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f377b406 | 1 | /* TUI display source window. |
f33c6cbf | 2 | |
b811d2c2 | 3 | Copyright (C) 1998-2020 Free Software Foundation, Inc. |
f33c6cbf | 4 | |
f377b406 SC |
5 | Contributed by Hewlett-Packard Company. |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
f377b406 SC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
d1da6b01 | 23 | #include <math.h> |
c906108c SS |
24 | #include <ctype.h> |
25 | #include "symtab.h" | |
26 | #include "frame.h" | |
27 | #include "breakpoint.h" | |
c2c6d25f | 28 | #include "source.h" |
13274fc3 | 29 | #include "objfiles.h" |
a7417d46 | 30 | #include "filenames.h" |
62f29fda | 31 | #include "source-cache.h" |
c906108c | 32 | |
d7b2e967 AC |
33 | #include "tui/tui.h" |
34 | #include "tui/tui-data.h" | |
62f29fda | 35 | #include "tui/tui-io.h" |
d7b2e967 | 36 | #include "tui/tui-stack.h" |
d1da6b01 | 37 | #include "tui/tui-win.h" |
d7b2e967 AC |
38 | #include "tui/tui-winsource.h" |
39 | #include "tui/tui-source.h" | |
6a83354a | 40 | #include "gdb_curses.h" |
c906108c | 41 | |
98427f35 | 42 | /* Function to display source in the source window. */ |
61c33f10 | 43 | bool |
81c82c4b | 44 | tui_source_window::set_contents (struct gdbarch *arch, |
9f7540a5 | 45 | const struct symtab_and_line &sal) |
c906108c | 46 | { |
9f7540a5 TT |
47 | struct symtab *s = sal.symtab; |
48 | int line_no = sal.line; | |
81c82c4b | 49 | |
61c33f10 TT |
50 | if (s == NULL) |
51 | return false; | |
52 | ||
53 | int line_width, nlines; | |
54 | ||
55 | line_width = width - TUI_EXECINFO_SIZE - 1; | |
56 | /* Take hilite (window border) into account, when | |
57 | calculating the number of lines. */ | |
1d5d29e7 | 58 | nlines = height - 2; |
61c33f10 TT |
59 | |
60 | std::string srclines; | |
61 | const std::vector<off_t> *offsets; | |
62 | if (!g_source_cache.get_source_lines (s, line_no, line_no + nlines, | |
63 | &srclines) | |
64 | || !g_source_cache.get_line_charpos (s, &offsets)) | |
65 | return false; | |
66 | ||
67 | int cur_line_no, cur_line; | |
68 | struct tui_locator_window *locator | |
69 | = tui_locator_win_info_ptr (); | |
70 | const char *s_filename = symtab_to_filename_for_display (s); | |
71 | ||
72 | title = s_filename; | |
c906108c | 73 | |
61c33f10 TT |
74 | m_fullname = make_unique_xstrdup (symtab_to_fullname (s)); |
75 | ||
76 | cur_line = 0; | |
432b5c40 TT |
77 | m_gdbarch = get_objfile_arch (SYMTAB_OBJFILE (s)); |
78 | m_start_line_or_addr.loa = LOA_LINE; | |
79 | cur_line_no = m_start_line_or_addr.u.line_no = line_no; | |
61c33f10 TT |
80 | |
81 | int digits = 0; | |
82 | if (compact_source) | |
83 | { | |
84 | /* Solaris 11+gcc 5.5 has ambiguous overloads of log10, so we | |
85 | cast to double to get the right one. */ | |
86 | double l = log10 ((double) offsets->size ()); | |
87 | digits = 1 + (int) l; | |
88 | } | |
89 | ||
90 | const char *iter = srclines.c_str (); | |
432b5c40 | 91 | m_content.resize (nlines); |
61c33f10 | 92 | while (cur_line < nlines) |
c906108c | 93 | { |
432b5c40 | 94 | struct tui_source_element *element = &m_content[cur_line]; |
61c33f10 TT |
95 | |
96 | std::string text; | |
97 | if (*iter != '\0') | |
98 | text = tui_copy_source_line (&iter, cur_line_no, | |
432b5c40 | 99 | m_horizontal_offset, |
61c33f10 TT |
100 | line_width, digits); |
101 | ||
102 | /* Set whether element is the execution point | |
103 | and whether there is a break point on it. */ | |
104 | element->line_or_addr.loa = LOA_LINE; | |
105 | element->line_or_addr.u.line_no = cur_line_no; | |
106 | element->is_exec_point | |
107 | = (filename_cmp (locator->full_name.c_str (), | |
108 | symtab_to_fullname (s)) == 0 | |
109 | && cur_line_no == locator->line_no); | |
110 | ||
432b5c40 | 111 | m_content[cur_line].line = std::move (text); |
61c33f10 TT |
112 | |
113 | cur_line++; | |
114 | cur_line_no++; | |
c906108c | 115 | } |
61c33f10 TT |
116 | |
117 | return true; | |
98427f35 | 118 | } |
c906108c SS |
119 | |
120 | ||
a358af15 AC |
121 | /* Answer whether the source is currently displayed in the source |
122 | window. */ | |
a38da35d TT |
123 | bool |
124 | tui_source_window::showing_source_p (const char *fullname) const | |
c906108c | 125 | { |
432b5c40 | 126 | return (!m_content.empty () |
9923f347 | 127 | && (filename_cmp (tui_locator_win_info_ptr ()->full_name.c_str (), |
56d397a3 | 128 | fullname) == 0)); |
98427f35 | 129 | } |
c906108c SS |
130 | |
131 | ||
98427f35 | 132 | /* Scroll the source forward or backward vertically. */ |
c906108c | 133 | void |
c3bd716f | 134 | tui_source_window::do_scroll_vertical (int num_to_scroll) |
c906108c | 135 | { |
432b5c40 | 136 | if (!m_content.empty ()) |
c906108c | 137 | { |
c906108c | 138 | struct symtab *s; |
52575520 | 139 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
432b5c40 | 140 | struct gdbarch *arch = m_gdbarch; |
c906108c | 141 | |
cafb3438 | 142 | if (cursal.symtab == NULL) |
9ae6bf64 TT |
143 | { |
144 | struct frame_info *fi = get_selected_frame (NULL); | |
145 | s = find_pc_line_symtab (get_frame_pc (fi)); | |
146 | arch = get_frame_arch (fi); | |
147 | } | |
c906108c | 148 | else |
52575520 | 149 | s = cursal.symtab; |
c906108c | 150 | |
432b5c40 | 151 | int line_no = m_start_line_or_addr.u.line_no + num_to_scroll; |
cb44333d TT |
152 | const std::vector<off_t> *offsets; |
153 | if (g_source_cache.get_line_charpos (s, &offsets) | |
9ae6bf64 | 154 | && line_no > offsets->size ()) |
432b5c40 | 155 | line_no = m_start_line_or_addr.u.line_no; |
9ae6bf64 TT |
156 | if (line_no <= 0) |
157 | line_no = 1; | |
27229e99 | 158 | |
9ae6bf64 | 159 | cursal.line = line_no; |
f5a7c406 AB |
160 | find_line_pc (cursal.symtab, cursal.line, &cursal.pc); |
161 | for (struct tui_source_window_base *win_info : tui_source_windows ()) | |
162 | win_info->update_source_window_as_is (arch, cursal); | |
c906108c | 163 | } |
98427f35 | 164 | } |
b73dd877 | 165 | |
c2cd8994 TT |
166 | bool |
167 | tui_source_window::location_matches_p (struct bp_location *loc, int line_no) | |
168 | { | |
432b5c40 TT |
169 | return (m_content[line_no].line_or_addr.loa == LOA_LINE |
170 | && m_content[line_no].line_or_addr.u.line_no == loc->line_number | |
c2cd8994 | 171 | && loc->symtab != NULL |
7226433c | 172 | && filename_cmp (m_fullname.get (), |
c2cd8994 TT |
173 | symtab_to_fullname (loc->symtab)) == 0); |
174 | } | |
a54700c6 | 175 | |
c9033fe8 TT |
176 | /* See tui-source.h. */ |
177 | ||
178 | bool | |
179 | tui_source_window::line_is_displayed (int line) const | |
180 | { | |
432b5c40 | 181 | if (m_content.size () < SCROLL_THRESHOLD) |
cbfa8581 SV |
182 | return false; |
183 | ||
432b5c40 | 184 | for (size_t i = 0; i < m_content.size () - SCROLL_THRESHOLD; ++i) |
c9033fe8 | 185 | { |
432b5c40 TT |
186 | if (m_content[i].line_or_addr.loa == LOA_LINE |
187 | && m_content[i].line_or_addr.u.line_no == line) | |
cbfa8581 | 188 | return true; |
c9033fe8 TT |
189 | } |
190 | ||
cbfa8581 | 191 | return false; |
c9033fe8 TT |
192 | } |
193 | ||
a54700c6 | 194 | void |
1ae58f0c | 195 | tui_source_window::maybe_update (struct frame_info *fi, symtab_and_line sal) |
a54700c6 | 196 | { |
1630140d | 197 | int start_line = (sal.line - ((height - 2) / 2)) + 1; |
a54700c6 TT |
198 | if (start_line <= 0) |
199 | start_line = 1; | |
200 | ||
201 | bool source_already_displayed = (sal.symtab != 0 | |
7226433c | 202 | && showing_source_p (m_fullname.get ())); |
a54700c6 | 203 | |
1ae58f0c | 204 | if (!(source_already_displayed && line_is_displayed (sal.line))) |
9f7540a5 TT |
205 | { |
206 | sal.line = start_line; | |
207 | update_source_window (get_frame_arch (fi), sal); | |
208 | } | |
a54700c6 TT |
209 | else |
210 | { | |
9f7540a5 TT |
211 | struct tui_line_or_address l; |
212 | ||
213 | l.loa = LOA_LINE; | |
1ae58f0c | 214 | l.u.line_no = sal.line; |
a54700c6 TT |
215 | set_is_exec_point_at (l); |
216 | } | |
217 | } | |
432b5c40 TT |
218 | |
219 | void | |
220 | tui_source_window::display_start_addr (struct gdbarch **gdbarch_p, | |
221 | CORE_ADDR *addr_p) | |
222 | { | |
223 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); | |
224 | ||
225 | *gdbarch_p = m_gdbarch; | |
226 | find_line_pc (cursal.symtab, m_start_line_or_addr.u.line_no, addr_p); | |
227 | } |