1 /* Print values for GNU debugger GDB.
3 Copyright (C) 1986-2015 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "expression.h"
30 #include "breakpoint.h"
32 #include "gdb-demangle.h"
35 #include "symfile.h" /* for overlay functions */
36 #include "objfiles.h" /* ditto */
37 #include "completer.h" /* for completion functions */
44 #include "parser-defs.h"
46 #include "arch-utils.h"
47 #include "cli/cli-utils.h"
52 #include "tui/tui.h" /* For tui_active et al. */
55 /* Last specified output format. */
57 static char last_format
= 0;
59 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
61 static char last_size
= 'w';
63 /* Default address to examine next, and associated architecture. */
65 static struct gdbarch
*next_gdbarch
;
66 static CORE_ADDR next_address
;
68 /* Number of delay instructions following current disassembled insn. */
70 static int branch_delay_insns
;
72 /* Last address examined. */
74 static CORE_ADDR last_examine_address
;
76 /* Contents of last address examined.
77 This is not valid past the end of the `x' command! */
79 static struct value
*last_examine_value
;
81 /* Largest offset between a symbolic value and an address, that will be
82 printed as `0x1234 <symbol+offset>'. */
84 static unsigned int max_symbolic_offset
= UINT_MAX
;
86 show_max_symbolic_offset (struct ui_file
*file
, int from_tty
,
87 struct cmd_list_element
*c
, const char *value
)
89 fprintf_filtered (file
,
90 _("The largest offset that will be "
91 "printed in <symbol+1234> form is %s.\n"),
95 /* Append the source filename and linenumber of the symbol when
96 printing a symbolic value as `<symbol at filename:linenum>' if set. */
97 static int print_symbol_filename
= 0;
99 show_print_symbol_filename (struct ui_file
*file
, int from_tty
,
100 struct cmd_list_element
*c
, const char *value
)
102 fprintf_filtered (file
, _("Printing of source filename and "
103 "line number with <symbol> is %s.\n"),
107 /* Number of auto-display expression currently being displayed.
108 So that we can disable it if we get a signal within it.
109 -1 when not doing one. */
111 static int current_display_number
;
115 /* Chain link to next auto-display item. */
116 struct display
*next
;
118 /* The expression as the user typed it. */
121 /* Expression to be evaluated and displayed. */
122 struct expression
*exp
;
124 /* Item number of this auto-display item. */
127 /* Display format specified. */
128 struct format_data format
;
130 /* Program space associated with `block'. */
131 struct program_space
*pspace
;
133 /* Innermost block required by this expression when evaluated. */
134 const struct block
*block
;
136 /* Status of this display (enabled or disabled). */
140 /* Chain of expressions whose values should be displayed
141 automatically each time the program stops. */
143 static struct display
*display_chain
;
145 static int display_number
;
147 /* Walk the following statement or block through all displays.
148 ALL_DISPLAYS_SAFE does so even if the statement deletes the current
151 #define ALL_DISPLAYS(B) \
152 for (B = display_chain; B; B = B->next)
154 #define ALL_DISPLAYS_SAFE(B,TMP) \
155 for (B = display_chain; \
156 B ? (TMP = B->next, 1): 0; \
159 /* Prototypes for exported functions. */
161 void _initialize_printcmd (void);
163 /* Prototypes for local functions. */
165 static void do_one_display (struct display
*);
168 /* Decode a format specification. *STRING_PTR should point to it.
169 OFORMAT and OSIZE are used as defaults for the format and size
170 if none are given in the format specification.
171 If OSIZE is zero, then the size field of the returned value
172 should be set only if a size is explicitly specified by the
174 The structure returned describes all the data
175 found in the specification. In addition, *STRING_PTR is advanced
176 past the specification and past all whitespace following it. */
178 static struct format_data
179 decode_format (const char **string_ptr
, int oformat
, int osize
)
181 struct format_data val
;
182 const char *p
= *string_ptr
;
189 if (*p
>= '0' && *p
<= '9')
190 val
.count
= atoi (p
);
191 while (*p
>= '0' && *p
<= '9')
194 /* Now process size or format letters that follow. */
198 if (*p
== 'b' || *p
== 'h' || *p
== 'w' || *p
== 'g')
205 else if (*p
>= 'a' && *p
<= 'z')
211 while (*p
== ' ' || *p
== '\t')
215 /* Set defaults for format and size if not specified. */
216 if (val
.format
== '?')
220 /* Neither has been specified. */
221 val
.format
= oformat
;
225 /* If a size is specified, any format makes a reasonable
226 default except 'i'. */
227 val
.format
= oformat
== 'i' ? 'x' : oformat
;
229 else if (val
.size
== '?')
233 /* Pick the appropriate size for an address. This is deferred
234 until do_examine when we know the actual architecture to use.
235 A special size value of 'a' is used to indicate this case. */
236 val
.size
= osize
? 'a' : osize
;
239 /* Floating point has to be word or giantword. */
240 if (osize
== 'w' || osize
== 'g')
243 /* Default it to giantword if the last used size is not
245 val
.size
= osize
? 'g' : osize
;
248 /* Characters default to one byte. */
249 val
.size
= osize
? 'b' : osize
;
252 /* Display strings with byte size chars unless explicitly
258 /* The default is the size most recently specified. */
265 /* Print value VAL on stream according to OPTIONS.
266 Do not end with a newline.
267 SIZE is the letter for the size of datum being printed.
268 This is used to pad hex numbers so they line up. SIZE is 0
269 for print / output and set for examine. */
272 print_formatted (struct value
*val
, int size
,
273 const struct value_print_options
*options
,
274 struct ui_file
*stream
)
276 struct type
*type
= check_typedef (value_type (val
));
277 int len
= TYPE_LENGTH (type
);
279 if (VALUE_LVAL (val
) == lval_memory
)
280 next_address
= value_address (val
) + len
;
284 switch (options
->format
)
288 struct type
*elttype
= value_type (val
);
290 next_address
= (value_address (val
)
291 + val_print_string (elttype
, NULL
,
292 value_address (val
), -1,
293 stream
, options
) * len
);
298 /* We often wrap here if there are long symbolic names. */
300 next_address
= (value_address (val
)
301 + gdb_print_insn (get_type_arch (type
),
302 value_address (val
), stream
,
303 &branch_delay_insns
));
308 if (options
->format
== 0 || options
->format
== 's'
309 || TYPE_CODE (type
) == TYPE_CODE_REF
310 || TYPE_CODE (type
) == TYPE_CODE_ARRAY
311 || TYPE_CODE (type
) == TYPE_CODE_STRING
312 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
313 || TYPE_CODE (type
) == TYPE_CODE_UNION
314 || TYPE_CODE (type
) == TYPE_CODE_NAMESPACE
)
315 value_print (val
, stream
, options
);
317 /* User specified format, so don't look to the type to tell us
319 val_print_scalar_formatted (type
,
320 value_contents_for_printing (val
),
321 value_embedded_offset (val
),
323 options
, size
, stream
);
326 /* Return builtin floating point type of same length as TYPE.
