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. */
87 static CORE_ADDR next_address;
89 /* Number of delay instructions following current disassembled insn. */
91 static int branch_delay_insns;
93 /* Last address examined. */
95 static CORE_ADDR last_examine_address;
97 /* Contents of last address examined.
98 This is not valid past the end of the `x' command! */
100 static struct value *last_examine_value;
102 /* Largest offset between a symbolic value and an address, that will be
103 printed as `0x1234 <symbol+offset>'. */
105 static unsigned int max_symbolic_offset = UINT_MAX;
107 show_max_symbolic_offset (struct ui_file *file, int from_tty,
108 struct cmd_list_element *c, const char *value)
110 fprintf_filtered (file, _("\
111 The largest offset that will be printed in <symbol+1234> form is %s.\n"),
115 /* Append the source filename and linenumber of the symbol when
116 printing a symbolic value as `<symbol at filename:linenum>' if set. */
117 static int print_symbol_filename = 0;
119 show_print_symbol_filename (struct ui_file *file, int from_tty,
120 struct cmd_list_element *c, const char *value)
122 fprintf_filtered (file, _("\
123 Printing of source filename and line number with <symbol> is %s.\n"),
127 /* Number of auto-display expression currently being displayed.
128 So that we can disable it if we get an error or a signal within it.
129 -1 when not doing one. */
131 int current_display_number;
135 /* Chain link to next auto-display item. */
136 struct display *next;
137 /* The expression as the user typed it. */
139 /* Expression to be evaluated and displayed. */
140 struct expression *exp;
141 /* Item number of this auto-display item. */
143 /* Display format specified. */
144 struct format_data format;
145 /* Innermost block required by this expression when evaluated */
147 /* Status of this display (enabled or disabled) */
151 /* Chain of expressions whose values should be displayed
152 automatically each time the program stops. */
154 static struct display *display_chain;
156 static int display_number;
158 /* Prototypes for exported functions. */
160 void output_command (char *, int);
162 void _initialize_printcmd (void);
164 /* Prototypes for local functions. */
166 static void do_one_display (struct display *);
169 /* Decode a format specification. *STRING_PTR should point to it.
170 OFORMAT and OSIZE are used as defaults for the format and size
171 if none are given in the format specification.
172 If OSIZE is zero, then the size field of the returned value
173 should be set only if a size is explicitly specified by the
175 The structure returned describes all the data
176 found in the specification. In addition, *STRING_PTR is advanced
177 past the specification and past all whitespace following it. */
179 static struct format_data
180 decode_format (char **string_ptr, int oformat, int osize)
182 struct format_data val;
183 char *p = *string_ptr;
190 if (*p >= '0' && *p <= '9')
191 val.count = atoi (p);
192 while (*p >= '0' && *p <= '9')
195 /* Now process size or format letters that follow. */
199 if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g')
206 else if (*p >= 'a' && *p <= 'z')
212 while (*p == ' ' || *p == '\t')
216 /* Set defaults for format and size if not specified. */
217 if (val.format == '?')
221 /* Neither has been specified. */
222 val.format = oformat;
226 /* If a size is specified, any format makes a reasonable
227 default except 'i'. */
228 val.format = oformat == 'i' ? 'x' : oformat;
230 else if (val.size == '?')
235 /* Pick the appropriate size for an address. */
236 if (gdbarch_ptr_bit (current_gdbarch) == 64)
237 val.size = osize ? 'g' : osize;
238 else if (gdbarch_ptr_bit (current_gdbarch) == 32)
239 val.size = osize ? 'w' : osize;
240 else if (gdbarch_ptr_bit (current_gdbarch) == 16)
241 val.size = osize ? 'h' : osize;
243 /* Bad value for gdbarch_ptr_bit. */
244 internal_error (__FILE__, __LINE__,
245 _("failed internal consistency check"));
248 /* Floating point has to be word or giantword. */
249 if (osize == 'w' || osize == 'g')
252 /* Default it to giantword if the last used size is not
254 val.size = osize ? 'g' : osize;
257 /* Characters default to one byte. */
258 val.size = osize ? 'b' : osize;
261 /* The default is the size most recently specified. */
268 /* Print value VAL on stream according to OPTIONS.
269 Do not end with a newline.
270 SIZE is the letter for the size of datum being printed.
271 This is used to pad hex numbers so they line up. SIZE is 0
272 for print / output and set for examine. */
275 print_formatted (struct value *val, int size,
276 const struct value_print_options *options,
277 struct ui_file *stream)
279 struct type *type = check_typedef (value_type (val));
280 int len = TYPE_LENGTH (type);
282 if (VALUE_LVAL (val) == lval_memory)
283 next_address = value_address (val) + len;
287 switch (options->format)
291 struct type *elttype = value_type (val);
292 next_address = (value_address (val)
293 + val_print_string (elttype,
294 value_address (val), -1,
300 /* We often wrap here if there are long symbolic names. */
302 next_address = (value_address (val)
303 + gdb_print_insn (value_address (val), stream,
304 &branch_delay_insns));
309 if (options->format == 0 || options->format == 's'
310 || TYPE_CODE (type) == TYPE_CODE_REF
311 || TYPE_CODE (type) == TYPE_CODE_ARRAY
312 || TYPE_CODE (type) == TYPE_CODE_STRING
313 || TYPE_CODE (type) == TYPE_CODE_STRUCT
314 || TYPE_CODE (type) == TYPE_CODE_UNION
315 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
316 value_print (val, stream, options);
318 /* User specified format, so don't look to the the type to
319 tell us what to do. */
320 print_scalar_formatted (value_contents (val), type,
321 options, size, stream);
324 /* Return builtin floating point type of same length as TYPE.
325 If no such type is found, return TYPE itself. */
327 float_type_from_length (struct gdbarch *gdbarch, struct type *type)
329 const struct builtin_type *builtin = builtin_type (gdbarch);
330 unsigned int len = TYPE_LENGTH (type);
332 if (len == TYPE_LENGTH (builtin->builtin_float))
333 type = builtin->builtin_float;
334 else if (len == TYPE_LENGTH (builtin->builtin_double))
335 type = builtin->builtin_double;
336 else if (len == TYPE_LENGTH (builtin->builtin_long_double))
337 type = builtin->builtin_long_double;
342 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
343 according to OPTIONS and SIZE on STREAM.
