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);
85 extern struct cleanup *make_cleanup_obstack_free (struct obstack *obstack);
87 extern struct cleanup *make_cleanup_restore_integer (int *variable);
88 extern struct cleanup *make_cleanup_restore_uinteger (unsigned int *variable);
91 extern struct cleanup *make_cleanup_unpush_target (struct target_ops *ops);
93 extern struct cleanup *make_cleanup_value_free_to_mark (struct value *);
94 extern struct cleanup *make_cleanup_value_free (struct value *);
97 extern struct cleanup *make_cleanup_free_so (struct so_list *so);
99 extern struct cleanup *make_cleanup_restore_current_language (void);
101 /* A deleter for a hash table. */
104 void operator() (htab *ptr) const
110 /* A unique_ptr wrapper for htab_t. */
111 typedef std::unique_ptr<htab, htab_deleter> htab_up;
114 extern struct cleanup *make_cleanup_clear_parser_state
115 (struct parser_state **p);
117 extern void free_current_contents (void *);
119 extern void init_page_info (void);
121 extern struct cleanup *make_cleanup_restore_page_info (void);
122 extern struct cleanup *
123 set_batch_flag_and_make_cleanup_restore_page_info (void);
125 extern struct cleanup *make_bpstat_clear_actions_cleanup (void);
127 /* Path utilities. */
129 extern char *gdb_realpath (const char *);
131 extern char *gdb_realpath_keepfile (const char *);
133 extern char *gdb_abspath (const char *);
135 extern int gdb_filename_fnmatch (const char *pattern, const char *string,
138 extern void substitute_path_component (char **stringp, const char *from,
141 char *ldirname (const char *filename);
143 extern int count_path_elements (const char *path);
145 extern const char *strip_leading_path_elements (const char *path, int n);
147 /* GDB output, ui_file utilities. */
151 extern int query (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
152 extern int nquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
153 extern int yquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
155 extern void begin_line (void);
157 extern void wrap_here (const char *);
159 extern void reinitialize_more_filter (void);
161 extern int pagination_enabled;
163 extern struct ui_file **current_ui_gdb_stdout_ptr (void);
164 extern struct ui_file **current_ui_gdb_stdin_ptr (void);
165 extern struct ui_file **current_ui_gdb_stderr_ptr (void);
166 extern struct ui_file **current_ui_gdb_stdlog_ptr (void);
168 /* The current top level's ui_file streams. */
171 #define gdb_stdout (*current_ui_gdb_stdout_ptr ())
173 #define gdb_stdin (*current_ui_gdb_stdin_ptr ())
174 /* Serious error notifications */
175 #define gdb_stderr (*current_ui_gdb_stderr_ptr ())
176 /* Log/debug/trace messages that should bypass normal stdout/stderr
177 filtering. For moment, always call this stream using
178 *_unfiltered. In the very near future that restriction shall be
179 removed - either call shall be unfiltered. (cagney 1999-06-13). */
180 #define gdb_stdlog (*current_ui_gdb_stdlog_ptr ())
182 /* Truly global ui_file streams. These are all defined in main.c. */
184 /* Target output that should bypass normal stdout/stderr filtering.
185 For moment, always call this stream using *_unfiltered. In the
186 very near future that restriction shall be removed - either call
187 shall be unfiltered. (cagney 1999-07-02). */
188 extern struct ui_file *gdb_stdtarg;
189 extern struct ui_file *gdb_stdtargerr;
190 extern struct ui_file *gdb_stdtargin;
192 /* Set the screen dimensions to WIDTH and HEIGHT. */
194 extern void set_screen_width_and_height (int width, int height);
196 /* More generic printf like operations. Filtered versions may return
197 non-locally on error. */
199 extern void fputs_filtered (const char *, struct ui_file *);
201 extern void fputs_unfiltered (const char *, struct ui_file *);
203 extern int fputc_filtered (int c, struct ui_file *);
205 extern int fputc_unfiltered (int c, struct ui_file *);
207 extern int putchar_filtered (int c);
209 extern int putchar_unfiltered (int c);
211 extern void puts_filtered (const char *);
213 extern void puts_unfiltered (const char *);
215 extern void puts_filtered_tabular (char *string, int width, int right);
217 extern void puts_debug (char *prefix, char *string, char *suffix);
219 extern void vprintf_filtered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
221 extern void vfprintf_filtered (struct ui_file *, const char *, va_list)
222 ATTRIBUTE_PRINTF (2, 0);
224 extern void fprintf_filtered (struct ui_file *, const char *, ...)
225 ATTRIBUTE_PRINTF (2, 3);
227 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...)
228 ATTRIBUTE_PRINTF (3, 4);
230 extern void printf_filtered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
232 extern void printfi_filtered (int, const char *, ...) ATTRIBUTE_PRINTF (2, 3);
234 extern void vprintf_unfiltered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
236 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list)
237 ATTRIBUTE_PRINTF (2, 0);
239 extern void fprintf_unfiltered (struct ui_file *, const char *, ...)
240 ATTRIBUTE_PRINTF (2, 3);
242 extern void printf_unfiltered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
244 extern void print_spaces (int, struct ui_file *);
246 extern void print_spaces_filtered (int, struct ui_file *);
248 extern char *n_spaces (int);
250 extern void fputstr_filtered (const char *str, int quotr,
251 struct ui_file * stream);
253 extern void fputstr_unfiltered (const char *str, int quotr,
254 struct ui_file * stream);
256 extern void fputstrn_filtered (const char *str, int n, int quotr,
257 struct ui_file * stream);
259 extern void fputstrn_unfiltered (const char *str, int n, int quotr,
260 struct ui_file * stream);
262 /* Return nonzero if filtered printing is initialized. */
263 extern int filtered_printing_initialized (void);
265 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
266 extern void gdb_print_host_address_1 (const void *addr, struct ui_file *stream);
268 /* Wrapper that avoids adding a pointless cast to all callers. */
269 #define gdb_print_host_address(ADDR, STREAM) \
270 gdb_print_host_address_1 ((const void *) ADDR, STREAM)
272 /* Convert CORE_ADDR to string in platform-specific manner.
273 This is usually formatted similar to 0x%lx. */
274 extern const char *paddress (struct gdbarch *gdbarch, CORE_ADDR addr);
276 /* Return a string representation in hexadecimal notation of ADDRESS,
277 which is suitable for printing. */
279 extern const char *print_core_address (struct gdbarch *gdbarch,
282 /* Callback hash_f and eq_f for htab_create_alloc or htab_create_alloc_ex. */
283 extern hashval_t core_addr_hash (const void *ap);
284 extern int core_addr_eq (const void *ap, const void *bp);
286 extern CORE_ADDR string_to_core_addr (const char *my_string);
288 extern void fprintf_symbol_filtered (struct ui_file *, const char *,
291 extern void throw_perror_with_name (enum errors errcode, const char *string)
294 extern void perror_warning_with_name (const char *string);
296 extern void print_sys_errmsg (const char *, int);
298 /* Warnings and error messages. */
300 extern void (*deprecated_error_begin_hook) (void);
302 /* Message to be printed before the warning message, when a warning occurs. */
304 extern char *warning_pre_print;
306 extern void error_stream (struct ui_file *) ATTRIBUTE_NORETURN;
308 extern void demangler_vwarning (const char *file, int line,
309 const char *, va_list ap)
310 ATTRIBUTE_PRINTF (3, 0);
312 extern void demangler_warning (const char *file, int line,
313 const char *, ...) ATTRIBUTE_PRINTF (3, 4);
316 /* Misc. utilities. */
318 /* Allocation and deallocation functions for the libiberty hash table
319 which use obstacks. */
320 void *hashtab_obstack_allocate (void *data, size_t size, size_t count);
321 void dummy_obstack_deallocate (void *object, void *data);
324 extern pid_t wait_to_die_with_timeout (pid_t pid, int *status, int timeout);
327 extern int producer_is_gcc_ge_4 (const char *producer);
328 extern int producer_is_gcc (const char *producer, int *major, int *minor);
330 extern int myread (int, char *, int);
332 /* Ensure that V is aligned to an N byte boundary (B's assumed to be a
333 power of 2). Round up/down when necessary. Examples of correct
336 addr = align_up (addr, 8); -- VALUE needs 8 byte alignment
337 write_memory (addr, value, len);
342 sp = align_down (sp - len, 16); -- Keep SP 16 byte aligned
343 write_memory (sp, value, len);
345 Note that uses such as:
347 write_memory (addr, value, len);
348 addr += align_up (len, 8);
352 sp -= align_up (len, 8);
353 write_memory (sp, value, len);
355 are typically not correct as they don't ensure that the address (SP
356 or ADDR) is correctly aligned (relying on previous alignment to
357 keep things right). This is also why the methods are called
358 "align_..." instead of "round_..." as the latter reads better with
359 this incorrect coding style. */
361 extern ULONGEST align_up (ULONGEST v, int n);
362 extern ULONGEST align_down (ULONGEST v, int n);
364 /* Resource limits used by getrlimit and setrlimit. */
366 enum resource_limit_kind
372 /* Check whether GDB will be able to dump core using the dump_core
373 function. Returns zero if GDB cannot or should not dump core.
374 If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
375 If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */
377 extern int can_dump_core (enum resource_limit_kind limit_kind);
379 /* Print a warning that we cannot dump core. */
381 extern void warn_cant_dump_core (const char *reason);
383 /* Dump core trying to increase the core soft limit to hard limit
386 extern void dump_core (void);
388 /* Return the hex string form of LENGTH bytes of DATA.
389 Space for the result is malloc'd, caller must free. */
391 extern char *make_hex_string (const gdb_byte *data, size_t length);