Commit | Line | Data |
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bb2ec1b3 TT |
1 | /* General Compile and inject code |
2 | ||
618f726f | 3 | Copyright (C) 2014-2016 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" | |
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" |
36de76f9 | 41 | #include "valprint.h" |
bb2ec1b3 TT |
42 | |
43 | \f | |
44 | ||
45 | /* Initial filename for temporary files. */ | |
46 | ||
47 | #define TMP_PREFIX "/tmp/gdbobj-" | |
48 | ||
49 | /* Hold "compile" commands. */ | |
50 | ||
51 | static struct cmd_list_element *compile_command_list; | |
52 | ||
53 | /* Debug flag for "compile" commands. */ | |
54 | ||
55 | int compile_debug; | |
56 | ||
57 | /* Implement "show debug compile". */ | |
58 | ||
59 | static void | |
60 | show_compile_debug (struct ui_file *file, int from_tty, | |
61 | struct cmd_list_element *c, const char *value) | |
62 | { | |
63 | fprintf_filtered (file, _("Compile debugging is %s.\n"), value); | |
64 | } | |
65 | ||
66 | \f | |
67 | ||
68 | /* Check *ARG for a "-raw" or "-r" argument. Return 0 if not seen. | |
69 | Return 1 if seen and update *ARG. */ | |
70 | ||
71 | static int | |
72 | check_raw_argument (char **arg) | |
73 | { | |
74 | *arg = skip_spaces (*arg); | |
75 | ||
76 | if (arg != NULL | |
77 | && (check_for_argument (arg, "-raw", sizeof ("-raw") - 1) | |
78 | || check_for_argument (arg, "-r", sizeof ("-r") - 1))) | |
79 | return 1; | |
80 | return 0; | |
81 | } | |
82 | ||
83 | /* Handle the input from the 'compile file' command. The "compile | |
84 | file" command is used to evaluate an expression contained in a file | |
85 | that may contain calls to the GCC compiler. */ | |
86 | ||
87 | static void | |
88 | compile_file_command (char *arg, int from_tty) | |
89 | { | |
90 | enum compile_i_scope_types scope = COMPILE_I_SIMPLE_SCOPE; | |
91 | char *buffer; | |
92 | struct cleanup *cleanup; | |
93 | ||
cb814510 PA |
94 | cleanup = make_cleanup_restore_integer (¤t_ui->async); |
95 | current_ui->async = 0; | |
bb2ec1b3 TT |
96 | |
97 | /* Check the user did not just <enter> after command. */ | |
98 | if (arg == NULL) | |
99 | error (_("You must provide a filename for this command.")); | |
100 | ||
101 | /* Check if a raw (-r|-raw) argument is provided. */ | |
102 | if (arg != NULL && check_raw_argument (&arg)) | |
103 | { | |
104 | scope = COMPILE_I_RAW_SCOPE; | |
105 | arg = skip_spaces (arg); | |
106 | } | |
107 | ||
108 | /* After processing arguments, check there is a filename at the end | |
109 | of the command. */ | |
110 | if (arg[0] == '\0') | |
111 | error (_("You must provide a filename with the raw option set.")); | |
112 | ||
113 | if (arg[0] == '-') | |
114 | error (_("Unknown argument specified.")); | |
115 | ||
116 | arg = skip_spaces (arg); | |
117 | arg = gdb_abspath (arg); | |
118 | make_cleanup (xfree, arg); | |
119 | buffer = xstrprintf ("#include \"%s\"\n", arg); | |
120 | make_cleanup (xfree, buffer); | |
5c65b58a | 121 | eval_compile_command (NULL, buffer, scope, NULL); |
bb2ec1b3 TT |
122 | do_cleanups (cleanup); |
123 | } | |
124 | ||
125 | /* Handle the input from the 'compile code' command. The | |
126 | "compile code" command is used to evaluate an expression that may | |
127 | contain calls to the GCC compiler. The language expected in this | |
128 | compile command is the language currently set in GDB. */ | |
129 | ||
130 | static void | |
131 | compile_code_command (char *arg, int from_tty) | |