327 If no such type is found, return TYPE itself. */
329 float_type_from_length (struct type
*type
)
331 struct gdbarch
*gdbarch
= get_type_arch (type
);
332 const struct builtin_type
*builtin
= builtin_type (gdbarch
);
334 if (TYPE_LENGTH (type
) == TYPE_LENGTH (builtin
->builtin_float
))
335 type
= builtin
->builtin_float
;
336 else if (TYPE_LENGTH (type
) == TYPE_LENGTH (builtin
->builtin_double
))
337 type
= builtin
->builtin_double
;
338 else if (TYPE_LENGTH (type
) == TYPE_LENGTH (builtin
->builtin_long_double
))
339 type
= builtin
->builtin_long_double
;
344 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
345 according to OPTIONS and SIZE on STREAM. Formats s and i are not
346 supported at this level. */
349 print_scalar_formatted (const void *valaddr
, struct type
*type
,
350 const struct value_print_options
*options
,
351 int size
, struct ui_file
*stream
)
353 struct gdbarch
*gdbarch
= get_type_arch (type
);
354 LONGEST val_long
= 0;
355 unsigned int len
= TYPE_LENGTH (type
);
356 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
358 /* String printing should go through val_print_scalar_formatted. */
359 gdb_assert (options
->format
!= 's');
361 if (len
> sizeof(LONGEST
) &&
362 (TYPE_CODE (type
) == TYPE_CODE_INT
363 || TYPE_CODE (type
) == TYPE_CODE_ENUM
))
365 switch (options
->format
)
368 print_octal_chars (stream
, valaddr
, len
, byte_order
);
372 print_decimal_chars (stream
, valaddr
, len
, byte_order
);
375 print_binary_chars (stream
, valaddr
, len
, byte_order
);
378 print_hex_chars (stream
, valaddr
, len
, byte_order
);
381 print_char_chars (stream
, type
, valaddr
, len
, byte_order
);
388 if (options
->format
!= 'f')
389 val_long
= unpack_long (type
, valaddr
);
391 /* If the value is a pointer, and pointers and addresses are not the
392 same, then at this point, the value's length (in target bytes) is
393 gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
394 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
395 len
= gdbarch_addr_bit (gdbarch
) / TARGET_CHAR_BIT
;
397 /* If we are printing it as unsigned, truncate it in case it is actually
398 a negative signed value (e.g. "print/u (short)-1" should print 65535
399 (if shorts are 16 bits) instead of 4294967295). */
400 if (options
->format
!= 'd' || TYPE_UNSIGNED (type
))
402 if (len
< sizeof (LONGEST
))
403 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
406 switch (options
->format
)
411 /* No size specified, like in print. Print varying # of digits. */
412 print_longest (stream
, 'x', 1, val_long
);
421 print_longest (stream
, size
, 1, val_long
);
424 error (_("Undefined output size \"%c\"."), size
);
429 print_longest (stream
, 'd', 1, val_long
);
433 print_longest (stream
, 'u', 0, val_long
);
438 print_longest (stream
, 'o', 1, val_long
);
440 fprintf_filtered (stream
, "0");
445 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
447 print_address (gdbarch
, addr
, stream
);
453 struct value_print_options opts
= *options
;
456 if (TYPE_UNSIGNED (type
))
457 type
= builtin_type (gdbarch
)->builtin_true_unsigned_char
;
459 type
= builtin_type (gdbarch
)->builtin_true_char
;
461 value_print (value_from_longest (type
, val_long
), stream
, &opts
);
466 type
= float_type_from_length (type
);
467 print_floating (valaddr
, type
, stream
);
471 internal_error (__FILE__
, __LINE__
,
472 _("failed internal consistency check"));
475 /* Binary; 't' stands for "two". */
477 char bits
[8 * (sizeof val_long
) + 1];
478 char buf
[8 * (sizeof val_long
) + 32];
483 width
= 8 * (sizeof val_long
);
500 error (_("Undefined output size \"%c\"."), size
);
506 bits
[width
] = (val_long
& 1) ? '1' : '0';
511 while (*cp
&& *cp
== '0')
516 strncpy (buf
, cp
, sizeof (bits
));
517 fputs_filtered (buf
, stream
);
522 print_hex_chars (stream
, valaddr
, len
, byte_order
);
526 error (_("Undefined output format \"%c\"."), options
->format
);
530 /* Specify default address for `x' command.
531 The `info lines' command uses this. */
534 set_next_address (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
536 struct type
*ptr_type
= builtin_type (gdbarch
)->builtin_data_ptr
;
538 next_gdbarch
= gdbarch
;
541 /* Make address available to the user as $_. */
542 set_internalvar (lookup_internalvar ("_"),
543 value_from_pointer (ptr_type
, addr
));
546 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
547 after LEADIN. Print nothing if no symbolic name is found nearby.
548 Optionally also print source file and line number, if available.
549 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
550 or to interpret it as a possible C++ name and convert it back to source
551 form. However note that DO_DEMANGLE can be overridden by the specific
552 settings of the demangle and asm_demangle variables. Returns
553 non-zero if anything was printed; zero otherwise. */
556 print_address_symbolic (struct gdbarch
*gdbarch
, CORE_ADDR addr
,
557 struct ui_file
*stream
,
558 int do_demangle
, char *leadin
)
561 char *filename
= NULL
;
566 /* Throw away both name and filename. */
567 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
568 make_cleanup (free_current_contents
, &filename
);
570 if (build_address_symbolic (gdbarch
, addr
, do_demangle
, &name
, &offset
,
571 &filename
, &line
, &unmapped
))
573 do_cleanups (cleanup_chain
);
577 fputs_filtered (leadin
, stream
);
579 fputs_filtered ("<*", stream
);
581 fputs_filtered ("<", stream
);
582 fputs_filtered (name
, stream
);
584 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
586 /* Append source filename and line number if desired. Give specific
587 line # of this addr, if we have it; else line # of the nearest symbol. */
588 if (print_symbol_filename
&& filename
!= NULL
)
591 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
593 fprintf_filtered (stream
, " in %s", filename
);
596 fputs_filtered ("*>", stream
);
598 fputs_filtered (">", stream
);
600 do_cleanups (cleanup_chain
);
604 /* Given an address ADDR return all the elements needed to print the
605 address in a symbolic form. NAME can be mangled or not depending
606 on DO_DEMANGLE (and also on the asm_demangle global variable,
607 manipulated via ''set print asm-demangle''). Return 0 in case of
608 success, when all the info in the OUT paramters is valid. Return 1
611 build_address_symbolic (struct gdbarch
*gdbarch
,
612 CORE_ADDR addr
, /* IN */
613 int do_demangle
, /* IN */
614 char **name
, /* OUT */
615 int *offset
, /* OUT */
616 char **filename
, /* OUT */
618 int *unmapped
) /* OUT */
620 struct bound_minimal_symbol msymbol
;
621 struct symbol
*symbol
;
622 CORE_ADDR name_location
= 0;
623 struct obj_section
*section
= NULL
;
624 const char *name_temp
= "";
626 /* Let's say it is mapped (not unmapped). */
629 /* Determine if the address is in an overlay, and whether it is
631 if (overlay_debugging
)
633 section
= find_pc_overlay (addr
);
634 if (pc_in_unmapped_range (addr
, section
))
637 addr
= overlay_mapped_address (addr
, section
);
641 /* First try to find the address in the symbol table, then
642 in the minsyms. Take the closest one. */
644 /* This is defective in the sense that it only finds text symbols. So
645 really this is kind of pointless--we should make sure that the
646 minimal symbols have everything we need (by changing that we could
647 save some memory, but for many debug format--ELF/DWARF or
648 anything/stabs--it would be inconvenient to eliminate those minimal
650 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
651 symbol
= find_pc_sect_function (addr
, section
);
655 /* If this is a function (i.e. a code address), strip out any
656 non-address bits. For instance, display a pointer to the
657 first instruction of a Thumb function as <function>; the
658 second instruction will be <function+2>, even though the
659 pointer is <function+3>. This matches the ISA behavior. */
660 addr
= gdbarch_addr_bits_remove (gdbarch
, addr
);
662 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
663 if (do_demangle
|| asm_demangle
)
664 name_temp
= SYMBOL_PRINT_NAME (symbol
);
666 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
669 if (msymbol
.minsym
!= NULL
670 && MSYMBOL_HAS_SIZE (msymbol
.minsym
)
671 && MSYMBOL_SIZE (msymbol
.minsym
) == 0
672 && MSYMBOL_TYPE (msymbol
.minsym
) != mst_text
673 && MSYMBOL_TYPE (msymbol
.minsym
) != mst_text_gnu_ifunc
674 && MSYMBOL_TYPE (msymbol
.minsym
) != mst_file_text
)
675 msymbol
.minsym
= NULL
;
677 if (msymbol
.minsym
!= NULL
)
679 if (BMSYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
681 /* If this is a function (i.e. a code address), strip out any
682 non-address bits. For instance, display a pointer to the
683 first instruction of a Thumb function as <function>; the
684 second instruction will be <function+2>, even though the
685 pointer is <function+3>. This matches the ISA behavior. */
686 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_text
687 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_text_gnu_ifunc
688 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_text
689 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
690 addr
= gdbarch_addr_bits_remove (gdbarch
, addr
);
692 /* The msymbol is closer to the address than the symbol;
693 use the msymbol instead. */
695 name_location
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
696 if (do_demangle
|| asm_demangle
)
697 name_temp
= MSYMBOL_PRINT_NAME (msymbol
.minsym
);
699 name_temp
= MSYMBOL_LINKAGE_NAME (msymbol
.minsym
);
702 if (symbol
== NULL
&& msymbol
.minsym
== NULL
)
705 /* If the nearest symbol is too far away, don't print anything symbolic. */
707 /* For when CORE_ADDR is larger than unsigned int, we do math in
708 CORE_ADDR. But when we detect unsigned wraparound in the
709 CORE_ADDR math, we ignore this test and print the offset,
710 because addr+max_symbolic_offset has wrapped through the end
711 of the address space back to the beginning, giving bogus comparison. */
712 if (addr
> name_location
+ max_symbolic_offset
713 && name_location
+ max_symbolic_offset
> name_location
)
716 *offset
= addr
- name_location
;
718 *name
= xstrdup (name_temp
);
720 if (print_symbol_filename
)
722 struct symtab_and_line sal
;
724 sal
= find_pc_sect_line (addr
, section
, 0);
728 *filename
= xstrdup (symtab_to_filename_for_display (sal
.symtab
));
736 /* Print address ADDR symbolically on STREAM.
