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 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"
48 #include "tui/tui.h" /* For tui_active et.al. */
51 #if defined(__MINGW32__) && !defined(PRINTF_HAS_LONG_LONG)
52 # define USE_PRINTF_I64 1
53 # define PRINTF_HAS_LONG_LONG
55 # define USE_PRINTF_I64 0
58 extern int asm_demangle; /* Whether to demangle syms in asm printouts */
67 /* Last specified output format. */
69 static char last_format = 'x';
71 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
73 static char last_size = 'w';
75 /* Default address to examine next. */
77 static CORE_ADDR next_address;
79 /* Number of delay instructions following current disassembled insn. */
81 static int branch_delay_insns;
83 /* Last address examined. */
85 static CORE_ADDR last_examine_address;
87 /* Contents of last address examined.
88 This is not valid past the end of the `x' command! */
90 static struct value *last_examine_value;
92 /* Largest offset between a symbolic value and an address, that will be
93 printed as `0x1234 <symbol+offset>'. */
95 static unsigned int max_symbolic_offset = UINT_MAX;
97 show_max_symbolic_offset (struct ui_file *file, int from_tty,
98 struct cmd_list_element *c, const char *value)
100 fprintf_filtered (file, _("\
101 The largest offset that will be printed in <symbol+1234> form is %s.\n"),
105 /* Append the source filename and linenumber of the symbol when
106 printing a symbolic value as `<symbol at filename:linenum>' if set. */
107 static int print_symbol_filename = 0;
109 show_print_symbol_filename (struct ui_file *file, int from_tty,
110 struct cmd_list_element *c, const char *value)
112 fprintf_filtered (file, _("\
113 Printing of source filename and line number with <symbol> is %s.\n"),
117 /* Number of auto-display expression currently being displayed.
118 So that we can disable it if we get an error or a signal within it.
119 -1 when not doing one. */
121 int current_display_number;
125 /* Chain link to next auto-display item. */
126 struct display *next;
127 /* Expression to be evaluated and displayed. */
128 struct expression *exp;
129 /* Item number of this auto-display item. */
131 /* Display format specified. */
132 struct format_data format;
133 /* Innermost block required by this expression when evaluated */
135 /* Status of this display (enabled or disabled) */
139 /* Chain of expressions whose values should be displayed
140 automatically each time the program stops. */
142 static struct display *display_chain;
144 static int display_number;
146 /* Prototypes for exported functions. */
148 void output_command (char *, int);
150 void _initialize_printcmd (void);
152 /* Prototypes for local functions. */
154 static void do_one_display (struct display *);
157 /* Decode a format specification. *STRING_PTR should point to it.
158 OFORMAT and OSIZE are used as defaults for the format and size
159 if none are given in the format specification.
160 If OSIZE is zero, then the size field of the returned value
161 should be set only if a size is explicitly specified by the
163 The structure returned describes all the data
164 found in the specification. In addition, *STRING_PTR is advanced
165 past the specification and past all whitespace following it. */
167 static struct format_data
168 decode_format (char **string_ptr, int oformat, int osize)
170 struct format_data val;
171 char *p = *string_ptr;
177 if (*p >= '0' && *p <= '9')
178 val.count = atoi (p);
179 while (*p >= '0' && *p <= '9')
182 /* Now process size or format letters that follow. */
186 if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g')
188 else if (*p >= 'a' && *p <= 'z')
194 while (*p == ' ' || *p == '\t')
198 /* Set defaults for format and size if not specified. */
199 if (val.format == '?')
203 /* Neither has been specified. */
204 val.format = oformat;
208 /* If a size is specified, any format makes a reasonable
209 default except 'i'. */
210 val.format = oformat == 'i' ? 'x' : oformat;
212 else if (val.size == '?')
217 /* Pick the appropriate size for an address. */
218 if (gdbarch_ptr_bit (current_gdbarch) == 64)
219 val.size = osize ? 'g' : osize;
220 else if (gdbarch_ptr_bit (current_gdbarch) == 32)
221 val.size = osize ? 'w' : osize;
222 else if (gdbarch_ptr_bit (current_gdbarch) == 16)
223 val.size = osize ? 'h' : osize;
225 /* Bad value for gdbarch_ptr_bit. */
226 internal_error (__FILE__, __LINE__,
227 _("failed internal consistency check"));
230 /* Floating point has to be word or giantword. */
231 if (osize == 'w' || osize == 'g')
234 /* Default it to giantword if the last used size is not
236 val.size = osize ? 'g' : osize;
239 /* Characters default to one byte. */
240 val.size = osize ? 'b' : osize;
243 /* The default is the size most recently specified. */
250 /* Print value VAL on stream according to OPTIONS.
251 Do not end with a newline.
252 SIZE is the letter for the size of datum being printed.
253 This is used to pad hex numbers so they line up. SIZE is 0
254 for print / output and set for examine. */
257 print_formatted (struct value *val, int size,
258 const struct value_print_options *options,
259 struct ui_file *stream)
261 struct type *type = check_typedef (value_type (val));
262 int len = TYPE_LENGTH (type);
264 if (VALUE_LVAL (val) == lval_memory)
265 next_address = VALUE_ADDRESS (val) + len;
269 switch (options->format)
272 /* FIXME: Need to handle wchar_t's here... */
273 next_address = VALUE_ADDRESS (val)
274 + val_print_string (VALUE_ADDRESS (val), -1, 1, stream,
279 /* We often wrap here if there are long symbolic names. */
281 next_address = (VALUE_ADDRESS (val)
282 + gdb_print_insn (VALUE_ADDRESS (val), stream,
283 &branch_delay_insns));
288 if (options->format == 0 || options->format == 's'
289 || TYPE_CODE (type) == TYPE_CODE_REF
290 || TYPE_CODE (type) == TYPE_CODE_ARRAY
291 || TYPE_CODE (type) == TYPE_CODE_STRING
292 || TYPE_CODE (type) == TYPE_CODE_STRUCT
293 || TYPE_CODE (type) == TYPE_CODE_UNION
294 || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
295 value_print (val, stream, options);
297 /* User specified format, so don't look to the the type to
298 tell us what to do. */
299 print_scalar_formatted (value_contents (val), type,
300 options, size, stream);
303 /* Return builtin floating point type of same length as TYPE.
304 If no such type is found, return TYPE itself. */
306 float_type_from_length (struct gdbarch *gdbarch, struct type *type)
308 const struct builtin_type *builtin = builtin_type (gdbarch);
309 unsigned int len = TYPE_LENGTH (type);
311 if (len == TYPE_LENGTH (builtin->builtin_float))
312 type = builtin->builtin_float;
313 else if (len == TYPE_LENGTH (builtin->builtin_double))
314 type = builtin->builtin_double;
315 else if (len == TYPE_LENGTH (builtin->builtin_long_double))
316 type = builtin->builtin_long_double;
321 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
322 according to OPTIONS and SIZE on STREAM.
