1 /* Print values for GNU debugger GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
5 2008 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "gdb_string.h"
29 #include "expression.h"
33 #include "breakpoint.h"
37 #include "symfile.h" /* for overlay functions */
38 #include "objfiles.h" /* ditto */
39 #include "completer.h" /* for completion functions */
41 #include "gdb_assert.h"
48 #include "tui/tui.h" /* For tui_active et.al. */
51 #if defined(__MINGW32__)
52 # define USE_PRINTF_I64 1
53 # define PRINTF_HAS_LONG_LONG
55 # define USE_PRINTF_I64 0
58 extern int asm_demangle
; /* Whether to demangle syms in asm printouts */
67 /* Last specified output format. */
69 static char last_format
= 'x';
71 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
73 static char last_size
= 'w';
75 /* Default address to examine next. */
77 static CORE_ADDR next_address
;
79 /* Number of delay instructions following current disassembled insn. */
81 static int branch_delay_insns
;
83 /* Last address examined. */
85 static CORE_ADDR last_examine_address
;
87 /* Contents of last address examined.
88 This is not valid past the end of the `x' command! */
90 static struct value
*last_examine_value
;
92 /* Largest offset between a symbolic value and an address, that will be
93 printed as `0x1234 <symbol+offset>'. */
95 static unsigned int max_symbolic_offset
= UINT_MAX
;
97 show_max_symbolic_offset (struct ui_file
*file
, int from_tty
,
98 struct cmd_list_element
*c
, const char *value
)
100 fprintf_filtered (file
, _("\
101 The largest offset that will be printed in <symbol+1234> form is %s.\n"),
105 /* Append the source filename and linenumber of the symbol when
106 printing a symbolic value as `<symbol at filename:linenum>' if set. */
107 static int print_symbol_filename
= 0;
109 show_print_symbol_filename (struct ui_file
*file
, int from_tty
,
110 struct cmd_list_element
*c
, const char *value
)
112 fprintf_filtered (file
, _("\
113 Printing of source filename and line number with <symbol> is %s.\n"),
117 /* Number of auto-display expression currently being displayed.
118 So that we can disable it if we get an error or a signal within it.
119 -1 when not doing one. */
121 int current_display_number
;
125 /* Chain link to next auto-display item. */
126 struct display
*next
;
127 /* Expression to be evaluated and displayed. */
128 struct expression
*exp
;
129 /* Item number of this auto-display item. */
131 /* Display format specified. */
132 struct format_data format
;
133 /* Innermost block required by this expression when evaluated */
135 /* Status of this display (enabled or disabled) */
139 /* Chain of expressions whose values should be displayed
140 automatically each time the program stops. */
142 static struct display
*display_chain
;
144 static int display_number
;
146 /* Prototypes for exported functions. */
148 void output_command (char *, int);
150 void _initialize_printcmd (void);
152 /* Prototypes for local functions. */
154 static void do_one_display (struct display
*);
157 /* Decode a format specification. *STRING_PTR should point to it.
158 OFORMAT and OSIZE are used as defaults for the format and size
159 if none are given in the format specification.
160 If OSIZE is zero, then the size field of the returned value
161 should be set only if a size is explicitly specified by the
163 The structure returned describes all the data
164 found in the specification. In addition, *STRING_PTR is advanced
165 past the specification and past all whitespace following it. */
167 static struct format_data
168 decode_format (char **string_ptr
, int oformat
, int osize
)
170 struct format_data val
;
171 char *p
= *string_ptr
;
177 if (*p
>= '0' && *p
<= '9')
178 val
.count
= atoi (p
);
179 while (*p
>= '0' && *p
<= '9')
182 /* Now process size or format letters that follow. */
186 if (*p
== 'b' || *p
== 'h' || *p
== 'w' || *p
== 'g')
188 else if (*p
>= 'a' && *p
<= 'z')
194 while (*p
== ' ' || *p
== '\t')
198 /* Set defaults for format and size if not specified. */
199 if (val
.format
== '?')
203 /* Neither has been specified. */
204 val
.format
= oformat
;
208 /* If a size is specified, any format makes a reasonable
209 default except 'i'. */
210 val
.format
= oformat
== 'i' ? 'x' : oformat
;
212 else if (val
.size
== '?')
217 /* Pick the appropriate size for an address. */
218 if (gdbarch_ptr_bit (current_gdbarch
) == 64)
219 val
.size
= osize
? 'g' : osize
;
220 else if (gdbarch_ptr_bit (current_gdbarch
) == 32)
221 val
.size
= osize
? 'w' : osize
;
222 else if (gdbarch_ptr_bit (current_gdbarch
) == 16)
223 val
.size
= osize
? 'h' : osize
;
225 /* Bad value for gdbarch_ptr_bit. */
226 internal_error (__FILE__
, __LINE__
,
227 _("failed internal consistency check"));
230 /* Floating point has to be word or giantword. */
231 if (osize
== 'w' || osize
== 'g')
234 /* Default it to giantword if the last used size is not
236 val
.size
= osize
? 'g' : osize
;
239 /* Characters default to one byte. */
240 val
.size
= osize
? 'b' : osize
;
243 /* The default is the size most recently specified. */
250 /* Print value VAL on stream according to OPTIONS.
251 Do not end with a newline.
252 SIZE is the letter for the size of datum being printed.
253 This is used to pad hex numbers so they line up. SIZE is 0
254 for print / output and set for examine. */
257 print_formatted (struct value
*val
, int size
,
258 const struct value_print_options
*options
,
259 struct ui_file
*stream
)
261 struct type
*type
= check_typedef (value_type (val
));
262 int len
= TYPE_LENGTH (type
);
264 if (VALUE_LVAL (val
) == lval_memory
)
265 next_address
= VALUE_ADDRESS (val
) + len
;
269 switch (options
->format
)
272 /* FIXME: Need to handle wchar_t's here... */
273 next_address
= VALUE_ADDRESS (val
)
274 + val_print_string (VALUE_ADDRESS (val
), -1, 1, stream
,
279 /* We often wrap here if there are long symbolic names. */
281 next_address
= (VALUE_ADDRESS (val
)
282 + gdb_print_insn (VALUE_ADDRESS (val
), stream
,
283 &branch_delay_insns
));
288 if (options
->format
== 0 || options
->format
== 's'
289 || TYPE_CODE (type
) == TYPE_CODE_REF
290 || TYPE_CODE (type
) == TYPE_CODE_ARRAY
291 || TYPE_CODE (type
) == TYPE_CODE_STRING
292 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
293 || TYPE_CODE (type
) == TYPE_CODE_UNION
294 || TYPE_CODE (type
) == TYPE_CODE_NAMESPACE
)
295 value_print (val
, stream
, options
);
297 /* User specified format, so don't look to the the type to
298 tell us what to do. */
299 print_scalar_formatted (value_contents (val
), type
,
300 options
, size
, stream
);
303 /* Return builtin floating point type of same length as TYPE.
304 If no such type is found, return TYPE itself. */
306 float_type_from_length (struct gdbarch
*gdbarch
, struct type
*type
)
308 const struct builtin_type
*builtin
= builtin_type (gdbarch
);
309 unsigned int len
= TYPE_LENGTH (type
);
311 if (len
== TYPE_LENGTH (builtin
->builtin_float
))
312 type
= builtin
->builtin_float
;
313 else if (len
== TYPE_LENGTH (builtin
->builtin_double
))
314 type
= builtin
->builtin_double
;
315 else if (len
== TYPE_LENGTH (builtin
->builtin_long_double
))
316 type
= builtin
->builtin_long_double
;
321 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
322 according to OPTIONS and SIZE on STREAM.
323 Formats s and i are not supported at this level.
325 This is how the elements of an array or structure are printed
329 print_scalar_formatted (const void *valaddr
, struct type
*type
,
330 const struct value_print_options
*options
,
331 int size
, struct ui_file
*stream
)
333 LONGEST val_long
= 0;
334 unsigned int len
= TYPE_LENGTH (type
);
335 enum bfd_endian byte_order
= gdbarch_byte_order (current_gdbarch
);
337 /* If we get here with a string format, try again without it. Go
338 all the way back to the language printers, which may call us
340 if (options
->format
== 's')
342 struct value_print_options opts
= *options
;
345 val_print (type
, valaddr
, 0, 0, stream
, 0, &opts
,
350 if (len
> sizeof(LONGEST
) &&
351 (TYPE_CODE (type
) == TYPE_CODE_INT
352 || TYPE_CODE (type
) == TYPE_CODE_ENUM
))
354 switch (options
->format
)
357 print_octal_chars (stream
, valaddr
, len
, byte_order
);
361 print_decimal_chars (stream
, valaddr
, len
, byte_order
);
364 print_binary_chars (stream
, valaddr
, len
, byte_order
);
367 print_hex_chars (stream
, valaddr
, len
, byte_order
);
370 print_char_chars (stream
, valaddr
, len
, byte_order
);
377 if (options
->format
!= 'f')
378 val_long
= unpack_long (type
, valaddr
);
380 /* If the value is a pointer, and pointers and addresses are not the
381 same, then at this point, the value's length (in target bytes) is
382 gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
383 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
384 len
= gdbarch_addr_bit (current_gdbarch
) / TARGET_CHAR_BIT
;
386 /* If we are printing it as unsigned, truncate it in case it is actually
387 a negative signed value (e.g. "print/u (short)-1" should print 65535
388 (if shorts are 16 bits) instead of 4294967295). */
389 if (options
->format
!= 'd')
391 if (len
< sizeof (LONGEST
))
392 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
395 switch (options
->format
)
400 /* No size specified, like in print. Print varying # of digits. */
401 print_longest (stream
, 'x', 1, val_long
);
410 print_longest (stream
, size
, 1, val_long
);
413 error (_("Undefined output size \"%c\"."), size
);
418 print_longest (stream
, 'd', 1, val_long
);
422 print_longest (stream
, 'u', 0, val_long
);
427 print_longest (stream
, 'o', 1, val_long
);
429 fprintf_filtered (stream
, "0");
434 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
435 print_address (addr
, stream
);
441 struct value_print_options opts
= *options
;
443 if (TYPE_UNSIGNED (type
))
444 value_print (value_from_longest (builtin_type_true_unsigned_char
,
448 value_print (value_from_longest (builtin_type_true_char
, val_long
),
454 type
= float_type_from_length (current_gdbarch
, type
);
455 print_floating (valaddr
, type
, stream
);
459 internal_error (__FILE__
, __LINE__
,
460 _("failed internal consistency check"));
463 /* Binary; 't' stands for "two". */
465 char bits
[8 * (sizeof val_long
) + 1];
466 char buf
[8 * (sizeof val_long
) + 32];
471 width
= 8 * (sizeof val_long
);
488 error (_("Undefined output size \"%c\"."), size
);
494 bits
[width
] = (val_long
& 1) ? '1' : '0';
499 while (*cp
&& *cp
== '0')
505 fputs_filtered (buf
, stream
);
510 error (_("Undefined output format \"%c\"."), options
->format
);
514 /* Specify default address for `x' command.
515 The `info lines' command uses this. */
518 set_next_address (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
520 struct type
*ptr_type
= builtin_type (gdbarch
)->builtin_data_ptr
;
524 /* Make address available to the user as $_. */
525 set_internalvar (lookup_internalvar ("_"),
526 value_from_pointer (ptr_type
, addr
));
529 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
530 after LEADIN. Print nothing if no symbolic name is found nearby.
531 Optionally also print source file and line number, if available.
532 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
533 or to interpret it as a possible C++ name and convert it back to source
534 form. However note that DO_DEMANGLE can be overridden by the specific
535 settings of the demangle and asm_demangle variables. */
538 print_address_symbolic (CORE_ADDR addr
, struct ui_file
*stream
,
539 int do_demangle
, char *leadin
)
542 char *filename
= NULL
;
547 /* Throw away both name and filename. */
548 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
549 make_cleanup (free_current_contents
, &filename
);
551 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
,
552 &filename
, &line
, &unmapped
))
554 do_cleanups (cleanup_chain
);
558 fputs_filtered (leadin
, stream
);
560 fputs_filtered ("<*", stream
);
562 fputs_filtered ("<", stream
);
563 fputs_filtered (name
, stream
);
565 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
567 /* Append source filename and line number if desired. Give specific
568 line # of this addr, if we have it; else line # of the nearest symbol. */
569 if (print_symbol_filename
&& filename
!= NULL
)
572 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
574 fprintf_filtered (stream
, " in %s", filename
);
577 fputs_filtered ("*>", stream
);
579 fputs_filtered (">", stream
);
581 do_cleanups (cleanup_chain
);
584 /* Given an address ADDR return all the elements needed to print the
585 address in a symbolic form. NAME can be mangled or not depending
586 on DO_DEMANGLE (and also on the asm_demangle global variable,
587 manipulated via ''set print asm-demangle''). Return 0 in case of
588 success, when all the info in the OUT paramters is valid. Return 1
591 build_address_symbolic (CORE_ADDR addr
, /* IN */
592 int do_demangle
, /* IN */
593 char **name
, /* OUT */
594 int *offset
, /* OUT */
595 char **filename
, /* OUT */
597 int *unmapped
) /* OUT */
599 struct minimal_symbol
*msymbol
;
600 struct symbol
*symbol
;
601 CORE_ADDR name_location
= 0;
602 struct obj_section
*section
= NULL
;
603 char *name_temp
= "";
605 /* Let's say it is unmapped. */
608 /* Determine if the address is in an overlay, and whether it is
610 if (overlay_debugging
)
612 section
= find_pc_overlay (addr
);
613 if (pc_in_unmapped_range (addr
, section
))
616 addr
= overlay_mapped_address (addr
, section
);
620 /* First try to find the address in the symbol table, then
621 in the minsyms. Take the closest one. */
623 /* This is defective in the sense that it only finds text symbols. So
624 really this is kind of pointless--we should make sure that the
625 minimal symbols have everything we need (by changing that we could
626 save some memory, but for many debug format--ELF/DWARF or
627 anything/stabs--it would be inconvenient to eliminate those minimal
629 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
630 symbol
= find_pc_sect_function (addr
, section
);
634 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
635 if (do_demangle
|| asm_demangle
)
636 name_temp
= SYMBOL_PRINT_NAME (symbol
);
638 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
643 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
645 /* The msymbol is closer to the address than the symbol;
646 use the msymbol instead. */
648 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
649 if (do_demangle
|| asm_demangle
)
650 name_temp
= SYMBOL_PRINT_NAME (msymbol
);
652 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
655 if (symbol
== NULL
&& msymbol
== NULL
)
658 /* If the nearest symbol is too far away, don't print anything symbolic. */
660 /* For when CORE_ADDR is larger than unsigned int, we do math in
661 CORE_ADDR. But when we detect unsigned wraparound in the
662 CORE_ADDR math, we ignore this test and print the offset,
663 because addr+max_symbolic_offset has wrapped through the end
664 of the address space back to the beginning, giving bogus comparison. */
665 if (addr
> name_location
+ max_symbolic_offset
666 && name_location
+ max_symbolic_offset
> name_location
)
669 *offset
= addr
- name_location
;
671 *name
= xstrdup (name_temp
);
673 if (print_symbol_filename
)
675 struct symtab_and_line sal
;
677 sal
= find_pc_sect_line (addr
, section
, 0);
681 *filename
= xstrdup (sal
.symtab
->filename
);
689 /* Print address ADDR symbolically on STREAM.
690 First print it as a number. Then perhaps print
691 <SYMBOL + OFFSET> after the number. */
694 print_address (CORE_ADDR addr
, struct ui_file
*stream
)
696 fputs_filtered (paddress (addr
), stream
);
697 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
700 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
701 controls whether to print the symbolic name "raw" or demangled.
702 Global setting "addressprint" controls whether to print hex address
706 print_address_demangle (CORE_ADDR addr
, struct ui_file
*stream
,
709 struct value_print_options opts
;
710 get_user_print_options (&opts
);
713 fprintf_filtered (stream
, "0");
715 else if (opts
.addressprint
)
717 fputs_filtered (paddress (addr
), stream
);
718 print_address_symbolic (addr
, stream
, do_demangle
, " ");
722 print_address_symbolic (addr
, stream
, do_demangle
, "");
727 /* These are the types that $__ will get after an examine command of one
730 static struct type
*examine_i_type
;
732 static struct type
*examine_b_type
;
733 static struct type
*examine_h_type
;
734 static struct type
*examine_w_type
;
735 static struct type
*examine_g_type
;
737 /* Examine data at address ADDR in format FMT.
738 Fetch it from memory and print on gdb_stdout. */
741 do_examine (struct format_data fmt
, CORE_ADDR addr
)
746 struct type
*val_type
= NULL
;
749 struct value_print_options opts
;
756 /* String or instruction format implies fetch single bytes
757 regardless of the specified size. */
758 if (format
== 's' || format
== 'i')
762 val_type
= examine_i_type
;
763 else if (size
== 'b')
764 val_type
= examine_b_type
;
765 else if (size
== 'h')
766 val_type
= examine_h_type
;
767 else if (size
== 'w')
768 val_type
= examine_w_type
;
769 else if (size
== 'g')
770 val_type
= examine_g_type
;
777 if (format
== 's' || format
== 'i')
780 get_formatted_print_options (&opts
, format
);
782 /* Print as many objects as specified in COUNT, at most maxelts per line,
783 with the address of the next one at the start of each line. */
788 print_address (next_address
, gdb_stdout
);
789 printf_filtered (":");
794 printf_filtered ("\t");
795 /* Note that print_formatted sets next_address for the next
797 last_examine_address
= next_address
;
799 if (last_examine_value
)
800 value_free (last_examine_value
);
802 /* The value to be displayed is not fetched greedily.
803 Instead, to avoid the possibility of a fetched value not
804 being used, its retrieval is delayed until the print code
805 uses it. When examining an instruction stream, the
806 disassembler will perform its own memory fetch using just
807 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
808 the disassembler be modified so that LAST_EXAMINE_VALUE
809 is left with the byte sequence from the last complete
810 instruction fetched from memory? */
811 last_examine_value
= value_at_lazy (val_type
, next_address
);
813 if (last_examine_value
)
814 release_value (last_examine_value
);
816 print_formatted (last_examine_value
, size
, &opts
, gdb_stdout
);
818 /* Display any branch delay slots following the final insn. */
819 if (format
== 'i' && count
== 1)
820 count
+= branch_delay_insns
;
822 printf_filtered ("\n");
823 gdb_flush (gdb_stdout
);
828 validate_format (struct format_data fmt
, char *cmdname
)
831 error (_("Size letters are meaningless in \"%s\" command."), cmdname
);
833 error (_("Item count other than 1 is meaningless in \"%s\" command."),
835 if (fmt
.format
== 'i')
836 error (_("Format letter \"%c\" is meaningless in \"%s\" command."),
837 fmt
.format
, cmdname
);
840 /* Evaluate string EXP as an expression in the current language and
841 print the resulting value. EXP may contain a format specifier as the
842 first argument ("/x myvar" for example, to print myvar in hex). */
845 print_command_1 (char *exp
, int inspect
, int voidprint
)
847 struct expression
*expr
;
848 struct cleanup
*old_chain
= 0;
851 struct format_data fmt
;
854 if (exp
&& *exp
== '/')
857 fmt
= decode_format (&exp
, last_format
, 0);
858 validate_format (fmt
, "print");
859 last_format
= format
= fmt
.format
;
871 expr
= parse_expression (exp
);
872 old_chain
= make_cleanup (free_current_contents
, &expr
);
874 val
= evaluate_expression (expr
);
877 val
= access_value_history (0);
879 if (voidprint
|| (val
&& value_type (val
) &&
880 TYPE_CODE (value_type (val
)) != TYPE_CODE_VOID
))
882 struct value_print_options opts
;
883 int histindex
= record_latest_value (val
);
886 annotate_value_history_begin (histindex
, value_type (val
));
888 annotate_value_begin (value_type (val
));
891 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"",
893 else if (histindex
>= 0)
894 printf_filtered ("$%d = ", histindex
);
897 annotate_value_history_value ();
899 get_formatted_print_options (&opts
, format
);
900 opts
.inspect_it
= inspect
;
902 print_formatted (val
, fmt
.size
, &opts
, gdb_stdout
);
903 printf_filtered ("\n");
906 annotate_value_history_end ();
908 annotate_value_end ();
911 printf_unfiltered ("\") )\030");
915 do_cleanups (old_chain
);
919 print_command (char *exp
, int from_tty
)
921 print_command_1 (exp
, 0, 1);
924 /* Same as print, except in epoch, it gets its own window. */
926 inspect_command (char *exp
, int from_tty
)
928 extern int epoch_interface
;
930 print_command_1 (exp
, epoch_interface
, 1);
933 /* Same as print, except it doesn't print void results. */
935 call_command (char *exp
, int from_tty
)
937 print_command_1 (exp
, 0, 0);
941 output_command (char *exp
, int from_tty
)
943 struct expression
*expr
;
944 struct cleanup
*old_chain
;
947 struct format_data fmt
;
948 struct value_print_options opts
;
952 if (exp
&& *exp
== '/')
955 fmt
= decode_format (&exp
, 0, 0);
956 validate_format (fmt
, "output");
960 expr
= parse_expression (exp
);
961 old_chain
= make_cleanup (free_current_contents
, &expr
);
963 val
= evaluate_expression (expr
);
965 annotate_value_begin (value_type (val
));
967 get_formatted_print_options (&opts
, format
);
968 print_formatted (val
, fmt
.size
, &opts
, gdb_stdout
);
970 annotate_value_end ();
973 gdb_flush (gdb_stdout
);
975 do_cleanups (old_chain
);
979 set_command (char *exp
, int from_tty
)
981 struct expression
*expr
= parse_expression (exp
);
982 struct cleanup
*old_chain
=
983 make_cleanup (free_current_contents
, &expr
);
984 evaluate_expression (expr
);
985 do_cleanups (old_chain
);
989 sym_info (char *arg
, int from_tty
)
991 struct minimal_symbol
*msymbol
;
992 struct objfile
*objfile
;
993 struct obj_section
*osect
;
994 CORE_ADDR addr
, sect_addr
;
999 error_no_arg (_("address"));
1001 addr
= parse_and_eval_address (arg
);
1002 ALL_OBJSECTIONS (objfile
, osect
)
1004 /* Only process each object file once, even if there's a separate
1006 if (objfile
->separate_debug_objfile_backlink
)
1009 sect_addr
= overlay_mapped_address (addr
, osect
);
1011 if (obj_section_addr (osect
) <= sect_addr
1012 && sect_addr
< obj_section_endaddr (osect
)
1013 && (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, osect
)))
1016 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1018 printf_filtered ("%s + %u in ",
1019 SYMBOL_PRINT_NAME (msymbol
), offset
);
1021 printf_filtered ("%s in ",
1022 SYMBOL_PRINT_NAME (msymbol
));
1023 if (pc_in_unmapped_range (addr
, osect
))
1024 printf_filtered (_("load address range of "));
1025 if (section_is_overlay (osect
))
1026 printf_filtered (_("%s overlay "),
1027 section_is_mapped (osect
) ? "mapped" : "unmapped");
1028 printf_filtered (_("section %s"), osect
->the_bfd_section
->name
);
1029 printf_filtered ("\n");
1033 printf_filtered (_("No symbol matches %s.\n"), arg
);
1037 address_info (char *exp
, int from_tty
)
1040 struct minimal_symbol
*msymbol
;
1042 struct obj_section
*section
;
1043 CORE_ADDR load_addr
;
1044 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1045 if exp is a field of `this'. */
1048 error (_("Argument required."));
1050 sym
= lookup_symbol (exp
, get_selected_block (0), VAR_DOMAIN
,
1051 &is_a_field_of_this
);
1054 if (is_a_field_of_this
)
1056 printf_filtered ("Symbol \"");
1057 fprintf_symbol_filtered (gdb_stdout
, exp
,
1058 current_language
->la_language
, DMGL_ANSI
);
1059 printf_filtered ("\" is a field of the local class variable ");
1060 if (current_language
->la_language
== language_objc
)
1061 printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
1063 printf_filtered ("`this'\n");
1067 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1069 if (msymbol
!= NULL
)
1071 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1073 printf_filtered ("Symbol \"");
1074 fprintf_symbol_filtered (gdb_stdout
, exp
,
1075 current_language
->la_language
, DMGL_ANSI
);
1076 printf_filtered ("\" is at ");
1077 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1078 printf_filtered (" in a file compiled without debugging");
1079 section
= SYMBOL_OBJ_SECTION (msymbol
);
1080 if (section_is_overlay (section
))
1082 load_addr
= overlay_unmapped_address (load_addr
, section
);
1083 printf_filtered (",\n -- loaded at ");
1084 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1085 printf_filtered (" in overlay section %s",
1086 section
->the_bfd_section
->name
);
1088 printf_filtered (".\n");
1091 error (_("No symbol \"%s\" in current context."), exp
);
1095 printf_filtered ("Symbol \"");
1096 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_PRINT_NAME (sym
),
1097 current_language
->la_language
, DMGL_ANSI
);
1098 printf_filtered ("\" is ");
1099 val
= SYMBOL_VALUE (sym
);
1100 section
= SYMBOL_OBJ_SECTION (sym
);
1102 switch (SYMBOL_CLASS (sym
))
1105 case LOC_CONST_BYTES
:
1106 printf_filtered ("constant");
1110 printf_filtered ("a label at address ");
1111 fputs_filtered (paddress (load_addr
= SYMBOL_VALUE_ADDRESS (sym
)),
1113 if (section_is_overlay (section
))
1115 load_addr
= overlay_unmapped_address (load_addr
, section
);
1116 printf_filtered (",\n -- loaded at ");
1117 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1118 printf_filtered (" in overlay section %s",
1119 section
->the_bfd_section
->name
);
1124 /* FIXME: cagney/2004-01-26: It should be possible to
1125 unconditionally call the SYMBOL_OPS method when available.
1126 Unfortunately DWARF 2 stores the frame-base (instead of the
1127 function) location in a function's symbol. Oops! For the
1128 moment enable this when/where applicable. */
1129 SYMBOL_OPS (sym
)->describe_location (sym
, gdb_stdout
);
1133 if (SYMBOL_IS_ARGUMENT (sym
))
1134 printf_filtered (_("an argument in register %s"),
1135 gdbarch_register_name (current_gdbarch
, val
));
1137 printf_filtered (_("a variable in register %s"),
1138 gdbarch_register_name (current_gdbarch
, val
));
1142 printf_filtered (_("static storage at address "));
1143 fputs_filtered (paddress (load_addr
= SYMBOL_VALUE_ADDRESS (sym
)),
1145 if (section_is_overlay (section
))
1147 load_addr
= overlay_unmapped_address (load_addr
, section
);
1148 printf_filtered (_(",\n -- loaded at "));
1149 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1150 printf_filtered (_(" in overlay section %s"),
1151 section
->the_bfd_section
->name
);
1155 case LOC_REGPARM_ADDR
:
1156 printf_filtered (_("address of an argument in register %s"),
1157 gdbarch_register_name (current_gdbarch
, val
));
1161 printf_filtered (_("an argument at offset %ld"), val
);
1165 printf_filtered (_("a local variable at frame offset %ld"), val
);
1169 printf_filtered (_("a reference argument at offset %ld"), val
);
1173 printf_filtered (_("a typedef"));
1177 printf_filtered (_("a function at address "));
1178 load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1179 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1180 if (section_is_overlay (section
))
1182 load_addr
= overlay_unmapped_address (load_addr
, section
);
1183 printf_filtered (_(",\n -- loaded at "));
1184 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1185 printf_filtered (_(" in overlay section %s"),
1186 section
->the_bfd_section
->name
);
1190 case LOC_UNRESOLVED
:
1192 struct minimal_symbol
*msym
;
1194 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
), NULL
, NULL
);
1196 printf_filtered ("unresolved");
1199 section
= SYMBOL_OBJ_SECTION (msym
);
1200 printf_filtered (_("static storage at address "));
1201 load_addr
= SYMBOL_VALUE_ADDRESS (msym
);
1202 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1203 if (section_is_overlay (section
))
1205 load_addr
= overlay_unmapped_address (load_addr
, section
);
1206 printf_filtered (_(",\n -- loaded at "));
1207 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1208 printf_filtered (_(" in overlay section %s"),
1209 section
->the_bfd_section
->name
);
1215 case LOC_OPTIMIZED_OUT
:
1216 printf_filtered (_("optimized out"));
1220 printf_filtered (_("of unknown (botched) type"));
1223 printf_filtered (".\n");
1228 x_command (char *exp
, int from_tty
)
1230 struct expression
*expr
;
1231 struct format_data fmt
;
1232 struct cleanup
*old_chain
;
1235 fmt
.format
= last_format
;
1236 fmt
.size
= last_size
;
1239 if (exp
&& *exp
== '/')
1242 fmt
= decode_format (&exp
, last_format
, last_size
);
1245 /* If we have an expression, evaluate it and use it as the address. */
1247 if (exp
!= 0 && *exp
!= 0)
1249 expr
= parse_expression (exp
);
1250 /* Cause expression not to be there any more if this command is
1251 repeated with Newline. But don't clobber a user-defined
1252 command's definition. */
1255 old_chain
= make_cleanup (free_current_contents
, &expr
);
1256 val
= evaluate_expression (expr
);
1257 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_REF
)
1258 val
= value_ind (val
);
1259 /* In rvalue contexts, such as this, functions are coerced into
1260 pointers to functions. This makes "x/i main" work. */
1261 if (/* last_format == 'i' && */
1262 TYPE_CODE (value_type (val
)) == TYPE_CODE_FUNC
1263 && VALUE_LVAL (val
) == lval_memory
)
1264 next_address
= VALUE_ADDRESS (val
);
1266 next_address
= value_as_address (val
);
1267 do_cleanups (old_chain
);
1270 do_examine (fmt
, next_address
);
1272 /* If the examine succeeds, we remember its size and format for next
1274 last_size
= fmt
.size
;
1275 last_format
= fmt
.format
;
1277 /* Set a couple of internal variables if appropriate. */
1278 if (last_examine_value
)
1280 /* Make last address examined available to the user as $_. Use
1281 the correct pointer type. */
1282 struct type
*pointer_type
1283 = lookup_pointer_type (value_type (last_examine_value
));
1284 set_internalvar (lookup_internalvar ("_"),
1285 value_from_pointer (pointer_type
,
1286 last_examine_address
));
1288 /* Make contents of last address examined available to the user
1289 as $__. If the last value has not been fetched from memory
1290 then don't fetch it now; instead mark it by voiding the $__
1292 if (value_lazy (last_examine_value
))
1293 set_internalvar (lookup_internalvar ("__"),
1294 allocate_value (builtin_type_void
));
1296 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1301 /* Add an expression to the auto-display chain.
1302 Specify the expression. */
1305 display_command (char *exp
, int from_tty
)
1307 struct format_data fmt
;
1308 struct expression
*expr
;
1309 struct display
*new;
1313 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1315 if (tui_active
&& exp
!= NULL
&& *exp
== '$')
1316 display_it
= (tui_set_layout_for_display_command (exp
) == TUI_FAILURE
);
1330 fmt
= decode_format (&exp
, 0, 0);
1331 if (fmt
.size
&& fmt
.format
== 0)
1333 if (fmt
.format
== 'i' || fmt
.format
== 's')
1343 innermost_block
= 0;
1344 expr
= parse_expression (exp
);
1346 new = (struct display
*) xmalloc (sizeof (struct display
));
1349 new->block
= innermost_block
;
1350 new->next
= display_chain
;
1351 new->number
= ++display_number
;
1354 display_chain
= new;
1356 if (from_tty
&& target_has_execution
)
1357 do_one_display (new);
1364 free_display (struct display
*d
)
1370 /* Clear out the display_chain. Done when new symtabs are loaded,
1371 since this invalidates the types stored in many expressions. */
1374 clear_displays (void)
1378 while ((d
= display_chain
) != NULL
)
1381 display_chain
= d
->next
;
1386 /* Delete the auto-display number NUM. */
1389 delete_display (int num
)
1391 struct display
*d1
, *d
;
1394 error (_("No display number %d."), num
);
1396 if (display_chain
->number
== num
)
1399 display_chain
= d1
->next
;
1403 for (d
= display_chain
;; d
= d
->next
)
1406 error (_("No display number %d."), num
);
1407 if (d
->next
->number
== num
)
1417 /* Delete some values from the auto-display chain.
1418 Specify the element numbers. */
1421 undisplay_command (char *args
, int from_tty
)
1429 if (query ("Delete all auto-display expressions? "))
1438 while (*p1
>= '0' && *p1
<= '9')
1440 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1441 error (_("Arguments must be display numbers."));
1445 delete_display (num
);
1448 while (*p
== ' ' || *p
== '\t')
1454 /* Display a single auto-display.
1455 Do nothing if the display cannot be printed in the current context,
1456 or if the display is disabled. */
1459 do_one_display (struct display
*d
)
1461 int within_current_scope
;
1463 if (d
->enabled_p
== 0)
1467 within_current_scope
= contained_in (get_selected_block (0), d
->block
);
1469 within_current_scope
= 1;
1470 if (!within_current_scope
)
1473 current_display_number
= d
->number
;
1475 annotate_display_begin ();
1476 printf_filtered ("%d", d
->number
);
1477 annotate_display_number_end ();
1478 printf_filtered (": ");
1484 annotate_display_format ();
1486 printf_filtered ("x/");
1487 if (d
->format
.count
!= 1)
1488 printf_filtered ("%d", d
->format
.count
);
1489 printf_filtered ("%c", d
->format
.format
);
1490 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1491 printf_filtered ("%c", d
->format
.size
);
1492 printf_filtered (" ");
1494 annotate_display_expression ();
1496 print_expression (d
->exp
, gdb_stdout
);
1497 annotate_display_expression_end ();
1499 if (d
->format
.count
!= 1 || d
->format
.format
== 'i')
1500 printf_filtered ("\n");
1502 printf_filtered (" ");
1504 val
= evaluate_expression (d
->exp
);
1505 addr
= value_as_address (val
);
1506 if (d
->format
.format
== 'i')
1507 addr
= gdbarch_addr_bits_remove (current_gdbarch
, addr
);
1509 annotate_display_value ();
1511 do_examine (d
->format
, addr
);
1515 struct value_print_options opts
;
1517 annotate_display_format ();
1519 if (d
->format
.format
)
1520 printf_filtered ("/%c ", d
->format
.format
);
1522 annotate_display_expression ();
1524 print_expression (d
->exp
, gdb_stdout
);
1525 annotate_display_expression_end ();
1527 printf_filtered (" = ");
1529 annotate_display_expression ();
1531 get_formatted_print_options (&opts
, d
->format
.format
);
1532 print_formatted (evaluate_expression (d
->exp
),
1533 d
->format
.size
, &opts
, gdb_stdout
);
1534 printf_filtered ("\n");
1537 annotate_display_end ();
1539 gdb_flush (gdb_stdout
);
1540 current_display_number
= -1;
1543 /* Display all of the values on the auto-display chain which can be
1544 evaluated in the current scope. */
1551 for (d
= display_chain
; d
; d
= d
->next
)
1555 /* Delete the auto-display which we were in the process of displaying.
1556 This is done when there is an error or a signal. */
1559 disable_display (int num
)
1563 for (d
= display_chain
; d
; d
= d
->next
)
1564 if (d
->number
== num
)
1569 printf_unfiltered (_("No display number %d.\n"), num
);
1573 disable_current_display (void)
1575 if (current_display_number
>= 0)
1577 disable_display (current_display_number
);
1578 fprintf_unfiltered (gdb_stderr
, _("\
1579 Disabling display %d to avoid infinite recursion.\n"),
1580 current_display_number
);
1582 current_display_number
= -1;
1586 display_info (char *ignore
, int from_tty
)
1591 printf_unfiltered (_("There are no auto-display expressions now.\n"));
1593 printf_filtered (_("Auto-display expressions now in effect:\n\
1594 Num Enb Expression\n"));
1596 for (d
= display_chain
; d
; d
= d
->next
)
1598 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->enabled_p
]);
1600 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1602 else if (d
->format
.format
)
1603 printf_filtered ("/%c ", d
->format
.format
);
1604 print_expression (d
->exp
, gdb_stdout
);
1605 if (d
->block
&& !contained_in (get_selected_block (0), d
->block
))
1606 printf_filtered (_(" (cannot be evaluated in the current context)"));
1607 printf_filtered ("\n");
1608 gdb_flush (gdb_stdout
);
1613 enable_display (char *args
, int from_tty
)
1622 for (d
= display_chain
; d
; d
= d
->next
)
1629 while (*p1
>= '0' && *p1
<= '9')
1631 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1632 error (_("Arguments must be display numbers."));
1636 for (d
= display_chain
; d
; d
= d
->next
)
1637 if (d
->number
== num
)
1642 printf_unfiltered (_("No display number %d.\n"), num
);
1645 while (*p
== ' ' || *p
== '\t')
1651 disable_display_command (char *args
, int from_tty
)
1659 for (d
= display_chain
; d
; d
= d
->next
)
1666 while (*p1
>= '0' && *p1
<= '9')
1668 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1669 error (_("Arguments must be display numbers."));
1671 disable_display (atoi (p
));
1674 while (*p
== ' ' || *p
== '\t')
1680 /* Print the value in stack frame FRAME of a variable specified by a
1684 print_variable_value (struct symbol
*var
, struct frame_info
*frame
,
1685 struct ui_file
*stream
)
1687 struct value
*val
= read_var_value (var
, frame
);
1688 struct value_print_options opts
;
1690 get_user_print_options (&opts
);
1691 value_print (val
, stream
, &opts
);
1695 printf_command (char *arg
, int from_tty
)
1699 char *string
= NULL
;
1700 struct value
**val_args
;
1702 char *current_substring
;
1704 int allocated_args
= 20;
1705 struct cleanup
*old_cleanups
;
1707 val_args
= xmalloc (allocated_args
* sizeof (struct value
*));
1708 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
1711 error_no_arg (_("format-control string and values to print"));
1713 /* Skip white space before format string */
1714 while (*s
== ' ' || *s
== '\t')
1717 /* A format string should follow, enveloped in double quotes. */
1719 error (_("Bad format string, missing '\"'."));
1721 /* Parse the format-control string and copy it into the string STRING,
1722 processing some kinds of escape sequence. */
1724 f
= string
= (char *) alloca (strlen (s
) + 1);
1732 error (_("Bad format string, non-terminated '\"'."));
1765 /* ??? TODO: handle other escape sequences */
1766 error (_("Unrecognized escape character \\%c in format string."),
1776 /* Skip over " and following space and comma. */
1779 while (*s
== ' ' || *s
== '\t')
1782 if (*s
!= ',' && *s
!= 0)
1783 error (_("Invalid argument syntax"));
1787 while (*s
== ' ' || *s
== '\t')
1790 /* Need extra space for the '\0's. Doubling the size is sufficient. */
1791 substrings
= alloca (strlen (string
) * 2);
1792 current_substring
= substrings
;
1795 /* Now scan the string for %-specs and see what kinds of args they want.
1796 argclass[I] classifies the %-specs so we can give printf_filtered
1797 something of the right size. */
1801 int_arg
, long_arg
, long_long_arg
, ptr_arg
, string_arg
,
1802 double_arg
, long_double_arg
, decfloat_arg
1804 enum argclass
*argclass
;
1805 enum argclass this_argclass
;
1810 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
1817 int seen_hash
= 0, seen_zero
= 0, lcount
= 0, seen_prec
= 0;
1818 int seen_space
= 0, seen_plus
= 0;
1819 int seen_big_l
= 0, seen_h
= 0, seen_big_h
= 0;
1820 int seen_big_d
= 0, seen_double_big_d
= 0;
1823 /* Check the validity of the format specifier, and work
1824 out what argument it expects. We only accept C89
1825 format strings, with the exception of long long (which
1826 we autoconf for). */
1828 /* Skip over "%%". */
1835 /* The first part of a format specifier is a set of flag
1837 while (strchr ("0-+ #", *f
))
1850 /* The next part of a format specifier is a width. */
1851 while (strchr ("0123456789", *f
))
1854 /* The next part of a format specifier is a precision. */
1859 while (strchr ("0123456789", *f
))
1863 /* The next part of a format specifier is a length modifier. */
1884 /* Decimal32 modifier. */
1890 /* Decimal64 and Decimal128 modifiers. */
1895 /* Check for a Decimal128. */
1899 seen_double_big_d
= 1;
1915 if (seen_space
|| seen_plus
)
1922 this_argclass
= int_arg
;
1923 else if (lcount
== 1)
1924 this_argclass
= long_arg
;
1926 this_argclass
= long_long_arg
;
1933 this_argclass
= int_arg
;
1934 if (lcount
|| seen_h
|| seen_big_l
)
1936 if (seen_prec
|| seen_zero
|| seen_space
|| seen_plus
)
1941 this_argclass
= ptr_arg
;
1942 if (lcount
|| seen_h
|| seen_big_l
)
1944 if (seen_prec
|| seen_zero
|| seen_space
|| seen_plus
)
1949 this_argclass
= string_arg
;
1950 if (lcount
|| seen_h
|| seen_big_l
)
1952 if (seen_zero
|| seen_space
|| seen_plus
)
1961 if (seen_big_h
|| seen_big_d
|| seen_double_big_d
)
1962 this_argclass
= decfloat_arg
;
1963 else if (seen_big_l
)
1964 this_argclass
= long_double_arg
;
1966 this_argclass
= double_arg
;
1968 if (lcount
|| seen_h
)
1973 error (_("`*' not supported for precision or width in printf"));
1976 error (_("Format specifier `n' not supported in printf"));
1979 error (_("Incomplete format specifier at end of format string"));
1982 error (_("Unrecognized format specifier '%c' in printf"), *f
);
1986 error (_("Inappropriate modifiers to format specifier '%c' in printf"),
1991 if (lcount
> 1 && USE_PRINTF_I64
)
1993 /* Windows' printf does support long long, but not the usual way.
1994 Convert %lld to %I64d. */
1995 int length_before_ll
= f
- last_arg
- 1 - lcount
;
1996 strncpy (current_substring
, last_arg
, length_before_ll
);
1997 strcpy (current_substring
+ length_before_ll
, "I64");
1998 current_substring
[length_before_ll
+ 3] =
1999 last_arg
[length_before_ll
+ lcount
];
2000 current_substring
+= length_before_ll
+ 4;
2004 strncpy (current_substring
, last_arg
, f
- last_arg
);
2005 current_substring
+= f
- last_arg
;
2007 *current_substring
++ = '\0';
2009 argclass
[nargs_wanted
++] = this_argclass
;
2012 /* Now, parse all arguments and evaluate them.
2013 Store the VALUEs in VAL_ARGS. */
2018 if (nargs
== allocated_args
)
2019 val_args
= (struct value
**) xrealloc ((char *) val_args
,
2020 (allocated_args
*= 2)
2021 * sizeof (struct value
*));
2023 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2031 if (nargs
!= nargs_wanted
)
2032 error (_("Wrong number of arguments for specified format-string"));
2034 /* Now actually print them. */
2035 current_substring
= substrings
;
2036 for (i
= 0; i
< nargs
; i
++)
2038 switch (argclass
[i
])
2045 tem
= value_as_address (val_args
[i
]);
2047 /* This is a %s argument. Find the length of the string. */
2052 read_memory (tem
+ j
, &c
, 1);
2057 /* Copy the string contents into a string inside GDB. */
2058 str
= (gdb_byte
*) alloca (j
+ 1);
2060 read_memory (tem
, str
, j
);
2063 printf_filtered (current_substring
, (char *) str
);
2068 struct type
*type
= value_type (val_args
[i
]);
2072 /* If format string wants a float, unchecked-convert the value
2073 to floating point of the same size. */
2074 type
= float_type_from_length (current_gdbarch
, type
);
2075 val
= unpack_double (type
, value_contents (val_args
[i
]), &inv
);
2077 error (_("Invalid floating value found in program."));
2079 printf_filtered (current_substring
, (double) val
);
2082 case long_double_arg
:
2083 #ifdef HAVE_LONG_DOUBLE
2085 struct type
*type
= value_type (val_args
[i
]);
2089 /* If format string wants a float, unchecked-convert the value
2090 to floating point of the same size. */
2091 type
= float_type_from_length (current_gdbarch
, type
);
2092 val
= unpack_double (type
, value_contents (val_args
[i
]), &inv
);
2094 error (_("Invalid floating value found in program."));
2096 printf_filtered (current_substring
, (long double) val
);
2100 error (_("long double not supported in printf"));
2103 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2105 long long val
= value_as_long (val_args
[i
]);
2106 printf_filtered (current_substring
, val
);
2110 error (_("long long not supported in printf"));
2114 int val
= value_as_long (val_args
[i
]);
2115 printf_filtered (current_substring
, val
);
2120 long val
= value_as_long (val_args
[i
]);
2121 printf_filtered (current_substring
, val
);
2125 /* Handles decimal floating values. */
2128 const gdb_byte
*param_ptr
= value_contents (val_args
[i
]);
2129 #if defined (PRINTF_HAS_DECFLOAT)
2130 /* If we have native support for Decimal floating
2131 printing, handle it here. */
2132 printf_filtered (current_substring
, param_ptr
);
2135 /* As a workaround until vasprintf has native support for DFP
2136 we convert the DFP values to string and print them using
2137 the %s format specifier. */
2140 int nnull_chars
= 0;
2142 /* Parameter data. */
2143 struct type
*param_type
= value_type (val_args
[i
]);
2144 unsigned int param_len
= TYPE_LENGTH (param_type
);
2146 /* DFP output data. */
2147 struct value
*dfp_value
= NULL
;
2151 struct type
*dfp_type
= NULL
;
2152 char decstr
[MAX_DECIMAL_STRING
];
2154 /* Points to the end of the string so that we can go back
2155 and check for DFP length modifiers. */
2156 eos
= current_substring
+ strlen (current_substring
);
2158 /* Look for the float/double format specifier. */
2159 while (*eos
!= 'f' && *eos
!= 'e' && *eos
!= 'E'
2160 && *eos
!= 'g' && *eos
!= 'G')
2165 /* Search for the '%' char and extract the size and type of
2166 the output decimal value based on its modifiers
2167 (%Hf, %Df, %DDf). */
2168 while (*--sos
!= '%')
2173 dfp_type
= builtin_type (current_gdbarch
)->builtin_decfloat
;
2175 else if (*sos
== 'D' && *(sos
- 1) == 'D')
2178 dfp_type
= builtin_type (current_gdbarch
)->builtin_declong
;
2184 dfp_type
= builtin_type (current_gdbarch
)->builtin_decdouble
;
2188 /* Replace %Hf, %Df and %DDf with %s's. */
2191 /* Go through the whole format string and pull the correct
2192 number of chars back to compensate for the change in the
2193 format specifier. */
2194 while (nnull_chars
< nargs
- i
)
2202 /* Conversion between different DFP types. */
2203 if (TYPE_CODE (param_type
) == TYPE_CODE_DECFLOAT
)
2204 decimal_convert (param_ptr
, param_len
, dec
, dfp_len
);
2206 /* If this is a non-trivial conversion, just output 0.
2207 A correct converted value can be displayed by explicitly
2208 casting to a DFP type. */
2209 decimal_from_string (dec
, dfp_len
, "0");
2211 dfp_value
= value_from_decfloat (dfp_type
, dec
);
2213 dfp_ptr
= (gdb_byte
*) value_contents (dfp_value
);
2215 decimal_to_string (dfp_ptr
, dfp_len
, decstr
);
2217 /* Print the DFP value. */
2218 printf_filtered (current_substring
, decstr
);
2226 /* We avoid the host's %p because pointers are too
2227 likely to be the wrong size. The only interesting
2228 modifier for %p is a width; extract that, and then
2229 handle %p as glibc would: %#x or a literal "(nil)". */
2231 char *p
, *fmt
, *fmt_p
;
2232 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2233 long long val
= value_as_long (val_args
[i
]);
2235 long val
= value_as_long (val_args
[i
]);
2238 fmt
= alloca (strlen (current_substring
) + 5);
2240 /* Copy up to the leading %. */
2241 p
= current_substring
;
2245 int is_percent
= (*p
== '%');
2259 /* Copy any width. */
2260 while (*p
>= '0' && *p
< '9')
2263 gdb_assert (*p
== 'p' && *(p
+ 1) == '\0');
2266 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2272 printf_filtered (fmt
, val
);
2278 printf_filtered (fmt
, "(nil)");
2284 internal_error (__FILE__
, __LINE__
,
2285 _("failed internal consistency check"));
2287 /* Skip to the next substring. */
2288 current_substring
+= strlen (current_substring
) + 1;
2290 /* Print the portion of the format string after the last argument. */
2291 puts_filtered (last_arg
);
2293 do_cleanups (old_cleanups
);
2297 _initialize_printcmd (void)
2299 struct cmd_list_element
*c
;
2301 current_display_number
= -1;
2303 add_info ("address", address_info
,
2304 _("Describe where symbol SYM is stored."));
2306 add_info ("symbol", sym_info
, _("\
2307 Describe what symbol is at location ADDR.\n\
2308 Only for symbols with fixed locations (global or static scope)."));
2310 add_com ("x", class_vars
, x_command
, _("\
2311 Examine memory: x/FMT ADDRESS.\n\
2312 ADDRESS is an expression for the memory address to examine.\n\
2313 FMT is a repeat count followed by a format letter and a size letter.\n\
2314 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2315 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\
2316 Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2317 The specified number of objects of the specified size are printed\n\
2318 according to the format.\n\n\
2319 Defaults for format and size letters are those previously used.\n\
2320 Default count is 1. Default address is following last thing printed\n\
2321 with this command or \"print\"."));
2324 add_com ("whereis", class_vars
, whereis_command
,
2325 _("Print line number and file of definition of variable."));
2328 add_info ("display", display_info
, _("\
2329 Expressions to display when program stops, with code numbers."));
2331 add_cmd ("undisplay", class_vars
, undisplay_command
, _("\
2332 Cancel some expressions to be displayed when program stops.\n\
2333 Arguments are the code numbers of the expressions to stop displaying.\n\
2334 No argument means cancel all automatic-display expressions.\n\
2335 \"delete display\" has the same effect as this command.\n\
2336 Do \"info display\" to see current list of code numbers."),
2339 add_com ("display", class_vars
, display_command
, _("\
2340 Print value of expression EXP each time the program stops.\n\
2341 /FMT may be used before EXP as in the \"print\" command.\n\
2342 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2343 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2344 and examining is done as in the \"x\" command.\n\n\
2345 With no argument, display all currently requested auto-display expressions.\n\
2346 Use \"undisplay\" to cancel display requests previously made."));
2348 add_cmd ("display", class_vars
, enable_display
, _("\
2349 Enable some expressions to be displayed when program stops.\n\
2350 Arguments are the code numbers of the expressions to resume displaying.\n\
2351 No argument means enable all automatic-display expressions.\n\
2352 Do \"info display\" to see current list of code numbers."), &enablelist
);
2354 add_cmd ("display", class_vars
, disable_display_command
, _("\
2355 Disable some expressions to be displayed when program stops.\n\
2356 Arguments are the code numbers of the expressions to stop displaying.\n\
2357 No argument means disable all automatic-display expressions.\n\
2358 Do \"info display\" to see current list of code numbers."), &disablelist
);
2360 add_cmd ("display", class_vars
, undisplay_command
, _("\
2361 Cancel some expressions to be displayed when program stops.\n\
2362 Arguments are the code numbers of the expressions to stop displaying.\n\
2363 No argument means cancel all automatic-display expressions.\n\
2364 Do \"info display\" to see current list of code numbers."), &deletelist
);
2366 add_com ("printf", class_vars
, printf_command
, _("\
2367 printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2368 This is useful for formatted output in user-defined commands."));
2370 add_com ("output", class_vars
, output_command
, _("\
2371 Like \"print\" but don't put in value history and don't print newline.\n\
2372 This is useful in user-defined commands."));
2374 add_prefix_cmd ("set", class_vars
, set_command
, _("\
2375 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2376 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2377 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2378 with $), a register (a few standard names starting with $), or an actual\n\
2379 variable in the program being debugged. EXP is any valid expression.\n\
2380 Use \"set variable\" for variables with names identical to set subcommands.\n\
2382 With a subcommand, this command modifies parts of the gdb environment.\n\
2383 You can see these environment settings with the \"show\" command."),
2384 &setlist
, "set ", 1, &cmdlist
);
2386 add_com ("assign", class_vars
, set_command
, _("\
2387 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2388 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2389 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2390 with $), a register (a few standard names starting with $), or an actual\n\
2391 variable in the program being debugged. EXP is any valid expression.\n\
2392 Use \"set variable\" for variables with names identical to set subcommands.\n\
2393 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2394 You can see these environment settings with the \"show\" command."));
2396 /* "call" is the same as "set", but handy for dbx users to call fns. */
2397 c
= add_com ("call", class_vars
, call_command
, _("\
2398 Call a function in the program.\n\
2399 The argument is the function name and arguments, in the notation of the\n\
2400 current working language. The result is printed and saved in the value\n\
2401 history, if it is not void."));
2402 set_cmd_completer (c
, expression_completer
);
2404 add_cmd ("variable", class_vars
, set_command
, _("\
2405 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2406 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2407 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2408 with $), a register (a few standard names starting with $), or an actual\n\
2409 variable in the program being debugged. EXP is any valid expression.\n\
2410 This may usually be abbreviated to simply \"set\"."),
2413 c
= add_com ("print", class_vars
, print_command
, _("\
2414 Print value of expression EXP.\n\
2415 Variables accessible are those of the lexical environment of the selected\n\
2416 stack frame, plus all those whose scope is global or an entire file.\n\
2418 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2419 $$NUM refers to NUM'th value back from the last one.\n\
2420 Names starting with $ refer to registers (with the values they would have\n\
2421 if the program were to return to the stack frame now selected, restoring\n\
2422 all registers saved by frames farther in) or else to debugger\n\
2423 \"convenience\" variables (any such name not a known register).\n\
2424 Use assignment expressions to give values to convenience variables.\n\
2426 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2427 @ is a binary operator for treating consecutive data objects\n\
2428 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2429 element is FOO, whose second element is stored in the space following\n\
2430 where FOO is stored, etc. FOO must be an expression whose value\n\
2431 resides in memory.\n\
2433 EXP may be preceded with /FMT, where FMT is a format letter\n\
2434 but no count or size letter (see \"x\" command)."));
2435 set_cmd_completer (c
, expression_completer
);
2436 add_com_alias ("p", "print", class_vars
, 1);
2438 c
= add_com ("inspect", class_vars
, inspect_command
, _("\
2439 Same as \"print\" command, except that if you are running in the epoch\n\
2440 environment, the value is printed in its own window."));
2441 set_cmd_completer (c
, expression_completer
);
2443 add_setshow_uinteger_cmd ("max-symbolic-offset", no_class
,
2444 &max_symbolic_offset
, _("\
2445 Set the largest offset that will be printed in <symbol+1234> form."), _("\
2446 Show the largest offset that will be printed in <symbol+1234> form."), NULL
,
2448 show_max_symbolic_offset
,
2449 &setprintlist
, &showprintlist
);
2450 add_setshow_boolean_cmd ("symbol-filename", no_class
,
2451 &print_symbol_filename
, _("\
2452 Set printing of source filename and line number with <symbol>."), _("\
2453 Show printing of source filename and line number with <symbol>."), NULL
,
2455 show_print_symbol_filename
,
2456 &setprintlist
, &showprintlist
);
2458 /* For examine/instruction a single byte quantity is specified as
2459 the data. This avoids problems with value_at_lazy() requiring a
2460 valid data type (and rejecting VOID). */
2461 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2463 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2464 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2465 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2466 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);