737 First print it as a number. Then perhaps print
738 <SYMBOL + OFFSET> after the number. */
741 print_address (struct gdbarch
*gdbarch
,
742 CORE_ADDR addr
, struct ui_file
*stream
)
744 fputs_filtered (paddress (gdbarch
, addr
), stream
);
745 print_address_symbolic (gdbarch
, addr
, stream
, asm_demangle
, " ");
748 /* Return a prefix for instruction address:
749 "=> " for current instruction, else " ". */
752 pc_prefix (CORE_ADDR addr
)
754 if (has_stack_frames ())
756 struct frame_info
*frame
;
759 frame
= get_selected_frame (NULL
);
760 if (get_frame_pc_if_available (frame
, &pc
) && pc
== addr
)
766 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
767 controls whether to print the symbolic name "raw" or demangled.
768 Return non-zero if anything was printed; zero otherwise. */
771 print_address_demangle (const struct value_print_options
*opts
,
772 struct gdbarch
*gdbarch
, CORE_ADDR addr
,
773 struct ui_file
*stream
, int do_demangle
)
775 if (opts
->addressprint
)
777 fputs_filtered (paddress (gdbarch
, addr
), stream
);
778 print_address_symbolic (gdbarch
, addr
, stream
, do_demangle
, " ");
782 return print_address_symbolic (gdbarch
, addr
, stream
, do_demangle
, "");
788 /* Examine data at address ADDR in format FMT.
789 Fetch it from memory and print on gdb_stdout. */
792 do_examine (struct format_data fmt
, struct gdbarch
*gdbarch
, CORE_ADDR addr
)
797 struct type
*val_type
= NULL
;
800 struct value_print_options opts
;
805 next_gdbarch
= gdbarch
;
808 /* Instruction format implies fetch single bytes
809 regardless of the specified size.
810 The case of strings is handled in decode_format, only explicit
811 size operator are not changed to 'b'. */
817 /* Pick the appropriate size for an address. */
818 if (gdbarch_ptr_bit (next_gdbarch
) == 64)
820 else if (gdbarch_ptr_bit (next_gdbarch
) == 32)
822 else if (gdbarch_ptr_bit (next_gdbarch
) == 16)
825 /* Bad value for gdbarch_ptr_bit. */
826 internal_error (__FILE__
, __LINE__
,
827 _("failed internal consistency check"));
831 val_type
= builtin_type (next_gdbarch
)->builtin_int8
;
832 else if (size
== 'h')
833 val_type
= builtin_type (next_gdbarch
)->builtin_int16
;
834 else if (size
== 'w')
835 val_type
= builtin_type (next_gdbarch
)->builtin_int32
;
836 else if (size
== 'g')
837 val_type
= builtin_type (next_gdbarch
)->builtin_int64
;
841 struct type
*char_type
= NULL
;
843 /* Search for "char16_t" or "char32_t" types or fall back to 8-bit char
844 if type is not found. */
846 char_type
= builtin_type (next_gdbarch
)->builtin_char16
;
847 else if (size
== 'w')
848 char_type
= builtin_type (next_gdbarch
)->builtin_char32
;
850 val_type
= char_type
;
853 if (size
!= '\0' && size
!= 'b')
854 warning (_("Unable to display strings with "
855 "size '%c', using 'b' instead."), size
);
857 val_type
= builtin_type (next_gdbarch
)->builtin_int8
;
866 if (format
== 's' || format
== 'i')
869 get_formatted_print_options (&opts
, format
);
871 /* Print as many objects as specified in COUNT, at most maxelts per line,
872 with the address of the next one at the start of each line. */
878 fputs_filtered (pc_prefix (next_address
), gdb_stdout
);
879 print_address (next_gdbarch
, next_address
, gdb_stdout
);
880 printf_filtered (":");
885 printf_filtered ("\t");
886 /* Note that print_formatted sets next_address for the next
888 last_examine_address
= next_address
;
890 if (last_examine_value
)
891 value_free (last_examine_value
);
893 /* The value to be displayed is not fetched greedily.
894 Instead, to avoid the possibility of a fetched value not
895 being used, its retrieval is delayed until the print code
896 uses it. When examining an instruction stream, the
897 disassembler will perform its own memory fetch using just
898 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
899 the disassembler be modified so that LAST_EXAMINE_VALUE
900 is left with the byte sequence from the last complete
901 instruction fetched from memory? */
902 last_examine_value
= value_at_lazy (val_type
, next_address
);
904 if (last_examine_value
)
905 release_value (last_examine_value
);
907 print_formatted (last_examine_value
, size
, &opts
, gdb_stdout
);
909 /* Display any branch delay slots following the final insn. */
910 if (format
== 'i' && count
== 1)
911 count
+= branch_delay_insns
;
913 printf_filtered ("\n");
914 gdb_flush (gdb_stdout
);
919 validate_format (struct format_data fmt
, const char *cmdname
)
922 error (_("Size letters are meaningless in \"%s\" command."), cmdname
);
924 error (_("Item count other than 1 is meaningless in \"%s\" command."),
926 if (fmt
.format
== 'i')
927 error (_("Format letter \"%c\" is meaningless in \"%s\" command."),
928 fmt
.format
, cmdname
);
931 /* Parse print command format string into *FMTP and update *EXPP.
932 CMDNAME should name the current command. */
935 print_command_parse_format (const char **expp
, const char *cmdname
,
936 struct format_data
*fmtp
)
938 const char *exp
= *expp
;
940 if (exp
&& *exp
== '/')
943 *fmtp
= decode_format (&exp
, last_format
, 0);
944 validate_format (*fmtp
, cmdname
);
945 last_format
= fmtp
->format
;
958 /* Print VAL to console according to *FMTP, including recording it to
962 print_value (struct value
*val
, const struct format_data
*fmtp
)
964 struct value_print_options opts
;
965 int histindex
= record_latest_value (val
);
967 annotate_value_history_begin (histindex
, value_type (val
));
969 printf_filtered ("$%d = ", histindex
);
971 annotate_value_history_value ();
973 get_formatted_print_options (&opts
, fmtp
->format
);
974 opts
.raw
= fmtp
->raw
;
976 print_formatted (val
, fmtp
->size
, &opts
, gdb_stdout
);
977 printf_filtered ("\n");
979 annotate_value_history_end ();
982 /* Evaluate string EXP as an expression in the current language and
983 print the resulting value. EXP may contain a format specifier as the
984 first argument ("/x myvar" for example, to print myvar in hex). */
987 print_command_1 (const char *exp
, int voidprint
)
989 struct expression
*expr
;
990 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
992 struct format_data fmt
;
994 print_command_parse_format (&exp
, "print", &fmt
);
998 expr
= parse_expression (exp
);
999 make_cleanup (free_current_contents
, &expr
);
1000 val
= evaluate_expression (expr
);
1003 val
= access_value_history (0);
1005 if (voidprint
|| (val
&& value_type (val
) &&
1006 TYPE_CODE (value_type (val
)) != TYPE_CODE_VOID
))
1007 print_value (val
, &fmt
);
1009 do_cleanups (old_chain
);
1013 print_command (char *exp
, int from_tty
)
1015 print_command_1 (exp
, 1);
1018 /* Same as print, except it doesn't print void results. */
1020 call_command (char *exp
, int from_tty
)
1022 print_command_1 (exp
, 0);
1025 /* Implementation of the "output" command. */
1028 output_command (char *exp
, int from_tty
)
1030 output_command_const (exp
, from_tty
);
1033 /* Like output_command, but takes a const string as argument. */
1036 output_command_const (const char *exp
, int from_tty
)
1038 struct expression
*expr
;
1039 struct cleanup
*old_chain
;
1042 struct format_data fmt
;
1043 struct value_print_options opts
;
1048 if (exp
&& *exp
== '/')
1051 fmt
= decode_format (&exp
, 0, 0);
1052 validate_format (fmt
, "output");
1053 format
= fmt
.format
;
1056 expr
= parse_expression (exp
);
1057 old_chain
= make_cleanup (free_current_contents
, &expr
);
1059 val
= evaluate_expression (expr
);
1061 annotate_value_begin (value_type (val
));
1063 get_formatted_print_options (&opts
, format
);
1065 print_formatted (val
, fmt
.size
, &opts
, gdb_stdout
);
1067 annotate_value_end ();
1070 gdb_flush (gdb_stdout
);
1072 do_cleanups (old_chain
);
1076 set_command (char *exp
, int from_tty
)
1078 struct expression
*expr
= parse_expression (exp
);
1079 struct cleanup
*old_chain
=
1080 make_cleanup (free_current_contents
, &expr
);
1082 if (expr
->nelts
>= 1)
1083 switch (expr
->elts
[0].opcode
)
1085 case UNOP_PREINCREMENT
:
1086 case UNOP_POSTINCREMENT
:
1087 case UNOP_PREDECREMENT
:
1088 case UNOP_POSTDECREMENT
:
1090 case BINOP_ASSIGN_MODIFY
:
1095 (_("Expression is not an assignment (and might have no effect)"));
1098 evaluate_expression (expr
);
1099 do_cleanups (old_chain
);
1103 sym_info (char *arg
, int from_tty
)
1105 struct minimal_symbol
*msymbol
;
1106 struct objfile
*objfile
;
1107 struct obj_section
*osect
;
1108 CORE_ADDR addr
, sect_addr
;
1110 unsigned int offset
;
1113 error_no_arg (_("address"));
1115 addr
= parse_and_eval_address (arg
);
1116 ALL_OBJSECTIONS (objfile
, osect
)
1118 /* Only process each object file once, even if there's a separate
1120 if (objfile
->separate_debug_objfile_backlink
)
1123 sect_addr
= overlay_mapped_address (addr
, osect
);
1125 if (obj_section_addr (osect
) <= sect_addr
1126 && sect_addr
< obj_section_endaddr (osect
)
1128 = lookup_minimal_symbol_by_pc_section (sect_addr
, osect
).minsym
))
1130 const char *obj_name
, *mapped
, *sec_name
, *msym_name
;
1132 struct cleanup
*old_chain
;
1135 offset
= sect_addr
- MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
);
1136 mapped
= section_is_mapped (osect
) ? _("mapped") : _("unmapped");
1137 sec_name
= osect
->the_bfd_section
->name
;
1138 msym_name
= MSYMBOL_PRINT_NAME (msymbol
);
1140 /* Don't print the offset if it is zero.
