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bb2ec1b3 TT |
1 | /* General Compile and inject code |
2 | ||
32d0add0 | 3 | Copyright (C) 2014-2015 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" | |
21 | #include "interps.h" | |
22 | #include "ui-out.h" | |
23 | #include "command.h" | |
24 | #include "cli/cli-script.h" | |
25 | #include "cli/cli-utils.h" | |
26 | #include "completer.h" | |
27 | #include "gdbcmd.h" | |
28 | #include "compile.h" | |
29 | #include "compile-internal.h" | |
30 | #include "compile-object-load.h" | |
31 | #include "compile-object-run.h" | |
32 | #include "language.h" | |
33 | #include "frame.h" | |
34 | #include "source.h" | |
35 | #include "block.h" | |
36 | #include "arch-utils.h" | |
37 | #include "filestuff.h" | |
38 | #include "target.h" | |
39 | #include "osabi.h" | |
3ce348af | 40 | #include "gdb_wait.h" |
bb2ec1b3 TT |
41 | |
42 | \f | |
43 | ||
44 | /* Initial filename for temporary files. */ | |
45 | ||
46 | #define TMP_PREFIX "/tmp/gdbobj-" | |
47 | ||
48 | /* Hold "compile" commands. */ | |
49 | ||
50 | static struct cmd_list_element *compile_command_list; | |
51 | ||
52 | /* Debug flag for "compile" commands. */ | |
53 | ||
54 | int compile_debug; | |
55 | ||
56 | /* Implement "show debug compile". */ | |
57 | ||
58 | static void | |
59 | show_compile_debug (struct ui_file *file, int from_tty, | |
60 | struct cmd_list_element *c, const char *value) | |
61 | { | |
62 | fprintf_filtered (file, _("Compile debugging is %s.\n"), value); | |
63 | } | |
64 | ||
65 | \f | |
66 | ||
67 | /* Check *ARG for a "-raw" or "-r" argument. Return 0 if not seen. | |
68 | Return 1 if seen and update *ARG. */ | |
69 | ||
70 | static int | |
71 | check_raw_argument (char **arg) | |
72 | { | |
73 | *arg = skip_spaces (*arg); | |
74 | ||
75 | if (arg != NULL | |
76 | && (check_for_argument (arg, "-raw", sizeof ("-raw") - 1) | |
77 | || check_for_argument (arg, "-r", sizeof ("-r") - 1))) | |
78 | return 1; | |
79 | return 0; | |
80 | } | |
81 | ||
82 | /* Handle the input from the 'compile file' command. The "compile | |
83 | file" command is used to evaluate an expression contained in a file | |
84 | that may contain calls to the GCC compiler. */ | |
85 | ||
86 | static void | |
87 | compile_file_command (char *arg, int from_tty) | |
88 | { | |
89 | enum compile_i_scope_types scope = COMPILE_I_SIMPLE_SCOPE; | |
90 | char *buffer; | |
91 | struct cleanup *cleanup; | |
92 | ||
93 | cleanup = make_cleanup_restore_integer (&interpreter_async); | |
94 | interpreter_async = 0; | |
95 | ||
96 | /* Check the user did not just <enter> after command. */ | |
97 | if (arg == NULL) | |
98 | error (_("You must provide a filename for this command.")); | |
99 | ||
100 | /* Check if a raw (-r|-raw) argument is provided. */ | |
101 | if (arg != NULL && check_raw_argument (&arg)) | |
102 | { | |
103 | scope = COMPILE_I_RAW_SCOPE; | |
104 | arg = skip_spaces (arg); | |
105 | } | |
106 | ||
107 | /* After processing arguments, check there is a filename at the end | |
108 | of the command. */ | |
109 | if (arg[0] == '\0') | |
110 | error (_("You must provide a filename with the raw option set.")); | |
111 | ||
112 | if (arg[0] == '-') | |
113 | error (_("Unknown argument specified.")); | |
114 | ||
115 | arg = skip_spaces (arg); | |
116 | arg = gdb_abspath (arg); | |
117 | make_cleanup (xfree, arg); | |