344 Formats s and i are not supported at this level.
346 This is how the elements of an array or structure are printed
350 print_scalar_formatted (const void *valaddr, struct type *type,
351 const struct value_print_options *options,
352 int size, struct ui_file *stream)
354 LONGEST val_long = 0;
355 unsigned int len = TYPE_LENGTH (type);
356 enum bfd_endian byte_order = gdbarch_byte_order (current_gdbarch);
358 /* If we get here with a string format, try again without it. Go
359 all the way back to the language printers, which may call us
361 if (options->format == 's')
363 struct value_print_options opts = *options;
366 val_print (type, valaddr, 0, 0, stream, 0, &opts,
371 if (len > sizeof(LONGEST) &&
372 (TYPE_CODE (type) == TYPE_CODE_INT
373 || TYPE_CODE (type) == TYPE_CODE_ENUM))
375 switch (options->format)
378 print_octal_chars (stream, valaddr, len, byte_order);
382 print_decimal_chars (stream, valaddr, len, byte_order);
385 print_binary_chars (stream, valaddr, len, byte_order);
388 print_hex_chars (stream, valaddr, len, byte_order);
391 print_char_chars (stream, type, valaddr, len, byte_order);
398 if (options->format != 'f')
399 val_long = unpack_long (type, valaddr);
401 /* If the value is a pointer, and pointers and addresses are not the
402 same, then at this point, the value's length (in target bytes) is
403 gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
404 if (TYPE_CODE (type) == TYPE_CODE_PTR)
405 len = gdbarch_addr_bit (current_gdbarch) / TARGET_CHAR_BIT;
407 /* If we are printing it as unsigned, truncate it in case it is actually
408 a negative signed value (e.g. "print/u (short)-1" should print 65535
409 (if shorts are 16 bits) instead of 4294967295). */
410 if (options->format != 'd')
412 if (len < sizeof (LONGEST))
413 val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1;
416 switch (options->format)
421 /* No size specified, like in print. Print varying # of digits. */
422 print_longest (stream, 'x', 1, val_long);
431 print_longest (stream, size, 1, val_long);
434 error (_("Undefined output size \"%c\"."), size);
439 print_longest (stream, 'd', 1, val_long);
443 print_longest (stream, 'u', 0, val_long);
448 print_longest (stream, 'o', 1, val_long);
450 fprintf_filtered (stream, "0");
455 CORE_ADDR addr = unpack_pointer (type, valaddr);
456 print_address (addr, stream);
462 struct value_print_options opts = *options;
464 if (TYPE_UNSIGNED (type))
465 value_print (value_from_longest (builtin_type_true_unsigned_char,
469 value_print (value_from_longest (builtin_type_true_char, val_long),
475 type = float_type_from_length (current_gdbarch, type);
476 print_floating (valaddr, type, stream);
480 internal_error (__FILE__, __LINE__,
481 _("failed internal consistency check"));
484 /* Binary; 't' stands for "two". */
486 char bits[8 * (sizeof val_long) + 1];
487 char buf[8 * (sizeof val_long) + 32];
492 width = 8 * (sizeof val_long);
509 error (_("Undefined output size \"%c\"."), size);
515 bits[width] = (val_long & 1) ? '1' : '0';
520 while (*cp && *cp == '0')
526 fputs_filtered (buf, stream);
531 error (_("Undefined output format \"%c\"."), options->format);
535 /* Specify default address for `x' command.
536 The `info lines' command uses this. */
539 set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr)
541 struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
545 /* Make address available to the user as $_. */
546 set_internalvar (lookup_internalvar ("_"),
547 value_from_pointer (ptr_type, addr));
550 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
551 after LEADIN. Print nothing if no symbolic name is found nearby.
552 Optionally also print source file and line number, if available.
553 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
554 or to interpret it as a possible C++ name and convert it back to source
555 form. However note that DO_DEMANGLE can be overridden by the specific
556 settings of the demangle and asm_demangle variables. */
559 print_address_symbolic (CORE_ADDR addr, struct ui_file *stream,
560 int do_demangle, char *leadin)
563 char *filename = NULL;
568 /* Throw away both name and filename. */
569 struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name);
570 make_cleanup (free_current_contents, &filename);
572 if (build_address_symbolic (addr, do_demangle, &name, &offset,
573 &filename, &line, &unmapped))
575 do_cleanups (cleanup_chain);
579 fputs_filtered (leadin, stream);
581 fputs_filtered ("<*", stream);
583 fputs_filtered ("<", stream);
584 fputs_filtered (name, stream);
586 fprintf_filtered (stream, "+%u", (unsigned int) offset);
588 /* Append source filename and line number if desired. Give specific
589 line # of this addr, if we have it; else line # of the nearest symbol. */
590 if (print_symbol_filename && filename != NULL)
593 fprintf_filtered (stream, " at %s:%d", filename, line);
595 fprintf_filtered (stream, " in %s", filename);
598 fputs_filtered ("*>", stream);
600 fputs_filtered (">", stream);
602 do_cleanups (cleanup_chain);
605 /* Given an address ADDR return all the elements needed to print the
606 address in a symbolic form. NAME can be mangled or not depending
607 on DO_DEMANGLE (and also on the asm_demangle global variable,
608 manipulated via ''set print asm-demangle''). Return 0 in case of
609 success, when all the info in the OUT paramters is valid. Return 1
612 build_address_symbolic (CORE_ADDR addr, /* IN */
613 int do_demangle, /* IN */
614 char **name, /* OUT */
615 int *offset, /* OUT */
616 char **filename, /* OUT */
618 int *unmapped) /* OUT */
620 struct minimal_symbol *msymbol;
621 struct symbol *symbol;
622 CORE_ADDR name_location = 0;
623 struct obj_section *section = NULL;
624 char *name_temp = "";
626 /* Let's say it is mapped (not unmapped). */
629 /* Determine if the address is in an overlay, and whether it is
631 if (overlay_debugging)
633 section = find_pc_overlay (addr);
634 if (pc_in_unmapped_range (addr, section))
637 addr = overlay_mapped_address (addr, section);
641 /* First try to find the address in the symbol table, then
642 in the minsyms. Take the closest one. */
644 /* This is defective in the sense that it only finds text symbols. So
645 really this is kind of pointless--we should make sure that the
646 minimal symbols have everything we need (by changing that we could
647 save some memory, but for many debug format--ELF/DWARF or
648 anything/stabs--it would be inconvenient to eliminate those minimal
650 msymbol = lookup_minimal_symbol_by_pc_section (addr, section);
651 symbol = find_pc_sect_function (addr, section);
655 name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol));
656 if (do_demangle || asm_demangle)
657 name_temp = SYMBOL_PRINT_NAME (symbol);
659 name_temp = SYMBOL_LINKAGE_NAME (symbol);
664 if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL)
666 /* The msymbol is closer to the address than the symbol;
667 use the msymbol instead. */
669 name_location = SYMBOL_VALUE_ADDRESS (msymbol);
670 if (do_demangle || asm_demangle)
671 name_temp = SYMBOL_PRINT_NAME (msymbol);
673 name_temp = SYMBOL_LINKAGE_NAME (msymbol);
676 if (symbol == NULL && msymbol == NULL)
679 /* If the nearest symbol is too far away, don't print anything symbolic. */
681 /* For when CORE_ADDR is larger than unsigned int, we do math in
682 CORE_ADDR. But when we detect unsigned wraparound in the
683 CORE_ADDR math, we ignore this test and print the offset,
684 because addr+max_symbolic_offset has wrapped through the end
685 of the address space back to the beginning, giving bogus comparison. */
686 if (addr > name_location + max_symbolic_offset
687 && name_location + max_symbolic_offset > name_location)
690 *offset = addr - name_location;
692 *name = xstrdup (name_temp);
694 if (print_symbol_filename)
696 struct symtab_and_line sal;
698 sal = find_pc_sect_line (addr, section, 0);
702 *filename = xstrdup (sal.symtab->filename);
710 /* Print address ADDR symbolically on STREAM.
711 First print it as a number. Then perhaps print
712 <SYMBOL + OFFSET> after the number. */
715 print_address (CORE_ADDR addr, struct ui_file *stream)
717 fputs_filtered (paddress (addr), stream);
718 print_address_symbolic (addr, stream, asm_demangle, " ");
721 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
722 controls whether to print the symbolic name "raw" or demangled.
723 Global setting "addressprint" controls whether to print hex address
727 print_address_demangle (CORE_ADDR addr, struct ui_file *stream,
730 struct value_print_options opts;
731 get_user_print_options (&opts);
734 fprintf_filtered (stream, "0");
736 else if (opts.addressprint)
738 fputs_filtered (paddress (addr), stream);
739 print_address_symbolic (addr, stream, do_demangle, " ");
743 print_address_symbolic (addr, stream, do_demangle, "");
748 /* These are the types that $__ will get after an examine command of one
751 static struct type *examine_i_type;
753 static struct type *examine_b_type;
754 static struct type *examine_h_type;
755 static struct type *examine_w_type;
756 static struct type *examine_g_type;
758 /* Examine data at address ADDR in format FMT.
