAMESPACE, LOC_STATIC,
+				   &objfile->global_psymbols,
+				   0, CUR_SYMBOL_VALUE,
+				   psymtab_language, objfile);
+	      continue;
+
+	    case 'T':
+	      if (p != namestring)	/* a name is there, not just :T... */
+		{
+		  add_psymbol_to_list (namestring, p - namestring,
+				       STRUCT_NAMESPACE, LOC_TYPEDEF,
+				       &objfile->static_psymbols,
+				       CUR_SYMBOL_VALUE, 0,
+				       psymtab_language, objfile);
+		  if (p[2] == 't')
+		    {
+		      /* Also a typedef with the same name.  */
+		      add_psymbol_to_list (namestring, p - namestring,
+					   VAR_NAMESPACE, LOC_TYPEDEF,
+					   &objfile->static_psymbols,
+					   CUR_SYMBOL_VALUE, 0, psymtab_language,
+					   objfile);
+		      p += 1;
+		    }
+		  /* The semantics of C++ state that "struct foo { ... }"
+		     also defines a typedef for "foo".  Unfortuantely, cfront
+		     never makes the typedef when translating from C++ to C.
+		     We make the typedef here so that "ptype foo" works as
+		     expected for cfront translated code.  */
+		  else if (psymtab_language == language_cplus)
+		   {
+		      /* Also a typedef with the same name.  */
+		      add_psymbol_to_list (namestring, p - namestring,
+					   VAR_NAMESPACE, LOC_TYPEDEF,
+					   &objfile->static_psymbols,
+					   CUR_SYMBOL_VALUE, 0, psymtab_language,
+					   objfile);
+		   }
+		}
+	      goto check_enum;
+	    case 't':
+	      if (p != namestring)	/* a name is there, not just :T... */
+		{
+		  add_psymbol_to_list (namestring, p - namestring,
+				       VAR_NAMESPACE, LOC_TYPEDEF,
+				       &objfile->static_psymbols,
+				       CUR_SYMBOL_VALUE, 0,
+				       psymtab_language, objfile);
+		}
+	    check_enum:
+	      /* If this is an enumerated type, we need to
+		 add all the enum constants to the partial symbol
+		 table.  This does not cover enums without names, e.g.
+		 "enum {a, b} c;" in C, but fortunately those are
+		 rare.  There is no way for GDB to find those from the
+		 enum type without spending too much time on it.  Thus
+		 to solve this problem, the compiler needs to put out the
+		 enum in a nameless type.  GCC2 does this.  */
+
+	      /* We are looking for something of the form
+		 <name> ":" ("t" | "T") [<number> "="] "e" <size>
+		 {<constant> ":" <value> ","} ";".  */
+
+	      /* Skip over the colon and the 't' or 'T'.  */
+	      p += 2;
+	      /* This type may be given a number.  Also, numbers can come
+		 in pairs like (0,26).  Skip over it.  */
+	      while ((*p >= '0' && *p <= '9')
+		     || *p == '(' || *p == ',' || *p == ')'
+		     || *p == '=')
+		p++;
+
+	      if (*p++ == 'e')
+		{
+		  /* We have found an enumerated type. skip size */
+	          while (*p >= '0' && *p <= '9') p++;
+		  /* According to comments in read_enum_type
+		     a comma could end it instead of a semicolon.
+		     I don't know where that happens.
+		     Accept either.  */
+		  while (*p && *p != ';' && *p != ',')
+		    {
+		      char *q;
+
+		      /* Check for and handle cretinous dbx symbol name
+			 continuation! 
