| /* TUI display source/assembly window. |
| |
| Copyright (C) 1998-2019 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 <ctype.h> |
| #include "symtab.h" |
| #include "frame.h" |
| #include "breakpoint.h" |
| #include "value.h" |
| #include "source.h" |
| #include "objfiles.h" |
| #include "filenames.h" |
| |
| #include "tui/tui.h" |
| #include "tui/tui-data.h" |
| #include "tui/tui-io.h" |
| #include "tui/tui-stack.h" |
| #include "tui/tui-win.h" |
| #include "tui/tui-wingeneral.h" |
| #include "tui/tui-winsource.h" |
| #include "tui/tui-source.h" |
| #include "tui/tui-disasm.h" |
| #include "gdb_curses.h" |
| |
| /* Function to display the "main" routine. */ |
| void |
| tui_display_main (void) |
| { |
| if ((tui_source_windows ())->count > 0) |
| { |
| struct gdbarch *gdbarch; |
| CORE_ADDR addr; |
| |
| tui_get_begin_asm_address (&gdbarch, &addr); |
| if (addr != (CORE_ADDR) 0) |
| { |
| struct symtab *s; |
| |
| tui_update_source_windows_with_addr (gdbarch, addr); |
| s = find_pc_line_symtab (addr); |
| if (s != NULL) |
| tui_update_locator_fullname (symtab_to_fullname (s)); |
| else |
| tui_update_locator_fullname ("??"); |
| } |
| } |
| } |
| |
| |
| |
| /* Function to display source in the source window. This function |
| initializes the horizontal scroll to 0. */ |
| void |
| tui_update_source_window (struct tui_win_info *win_info, |
| struct gdbarch *gdbarch, |
| struct symtab *s, |
| struct tui_line_or_address line_or_addr, |
| int noerror) |
| { |
| win_info->detail.source_info.horizontal_offset = 0; |
| tui_update_source_window_as_is (win_info, gdbarch, s, line_or_addr, noerror); |
| |
| return; |
| } |
| |
| |
| /* Function to display source in the source/asm window. This function |
| shows the source as specified by the horizontal offset. */ |
| void |
| tui_update_source_window_as_is (struct tui_win_info *win_info, |
| struct gdbarch *gdbarch, |
| struct symtab *s, |
| struct tui_line_or_address line_or_addr, |
| int noerror) |
| { |
| enum tui_status ret; |
| |
| if (win_info->generic.type == SRC_WIN) |
| ret = tui_set_source_content (s, line_or_addr.u.line_no, noerror); |
| else |
| ret = tui_set_disassem_content (gdbarch, line_or_addr.u.addr); |
| |
| if (ret == TUI_FAILURE) |
| { |
| tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT); |
| tui_clear_exec_info_content (win_info); |
| } |
| else |
| { |
| tui_update_breakpoint_info (win_info, 0); |
| tui_show_source_content (win_info); |
| tui_update_exec_info (win_info); |
| if (win_info->generic.type == SRC_WIN) |
| { |
| symtab_and_line sal; |
| |
| sal.line = line_or_addr.u.line_no + |
| (win_info->generic.content_size - 2); |
| sal.symtab = s; |
| sal.pspace = SYMTAB_PSPACE (s); |
| set_current_source_symtab_and_line (sal); |
| /* If the focus was in the asm win, put it in the src win if |
| we don't have a split layout. */ |
| if (tui_win_with_focus () == TUI_DISASM_WIN |
| && tui_current_layout () != SRC_DISASSEM_COMMAND) |
| tui_set_win_focus_to (TUI_SRC_WIN); |
| } |
| } |
| |
| |
| return; |
| } |
| |
| |
| /* Function to ensure that the source and/or disassemly windows |
| reflect the input address. */ |
| void |
| tui_update_source_windows_with_addr (struct gdbarch *gdbarch, CORE_ADDR addr) |
| { |
| if (addr != 0) |
| { |
| struct symtab_and_line sal; |
| struct tui_line_or_address l; |
| |
| switch (tui_current_layout ()) |
| { |
| case DISASSEM_COMMAND: |
| case DISASSEM_DATA_COMMAND: |
| tui_show_disassem (gdbarch, addr); |
| break; |
| case SRC_DISASSEM_COMMAND: |
| tui_show_disassem_and_update_source (gdbarch, addr); |
