Commit | Line | Data |
---|---|---|
bb2ec1b3 TT |
1 | /* General Compile and inject code |
2 | ||
42a4f53d | 3 | Copyright (C) 2014-2019 Free Software Foundation, Inc. |
bb2ec1b3 TT |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
cb814510 | 21 | #include "top.h" |
bb2ec1b3 TT |
22 | #include "ui-out.h" |
23 | #include "command.h" | |
24 | #include "cli/cli-script.h" | |
25 | #include "cli/cli-utils.h" | |
7d8062de | 26 | #include "cli/cli-option.h" |
bb2ec1b3 TT |
27 | #include "completer.h" |
28 | #include "gdbcmd.h" | |
29 | #include "compile.h" | |
30 | #include "compile-internal.h" | |
31 | #include "compile-object-load.h" | |
32 | #include "compile-object-run.h" | |
33 | #include "language.h" | |
34 | #include "frame.h" | |
35 | #include "source.h" | |
36 | #include "block.h" | |
37 | #include "arch-utils.h" | |
0747795c | 38 | #include "common/filestuff.h" |
bb2ec1b3 TT |
39 | #include "target.h" |
40 | #include "osabi.h" | |
0747795c | 41 | #include "common/gdb_wait.h" |
36de76f9 | 42 | #include "valprint.h" |
b80cf838 TT |
43 | #include "common/gdb_optional.h" |
44 | #include "common/gdb_unlinker.h" | |
b4987c95 | 45 | #include "common/pathstuff.h" |
bb2ec1b3 TT |
46 | |
47 | \f | |
48 | ||
49 | /* Initial filename for temporary files. */ | |
50 | ||
51 | #define TMP_PREFIX "/tmp/gdbobj-" | |
52 | ||
53 | /* Hold "compile" commands. */ | |
54 | ||
55 | static struct cmd_list_element *compile_command_list; | |
56 | ||
57 | /* Debug flag for "compile" commands. */ | |
58 | ||
59 | int compile_debug; | |
60 | ||
946d3d10 KS |
61 | /* Object of this type are stored in the compiler's symbol_err_map. */ |
62 | ||
63 | struct symbol_error | |
64 | { | |
65 | /* The symbol. */ | |
66 | ||
67 | const struct symbol *sym; | |
68 | ||
69 | /* The error message to emit. This is malloc'd and owned by the | |
70 | hash table. */ | |
71 | ||
72 | char *message; | |
73 | }; | |
74 | ||
75 | /* Hash a type_map_instance. */ | |
76 | ||
77 | static hashval_t | |
78 | hash_type_map_instance (const void *p) | |
79 | { | |
80 | const struct type_map_instance *inst = (const struct type_map_instance *) p; | |
81 | ||
82 | return htab_hash_pointer (inst->type); | |
83 | } | |
84 | ||
85 | /* Check two type_map_instance objects for equality. */ | |
86 | ||
87 | static int | |
88 | eq_type_map_instance (const void *a, const void *b) | |
89 | { | |
90 | const struct type_map_instance *insta = (const struct type_map_instance *) a; | |
91 | const struct type_map_instance *instb = (const struct type_map_instance *) b; | |
92 | ||
93 | return insta->type == instb->type; | |
94 | } | |
95 | ||
96 | /* Hash function for struct symbol_error. */ | |
97 | ||
98 | static hashval_t | |
99 | hash_symbol_error (const void *a) | |
100 | { | |
101 | const struct symbol_error *se = (const struct symbol_error *) a; | |
102 | ||
103 | return htab_hash_pointer (se->sym); | |
104 | } | |
105 | ||
106 | /* Equality function for struct symbol_error. */ | |
107 | ||
108 | static int | |
109 | eq_symbol_error (const void *a, const void *b) | |
110 | { | |
111 | const struct symbol_error *sea = (const struct symbol_error *) a; | |
112 | const struct symbol_error *seb = (const struct symbol_error *) b; | |
113 | ||
114 | return sea->sym == seb->sym; | |
115 | } | |
116 | ||
117 | /* Deletion function for struct symbol_error. */ | |
118 | ||
119 | static void | |
120 | del_symbol_error (void *a) | |
121 | { | |
122 | struct symbol_error *se = (struct symbol_error *) a; | |
123 | ||
124 | xfree (se->message); | |
125 | xfree (se); | |
126 | } | |
127 | ||
128 | /* Constructor for compile_instance. */ | |
129 | ||
130 | compile_instance::compile_instance (struct gcc_base_context *gcc_fe, | |
131 | const char *options) | |
132 | : m_gcc_fe (gcc_fe), m_gcc_target_options (options), | |
0cfbf430 KS |
133 | m_type_map (htab_create_alloc (10, hash_type_map_instance, |
134 | eq_type_map_instance, | |
135 | xfree, xcalloc, xfree)), | |
136 | m_symbol_err_map (htab_create_alloc (10, hash_symbol_error, | |
137 | eq_symbol_error, del_symbol_error, | |
138 | xcalloc, xfree)) | |
946d3d10 | 139 | { |
946d3d10 KS |
140 | } |
141 | ||
142 | /* See compile-internal.h. */ | |
143 | ||
144 | bool | |
d82b3862 | 145 | compile_instance::get_cached_type (struct type *type, gcc_type *ret) const |
946d3d10 KS |
146 | { |
147 | struct type_map_instance inst, *found; | |
148 | ||
149 | inst.type = type; | |
0cfbf430 | 150 | found = (struct type_map_instance *) htab_find (m_type_map.get (), &inst); |
946d3d10 KS |
151 | if (found != NULL) |
152 | { | |
d82b3862 | 153 | *ret = found->gcc_type_handle; |
946d3d10 KS |
154 | return true; |
155 | } | |
156 | ||
157 | return false; | |
158 | } | |
159 | ||
160 | /* See compile-internal.h. */ | |
161 | ||
162 | void | |
163 | compile_instance::insert_type (struct type *type, gcc_type gcc_type) | |
