tui-data.c

这个是LINUX下的GDB调度工具的源码

/* TUI data manipulation routines.

   Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
   Foundation, Inc.

   Contributed by Hewlett-Packard Company.

   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 "symtab.h"
#include "tui/tui.h"
#include "tui/tui-data.h"
#include "tui/tui-wingeneral.h"

#include "gdb_string.h"
#include "gdb_curses.h"

/****************************
** GLOBAL DECLARATIONS
****************************/
struct tui_win_info *(tui_win_list[MAX_MAJOR_WINDOWS]);

/***************************
** Private data
****************************/
static enum tui_layout_type current_layout = UNDEFINED_LAYOUT;
static int term_height, term_width;
static struct tui_gen_win_info _locator;
static struct tui_gen_win_info exec_info[2];
static struct tui_win_info * src_win_list[2];
static struct tui_list source_windows = {(void **) src_win_list, 0};
static int default_tab_len = DEFAULT_TAB_LEN;
static struct tui_win_info * win_with_focus = (struct tui_win_info *) NULL;
static struct tui_layout_def layout_def =
{SRC_WIN,			/* DISPLAY_MODE */
 FALSE,				/* SPLIT */
 TUI_UNDEFINED_REGS,		/* REGS_DISPLAY_TYPE */
 TUI_SFLOAT_REGS};		/* FLOAT_REGS_DISPLAY_TYPE */
static int win_resized = FALSE;


/*********************************
** Static function forward decls
**********************************/
static void free_content (tui_win_content, int, enum tui_win_type);
static void free_content_elements (tui_win_content, int, enum tui_win_type);



/*********************************
** PUBLIC FUNCTIONS
**********************************/

int
tui_win_is_source_type (enum tui_win_type win_type)
{
  return (win_type == SRC_WIN || win_type == DISASSEM_WIN);
}

int
tui_win_is_auxillary (enum tui_win_type win_type)
{
  return (win_type > MAX_MAJOR_WINDOWS);
}

int
tui_win_has_locator (struct tui_win_info *win_info)
{
  return (win_info != NULL \
	  && win_info->detail.source_info.has_locator);
}

void
tui_set_win_highlight (struct tui_win_info *win_info, int highlight)
{
  if (win_info != NULL)
    win_info->is_highlighted = highlight;
}

/******************************************
** ACCESSORS & MUTATORS FOR PRIVATE DATA
******************************************/

/* Answer a whether the terminal window has been resized or not.   */
int
tui_win_resized (void)
{
  return win_resized;
}


/* Set a whether the terminal window has been resized or not.   */
void
tui_set_win_resized_to (int resized)
{
  win_resized = resized;
}


/* Answer a pointer to the current layout definition.   */
struct tui_layout_def *
tui_layout_def (void)
{
  return &layout_def;
}


/* Answer the window with the logical focus.    */
struct tui_win_info *
tui_win_with_focus (void)
{
  return win_with_focus;
}


/* Set the window that has the logical focus.   */
void
tui_set_win_with_focus (struct tui_win_info * win_info)
{
  win_with_focus = win_info;
}


/* Answer the length in chars, of tabs.    */
int
tui_default_tab_len (void)
{
  return default_tab_len;
}


/* Set the length in chars, of tabs.   */
void
tui_set_default_tab_len (int len)
{
  default_tab_len = len;
}


/* Accessor for the current source window.  Usually there is only one
   source window (either source or disassembly), but both can be
   displayed at the same time.  */
struct tui_list *
tui_source_windows (void)
{
  return &source_windows;
}


/* Clear the list of source windows.  Usually there is only one source
   window (either source or disassembly), but both can be displayed at
   the same time.  */
void
tui_clear_source_windows (void)
{
  source_windows.list[0] = NULL;
  source_windows.list[1] = NULL;
  source_windows.count = 0;
}


/* Clear the pertinant detail in the source windows.   */
void
tui_clear_source_windows_detail (void)
{
  int i;

  for (i = 0; i < (tui_source_windows ())->count; i++)
    tui_clear_win_detail ((struct tui_win_info *) (tui_source_windows ())->list[i]);
}


/* Add a window to the list of source windows.  Usually there is only
   one source window (either source or disassembly), but both can be
   displayed at the same time.  */
void
tui_add_to_source_windows (struct tui_win_info * win_info)
{
  if (source_windows.count < 2)
    source_windows.list[source_windows.count++] = (void *) win_info;
}


/* Clear the pertinant detail in the windows.   */
void
tui_clear_win_detail (struct tui_win_info * win_info)
{
  if (win_info != NULL)
    {
      switch (win_info->generic.type)
	{
	case SRC_WIN:
	case DISASSEM_WIN:
	  win_info->detail.source_info.start_line_or_addr.addr = 0;
	  win_info->detail.source_info.horizontal_offset = 0;
	  break;
	case CMD_WIN:
	  win_info->detail.command_info.cur_line =
	    win_info->detail.command_info.curch = 0;
	  break;
	case DATA_WIN:
	  win_info->detail.data_display_info.data_content =
	    (tui_win_content) NULL;
	  win_info->detail.data_display_info.data_content_count = 0;
	  win_info->detail.data_display_info.regs_content =
	    (tui_win_content) NULL;
	  win_info->detail.data_display_info.regs_content_count = 0;
	  win_info->detail.data_display_info.regs_display_type =
	    TUI_UNDEFINED_REGS;
	  win_info->detail.data_display_info.regs_column_count = 1;
	  win_info->detail.data_display_info.display_regs = FALSE;
	  break;
	default:
	  break;
	}
    }
}


