| /* TUI display registers in window. |
| |
| Copyright (C) 1998-2004, 2007-2012 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "arch-utils.h" |
| #include "tui/tui.h" |
| #include "tui/tui-data.h" |
| #include "symtab.h" |
| #include "gdbtypes.h" |
| #include "gdbcmd.h" |
| #include "frame.h" |
| #include "regcache.h" |
| #include "inferior.h" |
| #include "target.h" |
| #include "gdb_string.h" |
| #include "tui/tui-layout.h" |
| #include "tui/tui-win.h" |
| #include "tui/tui-windata.h" |
| #include "tui/tui-wingeneral.h" |
| #include "tui/tui-file.h" |
| #include "tui/tui-regs.h" |
| #include "reggroups.h" |
| #include "valprint.h" |
| |
| #include "gdb_curses.h" |
| |
| |
| /***************************************** |
| ** STATIC LOCAL FUNCTIONS FORWARD DECLS ** |
| ******************************************/ |
| static void |
| tui_display_register (struct tui_data_element *data, |
| struct tui_gen_win_info *win_info); |
| |
| static enum tui_status tui_show_register_group (struct reggroup *group, |
| struct frame_info *frame, |
| int refresh_values_only); |
| |
| static enum tui_status tui_get_register (struct frame_info *frame, |
| struct tui_data_element *data, |
| int regnum, int *changedp); |
| |
| static void tui_register_format (struct frame_info *, |
| struct tui_data_element*, int); |
| |
| static void tui_scroll_regs_forward_command (char *, int); |
| static void tui_scroll_regs_backward_command (char *, int); |
| |
| |
| |
| /***************************************** |
| ** PUBLIC FUNCTIONS ** |
| ******************************************/ |
| |
| /* Answer the number of the last line in the regs display. If there |
| are no registers (-1) is returned. */ |
| int |
| tui_last_regs_line_no (void) |
| { |
| int num_lines = (-1); |
| |
| if (TUI_DATA_WIN->detail.data_display_info.regs_content_count > 0) |
| { |
| num_lines = (TUI_DATA_WIN->detail.data_display_info.regs_content_count / |
| TUI_DATA_WIN->detail.data_display_info.regs_column_count); |
| if (TUI_DATA_WIN->detail.data_display_info.regs_content_count % |
| TUI_DATA_WIN->detail.data_display_info.regs_column_count) |
| num_lines++; |
| } |
| return num_lines; |
| } |
| |
| |
| /* Answer the line number that the register element at element_no is |
| on. If element_no is greater than the number of register elements |
| there are, -1 is returned. */ |
| int |
| tui_line_from_reg_element_no (int element_no) |
| { |
| if (element_no < TUI_DATA_WIN->detail.data_display_info.regs_content_count) |
| { |
| int i, line = (-1); |
| |
| i = 1; |
| while (line == (-1)) |
| { |
| if (element_no < |
| (TUI_DATA_WIN->detail.data_display_info.regs_column_count * i)) |
| line = i - 1; |
| else |
| i++; |
| } |
| |
| return line; |
| } |
| else |
| return (-1); |
| } |
| |
| |
| /* Answer the index of the first element in line_no. If line_no is |
| past the register area (-1) is returned. */ |
| int |
| tui_first_reg_element_no_inline (int line_no) |
| { |
| if ((line_no * TUI_DATA_WIN->detail.data_display_info.regs_column_count) |
| <= TUI_DATA_WIN->detail.data_display_info.regs_content_count) |
| return ((line_no + 1) * |
| TUI_DATA_WIN->detail.data_display_info.regs_column_count) - |
| TUI_DATA_WIN->detail.data_display_info.regs_column_count; |
| else |
| return (-1); |
| } |
| |
| |
| /* Show the registers of the given group in the data window |
| and refresh the window. */ |
| void |
| tui_show_registers (struct reggroup *group) |
| { |
| enum tui_status ret = TUI_FAILURE; |
| struct tui_data_info *display_info; |
| |
| /* Make sure the curses mode is enabled. */ |
| tui_enable (); |
| |
| /* Make sure the register window is visible. If not, select an |
| appropriate layout. */ |
| if (TUI_DATA_WIN == NULL || !TUI_DATA_WIN->generic.is_visible) |
