772 lines
22 KiB
C
772 lines
22 KiB
C
/* TUI display registers in window.
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009,
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2010, 2011 Free Software Foundation, Inc.
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Contributed by Hewlett-Packard Company.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "arch-utils.h"
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#include "tui/tui.h"
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#include "tui/tui-data.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "gdbcmd.h"
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#include "frame.h"
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#include "regcache.h"
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#include "inferior.h"
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#include "target.h"
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#include "gdb_string.h"
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#include "tui/tui-layout.h"
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#include "tui/tui-win.h"
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#include "tui/tui-windata.h"
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#include "tui/tui-wingeneral.h"
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#include "tui/tui-file.h"
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#include "tui/tui-regs.h"
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#include "reggroups.h"
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#include "valprint.h"
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#include "gdb_curses.h"
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/*****************************************
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** STATIC LOCAL FUNCTIONS FORWARD DECLS **
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******************************************/
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static void
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tui_display_register (struct tui_data_element *data,
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struct tui_gen_win_info *win_info);
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static enum tui_status tui_show_register_group (struct reggroup *group,
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struct frame_info *frame,
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int refresh_values_only);
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static enum tui_status tui_get_register (struct frame_info *frame,
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struct tui_data_element *data,
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int regnum, int *changedp);
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static void tui_register_format (struct frame_info *,
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struct tui_data_element*, int);
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static void tui_scroll_regs_forward_command (char *, int);
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static void tui_scroll_regs_backward_command (char *, int);
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/*****************************************
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** PUBLIC FUNCTIONS **
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******************************************/
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/* Answer the number of the last line in the regs display. If there
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are no registers (-1) is returned. */
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int
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tui_last_regs_line_no (void)
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{
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int num_lines = (-1);
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if (TUI_DATA_WIN->detail.data_display_info.regs_content_count > 0)
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{
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num_lines = (TUI_DATA_WIN->detail.data_display_info.regs_content_count /
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TUI_DATA_WIN->detail.data_display_info.regs_column_count);
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if (TUI_DATA_WIN->detail.data_display_info.regs_content_count %
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TUI_DATA_WIN->detail.data_display_info.regs_column_count)
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num_lines++;
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}
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return num_lines;
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}
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/* Answer the line number that the register element at element_no is
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on. If element_no is greater than the number of register elements
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there are, -1 is returned. */
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int
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tui_line_from_reg_element_no (int element_no)
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{
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if (element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count)
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{
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int i, line = (-1);
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i = 1;
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while (line == (-1))
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{
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if (element_no <
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(TUI_DATA_WIN->detail.data_display_info.regs_column_count * i))
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line = i - 1;
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else
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i++;
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}
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return line;
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}
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else
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return (-1);
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}
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/* Answer the index of the first element in line_no. If line_no is
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past the register area (-1) is returned. */
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int
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tui_first_reg_element_no_inline (int line_no)
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{
