1 /* Print values for GNU debugger GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
5 2008, 2009 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "gdb_string.h"
29 #include "expression.h"
33 #include "breakpoint.h"
37 #include "symfile.h" /* for overlay functions */
38 #include "objfiles.h" /* ditto */
39 #include "completer.h" /* for completion functions */
41 #include "gdb_assert.h"
46 #include "exceptions.h"
50 #include "parser-defs.h"
54 #include "tui/tui.h" /* For tui_active et.al. */
57 #if defined(__MINGW32__) && !defined(PRINTF_HAS_LONG_LONG)
58 # define USE_PRINTF_I64 1
59 # define PRINTF_HAS_LONG_LONG
61 # define USE_PRINTF_I64 0
64 extern int asm_demangle; /* Whether to demangle syms in asm printouts */
72 /* True if the value should be printed raw -- that is, bypassing
73 python-based formatters. */
77 /* Last specified output format. */
79 static char last_format = 0;
81 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
83 static char last_size = 'w';
85 /* Default address to examine next, and associated architecture. */
87 static struct gdbarch *next_gdbarch;
88 static CORE_ADDR next_address;
90 /* Number of delay instructions following current disassembled insn. */
92 static int branch_delay_insns;
94 /* Last address examined. */
96 static CORE_ADDR last_examine_address;
98 /* Contents of last address examined.
99 This is not valid past the end of the `x' command! */
101 static struct value *last_examine_value;
103 /* Largest offset between a symbolic value and an address, that will be
104 printed as `0x1234 <symbol+offset>'. */
106 static unsigned int max_symbolic_offset = UINT_MAX;
108 show_max_symbolic_offset (struct ui_file *file, int from_tty,
109 struct cmd_list_element *c, const char *value)
111 fprintf_filtered (file, _("\
112 The largest offset that will be printed in <symbol+1234> form is %s.\n"),
116 /* Append the source filename and linenumber of the symbol when
117 printing a symbolic value as `<symbol at filename:linenum>' if set. */
118 static int print_symbol_filename = 0;
120 show_print_symbol_filename (struct ui_file *file, int from_tty,
121 struct cmd_list_element *c, const char *value)
123 fprintf_filtered (file, _("\
124 Printing of source filename and line number with <symbol> is %s.\n"),
128 /* Number of auto-display expression currently being displayed.
129 So that we can disable it if we get an error or a signal within it.
130 -1 when not doing one. */
132 int current_display_number;
136 /* Chain link to next auto-display item. */
137 struct display *next;
138 /* The expression as the user typed it. */
140 /* Expression to be evaluated and displayed. */
141 struct expression *exp;
142 /* Item number of this auto-display item. */
144 /* Display format specified. */
145 struct format_data format;
146 /* Innermost block required by this expression when evaluated */
148 /* Status of this display (enabled or disabled) */
152 /* Chain of expressions whose values should be displayed
153 automatically each time the program stops. */
155 static struct display *display_chain;
157 static int display_number;
159 /* Prototypes for exported functions. */
161 void output_command (char *, int);
163 void _initialize_printcmd (void);
165 /* Prototypes for local functions. */
167 static void do_one_display (struct display *);
170 /* Decode a format specification. *STRING_PTR should point to it.
171 OFORMAT and OSIZE are used as defaults for the format and size
172 if none are given in the format specification.
173 If OSIZE is zero, then the size field of the returned value
174 should be set only if a size is explicitly specified by the
176 The structure returned describes all the data
177 found in the specification. In addition, *STRING_PTR is advanced
178 past the specification and past all whitespace following it. */
180 static struct format_data
181 decode_format (char **string_ptr, int oformat, int osize)
183 struct format_data val;
184 char *p = *string_ptr;
191 if (*p >= '0' && *p <= '9')
192 val.count = atoi (p);
193 while (*p >= '0' && *p <= '9')
196 /* Now process size or format letters that follow. */
200 if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g')
207 else if (*p >= 'a' && *p <= 'z')
213 while (*p == ' ' || *p == '\t')
217 /* Set defaults for format and size if not specified. */
218 if (val.format == '?')
222 /* Neither has been specified. */
223 val.format = oformat;
227 /* If a size is specified, any format makes a reasonable
228 default except 'i'. */
229 val.format = oformat == 'i' ? 'x' : oformat;
231 else if (val.size == '?')
235 /* Pick the appropriate size for an address. This is deferred
236 until do_examine when we know the actual architecture to use.
237 A special size value of 'a' is used to indicate this case. */
238 val.size = osize ? 'a' : osize;
241 /* Floating point has to be word or giantword. */
242 if (osize == 'w' || osize == 'g')
245 /* Default it to giantword if the last used size is not
247 val.size = osize ? 'g' : osize;
250 /* Characters default to one byte. */
251 val.size = osize ? 'b' : osize;
254 /* The default is the size most recently specified. */
261 /* Print value VAL on stream according to OPTIONS.
262 Do not end with a newline.
263 SIZE is the letter for the size of datum being printed.
264 This is used to pad hex numbers so they line up. SIZE is 0
265 for print / output and set for examine. */
268 print_formatted (struct value *val, int size,
269 const struct value_print_options *options,
270 struct ui_file *stream)
272 struct type *type = check_typedef (value_type (val));
273 int len = TYPE_LENGTH (type);
275 if (VALUE_LVAL (val) == lval_memory)
276 next_address = value_address (val) + len;
280 switch (options->format)
284 struct type *elttype = value_type (val);
285 next_address = (value_address (val)
286 + val_print_string (elttype,
287 value_address (val), -1,
293 /* We often wrap here if there are long symbolic names. */
295 next_address = (value_address (val)
296 + gdb_print_insn (value_address (val), stream,
297 &branch_delay_insns));
302 if (options->format == 0 || options->format == 's'
303 || TYPE_CODE (type) == TYPE_CODE_REF
304 || TYPE_CODE (type) == TYPE_CODE_ARRAY
305 || TYPE_CODE (type) == TYPE_CODE_STRING
306 || TYPE_CODE (type) == TYPE_CODE_STRUCT
307 || TYPE_CODE (type) == TYPE_CODE_UNION
308 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
309 value_print (val, stream, options);
311 /* User specified format, so don't look to the the type to
312 tell us what to do. */
313 print_scalar_formatted (value_contents (val), type,
314 options, size, stream);
317 /* Return builtin floating point type of same length as TYPE.
318 If no such type is found, return TYPE itself. */
320 float_type_from_length (struct gdbarch *gdbarch, struct type *type)
322 const struct builtin_type *builtin = builtin_type (gdbarch);
323 unsigned int len = TYPE_LENGTH (type);
325 if (len == TYPE_LENGTH (builtin->builtin_float))
326 type = builtin->builtin_float;
327 else if (len == TYPE_LENGTH (builtin->builtin_double))
328 type = builtin->builtin_double;
329 else if (len == TYPE_LENGTH (builtin->builtin_long_double))
330 type = builtin->builtin_long_double;
335 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
336 according to OPTIONS and SIZE on STREAM.