118 | buffer = xstrprintf ("#include \"%s\"\n", arg); | |
119 | make_cleanup (xfree, buffer); | |
120 | eval_compile_command (NULL, buffer, scope); | |
121 | do_cleanups (cleanup); | |
122 | } | |
123 | ||
124 | /* Handle the input from the 'compile code' command. The | |
125 | "compile code" command is used to evaluate an expression that may | |
126 | contain calls to the GCC compiler. The language expected in this | |
127 | compile command is the language currently set in GDB. */ | |
128 | ||
129 | static void | |
130 | compile_code_command (char *arg, int from_tty) | |
131 | { | |
132 | struct cleanup *cleanup; | |
133 | enum compile_i_scope_types scope = COMPILE_I_SIMPLE_SCOPE; | |
134 | ||
135 | cleanup = make_cleanup_restore_integer (&interpreter_async); | |
136 | interpreter_async = 0; | |
137 | ||
138 | if (arg != NULL && check_raw_argument (&arg)) | |
139 | { | |
140 | scope = COMPILE_I_RAW_SCOPE; | |
141 | arg = skip_spaces (arg); | |
142 | } | |
143 | ||
144 | arg = skip_spaces (arg); | |
145 | ||
146 | if (arg != NULL && !check_for_argument (&arg, "--", sizeof ("--") - 1)) | |
147 | { | |
148 | if (arg[0] == '-') | |
149 | error (_("Unknown argument specified.")); | |
150 | } | |
151 | ||
152 | if (arg && *arg) | |
153 | eval_compile_command (NULL, arg, scope); | |
154 | else | |
155 | { | |
156 | struct command_line *l = get_command_line (compile_control, ""); | |
157 | ||
158 | make_cleanup_free_command_lines (&l); | |
159 | l->control_u.compile.scope = scope; | |
160 | execute_control_command_untraced (l); | |
161 | } | |
162 | ||
163 | do_cleanups (cleanup); | |
164 | } | |
165 | ||
166 | /* A cleanup function to remove a directory and all its contents. */ | |
167 | ||
168 | static void | |
169 | do_rmdir (void *arg) | |
170 | { | |
171 | const char *dir = arg; | |
172 | char *zap; | |
3ce348af CG |
173 | int wstat; |
174 | ||
bb2ec1b3 TT |
175 | gdb_assert (strncmp (dir, TMP_PREFIX, strlen (TMP_PREFIX)) == 0); |
176 | zap = concat ("rm -rf ", dir, (char *) NULL); | |
3ce348af CG |
177 | wstat = system (zap); |
178 | if (wstat == -1 || !WIFEXITED (wstat) || WEXITSTATUS (wstat) != 0) | |
179 | warning (_("Could not remove temporary directory %s"), dir); | |
180 | XDELETEVEC (zap); | |
bb2ec1b3 TT |
181 | } |
182 | ||
183 | /* Return the name of the temporary directory to use for .o files, and | |
184 | arrange for the directory to be removed at shutdown. */ | |
185 | ||
186 | static const char * | |
187 | get_compile_file_tempdir (void) | |
188 | { | |
189 | static char *tempdir_name; | |
190 | ||
191 | #define TEMPLATE TMP_PREFIX "XXXXXX" | |
192 | char tname[sizeof (TEMPLATE)]; | |
193 | ||
194 | if (tempdir_name != NULL) | |
195 | return tempdir_name; | |
196 | ||
197 | strcpy (tname, TEMPLATE); | |
198 | #undef TEMPLATE | |
1bc1068a | 199 | #ifdef HAVE_MKDTEMP |
bb2ec1b3 | 200 | tempdir_name = mkdtemp (tname); |
1bc1068a JK |
201 | #else |
202 | error (_("Command not supported on this host.")); | |
203 | #endif | |
bb2ec1b3 TT |
204 | if (tempdir_name == NULL) |
205 | perror_with_name (_("Could not make temporary directory")); | |
206 | ||
207 | tempdir_name = xstrdup (tempdir_name); | |
208 | make_final_cleanup (do_rmdir, tempdir_name); | |
209 | return tempdir_name; | |
210 | } | |
211 | ||
212 | /* Compute the names of source and object files to use. The names are | |
213 | allocated by malloc and should be freed by the caller. */ | |