132 | { | |
133 | struct cleanup *cleanup; | |
134 | enum compile_i_scope_types scope = COMPILE_I_SIMPLE_SCOPE; | |
135 | ||
cb814510 PA |
136 | cleanup = make_cleanup_restore_integer (¤t_ui->async); |
137 | current_ui->async = 0; | |
bb2ec1b3 TT |
138 | |
139 | if (arg != NULL && check_raw_argument (&arg)) | |
140 | { | |
141 | scope = COMPILE_I_RAW_SCOPE; | |
142 | arg = skip_spaces (arg); | |
143 | } | |
144 | ||
145 | arg = skip_spaces (arg); | |
146 | ||
147 | if (arg != NULL && !check_for_argument (&arg, "--", sizeof ("--") - 1)) | |
148 | { | |
149 | if (arg[0] == '-') | |
150 | error (_("Unknown argument specified.")); | |
151 | } | |
152 | ||
153 | if (arg && *arg) | |
5c65b58a | 154 | eval_compile_command (NULL, arg, scope, NULL); |
bb2ec1b3 TT |
155 | else |
156 | { | |
157 | struct command_line *l = get_command_line (compile_control, ""); | |
158 | ||
159 | make_cleanup_free_command_lines (&l); | |
160 | l->control_u.compile.scope = scope; | |
161 | execute_control_command_untraced (l); | |
162 | } | |
163 | ||
164 | do_cleanups (cleanup); | |
165 | } | |
166 | ||
36de76f9 JK |
167 | /* Callback for compile_print_command. */ |
168 | ||
169 | void | |
170 | compile_print_value (struct value *val, void *data_voidp) | |
171 | { | |
9a3c8263 | 172 | const struct format_data *fmtp = (const struct format_data *) data_voidp; |
36de76f9 JK |
173 | |
174 | print_value (val, fmtp); | |
175 | } | |
176 | ||
177 | /* Handle the input from the 'compile print' command. The "compile | |
178 | print" command is used to evaluate and print an expression that may | |
179 | contain calls to the GCC compiler. The language expected in this | |
180 | compile command is the language currently set in GDB. */ | |
181 | ||
182 | static void | |
183 | compile_print_command (char *arg_param, int from_tty) | |
184 | { | |
185 | const char *arg = arg_param; | |
186 | struct cleanup *cleanup; | |
187 | enum compile_i_scope_types scope = COMPILE_I_PRINT_ADDRESS_SCOPE; | |
188 | struct format_data fmt; | |
189 | ||
cb814510 PA |
190 | cleanup = make_cleanup_restore_integer (¤t_ui->async); |
191 | current_ui->async = 0; | |
36de76f9 JK |
192 | |
193 | /* Passing &FMT as SCOPE_DATA is safe as do_module_cleanup will not | |
194 | touch the stale pointer if compile_object_run has already quit. */ | |
195 | print_command_parse_format (&arg, "compile print", &fmt); | |
196 | ||
197 | if (arg && *arg) | |
198 | eval_compile_command (NULL, arg, scope, &fmt); | |
199 | else | |
200 | { | |
201 | struct command_line *l = get_command_line (compile_control, ""); | |
202 | ||
203 | make_cleanup_free_command_lines (&l); | |
204 | l->control_u.compile.scope = scope; | |
205 | l->control_u.compile.scope_data = &fmt; | |
206 | execute_control_command_untraced (l); | |
207 | } | |
208 | ||
209 | do_cleanups (cleanup); | |
210 | } | |
211 | ||
bb2ec1b3 TT |
212 | /* A cleanup function to remove a directory and all its contents. */ |
213 | ||
214 | static void | |
215 | do_rmdir (void *arg) | |
216 | { | |
9a3c8263 | 217 | const char *dir = (const char *) arg; |
bb2ec1b3 | 218 | char *zap; |
3ce348af CG |
219 | int wstat; |
220 | ||
61012eef | 221 | gdb_assert (startswith (dir, TMP_PREFIX)); |
bb2ec1b3 | 222 | zap = concat ("rm -rf ", dir, (char *) NULL); |
3ce348af CG |
223 | wstat = system (zap); |
224 | if (wstat == -1 || !WIFEXITED (wstat) || WEXITSTATUS (wstat) != 0) | |
225 | warning (_("Could not remove temporary directory %s"), dir); | |
