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 /* A wrapper for bfd_errmsg to produce a more helpful error message
63 in the case of bfd_error_file_ambiguously recognized.
64 MATCHING, if non-NULL, is the corresponding argument to
65 bfd_check_format_matches, and will be freed. */
67 extern const char *gdb_bfd_errmsg (bfd_error_type error_tag, char **matching);
69 /* Reset the prompt_for_continue clock. */
70 void reset_prompt_for_continue_wait_time (void);
71 /* Return the time spent in prompt_for_continue. */
72 std::chrono::steady_clock::duration get_prompt_for_continue_wait_time ();
74 /* Parsing utilites. */
76 extern int parse_pid_to_attach (const char *args);
78 extern int parse_escape (struct gdbarch *, const char **);
80 char **gdb_buildargv (const char *);
82 /* Cleanup utilities. */
84 extern struct cleanup *make_cleanup_freeargv (char **);
87 extern struct cleanup *
88 make_cleanup_ui_out_redirect_pop (struct ui_out *uiout);
90 struct section_addr_info;
91 extern struct cleanup *(make_cleanup_free_section_addr_info
92 (struct section_addr_info *));
94 /* For make_cleanup_close see common/filestuff.h. */
96 extern struct cleanup *make_cleanup_fclose (FILE *file);
98 extern struct cleanup *make_cleanup_restore_integer (int *variable);
99 extern struct cleanup *make_cleanup_restore_uinteger (unsigned int *variable);
102 extern struct cleanup *make_cleanup_unpush_target (struct target_ops *ops);
104 extern struct cleanup *make_cleanup_value_free_to_mark (struct value *);
105 extern struct cleanup *make_cleanup_value_free (struct value *);
108 extern struct cleanup *make_cleanup_free_so (struct so_list *so);
110 extern struct cleanup *make_cleanup_restore_current_language (void);
112 /* A deleter for a hash table. */
115 void operator() (htab *ptr) const
121 /* A unique_ptr wrapper for htab_t. */
122 typedef std::unique_ptr<htab, htab_deleter> htab_up;
125 extern struct cleanup *make_cleanup_clear_parser_state
126 (struct parser_state **p);
128 extern void free_current_contents (void *);
130 extern void init_page_info (void);
132 extern struct cleanup *make_cleanup_restore_page_info (void);
133 extern struct cleanup *
134 set_batch_flag_and_make_cleanup_restore_page_info (void);
136 extern struct cleanup *make_bpstat_clear_actions_cleanup (void);
138 /* Path utilities. */
140 extern char *gdb_realpath (const char *);
142 extern char *gdb_realpath_keepfile (const char *);
144 extern char *gdb_abspath (const char *);
146 extern int gdb_filename_fnmatch (const char *pattern, const char *string,
149 extern void substitute_path_component (char **stringp, const char *from,
152 std::string ldirname (const char *filename);
154 extern int count_path_elements (const char *path);
156 extern const char *strip_leading_path_elements (const char *path, int n);
158 /* GDB output, ui_file utilities. */
162 extern int query (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
163 extern int nquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
164 extern int yquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
166 extern void begin_line (void);
168 extern void wrap_here (const char *);
170 extern void reinitialize_more_filter (void);
172 extern int pagination_enabled;
174 extern struct ui_file **current_ui_gdb_stdout_ptr (void);
175 extern struct ui_file **current_ui_gdb_stdin_ptr (void);
176 extern struct ui_file **current_ui_gdb_stderr_ptr (void);
177 extern struct ui_file **current_ui_gdb_stdlog_ptr (void);
179 /* The current top level's ui_file streams. */
182 #define gdb_stdout (*current_ui_gdb_stdout_ptr ())
184 #define gdb_stdin (*current_ui_gdb_stdin_ptr ())
185 /* Serious error notifications */
186 #define gdb_stderr (*current_ui_gdb_stderr_ptr ())
187 /* Log/debug/trace messages that should bypass normal stdout/stderr
188 filtering. For moment, always call this stream using
189 *_unfiltered. In the very near future that restriction shall be
190 removed - either call shall be unfiltered. (cagney 1999-06-13). */
191 #define gdb_stdlog (*current_ui_gdb_stdlog_ptr ())
193 /* Truly global ui_file streams. These are all defined in main.c. */
195 /* Target output that should bypass normal stdout/stderr filtering.
196 For moment, always call this stream using *_unfiltered. In the
197 very near future that restriction shall be removed - either call
198 shall be unfiltered. (cagney 1999-07-02). */
199 extern struct ui_file *gdb_stdtarg;
200 extern struct ui_file *gdb_stdtargerr;
201 extern struct ui_file *gdb_stdtargin;
203 /* Set the screen dimensions to WIDTH and HEIGHT. */
205 extern void set_screen_width_and_height (int width, int height);
207 /* More generic printf like operations. Filtered versions may return
208 non-locally on error. */
210 extern void fputs_filtered (const char *, struct ui_file *);
212 extern void fputs_unfiltered (const char *, struct ui_file *);
214 extern int fputc_filtered (int c, struct ui_file *);
216 extern int fputc_unfiltered (int c, struct ui_file *);
218 extern int putchar_filtered (int c);
220 extern int putchar_unfiltered (int c);
222 extern void puts_filtered (const char *);
224 extern void puts_unfiltered (const char *);
226 extern void puts_filtered_tabular (char *string, int width, int right);
228 extern void puts_debug (char *prefix, char *string, char *suffix);
230 extern void vprintf_filtered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
232 extern void vfprintf_filtered (struct ui_file *, const char *, va_list)
233 ATTRIBUTE_PRINTF (2, 0);
235 extern void fprintf_filtered (struct ui_file *, const char *, ...)
