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, 2010, 2011 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"
49 #include "parser-defs.h"
51 #include "arch-utils.h"
53 #include "cli/cli-utils.h"
56 #include "tui/tui.h" /* For tui_active et al. */
59 #if defined(__MINGW32__) && !defined(PRINTF_HAS_LONG_LONG)
60 # define USE_PRINTF_I64 1
61 # define PRINTF_HAS_LONG_LONG
63 # define USE_PRINTF_I64 0
66 extern int asm_demangle
; /* Whether to demangle syms in asm
75 /* True if the value should be printed raw -- that is, bypassing
76 python-based formatters. */
80 /* Last specified output format. */
82 static char last_format
= 0;
84 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
86 static char last_size
= 'w';
88 /* Default address to examine next, and associated architecture. */
90 static struct gdbarch
*next_gdbarch
;
91 static CORE_ADDR next_address
;
93 /* Number of delay instructions following current disassembled insn. */
95 static int branch_delay_insns
;
97 /* Last address examined. */
99 static CORE_ADDR last_examine_address
;
101 /* Contents of last address examined.
102 This is not valid past the end of the `x' command! */
104 static struct value
*last_examine_value
;
106 /* Largest offset between a symbolic value and an address, that will be
107 printed as `0x1234 <symbol+offset>'. */
109 static unsigned int max_symbolic_offset
= UINT_MAX
;
111 show_max_symbolic_offset (struct ui_file
*file
, int from_tty
,
112 struct cmd_list_element
*c
, const char *value
)
114 fprintf_filtered (file
,
115 _("The largest offset that will be "
116 "printed in <symbol+1234> form is %s.\n"),
120 /* Append the source filename and linenumber of the symbol when
121 printing a symbolic value as `<symbol at filename:linenum>' if set. */
122 static int print_symbol_filename
= 0;
124 show_print_symbol_filename (struct ui_file
*file
, int from_tty
,
125 struct cmd_list_element
*c
, const char *value
)
127 fprintf_filtered (file
, _("Printing of source filename and "
128 "line number with <symbol> is %s.\n"),
132 /* Number of auto-display expression currently being displayed.
133 So that we can disable it if we get an error or a signal within it.
134 -1 when not doing one. */
136 int current_display_number
;
140 /* Chain link to next auto-display item. */
141 struct display
*next
;
143 /* The expression as the user typed it. */
146 /* Expression to be evaluated and displayed. */
147 struct expression
*exp
;
149 /* Item number of this auto-display item. */
152 /* Display format specified. */
153 struct format_data format
;
155 /* Program space associated with `block'. */
156 struct program_space
*pspace
;
158 /* Innermost block required by this expression when evaluated. */
161 /* Status of this display (enabled or disabled). */
165 /* Chain of expressions whose values should be displayed
166 automatically each time the program stops. */
168 static struct display
*display_chain
;
170 static int display_number
;
172 /* Walk the following statement or block through all displays. */
174 #define ALL_DISPLAYS(B) \
175 for (B = display_chain; B; B = B->next)
177 /* Prototypes for exported functions. */
179 void output_command (char *, int);
181 void _initialize_printcmd (void);
183 /* Prototypes for local functions. */
185 static void do_one_display (struct display
*);
188 /* Decode a format specification. *STRING_PTR should point to it.
189 OFORMAT and OSIZE are used as defaults for the format and size
190 if none are given in the format specification.
191 If OSIZE is zero, then the size field of the returned value
192 should be set only if a size is explicitly specified by the
194 The structure returned describes all the data
195 found in the specification. In addition, *STRING_PTR is advanced
196 past the specification and past all whitespace following it. */
198 static struct format_data
199 decode_format (char **string_ptr
, int oformat
, int osize
)
201 struct format_data val
;
202 char *p
= *string_ptr
;
209 if (*p
>= '0' && *p
<= '9')
210 val
.count
= atoi (p
);
211 while (*p
>= '0' && *p
<= '9')
214 /* Now process size or format letters that follow. */
218 if (*p
== 'b' || *p
== 'h' || *p
== 'w' || *p
== 'g')
225 else if (*p
>= 'a' && *p
<= 'z')
231 while (*p
== ' ' || *p
== '\t')
235 /* Set defaults for format and size if not specified. */
236 if (val
.format
== '?')
240 /* Neither has been specified. */
241 val
.format
= oformat
;
245 /* If a size is specified, any format makes a reasonable
246 default except 'i'. */
247 val
.format
= oformat
== 'i' ? 'x' : oformat
;
249 else if (val
.size
== '?')
253 /* Pick the appropriate size for an address. This is deferred
254 until do_examine when we know the actual architecture to use.
255 A special size value of 'a' is used to indicate this case. */
256 val
.size
= osize
? 'a' : osize
;
259 /* Floating point has to be word or giantword. */
260 if (osize
== 'w' || osize
== 'g')
263 /* Default it to giantword if the last used size is not
265 val
.size
= osize
? 'g' : osize
;
268 /* Characters default to one byte. */
269 val
.size
= osize
? 'b' : osize
;
272 /* Display strings with byte size chars unless explicitly
278 /* The default is the size most recently specified. */
285 /* Print value VAL on stream according to OPTIONS.
286 Do not end with a newline.
287 SIZE is the letter for the size of datum being printed.
288 This is used to pad hex numbers so they line up. SIZE is 0
289 for print / output and set for examine. */
292 print_formatted (struct value
*val
, int size
,
293 const struct value_print_options
*options
,
294 struct ui_file
*stream
)
296 struct type
*type
= check_typedef (value_type (val
));
297 int len
= TYPE_LENGTH (type
);
299 if (VALUE_LVAL (val
) == lval_memory
)
300 next_address
= value_address (val
) + len
;
304 switch (options
->format
)
308 struct type
*elttype
= value_type (val
);
310 next_address
= (value_address (val
)
311 + val_print_string (elttype
, NULL
,
312 value_address (val
), -1,
313 stream
, options
) * len
);
318 /* We often wrap here if there are long symbolic names. */
320 next_address
= (value_address (val
)
321 + gdb_print_insn (get_type_arch (type
),
322 value_address (val
), stream
,
323 &branch_delay_insns
));
328 if (options
->format
== 0 || options
->format
== 's'
329 || TYPE_CODE (type
) == TYPE_CODE_REF
330 || TYPE_CODE (type
) == TYPE_CODE_ARRAY
331 || TYPE_CODE (type
) == TYPE_CODE_STRING
332 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
333 || TYPE_CODE (type
) == TYPE_CODE_UNION
334 || TYPE_CODE (type
) == TYPE_CODE_NAMESPACE
)
335 value_print (val
, stream
, options
);
337 /* User specified format, so don't look to the the type to
338 tell us what to do. */
339 val_print_scalar_formatted (type
,
340 value_contents_for_printing (val
),
341 value_embedded_offset (val
),
343 options
, size
, stream
);
346 /* Return builtin floating point type of same length as TYPE.