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if ((line_no * TUI_DATA_WIN->detail.data_display_info.regs_column_count)
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<= TUI_DATA_WIN->detail.data_display_info.regs_content_count)
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return ((line_no + 1) *
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TUI_DATA_WIN->detail.data_display_info.regs_column_count) -
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TUI_DATA_WIN->detail.data_display_info.regs_column_count;
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else
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return (-1);
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}
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/* Answer the index of the last element in line_no. If line_no is
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past the register area (-1) is returned. */
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int
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tui_last_reg_element_no_in_line (int line_no)
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{
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if ((line_no * TUI_DATA_WIN->detail.data_display_info.regs_column_count) <=
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TUI_DATA_WIN->detail.data_display_info.regs_content_count)
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return ((line_no + 1) *
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TUI_DATA_WIN->detail.data_display_info.regs_column_count) - 1;
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else
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return (-1);
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}
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/* Show the registers of the given group in the data window
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and refresh the window. */
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void
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tui_show_registers (struct reggroup *group)
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{
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enum tui_status ret = TUI_FAILURE;
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struct tui_data_info *display_info;
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/* Make sure the curses mode is enabled. */
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tui_enable ();
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/* Make sure the register window is visible. If not, select an
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appropriate layout. */
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if (TUI_DATA_WIN == NULL || !TUI_DATA_WIN->generic.is_visible)
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tui_set_layout_for_display_command (DATA_NAME);
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display_info = &TUI_DATA_WIN->detail.data_display_info;
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if (group == 0)
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group = general_reggroup;
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/* Say that registers should be displayed, even if there is a
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problem. */
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display_info->display_regs = TRUE;
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if (target_has_registers && target_has_stack && target_has_memory)
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{
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ret = tui_show_register_group (group, get_current_frame (),
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group == display_info->current_group);
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}
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if (ret == TUI_FAILURE)
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{
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display_info->current_group = 0;
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tui_erase_data_content (NO_REGS_STRING);
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}
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else
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{
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int i;
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/* Clear all notation of changed values. */
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for (i = 0; i < display_info->regs_content_count; i++)
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{
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struct tui_gen_win_info *data_item_win;
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struct tui_win_element *win;
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data_item_win = &display_info->regs_content[i]
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->which_element.data_window;
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win = (struct tui_win_element *) data_item_win->content[0];
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win->which_element.data.highlight = FALSE;
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}
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display_info->current_group = group;
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tui_display_all_data ();
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}
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}
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/* Set the data window to display the registers of the register group
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using the given frame. Values are refreshed only when
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refresh_values_only is TRUE. */
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static enum tui_status
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tui_show_register_group (struct reggroup *group,
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struct frame_info *frame,
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int refresh_values_only)
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{
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struct gdbarch *gdbarch = get_frame_arch (frame);
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enum tui_status ret = TUI_FAILURE;
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int nr_regs;
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int allocated_here = FALSE;
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int regnum, pos;
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char title[80];
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struct tui_data_info *display_info = &TUI_DATA_WIN->detail.data_display_info;
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/* Make a new title showing which group we display. */