759 Fetch it from memory and print on gdb_stdout. */
762 do_examine (struct format_data fmt, CORE_ADDR addr)
767 struct type *val_type = NULL;
770 struct value_print_options opts;
777 /* String or instruction format implies fetch single bytes
778 regardless of the specified size. */
779 if (format == 's' || format == 'i')
783 val_type = examine_i_type;
784 else if (size == 'b')
785 val_type = examine_b_type;
786 else if (size == 'h')
787 val_type = examine_h_type;
788 else if (size == 'w')
789 val_type = examine_w_type;
790 else if (size == 'g')
791 val_type = examine_g_type;
798 if (format == 's' || format == 'i')
801 get_formatted_print_options (&opts, format);
803 /* Print as many objects as specified in COUNT, at most maxelts per line,
804 with the address of the next one at the start of each line. */
809 print_address (next_address, gdb_stdout);
810 printf_filtered (":");
815 printf_filtered ("\t");
816 /* Note that print_formatted sets next_address for the next
818 last_examine_address = next_address;
820 if (last_examine_value)
821 value_free (last_examine_value);
823 /* The value to be displayed is not fetched greedily.
824 Instead, to avoid the possibility of a fetched value not
825 being used, its retrieval is delayed until the print code
826 uses it. When examining an instruction stream, the
827 disassembler will perform its own memory fetch using just
828 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
829 the disassembler be modified so that LAST_EXAMINE_VALUE
830 is left with the byte sequence from the last complete
831 instruction fetched from memory? */
832 last_examine_value = value_at_lazy (val_type, next_address);
834 if (last_examine_value)
835 release_value (last_examine_value);
837 print_formatted (last_examine_value, size, &opts, gdb_stdout);
839 /* Display any branch delay slots following the final insn. */
840 if (format == 'i' && count == 1)
841 count += branch_delay_insns;
843 printf_filtered ("\n");
844 gdb_flush (gdb_stdout);
849 validate_format (struct format_data fmt, char *cmdname)
852 error (_("Size letters are meaningless in \"%s\" command."), cmdname);
854 error (_("Item count other than 1 is meaningless in \"%s\" command."),
856 if (fmt.format == 'i')
857 error (_("Format letter \"%c\" is meaningless in \"%s\" command."),
858 fmt.format, cmdname);
861 /* Evaluate string EXP as an expression in the current language and
862 print the resulting value. EXP may contain a format specifier as the
863 first argument ("/x myvar" for example, to print myvar in hex). */
866 print_command_1 (char *exp, int inspect, int voidprint)
868 struct expression *expr;
869 struct cleanup *old_chain = 0;
872 struct format_data fmt;
875 if (exp && *exp == '/')
878 fmt = decode_format (&exp, last_format, 0);
879 validate_format (fmt, "print");
880 last_format = format = fmt.format;
893 expr = parse_expression (exp);
894 old_chain = make_cleanup (free_current_contents, &expr);
896 val = evaluate_expression (expr);
899 val = access_value_history (0);
901 if (voidprint || (val && value_type (val) &&
902 TYPE_CODE (value_type (val)) != TYPE_CODE_VOID))
904 struct value_print_options opts;
905 int histindex = record_latest_value (val);
908 annotate_value_history_begin (histindex, value_type (val));
910 annotate_value_begin (value_type (val));
913 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"",
915 else if (histindex >= 0)
916 printf_filtered ("$%d = ", histindex);
919 annotate_value_history_value ();
921 get_formatted_print_options (&opts, format);
922 opts.inspect_it = inspect;
925 print_formatted (val, fmt.size, &opts, gdb_stdout);
926 printf_filtered ("\n");
929 annotate_value_history_end ();
931 annotate_value_end ();
934 printf_unfiltered ("\") )\030");
938 do_cleanups (old_chain);
942 print_command (char *exp, int from_tty)
944 print_command_1 (exp, 0, 1);
947 /* Same as print, except in epoch, it gets its own window. */
949 inspect_command (char *exp, int from_tty)
951 extern int epoch_interface;
953 print_command_1 (exp, epoch_interface, 1);
956 /* Same as print, except it doesn't print void results. */
958 call_command (char *exp, int from_tty)
960 print_command_1 (exp, 0, 0);
964 output_command (char *exp, int from_tty)
966 struct expression *expr;
967 struct cleanup *old_chain;
970 struct format_data fmt;
971 struct value_print_options opts;
976 if (exp && *exp == '/')
979 fmt = decode_format (&exp, 0, 0);
980 validate_format (fmt, "output");
984 expr = parse_expression (exp);
985 old_chain = make_cleanup (free_current_contents, &expr);
987 val = evaluate_expression (expr);
989 annotate_value_begin (value_type (val));
991 get_formatted_print_options (&opts, format);
993 print_formatted (val, fmt.size, &opts, gdb_stdout);
995 annotate_value_end ();
998 gdb_flush (gdb_stdout);
1000 do_cleanups (old_chain);
1004 set_command (char *exp, int from_tty)
1006 struct expression *expr = parse_expression (exp);
1007 struct cleanup *old_chain =
1008 make_cleanup (free_current_contents, &expr);
1009 evaluate_expression (expr);
1010 do_cleanups (old_chain);
1014 sym_info (char *arg, int from_tty)
1016 struct minimal_symbol *msymbol;
1017 struct objfile *objfile;
1018 struct obj_section *osect;
1019 CORE_ADDR addr, sect_addr;
1021 unsigned int offset;
1024 error_no_arg (_("address"));
1026 addr = parse_and_eval_address (arg);
1027 ALL_OBJSECTIONS (objfile, osect)
1029 /* Only process each object file once, even if there's a separate
1031 if (objfile->separate_debug_objfile_backlink)
1034 sect_addr = overlay_mapped_address (addr, osect);
1036 if (obj_section_addr (osect) <= sect_addr
1037 && sect_addr < obj_section_endaddr (osect)
1038 && (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, osect)))
1040 const char *obj_name, *mapped, *sec_name, *msym_name;
1042 struct cleanup *old_chain;
1045 offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol);
1046 mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped");
1047 sec_name = osect->the_bfd_section->name;
1048 msym_name = SYMBOL_PRINT_NAME (msymbol);
1050 /* Don't print the offset if it is zero.
