Implement generic debugging support. Implement a stabs reader and

	a generic printer.
	* budbg.h, debug.c, debug.h, prdbg.c, rddbg.c, stabs.c: New files.
	* objdump.c: Include "debug.h" and "budbg.h".
	(dump_debugging): New global variable.
	(usage): Mention --debugging.
	(long_options): Add "debugging".
	(display_bfd): Handle --debugging.
	* Makefile.in (OBJDUMP_OBJS): New variable.
	($(OBJDUMP_PROG)): Use $(OBJDUMP_OBJS).
	* binutils.texi, objdump.1: Document --debugging.

1 files changed, 2572 insertions, 0 deletions

diff --git a/binutils/debug.c b/binutils/debug.c
new file mode 100644
index 0000000..18eb529
--- /dev/null
+++ b/binutils/debug.c
@@ -0,0 +1,2572 @@
+/* debug.c -- Handle generic debugging information.
+   Copyright (C) 1995 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor <ian@cygnus.com>.
+
+   This file is part of GNU Binutils.
+
+   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 file implements a generic debugging format.  We may eventually
+   have readers which convert different formats into this generic
+   format, and writers which write it out.  The initial impetus for
+   this was writing a convertor from stabs to HP IEEE-695 debugging
+   format.  */
+
+#include <stdio.h>
+#include <assert.h>
+
+#include "bfd.h"
+#include "bucomm.h"
+#include "libiberty.h"
+#include "debug.h"
+
+/* Global information we keep for debugging.  A pointer to this
+   structure is the debugging handle passed to all the routines.  */
+
+struct debug_handle
+{
+  /* A linked list of compilation units.  */
+  struct debug_unit *units;
+  /* The current compilation unit.  */
+  struct debug_unit *current_unit;
+  /* The current source file.  */
+  struct debug_file *current_file;
+  /* The current function.  */
+  struct debug_function *current_function;
+  /* The current block.  */
+  struct debug_block *current_block;
+  /* The current line number information for the current block.  */
+  struct debug_lineno *current_lineno;
+  /* Mark.  This is used by debug_write.  */
+  unsigned int mark;
+  /* Another mark used by debug_write.  */
+  unsigned int class_mark;
+};
+
+/* Information we keep for a single compilation unit.  */
+
+struct debug_unit
+{
+  /* The next compilation unit.  */
+  struct debug_unit *next;
+  /* A list of files included in this compilation unit.  The first
+     file is always the main one, and that is where the main file name
+     is stored.  */
+  struct debug_file *files;
+};
+
+/* Information kept for a single source file.  */
+
+struct debug_file
+{
+  /* The next source file in this compilation unit.  */
+  struct debug_file *next;
+  /* The name of the source file.  */
+  const char *filename;
+  /* Global functions, variables, types, etc.  */
+  struct debug_namespace *globals;
+};
+
+/* A type.  */
+
+struct debug_type
+{
+  /* Kind of type.  */
+  enum debug_type_kind kind;
+  /* Size of type (0 if not known).  */
+  unsigned int size;
+  /* Type which is a pointer to this type.  */
+  debug_type pointer;
+  /* Tagged union with additional information about the type.  */
+  union
+    {
+      /* DEBUG_KIND_INDIRECT.  */
+      struct debug_indirect_type *kindirect;
+      /* DEBUG_KIND_INT.  */
+      /* Whether the integer is unsigned.  */
+      boolean kint;
+      /* DEBUG_KIND_STRUCT, DEBUG_KIND_UNION, DEBUG_KIND_CLASS,
+         DEBUG_KIND_UNION_CLASS.  */
+      struct debug_class_type *kclass;
+      /* DEBUG_KIND_ENUM.  */
+      struct debug_enum_type *kenum;
+      /* DEBUG_KIND_POINTER.  */
+      struct debug_type *kpointer;
+      /* DEBUG_KIND_FUNCTION.  */
+      struct debug_function_type *kfunction;
+      /* DEBUG_KIND_REFERENCE.  */
+      struct debug_type *kreference;
+      /* DEBUG_KIND_RANGE.  */
+      struct debug_range_type *krange;
+      /* DEBUG_KIND_ARRAY.  */
+      struct debug_array_type *karray;
+      /* DEBUG_KIND_SET.  */
+      struct debug_set_type *kset;
+      /* DEBUG_KIND_OFFSET.  */
+      struct debug_offset_type *koffset;
+      /* DEBUG_KIND_METHOD.  */
+      struct debug_method_type *kmethod;
+      /* DEBUG_KIND_CONST.  */
+      struct debug_type *kconst;
+      /* DEBUG_KIND_VOLATILE.  */
+      struct debug_type *kvolatile;
+      /* DEBUG_KIND_NAMED, DEBUG_KIND_TAGGED.  */
+      struct debug_named_type *knamed;
+    } u;
+};
+
+/* Information kept for an indirect type.  */
+
+struct debug_indirect_type
+{
+  /* Slot where the final type will appear.  */
+  debug_type *slot;
+  /* Tag.  */
+  const char *tag;
+};
+
+/* Information kept for a struct, union, or class.  */
+
+struct debug_class_type
+{
+  /* NULL terminated array of fields.  */
+  debug_field *fields;
+  /* A mark field used to avoid recursively printing out structs.  */
+  unsigned int mark;
+  /* The remaining fields are only used for DEBUG_KIND_CLASS and
+     DEBUG_KIND_UNION_CLASS.  */
+  /* NULL terminated array of base classes.  */
+  debug_baseclass *baseclasses;
+  /* NULL terminated array of methods.  */
+  debug_method *methods;
+  /* The type of the class providing the virtual function table for
+     this class.  This may point to the type itself.  */
+  debug_type vptrbase;
+};
+
+/* Information kept for an enum.  */
+
+struct debug_enum_type
+{
+  /* NULL terminated array of names.  */
+  const char **names;
+  /* Array of corresponding values.  */
+  bfd_signed_vma *values;
+};
+
+/* Information kept for a function.  FIXME: We should be able to
+   record the parameter types.  */
+
+struct debug_function_type
+{
+  /* Return type.  */
+  debug_type return_type;
+};
+
+/* Information kept for a range.  */
+
+struct debug_range_type
+{
+  /* Range base type.  */
+  debug_type type;
+  /* Lower bound.  */
+  bfd_signed_vma lower;
+  /* Upper bound.  */
+  bfd_signed_vma upper;
+};
+
+/* Information kept for an array.  */
+
+struct debug_array_type
+{
+  /* Element type.  */
+  debug_type element_type;
+  /* Range type.  */
+  debug_type range_type;
+  /* Lower bound.  */
+  bfd_signed_vma lower;
+  /* Upper bound.  */
+  bfd_signed_vma upper;
+  /* Whether this array is really a string.  */
+  boolean stringp;
+};
+
+/* Information kept for a set.  */
+
+struct debug_set_type
+{
+  /* Base type.  */
+  debug_type type;
+  /* Whether this set is really a bitstring.  */
+  boolean bitstringp;
+};
+
+/* Information kept for an offset type (a based pointer).  */
+
+struct debug_offset_type
+{
+  /* The type the pointer is an offset from.  */
+  debug_type base_type;
+  /* The type the pointer points to.  */
+  debug_type target_type;
+};
+
+/* Information kept for a method type.  */
+
+struct debug_method_type
+{
+  /* The return type.  */
+  debug_type return_type;
+  /* The object type which this method is for.  */
+  debug_type domain_type;
+  /* A NULL terminated array of argument types.  */
+  debug_type *arg_types;
+};
+
+/* Information kept for a named type.  */
+
+struct debug_named_type
+{
+  /* Name.  */
+  struct debug_name *name;
+  /* Real type.  */
+  debug_type type;
+};
+
+/* A field in a struct or union.  */
+
+struct debug_field
+{
+  /* Name of the field.  */
+  const char *name;
+  /* Type of the field.  */
+  struct debug_type *type;
+  /* Visibility of the field.  */
+  enum debug_visibility visibility;
+  /* Whether this is a static member.  */
+  boolean static_member;
+  union
+    {
+      /* If static_member is false.  */
+      struct
+	{
+	  /* Bit position of the field in the struct.  */
+	  unsigned int bitpos;
+	  /* Size of the field in bits.  */
+	  unsigned int bitsize;
+	} f;
+      /* If static_member is true.  */
+      struct
+	{
+	  const char *physname;
+	} s;
+    } u;
+};
+
+/* A base class for an object.  */
+
+struct debug_baseclass
+{
+  /* Type of the base class.  */
+  struct debug_type *type;
+  /* Bit position of the base class in the object.  */
+  unsigned int bitpos;
+  /* Whether the base class is virtual.  */
+  boolean virtual;
+  /* Visibility of the base class.  */
+  enum debug_visibility visibility;
+};
+
+/* A method of an object.  */
+
+struct debug_method
+{
+  /* The name of the method.  */
+  const char *name;
+  /* A NULL terminated array of different types of variants.  */
+  struct debug_method_variant **variants;
+};
+
+/* The variants of a method function of an object.  These indicate
+   which method to run.  */
+
+struct debug_method_variant
+{
+  /* The argument types of the function.  */
+  const char *argtypes;
+  /* The type of the function.  */
+  struct debug_type *type;
+  /* The visibility of the function.  */
+  enum debug_visibility visibility;
+  /* Whether the function is const.  */
+  boolean constp;
+  /* Whether the function is volatile.  */
+  boolean volatilep;
+  /* The offset to the function in the virtual function table.  */
+  bfd_vma voffset;
+  /* If voffset is VOFFSET_STATIC_METHOD, this is a static method.  */
+#define VOFFSET_STATIC_METHOD (1)
+  /* Context of a virtual method function.  */
+  struct debug_type *context;
+};
+
+/* A variable.  This is the information we keep for a variable object.