/* Accessor for the source execution info ptr.  */
struct tui_gen_win_info *
tui_source_exec_info_win_ptr (void)
{
  return &exec_info[0];
}


/* Accessor for the disassem execution info ptr.  */
struct tui_gen_win_info *
tui_disassem_exec_info_win_ptr (void)
{
  return &exec_info[1];
}


/* Accessor for the locator win info.  Answers a pointer to the static
   locator win info struct.  */
struct tui_gen_win_info *
tui_locator_win_info_ptr (void)
{
  return &_locator;
}


/* Accessor for the term_height.  */
int
tui_term_height (void)
{
  return term_height;
}


/* Mutator for the term height.   */
void
tui_set_term_height_to (int h)
{
  term_height = h;
}


/* Accessor for the term_width.   */
int
tui_term_width (void)
{
  return term_width;
}


/* Mutator for the term_width.  */
void
tui_set_term_width_to (int w)
{
  term_width = w;
}


/* Accessor for the current layout.   */
enum tui_layout_type
tui_current_layout (void)
{
  return current_layout;
}


/* Mutator for the current layout.  */
void
tui_set_current_layout_to (enum tui_layout_type new_layout)
{
  current_layout = new_layout;
}


/* Set the origin of the window.  */
void
set_gen_win_origin (struct tui_gen_win_info * win_info, int x, int y)
{
  win_info->origin.x = x;
  win_info->origin.y = y;
}


/*****************************
** OTHER PUBLIC FUNCTIONS
*****************************/


/* Answer the next window in the list, cycling back to the top if
   necessary.  */
struct tui_win_info *
tui_next_win (struct tui_win_info * cur_win)
{
  enum tui_win_type type = cur_win->generic.type;
  struct tui_win_info * next_win = (struct tui_win_info *) NULL;

  if (cur_win->generic.type == CMD_WIN)
    type = SRC_WIN;
  else
    type = cur_win->generic.type + 1;
  while (type != cur_win->generic.type && (next_win == NULL))
    {
      if (tui_win_list[type] && tui_win_list[type]->generic.is_visible)
	next_win = tui_win_list[type];
      else
	{
	  if (type == CMD_WIN)
	    type = SRC_WIN;
	  else
	    type++;
	}
    }

  return next_win;
}


/* Answer the prev window in the list, cycling back to the bottom if
   necessary.  */
struct tui_win_info *
tui_prev_win (struct tui_win_info * cur_win)
{
  enum tui_win_type type = cur_win->generic.type;
  struct tui_win_info * prev = (struct tui_win_info *) NULL;

  if (cur_win->generic.type == SRC_WIN)
    type = CMD_WIN;
  else
    type = cur_win->generic.type - 1;
  while (type != cur_win->generic.type && (prev == NULL))
    {
      if (tui_win_list[type]->generic.is_visible)
	prev = tui_win_list[type];
      else
	{
	  if (type == SRC_WIN)
	    type = CMD_WIN;
	  else
	    type--;
	}
    }

  return prev;
}


/* Answer the window represented by name.    */
struct tui_win_info *
tui_partial_win_by_name (char *name)
{
  struct tui_win_info * win_info = (struct tui_win_info *) NULL;

  if (name != (char *) NULL)
    {
      int i = 0;

      while (i < MAX_MAJOR_WINDOWS && win_info == NULL)
	{
          if (tui_win_list[i] != 0)
            {
              char *cur_name = tui_win_name (&tui_win_list[i]->generic);
              if (strlen (name) <= strlen (cur_name) &&
                  strncmp (name, cur_name, strlen (name)) == 0)
                win_info = tui_win_list[i];
            }
	  i++;
	}
    }

  return win_info;
}


/* Answer the name of the window.  */
char *
tui_win_name (struct tui_gen_win_info * win_info)
{
  char *name = (char *) NULL;

  switch (win_info->type)
    {
    case SRC_WIN:
      name = SRC_NAME;
      break;
    case CMD_WIN:
      name = CMD_NAME;
      break;
    case DISASSEM_WIN:
      name = DISASSEM_NAME;
      break;
    case DATA_WIN:
      name = DATA_NAME;
      break;
    default:
      name = "";
      break;
    }

  return name;
}


void
tui_initialize_static_data (void)
{
  tui_init_generic_part (tui_source_exec_info_win_ptr ());
  tui_init_generic_part (tui_disassem_exec_info_win_ptr ());
  tui_init_generic_part (tui_locator_win_info_ptr ());
}


struct tui_gen_win_info *
tui_alloc_generic_win_info (void)
{
  struct tui_gen_win_info * win;

  if ((win = (struct tui_gen_win_info *) xmalloc (
		     sizeof (struct tui_gen_win_info *))) != (struct tui_gen_win_info *) NULL)
    tui_init_generic_part (win);

  return win;
}


void
tui_init_generic_part (struct tui_gen_win_info * win)
{
  win->width =
    win->height =