1051 We assume there's no need to handle i18n of "sym + offset". */
1053 loc_string = xstrprintf ("%s + %u", msym_name, offset);
1055 loc_string = xstrprintf ("%s", msym_name);
1057 /* Use a cleanup to free loc_string in case the user quits
1058 a pagination request inside printf_filtered. */
1059 old_chain = make_cleanup (xfree, loc_string);
1061 gdb_assert (osect->objfile && osect->objfile->name);
1062 obj_name = osect->objfile->name;
1064 if (MULTI_OBJFILE_P ())
1065 if (pc_in_unmapped_range (addr, osect))
1066 if (section_is_overlay (osect))
1067 printf_filtered (_("%s in load address range of "
1068 "%s overlay section %s of %s\n"),
1069 loc_string, mapped, sec_name, obj_name);
1071 printf_filtered (_("%s in load address range of "
1072 "section %s of %s\n"),
1073 loc_string, sec_name, obj_name);
1075 if (section_is_overlay (osect))
1076 printf_filtered (_("%s in %s overlay section %s of %s\n"),
1077 loc_string, mapped, sec_name, obj_name);
1079 printf_filtered (_("%s in section %s of %s\n"),
1080 loc_string, sec_name, obj_name);
1082 if (pc_in_unmapped_range (addr, osect))
1083 if (section_is_overlay (osect))
1084 printf_filtered (_("%s in load address range of %s overlay "
1086 loc_string, mapped, sec_name);
1088 printf_filtered (_("%s in load address range of section %s\n"),
1089 loc_string, sec_name);
1091 if (section_is_overlay (osect))
1092 printf_filtered (_("%s in %s overlay section %s\n"),
1093 loc_string, mapped, sec_name);
1095 printf_filtered (_("%s in section %s\n"),
1096 loc_string, sec_name);
1098 do_cleanups (old_chain);
1102 printf_filtered (_("No symbol matches %s.\n"), arg);
1106 address_info (char *exp, int from_tty)
1108 struct gdbarch *gdbarch;
1111 struct minimal_symbol *msymbol;
1113 struct obj_section *section;
1114 CORE_ADDR load_addr;
1115 int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero
1116 if exp is a field of `this'. */
1119 error (_("Argument required."));
1121 sym = lookup_symbol (exp, get_selected_block (0), VAR_DOMAIN,
1122 &is_a_field_of_this);
1125 if (is_a_field_of_this)
1127 printf_filtered ("Symbol \"");
1128 fprintf_symbol_filtered (gdb_stdout, exp,
1129 current_language->la_language, DMGL_ANSI);
1130 printf_filtered ("\" is a field of the local class variable ");
1131 if (current_language->la_language == language_objc)
1132 printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
1134 printf_filtered ("`this'\n");
1138 msymbol = lookup_minimal_symbol (exp, NULL, NULL);
1140 if (msymbol != NULL)
1142 load_addr = SYMBOL_VALUE_ADDRESS (msymbol);
1144 printf_filtered ("Symbol \"");
1145 fprintf_symbol_filtered (gdb_stdout, exp,
1146 current_language->la_language, DMGL_ANSI);
1147 printf_filtered ("\" is at ");
1148 fputs_filtered (paddress (load_addr), gdb_stdout);
1149 printf_filtered (" in a file compiled without debugging");
1150 section = SYMBOL_OBJ_SECTION (msymbol);
1151 if (section_is_overlay (section))
1153 load_addr = overlay_unmapped_address (load_addr, section);
1154 printf_filtered (",\n -- loaded at ");
1155 fputs_filtered (paddress (load_addr), gdb_stdout);
1156 printf_filtered (" in overlay section %s",
1157 section->the_bfd_section->name);
1159 printf_filtered (".\n");
1162 error (_("No symbol \"%s\" in current context."), exp);
1166 printf_filtered ("Symbol \"");
1167 fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym),
1168 current_language->la_language, DMGL_ANSI);
1169 printf_filtered ("\" is ");
1170 val = SYMBOL_VALUE (sym);
1171 section = SYMBOL_OBJ_SECTION (sym);
1172 gdbarch = get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile);
1174 switch (SYMBOL_CLASS (sym))
1177 case LOC_CONST_BYTES:
1178 printf_filtered ("constant");
1182 printf_filtered ("a label at address ");
1183 fputs_filtered (paddress (load_addr = SYMBOL_VALUE_ADDRESS (sym)),
1185 if (section_is_overlay (section))
1187 load_addr = overlay_unmapped_address (load_addr, section);
1188 printf_filtered (",\n -- loaded at ");
1189 fputs_filtered (paddress (load_addr), gdb_stdout);
1190 printf_filtered (" in overlay section %s",
1191 section->the_bfd_section->name);
1196 /* FIXME: cagney/2004-01-26: It should be possible to
1197 unconditionally call the SYMBOL_COMPUTED_OPS method when available.
1198 Unfortunately DWARF 2 stores the frame-base (instead of the
1199 function) location in a function's symbol. Oops! For the
1200 moment enable this when/where applicable. */
1201 SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, gdb_stdout);
1205 /* GDBARCH is the architecture associated with the objfile the symbol
1206 is defined in; the target architecture may be different, and may
1207 provide additional registers. However, we do not know the target
1208 architecture at this point. We assume the objfile architecture
1209 will contain all the standard registers that occur in debug info
1211 regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
1213 if (SYMBOL_IS_ARGUMENT (sym))
1214 printf_filtered (_("an argument in register %s"),
1215 gdbarch_register_name (gdbarch, regno));
1217 printf_filtered (_("a variable in register %s"),
1218 gdbarch_register_name (gdbarch, regno));
1222 printf_filtered (_("static storage at address "));
1223 fputs_filtered (paddress (load_addr = SYMBOL_VALUE_ADDRESS (sym)),
1225 if (section_is_overlay (section))
1227 load_addr = overlay_unmapped_address (load_addr, section);
1228 printf_filtered (_(",\n -- loaded at "));
1229 fputs_filtered (paddress (load_addr), gdb_stdout);
1230 printf_filtered (_(" in overlay section %s"),
1231 section->the_bfd_section->name);
1235 case LOC_REGPARM_ADDR:
1236 /* Note comment at LOC_REGISTER. */
1237 regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
1238 printf_filtered (_("address of an argument in register %s"),
1239 gdbarch_register_name (gdbarch, regno));
1243 printf_filtered (_("an argument at offset %ld"), val);
1247 printf_filtered (_("a local variable at frame offset %ld"), val);
1251 printf_filtered (_("a reference argument at offset %ld"), val);
1255 printf_filtered (_("a typedef"));
1259 printf_filtered (_("a function at address "));
1260 load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
1261 fputs_filtered (paddress (load_addr), gdb_stdout);
1262 if (section_is_overlay (section))
1264 load_addr = overlay_unmapped_address (load_addr, section);
1265 printf_filtered (_(",\n -- loaded at "));
1266 fputs_filtered (paddress (load_addr), gdb_stdout);
1267 printf_filtered (_(" in overlay section %s"),
1268 section->the_bfd_section->name);
1272 case LOC_UNRESOLVED:
1274 struct minimal_symbol *msym;
1276 msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), NULL, NULL);
1278 printf_filtered ("unresolved");
1281 section = SYMBOL_OBJ_SECTION (msym);
1282 load_addr = SYMBOL_VALUE_ADDRESS (msym);
1285 && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0)
1286 printf_filtered (_("a thread-local variable at offset %s "
1287 "in the thread-local storage for `%s'"),
1288 paddr_nz (load_addr), section->objfile->name);
1291 printf_filtered (_("static storage at address "));
1292 fputs_filtered (paddress (load_addr), gdb_stdout);
1293 if (section_is_overlay (section))
1295 load_addr = overlay_unmapped_address (load_addr, section);
1296 printf_filtered (_(",\n -- loaded at "));
1297 fputs_filtered (paddress (load_addr), gdb_stdout);
1298 printf_filtered (_(" in overlay section %s"),
1299 section->the_bfd_section->name);
1306 case LOC_OPTIMIZED_OUT:
1307 printf_filtered (_("optimized out"));
1311 printf_filtered (_("of unknown (botched) type"));
1314 printf_filtered (".\n");
1319 x_command (char *exp, int from_tty)
1321 struct expression *expr;
1322 struct format_data fmt;
1323 struct cleanup *old_chain;
1326 fmt.format = last_format ? last_format : 'x';
1327 fmt.size = last_size;
1331 if (exp && *exp == '/')
1334 fmt = decode_format (&exp, last_format, last_size);
1337 /* If we have an expression, evaluate it and use it as the address. */
1339 if (exp != 0 && *exp != 0)
1341 expr = parse_expression (exp);
1342 /* Cause expression not to be there any more if this command is
1343 repeated with Newline. But don't clobber a user-defined
1344 command's definition. */
1347 old_chain = make_cleanup (free_current_contents, &expr);
1348 val = evaluate_expression (expr);
1349 if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF)
1350 val = value_ind (val);
1351 /* In rvalue contexts, such as this, functions are coerced into
1352 pointers to functions. This makes "x/i main" work. */
1353 if (/* last_format == 'i' && */
1354 TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC
1355 && VALUE_LVAL (val) == lval_memory)
1356 next_address = value_address (val);
1358 next_address = value_as_address (val);
1359 do_cleanups (old_chain);
1362 do_examine (fmt, next_address);
1364 /* If the examine succeeds, we remember its size and format for next
1366 last_size = fmt.size;
1367 last_format = fmt.format;
1369 /* Set a couple of internal variables if appropriate. */
1370 if (last_examine_value)
1372 /* Make last address examined available to the user as $_. Use
1373 the correct pointer type. */
1374 struct type *pointer_type
1375 = lookup_pointer_type (value_type (last_examine_value));
1376 set_internalvar (lookup_internalvar ("_"),
1377 value_from_pointer (pointer_type,
1378 last_examine_address));
1380 /* Make contents of last address examined available to the user
1381 as $__. If the last value has not been fetched from memory
1382 then don't fetch it now; instead mark it by voiding the $__
1384 if (value_lazy (last_examine_value))
1385 clear_internalvar (lookup_internalvar ("__"));
1387 set_internalvar (lookup_internalvar ("__"), last_examine_value);
1392 /* Add an expression to the auto-display chain.
