1 /* Print values for GNU debugger GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
5 2008 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "gdb_string.h"
29 #include "expression.h"
33 #include "breakpoint.h"
37 #include "symfile.h" /* for overlay functions */
38 #include "objfiles.h" /* ditto */
39 #include "completer.h" /* for completion functions */
41 #include "gdb_assert.h"
48 #include "tui/tui.h" /* For tui_active et.al. */
51 #if defined(__MINGW32__) && !defined(PRINTF_HAS_LONG_LONG)
52 # define USE_PRINTF_I64 1
53 # define PRINTF_HAS_LONG_LONG
55 # define USE_PRINTF_I64 0
58 extern int asm_demangle
; /* Whether to demangle syms in asm printouts */
67 /* Last specified output format. */
69 static char last_format
= 'x';
71 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
73 static char last_size
= 'w';
75 /* Default address to examine next. */
77 static CORE_ADDR next_address
;
79 /* Number of delay instructions following current disassembled insn. */
81 static int branch_delay_insns
;
83 /* Last address examined. */
85 static CORE_ADDR last_examine_address
;
87 /* Contents of last address examined.
88 This is not valid past the end of the `x' command! */
90 static struct value
*last_examine_value
;
92 /* Largest offset between a symbolic value and an address, that will be
93 printed as `0x1234 <symbol+offset>'. */
95 static unsigned int max_symbolic_offset
= UINT_MAX
;
97 show_max_symbolic_offset (struct ui_file
*file
, int from_tty
,
98 struct cmd_list_element
*c
, const char *value
)
100 fprintf_filtered (file
, _("\
101 The largest offset that will be printed in <symbol+1234> form is %s.\n"),
105 /* Append the source filename and linenumber of the symbol when
106 printing a symbolic value as `<symbol at filename:linenum>' if set. */
107 static int print_symbol_filename
= 0;
109 show_print_symbol_filename (struct ui_file
*file
, int from_tty
,
110 struct cmd_list_element
*c
, const char *value
)
112 fprintf_filtered (file
, _("\
113 Printing of source filename and line number with <symbol> is %s.\n"),
117 /* Number of auto-display expression currently being displayed.
118 So that we can disable it if we get an error or a signal within it.
119 -1 when not doing one. */
121 int current_display_number
;
125 /* Chain link to next auto-display item. */
126 struct display
*next
;
127 /* Expression to be evaluated and displayed. */
128 struct expression
*exp
;
129 /* Item number of this auto-display item. */
131 /* Display format specified. */
132 struct format_data format
;
133 /* Innermost block required by this expression when evaluated */
135 /* Status of this display (enabled or disabled) */
139 /* Chain of expressions whose values should be displayed
140 automatically each time the program stops. */
142 static struct display
*display_chain
;
144 static int display_number
;
146 /* Prototypes for exported functions. */
148 void output_command (char *, int);
150 void _initialize_printcmd (void);
152 /* Prototypes for local functions. */
154 static void do_one_display (struct display
*);
157 /* Decode a format specification. *STRING_PTR should point to it.
158 OFORMAT and OSIZE are used as defaults for the format and size
159 if none are given in the format specification.
160 If OSIZE is zero, then the size field of the returned value
161 should be set only if a size is explicitly specified by the
163 The structure returned describes all the data
164 found in the specification. In addition, *STRING_PTR is advanced
165 past the specification and past all whitespace following it. */
167 static struct format_data
168 decode_format (char **string_ptr
, int oformat
, int osize
)
170 struct format_data val
;
171 char *p
= *string_ptr
;
177 if (*p
>= '0' && *p
<= '9')
178 val
.count
= atoi (p
);
179 while (*p
>= '0' && *p
<= '9')
182 /* Now process size or format letters that follow. */
186 if (*p
== 'b' || *p
== 'h' || *p
== 'w' || *p
== 'g')
188 else if (*p
>= 'a' && *p
<= 'z')
194 while (*p
== ' ' || *p
== '\t')
198 /* Set defaults for format and size if not specified. */
199 if (val
.format
== '?')
203 /* Neither has been specified. */
204 val
.format
= oformat
;
208 /* If a size is specified, any format makes a reasonable
209 default except 'i'. */
210 val
.format
= oformat
== 'i' ? 'x' : oformat
;
212 else if (val
.size
== '?')
217 /* Pick the appropriate size for an address. */
218 if (gdbarch_ptr_bit (current_gdbarch
) == 64)
219 val
.size
= osize
? 'g' : osize
;
220 else if (gdbarch_ptr_bit (current_gdbarch
) == 32)
221 val
.size
= osize
? 'w' : osize
;
222 else if (gdbarch_ptr_bit (current_gdbarch
) == 16)
223 val
.size
= osize
? 'h' : osize
;
225 /* Bad value for gdbarch_ptr_bit. */
226 internal_error (__FILE__
, __LINE__
,
227 _("failed internal consistency check"));
230 /* Floating point has to be word or giantword. */
231 if (osize
== 'w' || osize
== 'g')
234 /* Default it to giantword if the last used size is not
236 val
.size
= osize
? 'g' : osize
;
239 /* Characters default to one byte. */
240 val
.size
= osize
? 'b' : osize
;
243 /* The default is the size most recently specified. */
250 /* Print value VAL on stream according to OPTIONS.
251 Do not end with a newline.
252 SIZE is the letter for the size of datum being printed.
253 This is used to pad hex numbers so they line up. SIZE is 0
254 for print / output and set for examine. */
257 print_formatted (struct value
*val
, int size
,
258 const struct value_print_options
*options
,
259 struct ui_file
*stream
)
261 struct type
*type
= check_typedef (value_type (val
));
262 int len
= TYPE_LENGTH (type
);
264 if (VALUE_LVAL (val
) == lval_memory
)
265 next_address
= VALUE_ADDRESS (val
) + len
;
269 switch (options
->format
)
272 /* FIXME: Need to handle wchar_t's here... */
273 next_address
= VALUE_ADDRESS (val
)
274 + val_print_string (VALUE_ADDRESS (val
), -1, 1, stream
,
279 /* We often wrap here if there are long symbolic names. */
281 next_address
= (VALUE_ADDRESS (val
)
282 + gdb_print_insn (VALUE_ADDRESS (val
), stream
,
283 &branch_delay_insns
));
288 if (options
->format
== 0 || options
->format
== 's'
289 || TYPE_CODE (type
) == TYPE_CODE_REF
290 || TYPE_CODE (type
) == TYPE_CODE_ARRAY
291 || TYPE_CODE (type
) == TYPE_CODE_STRING
292 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
293 || TYPE_CODE (type
) == TYPE_CODE_UNION
294 || TYPE_CODE (type
) == TYPE_CODE_NAMESPACE
)
295 value_print (val
, stream
, options
);
297 /* User specified format, so don't look to the the type to
298 tell us what to do. */
299 print_scalar_formatted (value_contents (val
), type
,
300 options
, size
, stream
);
303 /* Return builtin floating point type of same length as TYPE.
304 If no such type is found, return TYPE itself. */
306 float_type_from_length (struct gdbarch
*gdbarch
, struct type
*type
)
308 const struct builtin_type
*builtin
= builtin_type (gdbarch
);
309 unsigned int len
= TYPE_LENGTH (type
);
311 if (len
== TYPE_LENGTH (builtin
->builtin_float
))
312 type
= builtin
->builtin_float
;
313 else if (len
== TYPE_LENGTH (builtin
->builtin_double
))
314 type
= builtin
->builtin_double
;
315 else if (len
== TYPE_LENGTH (builtin
->builtin_long_double
))
316 type
= builtin
->builtin_long_double
;
321 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
322 according to OPTIONS and SIZE on STREAM.
323 Formats s and i are not supported at this level.
325 This is how the elements of an array or structure are printed
329 print_scalar_formatted (const void *valaddr
, struct type
*type
,
330 const struct value_print_options
*options
,
331 int size
, struct ui_file
*stream
)
333 LONGEST val_long
= 0;
334 unsigned int len
= TYPE_LENGTH (type
);
335 enum bfd_endian byte_order
= gdbarch_byte_order (current_gdbarch
);
337 /* If we get here with a string format, try again without it. Go
338 all the way back to the language printers, which may call us
340 if (options
->format
== 's')
342 struct value_print_options opts
= *options
;
345 val_print (type
, valaddr
, 0, 0, stream
, 0, &opts
,
350 if (len
> sizeof(LONGEST
) &&
351 (TYPE_CODE (type
) == TYPE_CODE_INT
352 || TYPE_CODE (type
) == TYPE_CODE_ENUM
))
354 switch (options
->format
)
357 print_octal_chars (stream
, valaddr
, len
, byte_order
);
361 print_decimal_chars (stream
, valaddr
, len
, byte_order
);
364 print_binary_chars (stream
, valaddr
, len
, byte_order
);
367 print_hex_chars (stream
, valaddr
, len
, byte_order
);
370 print_char_chars (stream
, valaddr
, len
, byte_order
);
377 if (options
->format
!= 'f')
378 val_long
= unpack_long (type
, valaddr
);
380 /* If the value is a pointer, and pointers and addresses are not the
381 same, then at this point, the value's length (in target bytes) is
382 gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
383 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
384 len
= gdbarch_addr_bit (current_gdbarch
) / TARGET_CHAR_BIT
;
386 /* If we are printing it as unsigned, truncate it in case it is actually
387 a negative signed value (e.g. "print/u (short)-1" should print 65535
388 (if shorts are 16 bits) instead of 4294967295). */
389 if (options
->format
!= 'd')
391 if (len
< sizeof (LONGEST
))
392 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
395 switch (options
->format
)
400 /* No size specified, like in print. Print varying # of digits. */
401 print_longest (stream
, 'x', 1, val_long
);
410 print_longest (stream
, size
, 1, val_long
);
413 error (_("Undefined output size \"%c\"."), size
);
418 print_longest (stream
, 'd', 1, val_long
);
422 print_longest (stream
, 'u', 0, val_long
);
427 print_longest (stream
, 'o', 1, val_long
);
429 fprintf_filtered (stream
, "0");
434 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
435 print_address (addr
, stream
);
441 struct value_print_options opts
= *options
;
443 if (TYPE_UNSIGNED (type
))
444 value_print (value_from_longest (builtin_type_true_unsigned_char
,
448 value_print (value_from_longest (builtin_type_true_char
, val_long
),
454 type
= float_type_from_length (current_gdbarch
, type
);
455 print_floating (valaddr
, type
, stream
);
459 internal_error (__FILE__
, __LINE__
,
460 _("failed internal consistency check"));
463 /* Binary; 't' stands for "two". */
465 char bits
[8 * (sizeof val_long
) + 1];
466 char buf
[8 * (sizeof val_long
) + 32];
471 width
= 8 * (sizeof val_long
);
488 error (_("Undefined output size \"%c\"."), size
);
494 bits
[width
] = (val_long
& 1) ? '1' : '0';
499 while (*cp
&& *cp
== '0')
505 fputs_filtered (buf
, stream
);
510 error (_("Undefined output format \"%c\"."), options
->format
);
514 /* Specify default address for `x' command.
515 The `info lines' command uses this. */
518 set_next_address (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
520 struct type
*ptr_type
= builtin_type (gdbarch
)->builtin_data_ptr
;
524 /* Make address available to the user as $_. */
525 set_internalvar (lookup_internalvar ("_"),
526 value_from_pointer (ptr_type
, addr
));
529 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
530 after LEADIN. Print nothing if no symbolic name is found nearby.
531 Optionally also print source file and line number, if available.
532 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
533 or to interpret it as a possible C++ name and convert it back to source
534 form. However note that DO_DEMANGLE can be overridden by the specific
535 settings of the demangle and asm_demangle variables. */
538 print_address_symbolic (CORE_ADDR addr
, struct ui_file
*stream
,
539 int do_demangle
, char *leadin
)
542 char *filename
= NULL
;
547 /* Throw away both name and filename. */
548 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
549 make_cleanup (free_current_contents
, &filename
);
551 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
,
552 &filename
, &line
, &unmapped
))
554 do_cleanups (cleanup_chain
);
558 fputs_filtered (leadin
, stream
);
560 fputs_filtered ("<*", stream
);
562 fputs_filtered ("<", stream
);
563 fputs_filtered (name
, stream
);
565 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
567 /* Append source filename and line number if desired. Give specific
568 line # of this addr, if we have it; else line # of the nearest symbol. */
569 if (print_symbol_filename
&& filename
!= NULL
)
572 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
574 fprintf_filtered (stream
, " in %s", filename
);
577 fputs_filtered ("*>", stream
);
579 fputs_filtered (">", stream
);
581 do_cleanups (cleanup_chain
);
584 /* Given an address ADDR return all the elements needed to print the
585 address in a symbolic form. NAME can be mangled or not depending
586 on DO_DEMANGLE (and also on the asm_demangle global variable,
587 manipulated via ''set print asm-demangle''). Return 0 in case of
588 success, when all the info in the OUT paramters is valid. Return 1
591 build_address_symbolic (CORE_ADDR addr
, /* IN */
592 int do_demangle
, /* IN */
593 char **name
, /* OUT */
594 int *offset
, /* OUT */
595 char **filename
, /* OUT */
597 int *unmapped
) /* OUT */
599 struct minimal_symbol
*msymbol
;
600 struct symbol
*symbol
;
601 CORE_ADDR name_location
= 0;
602 struct obj_section
*section
= NULL
;
603 char *name_temp
= "";
605 /* Let's say it is unmapped. */
608 /* Determine if the address is in an overlay, and whether it is
610 if (overlay_debugging
)
612 section
= find_pc_overlay (addr
);
613 if (pc_in_unmapped_range (addr
, section
))
616 addr
= overlay_mapped_address (addr
, section
);
620 /* First try to find the address in the symbol table, then
621 in the minsyms. Take the closest one. */
623 /* This is defective in the sense that it only finds text symbols. So
624 really this is kind of pointless--we should make sure that the
625 minimal symbols have everything we need (by changing that we could
626 save some memory, but for many debug format--ELF/DWARF or
627 anything/stabs--it would be inconvenient to eliminate those minimal
629 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
630 symbol
= find_pc_sect_function (addr
, section
);
634 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
635 if (do_demangle
|| asm_demangle
)
636 name_temp
= SYMBOL_PRINT_NAME (symbol
);
638 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
643 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
645 /* The msymbol is closer to the address than the symbol;
646 use the msymbol instead. */
648 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
649 if (do_demangle
|| asm_demangle
)
650 name_temp
= SYMBOL_PRINT_NAME (msymbol
);
652 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
655 if (symbol
== NULL
&& msymbol
== NULL
)
658 /* If the nearest symbol is too far away, don't print anything symbolic. */
660 /* For when CORE_ADDR is larger than unsigned int, we do math in
661 CORE_ADDR. But when we detect unsigned wraparound in the
662 CORE_ADDR math, we ignore this test and print the offset,
663 because addr+max_symbolic_offset has wrapped through the end
664 of the address space back to the beginning, giving bogus comparison. */
665 if (addr
> name_location
+ max_symbolic_offset
666 && name_location
+ max_symbolic_offset
> name_location
)
669 *offset
= addr
- name_location
;
671 *name
= xstrdup (name_temp
);
673 if (print_symbol_filename
)
675 struct symtab_and_line sal
;
677 sal
= find_pc_sect_line (addr
, section
, 0);
681 *filename
= xstrdup (sal
.symtab
->filename
);
689 /* Print address ADDR symbolically on STREAM.
690 First print it as a number. Then perhaps print
691 <SYMBOL + OFFSET> after the number. */
694 print_address (CORE_ADDR addr
, struct ui_file
*stream
)
696 fputs_filtered (paddress (addr
), stream
);
697 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
700 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
701 controls whether to print the symbolic name "raw" or demangled.
702 Global setting "addressprint" controls whether to print hex address
706 print_address_demangle (CORE_ADDR addr
, struct ui_file
*stream
,
709 struct value_print_options opts
;
710 get_user_print_options (&opts
);
713 fprintf_filtered (stream
, "0");
715 else if (opts
.addressprint
)
717 fputs_filtered (paddress (addr
), stream
);
718 print_address_symbolic (addr
, stream
, do_demangle
, " ");
722 print_address_symbolic (addr
, stream
, do_demangle
, "");
727 /* These are the types that $__ will get after an examine command of one
730 static struct type
*examine_i_type
;
732 static struct type
*examine_b_type
;
733 static struct type
*examine_h_type
;
734 static struct type
*examine_w_type
;
735 static struct type
*examine_g_type
;
737 /* Examine data at address ADDR in format FMT.
738 Fetch it from memory and print on gdb_stdout. */
741 do_examine (struct format_data fmt
, CORE_ADDR addr
)
746 struct type
*val_type
= NULL
;
749 struct value_print_options opts
;
756 /* String or instruction format implies fetch single bytes
757 regardless of the specified size. */
758 if (format
== 's' || format
== 'i')
762 val_type
= examine_i_type
;
763 else if (size
== 'b')
764 val_type
= examine_b_type
;
765 else if (size
== 'h')
766 val_type
= examine_h_type
;
767 else if (size
== 'w')
768 val_type
= examine_w_type
;
769 else if (size
== 'g')
770 val_type
= examine_g_type
;
777 if (format
== 's' || format
== 'i')
780 get_formatted_print_options (&opts
, format
);
782 /* Print as many objects as specified in COUNT, at most maxelts per line,
783 with the address of the next one at the start of each line. */
788 print_address (next_address
, gdb_stdout
);
789 printf_filtered (":");
794 printf_filtered ("\t");
795 /* Note that print_formatted sets next_address for the next
797 last_examine_address
= next_address
;
799 if (last_examine_value
)
800 value_free (last_examine_value
);
802 /* The value to be displayed is not fetched greedily.
803 Instead, to avoid the possibility of a fetched value not
804 being used, its retrieval is delayed until the print code
805 uses it. When examining an instruction stream, the
806 disassembler will perform its own memory fetch using just
807 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
808 the disassembler be modified so that LAST_EXAMINE_VALUE
809 is left with the byte sequence from the last complete
810 instruction fetched from memory? */
811 last_examine_value
= value_at_lazy (val_type
, next_address
);
813 if (last_examine_value
)
814 release_value (last_examine_value
);
816 print_formatted (last_examine_value
, size
, &opts
, gdb_stdout
);
818 /* Display any branch delay slots following the final insn. */
819 if (format
== 'i' && count
== 1)
820 count
+= branch_delay_insns
;
822 printf_filtered ("\n");
823 gdb_flush (gdb_stdout
);
828 validate_format (struct format_data fmt
, char *cmdname
)
831 error (_("Size letters are meaningless in \"%s\" command."), cmdname
);
833 error (_("Item count other than 1 is meaningless in \"%s\" command."),
835 if (fmt
.format
== 'i')
836 error (_("Format letter \"%c\" is meaningless in \"%s\" command."),
837 fmt
.format
, cmdname
);
840 /* Evaluate string EXP as an expression in the current language and
841 print the resulting value. EXP may contain a format specifier as the
842 first argument ("/x myvar" for example, to print myvar in hex). */
845 print_command_1 (char *exp
, int inspect
, int voidprint
)
847 struct expression
*expr
;
848 struct cleanup
*old_chain
= 0;
851 struct format_data fmt
;
854 if (exp
&& *exp
== '/')
857 fmt
= decode_format (&exp
, last_format
, 0);
858 validate_format (fmt
, "print");
859 last_format
= format
= fmt
.format
;
871 expr
= parse_expression (exp
);
872 old_chain
= make_cleanup (free_current_contents
, &expr
);
874 val
= evaluate_expression (expr
);
877 val
= access_value_history (0);
879 if (voidprint
|| (val
&& value_type (val
) &&
880 TYPE_CODE (value_type (val
)) != TYPE_CODE_VOID
))
882 struct value_print_options opts
;
883 int histindex
= record_latest_value (val
);
886 annotate_value_history_begin (histindex
, value_type (val
));
888 annotate_value_begin (value_type (val
));
891 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"",
893 else if (histindex
>= 0)
894 printf_filtered ("$%d = ", histindex
);
897 annotate_value_history_value ();
899 get_formatted_print_options (&opts
, format
);
900 opts
.inspect_it
= inspect
;
902 print_formatted (val
, fmt
.size
, &opts
, gdb_stdout
);
903 printf_filtered ("\n");
906 annotate_value_history_end ();
908 annotate_value_end ();
911 printf_unfiltered ("\") )\030");
915 do_cleanups (old_chain
);
919 print_command (char *exp
, int from_tty
)
921 print_command_1 (exp
, 0, 1);
924 /* Same as print, except in epoch, it gets its own window. */
926 inspect_command (char *exp
, int from_tty
)
928 extern int epoch_interface
;
930 print_command_1 (exp
, epoch_interface
, 1);
933 /* Same as print, except it doesn't print void results. */
935 call_command (char *exp
, int from_tty
)
937 print_command_1 (exp
, 0, 0);
941 output_command (char *exp
, int from_tty
)
943 struct expression
*expr
;
944 struct cleanup
*old_chain
;
947 struct format_data fmt
;
948 struct value_print_options opts
;
952 if (exp
&& *exp
== '/')
955 fmt
= decode_format (&exp
, 0, 0);
956 validate_format (fmt
, "output");
960 expr
= parse_expression (exp
);
961 old_chain
= make_cleanup (free_current_contents
, &expr
);
963 val
= evaluate_expression (expr
);
965 annotate_value_begin (value_type (val
));
967 get_formatted_print_options (&opts
, format
);
968 print_formatted (val
, fmt
.size
, &opts
, gdb_stdout
);
970 annotate_value_end ();
973 gdb_flush (gdb_stdout
);
975 do_cleanups (old_chain
);
979 set_command (char *exp
, int from_tty
)
981 struct expression
*expr
= parse_expression (exp
);
982 struct cleanup
*old_chain
=
983 make_cleanup (free_current_contents
, &expr
);
984 evaluate_expression (expr
);
985 do_cleanups (old_chain
);
989 sym_info (char *arg
, int from_tty
)
991 struct minimal_symbol
*msymbol
;
992 struct objfile
*objfile
;
993 struct obj_section
*osect
;
994 CORE_ADDR addr
, sect_addr
;
999 error_no_arg (_("address"));
1001 addr
= parse_and_eval_address (arg
);
1002 ALL_OBJSECTIONS (objfile
, osect
)
1004 /* Only process each object file once, even if there's a separate
1006 if (objfile
->separate_debug_objfile_backlink
)
1009 sect_addr
= overlay_mapped_address (addr
, osect
);
1011 if (obj_section_addr (osect
) <= sect_addr
1012 && sect_addr
< obj_section_endaddr (osect
)
1013 && (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, osect
)))
1015 const char *obj_name
, *mapped
, *sec_name
, *msym_name
;
1017 struct cleanup
*old_chain
;
1020 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1021 mapped
= section_is_mapped (osect
) ? _("mapped") : _("unmapped");
1022 sec_name
= osect
->the_bfd_section
->name
;
1023 msym_name
= SYMBOL_PRINT_NAME (msymbol
);
1025 /* Don't print the offset if it is zero.
1026 We assume there's no need to handle i18n of "sym + offset". */
1028 xasprintf (&loc_string
, "%s + %u", msym_name
, offset
);
1030 xasprintf (&loc_string
, "%s", msym_name
);
1032 /* Use a cleanup to free loc_string in case the user quits
1033 a pagination request inside printf_filtered. */
1034 old_chain
= make_cleanup (xfree
, loc_string
);
1036 gdb_assert (osect
->objfile
&& osect
->objfile
->name
);
1037 obj_name
= osect
->objfile
->name
;
1039 if (MULTI_OBJFILE_P ())
1040 if (pc_in_unmapped_range (addr
, osect
))
1041 if (section_is_overlay (osect
))
1042 printf_filtered (_("%s in load address range of "
1043 "%s overlay section %s of %s\n"),
1044 loc_string
, mapped
, sec_name
, obj_name
);
1046 printf_filtered (_("%s in load address range of "
1047 "section %s of %s\n"),
1048 loc_string
, sec_name
, obj_name
);
1050 if (section_is_overlay (osect
))
1051 printf_filtered (_("%s in %s overlay section %s of %s\n"),
1052 loc_string
, mapped
, sec_name
, obj_name
);
1054 printf_filtered (_("%s in section %s of %s\n"),
1055 loc_string
, sec_name
, obj_name
);
1057 if (pc_in_unmapped_range (addr
, osect
))
1058 if (section_is_overlay (osect
))
1059 printf_filtered (_("%s in load address range of %s overlay "
1061 loc_string
, mapped
, sec_name
);
1063 printf_filtered (_("%s in load address range of section %s\n"),
1064 loc_string
, sec_name
);
1066 if (section_is_overlay (osect
))
1067 printf_filtered (_("%s in %s overlay section %s\n"),
1068 loc_string
, mapped
, sec_name
);
1070 printf_filtered (_("%s in section %s\n"),
1071 loc_string
, sec_name
);
1073 do_cleanups (old_chain
);
1077 printf_filtered (_("No symbol matches %s.\n"), arg
);
1081 address_info (char *exp
, int from_tty
)
1084 struct minimal_symbol
*msymbol
;
1086 struct obj_section
*section
;
1087 CORE_ADDR load_addr
;
1088 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1089 if exp is a field of `this'. */
1092 error (_("Argument required."));
1094 sym
= lookup_symbol (exp
, get_selected_block (0), VAR_DOMAIN
,
1095 &is_a_field_of_this
);
1098 if (is_a_field_of_this
)
1100 printf_filtered ("Symbol \"");
1101 fprintf_symbol_filtered (gdb_stdout
, exp
,
1102 current_language
->la_language
, DMGL_ANSI
);
1103 printf_filtered ("\" is a field of the local class variable ");
1104 if (current_language
->la_language
== language_objc
)
1105 printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
1107 printf_filtered ("`this'\n");
1111 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1113 if (msymbol
!= NULL
)
1115 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1117 printf_filtered ("Symbol \"");
1118 fprintf_symbol_filtered (gdb_stdout
, exp
,
1119 current_language
->la_language
, DMGL_ANSI
);
1120 printf_filtered ("\" is at ");
1121 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1122 printf_filtered (" in a file compiled without debugging");
1123 section
= SYMBOL_OBJ_SECTION (msymbol
);
1124 if (section_is_overlay (section
))
1126 load_addr
= overlay_unmapped_address (load_addr
, section
);
1127 printf_filtered (",\n -- loaded at ");
1128 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1129 printf_filtered (" in overlay section %s",
1130 section
->the_bfd_section
->name
);
1132 printf_filtered (".\n");
1135 error (_("No symbol \"%s\" in current context."), exp
);
1139 printf_filtered ("Symbol \"");
1140 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_PRINT_NAME (sym
),
1141 current_language
->la_language
, DMGL_ANSI
);
1142 printf_filtered ("\" is ");
1143 val
= SYMBOL_VALUE (sym
);
1144 section
= SYMBOL_OBJ_SECTION (sym
);
1146 switch (SYMBOL_CLASS (sym
))
1149 case LOC_CONST_BYTES
:
1150 printf_filtered ("constant");
1154 printf_filtered ("a label at address ");
1155 fputs_filtered (paddress (load_addr
= SYMBOL_VALUE_ADDRESS (sym
)),
1157 if (section_is_overlay (section
))
1159 load_addr
= overlay_unmapped_address (load_addr
, section
);
1160 printf_filtered (",\n -- loaded at ");
1161 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1162 printf_filtered (" in overlay section %s",
1163 section
->the_bfd_section
->name
);
1168 /* FIXME: cagney/2004-01-26: It should be possible to
1169 unconditionally call the SYMBOL_OPS method when available.
1170 Unfortunately DWARF 2 stores the frame-base (instead of the
1171 function) location in a function's symbol. Oops! For the
1172 moment enable this when/where applicable. */
1173 SYMBOL_OPS (sym
)->describe_location (sym
, gdb_stdout
);
1177 if (SYMBOL_IS_ARGUMENT (sym
))
1178 printf_filtered (_("an argument in register %s"),
1179 gdbarch_register_name (current_gdbarch
, val
));
1181 printf_filtered (_("a variable in register %s"),
1182 gdbarch_register_name (current_gdbarch
, val
));
1186 printf_filtered (_("static storage at address "));
1187 fputs_filtered (paddress (load_addr
= SYMBOL_VALUE_ADDRESS (sym
)),
1189 if (section_is_overlay (section
))
1191 load_addr
= overlay_unmapped_address (load_addr
, section
);
1192 printf_filtered (_(",\n -- loaded at "));
1193 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1194 printf_filtered (_(" in overlay section %s"),
1195 section
->the_bfd_section
->name
);
1199 case LOC_REGPARM_ADDR
:
1200 printf_filtered (_("address of an argument in register %s"),
1201 gdbarch_register_name (current_gdbarch
, val
));
1205 printf_filtered (_("an argument at offset %ld"), val
);
1209 printf_filtered (_("a local variable at frame offset %ld"), val
);
1213 printf_filtered (_("a reference argument at offset %ld"), val
);
1217 printf_filtered (_("a typedef"));
1221 printf_filtered (_("a function at address "));
1222 load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1223 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1224 if (section_is_overlay (section
))
1226 load_addr
= overlay_unmapped_address (load_addr
, section
);
1227 printf_filtered (_(",\n -- loaded at "));
1228 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1229 printf_filtered (_(" in overlay section %s"),
1230 section
->the_bfd_section
->name
);
1234 case LOC_UNRESOLVED
:
1236 struct minimal_symbol
*msym
;
1238 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
), NULL
, NULL
);
1240 printf_filtered ("unresolved");
1243 section
= SYMBOL_OBJ_SECTION (msym
);
1244 printf_filtered (_("static storage at address "));
1245 load_addr
= SYMBOL_VALUE_ADDRESS (msym
);
1246 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1247 if (section_is_overlay (section
))
1249 load_addr
= overlay_unmapped_address (load_addr
, section
);
1250 printf_filtered (_(",\n -- loaded at "));
1251 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1252 printf_filtered (_(" in overlay section %s"),
1253 section
->the_bfd_section
->name
);
1259 case LOC_OPTIMIZED_OUT
:
1260 printf_filtered (_("optimized out"));
1264 printf_filtered (_("of unknown (botched) type"));
1267 printf_filtered (".\n");
1272 x_command (char *exp
, int from_tty
)
1274 struct expression
*expr
;
1275 struct format_data fmt
;
1276 struct cleanup
*old_chain
;
1279 fmt
.format
= last_format
;
1280 fmt
.size
= last_size
;
1283 if (exp
&& *exp
== '/')
1286 fmt
= decode_format (&exp
, last_format
, last_size
);
1289 /* If we have an expression, evaluate it and use it as the address. */
1291 if (exp
!= 0 && *exp
!= 0)
1293 expr
= parse_expression (exp
);
1294 /* Cause expression not to be there any more if this command is
1295 repeated with Newline. But don't clobber a user-defined
1296 command's definition. */
1299 old_chain
= make_cleanup (free_current_contents
, &expr
);
1300 val
= evaluate_expression (expr
);
1301 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_REF
)
1302 val
= value_ind (val
);
1303 /* In rvalue contexts, such as this, functions are coerced into
1304 pointers to functions. This makes "x/i main" work. */
1305 if (/* last_format == 'i' && */
1306 TYPE_CODE (value_type (val
)) == TYPE_CODE_FUNC
1307 && VALUE_LVAL (val
) == lval_memory
)
1308 next_address
= VALUE_ADDRESS (val
);
1310 next_address
= value_as_address (val
);
1311 do_cleanups (old_chain
);
1314 do_examine (fmt
, next_address
);
1316 /* If the examine succeeds, we remember its size and format for next
1318 last_size
= fmt
.size
;
1319 last_format
= fmt
.format
;
1321 /* Set a couple of internal variables if appropriate. */
1322 if (last_examine_value
)
1324 /* Make last address examined available to the user as $_. Use
1325 the correct pointer type. */
1326 struct type
*pointer_type
1327 = lookup_pointer_type (value_type (last_examine_value
));
1328 set_internalvar (lookup_internalvar ("_"),
1329 value_from_pointer (pointer_type
,
1330 last_examine_address
));
1332 /* Make contents of last address examined available to the user
1333 as $__. If the last value has not been fetched from memory
1334 then don't fetch it now; instead mark it by voiding the $__
1336 if (value_lazy (last_examine_value
))
1337 set_internalvar (lookup_internalvar ("__"),
1338 allocate_value (builtin_type_void
));
1340 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1345 /* Add an expression to the auto-display chain.
1346 Specify the expression. */
1349 display_command (char *exp
, int from_tty
)
1351 struct format_data fmt
;
1352 struct expression
*expr
;
1353 struct display
*new;
1357 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1359 if (tui_active
&& exp
!= NULL
&& *exp
== '$')
1360 display_it
= (tui_set_layout_for_display_command (exp
) == TUI_FAILURE
);
1374 fmt
= decode_format (&exp
, 0, 0);
1375 if (fmt
.size
&& fmt
.format
== 0)
1377 if (fmt
.format
== 'i' || fmt
.format
== 's')
1387 innermost_block
= 0;
1388 expr
= parse_expression (exp
);
1390 new = (struct display
*) xmalloc (sizeof (struct display
));
1393 new->block
= innermost_block
;
1394 new->next
= display_chain
;
1395 new->number
= ++display_number
;
1398 display_chain
= new;
1400 if (from_tty
&& target_has_execution
)
1401 do_one_display (new);
1408 free_display (struct display
*d
)
1414 /* Clear out the display_chain. Done when new symtabs are loaded,
1415 since this invalidates the types stored in many expressions. */
1418 clear_displays (void)
1422 while ((d
= display_chain
) != NULL
)
1425 display_chain
= d
->next
;
1430 /* Delete the auto-display number NUM. */
1433 delete_display (int num
)
1435 struct display
*d1
, *d
;
1438 error (_("No display number %d."), num
);
1440 if (display_chain
->number
== num
)
1443 display_chain
= d1
->next
;
1447 for (d
= display_chain
;; d
= d
->next
)
1450 error (_("No display number %d."), num
);
1451 if (d
->next
->number
== num
)
1461 /* Delete some values from the auto-display chain.
1462 Specify the element numbers. */
1465 undisplay_command (char *args
, int from_tty
)
1473 if (query ("Delete all auto-display expressions? "))
1482 while (*p1
>= '0' && *p1
<= '9')
1484 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1485 error (_("Arguments must be display numbers."));
1489 delete_display (num
);
1492 while (*p
== ' ' || *p
== '\t')
1498 /* Display a single auto-display.
1499 Do nothing if the display cannot be printed in the current context,
1500 or if the display is disabled. */
1503 do_one_display (struct display
*d
)
1505 int within_current_scope
;
1507 if (d
->enabled_p
== 0)
1511 within_current_scope
= contained_in (get_selected_block (0), d
->block
);
1513 within_current_scope
= 1;
1514 if (!within_current_scope
)
1517 current_display_number
= d
->number
;
1519 annotate_display_begin ();
1520 printf_filtered ("%d", d
->number
);
1521 annotate_display_number_end ();
1522 printf_filtered (": ");
1528 annotate_display_format ();
1530 printf_filtered ("x/");
1531 if (d
->format
.count
!= 1)
1532 printf_filtered ("%d", d
->format
.count
);
1533 printf_filtered ("%c", d
->format
.format
);
1534 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1535 printf_filtered ("%c", d
->format
.size
);
1536 printf_filtered (" ");
1538 annotate_display_expression ();
1540 print_expression (d
->exp
, gdb_stdout
);
1541 annotate_display_expression_end ();
1543 if (d
->format
.count
!= 1 || d
->format
.format
== 'i')
1544 printf_filtered ("\n");
1546 printf_filtered (" ");
1548 val
= evaluate_expression (d
->exp
);
1549 addr
= value_as_address (val
);
1550 if (d
->format
.format
== 'i')
1551 addr
= gdbarch_addr_bits_remove (current_gdbarch
, addr
);
1553 annotate_display_value ();
1555 do_examine (d
->format
, addr
);
1559 struct value_print_options opts
;
1561 annotate_display_format ();
1563 if (d
->format
.format
)
1564 printf_filtered ("/%c ", d
->format
.format
);
1566 annotate_display_expression ();
1568 print_expression (d
->exp
, gdb_stdout
);
1569 annotate_display_expression_end ();
1571 printf_filtered (" = ");
1573 annotate_display_expression ();
1575 get_formatted_print_options (&opts
, d
->format
.format
);
1576 print_formatted (evaluate_expression (d
->exp
),
1577 d
->format
.size
, &opts
, gdb_stdout
);
1578 printf_filtered ("\n");
1581 annotate_display_end ();
1583 gdb_flush (gdb_stdout
);
1584 current_display_number
= -1;
1587 /* Display all of the values on the auto-display chain which can be
1588 evaluated in the current scope. */
1595 for (d
= display_chain
; d
; d
= d
->next
)
1599 /* Delete the auto-display which we were in the process of displaying.
1600 This is done when there is an error or a signal. */
1603 disable_display (int num
)
1607 for (d
= display_chain
; d
; d
= d
->next
)
1608 if (d
->number
== num
)
1613 printf_unfiltered (_("No display number %d.\n"), num
);
1617 disable_current_display (void)
1619 if (current_display_number
>= 0)
1621 disable_display (current_display_number
);
1622 fprintf_unfiltered (gdb_stderr
, _("\
1623 Disabling display %d to avoid infinite recursion.\n"),
1624 current_display_number
);
1626 current_display_number
= -1;
1630 display_info (char *ignore
, int from_tty
)
1635 printf_unfiltered (_("There are no auto-display expressions now.\n"));
1637 printf_filtered (_("Auto-display expressions now in effect:\n\
1638 Num Enb Expression\n"));
1640 for (d
= display_chain
; d
; d
= d
->next
)
1642 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->enabled_p
]);
1644 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1646 else if (d
->format
.format
)
1647 printf_filtered ("/%c ", d
->format
.format
);
1648 print_expression (d
->exp
, gdb_stdout
);
1649 if (d
->block
&& !contained_in (get_selected_block (0), d
->block
))
1650 printf_filtered (_(" (cannot be evaluated in the current context)"));
1651 printf_filtered ("\n");
1652 gdb_flush (gdb_stdout
);
1657 enable_display (char *args
, int from_tty
)
1666 for (d
= display_chain
; d
; d
= d
->next
)
1673 while (*p1
>= '0' && *p1
<= '9')
1675 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1676 error (_("Arguments must be display numbers."));
1680 for (d
= display_chain
; d
; d
= d
->next
)
1681 if (d
->number
== num
)
1686 printf_unfiltered (_("No display number %d.\n"), num
);
1689 while (*p
== ' ' || *p
== '\t')
1695 disable_display_command (char *args
, int from_tty
)
1703 for (d
= display_chain
; d
; d
= d
->next
)
1710 while (*p1
>= '0' && *p1
<= '9')
1712 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1713 error (_("Arguments must be display numbers."));
1715 disable_display (atoi (p
));
1718 while (*p
== ' ' || *p
== '\t')
1724 /* Print the value in stack frame FRAME of a variable specified by a
1728 print_variable_value (struct symbol
*var
, struct frame_info
*frame
,
1729 struct ui_file
*stream
)
1731 struct value
*val
= read_var_value (var
, frame
);
1732 struct value_print_options opts
;
1734 get_user_print_options (&opts
);
1735 value_print (val
, stream
, &opts
);
1739 printf_command (char *arg
, int from_tty
)
1743 char *string
= NULL
;
1744 struct value
**val_args
;
1746 char *current_substring
;
1748 int allocated_args
= 20;
1749 struct cleanup
*old_cleanups
;
1751 val_args
= xmalloc (allocated_args
* sizeof (struct value
*));
1752 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
1755 error_no_arg (_("format-control string and values to print"));
1757 /* Skip white space before format string */
1758 while (*s
== ' ' || *s
== '\t')
1761 /* A format string should follow, enveloped in double quotes. */
1763 error (_("Bad format string, missing '\"'."));
1765 /* Parse the format-control string and copy it into the string STRING,
1766 processing some kinds of escape sequence. */
1768 f
= string
= (char *) alloca (strlen (s
) + 1);
1776 error (_("Bad format string, non-terminated '\"'."));
1809 /* ??? TODO: handle other escape sequences */
1810 error (_("Unrecognized escape character \\%c in format string."),
1820 /* Skip over " and following space and comma. */
1823 while (*s
== ' ' || *s
== '\t')
1826 if (*s
!= ',' && *s
!= 0)
1827 error (_("Invalid argument syntax"));
1831 while (*s
== ' ' || *s
== '\t')
1834 /* Need extra space for the '\0's. Doubling the size is sufficient. */
1835 substrings
= alloca (strlen (string
) * 2);
1836 current_substring
= substrings
;
1839 /* Now scan the string for %-specs and see what kinds of args they want.
1840 argclass[I] classifies the %-specs so we can give printf_filtered
1841 something of the right size. */
1845 int_arg
, long_arg
, long_long_arg
, ptr_arg
, string_arg
,
1846 double_arg
, long_double_arg
, decfloat_arg
1848 enum argclass
*argclass
;
1849 enum argclass this_argclass
;
1854 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
1861 int seen_hash
= 0, seen_zero
= 0, lcount
= 0, seen_prec
= 0;
1862 int seen_space
= 0, seen_plus
= 0;
1863 int seen_big_l
= 0, seen_h
= 0, seen_big_h
= 0;
1864 int seen_big_d
= 0, seen_double_big_d
= 0;
1867 /* Check the validity of the format specifier, and work
1868 out what argument it expects. We only accept C89
1869 format strings, with the exception of long long (which
1870 we autoconf for). */
1872 /* Skip over "%%". */
1879 /* The first part of a format specifier is a set of flag
1881 while (strchr ("0-+ #", *f
))
1894 /* The next part of a format specifier is a width. */
1895 while (strchr ("0123456789", *f
))
1898 /* The next part of a format specifier is a precision. */
1903 while (strchr ("0123456789", *f
))
1907 /* The next part of a format specifier is a length modifier. */
1928 /* Decimal32 modifier. */
1934 /* Decimal64 and Decimal128 modifiers. */
1939 /* Check for a Decimal128. */
1943 seen_double_big_d
= 1;
1959 if (seen_space
|| seen_plus
)
1966 this_argclass
= int_arg
;
1967 else if (lcount
== 1)
1968 this_argclass
= long_arg
;
1970 this_argclass
= long_long_arg
;
1977 this_argclass
= int_arg
;
1978 if (lcount
|| seen_h
|| seen_big_l
)
1980 if (seen_prec
|| seen_zero
|| seen_space
|| seen_plus
)
1985 this_argclass
= ptr_arg
;
1986 if (lcount
|| seen_h
|| seen_big_l
)
1988 if (seen_prec
|| seen_zero
|| seen_space
|| seen_plus
)
1993 this_argclass
= string_arg
;
1994 if (lcount
|| seen_h
|| seen_big_l
)
1996 if (seen_zero
|| seen_space
|| seen_plus
)
2005 if (seen_big_h
|| seen_big_d
|| seen_double_big_d
)
2006 this_argclass
= decfloat_arg
;
2007 else if (seen_big_l
)
2008 this_argclass
= long_double_arg
;
2010 this_argclass
= double_arg
;
2012 if (lcount
|| seen_h
)
2017 error (_("`*' not supported for precision or width in printf"));
2020 error (_("Format specifier `n' not supported in printf"));
2023 error (_("Incomplete format specifier at end of format string"));
2026 error (_("Unrecognized format specifier '%c' in printf"), *f
);
2030 error (_("Inappropriate modifiers to format specifier '%c' in printf"),
2035 if (lcount
> 1 && USE_PRINTF_I64
)
2037 /* Windows' printf does support long long, but not the usual way.
2038 Convert %lld to %I64d. */
2039 int length_before_ll
= f
- last_arg
- 1 - lcount
;
2040 strncpy (current_substring
, last_arg
, length_before_ll
);
2041 strcpy (current_substring
+ length_before_ll
, "I64");
2042 current_substring
[length_before_ll
+ 3] =
2043 last_arg
[length_before_ll
+ lcount
];
2044 current_substring
+= length_before_ll
+ 4;
2048 strncpy (current_substring
, last_arg
, f
- last_arg
);
2049 current_substring
+= f
- last_arg
;
2051 *current_substring
++ = '\0';
2053 argclass
[nargs_wanted
++] = this_argclass
;
2056 /* Now, parse all arguments and evaluate them.
2057 Store the VALUEs in VAL_ARGS. */
2062 if (nargs
== allocated_args
)
2063 val_args
= (struct value
**) xrealloc ((char *) val_args
,
2064 (allocated_args
*= 2)
2065 * sizeof (struct value
*));
2067 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2075 if (nargs
!= nargs_wanted
)
2076 error (_("Wrong number of arguments for specified format-string"));
2078 /* Now actually print them. */
2079 current_substring
= substrings
;
2080 for (i
= 0; i
< nargs
; i
++)
2082 switch (argclass
[i
])
2089 tem
= value_as_address (val_args
[i
]);
2091 /* This is a %s argument. Find the length of the string. */
2096 read_memory (tem
+ j
, &c
, 1);
2101 /* Copy the string contents into a string inside GDB. */
2102 str
= (gdb_byte
*) alloca (j
+ 1);
2104 read_memory (tem
, str
, j
);
2107 printf_filtered (current_substring
, (char *) str
);
2112 struct type
*type
= value_type (val_args
[i
]);
2116 /* If format string wants a float, unchecked-convert the value
2117 to floating point of the same size. */
2118 type
= float_type_from_length (current_gdbarch
, type
);
2119 val
= unpack_double (type
, value_contents (val_args
[i
]), &inv
);
2121 error (_("Invalid floating value found in program."));
2123 printf_filtered (current_substring
, (double) val
);
2126 case long_double_arg
:
2127 #ifdef HAVE_LONG_DOUBLE
2129 struct type
*type
= value_type (val_args
[i
]);
2133 /* If format string wants a float, unchecked-convert the value
2134 to floating point of the same size. */
2135 type
= float_type_from_length (current_gdbarch
, type
);
2136 val
= unpack_double (type
, value_contents (val_args
[i
]), &inv
);
2138 error (_("Invalid floating value found in program."));
2140 printf_filtered (current_substring
, (long double) val
);
2144 error (_("long double not supported in printf"));
2147 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2149 long long val
= value_as_long (val_args
[i
]);
2150 printf_filtered (current_substring
, val
);
2154 error (_("long long not supported in printf"));
2158 int val
= value_as_long (val_args
[i
]);
2159 printf_filtered (current_substring
, val
);
2164 long val
= value_as_long (val_args
[i
]);
2165 printf_filtered (current_substring
, val
);
2169 /* Handles decimal floating values. */
2172 const gdb_byte
*param_ptr
= value_contents (val_args
[i
]);
2173 #if defined (PRINTF_HAS_DECFLOAT)
2174 /* If we have native support for Decimal floating
2175 printing, handle it here. */
2176 printf_filtered (current_substring
, param_ptr
);
2179 /* As a workaround until vasprintf has native support for DFP
2180 we convert the DFP values to string and print them using
2181 the %s format specifier. */
2184 int nnull_chars
= 0;
2186 /* Parameter data. */
2187 struct type
*param_type
= value_type (val_args
[i
]);
2188 unsigned int param_len
= TYPE_LENGTH (param_type
);
2190 /* DFP output data. */
2191 struct value
*dfp_value
= NULL
;
2195 struct type
*dfp_type
= NULL
;
2196 char decstr
[MAX_DECIMAL_STRING
];
2198 /* Points to the end of the string so that we can go back
2199 and check for DFP length modifiers. */
2200 eos
= current_substring
+ strlen (current_substring
);
2202 /* Look for the float/double format specifier. */
2203 while (*eos
!= 'f' && *eos
!= 'e' && *eos
!= 'E'
2204 && *eos
!= 'g' && *eos
!= 'G')
2209 /* Search for the '%' char and extract the size and type of
2210 the output decimal value based on its modifiers
2211 (%Hf, %Df, %DDf). */
2212 while (*--sos
!= '%')
2217 dfp_type
= builtin_type (current_gdbarch
)->builtin_decfloat
;
2219 else if (*sos
== 'D' && *(sos
- 1) == 'D')
2222 dfp_type
= builtin_type (current_gdbarch
)->builtin_declong
;
2228 dfp_type
= builtin_type (current_gdbarch
)->builtin_decdouble
;
2232 /* Replace %Hf, %Df and %DDf with %s's. */
2235 /* Go through the whole format string and pull the correct
2236 number of chars back to compensate for the change in the
2237 format specifier. */
2238 while (nnull_chars
< nargs
- i
)
2246 /* Conversion between different DFP types. */
2247 if (TYPE_CODE (param_type
) == TYPE_CODE_DECFLOAT
)
2248 decimal_convert (param_ptr
, param_len
, dec
, dfp_len
);
2250 /* If this is a non-trivial conversion, just output 0.
2251 A correct converted value can be displayed by explicitly
2252 casting to a DFP type. */
2253 decimal_from_string (dec
, dfp_len
, "0");
2255 dfp_value
= value_from_decfloat (dfp_type
, dec
);
2257 dfp_ptr
= (gdb_byte
*) value_contents (dfp_value
);
2259 decimal_to_string (dfp_ptr
, dfp_len
, decstr
);
2261 /* Print the DFP value. */
2262 printf_filtered (current_substring
, decstr
);
2270 /* We avoid the host's %p because pointers are too
2271 likely to be the wrong size. The only interesting
2272 modifier for %p is a width; extract that, and then
2273 handle %p as glibc would: %#x or a literal "(nil)". */
2275 char *p
, *fmt
, *fmt_p
;
2276 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2277 long long val
= value_as_long (val_args
[i
]);
2279 long val
= value_as_long (val_args
[i
]);
2282 fmt
= alloca (strlen (current_substring
) + 5);
2284 /* Copy up to the leading %. */
2285 p
= current_substring
;
2289 int is_percent
= (*p
== '%');
2303 /* Copy any width. */
2304 while (*p
>= '0' && *p
< '9')
2307 gdb_assert (*p
== 'p' && *(p
+ 1) == '\0');
2310 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2316 printf_filtered (fmt
, val
);
2322 printf_filtered (fmt
, "(nil)");
2328 internal_error (__FILE__
, __LINE__
,
2329 _("failed internal consistency check"));
2331 /* Skip to the next substring. */
2332 current_substring
+= strlen (current_substring
) + 1;
2334 /* Print the portion of the format string after the last argument. */
2335 puts_filtered (last_arg
);
2337 do_cleanups (old_cleanups
);
2341 _initialize_printcmd (void)
2343 struct cmd_list_element
*c
;
2345 current_display_number
= -1;
2347 add_info ("address", address_info
,
2348 _("Describe where symbol SYM is stored."));
2350 add_info ("symbol", sym_info
, _("\
2351 Describe what symbol is at location ADDR.\n\
2352 Only for symbols with fixed locations (global or static scope)."));
2354 add_com ("x", class_vars
, x_command
, _("\
2355 Examine memory: x/FMT ADDRESS.\n\
2356 ADDRESS is an expression for the memory address to examine.\n\
2357 FMT is a repeat count followed by a format letter and a size letter.\n\
2358 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2359 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\
2360 Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2361 The specified number of objects of the specified size are printed\n\
2362 according to the format.\n\n\
2363 Defaults for format and size letters are those previously used.\n\
2364 Default count is 1. Default address is following last thing printed\n\
2365 with this command or \"print\"."));
2368 add_com ("whereis", class_vars
, whereis_command
,
2369 _("Print line number and file of definition of variable."));
2372 add_info ("display", display_info
, _("\
2373 Expressions to display when program stops, with code numbers."));
2375 add_cmd ("undisplay", class_vars
, undisplay_command
, _("\
2376 Cancel some expressions to be displayed when program stops.\n\
2377 Arguments are the code numbers of the expressions to stop displaying.\n\
2378 No argument means cancel all automatic-display expressions.\n\
2379 \"delete display\" has the same effect as this command.\n\
2380 Do \"info display\" to see current list of code numbers."),
2383 add_com ("display", class_vars
, display_command
, _("\
2384 Print value of expression EXP each time the program stops.\n\
2385 /FMT may be used before EXP as in the \"print\" command.\n\
2386 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2387 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2388 and examining is done as in the \"x\" command.\n\n\
2389 With no argument, display all currently requested auto-display expressions.\n\
2390 Use \"undisplay\" to cancel display requests previously made."));
2392 add_cmd ("display", class_vars
, enable_display
, _("\
2393 Enable some expressions to be displayed when program stops.\n\
2394 Arguments are the code numbers of the expressions to resume displaying.\n\
2395 No argument means enable all automatic-display expressions.\n\
2396 Do \"info display\" to see current list of code numbers."), &enablelist
);
2398 add_cmd ("display", class_vars
, disable_display_command
, _("\
2399 Disable some expressions to be displayed when program stops.\n\
2400 Arguments are the code numbers of the expressions to stop displaying.\n\
2401 No argument means disable all automatic-display expressions.\n\
2402 Do \"info display\" to see current list of code numbers."), &disablelist
);
2404 add_cmd ("display", class_vars
, undisplay_command
, _("\
2405 Cancel some expressions to be displayed when program stops.\n\
2406 Arguments are the code numbers of the expressions to stop displaying.\n\
2407 No argument means cancel all automatic-display expressions.\n\
2408 Do \"info display\" to see current list of code numbers."), &deletelist
);
2410 add_com ("printf", class_vars
, printf_command
, _("\
2411 printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2412 This is useful for formatted output in user-defined commands."));
2414 add_com ("output", class_vars
, output_command
, _("\
2415 Like \"print\" but don't put in value history and don't print newline.\n\
2416 This is useful in user-defined commands."));
2418 add_prefix_cmd ("set", class_vars
, set_command
, _("\
2419 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2420 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2421 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2422 with $), a register (a few standard names starting with $), or an actual\n\
2423 variable in the program being debugged. EXP is any valid expression.\n\
2424 Use \"set variable\" for variables with names identical to set subcommands.\n\
2426 With a subcommand, this command modifies parts of the gdb environment.\n\
2427 You can see these environment settings with the \"show\" command."),
2428 &setlist
, "set ", 1, &cmdlist
);
2430 add_com ("assign", class_vars
, set_command
, _("\
2431 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2432 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2433 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2434 with $), a register (a few standard names starting with $), or an actual\n\
2435 variable in the program being debugged. EXP is any valid expression.\n\
2436 Use \"set variable\" for variables with names identical to set subcommands.\n\
2437 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2438 You can see these environment settings with the \"show\" command."));
2440 /* "call" is the same as "set", but handy for dbx users to call fns. */
2441 c
= add_com ("call", class_vars
, call_command
, _("\
2442 Call a function in the program.\n\
2443 The argument is the function name and arguments, in the notation of the\n\
2444 current working language. The result is printed and saved in the value\n\
2445 history, if it is not void."));
2446 set_cmd_completer (c
, expression_completer
);
2448 add_cmd ("variable", class_vars
, set_command
, _("\
2449 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2450 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2451 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2452 with $), a register (a few standard names starting with $), or an actual\n\
2453 variable in the program being debugged. EXP is any valid expression.\n\
2454 This may usually be abbreviated to simply \"set\"."),
2457 c
= add_com ("print", class_vars
, print_command
, _("\
2458 Print value of expression EXP.\n\
2459 Variables accessible are those of the lexical environment of the selected\n\
2460 stack frame, plus all those whose scope is global or an entire file.\n\
2462 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2463 $$NUM refers to NUM'th value back from the last one.\n\
2464 Names starting with $ refer to registers (with the values they would have\n\
2465 if the program were to return to the stack frame now selected, restoring\n\
2466 all registers saved by frames farther in) or else to debugger\n\
2467 \"convenience\" variables (any such name not a known register).\n\
2468 Use assignment expressions to give values to convenience variables.\n\
2470 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2471 @ is a binary operator for treating consecutive data objects\n\
2472 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2473 element is FOO, whose second element is stored in the space following\n\
2474 where FOO is stored, etc. FOO must be an expression whose value\n\
2475 resides in memory.\n\
2477 EXP may be preceded with /FMT, where FMT is a format letter\n\
2478 but no count or size letter (see \"x\" command)."));
2479 set_cmd_completer (c
, expression_completer
);
2480 add_com_alias ("p", "print", class_vars
, 1);
2482 c
= add_com ("inspect", class_vars
, inspect_command
, _("\
2483 Same as \"print\" command, except that if you are running in the epoch\n\
2484 environment, the value is printed in its own window."));
2485 set_cmd_completer (c
, expression_completer
);
2487 add_setshow_uinteger_cmd ("max-symbolic-offset", no_class
,
2488 &max_symbolic_offset
, _("\
2489 Set the largest offset that will be printed in <symbol+1234> form."), _("\
2490 Show the largest offset that will be printed in <symbol+1234> form."), NULL
,
2492 show_max_symbolic_offset
,
2493 &setprintlist
, &showprintlist
);
2494 add_setshow_boolean_cmd ("symbol-filename", no_class
,
2495 &print_symbol_filename
, _("\
2496 Set printing of source filename and line number with <symbol>."), _("\
2497 Show printing of source filename and line number with <symbol>."), NULL
,
2499 show_print_symbol_filename
,
2500 &setprintlist
, &showprintlist
);
2502 /* For examine/instruction a single byte quantity is specified as
2503 the data. This avoids problems with value_at_lazy() requiring a
2504 valid data type (and rejecting VOID). */
2505 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2507 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2508 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2509 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2510 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);