+		      if (*p == '\\')
+			p = next_symbol_text (objfile);
+		      */
+
+		      /* Point to the character after the name
+			 of the enum constant.  */
+		      for (q = p; *q && *q != ':'; q++)
+			;
+		      /* Note that the value doesn't matter for
+			 enum constants in psymtabs, just in symtabs.  */
+		      add_psymbol_to_list (p, q - p,
+					   VAR_NAMESPACE, LOC_CONST,
+					   &objfile->static_psymbols, 0,
+					   0, psymtab_language, objfile);
+		      /* Point past the name.  */
+		      p = q;
+		      /* Skip over the value.  */
+		      while (*p && *p != ',')
+			p++;
+		      /* Advance past the comma.  */
+		      if (*p)
+			p++;
+		    }
+		}
+	      continue;
+	    case 'c':
+	      /* Constant, e.g. from "const" in Pascal.  */
+	      add_psymbol_to_list (namestring, p - namestring,
+				   VAR_NAMESPACE, LOC_CONST,
+				   &objfile->static_psymbols, CUR_SYMBOL_VALUE,
+				   0, psymtab_language, objfile);
+	      continue;
+
+	    case 'f':
+	      CUR_SYMBOL_VALUE += ANOFFSET(section_offsets, SECT_OFF_TEXT);
+              if (pst && pst->textlow == 0)
+                pst->textlow = CUR_SYMBOL_VALUE;
+
+	      add_psymbol_to_list (namestring, p - namestring,
+				   VAR_NAMESPACE, LOC_BLOCK,
+				   &objfile->static_psymbols, CUR_SYMBOL_VALUE,
+				   0, psymtab_language, objfile);
+	      continue;
+
+	    case 'F':
+	      CUR_SYMBOL_VALUE += ANOFFSET(section_offsets, SECT_OFF_TEXT);
+              if (pst && pst->textlow == 0)
+                pst->textlow = CUR_SYMBOL_VALUE;
+
+	      add_psymbol_to_list (namestring, p - namestring,
+				   VAR_NAMESPACE, LOC_BLOCK,
+				   &objfile->global_psymbols, CUR_SYMBOL_VALUE,
+				   0, psymtab_language, objfile);
+	      continue;
+
+	    case 'p':
+	    case 'l':
+            case 's':
+	      continue;
+
+	    case ':':
+	      /* It is a C++ nested symbol.  We don't need to record it
+		 (I don't think); if we try to look up foo::bar::baz,
+		 then symbols for the symtab containing foo should get
+		 read in, I think.  */
+	      /* Someone says sun cc puts out symbols like
+		 /foo/baz/maclib::/usr/local/bin/maclib,
+		 which would get here with a symbol type of ':'.  */
+	      continue;
+
+	    default:
+	      /* Unexpected symbol descriptor.  The second and subsequent stabs
+		 of a continued stab can show up here.  The question is
+		 whether they ever can mimic a normal stab--it would be
+		 nice if not, since we certainly don't want to spend the
+		 time searching to the end of every string looking for
+		 a backslash.  */
+
+	      complain (&unknown_symchar_complaint, p[1]);
+	      continue;
+	    }
+
+	case N_SYM_RBRAC:
+	  CUR_SYMBOL_VALUE += ANOFFSET(section_offsets, SECT_OFF_TEXT);
+#ifdef HANDLE_RBRAC
+	  HANDLE_RBRAC(CUR_SYMBOL_VALUE);
+	  continue;
+#endif
+	case N_SYM_LBRAC:
+	  continue;
+
+	default:
+	  /* If we haven't found it yet, ignore it.  It's probably some
+	     new type we don't know about yet.  */
+	  complain (&unknown_symtype_complaint,
+		    local_hex_string ((unsigned long) bufp->n_type));
+	  continue;
+	}
+    }
+
+  DBX_SYMCOUNT (objfile) = symnum;
+
+  /* If there's stuff to be cleaned up, clean it up.  */
+  if (DBX_SYMCOUNT (objfile) > 0
+/*FIXME, does this have a bug at start address 0? */
+      && last_o_file_start
+      && objfile -> ei.entry_point < bufp->n_value
+      && objfile -> ei.entry_point >= last_o_file_start)
+    {
+      objfile -> ei.entry_file_lowpc = last_o_file_start;
+      objfile -> ei.entry_file_highpc = bufp->n_value;
+    }
+
+  if (pst)
+    {
+      os9k_end_psymtab (pst, psymtab_include_list, includes_used,
+		   symnum, end_of_text_addr,
+		   dependency_list, dependencies_used);
+    }
+/*
+  do_cleanups (back_to);
+*/
+}
+
+/* Allocate and partially fill a partial symtab.  It will be
+   completely filled at the end of the symbol list.