226 | XDELETEVEC (zap); | |
bb2ec1b3 TT |
227 | } |
228 | ||
229 | /* Return the name of the temporary directory to use for .o files, and | |
230 | arrange for the directory to be removed at shutdown. */ | |
231 | ||
232 | static const char * | |
233 | get_compile_file_tempdir (void) | |
234 | { | |
235 | static char *tempdir_name; | |
236 | ||
237 | #define TEMPLATE TMP_PREFIX "XXXXXX" | |
238 | char tname[sizeof (TEMPLATE)]; | |
239 | ||
240 | if (tempdir_name != NULL) | |
241 | return tempdir_name; | |
242 | ||
243 | strcpy (tname, TEMPLATE); | |
244 | #undef TEMPLATE | |
1bc1068a | 245 | #ifdef HAVE_MKDTEMP |
bb2ec1b3 | 246 | tempdir_name = mkdtemp (tname); |
1bc1068a JK |
247 | #else |
248 | error (_("Command not supported on this host.")); | |
249 | #endif | |
bb2ec1b3 TT |
250 | if (tempdir_name == NULL) |
251 | perror_with_name (_("Could not make temporary directory")); | |
252 | ||
253 | tempdir_name = xstrdup (tempdir_name); | |
254 | make_final_cleanup (do_rmdir, tempdir_name); | |
255 | return tempdir_name; | |
256 | } | |
257 | ||
258 | /* Compute the names of source and object files to use. The names are | |
259 | allocated by malloc and should be freed by the caller. */ | |
260 | ||
261 | static void | |
262 | get_new_file_names (char **source_file, char **object_file) | |
263 | { | |
264 | static int seq; | |
265 | const char *dir = get_compile_file_tempdir (); | |
266 | ||
267 | ++seq; | |
268 | *source_file = xstrprintf ("%s%sout%d.c", dir, SLASH_STRING, seq); | |
269 | *object_file = xstrprintf ("%s%sout%d.o", dir, SLASH_STRING, seq); | |
270 | } | |
271 | ||
272 | /* Get the block and PC at which to evaluate an expression. */ | |
273 | ||
274 | static const struct block * | |
275 | get_expr_block_and_pc (CORE_ADDR *pc) | |
276 | { | |
277 | const struct block *block = get_selected_block (pc); | |
278 | ||
279 | if (block == NULL) | |
280 | { | |
281 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); | |
282 | ||
283 | if (cursal.symtab) | |
284 | block = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (cursal.symtab), | |
285 | STATIC_BLOCK); | |
286 | if (block != NULL) | |
287 | *pc = BLOCK_START (block); | |
288 | } | |
289 | else | |
290 | *pc = BLOCK_START (block); | |
291 | ||
292 | return block; | |
293 | } | |
294 | ||
295 | /* Call gdb_buildargv, set its result for S into *ARGVP but calculate also the | |
296 | number of parsed arguments into *ARGCP. If gdb_buildargv has returned NULL | |
297 | then *ARGCP is set to zero. */ | |
298 | ||
299 | static void | |
300 | build_argc_argv (const char *s, int *argcp, char ***argvp) | |
301 | { | |
302 | *argvp = gdb_buildargv (s); | |
303 | *argcp = countargv (*argvp); | |
304 | } | |
305 | ||
306 | /* String for 'set compile-args' and 'show compile-args'. */ | |
307 | static char *compile_args; | |
308 | ||
309 | /* Parsed form of COMPILE_ARGS. COMPILE_ARGS_ARGV is NULL terminated. */ | |
310 | static int compile_args_argc; | |
311 | static char **compile_args_argv; | |
312 | ||
313 | /* Implement 'set compile-args'. */ | |
314 | ||
315 | static void | |
316 | set_compile_args (char *args, int from_tty, struct cmd_list_element *c) | |
317 | { | |
318 | freeargv (compile_args_argv); | |
319 | build_argc_argv (compile_args, &compile_args_argc, &compile_args_argv); | |
320 | } | |
321 | ||
322 | /* Implement 'show compile-args'. */ | |
323 | ||
324 | static void | |
325 | show_compile_args (struct ui_file *file, int from_tty, | |
