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 extern int strcmp_iw (const char *, const char *);
36 extern int strcmp_iw_ordered (const char *, const char *);
38 extern int streq (const char *, const char *);
40 extern int subset_compare (char *, char *);
42 int compare_positive_ints (const void *ap, const void *bp);
43 int compare_strings (const void *ap, const void *bp);
45 /* A wrapper for bfd_errmsg to produce a more helpful error message
46 in the case of bfd_error_file_ambiguously recognized.
47 MATCHING, if non-NULL, is the corresponding argument to
48 bfd_check_format_matches, and will be freed. */
50 extern const char *gdb_bfd_errmsg (bfd_error_type error_tag, char **matching);
52 /* Reset the prompt_for_continue clock. */
53 void reset_prompt_for_continue_wait_time (void);
54 /* Return the time spent in prompt_for_continue. */
55 std::chrono::steady_clock::duration get_prompt_for_continue_wait_time ();
57 /* Parsing utilites. */
59 extern int parse_pid_to_attach (const char *args);
61 extern int parse_escape (struct gdbarch *, const char **);
63 char **gdb_buildargv (const char *);
65 /* Cleanup utilities. */
67 extern struct cleanup *make_cleanup_freeargv (char **);
70 extern struct cleanup *make_cleanup_ui_file_delete (struct ui_file *);
73 extern struct cleanup *
74 make_cleanup_ui_out_redirect_pop (struct ui_out *uiout);
76 struct section_addr_info;
77 extern struct cleanup *(make_cleanup_free_section_addr_info
78 (struct section_addr_info *));
80 /* For make_cleanup_close see common/filestuff.h. */
82 extern struct cleanup *make_cleanup_fclose (FILE *file);
84 extern struct cleanup *make_cleanup_bfd_unref (bfd *abfd);
87 extern struct cleanup *make_cleanup_obstack_free (struct obstack *obstack);
89 extern struct cleanup *make_cleanup_restore_integer (int *variable);
90 extern struct cleanup *make_cleanup_restore_uinteger (unsigned int *variable);
93 extern struct cleanup *make_cleanup_unpush_target (struct target_ops *ops);
95 extern struct cleanup *make_cleanup_value_free_to_mark (struct value *);
96 extern struct cleanup *make_cleanup_value_free (struct value *);
99 extern struct cleanup *make_cleanup_free_so (struct so_list *so);
101 extern struct cleanup *make_cleanup_restore_current_language (void);
103 /* A deleter for a hash table. */
106 void operator() (htab *ptr) const
112 /* A unique_ptr wrapper for htab_t. */
113 typedef std::unique_ptr<htab, htab_deleter> htab_up;
116 extern struct cleanup *make_cleanup_clear_parser_state
117 (struct parser_state **p);
119 extern void free_current_contents (void *);
121 extern void init_page_info (void);
123 extern struct cleanup *make_cleanup_restore_page_info (void);
124 extern struct cleanup *
125 set_batch_flag_and_make_cleanup_restore_page_info (void);
127 extern struct cleanup *make_bpstat_clear_actions_cleanup (void);
129 /* Path utilities. */
131 extern char *gdb_realpath (const char *);
133 extern char *gdb_realpath_keepfile (const char *);
135 extern char *gdb_abspath (const char *);
137 extern int gdb_filename_fnmatch (const char *pattern, const char *string,
140 extern void substitute_path_component (char **stringp, const char *from,
143 char *ldirname (const char *filename);
145 extern int count_path_elements (const char *path);
147 extern const char *strip_leading_path_elements (const char *path, int n);
149 /* GDB output, ui_file utilities. */
153 extern int query (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
154 extern int nquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
155 extern int yquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
157 extern void begin_line (void);
159 extern void wrap_here (const char *);
161 extern void reinitialize_more_filter (void);
163 extern int pagination_enabled;
165 extern struct ui_file **current_ui_gdb_stdout_ptr (void);
166 extern struct ui_file **current_ui_gdb_stdin_ptr (void);
167 extern struct ui_file **current_ui_gdb_stderr_ptr (void);
168 extern struct ui_file **current_ui_gdb_stdlog_ptr (void);
170 /* The current top level's ui_file streams. */
173 #define gdb_stdout (*current_ui_gdb_stdout_ptr ())
175 #define gdb_stdin (*current_ui_gdb_stdin_ptr ())
176 /* Serious error notifications */
177 #define gdb_stderr (*current_ui_gdb_stderr_ptr ())
178 /* Log/debug/trace messages that should bypass normal stdout/stderr
179 filtering. For moment, always call this stream using
180 *_unfiltered. In the very near future that restriction shall be
181 removed - either call shall be unfiltered. (cagney 1999-06-13). */
182 #define gdb_stdlog (*current_ui_gdb_stdlog_ptr ())
184 /* Truly global ui_file streams. These are all defined in main.c. */
186 /* Target output that should bypass normal stdout/stderr filtering.
187 For moment, always call this stream using *_unfiltered. In the
188 very near future that restriction shall be removed - either call
189 shall be unfiltered. (cagney 1999-07-02). */
190 extern struct ui_file *gdb_stdtarg;
191 extern struct ui_file *gdb_stdtargerr;
192 extern struct ui_file *gdb_stdtargin;
194 /* Set the screen dimensions to WIDTH and HEIGHT. */
196 extern void set_screen_width_and_height (int width, int height);
198 /* More generic printf like operations. Filtered versions may return
199 non-locally on error. */
201 extern void fputs_filtered (const char *, struct ui_file *);
203 extern void fputs_unfiltered (const char *, struct ui_file *);
205 extern int fputc_filtered (int c, struct ui_file *);
207 extern int fputc_unfiltered (int c, struct ui_file *);
209 extern int putchar_filtered (int c);
211 extern int putchar_unfiltered (int c);
213 extern void puts_filtered (const char *);
215 extern void puts_unfiltered (const char *);
217 extern void puts_filtered_tabular (char *string, int width, int right);
219 extern void puts_debug (char *prefix, char *string, char *suffix);
221 extern void vprintf_filtered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
223 extern void vfprintf_filtered (struct ui_file *, const char *, va_list)
224 ATTRIBUTE_PRINTF (2, 0);
226 extern void fprintf_filtered (struct ui_file *, const char *, ...)
227 ATTRIBUTE_PRINTF (2, 3);
229 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...)
230 ATTRIBUTE_PRINTF (3, 4);
232 extern void printf_filtered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
234 extern void printfi_filtered (int, const char *, ...) ATTRIBUTE_PRINTF (2, 3);
236 extern void vprintf_unfiltered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
238 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list)
239 ATTRIBUTE_PRINTF (2, 0);
241 extern void fprintf_unfiltered (struct ui_file *, const char *, ...)
242 ATTRIBUTE_PRINTF (2, 3);
244 extern void printf_unfiltered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
246 extern void print_spaces (int, struct ui_file *);
248 extern void print_spaces_filtered (int, struct ui_file *);
250 extern char *n_spaces (int);
252 extern void fputstr_filtered (const char *str, int quotr,
253 struct ui_file * stream);
255 extern void fputstr_unfiltered (const char *str, int quotr,
256 struct ui_file * stream);
258 extern void fputstrn_filtered (const char *str, int n, int quotr,
259 struct ui_file * stream);
261 extern void fputstrn_unfiltered (const char *str, int n, int quotr,
262 struct ui_file * stream);
264 /* Return nonzero if filtered printing is initialized. */
265 extern int filtered_printing_initialized (void);
267 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
268 extern void gdb_print_host_address_1 (const void *addr, struct ui_file *stream);
270 /* Wrapper that avoids adding a pointless cast to all callers. */
271 #define gdb_print_host_address(ADDR, STREAM) \
272 gdb_print_host_address_1 ((const void *) ADDR, STREAM)
274 /* Convert CORE_ADDR to string in platform-specific manner.
275 This is usually formatted similar to 0x%lx. */
276 extern const char *paddress (struct gdbarch *gdbarch, CORE_ADDR addr);
278 /* Return a string representation in hexadecimal notation of ADDRESS,
279 which is suitable for printing. */
281 extern const char *print_core_address (struct gdbarch *gdbarch,
284 /* Callback hash_f and eq_f for htab_create_alloc or htab_create_alloc_ex. */
285 extern hashval_t core_addr_hash (const void *ap);
286 extern int core_addr_eq (const void *ap, const void *bp);
288 extern CORE_ADDR string_to_core_addr (const char *my_string);
290 extern void fprintf_symbol_filtered (struct ui_file *, const char *,
293 extern void throw_perror_with_name (enum errors errcode, const char *string)
296 extern void perror_warning_with_name (const char *string);
298 extern void print_sys_errmsg (const char *, int);
300 /* Warnings and error messages. */
302 extern void (*deprecated_error_begin_hook) (void);
304 /* Message to be printed before the warning message, when a warning occurs. */
306 extern char *warning_pre_print;
308 extern void error_stream (struct ui_file *) ATTRIBUTE_NORETURN;
310 extern void demangler_vwarning (const char *file, int line,
311 const char *, va_list ap)
312 ATTRIBUTE_PRINTF (3, 0);
314 extern void demangler_warning (const char *file, int line,
315 const char *, ...) ATTRIBUTE_PRINTF (3, 4);
318 /* Misc. utilities. */
320 /* Allocation and deallocation functions for the libiberty hash table
321 which use obstacks. */
322 void *hashtab_obstack_allocate (void *data, size_t size, size_t count);
323 void dummy_obstack_deallocate (void *object, void *data);
326 extern pid_t wait_to_die_with_timeout (pid_t pid, int *status, int timeout);
329 extern int producer_is_gcc_ge_4 (const char *producer);
330 extern int producer_is_gcc (const char *producer, int *major, int *minor);
332 extern int myread (int, char *, int);
334 /* Ensure that V is aligned to an N byte boundary (B's assumed to be a
335 power of 2). Round up/down when necessary. Examples of correct
338 addr = align_up (addr, 8); -- VALUE needs 8 byte alignment
339 write_memory (addr, value, len);
344 sp = align_down (sp - len, 16); -- Keep SP 16 byte aligned
345 write_memory (sp, value, len);
347 Note that uses such as:
349 write_memory (addr, value, len);
350 addr += align_up (len, 8);
354 sp -= align_up (len, 8);
355 write_memory (sp, value, len);
357 are typically not correct as they don't ensure that the address (SP
358 or ADDR) is correctly aligned (relying on previous alignment to
359 keep things right). This is also why the methods are called
360 "align_..." instead of "round_..." as the latter reads better with
361 this incorrect coding style. */
363 extern ULONGEST align_up (ULONGEST v, int n);
364 extern ULONGEST align_down (ULONGEST v, int n);
366 /* Resource limits used by getrlimit and setrlimit. */
368 enum resource_limit_kind
374 /* Check whether GDB will be able to dump core using the dump_core
375 function. Returns zero if GDB cannot or should not dump core.
376 If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
377 If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */
379 extern int can_dump_core (enum resource_limit_kind limit_kind);
381 /* Print a warning that we cannot dump core. */
383 extern void warn_cant_dump_core (const char *reason);
385 /* Dump core trying to increase the core soft limit to hard limit
388 extern void dump_core (void);
390 /* Return the hex string form of LENGTH bytes of DATA.
391 Space for the result is malloc'd, caller must free. */
393 extern char *make_hex_string (const gdb_byte *data, size_t length);