| /* TUI display source/assembly window. |
| |
| Copyright (C) 1998-2021 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 "safe-ctype.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 "tui/tui-location.h" |
| #include "gdb_curses.h" |
| |
| /* Function to display the "main" routine. */ |
| void |
| tui_display_main () |
| { |
| auto adapter = tui_source_windows (); |
| if (adapter.begin () != adapter.end ()) |
| { |
| 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); |
| tui_location.set_location (s); |
| } |
| } |
| } |
| |
| /* See tui-winsource.h. */ |
| |
| std::string |
| tui_copy_source_line (const char **ptr, int *length) |
| { |
| const char *lineptr = *ptr; |
| |
| /* Init the line with the line number. */ |
| std::string result; |
| |
| int column = 0; |
| char c; |
| do |
| { |
| int skip_bytes; |
| |
| c = *lineptr; |
| if (c == '\033' && skip_ansi_escape (lineptr, &skip_bytes)) |
| { |
| /* We always have to preserve escapes. */ |
| result.append (lineptr, lineptr + skip_bytes); |
| lineptr += skip_bytes; |
| continue; |
| } |
| if (c == '\0') |
| break; |
| |
| ++lineptr; |
| ++column; |
| |
| auto process_tab = [&] () |
| { |
| int max_tab_len = tui_tab_width; |
| |
| --column; |
| for (int j = column % max_tab_len; |
| j < max_tab_len; |
| column++, j++) |
| result.push_back (' '); |
| }; |
| |
| if (c == '\n' || c == '\r' || c == '\0') |
| { |
| /* Nothing. */ |
| } |
| else if (c == '\t') |
| process_tab (); |
| else if (ISCNTRL (c)) |
| { |
| result.push_back ('^'); |
| result.push_back (c + 0100); |
| ++column; |
| } |
| else if (c == 0177) |
| { |
| result.push_back ('^'); |
| result.push_back ('?'); |
| ++column; |
| } |
| else |
| result.push_back (c); |
| } |
| while (c != '\0' && c != '\n' && c != '\r'); |
| |
| if (c == '\r' && *lineptr == '\n') |
| ++lineptr; |
| *ptr = lineptr; |
| |
| if (length != nullptr) |
| *length = column; |
| |
| return result; |
| } |
| |
| void |
| tui_source_window_base::style_changed () |
| { |
| if (tui_active && is_visible ()) |
| refill (); |
| } |
| |
| /* Function to display source in the source window. This function |
| initializes the horizontal scroll to 0. */ |
| void |
| tui_source_window_base::update_source_window |
| (struct gdbarch *gdbarch, |
| const struct symtab_and_line &sal) |
| { |
| m_horizontal_offset = 0; |
| update_source_window_as_is (gdbarch, sal); |
| } |
| |
| |
| /* Function to display source in the source/asm window. This function |
| shows the source as specified by the horizontal offset. */ |
| void |
| tui_source_window_base::update_source_window_as_is |
| (struct gdbarch *gdbarch, |
| const struct symtab_and_line &sal) |
| { |
| bool ret = set_contents (gdbarch, sal); |
| |
| if (!ret) |
| erase_source_content (); |
| else |
| { |
| update_breakpoint_info (nullptr, false); |
| show_source_content (); |
| update_exec_info (); |
| } |
| } |
| |
| |
| /* 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) |
| { |
| struct symtab_and_line sal {}; |
| if (addr != 0) |
| sal = find_pc_line (addr, 0); |
| |
| for (struct tui_source_window_base *win_info : tui_source_windows ()) |
| win_info->update_source_window (gdbarch, sal); |
| } |
| |
| /* Function to ensure that the source and/or disassembly windows |
| reflect the symtab and line. */ |
| void |
| tui_update_source_windows_with_line (struct symtab_and_line sal) |
| { |
| struct gdbarch *gdbarch = nullptr; |
| if (sal.symtab != nullptr) |
| { |
| find_line_pc (sal.symtab, sal.line, &sal.pc); |
| gdbarch = SYMTAB_OBJFILE (sal.symtab)->arch (); |
| } |
| |
| for (struct tui_source_window_base *win_info : tui_source_windows ()) |
| win_info->update_source_window (gdbarch, sal); |
| } |
| |
| void |
| tui_source_window_base::do_erase_source_content (const char *str) |
| { |
| int x_pos; |
| int half_width = (width - 2) / 2; |
| |
| m_content.clear (); |