| break; |
| default: |
| sal = find_pc_line (addr, 0); |
| l.loa = LOA_LINE; |
| l.u.line_no = sal.line; |
| tui_show_symtab_source (gdbarch, sal.symtab, l, FALSE); |
| break; |
| } |
| } |
| else |
| { |
| int i; |
| |
| for (i = 0; i < (tui_source_windows ())->count; i++) |
| { |
| struct tui_win_info *win_info = (tui_source_windows ())->list[i]; |
| |
| tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT); |
| tui_clear_exec_info_content (win_info); |
| } |
| } |
| } |
| |
| /* Function to ensure that the source and/or disassemly windows |
| reflect the input address. */ |
| void |
| tui_update_source_windows_with_line (struct symtab *s, int line) |
| { |
| struct gdbarch *gdbarch; |
| CORE_ADDR pc; |
| struct tui_line_or_address l; |
| |
| if (!s) |
| return; |
| |
| gdbarch = get_objfile_arch (SYMTAB_OBJFILE (s)); |
| |
| switch (tui_current_layout ()) |
| { |
| case DISASSEM_COMMAND: |
| case DISASSEM_DATA_COMMAND: |
| find_line_pc (s, line, &pc); |
| tui_update_source_windows_with_addr (gdbarch, pc); |
| break; |
| default: |
| l.loa = LOA_LINE; |
| l.u.line_no = line; |
| tui_show_symtab_source (gdbarch, s, l, FALSE); |
| if (tui_current_layout () == SRC_DISASSEM_COMMAND) |
| { |
| find_line_pc (s, line, &pc); |
| tui_show_disassem (gdbarch, pc); |
| } |
| break; |
| } |
| |
| return; |
| } |
| |
| void |
| tui_clear_source_content (struct tui_win_info *win_info, |
| int display_prompt) |
| { |
| if (win_info != NULL) |
| { |
| int i; |
| |
| win_info->generic.content_in_use = FALSE; |
| tui_erase_source_content (win_info, display_prompt); |
| for (i = 0; i < win_info->generic.content_size; i++) |
| { |
| struct tui_win_element *element = win_info->generic.content[i]; |
| |
| element->which_element.source.has_break = FALSE; |
| element->which_element.source.is_exec_point = FALSE; |
| } |
| } |
| } |
| |
| |
| void |
| tui_erase_source_content (struct tui_win_info *win_info, |
| int display_prompt) |
| { |
| int x_pos; |
| int half_width = (win_info->generic.width - 2) / 2; |
| |
| if (win_info->generic.handle != (WINDOW *) NULL) |
| { |
| werase (win_info->generic.handle); |
| tui_check_and_display_highlight_if_needed (win_info); |
| if (display_prompt == EMPTY_SOURCE_PROMPT) |
| { |
| const char *no_src_str; |
| |
| if (win_info->generic.type == SRC_WIN) |
| no_src_str = NO_SRC_STRING; |
| else |
| no_src_str = NO_DISASSEM_STRING; |
| if (strlen (no_src_str) >= half_width) |
| x_pos = 1; |
| else |
| x_pos = half_width - strlen (no_src_str); |
| mvwaddstr (win_info->generic.handle, |
| (win_info->generic.height / 2), |
| x_pos, |
| (char *) no_src_str); |
| |
| /* elz: Added this function call to set the real contents of |
| the window to what is on the screen, so that later calls |
| to refresh, do display the correct stuff, and not the old |
| image. */ |
| |
| tui_set_source_content_nil (win_info, no_src_str); |
| } |
| tui_refresh_win (&win_info->generic); |
| } |
| } |
| |
| |
| /* Redraw the complete line of a source or disassembly window. */ |
| static void |
| tui_show_source_line (struct tui_win_info *win_info, int lineno) |
| { |
| struct tui_win_element *line; |
| int x; |
| |
| line = win_info->generic.content[lineno - 1]; |
| if (line->which_element.source.is_exec_point) |
| tui_set_reverse_mode (win_info->generic.handle, true); |
| |
| wmove (win_info->generic.handle, lineno, 1); |
| tui_puts (line->which_element.source.line, |
| win_info->generic.handle); |
| if (line->which_element.source.is_exec_point) |
| tui_set_reverse_mode (win_info->generic.handle, false); |
| |
| /* Clear to end of line but stop before the border. */ |
| x = getcurx (win_info->generic.handle); |
| while (x + 1 < win_info->generic.width) |
| { |
| waddch (win_info->generic.handle, ' '); |
| x = getcurx (win_info->generic.handle); |
| } |
| } |
| |
| void |
| tui_show_source_content (struct tui_win_info *win_info) |
| { |
| if (win_info->generic.content_size > 0) |
| { |
| int lineno; |
| |
| for (lineno = 1; lineno <= win_info->generic.content_size; lineno++) |
| tui_show_source_line (win_info, lineno); |
| } |
| else |
| tui_erase_source_content (win_info, TRUE); |
| |
| tui_check_and_display_highlight_if_needed (win_info); |
| tui_refresh_win (&win_info->generic); |
| win_info->generic.content_in_use = TRUE; |
| } |
| |
| /* Refill the source window's source cache and update it. If WIN_INFO |
| is a disassembly window, then just update it. */ |
| |
| void |
| tui_refill_source_window (struct tui_win_info *win_info) |
| { |
| symtab *s = nullptr; |
| |
| if (win_info->generic.type == SRC_WIN) |
| { |
| symtab_and_line cursal = get_current_source_symtab_and_line (); |
| s = (cursal.symtab == NULL |
| ? find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL))) |
| : cursal.symtab); |
| } |
| |
| tui_update_source_window_as_is (win_info, |
| win_info->detail.source_info.gdbarch, |
| s, |
| win_info->generic.content[0] |
| ->which_element.source.line_or_addr, |
| FALSE); |
| } |
| |
| /* Scroll the source forward or backward horizontally. */ |
| |
| void |
| tui_horizontal_source_scroll (struct tui_win_info *win_info, |
| enum tui_scroll_direction direction, |
| int num_to_scroll) |
| { |
| if (win_info->generic.content != NULL) |
| { |
| int offset; |
| |
| if (direction == LEFT_SCROLL) |
| offset = win_info->detail.source_info.horizontal_offset |
| + num_to_scroll; |
| else |
| { |
| offset = win_info->detail.source_info.horizontal_offset |
| - num_to_scroll; |
| if (offset < 0) |
| offset = 0; |
| } |
| win_info->detail.source_info.horizontal_offset = offset; |
| tui_refill_source_window (win_info); |
| } |
| } |
| |
| |
| /* Set or clear the has_break flag in the line whose line is |
| line_no. */ |
| |
| void |
| tui_set_is_exec_point_at (struct tui_line_or_address l, |
| struct tui_win_info *win_info) |
| { |
| int changed = 0; |
| int i; |
| tui_win_content content = win_info->generic.content; |
| |
| i = 0; |
| while (i < win_info->generic.content_size) |
| { |
| int new_state; |
| struct tui_line_or_address content_loa = |
| content[i]->which_element.source.line_or_addr; |
| |
| gdb_assert (l.loa == LOA_ADDRESS || l.loa == LOA_LINE); |
| gdb_assert (content_loa.loa == LOA_LINE |
| || content_loa.loa == LOA_ADDRESS); |
| if (content_loa.loa == l.loa |
| && ((l.loa == LOA_LINE && content_loa.u.line_no == l.u.line_no) |
| || (content_loa.u.addr == l.u.addr))) |
| new_state = TRUE; |
| else |
| new_state = FALSE; |
| if (new_state != content[i]->which_element.source.is_exec_point) |
| { |
| changed++; |
| content[i]->which_element.source.is_exec_point = new_state; |
| tui_show_source_line (win_info, i + 1); |
| } |
| i++; |
| } |
| if (changed) |
| tui_refill_source_window (win_info); |
| } |
| |
| /* 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 (void) |
| { |
| struct tui_list *list = tui_source_windows (); |
| int i; |
| |
| for (i = 0; i < list->count; i++) |
| { |
| struct tui_win_info *win = list->list[i]; |
| |
| if (tui_update_breakpoint_info (win, FALSE)) |
| { |
| tui_update_exec_info (win); |
| } |
| } |
| } |
| |
| |
| /* Scan the source window and the breakpoints to update the has_break |
| information for each line. |
| |
| Returns 1 if something changed and the execution window must be |
| refreshed. */ |
| |
| int |
| tui_update_breakpoint_info (struct tui_win_info *win, |
| int current_only) |
| { |
| int i; |
| int need_refresh = 0; |
| struct tui_source_info *src = &win->detail.source_info; |
| |
| for (i = 0; i < win->generic.content_size; i++) |
| { |
| struct breakpoint *bp; |
| extern struct breakpoint *breakpoint_chain; |
| int mode; |
| struct tui_source_element *line; |
| |
| line = &win->generic.content[i]->which_element.source; |
| if (current_only && !line->is_exec_point) |
| 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) |
| { |
| struct bp_location *loc; |
| |
| gdb_assert (line->line_or_addr.loa == LOA_LINE |
| || line->line_or_addr.loa == LOA_ADDRESS); |
| |
| for (loc = bp->loc; loc != NULL; loc = loc->next) |
| { |
| if ((win == TUI_SRC_WIN |
| && loc->symtab != NULL |
| && filename_cmp (src->fullname, |
| symtab_to_fullname (loc->symtab)) == 0 |
| && line->line_or_addr.loa == LOA_LINE |
| && loc->line_number == line->line_or_addr.u.line_no) |
| || (win == TUI_DISASM_WIN |
| && line->line_or_addr.loa == LOA_ADDRESS |
| && loc->address == line->line_or_addr.u.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->loc->cond) |
| mode |= TUI_BP_CONDITIONAL; |
| if (bp->type == bp_hardware_breakpoint) |
| mode |= TUI_BP_HARDWARE; |
| } |
| } |
| } |
| if (line->has_break != mode) |
| { |
| line->has_break = mode; |
| need_refresh = 1; |
| } |
| } |
| return need_refresh; |
| } |
| |
| |
| /* Function to initialize the content of the execution info window, |
| based upon the input window which is either the source or |
| disassembly window. */ |
| enum tui_status |
| tui_set_exec_info_content (struct tui_win_info *win_info) |
| { |
| enum tui_status ret = TUI_SUCCESS; |
| |
| if (win_info->detail.source_info.execution_info |
| != (struct tui_gen_win_info *) NULL) |
| { |
| struct tui_gen_win_info *exec_info_ptr |
| = win_info->detail.source_info.execution_info; |
| |
| if (exec_info_ptr->content == NULL) |
| exec_info_ptr->content = |
| tui_alloc_content (win_info->generic.height, exec_info_ptr->type); |
| if (exec_info_ptr->content != NULL) |
| { |
| int i; |
| |
| tui_update_breakpoint_info (win_info, 1); |
| for (i = 0; i < win_info->generic.content_size; i++) |
| { |
| struct tui_win_element *element; |
| struct tui_win_element *src_element; |
| int mode; |
| |
| element = exec_info_ptr->content[i]; |
| src_element = win_info->generic.content[i]; |
| |
| memset(element->which_element.simple_string, ' ', |
| sizeof(element->which_element.simple_string)); |
| element->which_element.simple_string[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 = src_element->which_element.source.has_break; |
| if (mode & TUI_BP_HIT) |
| element->which_element.simple_string[TUI_BP_HIT_POS] = |
| (mode & TUI_BP_HARDWARE) ? 'H' : 'B'; |
| else if (mode & (TUI_BP_ENABLED | TUI_BP_DISABLED)) |
| element->which_element.simple_string[TUI_BP_HIT_POS] = |
| (mode & TUI_BP_HARDWARE) ? 'h' : 'b'; |
| |
| if (mode & TUI_BP_ENABLED) |
| element->which_element.simple_string[TUI_BP_BREAK_POS] = '+'; |
| else if (mode & TUI_BP_DISABLED) |
| element->which_element.simple_string[TUI_BP_BREAK_POS] = '-'; |
| |
| if (src_element->which_element.source.is_exec_point) |
| element->which_element.simple_string[TUI_EXEC_POS] = '>'; |
| } |
| exec_info_ptr->content_size = win_info->generic.content_size; |
| } |
| else |
| ret = TUI_FAILURE; |
| } |
| |
| return ret; |
| } |
| |
| |
| void |
| tui_show_exec_info_content (struct tui_win_info *win_info) |
| { |
| struct tui_gen_win_info *exec_info |
| = win_info->detail.source_info.execution_info; |
| int cur_line; |
| |
| werase (exec_info->handle); |
| tui_refresh_win (exec_info); |
| for (cur_line = 1; (cur_line <= exec_info->content_size); cur_line++) |
| mvwaddstr (exec_info->handle, |
| cur_line, |
| 0, |
| (char *) exec_info->content[cur_line - 1] |
| ->which_element.simple_string); |
| tui_refresh_win (exec_info); |
| exec_info->content_in_use = TRUE; |
| } |
| |
| |
| void |
| tui_erase_exec_info_content (struct tui_win_info *win_info) |
| { |
| struct tui_gen_win_info *exec_info |
| = win_info->detail.source_info.execution_info; |
| |
| werase (exec_info->handle); |
| tui_refresh_win (exec_info); |
| } |
| |
| void |
| tui_clear_exec_info_content (struct tui_win_info *win_info) |
| { |
| win_info->detail.source_info.execution_info->content_in_use = FALSE; |
| tui_erase_exec_info_content (win_info); |
| |
| return; |
| } |
| |
| /* Function to update the execution info window. */ |
| void |
| tui_update_exec_info (struct tui_win_info *win_info) |
| { |
| tui_set_exec_info_content (win_info); |
| tui_show_exec_info_content (win_info); |
| } |
| |
| enum tui_status |
| tui_alloc_source_buffer (struct tui_win_info *win_info) |
| { |
| int i, line_width, max_lines; |
| |
| /* The window width/height includes the highlight box. Determine actual |
| content dimensions, including string null-terminators. */ |
| max_lines = win_info->generic.height - 2; |
| line_width = win_info->generic.width - 2 + 1; |
| |
| /* Allocate the buffer for the source lines. */ |
| if (win_info->generic.content == NULL) |
| { |
| /* Allocate the content list. */ |
| win_info->generic.content = tui_alloc_content (max_lines, SRC_WIN); |
| for (i = 0; i < max_lines; i++) |
| win_info->generic.content[i]->which_element.source.line |
| = (char *) xmalloc (line_width); |
| } |
| |
| return TUI_SUCCESS; |
| } |
| |
| |
| /* Answer whether a particular line number or address is displayed |
| in the current source window. */ |
| int |
| tui_line_is_displayed (int line, |
| struct tui_win_info *win_info, |
| int check_threshold) |
| { |
| int is_displayed = FALSE; |
| int i, threshold; |
| |
| if (check_threshold) |
| threshold = SCROLL_THRESHOLD; |
| else |
| threshold = 0; |
| i = 0; |
| while (i < win_info->generic.content_size - threshold |
| && !is_displayed) |
| { |
| is_displayed |
| = win_info->generic.content[i] |
| ->which_element.source.line_or_addr.loa == LOA_LINE |
| && win_info->generic.content[i] |
| ->which_element.source.line_or_addr.u.line_no == line; |
| i++; |
| } |
| |
| return is_displayed; |
| } |
| |
| |
| /* Answer whether a particular line number or address is displayed |
| in the current source window. */ |
| int |
| tui_addr_is_displayed (CORE_ADDR addr, |
| struct tui_win_info *win_info, |
| int check_threshold) |
| { |
| int is_displayed = FALSE; |
| int i, threshold; |
| |
| if (check_threshold) |
| threshold = SCROLL_THRESHOLD; |
| else |
| threshold = 0; |
| i = 0; |
| while (i < win_info->generic.content_size - threshold |
| && !is_displayed) |
| { |
| is_displayed |
| = win_info->generic.content[i] |
| ->which_element.source.line_or_addr.loa == LOA_ADDRESS |
| && win_info->generic.content[i] |
| ->which_element.source.line_or_addr.u.addr == addr; |
| i++; |
| } |
| |
| return is_displayed; |
| } |
| |
| |
| /***************************************** |
| ** STATIC LOCAL FUNCTIONS ** |
| ******************************************/ |