+   This has no name; a name is associated with a variable in a
+   debug_name structure.  */
+
+struct debug_variable
+{
+  /* Kind of variable.  */
+  enum debug_var_kind kind;
+  /* Type.  */
+  debug_type type;
+  /* Value.  The interpretation of the value depends upon kind.  */
+  bfd_vma val;
+};
+
+/* A function.  This has no name; a name is associated with a function
+   in a debug_name structure.  */
+
+struct debug_function
+{
+  /* Return type.  */
+  debug_type return_type;
+  /* Parameter information.  */
+  struct debug_parameter *parameters;
+  /* Block information.  The first structure on the list is the main
+     block of the function, and describes function local variables.  */
+  struct debug_block *blocks;
+};
+
+/* A function parameter.  */
+
+struct debug_parameter
+{
+  /* Next parameter.  */
+  struct debug_parameter *next;
+  /* Name.  */
+  const char *name;
+  /* Type.  */
+  debug_type type;
+  /* Kind.  */
+  enum debug_parm_kind kind;
+  /* Value (meaning depends upon kind).  */
+  bfd_vma val;
+};
+
+/* A typed constant.  */
+
+struct debug_typed_constant
+{
+  /* Type.  */
+  debug_type type;
+  /* Value.  FIXME: We may eventually need to support non-integral
+     values.  */
+  bfd_vma val;
+};
+
+/* Information about a block within a function.  */
+
+struct debug_block
+{
+  /* Next block with the same parent.  */
+  struct debug_block *next;
+  /* Parent block.  */
+  struct debug_block *parent;
+  /* List of child blocks.  */
+  struct debug_block *children;
+  /* Start address of the block.  */
+  bfd_vma start;
+  /* End address of the block.  */
+  bfd_vma end;
+  /* Local variables.  */
+  struct debug_namespace *locals;
+  /* Line number information.  */
+  struct debug_lineno *linenos;
+};
+
+/* Line number information we keep for a function.  FIXME: This
+   structure is easy to create, but can be very space inefficient.  */
+
+struct debug_lineno
+{
+  /* More line number information for this block.  */
+  struct debug_lineno *next;
+  /* Source file.  */
+  struct debug_file *file;
+  /* Line numbers, terminated by a -1 or the end of the array.  */
+#define DEBUG_LINENO_COUNT 10
+  unsigned long linenos[DEBUG_LINENO_COUNT];
+  /* Addresses for the line numbers.  */
+  bfd_vma addrs[DEBUG_LINENO_COUNT];
+};
+
+/* A namespace.  This is a mapping from names to objects.  FIXME: This
+   should be implemented as a hash table.  */
+
+struct debug_namespace
+{
+  /* List of items in this namespace.  */
+  struct debug_name *list;
+  /* Pointer to where the next item in this namespace should go.  */
+  struct debug_name **tail;
+};
+
+/* Kinds of objects that appear in a namespace.  */
+
+enum debug_object_kind
+{
+  /* A type.  */
+  DEBUG_OBJECT_TYPE,
+  /* A tagged type (really a different sort of namespace).  */
+  DEBUG_OBJECT_TAG,
+  /* A variable.  */
+  DEBUG_OBJECT_VARIABLE,
+  /* A function.  */
+  DEBUG_OBJECT_FUNCTION,
+  /* An integer constant.  */
+  DEBUG_OBJECT_INT_CONSTANT,
+  /* A floating point constant.  */
+  DEBUG_OBJECT_FLOAT_CONSTANT,
+  /* A typed constant.  */
+  DEBUG_OBJECT_TYPED_CONSTANT
+};
+
+/* Linkage of an object that appears in a namespace.  */
+
+enum debug_object_linkage
+{
+  /* Local variable.  */
+  DEBUG_LINKAGE_AUTOMATIC,
+  /* Static--either file static or function static, depending upon the
+     namespace is.  */
+  DEBUG_LINKAGE_STATIC,
+  /* Global.  */
+  DEBUG_LINKAGE_GLOBAL,
+  /* No linkage.  */
+  DEBUG_LINKAGE_NONE
+};
+
+/* A name in a namespace.  */
+
+struct debug_name
+{
+  /* Next name in this namespace.  */
+  struct debug_name *next;
+  /* Name.  */
+  const char *name;
+  /* Mark.  This is used by debug_write.  */
+  unsigned int mark;
+  /* Kind of object.  */
+  enum debug_object_kind kind;
+  /* Linkage of object.  */
+  enum debug_object_linkage linkage;
+  /* Tagged union with additional information about the object.  */
+  union
+    {
+      /* DEBUG_OBJECT_TYPE.  */
+      struct debug_type *type;
+      /* DEBUG_OBJECT_TAG.  */
+      struct debug_type *tag;
+      /* DEBUG_OBJECT_VARIABLE.  */
+      struct debug_variable *variable;
+      /* DEBUG_OBJECT_FUNCTION.  */
+      struct debug_function *function;
+      /* DEBUG_OBJECT_INT_CONSTANT.  */
+      bfd_vma int_constant;
+      /* DEBUG_OBJECT_FLOAT_CONSTANT.  */
+      double float_constant;
+      /* DEBUG_OBJECT_TYPED_CONSTANT.  */
+      struct debug_typed_constant *typed_constant;
+    } u;
+};
+
+static void debug_error PARAMS ((const char *));
+static struct debug_name *debug_add_to_namespace
+  PARAMS ((struct debug_handle *, struct debug_namespace **, const char *,
+	   enum debug_object_kind, enum debug_object_linkage));
+static struct debug_name *debug_add_to_current_namespace
+  PARAMS ((struct debug_handle *, const char *, enum debug_object_kind,
+	   enum debug_object_linkage));
+static struct debug_type *debug_make_type
+  PARAMS ((struct debug_handle *, enum debug_type_kind, unsigned int));
+static boolean debug_write_name
+  PARAMS ((struct debug_handle *, const struct debug_write_fns *, PTR,
+	   struct debug_name *));
+static boolean debug_write_type
+  PARAMS ((struct debug_handle *, const struct debug_write_fns *, PTR,
+	   struct debug_type *, struct debug_name *));
+static boolean debug_write_class_type
+  PARAMS ((struct debug_handle *, const struct debug_write_fns *, PTR,
+	   struct debug_type *));
+static boolean debug_write_function
+  PARAMS ((struct debug_handle *, const struct debug_write_fns *, PTR,
+	   const char *, enum debug_object_linkage, struct debug_function *));
+static boolean debug_write_block
+  PARAMS ((struct debug_handle *, const struct debug_write_fns *, PTR,
+	   struct debug_block *));
+
+/* Issue an error message.  */
+
+static void
+debug_error (message)
+     const char *message;
+{
+  fprintf (stderr, "%s\n", message);
+}
+
+/* Add an object to a namespace.  */
+
+static struct debug_name *
+debug_add_to_namespace (info, nsp, name, kind, linkage)
+     struct debug_handle *info;
+     struct debug_namespace **nsp;
+     const char *name;
+     enum debug_object_kind kind;
+     enum debug_object_linkage linkage;
+{
+  struct debug_name *n;
+  struct debug_namespace *ns;
+
+  n = (struct debug_name *) xmalloc (sizeof *n);
+  memset (n, 0, sizeof *n);
+
+  n->name = name;
+  n->kind = kind;
+  n->linkage = linkage;
+
+  ns = *nsp;
+  if (ns == NULL)
+    {
+      ns = (struct debug_namespace *) xmalloc (sizeof *ns);
+      memset (ns, 0, sizeof *ns);
+
+      ns->tail = &ns->list;
+
+      *nsp = ns;
+    }
+
+  *ns->tail = n;
+  ns->tail = &n->next;
+
+  return n;
+}
+
+/* Add an object to the current namespace.  */
+
+static struct debug_name *
+debug_add_to_current_namespace (info, name, kind, linkage)
+     struct debug_handle *info;
