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 *
71 make_cleanup_ui_out_redirect_pop (struct ui_out *uiout);
73 struct section_addr_info;
74 extern struct cleanup *(make_cleanup_free_section_addr_info
75 (struct section_addr_info *));
77 /* For make_cleanup_close see common/filestuff.h. */
79 extern struct cleanup *make_cleanup_fclose (FILE *file);
82 extern struct cleanup *make_cleanup_obstack_free (struct obstack *obstack);
84 extern struct cleanup *make_cleanup_restore_integer (int *variable);
85 extern struct cleanup *make_cleanup_restore_uinteger (unsigned int *variable);
88 extern struct cleanup *make_cleanup_unpush_target (struct target_ops *ops);
90 extern struct cleanup *make_cleanup_value_free_to_mark (struct value *);
91 extern struct cleanup *make_cleanup_value_free (struct value *);
94 extern struct cleanup *make_cleanup_free_so (struct so_list *so);
96 extern struct cleanup *make_cleanup_restore_current_language (void);
98 /* A deleter for a hash table. */
101 void operator() (htab *ptr) const
107 /* A unique_ptr wrapper for htab_t. */
108 typedef std::unique_ptr<htab, htab_deleter> htab_up;
111 extern struct cleanup *make_cleanup_clear_parser_state
112 (struct parser_state **p);
114 extern void free_current_contents (void *);
116 extern void init_page_info (void);
118 extern struct cleanup *make_cleanup_restore_page_info (void);
119 extern struct cleanup *
120 set_batch_flag_and_make_cleanup_restore_page_info (void);
122 extern struct cleanup *make_bpstat_clear_actions_cleanup (void);
124 /* Path utilities. */
126 extern char *gdb_realpath (const char *);
128 extern char *gdb_realpath_keepfile (const char *);
130 extern char *gdb_abspath (const char *);
132 extern int gdb_filename_fnmatch (const char *pattern, const char *string,
135 extern void substitute_path_component (char **stringp, const char *from,
138 char *ldirname (const char *filename);
140 extern int count_path_elements (const char *path);
142 extern const char *strip_leading_path_elements (const char *path, int n);
144 /* GDB output, ui_file utilities. */
148 extern int query (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
149 extern int nquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
150 extern int yquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
152 extern void begin_line (void);
154 extern void wrap_here (const char *);
156 extern void reinitialize_more_filter (void);
158 extern int pagination_enabled;
160 extern struct ui_file **current_ui_gdb_stdout_ptr (void);
161 extern struct ui_file **current_ui_gdb_stdin_ptr (void);
162 extern struct ui_file **current_ui_gdb_stderr_ptr (void);
163 extern struct ui_file **current_ui_gdb_stdlog_ptr (void);
165 /* The current top level's ui_file streams. */
168 #define gdb_stdout (*current_ui_gdb_stdout_ptr ())
170 #define gdb_stdin (*current_ui_gdb_stdin_ptr ())
171 /* Serious error notifications */
172 #define gdb_stderr (*current_ui_gdb_stderr_ptr ())
173 /* Log/debug/trace messages that should bypass normal stdout/stderr
174 filtering. For moment, always call this stream using
175 *_unfiltered. In the very near future that restriction shall be
176 removed - either call shall be unfiltered. (cagney 1999-06-13). */
177 #define gdb_stdlog (*current_ui_gdb_stdlog_ptr ())
179 /* Truly global ui_file streams. These are all defined in main.c. */
181 /* Target output that should bypass normal stdout/stderr filtering.
182 For moment, always call this stream using *_unfiltered. In the
183 very near future that restriction shall be removed - either call
184 shall be unfiltered. (cagney 1999-07-02). */
185 extern struct ui_file *gdb_stdtarg;
186 extern struct ui_file *gdb_stdtargerr;
187 extern struct ui_file *gdb_stdtargin;
189 /* Set the screen dimensions to WIDTH and HEIGHT. */
191 extern void set_screen_width_and_height (int width, int height);
193 /* More generic printf like operations. Filtered versions may return
194 non-locally on error. */
196 extern void fputs_filtered (const char *, struct ui_file *);
198 extern void fputs_unfiltered (const char *, struct ui_file *);
200 extern int fputc_filtered (int c, struct ui_file *);
202 extern int fputc_unfiltered (int c, struct ui_file *);
204 extern int putchar_filtered (int c);
206 extern int putchar_unfiltered (int c);
208 extern void puts_filtered (const char *);
210 extern void puts_unfiltered (const char *);
212 extern void puts_filtered_tabular (char *string, int width, int right);
214 extern void puts_debug (char *prefix, char *string, char *suffix);
216 extern void vprintf_filtered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
218 extern void vfprintf_filtered (struct ui_file *, const char *, va_list)
219 ATTRIBUTE_PRINTF (2, 0);
221 extern void fprintf_filtered (struct ui_file *, const char *, ...)
222 ATTRIBUTE_PRINTF (2, 3);
224 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...)