347 If no such type is found, return TYPE itself. */
349 float_type_from_length (struct type
*type
)
351 struct gdbarch
*gdbarch
= get_type_arch (type
);
352 const struct builtin_type
*builtin
= builtin_type (gdbarch
);
353 unsigned int len
= TYPE_LENGTH (type
);
355 if (len
== TYPE_LENGTH (builtin
->builtin_float
))
356 type
= builtin
->builtin_float
;
357 else if (len
== TYPE_LENGTH (builtin
->builtin_double
))
358 type
= builtin
->builtin_double
;
359 else if (len
== TYPE_LENGTH (builtin
->builtin_long_double
))
360 type
= builtin
->builtin_long_double
;
365 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
366 according to OPTIONS and SIZE on STREAM. Formats s and i are not
367 supported at this level. */
370 print_scalar_formatted (const void *valaddr
, struct type
*type
,
371 const struct value_print_options
*options
,
372 int size
, struct ui_file
*stream
)
374 struct gdbarch
*gdbarch
= get_type_arch (type
);
375 LONGEST val_long
= 0;
376 unsigned int len
= TYPE_LENGTH (type
);
377 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
379 /* String printing should go through val_print_scalar_formatted. */
380 gdb_assert (options
->format
!= 's');
382 if (len
> sizeof(LONGEST
) &&
383 (TYPE_CODE (type
) == TYPE_CODE_INT
384 || TYPE_CODE (type
) == TYPE_CODE_ENUM
))
386 switch (options
->format
)
389 print_octal_chars (stream
, valaddr
, len
, byte_order
);
393 print_decimal_chars (stream
, valaddr
, len
, byte_order
);
396 print_binary_chars (stream
, valaddr
, len
, byte_order
);
399 print_hex_chars (stream
, valaddr
, len
, byte_order
);
402 print_char_chars (stream
, type
, valaddr
, len
, byte_order
);
409 if (options
->format
!= 'f')
410 val_long
= unpack_long (type
, valaddr
);
412 /* If the value is a pointer, and pointers and addresses are not the
413 same, then at this point, the value's length (in target bytes) is
414 gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
415 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
416 len
= gdbarch_addr_bit (gdbarch
) / TARGET_CHAR_BIT
;
418 /* If we are printing it as unsigned, truncate it in case it is actually
419 a negative signed value (e.g. "print/u (short)-1" should print 65535
420 (if shorts are 16 bits) instead of 4294967295). */
421 if (options
->format
!= 'd' || TYPE_UNSIGNED (type
))
423 if (len
< sizeof (LONGEST
))
424 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
427 switch (options
->format
)
432 /* No size specified, like in print. Print varying # of digits. */
433 print_longest (stream
, 'x', 1, val_long
);
442 print_longest (stream
, size
, 1, val_long
);
445 error (_("Undefined output size \"%c\"."), size
);
450 print_longest (stream
, 'd', 1, val_long
);
454 print_longest (stream
, 'u', 0, val_long
);
459 print_longest (stream
, 'o', 1, val_long
);
461 fprintf_filtered (stream
, "0");
466 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
468 print_address (gdbarch
, addr
, stream
);
474 struct value_print_options opts
= *options
;
477 if (TYPE_UNSIGNED (type
))
478 type
= builtin_type (gdbarch
)->builtin_true_unsigned_char
;
480 type
= builtin_type (gdbarch
)->builtin_true_char
;
482 value_print (value_from_longest (type
, val_long
), stream
, &opts
);
487 type
= float_type_from_length (type
);
488 print_floating (valaddr
, type
, stream
);
492 internal_error (__FILE__
, __LINE__
,
493 _("failed internal consistency check"));
496 /* Binary; 't' stands for "two". */
498 char bits
[8 * (sizeof val_long
) + 1];
499 char buf
[8 * (sizeof val_long
) + 32];
504 width
= 8 * (sizeof val_long
);
521 error (_("Undefined output size \"%c\"."), size
);
527 bits
[width
] = (val_long
& 1) ? '1' : '0';
532 while (*cp
&& *cp
== '0')
538 fputs_filtered (buf
, stream
);
543 error (_("Undefined output format \"%c\"."), options
->format
);
547 /* Specify default address for `x' command.
548 The `info lines' command uses this. */
551 set_next_address (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
553 struct type
*ptr_type
= builtin_type (gdbarch
)->builtin_data_ptr
;
555 next_gdbarch
= gdbarch
;
558 /* Make address available to the user as $_. */
559 set_internalvar (lookup_internalvar ("_"),
560 value_from_pointer (ptr_type
, addr
));
563 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
564 after LEADIN. Print nothing if no symbolic name is found nearby.
565 Optionally also print source file and line number, if available.
566 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
567 or to interpret it as a possible C++ name and convert it back to source
568 form. However note that DO_DEMANGLE can be overridden by the specific
569 settings of the demangle and asm_demangle variables. */
572 print_address_symbolic (struct gdbarch
*gdbarch
, CORE_ADDR addr
,
573 struct ui_file
*stream
,
574 int do_demangle
, char *leadin
)
577 char *filename
= NULL
;
582 /* Throw away both name and filename. */
583 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
584 make_cleanup (free_current_contents
, &filename
);
586 if (build_address_symbolic (gdbarch
, addr
, do_demangle
, &name
, &offset
,
587 &filename
, &line
, &unmapped
))
589 do_cleanups (cleanup_chain
);
593 fputs_filtered (leadin
, stream
);
595 fputs_filtered ("<*", stream
);
597 fputs_filtered ("<", stream
);
598 fputs_filtered (name
, stream
);
600 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
602 /* Append source filename and line number if desired. Give specific
603 line # of this addr, if we have it; else line # of the nearest symbol. */
604 if (print_symbol_filename
&& filename
!= NULL
)
607 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
609 fprintf_filtered (stream
, " in %s", filename
);
612 fputs_filtered ("*>", stream
);
614 fputs_filtered (">", stream
);
616 do_cleanups (cleanup_chain
);
619 /* Given an address ADDR return all the elements needed to print the
620 address in a symbolic form. NAME can be mangled or not depending
621 on DO_DEMANGLE (and also on the asm_demangle global variable,
622 manipulated via ''set print asm-demangle''). Return 0 in case of
623 success, when all the info in the OUT paramters is valid. Return 1
626 build_address_symbolic (struct gdbarch
*gdbarch
,
627 CORE_ADDR addr
, /* IN */
628 int do_demangle
, /* IN */
629 char **name
, /* OUT */
630 int *offset
, /* OUT */
631 char **filename
, /* OUT */
633 int *unmapped
) /* OUT */
635 struct minimal_symbol
*msymbol
;
636 struct symbol
*symbol
;
637 CORE_ADDR name_location
= 0;
638 struct obj_section
*section
= NULL
;
639 char *name_temp
= "";
641 /* Let's say it is mapped (not unmapped). */
644 /* Determine if the address is in an overlay, and whether it is
646 if (overlay_debugging
)
648 section
= find_pc_overlay (addr
);
649 if (pc_in_unmapped_range (addr
, section
))
652 addr
= overlay_mapped_address (addr
, section
);
656 /* First try to find the address in the symbol table, then
657 in the minsyms. Take the closest one. */
659 /* This is defective in the sense that it only finds text symbols. So
660 really this is kind of pointless--we should make sure that the
661 minimal symbols have everything we need (by changing that we could
662 save some memory, but for many debug format--ELF/DWARF or
663 anything/stabs--it would be inconvenient to eliminate those minimal
665 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
666 symbol
= find_pc_sect_function (addr
, section
);
670 /* If this is a function (i.e. a code address), strip out any
671 non-address bits. For instance, display a pointer to the
672 first instruction of a Thumb function as <function>; the
673 second instruction will be <function+2>, even though the
674 pointer is <function+3>. This matches the ISA behavior. */
675 addr
= gdbarch_addr_bits_remove (gdbarch
, addr
);
677 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
678 if (do_demangle
|| asm_demangle
)
679 name_temp
= SYMBOL_PRINT_NAME (symbol
);
681 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
686 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
688 /* The msymbol is closer to the address than the symbol;
689 use the msymbol instead. */
691 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
692 if (do_demangle
|| asm_demangle
)
693 name_temp
= SYMBOL_PRINT_NAME (msymbol
);
695 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
698 if (symbol
== NULL
&& msymbol
== NULL
)
701 /* If the nearest symbol is too far away, don't print anything symbolic. */
703 /* For when CORE_ADDR is larger than unsigned int, we do math in
704 CORE_ADDR. But when we detect unsigned wraparound in the
705 CORE_ADDR math, we ignore this test and print the offset,
706 because addr+max_symbolic_offset has wrapped through the end
707 of the address space back to the beginning, giving bogus comparison. */
708 if (addr
> name_location
+ max_symbolic_offset
709 && name_location
+ max_symbolic_offset
> name_location
)
712 *offset
= addr
- name_location
;
714 *name
= xstrdup (name_temp
);
716 if (print_symbol_filename
)
718 struct symtab_and_line sal
;
720 sal
= find_pc_sect_line (addr
, section
, 0);
724 *filename
= xstrdup (sal
.symtab
->filename
);
732 /* Print address ADDR symbolically on STREAM.
733 First print it as a number. Then perhaps print
734 <SYMBOL + OFFSET> after the number. */
737 print_address (struct gdbarch
*gdbarch
,
738 CORE_ADDR addr
, struct ui_file
*stream
)
740 fputs_filtered (paddress (gdbarch
, addr
), stream
);
741 print_address_symbolic (gdbarch
, addr
, stream
, asm_demangle
, " ");
744 /* Return a prefix for instruction address:
745 "=> " for current instruction, else " ". */
748 pc_prefix (CORE_ADDR addr
)
750 if (has_stack_frames ())
752 struct frame_info
*frame
;
755 frame
= get_selected_frame (NULL
);
756 pc
= get_frame_pc (frame
);
764 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
765 controls whether to print the symbolic name "raw" or demangled.
766 Global setting "addressprint" controls whether to print hex address
770 print_address_demangle (struct gdbarch
*gdbarch
, CORE_ADDR addr
,
771 struct ui_file
*stream
, int do_demangle
)
773 struct value_print_options opts
;
775 get_user_print_options (&opts
);
778 fprintf_filtered (stream
, "0");
780 else if (opts
.addressprint
)
782 fputs_filtered (paddress (gdbarch
, addr
), stream
);
783 print_address_symbolic (gdbarch
, addr
, stream
, do_demangle
, " ");
787 print_address_symbolic (gdbarch
, addr
, stream
, do_demangle
, "");
792 /* Examine data at address ADDR in format FMT.
