1 /* *INDENT-OFF* */ /* ATTRIBUTE_PRINTF confuses indent, avoid running it
3 /* I/O, string, cleanup, and other random utilities for GDB.
4 Copyright (C) 1986-2017 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "exceptions.h"
25 #include "common/scoped_restore.h"
28 extern void initialize_utils (void);
30 /* String utilities. */
32 extern int sevenbit_strings;
34 /* Do a strncmp() type operation on STRING1 and STRING2, ignoring any
35 differences in whitespace. STRING2_LEN is STRING2's length.
36 Returns 0 if STRING1 matches STRING2_LEN characters of STRING2,
37 non-zero otherwise (slightly different than strncmp()'s range of
39 extern int strncmp_iw (const char *string1, const char *string2,
42 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
43 differences in whitespace. Returns 0 if they match, non-zero if
44 they don't (slightly different than strcmp()'s range of return
47 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
48 This "feature" is useful when searching for matching C++ function
49 names (such as if the user types 'break FOO', where FOO is a
50 mangled C++ function). */
51 extern int strcmp_iw (const char *string1, const char *string2);
53 extern int strcmp_iw_ordered (const char *, const char *);
55 extern int streq (const char *, const char *);
57 extern int subset_compare (const char *, const char *);
59 int compare_positive_ints (const void *ap, const void *bp);
60 int compare_strings (const void *ap, const void *bp);
62 /* Compare C strings for std::sort. */
65 compare_cstrings (const char *str1, const char *str2)
67 return strcmp (str1, str2) < 0;
70 /* A wrapper for bfd_errmsg to produce a more helpful error message
71 in the case of bfd_error_file_ambiguously recognized.
72 MATCHING, if non-NULL, is the corresponding argument to
73 bfd_check_format_matches, and will be freed. */
75 extern const char *gdb_bfd_errmsg (bfd_error_type error_tag, char **matching);
77 /* Reset the prompt_for_continue clock. */
78 void reset_prompt_for_continue_wait_time (void);
79 /* Return the time spent in prompt_for_continue. */
80 std::chrono::steady_clock::duration get_prompt_for_continue_wait_time ();
82 /* Parsing utilites. */
84 extern int parse_pid_to_attach (const char *args);
86 extern int parse_escape (struct gdbarch *, const char **);
88 char **gdb_buildargv (const char *);
90 /* A wrapper for an array of char* that was allocated in the way that
91 'buildargv' does, and should be freed with 'freeargv'. */
97 /* A constructor that initializes to NULL. */
104 /* A constructor that calls buildargv on STR. STR may be NULL, in
105 which case this object is initialized with a NULL array. If
106 buildargv fails due to out-of-memory, call malloc_failure.
107 Therefore, the value is guaranteed to be non-NULL, unless the
108 parameter itself is NULL. */
110 explicit gdb_argv (const char *str)
116 /* A constructor that takes ownership of an existing array. */
118 explicit gdb_argv (char **array)
123 gdb_argv (const gdb_argv &) = delete;
124 gdb_argv &operator= (const gdb_argv &) = delete;
131 /* Call buildargv on STR, storing the result in this object. Any
132 previous state is freed. STR may be NULL, in which case this
133 object is reset with a NULL array. If buildargv fails due to
134 out-of-memory, call malloc_failure. Therefore, the value is
135 guaranteed to be non-NULL, unless the parameter itself is
138 void reset (const char *str);
140 /* Return the underlying array. */
147 /* Return the underlying array, transferring ownership to the
152 char **result = m_argv;
157 /* Return the number of items in the array. */
161 return countargv (m_argv);
164 /* Index into the array. */
166 char *operator[] (int arg)
168 gdb_assert (m_argv != NULL);
172 /* The iterator type. */
174 typedef char **iterator;
176 /* Return an iterator pointing to the start of the array. */
183 /* Return an iterator pointing to the end of the array. */
187 return m_argv + count ();
190 bool operator!= (nullptr_t)
192 return m_argv != NULL;
195 bool operator== (nullptr_t)
197 return m_argv == NULL;
202 /* The wrapped array. */
208 /* Cleanup utilities. */
210 extern struct cleanup *make_cleanup_freeargv (char **);
213 extern struct cleanup *
214 make_cleanup_ui_out_redirect_pop (struct ui_out *uiout);
216 struct section_addr_info;
217 extern struct cleanup *(make_cleanup_free_section_addr_info
218 (struct section_addr_info *));
220 /* For make_cleanup_close see common/filestuff.h. */
222 extern struct cleanup *make_cleanup_restore_integer (int *variable);
223 extern struct cleanup *make_cleanup_restore_uinteger (unsigned int *variable);