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snprintf (title, sizeof (title) - 1, "Register group: %s",
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reggroup_name (group));
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xfree (TUI_DATA_WIN->generic.title);
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TUI_DATA_WIN->generic.title = xstrdup (title);
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/* See how many registers must be displayed. */
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nr_regs = 0;
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for (regnum = 0;
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regnum < gdbarch_num_regs (gdbarch)
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+ gdbarch_num_pseudo_regs (gdbarch);
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regnum++)
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{
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/* Must be in the group and have a name. */
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if (gdbarch_register_reggroup_p (gdbarch, regnum, group)
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&& gdbarch_register_name (gdbarch, regnum) != 0)
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nr_regs++;
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}
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if (display_info->regs_content_count > 0 && !refresh_values_only)
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{
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tui_free_data_content (display_info->regs_content,
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display_info->regs_content_count);
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display_info->regs_content_count = 0;
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}
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if (display_info->regs_content_count <= 0)
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{
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display_info->regs_content = tui_alloc_content (nr_regs, DATA_WIN);
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allocated_here = TRUE;
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refresh_values_only = FALSE;
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}
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if (display_info->regs_content != (tui_win_content) NULL)
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{
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if (!refresh_values_only || allocated_here)
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{
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TUI_DATA_WIN->generic.content = (void*) NULL;
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TUI_DATA_WIN->generic.content_size = 0;
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tui_add_content_elements (&TUI_DATA_WIN->generic, nr_regs);
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display_info->regs_content
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= (tui_win_content) TUI_DATA_WIN->generic.content;
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display_info->regs_content_count = nr_regs;
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}
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/* Now set the register names and values. */
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pos = 0;
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for (regnum = 0;
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regnum < gdbarch_num_regs (gdbarch)
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+ gdbarch_num_pseudo_regs (gdbarch);
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regnum++)
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{
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struct tui_gen_win_info *data_item_win;
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struct tui_data_element *data;
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const char *name;
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if (!gdbarch_register_reggroup_p (gdbarch, regnum, group))
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continue;
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name = gdbarch_register_name (gdbarch, regnum);
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if (name == 0)
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continue;
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data_item_win =
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&display_info->regs_content[pos]->which_element.data_window;
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data = &((struct tui_win_element *)
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data_item_win->content[0])->which_element.data;
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if (data)
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{
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if (!refresh_values_only)
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{
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data->item_no = regnum;
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data->name = name;
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data->highlight = FALSE;
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}
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if (data->value == (void*) NULL)
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data->value = (void*) xmalloc (MAX_REGISTER_SIZE);
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tui_get_register (frame, data, regnum, 0);
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}
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pos++;
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}
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TUI_DATA_WIN->generic.content_size =
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display_info->regs_content_count + display_info->data_content_count;
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ret = TUI_SUCCESS;
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}
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return ret;
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}
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/* Function to display the registers in the content from
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'start_element_no' until the end of the register content or the end
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of the display height. No checking for displaying past the end of
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the registers is done here. */
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void
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tui_display_registers_from (int start_element_no)
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{
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struct tui_data_info *display_info = &TUI_DATA_WIN->detail.data_display_info;
