gdb/utils.h

   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) 1986-2014 Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   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.
  12
  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.
  17
  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/>.  */
  20
  21 #ifndef UTILS_H
  22 #define UTILS_H
  23
  24 #include "cleanups.h"
  25 #include "exceptions.h"
  26 #include "print-utils.h"
  27
  28 extern void initialize_utils (void);
  29
  30 /* String utilities.  */
  31
  32 extern int sevenbit_strings;
  33
  34 extern int strcmp_iw (const char *, const char *);
  35
  36 extern int strcmp_iw_ordered (const char *, const char *);
  37
  38 extern int streq (const char *, const char *);
  39
  40 extern int subset_compare (char *, char *);
  41
  42 ULONGEST strtoulst (const char *num, const char **trailer, int base);
  43
  44 int compare_positive_ints (const void *ap, const void *bp);
  45 int compare_strings (const void *ap, const void *bp);
  46
  47 /* This is defined in *-hdep.c, e.g., posix-hdep.c.  */
  48 extern char *safe_strerror (int);
  49
  50 /* A wrapper for bfd_errmsg to produce a more helpful error message
  51    in the case of bfd_error_file_ambiguously recognized.
  52    MATCHING, if non-NULL, is the corresponding argument to
  53    bfd_check_format_matches, and will be freed.  */
  54
  55 extern const char *gdb_bfd_errmsg (bfd_error_type error_tag, char **matching);
  56
  57 /* Reset the prompt_for_continue clock.  */
  58 void reset_prompt_for_continue_wait_time (void);
  59 /* Return the time spent in prompt_for_continue.  */
  60 struct timeval get_prompt_for_continue_wait_time (void);
  61 \f
  62 /* Parsing utilites.  */
  63
  64 extern int parse_pid_to_attach (const char *args);
  65
  66 extern int parse_escape (struct gdbarch *, const char **);
  67
  68 char **gdb_buildargv (const char *);
  69 \f
  70 /* Cleanup utilities.  */
  71
  72 extern struct cleanup *make_cleanup_freeargv (char **);
  73
  74 struct dyn_string;
  75 extern struct cleanup *make_cleanup_dyn_string_delete (struct dyn_string *);
  76
  77 struct ui_file;
  78 extern struct cleanup *make_cleanup_ui_file_delete (struct ui_file *);
  79
  80 struct ui_out;
  81 extern struct cleanup *
  82   make_cleanup_ui_out_redirect_pop (struct ui_out *uiout);
  83
  84 struct section_addr_info;
  85 extern struct cleanup *(make_cleanup_free_section_addr_info
  86                         (struct section_addr_info *));
  87
  88 extern struct cleanup *make_cleanup_close (int fd);
  89
  90 extern struct cleanup *make_cleanup_fclose (FILE *file);
  91
  92 extern struct cleanup *make_cleanup_bfd_unref (bfd *abfd);
  93
  94 struct obstack;
  95 extern struct cleanup *make_cleanup_obstack_free (struct obstack *obstack);
  96
  97 extern struct cleanup *make_cleanup_restore_integer (int *variable);
  98 extern struct cleanup *make_cleanup_restore_uinteger (unsigned int *variable);
  99
 100 struct target_ops;
 101 extern struct cleanup *make_cleanup_unpush_target (struct target_ops *ops);
 102
 103 extern struct cleanup *
 104   make_cleanup_restore_ui_file (struct ui_file **variable);
 105
 106 extern struct cleanup *make_cleanup_value_free_to_mark (struct value *);
 107 extern struct cleanup *make_cleanup_value_free (struct value *);
 108
 109 struct so_list;
 110 extern struct cleanup *make_cleanup_free_so (struct so_list *so);
 111
 112 extern struct cleanup *make_cleanup_restore_current_language (void);
 113
 114 extern struct cleanup *make_cleanup_htab_delete (htab_t htab);
 115
 116 struct parser_state;
 117 extern struct cleanup *make_cleanup_clear_parser_state
 118   (struct parser_state **p);
 119
 120 extern void free_current_contents (void *);
 121
 122 extern void init_page_info (void);
 123
 124 extern struct cleanup *make_cleanup_restore_page_info (void);
 125 extern struct cleanup *
 126   set_batch_flag_and_make_cleanup_restore_page_info (void);
 127
 128 extern struct cleanup *make_bpstat_clear_actions_cleanup (void);
 129 \f
 130 /* Path utilities.  */
 131
 132 extern char *gdb_realpath (const char *);
 133
 134 extern char *gdb_realpath_keepfile (const char *);
 135
 136 extern char *gdb_abspath (const char *);
 137
 138 extern int gdb_filename_fnmatch (const char *pattern, const char *string,
 139                                  int flags);
 140
 141 extern void substitute_path_component (char **stringp, const char *from,
 142                                        const char *to);
 143
 144 char *ldirname (const char *filename);
 145 \f
 146 /* GDB output, ui_file utilities.  */
 147
 148 struct ui_file;
 149
 150 extern int query (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 151 extern int nquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 152 extern int yquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 153
 154 extern void begin_line (void);
 155
 156 extern void wrap_here (char *);
 157
 158 extern void reinitialize_more_filter (void);
 159
 160 extern int pagination_enabled;
 161
 162 /* Global ui_file streams.  These are all defined in main.c.  */
 163 /* Normal results */
 164 extern struct ui_file *gdb_stdout;
 165 /* Input stream */
 166 extern struct ui_file *gdb_stdin;
 167 /* Serious error notifications */
 168 extern struct ui_file *gdb_stderr;
 169 /* Log/debug/trace messages that should bypass normal stdout/stderr
 170    filtering.  For moment, always call this stream using
 171    *_unfiltered.  In the very near future that restriction shall be
 172    removed - either call shall be unfiltered.  (cagney 1999-06-13).  */
 173 extern struct ui_file *gdb_stdlog;
 174 /* Target output that should bypass normal stdout/stderr filtering.
 175    For moment, always call this stream using *_unfiltered.  In the
 176    very near future that restriction shall be removed - either call
 177    shall be unfiltered.  (cagney 1999-07-02).  */
 178 extern struct ui_file *gdb_stdtarg;
 179 extern struct ui_file *gdb_stdtargerr;
 180 extern struct ui_file *gdb_stdtargin;
 181
 182 /* More generic printf like operations.  Filtered versions may return
 183    non-locally on error.  */
 184
 185 extern void fputs_filtered (const char *, struct ui_file *);
 186
 187 extern void fputs_unfiltered (const char *, struct ui_file *);
 188
 189 extern int fputc_filtered (int c, struct ui_file *);
 190
 191 extern int fputc_unfiltered (int c, struct ui_file *);
 192
 193 extern int putchar_filtered (int c);
 194
 195 extern int putchar_unfiltered (int c);
 196
 197 extern void puts_filtered (const char *);
 198
 199 extern void puts_unfiltered (const char *);
 200
 201 extern void puts_filtered_tabular (char *string, int width, int right);
 202
 203 extern void puts_debug (char *prefix, char *string, char *suffix);
 204
 205 extern void vprintf_filtered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
 206
 207 extern void vfprintf_filtered (struct ui_file *, const char *, va_list)
 208   ATTRIBUTE_PRINTF (2, 0);
 209
 210 extern void fprintf_filtered (struct ui_file *, const char *, ...)
 211   ATTRIBUTE_PRINTF (2, 3);
 212
 213 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...)
 214   ATTRIBUTE_PRINTF (3, 4);
 215
 216 extern void printf_filtered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 217
 218 extern void printfi_filtered (int, const char *, ...) ATTRIBUTE_PRINTF (2, 3);
 219
 220 extern void vprintf_unfiltered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
 221
 222 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list)
 223   ATTRIBUTE_PRINTF (2, 0);
 224
 225 extern void fprintf_unfiltered (struct ui_file *, const char *, ...)
 226   ATTRIBUTE_PRINTF (2, 3);
 227
 228 extern void printf_unfiltered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 229
 230 extern void print_spaces (int, struct ui_file *);
 231
 232 extern void print_spaces_filtered (int, struct ui_file *);
 233
 234 extern char *n_spaces (int);
 235
 236 extern void fputstr_filtered (const char *str, int quotr,
 237                               struct ui_file * stream);
 238
 239 extern void fputstr_unfiltered (const char *str, int quotr,
 240                                 struct ui_file * stream);
 241
 242 extern void fputstrn_filtered (const char *str, int n, int quotr,
 243                                struct ui_file * stream);
 244
 245 extern void fputstrn_unfiltered (const char *str, int n, int quotr,
 246                                  struct ui_file * stream);
 247
 248 /* Display the host ADDR on STREAM formatted as ``0x%x''.  */
 249 extern void gdb_print_host_address (const void *addr, struct ui_file *stream);
 250
 251 /* Convert CORE_ADDR to string in platform-specific manner.
 252    This is usually formatted similar to 0x%lx.  */
 253 extern const char *paddress (struct gdbarch *gdbarch, CORE_ADDR addr);
 254
 255 /* Return a string representation in hexadecimal notation of ADDRESS,
 256    which is suitable for printing.  */
 257
 258 extern const char *print_core_address (struct gdbarch *gdbarch,
 259                                        CORE_ADDR address);
 260
 261 /* Callback hash_f and eq_f for htab_create_alloc or htab_create_alloc_ex.  */
 262 extern hashval_t core_addr_hash (const void *ap);
 263 extern int core_addr_eq (const void *ap, const void *bp);
 264
 265 extern CORE_ADDR string_to_core_addr (const char *my_string);
 266
 267 extern void fprintf_symbol_filtered (struct ui_file *, const char *,
 268                                      enum language, int);
 269
 270 extern void throw_perror_with_name (enum errors errcode, const char *string)
 271   ATTRIBUTE_NORETURN;
 272
 273 extern void perror_warning_with_name (const char *string);
 274
 275 extern void print_sys_errmsg (const char *, int);
 276 \f
 277 /* Warnings and error messages.  */
 278
 279 extern void (*deprecated_error_begin_hook) (void);
 280
 281 /* Message to be printed before the warning message, when a warning occurs.  */
 282
 283 extern char *warning_pre_print;
 284
 285 extern void error_stream (struct ui_file *) ATTRIBUTE_NORETURN;
 286
 287 extern void internal_vwarning (const char *file, int line,
 288                                const char *, va_list ap)
 289      ATTRIBUTE_PRINTF (3, 0);
 290
 291 extern void internal_warning (const char *file, int line,
 292                               const char *, ...) ATTRIBUTE_PRINTF (3, 4);
 293
 294 extern void demangler_vwarning (const char *file, int line,
 295                                const char *, va_list ap)
 296      ATTRIBUTE_PRINTF (3, 0);
 297
 298 extern void demangler_warning (const char *file, int line,
 299                               const char *, ...) ATTRIBUTE_PRINTF (3, 4);
 300
 301 \f
 302 /* Misc. utilities.  */
 303
 304 /* Allocation and deallocation functions for the libiberty hash table
 305    which use obstacks.  */
 306 void *hashtab_obstack_allocate (void *data, size_t size, size_t count);
 307 void dummy_obstack_deallocate (void *object, void *data);
 308
 309 #ifdef HAVE_WAITPID
 310 extern pid_t wait_to_die_with_timeout (pid_t pid, int *status, int timeout);
 311 #endif
 312
 313 extern int producer_is_gcc_ge_4 (const char *producer);
 314
 315 extern int myread (int, char *, int);
 316
 317 /* Ensure that V is aligned to an N byte boundary (B's assumed to be a
 318    power of 2).  Round up/down when necessary.  Examples of correct
 319    use include:
 320
 321    addr = align_up (addr, 8); -- VALUE needs 8 byte alignment
 322    write_memory (addr, value, len);
 323    addr += len;
 324
 325    and:
 326
 327    sp = align_down (sp - len, 16); -- Keep SP 16 byte aligned
 328    write_memory (sp, value, len);
 329
 330    Note that uses such as:
 331
 332    write_memory (addr, value, len);
 333    addr += align_up (len, 8);
 334
 335    and:
 336
 337    sp -= align_up (len, 8);
 338    write_memory (sp, value, len);
 339
 340    are typically not correct as they don't ensure that the address (SP
 341    or ADDR) is correctly aligned (relying on previous alignment to
 342    keep things right).  This is also why the methods are called
 343    "align_..." instead of "round_..." as the latter reads better with
 344    this incorrect coding style.  */
 345
 346 extern ULONGEST align_up (ULONGEST v, int n);
 347 extern ULONGEST align_down (ULONGEST v, int n);
 348
 349 /* Sign extend VALUE.  BIT is the (1-based) index of the bit in VALUE
 350    to sign-extend.  */
 351
 352 extern LONGEST gdb_sign_extend (LONGEST value, int bit);
 353
 354 /* Resource limits used by getrlimit and setrlimit.  */
 355
 356 enum resource_limit_kind
 357   {
 358     LIMIT_CUR,
 359     LIMIT_MAX
 360   };
 361
 362 /* Check whether GDB will be able to dump core using the dump_core
 363    function.  Returns zero if GDB cannot or should not dump core.
 364    If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
 365    If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected.  */
 366
 367 extern int can_dump_core (enum resource_limit_kind limit_kind);
 368
 369 /* Print a warning that we cannot dump core.  */
 370
 371 extern void warn_cant_dump_core (const char *reason);
 372
 373 /* Dump core trying to increase the core soft limit to hard limit
 374    first.  */
 375
 376 extern void dump_core (void);
 377
 378 #endif /* UTILS_H */