+
+   SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
+   is the address relative to which its symbols are (incremental) or 0
+   (normal). */
+
+
+static struct partial_symtab *
+os9k_start_psymtab (objfile, section_offsets,
+	       filename, textlow, ldsymoff,ldsymcnt,  global_syms, static_syms)
+     struct objfile *objfile;
+     struct section_offsets *section_offsets;
+     char *filename;
+     CORE_ADDR textlow;
+     int ldsymoff;
+     int ldsymcnt;
+     struct partial_symbol **global_syms;
+     struct partial_symbol **static_syms;
+{
+  struct partial_symtab *result =
+      start_psymtab_common(objfile, section_offsets,
+			   filename, textlow, global_syms, static_syms);
+
+  result->read_symtab_private = (char *)
+    obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc));
+
+  LDSYMOFF(result) = ldsymoff;
+  LDSYMCNT(result) = ldsymcnt;
+  result->read_symtab = os9k_psymtab_to_symtab;
+
+  /* Deduce the source language from the filename for this psymtab. */
+  psymtab_language = deduce_language_from_filename (filename);
+  return result;
+}
+
+/* Close off the current usage of PST.  
+   Returns PST or NULL if the partial symtab was empty and thrown away.
+   FIXME:  List variables and peculiarities of same.  */
+
+static struct partial_symtab *
+os9k_end_psymtab (pst, include_list, num_includes, capping_symbol_cnt,
+	     capping_text, dependency_list, number_dependencies)
+     struct partial_symtab *pst;
+     char **include_list;
+     int num_includes;
+     int capping_symbol_cnt;
+     CORE_ADDR capping_text;
+     struct partial_symtab **dependency_list;
+     int number_dependencies;
+     /* struct partial_symbol *capping_global, *capping_static; */
+{
+  int i;
+  struct partial_symtab *p1;
+  struct objfile *objfile = pst -> objfile;
+
+  if (capping_symbol_cnt != -1)
+      LDSYMCNT(pst) = capping_symbol_cnt - LDSYMCNT(pst);
+
+  /* Under Solaris, the N_SO symbols always have a value of 0,
+     instead of the usual address of the .o file.  Therefore,
+     we have to do some tricks to fill in texthigh and textlow.
+     The first trick is in partial-stab.h: if we see a static
+     or global function, and the textlow for the current pst
+     is still 0, then we use that function's address for 
+     the textlow of the pst.
+
+     Now, to fill in texthigh, we remember the last function seen
+     in the .o file (also in partial-stab.h).  Also, there's a hack in
+     bfd/elf.c and gdb/elfread.c to pass the ELF st_size field
+     to here via the misc_info field.  Therefore, we can fill in
+     a reliable texthigh by taking the address plus size of the
+     last function in the file.
+
+     Unfortunately, that does not cover the case where the last function
+     in the file is static.  See the paragraph below for more comments
+     on this situation.
+
+     Finally, if we have a valid textlow for the current file, we run
+     down the partial_symtab_list filling in previous texthighs that
+     are still unknown.  */
+
+  if (pst->texthigh == 0 && last_function_name) {
+    char *p;
+    int n;
+    struct minimal_symbol *minsym;
+
+    p = strchr (last_function_name, ':');
+    if (p == NULL)
+      p = last_function_name;
+    n = p - last_function_name;
+    p = alloca (n + 1);
+    strncpy (p, last_function_name, n);
+    p[n] = 0;
+    
+    minsym = lookup_minimal_symbol (p, NULL, objfile);
+
+    if (minsym) {
+      pst->texthigh = SYMBOL_VALUE_ADDRESS(minsym)+(long)MSYMBOL_INFO(minsym);
+    } else {
+      /* This file ends with a static function, and it's
+	 difficult to imagine how hard it would be to track down
+	 the elf symbol.  Luckily, most of the time no one will notice,
+	 since the next file will likely be compiled with -g, so
+	 the code below will copy the first fuction's start address 
+	 back to our texthigh variable.  (Also, if this file is the
+	 last one in a dynamically linked program, texthigh already
+	 has the right value.)  If the next file isn't compiled
+	 with -g, then the last function in this file winds up owning
+	 all of the text space up to the next -g file, or the end (minus
+	 shared libraries).  This only matters for single stepping,
+	 and even then it will still work, except that it will single
+	 step through all of the covered functions, instead of setting
+	 breakpoints around them as it usualy does.  This makes it
+	 pretty slow, but at least it doesn't fail.