337 Formats s and i are not supported at this level.
339 This is how the elements of an array or structure are printed
343 print_scalar_formatted (const void *valaddr, struct type *type,
344 const struct value_print_options *options,
345 int size, struct ui_file *stream)
347 struct gdbarch *gdbarch = current_gdbarch;
348 LONGEST val_long = 0;
349 unsigned int len = TYPE_LENGTH (type);
350 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
352 /* If we get here with a string format, try again without it. Go
353 all the way back to the language printers, which may call us
355 if (options->format == 's')
357 struct value_print_options opts = *options;
360 val_print (type, valaddr, 0, 0, stream, 0, &opts,
365 if (len > sizeof(LONGEST) &&
366 (TYPE_CODE (type) == TYPE_CODE_INT
367 || TYPE_CODE (type) == TYPE_CODE_ENUM))
369 switch (options->format)
372 print_octal_chars (stream, valaddr, len, byte_order);
376 print_decimal_chars (stream, valaddr, len, byte_order);
379 print_binary_chars (stream, valaddr, len, byte_order);
382 print_hex_chars (stream, valaddr, len, byte_order);
385 print_char_chars (stream, type, valaddr, len, byte_order);
392 if (options->format != 'f')
393 val_long = unpack_long (type, valaddr);
395 /* If the value is a pointer, and pointers and addresses are not the
396 same, then at this point, the value's length (in target bytes) is
397 gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
398 if (TYPE_CODE (type) == TYPE_CODE_PTR)
399 len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT;
401 /* If we are printing it as unsigned, truncate it in case it is actually
402 a negative signed value (e.g. "print/u (short)-1" should print 65535
403 (if shorts are 16 bits) instead of 4294967295). */
404 if (options->format != 'd' || TYPE_UNSIGNED (type))
406 if (len < sizeof (LONGEST))
407 val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1;
410 switch (options->format)
415 /* No size specified, like in print. Print varying # of digits. */
416 print_longest (stream, 'x', 1, val_long);
425 print_longest (stream, size, 1, val_long);
428 error (_("Undefined output size \"%c\"."), size);
433 print_longest (stream, 'd', 1, val_long);
437 print_longest (stream, 'u', 0, val_long);
442 print_longest (stream, 'o', 1, val_long);
444 fprintf_filtered (stream, "0");
449 CORE_ADDR addr = unpack_pointer (type, valaddr);
450 print_address (addr, stream);
456 struct value_print_options opts = *options;
459 if (TYPE_UNSIGNED (type))
460 type = builtin_type (gdbarch)->builtin_true_unsigned_char;
462 type = builtin_type (gdbarch)->builtin_true_char;
464 value_print (value_from_longest (type, val_long), stream, &opts);
469 type = float_type_from_length (current_gdbarch, type);
470 print_floating (valaddr, type, stream);
474 internal_error (__FILE__, __LINE__,
475 _("failed internal consistency check"));
478 /* Binary; 't' stands for "two". */
480 char bits[8 * (sizeof val_long) + 1];
481 char buf[8 * (sizeof val_long) + 32];
486 width = 8 * (sizeof val_long);
503 error (_("Undefined output size \"%c\"."), size);
509 bits[width] = (val_long & 1) ? '1' : '0';
514 while (*cp && *cp == '0')
520 fputs_filtered (buf, stream);
525 error (_("Undefined output format \"%c\"."), options->format);
529 /* Specify default address for `x' command.
530 The `info lines' command uses this. */
533 set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr)
535 struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
537 next_gdbarch = gdbarch;
540 /* Make address available to the user as $_. */
541 set_internalvar (lookup_internalvar ("_"),
542 value_from_pointer (ptr_type, addr));
545 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
546 after LEADIN. Print nothing if no symbolic name is found nearby.
547 Optionally also print source file and line number, if available.
548 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
549 or to interpret it as a possible C++ name and convert it back to source
550 form. However note that DO_DEMANGLE can be overridden by the specific
551 settings of the demangle and asm_demangle variables. */
554 print_address_symbolic (CORE_ADDR addr, struct ui_file *stream,
555 int do_demangle, char *leadin)
558 char *filename = NULL;
563 /* Throw away both name and filename. */
564 struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name);
565 make_cleanup (free_current_contents, &filename);
567 if (build_address_symbolic (addr, do_demangle, &name, &offset,
568 &filename, &line, &unmapped))
570 do_cleanups (cleanup_chain);
574 fputs_filtered (leadin, stream);
576 fputs_filtered ("<*", stream);
578 fputs_filtered ("<", stream);
579 fputs_filtered (name, stream);
581 fprintf_filtered (stream, "+%u", (unsigned int) offset);
583 /* Append source filename and line number if desired. Give specific
584 line # of this addr, if we have it; else line # of the nearest symbol. */
585 if (print_symbol_filename && filename != NULL)
588 fprintf_filtered (stream, " at %s:%d", filename, line);
590 fprintf_filtered (stream, " in %s", filename);
593 fputs_filtered ("*>", stream);
595 fputs_filtered (">", stream);
597 do_cleanups (cleanup_chain);
600 /* Given an address ADDR return all the elements needed to print the
601 address in a symbolic form. NAME can be mangled or not depending
602 on DO_DEMANGLE (and also on the asm_demangle global variable,
603 manipulated via ''set print asm-demangle''). Return 0 in case of
604 success, when all the info in the OUT paramters is valid. Return 1
607 build_address_symbolic (CORE_ADDR addr, /* IN */
608 int do_demangle, /* IN */
609 char **name, /* OUT */
610 int *offset, /* OUT */
611 char **filename, /* OUT */
613 int *unmapped) /* OUT */
615 struct minimal_symbol *msymbol;
616 struct symbol *symbol;
617 CORE_ADDR name_location = 0;
618 struct obj_section *section = NULL;
619 char *name_temp = "";
621 /* Let's say it is mapped (not unmapped). */
624 /* Determine if the address is in an overlay, and whether it is
626 if (overlay_debugging)
628 section = find_pc_overlay (addr);
629 if (pc_in_unmapped_range (addr, section))
632 addr = overlay_mapped_address (addr, section);
636 /* First try to find the address in the symbol table, then
637 in the minsyms. Take the closest one. */
639 /* This is defective in the sense that it only finds text symbols. So
640 really this is kind of pointless--we should make sure that the
641 minimal symbols have everything we need (by changing that we could
642 save some memory, but for many debug format--ELF/DWARF or
643 anything/stabs--it would be inconvenient to eliminate those minimal
645 msymbol = lookup_minimal_symbol_by_pc_section (addr, section);
646 symbol = find_pc_sect_function (addr, section);
650 name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol));
651 if (do_demangle || asm_demangle)
652 name_temp = SYMBOL_PRINT_NAME (symbol);
654 name_temp = SYMBOL_LINKAGE_NAME (symbol);
659 if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL)
661 /* The msymbol is closer to the address than the symbol;
662 use the msymbol instead. */
664 name_location = SYMBOL_VALUE_ADDRESS (msymbol);
665 if (do_demangle || asm_demangle)
666 name_temp = SYMBOL_PRINT_NAME (msymbol);
668 name_temp = SYMBOL_LINKAGE_NAME (msymbol);
671 if (symbol == NULL && msymbol == NULL)
674 /* If the nearest symbol is too far away, don't print anything symbolic. */
676 /* For when CORE_ADDR is larger than unsigned int, we do math in
677 CORE_ADDR. But when we detect unsigned wraparound in the
678 CORE_ADDR math, we ignore this test and print the offset,
679 because addr+max_symbolic_offset has wrapped through the end
680 of the address space back to the beginning, giving bogus comparison. */
681 if (addr > name_location + max_symbolic_offset
682 && name_location + max_symbolic_offset > name_location)
685 *offset = addr - name_location;
687 *name = xstrdup (name_temp);
689 if (print_symbol_filename)
691 struct symtab_and_line sal;
693 sal = find_pc_sect_line (addr, section, 0);
697 *filename = xstrdup (sal.symtab->filename);
705 /* Print address ADDR symbolically on STREAM.
706 First print it as a number. Then perhaps print
707 <SYMBOL + OFFSET> after the number. */
710 print_address (CORE_ADDR addr, struct ui_file *stream)
712 fputs_filtered (paddress (addr), stream);
713 print_address_symbolic (addr, stream, asm_demangle, " ");
716 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
717 controls whether to print the symbolic name "raw" or demangled.