214 | ||
215 | static void | |
216 | get_new_file_names (char **source_file, char **object_file) | |
217 | { | |
218 | static int seq; | |
219 | const char *dir = get_compile_file_tempdir (); | |
220 | ||
221 | ++seq; | |
222 | *source_file = xstrprintf ("%s%sout%d.c", dir, SLASH_STRING, seq); | |
223 | *object_file = xstrprintf ("%s%sout%d.o", dir, SLASH_STRING, seq); | |
224 | } | |
225 | ||
226 | /* Get the block and PC at which to evaluate an expression. */ | |
227 | ||
228 | static const struct block * | |
229 | get_expr_block_and_pc (CORE_ADDR *pc) | |
230 | { | |
231 | const struct block *block = get_selected_block (pc); | |
232 | ||
233 | if (block == NULL) | |
234 | { | |
235 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); | |
236 | ||
237 | if (cursal.symtab) | |
238 | block = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (cursal.symtab), | |
239 | STATIC_BLOCK); | |
240 | if (block != NULL) | |
241 | *pc = BLOCK_START (block); | |
242 | } | |
243 | else | |
244 | *pc = BLOCK_START (block); | |
245 | ||
246 | return block; | |
247 | } | |
248 | ||
249 | /* Call gdb_buildargv, set its result for S into *ARGVP but calculate also the | |
250 | number of parsed arguments into *ARGCP. If gdb_buildargv has returned NULL | |
251 | then *ARGCP is set to zero. */ | |
252 | ||
253 | static void | |
254 | build_argc_argv (const char *s, int *argcp, char ***argvp) | |
255 | { | |
256 | *argvp = gdb_buildargv (s); | |
257 | *argcp = countargv (*argvp); | |
258 | } | |
259 | ||
260 | /* String for 'set compile-args' and 'show compile-args'. */ | |
261 | static char *compile_args; | |
262 | ||
263 | /* Parsed form of COMPILE_ARGS. COMPILE_ARGS_ARGV is NULL terminated. */ | |
264 | static int compile_args_argc; | |
265 | static char **compile_args_argv; | |
266 | ||
267 | /* Implement 'set compile-args'. */ | |
268 | ||
269 | static void | |
270 | set_compile_args (char *args, int from_tty, struct cmd_list_element *c) | |
271 | { | |
272 | freeargv (compile_args_argv); | |
273 | build_argc_argv (compile_args, &compile_args_argc, &compile_args_argv); | |
274 | } | |
275 | ||
276 | /* Implement 'show compile-args'. */ | |
277 | ||
278 | static void | |
279 | show_compile_args (struct ui_file *file, int from_tty, | |
280 | struct cmd_list_element *c, const char *value) | |
281 | { | |
282 | fprintf_filtered (file, _("Compile command command-line arguments " | |
283 | "are \"%s\".\n"), | |
284 | value); | |
285 | } | |
286 | ||
287 | /* Append ARGC and ARGV (as parsed by build_argc_argv) to *ARGCP and *ARGVP. | |
288 | ARGCP+ARGVP can be zero+NULL and also ARGC+ARGV can be zero+NULL. */ | |
289 | ||
290 | static void | |
291 | append_args (int *argcp, char ***argvp, int argc, char **argv) | |
292 | { | |
293 | int argi; | |
294 | ||
295 | *argvp = xrealloc (*argvp, (*argcp + argc + 1) * sizeof (**argvp)); | |
296 | ||
297 | for (argi = 0; argi < argc; argi++) | |
298 | (*argvp)[(*argcp)++] = xstrdup (argv[argi]); | |
299 | (*argvp)[(*argcp)] = NULL; | |
300 | } | |
301 | ||
302 | /* Return DW_AT_producer parsed for get_selected_frame () (if any). | |
303 | Return NULL otherwise. | |
304 | ||
305 | GCC already filters its command-line arguments only for the suitable ones to | |
306 | put into DW_AT_producer - see GCC function gen_producer_string. */ | |
307 | ||
308 | static const char * | |
309 | get_selected_pc_producer_options (void) | |
310 | { | |
311 | CORE_ADDR pc = get_frame_pc (get_selected_frame (NULL)); | |
312 | struct compunit_symtab *symtab = find_pc_compunit_symtab (pc); | |
313 | const char *cs; | |
314 | ||
315 | if (symtab == NULL || symtab->producer == NULL | |
316 | || strncmp (symtab->producer, "GNU ", strlen ("GNU ")) != 0) | |
317 | return NULL; | |
318 | ||
319 | cs = symtab->producer; | |
320 | while (*cs != 0 && *cs != '-') | |
321 | cs = skip_spaces_const (skip_to_space_const (cs)); | |
322 | if (*cs != '-') | |
323 | return NULL; | |
324 | return cs; | |
325 | } | |
326 | ||
327 | /* Produce final vector of GCC compilation options. First element is target | |
328 | size ("-m64", "-m32" etc.), optionally followed by DW_AT_producer options | |
329 | and then compile-args string GDB variable. */ | |
330 | ||
331 | static void | |
332 | get_args (const struct compile_instance *compiler, struct gdbarch *gdbarch, | |
333 | int *argcp, char ***argvp) | |
334 | { | |
335 | const char *cs_producer_options; | |
336 | int argc_compiler; | |
337 | char **argv_compiler; | |
338 | ||
339 | build_argc_argv (gdbarch_gcc_target_options (gdbarch), | |
340 | argcp, argvp); | |
341 | ||
342 | cs_producer_options = get_selected_pc_producer_options (); | |
343 | if (cs_producer_options != NULL) | |
344 | { | |
345 | int argc_producer; | |
346 | char **argv_producer; | |
347 | ||
348 | build_argc_argv (cs_producer_options, &argc_producer, &argv_producer); | |
349 | append_args (argcp, argvp, argc_producer, argv_producer); | |
350 | freeargv (argv_producer); | |
351 | } | |
352 | ||
353 | build_argc_argv (compiler->gcc_target_options, | |
354 | &argc_compiler, &argv_compiler); | |
355 | append_args (argcp, argvp, argc_compiler, argv_compiler); | |
356 | freeargv (argv_compiler); | |
357 | ||
358 | append_args (argcp, argvp, compile_args_argc, compile_args_argv); | |
359 | } | |
360 | ||
361 | /* A cleanup function to destroy a gdb_gcc_instance. */ | |
362 | ||
363 | static void | |
364 | cleanup_compile_instance (void *arg) | |
365 | { | |
366 | struct compile_instance *inst = arg; | |
367 | ||
368 | inst->destroy (inst); | |
369 | } | |
370 | ||
371 | /* A cleanup function to unlink a file. */ | |
372 | ||
373 | static void | |
374 | cleanup_unlink_file (void *arg) | |
375 | { | |
376 | const char *filename = arg; | |
377 | ||
378 | unlink (filename); | |
379 | } | |
380 | ||
381 | /* A helper function suitable for use as the "print_callback" in the | |
382 | compiler object. */ | |
383 | ||
384 | static void | |
385 | print_callback (void *ignore, const char *message) | |
386 | { | |
387 | fputs_filtered (message, gdb_stderr); | |
388 | } | |
389 | ||
390 | /* Process the compilation request. On success it returns the object | |
391 | file name and *SOURCE_FILEP is set to source file name. On an | |
392 | error condition, error () is called. The caller is responsible for | |
393 | freeing both strings. */ | |
394 | ||
395 | static char * | |
396 | compile_to_object (struct command_line *cmd, char *cmd_string, | |
397 | enum compile_i_scope_types scope, | |
398 | char **source_filep) | |
399 | { | |
400 | char *code; | |
401 | char *source_file, *object_file; | |
402 | struct compile_instance *compiler; | |
403 | struct cleanup *cleanup, *inner_cleanup; | |
404 | const struct block *expr_block; | |
405 | CORE_ADDR trash_pc, expr_pc; | |
406 | int argc; | |
407 | char **argv; | |
408 | int ok; | |
409 | FILE *src; | |
410 | struct gdbarch *gdbarch = get_current_arch (); | |
411 | const char *os_rx; | |
412 | const char *arch_rx; | |
413 | char *triplet_rx; | |
414 | char *error_message; | |
415 | ||
416 | if (!target_has_execution) | |
417 | error (_("The program must be running for the compile command to "\ | |
418 | "work.")); | |
419 | ||
420 | expr_block = get_expr_block_and_pc (&trash_pc); | |
421 | expr_pc = get_frame_address_in_block (get_selected_frame (NULL)); | |
422 | ||
423 | /* Set up instance and context for the compiler. */ | |
424 | if (current_language->la_get_compile_instance == NULL) | |
425 | error (_("No compiler support for this language.")); | |
426 | compiler = current_language->la_get_compile_instance (); | |
427 | cleanup = make_cleanup (cleanup_compile_instance, compiler); | |
428 | ||
429 | compiler->fe->ops->set_print_callback (compiler->fe, print_callback, NULL); | |
430 | ||
431 | compiler->scope = scope; | |
432 | compiler->block = expr_block; | |
433 | ||
434 | /* From the provided expression, build a scope to pass to the | |
435 | compiler. */ | |
436 | if (cmd != NULL) | |
437 | { | |
438 | struct ui_file *stream = mem_fileopen (); | |
439 | struct command_line *iter; | |
440 | ||
441 | make_cleanup_ui_file_delete (stream); | |
442 | for (iter = cmd->body_list[0]; iter; iter = iter->next) | |
443 | { | |
444 | fputs_unfiltered (iter->line, stream); | |
445 | fputs_unfiltered ("\n", stream); | |
446 | } | |
447 | ||
448 | code = ui_file_xstrdup (stream, NULL); | |
449 | make_cleanup (xfree, code); | |
450 | } | |
451 | else if (cmd_string != NULL) | |
452 | code = cmd_string; | |
453 | else | |
454 | error (_("Neither a simple expression, or a multi-line specified.")); | |
455 | ||
456 | code = current_language->la_compute_program (compiler, code, gdbarch, | |
457 | expr_block, expr_pc); | |
458 | make_cleanup (xfree, code); | |
459 | if (compile_debug) | |
460 | fprintf_unfiltered (gdb_stdout, "debug output:\n\n%s", code); | |
461 | ||
462 | os_rx = osabi_triplet_regexp (gdbarch_osabi (gdbarch)); | |
463 | arch_rx = gdbarch_gnu_triplet_regexp (gdbarch); | |
464 | triplet_rx = concat (arch_rx, "-[^-]*-", os_rx, (char *) NULL); | |
465 | make_cleanup (xfree, triplet_rx); | |
466 | ||
467 | /* Set compiler command-line arguments. */ | |
468 | get_args (compiler, gdbarch, &argc, &argv); | |
469 | make_cleanup_freeargv (argv); | |
470 | ||
471 | error_message = compiler->fe->ops->set_arguments (compiler->fe, triplet_rx, | |
472 | argc, argv); | |
473 | if (error_message != NULL) | |
474 | { | |
475 | make_cleanup (xfree, error_message); | |
476 | error ("%s", error_message); | |
477 | } | |
478 | ||
479 | if (compile_debug) | |
480 | { | |
481 | int argi; | |
482 | ||
483 | fprintf_unfiltered (gdb_stdout, "Passing %d compiler options:\n", argc); | |
484 | for (argi = 0; argi < argc; argi++) | |
485 | fprintf_unfiltered (gdb_stdout, "Compiler option %d: <%s>\n", | |
486 | argi, argv[argi]); | |
487 | } | |
488 | ||
489 | get_new_file_names (&source_file, &object_file); | |
490 | inner_cleanup = make_cleanup (xfree, source_file); | |
491 | make_cleanup (xfree, object_file); | |
492 | ||
493 | src = gdb_fopen_cloexec (source_file, "w"); | |
494 | if (src == NULL) | |
495 | perror_with_name (_("Could not open source file for writing")); | |