164 | { | |
165 | struct type_map_instance inst, *add; | |
166 | void **slot; | |
167 | ||
168 | inst.type = type; | |
169 | inst.gcc_type_handle = gcc_type; | |
0cfbf430 | 170 | slot = htab_find_slot (m_type_map.get (), &inst, INSERT); |
946d3d10 KS |
171 | |
172 | add = (struct type_map_instance *) *slot; | |
173 | /* The type might have already been inserted in order to handle | |
174 | recursive types. */ | |
175 | if (add != NULL && add->gcc_type_handle != gcc_type) | |
176 | error (_("Unexpected type id from GCC, check you use recent enough GCC.")); | |
177 | ||
178 | if (add == NULL) | |
179 | { | |
180 | add = XNEW (struct type_map_instance); | |
181 | *add = inst; | |
182 | *slot = add; | |
183 | } | |
184 | } | |
185 | ||
186 | /* See compile-internal.h. */ | |
187 | ||
188 | void | |
189 | compile_instance::insert_symbol_error (const struct symbol *sym, | |
190 | const char *text) | |
191 | { | |
192 | struct symbol_error e; | |
193 | void **slot; | |
194 | ||
946d3d10 | 195 | e.sym = sym; |
0cfbf430 | 196 | slot = htab_find_slot (m_symbol_err_map.get (), &e, INSERT); |
946d3d10 KS |
197 | if (*slot == NULL) |
198 | { | |
b926417a | 199 | struct symbol_error *ep = XNEW (struct symbol_error); |
946d3d10 | 200 | |
b926417a TT |
201 | ep->sym = sym; |
202 | ep->message = xstrdup (text); | |
203 | *slot = ep; | |
946d3d10 KS |
204 | } |
205 | } | |
206 | ||
207 | /* See compile-internal.h. */ | |
208 | ||
209 | void | |
210 | compile_instance::error_symbol_once (const struct symbol *sym) | |
211 | { | |
212 | struct symbol_error search; | |
213 | struct symbol_error *err; | |
214 | ||
215 | if (m_symbol_err_map == NULL) | |
216 | return; | |
217 | ||
218 | search.sym = sym; | |
0cfbf430 | 219 | err = (struct symbol_error *) htab_find (m_symbol_err_map.get (), &search); |
946d3d10 KS |
220 | if (err == NULL || err->message == NULL) |
221 | return; | |
222 | ||
223 | gdb::unique_xmalloc_ptr<char> message (err->message); | |
224 | err->message = NULL; | |
225 | error (_("%s"), message.get ()); | |
226 | } | |
227 | ||
bb2ec1b3 TT |
228 | /* Implement "show debug compile". */ |
229 | ||
230 | static void | |
231 | show_compile_debug (struct ui_file *file, int from_tty, | |
232 | struct cmd_list_element *c, const char *value) | |
233 | { | |
234 | fprintf_filtered (file, _("Compile debugging is %s.\n"), value); | |
235 | } | |
236 | ||
237 | \f | |
238 | ||
239 | /* Check *ARG for a "-raw" or "-r" argument. Return 0 if not seen. | |
240 | Return 1 if seen and update *ARG. */ | |
241 | ||
242 | static int | |
6663cf91 | 243 | check_raw_argument (const char **arg) |
bb2ec1b3 TT |
244 | { |
245 | *arg = skip_spaces (*arg); | |
246 | ||
247 | if (arg != NULL | |
248 | && (check_for_argument (arg, "-raw", sizeof ("-raw") - 1) | |
249 | || check_for_argument (arg, "-r", sizeof ("-r") - 1))) | |
250 | return 1; | |
251 | return 0; | |
252 | } | |
253 | ||
254 | /* Handle the input from the 'compile file' command. The "compile | |
255 | file" command is used to evaluate an expression contained in a file | |
256 | that may contain calls to the GCC compiler. */ | |
257 | ||
258 | static void | |
6663cf91 | 259 | compile_file_command (const char *arg, int from_tty) |
bb2ec1b3 TT |
260 | { |
261 | enum compile_i_scope_types scope = COMPILE_I_SIMPLE_SCOPE; | |
bb2ec1b3 | 262 | |
b7b633e9 | 263 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); |
bb2ec1b3 TT |
264 | |
265 | /* Check the user did not just <enter> after command. */ | |
266 | if (arg == NULL) | |
267 | error (_("You must provide a filename for this command.")); | |
268 | ||
269 | /* Check if a raw (-r|-raw) argument is provided. */ | |
270 | if (arg != NULL && check_raw_argument (&arg)) | |
271 | { | |
272 | scope = COMPILE_I_RAW_SCOPE; | |
273 | arg = skip_spaces (arg); | |
274 | } | |
275 | ||
276 | /* After processing arguments, check there is a filename at the end | |
277 | of the command. */ | |
278 | if (arg[0] == '\0') | |
279 | error (_("You must provide a filename with the raw option set.")); | |
280 | ||
281 | if (arg[0] == '-') | |
282 | error (_("Unknown argument specified.")); | |
283 | ||
284 | arg = skip_spaces (arg); | |
e3e41d58 TT |
285 | gdb::unique_xmalloc_ptr<char> abspath = gdb_abspath (arg); |
286 | std::string buffer = string_printf ("#include \"%s\"\n", abspath.get ()); | |
287 | eval_compile_command (NULL, buffer.c_str (), scope, NULL); | |
bb2ec1b3 TT |
288 | } |
289 | ||
290 | /* Handle the input from the 'compile code' command. The | |
291 | "compile code" command is used to evaluate an expression that may | |
292 | contain calls to the GCC compiler. The language expected in this | |
293 | compile command is the language currently set in GDB. */ | |
294 | ||
295 | static void | |
6663cf91 | 296 | compile_code_command (const char *arg, int from_tty) |
bb2ec1b3 | 297 | { |