| tui_set_layout_for_display_command (DATA_NAME); |
| |
| display_info = &TUI_DATA_WIN->detail.data_display_info; |
| if (group == 0) |
| group = general_reggroup; |
| |
| /* Say that registers should be displayed, even if there is a |
| problem. */ |
| display_info->display_regs = TRUE; |
| |
| if (target_has_registers && target_has_stack && target_has_memory) |
| { |
| ret = tui_show_register_group (group, get_current_frame (), |
| group == display_info->current_group); |
| } |
| if (ret == TUI_FAILURE) |
| { |
| display_info->current_group = 0; |
| tui_erase_data_content (NO_REGS_STRING); |
| } |
| else |
| { |
| int i; |
| |
| /* Clear all notation of changed values. */ |
| for (i = 0; i < display_info->regs_content_count; i++) |
| { |
| struct tui_gen_win_info *data_item_win; |
| struct tui_win_element *win; |
| |
| data_item_win = &display_info->regs_content[i] |
| ->which_element.data_window; |
| win = (struct tui_win_element *) data_item_win->content[0]; |
| win->which_element.data.highlight = FALSE; |
| } |
| display_info->current_group = group; |
| tui_display_all_data (); |
| } |
| } |
| |
| |
| /* Set the data window to display the registers of the register group |
| using the given frame. Values are refreshed only when |
| refresh_values_only is TRUE. */ |
| |
| static enum tui_status |
| tui_show_register_group (struct reggroup *group, |
| struct frame_info *frame, |
| int refresh_values_only) |
| { |
| struct gdbarch *gdbarch = get_frame_arch (frame); |
| enum tui_status ret = TUI_FAILURE; |
| int nr_regs; |
| int allocated_here = FALSE; |
| int regnum, pos; |
| char title[80]; |
| struct tui_data_info *display_info = &TUI_DATA_WIN->detail.data_display_info; |
| |
| /* Make a new title showing which group we display. */ |
| snprintf (title, sizeof (title) - 1, "Register group: %s", |
| reggroup_name (group)); |
| xfree (TUI_DATA_WIN->generic.title); |
| TUI_DATA_WIN->generic.title = xstrdup (title); |
| |
| /* See how many registers must be displayed. */ |
| nr_regs = 0; |
| for (regnum = 0; |
| regnum < gdbarch_num_regs (gdbarch) |
| + gdbarch_num_pseudo_regs (gdbarch); |
| regnum++) |
| { |
| const char *name; |
| |
| /* Must be in the group. */ |
| if (!gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
| continue; |
| |
| /* If the register name is empty, it is undefined for this |
| processor, so don't display anything. */ |
| name = gdbarch_register_name (gdbarch, regnum); |
| if (name == 0 || *name == '\0') |
| continue; |
| |
| nr_regs++; |
| } |
| |
| if (display_info->regs_content_count > 0 && !refresh_values_only) |
| { |
| tui_free_data_content (display_info->regs_content, |
| display_info->regs_content_count); |
| display_info->regs_content_count = 0; |
| } |
| |
| if (display_info->regs_content_count <= 0) |
| { |
| display_info->regs_content = tui_alloc_content (nr_regs, DATA_WIN); |
| allocated_here = TRUE; |
| refresh_values_only = FALSE; |
| } |
| |
| if (display_info->regs_content != (tui_win_content) NULL) |
| { |
| if (!refresh_values_only || allocated_here) |
| { |
| TUI_DATA_WIN->generic.content = (void*) NULL; |
| TUI_DATA_WIN->generic.content_size = 0; |
| tui_add_content_elements (&TUI_DATA_WIN->generic, nr_regs); |
| display_info->regs_content |
| = (tui_win_content) TUI_DATA_WIN->generic.content; |
| display_info->regs_content_count = nr_regs; |
| } |
| |
| /* Now set the register names and values. */ |
| pos = 0; |
| for (regnum = 0; |
| regnum < gdbarch_num_regs (gdbarch) |
| + gdbarch_num_pseudo_regs (gdbarch); |
| regnum++) |
| { |
| struct tui_gen_win_info *data_item_win; |
| struct tui_data_element *data; |
| const char *name; |
| |
| /* Must be in the group. */ |
| if (!gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
| continue; |
| |
| /* If the register name is empty, it is undefined for this |
| processor, so don't display anything. */ |
| name = gdbarch_register_name (gdbarch, regnum); |
| if (name == 0 || *name == '\0') |
| continue; |
| |
| data_item_win = |
| &display_info->regs_content[pos]->which_element.data_window; |
| data = &((struct tui_win_element *) |
| data_item_win->content[0])->which_element.data; |
| if (data) |
| { |
| if (!refresh_values_only) |
| { |
| data->item_no = regnum; |
| data->name = name; |
| data->highlight = FALSE; |
| } |
| tui_get_register (frame, data, regnum, 0); |
| } |
| pos++; |
| } |
| |
| TUI_DATA_WIN->generic.content_size = |
| display_info->regs_content_count + display_info->data_content_count; |
| ret = TUI_SUCCESS; |
| } |
| |
| return ret; |
| } |
| |
| /* Function to display the registers in the content from |
| 'start_element_no' until the end of the register content or the end |
| of the display height. No checking for displaying past the end of |
| the registers is done here. */ |
| void |
| tui_display_registers_from (int start_element_no) |
| { |
| struct tui_data_info *display_info = &TUI_DATA_WIN->detail.data_display_info; |
| |
| if (display_info->regs_content != (tui_win_content) NULL |
| && display_info->regs_content_count > 0) |
| { |
| int i = start_element_no; |
| int j, item_win_width, cur_y; |
| |
| int max_len = 0; |
| for (i = 0; i < display_info->regs_content_count; i++) |
| { |
| struct tui_data_element *data; |
| struct tui_gen_win_info *data_item_win; |
| char *p; |
| int len; |
| |
| data_item_win |
| = &display_info->regs_content[i]->which_element.data_window; |
| data = &((struct tui_win_element *) |
| data_item_win->content[0])->which_element.data; |
| len = 0; |
| p = data->content; |
| if (p != 0) |
| while (*p) |
| { |
| if (*p++ == '\t') |
| len = 8 * ((len / 8) + 1); |
| else |
| len++; |
| } |
| |
| if (len > max_len) |
| max_len = len; |
| } |
| item_win_width = max_len + 1; |
| i = start_element_no; |
| |
| display_info->regs_column_count = |
| (TUI_DATA_WIN->generic.width - 2) / item_win_width; |
| if (display_info->regs_column_count == 0) |
| display_info->regs_column_count = 1; |
| item_win_width = |
| (TUI_DATA_WIN->generic.width - 2) / display_info->regs_column_count; |
| |
| /* Now create each data "sub" window, and write the display into |
| it. */ |
| cur_y = 1; |
| while (i < display_info->regs_content_count |
| && cur_y <= TUI_DATA_WIN->generic.viewport_height) |
| { |
| for (j = 0; |
| j < display_info->regs_column_count |
| && i < display_info->regs_content_count; |
| j++) |
| { |
| struct tui_gen_win_info *data_item_win; |
| struct tui_data_element *data_element_ptr; |
| |
| /* Create the window if necessary. */ |
| data_item_win = &display_info->regs_content[i] |
| ->which_element.data_window; |
| data_element_ptr = &((struct tui_win_element *) |
| data_item_win->content[0])->which_element.data; |
| if (data_item_win->handle != (WINDOW*) NULL |
| && (data_item_win->height != 1 |
| || data_item_win->width != item_win_width |
| || data_item_win->origin.x != (item_win_width * j) + 1 |
| || data_item_win->origin.y != cur_y)) |
| { |
| tui_delete_win (data_item_win->handle); |
| data_item_win->handle = 0; |
| } |
| |
| if (data_item_win->handle == (WINDOW *) NULL) |
| { |
| data_item_win->height = 1; |
| data_item_win->width = item_win_width; |
| data_item_win->origin.x = (item_win_width * j) + 1; |
| data_item_win->origin.y = cur_y; |
| tui_make_window (data_item_win, DONT_BOX_WINDOW); |
| scrollok (data_item_win->handle, FALSE); |
| } |
| touchwin (data_item_win->handle); |
| |
| /* Get the printable representation of the register |
| and display it. */ |
| tui_display_register (data_element_ptr, data_item_win); |
