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Commit | Line | Data |
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f377b406 | 1 | /* Disassembly display. |
f33c6cbf | 2 | |
1d506c26 | 3 | Copyright (C) 1998-2024 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 | 21 | |
957b8b5a | 22 | #include "arch-utils.h" |
c906108c SS |
23 | #include "symtab.h" |
24 | #include "breakpoint.h" | |
25 | #include "frame.h" | |
fd0407d6 | 26 | #include "value.h" |
52575520 | 27 | #include "source.h" |
f70a7d61 | 28 | #include "disasm.h" |
d7b2e967 | 29 | #include "tui/tui.h" |
6d7fd9aa | 30 | #include "tui/tui-command.h" |
d7b2e967 AC |
31 | #include "tui/tui-data.h" |
32 | #include "tui/tui-win.h" | |
33 | #include "tui/tui-layout.h" | |
34 | #include "tui/tui-winsource.h" | |
cf2ef009 | 35 | #include "tui/tui-status.h" |
d7b2e967 | 36 | #include "tui/tui-file.h" |
2c0b251b | 37 | #include "tui/tui-disasm.h" |
bfad4537 | 38 | #include "tui/tui-source.h" |
6c95b8df | 39 | #include "progspace.h" |
77e371c0 | 40 | #include "objfiles.h" |
1df2f9ef | 41 | #include "cli/cli-style.h" |
f237f998 | 42 | #include "tui/tui-location.h" |
72535eb1 TV |
43 | #include "gdbsupport/selftest.h" |
44 | #include "inferior.h" | |
c906108c | 45 | |
6a83354a | 46 | #include "gdb_curses.h" |
96ec9981 | 47 | |
a61b4f69 | 48 | struct tui_asm_line |
aec2f747 SC |
49 | { |
50 | CORE_ADDR addr; | |
6b915f7d | 51 | std::string addr_string; |
825165c5 | 52 | size_t addr_size; |
6b915f7d | 53 | std::string insn; |
aec2f747 SC |
54 | }; |
55 | ||
1df2f9ef TT |
56 | /* Helper function to find the number of characters in STR, skipping |
57 | any ANSI escape sequences. */ | |
58 | static size_t | |
59 | len_without_escapes (const std::string &str) | |
60 | { | |
61 | size_t len = 0; | |
62 | const char *ptr = str.c_str (); | |
63 | char c; | |
64 | ||
d811a7cf | 65 | while ((c = *ptr) != '\0') |
1df2f9ef TT |
66 | { |
67 | if (c == '\033') | |
68 | { | |
69 | ui_file_style style; | |
70 | size_t n_read; | |
71 | if (style.parse (ptr, &n_read)) | |
72 | ptr += n_read; | |
73 | else | |
74 | { | |
75 | /* Shouldn't happen, but just skip the ESC if it somehow | |
76 | does. */ | |
77 | ++ptr; | |
78 | } | |
79 | } | |
80 | else | |
d811a7cf TV |
81 | { |
82 | ++len; | |
83 | ++ptr; | |
84 | } | |
1df2f9ef TT |
85 | } |
86 | return len; | |
87 | } | |
88 | ||
733d0a67 AB |
89 | /* Function to disassemble up to COUNT instructions starting from address |
90 | PC into the ASM_LINES vector (which will be emptied of any previous | |
91 | contents). Return the address of the COUNT'th instruction after pc. | |
92 | When ADDR_SIZE is non-null then place the maximum size of an address and | |
93 | label into the value pointed to by ADDR_SIZE, and set the addr_size | |
94 | field on each item in ASM_LINES, otherwise the addr_size fields within | |
95 | ASM_LINES are undefined. | |
96 | ||
97 | It is worth noting that ASM_LINES might not have COUNT entries when this | |
98 | function returns. If the disassembly is truncated for some other | |
99 | reason, for example, we hit invalid memory, then ASM_LINES can have | |
100 | fewer entries than requested. */ | |
aec2f747 | 101 | static CORE_ADDR |
6b915f7d TT |
102 | tui_disassemble (struct gdbarch *gdbarch, |
103 | std::vector<tui_asm_line> &asm_lines, | |
733d0a67 | 104 | CORE_ADDR pc, int count, |
1df2f9ef | 105 | size_t *addr_size = nullptr) |
aec2f747 | 106 | { |
1df2f9ef TT |
107 | bool term_out = source_styling && gdb_stdout->can_emit_style_escape (); |
108 | string_file gdb_dis_out (term_out); | |
aec2f747 | 109 | |
733d0a67 AB |
110 | /* Must start with an empty list. */ |
111 | asm_lines.clear (); | |
112 | ||
1cc6d956 | 113 | /* Now construct each line. */ |
6b915f7d | 114 | for (int i = 0; i < count; ++i) |
aec2f747 | 115 | { |
733d0a67 AB |
116 | tui_asm_line tal; |
117 | CORE_ADDR orig_pc = pc; | |
aec2f747 | 118 | |
733d0a67 AB |
119 | try |
120 | { | |
121 | pc = pc + gdb_print_insn (gdbarch, pc, &gdb_dis_out, NULL); | |
122 | } | |
123 | catch (const gdb_exception_error &except) | |
124 | { | |
125 | /* If PC points to an invalid address then we'll catch a | |
126 | MEMORY_ERROR here, this should stop the disassembly, but | |
127 | otherwise is fine. */ | |
128 | if (except.error != MEMORY_ERROR) | |
129 | throw; | |
130 | return pc; | |
131 | } | |
132 | ||
133 | /* Capture the disassembled instruction. */ | |
5d10a204 | 134 | tal.insn = gdb_dis_out.release (); |
733d0a67 AB |
135 | |
136 | /* And capture the address the instruction is at. */ | |
137 | tal.addr = orig_pc; | |
138 | print_address (gdbarch, orig_pc, &gdb_dis_out); | |
12735d34 | 139 | tal.addr_string = gdb_dis_out.release (); |
aec2f747 | 140 | |
1df2f9ef TT |
141 | if (addr_size != nullptr) |
142 | { | |
143 | size_t new_size; | |
144 | ||
145 | if (term_out) | |
733d0a67 | 146 | new_size = len_without_escapes (tal.addr_string); |
1df2f9ef | 147 | else |
733d0a67 | 148 | new_size = tal.addr_string.size (); |
1df2f9ef | 149 | *addr_size = std::max (*addr_size, new_size); |
733d0a67 | 150 | tal.addr_size = new_size; |
1df2f9ef TT |
151 | } |
152 | ||
733d0a67 | 153 | asm_lines.push_back (std::move (tal)); |
aec2f747 | 154 | } |
aec2f747 SC |
155 | return pc; |
156 | } | |
157 | ||
733d0a67 AB |
158 | /* Look backward from ADDR for an address from which we can start |
159 | disassembling, this needs to be something we can be reasonably | |
160 | confident will fall on an instruction boundary. We use msymbol | |
161 | addresses, or the start of a section. */ | |
162 | ||
163 | static CORE_ADDR | |
164 | tui_find_backward_disassembly_start_address (CORE_ADDR addr) | |
165 | { | |
166 | struct bound_minimal_symbol msym, msym_prev; | |
167 | ||
168 | msym = lookup_minimal_symbol_by_pc_section (addr - 1, nullptr, | |
169 | lookup_msym_prefer::TEXT, | |
170 | &msym_prev); | |
171 | if (msym.minsym != nullptr) | |
4aeddc50 | 172 | return msym.value_address (); |
733d0a67 | 173 | else if (msym_prev.minsym != nullptr) |
4aeddc50 | 174 | return msym_prev.value_address (); |
733d0a67 AB |
175 | |
176 | /* Find the section that ADDR is in, and look for the start of the | |
177 | section. */ | |
178 | struct obj_section *section = find_pc_section (addr); | |
179 | if (section != NULL) | |
0c1bcd23 | 180 | return section->addr (); |
733d0a67 AB |
181 | |
182 | return addr; | |
183 | } | |
184 | ||
1cc6d956 MS |
185 | /* Find the disassembly address that corresponds to FROM lines above |
186 | or below the PC. Variable sized instructions are taken into | |
187 | account by the algorithm. */ | |
aec2f747 | 188 | static CORE_ADDR |
13274fc3 | 189 | tui_find_disassembly_address (struct gdbarch *gdbarch, CORE_ADDR pc, int from) |
aec2f747 | 190 | { |
d02c80cd | 191 | CORE_ADDR new_low; |
6ba8e26f | 192 | int max_lines; |
aec2f747 | 193 | |
6ba8e26f | 194 | max_lines = (from > 0) ? from : - from; |
733d0a67 | 195 | if (max_lines == 0) |
6b915f7d | 196 | return pc; |
aec2f747 | 197 | |
733d0a67 | 198 | std::vector<tui_asm_line> asm_lines; |
aec2f747 | 199 | |
6ba8e26f | 200 | new_low = pc; |
aec2f747 SC |
201 | if (from > 0) |
202 | { | |
733d0a67 AB |
203 | /* Always disassemble 1 extra instruction here, then if the last |
204 | instruction fails to disassemble we will take the address of the | |
205 | previous instruction that did disassemble as the result. */ | |
206 | tui_disassemble (gdbarch, asm_lines, pc, max_lines + 1); | |
72535eb1 TV |
207 | if (asm_lines.empty ()) |
208 | return pc; | |
733d0a67 | 209 | new_low = asm_lines.back ().addr; |
aec2f747 SC |
210 | } |
211 | else | |
212 | { | |
733d0a67 AB |
213 | /* In order to disassemble backwards we need to find a suitable |
214 | address to start disassembling from and then work forward until we | |
215 | re-find the address we're currently at. We can then figure out | |
216 | which address will be at the top of the TUI window after our | |
217 | backward scroll. During our backward disassemble we need to be | |
218 | able to distinguish between the case where the last address we | |
219 | _can_ disassemble is ADDR, and the case where the disassembly | |
220 | just happens to stop at ADDR, for this reason we increase | |
221 | MAX_LINES by one. */ | |
222 | max_lines++; | |
223 | ||
224 | /* When we disassemble a series of instructions this will hold the | |
225 | address of the last instruction disassembled. */ | |
aec2f747 | 226 | CORE_ADDR last_addr; |
733d0a67 AB |
227 | |
228 | /* And this will hold the address of the next instruction that would | |
229 | have been disassembled. */ | |
230 | CORE_ADDR next_addr; | |
231 | ||
232 | /* As we search backward if we find an address that looks like a | |
233 | promising starting point then we record it in this structure. If | |
234 | the next address we try is not a suitable starting point then we | |
235 | will fall back to the address held here. */ | |
6b09f134 | 236 | std::optional<CORE_ADDR> possible_new_low; |
733d0a67 AB |
237 | |
238 | /* The previous value of NEW_LOW so we know if the new value is | |
239 | different or not. */ | |
240 | CORE_ADDR prev_low; | |
241 | ||
242 | do | |
243 | { | |
244 | /* Find an address from which we can start disassembling. */ | |
245 | prev_low = new_low; | |
246 | new_low = tui_find_backward_disassembly_start_address (new_low); | |
247 | ||
248 | /* Disassemble forward. */ | |
249 | next_addr = tui_disassemble (gdbarch, asm_lines, new_low, max_lines); | |
72535eb1 TV |
250 | if (asm_lines.empty ()) |
251 | break; | |
733d0a67 AB |
252 | last_addr = asm_lines.back ().addr; |
253 | ||
254 | /* If disassembling from the current value of NEW_LOW reached PC | |
255 | (or went past it) then this would do as a starting point if we | |
256 | can't find anything better, so remember it. */ | |
257 | if (last_addr >= pc && new_low != prev_low | |
258 | && asm_lines.size () >= max_lines) | |
259 | possible_new_low.emplace (new_low); | |
260 | ||
261 | /* Continue searching until we find a value of NEW_LOW from which | |
262 | disassembling MAX_LINES instructions doesn't reach PC. We | |
263 | know this means we can find the required number of previous | |
264 | instructions then. */ | |
265 | } | |
266 | while ((last_addr > pc | |
267 | || (last_addr == pc && asm_lines.size () < max_lines)) | |
268 | && new_low != prev_low); | |
269 | ||
aba9fa5f TV |
270 | /* If we failed to disassemble the required number of lines, try to fall |
271 | back to a previous possible start address in POSSIBLE_NEW_LOW. */ | |
733d0a67 AB |
272 | if (asm_lines.size () < max_lines) |
273 | { | |
274 | if (!possible_new_low.has_value ()) | |
42330a68 | 275 | return new_low; |
733d0a67 AB |
276 | |
277 | /* Take the best possible match we have. */ | |
278 | new_low = *possible_new_low; | |
279 | next_addr = tui_disassemble (gdbarch, asm_lines, new_low, max_lines); | |
733d0a67 | 280 | } |
aec2f747 | 281 | |
aba9fa5f TV |
282 | /* The following walk forward assumes that ASM_LINES contains exactly |
283 | MAX_LINES entries. */ | |
284 | gdb_assert (asm_lines.size () == max_lines); | |
285 | ||
1cc6d956 | 286 | /* Scan forward disassembling one instruction at a time until |
dda83cd7 SM |
287 | the last visible instruction of the window matches the pc. |
288 | We keep the disassembled instructions in the 'lines' window | |
289 | and shift it downward (increasing its addresses). */ | |
733d0a67 | 290 | int pos = max_lines - 1; |
6b682bbf | 291 | last_addr = asm_lines.back ().addr; |
aec2f747 | 292 | if (last_addr < pc) |
dda83cd7 SM |
293 | do |
294 | { | |
295 | pos++; | |
296 | if (pos >= max_lines) | |
297 | pos = 0; | |
aec2f747 | 298 | |
733d0a67 AB |
299 | CORE_ADDR old_next_addr = next_addr; |
300 | std::vector<tui_asm_line> single_asm_line; | |
301 | next_addr = tui_disassemble (gdbarch, single_asm_line, | |
302 | next_addr, 1); | |
dda83cd7 | 303 | /* If there are some problems while disassembling exit. */ |
733d0a67 AB |
304 | if (next_addr <= old_next_addr) |
305 | return pc; | |
306 | gdb_assert (single_asm_line.size () == 1); | |
307 | asm_lines[pos] = single_asm_line[0]; | |
308 | } while (next_addr <= pc); | |
aec2f747 | 309 | pos++; |
6ba8e26f | 310 | if (pos >= max_lines) |
dda83cd7 | 311 | pos = 0; |
4cfcaf21 | 312 | new_low = asm_lines[pos].addr; |
733d0a67 AB |
313 | |
314 | /* When scrolling backward the addresses should move backward, or at | |
315 | the very least stay the same if we are at the first address that | |
316 | can be disassembled. */ | |
317 | gdb_assert (new_low <= pc); | |
aec2f747 | 318 | } |
6ba8e26f | 319 | return new_low; |
aec2f747 SC |
320 | } |
321 | ||
322 | /* Function to set the disassembly window's content. */ | |
61c33f10 | 323 | bool |
81c82c4b | 324 | tui_disasm_window::set_contents (struct gdbarch *arch, |
9f7540a5 | 325 | const struct symtab_and_line &sal) |
c906108c | 326 | { |
d02c80cd | 327 | int i; |
9e820dec | 328 | int max_lines; |
aec2f747 | 329 | CORE_ADDR cur_pc; |
7806cea7 | 330 | int tab_len = tui_tab_width; |
aec2f747 | 331 | int insn_pos; |
1df2f9ef | 332 | |
9f7540a5 | 333 | CORE_ADDR pc = sal.pc; |
aec2f747 | 334 | if (pc == 0) |
61c33f10 | 335 | return false; |
aec2f747 | 336 | |
432b5c40 TT |
337 | m_gdbarch = arch; |
338 | m_start_line_or_addr.loa = LOA_ADDRESS; | |
339 | m_start_line_or_addr.u.addr = pc; | |
f237f998 | 340 | cur_pc = tui_location.addr (); |
aec2f747 | 341 | |
0bb65f1e | 342 | /* Window size, excluding highlight box. */ |
ff3c86a8 | 343 | max_lines = height - box_size (); |
aec2f747 SC |
344 | |
345 | /* Get temporary table that will hold all strings (addr & insn). */ | |
733d0a67 | 346 | std::vector<tui_asm_line> asm_lines; |
1df2f9ef | 347 | size_t addr_size = 0; |
432b5c40 | 348 | tui_disassemble (m_gdbarch, asm_lines, pc, max_lines, &addr_size); |
aec2f747 | 349 | |
f5396833 | 350 | /* Align instructions to the same column. */ |
aec2f747 SC |
351 | insn_pos = (1 + (addr_size / tab_len)) * tab_len; |
352 | ||
1cc6d956 | 353 | /* Now construct each line. */ |
432b5c40 | 354 | m_content.resize (max_lines); |
9e820dec | 355 | m_max_length = -1; |
6ba8e26f | 356 | for (i = 0; i < max_lines; i++) |
aec2f747 | 357 | { |
432b5c40 | 358 | tui_source_element *src = &m_content[i]; |
6b915f7d | 359 | |
733d0a67 AB |
360 | std::string line; |
361 | CORE_ADDR addr; | |
362 | ||
363 | if (i < asm_lines.size ()) | |
364 | { | |
365 | line | |
366 | = (asm_lines[i].addr_string | |
367 | + n_spaces (insn_pos - asm_lines[i].addr_size) | |
368 | + asm_lines[i].insn); | |
369 | addr = asm_lines[i].addr; | |
370 | } | |
371 | else | |
372 | { | |
373 | line = ""; | |
374 | addr = 0; | |
375 | } | |
aec2f747 | 376 | |
1df2f9ef | 377 | const char *ptr = line.c_str (); |
9e820dec TT |
378 | int line_len; |
379 | src->line = tui_copy_source_line (&ptr, &line_len); | |
380 | m_max_length = std::max (m_max_length, line_len); | |
aec2f747 | 381 | |
362c05fe | 382 | src->line_or_addr.loa = LOA_ADDRESS; |
733d0a67 AB |
383 | src->line_or_addr.u.addr = addr; |
384 | src->is_exec_point = (addr == cur_pc && line.size () > 0); | |
aec2f747 | 385 | } |
61c33f10 | 386 | return true; |
aec2f747 | 387 | } |
c906108c SS |
388 | |
389 | ||
13274fc3 UW |
390 | void |
391 | tui_get_begin_asm_address (struct gdbarch **gdbarch_p, CORE_ADDR *addr_p) | |
c906108c | 392 | { |
957b8b5a | 393 | struct gdbarch *gdbarch = get_current_arch (); |
52469d76 | 394 | CORE_ADDR addr = 0; |
c906108c | 395 | |
f237f998 | 396 | if (tui_location.addr () == 0) |
c906108c | 397 | { |
52469d76 TT |
398 | if (have_full_symbols () || have_partial_symbols ()) |
399 | { | |
400 | set_default_source_symtab_and_line (); | |
401 | struct symtab_and_line sal = get_current_source_symtab_and_line (); | |
402 | ||
403 | if (sal.symtab != nullptr) | |
404 | find_line_pc (sal.symtab, sal.line, &addr); | |
405 | } | |
406 | ||
407 | if (addr == 0) | |
408 | { | |
409 | struct bound_minimal_symbol main_symbol | |
410 | = lookup_minimal_symbol (main_name (), nullptr, nullptr); | |
411 | if (main_symbol.minsym != nullptr) | |
4aeddc50 | 412 | addr = main_symbol.value_address (); |
52469d76 | 413 | } |
c906108c | 414 | } |
1cc6d956 | 415 | else /* The target is executing. */ |
13274fc3 | 416 | { |
f237f998 AB |
417 | gdbarch = tui_location.gdbarch (); |
418 | addr = tui_location.addr (); | |
13274fc3 | 419 | } |
c906108c | 420 | |
13274fc3 UW |
421 | *gdbarch_p = gdbarch; |
422 | *addr_p = addr; | |
65f05602 | 423 | } |
c906108c | 424 | |
77cad3ba | 425 | /* Determine what the low address will be to display in the TUI's |
1cc6d956 MS |
426 | disassembly window. This may or may not be the same as the low |
427 | address input. */ | |
77cad3ba | 428 | CORE_ADDR |
13274fc3 UW |
429 | tui_get_low_disassembly_address (struct gdbarch *gdbarch, |
430 | CORE_ADDR low, CORE_ADDR pc) | |
77cad3ba SC |
431 | { |
432 | int pos; | |
433 | ||
1cc6d956 MS |
434 | /* Determine where to start the disassembly so that the pc is about |
435 | in the middle of the viewport. */ | |
2a3d458b TT |
436 | if (TUI_DISASM_WIN != NULL) |
437 | pos = TUI_DISASM_WIN->height; | |
6d7fd9aa TT |
438 | else if (TUI_CMD_WIN == NULL) |
439 | pos = tui_term_height () / 2 - 2; | |
440 | else | |
441 | pos = tui_term_height () - TUI_CMD_WIN->height - 2; | |
442 | pos = (pos - 2) / 2; | |
443 | ||
13274fc3 | 444 | pc = tui_find_disassembly_address (gdbarch, pc, -pos); |
77cad3ba SC |
445 | |
446 | if (pc < low) | |
447 | pc = low; | |
448 | return pc; | |
449 | } | |
450 | ||
65f05602 | 451 | /* Scroll the disassembly forward or backward vertically. */ |
c906108c | 452 | void |
c3bd716f | 453 | tui_disasm_window::do_scroll_vertical (int num_to_scroll) |
c906108c | 454 | { |
432b5c40 | 455 | if (!m_content.empty ()) |
c906108c | 456 | { |
aec2f747 | 457 | CORE_ADDR pc; |
c906108c | 458 | |
432b5c40 | 459 | pc = m_start_line_or_addr.u.addr; |
c906108c | 460 | |
9f7540a5 TT |
461 | symtab_and_line sal {}; |
462 | sal.pspace = current_program_space; | |
432b5c40 TT |
463 | sal.pc = tui_find_disassembly_address (m_gdbarch, pc, num_to_scroll); |
464 | update_source_window_as_is (m_gdbarch, sal); | |
aec2f747 SC |
465 | } |
466 | } | |
c2cd8994 TT |
467 | |
468 | bool | |
469 | tui_disasm_window::location_matches_p (struct bp_location *loc, int line_no) | |
470 | { | |
432b5c40 TT |
471 | return (m_content[line_no].line_or_addr.loa == LOA_ADDRESS |
472 | && m_content[line_no].line_or_addr.u.addr == loc->address); | |
c2cd8994 | 473 | } |
a54700c6 | 474 | |
088f37dd TT |
475 | bool |
476 | tui_disasm_window::addr_is_displayed (CORE_ADDR addr) const | |
477 | { | |
432b5c40 | 478 | if (m_content.size () < SCROLL_THRESHOLD) |
cbfa8581 | 479 | return false; |
088f37dd | 480 | |
432b5c40 | 481 | for (size_t i = 0; i < m_content.size () - SCROLL_THRESHOLD; ++i) |
088f37dd | 482 | { |
432b5c40 TT |
483 | if (m_content[i].line_or_addr.loa == LOA_ADDRESS |
484 | && m_content[i].line_or_addr.u.addr == addr) | |
cbfa8581 | 485 | return true; |
088f37dd TT |
486 | } |
487 | ||
cbfa8581 | 488 | return false; |
088f37dd TT |
489 | } |
490 | ||
a54700c6 | 491 | void |
8480a37e | 492 | tui_disasm_window::maybe_update (const frame_info_ptr &fi, symtab_and_line sal) |
a54700c6 TT |
493 | { |
494 | CORE_ADDR low; | |
495 | ||
1ae58f0c TT |
496 | struct gdbarch *frame_arch = get_frame_arch (fi); |
497 | ||
498 | if (find_pc_partial_function (sal.pc, NULL, &low, NULL) == 0) | |
a54700c6 TT |
499 | { |
500 | /* There is no symbol available for current PC. There is no | |
501 | safe way how to "disassemble backwards". */ | |
1ae58f0c | 502 | low = sal.pc; |
a54700c6 TT |
503 | } |
504 | else | |
1ae58f0c | 505 | low = tui_get_low_disassembly_address (frame_arch, low, sal.pc); |
a54700c6 TT |
506 | |
507 | struct tui_line_or_address a; | |
508 | ||
509 | a.loa = LOA_ADDRESS; | |
510 | a.u.addr = low; | |
1ae58f0c | 511 | if (!addr_is_displayed (sal.pc)) |
9f7540a5 TT |
512 | { |
513 | sal.pc = low; | |
514 | update_source_window (frame_arch, sal); | |
515 | } | |
a54700c6 TT |
516 | else |
517 | { | |
1ae58f0c | 518 | a.u.addr = sal.pc; |
a54700c6 TT |
519 | set_is_exec_point_at (a); |
520 | } | |
521 | } | |
432b5c40 TT |
522 | |
523 | void | |
524 | tui_disasm_window::display_start_addr (struct gdbarch **gdbarch_p, | |
525 | CORE_ADDR *addr_p) | |
526 | { | |
527 | *gdbarch_p = m_gdbarch; | |
528 | *addr_p = m_start_line_or_addr.u.addr; | |
529 | } | |
72535eb1 TV |
530 | |
531 | #if GDB_SELF_TEST | |
532 | namespace selftests { | |
533 | namespace tui { | |
534 | namespace disasm { | |
535 | ||
536 | static void | |
537 | run_tests () | |
538 | { | |
539 | if (current_inferior () != nullptr) | |
540 | { | |
27b1f19f | 541 | gdbarch *gdbarch = current_inferior ()->arch (); |
72535eb1 TV |
542 | |
543 | /* Check that tui_find_disassembly_address robustly handles the case of | |
544 | being passed a PC for which gdb_print_insn throws a MEMORY_ERROR. */ | |
545 | SELF_CHECK (tui_find_disassembly_address (gdbarch, 0, 1) == 0); | |
546 | SELF_CHECK (tui_find_disassembly_address (gdbarch, 0, -1) == 0); | |
547 | } | |
548 | } | |
549 | ||
550 | } /* namespace disasm */ | |
551 | } /* namespace tui */ | |
552 | } /* namespace selftests */ | |
553 | #endif /* GDB_SELF_TEST */ | |
554 | ||
555 | void _initialize_tui_disasm (); | |
556 | void | |
557 | _initialize_tui_disasm () | |
558 | { | |
559 | #if GDB_SELF_TEST | |
560 | selftests::register_test ("tui-disasm", selftests::tui::disasm::run_tests); | |
561 | #endif | |
562 | } |