793 Fetch it from memory and print on gdb_stdout. */
796 do_examine (struct format_data fmt
, struct gdbarch
*gdbarch
, CORE_ADDR addr
)
801 struct type
*val_type
= NULL
;
804 struct value_print_options opts
;
809 next_gdbarch
= gdbarch
;
812 /* Instruction format implies fetch single bytes
813 regardless of the specified size.
814 The case of strings is handled in decode_format, only explicit
815 size operator are not changed to 'b'. */
821 /* Pick the appropriate size for an address. */
822 if (gdbarch_ptr_bit (next_gdbarch
) == 64)
824 else if (gdbarch_ptr_bit (next_gdbarch
) == 32)
826 else if (gdbarch_ptr_bit (next_gdbarch
) == 16)
829 /* Bad value for gdbarch_ptr_bit. */
830 internal_error (__FILE__
, __LINE__
,
831 _("failed internal consistency check"));
835 val_type
= builtin_type (next_gdbarch
)->builtin_int8
;
836 else if (size
== 'h')
837 val_type
= builtin_type (next_gdbarch
)->builtin_int16
;
838 else if (size
== 'w')
839 val_type
= builtin_type (next_gdbarch
)->builtin_int32
;
840 else if (size
== 'g')
841 val_type
= builtin_type (next_gdbarch
)->builtin_int64
;
845 struct type
*char_type
= NULL
;
847 /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char
848 if type is not found. */
850 char_type
= builtin_type (next_gdbarch
)->builtin_char16
;
851 else if (size
== 'w')
852 char_type
= builtin_type (next_gdbarch
)->builtin_char32
;
854 val_type
= char_type
;
857 if (size
!= '\0' && size
!= 'b')
858 warning (_("Unable to display strings with "
859 "size '%c', using 'b' instead."), size
);
861 val_type
= builtin_type (next_gdbarch
)->builtin_int8
;
870 if (format
== 's' || format
== 'i')
873 get_formatted_print_options (&opts
, format
);
875 /* Print as many objects as specified in COUNT, at most maxelts per line,
876 with the address of the next one at the start of each line. */
882 fputs_filtered (pc_prefix (next_address
), gdb_stdout
);
883 print_address (next_gdbarch
, next_address
, gdb_stdout
);
884 printf_filtered (":");
889 printf_filtered ("\t");
890 /* Note that print_formatted sets next_address for the next
892 last_examine_address
= next_address
;
894 if (last_examine_value
)
895 value_free (last_examine_value
);
897 /* The value to be displayed is not fetched greedily.
898 Instead, to avoid the possibility of a fetched value not
899 being used, its retrieval is delayed until the print code
900 uses it. When examining an instruction stream, the
901 disassembler will perform its own memory fetch using just
902 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
903 the disassembler be modified so that LAST_EXAMINE_VALUE
904 is left with the byte sequence from the last complete
905 instruction fetched from memory? */
906 last_examine_value
= value_at_lazy (val_type
, next_address
);
908 if (last_examine_value
)
909 release_value (last_examine_value
);
911 print_formatted (last_examine_value
, size
, &opts
, gdb_stdout
);
913 /* Display any branch delay slots following the final insn. */
914 if (format
== 'i' && count
== 1)
915 count
+= branch_delay_insns
;
917 printf_filtered ("\n");
918 gdb_flush (gdb_stdout
);
923 validate_format (struct format_data fmt
, char *cmdname
)
926 error (_("Size letters are meaningless in \"%s\" command."), cmdname
);
928 error (_("Item count other than 1 is meaningless in \"%s\" command."),
930 if (fmt
.format
== 'i')
931 error (_("Format letter \"%c\" is meaningless in \"%s\" command."),
932 fmt
.format
, cmdname
);
935 /* Evaluate string EXP as an expression in the current language and
936 print the resulting value. EXP may contain a format specifier as the
937 first argument ("/x myvar" for example, to print myvar in hex). */
940 print_command_1 (char *exp
, int inspect
, int voidprint
)
942 struct expression
*expr
;
943 struct cleanup
*old_chain
= 0;
946 struct format_data fmt
;
949 if (exp
&& *exp
== '/')
952 fmt
= decode_format (&exp
, last_format
, 0);
953 validate_format (fmt
, "print");
954 last_format
= format
= fmt
.format
;
966 expr
= parse_expression (exp
);
967 old_chain
= make_cleanup (free_current_contents
, &expr
);
969 val
= evaluate_expression (expr
);
972 val
= access_value_history (0);
974 if (voidprint
|| (val
&& value_type (val
) &&
975 TYPE_CODE (value_type (val
)) != TYPE_CODE_VOID
))
977 struct value_print_options opts
;
978 int histindex
= record_latest_value (val
);
981 annotate_value_history_begin (histindex
, value_type (val
));
983 annotate_value_begin (value_type (val
));
986 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"",
988 else if (histindex
>= 0)
989 printf_filtered ("$%d = ", histindex
);
992 annotate_value_history_value ();
994 get_formatted_print_options (&opts
, format
);
995 opts
.inspect_it
= inspect
;
998 print_formatted (val
, fmt
.size
, &opts
, gdb_stdout
);
999 printf_filtered ("\n");
1002 annotate_value_history_end ();
1004 annotate_value_end ();
1007 printf_unfiltered ("\") )\030");
1011 do_cleanups (old_chain
);
1015 print_command (char *exp
, int from_tty
)
1017 print_command_1 (exp
, 0, 1);
1020 /* Same as print, except in epoch, it gets its own window. */
1022 inspect_command (char *exp
, int from_tty
)
1024 extern int epoch_interface
;
1026 print_command_1 (exp
, epoch_interface
, 1);
1029 /* Same as print, except it doesn't print void results. */
1031 call_command (char *exp
, int from_tty
)
1033 print_command_1 (exp
, 0, 0);
1037 output_command (char *exp
, int from_tty
)
1039 struct expression
*expr
;
1040 struct cleanup
*old_chain
;
1043 struct format_data fmt
;
1044 struct value_print_options opts
;
1049 if (exp
&& *exp
== '/')
1052 fmt
= decode_format (&exp
, 0, 0);
1053 validate_format (fmt
, "output");
1054 format
= fmt
.format
;
1057 expr
= parse_expression (exp
);
1058 old_chain
= make_cleanup (free_current_contents
, &expr
);
1060 val
= evaluate_expression (expr
);
1062 annotate_value_begin (value_type (val
));
1064 get_formatted_print_options (&opts
, format
);
1066 print_formatted (val
, fmt
.size
, &opts
, gdb_stdout
);
1068 annotate_value_end ();
1071 gdb_flush (gdb_stdout
);
1073 do_cleanups (old_chain
);
1077 set_command (char *exp
, int from_tty
)
1079 struct expression
*expr
= parse_expression (exp
);
1080 struct cleanup
*old_chain
=
1081 make_cleanup (free_current_contents
, &expr
);
1083 evaluate_expression (expr
);
1084 do_cleanups (old_chain
);
1088 sym_info (char *arg
, int from_tty
)
1090 struct minimal_symbol
*msymbol
;
1091 struct objfile
*objfile
;
1092 struct obj_section
*osect
;
1093 CORE_ADDR addr
, sect_addr
;
1095 unsigned int offset
;
1098 error_no_arg (_("address"));
1100 addr
= parse_and_eval_address (arg
);
1101 ALL_OBJSECTIONS (objfile
, osect
)
1103 /* Only process each object file once, even if there's a separate
1105 if (objfile
->separate_debug_objfile_backlink
)
1108 sect_addr
= overlay_mapped_address (addr
, osect
);
1110 if (obj_section_addr (osect
) <= sect_addr
1111 && sect_addr
< obj_section_endaddr (osect
)
1112 && (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, osect
)))
1114 const char *obj_name
, *mapped
, *sec_name
, *msym_name
;
1116 struct cleanup
*old_chain
;
1119 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1120 mapped
= section_is_mapped (osect
) ? _("mapped") : _("unmapped");
1121 sec_name
= osect
->the_bfd_section
->name
;
1122 msym_name
= SYMBOL_PRINT_NAME (msymbol
);
1124 /* Don't print the offset if it is zero.