323 Formats s and i are not supported at this level.
325 This is how the elements of an array or structure are printed
329 print_scalar_formatted (const void *valaddr, struct type *type,
330 const struct value_print_options *options,
331 int size, struct ui_file *stream)
333 LONGEST val_long = 0;
334 unsigned int len = TYPE_LENGTH (type);
335 enum bfd_endian byte_order = gdbarch_byte_order (current_gdbarch);
337 /* If we get here with a string format, try again without it. Go
338 all the way back to the language printers, which may call us
340 if (options->format == 's')
342 struct value_print_options opts = *options;
345 val_print (type, valaddr, 0, 0, stream, 0, &opts,
350 if (len > sizeof(LONGEST) &&
351 (TYPE_CODE (type) == TYPE_CODE_INT
352 || TYPE_CODE (type) == TYPE_CODE_ENUM))
354 switch (options->format)
357 print_octal_chars (stream, valaddr, len, byte_order);
361 print_decimal_chars (stream, valaddr, len, byte_order);
364 print_binary_chars (stream, valaddr, len, byte_order);
367 print_hex_chars (stream, valaddr, len, byte_order);
370 print_char_chars (stream, valaddr, len, byte_order);
377 if (options->format != 'f')
378 val_long = unpack_long (type, valaddr);
380 /* If the value is a pointer, and pointers and addresses are not the
381 same, then at this point, the value's length (in target bytes) is
382 gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
383 if (TYPE_CODE (type) == TYPE_CODE_PTR)
384 len = gdbarch_addr_bit (current_gdbarch) / TARGET_CHAR_BIT;
386 /* If we are printing it as unsigned, truncate it in case it is actually
387 a negative signed value (e.g. "print/u (short)-1" should print 65535
388 (if shorts are 16 bits) instead of 4294967295). */
389 if (options->format != 'd')
391 if (len < sizeof (LONGEST))
392 val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1;
395 switch (options->format)
400 /* No size specified, like in print. Print varying # of digits. */
401 print_longest (stream, 'x', 1, val_long);
410 print_longest (stream, size, 1, val_long);
413 error (_("Undefined output size \"%c\"."), size);
418 print_longest (stream, 'd', 1, val_long);
422 print_longest (stream, 'u', 0, val_long);
427 print_longest (stream, 'o', 1, val_long);
429 fprintf_filtered (stream, "0");
434 CORE_ADDR addr = unpack_pointer (type, valaddr);
435 print_address (addr, stream);
441 struct value_print_options opts = *options;
443 if (TYPE_UNSIGNED (type))
444 value_print (value_from_longest (builtin_type_true_unsigned_char,
448 value_print (value_from_longest (builtin_type_true_char, val_long),
454 type = float_type_from_length (current_gdbarch, type);
455 print_floating (valaddr, type, stream);
459 internal_error (__FILE__, __LINE__,
460 _("failed internal consistency check"));
463 /* Binary; 't' stands for "two". */
465 char bits[8 * (sizeof val_long) + 1];
466 char buf[8 * (sizeof val_long) + 32];
471 width = 8 * (sizeof val_long);
488 error (_("Undefined output size \"%c\"."), size);
494 bits[width] = (val_long & 1) ? '1' : '0';
499 while (*cp && *cp == '0')
505 fputs_filtered (buf, stream);
510 error (_("Undefined output format \"%c\"."), options->format);
514 /* Specify default address for `x' command.
515 The `info lines' command uses this. */
518 set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr)
520 struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
524 /* Make address available to the user as $_. */
525 set_internalvar (lookup_internalvar ("_"),
526 value_from_pointer (ptr_type, addr));
529 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
530 after LEADIN. Print nothing if no symbolic name is found nearby.
531 Optionally also print source file and line number, if available.
532 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
533 or to interpret it as a possible C++ name and convert it back to source
534 form. However note that DO_DEMANGLE can be overridden by the specific
535 settings of the demangle and asm_demangle variables. */
538 print_address_symbolic (CORE_ADDR addr, struct ui_file *stream,
539 int do_demangle, char *leadin)
542 char *filename = NULL;
547 /* Throw away both name and filename. */
548 struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name);
549 make_cleanup (free_current_contents, &filename);
551 if (build_address_symbolic (addr, do_demangle, &name, &offset,
552 &filename, &line, &unmapped))
554 do_cleanups (cleanup_chain);
558 fputs_filtered (leadin, stream);
560 fputs_filtered ("<*", stream);
562 fputs_filtered ("<", stream);
563 fputs_filtered (name, stream);
565 fprintf_filtered (stream, "+%u", (unsigned int) offset);
567 /* Append source filename and line number if desired. Give specific
568 line # of this addr, if we have it; else line # of the nearest symbol. */
569 if (print_symbol_filename && filename != NULL)
572 fprintf_filtered (stream, " at %s:%d", filename, line);
574 fprintf_filtered (stream, " in %s", filename);
577 fputs_filtered ("*>", stream);
579 fputs_filtered (">", stream);
581 do_cleanups (cleanup_chain);
584 /* Given an address ADDR return all the elements needed to print the
585 address in a symbolic form. NAME can be mangled or not depending
586 on DO_DEMANGLE (and also on the asm_demangle global variable,
587 manipulated via ''set print asm-demangle''). Return 0 in case of
588 success, when all the info in the OUT paramters is valid. Return 1
591 build_address_symbolic (CORE_ADDR addr, /* IN */
592 int do_demangle, /* IN */
593 char **name, /* OUT */
594 int *offset, /* OUT */
595 char **filename, /* OUT */
597 int *unmapped) /* OUT */
599 struct minimal_symbol *msymbol;
600 struct symbol *symbol;
601 CORE_ADDR name_location = 0;
602 struct obj_section *section = NULL;
603 char *name_temp = "";
605 /* Let's say it is unmapped. */
608 /* Determine if the address is in an overlay, and whether it is
610 if (overlay_debugging)
612 section = find_pc_overlay (addr);
613 if (pc_in_unmapped_range (addr, section))
616 addr = overlay_mapped_address (addr, section);
620 /* First try to find the address in the symbol table, then
621 in the minsyms. Take the closest one. */
623 /* This is defective in the sense that it only finds text symbols. So
624 really this is kind of pointless--we should make sure that the
625 minimal symbols have everything we need (by changing that we could
626 save some memory, but for many debug format--ELF/DWARF or
627 anything/stabs--it would be inconvenient to eliminate those minimal
629 msymbol = lookup_minimal_symbol_by_pc_section (addr, section);
630 symbol = find_pc_sect_function (addr, section);
634 name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol));
635 if (do_demangle || asm_demangle)
636 name_temp = SYMBOL_PRINT_NAME (symbol);
638 name_temp = SYMBOL_LINKAGE_NAME (symbol);
643 if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL)
645 /* The msymbol is closer to the address than the symbol;
646 use the msymbol instead. */
648 name_location = SYMBOL_VALUE_ADDRESS (msymbol);
649 if (do_demangle || asm_demangle)
650 name_temp = SYMBOL_PRINT_NAME (msymbol);
652 name_temp = SYMBOL_LINKAGE_NAME (msymbol);
655 if (symbol == NULL && msymbol == NULL)
658 /* If the nearest symbol is too far away, don't print anything symbolic. */
660 /* For when CORE_ADDR is larger than unsigned int, we do math in
661 CORE_ADDR. But when we detect unsigned wraparound in the
662 CORE_ADDR math, we ignore this test and print the offset,
663 because addr+max_symbolic_offset has wrapped through the end
664 of the address space back to the beginning, giving bogus comparison. */
665 if (addr > name_location + max_symbolic_offset
666 && name_location + max_symbolic_offset > name_location)
669 *offset = addr - name_location;
671 *name = xstrdup (name_temp);
673 if (print_symbol_filename)
675 struct symtab_and_line sal;
677 sal = find_pc_sect_line (addr, section, 0);
681 *filename = xstrdup (sal.symtab->filename);
689 /* Print address ADDR symbolically on STREAM.