236 ATTRIBUTE_PRINTF (2, 3);
238 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...)
239 ATTRIBUTE_PRINTF (3, 4);
241 extern void printf_filtered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
243 extern void printfi_filtered (int, const char *, ...) ATTRIBUTE_PRINTF (2, 3);
245 extern void vprintf_unfiltered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
247 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list)
248 ATTRIBUTE_PRINTF (2, 0);
250 extern void fprintf_unfiltered (struct ui_file *, const char *, ...)
251 ATTRIBUTE_PRINTF (2, 3);
253 extern void printf_unfiltered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
255 extern void print_spaces (int, struct ui_file *);
257 extern void print_spaces_filtered (int, struct ui_file *);
259 extern char *n_spaces (int);
261 extern void fputstr_filtered (const char *str, int quotr,
262 struct ui_file * stream);
264 extern void fputstr_unfiltered (const char *str, int quotr,
265 struct ui_file * stream);
267 extern void fputstrn_filtered (const char *str, int n, int quotr,
268 struct ui_file * stream);
270 extern void fputstrn_unfiltered (const char *str, int n, int quotr,
271 struct ui_file * stream);
273 /* Return nonzero if filtered printing is initialized. */
274 extern int filtered_printing_initialized (void);
276 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
277 extern void gdb_print_host_address_1 (const void *addr, struct ui_file *stream);
279 /* Wrapper that avoids adding a pointless cast to all callers. */
280 #define gdb_print_host_address(ADDR, STREAM) \
281 gdb_print_host_address_1 ((const void *) ADDR, STREAM)
283 /* Convert CORE_ADDR to string in platform-specific manner.
284 This is usually formatted similar to 0x%lx. */
285 extern const char *paddress (struct gdbarch *gdbarch, CORE_ADDR addr);
287 /* Return a string representation in hexadecimal notation of ADDRESS,
288 which is suitable for printing. */
290 extern const char *print_core_address (struct gdbarch *gdbarch,
293 /* Callback hash_f and eq_f for htab_create_alloc or htab_create_alloc_ex. */
294 extern hashval_t core_addr_hash (const void *ap);
295 extern int core_addr_eq (const void *ap, const void *bp);
297 extern CORE_ADDR string_to_core_addr (const char *my_string);
299 extern void fprintf_symbol_filtered (struct ui_file *, const char *,
302 extern void throw_perror_with_name (enum errors errcode, const char *string)
305 extern void perror_warning_with_name (const char *string);
307 extern void print_sys_errmsg (const char *, int);
309 /* Warnings and error messages. */
311 extern void (*deprecated_error_begin_hook) (void);
313 /* Message to be printed before the warning message, when a warning occurs. */
315 extern const char *warning_pre_print;
317 extern void error_stream (const string_file &) ATTRIBUTE_NORETURN;
319 extern void demangler_vwarning (const char *file, int line,
320 const char *, va_list ap)
321 ATTRIBUTE_PRINTF (3, 0);
323 extern void demangler_warning (const char *file, int line,
324 const char *, ...) ATTRIBUTE_PRINTF (3, 4);
327 /* Misc. utilities. */
329 /* Allocation and deallocation functions for the libiberty hash table
330 which use obstacks. */
331 void *hashtab_obstack_allocate (void *data, size_t size, size_t count);
332 void dummy_obstack_deallocate (void *object, void *data);
335 extern pid_t wait_to_die_with_timeout (pid_t pid, int *status, int timeout);
338 extern int producer_is_gcc_ge_4 (const char *producer);
339 extern int producer_is_gcc (const char *producer, int *major, int *minor);
341 extern int myread (int, char *, int);
343 /* Ensure that V is aligned to an N byte boundary (B's assumed to be a
344 power of 2). Round up/down when necessary. Examples of correct
347 addr = align_up (addr, 8); -- VALUE needs 8 byte alignment
348 write_memory (addr, value, len);
353 sp = align_down (sp - len, 16); -- Keep SP 16 byte aligned
354 write_memory (sp, value, len);
356 Note that uses such as:
358 write_memory (addr, value, len);
359 addr += align_up (len, 8);
363 sp -= align_up (len, 8);
364 write_memory (sp, value, len);
366 are typically not correct as they don't ensure that the address (SP
367 or ADDR) is correctly aligned (relying on previous alignment to
368 keep things right). This is also why the methods are called
369 "align_..." instead of "round_..." as the latter reads better with
370 this incorrect coding style. */
372 extern ULONGEST align_up (ULONGEST v, int n);
373 extern ULONGEST align_down (ULONGEST v, int n);
375 /* Resource limits used by getrlimit and setrlimit. */
377 enum resource_limit_kind
383 /* Check whether GDB will be able to dump core using the dump_core
384 function. Returns zero if GDB cannot or should not dump core.
385 If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
386 If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */
388 extern int can_dump_core (enum resource_limit_kind limit_kind);
390 /* Print a warning that we cannot dump core. */
392 extern void warn_cant_dump_core (const char *reason);
394 /* Dump core trying to increase the core soft limit to hard limit
397 extern void dump_core (void);
399 /* Return the hex string form of LENGTH bytes of DATA.
400 Space for the result is malloc'd, caller must free. */
402 extern char *make_hex_string (const gdb_byte *data, size_t length);