1125 We assume there's no need to handle i18n of "sym + offset". */
1127 loc_string
= xstrprintf ("%s + %u", msym_name
, offset
);
1129 loc_string
= xstrprintf ("%s", msym_name
);
1131 /* Use a cleanup to free loc_string in case the user quits
1132 a pagination request inside printf_filtered. */
1133 old_chain
= make_cleanup (xfree
, loc_string
);
1135 gdb_assert (osect
->objfile
&& osect
->objfile
->name
);
1136 obj_name
= osect
->objfile
->name
;
1138 if (MULTI_OBJFILE_P ())
1139 if (pc_in_unmapped_range (addr
, osect
))
1140 if (section_is_overlay (osect
))
1141 printf_filtered (_("%s in load address range of "
1142 "%s overlay section %s of %s\n"),
1143 loc_string
, mapped
, sec_name
, obj_name
);
1145 printf_filtered (_("%s in load address range of "
1146 "section %s of %s\n"),
1147 loc_string
, sec_name
, obj_name
);
1149 if (section_is_overlay (osect
))
1150 printf_filtered (_("%s in %s overlay section %s of %s\n"),
1151 loc_string
, mapped
, sec_name
, obj_name
);
1153 printf_filtered (_("%s in section %s of %s\n"),
1154 loc_string
, sec_name
, obj_name
);
1156 if (pc_in_unmapped_range (addr
, osect
))
1157 if (section_is_overlay (osect
))
1158 printf_filtered (_("%s in load address range of %s overlay "
1160 loc_string
, mapped
, sec_name
);
1162 printf_filtered (_("%s in load address range of section %s\n"),
1163 loc_string
, sec_name
);
1165 if (section_is_overlay (osect
))
1166 printf_filtered (_("%s in %s overlay section %s\n"),
1167 loc_string
, mapped
, sec_name
);
1169 printf_filtered (_("%s in section %s\n"),
1170 loc_string
, sec_name
);
1172 do_cleanups (old_chain
);
1176 printf_filtered (_("No symbol matches %s.\n"), arg
);
1180 address_info (char *exp
, int from_tty
)
1182 struct gdbarch
*gdbarch
;
1185 struct minimal_symbol
*msymbol
;
1187 struct obj_section
*section
;
1188 CORE_ADDR load_addr
, context_pc
= 0;
1189 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1190 if exp is a field of `this'. */
1193 error (_("Argument required."));
1195 sym
= lookup_symbol (exp
, get_selected_block (&context_pc
), VAR_DOMAIN
,
1196 &is_a_field_of_this
);
1199 if (is_a_field_of_this
)
1201 printf_filtered ("Symbol \"");
1202 fprintf_symbol_filtered (gdb_stdout
, exp
,
1203 current_language
->la_language
, DMGL_ANSI
);
1204 printf_filtered ("\" is a field of the local class variable ");
1205 if (current_language
->la_language
== language_objc
)
1206 printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
1208 printf_filtered ("`this'\n");
1212 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1214 if (msymbol
!= NULL
)
1216 gdbarch
= get_objfile_arch (msymbol_objfile (msymbol
));
1217 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1219 printf_filtered ("Symbol \"");
1220 fprintf_symbol_filtered (gdb_stdout
, exp
,
1221 current_language
->la_language
, DMGL_ANSI
);
1222 printf_filtered ("\" is at ");
1223 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1224 printf_filtered (" in a file compiled without debugging");
1225 section
= SYMBOL_OBJ_SECTION (msymbol
);
1226 if (section_is_overlay (section
))
1228 load_addr
= overlay_unmapped_address (load_addr
, section
);
1229 printf_filtered (",\n -- loaded at ");
1230 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1231 printf_filtered (" in overlay section %s",
1232 section
->the_bfd_section
->name
);
1234 printf_filtered (".\n");
1237 error (_("No symbol \"%s\" in current context."), exp
);
1241 printf_filtered ("Symbol \"");
1242 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_PRINT_NAME (sym
),
1243 current_language
->la_language
, DMGL_ANSI
);
1244 printf_filtered ("\" is ");
1245 val
= SYMBOL_VALUE (sym
);
1246 section
= SYMBOL_OBJ_SECTION (sym
);
1247 gdbarch
= get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
);
1249 switch (SYMBOL_CLASS (sym
))
1252 case LOC_CONST_BYTES
:
1253 printf_filtered ("constant");
1257 printf_filtered ("a label at address ");
1258 load_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1259 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1260 if (section_is_overlay (section
))
1262 load_addr
= overlay_unmapped_address (load_addr
, section
);
1263 printf_filtered (",\n -- loaded at ");
1264 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1265 printf_filtered (" in overlay section %s",
1266 section
->the_bfd_section
->name
);
1271 /* FIXME: cagney/2004-01-26: It should be possible to
1272 unconditionally call the SYMBOL_COMPUTED_OPS method when available.
1273 Unfortunately DWARF 2 stores the frame-base (instead of the
1274 function) location in a function's symbol. Oops! For the
1275 moment enable this when/where applicable. */
1276 SYMBOL_COMPUTED_OPS (sym
)->describe_location (sym
, context_pc
,
1281 /* GDBARCH is the architecture associated with the objfile the symbol
1282 is defined in; the target architecture may be different, and may
1283 provide additional registers. However, we do not know the target
1284 architecture at this point. We assume the objfile architecture
1285 will contain all the standard registers that occur in debug info
1287 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
1289 if (SYMBOL_IS_ARGUMENT (sym
))
1290 printf_filtered (_("an argument in register %s"),
1291 gdbarch_register_name (gdbarch
, regno
));
1293 printf_filtered (_("a variable in register %s"),
1294 gdbarch_register_name (gdbarch
, regno
));
1298 printf_filtered (_("static storage at address "));
1299 load_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1300 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1301 if (section_is_overlay (section
))
1303 load_addr
= overlay_unmapped_address (load_addr
, section
);
1304 printf_filtered (_(",\n -- loaded at "));
1305 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1306 printf_filtered (_(" in overlay section %s"),
1307 section
->the_bfd_section
->name
);
1311 case LOC_REGPARM_ADDR
:
1312 /* Note comment at LOC_REGISTER. */
1313 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
1314 printf_filtered (_("address of an argument in register %s"),
1315 gdbarch_register_name (gdbarch
, regno
));
1319 printf_filtered (_("an argument at offset %ld"), val
);
1323 printf_filtered (_("a local variable at frame offset %ld"), val
);
1327 printf_filtered (_("a reference argument at offset %ld"), val
);
1331 printf_filtered (_("a typedef"));
1335 printf_filtered (_("a function at address "));
1336 load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1337 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1338 if (section_is_overlay (section
))
1340 load_addr
= overlay_unmapped_address (load_addr
, section
);
1341 printf_filtered (_(",\n -- loaded at "));
1342 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1343 printf_filtered (_(" in overlay section %s"),
1344 section
->the_bfd_section
->name
);
1348 case LOC_UNRESOLVED
:
1350 struct minimal_symbol
*msym
;
1352 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
), NULL
, NULL
);
1354 printf_filtered ("unresolved");
1357 section
= SYMBOL_OBJ_SECTION (msym
);
1358 load_addr
= SYMBOL_VALUE_ADDRESS (msym
);
1361 && (section
->the_bfd_section
->flags
& SEC_THREAD_LOCAL
) != 0)
1362 printf_filtered (_("a thread-local variable at offset %s "
1363 "in the thread-local storage for `%s'"),
1364 paddress (gdbarch
, load_addr
),
1365 section
->objfile
->name
);
1368 printf_filtered (_("static storage at address "));
1369 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1370 if (section_is_overlay (section
))
1372 load_addr
= overlay_unmapped_address (load_addr
, section
);
1373 printf_filtered (_(",\n -- loaded at "));
1374 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1375 printf_filtered (_(" in overlay section %s"),
1376 section
->the_bfd_section
->name
);
1383 case LOC_OPTIMIZED_OUT
:
1384 printf_filtered (_("optimized out"));
1388 printf_filtered (_("of unknown (botched) type"));
1391 printf_filtered (".\n");
1396 x_command (char *exp
, int from_tty
)
1398 struct expression
*expr
;
1399 struct format_data fmt
;
1400 struct cleanup
*old_chain
;
1403 fmt
.format
= last_format
? last_format
: 'x';
1404 fmt
.size
= last_size
;
1408 if (exp
&& *exp
== '/')
1411 fmt
= decode_format (&exp
, last_format
, last_size
);
1414 /* If we have an expression, evaluate it and use it as the address. */
1416 if (exp
!= 0 && *exp
!= 0)
1418 expr
= parse_expression (exp
);
1419 /* Cause expression not to be there any more if this command is
1420 repeated with Newline. But don't clobber a user-defined
1421 command's definition. */
1424 old_chain
= make_cleanup (free_current_contents
, &expr
);
1425 val
= evaluate_expression (expr
);
1426 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_REF
)
1427 val
= coerce_ref (val
);
1428 /* In rvalue contexts, such as this, functions are coerced into
1429 pointers to functions. This makes "x/i main" work. */
1430 if (/* last_format == 'i' && */
1431 TYPE_CODE (value_type (val
)) == TYPE_CODE_FUNC
1432 && VALUE_LVAL (val
) == lval_memory
)
1433 next_address
= value_address (val
);
1435 next_address
= value_as_address (val
);
1437 next_gdbarch
= expr
->gdbarch
;
1438 do_cleanups (old_chain
);
1442 error_no_arg (_("starting display address"));
1444 do_examine (fmt
, next_gdbarch
, next_address
);
1446 /* If the examine succeeds, we remember its size and format for next
1447 time. Set last_size to 'b' for strings. */
1448 if (fmt
.format
== 's')
1451 last_size
= fmt
.size
;
1452 last_format
= fmt
.format
;
1454 /* Set a couple of internal variables if appropriate. */
1455 if (last_examine_value
)
1457 /* Make last address examined available to the user as $_. Use
1458 the correct pointer type. */
1459 struct type
*pointer_type
1460 = lookup_pointer_type (value_type (last_examine_value
));
1461 set_internalvar (lookup_internalvar ("_"),
1462 value_from_pointer (pointer_type
,
1463 last_examine_address
));
1465 /* Make contents of last address examined available to the user
1466 as $__. If the last value has not been fetched from memory
1467 then don't fetch it now; instead mark it by voiding the $__
1469 if (value_lazy (last_examine_value
))
1470 clear_internalvar (lookup_internalvar ("__"));
1472 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1477 /* Add an expression to the auto-display chain.