1141 We assume there's no need to handle i18n of "sym + offset". */
1143 loc_string
= xstrprintf ("%s + %u", msym_name
, offset
);
1145 loc_string
= xstrprintf ("%s", msym_name
);
1147 /* Use a cleanup to free loc_string in case the user quits
1148 a pagination request inside printf_filtered. */
1149 old_chain
= make_cleanup (xfree
, loc_string
);
1151 gdb_assert (osect
->objfile
&& objfile_name (osect
->objfile
));
1152 obj_name
= objfile_name (osect
->objfile
);
1154 if (MULTI_OBJFILE_P ())
1155 if (pc_in_unmapped_range (addr
, osect
))
1156 if (section_is_overlay (osect
))
1157 printf_filtered (_("%s in load address range of "
1158 "%s overlay section %s of %s\n"),
1159 loc_string
, mapped
, sec_name
, obj_name
);
1161 printf_filtered (_("%s in load address range of "
1162 "section %s of %s\n"),
1163 loc_string
, sec_name
, obj_name
);
1165 if (section_is_overlay (osect
))
1166 printf_filtered (_("%s in %s overlay section %s of %s\n"),
1167 loc_string
, mapped
, sec_name
, obj_name
);
1169 printf_filtered (_("%s in section %s of %s\n"),
1170 loc_string
, sec_name
, obj_name
);
1172 if (pc_in_unmapped_range (addr
, osect
))
1173 if (section_is_overlay (osect
))
1174 printf_filtered (_("%s in load address range of %s overlay "
1176 loc_string
, mapped
, sec_name
);
1178 printf_filtered (_("%s in load address range of section %s\n"),
1179 loc_string
, sec_name
);
1181 if (section_is_overlay (osect
))
1182 printf_filtered (_("%s in %s overlay section %s\n"),
1183 loc_string
, mapped
, sec_name
);
1185 printf_filtered (_("%s in section %s\n"),
1186 loc_string
, sec_name
);
1188 do_cleanups (old_chain
);
1192 printf_filtered (_("No symbol matches %s.\n"), arg
);
1196 address_info (char *exp
, int from_tty
)
1198 struct gdbarch
*gdbarch
;
1201 struct bound_minimal_symbol msymbol
;
1203 struct obj_section
*section
;
1204 CORE_ADDR load_addr
, context_pc
= 0;
1205 struct field_of_this_result is_a_field_of_this
;
1208 error (_("Argument required."));
1210 sym
= lookup_symbol (exp
, get_selected_block (&context_pc
), VAR_DOMAIN
,
1211 &is_a_field_of_this
);
1214 if (is_a_field_of_this
.type
!= NULL
)
1216 printf_filtered ("Symbol \"");
1217 fprintf_symbol_filtered (gdb_stdout
, exp
,
1218 current_language
->la_language
, DMGL_ANSI
);
1219 printf_filtered ("\" is a field of the local class variable ");
1220 if (current_language
->la_language
== language_objc
)
1221 printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
1223 printf_filtered ("`this'\n");
1227 msymbol
= lookup_bound_minimal_symbol (exp
);
1229 if (msymbol
.minsym
!= NULL
)
1231 struct objfile
*objfile
= msymbol
.objfile
;
1233 gdbarch
= get_objfile_arch (objfile
);
1234 load_addr
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1236 printf_filtered ("Symbol \"");
1237 fprintf_symbol_filtered (gdb_stdout
, exp
,
1238 current_language
->la_language
, DMGL_ANSI
);
1239 printf_filtered ("\" is at ");
1240 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1241 printf_filtered (" in a file compiled without debugging");
1242 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
1243 if (section_is_overlay (section
))
1245 load_addr
= overlay_unmapped_address (load_addr
, section
);
1246 printf_filtered (",\n -- loaded at ");
1247 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1248 printf_filtered (" in overlay section %s",
1249 section
->the_bfd_section
->name
);
1251 printf_filtered (".\n");
1254 error (_("No symbol \"%s\" in current context."), exp
);
1258 printf_filtered ("Symbol \"");
1259 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_PRINT_NAME (sym
),
1260 current_language
->la_language
, DMGL_ANSI
);
1261 printf_filtered ("\" is ");
1262 val
= SYMBOL_VALUE (sym
);
1263 if (SYMBOL_OBJFILE_OWNED (sym
))
1264 section
= SYMBOL_OBJ_SECTION (symbol_objfile (sym
), sym
);
1267 gdbarch
= symbol_arch (sym
);
1269 if (SYMBOL_COMPUTED_OPS (sym
) != NULL
)
1271 SYMBOL_COMPUTED_OPS (sym
)->describe_location (sym
, context_pc
,
1273 printf_filtered (".\n");
1277 switch (SYMBOL_CLASS (sym
))
1280 case LOC_CONST_BYTES
:
1281 printf_filtered ("constant");
1285 printf_filtered ("a label at address ");
1286 load_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1287 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1288 if (section_is_overlay (section
))
1290 load_addr
= overlay_unmapped_address (load_addr
, section
);
1291 printf_filtered (",\n -- loaded at ");
1292 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1293 printf_filtered (" in overlay section %s",
1294 section
->the_bfd_section
->name
);
1299 gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method"));
1302 /* GDBARCH is the architecture associated with the objfile the symbol
1303 is defined in; the target architecture may be different, and may
1304 provide additional registers. However, we do not know the target
1305 architecture at this point. We assume the objfile architecture
1306 will contain all the standard registers that occur in debug info
1308 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
1310 if (SYMBOL_IS_ARGUMENT (sym
))
1311 printf_filtered (_("an argument in register %s"),
1312 gdbarch_register_name (gdbarch
, regno
));
1314 printf_filtered (_("a variable in register %s"),
1315 gdbarch_register_name (gdbarch
, regno
));
1319 printf_filtered (_("static storage at address "));
1320 load_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1321 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1322 if (section_is_overlay (section
))
1324 load_addr
= overlay_unmapped_address (load_addr
, section
);
1325 printf_filtered (_(",\n -- loaded at "));
1326 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1327 printf_filtered (_(" in overlay section %s"),
1328 section
->the_bfd_section
->name
);
1332 case LOC_REGPARM_ADDR
:
1333 /* Note comment at LOC_REGISTER. */
1334 regno
= SYMBOL_REGISTER_OPS (sym
)->register_number (sym
, gdbarch
);
1335 printf_filtered (_("address of an argument in register %s"),
1336 gdbarch_register_name (gdbarch
, regno
));
1340 printf_filtered (_("an argument at offset %ld"), val
);
1344 printf_filtered (_("a local variable at frame offset %ld"), val
);
1348 printf_filtered (_("a reference argument at offset %ld"), val
);
1352 printf_filtered (_("a typedef"));
1356 printf_filtered (_("a function at address "));
1357 load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1358 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1359 if (section_is_overlay (section
))
1361 load_addr
= overlay_unmapped_address (load_addr
, section
);
1362 printf_filtered (_(",\n -- loaded at "));
1363 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1364 printf_filtered (_(" in overlay section %s"),
1365 section
