tuisourcewin.c

gdb-6.0 linux 下的调试工具

	}
      winInfo->detail.sourceInfo.horizontalOffset = offset;
      tuiUpdateSourceWindowAsIs (
				  winInfo,
				  s,
				  ((TuiWinElementPtr)
				   winInfo->generic.content[0])->whichElement.source.lineOrAddr,
				  FALSE);
    }

  return;
}				/* tuiHorizontalSourceScroll */


/* Set or clear the hasBreak flag in the line whose line is lineNo.  */
void
tuiSetIsExecPointAt (TuiLineOrAddress l, TuiWinInfoPtr winInfo)
{
  int changed = 0;
  int i;
  TuiWinContent content = (TuiWinContent) winInfo->generic.content;

  i = 0;
  while (i < winInfo->generic.contentSize)
    {
      int newState;

      if (content[i]->whichElement.source.lineOrAddr.addr == l.addr)
        newState = TRUE;
      else
	newState = FALSE;
      if (newState != content[i]->whichElement.source.isExecPoint)
        {
          changed++;
          content[i]->whichElement.source.isExecPoint = newState;
          tui_show_source_line (winInfo, i + 1);
        }
      i++;
    }
  if (changed)
    tuiRefreshWin (&winInfo->generic);
}

/* Update the execution windows to show the active breakpoints.
   This is called whenever a breakpoint is inserted, removed or
   has its state changed.  */
void
tui_update_all_breakpoint_info ()
{
  TuiList* list = sourceWindows ();
  int i;

  for (i = 0; i < list->count; i++)
    {
      TuiWinInfoPtr win = (TuiWinInfoPtr) list->list[i];

      if (tui_update_breakpoint_info (win, FALSE))
        {
          tuiUpdateExecInfo (win);
        }
    }
}


/* Scan the source window and the breakpoints to update the
   hasBreak information for each line.
   Returns 1 if something changed and the execution window
   must be refreshed.  */
int
tui_update_breakpoint_info (TuiWinInfoPtr win, int current_only)
{
  int i;
  int need_refresh = 0;
  TuiSourceInfoPtr src = &win->detail.sourceInfo;

  for (i = 0; i < win->generic.contentSize; i++)
    {
      struct breakpoint *bp;
      extern struct breakpoint *breakpoint_chain;
      int mode;
      TuiSourceElement* line;

      line = &((TuiWinElementPtr) win->generic.content[i])->whichElement.source;
      if (current_only && !line->isExecPoint)
         continue;

      /* Scan each breakpoint to see if the current line has something to
         do with it.  Identify enable/disabled breakpoints as well as
         those that we already hit.  */
      mode = 0;
      for (bp = breakpoint_chain;
           bp != (struct breakpoint *) NULL;
           bp = bp->next)
        {
          if ((win == srcWin
               && bp->source_file
               && (strcmp (src->filename, bp->source_file) == 0)
               && bp->line_number == line->lineOrAddr.lineNo)
              || (win == disassemWin
                  && bp->address == line->lineOrAddr.addr))
            {
              if (bp->enable_state == bp_disabled)
                mode |= TUI_BP_DISABLED;
              else
                mode |= TUI_BP_ENABLED;
              if (bp->hit_count)
                mode |= TUI_BP_HIT;
              if (bp->cond)
                mode |= TUI_BP_CONDITIONAL;
              if (bp->type == bp_hardware_breakpoint)
                mode |= TUI_BP_HARDWARE;
            }
        }
      if (line->hasBreak != mode)
        {
          line->hasBreak = mode;
          need_refresh = 1;
        }
    }
  return need_refresh;
}


/*
   ** tuiSetExecInfoContent().
   **      Function to initialize the content of the execution info window,
   **      based upon the input window which is either the source or
   **      disassembly window.
 */
TuiStatus
tuiSetExecInfoContent (TuiWinInfoPtr winInfo)
{
  TuiStatus ret = TUI_SUCCESS;

  if (winInfo->detail.sourceInfo.executionInfo != (TuiGenWinInfoPtr) NULL)
    {
      TuiGenWinInfoPtr execInfoPtr = winInfo->detail.sourceInfo.executionInfo;

      if (execInfoPtr->content == (OpaquePtr) NULL)
	execInfoPtr->content =
	  (OpaquePtr) allocContent (winInfo->generic.height,
				    execInfoPtr->type);
      if (execInfoPtr->content != (OpaquePtr) NULL)
	{
	  int i;

          tui_update_breakpoint_info (winInfo, 1);
	  for (i = 0; i < winInfo->generic.contentSize; i++)
	    {
	      TuiWinElementPtr element;
	      TuiWinElementPtr srcElement;
              int mode;

	      element = (TuiWinElementPtr) execInfoPtr->content[i];
	      srcElement = (TuiWinElementPtr) winInfo->generic.content[i];

              memset(element->whichElement.simpleString, ' ',
                     sizeof(element->whichElement.simpleString));
              element->whichElement.simpleString[TUI_EXECINFO_SIZE - 1] = 0;

