gdb/utils.h - gdb

Data types defined

Macros defined

Source code

  1. /* *INDENT-OFF* */ /* ATTRIBUTE_PRINTF confuses indent, avoid running it
  2.                       for now.  */
  3. /* I/O, string, cleanup, and other random utilities for GDB.
  4.    Copyright (C) 1986-2015 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/>.  */

  21. #ifndef UTILS_H
  22. ‌#define UTILS_H

  24. #include "exceptions.h"

  26. extern void initialize_utils (void);

  28. /* String utilities.  */

  30. extern int sevenbit_strings;

  32. extern int strcmp_iw (const char *, const char *);

  34. extern int strcmp_iw_ordered (const char *, const char *);

  36. extern int streq (const char *, const char *);

  38. extern int subset_compare (char *, char *);

  40. ULONGEST strtoulst (const char *num, const char **trailer, int base);

  42. int compare_positive_ints (const void *ap, const void *bp);
  43. int compare_strings (const void *ap, const void *bp);

  45. /* This is defined in *-hdep.c, e.g., posix-hdep.c.  */
  46. extern char *safe_strerror (int);

  48. /* A wrapper for bfd_errmsg to produce a more helpful error message
  49.    in the case of bfd_error_file_ambiguously recognized.
  50.    MATCHING, if non-NULL, is the corresponding argument to
  51.    bfd_check_format_matches, and will be freed.  */

  53. extern const char *gdb_bfd_errmsg (bfd_error_type error_tag, char **matching);

  55. /* Reset the prompt_for_continue clock.  */
  56. void reset_prompt_for_continue_wait_time (void);
  57. /* Return the time spent in prompt_for_continue.  */
  58. struct timeval get_prompt_for_continue_wait_time (void);

  60. /* Parsing utilites.  */

  62. extern int parse_pid_to_attach (const char *args);

  64. extern int parse_escape (struct gdbarch *, const char **);

  66. char **gdb_buildargv (const char *);

  68. /* Cleanup utilities.  */

  70. extern struct cleanup *make_cleanup_freeargv (char **);

  72. struct dyn_string;
  73. extern struct cleanup *make_cleanup_dyn_string_delete (struct dyn_string *);

  75. struct ui_file;
  76. extern struct cleanup *make_cleanup_ui_file_delete (struct ui_file *);

  78. struct ui_out;
  79. extern struct cleanup *
  80.   make_cleanup_ui_out_redirect_pop (struct ui_out *uiout);

  82. struct section_addr_info;
  83. extern struct cleanup *(make_cleanup_free_section_addr_info
  84.                         (struct section_addr_info *));

  86. extern struct cleanup *make_cleanup_close (int fd);

  88. extern struct cleanup *make_cleanup_fclose (FILE *file);

  90. extern struct cleanup *make_cleanup_bfd_unref (bfd *abfd);

  92. struct obstack;
  93. extern struct cleanup *make_cleanup_obstack_free (struct obstack *obstack);

  95. extern struct cleanup *make_cleanup_restore_integer (int *variable);
  96. extern struct cleanup *make_cleanup_restore_uinteger (unsigned int *variable);

  98. struct target_ops;
  99. extern struct cleanup *make_cleanup_unpush_target (struct target_ops *ops);

  101. extern struct cleanup *
  102.   make_cleanup_restore_ui_file (struct ui_file **variable);

  104. extern struct cleanup *make_cleanup_value_free_to_mark (struct value *);
  105. extern struct cleanup *make_cleanup_value_free (struct value *);

  107. struct so_list;
  108. extern struct cleanup *make_cleanup_free_so (struct so_list *so);

  110. extern struct cleanup *make_cleanup_restore_current_language (void);

  112. extern struct cleanup *make_cleanup_htab_delete (htab_t htab);

  114. struct parser_state;
  115. extern struct cleanup *make_cleanup_clear_parser_state
  116.   (struct parser_state **p);

  118. extern void free_current_contents (void *);

  120. extern void init_page_info (void);

  122. extern struct cleanup *make_cleanup_restore_page_info (void);
  123. extern struct cleanup *
  124.   set_batch_flag_and_make_cleanup_restore_page_info (void);

  126. extern struct cleanup *make_bpstat_clear_actions_cleanup (void);

  128. /* Path utilities.  */

  130. extern char *gdb_realpath (const char *);