1478 Specify the expression. */
1481 display_command (char *exp
, int from_tty
)
1483 struct format_data fmt
;
1484 struct expression
*expr
;
1485 struct display
*new;
1489 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1491 if (tui_active
&& exp
!= NULL
&& *exp
== '$')
1492 display_it
= (tui_set_layout_for_display_command (exp
) == TUI_FAILURE
);
1506 fmt
= decode_format (&exp
, 0, 0);
1507 if (fmt
.size
&& fmt
.format
== 0)
1509 if (fmt
.format
== 'i' || fmt
.format
== 's')
1520 innermost_block
= NULL
;
1521 expr
= parse_expression (exp
);
1523 new = (struct display
*) xmalloc (sizeof (struct display
));
1525 new->exp_string
= xstrdup (exp
);
1527 new->block
= innermost_block
;
1528 new->pspace
= current_program_space
;
1529 new->next
= display_chain
;
1530 new->number
= ++display_number
;
1533 display_chain
= new;
1535 if (from_tty
&& target_has_execution
)
1536 do_one_display (new);
1543 free_display (struct display
*d
)
1545 xfree (d
->exp_string
);
1550 /* Clear out the display_chain. Done when new symtabs are loaded,
1551 since this invalidates the types stored in many expressions. */
1554 clear_displays (void)
1558 while ((d
= display_chain
) != NULL
)
1560 display_chain
= d
->next
;
1565 /* Delete the auto-display DISPLAY. */
1568 delete_display (struct display
*display
)
1572 gdb_assert (display
!= NULL
);
1574 if (display_chain
== display
)
1575 display_chain
= display
->next
;
1578 if (d
->next
== display
)
1580 d
->next
= display
->next
;
1584 free_display (display
);
1587 /* Delete some values from the auto-display chain.
1588 Specify the element numbers. */
1591 undisplay_command (char *args
, int from_tty
)
1599 if (query (_("Delete all auto-display expressions? ")))
1609 num
= get_number_or_range (&p1
);
1611 warning (_("bad display number at or near '%s'"), p
);
1617 if (d
->number
== num
)
1620 printf_unfiltered (_("No display number %d.\n"), num
);
1630 /* Display a single auto-display.
1631 Do nothing if the display cannot be printed in the current context,
1632 or if the display is disabled. */
1635 do_one_display (struct display
*d
)
1637 int within_current_scope
;
1639 if (d
->enabled_p
== 0)
1642 /* The expression carries the architecture that was used at parse time.
1643 This is a problem if the expression depends on architecture features
1644 (e.g. register numbers), and the current architecture is now different.
1645 For example, a display statement like "display/i $pc" is expected to
1646 display the PC register of the current architecture, not the arch at
1647 the time the display command was given. Therefore, we re-parse the
1648 expression if the current architecture has changed. */
1649 if (d
->exp
!= NULL
&& d
->exp
->gdbarch
!= get_current_arch ())
1658 volatile struct gdb_exception ex
;
1660 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1662 innermost_block
= NULL
;
1663 d
->exp
= parse_expression (d
->exp_string
);
1664 d
->block
= innermost_block
;
1668 /* Can't re-parse the expression. Disable this display item. */
1670 warning (_("Unable to display \"%s\": %s"),
1671 d
->exp_string
, ex
.message
);
1678 if (d
->pspace
== current_program_space
)
1679 within_current_scope
= contained_in (get_selected_block (0), d
->block
);
1681 within_current_scope
= 0;
1684 within_current_scope
= 1;
1685 if (!within_current_scope
)
1688 current_display_number
= d
->number
;
1690 annotate_display_begin ();
1691 printf_filtered ("%d", d
->number
);
1692 annotate_display_number_end ();
1693 printf_filtered (": ");
1699 annotate_display_format ();
1701 printf_filtered ("x/");
1702 if (d
->format
.count
!= 1)
1703 printf_filtered ("%d", d
->format
.count
);
1704 printf_filtered ("%c", d
->format
.format
);
1705 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1706 printf_filtered ("%c", d
->format
.size
);
1707 printf_filtered (" ");
1709 annotate_display_expression ();
1711 puts_filtered (d
->exp_string
);
1712 annotate_display_expression_end ();
1714 if (d
->format
.count
!= 1 || d
->format
.format
== 'i')
1715 printf_filtered ("\n");
1717 printf_filtered (" ");
1719 val
= evaluate_expression (d
->exp
);
1720 addr
= value_as_address (val
);
1721 if (d
->format
.format
== 'i')
1722 addr
= gdbarch_addr_bits_remove (d
->exp
->gdbarch
, addr
);
1724 annotate_display_value ();
1726 do_examine (d
->format
, d
->exp
->gdbarch
, addr
);
1730 struct value_print_options opts
;
1732 annotate_display_format ();
1734 if (d
->format
.format
)
1735 printf_filtered ("/%c ", d
->format
.format
);
1737 annotate_display_expression ();
1739 puts_filtered (d
->exp_string
);
1740 annotate_display_expression_end ();
1742 printf_filtered (" = ");
1744 annotate_display_expression ();
1746 get_formatted_print_options (&opts
, d
->format
.format
);
1747 opts
.raw
= d
->format
.raw
;
1748 print_formatted (evaluate_expression (d
->exp
),
1749 d
->format
.size
, &opts
, gdb_stdout
);
1750 printf_filtered ("\n");
1753 annotate_display_end ();
1755 gdb_flush (gdb_stdout
);
1756 current_display_number
= -1;
1759 /* Display all of the values on the auto-display chain which can be
1760 evaluated in the current scope. */
1767 for (d
= display_chain
; d
; d
= d
->next
)
1771 /* Delete the auto-display which we were in the process of displaying.
1772 This is done when there is an error or a signal. */
1775 disable_display (int num
)
1779 for (d
= display_chain
; d
; d
= d
->next
)
1780 if (d
->number
== num
)
1785 printf_unfiltered (_("No display number %d.\n"), num
);
1789 disable_current_display (void)
1791 if (current_display_number
>= 0)
1793 disable_display (current_display_number
);
1794 fprintf_unfiltered (gdb_stderr
,
1795 _("Disabling display %d to "
1796 "avoid infinite recursion.\n"),
1797 current_display_number
);
1799 current_display_number
= -1;
1803 display_info (char *ignore
, int from_tty
)
1808 printf_unfiltered (_("There are no auto-display expressions now.\n"));
1810 printf_filtered (_("Auto-display expressions now in effect:\n\
1811 Num Enb Expression\n"));
1813 for (d
= display_chain
; d
; d
= d
->next
)
1815 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->enabled_p
]);
1817 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1819 else if (d
->format
.format
)
1820 printf_filtered ("/%c ", d
->format
.format
);
1821 puts_filtered (d
->exp_string
);
1822 if (d
->block
&& !contained_in (get_selected_block (0), d
->block
))
1823 printf_filtered (_(" (cannot be evaluated in the current context)"));
1824 printf_filtered ("\n");
1825 gdb_flush (gdb_stdout
);
1830 enable_display (char *args
, int from_tty
)
1839 for (d
= display_chain
; d
; d
= d
->next
)
1846 while (*p1
>= '0' && *p1
<= '9')
1848 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1849 error (_("Arguments must be display numbers."));
1853 for (d
= display_chain
; d
; d
= d
->next
)
1854 if (d
->number
== num
)
1859 printf_unfiltered (_("No display number %d.\n"), num
);
1862 while (*p
== ' ' || *p
== '\t')
1868 disable_display_command (char *args
, int from_tty
)
1876 for (d
= display_chain
; d
; d
= d
->next
)
1883 while (*p1
>= '0' && *p1
<= '9')
1885 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1886 error (_("Arguments must be display numbers."));
1888 disable_display (atoi (p
));
1891 while (*p
== ' ' || *p
== '\t')
1896 /* display_chain items point to blocks and expressions. Some expressions in
1897 turn may point to symbols.
1898 Both symbols and blocks are obstack_alloc'd on objfile_stack, and are
1899 obstack_free'd when a shared library is unloaded.
1900 Clear pointers that are about to become dangling.
1901 Both .exp and .block fields will be restored next time we need to display
1902 an item by re-parsing .exp_string field in the new execution context. */
1905 clear_dangling_display_expressions (struct so_list
*solib
)
1907 struct objfile
*objfile
= solib
->objfile
;
1910 /* With no symbol file we cannot have a block or expression from it. */
1911 if (objfile
== NULL
)
1913 if (objfile
->separate_debug_objfile_backlink
)
1914 objfile
= objfile
->separate_debug_objfile_backlink
;
1915 gdb_assert (objfile
->pspace
== solib
->pspace
);
1917 for (d
= display_chain
; d
!= NULL
; d
= d
->next
)
1919 if (d
->pspace
!= solib
->pspace
)
1922 if (lookup_objfile_from_block (d
->block
) == objfile
1923 || (d
->exp
&& exp_uses_objfile (d
->exp
, objfile
)))
1933 /* Print the value in stack frame FRAME of a variable specified by a
1934 struct symbol. NAME is the name to print; if NULL then VAR's print
1935 name will be used. STREAM is the ui_file on which to print the
1936 value. INDENT specifies the number of indent levels to print
1937 before printing the variable name. */
1940 print_variable_and_value (const char *name
, struct symbol
*var
,
1941 struct frame_info
*frame
,
1942 struct ui_file
*stream
, int indent
)
1944 volatile struct gdb_exception except
;
1947 name
= SYMBOL_PRINT_NAME (var
);
1949 fprintf_filtered (stream
, "%s%s = ", n_spaces (2 * indent
), name
);
1950 TRY_CATCH (except
, RETURN_MASK_ERROR
)
1953 struct value_print_options opts
;
1955 val
= read_var_value (var
, frame
);
1956 get_user_print_options (&opts
);
1957 common_val_print (val
, stream
, indent
, &opts
, current_language
);
1959 if (except
.reason
< 0)
1960 fprintf_filtered(stream
, "<error reading variable %s (%s)>", name
,
1962 fprintf_filtered (stream
, "\n");
1966 string_printf (char *arg
, struct ui_file
*stream
, printf_callback callback
,
1967 void *loc_v
, void *aexpr_v
)
1971 char *string
= NULL
;
1972 struct value
**val_args
;
1974 char *current_substring
;
1976 int allocated_args
= 20;
1977 struct cleanup
*old_cleanups
;
1978 struct bp_location
*loc
= loc_v
;
1979 struct agent_expr
*aexpr
= aexpr_v
;
1981 val_args
= xmalloc (allocated_args
* sizeof (struct value
*));
1982 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
1985 error_no_arg (_("format-control string and values to print"));
1987 s
= skip_spaces (s
);
1989 /* A format string should follow, enveloped in double quotes. */
1991 error (_("Bad format string, missing '\"'."));
1993 /* Parse the format-control string and copy it into the string STRING,
1994 processing some kinds of escape sequence. */
1996 f
= string
= (char *) alloca (strlen (s
) + 1);
2004 error (_("Bad format string, non-terminated '\"'."));
2037 /* ??? TODO: handle other escape sequences. */
2038 error (_("Unrecognized escape character \\%c in format string."),
2048 /* Skip over " and following space and comma. */
2051 s
= skip_spaces (s
);
2053 if (*s
!= ',' && *s
!= 0)
2054 error (_("Invalid argument syntax"));
2058 s
= skip_spaces (s
);
2060 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2061 substrings
= alloca (strlen (string
) * 2);
2062 current_substring
= substrings
;
2065 /* Now scan the string for %-specs and see what kinds of args they want.
2066 argclass[I] classifies the %-specs so we can give printf_filtered
2067 something of the right size. */
2071 int_arg
, long_arg
, long_long_arg
, ptr_arg
,
2072 string_arg
, wide_string_arg
, wide_char_arg
,
2073 double_arg
, long_double_arg
, decfloat_arg
2075 enum argclass
*argclass
;
2076 enum argclass this_argclass
;
2081 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
2088 int seen_hash
= 0, seen_zero
= 0, lcount
= 0, seen_prec
= 0;
2089 int seen_space
= 0, seen_plus
= 0;
2090 int seen_big_l
= 0, seen_h
= 0, seen_big_h
= 0;
2091 int seen_big_d
= 0, seen_double_big_d
= 0;
2094 /* Check the validity of the format specifier, and work
2095 out what argument it expects. We only accept C89
2096 format strings, with the exception of long long (which
2097 we autoconf for). */
2099 /* Skip over "%%". */
2106 /* The first part of a format specifier is a set of flag
2108 while (strchr ("0-+ #", *f
))
2121 /* The next part of a format specifier is a width. */
2122 while (strchr ("0123456789", *f
))
2125 /* The next part of a format specifier is a precision. */
2130 while (strchr ("0123456789", *f
))
2134 /* The next part of a format specifier is a length modifier. */
2155 /* Decimal32 modifier. */
2161 /* Decimal64 and Decimal128 modifiers. */
2166 /* Check for a Decimal128. */
2170 seen_double_big_d
= 1;
2186 if (seen_space
|| seen_plus
)
2193 this_argclass
= int_arg
;
2194 else if (lcount
== 1)
2195 this_argclass
= long_arg
;
2197 this_argclass
= long_long_arg
;
2204 this_argclass
= lcount
== 0 ? int_arg
: wide_char_arg
;
2205 if (lcount
> 1 || seen_h
|| seen_big_l
)
2207 if (seen_prec
|| seen_zero
|| seen_space
|| seen_plus
)
2212 this_argclass
= ptr_arg
;
2213 if (lcount
|| seen_h
|| seen_big_l
)
2215 if (seen_prec
|| seen_zero
|| seen_space
|| seen_plus
)
2220 this_argclass
= lcount
== 0 ? string_arg
: wide_string_arg
;
2221 if (lcount
> 1 || seen_h
|| seen_big_l
)
2223 if (seen_zero
|| seen_space
|| seen_plus
)
2232 if (seen_big_h
|| seen_big_d
|| seen_double_big_d
)
2233 this_argclass
= decfloat_arg
;
2234 else if (seen_big_l
)
2235 this_argclass
= long_double_arg
;
2237 this_argclass
= double_arg
;
2239 if (lcount
|| seen_h
)
2244 error (_("`*' not supported for precision or width in printf"));
2247 error (_("Format specifier `n' not supported in printf"));
2250 error (_("Incomplete format specifier at end of format string"));
2253 error (_("Unrecognized format specifier '%c' in printf"), *f
);
2257 error (_("Inappropriate modifiers to "
2258 "format specifier '%c' in printf"),
2263 if (lcount
> 1 && USE_PRINTF_I64
)
2265 /* Windows' printf does support long long, but not the usual way.
2266 Convert %lld to %I64d. */
2267 int length_before_ll
= f
- last_arg
- 1 - lcount
;
2269 strncpy (current_substring
, last_arg
, length_before_ll
);
2270 strcpy (current_substring
+ length_before_ll
, "I64");
2271 current_substring
[length_before_ll
+ 3] =
2272 last_arg
[length_before_ll
+ lcount
];
2273 current_substring
+= length_before_ll
+ 4;
2275 else if (this_argclass
== wide_string_arg
2276 || this_argclass
== wide_char_arg
)
2278 /* Convert %ls or %lc to %s. */
2279 int length_before_ls
= f
- last_arg
- 2;
2281 strncpy (current_substring
, last_arg
, length_before_ls
);
2282 strcpy (current_substring
+ length_before_ls
, "s");
2283 current_substring
+= length_before_ls
+ 2;
2287 strncpy (current_substring
, last_arg
, f
- last_arg
);
2288 current_substring
+= f
- last_arg
;
2290 *current_substring
++ = '\0';
2292 argclass
[nargs_wanted
++] = this_argclass
;
2295 /* Now, parse all arguments and evaluate them.
2296 Store the VALUEs in VAL_ARGS. */
2299 current_substring
= substrings
;
2305 if (nargs
== allocated_args
)
2306 val_args
= (struct value
**) xrealloc ((char *) val_args
,
2307 (allocated_args
*= 2)
2308 * sizeof (struct value
*));
2311 if (nargs
>= nargs_wanted
)
2312 error (_("Wrong number of arguments for specified "
2314 callback (current_substring
, &s1
, loc
, aexpr
);
2315 current_substring
+= strlen (current_substring
) + 1;
2318 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2326 callback (last_arg
, NULL
, loc
, aexpr
);
2328 if (nargs
!= nargs_wanted
)
2329 error (_("Wrong number of arguments for specified format-string"));
2334 /* Now actually print them. */
2335 current_substring
= substrings
;
2336 for (i
= 0; i
< nargs
; i
++)
2338 switch (argclass
[i
])
2346 tem
= value_as_address (val_args
[i
]);
2348 /* This is a %s argument. Find the length of the string. */
2354 read_memory (tem
+ j
, &c
, 1);
2359 /* Copy the string contents into a string inside GDB. */
2360 str
= (gdb_byte
*) alloca (j
+ 1);
2362 read_memory (tem
, str
, j
);
2365 fprintf_filtered (stream
, current_substring
, (char *) str
);
2368 case wide_string_arg
:
2373 struct gdbarch
*gdbarch
2374 = get_type_arch (value_type (val_args
[i
]));
2375 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2376 struct type
*wctype
= lookup_typename (current_language
, gdbarch
,
2377 "wchar_t", NULL
, 0);
2378 int wcwidth
= TYPE_LENGTH (wctype
);
2379 gdb_byte
*buf
= alloca (wcwidth
);
2380 struct obstack output
;
2381 struct cleanup
*inner_cleanup
;
2383 tem
= value_as_address (val_args
[i
]);
2385 /* This is a %s argument. Find the length of the string. */
2386 for (j
= 0;; j
+= wcwidth
)
2389 read_memory (tem
+ j
, buf
, wcwidth
);
2390 if (extract_unsigned_integer (buf
, wcwidth
, byte_order
) == 0)
2394 /* Copy the string contents into a string inside GDB. */
2395 str
= (gdb_byte
*) alloca (j
+ wcwidth
);
2397 read_memory (tem
, str
, j
);
2398 memset (&str
[j
], 0, wcwidth
);
2400 obstack_init (&output
);
2401 inner_cleanup
= make_cleanup_obstack_free (&output
);
2403 convert_between_encodings (target_wide_charset (gdbarch
),
2406 &output
, translit_char
);
2407 obstack_grow_str0 (&output
, "");
2409 fprintf_filtered (stream
, current_substring
,
2410 obstack_base (&output
));
2411 do_cleanups (inner_cleanup
);
2416 struct gdbarch
*gdbarch
2417 = get_type_arch (value_type (val_args
[i
]));
2418 struct type
*wctype
= lookup_typename (current_language
, gdbarch
,
2419 "wchar_t", NULL
, 0);
2420 struct type
*valtype
;
2421 struct obstack output
;
2422 struct cleanup
*inner_cleanup
;
2423 const gdb_byte
*bytes
;
2425 valtype
= value_type (val_args
[i
]);
2426 if (TYPE_LENGTH (valtype
) != TYPE_LENGTH (wctype
)
2427 || TYPE_CODE (valtype
) != TYPE_CODE_INT
)
2428 error (_("expected wchar_t argument for %%lc"));
2430 bytes
= value_contents (val_args
[i
]);
2432 obstack_init (&output
);
2433 inner_cleanup
= make_cleanup_obstack_free (&output
);
2435 convert_between_encodings (target_wide_charset (gdbarch
),
2437 bytes
, TYPE_LENGTH (valtype
),
2438 TYPE_LENGTH (valtype
),
2439 &output
, translit_char
);
2440 obstack_grow_str0 (&output
, "");
2442 fprintf_filtered (stream
, current_substring
,
2443 obstack_base (&output
));
2444 do_cleanups (inner_cleanup
);
2449 struct type
*type
= value_type (val_args
[i
]);
2453 /* If format string wants a float, unchecked-convert the value
2454 to floating point of the same size. */
2455 type
= float_type_from_length (type
);
2456 val
= unpack_double (type
, value_contents (val_args
[i
]), &inv
);
2458 error (_("Invalid floating value found in program."));
2460 fprintf_filtered (stream
, current_substring
, (double) val
);
2463 case long_double_arg
:
2464 #ifdef HAVE_LONG_DOUBLE
2466 struct type
*type
= value_type (val_args
[i
]);
2470 /* If format string wants a float, unchecked-convert the value
2471 to floating point of the same size. */
2472 type
= float_type_from_length (type
);
2473 val
= unpack_double (type
, value_contents (val_args
[i
]), &inv
);
2475 error (_("Invalid floating value found in program."));
2477 fprintf_filtered (stream
, current_substring
,
2482 error (_("long double not supported in printf"));
2485 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2487 long long val
= value_as_long (val_args
[i
]);
2489 fprintf_filtered (stream
, current_substring
, val
);
2493 error (_("long long not supported in printf"));
2497 int val
= value_as_long (val_args
[i
]);
2499 fprintf_filtered (stream
, current_substring
, val
);
2504 long val
= value_as_long (val_args
[i
]);
2506 fprintf_filtered (stream
, current_substring
, val
);
2510 /* Handles decimal floating values. */
2513 const gdb_byte
*param_ptr
= value_contents (val_args
[i
]);
2515 #if defined (PRINTF_HAS_DECFLOAT)
2516 /* If we have native support for Decimal floating
2517 printing, handle it here. */
2518 fprintf_filtered (stream
, current_substring
, param_ptr
);
2521 /* As a workaround until vasprintf has native support for DFP
2522 we convert the DFP values to string and print them using
2523 the %s format specifier. */
2526 int nnull_chars
= 0;
2528 /* Parameter data. */
2529 struct type
*param_type
= value_type (val_args
[i
]);
2530 unsigned int param_len
= TYPE_LENGTH (param_type
);
2531 struct gdbarch
*gdbarch
= get_type_arch (param_type
);
2532 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2534 /* DFP output data. */
2535 struct value
*dfp_value
= NULL
;
2539 struct type
*dfp_type
= NULL
;
2540 char decstr
[MAX_DECIMAL_STRING
];
2542 /* Points to the end of the string so that we can go back
2543 and check for DFP length modifiers. */
2544 eos
= current_substring
+ strlen (current_substring
);
2546 /* Look for the float/double format specifier. */
2547 while (*eos
!= 'f' && *eos
!= 'e' && *eos
!= 'E'
2548 && *eos
!= 'g' && *eos
!= 'G')
2553 /* Search for the '%' char and extract the size and type of
2554 the output decimal value based on its modifiers
2555 (%Hf, %Df, %DDf). */
2556 while (*--sos
!= '%')
2561 dfp_type
= builtin_type (gdbarch
)->builtin_decfloat
;
2563 else if (*sos
== 'D' && *(sos
- 1) == 'D')
2566 dfp_type
= builtin_type (gdbarch
)->builtin_declong
;
2572 dfp_type
= builtin_type (gdbarch
)->builtin_decdouble
;
2576 /* Replace %Hf, %Df and %DDf with %s's. */
2579 /* Go through the whole format string and pull the correct
2580 number of chars back to compensate for the change in the
2581 format specifier. */
2582 while (nnull_chars
< nargs
- i
)
2590 /* Conversion between different DFP types. */
2591 if (TYPE_CODE (param_type
) == TYPE_CODE_DECFLOAT
)
2592 decimal_convert (param_ptr
, param_len
, byte_order
,
2593 dec
, dfp_len
, byte_order
);
2595 /* If this is a non-trivial conversion, just output 0.
2596 A correct converted value can be displayed by explicitly
2597 casting to a DFP type. */
2598 decimal_from_string (dec
, dfp_len
, byte_order
, "0");
2600 dfp_value
= value_from_decfloat (dfp_type
, dec
);
2602 dfp_ptr
= (gdb_byte
*) value_contents (dfp_value
);
2604 decimal_to_string (dfp_ptr
, dfp_len
, byte_order
, decstr
);
2606 /* Print the DFP value. */
2607 fprintf_filtered (stream
, current_substring
, decstr
);
2615 /* We avoid the host's %p because pointers are too
2616 likely to be the wrong size. The only interesting
2617 modifier for %p is a width; extract that, and then
2618 handle %p as glibc would: %#x or a literal "(nil)". */
2620 char *p
, *fmt
, *fmt_p
;
2621 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2622 long long val
= value_as_long (val_args
[i
]);
2624 long val
= value_as_long (val_args
[i
]);
2627 fmt
= alloca (strlen (current_substring
) + 5);
2629 /* Copy up to the leading %. */
2630 p
= current_substring
;
2634 int is_percent
= (*p
== '%');
2649 /* Copy any width. */
2650 while (*p
>= '0' && *p
< '9')
2653 gdb_assert (*p
== 'p' && *(p
+ 1) == '\0');
2656 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2662 fprintf_filtered (stream
, fmt
, val
);
2668 fprintf_filtered (stream
, fmt
, "(nil)");
2674 internal_error (__FILE__
, __LINE__
,
2675 _("failed internal consistency check"));
2677 /* Skip to the next substring. */
2678 current_substring
+= strlen (current_substring
) + 1;
2680 /* Print the portion of the format string after the last argument.
2681 Note that this will not include any ordinary %-specs, but it
2682 might include "%%". That is why we use printf_filtered and not
2683 puts_filtered here. Also, we pass a dummy argument because
2684 some platforms have modified GCC to include -Wformat-security
2685 by default, which will warn here if there is no argument. */
2686 fprintf_filtered (stream
, last_arg
, 0);
2690 do_cleanups (old_cleanups
);
2693 /* Implement the "printf" command. */
2696 printf_command (char *arg
, int from_tty
)
2698 string_printf (arg
, gdb_stdout
, NULL
, NULL
, NULL
);
2701 /* Implement the "eval" command. */
2704 eval_command (char *arg
, int from_tty
)
2706 struct ui_file
*ui_out
= mem_fileopen ();
2707 struct cleanup
*cleanups
= make_cleanup_ui_file_delete (ui_out
);
2710 string_printf (arg
, ui_out
, NULL
, NULL
, NULL
);
2712 expanded
= ui_file_xstrdup (ui_out
, NULL
);
2713 make_cleanup (xfree
, expanded
);
2715 execute_command (expanded
, from_tty
);
2717 do_cleanups (cleanups
);
2721 _initialize_printcmd (void)
2723 struct cmd_list_element
*c
;
2725 current_display_number
= -1;
2727 observer_attach_solib_unloaded (clear_dangling_display_expressions
);
2729 add_info ("address", address_info
,
2730 _("Describe where symbol SYM is stored."));
2732 add_info ("symbol", sym_info
, _("\
2733 Describe what symbol is at location ADDR.\n\
2734 Only for symbols with fixed locations (global or static scope)."));
2736 add_com ("x", class_vars
, x_command
, _("\
2737 Examine memory: x/FMT ADDRESS.\n\
2738 ADDRESS is an expression for the memory address to examine.\n\
2739 FMT is a repeat count followed by a format letter and a size letter.\n\
2740 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2741 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\
2742 Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2743 The specified number of objects of the specified size are printed\n\
2744 according to the format.\n\n\
2745 Defaults for format and size letters are those previously used.\n\
2746 Default count is 1. Default address is following last thing printed\n\
2747 with this command or \"print\"."));
2750 add_com ("whereis", class_vars
, whereis_command
,
2751 _("Print line number and file of definition of variable."));
2754 add_info ("display", display_info
, _("\
2755 Expressions to display when program stops, with code numbers."));
2757 add_cmd ("undisplay", class_vars
, undisplay_command
, _("\
2758 Cancel some expressions to be displayed when program stops.\n\
2759 Arguments are the code numbers of the expressions to stop displaying.\n\
2760 No argument means cancel all automatic-display expressions.\n\
2761 \"delete display\" has the same effect as this command.\n\
2762 Do \"info display\" to see current list of code numbers."),
2765 add_com ("display", class_vars
, display_command
, _("\
2766 Print value of expression EXP each time the program stops.\n\
2767 /FMT may be used before EXP as in the \"print\" command.\n\
2768 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2769 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2770 and examining is done as in the \"x\" command.\n\n\
2771 With no argument, display all currently requested auto-display expressions.\n\
2772 Use \"undisplay\" to cancel display requests previously made."));
2774 add_cmd ("display", class_vars
, enable_display
, _("\
2775 Enable some expressions to be displayed when program stops.\n\
2776 Arguments are the code numbers of the expressions to resume displaying.\n\
2777 No argument means enable all automatic-display expressions.\n\
2778 Do \"info display\" to see current list of code numbers."), &enablelist
);
2780 add_cmd ("display", class_vars
, disable_display_command
, _("\
2781 Disable some expressions to be displayed when program stops.\n\
2782 Arguments are the code numbers of the expressions to stop displaying.\n\
2783 No argument means disable all automatic-display expressions.\n\
2784 Do \"info display\" to see current list of code numbers."), &disablelist
);
2786 add_cmd ("display", class_vars
, undisplay_command
, _("\
2787 Cancel some expressions to be displayed when program stops.\n\
2788 Arguments are the code numbers of the expressions to stop displaying.\n\
2789 No argument means cancel all automatic-display expressions.\n\
2790 Do \"info display\" to see current list of code numbers."), &deletelist
);
2792 add_com ("printf", class_vars
, printf_command
, _("\
2793 printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2794 This is useful for formatted output in user-defined commands."));
2796 add_com ("output", class_vars
, output_command
, _("\
2797 Like \"print\" but don't put in value history and don't print newline.\n\
2798 This is useful in user-defined commands."));
2800 add_prefix_cmd ("set", class_vars
, set_command
, _("\
2801 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2802 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2803 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2804 with $), a register (a few standard names starting with $), or an actual\n\
2805 variable in the program being debugged. EXP is any valid expression.\n\
2806 Use \"set variable\" for variables with names identical to set subcommands.\n\
2808 With a subcommand, this command modifies parts of the gdb environment.\n\
2809 You can see these environment settings with the \"show\" command."),
2810 &setlist
, "set ", 1, &cmdlist
);
2812 add_com ("assign", class_vars
, set_command
, _("\
2813 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2814 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2815 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2816 with $), a register (a few standard names starting with $), or an actual\n\
2817 variable in the program being debugged. EXP is any valid expression.\n\
2818 Use \"set variable\" for variables with names identical to set subcommands.\n\
2819 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2820 You can see these environment settings with the \"show\" command."));
2822 /* "call" is the same as "set", but handy for dbx users to call fns. */
2823 c
= add_com ("call", class_vars
, call_command
, _("\
2824 Call a function in the program.\n\
2825 The argument is the function name and arguments, in the notation of the\n\
2826 current working language. The result is printed and saved in the value\n\
2827 history, if it is not void."));
2828 set_cmd_completer (c
, expression_completer
);
2830 add_cmd ("variable", class_vars
, set_command
, _("\
2831 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2832 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2833 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2834 with $), a register (a few standard names starting with $), or an actual\n\
2835 variable in the program being debugged. EXP is any valid expression.\n\
2836 This may usually be abbreviated to simply \"set\"."),
2839 c
= add_com ("print", class_vars
, print_command
, _("\
2840 Print value of expression EXP.\n\
2841 Variables accessible are those of the lexical environment of the selected\n\
2842 stack frame, plus all those whose scope is global or an entire file.\n\
2844 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2845 $$NUM refers to NUM'th value back from the last one.\n\
2846 Names starting with $ refer to registers (with the values they would have\n\
2847 if the program were to return to the stack frame now selected, restoring\n\
2848 all registers saved by frames farther in) or else to debugger\n\
2849 \"convenience\" variables (any such name not a known register).\n\
2850 Use assignment expressions to give values to convenience variables.\n\
2852 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2853 @ is a binary operator for treating consecutive data objects\n\
2854 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2855 element is FOO, whose second element is stored in the space following\n\
2856 where FOO is stored, etc. FOO must be an expression whose value\n\
2857 resides in memory.\n\
2859 EXP may be preceded with /FMT, where FMT is a format letter\n\
2860 but no count or size letter (see \"x\" command)."));
2861 set_cmd_completer (c
, expression_completer
);
2862 add_com_alias ("p", "print", class_vars
, 1);
2864 c
= add_com ("inspect", class_vars
, inspect_command
, _("\
2865 Same as \"print\" command, except that if you are running in the epoch\n\
2866 environment, the value is printed in its own window."));
2867 set_cmd_completer (c
, expression_completer
);
2869 add_setshow_uinteger_cmd ("max-symbolic-offset", no_class
,
2870 &max_symbolic_offset
, _("\
2871 Set the largest offset that will be printed in <symbol+1234> form."), _("\
2872 Show the largest offset that will be printed in <symbol+1234> form."), NULL
,
2874 show_max_symbolic_offset
,
2875 &setprintlist
, &showprintlist
);
2876 add_setshow_boolean_cmd ("symbol-filename", no_class
,
2877 &print_symbol_filename
, _("\
2878 Set printing of source filename and line number with <symbol>."), _("\
2879 Show printing of source filename and line number with <symbol>."), NULL
,
2881 show_print_symbol_filename
,
2882 &setprintlist
, &showprintlist
);
2884 add_com ("eval", no_class
, eval_command
, _("\
2885 Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\
2886 a command line, and call it."));