bb2ec1b3 TT |
298 | enum compile_i_scope_types scope = COMPILE_I_SIMPLE_SCOPE; |
299 | ||
b7b633e9 | 300 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); |
bb2ec1b3 TT |
301 | |
302 | if (arg != NULL && check_raw_argument (&arg)) | |
303 | { | |
304 | scope = COMPILE_I_RAW_SCOPE; | |
305 | arg = skip_spaces (arg); | |
306 | } | |
307 | ||
308 | arg = skip_spaces (arg); | |
309 | ||
310 | if (arg != NULL && !check_for_argument (&arg, "--", sizeof ("--") - 1)) | |
311 | { | |
312 | if (arg[0] == '-') | |
313 | error (_("Unknown argument specified.")); | |
314 | } | |
315 | ||
316 | if (arg && *arg) | |
5c65b58a | 317 | eval_compile_command (NULL, arg, scope, NULL); |
bb2ec1b3 TT |
318 | else |
319 | { | |
12973681 | 320 | counted_command_line l = get_command_line (compile_control, ""); |
bb2ec1b3 | 321 | |
bb2ec1b3 | 322 | l->control_u.compile.scope = scope; |
93921405 | 323 | execute_control_command_untraced (l.get ()); |
bb2ec1b3 | 324 | } |
bb2ec1b3 TT |
325 | } |
326 | ||
36de76f9 JK |
327 | /* Callback for compile_print_command. */ |
328 | ||
329 | void | |
330 | compile_print_value (struct value *val, void *data_voidp) | |
331 | { | |
7d8062de | 332 | const value_print_options *print_opts = (value_print_options *) data_voidp; |
36de76f9 | 333 | |
7d8062de | 334 | print_value (val, *print_opts); |
36de76f9 JK |
335 | } |
336 | ||
337 | /* Handle the input from the 'compile print' command. The "compile | |
338 | print" command is used to evaluate and print an expression that may | |
339 | contain calls to the GCC compiler. The language expected in this | |
340 | compile command is the language currently set in GDB. */ | |
341 | ||
342 | static void | |
6663cf91 | 343 | compile_print_command (const char *arg, int from_tty) |
36de76f9 | 344 | { |
36de76f9 | 345 | enum compile_i_scope_types scope = COMPILE_I_PRINT_ADDRESS_SCOPE; |
7d8062de | 346 | value_print_options print_opts; |
36de76f9 | 347 | |
b7b633e9 | 348 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); |
36de76f9 | 349 | |
7d8062de PA |
350 | get_user_print_options (&print_opts); |
351 | /* Override global settings with explicit options, if any. */ | |
352 | auto group = make_value_print_options_def_group (&print_opts); | |
353 | gdb::option::process_options | |
354 | (&arg, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group); | |
355 | ||
356 | print_command_parse_format (&arg, "compile print", &print_opts); | |
357 | ||
358 | /* Passing &PRINT_OPTS as SCOPE_DATA is safe as do_module_cleanup | |
359 | will not touch the stale pointer if compile_object_run has | |
360 | already quit. */ | |
36de76f9 JK |
361 | |
362 | if (arg && *arg) | |
7d8062de | 363 | eval_compile_command (NULL, arg, scope, &print_opts); |
36de76f9 JK |
364 | else |
365 | { | |
12973681 | 366 | counted_command_line l = get_command_line (compile_control, ""); |
36de76f9 | 367 | |
36de76f9 | 368 | l->control_u.compile.scope = scope; |
7d8062de | 369 | l->control_u.compile.scope_data = &print_opts; |
93921405 | 370 | execute_control_command_untraced (l.get ()); |
36de76f9 | 371 | } |
36de76f9 JK |
372 | } |
373 | ||
bb2ec1b3 TT |
374 | /* A cleanup function to remove a directory and all its contents. */ |
375 | ||
376 | static void | |
377 | do_rmdir (void *arg) | |
378 | { | |
9a3c8263 | 379 | const char *dir = (const char *) arg; |
bb2ec1b3 | 380 | char *zap; |
3ce348af CG |
381 | int wstat; |
382 | ||
61012eef | 383 | gdb_assert (startswith (dir, TMP_PREFIX)); |
bb2ec1b3 | 384 | zap = concat ("rm -rf ", dir, (char *) NULL); |
3ce348af CG |
385 | wstat = system (zap); |
386 | if (wstat == -1 || !WIFEXITED (wstat) || WEXITSTATUS (wstat) != 0) | |
387 | warning (_("Could not remove temporary directory %s"), dir); | |
388 | XDELETEVEC (zap); | |
bb2ec1b3 TT |
389 | } |
390 | ||
391 | /* Return the name of the temporary directory to use for .o files, and | |
392 | arrange for the directory to be removed at shutdown. */ | |
393 | ||
394 | static const char * | |
395 | get_compile_file_tempdir (void) | |
396 | { | |
397 | static char *tempdir_name; | |
398 | ||
399 | #define TEMPLATE TMP_PREFIX "XXXXXX" | |
400 | char tname[sizeof (TEMPLATE)]; | |
401 | ||
402 | if (tempdir_name != NULL) | |
403 | return tempdir_name; | |
404 | ||
405 | strcpy (tname, TEMPLATE); | |
406 | #undef TEMPLATE | |
407 | tempdir_name = mkdtemp (tname); | |
408 | if (tempdir_name == NULL) | |
409 | perror_with_name (_("Could not make temporary directory")); | |
410 | ||
411 | tempdir_name = xstrdup (tempdir_name); | |
412 | make_final_cleanup (do_rmdir, tempdir_name); | |
413 | return tempdir_name; | |
414 | } | |
415 | ||
aaee65ae | 416 | /* Compute the names of source and object files to use. */ |
bb2ec1b3 | 417 | |
aaee65ae PA |
418 | static compile_file_names |
419 | get_new_file_names () | |
bb2ec1b3 TT |
420 | { |
421 | static int seq; | |