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if (display_info->regs_content != (tui_win_content) NULL
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&& display_info->regs_content_count > 0)
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{
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int i = start_element_no;
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int j, item_win_width, cur_y;
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int max_len = 0;
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for (i = 0; i < display_info->regs_content_count; i++)
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{
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struct tui_data_element *data;
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struct tui_gen_win_info *data_item_win;
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char *p;
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int len;
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data_item_win
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= &display_info->regs_content[i]->which_element.data_window;
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data = &((struct tui_win_element *)
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data_item_win->content[0])->which_element.data;
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len = 0;
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p = data->content;
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if (p != 0)
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while (*p)
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{
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if (*p++ == '\t')
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len = 8 * ((len / 8) + 1);
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else
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len++;
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}
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if (len > max_len)
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max_len = len;
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}
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item_win_width = max_len + 1;
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i = start_element_no;
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display_info->regs_column_count =
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(TUI_DATA_WIN->generic.width - 2) / item_win_width;
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if (display_info->regs_column_count == 0)
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display_info->regs_column_count = 1;
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item_win_width =
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(TUI_DATA_WIN->generic.width - 2) / display_info->regs_column_count;
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/* Now create each data "sub" window, and write the display into
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it. */
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cur_y = 1;
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while (i < display_info->regs_content_count
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&& cur_y <= TUI_DATA_WIN->generic.viewport_height)
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{
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for (j = 0;
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j < display_info->regs_column_count
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&& i < display_info->regs_content_count;
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j++)
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{
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struct tui_gen_win_info *data_item_win;
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struct tui_data_element *data_element_ptr;
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/* Create the window if necessary. */
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data_item_win = &display_info->regs_content[i]
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->which_element.data_window;
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data_element_ptr = &((struct tui_win_element *)
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data_item_win->content[0])->which_element.data;
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if (data_item_win->handle != (WINDOW*) NULL
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&& (data_item_win->height != 1
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|| data_item_win->width != item_win_width
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|| data_item_win->origin.x != (item_win_width * j) + 1
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|| data_item_win->origin.y != cur_y))
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{
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tui_delete_win (data_item_win->handle);
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data_item_win->handle = 0;
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}
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if (data_item_win->handle == (WINDOW *) NULL)
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{
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data_item_win->height = 1;
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data_item_win->width = item_win_width;
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data_item_win->origin.x = (item_win_width * j) + 1;
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data_item_win->origin.y = cur_y;
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tui_make_window (data_item_win, DONT_BOX_WINDOW);
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scrollok (data_item_win->handle, FALSE);
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}
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touchwin (data_item_win->handle);
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/* Get the printable representation of the register
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and display it. */
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tui_display_register (data_element_ptr, data_item_win);
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i++; /* Next register. */
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}
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cur_y++; /* Next row. */
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}
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}
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}
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/* Function to display the registers in the content from
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'start_element_no' on 'start_line_no' until the end of the register
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content or the end of the display height. This function checks
