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) 1986-2013 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
  26 extern void initialize_utils (void);
  27
  28 /* String utilities.  */
  29
  30 extern int sevenbit_strings;
  31
  32 extern char *savestring (const char *, size_t);
  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 \f
  57 /* Parsing utilites.  */
  58
  59 extern int parse_pid_to_attach (char *args);
  60
  61 extern int parse_escape (struct gdbarch *, char **);
  62
  63 char **gdb_buildargv (const char *);
  64 \f
  65 /* Cleanup utilities.  */
  66
  67 extern struct cleanup *make_cleanup_freeargv (char **);
  68
  69 struct dyn_string;
  70 extern struct cleanup *make_cleanup_dyn_string_delete (struct dyn_string *);
  71
  72 struct ui_file;
  73 extern struct cleanup *make_cleanup_ui_file_delete (struct ui_file *);
  74
  75 struct ui_out;
  76 extern struct cleanup *
  77   make_cleanup_ui_out_redirect_pop (struct ui_out *uiout);
  78
  79 struct section_addr_info;
  80 extern struct cleanup *(make_cleanup_free_section_addr_info
  81                         (struct section_addr_info *));
  82
  83 extern struct cleanup *make_cleanup_close (int fd);
  84
  85 extern struct cleanup *make_cleanup_fclose (FILE *file);
  86
  87 extern struct cleanup *make_cleanup_bfd_unref (bfd *abfd);
  88
  89 struct obstack;
  90 extern struct cleanup *make_cleanup_obstack_free (struct obstack *obstack);
  91
  92 extern struct cleanup *make_cleanup_restore_integer (int *variable);
  93 extern struct cleanup *make_cleanup_restore_uinteger (unsigned int *variable);
  94
  95 struct target_ops;
  96 extern struct cleanup *make_cleanup_unpush_target (struct target_ops *ops);
  97
  98 extern struct cleanup *
  99   make_cleanup_restore_ui_file (struct ui_file **variable);
 100
 101 extern struct cleanup *make_cleanup_value_free_to_mark (struct value *);
 102 extern struct cleanup *make_cleanup_value_free (struct value *);
 103
 104 struct so_list;
 105 extern struct cleanup *make_cleanup_free_so (struct so_list *so);
 106
 107 extern struct cleanup *make_cleanup_restore_current_language (void);
 108
 109 extern struct cleanup *make_cleanup_htab_delete (htab_t htab);
 110
 111 extern void free_current_contents (void *);
 112
 113 extern struct cleanup *make_command_stats_cleanup (int);
 114
 115 extern void init_page_info (void);
 116
 117 extern struct cleanup *make_cleanup_restore_page_info (void);
 118 extern struct cleanup *
 119   set_batch_flag_and_make_cleanup_restore_page_info (void);
 120
 121 extern struct cleanup *make_bpstat_clear_actions_cleanup (void);
 122 \f
 123 /* Path utilities.  */
 124
 125 extern char *gdb_realpath (const char *);
 126
 127 extern char *xfullpath (const char *);
 128
 129 extern int gdb_filename_fnmatch (const char *pattern, const char *string,
 130                                  int flags);
 131
 132 extern void substitute_path_component (char **stringp, const char *from,
 133                                        const char *to);
 134
 135 char *ldirname (const char *filename);
 136 \f
 137 /* GDB output, ui_file utilities.  */
 138
 139 struct ui_file;
 140
 141 extern void set_display_time (int);
 142
 143 extern void set_display_space (int);
 144
 145 extern int query (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 146 extern int nquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 147 extern int yquery (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 148
 149 extern void begin_line (void);
 150
 151 extern void wrap_here (char *);
 152
 153 extern void reinitialize_more_filter (void);
 154
 155 /* Global ui_file streams.  These are all defined in main.c.  */
 156 /* Normal results */
 157 extern struct ui_file *gdb_stdout;
 158 /* Input stream */
 159 extern struct ui_file *gdb_stdin;
 160 /* Serious error notifications */
 161 extern struct ui_file *gdb_stderr;
 162 /* Log/debug/trace messages that should bypass normal stdout/stderr
 163    filtering.  For moment, always call this stream using
 164    *_unfiltered.  In the very near future that restriction shall be
 165    removed - either call shall be unfiltered.  (cagney 1999-06-13).  */
 166 extern struct ui_file *gdb_stdlog;
 167 /* Target output that should bypass normal stdout/stderr filtering.
 168    For moment, always call this stream using *_unfiltered.  In the
 169    very near future that restriction shall be removed - either call
 170    shall be unfiltered.  (cagney 1999-07-02).  */
 171 extern struct ui_file *gdb_stdtarg;
 172 extern struct ui_file *gdb_stdtargerr;
 173 extern struct ui_file *gdb_stdtargin;
 174
 175 /* More generic printf like operations.  Filtered versions may return
 176    non-locally on error.  */
 177
 178 extern void fputs_filtered (const char *, struct ui_file *);
 179
 180 extern void fputs_unfiltered (const char *, struct ui_file *);
 181
 182 extern int fputc_filtered (int c, struct ui_file *);
 183
 184 extern int fputc_unfiltered (int c, struct ui_file *);
 185
 186 extern int putchar_filtered (int c);
 187
 188 extern int putchar_unfiltered (int c);
 189
 190 extern void puts_filtered (const char *);
 191
 192 extern void puts_unfiltered (const char *);
 193
 194 extern void puts_filtered_tabular (char *string, int width, int right);
 195
 196 extern void puts_debug (char *prefix, char *string, char *suffix);
 197
 198 extern void vprintf_filtered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
 199
 200 extern void vfprintf_filtered (struct ui_file *, const char *, va_list)
 201   ATTRIBUTE_PRINTF (2, 0);
 202
 203 extern void fprintf_filtered (struct ui_file *, const char *, ...)
 204   ATTRIBUTE_PRINTF (2, 3);
 205
 206 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...)
 207   ATTRIBUTE_PRINTF (3, 4);
 208
 209 extern void printf_filtered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 210
 211 extern void printfi_filtered (int, const char *, ...) ATTRIBUTE_PRINTF (2, 3);
 212
 213 extern void vprintf_unfiltered (const char *, va_list) ATTRIBUTE_PRINTF (1, 0);
 214
 215 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list)
 216   ATTRIBUTE_PRINTF (2, 0);
 217
 218 extern void fprintf_unfiltered (struct ui_file *, const char *, ...)
 219   ATTRIBUTE_PRINTF (2, 3);
 220
 221 extern void printf_unfiltered (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 222
 223 extern void print_spaces (int, struct ui_file *);
 224
 225 extern void print_spaces_filtered (int, struct ui_file *);
 226
 227 extern char *n_spaces (int);
 228
 229 extern void fputstr_filtered (const char *str, int quotr,
 230                               struct ui_file * stream);
 231
 232 extern void fputstr_unfiltered (const char *str, int quotr,
 233                                 struct ui_file * stream);
 234
 235 extern void fputstrn_filtered (const char *str, int n, int quotr,
 236                                struct ui_file * stream);
 237
 238 extern void fputstrn_unfiltered (const char *str, int n, int quotr,
 239                                  struct ui_file * stream);
 240
 241 /* Display the host ADDR on STREAM formatted as ``0x%x''.  */
 242 extern void gdb_print_host_address (const void *addr, struct ui_file *stream);
 243
 244 extern const char *host_address_to_string (const void *addr);
 245
 246 /* Convert CORE_ADDR to string in platform-specific manner.
 247    This is usually formatted similar to 0x%lx.  */
 248 extern const char *paddress (struct gdbarch *gdbarch, CORE_ADDR addr);
 249
 250 /* Return a string representation in hexadecimal notation of ADDRESS,
 251    which is suitable for printing.  */
 252
 253 extern const char *print_core_address (struct gdbarch *gdbarch,
 254                                        CORE_ADDR address);
 255
 256 /* Callback hash_f and eq_f for htab_create_alloc or htab_create_alloc_ex.  */
 257 extern hashval_t core_addr_hash (const void *ap);
 258 extern int core_addr_eq (const void *ap, const void *bp);
 259
 260 /* %d for LONGEST */
 261 extern char *plongest (LONGEST l);
 262 /* %u for ULONGEST */
 263 extern char *pulongest (ULONGEST l);
 264
 265 extern char *phex (ULONGEST l, int sizeof_l);
 266 extern char *phex_nz (ULONGEST l, int sizeof_l);
 267 extern char *int_string (LONGEST, int, int, int, int);
 268
 269 /* Convert a CORE_ADDR into a HEX string with leading zeros.
 270    The output from core_addr_to_string() can be passed direct to
 271    string_to_core_addr().  */
 272 extern const char *core_addr_to_string (const CORE_ADDR addr);
 273 extern const char *core_addr_to_string_nz (const CORE_ADDR addr);
 274 extern CORE_ADDR string_to_core_addr (const char *my_string);
 275
 276 /* Return a string that contains a number formatted as a hex
 277    string.  */
 278 extern char *hex_string (LONGEST);
 279 extern char *hex_string_custom (LONGEST, int);
 280
 281 extern void fprintf_symbol_filtered (struct ui_file *, const char *,
 282                                      enum language, int);
 283
 284 extern void perror_with_name (const char *) ATTRIBUTE_NORETURN;
 285
 286 extern void print_sys_errmsg (const char *, int);
 287 \f
 288 /* Warnings and error messages.  */
 289
 290 extern void (*deprecated_error_begin_hook) (void);
 291
 292 /* Message to be printed before the error message, when an error occurs.  */
 293
 294 extern char *error_pre_print;
 295
 296 /* Message to be printed before the error message, when an error occurs.  */
 297
 298 extern char *quit_pre_print;
 299
 300 /* Message to be printed before the warning message, when a warning occurs.  */
 301
 302 extern char *warning_pre_print;
 303
 304 extern void verror (const char *fmt, va_list ap)
 305      ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 0);
 306
 307 extern void error (const char *fmt, ...)
 308      ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 2);
 309
 310 extern void error_stream (struct ui_file *) ATTRIBUTE_NORETURN;
 311
 312 extern void vfatal (const char *fmt, va_list ap)
 313      ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 0);
 314
 315 extern void fatal (const char *fmt, ...)
 316      ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 2);
 317
 318 extern void internal_verror (const char *file, int line, const char *,
 319                              va_list ap)
 320      ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (3, 0);
 321
 322 extern void internal_vwarning (const char *file, int line,
 323                                const char *, va_list ap)
 324      ATTRIBUTE_PRINTF (3, 0);
 325
 326 extern void internal_warning (const char *file, int line,
 327                               const char *, ...) ATTRIBUTE_PRINTF (3, 4);
 328
 329 extern void warning (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
 330
 331 extern void vwarning (const char *, va_list args) ATTRIBUTE_PRINTF (1, 0);
 332 \f
 333 /* Misc. utilities.  */
 334
 335 /* Allocation and deallocation functions for the libiberty hash table
 336    which use obstacks.  */
 337 void *hashtab_obstack_allocate (void *data, size_t size, size_t count);
 338 void dummy_obstack_deallocate (void *object, void *data);
 339
 340 #ifdef HAVE_WAITPID
 341 extern pid_t wait_to_die_with_timeout (pid_t pid, int *status, int timeout);
 342 #endif
 343
 344 extern int producer_is_gcc_ge_4 (const char *producer);
 345
 346 extern unsigned long gnu_debuglink_crc32 (unsigned long crc,
 347                                           unsigned char *buf, size_t len);
 348
 349 extern int myread (int, char *, int);
 350
 351 /* Ensure that V is aligned to an N byte boundary (B's assumed to be a
 352    power of 2).  Round up/down when necessary.  Examples of correct
 353    use include:
 354
 355    addr = align_up (addr, 8); -- VALUE needs 8 byte alignment
 356    write_memory (addr, value, len);
 357    addr += len;
 358
 359    and:
 360
 361    sp = align_down (sp - len, 16); -- Keep SP 16 byte aligned
 362    write_memory (sp, value, len);
 363
 364    Note that uses such as:
 365
 366    write_memory (addr, value, len);
 367    addr += align_up (len, 8);
 368
 369    and:
 370
 371    sp -= align_up (len, 8);
 372    write_memory (sp, value, len);
 373
 374    are typically not correct as they don't ensure that the address (SP
 375    or ADDR) is correctly aligned (relying on previous alignment to
 376    keep things right).  This is also why the methods are called
 377    "align_..." instead of "round_..." as the latter reads better with
 378    this incorrect coding style.  */
 379
 380 extern ULONGEST align_up (ULONGEST v, int n);
 381 extern ULONGEST align_down (ULONGEST v, int n);
 382
 383 #endif /* UTILS_H */