1393 Specify the expression. */
1396 display_command (char *exp, int from_tty)
1398 struct format_data fmt;
1399 struct expression *expr;
1400 struct display *new;
1404 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1406 if (tui_active && exp != NULL && *exp == '$')
1407 display_it = (tui_set_layout_for_display_command (exp) == TUI_FAILURE);
1421 fmt = decode_format (&exp, 0, 0);
1422 if (fmt.size && fmt.format == 0)
1424 if (fmt.format == 'i' || fmt.format == 's')
1435 innermost_block = NULL;
1436 expr = parse_expression (exp);
1438 new = (struct display *) xmalloc (sizeof (struct display));
1440 new->exp_string = xstrdup (exp);
1442 new->block = innermost_block;
1443 new->next = display_chain;
1444 new->number = ++display_number;
1447 display_chain = new;
1449 if (from_tty && target_has_execution)
1450 do_one_display (new);
1457 free_display (struct display *d)
1459 xfree (d->exp_string);
1464 /* Clear out the display_chain. Done when new symtabs are loaded,
1465 since this invalidates the types stored in many expressions. */
1468 clear_displays (void)
1472 while ((d = display_chain) != NULL)
1474 display_chain = d->next;
1479 /* Delete the auto-display number NUM. */
1482 delete_display (int num)
1484 struct display *d1, *d;
1487 error (_("No display number %d."), num);
1489 if (display_chain->number == num)
1492 display_chain = d1->next;
1496 for (d = display_chain;; d = d->next)
1499 error (_("No display number %d."), num);
1500 if (d->next->number == num)
1510 /* Delete some values from the auto-display chain.
1511 Specify the element numbers. */
1514 undisplay_command (char *args, int from_tty)
1522 if (query (_("Delete all auto-display expressions? ")))
1531 while (*p1 >= '0' && *p1 <= '9')
1533 if (*p1 && *p1 != ' ' && *p1 != '\t')
1534 error (_("Arguments must be display numbers."));
1538 delete_display (num);
1541 while (*p == ' ' || *p == '\t')
1547 /* Display a single auto-display.
1548 Do nothing if the display cannot be printed in the current context,
1549 or if the display is disabled. */
1552 do_one_display (struct display *d)
1554 int within_current_scope;
1556 if (d->enabled_p == 0)
1561 volatile struct gdb_exception ex;
1562 TRY_CATCH (ex, RETURN_MASK_ALL)
1564 innermost_block = NULL;
1565 d->exp = parse_expression (d->exp_string);
1566 d->block = innermost_block;
1570 /* Can't re-parse the expression. Disable this display item. */
1572 warning (_("Unable to display \"%s\": %s"),
1573 d->exp_string, ex.message);
1579 within_current_scope = contained_in (get_selected_block (0), d->block);
1581 within_current_scope = 1;
1582 if (!within_current_scope)
1585 current_display_number = d->number;
1587 annotate_display_begin ();
1588 printf_filtered ("%d", d->number);
1589 annotate_display_number_end ();
1590 printf_filtered (": ");
1596 annotate_display_format ();
1598 printf_filtered ("x/");
1599 if (d->format.count != 1)
1600 printf_filtered ("%d", d->format.count);
1601 printf_filtered ("%c", d->format.format);
1602 if (d->format.format != 'i' && d->format.format != 's')
1603 printf_filtered ("%c", d->format.size);
1604 printf_filtered (" ");
1606 annotate_display_expression ();
1608 puts_filtered (d->exp_string);
1609 annotate_display_expression_end ();
1611 if (d->format.count != 1 || d->format.format == 'i')
1612 printf_filtered ("\n");
1614 printf_filtered (" ");
1616 val = evaluate_expression (d->exp);
1617 addr = value_as_address (val);
1618 if (d->format.format == 'i')
1619 addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr);
1621 annotate_display_value ();
1623 do_examine (d->format, addr);
1627 struct value_print_options opts;
1629 annotate_display_format ();
1631 if (d->format.format)
1632 printf_filtered ("/%c ", d->format.format);
1634 annotate_display_expression ();
1636 puts_filtered (d->exp_string);
1637 annotate_display_expression_end ();
1639 printf_filtered (" = ");
1641 annotate_display_expression ();
1643 get_formatted_print_options (&opts, d->format.format);
1644 opts.raw = d->format.raw;
1645 print_formatted (evaluate_expression (d->exp),
1646 d->format.size, &opts, gdb_stdout);
1647 printf_filtered ("\n");
1650 annotate_display_end ();
1652 gdb_flush (gdb_stdout);
1653 current_display_number = -1;
1656 /* Display all of the values on the auto-display chain which can be
1657 evaluated in the current scope. */
1664 for (d = display_chain; d; d = d->next)
1668 /* Delete the auto-display which we were in the process of displaying.
1669 This is done when there is an error or a signal. */
1672 disable_display (int num)
1676 for (d = display_chain; d; d = d->next)
1677 if (d->number == num)
1682 printf_unfiltered (_("No display number %d.\n"), num);
1686 disable_current_display (void)
1688 if (current_display_number >= 0)
1690 disable_display (current_display_number);
1691 fprintf_unfiltered (gdb_stderr, _("\
1692 Disabling display %d to avoid infinite recursion.\n"),
1693 current_display_number);
1695 current_display_number = -1;
1699 display_info (char *ignore, int from_tty)
1704 printf_unfiltered (_("There are no auto-display expressions now.\n"));
1706 printf_filtered (_("Auto-display expressions now in effect:\n\
1707 Num Enb Expression\n"));
1709 for (d = display_chain; d; d = d->next)
1711 printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]);
1713 printf_filtered ("/%d%c%c ", d->format.count, d->format.size,
1715 else if (d->format.format)
1716 printf_filtered ("/%c ", d->format.format);
1717 puts_filtered (d->exp_string);
1718 if (d->block && !contained_in (get_selected_block (0), d->block))
1719 printf_filtered (_(" (cannot be evaluated in the current context)"));
1720 printf_filtered ("\n");
1721 gdb_flush (gdb_stdout);
1726 enable_display (char *args, int from_tty)
1735 for (d = display_chain; d; d = d->next)
1742 while (*p1 >= '0' && *p1 <= '9')
1744 if (*p1 && *p1 != ' ' && *p1 != '\t')
1745 error (_("Arguments must be display numbers."));
1749 for (d = display_chain; d; d = d->next)
1750 if (d->number == num)
1755 printf_unfiltered (_("No display number %d.\n"), num);
1758 while (*p == ' ' || *p == '\t')
1764 disable_display_command (char *args, int from_tty)
1772 for (d = display_chain; d; d = d->next)
1779 while (*p1 >= '0' && *p1 <= '9')
1781 if (*p1 && *p1 != ' ' && *p1 != '\t')
1782 error (_("Arguments must be display numbers."));
1784 disable_display (atoi (p));
1787 while (*p == ' ' || *p == '\t')
1792 /* Return 1 if D uses SOLIB (and will become dangling when SOLIB
1793 is unloaded), otherwise return 0. */
1796 display_uses_solib_p (const struct display *d,
1797 const struct so_list *solib)
1800 struct expression *const exp = d->exp;
1801 const union exp_element *const elts = exp->elts;
1803 if (d->block != NULL
1804 && solib_contains_address_p (solib, d->block->startaddr))
1807 for (endpos = exp->nelts; endpos > 0; )
1809 int i, args, oplen = 0;
1811 exp->language_defn->la_exp_desc->operator_length (exp, endpos,
1813 gdb_assert (oplen > 0);
1816 if (elts[i].opcode == OP_VAR_VALUE)
1818 const struct block *const block = elts[i + 1].block;
1819 const struct symbol *const symbol = elts[i + 2].symbol;
1820 const struct obj_section *const section =
1821 SYMBOL_OBJ_SECTION (symbol);
1824 && solib_contains_address_p (solib, block->startaddr))
1827 if (section && section->objfile == solib->objfile)
1836 /* display_chain items point to blocks and expressions. Some expressions in
1837 turn may point to symbols.