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that we won't display off the end of the register display. */
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static void
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tui_display_reg_element_at_line (int start_element_no,
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int start_line_no)
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{
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if (TUI_DATA_WIN->detail.data_display_info.regs_content
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!= (tui_win_content) NULL
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&& TUI_DATA_WIN->detail.data_display_info.regs_content_count > 0)
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{
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int element_no = start_element_no;
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if (start_element_no != 0 && start_line_no != 0)
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{
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int last_line_no, first_line_on_last_page;
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last_line_no = tui_last_regs_line_no ();
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first_line_on_last_page
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= last_line_no - (TUI_DATA_WIN->generic.height - 2);
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if (first_line_on_last_page < 0)
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first_line_on_last_page = 0;
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/* If there is no other data displayed except registers, and
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the element_no causes us to scroll past the end of the
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registers, adjust what element to really start the
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display at. */
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if (TUI_DATA_WIN->detail.data_display_info.data_content_count <= 0
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&& start_line_no > first_line_on_last_page)
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element_no
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= tui_first_reg_element_no_inline (first_line_on_last_page);
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}
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tui_display_registers_from (element_no);
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}
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}
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/* Function to display the registers starting at line line_no in the
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data window. Answers the line number that the display actually
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started from. If nothing is displayed (-1) is returned. */
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int
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tui_display_registers_from_line (int line_no,
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int force_display)
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{
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if (TUI_DATA_WIN->detail.data_display_info.regs_content_count > 0)
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{
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int line, element_no;
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if (line_no < 0)
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line = 0;
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else if (force_display)
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{ /* If we must display regs (force_display is true), then
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make sure that we don't display off the end of the
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registers. */
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if (line_no >= tui_last_regs_line_no ())
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{
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if ((line = tui_line_from_reg_element_no (
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TUI_DATA_WIN->detail.data_display_info.regs_content_count - 1)) < 0)
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line = 0;
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}
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else
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line = line_no;
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}
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else
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line = line_no;
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element_no = tui_first_reg_element_no_inline (line);
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if (element_no
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< TUI_DATA_WIN->detail.data_display_info.regs_content_count)
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tui_display_reg_element_at_line (element_no, line);
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else
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line = (-1);
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return line;
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}
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return (-1); /* Nothing was displayed. */
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}
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/* This function check all displayed registers for changes in values,
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given a particular frame. If the values have changed, they are
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updated with the new value and highlighted. */
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void
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tui_check_register_values (struct frame_info *frame)
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{
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if (TUI_DATA_WIN != NULL
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&& TUI_DATA_WIN->generic.is_visible)
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{
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struct tui_data_info *display_info
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= &TUI_DATA_WIN->detail.data_display_info;
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if (display_info->regs_content_count <= 0
|
|
&& display_info->display_regs)
|
|
tui_show_registers (display_info->current_group);
|
|
else
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; (i < display_info->regs_content_count); i++)
|
|
{
|
|
struct tui_data_element *data;
|
|
struct tui_gen_win_info *data_item_win_ptr;
|
|
int was_hilighted;
|
|
|
|
data_item_win_ptr = &display_info->regs_content[i]->