->the_bfd_section
->name
);
1369 case LOC_UNRESOLVED
:
1371 struct bound_minimal_symbol msym
;
1373 msym
= lookup_minimal_symbol_and_objfile (SYMBOL_LINKAGE_NAME (sym
));
1374 if (msym
.minsym
== NULL
)
1375 printf_filtered ("unresolved");
1378 section
= MSYMBOL_OBJ_SECTION (msym
.objfile
, msym
.minsym
);
1379 load_addr
= BMSYMBOL_VALUE_ADDRESS (msym
);
1382 && (section
->the_bfd_section
->flags
& SEC_THREAD_LOCAL
) != 0)
1383 printf_filtered (_("a thread-local variable at offset %s "
1384 "in the thread-local storage for `%s'"),
1385 paddress (gdbarch
, load_addr
),
1386 objfile_name (section
->objfile
));
1389 printf_filtered (_("static storage at address "));
1390 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1391 if (section_is_overlay (section
))
1393 load_addr
= overlay_unmapped_address (load_addr
, section
);
1394 printf_filtered (_(",\n -- loaded at "));
1395 fputs_filtered (paddress (gdbarch
, load_addr
), gdb_stdout
);
1396 printf_filtered (_(" in overlay section %s"),
1397 section
->the_bfd_section
->name
);
1404 case LOC_OPTIMIZED_OUT
:
1405 printf_filtered (_("optimized out"));
1409 printf_filtered (_("of unknown (botched) type"));
1412 printf_filtered (".\n");
1417 x_command (char *exp
, int from_tty
)
1419 struct expression
*expr
;
1420 struct format_data fmt
;
1421 struct cleanup
*old_chain
;
1424 fmt
.format
= last_format
? last_format
: 'x';
1425 fmt
.size
= last_size
;
1429 if (exp
&& *exp
== '/')
1431 const char *tmp
= exp
+ 1;
1433 fmt
= decode_format (&tmp
, last_format
, last_size
);
1437 /* If we have an expression, evaluate it and use it as the address. */
1439 if (exp
!= 0 && *exp
!= 0)
1441 expr
= parse_expression (exp
);
1442 /* Cause expression not to be there any more if this command is
1443 repeated with Newline. But don't clobber a user-defined
1444 command's definition. */
1447 old_chain
= make_cleanup (free_current_contents
, &expr
);
1448 val
= evaluate_expression (expr
);
1449 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_REF
)
1450 val
= coerce_ref (val
);
1451 /* In rvalue contexts, such as this, functions are coerced into
1452 pointers to functions. This makes "x/i main" work. */
1453 if (/* last_format == 'i' && */
1454 TYPE_CODE (value_type (val
)) == TYPE_CODE_FUNC
1455 && VALUE_LVAL (val
) == lval_memory
)
1456 next_address
= value_address (val
);
1458 next_address
= value_as_address (val
);
1460 next_gdbarch
= expr
->gdbarch
;
1461 do_cleanups (old_chain
);
1465 error_no_arg (_("starting display address"));
1467 do_examine (fmt
, next_gdbarch
, next_address
);
1469 /* If the examine succeeds, we remember its size and format for next
1470 time. Set last_size to 'b' for strings. */
1471 if (fmt
.format
== 's')
1474 last_size
= fmt
.size
;
1475 last_format
= fmt
.format
;
1477 /* Set a couple of internal variables if appropriate. */
1478 if (last_examine_value
)
1480 /* Make last address examined available to the user as $_. Use
1481 the correct pointer type. */
1482 struct type
*pointer_type
1483 = lookup_pointer_type (value_type (last_examine_value
));
1484 set_internalvar (lookup_internalvar ("_"),
1485 value_from_pointer (pointer_type
,
1486 last_examine_address
));
1488 /* Make contents of last address examined available to the user
1489 as $__. If the last value has not been fetched from memory
1490 then don't fetch it now; instead mark it by voiding the $__
1492 if (value_lazy (last_examine_value
))
1493 clear_internalvar (lookup_internalvar ("__"));
1495 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1500 /* Add an expression to the auto-display chain.
1501 Specify the expression. */
1504 display_command (char *arg
, int from_tty
)
1506 struct format_data fmt
;
1507 struct expression
*expr
;
1508 struct display
*newobj
;
1510 const char *exp
= arg
;
1513 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1515 if (tui_active
&& exp
!= NULL
&& *exp
== '$')
1516 display_it
= (tui_set_layout_for_display_command (exp
) == TUI_FAILURE
);
1530 fmt
= decode_format (&exp
, 0, 0);
1531 if (fmt
.size
&& fmt
.format
== 0)
1533 if (fmt
.format
== 'i' || fmt
.format
== 's')
1544 innermost_block
= NULL
;
1545 expr
= parse_expression (exp
);
1547 newobj
= (struct display
*) xmalloc (sizeof (struct display
));
1549 newobj
->exp_string
= xstrdup (exp
);
1551 newobj
->block
= innermost_block
;
1552 newobj
->pspace
= current_program_space
;
1553 newobj
->next
= display_chain
;
1554 newobj
->number
= ++display_number
;
1555 newobj
->format
= fmt
;
1556 newobj
->enabled_p
= 1;
1557 display_chain
= newobj
;
1560 do_one_display (newobj
);
1567 free_display (struct display
*d
)
1569 xfree (d
->exp_string
);
1574 /* Clear out the display_chain. Done when new symtabs are loaded,
1575 since this invalidates the types stored in many expressions. */
1578 clear_displays (void)
1582 while ((d
= display_chain
) != NULL
)
1584 display_chain
= d
->next
;
1589 /* Delete the auto-display DISPLAY. */
1592 delete_display (struct display
*display
)
1596 gdb_assert (display
!= NULL
);
1598 if (display_chain
== display
)
1599 display_chain
= display
->next
;
1602 if (d
->next
== display
)
1604 d
->next
= display
->next
;
1608 free_display (display
);
1611 /* Call FUNCTION on each of the displays whose numbers are given in
1612 ARGS. DATA is passed unmodified to FUNCTION. */
1615 map_display_numbers (char *args
,
1616 void (*function
) (struct display
*,
1620 struct get_number_or_range_state state
;
1624 error_no_arg (_("one or more display numbers"));
1626 init_number_or_range (&state
, args
);
1628 while (!state
.finished
)
1630 const char *p
= state
.string
;
1632 num
= get_number_or_range (&state
);
1634 warning (_("bad display number at or near '%s'"), p
);
1637 struct display
*d
, *tmp
;
1639 ALL_DISPLAYS_SAFE (d
, tmp
)
1640 if (d
->number
== num
)
1643 printf_unfiltered (_("No display number %d.\n"), num
);
1650 /* Callback for map_display_numbers, that deletes a display. */
1653 do_delete_display (struct display
*d
, void *data
)
1658 /* "undisplay" command. */
1661 undisplay_command (char *args
, int from_tty
)
1665 if (query (_("Delete all auto-display expressions? ")))
1671 map_display_numbers (args
, do_delete_display
, NULL
);
1675 /* Display a single auto-display.
1676 Do nothing if the display cannot be printed in the current context,
1677 or if the display is disabled. */
1680 do_one_display (struct display
*d
)
1682 struct cleanup
*old_chain
;
1683 int within_current_scope
;
1685 if (d
->enabled_p
== 0)
1688 /* The expression carries the architecture that was used at parse time.
1689 This is a problem if the expression depends on architecture features
1690 (e.g. register numbers), and the current architecture is now different.
1691 For example, a display statement like "display/i $pc" is expected to
1692 display the PC register of the current architecture, not the arch at
1693 the time the display command was given. Therefore, we re-parse the
1694 expression if the current architecture has changed. */
1695 if (d
->exp
!= NULL
&& d
->exp
->gdbarch
!= get_current_arch ())
1707 innermost_block
= NULL
;
1708 d
->exp
= parse_expression (d
->exp_string
);
1709 d
->block
= innermost_block
;
1711 CATCH (ex
, RETURN_MASK_ALL
)
1713 /* Can't re-parse the expression. Disable this display item. */
1715 warning (_("Unable to display \"%s\": %s"),
1716 d
->exp_string
, ex
.message
);
1724 if (d
->pspace
== current_program_space
)
1725 within_current_scope
= contained_in (get_selected_block (0), d
->block
);
1727 within_current_scope
= 0;
1730 within_current_scope
= 1;
1731 if (!within_current_scope
)
1734 old_chain
= make_cleanup_restore_integer (¤t_display_number
);
1735 current_display_number
= d
->number
;
1737 annotate_display_begin ();
1738 printf_filtered ("%d", d
->number
);
1739 annotate_display_number_end ();
1740 printf_filtered (": ");
1744 annotate_display_format ();
1746 printf_filtered ("x/");
1747 if (d
->format
.count
!= 1)
1748 printf_filtered ("%d", d
->format
.count
);
1749 printf_filtered ("%c", d
->format
.format
);
1750 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1751 printf_filtered ("%c", d
->format
.size
);
1752 printf_filtered (" ");
1754 annotate_display_expression ();
1756 puts_filtered (d
->exp_string
);
1757 annotate_display_expression_end ();
1759 if (d
->format
.count
!= 1 || d
->format
.format
== 'i')
1760 printf_filtered ("\n");
1762 printf_filtered (" ");
1764 annotate_display_value ();
1771 val
= evaluate_expression (d
->exp
);
1772 addr
= value_as_address (val
);
1773 if (d
->format
.format
== 'i')
1774 addr
= gdbarch_addr_bits_remove (d
->exp
->gdbarch
, addr
);
1775 do_examine (d
->format
, d
->exp
->gdbarch
, addr
);
1777 CATCH (ex
, RETURN_MASK_ERROR
)
1779 fprintf_filtered (gdb_stdout
, _("<error: %s>\n"), ex
.message
);
1785 struct value_print_options opts
;
1787 annotate_display_format ();
1789 if (d
->format
.format
)
1790 printf_filtered ("/%c ", d
->format
.format
);
1792 annotate_display_expression ();
1794 puts_filtered (d
->exp_string
);
1795 annotate_display_expression_end ();
1797 printf_filtered (" = ");
1799 annotate_display_expression ();
1801 get_formatted_print_options (&opts
, d
->format
.format
);
1802 opts
.raw
= d
->format
.raw
;
1808 val
= evaluate_expression (d
->exp
);
1809 print_formatted (val
, d
->format
.size
, &opts
, gdb_stdout
);
1811 CATCH (ex
, RETURN_MASK_ERROR
)
1813 fprintf_filtered (gdb_stdout
, _("<error: %s>"), ex
.message
);
1817 printf_filtered ("\n");
1820 annotate_display_end ();
1822 gdb_flush (gdb_stdout
);
1823 do_cleanups (old_chain
);
1826 /* Display all of the values on the auto-display chain which can be
1827 evaluated in the current scope. */
1834 for (d
= display_chain
; d
; d
= d
->next
)
1838 /* Delete the auto-display which we were in the process of displaying.
1839 This is done when there is an error or a signal. */
1842 disable_display (int num
)
1846 for (d
= display_chain
; d
; d
= d
->next
)
1847 if (d
->number
== num
)
1852 printf_unfiltered (_("No display number %d.\n"), num
);
1856 disable_current_display (void)
1858 if (current_display_number
>= 0)
1860 disable_display (current_display_number
);
1861 fprintf_unfiltered (gdb_stderr
,
1862 _("Disabling display %d to "
1863 "avoid infinite recursion.\n"),
1864 current_display_number
);
1866 current_display_number
= -1;
1870 display_info (char *ignore
, int from_tty
)
1875 printf_unfiltered (_("There are no auto-display expressions now.\n"));
1877 printf_filtered (_("Auto-display expressions now in effect:\n\
1878 Num Enb Expression\n"));
1880 for (d
= display_chain
; d
; d
= d
->next
)
1882 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->enabled_p
]);
1884 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1886 else if (d
->format
.format
)
1887 printf_filtered ("/%c ", d
->format
.format
);
1888 puts_filtered (d
->exp_string
);
1889 if (d
->block
&& !contained_in (get_selected_block (0), d
->block
))
1890 printf_filtered (_(" (cannot be evaluated in the current context)"));
1891 printf_filtered ("\n");
1892 gdb_flush (gdb_stdout
);
1896 /* Callback fo map_display_numbers, that enables or disables the
1897 passed in display D. */
1900 do_enable_disable_display (struct display
*d
, void *data
)
1902 d
->enabled_p
= *(int *) data
;
1905 /* Implamentation of both the "disable display" and "enable display"
1906 commands. ENABLE decides what to do. */
1909 enable_disable_display_command (char *args
, int from_tty
, int enable
)
1916 d
->enabled_p
= enable
;
1920 map_display_numbers (args
, do_enable_disable_display
, &enable
);
1923 /* The "enable display" command. */
1926 enable_display_command (char *args
, int from_tty
)
1928 enable_disable_display_command (args
, from_tty
, 1);
1931 /* The "disable display" command. */
1934 disable_display_command (char *args
, int from_tty
)
1936 enable_disable_display_command (args
, from_tty
, 0);
1939 /* display_chain items point to blocks and expressions. Some expressions in
1940 turn may point to symbols.
1941 Both symbols and blocks are obstack_alloc'd on objfile_stack, and are
1942 obstack_free'd when a shared library is unloaded.
1943 Clear pointers that are about to become dangling.
1944 Both .exp and .block fields will be restored next time we need to display
1945 an item by re-parsing .exp_string field in the new execution context. */
1948 clear_dangling_display_expressions (struct objfile
*objfile
)
1951 struct program_space
*pspace
;
1953 /* With no symbol file we cannot have a block or expression from it. */
1954 if (objfile
== NULL
)
1956 pspace
= objfile
->pspace
;
1957 if (objfile
->separate_debug_objfile_backlink
)
1959 objfile
= objfile
->separate_debug_objfile_backlink
;
1960 gdb_assert (objfile
->pspace
== pspace
);
1963 for (d
= display_chain
; d
!= NULL
; d
= d
->next
)
1965 if (d
->pspace
!= pspace
)
1968 if (lookup_objfile_from_block (d
->block
) == objfile
1969 || (d
->exp
&& exp_uses_objfile (d
->exp
, objfile
)))
1979 /* Print the value in stack frame FRAME of a variable specified by a
1980 struct symbol. NAME is the name to print; if NULL then VAR's print
1981 name will be used. STREAM is the ui_file on which to print the
1982 value. INDENT specifies the number of indent levels to print
1983 before printing the variable name.
1985 This function invalidates FRAME. */
1988 print_variable_and_value (const char *name
, struct symbol
*var
,
1989 struct frame_info
*frame
,
1990 struct ui_file
*stream
, int indent
)
1994 name
= SYMBOL_PRINT_NAME (var
);
1996 fprintf_filtered (stream
, "%s%s = ", n_spaces (2 * indent
), name
);
2000 struct value_print_options opts
;
2002 val
= read_var_value (var
, frame
);
2003 get_user_print_options (&opts
);
2005 common_val_print (val
, stream
, indent
, &opts
, current_language
);
2007 /* common_val_print invalidates FRAME when a pretty printer calls inferior
2011 CATCH (except
, RETURN_MASK_ERROR
)
2013 fprintf_filtered(stream
, "<error reading variable %s (%s)>", name
,
2018 fprintf_filtered (stream
, "\n");
2021 /* Subroutine of ui_printf to simplify it.
2022 Print VALUE to STREAM using FORMAT.
2023 VALUE is a C-style string on the target. */
2026 printf_c_string (struct ui_file
*stream
, const char *format
,
2027 struct value
*value
)
2033 tem
= value_as_address (value
);
2035 /* This is a %s argument. Find the length of the string. */
2041 read_memory (tem
+ j
, &c
, 1);
2046 /* Copy the string contents into a string inside GDB. */
2047 str
= (gdb_byte
*) alloca (j
+ 1);
2049 read_memory (tem
, str
, j
);
2052 fprintf_filtered (stream
, format
, (char *) str
);
2055 /* Subroutine of ui_printf to simplify it.
2056 Print VALUE to STREAM using FORMAT.
2057 VALUE is a wide C-style string on the target. */
2060 printf_wide_c_string (struct ui_file
*stream
, const char *format
,
2061 struct value
*value
)
2066 struct gdbarch
*gdbarch
= get_type_arch (value_type (value
));
2067 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2068 struct type
*wctype
= lookup_typename (current_language
, gdbarch
,
2069 "wchar_t", NULL
, 0);
2070 int wcwidth
= TYPE_LENGTH (wctype
);
2071 gdb_byte
*buf
= alloca (wcwidth
);
2072 struct obstack output
;
2073 struct cleanup
*inner_cleanup
;
2075 tem
= value_as_address (value
);
2077 /* This is a %s argument. Find the length of the string. */
2078 for (j
= 0;; j
+= wcwidth
)
2081 read_memory (tem
+ j
, buf
, wcwidth
);
2082 if (extract_unsigned_integer (buf
, wcwidth
, byte_order
) == 0)
2086 /* Copy the string contents into a string inside GDB. */
2087 str
= (gdb_byte
*) alloca (j
+ wcwidth
);
2089 read_memory (tem
, str
, j
);
2090 memset (&str
[j
], 0, wcwidth
);
2092 obstack_init (&output
);
2093 inner_cleanup
= make_cleanup_obstack_free (&output
);
2095 convert_between_encodings (target_wide_charset (gdbarch
),
2098 &output
, translit_char
);
2099 obstack_grow_str0 (&output
, "");
2101 fprintf_filtered (stream
, format
, obstack_base (&output
));
2102 do_cleanups (inner_cleanup
);
2105 /* Subroutine of ui_printf to simplify it.
2106 Print VALUE, a decimal floating point value, to STREAM using FORMAT. */
2109 printf_decfloat (struct ui_file
*stream
, const char *format
,
2110 struct value
*value
)
2112 const gdb_byte
*param_ptr
= value_contents (value
);
2114 #if defined (PRINTF_HAS_DECFLOAT)
2115 /* If we have native support for Decimal floating
2116 printing, handle it here. */
2117 fprintf_filtered (stream
, format
, param_ptr
);
2119 /* As a workaround until vasprintf has native support for DFP
2120 we convert the DFP values to string and print them using
2121 the %s format specifier. */
2124 /* Parameter data. */
2125 struct type
*param_type
= value_type (value
);
2126 struct gdbarch
*gdbarch
= get_type_arch (param_type
);
2127 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2129 /* DFP output data. */
2130 struct value
*dfp_value
= NULL
;
2134 struct type
*dfp_type
= NULL
;
2135 char decstr
[MAX_DECIMAL_STRING
];
2137 /* Points to the end of the string so that we can go back
2138 and check for DFP length modifiers. */
2139 p
= format
+ strlen (format
);
2141 /* Look for the float/double format specifier. */
2142 while (*p
!= 'f' && *p
!= 'e' && *p
!= 'E'
2143 && *p
!= 'g' && *p
!= 'G')
2146 /* Search for the '%' char and extract the size and type of
2147 the output decimal value based on its modifiers
2148 (%Hf, %Df, %DDf). */
2154 dfp_type
= builtin_type (gdbarch
)->builtin_decfloat
;
2156 else if (*p
== 'D' && *(p
- 1) == 'D')
2159 dfp_type
= builtin_type (gdbarch
)->builtin_declong
;
2165 dfp_type
= builtin_type (gdbarch
)->builtin_decdouble
;
2169 /* Conversion between different DFP types. */
2170 if (TYPE_CODE (param_type
) == TYPE_CODE_DECFLOAT
)
2171 decimal_convert (param_ptr
, TYPE_LENGTH (param_type
),
2172 byte_order
, dec
, dfp_len
, byte_order
);
2174 /* If this is a non-trivial conversion, just output 0.
2175 A correct converted value can be displayed by explicitly
2176 casting to a DFP type. */
2177 decimal_from_string (dec
, dfp_len
, byte_order
, "0");
2179 dfp_value
= value_from_decfloat (dfp_type
, dec
);
2181 dfp_ptr
= (gdb_byte
*) value_contents (dfp_value
);
2183 decimal_to_string (dfp_ptr
, dfp_len
, byte_order
, decstr
);
2185 /* Print the DFP value. */
2186 fprintf_filtered (stream
, "%s", decstr
);
2190 /* Subroutine of ui_printf to simplify it.
2191 Print VALUE, a target pointer, to STREAM using FORMAT. */
2194 printf_pointer (struct ui_file
*stream
, const char *format
,
2195 struct value
*value
)
2197 /* We avoid the host's %p because pointers are too
2198 likely to be the wrong size. The only interesting
2199 modifier for %p is a width; extract that, and then
2200 handle %p as glibc would: %#x or a literal "(nil)". */
2204 #ifdef PRINTF_HAS_LONG_LONG
2205 long long val
= value_as_long (value
);
2207 long val
= value_as_long (value
);
2210 fmt
= alloca (strlen (format
) + 5);
2212 /* Copy up to the leading %. */
2217 int is_percent
= (*p
== '%');
2232 /* Copy any width. */
2233 while (*p
>= '0' && *p
< '9')
2236 gdb_assert (*p
== 'p' && *(p
+ 1) == '\0');
2239 #ifdef PRINTF_HAS_LONG_LONG
2245 fprintf_filtered (stream
, fmt
, val
);
2251 fprintf_filtered (stream
, fmt
, "(nil)");
2255 /* printf "printf format string" ARG to STREAM. */
2258 ui_printf (const char *arg
, struct ui_file
*stream
)
2260 struct format_piece
*fpieces
;
2261 const char *s
= arg
;
2262 struct value
**val_args
;
2263 int allocated_args
= 20;
2264 struct cleanup
*old_cleanups
;
2266 val_args
= xmalloc (allocated_args
* sizeof (struct value
*));
2267 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
2270 error_no_arg (_("format-control string and values to print"));
2272 s
= skip_spaces_const (s
);
2274 /* A format string should follow, enveloped in double quotes. */
2276 error (_("Bad format string, missing '\"'."));
2278 fpieces
= parse_format_string (&s
);
2280 make_cleanup (free_format_pieces_cleanup
, &fpieces
);
2283 error (_("Bad format string, non-terminated '\"'."));
2285 s
= skip_spaces_const (s
);
2287 if (*s
!= ',' && *s
!= 0)
2288 error (_("Invalid argument syntax"));
2292 s
= skip_spaces_const (s
);
2298 char *current_substring
;
2301 for (fr
= 0; fpieces
[fr
].string
!= NULL
; fr
++)
2302 if (fpieces
[fr
].argclass
!= literal_piece
)
2305 /* Now, parse all arguments and evaluate them.
2306 Store the VALUEs in VAL_ARGS. */
2312 if (nargs
== allocated_args
)
2313 val_args
= (struct value
**) xrealloc ((char *) val_args
,
2314 (allocated_args
*= 2)
2315 * sizeof (struct value
*));
2317 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2325 if (nargs
!= nargs_wanted
)
2326 error (_("Wrong number of arguments for specified format-string"));
2328 /* Now actually print them. */
2330 for (fr
= 0; fpieces
[fr
].string
!= NULL
; fr
++)
2332 current_substring
= fpieces
[fr
].string
;
2333 switch (fpieces
[fr
].argclass
)
2336 printf_c_string (stream
, current_substring
, val_args
[i
]);
2338 case wide_string_arg
:
2339 printf_wide_c_string (stream
, current_substring
, val_args
[i
]);
2343 struct gdbarch
*gdbarch
2344 = get_type_arch (value_type (val_args
[i
]));
2345 struct type
*wctype
= lookup_typename (current_language
, gdbarch
,
2346 "wchar_t", NULL
, 0);
2347 struct type
*valtype
;
2348 struct obstack output
;
2349 struct cleanup
*inner_cleanup
;
2350 const gdb_byte
*bytes
;
2352 valtype
= value_type (val_args
[i
]);
2353 if (TYPE_LENGTH (valtype
) != TYPE_LENGTH (wctype
)
2354 || TYPE_CODE (valtype
) != TYPE_CODE_INT
)
2355 error (_("expected wchar_t argument for %%lc"));
2357 bytes
= value_contents (val_args
[i
]);
2359 obstack_init (&output
);
2360 inner_cleanup
= make_cleanup_obstack_free (&output
);
2362 convert_between_encodings (target_wide_charset (gdbarch
),
2364 bytes
, TYPE_LENGTH (valtype
),
2365 TYPE_LENGTH (valtype
),
2366 &output
, translit_char
);
2367 obstack_grow_str0 (&output
, "");
2369 fprintf_filtered (stream
, current_substring
,
2370 obstack_base (&output
));
2371 do_cleanups (inner_cleanup
);
2376 struct type
*type
= value_type (val_args
[i
]);
2380 /* If format string wants a float, unchecked-convert the value
2381 to floating point of the same size. */
2382 type
= float_type_from_length (type
);
2383 val
= unpack_double (type
, value_contents (val_args
[i
]), &inv
);
2385 error (_("Invalid floating value found in program."));
2387 fprintf_filtered (stream
, current_substring
, (double) val
);
2390 case long_double_arg
:
2391 #ifdef HAVE_LONG_DOUBLE
2393 struct type
*type
= value_type (val_args
[i
]);
2397 /* If format string wants a float, unchecked-convert the value
2398 to floating point of the same size. */
2399 type
= float_type_from_length (type
);
2400 val
= unpack_double (type
, value_contents (val_args
[i
]), &inv
);
2402 error (_("Invalid floating value found in program."));
2404 fprintf_filtered (stream
, current_substring
,
2409 error (_("long double not supported in printf"));
2412 #ifdef PRINTF_HAS_LONG_LONG
2414 long long val
= value_as_long (val_args
[i
]);
2416 fprintf_filtered (stream
, current_substring
, val
);
2420 error (_("long long not supported in printf"));
2424 int val
= value_as_long (val_args
[i
]);
2426 fprintf_filtered (stream
, current_substring
, val
);
2431 long val
= value_as_long (val_args
[i
]);
2433 fprintf_filtered (stream
, current_substring
, val
);
2436 /* Handles decimal floating values. */
2438 printf_decfloat (stream
, current_substring
, val_args
[i
]);
2441 printf_pointer (stream
, current_substring
, val_args
[i
]);
2444 /* Print a portion of the format string that has no
2445 directives. Note that this will not include any
2446 ordinary %-specs, but it might include "%%". That is
2447 why we use printf_filtered and not puts_filtered here.
2448 Also, we pass a dummy argument because some platforms
2449 have modified GCC to include -Wformat-security by
2450 default, which will warn here if there is no
2452 fprintf_filtered (stream
, current_substring
, 0);
2455 internal_error (__FILE__
, __LINE__
,
2456 _("failed internal consistency check"));
2458 /* Maybe advance to the next argument. */
2459 if (fpieces
[fr
].argclass
!= literal_piece
)
2463 do_cleanups (old_cleanups
);
2466 /* Implement the "printf" command. */
2469 printf_command (char *arg
, int from_tty
)
2471 ui_printf (arg
, gdb_stdout
);
2472 gdb_flush (gdb_stdout
);
2475 /* Implement the "eval" command. */
2478 eval_command (char *arg
, int from_tty
)
2480 struct ui_file
*ui_out
= mem_fileopen ();
2481 struct cleanup
*cleanups
= make_cleanup_ui_file_delete (ui_out
);
2484 ui_printf (arg
, ui_out
);
2486 expanded
= ui_file_xstrdup (ui_out
, NULL
);
2487 make_cleanup (xfree
, expanded
);
2489 execute_command (expanded
, from_tty
);
2491 do_cleanups (cleanups
);
2495 _initialize_printcmd (void)
2497 struct cmd_list_element
*c
;
2499 current_display_number
= -1;
2501 observer_attach_free_objfile (clear_dangling_display_expressions
);
2503 add_info ("address", address_info
,
2504 _("Describe where symbol SYM is stored."));
2506 add_info ("symbol", sym_info
, _("\
2507 Describe what symbol is at location ADDR.\n\
2508 Only for symbols with fixed locations (global or static scope)."));
2510 add_com ("x", class_vars
, x_command
, _("\
2511 Examine memory: x/FMT ADDRESS.\n\
2512 ADDRESS is an expression for the memory address to examine.\n\
2513 FMT is a repeat count followed by a format letter and a size letter.\n\
2514 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2515 t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\
2516 and z(hex, zero padded on the left).\n\
2517 Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2518 The specified number of objects of the specified size are printed\n\
2519 according to the format.\n\n\
2520 Defaults for format and size letters are those previously used.\n\
2521 Default count is 1. Default address is following last thing printed\n\
2522 with this command or \"print\"."));
2525 add_com ("whereis", class_vars
, whereis_command
,
2526 _("Print line number and file of definition of variable."));
2529 add_info ("display", display_info
, _("\
2530 Expressions to display when program stops, with code numbers."));
2532 add_cmd ("undisplay", class_vars
, undisplay_command
, _("\
2533 Cancel some expressions to be displayed when program stops.\n\
2534 Arguments are the code numbers of the expressions to stop displaying.\n\
2535 No argument means cancel all automatic-display expressions.\n\
2536 \"delete display\" has the same effect as this command.\n\
2537 Do \"info display\" to see current list of code numbers."),
2540 add_com ("display", class_vars
, display_command
, _("\
2541 Print value of expression EXP each time the program stops.\n\
2542 /FMT may be used before EXP as in the \"print\" command.\n\
2543 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2544 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2545 and examining is done as in the \"x\" command.\n\n\
2546 With no argument, display all currently requested auto-display expressions.\n\
2547 Use \"undisplay\" to cancel display requests previously made."));
2549 add_cmd ("display", class_vars
, enable_display_command
, _("\
2550 Enable some expressions to be displayed when program stops.\n\
2551 Arguments are the code numbers of the expressions to resume displaying.\n\
2552 No argument means enable all automatic-display expressions.\n\
2553 Do \"info display\" to see current list of code numbers."), &enablelist
);
2555 add_cmd ("display", class_vars
, disable_display_command
, _("\
2556 Disable some expressions to be displayed when program stops.\n\
2557 Arguments are the code numbers of the expressions to stop displaying.\n\
2558 No argument means disable all automatic-display expressions.\n\
2559 Do \"info display\" to see current list of code numbers."), &disablelist
);
2561 add_cmd ("display", class_vars
, undisplay_command
, _("\
2562 Cancel some expressions to be displayed when program stops.\n\
2563 Arguments are the code numbers of the expressions to stop displaying.\n\
2564 No argument means cancel all automatic-display expressions.\n\
2565 Do \"info display\" to see current list of code numbers."), &deletelist
);
2567 add_com ("printf", class_vars
, printf_command
, _("\
2568 printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2569 This is useful for formatted output in user-defined commands."));
2571 add_com ("output", class_vars
, output_command
, _("\
2572 Like \"print\" but don't put in value history and don't print newline.\n\
2573 This is useful in user-defined commands."));
2575 add_prefix_cmd ("set", class_vars
, set_command
, _("\
2576 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2577 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2578 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2579 with $), a register (a few standard names starting with $), or an actual\n\
2580 variable in the program being debugged. EXP is any valid expression.\n\
2581 Use \"set variable\" for variables with names identical to set subcommands.\n\
2583 With a subcommand, this command modifies parts of the gdb environment.\n\
2584 You can see these environment settings with the \"show\" command."),
2585 &setlist
, "set ", 1, &cmdlist
);
2587 add_com ("assign", class_vars
, set_command
, _("\
2588 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2589 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2590 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2591 with $), a register (a few standard names starting with $), or an actual\n\
2592 variable in the program being debugged. EXP is any valid expression.\n\
2593 Use \"set variable\" for variables with names identical to set subcommands.\n\
2594 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2595 You can see these environment settings with the \"show\" command."));
2597 /* "call" is the same as "set", but handy for dbx users to call fns. */
2598 c
= add_com ("call", class_vars
, call_command
, _("\
2599 Call a function in the program.\n\
2600 The argument is the function name and arguments, in the notation of the\n\
2601 current working language. The result is printed and saved in the value\n\
2602 history, if it is not void."));
2603 set_cmd_completer (c
, expression_completer
);
2605 add_cmd ("variable", class_vars
, set_command
, _("\
2606 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2607 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2608 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2609 with $), a register (a few standard names starting with $), or an actual\n\
2610 variable in the program being debugged. EXP is any valid expression.\n\
2611 This may usually be abbreviated to simply \"set\"."),
2614 c
= add_com ("print", class_vars
, print_command
, _("\
2615 Print value of expression EXP.\n\
2616 Variables accessible are those of the lexical environment of the selected\n\
2617 stack frame, plus all those whose scope is global or an entire file.\n\
2619 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2620 $$NUM refers to NUM'th value back from the last one.\n\
2621 Names starting with $ refer to registers (with the values they would have\n\
2622 if the program were to return to the stack frame now selected, restoring\n\
2623 all registers saved by frames farther in) or else to debugger\n\
2624 \"convenience\" variables (any such name not a known register).\n\
2625 Use assignment expressions to give values to convenience variables.\n\
2627 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2628 @ is a binary operator for treating consecutive data objects\n\
2629 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2630 element is FOO, whose second element is stored in the space following\n\
2631 where FOO is stored, etc. FOO must be an expression whose value\n\
2632 resides in memory.\n\
2634 EXP may be preceded with /FMT, where FMT is a format letter\n\
2635 but no count or size letter (see \"x\" command)."));
2636 set_cmd_completer (c
, expression_completer
);
2637 add_com_alias ("p", "print", class_vars
, 1);
2638 add_com_alias ("inspect", "print", class_vars
, 1);
2640 add_setshow_uinteger_cmd ("max-symbolic-offset", no_class
,
2641 &max_symbolic_offset
, _("\
2642 Set the largest offset that will be printed in <symbol+1234> form."), _("\
2643 Show the largest offset that will be printed in <symbol+1234> form."), _("\
2644 Tell GDB to only display the symbolic form of an address if the\n\
2645 offset between the closest earlier symbol and the address is less than\n\
2646 the specified maximum offset. The default is \"unlimited\", which tells GDB\n\
2647 to always print the symbolic form of an address if any symbol precedes\n\
2648 it. Zero is equivalent to \"unlimited\"."),
2650 show_max_symbolic_offset
,
2651 &setprintlist
, &showprintlist
);
2652 add_setshow_boolean_cmd ("symbol-filename", no_class
,
2653 &print_symbol_filename
, _("\
2654 Set printing of source filename and line number with <symbol>."), _("\
2655 Show printing of source filename and line number with <symbol>."), NULL
,
2657 show_print_symbol_filename
,
2658 &setprintlist
, &showprintlist
);
2660 add_com ("eval", no_class
, eval_command
, _("\
2661 Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\
2662 a command line, and call it."));