690 First print it as a number. Then perhaps print
691 <SYMBOL + OFFSET> after the number. */
694 print_address (CORE_ADDR addr, struct ui_file *stream)
696 fputs_filtered (paddress (addr), stream);
697 print_address_symbolic (addr, stream, asm_demangle, " ");
700 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
701 controls whether to print the symbolic name "raw" or demangled.
702 Global setting "addressprint" controls whether to print hex address
706 print_address_demangle (CORE_ADDR addr, struct ui_file *stream,
709 struct value_print_options opts;
710 get_user_print_options (&opts);
713 fprintf_filtered (stream, "0");
715 else if (opts.addressprint)
717 fputs_filtered (paddress (addr), stream);
718 print_address_symbolic (addr, stream, do_demangle, " ");
722 print_address_symbolic (addr, stream, do_demangle, "");
727 /* These are the types that $__ will get after an examine command of one
730 static struct type *examine_i_type;
732 static struct type *examine_b_type;
733 static struct type *examine_h_type;
734 static struct type *examine_w_type;
735 static struct type *examine_g_type;
737 /* Examine data at address ADDR in format FMT.
738 Fetch it from memory and print on gdb_stdout. */
741 do_examine (struct format_data fmt, CORE_ADDR addr)
746 struct type *val_type = NULL;
749 struct value_print_options opts;
756 /* String or instruction format implies fetch single bytes
757 regardless of the specified size. */
758 if (format == 's' || format == 'i')
762 val_type = examine_i_type;
763 else if (size == 'b')
764 val_type = examine_b_type;
765 else if (size == 'h')
766 val_type = examine_h_type;
767 else if (size == 'w')
768 val_type = examine_w_type;
769 else if (size == 'g')
770 val_type = examine_g_type;
777 if (format == 's' || format == 'i')
780 get_formatted_print_options (&opts, format);
782 /* Print as many objects as specified in COUNT, at most maxelts per line,
783 with the address of the next one at the start of each line. */
788 print_address (next_address, gdb_stdout);
789 printf_filtered (":");
794 printf_filtered ("\t");
795 /* Note that print_formatted sets next_address for the next
797 last_examine_address = next_address;
799 if (last_examine_value)
800 value_free (last_examine_value);
802 /* The value to be displayed is not fetched greedily.
803 Instead, to avoid the possibility of a fetched value not
804 being used, its retrieval is delayed until the print code
805 uses it. When examining an instruction stream, the
806 disassembler will perform its own memory fetch using just
807 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
808 the disassembler be modified so that LAST_EXAMINE_VALUE
809 is left with the byte sequence from the last complete
810 instruction fetched from memory? */
811 last_examine_value = value_at_lazy (val_type, next_address);
813 if (last_examine_value)
814 release_value (last_examine_value);
816 print_formatted (last_examine_value, size, &opts, gdb_stdout);
818 /* Display any branch delay slots following the final insn. */
819 if (format == 'i' && count == 1)
820 count += branch_delay_insns;
822 printf_filtered ("\n");
823 gdb_flush (gdb_stdout);
828 validate_format (struct format_data fmt, char *cmdname)
831 error (_("Size letters are meaningless in \"%s\" command."), cmdname);
833 error (_("Item count other than 1 is meaningless in \"%s\" command."),
835 if (fmt.format == 'i')
836 error (_("Format letter \"%c\" is meaningless in \"%s\" command."),
837 fmt.format, cmdname);
840 /* Evaluate string EXP as an expression in the current language and
841 print the resulting value. EXP may contain a format specifier as the
842 first argument ("/x myvar" for example, to print myvar in hex). */
845 print_command_1 (char *exp, int inspect, int voidprint)
847 struct expression *expr;
848 struct cleanup *old_chain = 0;
851 struct format_data fmt;
854 if (exp && *exp == '/')
857 fmt = decode_format (&exp, last_format, 0);
858 validate_format (fmt, "print");
859 last_format = format = fmt.format;
871 expr = parse_expression (exp);
872 old_chain = make_cleanup (free_current_contents, &expr);
874 val = evaluate_expression (expr);
877 val = access_value_history (0);
879 if (voidprint || (val && value_type (val) &&
880 TYPE_CODE (value_type (val)) != TYPE_CODE_VOID))
882 struct value_print_options opts;
883 int histindex = record_latest_value (val);
886 annotate_value_history_begin (histindex, value_type (val));
888 annotate_value_begin (value_type (val));
891 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"",
893 else if (histindex >= 0)
894 printf_filtered ("$%d = ", histindex);
897 annotate_value_history_value ();
899 get_formatted_print_options (&opts, format);
900 opts.inspect_it = inspect;
902 print_formatted (val, fmt.size, &opts, gdb_stdout);
903 printf_filtered ("\n");
906 annotate_value_history_end ();
908 annotate_value_end ();
911 printf_unfiltered ("\") )\030");
915 do_cleanups (old_chain);
919 print_command (char *exp, int from_tty)
921 print_command_1 (exp, 0, 1);
924 /* Same as print, except in epoch, it gets its own window. */
926 inspect_command (char *exp, int from_tty)
928 extern int epoch_interface;
930 print_command_1 (exp, epoch_interface, 1);
933 /* Same as print, except it doesn't print void results. */
935 call_command (char *exp, int from_tty)
937 print_command_1 (exp, 0, 0);
941 output_command (char *exp, int from_tty)
943 struct expression *expr;
944 struct cleanup *old_chain;
947 struct format_data fmt;
948 struct value_print_options opts;
952 if (exp && *exp == '/')
955 fmt = decode_format (&exp, 0, 0);
956 validate_format (fmt, "output");
960 expr = parse_expression (exp);
961 old_chain = make_cleanup (free_current_contents, &expr);
963 val = evaluate_expression (expr);
965 annotate_value_begin (value_type (val));
967 get_formatted_print_options (&opts, format);
968 print_formatted (val, fmt.size, &opts, gdb_stdout);
970 annotate_value_end ();
973 gdb_flush (gdb_stdout);
975 do_cleanups (old_chain);
979 set_command (char *exp, int from_tty)
981 struct expression *expr = parse_expression (exp);
982 struct cleanup *old_chain =
983 make_cleanup (free_current_contents, &expr);
984 evaluate_expression (expr);
985 do_cleanups (old_chain);
989 sym_info (char *arg, int from_tty)
991 struct minimal_symbol *msymbol;
992 struct objfile *objfile;
993 struct obj_section *osect;
994 CORE_ADDR addr, sect_addr;
999 error_no_arg (_("address"));
1001 addr = parse_and_eval_address (arg);
1002 ALL_OBJSECTIONS (objfile, osect)
1004 /* Only process each object file once, even if there's a separate
1006 if (objfile->separate_debug_objfile_backlink)
1009 sect_addr = overlay_mapped_address (addr, osect);
1011 if (obj_section_addr (osect) <= sect_addr
1012 && sect_addr < obj_section_endaddr (osect)
1013 && (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, osect)))
1015 const char *obj_name, *mapped, *sec_name, *msym_name;
1017 struct cleanup *old_chain;
1020 offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol);
1021 mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped");
1022 sec_name = osect->the_bfd_section->name;
1023 msym_name = SYMBOL_PRINT_NAME (msymbol);
1025 /* Don't print the offset if it is zero.