|
|
which_element.data_window;
|
|
data = &((struct tui_win_element *)
|
|
data_item_win_ptr->content[0])->which_element.data;
|
|
was_hilighted = data->highlight;
|
|
|
|
tui_get_register (frame, data,
|
|
data->item_no, &data->highlight);
|
|
|
|
if (data->highlight || was_hilighted)
|
|
{
|
|
tui_display_register (data, data_item_win_ptr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Display a register in a window. If hilite is TRUE, then the value
|
|
will be displayed in reverse video. */
|
|
static void
|
|
tui_display_register (struct tui_data_element *data,
|
|
struct tui_gen_win_info *win_info)
|
|
{
|
|
if (win_info->handle != (WINDOW *) NULL)
|
|
{
|
|
int i;
|
|
|
|
if (data->highlight)
|
|
/* We ignore the return value, casting it to void in order to avoid
|
|
a compiler warning. The warning itself was introduced by a patch
|
|
to ncurses 5.7 dated 2009-08-29, changing this macro to expand
|
|
to code that causes the compiler to generate an unused-value
|
|
warning. */
|
|
(void) wstandout (win_info->handle);
|
|
|
|
wmove (win_info->handle, 0, 0);
|
|
for (i = 1; i < win_info->width; i++)
|
|
waddch (win_info->handle, ' ');
|
|
wmove (win_info->handle, 0, 0);
|
|
if (data->content)
|
|
waddstr (win_info->handle, data->content);
|
|
|
|
if (data->highlight)
|
|
/* We ignore the return value, casting it to void in order to avoid
|
|
a compiler warning. The warning itself was introduced by a patch
|
|
to ncurses 5.7 dated 2009-08-29, changing this macro to expand
|
|
to code that causes the compiler to generate an unused-value
|
|
warning. */
|
|
(void) wstandend (win_info->handle);
|
|
tui_refresh_win (win_info);
|
|
}
|
|
}
|
|
|
|
static void
|
|
tui_reg_next_command (char *arg, int from_tty)
|
|
{
|
|
struct gdbarch *gdbarch = get_current_arch ();
|
|
|
|
if (TUI_DATA_WIN != 0)
|
|
{
|
|
struct reggroup *group
|
|
= TUI_DATA_WIN->detail.data_display_info.current_group;
|
|
|
|
group = reggroup_next (gdbarch, group);
|
|
if (group == 0)
|
|
group = reggroup_next (gdbarch, 0);
|
|
|
|
if (group)
|
|
tui_show_registers (group);
|
|
}
|
|
}
|
|
|
|
static void
|
|
tui_reg_float_command (char *arg, int from_tty)
|
|
{
|
|
tui_show_registers (float_reggroup);
|
|
}
|
|
|
|
static void
|
|
tui_reg_general_command (char *arg, int from_tty)
|
|
{
|
|
tui_show_registers (general_reggroup);
|
|
}
|
|
|
|
static void
|
|
tui_reg_system_command (char *arg, int from_tty)
|
|
{
|
|
tui_show_registers (system_reggroup);
|
|
}
|
|
|
|
static struct cmd_list_element *tuireglist;
|
|
|
|
static void
|
|
tui_reg_command (char *args, int from_tty)
|
|
{
|
|
printf_unfiltered (_("\"tui reg\" must be followed by the name of a "
|
|
"tui reg command.\n"));
|
|
help_list (tuireglist, "tui reg ", -1, gdb_stdout);
|
|
}
|
|
|
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
|
extern initialize_file_ftype _initialize_tui_regs;
|
|
|
|
void
|
|
_initialize_tui_regs (void)
|
|
{
|
|
struct cmd_list_element **tuicmd;
|
|
|
|
tuicmd = tui_get_cmd_list ();
|
|
|
|
add_prefix_cmd ("reg", class_tui, tui_reg_command,
|
|
_("TUI commands to control the register window."),
|
|
&tuireglist, "tui reg ", 0,
|
|
tuicmd);
|
|
|
|
add_cmd ("float", class_tui, tui_reg_float_command,
|
|
_("Display only floating point registers."),
|
|
&tuireglist);
|
|
add_cmd ("general", class_tui, tui_reg_general_command,
|
|
_("Display only general registers."),
|
|
&tuireglist);
|
|
add_cmd ("system", class_tui, tui_reg_system_command,
|
|
_("Display only system registers."),
|
|
&tuireglist);
|
|
add_cmd ("next", class_tui, tui_reg_next_command,
|
|
_("Display next register group."),
|
|
&tuireglist);
|
|
|
|
if (xdb_commands)
|
|
{
|
|
add_com ("fr", class_tui, tui_reg_float_command,
|
|
_("Display only floating point registers\n"));
|
|
add_com ("gr", class_tui, tui_reg_general_command,
|
|
_("Display only general registers\n"));
|
|
add_com ("sr", class_tui, tui_reg_system_command,
|
|
_("Display only special registers\n"));
|
|
add_com ("+r", class_tui, tui_scroll_regs_forward_command,
|
|
_("Scroll the registers window forward\n"));
|
|
add_com ("-r", class_tui, tui_scroll_regs_backward_command,
|
|
_("Scroll the register window backward\n"));
|
|
}
|
|
}
|
|
|
|
|
|
/*****************************************
|
|
** STATIC LOCAL FUNCTIONS **
|
|
******************************************/
|
|
|
|
extern int pagination_enabled;
|
|
|
|
static void
|
|
tui_restore_gdbout (void *ui)
|
|
{
|
|
ui_file_delete (gdb_stdout);
|
|
gdb_stdout = (struct ui_file*) ui;
|
|
pagination_enabled = 1;
|
|
}
|
|
|
|
/* Get the register from the frame and make a printable representation
|
|
of it in the data element. */
|
|
static void
|
|
tui_register_format (struct frame_info *frame,
|
|
struct tui_data_element *data_element,
|
|
int regnum)
|
|
{
|
|
struct gdbarch *gdbarch = get_frame_arch (frame);
|
|
struct ui_file *stream;
|
|
struct ui_file *old_stdout;
|
|
const char *name;
|
|
struct cleanup *cleanups;
|
|
char *p, *s;
|
|
|
|
name = gdbarch_register_name (gdbarch, regnum);
|
|
if (name == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
pagination_enabled = 0;
|
|
old_stdout = gdb_stdout;
|
|
stream = tui_sfileopen (256);
|
|
gdb_stdout = stream;
|
|
cleanups = make_cleanup (tui_restore_gdbout, (void*) old_stdout);
|
|
gdbarch_print_registers_info (gdbarch, stream, frame, regnum, 1);
|
|
|
|
/* Save formatted output in the buffer. */
|
|
p = tui_file_get_strbuf (stream);
|
|
|
|
/* Remove the possible \n. */
|
|
s = strrchr (p, '\n');
|
|
if (s && s[1] == 0)
|
|
*s = 0;
|
|
|
|
xfree (data_element->content);
|
|
data_element->content = xstrdup (p);
|
|
do_cleanups (cleanups);
|
|
}
|
|
|
|
/* Get the register value from the given frame and format it for the
|
|
display. When changep is set, check if the new register value has
|
|
changed with respect to the previous call. */
|
|
static enum tui_status
|
|
tui_get_register (struct frame_info *frame,
|
|
struct tui_data_element *data,
|
|
int regnum, int *changedp)
|
|
{
|
|
enum tui_status ret = TUI_FAILURE;
|
|
|
|
if (changedp)
|
|
*changedp = FALSE;
|
|
if (target_has_registers)
|
|
{
|
|
gdb_byte buf[MAX_REGISTER_SIZE];
|
|
|
|
get_frame_register (frame, regnum, buf);
|
|
if (changedp)
|
|
{
|
|
struct gdbarch *gdbarch = get_frame_arch (frame);
|
|
int size = register_size (gdbarch, regnum);
|
|
char *old = (char*) data->value;
|
|
int i;
|
|
|
|
for (i = 0; i < size; i++)
|
|
if (buf[i] != old[i])
|
|
{
|
|
*changedp = TRUE;
|
|
old[i] = buf[i];
|
|
}
|
|
}
|
|
|
|
/* Reformat the data content if the value changed. */
|
|
if (changedp == 0 || *changedp == TRUE)
|
|
tui_register_format (frame, data, regnum);
|
|
|
|
ret = TUI_SUCCESS;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
tui_scroll_regs_forward_command (char *arg, int from_tty)
|
|
{
|
|
tui_scroll (FORWARD_SCROLL, TUI_DATA_WIN, 1);
|
|
}
|
|
|
|
|
|
static void
|
|
tui_scroll_regs_backward_command (char *arg, int from_tty)
|
|
{
|
|
tui_scroll (BACKWARD_SCROLL, TUI_DATA_WIN, 1);
|
|
}
|