326 | struct cmd_list_element *c, const char *value) | |
327 | { | |
328 | fprintf_filtered (file, _("Compile command command-line arguments " | |
329 | "are \"%s\".\n"), | |
330 | value); | |
331 | } | |
332 | ||
333 | /* Append ARGC and ARGV (as parsed by build_argc_argv) to *ARGCP and *ARGVP. | |
334 | ARGCP+ARGVP can be zero+NULL and also ARGC+ARGV can be zero+NULL. */ | |
335 | ||
336 | static void | |
337 | append_args (int *argcp, char ***argvp, int argc, char **argv) | |
338 | { | |
339 | int argi; | |
340 | ||
8d749320 | 341 | *argvp = XRESIZEVEC (char *, *argvp, (*argcp + argc + 1)); |
bb2ec1b3 TT |
342 | |
343 | for (argi = 0; argi < argc; argi++) | |
344 | (*argvp)[(*argcp)++] = xstrdup (argv[argi]); | |
345 | (*argvp)[(*argcp)] = NULL; | |
346 | } | |
347 | ||
348 | /* Return DW_AT_producer parsed for get_selected_frame () (if any). | |
349 | Return NULL otherwise. | |
350 | ||
351 | GCC already filters its command-line arguments only for the suitable ones to | |
352 | put into DW_AT_producer - see GCC function gen_producer_string. */ | |
353 | ||
354 | static const char * | |
355 | get_selected_pc_producer_options (void) | |
356 | { | |
357 | CORE_ADDR pc = get_frame_pc (get_selected_frame (NULL)); | |
358 | struct compunit_symtab *symtab = find_pc_compunit_symtab (pc); | |
359 | const char *cs; | |
360 | ||
361 | if (symtab == NULL || symtab->producer == NULL | |
61012eef | 362 | || !startswith (symtab->producer, "GNU ")) |
bb2ec1b3 TT |
363 | return NULL; |
364 | ||
365 | cs = symtab->producer; | |
366 | while (*cs != 0 && *cs != '-') | |
367 | cs = skip_spaces_const (skip_to_space_const (cs)); | |
368 | if (*cs != '-') | |
369 | return NULL; | |
370 | return cs; | |
371 | } | |
372 | ||
a7606d80 JK |
373 | /* Filter out unwanted options from *ARGCP and ARGV. */ |
374 | ||
375 | static void | |
376 | filter_args (int *argcp, char **argv) | |
377 | { | |
378 | char **destv; | |
379 | ||
380 | for (destv = argv; *argv != NULL; argv++) | |
381 | { | |
382 | /* -fpreprocessed may get in commonly from ccache. */ | |
383 | if (strcmp (*argv, "-fpreprocessed") == 0) | |
384 | { | |
385 | xfree (*argv); | |
386 | (*argcp)--; | |
387 | continue; | |
388 | } | |
389 | *destv++ = *argv; | |
390 | } | |
391 | *destv = NULL; | |
392 | } | |
393 | ||
bb2ec1b3 TT |
394 | /* Produce final vector of GCC compilation options. First element is target |
395 | size ("-m64", "-m32" etc.), optionally followed by DW_AT_producer options | |
396 | and then compile-args string GDB variable. */ | |
397 | ||
398 | static void | |
399 | get_args (const struct compile_instance *compiler, struct gdbarch *gdbarch, | |
400 | int *argcp, char ***argvp) | |
401 | { | |
402 | const char *cs_producer_options; | |
403 | int argc_compiler; | |
404 | char **argv_compiler; | |
405 | ||
406 | build_argc_argv (gdbarch_gcc_target_options (gdbarch), | |
407 | argcp, argvp); | |
408 | ||
409 | cs_producer_options = get_selected_pc_producer_options (); | |
410 | if (cs_producer_options != NULL) | |
411 | { | |
412 | int argc_producer; | |
413 | char **argv_producer; | |
414 | ||
415 | build_argc_argv (cs_producer_options, &argc_producer, &argv_producer); | |
a7606d80 | 416 | filter_args (&argc_producer, argv_producer); |
bb2ec1b3 TT |
417 | append_args (argcp, argvp, argc_producer, argv_producer); |
418 | freeargv (argv_producer); | |
419 | } | |
420 | ||
421 | build_argc_argv (compiler->gcc_target_options, | |