225 ATTRIBUTE_PRINTF (3, 4);
227 extern void printf_filtered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
229 extern void printfi_filtered (int, const char *, ...) ATTRIBUTE_PRINTF (2, 3);
231 extern void vprintf_unfiltered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
233 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list)
234 ATTRIBUTE_PRINTF (2, 0);
236 extern void fprintf_unfiltered (struct ui_file *, const char *, ...)
237 ATTRIBUTE_PRINTF (2, 3);
239 extern void printf_unfiltered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
241 extern void print_spaces (int, struct ui_file *);
243 extern void print_spaces_filtered (int, struct ui_file *);
245 extern char *n_spaces (int);
247 extern void fputstr_filtered (const char *str, int quotr,
248 struct ui_file * stream);
250 extern void fputstr_unfiltered (const char *str, int quotr,
251 struct ui_file * stream);
253 extern void fputstrn_filtered (const char *str, int n, int quotr,
254 struct ui_file * stream);
256 extern void fputstrn_unfiltered (const char *str, int n, int quotr,
257 struct ui_file * stream);
259 /* Return nonzero if filtered printing is initialized. */
260 extern int filtered_printing_initialized (void);
262 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
263 extern void gdb_print_host_address_1 (const void *addr, struct ui_file *stream);
265 /* Wrapper that avoids adding a pointless cast to all callers. */
266 #define gdb_print_host_address(ADDR, STREAM) \
267 gdb_print_host_address_1 ((const void *) ADDR, STREAM)
269 /* Convert CORE_ADDR to string in platform-specific manner.
270 This is usually formatted similar to 0x%lx. */
271 extern const char *paddress (struct gdbarch *gdbarch, CORE_ADDR addr);
273 /* Return a string representation in hexadecimal notation of ADDRESS,
274 which is suitable for printing. */
276 extern const char *print_core_address (struct gdbarch *gdbarch,
279 /* Callback hash_f and eq_f for htab_create_alloc or htab_create_alloc_ex. */
280 extern hashval_t core_addr_hash (const void *ap);
281 extern int core_addr_eq (const void *ap, const void *bp);
283 extern CORE_ADDR string_to_core_addr (const char *my_string);
285 extern void fprintf_symbol_filtered (struct ui_file *, const char *,
288 extern void throw_perror_with_name (enum errors errcode, const char *string)
291 extern void perror_warning_with_name (const char *string);
293 extern void print_sys_errmsg (const char *, int);
295 /* Warnings and error messages. */
297 extern void (*deprecated_error_begin_hook) (void);
299 /* Message to be printed before the warning message, when a warning occurs. */
301 extern char *warning_pre_print;
303 extern void error_stream (const string_file &) ATTRIBUTE_NORETURN;
305 extern void demangler_vwarning (const char *file, int line,
306 const char *, va_list ap)
307 ATTRIBUTE_PRINTF (3, 0);
309 extern void demangler_warning (const char *file, int line,
310 const char *, ...) ATTRIBUTE_PRINTF (3, 4);
313 /* Misc. utilities. */
315 /* Allocation and deallocation functions for the libiberty hash table
316 which use obstacks. */
317 void *hashtab_obstack_allocate (void *data, size_t size, size_t count);
318 void dummy_obstack_deallocate (void *object, void *data);
321 extern pid_t wait_to_die_with_timeout (pid_t pid, int *status, int timeout);
324 extern int producer_is_gcc_ge_4 (const char *producer);
325 extern int producer_is_gcc (const char *producer, int *major, int *minor);
327 extern int myread (int, char *, int);
329 /* Ensure that V is aligned to an N byte boundary (B's assumed to be a
330 power of 2). Round up/down when necessary. Examples of correct
333 addr = align_up (addr, 8); -- VALUE needs 8 byte alignment
334 write_memory (addr, value, len);
339 sp = align_down (sp - len, 16); -- Keep SP 16 byte aligned
340 write_memory (sp, value, len);
342 Note that uses such as:
344 write_memory (addr, value, len);
345 addr += align_up (len, 8);
349 sp -= align_up (len, 8);
350 write_memory (sp, value, len);
352 are typically not correct as they don't ensure that the address (SP
353 or ADDR) is correctly aligned (relying on previous alignment to
354 keep things right). This is also why the methods are called
355 "align_..." instead of "round_..." as the latter reads better with
356 this incorrect coding style. */
358 extern ULONGEST align_up (ULONGEST v, int n);
359 extern ULONGEST align_down (ULONGEST v, int n);
361 /* Resource limits used by getrlimit and setrlimit. */
363 enum resource_limit_kind
369 /* Check whether GDB will be able to dump core using the dump_core
370 function. Returns zero if GDB cannot or should not dump core.
371 If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
372 If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */
374 extern int can_dump_core (enum resource_limit_kind limit_kind);
376 /* Print a warning that we cannot dump core. */
378 extern void warn_cant_dump_core (const char *reason);
380 /* Dump core trying to increase the core soft limit to hard limit
383 extern void dump_core (void);
385 /* Return the hex string form of LENGTH bytes of DATA.
386 Space for the result is malloc'd, caller must free. */
388 extern char *make_hex_string (const gdb_byte *data, size_t length);