718 Global setting "addressprint" controls whether to print hex address
722 print_address_demangle (CORE_ADDR addr, struct ui_file *stream,
725 struct value_print_options opts;
726 get_user_print_options (&opts);
729 fprintf_filtered (stream, "0");
731 else if (opts.addressprint)
733 fputs_filtered (paddress (addr), stream);
734 print_address_symbolic (addr, stream, do_demangle, " ");
738 print_address_symbolic (addr, stream, do_demangle, "");
743 /* Examine data at address ADDR in format FMT.
744 Fetch it from memory and print on gdb_stdout. */
747 do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr)
752 struct type *val_type = NULL;
755 struct value_print_options opts;
760 next_gdbarch = gdbarch;
763 /* String or instruction format implies fetch single bytes
764 regardless of the specified size. */
765 if (format == 's' || format == 'i')
770 /* Pick the appropriate size for an address. */
771 if (gdbarch_ptr_bit (next_gdbarch) == 64)
773 else if (gdbarch_ptr_bit (next_gdbarch) == 32)
775 else if (gdbarch_ptr_bit (next_gdbarch) == 16)
778 /* Bad value for gdbarch_ptr_bit. */
779 internal_error (__FILE__, __LINE__,
780 _("failed internal consistency check"));
784 val_type = builtin_type_int8;
785 else if (size == 'h')
786 val_type = builtin_type_int16;
787 else if (size == 'w')
788 val_type = builtin_type_int32;
789 else if (size == 'g')
790 val_type = builtin_type_int64;
797 if (format == 's' || format == 'i')
800 get_formatted_print_options (&opts, format);
802 /* Print as many objects as specified in COUNT, at most maxelts per line,
803 with the address of the next one at the start of each line. */
808 print_address (next_address, gdb_stdout);
809 printf_filtered (":");
814 printf_filtered ("\t");
815 /* Note that print_formatted sets next_address for the next
817 last_examine_address = next_address;
819 if (last_examine_value)
820 value_free (last_examine_value);
822 /* The value to be displayed is not fetched greedily.
823 Instead, to avoid the possibility of a fetched value not
824 being used, its retrieval is delayed until the print code
825 uses it. When examining an instruction stream, the
826 disassembler will perform its own memory fetch using just
827 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
828 the disassembler be modified so that LAST_EXAMINE_VALUE
829 is left with the byte sequence from the last complete
830 instruction fetched from memory? */
831 last_examine_value = value_at_lazy (val_type, next_address);
833 if (last_examine_value)
834 release_value (last_examine_value);
836 print_formatted (last_examine_value, size, &opts, gdb_stdout);
838 /* Display any branch delay slots following the final insn. */
839 if (format == 'i' && count == 1)
840 count += branch_delay_insns;
842 printf_filtered ("\n");
843 gdb_flush (gdb_stdout);
848 validate_format (struct format_data fmt, char *cmdname)
851 error (_("Size letters are meaningless in \"%s\" command."), cmdname);
853 error (_("Item count other than 1 is meaningless in \"%s\" command."),
855 if (fmt.format == 'i')
856 error (_("Format letter \"%c\" is meaningless in \"%s\" command."),
857 fmt.format, cmdname);
860 /* Evaluate string EXP as an expression in the current language and
861 print the resulting value. EXP may contain a format specifier as the
862 first argument ("/x myvar" for example, to print myvar in hex). */
865 print_command_1 (char *exp, int inspect, int voidprint)
867 struct expression *expr;
868 struct cleanup *old_chain = 0;
871 struct format_data fmt;
874 if (exp && *exp == '/')
877 fmt = decode_format (&exp, last_format, 0);
878 validate_format (fmt, "print");
879 last_format = format = fmt.format;
892 expr = parse_expression (exp);
893 old_chain = make_cleanup (free_current_contents, &expr);
895 val = evaluate_expression (expr);
898 val = access_value_history (0);
900 if (voidprint || (val && value_type (val) &&
901 TYPE_CODE (value_type (val)) != TYPE_CODE_VOID))
903 struct value_print_options opts;
904 int histindex = record_latest_value (val);
907 annotate_value_history_begin (histindex, value_type (val));
909 annotate_value_begin (value_type (val));
912 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"",
914 else if (histindex >= 0)
915 printf_filtered ("$%d = ", histindex);
918 annotate_value_history_value ();
920 get_formatted_print_options (&opts, format);
921 opts.inspect_it = inspect;
924 print_formatted (val, fmt.size, &opts, gdb_stdout);
925 printf_filtered ("\n");
928 annotate_value_history_end ();
930 annotate_value_end ();
933 printf_unfiltered ("\") )\030");
937 do_cleanups (old_chain);
941 print_command (char *exp, int from_tty)
943 print_command_1 (exp, 0, 1);
946 /* Same as print, except in epoch, it gets its own window. */
948 inspect_command (char *exp, int from_tty)
950 extern int epoch_interface;
952 print_command_1 (exp, epoch_interface, 1);
955 /* Same as print, except it doesn't print void results. */
957 call_command (char *exp, int from_tty)
959 print_command_1 (exp, 0, 0);
963 output_command (char *exp, int from_tty)
965 struct expression *expr;
966 struct cleanup *old_chain;
969 struct format_data fmt;
970 struct value_print_options opts;
975 if (exp && *exp == '/')
978 fmt = decode_format (&exp, 0, 0);
979 validate_format (fmt, "output");
983 expr = parse_expression (exp);
984 old_chain = make_cleanup (free_current_contents, &expr);
986 val = evaluate_expression (expr);
988 annotate_value_begin (value_type (val));
990 get_formatted_print_options (&opts, format);
992 print_formatted (val, fmt.size, &opts, gdb_stdout);
994 annotate_value_end ();
997 gdb_flush (gdb_stdout);
999 do_cleanups (old_chain);
1003 set_command (char *exp, int from_tty)
1005 struct expression *expr = parse_expression (exp);
1006 struct cleanup *old_chain =
1007 make_cleanup (free_current_contents, &expr);
1008 evaluate_expression (expr);
1009 do_cleanups (old_chain);
1013 sym_info (char *arg, int from_tty)
1015 struct minimal_symbol *msymbol;
1016 struct objfile *objfile;
1017 struct obj_section *osect;
1018 CORE_ADDR addr, sect_addr;
1020 unsigned int offset;
1023 error_no_arg (_("address"));
1025 addr = parse_and_eval_address (arg);
1026 ALL_OBJSECTIONS (objfile, osect)
1028 /* Only process each object file once, even if there's a separate
1030 if (objfile->separate_debug_objfile_backlink)
1033 sect_addr = overlay_mapped_address (addr, osect);
1035 if (obj_section_addr (osect) <= sect_addr
1036 && sect_addr < obj_section_endaddr (osect)
1037 && (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, osect)))
1039 const char *obj_name, *mapped, *sec_name, *msym_name;
1041 struct cleanup *old_chain;
1044 offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol);
1045 mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped");
1046 sec_name = osect->the_bfd_section->name;
1047 msym_name = SYMBOL_PRINT_NAME (msymbol);
1049 /* Don't print the offset if it is zero.
1050 We assume there's no need to handle i18n of "sym + offset". */
1052 loc_string = xstrprintf ("%s + %u", msym_name, offset);
1054 loc_string = xstrprintf ("%s", msym_name);
1056 /* Use a cleanup to free loc_string in case the user quits
1057 a pagination request inside printf_filtered. */
1058 old_chain = make_cleanup (xfree, loc_string);
1060 gdb_assert (osect->objfile && osect->objfile->name);
1061 obj_name = osect->objfile->name;
1063 if (MULTI_OBJFILE_P ())
1064 if (pc_in_unmapped_range (addr, osect))
1065 if (section_is_overlay (osect))
1066 printf_filtered (_("%s in load address range of "
1067 "%s overlay section %s of %s\n"),
1068 loc_string, mapped, sec_name, obj_name);
1070 printf_filtered (_("%s in load address range of "
1071 "section %s of %s\n"),
1072 loc_string, sec_name, obj_name);
1074 if (section_is_overlay (osect))
1075 printf_filtered (_("%s in %s overlay section %s of %s\n"),
1076 loc_string, mapped, sec_name, obj_name);
1078 printf_filtered (_("%s in section %s of %s\n"),
1079 loc_string, sec_name, obj_name);
1081 if (pc_in_unmapped_range (addr, osect))
1082 if (section_is_overlay (osect))
1083 printf_filtered (_("%s in load address range of %s overlay "
1085 loc_string, mapped, sec_name);
1087 printf_filtered (_("%s in load address range of section %s\n"),
1088 loc_string, sec_name);
1090 if (section_is_overlay (osect))
1091 printf_filtered (_("%s in %s overlay section %s\n"),
1092 loc_string, mapped, sec_name);
1094 printf_filtered (_("%s in section %s\n"),
1095 loc_string, sec_name);
1097 do_cleanups (old_chain);
1101 printf_filtered (_("No symbol matches %s.\n"), arg);
1105 address_info (char *exp, int from_tty)
1107 struct gdbarch *gdbarch;
1110 struct minimal_symbol *msymbol;
1112 struct obj_section *section;
1113 CORE_ADDR load_addr;
1114 int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero
1115 if exp is a field of `this'. */
1118 error (_("Argument required."));
1120 sym = lookup_symbol (exp, get_selected_block (0), VAR_DOMAIN,
1121 &is_a_field_of_this);
1124 if (is_a_field_of_this)
1126 printf_filtered ("Symbol \"");
1127 fprintf_symbol_filtered (gdb_stdout, exp,
1128 current_language->la_language, DMGL_ANSI);
1129 printf_filtered ("\" is a field of the local class variable ");
1130 if (current_language->la_language == language_objc)
1131 printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
1133 printf_filtered ("`this'\n");
1137 msymbol = lookup_minimal_symbol (exp, NULL, NULL);
1139 if (msymbol != NULL)
1141 load_addr = SYMBOL_VALUE_ADDRESS (msymbol);
1143 printf_filtered ("Symbol \"");
1144 fprintf_symbol_filtered (gdb_stdout, exp,
1145 current_language->la_language, DMGL_ANSI);
1146 printf_filtered ("\" is at ");
1147 fputs_filtered (paddress (load_addr), gdb_stdout);
1148 printf_filtered (" in a file compiled without debugging");
1149 section = SYMBOL_OBJ_SECTION (msymbol);
1150 if (section_is_overlay (section))
1152 load_addr = overlay_unmapped_address (load_addr, section);
1153 printf_filtered (",\n -- loaded at ");
1154 fputs_filtered (paddress (load_addr), gdb_stdout);
1155 printf_filtered (" in overlay section %s",
1156 section->the_bfd_section->name);
1158 printf_filtered (".\n");
1161 error (_("No symbol \"%s\" in current context."), exp);
1165 printf_filtered ("Symbol \"");
1166 fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym),
1167 current_language->la_language, DMGL_ANSI);
1168 printf_filtered ("\" is ");
1169 val = SYMBOL_VALUE (sym);
1170 section = SYMBOL_OBJ_SECTION (sym);
1171 gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile);
1173 switch (SYMBOL_CLASS (sym))
1176 case LOC_CONST_BYTES:
1177 printf_filtered ("constant");
1181 printf_filtered ("a label at address ");
1182 fputs_filtered (paddress (load_addr = SYMBOL_VALUE_ADDRESS (sym)),
1184 if (section_is_overlay (section))
1186 load_addr = overlay_unmapped_address (load_addr, section);
1187 printf_filtered (",\n -- loaded at ");
1188 fputs_filtered (paddress (load_addr), gdb_stdout);
1189 printf_filtered (" in overlay section %s",
1190 section->the_bfd_section->name);
1195 /* FIXME: cagney/2004-01-26: It should be possible to
1196 unconditionally call the SYMBOL_COMPUTED_OPS method when available.
1197 Unfortunately DWARF 2 stores the frame-base (instead of the
1198 function) location in a function's symbol. Oops! For the
1199 moment enable this when/where applicable. */
1200 SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, gdb_stdout);
1204 /* GDBARCH is the architecture associated with the objfile the symbol
1205 is defined in; the target architecture may be different, and may
1206 provide additional registers. However, we do not know the target
1207 architecture at this point. We assume the objfile architecture
1208 will contain all the standard registers that occur in debug info
1210 regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
1212 if (SYMBOL_IS_ARGUMENT (sym))
1213 printf_filtered (_("an argument in register %s"),
1214 gdbarch_register_name (gdbarch, regno));
1216 printf_filtered (_("a variable in register %s"),
1217 gdbarch_register_name (gdbarch, regno));
1221 printf_filtered (_("static storage at address "));
1222 fputs_filtered (paddress (load_addr = SYMBOL_VALUE_ADDRESS (sym)),
1224 if (section_is_overlay (section))
1226 load_addr = overlay_unmapped_address (load_addr, section);
1227 printf_filtered (_(",\n -- loaded at "));
1228 fputs_filtered (paddress (load_addr), gdb_stdout);
1229 printf_filtered (_(" in overlay section %s"),
1230 section->the_bfd_section->name);
1234 case LOC_REGPARM_ADDR:
1235 /* Note comment at LOC_REGISTER. */
1236 regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
1237 printf_filtered (_("address of an argument in register %s"),
1238 gdbarch_register_name (gdbarch, regno));
1242 printf_filtered (_("an argument at offset %ld"), val);
1246 printf_filtered (_("a local variable at frame offset %ld"), val);
1250 printf_filtered (_("a reference argument at offset %ld"), val);
1254 printf_filtered (_("a typedef"));
1258 printf_filtered (_("a function at address "));
1259 load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
1260 fputs_filtered (paddress (load_addr), gdb_stdout);
1261 if (section_is_overlay (section))
1263 load_addr = overlay_unmapped_address (load_addr, section);
1264 printf_filtered (_(",\n -- loaded at "));
1265 fputs_filtered (paddress (load_addr), gdb_stdout);
1266 printf_filtered (_(" in overlay section %s"),
1267 section->the_bfd_section->name);
1271 case LOC_UNRESOLVED:
1273 struct minimal_symbol *msym;
1275 msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), NULL, NULL);
1277 printf_filtered ("unresolved");
1280 section = SYMBOL_OBJ_SECTION (msym);
1281 load_addr = SYMBOL_VALUE_ADDRESS (msym);
1284 && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0)
1285 printf_filtered (_("a thread-local variable at offset %s "
1286 "in the thread-local storage for `%s'"),
1287 paddr_nz (load_addr), section->objfile->name);
1290 printf_filtered (_("static storage at address "));
1291 fputs_filtered (paddress (load_addr), gdb_stdout);
1292 if (section_is_overlay (section))
1294 load_addr = overlay_unmapped_address (load_addr, section);
1295 printf_filtered (_(",\n -- loaded at "));
1296 fputs_filtered (paddress (load_addr), gdb_stdout);
1297 printf_filtered (_(" in overlay section %s"),
1298 section->the_bfd_section->name);
1305 case LOC_OPTIMIZED_OUT:
1306 printf_filtered (_("optimized out"));
1310 printf_filtered (_("of unknown (botched) type"));
1313 printf_filtered (".\n");
1318 x_command (char *exp, int from_tty)
1320 struct expression *expr;
1321 struct format_data fmt;
1322 struct cleanup *old_chain;
1325 fmt.format = last_format ? last_format : 'x';
1326 fmt.size = last_size;
1330 if (exp && *exp == '/')
1333 fmt = decode_format (&exp, last_format, last_size);
1336 /* If we have an expression, evaluate it and use it as the address. */
1338 if (exp != 0 && *exp != 0)
1340 expr = parse_expression (exp);
1341 /* Cause expression not to be there any more if this command is
1342 repeated with Newline. But don't clobber a user-defined
1343 command's definition. */
1346 old_chain = make_cleanup (free_current_contents, &expr);
1347 val = evaluate_expression (expr);
1348 if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF)
1349 val = value_ind (val);
1350 /* In rvalue contexts, such as this, functions are coerced into
1351 pointers to functions. This makes "x/i main" work. */
1352 if (/* last_format == 'i' && */
1353 TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC
1354 && VALUE_LVAL (val) == lval_memory)
1355 next_address = value_address (val);
1357 next_address = value_as_address (val);
1359 next_gdbarch = expr->gdbarch;
1360 do_cleanups (old_chain);
1364 error_no_arg (_("starting display address"));
1366 do_examine (fmt, next_gdbarch, next_address);
1368 /* If the examine succeeds, we remember its size and format for next
1370 last_size = fmt.size;
1371 last_format = fmt.format;
1373 /* Set a couple of internal variables if appropriate. */
1374 if (last_examine_value)
1376 /* Make last address examined available to the user as $_. Use
1377 the correct pointer type. */
1378 struct type *pointer_type
1379 = lookup_pointer_type (value_type (last_examine_value));
1380 set_internalvar (lookup_internalvar ("_"),
1381 value_from_pointer (pointer_type,
1382 last_examine_address));
1384 /* Make contents of last address examined available to the user
1385 as $__. If the last value has not been fetched from memory
1386 then don't fetch it now; instead mark it by voiding the $__
1388 if (value_lazy (last_examine_value))
1389 clear_internalvar (lookup_internalvar ("__"));
1391 set_internalvar (lookup_internalvar ("__"), last_examine_value);
1396 /* Add an expression to the auto-display chain.
1397 Specify the expression. */
1400 display_command (char *exp, int from_tty)
1402 struct format_data fmt;
1403 struct expression *expr;
1404 struct display *new;
1408 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1410 if (tui_active && exp != NULL && *exp == '$')
1411 display_it = (tui_set_layout_for_display_command (exp) == TUI_FAILURE);
1425 fmt = decode_format (&exp, 0, 0);
1426 if (fmt.size && fmt.format == 0)
1428 if (fmt.format == 'i' || fmt.format == 's')
1439 innermost_block = NULL;
1440 expr = parse_expression (exp);
1442 new = (struct display *) xmalloc (sizeof (struct display));
1444 new->exp_string = xstrdup (exp);
1446 new->block = innermost_block;
1447 new->next = display_chain;
1448 new->number = ++display_number;
1451 display_chain = new;
1453 if (from_tty && target_has_execution)
1454 do_one_display (new);
1461 free_display (struct display *d)
1463 xfree (d->exp_string);
1468 /* Clear out the display_chain. Done when new symtabs are loaded,
1469 since this invalidates the types stored in many expressions. */
1472 clear_displays (void)
1476 while ((d = display_chain) != NULL)
1478 display_chain = d->next;
1483 /* Delete the auto-display number NUM. */
1486 delete_display (int num)
1488 struct display *d1, *d;
1491 error (_("No display number %d."), num);
1493 if (display_chain->number == num)
1496 display_chain = d1->next;
1500 for (d = display_chain;; d = d->next)
1503 error (_("No display number %d."), num);
1504 if (d->next->number == num)
1514 /* Delete some values from the auto-display chain.
1515 Specify the element numbers. */
1518 undisplay_command (char *args, int from_tty)
1526 if (query (_("Delete all auto-display expressions? ")))
1535 while (*p1 >= '0' && *p1 <= '9')
1537 if (*p1 && *p1 != ' ' && *p1 != '\t')
1538 error (_("Arguments must be display numbers."));
1542 delete_display (num);
1545 while (*p == ' ' || *p == '\t')
1551 /* Display a single auto-display.
1552 Do nothing if the display cannot be printed in the current context,
1553 or if the display is disabled. */
1556 do_one_display (struct display *d)
1558 int within_current_scope;
1560 if (d->enabled_p == 0)
1565 volatile struct gdb_exception ex;
1566 TRY_CATCH (ex, RETURN_MASK_ALL)
1568 innermost_block = NULL;
1569 d->exp = parse_expression (d->exp_string);
1570 d->block = innermost_block;
1574 /* Can't re-parse the expression. Disable this display item. */
1576 warning (_("Unable to display \"%s\": %s"),
1577 d->exp_string, ex.message);
1583 within_current_scope = contained_in (get_selected_block (0), d->block);
1585 within_current_scope = 1;
1586 if (!within_current_scope)
1589 current_display_number = d->number;
1591 annotate_display_begin ();
1592 printf_filtered ("%d", d->number);
1593 annotate_display_number_end ();
1594 printf_filtered (": ");
1600 annotate_display_format ();
1602 printf_filtered ("x/");
1603 if (d->format.count != 1)
1604 printf_filtered ("%d", d->format.count);
1605 printf_filtered ("%c", d->format.format);
1606 if (d->format.format != 'i' && d->format.format != 's')
1607 printf_filtered ("%c", d->format.size);
1608 printf_filtered (" ");
1610 annotate_display_expression ();
1612 puts_filtered (d->exp_string);
1613 annotate_display_expression_end ();
1615 if (d->format.count != 1 || d->format.format == 'i')
1616 printf_filtered ("\n");
1618 printf_filtered (" ");
1620 val = evaluate_expression (d->exp);
1621 addr = value_as_address (val);
1622 if (d->format.format == 'i')
1623 addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr);
1625 annotate_display_value ();
1627 do_examine (d->format, d->exp->gdbarch, addr);
1631 struct value_print_options opts;
1633 annotate_display_format ();
1635 if (d->format.format)
1636 printf_filtered ("/%c ", d->format.format);
1638 annotate_display_expression ();
1640 puts_filtered (d->exp_string);
1641 annotate_display_expression_end ();
1643 printf_filtered (" = ");
1645 annotate_display_expression ();
1647 get_formatted_print_options (&opts, d->format.format);
1648 opts.raw = d->format.raw;
1649 print_formatted (evaluate_expression (d->exp),
1650 d->format.size, &opts, gdb_stdout);
1651 printf_filtered ("\n");
1654 annotate_display_end ();
1656 gdb_flush (gdb_stdout);
1657 current_display_number = -1;
1660 /* Display all of the values on the auto-display chain which can be
1661 evaluated in the current scope. */
1668 for (d = display_chain; d; d = d->next)
1672 /* Delete the auto-display which we were in the process of displaying.