1026 We assume there's no need to handle i18n of "sym + offset". */
1028 xasprintf (&loc_string, "%s + %u", msym_name, offset);
1030 xasprintf (&loc_string, "%s", msym_name);
1032 /* Use a cleanup to free loc_string in case the user quits
1033 a pagination request inside printf_filtered. */
1034 old_chain = make_cleanup (xfree, loc_string);
1036 gdb_assert (osect->objfile && osect->objfile->name);
1037 obj_name = osect->objfile->name;
1039 if (MULTI_OBJFILE_P ())
1040 if (pc_in_unmapped_range (addr, osect))
1041 if (section_is_overlay (osect))
1042 printf_filtered (_("%s in load address range of "
1043 "%s overlay section %s of %s\n"),
1044 loc_string, mapped, sec_name, obj_name);
1046 printf_filtered (_("%s in load address range of "
1047 "section %s of %s\n"),
1048 loc_string, sec_name, obj_name);
1050 if (section_is_overlay (osect))
1051 printf_filtered (_("%s in %s overlay section %s of %s\n"),
1052 loc_string, mapped, sec_name, obj_name);
1054 printf_filtered (_("%s in section %s of %s\n"),
1055 loc_string, sec_name, obj_name);
1057 if (pc_in_unmapped_range (addr, osect))
1058 if (section_is_overlay (osect))
1059 printf_filtered (_("%s in load address range of %s overlay "
1061 loc_string, mapped, sec_name);
1063 printf_filtered (_("%s in load address range of section %s\n"),
1064 loc_string, sec_name);
1066 if (section_is_overlay (osect))
1067 printf_filtered (_("%s in %s overlay section %s\n"),
1068 loc_string, mapped, sec_name);
1070 printf_filtered (_("%s in section %s\n"),
1071 loc_string, sec_name);
1073 do_cleanups (old_chain);
1077 printf_filtered (_("No symbol matches %s.\n"), arg);
1081 address_info (char *exp, int from_tty)
1084 struct minimal_symbol *msymbol;
1086 struct obj_section *section;
1087 CORE_ADDR load_addr;
1088 int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero
1089 if exp is a field of `this'. */
1092 error (_("Argument required."));
1094 sym = lookup_symbol (exp, get_selected_block (0), VAR_DOMAIN,
1095 &is_a_field_of_this);
1098 if (is_a_field_of_this)
1100 printf_filtered ("Symbol \"");
1101 fprintf_symbol_filtered (gdb_stdout, exp,
1102 current_language->la_language, DMGL_ANSI);
1103 printf_filtered ("\" is a field of the local class variable ");
1104 if (current_language->la_language == language_objc)
1105 printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
1107 printf_filtered ("`this'\n");
1111 msymbol = lookup_minimal_symbol (exp, NULL, NULL);
1113 if (msymbol != NULL)
1115 load_addr = SYMBOL_VALUE_ADDRESS (msymbol);
1117 printf_filtered ("Symbol \"");
1118 fprintf_symbol_filtered (gdb_stdout, exp,
1119 current_language->la_language, DMGL_ANSI);
1120 printf_filtered ("\" is at ");
1121 fputs_filtered (paddress (load_addr), gdb_stdout);
1122 printf_filtered (" in a file compiled without debugging");
1123 section = SYMBOL_OBJ_SECTION (msymbol);
1124 if (section_is_overlay (section))
1126 load_addr = overlay_unmapped_address (load_addr, section);
1127 printf_filtered (",\n -- loaded at ");
1128 fputs_filtered (paddress (load_addr), gdb_stdout);
1129 printf_filtered (" in overlay section %s",
1130 section->the_bfd_section->name);
1132 printf_filtered (".\n");
1135 error (_("No symbol \"%s\" in current context."), exp);
1139 printf_filtered ("Symbol \"");
1140 fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym),
1141 current_language->la_language, DMGL_ANSI);
1142 printf_filtered ("\" is ");
1143 val = SYMBOL_VALUE (sym);
1144 section = SYMBOL_OBJ_SECTION (sym);
1146 switch (SYMBOL_CLASS (sym))
1149 case LOC_CONST_BYTES:
1150 printf_filtered ("constant");
1154 printf_filtered ("a label at address ");
1155 fputs_filtered (paddress (load_addr = SYMBOL_VALUE_ADDRESS (sym)),
1157 if (section_is_overlay (section))
1159 load_addr = overlay_unmapped_address (load_addr, section);
1160 printf_filtered (",\n -- loaded at ");
1161 fputs_filtered (paddress (load_addr), gdb_stdout);
1162 printf_filtered (" in overlay section %s",
1163 section->the_bfd_section->name);
1168 /* FIXME: cagney/2004-01-26: It should be possible to
1169 unconditionally call the SYMBOL_OPS method when available.