226 extern struct cleanup *make_cleanup_unpush_target (struct target_ops *ops);
228 extern struct cleanup *make_cleanup_value_free_to_mark (struct value *);
229 extern struct cleanup *make_cleanup_value_free (struct value *);
231 /* A deleter for a hash table. */
234 void operator() (htab *ptr) const
240 /* A unique_ptr wrapper for htab_t. */
241 typedef std::unique_ptr<htab, htab_deleter> htab_up;
244 extern struct cleanup *make_cleanup_clear_parser_state
245 (struct parser_state **p);
247 extern void free_current_contents (void *);
249 extern void init_page_info (void);
251 extern struct cleanup *make_cleanup_restore_page_info (void);
252 extern struct cleanup *
253 set_batch_flag_and_make_cleanup_restore_page_info (void);
255 extern struct cleanup *make_bpstat_clear_actions_cleanup (void);
257 /* Path utilities. */
259 extern char *gdb_realpath (const char *);
261 extern char *gdb_realpath_keepfile (const char *);
263 extern char *gdb_abspath (const char *);
265 extern int gdb_filename_fnmatch (const char *pattern, const char *string,
268 extern void substitute_path_component (char **stringp, const char *from,
271 std::string ldirname (const char *filename);
273 extern int count_path_elements (const char *path);
275 extern const char *strip_leading_path_elements (const char *path, int n);
277 /* GDB output, ui_file utilities. */
281 extern int query (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
282 extern int nquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
283 extern int yquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
285 extern void begin_line (void);
287 extern void wrap_here (const char *);
289 extern void reinitialize_more_filter (void);
291 extern int pagination_enabled;
293 extern struct ui_file **current_ui_gdb_stdout_ptr (void);
294 extern struct ui_file **current_ui_gdb_stdin_ptr (void);
295 extern struct ui_file **current_ui_gdb_stderr_ptr (void);
296 extern struct ui_file **current_ui_gdb_stdlog_ptr (void);
298 /* The current top level's ui_file streams. */
301 #define gdb_stdout (*current_ui_gdb_stdout_ptr ())
303 #define gdb_stdin (*current_ui_gdb_stdin_ptr ())
304 /* Serious error notifications */
305 #define gdb_stderr (*current_ui_gdb_stderr_ptr ())
306 /* Log/debug/trace messages that should bypass normal stdout/stderr
307 filtering. For moment, always call this stream using
308 *_unfiltered. In the very near future that restriction shall be
309 removed - either call shall be unfiltered. (cagney 1999-06-13). */
310 #define gdb_stdlog (*current_ui_gdb_stdlog_ptr ())
312 /* Truly global ui_file streams. These are all defined in main.c. */
314 /* Target output that should bypass normal stdout/stderr filtering.
315 For moment, always call this stream using *_unfiltered. In the
316 very near future that restriction shall be removed - either call
317 shall be unfiltered. (cagney 1999-07-02). */
318 extern struct ui_file *gdb_stdtarg;
319 extern struct ui_file *gdb_stdtargerr;
320 extern struct ui_file *gdb_stdtargin;
322 /* Set the screen dimensions to WIDTH and HEIGHT. */
324 extern void set_screen_width_and_height (int width, int height);
326 /* More generic printf like operations. Filtered versions may return
327 non-locally on error. */
329 extern void fputs_filtered (const char *, struct ui_file *);
331 extern void fputs_unfiltered (const char *, struct ui_file *);
333 extern int fputc_filtered (int c, struct ui_file *);
335 extern int fputc_unfiltered (int c, struct ui_file *);
337 extern int putchar_filtered (int c);
339 extern int putchar_unfiltered (int c);
341 extern void puts_filtered (const char *);
343 extern void puts_unfiltered (const char *);
345 extern void puts_filtered_tabular (char *string, int width, int right);
347 extern void puts_debug (char *prefix, char *string, char *suffix);
349 extern void vprintf_filtered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
351 extern void vfprintf_filtered (struct ui_file *, const char *, va_list)
352 ATTRIBUTE_PRINTF (2, 0);
354 extern void fprintf_filtered (struct ui_file *, const char *, ...)
355 ATTRIBUTE_PRINTF (2, 3);
357 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...)
358 ATTRIBUTE_PRINTF (3, 4);
360 extern void printf_filtered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
362 extern void printfi_filtered (int, const char *, ...) ATTRIBUTE_PRINTF (2, 3);
364 extern void vprintf_unfiltered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
366 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list)
367 ATTRIBUTE_PRINTF (2, 0);
369 extern void fprintf_unfiltered (struct ui_file *, const char *, ...)
370 ATTRIBUTE_PRINTF (2, 3);
372 extern void printf_unfiltered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
374 extern void print_spaces (int, struct ui_file *);
376 extern void print_spaces_filtered (int, struct ui_file *);
378 extern char *n_spaces (int);
380 extern void fputstr_filtered (const char *str, int quotr,
381 struct ui_file * stream);
383 extern void fputstr_unfiltered (const char *str, int quotr,
384 struct ui_file * stream);
386 extern void fputstrn_filtered (const char *str, int n, int quotr,
387 struct ui_file * stream);
389 extern void fputstrn_unfiltered (const char *str, int n, int quotr,
390 struct ui_file * stream);
392 /* Return nonzero if filtered printing is initialized. */
393 extern int filtered_printing_initialized (void);
395 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
396 extern void gdb_print_host_address_1 (const void *addr, struct ui_file *stream);
398 /* Wrapper that avoids adding a pointless cast to all callers. */
399 #define gdb_print_host_address(ADDR, STREAM) \
400 gdb_print_host_address_1 ((const void *) ADDR, STREAM)
402 /* Convert CORE_ADDR to string in platform-specific manner.
403 This is usually formatted similar to 0x%lx. */
404 extern const char *paddress (struct gdbarch *gdbarch, CORE_ADDR addr);
406 /* Return a string representation in hexadecimal notation of ADDRESS,
407 which is suitable for printing. */
409 extern const char *print_core_address (struct gdbarch *gdbarch,
412 /* Callback hash_f and eq_f for htab_create_alloc or htab_create_alloc_ex. */
413 extern hashval_t core_addr_hash (const void *ap);
414 extern int core_addr_eq (const void *ap, const void *bp);
416 extern CORE_ADDR string_to_core_addr (const char *my_string);
418 extern void fprintf_symbol_filtered (struct ui_file *, const char *,
421 extern void throw_perror_with_name (enum errors errcode, const char *string)
424 extern void perror_warning_with_name (const char *string);
426 extern void print_sys_errmsg (const char *, int);
428 /* Warnings and error messages. */
430 extern void (*deprecated_error_begin_hook) (void);
432 /* Message to be printed before the warning message, when a warning occurs. */
434 extern const char *warning_pre_print;
436 extern void error_stream (const string_file &) ATTRIBUTE_NORETURN;
438 extern void demangler_vwarning (const char *file, int line,
439 const char *, va_list ap)
440 ATTRIBUTE_PRINTF (3, 0);
442 extern void demangler_warning (const char *file, int line,
443 const char *, ...) ATTRIBUTE_PRINTF (3, 4);
446 /* Misc. utilities. */
448 /* Allocation and deallocation functions for the libiberty hash table
449 which use obstacks. */
450 void *hashtab_obstack_allocate (void *data, size_t size, size_t count);
451 void dummy_obstack_deallocate (void *object, void *data);
454 extern pid_t wait_to_die_with_timeout (pid_t pid, int *status, int timeout);
457 extern int producer_is_gcc_ge_4 (const char *producer);
458 extern int producer_is_gcc (const char *producer, int *major, int *minor);
460 extern int myread (int, char *, int);
462 /* Ensure that V is aligned to an N byte boundary (B's assumed to be a
463 power of 2). Round up/down when necessary. Examples of correct
466 addr = align_up (addr, 8); -- VALUE needs 8 byte alignment
467 write_memory (addr, value, len);
472 sp = align_down (sp - len, 16); -- Keep SP 16 byte aligned
473 write_memory (sp, value, len);
475 Note that uses such as:
477 write_memory (addr, value, len);
478 addr += align_up (len, 8);
482 sp -= align_up (len, 8);
483 write_memory (sp, value, len);
485 are typically not correct as they don't ensure that the address (SP
486 or ADDR) is correctly aligned (relying on previous alignment to
487 keep things right). This is also why the methods are called
488 "align_..." instead of "round_..." as the latter reads better with
489 this incorrect coding style. */
491 extern ULONGEST align_up (ULONGEST v, int n);
492 extern ULONGEST align_down (ULONGEST v, int n);
494 /* Resource limits used by getrlimit and setrlimit. */
496 enum resource_limit_kind
502 /* Check whether GDB will be able to dump core using the dump_core
503 function. Returns zero if GDB cannot or should not dump core.
504 If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
505 If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */
507 extern int can_dump_core (enum resource_limit_kind limit_kind);
509 /* Print a warning that we cannot dump core. */
511 extern void warn_cant_dump_core (const char *reason);
513 /* Dump core trying to increase the core soft limit to hard limit
516 extern void dump_core (void);
518 /* Return the hex string form of LENGTH bytes of DATA.
519 Space for the result is malloc'd, caller must free. */
521 extern char *make_hex_string (const gdb_byte *data, size_t length);