+     const char *name;
+     enum debug_object_kind kind;
+     enum debug_object_linkage linkage;
+{
+  struct debug_namespace **nsp;
+
+  if (info->current_unit == NULL
+      || info->current_file == NULL)
+    {
+      debug_error ("debug_add_to_current_namespace: no current file");
+      return NULL;
+    }
+
+  if (info->current_block != NULL)
+    nsp = &info->current_block->locals;
+  else
+    nsp = &info->current_file->globals;
+
+  return debug_add_to_namespace (info, nsp, name, kind, linkage);
+}
+
+/* Return a handle for debugging information.  */
+
+PTR
+debug_init ()
+{
+  struct debug_handle *ret;
+
+  ret = (struct debug_handle *) xmalloc (sizeof *ret);
+  memset (ret, 0, sizeof *ret);
+  return (PTR) ret;
+}
+
+/* Set the source filename.  This implicitly starts a new compilation
+   unit.  */
+
+boolean
+debug_set_filename (handle, name)
+     PTR handle;
+     const char *name;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_file *nfile;
+  struct debug_unit *nunit;
+
+  if (name == NULL)
+    name = "";
+
+  nfile = (struct debug_file *) xmalloc (sizeof *nfile);
+  memset (nfile, 0, sizeof *nfile);
+
+  nfile->filename = name;
+
+  nunit = (struct debug_unit *) xmalloc (sizeof *nunit);
+  memset (nunit, 0, sizeof *nunit);
+
+  nunit->files = nfile;
+  info->current_file = nfile;
+
+  if (info->current_unit != NULL)
+    info->current_unit->next = nunit;
+  else
+    {
+      assert (info->units == NULL);
+      info->units = nunit;
+    }
+
+  info->current_unit = nunit;
+
+  info->current_function = NULL;
+  info->current_block = NULL;
+  info->current_lineno = NULL;
+
+  return true;
+}
+
+/* Append a string to the source filename.  */
+
+boolean
+debug_append_filename (handle, string)
+     PTR handle;
+     const char *string;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  char *n;
+
+  if (string == NULL)
+    string = "";
+
+  if (info->current_unit == NULL)
+    {
+      debug_error ("debug_append_filename: no current file");
+      return false;
+    }
+
+  n = (char *) xmalloc (strlen (info->current_unit->files->filename)
+			+ strlen (string)
+			+ 1);
+  sprintf (n, "%s%s", info->current_unit->files->filename, string);
+  info->current_unit->files->filename = n;
+
+  return true;
+}
+
+/* Change source files to the given file name.  This is used for
+   include files in a single compilation unit.  */
+
+boolean
+debug_start_source (handle, name)
+     PTR handle;
+     const char *name;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_file *f, **pf;
+
+  if (name == NULL)
+    name = "";
+
+  if (info->current_unit == NULL)
+    {
+      debug_error ("debug_start_source: no debug_set_filename call");
+      return false;
+    }
+
+  for (f = info->current_unit->files; f != NULL; f = f->next)
+    {
+      if (f->filename[0] == name[0]
+	  && f->filename[1] == name[1]
+	  && strcmp (f->filename, name) == 0)
+	{
+	  info->current_file = f;
+	  return true;
+	}
+    }
+
+  f = (struct debug_file *) xmalloc (sizeof *f);
+  memset (f, 0, sizeof *f);
+
+  f->filename = name;
+
+  for (pf = &info->current_file->next;
+       *pf != NULL;
+       pf = &(*pf)->next)
+    ;
+  *pf = f;
+
+  info->current_file = f;
+
+  return true;
+}
+
+/* Record a function definition.  This implicitly starts a function
+   block.  The debug_type argument is the type of the return value.
+   The boolean indicates whether the function is globally visible.
+   The bfd_vma is the address of the start of the function.  Currently
+   the parameter types are specified by calls to
+   debug_record_parameter.  FIXME: There is no way to specify nested
+   functions.  FIXME: I don't think there is any way to record where a
+   function ends.  */
+
+boolean
+debug_record_function (handle, name, return_type, global, addr)
+     PTR handle;
+     const char *name;
+     debug_type return_type;
+     boolean global;
+     bfd_vma addr;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_function *f;
+  struct debug_block *b;
+  struct debug_name *n;
+
+  if (name == NULL)
+    name = "";
+  if (return_type == NULL)
+    return false;
+
+  if (info->current_unit == NULL)
+    {
+      debug_error ("debug_record_function: no debug_set_filename call");
+      return false;
+    }
+
+  f = (struct debug_function *) xmalloc (sizeof *f);
+  memset (f, 0, sizeof *f);
+
+  f->return_type = return_type;
+
+  b = (struct debug_block *) xmalloc (sizeof *b);
+  memset (b, 0, sizeof *b);
+
+  b->start = addr;
+  b->end = (bfd_vma) -1;
+
+  f->blocks = b;
+
+  info->current_function = f;
+  info->current_block = b;
+  info->current_lineno = NULL;
+
+  /* FIXME: If we could handle nested functions, this would be the
+     place: we would want to use a different namespace.  */
+  n = debug_add_to_namespace (info,
+			      &info->current_file->globals,
+			      name,
+			      DEBUG_OBJECT_FUNCTION,
+			      (global
+			       ? DEBUG_LINKAGE_GLOBAL
+			       : DEBUG_LINKAGE_STATIC));
+  if (n == NULL)
+    return false;
+
+  n->u.function = f;
+
+  return true;
+}
+
+/* Record a parameter for the current function.  */
+
+boolean
+debug_record_parameter (handle, name, type, kind, val)
+     PTR handle;
+     const char *name;
+     debug_type type;
+     enum debug_parm_kind kind;
+     bfd_vma val;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_parameter *p, **pp;
+
+  if (name == NULL || type == NULL)
+    return false;
+
+  if (info->current_unit == NULL
+      || info->current_function == NULL)
+    {
+      debug_error ("debug_record_parameter: no current function");
+      return false;
+    }
+
+  p = (struct debug_parameter *) xmalloc (sizeof *p);
+  memset (p, 0, sizeof *p);
+
+  p->name = name;
+  p->type = type;
+  p->kind = kind;
+  p->val = val;
+
+  for (pp = &info->current_function->parameters;
+       *pp != NULL;
+       pp = &(*pp)->next)
+    ;
+  *pp = p;
+
+  return true;
+}
+
+/* End a function.  FIXME: This should handle function nesting.  */
+
+boolean
+debug_end_function (handle, addr)
+     PTR handle;
+     bfd_vma addr;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+
+  if (info->current_unit == NULL
+      || info->current_block == NULL
+      || info->current_function == NULL)
+    {
+      debug_error ("debug_end_function: no current function");
+      return false;
+    }
+
+  if (info->current_block->parent != NULL)
+    {
+      debug_error ("debug_end_function: some blocks were not closed");
+      return false;
+    }
+
+  info->current_block->end = addr;
+
+  info->current_function = NULL;
+  info->current_block = NULL;
+  info->current_lineno = NULL;
+
+  return true;
+}
+
+/* Start a block in a function.  All local information will be
+   recorded in this block, until the matching call to debug_end_block.
+   debug_start_block and debug_end_block may be nested.  The bfd_vma
+   argument is the address at which this block starts.  */
+
+boolean
+debug_start_block (handle, addr)
+     PTR handle;
+     bfd_vma addr;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_block *b, **pb;
+
+  /* We must always have a current block: debug_record_function sets
+     one up.  */
+  if (info->current_unit == NULL
+      || info->current_block == NULL)
+    {
+      debug_error ("debug_start_block: no current block");
+      return false;
+    }
+
+  b = (struct debug_block *) xmalloc (sizeof *b);
+  memset (b, 0, sizeof *b);
+
+  b->parent = info->current_block;
+  b->start = addr;
+  b->end = (bfd_vma) -1;
+
+  /* This new block is a child of the current block.  */
+  for (pb = &info->current_block->children;
+       *pb != NULL;
+       pb = &(*pb)->next)
+    ;
+  *pb = b;
+
+  info->current_block = b;
+  info->current_lineno = NULL;
+
+  return true;
+}
+
+/* Finish a block in a function.  This matches the call to
+   debug_start_block.  The argument is the address at which this block
+   ends.  */
+
+boolean
+debug_end_block (handle, addr)
+     PTR handle;
+     bfd_vma addr;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_block *parent;
+
+  if (info->current_unit == NULL
+      || info->current_block == NULL)
+    {
+      debug_error ("debug_end_block: no current block");
+      return false;
+    }
+
+  parent = info->current_block->parent;
+  if (parent == NULL)
+    {
+      debug_error ("debug_end_block: attempt to close top level block");
+      return false;
+    }
+
+  info->current_block->end = addr;
+
+  info->current_block = parent;
+  info->current_lineno = NULL;
+
+  return true;
+}
+
+/* Associate a line number in the current source file and function
+   with a given address.  */
+
+boolean
+debug_record_line (handle, lineno, addr)
+     PTR handle;
+     unsigned long lineno;
+     bfd_vma addr;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_lineno *l;
+  unsigned int i;
+
+  if (info->current_unit == NULL
+      || info->current_block == NULL)
+    {
+      debug_error ("debug_record_line: no current block");
+      return false;
+    }
+
+  l = info->current_lineno;
+  if (l != NULL && l->file == info->current_file)
+    {
+      for (i = 0; i < DEBUG_LINENO_COUNT; i++)
+	{
+	  if (l->linenos[i] == (unsigned long) -1)
+	    {
+	      l->linenos[i] = lineno;
+	      l->addrs[i] = addr;
+	      return true;
+	    }
+	}
+    }
+
+  /* If we get here, then either 1) there is no current_lineno
+     structure, which means this is the first line number since we got
+     to this block, 2) the current_lineno structure is for a different
+     file, or 3) the current_lineno structure is full.  Regardless, we
+     want to allocate a new debug_lineno structure, put it in the
+     right place, and make it the new current_lineno structure.  */
+
+  l = (struct debug_lineno *) xmalloc (sizeof *l);
+  memset (l, 0, sizeof *l);
+
+  l->file = info->current_file;
+  l->linenos[0] = lineno;
+  l->addrs[0] = addr;
+  for (i = 1; i < DEBUG_LINENO_COUNT; i++)
+    l->linenos[i] = (unsigned long) -1;
+
+  if (info->current_lineno != NULL)
+    info->current_lineno->next = l;
+  else
+    {
+      struct debug_lineno **pl;
+
+      /* We may be back in this block after dealing with child blocks,
+         which means we may have some line number information for this
+         block even though current_lineno was NULL.  */
+      for (pl = &info->current_block->linenos;
+	   *pl != NULL;
+	   pl = &(*pl)->next)
+	;
+      *pl = l;
+    }
+
+  info->current_lineno = l;
+
+  return true;
+}
+
+/* Start a named common block.  This is a block of variables that may
+   move in memory.  */
+
+boolean
+debug_start_common_block (handle, name)
+     PTR handle;
+     const char *name;
+{
+  /* FIXME */
+  debug_error ("debug_start_common_block: not implemented");
+  return false;
+}
+
+/* End a named common block.  */
+
+boolean
+debug_end_common_block (handle, name)
+     PTR handle;
+     const char *name;
+{
+  /* FIXME */
+  debug_error ("debug_end_common_block: not implemented");
+  return false;
+}
+
+/* Record a named integer constant.  */
+
+boolean
+debug_record_int_const (handle, name, val)
+     PTR handle;
+     const char *name;
+     bfd_vma val;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_name *n;
+
+  if (name == NULL)
+    return false;
+
+  n = debug_add_to_current_namespace (info, name, DEBUG_OBJECT_INT_CONSTANT,
+				      DEBUG_LINKAGE_NONE);
+  if (n == NULL)
+    return false;
+
+  n->u.int_constant = val;
+
+  return true;
+}
+
+/* Record a named floating point constant.  */
+
+boolean
+debug_record_float_const (handle, name, val)
+     PTR handle;
+     const char *name;
+     double val;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_name *n;
+
+  if (name == NULL)
+    return false;
+
+  n = debug_add_to_current_namespace (info, name, DEBUG_OBJECT_FLOAT_CONSTANT,
+				      DEBUG_LINKAGE_NONE);
+  if (n == NULL)
+    return false;
+
+  n->u.float_constant = val;
+
+  return true;
+}
+
+/* Record a typed constant with an integral value.  */
+
+boolean
+debug_record_typed_const (handle, name, type, val)
+     PTR handle;
+     const char *name;
+     debug_type type;
+     bfd_vma val;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_name *n;
+  struct debug_typed_constant *tc;
+
+  if (name == NULL || type == NULL)
+    return false;
+
+  n = debug_add_to_current_namespace (info, name, DEBUG_OBJECT_TYPED_CONSTANT,
+				      DEBUG_LINKAGE_NONE);
+  if (n == NULL)
+    return false;
+
+  tc = (struct debug_typed_constant *) xmalloc (sizeof *tc);
+  memset (tc, 0, sizeof *tc);
+
+  tc->type = type;
+  tc->val = val;
+
+  n->u.typed_constant = tc;
+
+  return true;
+}
+
+/* Record a label.  */
+
+boolean
+debug_record_label (handle, name, type, addr)
+     PTR handle;
+     const char *name;
+     debug_type type;
+     bfd_vma addr;
+{
+  /* FIXME.  */
+  debug_error ("debug_record_label not implemented");
+  return false;
+}
+
+/* Record a variable.  */
+
+boolean
+debug_record_variable (handle, name, type, kind, val)
+     PTR handle;
+     const char *name;
+     debug_type type;
+     enum debug_var_kind kind;
+     bfd_vma val;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_namespace **nsp;
+  enum debug_object_linkage linkage;
+  struct debug_name *n;
+  struct debug_variable *v;
+
+  if (name == NULL || type == NULL)
+    return false;
+
+  if (info->current_unit == NULL
+      || info->current_file == NULL)
+    {
+      debug_error ("debug_record_variable: no current file");
+      return false;
+    }
+
+  if (kind == DEBUG_GLOBAL || kind == DEBUG_STATIC)
+    {
+      nsp = &info->current_file->globals;
+      if (kind == DEBUG_GLOBAL)
+	linkage = DEBUG_LINKAGE_GLOBAL;
+      else
+	linkage = DEBUG_LINKAGE_STATIC;
+    }
+  else
+    {
+      if (info->current_block == NULL)
+	{
+	  debug_error ("debug_record_variable: no current block");
+	  return false;
+	}
+      nsp = &info->current_block->locals;
+      linkage = DEBUG_LINKAGE_AUTOMATIC;
+    }
+
+  n = debug_add_to_namespace (info, nsp, name, DEBUG_OBJECT_VARIABLE, linkage);
+  if (n == NULL)
+    return false;
+
+  v = (struct debug_variable *) xmalloc (sizeof *v);
+  memset (v, 0, sizeof *v);
+
+  v->kind = kind;
+  v->type = type;
+  v->val = val;
+
+  n->u.variable = v;
+
+  return true;  
+}
+
+/* Make a type with a given kind and size.  */
+
+/*ARGSUSED*/
+static struct debug_type *
+debug_make_type (info, kind, size)
+     struct debug_handle *info;
+     enum debug_type_kind kind;
+     unsigned int size;
+{
+  struct debug_type *t;
+
+  t = (struct debug_type *) xmalloc (sizeof *t);
+  memset (t, 0, sizeof *t);
+
+  t->kind = kind;
+  t->size = size;
+
+  return t;
+}
+
+/* Make an indirect type which may be used as a placeholder for a type
+   which is referenced before it is defined.  */
+
+debug_type
+debug_make_indirect_type (handle, slot, tag)
+     PTR handle;
+     debug_type *slot;
+     const char *tag;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_indirect_type *i;
+
+  t = debug_make_type (info, DEBUG_KIND_INDIRECT, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  i = (struct debug_indirect_type *) xmalloc (sizeof *i);
+  memset (i, 0, sizeof *i);
+
+  i->slot = slot;
+  i->tag = tag;
+
+  t->u.kindirect = i;
+
+  return t;
+}
+
+/* Make a void type.  There is only one of these.  */
+
+debug_type
+debug_make_void_type (handle)
+     PTR handle;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+
+  return debug_make_type (info, DEBUG_KIND_VOID, 0);
+}
+
+/* Make an integer type of a given size.  The boolean argument is true
+   if the integer is unsigned.  */
+
+debug_type
+debug_make_int_type (handle, size, unsignedp)
+     PTR handle;
+     unsigned int size;
+     boolean unsignedp;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+
+  t = debug_make_type (info, DEBUG_KIND_INT, size);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t->u.kint = unsignedp;
+
+  return t;
+}
+
+/* Make a floating point type of a given size.  FIXME: On some
+   platforms, like an Alpha, you probably need to be able to specify
+   the format.  */
+
+debug_type
+debug_make_float_type (handle, size)
+     PTR handle;
+     unsigned int size;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+
+  return debug_make_type (info, DEBUG_KIND_FLOAT, size);
+}
+
+/* Make a boolean type of a given size.  */
+
+debug_type
+debug_make_bool_type (handle, size)
+     PTR handle;
+     unsigned int size;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+
+  return debug_make_type (info, DEBUG_KIND_BOOL, size);
+}
+
+/* Make a complex type of a given size.  */
+
+debug_type
+debug_make_complex_type (handle, size)
+     PTR handle;
+     unsigned int size;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+
+  return debug_make_type (info, DEBUG_KIND_COMPLEX, size);
+}
+
+/* Make a structure type.  The second argument is true for a struct,
+   false for a union.  The third argument is the size of the struct.
+   The fourth argument is a NULL terminated array of fields.  */
+
+debug_type
+debug_make_struct_type (handle, structp, size, fields)
+     PTR handle;
+     boolean structp;
+     bfd_vma size;
+     debug_field *fields;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_class_type *c;
+
+  t = debug_make_type (info,
+		       structp ? DEBUG_KIND_STRUCT : DEBUG_KIND_UNION,
+		       size);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  c = (struct debug_class_type *) xmalloc (sizeof *c);
+  memset (c, 0, sizeof *c);
+
+  c->fields = fields;
+
+  t->u.kclass = c;
+
+  return t;
+}
+
+/* Make an object type.  The first three arguments after the handle
+   are the same as for debug_make_struct_type.  The next arguments are
+   a NULL terminated array of base classes, a NULL terminated array of
+   methods, the type of the object holding the virtual function table
+   if it is not this object, and a boolean which is true if this
+   object has its own virtual function table.  */
+
+debug_type
+debug_make_object_type (handle, structp, size, fields, baseclasses,
+			methods, vptrbase, ownvptr)
+     PTR handle;
+     boolean structp;
+     bfd_vma size;
+     debug_field *fields;
+     debug_baseclass *baseclasses;
+     debug_method *methods;
+     debug_type vptrbase;
+     boolean ownvptr;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_class_type *c;
+
+  t = debug_make_type (info,
+		       structp ? DEBUG_KIND_CLASS : DEBUG_KIND_UNION_CLASS,
+		       size);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  c = (struct debug_class_type *) xmalloc (sizeof *c);
+  memset (c, 0, sizeof *c);
+
+  c->fields = fields;
+  c->baseclasses = baseclasses;
+  c->methods = methods;
+  if (ownvptr)
+    c->vptrbase = t;
+  else
+    c->vptrbase = vptrbase;
+
+  t->u.kclass = c;
+
+  return t;
+}
+
+/* Make an enumeration type.  The arguments are a null terminated
+   array of strings, and an array of corresponding values.  */
+
+debug_type
+debug_make_enum_type (handle, names, values)
+     PTR handle;
+     const char **names;
+     bfd_signed_vma *values;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_enum_type *e;
+
+  t = debug_make_type (info, DEBUG_KIND_ENUM, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  e = (struct debug_enum_type *) xmalloc (sizeof *e);
+  memset (e, 0, sizeof *e);
+
+  e->names = names;
+  e->values = values;
+
+  t->u.kenum = e;
+
+  return t;
+}
+
+/* Make a pointer to a given type.  */
+
+debug_type
+debug_make_pointer_type (handle, type)
+     PTR handle;
+     debug_type type;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+
+  if (type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  if (type->pointer != DEBUG_TYPE_NULL)
+    return type->pointer;
+
+  t = debug_make_type (info, DEBUG_KIND_POINTER, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t->u.kpointer = type;
+
+  type->pointer = t;
+
+  return t;
+}
+
+/* Make a function returning a given type.  FIXME: We should be able
+   to record the parameter types.  */
+
+debug_type
+debug_make_function_type (handle, type)
+     PTR handle;
+     debug_type type;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_function_type *f;
+
+  if (type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, DEBUG_KIND_FUNCTION, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  f = (struct debug_function_type *) xmalloc (sizeof *f);
+  memset (f, 0, sizeof *f);
+
+  f->return_type = type;
+
+  t->u.kfunction = f;
+
+  return t;
+}
+
+/* Make a reference to a given type.  */
+
+debug_type
+debug_make_reference_type (handle, type)
+     PTR handle;
+     debug_type type;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+
+  if (type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, DEBUG_KIND_REFERENCE, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t->u.kreference = type;
+
+  return t;
+}
+
+/* Make a range of a given type from a lower to an upper bound.  */
+
+debug_type
+debug_make_range_type (handle, type, lower, upper)
+     PTR handle;
+     debug_type type;
+     bfd_signed_vma lower;
+     bfd_signed_vma upper;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_range_type *r;
+
+  if (type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, DEBUG_KIND_RANGE, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  r = (struct debug_range_type *) xmalloc (sizeof *r);
+  memset (r, 0, sizeof *r);
+
+  r->type = type;
+  r->lower = lower;
+  r->upper = upper;
+
+  t->u.krange = r;
+
+  return t;
+}
+
+/* Make an array type.  The second argument is the type of an element
+   of the array.  The third argument is the type of a range of the
+   array.  The fourth and fifth argument are the lower and upper
+   bounds, respectively.  The sixth argument is true if this array is
+   actually a string, as in C.  */
+
+debug_type
+debug_make_array_type (handle, element_type, range_type, lower, upper,
+		       stringp)
+     PTR handle;
+     debug_type element_type;
+     debug_type range_type;
+     bfd_signed_vma lower;
+     bfd_signed_vma upper;
+     boolean stringp;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_array_type *a;
+
+  if (element_type == NULL || range_type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, DEBUG_KIND_ARRAY, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  a = (struct debug_array_type *) xmalloc (sizeof *a);
+  memset (a, 0, sizeof *a);
+
+  a->element_type = element_type;
+  a->range_type = range_type;
+  a->lower = lower;
+  a->upper = upper;
+  a->stringp = stringp;
+
+  t->u.karray = a;
+
+  return t;
+}
+
+/* Make a set of a given type.  For example, a Pascal set type.  The
+   boolean argument is true if this set is actually a bitstring, as in
+   CHILL.  */
+
+debug_type
+debug_make_set_type (handle, type, bitstringp)
+     PTR handle;
+     debug_type type;
+     boolean bitstringp;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_set_type *s;
+
+  if (type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, DEBUG_KIND_SET, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  s = (struct debug_set_type *) xmalloc (sizeof *s);
+  memset (s, 0, sizeof *s);
+
+  s->type = type;
+  s->bitstringp = bitstringp;
+
+  t->u.kset = s;
+
+  return t;
+}
+
+/* Make a type for a pointer which is relative to an object.  The
+   second argument is the type of the object to which the pointer is
+   relative.  The third argument is the type that the pointer points
+   to.  */
+
+debug_type
+debug_make_offset_type (handle, base_type, target_type)
+     PTR handle;
+     debug_type base_type;
+     debug_type target_type;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_offset_type *o;
+
+  if (base_type == NULL || target_type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, DEBUG_KIND_OFFSET, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  o = (struct debug_offset_type *) xmalloc (sizeof *o);
+  memset (o, 0, sizeof *o);
+
+  o->base_type = base_type;
+  o->target_type = target_type;
+
+  t->u.koffset = o;
+
+  return t;
+}
+
+/* Make a type for a method function.  The second argument is the
+   return type, the third argument is the domain, and the fourth
+   argument is a NULL terminated array of argument types.  */
+
+debug_type
+debug_make_method_type (handle, return_type, domain_type, arg_types)
+     PTR handle;
+     debug_type return_type;
+     debug_type domain_type;
+     debug_type *arg_types;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_method_type *m;
+
+  if (return_type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, DEBUG_KIND_METHOD, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  m = (struct debug_method_type *) xmalloc (sizeof *m);
+  memset (m, 0, sizeof *m);
+
+  m->return_type = return_type;
+  m->domain_type = domain_type;
+  m->arg_types = arg_types;
+
+  t->u.kmethod = m;
+
+  return t;
+}
+
+/* Make a const qualified version of a given type.  */
+
+debug_type
+debug_make_const_type (handle, type)
+     PTR handle;
+     debug_type type;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+
+  if (type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, DEBUG_KIND_CONST, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t->u.kconst = type;
+
+  return t;
+}
+
+/* Make a volatile qualified version of a given type.  */
+
+debug_type
+debug_make_volatile_type (handle, type)
+     PTR handle;
+     debug_type type;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+
+  if (type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, DEBUG_KIND_VOLATILE, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t->u.kvolatile = type;
+
+  return t;
+}
+
+/* Make an undefined tagged type.  For example, a struct which has
+   been mentioned, but not defined.  */
+
+debug_type
+debug_make_undefined_tagged_type (handle, name, kind)
+     PTR handle;
+     const char *name;
+     enum debug_type_kind kind;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+
+  if (name == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, kind, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  return debug_tag_type (handle, name, t);
+}
+
+/* Make a base class for an object.  The second argument is the base
+   class type.  The third argument is the bit position of this base
+   class in the object (always 0 unless doing multiple inheritance).
+   The fourth argument is whether this is a virtual class.  The fifth
+   argument is the visibility of the base class.  */
+
+/*ARGSUSED*/
+debug_baseclass
+debug_make_baseclass (handle, type, bitpos, virtual, visibility)
+     PTR handle;
+     debug_type type;
+     bfd_vma bitpos;
+     boolean virtual;
+     enum debug_visibility visibility;
+{     
+  struct debug_baseclass *b;
+
+  b = (struct debug_baseclass *) xmalloc (sizeof *b);
+  memset (b, 0, sizeof *b);
+
+  b->type = type;
+  b->bitpos = bitpos;
+  b->virtual = virtual;
+  b->visibility = visibility;
+
+  return b;
+}
+
+/* Make a field for a struct.  The second argument is the name.  The
+   third argument is the type of the field.  The fourth argument is
+   the bit position of the field.  The fifth argument is the size of
+   the field (it may be zero).  The sixth argument is the visibility
+   of the field.  */
+
+/*ARGSUSED*/
+debug_field
+debug_make_field (handle, name, type, bitpos, bitsize, visibility)
+     PTR handle;
+     const char *name;
+     debug_type type;
+     bfd_vma bitpos;
+     bfd_vma bitsize;
+     enum debug_visibility visibility;
+{
+  struct debug_field *f;
+
+  f = (struct debug_field *) xmalloc (sizeof *f);
+  memset (f, 0, sizeof *f);
+
+  f->name = name;
+  f->type = type;
+  f->static_member = false;
+  f->u.f.bitpos = bitpos;
+  f->u.f.bitsize = bitsize;
+  f->visibility = visibility;
+
+  return f;
+}
+
+/* Make a static member of an object.  The second argument is the
+   name.  The third argument is the type of the member.  The fourth
+   argument is the physical name of the member (i.e., the name as a
+   global variable).  The fifth argument is the visibility of the
+   member.  */
+
+/*ARGSUSED*/
+debug_field
+debug_make_static_member (handle, name, type, physname, visibility)
+     PTR handle;
+     const char *name;
+     debug_type type;
+     const char *physname;
+     enum debug_visibility visibility;
+{
+  struct debug_field *f;
+
+  f = (struct debug_field *) xmalloc (sizeof *f);
+  memset (f, 0, sizeof *f);
+
+  f->name = name;
+  f->type = type;
+  f->static_member = true;
+  f->u.s.physname = physname;
+  f->visibility = visibility;
+
+  return f;
+}
+
+/* Make a method.  The second argument is the name, and the third
+   argument is a NULL terminated array of method variants.  */
+
+/*ARGSUSED*/
+debug_method
+debug_make_method (handle, name, variants)
+     PTR handle;
+     const char *name;
+     debug_method_variant *variants;
+{
+  struct debug_method *m;
+
+  m = (struct debug_method *) xmalloc (sizeof *m);
+  memset (m, 0, sizeof *m);
+
+  m->name = name;
+  m->variants = variants;
+
+  return m;
+}
+
+/* Make a method argument.  The second argument is the real name of
+   the function.  The third argument is the type of the function.  The
+   fourth argument is the visibility.  The fifth argument is whether
+   this is a const function.  The sixth argument is whether this is a
+   volatile function.  The seventh argument is the offset in the
+   virtual function table, if any.  The eighth argument is the virtual
+   function context.  FIXME: Are the const and volatile arguments
+   necessary?  Could we just use debug_make_const_type?  */
+
+/*ARGSUSED*/
+debug_method_variant
+debug_make_method_variant (handle, argtypes, type, visibility, constp,
+			   volatilep, voffset, context)
+     PTR handle;
+     const char *argtypes;
+     debug_type type;
+     enum debug_visibility visibility;
+     boolean constp;
+     boolean volatilep;
+     bfd_vma voffset;
+     debug_type context;
+{
+  struct debug_method_variant *m;
+
+  m = (struct debug_method_variant *) xmalloc (sizeof *m);
+  memset (m, 0, sizeof *m);
+
+  m->argtypes = argtypes;
+  m->type = type;
+  m->visibility = visibility;
+  m->constp = constp;
+  m->volatilep = volatilep;
+  m->voffset = voffset;
+  m->context = context;
+
+  return m;
+}
+
+/* Make a static method argument.  The arguments are the same as for
+   debug_make_method_variant, except that the last two are omitted
+   since a static method can not also be virtual.  */
+
+debug_method_variant
+debug_make_static_method_variant (handle, argtypes, type, visibility,
+				  constp, volatilep)
+     PTR handle;
+     const char *argtypes;
+     debug_type type;
+     enum debug_visibility visibility;
+     boolean constp;
+     boolean volatilep;
+{
+  struct debug_method_variant *m;
+
+  m = (struct debug_method_variant *) xmalloc (sizeof *m);
+  memset (m, 0, sizeof *m);
+
+  m->argtypes = argtypes;
+  m->type = type;
+  m->visibility = visibility;
+  m->constp = constp;
+  m->volatilep = volatilep;
+  m->voffset = VOFFSET_STATIC_METHOD;
+
+  return m;
+}
+
+/* Name a type.  */
+
+debug_type
+debug_name_type (handle, name, type)
+     PTR handle;
+     const char *name;
+     debug_type type;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_named_type *n;
+  struct debug_name *nm;
+
+  if (name == NULL || type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  t = debug_make_type (info, DEBUG_KIND_NAMED, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  n = (struct debug_named_type *) xmalloc (sizeof *n);
+  memset (n, 0, sizeof *n);
+
+  n->type = type;
+
+  t->u.knamed = n;
+
+  /* We also need to add the name to the current namespace.  */
+
+  nm = debug_add_to_current_namespace (info, name, DEBUG_OBJECT_TYPE,
+				       DEBUG_LINKAGE_NONE);
+  if (nm == NULL)
+    return false;
+
+  nm->u.type = t;
+
+  n->name = nm;
+
+  return t;
+}
+
+/* Tag a type.  */
+
+debug_type
+debug_tag_type (handle, name, type)
+     PTR handle;
+     const char *name;
+     debug_type type;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_type *t;
+  struct debug_named_type *n;
+  struct debug_name *nm;
+
+  if (name == NULL || type == NULL)
+    return DEBUG_TYPE_NULL;
+
+  if (info->current_file == NULL)
+    {
+      debug_error ("debug_tag_type: no current file");
+      return DEBUG_TYPE_NULL;
+    }
+
+  if (type->kind == DEBUG_KIND_TAGGED)
+    {
+      if (strcmp (type->u.knamed->name->name, name) == 0)
+	return type;
+      debug_error ("debug_tag_type: extra tag attempted");
+      return DEBUG_TYPE_NULL;
+    }
+
+  t = debug_make_type (info, DEBUG_KIND_TAGGED, 0);
+  if (t == NULL)
+    return DEBUG_TYPE_NULL;
+
+  n = (struct debug_named_type *) xmalloc (sizeof *n);
+  memset (n, 0, sizeof *n);
+
+  n->type = type;
+
+  t->u.knamed = n;
+
+  /* We keep a global namespace of tags for each compilation unit.  I
+     don't know if that is the right thing to do.  */
+
+  nm = debug_add_to_namespace (info, &info->current_file->globals, name,
+			       DEBUG_OBJECT_TAG, DEBUG_LINKAGE_NONE);
+  if (nm == NULL)
+    return false;
+
+  nm->u.tag = t;
+
+  n->name = nm;
+
+  return t;
+}
+
+/* Record the size of a given type.  */
+
+/*ARGSUSED*/
+boolean
+debug_record_type_size (handle, type, size)
+     PTR handle;
+     debug_type type;
+     unsigned int size;
+{
+  if (type->size != 0 && type->size != size)
+    fprintf (stderr, "Warning: changing type size from %d to %d\n",
+	     type->size, size);
+
+  type->size = size;
+
+  return true;
+}
+
+/* Find a tagged type.  */
+
+debug_type
+debug_find_tagged_type (handle, name, kind)
+     PTR handle;
+     const char *name;
+     enum debug_type_kind kind;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_unit *u;
+
+  /* We search the globals of all the compilation units.  I don't know
+     if this is correct or not.  It would be easy to change.  */
+
+  for (u = info->units; u != NULL; u = u->next)
+    {
+      struct debug_file *f;
+
+      for (f = u->files; f != NULL; f = f->next)
+	{
+	  struct debug_name *n;
+
+	  if (f->globals != NULL)
+	    {
+	      for (n = f->globals->list; n != NULL; n = n->next)
+		{
+		  if (n->kind == DEBUG_OBJECT_TAG
+		      && (kind == DEBUG_KIND_VOID
+			  || n->u.tag->kind == kind)
+		      && n->name[0] == name[0]
+		      && strcmp (n->name, name) == 0)
+		    return n->u.tag;
+		}
+	    }
+	}
+    }
+
+  return DEBUG_TYPE_NULL;
+}
+
+/* Get the name of a type.  */
+
+/*ARGSUSED*/
+const char *
+debug_get_type_name (handle, type)
+     PTR handle;
+     debug_type type;
+{
+  if (type->kind == DEBUG_KIND_INDIRECT)
+    {
+      if (*type->u.kindirect->slot != NULL)
+	return debug_get_type_name (handle, *type->u.kindirect->slot);
+      return type->u.kindirect->tag;
+    }
+  if (type->kind == DEBUG_KIND_NAMED
+      || type->kind == DEBUG_KIND_TAGGED)
+    return type->u.knamed->name->name;
+  return NULL;
+}
+
+/* Write out the debugging information.  This is given a handle to
+   debugging information, and a set of function pointers to call.  */
+
+boolean
+debug_write (handle, fns, fhandle)
+     PTR handle;
+     const struct debug_write_fns *fns;
+     PTR fhandle;
+{
+  struct debug_handle *info = (struct debug_handle *) handle;
+  struct debug_unit *u;
+
+  /* We use a mark to tell whether we have already written out a
+     particular name.  We use an integer, so that we don't have to
+     clear the mark fields if we happen to write out the same
+     information more than once.  */
+  ++info->mark;
+
+  for (u = info->units; u != NULL; u = u->next)
+    {
+      struct debug_file *f;
+      boolean first_file;
+
+      if (! (*fns->start_compilation_unit) (fhandle, u->files->filename))
+	return false;
+
+      first_file = true;
+      for (f = u->files; f != NULL; f = f->next)
+	{
+	  struct debug_name *n;
+
+	  if (first_file)
+	    first_file = false;
+	  else
+	    {
+	      if (! (*fns->start_source) (fhandle, f->filename))
+		return false;
+	    }
+
+	  if (f->globals != NULL)
+	    {
+	      for (n = f->globals->list; n != NULL; n = n->next)
+		{
+		  if (! debug_write_name (info, fns, fhandle, n))
+		    return false;
+		}
+	    }
+	}
+    }
+
+  return true;
+}
+
+/* Write out an element in a namespace.  */
+
+static boolean
+debug_write_name (info, fns, fhandle, n)
+     struct debug_handle *info;
+     const struct debug_write_fns *fns;
+     PTR fhandle;
+     struct debug_name *n;
+{
+  /* The class_mark field is used to prevent recursively outputting a
+     struct or class.  */
+  ++info->class_mark;
+
+  switch (n->kind)
+    {
+    case DEBUG_OBJECT_TYPE:
+      if (! debug_write_type (info, fns, fhandle, n->u.type, n)
+	  || ! (*fns->typdef) (fhandle, n->name))
+	return false;
+      return true;
+    case DEBUG_OBJECT_TAG:
+      if (! debug_write_type (info, fns, fhandle, n->u.tag, n))
+	return false;
+      return (*fns->tag) (fhandle, n->name);
+    case DEBUG_OBJECT_VARIABLE:
+      if (! debug_write_type (info, fns, fhandle, n->u.variable->type,
+			      (struct debug_name *) NULL))
+	return false;
+      return (*fns->variable) (fhandle, n->name, n->u.variable->kind,
+			       n->u.variable->val);
+    case DEBUG_OBJECT_FUNCTION:
+      return debug_write_function (info, fns, fhandle, n->name,
+				   n->linkage, n->u.function);
+    case DEBUG_OBJECT_INT_CONSTANT:
+      return (*fns->int_constant) (fhandle, n->name, n->u.int_constant);
+    case DEBUG_OBJECT_FLOAT_CONSTANT:
+      return (*fns->float_constant) (fhandle, n->name, n->u.float_constant);
+    case DEBUG_OBJECT_TYPED_CONSTANT:
+      if (! debug_write_type (info, fns, fhandle, n->u.typed_constant->type,
+			      (struct debug_name *) NULL))
+	return false;
+      return (*fns->typed_constant) (fhandle, n->name,
+				     n->u.typed_constant->val);
+    default:
+      abort ();
+      return false;
+    }
+  /*NOTREACHED*/
+}
+
+/* Write out a type.  */
+
+static boolean
+debug_write_type (info, fns, fhandle, type, name)
+     struct debug_handle *info;
+     const struct debug_write_fns *fns;
+     PTR fhandle;
+     struct debug_type *type;
+     struct debug_name *name;
+{
+  unsigned int i;
+
+  /* If we have a name for this type, just output it.  We only output
+     typedef names after they have been defined.  We output type tags
+     whenever we are not actually defining them.  */
+  if ((type->kind == DEBUG_KIND_NAMED
+       || type->kind == DEBUG_KIND_TAGGED)
+      && (type->u.knamed->name->mark == info->mark
+	  || (type->kind == DEBUG_KIND_TAGGED
+	      && type->u.knamed->name != name)))
+    {
+      if (type->kind == DEBUG_KIND_NAMED)
+	return (*fns->typedef_type) (fhandle, type->u.knamed->name->name);
+      else
+	return (*fns->tag_type) (fhandle, type->u.knamed->name->name,
+				 type->u.knamed->type->kind);
+    }
+
+  /* Mark the name after we have already looked for a known name, so
+     that we don't just define a type in terms of itself.  We need to
+     mark the name here so that a struct containing a pointer to
+     itself will work.  */
+  if (name != NULL)
+    name->mark = info->mark;
+
+  switch (type->kind)
+    {
+    case DEBUG_KIND_INDIRECT:
+      if (*type->u.kindirect->slot == DEBUG_TYPE_NULL)
+	return (*fns->empty_type) (fhandle);
+      return debug_write_type (info, fns, fhandle, *type->u.kindirect->slot,
+			       (struct debug_name *) NULL);
+    case DEBUG_KIND_VOID:
+      return (*fns->void_type) (fhandle);
+    case DEBUG_KIND_INT:
+      return (*fns->int_type) (fhandle, type->size, type->u.kint);
+    case DEBUG_KIND_FLOAT:
+      return (*fns->float_type) (fhandle, type->size);
+    case DEBUG_KIND_COMPLEX:
+      return (*fns->complex_type) (fhandle, type->size);
+    case DEBUG_KIND_BOOL:
+      return (*fns->bool_type) (fhandle, type->size);
+    case DEBUG_KIND_STRUCT:
+    case DEBUG_KIND_UNION:
+      if (info->class_mark == type->u.kclass->mark)
+	{
+	  /* We are currently outputting this struct.  I don't know if
+             this can happen, but it can happen for a class.  */
+	  return (*fns->tag_type) (fhandle, "?defining?", type->kind);
+	}
+      type->u.kclass->mark = info->class_mark;
+
+      if (! (*fns->start_struct_type) (fhandle,
+				       type->kind == DEBUG_KIND_STRUCT,
+				       type->size))
+	return false;
+      if (type->u.kclass->fields != NULL)
+	{
+	  for (i = 0; type->u.kclass->fields[i] != NULL; i++)
+	    {
+	      struct debug_field *f;
+
+	      f = type->u.kclass->fields[i];
+	      if (! debug_write_type (info, fns, fhandle, f->type,
+				      (struct debug_name *) NULL)
+		  || ! (*fns->struct_field) (fhandle, f->name, f->u.f.bitpos,
+					     f->u.f.bitsize, f->visibility))
+		return false;
+	    }
+	}
+      return (*fns->end_struct_type) (fhandle);
+    case DEBUG_KIND_CLASS:
+    case DEBUG_KIND_UNION_CLASS:
+      return debug_write_class_type (info, fns, fhandle, type);
+    case DEBUG_KIND_ENUM:
+      return (*fns->enum_type) (fhandle, type->u.kenum->names,
+				type->u.kenum->values);
+    case DEBUG_KIND_POINTER:
+      if (! debug_write_type (info, fns, fhandle, type->u.kpointer,
+			      (struct debug_name *) NULL))
+	return false;
+      return (*fns->pointer_type) (fhandle);
+    case DEBUG_KIND_FUNCTION:
+      if (! debug_write_type (info, fns, fhandle,
+			      type->u.kfunction->return_type,
+			      (struct debug_name *) NULL))
+	return false;
+      return (*fns->function_type) (fhandle);
+    case DEBUG_KIND_REFERENCE:
+      if (! debug_write_type (info, fns, fhandle, type->u.kreference,
+			      (struct debug_name *) NULL))
+	return false;
+      return (*fns->reference_type) (fhandle);
+    case DEBUG_KIND_RANGE:
+      if (! debug_write_type (info, fns, fhandle, type->u.krange->type,
+			      (struct debug_name *) NULL))
+	return false;
+      return (*fns->range_type) (fhandle, type->u.krange->lower,
+				 type->u.krange->upper);
+    case DEBUG_KIND_ARRAY:
+      if (! debug_write_type (info, fns, fhandle, type->u.karray->element_type,
+			      (struct debug_name *) NULL)
+	  || ! debug_write_type (info, fns, fhandle,
+				 type->u.karray->range_type,
+				 (struct debug_name *) NULL))
+	return false;
+      return (*fns->array_type) (fhandle, type->u.karray->lower,
+				 type->u.karray->upper,
+				 type->u.karray->stringp);
+    case DEBUG_KIND_SET:
+      if (! debug_write_type (info, fns, fhandle, type->u.kset->type,
+			      (struct debug_name *) NULL))
+	return false;
+      return (*fns->set_type) (fhandle, type->u.kset->bitstringp);
+    case DEBUG_KIND_OFFSET:
+      if (! debug_write_type (info, fns, fhandle, type->u.koffset->base_type,
+			      (struct debug_name *) NULL)
+	  || ! debug_write_type (info, fns, fhandle,
+				 type->u.koffset->target_type,
+				 (struct debug_name *) NULL))
+	return false;
+      return (*fns->offset_type) (fhandle);
+    case DEBUG_KIND_METHOD:
+      if (! debug_write_type (info, fns, fhandle,
+			      type->u.kmethod->return_type,
+			      (struct debug_name *) NULL))
+	return false;
+      if (type->u.kmethod->arg_types == NULL)
+	i = -1;
+      else
+	{
+	  for (i = 0; type->u.kmethod->arg_types[i] != NULL; i++)
+	    {
+	      if (! debug_write_type (info, fns, fhandle,
+				      type->u.kmethod->arg_types[i],
+				      (struct debug_name *) NULL))
+		return false;
+	    }
+	}
+      if (type->u.kmethod->domain_type != NULL)
+	{
+	  if (! debug_write_type (info, fns, fhandle,
+				  type->u.kmethod->domain_type,
+				  (struct debug_name *) NULL))
+	    return false;
+	}
+      return (*fns->method_type) (fhandle,
+				  type->u.kmethod->domain_type != NULL,
+				  i);
+    case DEBUG_KIND_CONST:
+      if (! debug_write_type (info, fns, fhandle, type->u.kconst,
+			      (struct debug_name *) NULL))
+	return false;
+      return (*fns->const_type) (fhandle);
+    case DEBUG_KIND_VOLATILE:
+      if (! debug_write_type (info, fns, fhandle, type->u.kvolatile,
+			      (struct debug_name *) NULL))
+	return false;
+      return (*fns->volatile_type) (fhandle);
+    case DEBUG_KIND_NAMED:
+    case DEBUG_KIND_TAGGED:
+      return debug_write_type (info, fns, fhandle, type->u.knamed->type,
+			       (struct debug_name *) NULL);
+    default:
+      abort ();
+      return false;
+    }
+}
+
+/* Write out a class type.  */
+
+static boolean
+debug_write_class_type (info, fns, fhandle, type)
+     struct debug_handle *info;
+     const struct debug_write_fns *fns;
+     PTR fhandle;
+     struct debug_type *type;
+{
+  unsigned int i;
+
+  if (info->class_mark == type->u.kclass->mark)
+    {
+      /* We are currently outputting this class.  This can happen when
+         there are methods for an anonymous class.  */
+      return (*fns->tag_type) (fhandle, "?defining?", type->kind);
+    }
+  type->u.kclass->mark = info->class_mark;
+
+  if (type->u.kclass->vptrbase != NULL
+      && type->u.kclass->vptrbase != type)
+    {
+      if (! debug_write_type (info, fns, fhandle, type->u.kclass->vptrbase,
+			      (struct debug_name *) NULL))
+	return false;
+    }
+
+  if (! (*fns->start_class_type) (fhandle,
+				  type->kind == DEBUG_KIND_CLASS,
+				  type->size,
+				  type->u.kclass->vptrbase != NULL,
+				  type->u.kclass->vptrbase == type))
+    return false;
+  if (type->u.kclass->fields != NULL)
+    {
+      for (i = 0; type->u.kclass->fields[i] != NULL; i++)
+	{
+	  struct debug_field *f;
+
+	  f = type->u.kclass->fields[i];
+	  if (! debug_write_type (info, fns, fhandle, f->type,
+				  (struct debug_name *) NULL))
+	    return false;
+	  if (f->static_member)
+	    {
+	      if (! (*fns->class_static_member) (fhandle, f->name,
+						 f->u.s.physname,
+						 f->visibility))
+		return false;
+	    }
+	  else
+	    {
+	      if (! (*fns->struct_field) (fhandle, f->name, f->u.f.bitpos,
+					  f->u.f.bitsize, f->visibility))
+		return false;
+	    }
+	}
+    }
+
+  if (type->u.kclass->baseclasses != NULL)
+    {
+      for (i = 0; type->u.kclass->baseclasses[i] != NULL; i++)
+	{
+	  struct debug_baseclass *b;
+
+	  b = type->u.kclass->baseclasses[i];
+	  if (! debug_write_type (info, fns, fhandle, b->type,
+				  (struct debug_name *) NULL))
+	    return false;
+	  if (! (*fns->class_baseclass) (fhandle, b->bitpos, b->virtual,
+					 b->visibility))
+	    return false;
+	}
+    }
+
+  if (type->u.kclass->methods != NULL)
+    {
+      for (i = 0; type->u.kclass->methods[i] != NULL; i++)
+	{
+	  struct debug_method *m;
+	  unsigned int j;
+
+	  m = type->u.kclass->methods[i];
+	  if (! (*fns->class_start_method) (fhandle, m->name))
+	    return false;
+	  for (j = 0; m->variants[j] != NULL; j++)
+	    {
+	      struct debug_method_variant *v;
+
+	      v = m->variants[j];
+	      if (v->context != NULL)
+		{
+		  if (! debug_write_type (info, fns, fhandle, v->context,
+					  (struct debug_name *) NULL))
+		    return false;
+		}
+	      if (! debug_write_type (info, fns, fhandle, v->type,
+				      (struct debug_name *) NULL))
+		return false;
+	      if (v->voffset != VOFFSET_STATIC_METHOD)
+		{
+		  if (! (*fns->class_method_variant) (fhandle, v->argtypes,
+						      v->visibility,
+						      v->constp, v->volatilep,
+						      v->voffset,
+						      v->context != NULL))
+		    return false;
+		}
+	      else
+		{
+		  if (! (*fns->class_static_method_variant) (fhandle,
+							     v->argtypes,
+							     v->visibility,
+							     v->constp,
+							     v->volatilep))
+		    return false;
+		}
+	    }
+	  if (! (*fns->class_end_method) (fhandle))
+	    return false;
+	}
+    }
+
+  return (*fns->end_class_type) (fhandle);
+}
+
+/* Write out information for a function.  */
+
+static boolean
+debug_write_function (info, fns, fhandle, name, linkage, function)
+     struct debug_handle *info;
+     const struct debug_write_fns *fns;
+     PTR fhandle;
+     const char *name;
+     enum debug_object_linkage linkage;
+     struct debug_function *function;
+{
+  struct debug_parameter *p;
+  struct debug_block *b;
+
+  if (! debug_write_type (info, fns, fhandle, function->return_type,
+			  (struct debug_name *) NULL))
+    return false;
+
+  if (! (*fns->start_function) (fhandle, name,
+				linkage == DEBUG_LINKAGE_GLOBAL))
+    return false;
+
+  for (p = function->parameters; p != NULL; p = p->next)
+    {
+      if (! debug_write_type (info, fns, fhandle, p->type,
+			      (struct debug_name *) NULL)
+	  || ! (*fns->function_parameter) (fhandle, p->name, p->kind, p->val))
+	return false;
+    }
+
+  for (b = function->blocks; b != NULL; b = b->next)
+    {
+      if (! debug_write_block (info, fns, fhandle, b))
+	return false;
+    }
+
+  return (*fns->end_function) (fhandle);
+}
+
+/* Write out information for a block.  */
+
+static boolean
+debug_write_block (info, fns, fhandle, block)
+     struct debug_handle *info;
+     const struct debug_write_fns *fns;
+     PTR fhandle;
+     struct debug_block *block;
+{
+  struct debug_name *n;
+  struct debug_lineno *l;
+  struct debug_block *b;
+
+  if (! (*fns->start_block) (fhandle, block->start))
+    return false;
+
+  if (block->locals != NULL)
+    {
+      for (n = block->locals->list; n != NULL; n = n->next)
+	{
+	  if (! debug_write_name (info, fns, fhandle, n))
+	    return false;
+	}
+    }
+
+  for (l = block->linenos; l != NULL; l = l->next)
+    {
+      unsigned int i;
+
+      for (i = 0; i < DEBUG_LINENO_COUNT; i++)
+	{
+	  if (l->linenos[i] == (unsigned long) -1)
+	    break;
+	  if (! (*fns->lineno) (fhandle, l->file->filename, l->linenos[i],
+				l->addrs[i]))
+	    return false;
+	}
+    }
+
+  for (b = block->children; b != NULL; b = b->next)
+    {
+      if (! debug_write_block (info, fns, fhandle, b))
+	return false;
+    }
+
+  return (*fns->end_block) (fhandle, block->end);
+}