422 | &argc_compiler, &argv_compiler); | |
423 | append_args (argcp, argvp, argc_compiler, argv_compiler); | |
424 | freeargv (argv_compiler); | |
425 | ||
426 | append_args (argcp, argvp, compile_args_argc, compile_args_argv); | |
427 | } | |
428 | ||
429 | /* A cleanup function to destroy a gdb_gcc_instance. */ | |
430 | ||
431 | static void | |
432 | cleanup_compile_instance (void *arg) | |
433 | { | |
9a3c8263 | 434 | struct compile_instance *inst = (struct compile_instance *) arg; |
bb2ec1b3 TT |
435 | |
436 | inst->destroy (inst); | |
437 | } | |
438 | ||
439 | /* A cleanup function to unlink a file. */ | |
440 | ||
441 | static void | |
442 | cleanup_unlink_file (void *arg) | |
443 | { | |
9a3c8263 | 444 | const char *filename = (const char *) arg; |
bb2ec1b3 TT |
445 | |
446 | unlink (filename); | |
447 | } | |
448 | ||
449 | /* A helper function suitable for use as the "print_callback" in the | |
450 | compiler object. */ | |
451 | ||
452 | static void | |
453 | print_callback (void *ignore, const char *message) | |
454 | { | |
455 | fputs_filtered (message, gdb_stderr); | |
456 | } | |
457 | ||
458 | /* Process the compilation request. On success it returns the object | |
459 | file name and *SOURCE_FILEP is set to source file name. On an | |
460 | error condition, error () is called. The caller is responsible for | |
461 | freeing both strings. */ | |
462 | ||
463 | static char * | |
851c9091 | 464 | compile_to_object (struct command_line *cmd, const char *cmd_string, |
bb2ec1b3 TT |
465 | enum compile_i_scope_types scope, |
466 | char **source_filep) | |
467 | { | |
468 | char *code; | |
851c9091 | 469 | const char *input; |
bb2ec1b3 TT |
470 | char *source_file, *object_file; |
471 | struct compile_instance *compiler; | |
472 | struct cleanup *cleanup, *inner_cleanup; | |
473 | const struct block *expr_block; | |
474 | CORE_ADDR trash_pc, expr_pc; | |
475 | int argc; | |
476 | char **argv; | |
477 | int ok; | |
478 | FILE *src; | |
479 | struct gdbarch *gdbarch = get_current_arch (); | |
480 | const char *os_rx; | |
481 | const char *arch_rx; | |
482 | char *triplet_rx; | |
483 | char *error_message; | |
484 | ||
485 | if (!target_has_execution) | |
486 | error (_("The program must be running for the compile command to "\ | |
487 | "work.")); | |
488 | ||
489 | expr_block = get_expr_block_and_pc (&trash_pc); | |
490 | expr_pc = get_frame_address_in_block (get_selected_frame (NULL)); | |
491 | ||
492 | /* Set up instance and context for the compiler. */ | |
493 | if (current_language->la_get_compile_instance == NULL) | |
cdaec3f3 LM |
494 | error (_("No compiler support for language %s."), |
495 | current_language->la_name); | |
bb2ec1b3 TT |
496 | compiler = current_language->la_get_compile_instance (); |
497 | cleanup = make_cleanup (cleanup_compile_instance, compiler); | |
498 | ||
499 | compiler->fe->ops->set_print_callback (compiler->fe, print_callback, NULL); | |
500 | ||
501 | compiler->scope = scope; | |
502 | compiler->block = expr_block; | |
503 | ||
504 | /* From the provided expression, build a scope to pass to the | |
505 | compiler. */ | |
506 | if (cmd != NULL) | |
507 | { | |
508 | struct ui_file *stream = mem_fileopen (); | |
509 | struct command_line *iter; | |
851c9091 | 510 | char *stream_buf; |
bb2ec1b3 TT |
511 | |
512 | make_cleanup_ui_file_delete (stream); | |
513 | for (iter = cmd->body_list[0]; iter; iter = iter->next) | |
514 | { | |