1673 This is done when there is an error or a signal. */
1676 disable_display (int num)
1680 for (d = display_chain; d; d = d->next)
1681 if (d->number == num)
1686 printf_unfiltered (_("No display number %d.\n"), num);
1690 disable_current_display (void)
1692 if (current_display_number >= 0)
1694 disable_display (current_display_number);
1695 fprintf_unfiltered (gdb_stderr, _("\
1696 Disabling display %d to avoid infinite recursion.\n"),
1697 current_display_number);
1699 current_display_number = -1;
1703 display_info (char *ignore, int from_tty)
1708 printf_unfiltered (_("There are no auto-display expressions now.\n"));
1710 printf_filtered (_("Auto-display expressions now in effect:\n\
1711 Num Enb Expression\n"));
1713 for (d = display_chain; d; d = d->next)
1715 printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]);
1717 printf_filtered ("/%d%c%c ", d->format.count, d->format.size,
1719 else if (d->format.format)
1720 printf_filtered ("/%c ", d->format.format);
1721 puts_filtered (d->exp_string);
1722 if (d->block && !contained_in (get_selected_block (0), d->block))
1723 printf_filtered (_(" (cannot be evaluated in the current context)"));
1724 printf_filtered ("\n");
1725 gdb_flush (gdb_stdout);
1730 enable_display (char *args, int from_tty)
1739 for (d = display_chain; d; d = d->next)
1746 while (*p1 >= '0' && *p1 <= '9')
1748 if (*p1 && *p1 != ' ' && *p1 != '\t')
1749 error (_("Arguments must be display numbers."));
1753 for (d = display_chain; d; d = d->next)
1754 if (d->number == num)
1759 printf_unfiltered (_("No display number %d.\n"), num);
1762 while (*p == ' ' || *p == '\t')
1768 disable_display_command (char *args, int from_tty)
1776 for (d = display_chain; d; d = d->next)
1783 while (*p1 >= '0' && *p1 <= '9')
1785 if (*p1 && *p1 != ' ' && *p1 != '\t')
1786 error (_("Arguments must be display numbers."));
1788 disable_display (atoi (p));
1791 while (*p == ' ' || *p == '\t')
1796 /* Return 1 if D uses SOLIB (and will become dangling when SOLIB
1797 is unloaded), otherwise return 0. */
1800 display_uses_solib_p (const struct display *d,
1801 const struct so_list *solib)
1804 struct expression *const exp = d->exp;
1805 const union exp_element *const elts = exp->elts;
1807 if (d->block != NULL
1808 && solib_contains_address_p (solib, d->block->startaddr))
1811 for (endpos = exp->nelts; endpos > 0; )
1813 int i, args, oplen = 0;
1815 exp->language_defn->la_exp_desc->operator_length (exp, endpos,
1817 gdb_assert (oplen > 0);
1820 if (elts[i].opcode == OP_VAR_VALUE)
1822 const struct block *const block = elts[i + 1].block;
1823 const struct symbol *const symbol = elts[i + 2].symbol;
1824 const struct obj_section *const section =
1825 SYMBOL_OBJ_SECTION (symbol);
1828 && solib_contains_address_p (solib, block->startaddr))
1831 if (section && section->objfile == solib->objfile)
1840 /* display_chain items point to blocks and expressions. Some expressions in
1841 turn may point to symbols.
1842 Both symbols and blocks are obstack_alloc'd on objfile_stack, and are
1843 obstack_free'd when a shared library is unloaded.
1844 Clear pointers that are about to become dangling.
1845 Both .exp and .block fields will be restored next time we need to display
1846 an item by re-parsing .exp_string field in the new execution context. */
1849 clear_dangling_display_expressions (struct so_list *solib)
1852 struct objfile *objfile = NULL;
1854 for (d = display_chain; d; d = d->next)
1856 if (d->exp && display_uses_solib_p (d, solib))
1866 /* Print the value in stack frame FRAME of a variable specified by a
1867 struct symbol. NAME is the name to print; if NULL then VAR's print
1868 name will be used. STREAM is the ui_file on which to print the
1869 value. INDENT specifies the number of indent levels to print
1870 before printing the variable name. */
1873 print_variable_and_value (const char *name, struct symbol *var,
1874 struct frame_info *frame,
1875 struct ui_file *stream, int indent)
1878 struct value_print_options opts;
1881 name = SYMBOL_PRINT_NAME (var);
1883 fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name);
1885 val = read_var_value (var, frame);
1886 get_user_print_options (&opts);
1887 common_val_print (val, stream, indent, &opts, current_language);
1888 fprintf_filtered (stream, "\n");
1892 printf_command (char *arg, int from_tty)
1896 char *string = NULL;
1897 struct value **val_args;
1899 char *current_substring;
1901 int allocated_args = 20;
1902 struct cleanup *old_cleanups;
1904 val_args = xmalloc (allocated_args * sizeof (struct value *));
1905 old_cleanups = make_cleanup (free_current_contents, &val_args);
1908 error_no_arg (_("format-control string and values to print"));
1910 /* Skip white space before format string */
1911 while (*s == ' ' || *s == '\t')
1914 /* A format string should follow, enveloped in double quotes. */
1916 error (_("Bad format string, missing '\"'."));
1918 /* Parse the format-control string and copy it into the string STRING,
1919 processing some kinds of escape sequence. */
1921 f = string = (char *) alloca (strlen (s) + 1);
1929 error (_("Bad format string, non-terminated '\"'."));
1962 /* ??? TODO: handle other escape sequences */
1963 error (_("Unrecognized escape character \\%c in format string."),
1973 /* Skip over " and following space and comma. */
1976 while (*s == ' ' || *s == '\t')
1979 if (*s != ',' && *s != 0)
1980 error (_("Invalid argument syntax"));
1984 while (*s == ' ' || *s == '\t')
1987 /* Need extra space for the '\0's. Doubling the size is sufficient. */
1988 substrings = alloca (strlen (string) * 2);
1989 current_substring = substrings;
1992 /* Now scan the string for %-specs and see what kinds of args they want.
1993 argclass[I] classifies the %-specs so we can give printf_filtered
1994 something of the right size. */
1998 int_arg, long_arg, long_long_arg, ptr_arg,
1999 string_arg, wide_string_arg, wide_char_arg,
2000 double_arg, long_double_arg, decfloat_arg
2002 enum argclass *argclass;
2003 enum argclass this_argclass;
2008 argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass);
2015 int seen_hash = 0, seen_zero = 0, lcount = 0, seen_prec = 0;
2016 int seen_space = 0, seen_plus = 0;
2017 int seen_big_l = 0, seen_h = 0, seen_big_h = 0;
2018 int seen_big_d = 0, seen_double_big_d = 0;
2021 /* Check the validity of the format specifier, and work
2022 out what argument it expects. We only accept C89
2023 format strings, with the exception of long long (which
2024 we autoconf for). */
2026 /* Skip over "%%". */
2033 /* The first part of a format specifier is a set of flag
2035 while (strchr ("0-+ #", *f))
2048 /* The next part of a format specifier is a width. */
2049 while (strchr ("0123456789", *f))
2052 /* The next part of a format specifier is a precision. */
2057 while (strchr ("0123456789", *f))
2061 /* The next part of a format specifier is a length modifier. */
2082 /* Decimal32 modifier. */
2088 /* Decimal64 and Decimal128 modifiers. */
2093 /* Check for a Decimal128. */
2097 seen_double_big_d = 1;
2113 if (seen_space || seen_plus)
2120 this_argclass = int_arg;
2121 else if (lcount == 1)
2122 this_argclass = long_arg;
2124 this_argclass = long_long_arg;
2131 this_argclass = lcount == 0 ? int_arg : wide_char_arg;
2132 if (lcount > 1 || seen_h || seen_big_l)
2134 if (seen_prec || seen_zero || seen_space || seen_plus)
2139 this_argclass = ptr_arg;
2140 if (lcount || seen_h || seen_big_l)
2142 if (seen_prec || seen_zero || seen_space || seen_plus)
2147 this_argclass = lcount == 0 ? string_arg : wide_string_arg;
2148 if (lcount > 1 || seen_h || seen_big_l)
2150 if (seen_zero || seen_space || seen_plus)
2159 if (seen_big_h || seen_big_d || seen_double_big_d)
2160 this_argclass = decfloat_arg;
2161 else if (seen_big_l)
2162 this_argclass = long_double_arg;
2164 this_argclass = double_arg;
2166 if (lcount || seen_h)
2171 error (_("`*' not supported for precision or width in printf"));
2174 error (_("Format specifier `n' not supported in printf"));
2177 error (_("Incomplete format specifier at end of format string"));
2180 error (_("Unrecognized format specifier '%c' in printf"), *f);
2184 error (_("Inappropriate modifiers to format specifier '%c' in printf"),
2189 if (lcount > 1 && USE_PRINTF_I64)
2191 /* Windows' printf does support long long, but not the usual way.