1838 Both symbols and blocks are obstack_alloc'd on objfile_stack, and are
1839 obstack_free'd when a shared library is unloaded.
1840 Clear pointers that are about to become dangling.
1841 Both .exp and .block fields will be restored next time we need to display
1842 an item by re-parsing .exp_string field in the new execution context. */
1845 clear_dangling_display_expressions (struct so_list *solib)
1848 struct objfile *objfile = NULL;
1850 for (d = display_chain; d; d = d->next)
1852 if (d->exp && display_uses_solib_p (d, solib))
1862 /* Print the value in stack frame FRAME of a variable specified by a
1863 struct symbol. NAME is the name to print; if NULL then VAR's print
1864 name will be used. STREAM is the ui_file on which to print the
1865 value. INDENT specifies the number of indent levels to print
1866 before printing the variable name. */
1869 print_variable_and_value (const char *name, struct symbol *var,
1870 struct frame_info *frame,
1871 struct ui_file *stream, int indent)
1874 struct value_print_options opts;
1877 name = SYMBOL_PRINT_NAME (var);
1879 fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name);
1881 val = read_var_value (var, frame);
1882 get_user_print_options (&opts);
1883 common_val_print (val, stream, indent, &opts, current_language);
1884 fprintf_filtered (stream, "\n");
1888 printf_command (char *arg, int from_tty)
1892 char *string = NULL;
1893 struct value **val_args;
1895 char *current_substring;
1897 int allocated_args = 20;
1898 struct cleanup *old_cleanups;
1900 val_args = xmalloc (allocated_args * sizeof (struct value *));
1901 old_cleanups = make_cleanup (free_current_contents, &val_args);
1904 error_no_arg (_("format-control string and values to print"));
1906 /* Skip white space before format string */
1907 while (*s == ' ' || *s == '\t')
1910 /* A format string should follow, enveloped in double quotes. */
1912 error (_("Bad format string, missing '\"'."));
1914 /* Parse the format-control string and copy it into the string STRING,
1915 processing some kinds of escape sequence. */
1917 f = string = (char *) alloca (strlen (s) + 1);
1925 error (_("Bad format string, non-terminated '\"'."));
1958 /* ??? TODO: handle other escape sequences */
1959 error (_("Unrecognized escape character \\%c in format string."),
1969 /* Skip over " and following space and comma. */
1972 while (*s == ' ' || *s == '\t')
1975 if (*s != ',' && *s != 0)
1976 error (_("Invalid argument syntax"));
1980 while (*s == ' ' || *s == '\t')
1983 /* Need extra space for the '\0's. Doubling the size is sufficient. */
1984 substrings = alloca (strlen (string) * 2);
1985 current_substring = substrings;
1988 /* Now scan the string for %-specs and see what kinds of args they want.
1989 argclass[I] classifies the %-specs so we can give printf_filtered
1990 something of the right size. */
1994 int_arg, long_arg, long_long_arg, ptr_arg,
1995 string_arg, wide_string_arg, wide_char_arg,
1996 double_arg, long_double_arg, decfloat_arg
1998 enum argclass *argclass;
1999 enum argclass this_argclass;
2004 argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass);
2011 int seen_hash = 0, seen_zero = 0, lcount = 0, seen_prec = 0;
2012 int seen_space = 0, seen_plus = 0;
2013 int seen_big_l = 0, seen_h = 0, seen_big_h = 0;
2014 int seen_big_d = 0, seen_double_big_d = 0;
2017 /* Check the validity of the format specifier, and work
2018 out what argument it expects. We only accept C89
2019 format strings, with the exception of long long (which
2020 we autoconf for). */
2022 /* Skip over "%%". */
2029 /* The first part of a format specifier is a set of flag
2031 while (strchr ("0-+ #", *f))
2044 /* The next part of a format specifier is a width. */
2045 while (strchr ("0123456789", *f))
2048 /* The next part of a format specifier is a precision. */
2053 while (strchr ("0123456789", *f))
2057 /* The next part of a format specifier is a length modifier. */
2078 /* Decimal32 modifier. */
2084 /* Decimal64 and Decimal128 modifiers. */
2089 /* Check for a Decimal128. */
2093 seen_double_big_d = 1;
2109 if (seen_space || seen_plus)
2116 this_argclass = int_arg;
2117 else if (lcount == 1)
2118 this_argclass = long_arg;
2120 this_argclass = long_long_arg;
2127 this_argclass = lcount == 0 ? int_arg : wide_char_arg;
2128 if (lcount > 1 || seen_h || seen_big_l)
2130 if (seen_prec || seen_zero || seen_space || seen_plus)
2135 this_argclass = ptr_arg;
2136 if (lcount || seen_h || seen_big_l)
2138 if (seen_prec || seen_zero || seen_space || seen_plus)
2143 this_argclass = lcount == 0 ? string_arg : wide_string_arg;
2144 if (lcount > 1 || seen_h || seen_big_l)
2146 if (seen_zero || seen_space || seen_plus)
2155 if (seen_big_h || seen_big_d || seen_double_big_d)
2156 this_argclass = decfloat_arg;
2157 else if (seen_big_l)
2158 this_argclass = long_double_arg;
2160 this_argclass = double_arg;
2162 if (lcount || seen_h)
2167 error (_("`*' not supported for precision or width in printf"));
2170 error (_("Format specifier `n' not supported in printf"));
2173 error (_("Incomplete format specifier at end of format string"));
2176 error (_("Unrecognized format specifier '%c' in printf"), *f);
2180 error (_("Inappropriate modifiers to format specifier '%c' in printf"),
2185 if (lcount > 1 && USE_PRINTF_I64)
2187 /* Windows' printf does support long long, but not the usual way.
2188 Convert %lld to %I64d. */
2189 int length_before_ll = f - last_arg - 1 - lcount;
2190 strncpy (current_substring, last_arg, length_before_ll);
2191 strcpy (current_substring + length_before_ll, "I64");
2192 current_substring[length_before_ll + 3] =
2193 last_arg[length_before_ll + lcount];
2194 current_substring += length_before_ll + 4;
2196 else if (this_argclass == wide_string_arg
2197 || this_argclass == wide_char_arg)
2199 /* Convert %ls or %lc to %s. */
2200 int length_before_ls = f - last_arg - 2;
2201 strncpy (current_substring, last_arg, length_before_ls);
2202 strcpy (current_substring + length_before_ls, "s");
2203 current_substring += length_before_ls + 2;
2207 strncpy (current_substring, last_arg, f - last_arg);
2208 current_substring += f - last_arg;
2210 *current_substring++ = '\0';
2212 argclass[nargs_wanted++] = this_argclass;
2215 /* Now, parse all arguments and evaluate them.