422 | const char *dir = get_compile_file_tempdir (); | |
423 | ||
424 | ++seq; | |
aaee65ae PA |
425 | |
426 | return compile_file_names (string_printf ("%s%sout%d.c", | |
427 | dir, SLASH_STRING, seq), | |
428 | string_printf ("%s%sout%d.o", | |
429 | dir, SLASH_STRING, seq)); | |
bb2ec1b3 TT |
430 | } |
431 | ||
432 | /* Get the block and PC at which to evaluate an expression. */ | |
433 | ||
434 | static const struct block * | |
435 | get_expr_block_and_pc (CORE_ADDR *pc) | |
436 | { | |
437 | const struct block *block = get_selected_block (pc); | |
438 | ||
439 | if (block == NULL) | |
440 | { | |
441 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); | |
442 | ||
443 | if (cursal.symtab) | |
444 | block = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (cursal.symtab), | |
445 | STATIC_BLOCK); | |
446 | if (block != NULL) | |
2b1ffcfd | 447 | *pc = BLOCK_ENTRY_PC (block); |
bb2ec1b3 TT |
448 | } |
449 | else | |
2b1ffcfd | 450 | *pc = BLOCK_ENTRY_PC (block); |
bb2ec1b3 TT |
451 | |
452 | return block; | |
453 | } | |
454 | ||
773a1edc TT |
455 | /* Call buildargv (via gdb_argv), set its result for S into *ARGVP but |
456 | calculate also the number of parsed arguments into *ARGCP. If | |
457 | buildargv has returned NULL then *ARGCP is set to zero. */ | |
bb2ec1b3 TT |
458 | |
459 | static void | |
460 | build_argc_argv (const char *s, int *argcp, char ***argvp) | |
461 | { | |
773a1edc TT |
462 | gdb_argv args (s); |
463 | ||
464 | *argcp = args.count (); | |
465 | *argvp = args.release (); | |
bb2ec1b3 TT |
466 | } |
467 | ||
468 | /* String for 'set compile-args' and 'show compile-args'. */ | |
469 | static char *compile_args; | |
470 | ||
471 | /* Parsed form of COMPILE_ARGS. COMPILE_ARGS_ARGV is NULL terminated. */ | |
472 | static int compile_args_argc; | |
473 | static char **compile_args_argv; | |
474 | ||
475 | /* Implement 'set compile-args'. */ | |
476 | ||
477 | static void | |
eb4c3f4a | 478 | set_compile_args (const char *args, int from_tty, struct cmd_list_element *c) |
bb2ec1b3 TT |
479 | { |
480 | freeargv (compile_args_argv); | |
481 | build_argc_argv (compile_args, &compile_args_argc, &compile_args_argv); | |
482 | } | |
483 | ||
484 | /* Implement 'show compile-args'. */ | |
485 | ||
486 | static void | |
487 | show_compile_args (struct ui_file *file, int from_tty, | |
488 | struct cmd_list_element *c, const char *value) | |
489 | { | |
490 | fprintf_filtered (file, _("Compile command command-line arguments " | |
491 | "are \"%s\".\n"), | |
492 | value); | |
493 | } | |
494 | ||
495 | /* Append ARGC and ARGV (as parsed by build_argc_argv) to *ARGCP and *ARGVP. | |
496 | ARGCP+ARGVP can be zero+NULL and also ARGC+ARGV can be zero+NULL. */ | |
497 | ||
498 | static void | |
499 | append_args (int *argcp, char ***argvp, int argc, char **argv) | |
500 | { | |
501 | int argi; | |
502 | ||
8d749320 | 503 | *argvp = XRESIZEVEC (char *, *argvp, (*argcp + argc + 1)); |
bb2ec1b3 TT |
504 | |
505 | for (argi = 0; argi < argc; argi++) | |
506 | (*argvp)[(*argcp)++] = xstrdup (argv[argi]); | |
507 | (*argvp)[(*argcp)] = NULL; | |
508 | } | |
509 | ||
6e41ddec JK |
510 | /* String for 'set compile-gcc' and 'show compile-gcc'. */ |
511 | static char *compile_gcc; | |
512 | ||
513 | /* Implement 'show compile-gcc'. */ | |
514 | ||
515 | static void | |
516 | show_compile_gcc (struct ui_file *file, int from_tty, | |
517 | struct cmd_list_element *c, const char *value) | |
518 | { | |
519 | fprintf_filtered (file, _("Compile command GCC driver filename is \"%s\".\n"), | |
520 | value); | |
521 | } | |
522 | ||
bb2ec1b3 TT |
523 | /* Return DW_AT_producer parsed for get_selected_frame () (if any). |
524 | Return NULL otherwise. | |
525 | ||
526 | GCC already filters its command-line arguments only for the suitable ones to | |
527 | put into DW_AT_producer - see GCC function gen_producer_string. */ | |
528 | ||
529 | static const char * | |
530 | get_selected_pc_producer_options (void) | |
531 | { | |
532 | CORE_ADDR pc = get_frame_pc (get_selected_frame (NULL)); | |
533 | struct compunit_symtab *symtab = find_pc_compunit_symtab (pc); | |
534 | const char *cs; | |
535 | ||
536 | if (symtab == NULL || symtab->producer == NULL | |
61012eef | 537 | || !startswith (symtab->producer, "GNU ")) |
bb2ec1b3 TT |
538 | return NULL; |
539 | ||
540 | cs = symtab->producer; | |
541 | while (*cs != 0 && *cs != '-') | |
f1735a53 | 542 | cs = skip_spaces (skip_to_space (cs)); |
bb2ec1b3 TT |
543 | if (*cs != '-') |
544 | return NULL; | |
545 | return cs; | |
546 | } | |
547 | ||
a7606d80 JK |
548 | /* Filter out unwanted options from *ARGCP and ARGV. */ |
549 | ||
550 | static void | |
551 | filter_args (int *argcp, char **argv) | |
552 | { | |
553 | char **destv; | |
554 | ||
555 | for (destv = argv; *argv != NULL; argv++) | |
556 | { | |
557 | /* -fpreprocessed may get in commonly from ccache. */ | |
558 | if (strcmp (*argv, "-fpreprocessed") == 0) | |
559 | { | |
560 | xfree (*argv); | |
561 | (*argcp)--; | |
562 | continue; | |
563 | } | |
564 | *destv++ = *argv; | |
565 | } | |
566 | *destv = NULL; | |
567 | } | |
568 | ||
e05cac70 PM |
569 | /* Produce final vector of GCC compilation options. |
570 | ||
571 | The first element of the combined argument vector are arguments | |
572 | relating to the target size ("-m64", "-m32" etc.). These are | |
573 | sourced from the inferior's architecture. | |
574 | ||
575 | The second element of the combined argument vector are arguments | |
576 | stored in the inferior DW_AT_producer section. If these are stored | |
577 | in the inferior (there is no guarantee that they are), they are | |
578 | added to the vector. | |
579 | ||
580 | The third element of the combined argument vector are argument | |
581 | supplied by the language implementation provided by | |
582 | compile-{lang}-support. These contain language specific arguments. | |
583 | ||
584 | The final element of the combined argument vector are arguments | |
585 | supplied by the "set compile-args" command. These are always | |
586 | appended last so as to override any of the arguments automatically | |
587 | generated above. */ | |
bb2ec1b3 TT |
588 | |
589 | static void | |
9cdfd9a2 | 590 | get_args (const compile_instance *compiler, struct gdbarch *gdbarch, |
bb2ec1b3 TT |
591 | int *argcp, char ***argvp) |
592 | { | |
593 | const char *cs_producer_options; | |
594 | int argc_compiler; | |
595 | char **argv_compiler; | |
596 | ||
597 | build_argc_argv (gdbarch_gcc_target_options (gdbarch), | |
598 | argcp, argvp); | |
599 | ||
600 | cs_producer_options = get_selected_pc_producer_options (); | |
601 | if (cs_producer_options != NULL) | |
602 | { | |
603 | int argc_producer; | |
604 | char **argv_producer; | |
605 | ||
606 | build_argc_argv (cs_producer_options, &argc_producer, &argv_producer); | |
a7606d80 | 607 | filter_args (&argc_producer, argv_producer); |
bb2ec1b3 TT |
608 | append_args (argcp, argvp, argc_producer, argv_producer); |
609 | freeargv (argv_producer); | |
610 | } | |
611 | ||
9cdfd9a2 | 612 | build_argc_argv (compiler->gcc_target_options ().c_str (), |
bb2ec1b3 TT |
613 | &argc_compiler, &argv_compiler); |
614 | append_args (argcp, argvp, argc_compiler, argv_compiler); | |
615 | freeargv (argv_compiler); | |
616 | ||
617 | append_args (argcp, argvp, compile_args_argc, compile_args_argv); | |
618 | } | |
619 | ||
bb2ec1b3 TT |
620 | /* A helper function suitable for use as the "print_callback" in the |
621 | compiler object. */ | |
622 | ||
623 | static void | |
624 | print_callback (void *ignore, const char *message) | |
625 | { | |
626 | fputs_filtered (message, gdb_stderr); | |
627 | } | |
628 | ||
629 | /* Process the compilation request. On success it returns the object | |
aaee65ae PA |
630 | and source file names. On an error condition, error () is |
631 | called. */ | |
bb2ec1b3 | 632 | |
aaee65ae | 633 | static compile_file_names |
851c9091 | 634 | compile_to_object (struct command_line *cmd, const char *cmd_string, |
aaee65ae | 635 | enum compile_i_scope_types scope) |
bb2ec1b3 | 636 | { |
bb2ec1b3 TT |
637 | const struct block *expr_block; |
638 | CORE_ADDR trash_pc, expr_pc; | |
639 | int argc; | |
640 | char **argv; | |
641 | int ok; | |
bb2ec1b3 | 642 | struct gdbarch *gdbarch = get_current_arch (); |
7d937cad | 643 | std::string triplet_rx; |
bb2ec1b3 TT |
644 | |
645 | if (!target_has_execution) | |
646 | error (_("The program must be running for the compile command to "\ | |
647 | "work.")); | |
648 | ||
649 | expr_block = get_expr_block_and_pc (&trash_pc); | |
650 | expr_pc = get_frame_address_in_block (get_selected_frame (NULL)); | |
651 | ||
652 | /* Set up instance and context for the compiler. */ | |
653 | if (current_language->la_get_compile_instance == NULL) | |
cdaec3f3 LM |
654 | error (_("No compiler support for language %s."), |
655 | current_language->la_name); | |
bb2ec1b3 | 656 | |
9cdfd9a2 KS |
657 | compile_instance *compiler_instance |
658 | = current_language->la_get_compile_instance (); | |
659 | std::unique_ptr<compile_instance> compiler (compiler_instance); | |
660 | compiler->set_print_callback (print_callback, NULL); | |
661 | compiler->set_scope (scope); | |
662 | compiler->set_block (expr_block); | |
bb2ec1b3 TT |
663 | |
664 | /* From the provided expression, build a scope to pass to the | |
665 | compiler. */ | |
aaee65ae | 666 | |
d7e74731 | 667 | string_file input_buf; |
aaee65ae PA |
668 | const char *input; |
669 | ||
bb2ec1b3 TT |
670 | if (cmd != NULL) |
671 | { | |
bb2ec1b3 TT |
672 | struct command_line *iter; |
673 | ||
12973681 | 674 | for (iter = cmd->body_list_0.get (); iter; iter = iter->next) |
bb2ec1b3 | 675 | { |
d7e74731 PA |
676 | input_buf.puts (iter->line); |
677 | input_buf.puts ("\n"); | |
bb2ec1b3 TT |
678 | } |
679 | ||
aaee65ae | 680 | input = input_buf.c_str (); |
bb2ec1b3 TT |
681 | } |
682 | else if (cmd_string != NULL) | |
851c9091 | 683 | input = cmd_string; |
bb2ec1b3 TT |
684 | else |
685 | error (_("Neither a simple expression, or a multi-line specified.")); | |
686 | ||
aaee65ae | 687 | std::string code |
9cdfd9a2 | 688 | = current_language->la_compute_program (compiler.get (), input, gdbarch, |
aaee65ae | 689 | expr_block, expr_pc); |
bb2ec1b3 | 690 | if (compile_debug) |
aaee65ae | 691 | fprintf_unfiltered (gdb_stdlog, "debug output:\n\n%s", code.c_str ()); |
bb2ec1b3 | 692 | |
9cdfd9a2 | 693 | compiler->set_verbose (compile_debug); |
71b30f27 | 694 | |
6e41ddec JK |
695 | if (compile_gcc[0] != 0) |
696 | { | |
9cdfd9a2 | 697 | if (compiler->version () < GCC_FE_VERSION_1) |
6e41ddec JK |
698 | error (_("Command 'set compile-gcc' requires GCC version 6 or higher " |
699 | "(libcc1 interface version 1 or higher)")); | |
700 | ||
9cdfd9a2 | 701 | compiler->set_driver_filename (compile_gcc); |
6e41ddec JK |
702 | } |
703 | else | |
704 | { | |
705 | const char *os_rx = osabi_triplet_regexp (gdbarch_osabi (gdbarch)); | |
706 | const char *arch_rx = gdbarch_gnu_triplet_regexp (gdbarch); | |
707 | ||
708 | /* Allow triplets with or without vendor set. */ | |
7d937cad | 709 | triplet_rx = std::string (arch_rx) + "(-[^-]*)?-" + os_rx; |
9cdfd9a2 | 710 | compiler->set_triplet_regexp (triplet_rx.c_str ()); |
6e41ddec | 711 | } |
bb2ec1b3 TT |
712 | |
713 | /* Set compiler command-line arguments. */ | |
9cdfd9a2 | 714 | get_args (compiler.get (), gdbarch, &argc, &argv); |
773a1edc | 715 | gdb_argv argv_holder (argv); |
bb2ec1b3 | 716 | |
9cdfd9a2 KS |
717 | gdb::unique_xmalloc_ptr<char> error_message; |
718 | error_message.reset (compiler->set_arguments (argc, argv, | |
719 | triplet_rx.c_str ())); | |
720 | ||
bb2ec1b3 | 721 | if (error_message != NULL) |
9cdfd9a2 | 722 | error ("%s", error_message.get ()); |
bb2ec1b3 TT |
723 | |
724 | if (compile_debug) | |
725 | { | |
726 | int argi; | |
727 | ||
a4063588 | 728 | fprintf_unfiltered (gdb_stdlog, "Passing %d compiler options:\n", argc); |
bb2ec1b3 | 729 | for (argi = 0; argi < argc; argi++) |
a4063588 | 730 | fprintf_unfiltered (gdb_stdlog, "Compiler option %d: <%s>\n", |
bb2ec1b3 TT |
731 | argi, argv[argi]); |
732 | } | |
733 | ||
aaee65ae | 734 | compile_file_names fnames = get_new_file_names (); |
bb2ec1b3 | 735 | |
b80cf838 TT |
736 | gdb::optional<gdb::unlinker> source_remover; |
737 | ||
d419f42d TT |
738 | { |
739 | gdb_file_up src = gdb_fopen_cloexec (fnames.source_file (), "w"); | |
740 | if (src == NULL) | |
741 | perror_with_name (_("Could not open source file for writing")); | |
b80cf838 TT |
742 | |
743 | source_remover.emplace (fnames.source_file ()); | |
744 | ||
d419f42d TT |
745 | if (fputs (code.c_str (), src.get ()) == EOF) |
746 | perror_with_name (_("Could not write to source file")); | |
747 | } | |
bb2ec1b3 TT |
748 | |
749 | if (compile_debug) | |
a4063588 | 750 | fprintf_unfiltered (gdb_stdlog, "source file produced: %s\n\n", |
aaee65ae | 751 | fnames.source_file ()); |
bb2ec1b3 TT |
752 | |
753 | /* Call the compiler and start the compilation process. */ | |
9cdfd9a2 KS |
754 | compiler->set_source_file (fnames.source_file ()); |
755 | ok = compiler->compile (fnames.object_file (), compile_debug); | |
e68c32d5 | 756 | if (!ok) |
bb2ec1b3 TT |
757 | error (_("Compilation failed.")); |
758 | ||
759 | if (compile_debug) | |
a4063588 | 760 | fprintf_unfiltered (gdb_stdlog, "object file produced: %s\n\n", |
aaee65ae | 761 | fnames.object_file ()); |
bb2ec1b3 | 762 | |
b80cf838 TT |
763 | /* Keep the source file. */ |
764 | source_remover->keep (); | |
aaee65ae | 765 | return fnames; |
bb2ec1b3 TT |
766 | } |
767 | ||
768 | /* The "compile" prefix command. */ | |
769 | ||
770 | static void | |
981a3fb3 | 771 | compile_command (const char *args, int from_tty) |
bb2ec1b3 TT |
772 | { |
773 | /* If a sub-command is not specified to the compile prefix command, | |
774 | assume it is a direct code compilation. */ | |
775 | compile_code_command (args, from_tty); | |
776 | } | |
777 | ||
778 | /* See compile.h. */ | |
779 | ||
780 | void | |
851c9091 | 781 | eval_compile_command (struct command_line *cmd, const char *cmd_string, |
5c65b58a | 782 | enum compile_i_scope_types scope, void *scope_data) |
bb2ec1b3 | 783 | { |
aaee65ae PA |
784 | struct compile_module *compile_module; |
785 | ||
786 | compile_file_names fnames = compile_to_object (cmd, cmd_string, scope); | |
bb2ec1b3 | 787 | |
b80cf838 TT |
788 | gdb::unlinker object_remover (fnames.object_file ()); |
789 | gdb::unlinker source_remover (fnames.source_file ()); | |
790 | ||
aaee65ae PA |
791 | compile_module = compile_object_load (fnames, scope, scope_data); |
792 | if (compile_module == NULL) | |
bb2ec1b3 | 793 | { |
aaee65ae PA |
794 | gdb_assert (scope == COMPILE_I_PRINT_ADDRESS_SCOPE); |
795 | eval_compile_command (cmd, cmd_string, | |
796 | COMPILE_I_PRINT_VALUE_SCOPE, scope_data); | |
797 | return; | |
bb2ec1b3 | 798 | } |
b80cf838 TT |
799 | |
800 | /* Keep the files. */ | |
801 | source_remover.keep (); | |
802 | object_remover.keep (); | |
803 | ||
aaee65ae | 804 | compile_object_run (compile_module); |
bb2ec1b3 TT |
805 | } |
806 | ||
807 | /* See compile/compile-internal.h. */ | |
808 | ||
8f84fb0e | 809 | std::string |
bb2ec1b3 TT |
810 | compile_register_name_mangled (struct gdbarch *gdbarch, int regnum) |
811 | { | |
812 | const char *regname = gdbarch_register_name (gdbarch, regnum); | |
813 | ||
8f84fb0e | 814 | return string_printf ("__%s", regname); |
bb2ec1b3 TT |
815 | } |
816 | ||
817 | /* See compile/compile-internal.h. */ | |
818 | ||
819 | int | |
820 | compile_register_name_demangle (struct gdbarch *gdbarch, | |
821 | const char *regname) | |
822 | { | |
823 | int regnum; | |
824 | ||
825 | if (regname[0] != '_' || regname[1] != '_') | |
826 | error (_("Invalid register name \"%s\"."), regname); | |
827 | regname += 2; | |
828 | ||
829 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) | |
830 | if (strcmp (regname, gdbarch_register_name (gdbarch, regnum)) == 0) | |
831 | return regnum; | |
832 | ||
833 | error (_("Cannot find gdbarch register \"%s\"."), regname); | |
834 | } | |
835 | ||
9cdfd9a2 KS |
836 | /* Forwards to the plug-in. */ |
837 | ||
838 | #define FORWARD(OP,...) (m_gcc_fe->ops->OP (m_gcc_fe, ##__VA_ARGS__)) | |
839 | ||
840 | /* See compile-internal.h. */ | |
841 | ||
842 | void | |
843 | compile_instance::set_print_callback | |
844 | (void (*print_function) (void *, const char *), void *datum) | |
845 | { | |
846 | FORWARD (set_print_callback, print_function, datum); | |
847 | } | |
848 | ||
849 | /* See compile-internal.h. */ | |
850 | ||
851 | unsigned int | |
852 | compile_instance::version () const | |
853 | { | |
854 | return m_gcc_fe->ops->version; | |
855 | } | |
856 | ||
857 | /* See compile-internal.h. */ | |
858 | ||
859 | void | |
860 | compile_instance::set_verbose (int level) | |
861 | { | |
862 | if (version () >= GCC_FE_VERSION_1) | |
863 | FORWARD (set_verbose, level); | |
864 | } | |
865 | ||
866 | /* See compile-internal.h. */ | |
867 | ||
868 | void | |
869 | compile_instance::set_driver_filename (const char *filename) | |
870 | { | |
871 | if (version () >= GCC_FE_VERSION_1) | |
872 | FORWARD (set_driver_filename, filename); | |
873 | } | |
874 | ||
875 | /* See compile-internal.h. */ | |
876 | ||
877 | void | |
878 | compile_instance::set_triplet_regexp (const char *regexp) | |
879 | { | |
880 | if (version () >= GCC_FE_VERSION_1) | |
881 | FORWARD (set_triplet_regexp, regexp); | |
882 | } | |
883 | ||
884 | /* See compile-internal.h. */ | |
885 | ||
886 | char * | |
887 | compile_instance::set_arguments (int argc, char **argv, const char *regexp) | |
888 | { | |
889 | if (version () >= GCC_FE_VERSION_1) | |
890 | return FORWARD (set_arguments, argc, argv); | |
891 | else | |
892 | return FORWARD (set_arguments_v0, regexp, argc, argv); | |
893 | } | |
894 | ||
895 | /* See compile-internal.h. */ | |
896 | ||
897 | void | |
898 | compile_instance::set_source_file (const char *filename) | |
899 | { | |
900 | FORWARD (set_source_file, filename); | |
901 | } | |
902 | ||
903 | /* See compile-internal.h. */ | |
904 | ||
905 | bool | |
906 | compile_instance::compile (const char *filename, int verbose_level) | |
907 | { | |
908 | if (version () >= GCC_FE_VERSION_1) | |
909 | return FORWARD (compile, filename); | |
910 | else | |
911 | return FORWARD (compile_v0, filename, verbose_level); | |
912 | } | |
913 | ||
914 | #undef FORWARD | |
915 | ||
8588b356 SM |
916 | /* See compile.h. */ |
917 | cmd_list_element *compile_cmd_element = nullptr; | |
9cdfd9a2 | 918 | |
bb2ec1b3 TT |
919 | void |
920 | _initialize_compile (void) | |
921 | { | |
922 | struct cmd_list_element *c = NULL; | |
923 | ||
8588b356 SM |
924 | compile_cmd_element = add_prefix_cmd ("compile", class_obscure, |
925 | compile_command, _("\ | |
bb2ec1b3 TT |
926 | Command to compile source code and inject it into the inferior."), |
927 | &compile_command_list, "compile ", 1, &cmdlist); | |
928 | add_com_alias ("expression", "compile", class_obscure, 0); | |
929 | ||
930 | add_cmd ("code", class_obscure, compile_code_command, | |
931 | _("\ | |
932 | Compile, inject, and execute code.\n\ | |
933 | \n\ | |
934 | Usage: compile code [-r|-raw] [--] [CODE]\n\ | |
935 | -r|-raw: Suppress automatic 'void _gdb_expr () { CODE }' wrapping.\n\ | |
936 | --: Do not parse any options beyond this delimiter. All text to the\n\ | |
937 | right will be treated as source code.\n\ | |
938 | \n\ | |