| if (handle != NULL) |
| { |
| werase (handle.get ()); |
| check_and_display_highlight_if_needed (); |
| |
| if (strlen (str) >= half_width) |
| x_pos = 1; |
| else |
| x_pos = half_width - strlen (str); |
| mvwaddstr (handle.get (), |
| (height / 2), |
| x_pos, |
| (char *) str); |
| |
| refresh_window (); |
| } |
| } |
| |
| |
| /* Redraw the complete line of a source or disassembly window. */ |
| void |
| tui_source_window_base::show_source_line (int lineno) |
| { |
| struct tui_source_element *line; |
| |
| line = &m_content[lineno]; |
| if (line->is_exec_point) |
| tui_set_reverse_mode (m_pad.get (), true); |
| |
| wmove (m_pad.get (), lineno, 0); |
| tui_puts (line->line.c_str (), m_pad.get ()); |
| if (line->is_exec_point) |
| tui_set_reverse_mode (m_pad.get (), false); |
| } |
| |
| /* See tui-winsource.h. */ |
| |
| void |
| tui_source_window_base::refresh_window () |
| { |
| /* tui_win_info::refresh_window would draw the empty background window to |
| the screen, potentially creating a flicker. */ |
| wnoutrefresh (handle.get ()); |
| |
| int pad_width = std::max (m_max_length, width); |
| int left_margin = 1 + TUI_EXECINFO_SIZE + extra_margin (); |
| int view_width = width - left_margin - 1; |
| int pad_x = std::min (pad_width - view_width, m_horizontal_offset); |
| /* Ensure that an equal number of scrolls will work if the user |
| scrolled beyond where we clip. */ |
| m_horizontal_offset = pad_x; |
| prefresh (m_pad.get (), 0, pad_x, y + 1, x + left_margin, |
| y + m_content.size (), x + left_margin + view_width - 1); |
| } |
| |
| void |
| tui_source_window_base::show_source_content () |
| { |
| gdb_assert (!m_content.empty ()); |
| |
| check_and_display_highlight_if_needed (); |
| |
| int pad_width = std::max (m_max_length, width); |
| if (m_pad == nullptr || pad_width > getmaxx (m_pad.get ()) |
| || m_content.size () > getmaxy (m_pad.get ())) |
| m_pad.reset (newpad (m_content.size (), pad_width)); |
| |
| werase (m_pad.get ()); |
| for (int lineno = 0; lineno < m_content.size (); lineno++) |
| show_source_line (lineno); |
| |
| refresh_window (); |
| } |
| |
| tui_source_window_base::tui_source_window_base () |
| { |
| m_start_line_or_addr.loa = LOA_ADDRESS; |
| m_start_line_or_addr.u.addr = 0; |
| |
| gdb::observers::source_styling_changed.attach |
| (std::bind (&tui_source_window::style_changed, this), |
| m_observable, "tui-winsource"); |
| } |
| |
| tui_source_window_base::~tui_source_window_base () |
| { |
| gdb::observers::source_styling_changed.detach (m_observable); |
| } |
| |
| /* See tui-data.h. */ |
| |
| void |
| tui_source_window_base::update_tab_width () |
| { |
| werase (handle.get ()); |
| rerender (); |
| } |
| |
| void |
| tui_source_window_base::rerender () |
| { |
| if (!m_content.empty ()) |
| { |
| struct symtab_and_line cursal |
| = get_current_source_symtab_and_line (); |
| |
| if (m_start_line_or_addr.loa == LOA_LINE) |
| cursal.line = m_start_line_or_addr.u.line_no; |
| else |
| cursal.pc = m_start_line_or_addr.u.addr; |
| update_source_window (m_gdbarch, cursal); |
| } |
| else if (deprecated_safe_get_selected_frame () != NULL) |
| { |
| struct symtab_and_line cursal |
| = get_current_source_symtab_and_line (); |
| struct frame_info *frame = deprecated_safe_get_selected_frame (); |
| struct gdbarch *gdbarch = get_frame_arch (frame); |
| |
| struct symtab *s = find_pc_line_symtab (get_frame_pc (frame)); |
| if (this != TUI_SRC_WIN) |
| find_line_pc (s, cursal.line, &cursal.pc); |
| update_source_window (gdbarch, cursal); |
| } |
| else |
| erase_source_content (); |
| } |
| |
| /* See tui-data.h. */ |
| |
| void |
| tui_source_window_base::refill () |
| { |
| symtab_and_line sal {}; |
| |
| if (this == TUI_SRC_WIN) |
| { |
| sal = get_current_source_symtab_and_line (); |
| if (sal.symtab == NULL) |
| { |
| struct frame_info *fi = deprecated_safe_get_selected_frame (); |
| if (fi != nullptr) |
| sal = find_pc_line (get_frame_pc (fi), 0); |
| } |
| } |
| |
| if (sal.pspace == nullptr) |
| sal.pspace = current_program_space; |
| |
| if (m_start_line_or_addr.loa == LOA_LINE) |
| sal.line = m_start_line_or_addr.u.line_no; |
| else |
| sal.pc = m_start_line_or_addr.u.addr; |
| |
| update_source_window_as_is (m_gdbarch, sal); |
| } |
| |
| /* Scroll the source forward or backward horizontally. */ |
| |
| void |
| tui_source_window_base::do_scroll_horizontal (int num_to_scroll) |
| { |
| if (!m_content.empty ()) |
| { |
| int offset = m_horizontal_offset + num_to_scroll; |
| if (offset < 0) |
| offset = 0; |
| m_horizontal_offset = offset; |
| refresh_window (); |
| } |
| } |
| |
| |
| /* Set or clear the is_exec_point flag in the line whose line is |
| line_no. */ |
| |
| void |
| tui_source_window_base::set_is_exec_point_at (struct tui_line_or_address l) |
| { |
| bool changed = false; |
| int i; |
| |
| i = 0; |
| while (i < m_content.size ()) |
| { |
| bool new_state; |
| struct tui_line_or_address content_loa = |
| m_content[i].line_or_addr; |
| |
| if (content_loa.loa == l.loa |
| && ((l.loa == LOA_LINE && content_loa.u.line_no == l.u.line_no) |
| || (l.loa == LOA_ADDRESS && content_loa.u.addr == l.u.addr))) |
| new_state = true; |
| else |
| new_state = false; |
| if (new_state != m_content[i].is_exec_point) |
| { |
| changed = true; |
| m_content[i].is_exec_point = new_state; |
| } |
| i++; |
| } |
| if (changed) |
| refill (); |
| } |
| |
| /* See tui-winsource.h. */ |
| |
| void |
| tui_update_all_breakpoint_info (struct breakpoint *being_deleted) |
| { |
| for (tui_source_window_base *win : tui_source_windows ()) |
| { |
| if (win->update_breakpoint_info (being_deleted, false)) |
| win->update_exec_info (); |
| } |
| } |
| |
| |
| /* Scan the source window and the breakpoints to update the break_mode |
| information for each line. |
| |
| Returns true if something changed and the execution window must be |
| refreshed. */ |
| |
| bool |
| tui_source_window_base::update_breakpoint_info |
| (struct breakpoint *being_deleted, bool current_only) |
| { |
| int i; |
| bool need_refresh = false; |
| |
| for (i = 0; i < m_content.size (); i++) |
| { |
| struct tui_source_element *line; |
| |
| line = &m_content[i]; |
| 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. */ |
| tui_bp_flags mode = 0; |
| for (breakpoint *bp : all_breakpoints ()) |
| { |
| if (bp == being_deleted) |
| return false; |
| |
| for (bp_location *loc : bp->locations ()) |
| { |
| if (location_matches_p (loc, i)) |
| { |
| 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; |
| } |
| } |
| return false; |
| } |
| |
| if (line->break_mode != mode) |
| { |
| line->break_mode = mode; |
| need_refresh = true; |
| } |
| } |
| 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. */ |
| void |
| tui_source_window_base::update_exec_info () |
| { |
| update_breakpoint_info (nullptr, true); |
| for (int i = 0; i < m_content.size (); i++) |
| { |
| struct tui_source_element *src_element = &m_content[i]; |
| char element[TUI_EXECINFO_SIZE] = " "; |
| |
| /* Now update the exec info content based upon the state |
| of each line as indicated by the source content. */ |
| tui_bp_flags mode = src_element->break_mode; |
| if (mode & TUI_BP_HIT) |
| element[TUI_BP_HIT_POS] = (mode & TUI_BP_HARDWARE) ? 'H' : 'B'; |
| else if (mode & (TUI_BP_ENABLED | TUI_BP_DISABLED)) |
| element[TUI_BP_HIT_POS] = (mode & TUI_BP_HARDWARE) ? 'h' : 'b'; |
| |
| if (mode & TUI_BP_ENABLED) |
| element[TUI_BP_BREAK_POS] = '+'; |
| else if (mode & TUI_BP_DISABLED) |
| element[TUI_BP_BREAK_POS] = '-'; |
| |
| if (src_element->is_exec_point) |
| element[TUI_EXEC_POS] = '>'; |
| |
| mvwaddstr (handle.get (), i + 1, 1, element); |
| |
| show_line_number (i); |
| } |
| refresh_window (); |
| } |