+
+	 We can fix this with a fairly big change to bfd, but we need
+	 to coordinate better with Cygnus if we want to do that.  FIXME.  */
+    }
+    last_function_name = NULL;
+  }
+
+  /* this test will be true if the last .o file is only data */
+  if (pst->textlow == 0)
+    pst->textlow = pst->texthigh;
+
+  /* If we know our own starting text address, then walk through all other
+     psymtabs for this objfile, and if any didn't know their ending text
+     address, set it to our starting address.  Take care to not set our
+     own ending address to our starting address, nor to set addresses on
+     `dependency' files that have both textlow and texthigh zero.  */
+  if (pst->textlow) {
+    ALL_OBJFILE_PSYMTABS (objfile, p1) {
+      if (p1->texthigh == 0  && p1->textlow != 0 && p1 != pst) {
+	p1->texthigh = pst->textlow;
+	/* if this file has only data, then make textlow match texthigh */
+	if (p1->textlow == 0)
+	  p1->textlow = p1->texthigh;
+      }
+    }
+  }
+
+  /* End of kludge for patching Solaris textlow and texthigh.  */
+
+  pst->n_global_syms =
+    objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset);
+  pst->n_static_syms =
+    objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset);
+
+  pst->number_of_dependencies = number_dependencies;
+  if (number_dependencies)
+    {
+      pst->dependencies = (struct partial_symtab **)
+	obstack_alloc (&objfile->psymbol_obstack,
+		       number_dependencies * sizeof (struct partial_symtab *));
+      memcpy (pst->dependencies, dependency_list,
+	     number_dependencies * sizeof (struct partial_symtab *));
+    }
+  else
+    pst->dependencies = 0;
+
+  for (i = 0; i < num_includes; i++)
+    {
+      struct partial_symtab *subpst =
+	allocate_psymtab (include_list[i], objfile);
+
+      subpst->section_offsets = pst->section_offsets;
+      subpst->read_symtab_private =
+	  (char *) obstack_alloc (&objfile->psymbol_obstack,
+				  sizeof (struct symloc));
+      LDSYMOFF(subpst) =
+	LDSYMCNT(subpst) =
+	  subpst->textlow =
+	    subpst->texthigh = 0;
+
+      /* We could save slight bits of space by only making one of these,
+	 shared by the entire set of include files.  FIXME-someday.  */
+      subpst->dependencies = (struct partial_symtab **)
+	obstack_alloc (&objfile->psymbol_obstack,
+		       sizeof (struct partial_symtab *));
+      subpst->dependencies[0] = pst;
+      subpst->number_of_dependencies = 1;
+
+      subpst->globals_offset =
+	subpst->n_global_syms =
+	  subpst->statics_offset =
+	    subpst->n_static_syms = 0;
+
+      subpst->readin = 0;
+      subpst->symtab = 0;
+      subpst->read_symtab = pst->read_symtab;
+    }
+
+  sort_pst_symbols (pst);
+
+  /* If there is already a psymtab or symtab for a file of this name, 
+     remove it.
+     (If there is a symtab, more drastic things also happen.)
+     This happens in VxWorks.  */
+  free_named_symtabs (pst->filename);
+
+  if (num_includes == 0
+   && number_dependencies == 0
+   && pst->n_global_syms == 0
+   && pst->n_static_syms == 0) {
+    /* Throw away this psymtab, it's empty.  We can't deallocate it, since
+       it is on the obstack, but we can forget to chain it on the list.  */
+    /* Indicate that psymtab was thrown away.  */
+
+    discard_psymtab (pst);
+
+    pst = (struct partial_symtab *)NULL;
+  }
+  return pst;
+}
+
+static void
+os9k_psymtab_to_symtab_1 (pst)
+     struct partial_symtab *pst;
+{
+  struct cleanup *old_chain;
+  int i;
+  
+  if (!pst)
+    return;
+
+  if (pst->readin)
+    {
+      fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in.  Shouldn't happen.\n",
+	       pst->filename);
+      return;
+    }
+
+  /* Read in all partial symtabs on which this one is dependent */
+  for (i = 0; i < pst->number_of_dependencies; i++)
+    if (!pst->dependencies[i]->readin)
+      {
+	/* Inform about additional files that need 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);
+	  }
+	os9k_psymtab_to_symtab_1 (pst->dependencies[i]);
+      }
+
+  if (LDSYMCNT(pst))		/* Otherwise it's a dummy */
+    {
+      /* Init stuff necessary for reading in symbols */
+      stabsread_init ();
+      buildsym_init ();
+      old_chain = make_cleanup ((make_cleanup_func) really_free_pendings, 0);
+
+      /* Read in this file's symbols */
+      os9k_read_ofile_symtab (pst);
+      sort_symtab_syms (pst->symtab);
+      do_cleanups (old_chain);
+    }
+
+  pst->readin = 1;
+}
+
+/* Read in all of the symbols for a given psymtab for real.
+   Be verbose about it if the user wants that.  */
+
+static void
+os9k_psymtab_to_symtab (pst)
+     struct partial_symtab *pst;
+{
+  bfd *sym_bfd;
+
+  if (!pst)
+    return;
+
+  if (pst->readin)
+    {
+      fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in.  Shouldn't happen.\n",
+	       pst->filename);
+      return;
+    }
+
+  if (LDSYMCNT(pst) || pst->number_of_dependencies)
+    {
+      /* Print the message now, before reading the string table,
+	 to avoid disconcerting pauses.  */
+      if (info_verbose)
+	{
+	  printf_filtered ("Reading in symbols for %s...", pst->filename);
+	  gdb_flush (gdb_stdout);
+	}
+
+      sym_bfd = pst->objfile->obfd;
+      os9k_psymtab_to_symtab_1 (pst);
+
+      /* 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);
+
+      /* Finish up the debug error message.  */
+      if (info_verbose)
+	printf_filtered ("done.\n");
+    }
+}
+
+/* Read in a defined section of a specific object file's symbols. */
+static void
+os9k_read_ofile_symtab (pst)
+     struct partial_symtab *pst;
+{
+  register struct internal_symstruct *bufp;
+  unsigned char type;
+  unsigned max_symnum;
+  register bfd *abfd;
+  struct objfile *objfile;
+  int sym_offset;		/* Offset to start of symbols to read */
+  CORE_ADDR text_offset;	/* Start of text segment for symbols */
+  int text_size;		/* Size of text segment for symbols */
+  struct section_offsets *section_offsets;
+  FILE *dbg_file;
+
+  objfile = pst->objfile;
+  sym_offset = LDSYMOFF(pst);
+  max_symnum = LDSYMCNT(pst);
+  text_offset = pst->textlow;
+  text_size = pst->texthigh - pst->textlow;
+  section_offsets = pst->section_offsets;
+
+  current_objfile = objfile;
+  subfile_stack = NULL;
+  last_source_file = NULL;
+
+  abfd = objfile->obfd;
+  dbg_file = objfile->auxf2;
+
+#if 0
+  /* It is necessary to actually read one symbol *before* the start
+     of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL
+     occurs before the N_SO symbol.
+     Detecting this in read_dbx_symtab
+     would slow down initial readin, so we look for it here instead. */
+  if (!processing_acc_compilation && sym_offset >= (int)symbol_size)
+    {
+      fseek (objefile->auxf2, sym_offset, SEEK_CUR);
+      fill_sym(objfile->auxf2, abfd);
+      bufp = symbuf;
+
+      processing_gcc_compilation = 0;
+      if (bufp->n_type == N_TEXT)
+	{
+	  if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL))
+	    processing_gcc_compilation = 1;
+	  else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL))
+	    processing_gcc_compilation = 2;
+	}
+
+      /* Try to select a C++ demangling based on the compilation unit
+	 producer. */
+
+      if (processing_gcc_compilation)
+	{
+	  if (AUTO_DEMANGLING)
+	    {
+	      set_demangling_style (GNU_DEMANGLING_STYLE_STRING);
+	    }
+	}
+    }
+  else
+    {
+      /* The N_SO starting this symtab is the first symbol, so we
+	 better not check the symbol before it.  I'm not this can
+	 happen, but it doesn't hurt to check for it.  */
+      bfd_seek (symfile_bfd, sym_offset, SEEK_CUR);
+      processing_gcc_compilation = 0;
+    }
+#endif /* 0 */
+
+  fseek(dbg_file, (long)sym_offset, 0);
+/*
+  if (bufp->n_type != (unsigned char)N_SYM_SYM)
+    error("First symbol in segment of executable not a source symbol");
+*/
+
+  for (symnum = 0; symnum < max_symnum; symnum++)
+    {
+      QUIT;			/* Allow this to be interruptable */
+      fill_sym(dbg_file, abfd);
+      bufp = symbuf;
+      type = bufp->n_type;
+
+      os9k_process_one_symbol ((int)type, (int)bufp->n_desc, 
+      (CORE_ADDR)bufp->n_value, bufp->n_strx, section_offsets, objfile);
+
+      /* We skip checking for a new .o or -l file; that should never
+         happen in this routine. */
+#if 0
+      else if (type == N_TEXT)
+	{
+	  /* I don't think this code will ever be executed, because
+	     the GCC_COMPILED_FLAG_SYMBOL usually is right before
+	     the N_SO symbol which starts this source file.
+	     However, there is no reason not to accept
+	     the GCC_COMPILED_FLAG_SYMBOL anywhere.  */
+
+	  if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL))
+	    processing_gcc_compilation = 1;
+	  else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL))
+	    processing_gcc_compilation = 2;
+
+	  if (AUTO_DEMANGLING)
+	    {
+	      set_demangling_style (GNU_DEMANGLING_STYLE_STRING);
+	    }
+	}
+      else if (type & N_EXT || type == (unsigned char)N_TEXT
+	       || type == (unsigned char)N_NBTEXT
+	       ) {
+	  /* Global symbol: see if we came across a dbx defintion for
+	     a corresponding symbol.  If so, store the value.  Remove
+	     syms from the chain when their values are stored, but
+	     search the whole chain, as there may be several syms from
+	     different files with the same name. */
+	  /* This is probably not true.  Since the files will be read
+	     in one at a time, each reference to a global symbol will
+	     be satisfied in each file as it appears. So we skip this
+	     section. */
+	  ;
+        }
+#endif /* 0 */
+    }
+
+  current_objfile = NULL;
+
+  /* In a Solaris elf file, this variable, which comes from the
+     value of the N_SO symbol, will still be 0.  Luckily, text_offset,
+     which comes from pst->textlow is correct. */
+  if (last_source_start_addr == 0)
+    last_source_start_addr = text_offset;
+  pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT);
+  end_stabs ();
+}
+
+
+/* This handles a single symbol from the symbol-file, building symbols
+   into a GDB symtab.  It takes these arguments and an implicit argument.
+
+   TYPE is the type field of the ".stab" symbol entry.
+   DESC is the desc field of the ".stab" entry.
+   VALU is the value field of the ".stab" entry.
+   NAME is the symbol name, in our address space.
+   SECTION_OFFSETS is a set of amounts by which the sections of this object
+          file were relocated when it was loaded into memory.
+          All symbols that refer
+	  to memory locations need to be offset by these amounts.
+   OBJFILE is the object file from which we are reading symbols.
+ 	       It is used in end_symtab.  */
+
+static void
+os9k_process_one_symbol (type, desc, valu, name, section_offsets, objfile)
+     int type, desc;
+     CORE_ADDR valu;
+     char *name;
+     struct section_offsets *section_offsets;
+     struct objfile *objfile;
+{
+  register struct context_stack *new;
+  /* The stab type used for the definition of the last function.
+     N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers.  */
+  static int function_stab_type = 0;
+
+#if 0
+  /* Something is wrong if we see real data before
+     seeing a source file name.  */
+  if (last_source_file == NULL && type != (unsigned char)N_SO)
+    {
+      /* Ignore any symbols which appear before an N_SO symbol.
+	 Currently no one puts symbols there, but we should deal
+	 gracefully with the case.  A complain()t might be in order,
+	 but this should not be an error ().  */
+      return;
+    }
+#endif /* 0 */
+
+  switch (type)
+    {
+    case N_SYM_LBRAC:
+      /* On most machines, the block addresses are relative to the
+	 N_SO, the linker did not relocate them (sigh).  */
+      valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); 
+      new = push_context (desc, valu);
+      break;
+
+    case N_SYM_RBRAC:
+      valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); 
+      new = pop_context();
+
+#if !defined (OS9K_VARIABLES_INSIDE_BLOCK)
+#define OS9K_VARIABLES_INSIDE_BLOCK(desc, gcc_p) 1
+#endif
+
+      if (!OS9K_VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation))
+	local_symbols = new->locals;
+
+      if (context_stack_depth > 1)
+	{
+	  /* This is not the outermost LBRAC...RBRAC pair in the function,
+	     its local symbols preceded it, and are the ones just recovered
+	     from the context stack.  Define the block for them (but don't
+	     bother if the block contains no symbols.  Should we complain
+	     on blocks without symbols?  I can't think of any useful purpose
+	     for them).  */
+	  if (local_symbols != NULL)
+	    {
+	      /* Muzzle a compiler bug that makes end < start.  (which
+		 compilers?  Is this ever harmful?).  */
+	      if (new->start_addr > valu)
+		{
+		  complain (&lbrac_rbrac_complaint);
+		  new->start_addr = valu;
+		}
+	      /* Make a block for the local symbols within.  */
+	      finish_block (0, &local_symbols, new->old_blocks,
+			    new->start_addr, valu, objfile);
+	    }
+	}
+      else
+	{
+	  if (context_stack_depth == 0)
+	    {
+	      within_function = 0;
+	      /* Make a block for the local symbols within.  */
+	      finish_block (new->name, &local_symbols, new->old_blocks,
+			new->start_addr, valu, objfile);
+	    }
+	  else
+	    {
+	      /* attach local_symbols to the end of new->locals */
+	      if (!new->locals) new->locals = local_symbols;
+	      else {
+		struct pending *p;
+
+	        p = new->locals;
+	        while (p->next) p = p->next; 
+	        p->next = local_symbols;
+	      }
+	    }
+	}
+
+      if (OS9K_VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation))
+	/* Now pop locals of block just finished.  */
+	local_symbols = new->locals;
+      break;
+
+
+    case N_SYM_SLINE:
+      /* This type of "symbol" really just records
+	 one line-number -- core-address correspondence.
+	 Enter it in the line list for this symbol table. */
+      /* Relocate for dynamic loading and for ELF acc fn-relative syms.  */
+      valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); 
+      /* FIXME: loses if sizeof (char *) > sizeof (int) */
+      record_line (current_subfile, (int)name, valu);
+      break;
+
+    /* The following symbol types need to have the appropriate offset added
+       to their value; then we process symbol definitions in the name.  */
+    case N_SYM_SYM:
+
+      if (name)
+	{
+	  char deftype;
+	  char *dirn, *n;
+	  char *p = strchr (name, ':');
+	  if (p == NULL)
+	    deftype = '\0';
+	  else
+	    deftype = p[1];
+
+
+	  switch (deftype)
+	    {
+	    case 'S':
+      	      valu += ANOFFSET (section_offsets, SECT_OFF_TEXT);
+	      n = strrchr(name, '/');
+	      if (n != NULL) {
+		*n = '\0';
+		n++;
+		dirn = name;
+	      } else {
+		n = name;
+		dirn = NULL;
+	      }
+	      *p = '\0';
+	      if (symfile_depth++ == 0) {
+		if (last_source_file) {
+          	  end_symtab (valu, objfile, SECT_OFF_TEXT);
+		  end_stabs ();
+		}
+		start_stabs ();
+		os9k_stabs = 1;
+		start_symtab (n, dirn, valu);
+		record_debugformat ("OS9");
+	      } else {
+		push_subfile();
+		start_subfile (n, dirn!=NULL ? dirn : current_subfile->dirname);
+	      }
+	      break;
+
+	    case 'f':
+	    case 'F':
+              valu += ANOFFSET (section_offsets, SECT_OFF_TEXT);
+	      function_stab_type = type;
+
+	      within_function = 1;
+	      new = push_context (0, valu);
+	      new->name = define_symbol (valu, name, desc, type, objfile);
+	      break;
+
+	    case 'V':
+	    case 'v':
+              valu += ANOFFSET (section_offsets, SECT_OFF_DATA);
+	      define_symbol (valu, name, desc, type, objfile);
+	      break;
+
+	    default:
+	      define_symbol (valu, name, desc, type, objfile);
+	      break;
+	    }
+	}
+      break;
+
+    case N_SYM_SE:
+	if (--symfile_depth != 0)
+	  start_subfile(pop_subfile(), current_subfile->dirname);
+      break;
+
+    default:
+      complain (&unknown_symtype_complaint,
+		local_hex_string((unsigned long) type));
+      /* FALLTHROUGH */
+      break;
+
+    case N_SYM_CMPLR:
+      break;
+    }
+  previous_stab_code = type;
+}
+
+static struct sym_fns os9k_sym_fns =
+{
+  bfd_target_os9k_flavour,
+  os9k_new_init,	/* sym_new_init: init anything gbl to entire symtab */
+  os9k_symfile_init,	/* sym_init: read initial info, setup for sym_read() */
+  os9k_symfile_read,	/* sym_read: read a symbol file into symtab */
+  os9k_symfile_finish,	/* sym_finish: finished with file, cleanup */
+  default_symfile_offsets,
+			/* sym_offsets: parse user's offsets to internal form*/
+  NULL			/* next: pointer to next struct sym_fns */
+};
+
+void
+_initialize_os9kread ()
+{
+  add_symtab_fns(&os9k_sym_fns);
+}