| i++; /* Next register. */ |
| } |
| cur_y++; /* Next row. */ |
| } |
| } |
| } |
| |
| |
| /* Function to display the registers in the content from |
| 'start_element_no' on 'start_line_no' until the end of the register |
| content or the end of the display height. This function checks |
| that we won't display off the end of the register display. */ |
| static void |
| tui_display_reg_element_at_line (int start_element_no, |
| int start_line_no) |
| { |
| if (TUI_DATA_WIN->detail.data_display_info.regs_content |
| != (tui_win_content) NULL |
| && TUI_DATA_WIN->detail.data_display_info.regs_content_count > 0) |
| { |
| int element_no = start_element_no; |
| |
| if (start_element_no != 0 && start_line_no != 0) |
| { |
| int last_line_no, first_line_on_last_page; |
| |
| last_line_no = tui_last_regs_line_no (); |
| first_line_on_last_page |
| = last_line_no - (TUI_DATA_WIN->generic.height - 2); |
| if (first_line_on_last_page < 0) |
| first_line_on_last_page = 0; |
| |
| /* If there is no other data displayed except registers, and |
| the element_no causes us to scroll past the end of the |
| registers, adjust what element to really start the |
| display at. */ |
| if (TUI_DATA_WIN->detail.data_display_info.data_content_count <= 0 |
| && start_line_no > first_line_on_last_page) |
| element_no |
| = tui_first_reg_element_no_inline (first_line_on_last_page); |
| } |
| tui_display_registers_from (element_no); |
| } |
| } |
| |
| |
| |
| /* Function to display the registers starting at line line_no in the |
| data window. Answers the line number that the display actually |
| started from. If nothing is displayed (-1) is returned. */ |
| int |
| tui_display_registers_from_line (int line_no, |
| int force_display) |
| { |
| if (TUI_DATA_WIN->detail.data_display_info.regs_content_count > 0) |
| { |
| int line, element_no; |
| |
| if (line_no < 0) |
| line = 0; |
| else if (force_display) |
| { /* If we must display regs (force_display is true), then |
| make sure that we don't display off the end of the |
| registers. */ |
| if (line_no >= tui_last_regs_line_no ()) |
| { |
| if ((line = tui_line_from_reg_element_no ( |
| TUI_DATA_WIN->detail.data_display_info.regs_content_count - 1)) < 0) |
| line = 0; |
| } |
| else |
| line = line_no; |
| } |
| else |
| line = line_no; |
| |
| element_no = tui_first_reg_element_no_inline (line); |
| if (element_no |
| < TUI_DATA_WIN->detail.data_display_info.regs_content_count) |
| tui_display_reg_element_at_line (element_no, line); |
| else |
| line = (-1); |
| |
| return line; |
| } |
| |
| return (-1); /* Nothing was displayed. */ |
| } |
| |
| |
| /* This function check all displayed registers for changes in values, |
| given a particular frame. If the values have changed, they are |
| updated with the new value and highlighted. */ |
| void |
| tui_check_register_values (struct frame_info *frame) |
| { |
| if (TUI_DATA_WIN != NULL |
| && TUI_DATA_WIN->generic.is_visible) |
| { |
| struct tui_data_info *display_info |
| = &TUI_DATA_WIN->detail.data_display_info; |
| |
| 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 || *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) |
| { |
| struct value *old_val = data->value; |
| |
| data->value = get_frame_register_value (frame, regnum); |
| release_value (data->value); |
| if (changedp) |
| { |
| struct gdbarch *gdbarch = get_frame_arch (frame); |
| int size = register_size (gdbarch, regnum); |
| |
| if (value_optimized_out (data->value) != value_optimized_out (old_val) |
| || !value_available_contents_eq (data->value, 0, |
| old_val, 0, size)) |
| *changedp = TRUE; |
| } |
| |
| value_free (old_val); |
| |
| /* 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); |
| } |