1170 Unfortunately DWARF 2 stores the frame-base (instead of the
1171 function) location in a function's symbol. Oops! For the
1172 moment enable this when/where applicable. */
1173 SYMBOL_OPS (sym)->describe_location (sym, gdb_stdout);
1177 if (SYMBOL_IS_ARGUMENT (sym))
1178 printf_filtered (_("an argument in register %s"),
1179 gdbarch_register_name (current_gdbarch, val));
1181 printf_filtered (_("a variable in register %s"),
1182 gdbarch_register_name (current_gdbarch, val));
1186 printf_filtered (_("static storage at address "));
1187 fputs_filtered (paddress (load_addr = SYMBOL_VALUE_ADDRESS (sym)),
1189 if (section_is_overlay (section))
1191 load_addr = overlay_unmapped_address (load_addr, section);
1192 printf_filtered (_(",\n -- loaded at "));
1193 fputs_filtered (paddress (load_addr), gdb_stdout);
1194 printf_filtered (_(" in overlay section %s"),
1195 section->the_bfd_section->name);
1199 case LOC_REGPARM_ADDR:
1200 printf_filtered (_("address of an argument in register %s"),
1201 gdbarch_register_name (current_gdbarch, val));
1205 printf_filtered (_("an argument at offset %ld"), val);
1209 printf_filtered (_("a local variable at frame offset %ld"), val);
1213 printf_filtered (_("a reference argument at offset %ld"), val);
1217 printf_filtered (_("a typedef"));
1221 printf_filtered (_("a function at address "));
1222 load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
1223 fputs_filtered (paddress (load_addr), gdb_stdout);
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_UNRESOLVED:
1236 struct minimal_symbol *msym;
1238 msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), NULL, NULL);
1240 printf_filtered ("unresolved");
1243 section = SYMBOL_OBJ_SECTION (msym);
1244 load_addr = SYMBOL_VALUE_ADDRESS (msym);
1247 && (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0)
1248 printf_filtered (_("a thread-local variable at offset %s "
1249 "in the thread-local storage for `%s'"),
1250 paddr_nz (load_addr), section->objfile->name);
1253 printf_filtered (_("static storage at address "));
1254 fputs_filtered (paddress (load_addr), gdb_stdout);
1255 if (section_is_overlay (section))
1257 load_addr = overlay_unmapped_address (load_addr, section);
1258 printf_filtered (_(",\n -- loaded at "));
1259 fputs_filtered (paddress (load_addr), gdb_stdout);
1260 printf_filtered (_(" in overlay section %s"),
1261 section->the_bfd_section->name);
1268 case LOC_OPTIMIZED_OUT:
1269 printf_filtered (_("optimized out"));
1273 printf_filtered (_("of unknown (botched) type"));
1276 printf_filtered (".\n");
1281 x_command (char *exp, int from_tty)
1283 struct expression *expr;
1284 struct format_data fmt;
1285 struct cleanup *old_chain;
1288 fmt.format = last_format;
1289 fmt.size = last_size;
1292 if (exp && *exp == '/')
1295 fmt = decode_format (&exp, last_format, last_size);
1298 /* If we have an expression, evaluate it and use it as the address. */
1300 if (exp != 0 && *exp != 0)
1302 expr = parse_expression (exp);
1303 /* Cause expression not to be there any more if this command is
1304 repeated with Newline. But don't clobber a user-defined
1305 command's definition. */
1308 old_chain = make_cleanup (free_current_contents, &expr);
1309 val = evaluate_expression (expr);
1310 if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF)
1311 val = value_ind (val);
1312 /* In rvalue contexts, such as this, functions are coerced into
1313 pointers to functions. This makes "x/i main" work. */
1314 if (/* last_format == 'i' && */
1315 TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC
1316 && VALUE_LVAL (val) == lval_memory)
1317 next_address = VALUE_ADDRESS (val);
1319 next_address = value_as_address (val);
1320 do_cleanups (old_chain);
1323 do_examine (fmt, next_address);
1325 /* If the examine succeeds, we remember its size and format for next
1327 last_size = fmt.size;
1328 last_format = fmt.format;
1330 /* Set a couple of internal variables if appropriate. */
1331 if (last_examine_value)
1333 /* Make last address examined available to the user as $_. Use
1334 the correct pointer type. */
1335 struct type *pointer_type
1336 = lookup_pointer_type (value_type (last_examine_value));
1337 set_internalvar (lookup_internalvar ("_"),
1338 value_from_pointer (pointer_type,
1339 last_examine_address));
1341 /* Make contents of last address examined available to the user
1342 as $__. If the last value has not been fetched from memory
1343 then don't fetch it now; instead mark it by voiding the $__
1345 if (value_lazy (last_examine_value))
1346 set_internalvar (lookup_internalvar ("__"),
1347 allocate_value (builtin_type_void));
1349 set_internalvar (lookup_internalvar ("__"), last_examine_value);
1354 /* Add an expression to the auto-display chain.
1355 Specify the expression. */
1358 display_command (char *exp, int from_tty)
1360 struct format_data fmt;
1361 struct expression *expr;
1362 struct display *new;
1366 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1368 if (tui_active && exp != NULL && *exp == '$')
1369 display_it = (tui_set_layout_for_display_command (exp) == TUI_FAILURE);
1383 fmt = decode_format (&exp, 0, 0);
1384 if (fmt.size && fmt.format == 0)
1386 if (fmt.format == 'i' || fmt.format == 's')
1396 innermost_block = 0;
1397 expr = parse_expression (exp);
1399 new = (struct display *) xmalloc (sizeof (struct display));
1402 new->block = innermost_block;
1403 new->next = display_chain;
1404 new->number = ++display_number;
1407 display_chain = new;
1409 if (from_tty && target_has_execution)
1410 do_one_display (new);
1417 free_display (struct display *d)
1423 /* Clear out the display_chain. Done when new symtabs are loaded,
1424 since this invalidates the types stored in many expressions. */
1427 clear_displays (void)
1431 while ((d = display_chain) != NULL)
1434 display_chain = d->next;
1439 /* Delete the auto-display number NUM. */
1442 delete_display (int num)
1444 struct display *d1, *d;
1447 error (_("No display number %d."), num);
1449 if (display_chain->number == num)
1452 display_chain = d1->next;
1456 for (d = display_chain;; d = d->next)
1459 error (_("No display number %d."), num);
1460 if (d->next->number == num)
1470 /* Delete some values from the auto-display chain.
1471 Specify the element numbers. */
1474 undisplay_command (char *args, int from_tty)
1482 if (query ("Delete all auto-display expressions? "))
1491 while (*p1 >= '0' && *p1 <= '9')
1493 if (*p1 && *p1 != ' ' && *p1 != '\t')
1494 error (_("Arguments must be display numbers."));
1498 delete_display (num);
1501 while (*p == ' ' || *p == '\t')
1507 /* Display a single auto-display.
1508 Do nothing if the display cannot be printed in the current context,
1509 or if the display is disabled. */
1512 do_one_display (struct display *d)
1514 int within_current_scope;
1516 if (d->enabled_p == 0)
1520 within_current_scope = contained_in (get_selected_block (0), d->block);
1522 within_current_scope = 1;
1523 if (!within_current_scope)
1526 current_display_number = d->number;
1528 annotate_display_begin ();
1529 printf_filtered ("%d", d->number);
1530 annotate_display_number_end ();
1531 printf_filtered (": ");
1537 annotate_display_format ();
1539 printf_filtered ("x/");
1540 if (d->format.count != 1)
1541 printf_filtered ("%d", d->format.count);
1542 printf_filtered ("%c", d->format.format);
1543 if (d->format.format != 'i' && d->format.format != 's')
1544 printf_filtered ("%c", d->format.size);
1545 printf_filtered (" ");
1547 annotate_display_expression ();
1549 print_expression (d->exp, gdb_stdout);
1550 annotate_display_expression_end ();
1552 if (d->format.count != 1 || d->format.format == 'i')
1553 printf_filtered ("\n");
1555 printf_filtered (" ");
1557 val = evaluate_expression (d->exp);
1558 addr = value_as_address (val);
1559 if (d->format.format == 'i')
1560 addr = gdbarch_addr_bits_remove (current_gdbarch, addr);
1562 annotate_display_value ();
1564 do_examine (d->format, addr);
1568 struct value_print_options opts;
1570 annotate_display_format ();
1572 if (d->format.format)
1573 printf_filtered ("/%c ", d->format.format);
1575 annotate_display_expression ();
1577 print_expression (d->exp, gdb_stdout);
1578 annotate_display_expression_end ();
1580 printf_filtered (" = ");
1582 annotate_display_expression ();
1584 get_formatted_print_options (&opts, d->format.format);
1585 print_formatted (evaluate_expression (d->exp),
1586 d->format.size, &opts, gdb_stdout);
1587 printf_filtered ("\n");
1590 annotate_display_end ();
1592 gdb_flush (gdb_stdout);
1593 current_display_number = -1;
1596 /* Display all of the values on the auto-display chain which can be
1597 evaluated in the current scope. */
1604 for (d = display_chain; d; d = d->next)
1608 /* Delete the auto-display which we were in the process of displaying.