939 | The source code may be specified as a simple one line expression, e.g.:\n\ | |
940 | \n\ | |
941 | compile code printf(\"Hello world\\n\");\n\ | |
942 | \n\ | |
36de76f9 JK |
943 | Alternatively, you can type a multiline expression by invoking\n\ |
944 | this command with no argument. GDB will then prompt for the\n\ | |
945 | expression interactively; type a line containing \"end\" to\n\ | |
946 | indicate the end of the expression."), | |
bb2ec1b3 TT |
947 | &compile_command_list); |
948 | ||
949 | c = add_cmd ("file", class_obscure, compile_file_command, | |
950 | _("\ | |
951 | Evaluate a file containing source code.\n\ | |
952 | \n\ | |
48c5e7e2 | 953 | Usage: compile file [-r|-raw] [FILENAME]\n\ |
bb2ec1b3 TT |
954 | -r|-raw: Suppress automatic 'void _gdb_expr () { CODE }' wrapping."), |
955 | &compile_command_list); | |
956 | set_cmd_completer (c, filename_completer); | |
957 | ||
7d8062de PA |
958 | const auto compile_print_opts = make_value_print_options_def_group (nullptr); |
959 | ||
960 | static const std::string compile_print_help | |
961 | = gdb::option::build_help (N_("\ | |
36de76f9 JK |
962 | Evaluate EXPR by using the compiler and print result.\n\ |
963 | \n\ | |
7d8062de PA |
964 | Usage: compile print [[OPTION]... --] [/FMT] [EXPR]\n\ |
965 | \n\ | |
966 | Options:\n\ | |
967 | %OPTIONS%\ | |
968 | Note: because this command accepts arbitrary expressions, if you\n\ | |
969 | specify any command option, you must use a double dash (\"--\")\n\ | |
970 | to mark the end of option processing. E.g.: \"compile print -o -- myobj\".\n\ | |
36de76f9 JK |
971 | \n\ |
972 | The expression may be specified on the same line as the command, e.g.:\n\ | |
973 | \n\ | |
974 | compile print i\n\ | |
975 | \n\ | |
976 | Alternatively, you can type a multiline expression by invoking\n\ | |
977 | this command with no argument. GDB will then prompt for the\n\ | |
978 | expression interactively; type a line containing \"end\" to\n\ | |
979 | indicate the end of the expression.\n\ | |
980 | \n\ | |
981 | EXPR may be preceded with /FMT, where FMT is a format letter\n\ | |
982 | but no count or size letter (see \"x\" command)."), | |
7d8062de PA |
983 | compile_print_opts); |
984 | ||
985 | c = add_cmd ("print", class_obscure, compile_print_command, | |
986 | compile_print_help.c_str (), | |
987 | &compile_command_list); | |
988 | set_cmd_completer_handle_brkchars (c, print_command_completer); | |
36de76f9 | 989 | |
bb2ec1b3 TT |
990 | add_setshow_boolean_cmd ("compile", class_maintenance, &compile_debug, _("\ |
991 | Set compile command debugging."), _("\ | |
992 | Show compile command debugging."), _("\ | |
993 | When on, compile command debugging is enabled."), | |
994 | NULL, show_compile_debug, | |
995 | &setdebuglist, &showdebuglist); | |
996 | ||
997 | add_setshow_string_cmd ("compile-args", class_support, | |
998 | &compile_args, | |
999 | _("Set compile command GCC command-line arguments"), | |
1000 | _("Show compile command GCC command-line arguments"), | |
1001 | _("\ | |
1002 | Use options like -I (include file directory) or ABI settings.\n\ | |
1003 | String quoting is parsed like in shell, for example:\n\ | |
1004 | -mno-align-double \"-I/dir with a space/include\""), | |
1005 | set_compile_args, show_compile_args, &setlist, &showlist); | |
1006 | ||
1007 | /* Override flags possibly coming from DW_AT_producer. */ | |
1008 | compile_args = xstrdup ("-O0 -gdwarf-4" | |
4b62a76e | 1009 | /* We use -fPIE Otherwise GDB would need to reserve space large enough for |
bb2ec1b3 TT |
1010 | any object file in the inferior in advance to get the final address when |
1011 | to link the object file to and additionally the default system linker | |
1012 | script would need to be modified so that one can specify there the | |
4b62a76e JK |
1013 | absolute target address. |
1014 | -fPIC is not used at is would require from GDB to generate .got. */ | |
1015 | " -fPIE" | |
3a9558c4 JK |
1016 | /* We want warnings, except for some commonly happening for GDB commands. */ |
1017 | " -Wall " | |
3a9558c4 JK |
1018 | " -Wno-unused-but-set-variable" |
1019 | " -Wno-unused-variable" | |
bb2ec1b3 TT |
1020 | /* Override CU's possible -fstack-protector-strong. */ |
1021 | " -fno-stack-protector" | |
1022 | ); | |
1023 | set_compile_args (compile_args, 0, NULL); | |
6e41ddec JK |
1024 | |
1025 | add_setshow_optional_filename_cmd ("compile-gcc", class_support, | |
1026 | &compile_gcc, | |
1027 | _("Set compile command " | |
1028 | "GCC driver filename"), | |
1029 | _("Show compile command " | |
1030 | "GCC driver filename"), | |
1031 | _("\ | |
1032 | It should be absolute filename of the gcc executable.\n\ | |
1033 | If empty the default target triplet will be searched in $PATH."), | |
1034 | NULL, show_compile_gcc, &setlist, | |
1035 | &showlist); | |
1036 | compile_gcc = xstrdup (""); | |
bb2ec1b3 | 1037 | } |