496 | make_cleanup (cleanup_unlink_file, source_file); | |
497 | if (fputs (code, src) == EOF) | |
498 | perror_with_name (_("Could not write to source file")); | |
499 | fclose (src); | |
500 | ||
501 | if (compile_debug) | |
502 | fprintf_unfiltered (gdb_stdout, "source file produced: %s\n\n", | |
503 | source_file); | |
504 | ||
505 | /* Call the compiler and start the compilation process. */ | |
506 | compiler->fe->ops->set_source_file (compiler->fe, source_file); | |
507 | ||
508 | if (!compiler->fe->ops->compile (compiler->fe, object_file, | |
509 | compile_debug)) | |
510 | error (_("Compilation failed.")); | |
511 | ||
512 | if (compile_debug) | |
513 | fprintf_unfiltered (gdb_stdout, "object file produced: %s\n\n", | |
514 | object_file); | |
515 | ||
516 | discard_cleanups (inner_cleanup); | |
517 | do_cleanups (cleanup); | |
518 | *source_filep = source_file; | |
519 | return object_file; | |
520 | } | |
521 | ||
522 | /* The "compile" prefix command. */ | |
523 | ||
524 | static void | |
525 | compile_command (char *args, int from_tty) | |
526 | { | |
527 | /* If a sub-command is not specified to the compile prefix command, | |
528 | assume it is a direct code compilation. */ | |
529 | compile_code_command (args, from_tty); | |
530 | } | |
531 | ||
532 | /* See compile.h. */ | |
533 | ||
534 | void | |
535 | eval_compile_command (struct command_line *cmd, char *cmd_string, | |
536 | enum compile_i_scope_types scope) | |
537 | { | |
538 | char *object_file, *source_file; | |
539 | ||
540 | object_file = compile_to_object (cmd, cmd_string, scope, &source_file); | |
541 | if (object_file != NULL) | |
542 | { | |
543 | struct cleanup *cleanup_xfree, *cleanup_unlink; | |
544 | struct compile_module *compile_module; | |
545 | ||
546 | cleanup_xfree = make_cleanup (xfree, object_file); | |
547 | make_cleanup (xfree, source_file); | |
548 | cleanup_unlink = make_cleanup (cleanup_unlink_file, object_file); | |
549 | make_cleanup (cleanup_unlink_file, source_file); | |
550 | compile_module = compile_object_load (object_file, source_file); | |
551 | discard_cleanups (cleanup_unlink); | |
552 | do_cleanups (cleanup_xfree); | |
553 | compile_object_run (compile_module); | |
554 | } | |
555 | } | |
556 | ||
557 | /* See compile/compile-internal.h. */ | |
558 | ||
559 | char * | |
560 | compile_register_name_mangled (struct gdbarch *gdbarch, int regnum) | |
561 | { | |
562 | const char *regname = gdbarch_register_name (gdbarch, regnum); | |
563 | ||
564 | return xstrprintf ("__%s", regname); | |
565 | } | |
566 | ||
567 | /* See compile/compile-internal.h. */ | |
568 | ||
569 | int | |
570 | compile_register_name_demangle (struct gdbarch *gdbarch, | |
571 | const char *regname) | |
572 | { | |
573 | int regnum; | |
574 | ||
575 | if (regname[0] != '_' || regname[1] != '_') | |
576 | error (_("Invalid register name \"%s\"."), regname); | |
577 | regname += 2; | |
578 | ||
579 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) | |
580 | if (strcmp (regname, gdbarch_register_name (gdbarch, regnum)) == 0) | |
581 | return regnum; | |
582 | ||
583 | error (_("Cannot find gdbarch register \"%s\"."), regname); | |
584 | } | |
585 | ||
586 | extern initialize_file_ftype _initialize_compile; | |
587 | ||
588 | void | |
589 | _initialize_compile (void) | |
590 | { | |
591 | struct cmd_list_element *c = NULL; | |
592 | ||
593 | add_prefix_cmd ("compile", class_obscure, compile_command, | |
594 | _("\ | |
595 | Command to compile source code and inject it into the inferior."), | |
596 | &compile_command_list, "compile ", 1, &cmdlist); | |
597 | add_com_alias ("expression", "compile", class_obscure, 0); | |
598 | ||
599 | add_cmd ("code", class_obscure, compile_code_command, | |
600 | _("\ | |
601 | Compile, inject, and execute code.\n\ | |
602 | \n\ | |
603 | Usage: compile code [-r|-raw] [--] [CODE]\n\ | |
604 | -r|-raw: Suppress automatic 'void _gdb_expr () { CODE }' wrapping.\n\ | |
605 | --: Do not parse any options beyond this delimiter. All text to the\n\ | |
606 | right will be treated as source code.\n\ | |
607 | \n\ | |
608 | The source code may be specified as a simple one line expression, e.g.:\n\ | |
609 | \n\ | |
610 | compile code printf(\"Hello world\\n\");\n\ | |
611 | \n\ | |
612 | Alternatively, you can type the source code interactively.\n\ | |
613 | You can invoke this mode when no argument is given to the command\n\ | |
614 | (i.e.,\"compile code\" is typed with nothing after it). An\n\ | |
615 | interactive prompt will be shown allowing you to enter multiple\n\ | |
616 | lines of source code. Type a line containing \"end\" to indicate\n\ | |
617 | the end of the source code."), | |
618 | &compile_command_list); | |
619 | ||
620 | c = add_cmd ("file", class_obscure, compile_file_command, | |
621 | _("\ | |
622 | Evaluate a file containing source code.\n\ | |
623 | \n\ | |
624 | Usage: compile file [-r|-raw] [filename]\n\ | |
625 | -r|-raw: Suppress automatic 'void _gdb_expr () { CODE }' wrapping."), | |
626 | &compile_command_list); | |
627 | set_cmd_completer (c, filename_completer); | |
628 | ||
629 | add_setshow_boolean_cmd ("compile", class_maintenance, &compile_debug, _("\ | |
630 | Set compile command debugging."), _("\ | |
631 | Show compile command debugging."), _("\ | |
632 | When on, compile command debugging is enabled."), | |
633 | NULL, show_compile_debug, | |
634 | &setdebuglist, &showdebuglist); | |
635 | ||
636 | add_setshow_string_cmd ("compile-args", class_support, | |
637 | &compile_args, | |
638 | _("Set compile command GCC command-line arguments"), | |
639 | _("Show compile command GCC command-line arguments"), | |
640 | _("\ | |
641 | Use options like -I (include file directory) or ABI settings.\n\ | |
642 | String quoting is parsed like in shell, for example:\n\ | |
643 | -mno-align-double \"-I/dir with a space/include\""), | |
644 | set_compile_args, show_compile_args, &setlist, &showlist); | |
645 | ||
646 | /* Override flags possibly coming from DW_AT_producer. */ | |
647 | compile_args = xstrdup ("-O0 -gdwarf-4" | |
4b62a76e | 648 | /* We use -fPIE Otherwise GDB would need to reserve space large enough for |
bb2ec1b3 TT |
649 | any object file in the inferior in advance to get the final address when |
650 | to link the object file to and additionally the default system linker | |
651 | script would need to be modified so that one can specify there the | |
4b62a76e JK |
652 | absolute target address. |
653 | -fPIC is not used at is would require from GDB to generate .got. */ | |
654 | " -fPIE" | |
bb2ec1b3 TT |
655 | /* We don't want warnings. */ |
656 | " -w" | |
657 | /* Override CU's possible -fstack-protector-strong. */ | |
658 | " -fno-stack-protector" | |
659 | ); | |
660 | set_compile_args (compile_args, 0, NULL); | |
661 | } |