515 | fputs_unfiltered (iter->line, stream); | |
516 | fputs_unfiltered ("\n", stream); | |
517 | } | |
518 | ||
851c9091 JK |
519 | stream_buf = ui_file_xstrdup (stream, NULL); |
520 | make_cleanup (xfree, stream_buf); | |
521 | input = stream_buf; | |
bb2ec1b3 TT |
522 | } |
523 | else if (cmd_string != NULL) | |
851c9091 | 524 | input = cmd_string; |
bb2ec1b3 TT |
525 | else |
526 | error (_("Neither a simple expression, or a multi-line specified.")); | |
527 | ||
851c9091 | 528 | code = current_language->la_compute_program (compiler, input, gdbarch, |
bb2ec1b3 TT |
529 | expr_block, expr_pc); |
530 | make_cleanup (xfree, code); | |
531 | if (compile_debug) | |
a4063588 | 532 | fprintf_unfiltered (gdb_stdlog, "debug output:\n\n%s", code); |
bb2ec1b3 TT |
533 | |
534 | os_rx = osabi_triplet_regexp (gdbarch_osabi (gdbarch)); | |
535 | arch_rx = gdbarch_gnu_triplet_regexp (gdbarch); | |
71b30f27 MK |
536 | |
537 | /* Allow triplets with or without vendor set. */ | |
538 | triplet_rx = concat (arch_rx, "(-[^-]*)?-", os_rx, (char *) NULL); | |
bb2ec1b3 TT |
539 | make_cleanup (xfree, triplet_rx); |
540 | ||
541 | /* Set compiler command-line arguments. */ | |
542 | get_args (compiler, gdbarch, &argc, &argv); | |
543 | make_cleanup_freeargv (argv); | |
544 | ||
545 | error_message = compiler->fe->ops->set_arguments (compiler->fe, triplet_rx, | |
546 | argc, argv); | |
547 | if (error_message != NULL) | |
548 | { | |
549 | make_cleanup (xfree, error_message); | |
550 | error ("%s", error_message); | |
551 | } | |
552 | ||
553 | if (compile_debug) | |
554 | { | |
555 | int argi; | |
556 | ||
a4063588 | 557 | fprintf_unfiltered (gdb_stdlog, "Passing %d compiler options:\n", argc); |
bb2ec1b3 | 558 | for (argi = 0; argi < argc; argi++) |
a4063588 | 559 | fprintf_unfiltered (gdb_stdlog, "Compiler option %d: <%s>\n", |
bb2ec1b3 TT |
560 | argi, argv[argi]); |
561 | } | |
562 | ||
563 | get_new_file_names (&source_file, &object_file); | |
564 | inner_cleanup = make_cleanup (xfree, source_file); | |
565 | make_cleanup (xfree, object_file); | |
566 | ||
567 | src = gdb_fopen_cloexec (source_file, "w"); | |
568 | if (src == NULL) | |
569 | perror_with_name (_("Could not open source file for writing")); | |
570 | make_cleanup (cleanup_unlink_file, source_file); | |
571 | if (fputs (code, src) == EOF) | |
572 | perror_with_name (_("Could not write to source file")); | |
573 | fclose (src); | |
574 | ||
575 | if (compile_debug) | |
a4063588 | 576 | fprintf_unfiltered (gdb_stdlog, "source file produced: %s\n\n", |
bb2ec1b3 TT |
577 | source_file); |
578 | ||
579 | /* Call the compiler and start the compilation process. */ | |
580 | compiler->fe->ops->set_source_file (compiler->fe, source_file); | |
581 | ||
582 | if (!compiler->fe->ops->compile (compiler->fe, object_file, | |
583 | compile_debug)) | |
584 | error (_("Compilation failed.")); | |
585 | ||
586 | if (compile_debug) | |
a4063588 | 587 | fprintf_unfiltered (gdb_stdlog, "object file produced: %s\n\n", |
bb2ec1b3 TT |
588 | object_file); |
589 | ||
590 | discard_cleanups (inner_cleanup); | |
591 | do_cleanups (cleanup); | |
592 | *source_filep = source_file; | |
593 | return object_file; | |
594 | } | |
595 | ||
596 | /* The "compile" prefix command. */ | |
597 | ||
598 | static void | |
599 | compile_command (char *args, int from_tty) | |
600 | { | |
601 | /* If a sub-command is not specified to the compile prefix command, | |
602 | assume it is a direct code compilation. */ | |
603 | compile_code_command (args, from_tty); | |
604 | } | |
605 | ||
606 | /* See compile.h. */ | |
607 | ||
608 | void | |
851c9091 | 609 | eval_compile_command (struct command_line *cmd, const char *cmd_string, |
5c65b58a | 610 | enum compile_i_scope_types scope, void *scope_data) |
bb2ec1b3 TT |
611 | { |
612 | char *object_file, *source_file; | |
613 | ||
614 | object_file = compile_to_object (cmd, cmd_string, scope, &source_file); | |
615 | if (object_file != NULL) | |
616 | { | |
617 | struct cleanup *cleanup_xfree, *cleanup_unlink; | |
618 | struct compile_module *compile_module; | |
619 | ||
620 | cleanup_xfree = make_cleanup (xfree, object_file); | |
621 | make_cleanup (xfree, source_file); | |
622 | cleanup_unlink = make_cleanup (cleanup_unlink_file, object_file); | |
623 | make_cleanup (cleanup_unlink_file, source_file); | |
5c65b58a JK |
624 | compile_module = compile_object_load (object_file, source_file, |
625 | scope, scope_data); | |
36de76f9 JK |
626 | if (compile_module == NULL) |
627 | { | |
628 | gdb_assert (scope == COMPILE_I_PRINT_ADDRESS_SCOPE); | |
629 | do_cleanups (cleanup_xfree); | |
630 | eval_compile_command (cmd, cmd_string, | |
631 | COMPILE_I_PRINT_VALUE_SCOPE, scope_data); | |
632 | return; | |
633 | } | |
bb2ec1b3 TT |
634 | discard_cleanups (cleanup_unlink); |
635 | do_cleanups (cleanup_xfree); | |
636 | compile_object_run (compile_module); | |
637 | } | |
638 | } | |
639 | ||
640 | /* See compile/compile-internal.h. */ | |
641 | ||
642 | char * | |
643 | compile_register_name_mangled (struct gdbarch *gdbarch, int regnum) | |
644 | { | |
645 | const char *regname = gdbarch_register_name (gdbarch, regnum); | |
646 | ||
647 | return xstrprintf ("__%s", regname); | |
648 | } | |
649 | ||
650 | /* See compile/compile-internal.h. */ | |
651 | ||
652 | int | |
653 | compile_register_name_demangle (struct gdbarch *gdbarch, | |
654 | const char *regname) | |
655 | { | |
656 | int regnum; | |
657 | ||
658 | if (regname[0] != '_' || regname[1] != '_') | |
659 | error (_("Invalid register name \"%s\"."), regname); | |
660 | regname += 2; | |
661 | ||
662 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) | |
663 | if (strcmp (regname, gdbarch_register_name (gdbarch, regnum)) == 0) | |
664 | return regnum; | |
665 | ||
666 | error (_("Cannot find gdbarch register \"%s\"."), regname); | |
667 | } | |
668 | ||
669 | extern initialize_file_ftype _initialize_compile; | |
670 | ||
671 | void | |
672 | _initialize_compile (void) | |
673 | { | |
674 | struct cmd_list_element *c = NULL; | |
675 | ||
676 | add_prefix_cmd ("compile", class_obscure, compile_command, | |
677 | _("\ | |
678 | Command to compile source code and inject it into the inferior."), | |
679 | &compile_command_list, "compile ", 1, &cmdlist); | |
680 | add_com_alias ("expression", "compile", class_obscure, 0); | |
681 | ||
682 | add_cmd ("code", class_obscure, compile_code_command, | |
683 | _("\ | |
684 | Compile, inject, and execute code.\n\ | |
685 | \n\ | |
686 | Usage: compile code [-r|-raw] [--] [CODE]\n\ | |
687 | -r|-raw: Suppress automatic 'void _gdb_expr () { CODE }' wrapping.\n\ | |
688 | --: Do not parse any options beyond this delimiter. All text to the\n\ | |
689 | right will be treated as source code.\n\ | |
690 | \n\ | |
691 | The source code may be specified as a simple one line expression, e.g.:\n\ | |
692 | \n\ | |
693 | compile code printf(\"Hello world\\n\");\n\ | |
694 | \n\ | |
36de76f9 JK |
695 | Alternatively, you can type a multiline expression by invoking\n\ |
696 | this command with no argument. GDB will then prompt for the\n\ | |
697 | expression interactively; type a line containing \"end\" to\n\ | |
698 | indicate the end of the expression."), | |
bb2ec1b3 TT |
699 | &compile_command_list); |
700 | ||
701 | c = add_cmd ("file", class_obscure, compile_file_command, | |
702 | _("\ | |
703 | Evaluate a file containing source code.\n\ | |
704 | \n\ | |
705 | Usage: compile file [-r|-raw] [filename]\n\ | |
706 | -r|-raw: Suppress automatic 'void _gdb_expr () { CODE }' wrapping."), | |
707 | &compile_command_list); | |
708 | set_cmd_completer (c, filename_completer); | |
709 | ||
36de76f9 JK |
710 | add_cmd ("print", class_obscure, compile_print_command, |
711 | _("\ | |
712 | Evaluate EXPR by using the compiler and print result.\n\ | |
713 | \n\ | |
714 | Usage: compile print[/FMT] [EXPR]\n\ | |
715 | \n\ | |
716 | The expression may be specified on the same line as the command, e.g.:\n\ | |
717 | \n\ | |
718 | compile print i\n\ | |
719 | \n\ | |
720 | Alternatively, you can type a multiline expression by invoking\n\ | |
721 | this command with no argument. GDB will then prompt for the\n\ | |
722 | expression interactively; type a line containing \"end\" to\n\ | |
723 | indicate the end of the expression.\n\ | |
724 | \n\ | |
725 | EXPR may be preceded with /FMT, where FMT is a format letter\n\ | |
726 | but no count or size letter (see \"x\" command)."), | |
727 | &compile_command_list); | |
728 | ||
bb2ec1b3 TT |
729 | add_setshow_boolean_cmd ("compile", class_maintenance, &compile_debug, _("\ |
730 | Set compile command debugging."), _("\ | |
731 | Show compile command debugging."), _("\ | |
732 | When on, compile command debugging is enabled."), | |
733 | NULL, show_compile_debug, | |
734 | &setdebuglist, &showdebuglist); | |
735 | ||
736 | add_setshow_string_cmd ("compile-args", class_support, | |
737 | &compile_args, | |
738 | _("Set compile command GCC command-line arguments"), | |
739 | _("Show compile command GCC command-line arguments"), | |
740 | _("\ | |
741 | Use options like -I (include file directory) or ABI settings.\n\ | |
742 | String quoting is parsed like in shell, for example:\n\ | |
743 | -mno-align-double \"-I/dir with a space/include\""), | |
744 | set_compile_args, show_compile_args, &setlist, &showlist); | |
745 | ||
746 | /* Override flags possibly coming from DW_AT_producer. */ | |
747 | compile_args = xstrdup ("-O0 -gdwarf-4" | |
4b62a76e | 748 | /* We use -fPIE Otherwise GDB would need to reserve space large enough for |
bb2ec1b3 TT |
749 | any object file in the inferior in advance to get the final address when |
750 | to link the object file to and additionally the default system linker | |
751 | script would need to be modified so that one can specify there the | |
4b62a76e JK |
752 | absolute target address. |
753 | -fPIC is not used at is would require from GDB to generate .got. */ | |
754 | " -fPIE" | |
3a9558c4 JK |
755 | /* We want warnings, except for some commonly happening for GDB commands. */ |
756 | " -Wall " | |
757 | " -Wno-implicit-function-declaration" | |
758 | " -Wno-unused-but-set-variable" | |
759 | " -Wno-unused-variable" | |
bb2ec1b3 TT |
760 | /* Override CU's possible -fstack-protector-strong. */ |
761 | " -fno-stack-protector" | |
762 | ); | |
763 | set_compile_args (compile_args, 0, NULL); | |
764 | } |