	      /* Now update the exec info content based upon the state
                 of each line as indicated by the source content.  */
              mode = srcElement->whichElement.source.hasBreak;
              if (mode & TUI_BP_HIT)
                element->whichElement.simpleString[TUI_BP_HIT_POS] =
                  (mode & TUI_BP_HARDWARE) ? 'H' : 'B';
              else if (mode & (TUI_BP_ENABLED | TUI_BP_DISABLED))
                element->whichElement.simpleString[TUI_BP_HIT_POS] =
                  (mode & TUI_BP_HARDWARE) ? 'h' : 'b';

              if (mode & TUI_BP_ENABLED)
                element->whichElement.simpleString[TUI_BP_BREAK_POS] = '+';
              else if (mode & TUI_BP_DISABLED)
                element->whichElement.simpleString[TUI_BP_BREAK_POS] = '-';

              if (srcElement->whichElement.source.isExecPoint)
                element->whichElement.simpleString[TUI_EXEC_POS] = '>';
	    }
	  execInfoPtr->contentSize = winInfo->generic.contentSize;
	}
      else
	ret = TUI_FAILURE;
    }

  return ret;
}


/*
   ** tuiShowExecInfoContent().
 */
void
tuiShowExecInfoContent (TuiWinInfoPtr winInfo)
{
  TuiGenWinInfoPtr execInfo = winInfo->detail.sourceInfo.executionInfo;
  int curLine;

  werase (execInfo->handle);
  tuiRefreshWin (execInfo);
  for (curLine = 1; (curLine <= execInfo->contentSize); curLine++)
    mvwaddstr (execInfo->handle,
	       curLine,
	       0,
	       ((TuiWinElementPtr)
		execInfo->content[curLine - 1])->whichElement.simpleString);
  tuiRefreshWin (execInfo);
  execInfo->contentInUse = TRUE;

  return;
}				/* tuiShowExecInfoContent */


/*
   ** tuiEraseExecInfoContent().
 */
void
tuiEraseExecInfoContent (TuiWinInfoPtr winInfo)
{
  TuiGenWinInfoPtr execInfo = winInfo->detail.sourceInfo.executionInfo;

  werase (execInfo->handle);
  tuiRefreshWin (execInfo);

  return;
}				/* tuiEraseExecInfoContent */

/*
   ** tuiClearExecInfoContent().
 */
void
tuiClearExecInfoContent (TuiWinInfoPtr winInfo)
{
  winInfo->detail.sourceInfo.executionInfo->contentInUse = FALSE;
  tuiEraseExecInfoContent (winInfo);

  return;
}				/* tuiClearExecInfoContent */

/*
   ** tuiUpdateExecInfo().
   **        Function to update the execution info window
 */
void
tuiUpdateExecInfo (TuiWinInfoPtr winInfo)
{
  tuiSetExecInfoContent (winInfo);
  tuiShowExecInfoContent (winInfo);
}				/* tuiUpdateExecInfo */

TuiStatus
tuiAllocSourceBuffer (TuiWinInfoPtr winInfo)
{
  register char *srcLineBuf;
  register int i, lineWidth, maxLines;
  TuiStatus ret = TUI_FAILURE;

  maxLines = winInfo->generic.height;	/* less the highlight box */
  lineWidth = winInfo->generic.width - 1;
  /*
     ** Allocate the buffer for the source lines.  Do this only once since they
     ** will be re-used for all source displays.  The only other time this will
     ** be done is when a window's size changes.
   */
  if (winInfo->generic.content == (OpaquePtr) NULL)
    {
      srcLineBuf = (char *) xmalloc ((maxLines * lineWidth) * sizeof (char));
      if (srcLineBuf == (char *) NULL)
	fputs_unfiltered (
	   "Unable to Allocate Memory for Source or Disassembly Display.\n",
			   gdb_stderr);
      else
	{
	  /* allocate the content list */
	  if ((winInfo->generic.content =
	  (OpaquePtr) allocContent (maxLines, SRC_WIN)) == (OpaquePtr) NULL)
	    {
	      tuiFree (srcLineBuf);
	      srcLineBuf = (char *) NULL;
	      fputs_unfiltered (
				 "Unable to Allocate Memory for Source or Disassembly Display.\n",
				 gdb_stderr);
	    }
	}
      for (i = 0; i < maxLines; i++)
	((TuiWinElementPtr)
	 winInfo->generic.content[i])->whichElement.source.line =
	  srcLineBuf + (lineWidth * i);
      ret = TUI_SUCCESS;
    }
  else
    ret = TUI_SUCCESS;

  return ret;
}				/* tuiAllocSourceBuffer */


/*
   ** tuiLineIsDisplayed().
   **      Answer whether the a particular line number or address is displayed
   **      in the current source window.
 */
int
tuiLineIsDisplayed (int line, TuiWinInfoPtr winInfo,
                    int checkThreshold)
{
  int isDisplayed = FALSE;
  int i, threshold;

  if (checkThreshold)
    threshold = SCROLL_THRESHOLD;
  else
    threshold = 0;
  i = 0;
  while (i < winInfo->generic.contentSize - threshold && !isDisplayed)
    {
      isDisplayed = (((TuiWinElementPtr)
		      winInfo->generic.content[i])->whichElement.source.lineOrAddr.lineNo
		     == (int) line);
      i++;
    }

  return isDisplayed;
}				/* tuiLineIsDisplayed */


/*
   ** tuiLineIsDisplayed().
   **      Answer whether the a particular line number or address is displayed
   **      in the current source window.
 */
int
tuiAddrIsDisplayed (CORE_ADDR addr, TuiWinInfoPtr winInfo,
		    int checkThreshold)
{
  int isDisplayed = FALSE;
  int i, threshold;

  if (checkThreshold)
    threshold = SCROLL_THRESHOLD;
  else
    threshold = 0;
  i = 0;
  while (i < winInfo->generic.contentSize - threshold && !isDisplayed)
    {
      isDisplayed = (((TuiWinElementPtr)
		      winInfo->generic.content[i])->whichElement.source.lineOrAddr.addr
		     == addr);
      i++;
    }

  return isDisplayed;
}


/*****************************************
** STATIC LOCAL FUNCTIONS               **
******************************************/