  132. extern char *gdb_realpath_keepfile (const char *);

  134. extern char *gdb_abspath (const char *);

  136. extern int gdb_filename_fnmatch (const char *pattern, const char *string,
  137.                                  int flags);

  139. extern void substitute_path_component (char **stringp, const char *from,
  140.                                        const char *to);

  142. char *ldirname (const char *filename);

  144. /* GDB output, ui_file utilities.  */

  146. struct ui_file;

  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 (char *);

  156. extern void reinitialize_more_filter (void);

  158. extern int pagination_enabled;

  160. /* Global ui_file streams.  These are all defined in main.c.  */
  161. /* Normal results */
  162. extern struct ui_file *gdb_stdout;
  163. /* Input stream */
  164. extern struct ui_file *gdb_stdin;
  165. /* Serious error notifications */
  166. extern struct ui_file *gdb_stderr;
  167. /* Log/debug/trace messages that should bypass normal stdout/stderr
  168.    filtering.  For moment, always call this stream using
  169.    *_unfiltered.  In the very near future that restriction shall be
  170.    removed - either call shall be unfiltered.  (cagney 1999-06-13).  */
  171. extern struct ui_file *gdb_stdlog;
  172. /* Target output that should bypass normal stdout/stderr filtering.
  173.    For moment, always call this stream using *_unfiltered.  In the
  174.    very near future that restriction shall be removed - either call
  175.    shall be unfiltered.  (cagney 1999-07-02).  */
  176. extern struct ui_file *gdb_stdtarg;
  177. extern struct ui_file *gdb_stdtargerr;
  178. extern struct ui_file *gdb_stdtargin;

  180. /* More generic printf like operations.  Filtered versions may return
  181.    non-locally on error.  */

  183. extern void fputs_filtered (const char *, struct ui_file *);

  185. extern void fputs_unfiltered (const char *, struct ui_file *);

  187. extern int fputc_filtered (int c, struct ui_file *);

  189. extern int fputc_unfiltered (int c, struct ui_file *);

  191. extern int putchar_filtered (int c);

  193. extern int putchar_unfiltered (int c);

  195. extern void puts_filtered (const char *);

  197. extern void puts_unfiltered (const char *);

  199. extern void puts_filtered_tabular (char *string, int width, int right);

  201. extern void puts_debug (char *prefix, char *string, char *suffix);

  203. extern void vprintf_filtered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);

  205. extern void vfprintf_filtered (struct ui_file *, const char *, va_list)
  206.   ATTRIBUTE_PRINTF (2, 0);

  208. extern void fprintf_filtered (struct ui_file *, const char *, ...)
  209.   ATTRIBUTE_PRINTF (2, 3);

  211. extern void fprintfi_filtered (int, struct ui_file *, const char *, ...)
  212.   ATTRIBUTE_PRINTF (3, 4);

  214. extern void printf_filtered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);

  216. extern void printfi_filtered (int, const char *, ...) ATTRIBUTE_PRINTF (2, 3);

  218. extern void vprintf_unfiltered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);

  220. extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list)
  221.   ATTRIBUTE_PRINTF (2, 0);

  223. extern void fprintf_unfiltered (struct ui_file *, const char *, ...)
  224.   ATTRIBUTE_PRINTF (2, 3);

  226. extern void printf_unfiltered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);

  228. extern void print_spaces (int, struct ui_file *);

  230. extern void print_spaces_filtered (int, struct ui_file *);

  232. extern char *n_spaces (int);

  234. extern void fputstr_filtered (const char *str, int quotr,
  235.                               struct ui_file * stream);

  237. extern void fputstr_unfiltered (const char *str, int quotr,
  238.                                 struct ui_file * stream);

  240. extern void fputstrn_filtered (const char *str, int n, int quotr,
  241.                                struct ui_file * stream);

  243. extern void fputstrn_unfiltered (const char *str, int n, int quotr,
  244.                                  struct ui_file * stream);

  246. /* Return nonzero if filtered printing is initialized.  */
  247. extern int filtered_printing_initialized (void);

  249. /* Display the host ADDR on STREAM formatted as ``0x%x''.  */
  250. extern void gdb_print_host_address (const void *addr, struct ui_file *stream);

  252. /* Convert CORE_ADDR to string in platform-specific manner.
  253.    This is usually formatted similar to 0x%lx.  */
  254. extern const char *paddress (struct gdbarch *gdbarch, CORE_ADDR addr);

  256. /* Return a string representation in hexadecimal notation of ADDRESS,
  257.    which is suitable for printing.  */

  259. extern const char *print_core_address (struct gdbarch *gdbarch,
  260.                                        CORE_ADDR address);

  262. /* Callback hash_f and eq_f for htab_create_alloc or htab_create_alloc_ex.  */
  263. extern hashval_t core_addr_hash (const void *ap);
  264. extern int core_addr_eq (const void *ap, const void *bp);

  266. extern CORE_ADDR string_to_core_addr (const char *my_string);

  268. extern void fprintf_symbol_filtered (struct ui_file *, const char *,
  269.                                      enum language, int);

  271. extern void throw_perror_with_name (enum errors errcode, const char *string)
  272.   ATTRIBUTE_NORETURN;

  274. extern void perror_warning_with_name (const char *string);

  276. extern void print_sys_errmsg (const char *, int);

  278. /* Warnings and error messages.  */

  280. extern void (*deprecated_error_begin_hook) (void);

  282. /* Message to be printed before the warning message, when a warning occurs.  */

  284. extern char *warning_pre_print;

  286. extern void error_stream (struct ui_file *) ATTRIBUTE_NORETURN;

  288. extern void demangler_vwarning (const char *file, int line,
  289.                                const char *, va_list ap)
  290.      ATTRIBUTE_PRINTF (3, 0);

  292. extern void demangler_warning (const char *file, int line,
  293.                               const char *, ...) ATTRIBUTE_PRINTF (3, 4);


  296. /* Misc. utilities.  */

  298. /* Allocation and deallocation functions for the libiberty hash table
  299.    which use obstacks.  */
  300. void *hashtab_obstack_allocate (void *data, size_t size, size_t count);
  301. void dummy_obstack_deallocate (void *object, void *data);

  303. #ifdef HAVE_WAITPID
  304. extern pid_t wait_to_die_with_timeout (pid_t pid, int *status, int timeout);
  305. #endif

  307. extern int producer_is_gcc_ge_4 (const char *producer);

  309. extern int myread (int, char *, int);

  311. /* Ensure that V is aligned to an N byte boundary (B's assumed to be a
  312.    power of 2).  Round up/down when necessary.  Examples of correct
  313.    use include:

  315.    addr = align_up (addr, 8); -- VALUE needs 8 byte alignment
  316.    write_memory (addr, value, len);
  317.    addr += len;

  319.    and:

  321.    sp = align_down (sp - len, 16); -- Keep SP 16 byte aligned
  322.    write_memory (sp, value, len);

  324.    Note that uses such as:

  326.    write_memory (addr, value, len);
  327.    addr += align_up (len, 8);

  329.    and:

  331.    sp -= align_up (len, 8);
  332.    write_memory (sp, value, len);

  334.    are typically not correct as they don't ensure that the address (SP
  335.    or ADDR) is correctly aligned (relying on previous alignment to
  336.    keep things right).  This is also why the methods are called
  337.    "align_..." instead of "round_..." as the latter reads better with
  338.    this incorrect coding style.  */

  340. extern ULONGEST align_up (ULONGEST v, int n);
  341. extern ULONGEST align_down (ULONGEST v, int n);

  343. /* Resource limits used by getrlimit and setrlimit.  */

  345. ‌enum resource_limit_kind
  346.   {
  347.     LIMIT_CUR,
  348.     LIMIT_MAX
  349.   };

  351. /* Check whether GDB will be able to dump core using the dump_core
  352.    function.  Returns zero if GDB cannot or should not dump core.
  353.    If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
  354.    If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected.  */

  356. extern int can_dump_core (enum resource_limit_kind limit_kind);

  358. /* Print a warning that we cannot dump core.  */

  360. extern void warn_cant_dump_core (const char *reason);

  362. /* Dump core trying to increase the core soft limit to hard limit
  363.    first.  */

  365. extern void dump_core (void);

  367. /* Return the hex string form of LENGTH bytes of DATA.
  368.    Space for the result is malloc'd, caller must free.  */

  370. extern char *make_hex_string (const gdb_byte *data, size_t length);

  372. #endif /* UTILS_H */