2192 Convert %lld to %I64d. */
2193 int length_before_ll = f - last_arg - 1 - lcount;
2194 strncpy (current_substring, last_arg, length_before_ll);
2195 strcpy (current_substring + length_before_ll, "I64");
2196 current_substring[length_before_ll + 3] =
2197 last_arg[length_before_ll + lcount];
2198 current_substring += length_before_ll + 4;
2200 else if (this_argclass == wide_string_arg
2201 || this_argclass == wide_char_arg)
2203 /* Convert %ls or %lc to %s. */
2204 int length_before_ls = f - last_arg - 2;
2205 strncpy (current_substring, last_arg, length_before_ls);
2206 strcpy (current_substring + length_before_ls, "s");
2207 current_substring += length_before_ls + 2;
2211 strncpy (current_substring, last_arg, f - last_arg);
2212 current_substring += f - last_arg;
2214 *current_substring++ = '\0';
2216 argclass[nargs_wanted++] = this_argclass;
2219 /* Now, parse all arguments and evaluate them.
2220 Store the VALUEs in VAL_ARGS. */
2225 if (nargs == allocated_args)
2226 val_args = (struct value **) xrealloc ((char *) val_args,
2227 (allocated_args *= 2)
2228 * sizeof (struct value *));
2230 val_args[nargs] = parse_to_comma_and_eval (&s1);
2238 if (nargs != nargs_wanted)
2239 error (_("Wrong number of arguments for specified format-string"));
2241 /* Now actually print them. */
2242 current_substring = substrings;
2243 for (i = 0; i < nargs; i++)
2245 switch (argclass[i])
2252 tem = value_as_address (val_args[i]);
2254 /* This is a %s argument. Find the length of the string. */
2259 read_memory (tem + j, &c, 1);
2264 /* Copy the string contents into a string inside GDB. */
2265 str = (gdb_byte *) alloca (j + 1);
2267 read_memory (tem, str, j);
2270 printf_filtered (current_substring, (char *) str);
2273 case wide_string_arg:
2278 struct type *wctype = lookup_typename (current_language,
2280 "wchar_t", NULL, 0);
2281 int wcwidth = TYPE_LENGTH (wctype);
2282 gdb_byte *buf = alloca (wcwidth);
2283 struct obstack output;
2284 struct cleanup *inner_cleanup;
2286 tem = value_as_address (val_args[i]);
2288 /* This is a %s argument. Find the length of the string. */
2289 for (j = 0;; j += wcwidth)
2292 read_memory (tem + j, buf, wcwidth);
2293 if (extract_unsigned_integer (buf, wcwidth) == 0)
2297 /* Copy the string contents into a string inside GDB. */
2298 str = (gdb_byte *) alloca (j + wcwidth);
2300 read_memory (tem, str, j);
2301 memset (&str[j], 0, wcwidth);
2303 obstack_init (&output);
2304 inner_cleanup = make_cleanup_obstack_free (&output);
2306 convert_between_encodings (target_wide_charset (),
2309 &output, translit_char);
2310 obstack_grow_str0 (&output, "");
2312 printf_filtered (current_substring, obstack_base (&output));
2313 do_cleanups (inner_cleanup);
2318 struct type *wctype = lookup_typename (current_language,
2320 "wchar_t", NULL, 0);
2321 struct type *valtype;
2322 struct obstack output;
2323 struct cleanup *inner_cleanup;
2324 const gdb_byte *bytes;
2326 valtype = value_type (val_args[i]);
2327 if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype)
2328 || TYPE_CODE (valtype) != TYPE_CODE_INT)
2329 error (_("expected wchar_t argument for %%lc"));
2331 bytes = value_contents (val_args[i]);
2333 obstack_init (&output);
2334 inner_cleanup = make_cleanup_obstack_free (&output);
2336 convert_between_encodings (target_wide_charset (),
2338 bytes, TYPE_LENGTH (valtype),
2339 TYPE_LENGTH (valtype),
2340 &output, translit_char);
2341 obstack_grow_str0 (&output, "");
2343 printf_filtered (current_substring, obstack_base (&output));
2344 do_cleanups (inner_cleanup);
2349 struct type *type = value_type (val_args[i]);
2353 /* If format string wants a float, unchecked-convert the value
2354 to floating point of the same size. */
2355 type = float_type_from_length (current_gdbarch, type);
2356 val = unpack_double (type, value_contents (val_args[i]), &inv);
2358 error (_("Invalid floating value found in program."));
2360 printf_filtered (current_substring, (double) val);
2363 case long_double_arg:
2364 #ifdef HAVE_LONG_DOUBLE
2366 struct type *type = value_type (val_args[i]);
2370 /* If format string wants a float, unchecked-convert the value
2371 to floating point of the same size. */
2372 type = float_type_from_length (current_gdbarch, type);
2373 val = unpack_double (type, value_contents (val_args[i]), &inv);
2375 error (_("Invalid floating value found in program."));
2377 printf_filtered (current_substring, (long double) val);
2381 error (_("long double not supported in printf"));
2384 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2386 long long val = value_as_long (val_args[i]);
2387 printf_filtered (current_substring, val);
2391 error (_("long long not supported in printf"));
2395 int val = value_as_long (val_args[i]);
2396 printf_filtered (current_substring, val);
2401 long val = value_as_long (val_args[i]);
2402 printf_filtered (current_substring, val);
2406 /* Handles decimal floating values. */
2409 const gdb_byte *param_ptr = value_contents (val_args[i]);
2410 #if defined (PRINTF_HAS_DECFLOAT)
2411 /* If we have native support for Decimal floating
2412 printing, handle it here. */
2413 printf_filtered (current_substring, param_ptr);
2416 /* As a workaround until vasprintf has native support for DFP
2417 we convert the DFP values to string and print them using
2418 the %s format specifier. */
2421 int nnull_chars = 0;
2423 /* Parameter data. */
2424 struct type *param_type = value_type (val_args[i]);
2425 unsigned int param_len = TYPE_LENGTH (param_type);
2427 /* DFP output data. */
2428 struct value *dfp_value = NULL;
2432 struct type *dfp_type = NULL;
2433 char decstr[MAX_DECIMAL_STRING];
2435 /* Points to the end of the string so that we can go back
2436 and check for DFP length modifiers. */
2437 eos = current_substring + strlen (current_substring);
2439 /* Look for the float/double format specifier. */
2440 while (*eos != 'f' && *eos != 'e' && *eos != 'E'
2441 && *eos != 'g' && *eos != 'G')
2446 /* Search for the '%' char and extract the size and type of
2447 the output decimal value based on its modifiers
2448 (%Hf, %Df, %DDf). */
2449 while (*--sos != '%')
2454 dfp_type = builtin_type (current_gdbarch)->builtin_decfloat;
2456 else if (*sos == 'D' && *(sos - 1) == 'D')
2459 dfp_type = builtin_type (current_gdbarch)->builtin_declong;
2465 dfp_type = builtin_type (current_gdbarch)->builtin_decdouble;
2469 /* Replace %Hf, %Df and %DDf with %s's. */
2472 /* Go through the whole format string and pull the correct
2473 number of chars back to compensate for the change in the
2474 format specifier. */
2475 while (nnull_chars < nargs - i)
2483 /* Conversion between different DFP types. */
2484 if (TYPE_CODE (param_type) == TYPE_CODE_DECFLOAT)
2485 decimal_convert (param_ptr, param_len, dec, dfp_len);
2487 /* If this is a non-trivial conversion, just output 0.
2488 A correct converted value can be displayed by explicitly
2489 casting to a DFP type. */
2490 decimal_from_string (dec, dfp_len, "0");
2492 dfp_value = value_from_decfloat (dfp_type, dec);
2494 dfp_ptr = (gdb_byte *) value_contents (dfp_value);
2496 decimal_to_string (dfp_ptr, dfp_len, decstr);
2498 /* Print the DFP value. */
2499 printf_filtered (current_substring, decstr);
2507 /* We avoid the host's %p because pointers are too
2508 likely to be the wrong size. The only interesting
2509 modifier for %p is a width; extract that, and then
2510 handle %p as glibc would: %#x or a literal "(nil)". */
2512 char *p, *fmt, *fmt_p;
2513 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2514 long long val = value_as_long (val_args[i]);
2516 long val = value_as_long (val_args[i]);
2519 fmt = alloca (strlen (current_substring) + 5);
2521 /* Copy up to the leading %. */
2522 p = current_substring;
2526 int is_percent = (*p == '%');
2540 /* Copy any width. */
2541 while (*p >= '0' && *p < '9')
2544 gdb_assert (*p == 'p' && *(p + 1) == '\0');
2547 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2553 printf_filtered (fmt, val);
2559 printf_filtered (fmt, "(nil)");
2565 internal_error (__FILE__, __LINE__,
2566 _("failed internal consistency check"));
2568 /* Skip to the next substring. */
2569 current_substring += strlen (current_substring) + 1;
2571 /* Print the portion of the format string after the last argument. */
2572 puts_filtered (last_arg);
2574 do_cleanups (old_cleanups);
2578 _initialize_printcmd (void)
2580 struct cmd_list_element *c;
2582 current_display_number = -1;
2584 observer_attach_solib_unloaded (clear_dangling_display_expressions);
2586 add_info ("address", address_info,
2587 _("Describe where symbol SYM is stored."));
2589 add_info ("symbol", sym_info, _("\
2590 Describe what symbol is at location ADDR.\n\
2591 Only for symbols with fixed locations (global or static scope)."));
2593 add_com ("x", class_vars, x_command, _("\
2594 Examine memory: x/FMT ADDRESS.\n\
2595 ADDRESS is an expression for the memory address to examine.\n\
2596 FMT is a repeat count followed by a format letter and a size letter.\n\
2597 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2598 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\
2599 Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2600 The specified number of objects of the specified size are printed\n\
2601 according to the format.\n\n\
2602 Defaults for format and size letters are those previously used.\n\
2603 Default count is 1. Default address is following last thing printed\n\
2604 with this command or \"print\"."));
2607 add_com ("whereis", class_vars, whereis_command,
2608 _("Print line number and file of definition of variable."));
2611 add_info ("display", display_info, _("\
2612 Expressions to display when program stops, with code numbers."));
2614 add_cmd ("undisplay", class_vars, undisplay_command, _("\
2615 Cancel some expressions to be displayed when program stops.\n\
2616 Arguments are the code numbers of the expressions to stop displaying.\n\
2617 No argument means cancel all automatic-display expressions.\n\
2618 \"delete display\" has the same effect as this command.\n\
2619 Do \"info display\" to see current list of code numbers."),
2622 add_com ("display", class_vars, display_command, _("\
2623 Print value of expression EXP each time the program stops.\n\
2624 /FMT may be used before EXP as in the \"print\" command.\n\
2625 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2626 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2627 and examining is done as in the \"x\" command.\n\n\
2628 With no argument, display all currently requested auto-display expressions.\n\
2629 Use \"undisplay\" to cancel display requests previously made."));
2631 add_cmd ("display", class_vars, enable_display, _("\
2632 Enable some expressions to be displayed when program stops.\n\
2633 Arguments are the code numbers of the expressions to resume displaying.\n\
2634 No argument means enable all automatic-display expressions.\n\
2635 Do \"info display\" to see current list of code numbers."), &enablelist);
2637 add_cmd ("display", class_vars, disable_display_command, _("\
2638 Disable some expressions to be displayed when program stops.\n\
2639 Arguments are the code numbers of the expressions to stop displaying.\n\
2640 No argument means disable all automatic-display expressions.\n\
2641 Do \"info display\" to see current list of code numbers."), &disablelist);
2643 add_cmd ("display", class_vars, undisplay_command, _("\
2644 Cancel some expressions to be displayed when program stops.\n\
2645 Arguments are the code numbers of the expressions to stop displaying.\n\
2646 No argument means cancel all automatic-display expressions.\n\
2647 Do \"info display\" to see current list of code numbers."), &deletelist);
2649 add_com ("printf", class_vars, printf_command, _("\
2650 printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2651 This is useful for formatted output in user-defined commands."));
2653 add_com ("output", class_vars, output_command, _("\
2654 Like \"print\" but don't put in value history and don't print newline.\n\
2655 This is useful in user-defined commands."));
2657 add_prefix_cmd ("set", class_vars, set_command, _("\
2658 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2659 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2660 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2661 with $), a register (a few standard names starting with $), or an actual\n\
2662 variable in the program being debugged. EXP is any valid expression.\n\
2663 Use \"set variable\" for variables with names identical to set subcommands.\n\
2665 With a subcommand, this command modifies parts of the gdb environment.\n\
2666 You can see these environment settings with the \"show\" command."),
2667 &setlist, "set ", 1, &cmdlist);
2669 add_com ("assign", class_vars, set_command, _("\
2670 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2671 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2672 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2673 with $), a register (a few standard names starting with $), or an actual\n\
2674 variable in the program being debugged. EXP is any valid expression.\n\
2675 Use \"set variable\" for variables with names identical to set subcommands.\n\
2676 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2677 You can see these environment settings with the \"show\" command."));
2679 /* "call" is the same as "set", but handy for dbx users to call fns. */
2680 c = add_com ("call", class_vars, call_command, _("\
2681 Call a function in the program.\n\
2682 The argument is the function name and arguments, in the notation of the\n\
2683 current working language. The result is printed and saved in the value\n\
2684 history, if it is not void."));
2685 set_cmd_completer (c, expression_completer);
2687 add_cmd ("variable", class_vars, set_command, _("\
2688 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2689 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2690 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2691 with $), a register (a few standard names starting with $), or an actual\n\
2692 variable in the program being debugged. EXP is any valid expression.\n\
2693 This may usually be abbreviated to simply \"set\"."),
2696 c = add_com ("print", class_vars, print_command, _("\
2697 Print value of expression EXP.\n\
2698 Variables accessible are those of the lexical environment of the selected\n\
2699 stack frame, plus all those whose scope is global or an entire file.\n\
2701 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2702 $$NUM refers to NUM'th value back from the last one.\n\
2703 Names starting with $ refer to registers (with the values they would have\n\
2704 if the program were to return to the stack frame now selected, restoring\n\
2705 all registers saved by frames farther in) or else to debugger\n\
2706 \"convenience\" variables (any such name not a known register).\n\
2707 Use assignment expressions to give values to convenience variables.\n\
2709 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2710 @ is a binary operator for treating consecutive data objects\n\
2711 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2712 element is FOO, whose second element is stored in the space following\n\
2713 where FOO is stored, etc. FOO must be an expression whose value\n\
2714 resides in memory.\n\
2716 EXP may be preceded with /FMT, where FMT is a format letter\n\
2717 but no count or size letter (see \"x\" command)."));
2718 set_cmd_completer (c, expression_completer);
2719 add_com_alias ("p", "print", class_vars, 1);
2721 c = add_com ("inspect", class_vars, inspect_command, _("\
2722 Same as \"print\" command, except that if you are running in the epoch\n\
2723 environment, the value is printed in its own window."));
2724 set_cmd_completer (c, expression_completer);
2726 add_setshow_uinteger_cmd ("max-symbolic-offset", no_class,
2727 &max_symbolic_offset, _("\
2728 Set the largest offset that will be printed in <symbol+1234> form."), _("\
2729 Show the largest offset that will be printed in <symbol+1234> form."), NULL,
2731 show_max_symbolic_offset,
2732 &setprintlist, &showprintlist);
2733 add_setshow_boolean_cmd ("symbol-filename", no_class,
2734 &print_symbol_filename, _("\
2735 Set printing of source filename and line number with <symbol>."), _("\
2736 Show printing of source filename and line number with <symbol>."), NULL,
2738 show_print_symbol_filename,
2739 &setprintlist, &showprintlist);