1609 This is done when there is an error or a signal. */
1612 disable_display (int num)
1616 for (d = display_chain; d; d = d->next)
1617 if (d->number == num)
1622 printf_unfiltered (_("No display number %d.\n"), num);
1626 disable_current_display (void)
1628 if (current_display_number >= 0)
1630 disable_display (current_display_number);
1631 fprintf_unfiltered (gdb_stderr, _("\
1632 Disabling display %d to avoid infinite recursion.\n"),
1633 current_display_number);
1635 current_display_number = -1;
1639 display_info (char *ignore, int from_tty)
1644 printf_unfiltered (_("There are no auto-display expressions now.\n"));
1646 printf_filtered (_("Auto-display expressions now in effect:\n\
1647 Num Enb Expression\n"));
1649 for (d = display_chain; d; d = d->next)
1651 printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]);
1653 printf_filtered ("/%d%c%c ", d->format.count, d->format.size,
1655 else if (d->format.format)
1656 printf_filtered ("/%c ", d->format.format);
1657 print_expression (d->exp, gdb_stdout);
1658 if (d->block && !contained_in (get_selected_block (0), d->block))
1659 printf_filtered (_(" (cannot be evaluated in the current context)"));
1660 printf_filtered ("\n");
1661 gdb_flush (gdb_stdout);
1666 enable_display (char *args, int from_tty)
1675 for (d = display_chain; d; d = d->next)
1682 while (*p1 >= '0' && *p1 <= '9')
1684 if (*p1 && *p1 != ' ' && *p1 != '\t')
1685 error (_("Arguments must be display numbers."));
1689 for (d = display_chain; d; d = d->next)
1690 if (d->number == num)
1695 printf_unfiltered (_("No display number %d.\n"), num);
1698 while (*p == ' ' || *p == '\t')
1704 disable_display_command (char *args, int from_tty)
1712 for (d = display_chain; d; d = d->next)
1719 while (*p1 >= '0' && *p1 <= '9')
1721 if (*p1 && *p1 != ' ' && *p1 != '\t')
1722 error (_("Arguments must be display numbers."));
1724 disable_display (atoi (p));
1727 while (*p == ' ' || *p == '\t')
1733 /* Print the value in stack frame FRAME of a variable specified by a
1734 struct symbol. NAME is the name to print; if NULL then VAR's print
1735 name will be used. STREAM is the ui_file on which to print the
1736 value. INDENT specifies the number of indent levels to print
1737 before printing the variable name. */
1740 print_variable_and_value (const char *name, struct symbol *var,
1741 struct frame_info *frame,
1742 struct ui_file *stream, int indent)
1745 struct value_print_options opts;
1748 name = SYMBOL_PRINT_NAME (var);
1750 fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name);
1752 val = read_var_value (var, frame);
1753 get_user_print_options (&opts);
1754 common_val_print (val, stream, indent, &opts, current_language);
1755 fprintf_filtered (stream, "\n");
1759 printf_command (char *arg, int from_tty)
1763 char *string = NULL;
1764 struct value **val_args;
1766 char *current_substring;
1768 int allocated_args = 20;
1769 struct cleanup *old_cleanups;
1771 val_args = xmalloc (allocated_args * sizeof (struct value *));
1772 old_cleanups = make_cleanup (free_current_contents, &val_args);
1775 error_no_arg (_("format-control string and values to print"));
1777 /* Skip white space before format string */
1778 while (*s == ' ' || *s == '\t')
1781 /* A format string should follow, enveloped in double quotes. */
1783 error (_("Bad format string, missing '\"'."));
1785 /* Parse the format-control string and copy it into the string STRING,
1786 processing some kinds of escape sequence. */
1788 f = string = (char *) alloca (strlen (s) + 1);
1796 error (_("Bad format string, non-terminated '\"'."));
1829 /* ??? TODO: handle other escape sequences */
1830 error (_("Unrecognized escape character \\%c in format string."),
1840 /* Skip over " and following space and comma. */
1843 while (*s == ' ' || *s == '\t')
1846 if (*s != ',' && *s != 0)
1847 error (_("Invalid argument syntax"));
1851 while (*s == ' ' || *s == '\t')
1854 /* Need extra space for the '\0's. Doubling the size is sufficient. */
1855 substrings = alloca (strlen (string) * 2);
1856 current_substring = substrings;
1859 /* Now scan the string for %-specs and see what kinds of args they want.
1860 argclass[I] classifies the %-specs so we can give printf_filtered
1861 something of the right size. */
1865 int_arg, long_arg, long_long_arg, ptr_arg, string_arg,
1866 double_arg, long_double_arg, decfloat_arg
1868 enum argclass *argclass;
1869 enum argclass this_argclass;
1874 argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass);
1881 int seen_hash = 0, seen_zero = 0, lcount = 0, seen_prec = 0;
1882 int seen_space = 0, seen_plus = 0;
1883 int seen_big_l = 0, seen_h = 0, seen_big_h = 0;
1884 int seen_big_d = 0, seen_double_big_d = 0;
1887 /* Check the validity of the format specifier, and work
1888 out what argument it expects. We only accept C89
1889 format strings, with the exception of long long (which
1890 we autoconf for). */
1892 /* Skip over "%%". */
1899 /* The first part of a format specifier is a set of flag
1901 while (strchr ("0-+ #", *f))
1914 /* The next part of a format specifier is a width. */
1915 while (strchr ("0123456789", *f))
1918 /* The next part of a format specifier is a precision. */
1923 while (strchr ("0123456789", *f))
1927 /* The next part of a format specifier is a length modifier. */
1948 /* Decimal32 modifier. */
1954 /* Decimal64 and Decimal128 modifiers. */
1959 /* Check for a Decimal128. */
1963 seen_double_big_d = 1;
1979 if (seen_space || seen_plus)
1986 this_argclass = int_arg;
1987 else if (lcount == 1)
1988 this_argclass = long_arg;
1990 this_argclass = long_long_arg;
1997 this_argclass = int_arg;
1998 if (lcount || seen_h || seen_big_l)
2000 if (seen_prec || seen_zero || seen_space || seen_plus)
2005 this_argclass = ptr_arg;
2006 if (lcount || seen_h || seen_big_l)
2008 if (seen_prec || seen_zero || seen_space || seen_plus)
2013 this_argclass = string_arg;
2014 if (lcount || seen_h || seen_big_l)
2016 if (seen_zero || seen_space || seen_plus)
2025 if (seen_big_h || seen_big_d || seen_double_big_d)
2026 this_argclass = decfloat_arg;
2027 else if (seen_big_l)
2028 this_argclass = long_double_arg;
2030 this_argclass = double_arg;
2032 if (lcount || seen_h)
2037 error (_("`*' not supported for precision or width in printf"));
2040 error (_("Format specifier `n' not supported in printf"));
2043 error (_("Incomplete format specifier at end of format string"));
2046 error (_("Unrecognized format specifier '%c' in printf"), *f);
2050 error (_("Inappropriate modifiers to format specifier '%c' in printf"),
2055 if (lcount > 1 && USE_PRINTF_I64)
2057 /* Windows' printf does support long long, but not the usual way.
2058 Convert %lld to %I64d. */
2059 int length_before_ll = f - last_arg - 1 - lcount;
2060 strncpy (current_substring, last_arg, length_before_ll);
2061 strcpy (current_substring + length_before_ll, "I64");
2062 current_substring[length_before_ll + 3] =
2063 last_arg[length_before_ll + lcount];
2064 current_substring += length_before_ll + 4;
2068 strncpy (current_substring, last_arg, f - last_arg);
2069 current_substring += f - last_arg;
2071 *current_substring++ = '\0';
2073 argclass[nargs_wanted++] = this_argclass;
2076 /* Now, parse all arguments and evaluate them.
2077 Store the VALUEs in VAL_ARGS. */
2082 if (nargs == allocated_args)
2083 val_args = (struct value **) xrealloc ((char *) val_args,
2084 (allocated_args *= 2)
2085 * sizeof (struct value *));
2087 val_args[nargs] = parse_to_comma_and_eval (&s1);
2095 if (nargs != nargs_wanted)
2096 error (_("Wrong number of arguments for specified format-string"));
2098 /* Now actually print them. */
2099 current_substring = substrings;
2100 for (i = 0; i < nargs; i++)
2102 switch (argclass[i])
2109 tem = value_as_address (val_args[i]);
2111 /* This is a %s argument. Find the length of the string. */
2116 read_memory (tem + j, &c, 1);
2121 /* Copy the string contents into a string inside GDB. */
2122 str = (gdb_byte *) alloca (j + 1);
2124 read_memory (tem, str, j);
2127 printf_filtered (current_substring, (char *) str);
2132 struct type *type = value_type (val_args[i]);
2136 /* If format string wants a float, unchecked-convert the value
2137 to floating point of the same size. */
2138 type = float_type_from_length (current_gdbarch, type);
2139 val = unpack_double (type, value_contents (val_args[i]), &inv);
2141 error (_("Invalid floating value found in program."));
2143 printf_filtered (current_substring, (double) val);
2146 case long_double_arg:
2147 #ifdef HAVE_LONG_DOUBLE
2149 struct type *type = value_type (val_args[i]);
2153 /* If format string wants a float, unchecked-convert the value
2154 to floating point of the same size. */
2155 type = float_type_from_length (current_gdbarch, type);
2156 val = unpack_double (type, value_contents (val_args[i]), &inv);
2158 error (_("Invalid floating value found in program."));
2160 printf_filtered (current_substring, (long double) val);
2164 error (_("long double not supported in printf"));
2167 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2169 long long val = value_as_long (val_args[i]);
2170 printf_filtered (current_substring, val);
2174 error (_("long long not supported in printf"));
2178 int val = value_as_long (val_args[i]);
2179 printf_filtered (current_substring, val);
2184 long val = value_as_long (val_args[i]);
2185 printf_filtered (current_substring, val);
2189 /* Handles decimal floating values. */
2192 const gdb_byte *param_ptr = value_contents (val_args[i]);
2193 #if defined (PRINTF_HAS_DECFLOAT)
2194 /* If we have native support for Decimal floating
2195 printing, handle it here. */
2196 printf_filtered (current_substring, param_ptr);
2199 /* As a workaround until vasprintf has native support for DFP
2200 we convert the DFP values to string and print them using
2201 the %s format specifier. */
2204 int nnull_chars = 0;
2206 /* Parameter data. */
2207 struct type *param_type = value_type (val_args[i]);
2208 unsigned int param_len = TYPE_LENGTH (param_type);
2210 /* DFP output data. */
2211 struct value *dfp_value = NULL;
2215 struct type *dfp_type = NULL;
2216 char decstr[MAX_DECIMAL_STRING];
2218 /* Points to the end of the string so that we can go back
2219 and check for DFP length modifiers. */
2220 eos = current_substring + strlen (current_substring);
2222 /* Look for the float/double format specifier. */
2223 while (*eos != 'f' && *eos != 'e' && *eos != 'E'
2224 && *eos != 'g' && *eos != 'G')
2229 /* Search for the '%' char and extract the size and type of
2230 the output decimal value based on its modifiers
2231 (%Hf, %Df, %DDf). */
2232 while (*--sos != '%')
2237 dfp_type = builtin_type (current_gdbarch)->builtin_decfloat;
2239 else if (*sos == 'D' && *(sos - 1) == 'D')
2242 dfp_type = builtin_type (current_gdbarch)->builtin_declong;
2248 dfp_type = builtin_type (current_gdbarch)->builtin_decdouble;
2252 /* Replace %Hf, %Df and %DDf with %s's. */
2255 /* Go through the whole format string and pull the correct
2256 number of chars back to compensate for the change in the
2257 format specifier. */
2258 while (nnull_chars < nargs - i)
2266 /* Conversion between different DFP types. */
2267 if (TYPE_CODE (param_type) == TYPE_CODE_DECFLOAT)
2268 decimal_convert (param_ptr, param_len, dec, dfp_len);
2270 /* If this is a non-trivial conversion, just output 0.
2271 A correct converted value can be displayed by explicitly
2272 casting to a DFP type. */
2273 decimal_from_string (dec, dfp_len, "0");
2275 dfp_value = value_from_decfloat (dfp_type, dec);
2277 dfp_ptr = (gdb_byte *) value_contents (dfp_value);
2279 decimal_to_string (dfp_ptr, dfp_len, decstr);
2281 /* Print the DFP value. */
2282 printf_filtered (current_substring, decstr);
2290 /* We avoid the host's %p because pointers are too
2291 likely to be the wrong size. The only interesting
2292 modifier for %p is a width; extract that, and then
2293 handle %p as glibc would: %#x or a literal "(nil)". */
2295 char *p, *fmt, *fmt_p;
2296 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2297 long long val = value_as_long (val_args[i]);
2299 long val = value_as_long (val_args[i]);
2302 fmt = alloca (strlen (current_substring) + 5);
2304 /* Copy up to the leading %. */
2305 p = current_substring;
2309 int is_percent = (*p == '%');
2323 /* Copy any width. */
2324 while (*p >= '0' && *p < '9')
2327 gdb_assert (*p == 'p' && *(p + 1) == '\0');
2330 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2336 printf_filtered (fmt, val);
2342 printf_filtered (fmt, "(nil)");
2348 internal_error (__FILE__, __LINE__,
2349 _("failed internal consistency check"));
2351 /* Skip to the next substring. */
2352 current_substring += strlen (current_substring) + 1;
2354 /* Print the portion of the format string after the last argument. */
2355 puts_filtered (last_arg);
2357 do_cleanups (old_cleanups);
2361 _initialize_printcmd (void)
2363 struct cmd_list_element *c;
2365 current_display_number = -1;
2367 add_info ("address", address_info,
2368 _("Describe where symbol SYM is stored."));
2370 add_info ("symbol", sym_info, _("\
2371 Describe what symbol is at location ADDR.\n\
2372 Only for symbols with fixed locations (global or static scope)."));
2374 add_com ("x", class_vars, x_command, _("\
2375 Examine memory: x/FMT ADDRESS.\n\
2376 ADDRESS is an expression for the memory address to examine.\n\
2377 FMT is a repeat count followed by a format letter and a size letter.\n\
2378 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2379 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\
2380 Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2381 The specified number of objects of the specified size are printed\n\
2382 according to the format.\n\n\
2383 Defaults for format and size letters are those previously used.\n\
2384 Default count is 1. Default address is following last thing printed\n\
2385 with this command or \"print\"."));
2388 add_com ("whereis", class_vars, whereis_command,
2389 _("Print line number and file of definition of variable."));
2392 add_info ("display", display_info, _("\
2393 Expressions to display when program stops, with code numbers."));
2395 add_cmd ("undisplay", class_vars, undisplay_command, _("\
2396 Cancel some expressions to be displayed when program stops.\n\
2397 Arguments are the code numbers of the expressions to stop displaying.\n\
2398 No argument means cancel all automatic-display expressions.\n\
2399 \"delete display\" has the same effect as this command.\n\
2400 Do \"info display\" to see current list of code numbers."),
2403 add_com ("display", class_vars, display_command, _("\
2404 Print value of expression EXP each time the program stops.\n\
2405 /FMT may be used before EXP as in the \"print\" command.\n\
2406 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2407 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2408 and examining is done as in the \"x\" command.\n\n\
2409 With no argument, display all currently requested auto-display expressions.\n\
2410 Use \"undisplay\" to cancel display requests previously made."));
2412 add_cmd ("display", class_vars, enable_display, _("\
2413 Enable some expressions to be displayed when program stops.\n\
2414 Arguments are the code numbers of the expressions to resume displaying.\n\
2415 No argument means enable all automatic-display expressions.\n\
2416 Do \"info display\" to see current list of code numbers."), &enablelist);
2418 add_cmd ("display", class_vars, disable_display_command, _("\
2419 Disable some expressions to be displayed when program stops.\n\
2420 Arguments are the code numbers of the expressions to stop displaying.\n\
2421 No argument means disable all automatic-display expressions.\n\
2422 Do \"info display\" to see current list of code numbers."), &disablelist);
2424 add_cmd ("display", class_vars, undisplay_command, _("\
2425 Cancel some expressions to be displayed when program stops.\n\
2426 Arguments are the code numbers of the expressions to stop displaying.\n\
2427 No argument means cancel all automatic-display expressions.\n\
2428 Do \"info display\" to see current list of code numbers."), &deletelist);
2430 add_com ("printf", class_vars, printf_command, _("\
2431 printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2432 This is useful for formatted output in user-defined commands."));
2434 add_com ("output", class_vars, output_command, _("\
2435 Like \"print\" but don't put in value history and don't print newline.\n\
2436 This is useful in user-defined commands."));
2438 add_prefix_cmd ("set", class_vars, set_command, _("\
2439 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2440 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2441 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2442 with $), a register (a few standard names starting with $), or an actual\n\
2443 variable in the program being debugged. EXP is any valid expression.\n\
2444 Use \"set variable\" for variables with names identical to set subcommands.\n\
2446 With a subcommand, this command modifies parts of the gdb environment.\n\
2447 You can see these environment settings with the \"show\" command."),
2448 &setlist, "set ", 1, &cmdlist);
2450 add_com ("assign", class_vars, set_command, _("\
2451 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2452 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2453 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2454 with $), a register (a few standard names starting with $), or an actual\n\
2455 variable in the program being debugged. EXP is any valid expression.\n\
2456 Use \"set variable\" for variables with names identical to set subcommands.\n\
2457 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2458 You can see these environment settings with the \"show\" command."));
2460 /* "call" is the same as "set", but handy for dbx users to call fns. */
2461 c = add_com ("call", class_vars, call_command, _("\
2462 Call a function in the program.\n\
2463 The argument is the function name and arguments, in the notation of the\n\
2464 current working language. The result is printed and saved in the value\n\
2465 history, if it is not void."));
2466 set_cmd_completer (c, expression_completer);
2468 add_cmd ("variable", class_vars, set_command, _("\
2469 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2470 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2471 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2472 with $), a register (a few standard names starting with $), or an actual\n\
2473 variable in the program being debugged. EXP is any valid expression.\n\
2474 This may usually be abbreviated to simply \"set\"."),
2477 c = add_com ("print", class_vars, print_command, _("\
2478 Print value of expression EXP.\n\
2479 Variables accessible are those of the lexical environment of the selected\n\
2480 stack frame, plus all those whose scope is global or an entire file.\n\
2482 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2483 $$NUM refers to NUM'th value back from the last one.\n\
2484 Names starting with $ refer to registers (with the values they would have\n\
2485 if the program were to return to the stack frame now selected, restoring\n\
2486 all registers saved by frames farther in) or else to debugger\n\
2487 \"convenience\" variables (any such name not a known register).\n\
2488 Use assignment expressions to give values to convenience variables.\n\
2490 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2491 @ is a binary operator for treating consecutive data objects\n\
2492 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2493 element is FOO, whose second element is stored in the space following\n\
2494 where FOO is stored, etc. FOO must be an expression whose value\n\
2495 resides in memory.\n\
2497 EXP may be preceded with /FMT, where FMT is a format letter\n\
2498 but no count or size letter (see \"x\" command)."));
2499 set_cmd_completer (c, expression_completer);
2500 add_com_alias ("p", "print", class_vars, 1);
2502 c = add_com ("inspect", class_vars, inspect_command, _("\
2503 Same as \"print\" command, except that if you are running in the epoch\n\
2504 environment, the value is printed in its own window."));
2505 set_cmd_completer (c, expression_completer);
2507 add_setshow_uinteger_cmd ("max-symbolic-offset", no_class,
2508 &max_symbolic_offset, _("\
2509 Set the largest offset that will be printed in <symbol+1234> form."), _("\
2510 Show the largest offset that will be printed in <symbol+1234> form."), NULL,
2512 show_max_symbolic_offset,
2513 &setprintlist, &showprintlist);
2514 add_setshow_boolean_cmd ("symbol-filename", no_class,
2515 &print_symbol_filename, _("\
2516 Set printing of source filename and line number with <symbol>."), _("\
2517 Show printing of source filename and line number with <symbol>."), NULL,
2519 show_print_symbol_filename,
2520 &setprintlist, &showprintlist);
2522 /* For examine/instruction a single byte quantity is specified as
2523 the data. This avoids problems with value_at_lazy() requiring a
2524 valid data type (and rejecting VOID). */
2525 examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL);
2527 examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL);
2528 examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL);
2529 examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL);
2530 examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL);