import gdb-2000-02-02 snapshot

1 files changed, 1007 insertions, 0 deletions

diff --git a/gdb/ui-out.c b/gdb/ui-out.c
new file mode 100644
index 0000000..9e40011
--- /dev/null
+++ b/gdb/ui-out.c
@@ -0,0 +1,1007 @@
+/* Output generating routines for GDB.
+   Copyright 1999, 2000 Free Software Foundation, Inc.
+   Contributed by Cygnus Solutions.
+   Written by Fernando Nasser for Cygnus.
+
+   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.  */
+
+#include "defs.h"
+#include "gdb_string.h"
+#include "expression.h"		/* For language.h */
+#include "language.h"
+#include "ui-out.h"
+
+/* Convenience macro for allocting typesafe memory. */
+
+#undef XMALLOC
+#define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE))
+
+/* table header structures */
+
+struct ui_out_hdr
+  {
+    int colno;
+    int width;
+    int alignment;
+    char *colhdr;
+    struct ui_out_hdr *next;
+  };
+
+/* The ui_out structure */
+/* Any change here requires a corresponding one in the initialization
+   of the default uiout, which is statically initialized */
+
+struct ui_out
+  {
+    int flags;
+    /* specific implementation of ui-out */
+    struct ui_out_impl *impl;
+    struct ui_out_data *data;
+
+    /* if on, a table is being generated */
+    int table_flag;
+
+    /* if on, the body of a table is being generated */
+    int body_flag;
+
+    /* number of table columns (as specified in the table_begin call) */
+    int table_columns;
+
+    /* strinf identifying the table (as specified in the table_begin call) */
+    char *table_id;
+
+    /* if on, a list is being generated.  The value is the level of nesting */
+    int list_flag;
+
+    /* we count each field; the first element is for non-list fields */
+    int field_count[5];
+
+    /* points to the first header (if any) */
+    struct ui_out_hdr *headerfirst;
+
+    /* points to the last header (if any) */
+    struct ui_out_hdr *headerlast;
+
+    /* points to header of next column to format */
+    struct ui_out_hdr *headercurr;
+
+  };
+
+/* These are the default implementation functions */
+
+static void default_table_begin (struct ui_out *uiout, int nbrofcols,
+				 char *tblid);
+static void default_table_body (struct ui_out *uiout);
+static void default_table_end (struct ui_out *uiout);
+static void default_table_header (struct ui_out *uiout, int width,
+				  enum ui_align alig, char *colhdr);
+static void default_list_begin (struct ui_out *uiout, int list_flag,
+				char *lstid);
+static void default_list_end (struct ui_out *uiout, int list_flag);
+static void default_field_int (struct ui_out *uiout, int fldno, int width,
+			       enum ui_align alig, char *fldname, int value);
+static void default_field_skip (struct ui_out *uiout, int fldno, int width,
+				enum ui_align alig, char *fldname);
+static void default_field_string (struct ui_out *uiout, int fldno, int width,
+				  enum ui_align align, char *fldname,
+				  const char *string);
+static void default_field_fmt (struct ui_out *uiout, int fldno,
+			       int width, enum ui_align align,
+			       char *fldname, char *format, va_list args);
+static void default_spaces (struct ui_out *uiout, int numspaces);
+static void default_text (struct ui_out *uiout, char *string);
+static void default_message (struct ui_out *uiout, int verbosity, char *format,
+			     va_list args);
+static void default_wrap_hint (struct ui_out *uiout, char *identstring);
+static void default_flush (struct ui_out *uiout);
+
+/* This is the default ui-out implementation functions vector */
+
+struct ui_out_impl default_ui_out_impl =
+{
+  default_table_begin,
+  default_table_body,
+  default_table_end,
+  default_table_header,
+  default_list_begin,
+  default_list_end,
+  default_field_int,
+  default_field_skip,
+  default_field_string,
+  default_field_fmt,
+  default_spaces,
+  default_text,
+  default_message,
+  default_wrap_hint,
+  default_flush
+};
+
+/* The default ui_out */
+
+struct ui_out def_uiout =
+{
+  0,				/* flags */
+  &default_ui_out_impl,		/* impl */
+};
+
+/* Pointer to current ui_out */
+/* FIXME: This should not be a global, but something passed down from main.c
+   or top.c */
+
+struct ui_out *uiout = &def_uiout;
+
+/* These are the interfaces to implementation functions */
+
+static void uo_table_begin (struct ui_out *uiout, int nbrofcols, char *tblid);
+static void uo_table_body (struct ui_out *uiout);
+static void uo_table_end (struct ui_out *uiout);
+static void uo_table_header (struct ui_out *uiout, int width,
+			     enum ui_align align, char *colhdr);
+static void uo_list_begin (struct ui_out *uiout, int list_flag, char *lstid);
+static void uo_list_end (struct ui_out *uiout, int list_flag);
+static void uo_field_int (struct ui_out *uiout, int fldno, int width,
+			  enum ui_align align, char *fldname, int value);
+static void uo_field_skip (struct ui_out *uiout, int fldno, int width,
+			   enum ui_align align, char *fldname);
+static void uo_field_string (struct ui_out *uiout, int fldno, int width,
+			  enum ui_align align, char *fldname, const char *string);
+static void uo_field_fmt (struct ui_out *uiout, int fldno, int width,
+			  enum ui_align align, char *fldname,
+			  char *format, va_list args);
+static void uo_spaces (struct ui_out *uiout, int numspaces);
+static void uo_text (struct ui_out *uiout, char *string);
+static void uo_message (struct ui_out *uiout, int verbosity,
+			char *format, va_list args);
+static void uo_wrap_hint (struct ui_out *uiout, char *identstring);
+static void uo_flush (struct ui_out *uiout);
+
+/* Prototypes for local functions */
+
+extern void _initialize_ui_out (void);
+static void append_header_to_list (struct ui_out *uiout, int width, int alignment, char *colhdr);
+static int get_curr_header (struct ui_out *uiout, int *colno, int *width,
+			    int *alignment, char **colhdr);
+static void clear_header_list (struct ui_out *uiout);
+static void verify_field_proper_position (struct ui_out *uiout);
+static void verify_field_alignment (struct ui_out *uiout, int fldno, int *width, int *alignment);
+
+static void init_ui_out_state (struct ui_out *uiout);
+
+/* exported functions (ui_out API) */
+
+/* Mark beginning of a table */
+
+void
+ui_out_table_begin (uiout, nbrofcols, tblid)
+     struct ui_out *uiout;
+     int nbrofcols;
+     char *tblid;
+{
+  if (uiout->table_flag)
+    internal_error ("gdb/ui_out.c: tables cannot be nested; table_begin found before \
+previous table_end.");
+
+  uiout->table_flag = 1;
+  uiout->table_columns = nbrofcols;
+  if (tblid != NULL)
+    uiout->table_id = xstrdup (tblid);
+  else
+    uiout->table_id = NULL;
+  clear_header_list (uiout);
+
+  uo_table_begin (uiout, nbrofcols, uiout->table_id);
+}
+
+void
+ui_out_table_body (uiout)
+     struct ui_out *uiout;
+{
+  if (!uiout->table_flag)
+    internal_error ("gdb/ui_out.c: table_body outside a table is not valid; it must be \
+after a table_begin and before a table_end.");
+  if (uiout->body_flag)
+    internal_error ("gdb/ui_out.c: extra table_body call not allowed; there must be \
+only one table_body after a table_begin and before a table_end.");
+  if (uiout->headercurr->colno != uiout->table_columns)
+    internal_error ("gdb/ui_out.c: number of headers differ from number of table \
+columns.");
+
+  uiout->body_flag = 1;
+  uiout->headercurr = uiout->headerfirst;
+
+  uo_table_body (uiout);
+}
+
+void
+ui_out_table_end (uiout)
+     struct ui_out *uiout;
+{
+  if (!uiout->table_flag)
+    internal_error ("gdb/ui_out.c: misplaced table_end or missing table_begin.");
+
+  uiout->body_flag = 0;
+  uiout->table_flag = 0;
+
+  uo_table_end (uiout);
+
+  if (uiout->table_id)
+    free (uiout->table_id);
+  clear_header_list (uiout);
+}
+
+void
+ui_out_table_header (uiout, width, alignment, colhdr)
+     struct ui_out *uiout;
+     int width;
+     enum ui_align alignment;
+     char *colhdr;
+{
+  if (!uiout->table_flag || uiout->body_flag)
+    internal_error ("ui_out: table header must be specified after table_begin \
+and before table_body.");
+
+  append_header_to_list (uiout, width, alignment, colhdr);
+
+  uo_table_header (uiout, width, alignment, colhdr);
+}
+
+void
+ui_out_list_begin (uiout, lstid)
+     struct ui_out *uiout;
+     char *lstid;
+{
+  if (uiout->table_flag && !uiout->body_flag)
+    internal_error ("ui_out: table header or table_body expected; lists must be \
+specified after table_body.");
+  if (uiout->list_flag >= 4)
+    internal_error ("ui_out: list depth exceeded; only 4 levels of lists can be \
+nested.");
+
+  uiout->list_flag++;
+  uiout->field_count[uiout->list_flag] = 0;
+  if (uiout->table_flag && (uiout->list_flag == 1))
+    uiout->headercurr = uiout->headerfirst;
+
+  uo_list_begin (uiout, uiout->list_flag, lstid);
+}
+
+void
+ui_out_list_end (uiout)
+     struct ui_out *uiout;
+{
+  if (!uiout->list_flag)
+    internal_error ("ui_out: misplaced list_end; there is no list to be closed.");
+
+  uo_list_end (uiout, uiout->list_flag);
+
+  uiout->list_flag--;
+}
+
+void
+ui_out_field_int (uiout, fldname, value)
+     struct ui_out *uiout;
+     char *fldname;
+     int value;
+{
+  int fldno;
+  int width;
+  int align;
+
+  verify_field_proper_position (uiout);
+
+  uiout->field_count[uiout->list_flag] += 1;
+  fldno = uiout->field_count[uiout->list_flag];
+
+  verify_field_alignment (uiout, fldno, &width, &align);
+
+  uo_field_int (uiout, fldno, width, align, fldname, value);
+}
+
+void
+ui_out_field_core_addr (uiout, fldname, address)
+     struct ui_out *uiout;
+     char *fldname;
+     CORE_ADDR address;
+{
+  char addstr[20];
+
+  /* FIXME-32x64: need a print_address_numeric with field width */
+  /* print_address_numeric (address, 1, local_stream); */
+  strcpy (addstr, local_hex_string_custom ((unsigned long) address, "08l"));
+
+  ui_out_field_string (uiout, fldname, addstr);
+}
+
+void
+ui_out_field_stream (uiout, fldname, buf)
+     struct ui_out *uiout;
+     char *fldname;
+     struct ui_stream *buf;
+{
+  long length;
+  char *buffer = ui_file_xstrdup (buf->stream, &length);
+  struct cleanup *old_cleanup = make_cleanup (free, buffer);
+  if (length > 0)
+    ui_out_field_string (uiout, fldname, buffer);
+  else
+    ui_out_field_skip (uiout, fldname);
+  ui_file_rewind (buf->stream);
+  do_cleanups (old_cleanup);
+}
+
+/* used to ommit a field */
+
+void
+ui_out_field_skip (uiout, fldname)
+     struct ui_out *uiout;
+     char *fldname;
+{
+  int fldno;
+  int width;
+  int align;
+
+  verify_field_proper_position (uiout);
+
+  uiout->field_count[uiout->list_flag] += 1;
+  fldno = uiout->field_count[uiout->list_flag];
+
+  verify_field_alignment (uiout, fldno, &width, &align);
+
+  uo_field_skip (uiout, fldno, width, align, fldname);
+}
+
+void
+ui_out_field_string (struct ui_out *uiout,
+		     char *fldname,
+		     const char *string)
+{
+  int fldno;
+  int width;
+  int align;
+
+  verify_field_proper_position (uiout);
+
+  uiout->field_count[uiout->list_flag] += 1;
+  fldno = uiout->field_count[uiout->list_flag];
+
+  verify_field_alignment (uiout, fldno, &width, &align);
+
+  uo_field_string (uiout, fldno, width, align, fldname, string);
+}
+
+/* VARARGS */
+void
+ui_out_field_fmt (struct ui_out *uiout, char *fldname, char *format,...)
+{
+  va_list args;
+  int fldno;
+  int width;
+  int align;
+
+  verify_field_proper_position (uiout);
+
+  uiout->field_count[uiout->list_flag] += 1;
+  fldno = uiout->field_count[uiout->list_flag];
+
+  /* will not align, but has to call anyway */
+  verify_field_alignment (uiout, fldno, &width, &align);
+
+  va_start (args, format);
+
+  uo_field_fmt (uiout, fldno, width, align, fldname, format, args);
+
+  va_end (args);
+}
+
+void
+ui_out_spaces (uiout, numspaces)
+     struct ui_out *uiout;
+     int numspaces;
+{
+  uo_spaces (uiout, numspaces);
+}
+
+void
+ui_out_text (uiout, string)
+     struct ui_out *uiout;
+     char *string;
+{
+  uo_text (uiout, string);
+}
+
+void
+ui_out_message (struct ui_out *uiout, int verbosity, char *format,...)
+{
+  va_list args;
+
+  va_start (args, format);
+
+  uo_message (uiout, verbosity, format, args);
+
+  va_end (args);
+}
+
+struct ui_stream *
+ui_out_stream_new (uiout)
+     struct ui_out *uiout;
+{
+  struct ui_stream *tempbuf;
+
+  tempbuf = XMALLOC (struct ui_stream);
+  tempbuf->uiout = uiout;
+  tempbuf->stream = mem_fileopen ();
+  return tempbuf;
+}
+
+void
+ui_out_stream_delete (buf)
+     struct ui_stream *buf;
+{
+  ui_file_delete (buf->stream);
+  free (buf);
+}
+
+static void
+do_stream_delete (void *buf)
+{
+  ui_out_stream_delete (buf);
+}
+
+struct cleanup *
+make_cleanup_ui_out_stream_delete (struct ui_stream *buf)
+{
+  return make_cleanup (do_stream_delete, buf);
+}
+
+
+void
+ui_out_wrap_hint (uiout, identstring)
+     struct ui_out *uiout;
+     char *identstring;
+{
+  uo_wrap_hint (uiout, identstring);
+}
+
+void
+ui_out_flush (uiout)
+     struct ui_out *uiout;
+{
+  uo_flush (uiout);
+}
+
+/* set the flags specified by the mask given */
+int
+ui_out_set_flags (uiout, mask)
+     struct ui_out *uiout;
+     int mask;
+{
+  int oldflags;
+
+  uiout->flags != mask;
+
+  return oldflags;
+}
+
+/* clear the flags specified by the mask given */
+int
+ui_out_clear_flags (uiout, mask)
+     struct ui_out *uiout;
+     int mask;
+{
+  int oldflags;
+
+  uiout->flags &= ~mask;
+
+  return oldflags;
+}
+
+/* test the flags against the mask given */
+int
+ui_out_test_flags (uiout, mask)
+     struct ui_out *uiout;
+     int mask;
+{
+  return (uiout->flags & mask);
+}
+
+/* obtain the current verbosity level (as stablished by the
+   'set verbositylevel' command */
+
+int
+ui_out_get_verblvl (uiout)
+     struct ui_out *uiout;
+{
+  /* FIXME: not implemented yet */
+  return 0;
+}
+
+#if 0
+void
+ui_out_result_begin (uiout, class)
+     struct ui_out *uiout;
+     char *class;
+{
+}
+
+void
+ui_out_result_end (uiout)
+     struct ui_out *uiout;
+{
+}
+
+void
+ui_out_info_begin (uiout, class)
+     struct ui_out *uiout;
+     char *class;
+{
+}
+
+void
+ui_out_info_end (uiout)
+     struct ui_out *uiout;
+{
+}
+
+void
+ui_out_notify_begin (uiout, class)
+     struct ui_out *uiout;
+     char *class;
+{
+}
+
+void
+ui_out_notify_end (uiout)
+     struct ui_out *uiout;
+{
+}
+
+void
+ui_out_error_begin (uiout, class)
+     struct ui_out *uiout;
+     char *class;
+{
+}
+
+void
+ui_out_error_end (uiout)
+     struct ui_out *uiout;
+{
+}
+#endif
+
+#if 0
+void
+gdb_error (ui_out * uiout, int severity, char *format,...)
+{
+  va_list args;
+}
+
+void
+gdb_query (uiout, qflags, qprompt)
+     struct ui_out *uiout;
+     int flags;
+     char *qprompt;
+{
+}
+#endif
+
+/* default gdb-out hook functions */
+
+static void
+default_table_begin (uiout, nbrofcols, tblid)
+     struct ui_out *uiout;
+     int nbrofcols;
+     char *tblid;
+{
+}
+
+static void
+default_table_body (uiout)
+     struct ui_out *uiout;
+{
+}
+
+static void
+default_table_end (uiout)
+     struct ui_out *uiout;
+{
+}
+
+static void
+default_table_header (uiout, width, alignment, colhdr)
+     struct ui_out *uiout;
+     int width;
+     enum ui_align alignment;
+     char *colhdr;
+{
+}
+
+static void
+default_list_begin (uiout, list_flag, lstid)
+     struct ui_out *uiout;
+     int list_flag;
+     char *lstid;
+{
+}
+
+static void
+default_list_end (uiout, list_flag)
+     struct ui_out *uiout;
+     int list_flag;
+{
+}
+
+static void
+default_field_int (uiout, fldno, width, align, fldname, value)
+     struct ui_out *uiout;
+     int fldno;
+     int width;
+     enum ui_align align;
+     char *fldname;
+     int value;
+{
+}
+
+static void
+default_field_skip (uiout, fldno, width, align, fldname)
+     struct ui_out *uiout;
+     int fldno;
+     int width;
+     enum ui_align align;
+     char *fldname;
+{
+}
+
+static void
+default_field_string (struct ui_out *uiout,
+		      int fldno,
+		      int width,
+		      enum ui_align align,
+		      char *fldname,
+		      const char *string)
+{
+}
+
+static void
+default_field_fmt (uiout, fldno, width, align, fldname, format, args)
+     struct ui_out *uiout;
+     int fldno;
+     int width;
+     enum ui_align align;
+     char *fldname;
+     char *format;
+     va_list args;
+{
+}
+
+static void
+default_spaces (uiout, numspaces)
+     struct ui_out *uiout;
+     int numspaces;
+{
+}
+
+static void
+default_text (uiout, string)
+     struct ui_out *uiout;
+     char *string;
+{
+}
+
+static void
+default_message (uiout, verbosity, format, args)
+     struct ui_out *uiout;
+     int verbosity;
+     char *format;
+     va_list args;
+{
+}
+
+static void
+default_wrap_hint (uiout, identstring)
+     struct ui_out *uiout;
+     char *identstring;
+{
+}
+
+static void
+default_flush (uiout)
+     struct ui_out *uiout;
+{
+}
+
+/* Interface to the implementation functions */
+
+void
+uo_table_begin (struct ui_out *uiout, int nbrofcols, char *tblid)
+{
+  if (!uiout->impl->table_begin)
+    return;
+  uiout->impl->table_begin (uiout, nbrofcols, tblid);
+}
+
+void
+uo_table_body (struct ui_out *uiout)
+{
+  if (!uiout->impl->table_body)
+    return;
+  uiout->impl->table_body (uiout);
+}
+
+void
+uo_table_end (struct ui_out *uiout)
+{
+  if (!uiout->impl->table_end)
+    return;
+  uiout->impl->table_end (uiout);
+}
+
+void
+uo_table_header (struct ui_out *uiout, int width, enum ui_align align, char *colhdr)
+{
+  if (!uiout->impl->table_header)
+    return;
+  uiout->impl->table_header (uiout, width, align, colhdr);
+}
+
+void
+uo_list_begin (struct ui_out *uiout, int list_flag, char *lstid)
+{
+  if (!uiout->impl->list_begin)
+    return;
+  uiout->impl->list_begin (uiout, list_flag, lstid);
+}
+
+void
+uo_list_end (struct ui_out *uiout, int list_flag)
+{
+  if (!uiout->impl->list_end)
+    return;
+  uiout->impl->list_end (uiout, list_flag);
+}
+
+void
+uo_field_int (struct ui_out *uiout, int fldno, int width, enum ui_align align, char *fldname, int value)
+{
+  if (!uiout->impl->field_int)
+    return;
+  uiout->impl->field_int (uiout, fldno, width, align, fldname, value);
+}
+
+void
+uo_field_skip (struct ui_out *uiout, int fldno, int width, enum ui_align align, char *fldname)
+{
+  if (!uiout->impl->field_skip)
+    return;
+  uiout->impl->field_skip (uiout, fldno, width, align, fldname);
+}
+
+void
+uo_field_string (struct ui_out *uiout, int fldno, int width,
+		 enum ui_align align, char *fldname, const char *string)
+{
+  if (!uiout->impl->field_string)
+    return;
+  uiout->impl->field_string (uiout, fldno, width, align, fldname, string);
+}
+
+void
+uo_field_fmt (struct ui_out *uiout, int fldno, int width, enum ui_align align, char *fldname, char *format, va_list args)
+{
+  if (!uiout->impl->field_fmt)
+    return;
+  uiout->impl->field_fmt (uiout, fldno, width, align, fldname, format, args);
+}
+
+void
+uo_spaces (struct ui_out *uiout, int numspaces)
+{
+  if (!uiout->impl->spaces)
+    return;
+  uiout->impl->spaces (uiout, numspaces);
+}
+
+void
+uo_text (struct ui_out *uiout, char *string)
+{
+  if (!uiout->impl->text)
+    return;
+  uiout->impl->text (uiout, string);
+}
+
+void
+uo_message (struct ui_out *uiout, int verbosity, char *format, va_list args)
+{
+  if (!uiout->impl->message)
+    return;
+  uiout->impl->message (uiout, verbosity, format, args);
+}
+
+void
+uo_wrap_hint (struct ui_out *uiout, char *identstring)
+{
+  if (!uiout->impl->wrap_hint)
+    return;
+  uiout->impl->wrap_hint (uiout, identstring);
+}
+
+void
+uo_flush (struct ui_out *uiout)
+{
+  if (!uiout->impl->flush)
+    return;
+  uiout->impl->flush (uiout);
+}
+
+/* local functions */
+
+/* list of column headers manipulation routines */
+
+static void
+clear_header_list (uiout)
+     struct ui_out *uiout;
+{
+  while (uiout->headerfirst != NULL)
+    {
+      uiout->headercurr = uiout->headerfirst;
+      uiout->headerfirst = uiout->headerfirst->next;
+      if (uiout->headercurr->colhdr != NULL)
+	free (uiout->headercurr->colhdr);
+      free (uiout->headercurr);
+    }
+  uiout->headerlast = NULL;
+  uiout->headercurr = NULL;
+}
+
+static void
+append_header_to_list (struct ui_out *uiout,
+		       int width,
+		       int alignment,
+		       char *colhdr)
+{
+  struct ui_out_hdr *temphdr;
+
+  temphdr = XMALLOC (struct ui_out_hdr);
+  temphdr->width = width;
+  temphdr->alignment = alignment;
+  /* we have to copy the column title as the original may be an automatic */
+  if (colhdr != NULL)
+    {
+      temphdr->colhdr = xmalloc (strlen (colhdr) + 1);
+      strcpy (temphdr->colhdr, colhdr);
+    }
+  temphdr->next = NULL;
+  if (uiout->headerfirst == NULL)
+    {
+      temphdr->colno = 1;
+      uiout->headerfirst = temphdr;
+      uiout->headerlast = temphdr;
+    }
+  else
+    {
+      temphdr->colno = uiout->headerlast->colno + 1;
+      uiout->headerlast->next = temphdr;
+      uiout->headerlast = temphdr;
+    }
+  uiout->headercurr = uiout->headerlast;
+}
+
+/* returns 0 if there is no more headers */
+
+static int
+get_curr_header (struct ui_out *uiout,
+		 int *colno,
+		 int *width,
+		 int *alignment,
+		 char **colhdr)
+{
+  /* There may be no headers at all or we may have used all columns */
+  if (uiout->headercurr == NULL)
+    return 0;
+  *colno = uiout->headercurr->colno;
+  *width = uiout->headercurr->width;
+  *alignment = uiout->headercurr->alignment;
+  *colhdr = uiout->headercurr->colhdr;
+  uiout->headercurr = uiout->headercurr->next;
+  return 1;
+}
+
+/* makes sure the field_* calls were properly placed */
+
+static void
+verify_field_proper_position (struct ui_out *uiout)
+{
+  if (uiout->table_flag)
+    {
+      if (!uiout->body_flag)
+	internal_error ("ui_out: table_body missing; table fields must be \
+specified after table_body and inside a list.");
+      if (!uiout->list_flag)
+	internal_error ("ui_out: list_begin missing; table fields must be \
+specified after table_body and inside a list.");
+    }
+}
+
+/* determines what is the alignment policy */
+
+static void
+verify_field_alignment (struct ui_out *uiout,
+			int fldno,
+			int *width,
+			int *align)
+{
+  int colno;
+  char *text;
+
+  if (uiout->table_flag
+      && get_curr_header (uiout, &colno, width, align, &text))
+    {
+      if (fldno != colno)
+	internal_error ("gdb/ui-out.c: ui-out internal error in handling headers.");
+    }
+  else
+    {
+      *width = 0;
+      *align = ui_noalign;
+    }
+}
+
+/* access to ui_out format private members */
+
+void
+ui_out_get_field_separator (uiout)
+     struct ui_out *uiout;
+{
+}
+
+/* Access to ui-out members data */
+
+struct ui_out_data *
+ui_out_data (struct ui_out *uiout)
+{
+  return uiout->data;
+}
+
+/* initalize private members at startup */
+
+struct ui_out *
+ui_out_new (struct ui_out_impl *impl,
+	    struct ui_out_data *data,
+	    int flags)
+{
+  struct ui_out *uiout = XMALLOC (struct ui_out);
+  uiout->data = data;
+  uiout->impl = impl;
+  uiout->flags = flags;
+  uiout->table_flag = 0;
+  uiout->body_flag = 0;
+  uiout->list_flag = 0;
+  uiout->field_count[0] = 0;
+  uiout->headerfirst = NULL;
+  uiout->headerlast = NULL;
+  uiout->headercurr = NULL;
+  return uiout;
+}
+
+/* standard gdb initialization hook */
+
+void
+_initialize_ui_out ()
+{
+  /* nothing needs to be done */
+}