2216 Store the VALUEs in VAL_ARGS. */
2221 if (nargs == allocated_args)
2222 val_args = (struct value **) xrealloc ((char *) val_args,
2223 (allocated_args *= 2)
2224 * sizeof (struct value *));
2226 val_args[nargs] = parse_to_comma_and_eval (&s1);
2234 if (nargs != nargs_wanted)
2235 error (_("Wrong number of arguments for specified format-string"));
2237 /* Now actually print them. */
2238 current_substring = substrings;
2239 for (i = 0; i < nargs; i++)
2241 switch (argclass[i])
2248 tem = value_as_address (val_args[i]);
2250 /* This is a %s argument. Find the length of the string. */
2255 read_memory (tem + j, &c, 1);
2260 /* Copy the string contents into a string inside GDB. */
2261 str = (gdb_byte *) alloca (j + 1);
2263 read_memory (tem, str, j);
2266 printf_filtered (current_substring, (char *) str);
2269 case wide_string_arg:
2274 struct type *wctype = lookup_typename (current_language,
2276 "wchar_t", NULL, 0);
2277 int wcwidth = TYPE_LENGTH (wctype);
2278 gdb_byte *buf = alloca (wcwidth);
2279 struct obstack output;
2280 struct cleanup *inner_cleanup;
2282 tem = value_as_address (val_args[i]);
2284 /* This is a %s argument. Find the length of the string. */
2285 for (j = 0;; j += wcwidth)
2288 read_memory (tem + j, buf, wcwidth);
2289 if (extract_unsigned_integer (buf, wcwidth) == 0)
2293 /* Copy the string contents into a string inside GDB. */
2294 str = (gdb_byte *) alloca (j + wcwidth);
2296 read_memory (tem, str, j);
2297 memset (&str[j], 0, wcwidth);
2299 obstack_init (&output);
2300 inner_cleanup = make_cleanup_obstack_free (&output);
2302 convert_between_encodings (target_wide_charset (),
2305 &output, translit_char);
2306 obstack_grow_str0 (&output, "");
2308 printf_filtered (current_substring, obstack_base (&output));
2309 do_cleanups (inner_cleanup);
2314 struct type *wctype = lookup_typename (current_language,
2316 "wchar_t", NULL, 0);
2317 struct type *valtype;
2318 struct obstack output;
2319 struct cleanup *inner_cleanup;
2320 const gdb_byte *bytes;
2322 valtype = value_type (val_args[i]);
2323 if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype)
2324 || TYPE_CODE (valtype) != TYPE_CODE_INT)
2325 error (_("expected wchar_t argument for %%lc"));
2327 bytes = value_contents (val_args[i]);
2329 obstack_init (&output);
2330 inner_cleanup = make_cleanup_obstack_free (&output);
2332 convert_between_encodings (target_wide_charset (),
2334 bytes, TYPE_LENGTH (valtype),
2335 TYPE_LENGTH (valtype),
2336 &output, translit_char);
2337 obstack_grow_str0 (&output, "");
2339 printf_filtered (current_substring, obstack_base (&output));
2340 do_cleanups (inner_cleanup);
2345 struct type *type = value_type (val_args[i]);
2349 /* If format string wants a float, unchecked-convert the value
2350 to floating point of the same size. */
2351 type = float_type_from_length (current_gdbarch, type);
2352 val = unpack_double (type, value_contents (val_args[i]), &inv);
2354 error (_("Invalid floating value found in program."));
2356 printf_filtered (current_substring, (double) val);
2359 case long_double_arg:
2360 #ifdef HAVE_LONG_DOUBLE
2362 struct type *type = value_type (val_args[i]);
2366 /* If format string wants a float, unchecked-convert the value
2367 to floating point of the same size. */
2368 type = float_type_from_length (current_gdbarch, type);
2369 val = unpack_double (type, value_contents (val_args[i]), &inv);
2371 error (_("Invalid floating value found in program."));
2373 printf_filtered (current_substring, (long double) val);
2377 error (_("long double not supported in printf"));
2380 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2382 long long val = value_as_long (val_args[i]);
2383 printf_filtered (current_substring, val);
2387 error (_("long long not supported in printf"));
2391 int val = value_as_long (val_args[i]);
2392 printf_filtered (current_substring, val);
2397 long val = value_as_long (val_args[i]);
2398 printf_filtered (current_substring, val);
2402 /* Handles decimal floating values. */
2405 const gdb_byte *param_ptr = value_contents (val_args[i]);
2406 #if defined (PRINTF_HAS_DECFLOAT)
2407 /* If we have native support for Decimal floating
2408 printing, handle it here. */
2409 printf_filtered (current_substring, param_ptr);
2412 /* As a workaround until vasprintf has native support for DFP
2413 we convert the DFP values to string and print them using
2414 the %s format specifier. */
2417 int nnull_chars = 0;
2419 /* Parameter data. */
2420 struct type *param_type = value_type (val_args[i]);
2421 unsigned int param_len = TYPE_LENGTH (param_type);
2423 /* DFP output data. */
2424 struct value *dfp_value = NULL;
2428 struct type *dfp_type = NULL;
2429 char decstr[MAX_DECIMAL_STRING];
2431 /* Points to the end of the string so that we can go back
2432 and check for DFP length modifiers. */
2433 eos = current_substring + strlen (current_substring);
2435 /* Look for the float/double format specifier. */
2436 while (*eos != 'f' && *eos != 'e' && *eos != 'E'
2437 && *eos != 'g' && *eos != 'G')
2442 /* Search for the '%' char and extract the size and type of
2443 the output decimal value based on its modifiers
2444 (%Hf, %Df, %DDf). */
2445 while (*--sos != '%')
2450 dfp_type = builtin_type (current_gdbarch)->builtin_decfloat;
2452 else if (*sos == 'D' && *(sos - 1) == 'D')
2455 dfp_type = builtin_type (current_gdbarch)->builtin_declong;
2461 dfp_type = builtin_type (current_gdbarch)->builtin_decdouble;
2465 /* Replace %Hf, %Df and %DDf with %s's. */
2468 /* Go through the whole format string and pull the correct
2469 number of chars back to compensate for the change in the
2470 format specifier. */
2471 while (nnull_chars < nargs - i)
2479 /* Conversion between different DFP types. */
2480 if (TYPE_CODE (param_type) == TYPE_CODE_DECFLOAT)
2481 decimal_convert (param_ptr, param_len, dec, dfp_len);
2483 /* If this is a non-trivial conversion, just output 0.
2484 A correct converted value can be displayed by explicitly
2485 casting to a DFP type. */
2486 decimal_from_string (dec, dfp_len, "0");
2488 dfp_value = value_from_decfloat (dfp_type, dec);
2490 dfp_ptr = (gdb_byte *) value_contents (dfp_value);
2492 decimal_to_string (dfp_ptr, dfp_len, decstr);
2494 /* Print the DFP value. */
2495 printf_filtered (current_substring, decstr);
2503 /* We avoid the host's %p because pointers are too
2504 likely to be the wrong size. The only interesting
2505 modifier for %p is a width; extract that, and then
2506 handle %p as glibc would: %#x or a literal "(nil)". */
2508 char *p, *fmt, *fmt_p;
2509 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2510 long long val = value_as_long (val_args[i]);
2512 long val = value_as_long (val_args[i]);
2515 fmt = alloca (strlen (current_substring) + 5);
2517 /* Copy up to the leading %. */
2518 p = current_substring;
2522 int is_percent = (*p == '%');
2536 /* Copy any width. */
2537 while (*p >= '0' && *p < '9')
2540 gdb_assert (*p == 'p' && *(p + 1) == '\0');
2543 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2549 printf_filtered (fmt, val);
2555 printf_filtered (fmt, "(nil)");
2561 internal_error (__FILE__, __LINE__,
2562 _("failed internal consistency check"));
2564 /* Skip to the next substring. */
2565 current_substring += strlen (current_substring) + 1;
2567 /* Print the portion of the format string after the last argument. */
2568 puts_filtered (last_arg);
2570 do_cleanups (old_cleanups);
2574 _initialize_printcmd (void)
2576 struct cmd_list_element *c;
2578 current_display_number = -1;
2580 observer_attach_solib_unloaded (clear_dangling_display_expressions);
2582 add_info ("address", address_info,
2583 _("Describe where symbol SYM is stored."));
2585 add_info ("symbol", sym_info, _("\
2586 Describe what symbol is at location ADDR.\n\
2587 Only for symbols with fixed locations (global or static scope)."));
2589 add_com ("x", class_vars, x_command, _("\
2590 Examine memory: x/FMT ADDRESS.\n\
2591 ADDRESS is an expression for the memory address to examine.\n\
2592 FMT is a repeat count followed by a format letter and a size letter.\n\
2593 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2594 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\
2595 Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2596 The specified number of objects of the specified size are printed\n\
2597 according to the format.\n\n\
2598 Defaults for format and size letters are those previously used.\n\
2599 Default count is 1. Default address is following last thing printed\n\
2600 with this command or \"print\"."));
2603 add_com ("whereis", class_vars, whereis_command,
2604 _("Print line number and file of definition of variable."));
2607 add_info ("display", display_info, _("\
2608 Expressions to display when program stops, with code numbers."));
2610 add_cmd ("undisplay", class_vars, undisplay_command, _("\
2611 Cancel some expressions to be displayed when program stops.\n\
2612 Arguments are the code numbers of the expressions to stop displaying.\n\
2613 No argument means cancel all automatic-display expressions.\n\
2614 \"delete display\" has the same effect as this command.\n\
2615 Do \"info display\" to see current list of code numbers."),
2618 add_com ("display", class_vars, display_command, _("\
2619 Print value of expression EXP each time the program stops.\n\
2620 /FMT may be used before EXP as in the \"print\" command.\n\
2621 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2622 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2623 and examining is done as in the \"x\" command.\n\n\
2624 With no argument, display all currently requested auto-display expressions.\n\
2625 Use \"undisplay\" to cancel display requests previously made."));
2627 add_cmd ("display", class_vars, enable_display, _("\
2628 Enable some expressions to be displayed when program stops.\n\
2629 Arguments are the code numbers of the expressions to resume displaying.\n\
2630 No argument means enable all automatic-display expressions.\n\
2631 Do \"info display\" to see current list of code numbers."), &enablelist);
2633 add_cmd ("display", class_vars, disable_display_command, _("\
2634 Disable some expressions to be displayed when program stops.\n\
2635 Arguments are the code numbers of the expressions to stop displaying.\n\
2636 No argument means disable all automatic-display expressions.\n\
2637 Do \"info display\" to see current list of code numbers."), &disablelist);
2639 add_cmd ("display", class_vars, undisplay_command, _("\
2640 Cancel some expressions to be displayed when program stops.\n\
2641 Arguments are the code numbers of the expressions to stop displaying.\n\
2642 No argument means cancel all automatic-display expressions.\n\
2643 Do \"info display\" to see current list of code numbers."), &deletelist);
2645 add_com ("printf", class_vars, printf_command, _("\
2646 printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2647 This is useful for formatted output in user-defined commands."));
2649 add_com ("output", class_vars, output_command, _("\
2650 Like \"print\" but don't put in value history and don't print newline.\n\
2651 This is useful in user-defined commands."));
2653 add_prefix_cmd ("set", class_vars, set_command, _("\
2654 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2655 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2656 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2657 with $), a register (a few standard names starting with $), or an actual\n\
2658 variable in the program being debugged. EXP is any valid expression.\n\
2659 Use \"set variable\" for variables with names identical to set subcommands.\n\
2661 With a subcommand, this command modifies parts of the gdb environment.\n\
2662 You can see these environment settings with the \"show\" command."),
2663 &setlist, "set ", 1, &cmdlist);
2665 add_com ("assign", class_vars, set_command, _("\
2666 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2667 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2668 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2669 with $), a register (a few standard names starting with $), or an actual\n\
2670 variable in the program being debugged. EXP is any valid expression.\n\
2671 Use \"set variable\" for variables with names identical to set subcommands.\n\
2672 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2673 You can see these environment settings with the \"show\" command."));
2675 /* "call" is the same as "set", but handy for dbx users to call fns. */
2676 c = add_com ("call", class_vars, call_command, _("\
2677 Call a function in the program.\n\
2678 The argument is the function name and arguments, in the notation of the\n\
2679 current working language. The result is printed and saved in the value\n\
2680 history, if it is not void."));
2681 set_cmd_completer (c, expression_completer);
2683 add_cmd ("variable", class_vars, set_command, _("\
2684 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2685 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2686 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2687 with $), a register (a few standard names starting with $), or an actual\n\
2688 variable in the program being debugged. EXP is any valid expression.\n\
2689 This may usually be abbreviated to simply \"set\"."),
2692 c = add_com ("print", class_vars, print_command, _("\
2693 Print value of expression EXP.\n\
2694 Variables accessible are those of the lexical environment of the selected\n\
2695 stack frame, plus all those whose scope is global or an entire file.\n\
2697 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2698 $$NUM refers to NUM'th value back from the last one.\n\
2699 Names starting with $ refer to registers (with the values they would have\n\
2700 if the program were to return to the stack frame now selected, restoring\n\
2701 all registers saved by frames farther in) or else to debugger\n\
2702 \"convenience\" variables (any such name not a known register).\n\
2703 Use assignment expressions to give values to convenience variables.\n\
2705 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2706 @ is a binary operator for treating consecutive data objects\n\
2707 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2708 element is FOO, whose second element is stored in the space following\n\
2709 where FOO is stored, etc. FOO must be an expression whose value\n\
2710 resides in memory.\n\
2712 EXP may be preceded with /FMT, where FMT is a format letter\n\
2713 but no count or size letter (see \"x\" command)."));
2714 set_cmd_completer (c, expression_completer);
2715 add_com_alias ("p", "print", class_vars, 1);
2717 c = add_com ("inspect", class_vars, inspect_command, _("\
2718 Same as \"print\" command, except that if you are running in the epoch\n\
2719 environment, the value is printed in its own window."));
2720 set_cmd_completer (c, expression_completer);
2722 add_setshow_uinteger_cmd ("max-symbolic-offset", no_class,
2723 &max_symbolic_offset, _("\
2724 Set the largest offset that will be printed in <symbol+1234> form."), _("\
2725 Show the largest offset that will be printed in <symbol+1234> form."), NULL,
2727 show_max_symbolic_offset,
2728 &setprintlist, &showprintlist);
2729 add_setshow_boolean_cmd ("symbol-filename", no_class,
2730 &print_symbol_filename, _("\
2731 Set printing of source filename and line number with <symbol>."), _("\
2732 Show printing of source filename and line number with <symbol>."), NULL,
2734 show_print_symbol_filename,
2735 &setprintlist, &showprintlist);
2737 /* For examine/instruction a single byte quantity is specified as
2738 the data. This avoids problems with value_at_lazy() requiring a
2739 valid data type (and rejecting VOID). */
2740 examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL);
2742 examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL);
2743 examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL);
2744 examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL);
2745 examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL);