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"
47 #include "tui/tui.h" /* For tui_active et.al. */
50 #if defined(__MINGW32__)
51 # define USE_PRINTF_I64 1
52 # define PRINTF_HAS_LONG_LONG
54 # define USE_PRINTF_I64 0
57 extern int asm_demangle
; /* Whether to demangle syms in asm printouts */
58 extern int addressprint
; /* Whether to print hex addresses in HLL " */
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
;
123 /* Flag to low-level print routines that this value is being printed
124 in an epoch window. We'd like to pass this as a parameter, but
125 every routine would need to take it. Perhaps we can encapsulate
126 this in the I/O stream once we have GNU stdio. */
132 /* Chain link to next auto-display item. */
133 struct display
*next
;
134 /* Expression to be evaluated and displayed. */
135 struct expression
*exp
;
136 /* Item number of this auto-display item. */
138 /* Display format specified. */
139 struct format_data format
;
140 /* Innermost block required by this expression when evaluated */
142 /* Status of this display (enabled or disabled) */
146 /* Chain of expressions whose values should be displayed
147 automatically each time the program stops. */
149 static struct display
*display_chain
;
151 static int display_number
;
153 /* Prototypes for exported functions. */
155 void output_command (char *, int);
157 void _initialize_printcmd (void);
159 /* Prototypes for local functions. */
161 static void do_one_display (struct display
*);
164 /* Decode a format specification. *STRING_PTR should point to it.
165 OFORMAT and OSIZE are used as defaults for the format and size
166 if none are given in the format specification.
167 If OSIZE is zero, then the size field of the returned value
168 should be set only if a size is explicitly specified by the
170 The structure returned describes all the data
171 found in the specification. In addition, *STRING_PTR is advanced
172 past the specification and past all whitespace following it. */
174 static struct format_data
175 decode_format (char **string_ptr
, int oformat
, int osize
)
177 struct format_data val
;
178 char *p
= *string_ptr
;
184 if (*p
>= '0' && *p
<= '9')
185 val
.count
= atoi (p
);
186 while (*p
>= '0' && *p
<= '9')
189 /* Now process size or format letters that follow. */
193 if (*p
== 'b' || *p
== 'h' || *p
== 'w' || *p
== 'g')
195 else if (*p
>= 'a' && *p
<= 'z')
201 while (*p
== ' ' || *p
== '\t')
205 /* Set defaults for format and size if not specified. */
206 if (val
.format
== '?')
210 /* Neither has been specified. */
211 val
.format
= oformat
;
215 /* If a size is specified, any format makes a reasonable
216 default except 'i'. */
217 val
.format
= oformat
== 'i' ? 'x' : oformat
;
219 else if (val
.size
== '?')
224 /* Pick the appropriate size for an address. */
225 if (gdbarch_ptr_bit (current_gdbarch
) == 64)
226 val
.size
= osize
? 'g' : osize
;
227 else if (gdbarch_ptr_bit (current_gdbarch
) == 32)
228 val
.size
= osize
? 'w' : osize
;
229 else if (gdbarch_ptr_bit (current_gdbarch
) == 16)
230 val
.size
= osize
? 'h' : osize
;
232 /* Bad value for gdbarch_ptr_bit. */
233 internal_error (__FILE__
, __LINE__
,
234 _("failed internal consistency check"));
237 /* Floating point has to be word or giantword. */
238 if (osize
== 'w' || osize
== 'g')
241 /* Default it to giantword if the last used size is not
243 val
.size
= osize
? 'g' : osize
;
246 /* Characters default to one byte. */
247 val
.size
= osize
? 'b' : osize
;
250 /* The default is the size most recently specified. */
257 /* Print value VAL on stream according to FORMAT, a letter or 0.
258 Do not end with a newline.
259 0 means print VAL according to its own type.
260 SIZE is the letter for the size of datum being printed.
261 This is used to pad hex numbers so they line up. SIZE is 0
262 for print / output and set for examine. */
265 print_formatted (struct value
*val
, int format
, int size
,
266 struct ui_file
*stream
)
268 struct type
*type
= check_typedef (value_type (val
));
269 int len
= TYPE_LENGTH (type
);
271 if (VALUE_LVAL (val
) == lval_memory
)
272 next_address
= VALUE_ADDRESS (val
) + len
;
279 /* FIXME: Need to handle wchar_t's here... */
280 next_address
= VALUE_ADDRESS (val
)
281 + val_print_string (VALUE_ADDRESS (val
), -1, 1, stream
);
285 /* We often wrap here if there are long symbolic names. */
287 next_address
= (VALUE_ADDRESS (val
)
288 + gdb_print_insn (VALUE_ADDRESS (val
), stream
,
289 &branch_delay_insns
));
294 if (format
== 0 || format
== 's'
295 || TYPE_CODE (type
) == TYPE_CODE_REF
296 || TYPE_CODE (type
) == TYPE_CODE_ARRAY
297 || TYPE_CODE (type
) == TYPE_CODE_STRING
298 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
299 || TYPE_CODE (type
) == TYPE_CODE_UNION
300 || TYPE_CODE (type
) == TYPE_CODE_NAMESPACE
)
301 /* If format is 0, use the 'natural' format for that type of
302 value. If the type is non-scalar, we have to use language
303 rules to print it as a series of scalars. */
304 value_print (val
, stream
, format
, Val_pretty_default
);
306 /* User specified format, so don't look to the the type to
307 tell us what to do. */
308 print_scalar_formatted (value_contents (val
), type
,
309 format
, size
, stream
);
312 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
313 according to letters FORMAT and SIZE on STREAM.
314 FORMAT may not be zero. Formats s and i are not supported at this level.
316 This is how the elements of an array or structure are printed
320 print_scalar_formatted (const void *valaddr
, struct type
*type
,
321 int format
, int size
, struct ui_file
*stream
)
323 LONGEST val_long
= 0;
324 unsigned int len
= TYPE_LENGTH (type
);
326 /* If we get here with a string format, try again without it. Go
327 all the way back to the language printers, which may call us
331 val_print (type
, valaddr
, 0, 0, stream
, 0, 0, 0, Val_pretty_default
,
336 if (len
> sizeof(LONGEST
) &&
337 (TYPE_CODE (type
) == TYPE_CODE_INT
338 || TYPE_CODE (type
) == TYPE_CODE_ENUM
))
343 print_octal_chars (stream
, valaddr
, len
);
347 print_decimal_chars (stream
, valaddr
, len
);
350 print_binary_chars (stream
, valaddr
, len
);
353 print_hex_chars (stream
, valaddr
, len
);
356 print_char_chars (stream
, valaddr
, len
);
364 val_long
= unpack_long (type
, valaddr
);
366 /* If the value is a pointer, and pointers and addresses are not the
367 same, then at this point, the value's length (in target bytes) is
368 gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
369 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
370 len
= gdbarch_addr_bit (current_gdbarch
) / TARGET_CHAR_BIT
;
372 /* If we are printing it as unsigned, truncate it in case it is actually
373 a negative signed value (e.g. "print/u (short)-1" should print 65535
374 (if shorts are 16 bits) instead of 4294967295). */
377 if (len
< sizeof (LONGEST
))
378 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
386 /* No size specified, like in print. Print varying # of digits. */
387 print_longest (stream
, 'x', 1, val_long
);
396 print_longest (stream
, size
, 1, val_long
);
399 error (_("Undefined output size \"%c\"."), size
);
404 print_longest (stream
, 'd', 1, val_long
);
408 print_longest (stream
, 'u', 0, val_long
);
413 print_longest (stream
, 'o', 1, val_long
);
415 fprintf_filtered (stream
, "0");
420 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
421 print_address (addr
, stream
);
426 if (TYPE_UNSIGNED (type
))
430 utype
= builtin_type (current_gdbarch
)->builtin_true_unsigned_char
;
431 value_print (value_from_longest (utype
, val_long
),
432 stream
, 0, Val_pretty_default
);
435 value_print (value_from_longest (builtin_type_true_char
, val_long
),
436 stream
, 0, Val_pretty_default
);
440 if (len
== TYPE_LENGTH (builtin_type_float
))
441 type
= builtin_type_float
;
442 else if (len
== TYPE_LENGTH (builtin_type_double
))
443 type
= builtin_type_double
;
444 else if (len
== TYPE_LENGTH (builtin_type_long_double
))
445 type
= builtin_type_long_double
;
446 print_floating (valaddr
, type
, stream
);
450 internal_error (__FILE__
, __LINE__
,
451 _("failed internal consistency check"));
454 /* Binary; 't' stands for "two". */
456 char bits
[8 * (sizeof val_long
) + 1];
457 char buf
[8 * (sizeof val_long
) + 32];
462 width
= 8 * (sizeof val_long
);
479 error (_("Undefined output size \"%c\"."), size
);
485 bits
[width
] = (val_long
& 1) ? '1' : '0';
490 while (*cp
&& *cp
== '0')
496 fputs_filtered (buf
, stream
);
501 error (_("Undefined output format \"%c\"."), format
);
505 /* Specify default address for `x' command.
506 The `info lines' command uses this. */
509 set_next_address (CORE_ADDR addr
)
513 /* Make address available to the user as $_. */
514 set_internalvar (lookup_internalvar ("_"),
515 value_from_pointer (lookup_pointer_type (builtin_type_void
),
519 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
520 after LEADIN. Print nothing if no symbolic name is found nearby.
521 Optionally also print source file and line number, if available.
522 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
523 or to interpret it as a possible C++ name and convert it back to source
524 form. However note that DO_DEMANGLE can be overridden by the specific
525 settings of the demangle and asm_demangle variables. */
528 print_address_symbolic (CORE_ADDR addr
, struct ui_file
*stream
,
529 int do_demangle
, char *leadin
)
532 char *filename
= NULL
;
537 /* Throw away both name and filename. */
538 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
539 make_cleanup (free_current_contents
, &filename
);
541 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
,
542 &filename
, &line
, &unmapped
))
544 do_cleanups (cleanup_chain
);
548 fputs_filtered (leadin
, stream
);
550 fputs_filtered ("<*", stream
);
552 fputs_filtered ("<", stream
);
553 fputs_filtered (name
, stream
);
555 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
557 /* Append source filename and line number if desired. Give specific
558 line # of this addr, if we have it; else line # of the nearest symbol. */
559 if (print_symbol_filename
&& filename
!= NULL
)
562 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
564 fprintf_filtered (stream
, " in %s", filename
);
567 fputs_filtered ("*>", stream
);
569 fputs_filtered (">", stream
);
571 do_cleanups (cleanup_chain
);
574 /* Given an address ADDR return all the elements needed to print the
575 address in a symbolic form. NAME can be mangled or not depending
576 on DO_DEMANGLE (and also on the asm_demangle global variable,
577 manipulated via ''set print asm-demangle''). Return 0 in case of
578 success, when all the info in the OUT paramters is valid. Return 1
581 build_address_symbolic (CORE_ADDR addr
, /* IN */
582 int do_demangle
, /* IN */
583 char **name
, /* OUT */
584 int *offset
, /* OUT */
585 char **filename
, /* OUT */
587 int *unmapped
) /* OUT */
589 struct minimal_symbol
*msymbol
;
590 struct symbol
*symbol
;
591 CORE_ADDR name_location
= 0;
592 asection
*section
= 0;
593 char *name_temp
= "";
595 /* Let's say it is unmapped. */
598 /* Determine if the address is in an overlay, and whether it is
600 if (overlay_debugging
)
602 section
= find_pc_overlay (addr
);
603 if (pc_in_unmapped_range (addr
, section
))
606 addr
= overlay_mapped_address (addr
, section
);
610 /* First try to find the address in the symbol table, then
611 in the minsyms. Take the closest one. */
613 /* This is defective in the sense that it only finds text symbols. So
614 really this is kind of pointless--we should make sure that the
615 minimal symbols have everything we need (by changing that we could
616 save some memory, but for many debug format--ELF/DWARF or
617 anything/stabs--it would be inconvenient to eliminate those minimal
619 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
620 symbol
= find_pc_sect_function (addr
, section
);
624 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
625 if (do_demangle
|| asm_demangle
)
626 name_temp
= SYMBOL_PRINT_NAME (symbol
);
628 name_temp
= DEPRECATED_SYMBOL_NAME (symbol
);
633 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
635 /* The msymbol is closer to the address than the symbol;
636 use the msymbol instead. */
638 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
639 if (do_demangle
|| asm_demangle
)
640 name_temp
= SYMBOL_PRINT_NAME (msymbol
);
642 name_temp
= DEPRECATED_SYMBOL_NAME (msymbol
);
645 if (symbol
== NULL
&& msymbol
== NULL
)
648 /* If the nearest symbol is too far away, don't print anything symbolic. */
650 /* For when CORE_ADDR is larger than unsigned int, we do math in
651 CORE_ADDR. But when we detect unsigned wraparound in the
652 CORE_ADDR math, we ignore this test and print the offset,
653 because addr+max_symbolic_offset has wrapped through the end
654 of the address space back to the beginning, giving bogus comparison. */
655 if (addr
> name_location
+ max_symbolic_offset
656 && name_location
+ max_symbolic_offset
> name_location
)
659 *offset
= addr
- name_location
;
661 *name
= xstrdup (name_temp
);
663 if (print_symbol_filename
)
665 struct symtab_and_line sal
;
667 sal
= find_pc_sect_line (addr
, section
, 0);
671 *filename
= xstrdup (sal
.symtab
->filename
);
678 /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
681 deprecated_print_address_numeric (CORE_ADDR addr
, int use_local
,
682 struct ui_file
*stream
)
685 fputs_filtered (paddress (addr
), stream
);
688 int addr_bit
= gdbarch_addr_bit (current_gdbarch
);
690 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
691 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
692 print_longest (stream
, 'x', 0, (ULONGEST
) addr
);
696 /* Print address ADDR symbolically on STREAM.
697 First print it as a number. Then perhaps print
698 <SYMBOL + OFFSET> after the number. */
701 print_address (CORE_ADDR addr
, struct ui_file
*stream
)
703 fputs_filtered (paddress (addr
), stream
);
704 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
707 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
708 controls whether to print the symbolic name "raw" or demangled.
709 Global setting "addressprint" controls whether to print hex address
713 print_address_demangle (CORE_ADDR addr
, struct ui_file
*stream
,
718 fprintf_filtered (stream
, "0");
720 else if (addressprint
)
722 fputs_filtered (paddress (addr
), stream
);
723 print_address_symbolic (addr
, stream
, do_demangle
, " ");
727 print_address_symbolic (addr
, stream
, do_demangle
, "");
732 /* These are the types that $__ will get after an examine command of one
735 static struct type
*examine_i_type
;
737 static struct type
*examine_b_type
;
738 static struct type
*examine_h_type
;
739 static struct type
*examine_w_type
;
740 static struct type
*examine_g_type
;
742 /* Examine data at address ADDR in format FMT.
743 Fetch it from memory and print on gdb_stdout. */
746 do_examine (struct format_data fmt
, CORE_ADDR addr
)
751 struct type
*val_type
= NULL
;
760 /* String or instruction format implies fetch single bytes
761 regardless of the specified size. */
762 if (format
== 's' || format
== 'i')
766 val_type
= examine_i_type
;
767 else if (size
== 'b')
768 val_type
= examine_b_type
;
769 else if (size
== 'h')
770 val_type
= examine_h_type
;
771 else if (size
== 'w')
772 val_type
= examine_w_type
;
773 else if (size
== 'g')
774 val_type
= examine_g_type
;
781 if (format
== 's' || format
== 'i')
784 /* Print as many objects as specified in COUNT, at most maxelts per line,
785 with the address of the next one at the start of each line. */
790 print_address (next_address
, gdb_stdout
);
791 printf_filtered (":");
796 printf_filtered ("\t");
797 /* Note that print_formatted sets next_address for the next
799 last_examine_address
= next_address
;
801 if (last_examine_value
)
802 value_free (last_examine_value
);
804 /* The value to be displayed is not fetched greedily.
805 Instead, to avoid the possibility of a fetched value not
806 being used, its retrieval is delayed until the print code
807 uses it. When examining an instruction stream, the
808 disassembler will perform its own memory fetch using just
809 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
810 the disassembler be modified so that LAST_EXAMINE_VALUE
811 is left with the byte sequence from the last complete
812 instruction fetched from memory? */
813 last_examine_value
= value_at_lazy (val_type
, next_address
);
815 if (last_examine_value
)
816 release_value (last_examine_value
);
818 print_formatted (last_examine_value
, format
, size
, gdb_stdout
);
820 /* Display any branch delay slots following the final insn. */
821 if (format
== 'i' && count
== 1)
822 count
+= branch_delay_insns
;
824 printf_filtered ("\n");
825 gdb_flush (gdb_stdout
);
830 validate_format (struct format_data fmt
, char *cmdname
)
833 error (_("Size letters are meaningless in \"%s\" command."), cmdname
);
835 error (_("Item count other than 1 is meaningless in \"%s\" command."),
837 if (fmt
.format
== 'i')
838 error (_("Format letter \"%c\" is meaningless in \"%s\" command."),
839 fmt
.format
, cmdname
);
842 /* Evaluate string EXP as an expression in the current language and
843 print the resulting value. EXP may contain a format specifier as the
844 first argument ("/x myvar" for example, to print myvar in hex). */
847 print_command_1 (char *exp
, int inspect
, int voidprint
)
849 struct expression
*expr
;
850 struct cleanup
*old_chain
= 0;
853 struct format_data fmt
;
856 /* Pass inspect flag to the rest of the print routines in a global
858 inspect_it
= inspect
;
860 if (exp
&& *exp
== '/')
863 fmt
= decode_format (&exp
, last_format
, 0);
864 validate_format (fmt
, "print");
865 last_format
= format
= fmt
.format
;
877 expr
= parse_expression (exp
);
878 old_chain
= make_cleanup (free_current_contents
, &expr
);
880 val
= evaluate_expression (expr
);
883 val
= access_value_history (0);
885 if (voidprint
|| (val
&& value_type (val
) &&
886 TYPE_CODE (value_type (val
)) != TYPE_CODE_VOID
))
888 int histindex
= record_latest_value (val
);
891 annotate_value_history_begin (histindex
, value_type (val
));
893 annotate_value_begin (value_type (val
));
896 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"",
898 else if (histindex
>= 0)
899 printf_filtered ("$%d = ", histindex
);
902 annotate_value_history_value ();
904 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
905 printf_filtered ("\n");
908 annotate_value_history_end ();
910 annotate_value_end ();
913 printf_unfiltered ("\") )\030");
917 do_cleanups (old_chain
);
918 inspect_it
= 0; /* Reset print routines to normal. */
922 print_command (char *exp
, int from_tty
)
924 print_command_1 (exp
, 0, 1);
927 /* Same as print, except in epoch, it gets its own window. */
929 inspect_command (char *exp
, int from_tty
)
931 extern int epoch_interface
;
933 print_command_1 (exp
, epoch_interface
, 1);
936 /* Same as print, except it doesn't print void results. */
938 call_command (char *exp
, int from_tty
)
940 print_command_1 (exp
, 0, 0);
944 output_command (char *exp
, int from_tty
)
946 struct expression
*expr
;
947 struct cleanup
*old_chain
;
950 struct format_data fmt
;
954 if (exp
&& *exp
== '/')
957 fmt
= decode_format (&exp
, 0, 0);
958 validate_format (fmt
, "output");
962 expr
= parse_expression (exp
);
963 old_chain
= make_cleanup (free_current_contents
, &expr
);
965 val
= evaluate_expression (expr
);
967 annotate_value_begin (value_type (val
));
969 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
971 annotate_value_end ();
974 gdb_flush (gdb_stdout
);
976 do_cleanups (old_chain
);
980 set_command (char *exp
, int from_tty
)
982 struct expression
*expr
= parse_expression (exp
);
983 struct cleanup
*old_chain
=
984 make_cleanup (free_current_contents
, &expr
);
985 evaluate_expression (expr
);
986 do_cleanups (old_chain
);
990 sym_info (char *arg
, int from_tty
)
992 struct minimal_symbol
*msymbol
;
993 struct objfile
*objfile
;
994 struct obj_section
*osect
;
996 CORE_ADDR addr
, sect_addr
;
1001 error_no_arg (_("address"));
1003 addr
= parse_and_eval_address (arg
);
1004 ALL_OBJSECTIONS (objfile
, osect
)
1006 /* Only process each object file once, even if there's a separate
1008 if (objfile
->separate_debug_objfile_backlink
)
1011 sect
= osect
->the_bfd_section
;
1012 sect_addr
= overlay_mapped_address (addr
, sect
);
1014 if (osect
->addr
<= sect_addr
&& sect_addr
< osect
->endaddr
&&
1015 (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, sect
)))
1018 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1020 printf_filtered ("%s + %u in ",
1021 SYMBOL_PRINT_NAME (msymbol
), offset
);
1023 printf_filtered ("%s in ",
1024 SYMBOL_PRINT_NAME (msymbol
));
1025 if (pc_in_unmapped_range (addr
, sect
))
1026 printf_filtered (_("load address range of "));
1027 if (section_is_overlay (sect
))
1028 printf_filtered (_("%s overlay "),
1029 section_is_mapped (sect
) ? "mapped" : "unmapped");
1030 printf_filtered (_("section %s"), sect
->name
);
1031 printf_filtered ("\n");
1035 printf_filtered (_("No symbol matches %s.\n"), arg
);
1039 address_info (char *exp
, int from_tty
)
1042 struct minimal_symbol
*msymbol
;
1045 CORE_ADDR load_addr
;
1046 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1047 if exp is a field of `this'. */
1050 error (_("Argument required."));
1052 sym
= lookup_symbol (exp
, get_selected_block (0), VAR_DOMAIN
,
1053 &is_a_field_of_this
);
1056 if (is_a_field_of_this
)
1058 printf_filtered ("Symbol \"");
1059 fprintf_symbol_filtered (gdb_stdout
, exp
,
1060 current_language
->la_language
, DMGL_ANSI
);
1061 printf_filtered ("\" is a field of the local class variable ");
1062 if (current_language
->la_language
== language_objc
)
1063 printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
1065 printf_filtered ("`this'\n");
1069 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1071 if (msymbol
!= NULL
)
1073 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1075 printf_filtered ("Symbol \"");
1076 fprintf_symbol_filtered (gdb_stdout
, exp
,
1077 current_language
->la_language
, DMGL_ANSI
);
1078 printf_filtered ("\" is at ");
1079 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1080 printf_filtered (" in a file compiled without debugging");
1081 section
= SYMBOL_BFD_SECTION (msymbol
);
1082 if (section_is_overlay (section
))
1084 load_addr
= overlay_unmapped_address (load_addr
, section
);
1085 printf_filtered (",\n -- loaded at ");
1086 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1087 printf_filtered (" in overlay section %s", section
->name
);
1089 printf_filtered (".\n");
1092 error (_("No symbol \"%s\" in current context."), exp
);
1096 printf_filtered ("Symbol \"");
1097 fprintf_symbol_filtered (gdb_stdout
, DEPRECATED_SYMBOL_NAME (sym
),
1098 current_language
->la_language
, DMGL_ANSI
);
1099 printf_filtered ("\" is ");
1100 val
= SYMBOL_VALUE (sym
);
1101 section
= SYMBOL_BFD_SECTION (sym
);
1103 switch (SYMBOL_CLASS (sym
))
1106 case LOC_CONST_BYTES
:
1107 printf_filtered ("constant");
1111 printf_filtered ("a label at address ");
1112 fputs_filtered (paddress (load_addr
= SYMBOL_VALUE_ADDRESS (sym
)),
1114 if (section_is_overlay (section
))
1116 load_addr
= overlay_unmapped_address (load_addr
, section
);
1117 printf_filtered (",\n -- loaded at ");
1118 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1119 printf_filtered (" in overlay section %s", section
->name
);
1124 case LOC_COMPUTED_ARG
:
1125 /* FIXME: cagney/2004-01-26: It should be possible to
1126 unconditionally call the SYMBOL_OPS method when available.
1127 Unfortunately DWARF 2 stores the frame-base (instead of the
1128 function) location in a function's symbol. Oops! For the
1129 moment enable this when/where applicable. */
1130 SYMBOL_OPS (sym
)->describe_location (sym
, gdb_stdout
);
1134 printf_filtered (_("a variable in register %s"),
1135 gdbarch_register_name (current_gdbarch
, val
));
1139 printf_filtered (_("static storage at address "));
1140 fputs_filtered (paddress (load_addr
= SYMBOL_VALUE_ADDRESS (sym
)),
1142 if (section_is_overlay (section
))
1144 load_addr
= overlay_unmapped_address (load_addr
, section
);
1145 printf_filtered (_(",\n -- loaded at "));
1146 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1147 printf_filtered (_(" in overlay section %s"), section
->name
);
1152 printf_filtered (_("an argument in register %s"),
1153 gdbarch_register_name (current_gdbarch
, val
));
1156 case LOC_REGPARM_ADDR
:
1157 printf_filtered (_("address of an argument in register %s"),
1158 gdbarch_register_name (current_gdbarch
, val
));
1162 printf_filtered (_("an argument at offset %ld"), val
);
1166 printf_filtered (_("a local variable at frame offset %ld"), val
);
1170 printf_filtered (_("a reference argument at offset %ld"), val
);
1174 printf_filtered (_("a typedef"));
1178 printf_filtered (_("a function at address "));
1179 load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1180 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1181 if (section_is_overlay (section
))
1183 load_addr
= overlay_unmapped_address (load_addr
, section
);
1184 printf_filtered (_(",\n -- loaded at "));
1185 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1186 printf_filtered (_(" in overlay section %s"), section
->name
);
1190 case LOC_UNRESOLVED
:
1192 struct minimal_symbol
*msym
;
1194 msym
= lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym
), NULL
, NULL
);
1196 printf_filtered ("unresolved");
1199 section
= SYMBOL_BFD_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"), section
->name
);
1214 case LOC_OPTIMIZED_OUT
:
1215 printf_filtered (_("optimized out"));
1219 printf_filtered (_("of unknown (botched) type"));
1222 printf_filtered (".\n");
1227 x_command (char *exp
, int from_tty
)
1229 struct expression
*expr
;
1230 struct format_data fmt
;
1231 struct cleanup
*old_chain
;
1234 fmt
.format
= last_format
;
1235 fmt
.size
= last_size
;
1238 if (exp
&& *exp
== '/')
1241 fmt
= decode_format (&exp
, last_format
, last_size
);
1244 /* If we have an expression, evaluate it and use it as the address. */
1246 if (exp
!= 0 && *exp
!= 0)
1248 expr
= parse_expression (exp
);
1249 /* Cause expression not to be there any more if this command is
1250 repeated with Newline. But don't clobber a user-defined
1251 command's definition. */
1254 old_chain
= make_cleanup (free_current_contents
, &expr
);
1255 val
= evaluate_expression (expr
);
1256 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_REF
)
1257 val
= value_ind (val
);
1258 /* In rvalue contexts, such as this, functions are coerced into
1259 pointers to functions. This makes "x/i main" work. */
1260 if (/* last_format == 'i' && */
1261 TYPE_CODE (value_type (val
)) == TYPE_CODE_FUNC
1262 && VALUE_LVAL (val
) == lval_memory
)
1263 next_address
= VALUE_ADDRESS (val
);
1265 next_address
= value_as_address (val
);
1266 do_cleanups (old_chain
);
1269 do_examine (fmt
, next_address
);
1271 /* If the examine succeeds, we remember its size and format for next
1273 last_size
= fmt
.size
;
1274 last_format
= fmt
.format
;
1276 /* Set a couple of internal variables if appropriate. */
1277 if (last_examine_value
)
1279 /* Make last address examined available to the user as $_. Use
1280 the correct pointer type. */
1281 struct type
*pointer_type
1282 = lookup_pointer_type (value_type (last_examine_value
));
1283 set_internalvar (lookup_internalvar ("_"),
1284 value_from_pointer (pointer_type
,
1285 last_examine_address
));
1287 /* Make contents of last address examined available to the user
1288 as $__. If the last value has not been fetched from memory
1289 then don't fetch it now; instead mark it by voiding the $__
1291 if (value_lazy (last_examine_value
))
1292 set_internalvar (lookup_internalvar ("__"),
1293 allocate_value (builtin_type_void
));
1295 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1300 /* Add an expression to the auto-display chain.
1301 Specify the expression. */
1304 display_command (char *exp
, int from_tty
)
1306 struct format_data fmt
;
1307 struct expression
*expr
;
1308 struct display
*new;
1312 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1314 if (tui_active
&& exp
!= NULL
&& *exp
== '$')
1315 display_it
= (tui_set_layout_for_display_command (exp
) == TUI_FAILURE
);
1329 fmt
= decode_format (&exp
, 0, 0);
1330 if (fmt
.size
&& fmt
.format
== 0)
1332 if (fmt
.format
== 'i' || fmt
.format
== 's')
1342 innermost_block
= 0;
1343 expr
= parse_expression (exp
);
1345 new = (struct display
*) xmalloc (sizeof (struct display
));
1348 new->block
= innermost_block
;
1349 new->next
= display_chain
;
1350 new->number
= ++display_number
;
1353 display_chain
= new;
1355 if (from_tty
&& target_has_execution
)
1356 do_one_display (new);
1363 free_display (struct display
*d
)
1369 /* Clear out the display_chain. Done when new symtabs are loaded,
1370 since this invalidates the types stored in many expressions. */
1373 clear_displays (void)
1377 while ((d
= display_chain
) != NULL
)
1380 display_chain
= d
->next
;
1385 /* Delete the auto-display number NUM. */
1388 delete_display (int num
)
1390 struct display
*d1
, *d
;
1393 error (_("No display number %d."), num
);
1395 if (display_chain
->number
== num
)
1398 display_chain
= d1
->next
;
1402 for (d
= display_chain
;; d
= d
->next
)
1405 error (_("No display number %d."), num
);
1406 if (d
->next
->number
== num
)
1416 /* Delete some values from the auto-display chain.
1417 Specify the element numbers. */
1420 undisplay_command (char *args
, int from_tty
)
1428 if (query ("Delete all auto-display expressions? "))
1437 while (*p1
>= '0' && *p1
<= '9')
1439 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1440 error (_("Arguments must be display numbers."));
1444 delete_display (num
);
1447 while (*p
== ' ' || *p
== '\t')
1453 /* Display a single auto-display.
1454 Do nothing if the display cannot be printed in the current context,
1455 or if the display is disabled. */
1458 do_one_display (struct display
*d
)
1460 int within_current_scope
;
1462 if (d
->enabled_p
== 0)
1466 within_current_scope
= contained_in (get_selected_block (0), d
->block
);
1468 within_current_scope
= 1;
1469 if (!within_current_scope
)
1472 current_display_number
= d
->number
;
1474 annotate_display_begin ();
1475 printf_filtered ("%d", d
->number
);
1476 annotate_display_number_end ();
1477 printf_filtered (": ");
1483 annotate_display_format ();
1485 printf_filtered ("x/");
1486 if (d
->format
.count
!= 1)
1487 printf_filtered ("%d", d
->format
.count
);
1488 printf_filtered ("%c", d
->format
.format
);
1489 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1490 printf_filtered ("%c", d
->format
.size
);
1491 printf_filtered (" ");
1493 annotate_display_expression ();
1495 print_expression (d
->exp
, gdb_stdout
);
1496 annotate_display_expression_end ();
1498 if (d
->format
.count
!= 1 || d
->format
.format
== 'i')
1499 printf_filtered ("\n");
1501 printf_filtered (" ");
1503 val
= evaluate_expression (d
->exp
);
1504 addr
= value_as_address (val
);
1505 if (d
->format
.format
== 'i')
1506 addr
= gdbarch_addr_bits_remove (current_gdbarch
, addr
);
1508 annotate_display_value ();
1510 do_examine (d
->format
, addr
);
1514 annotate_display_format ();
1516 if (d
->format
.format
)
1517 printf_filtered ("/%c ", d
->format
.format
);
1519 annotate_display_expression ();
1521 print_expression (d
->exp
, gdb_stdout
);
1522 annotate_display_expression_end ();
1524 printf_filtered (" = ");
1526 annotate_display_expression ();
1528 print_formatted (evaluate_expression (d
->exp
),
1529 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1530 printf_filtered ("\n");
1533 annotate_display_end ();
1535 gdb_flush (gdb_stdout
);
1536 current_display_number
= -1;
1539 /* Display all of the values on the auto-display chain which can be
1540 evaluated in the current scope. */
1547 for (d
= display_chain
; d
; d
= d
->next
)
1551 /* Delete the auto-display which we were in the process of displaying.
1552 This is done when there is an error or a signal. */
1555 disable_display (int num
)
1559 for (d
= display_chain
; d
; d
= d
->next
)
1560 if (d
->number
== num
)
1565 printf_unfiltered (_("No display number %d.\n"), num
);
1569 disable_current_display (void)
1571 if (current_display_number
>= 0)
1573 disable_display (current_display_number
);
1574 fprintf_unfiltered (gdb_stderr
, _("\
1575 Disabling display %d to avoid infinite recursion.\n"),
1576 current_display_number
);
1578 current_display_number
= -1;
1582 display_info (char *ignore
, int from_tty
)
1587 printf_unfiltered (_("There are no auto-display expressions now.\n"));
1589 printf_filtered (_("Auto-display expressions now in effect:\n\
1590 Num Enb Expression\n"));
1592 for (d
= display_chain
; d
; d
= d
->next
)
1594 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->enabled_p
]);
1596 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1598 else if (d
->format
.format
)
1599 printf_filtered ("/%c ", d
->format
.format
);
1600 print_expression (d
->exp
, gdb_stdout
);
1601 if (d
->block
&& !contained_in (get_selected_block (0), d
->block
))
1602 printf_filtered (_(" (cannot be evaluated in the current context)"));
1603 printf_filtered ("\n");
1604 gdb_flush (gdb_stdout
);
1609 enable_display (char *args
, int from_tty
)
1618 for (d
= display_chain
; d
; d
= d
->next
)
1625 while (*p1
>= '0' && *p1
<= '9')
1627 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1628 error (_("Arguments must be display numbers."));
1632 for (d
= display_chain
; d
; d
= d
->next
)
1633 if (d
->number
== num
)
1638 printf_unfiltered (_("No display number %d.\n"), num
);
1641 while (*p
== ' ' || *p
== '\t')
1647 disable_display_command (char *args
, int from_tty
)
1655 for (d
= display_chain
; d
; d
= d
->next
)
1662 while (*p1
>= '0' && *p1
<= '9')
1664 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1665 error (_("Arguments must be display numbers."));
1667 disable_display (atoi (p
));
1670 while (*p
== ' ' || *p
== '\t')
1676 /* Print the value in stack frame FRAME of a variable specified by a
1680 print_variable_value (struct symbol
*var
, struct frame_info
*frame
,
1681 struct ui_file
*stream
)
1683 struct value
*val
= read_var_value (var
, frame
);
1685 value_print (val
, stream
, 0, Val_pretty_default
);
1689 printf_command (char *arg
, int from_tty
)
1693 char *string
= NULL
;
1694 struct value
**val_args
;
1696 char *current_substring
;
1698 int allocated_args
= 20;
1699 struct cleanup
*old_cleanups
;
1701 val_args
= xmalloc (allocated_args
* sizeof (struct value
*));
1702 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
1705 error_no_arg (_("format-control string and values to print"));
1707 /* Skip white space before format string */
1708 while (*s
== ' ' || *s
== '\t')
1711 /* A format string should follow, enveloped in double quotes. */
1713 error (_("Bad format string, missing '\"'."));
1715 /* Parse the format-control string and copy it into the string STRING,
1716 processing some kinds of escape sequence. */
1718 f
= string
= (char *) alloca (strlen (s
) + 1);
1726 error (_("Bad format string, non-terminated '\"'."));
1759 /* ??? TODO: handle other escape sequences */
1760 error (_("Unrecognized escape character \\%c in format string."),
1770 /* Skip over " and following space and comma. */
1773 while (*s
== ' ' || *s
== '\t')
1776 if (*s
!= ',' && *s
!= 0)
1777 error (_("Invalid argument syntax"));
1781 while (*s
== ' ' || *s
== '\t')
1784 /* Need extra space for the '\0's. Doubling the size is sufficient. */
1785 substrings
= alloca (strlen (string
) * 2);
1786 current_substring
= substrings
;
1789 /* Now scan the string for %-specs and see what kinds of args they want.
1790 argclass[I] classifies the %-specs so we can give printf_filtered
1791 something of the right size. */
1795 int_arg
, long_arg
, long_long_arg
, ptr_arg
, string_arg
,
1796 double_arg
, long_double_arg
, decfloat_arg
1798 enum argclass
*argclass
;
1799 enum argclass this_argclass
;
1804 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
1811 int seen_hash
= 0, seen_zero
= 0, lcount
= 0, seen_prec
= 0;
1812 int seen_space
= 0, seen_plus
= 0;
1813 int seen_big_l
= 0, seen_h
= 0, seen_big_h
= 0;
1814 int seen_big_d
= 0, seen_double_big_d
= 0;
1817 /* Check the validity of the format specifier, and work
1818 out what argument it expects. We only accept C89
1819 format strings, with the exception of long long (which
1820 we autoconf for). */
1822 /* Skip over "%%". */
1829 /* The first part of a format specifier is a set of flag
1831 while (strchr ("0-+ #", *f
))
1844 /* The next part of a format specifier is a width. */
1845 while (strchr ("0123456789", *f
))
1848 /* The next part of a format specifier is a precision. */
1853 while (strchr ("0123456789", *f
))
1857 /* The next part of a format specifier is a length modifier. */
1878 /* Decimal32 modifier. */
1884 /* Decimal64 and Decimal128 modifiers. */
1889 /* Check for a Decimal128. */
1893 seen_double_big_d
= 1;
1909 if (seen_space
|| seen_plus
)
1916 this_argclass
= int_arg
;
1917 else if (lcount
== 1)
1918 this_argclass
= long_arg
;
1920 this_argclass
= long_long_arg
;
1927 this_argclass
= int_arg
;
1928 if (lcount
|| seen_h
|| seen_big_l
)
1930 if (seen_prec
|| seen_zero
|| seen_space
|| seen_plus
)
1935 this_argclass
= ptr_arg
;
1936 if (lcount
|| seen_h
|| seen_big_l
)
1938 if (seen_prec
|| seen_zero
|| seen_space
|| seen_plus
)
1943 this_argclass
= string_arg
;
1944 if (lcount
|| seen_h
|| seen_big_l
)
1946 if (seen_zero
|| seen_space
|| seen_plus
)
1955 if (seen_big_h
|| seen_big_d
|| seen_double_big_d
)
1956 this_argclass
= decfloat_arg
;
1957 else if (seen_big_l
)
1958 this_argclass
= long_double_arg
;
1960 this_argclass
= double_arg
;
1962 if (lcount
|| seen_h
)
1967 error (_("`*' not supported for precision or width in printf"));
1970 error (_("Format specifier `n' not supported in printf"));
1973 error (_("Incomplete format specifier at end of format string"));
1976 error (_("Unrecognized format specifier '%c' in printf"), *f
);
1980 error (_("Inappropriate modifiers to format specifier '%c' in printf"),
1985 if (lcount
> 1 && USE_PRINTF_I64
)
1987 /* Windows' printf does support long long, but not the usual way.
1988 Convert %lld to %I64d. */
1989 int length_before_ll
= f
- last_arg
- 1 - lcount
;
1990 strncpy (current_substring
, last_arg
, length_before_ll
);
1991 strcpy (current_substring
+ length_before_ll
, "I64");
1992 current_substring
[length_before_ll
+ 3] =
1993 last_arg
[length_before_ll
+ lcount
];
1994 current_substring
+= length_before_ll
+ 4;
1998 strncpy (current_substring
, last_arg
, f
- last_arg
);
1999 current_substring
+= f
- last_arg
;
2001 *current_substring
++ = '\0';
2003 argclass
[nargs_wanted
++] = this_argclass
;
2006 /* Now, parse all arguments and evaluate them.
2007 Store the VALUEs in VAL_ARGS. */
2012 if (nargs
== allocated_args
)
2013 val_args
= (struct value
**) xrealloc ((char *) val_args
,
2014 (allocated_args
*= 2)
2015 * sizeof (struct value
*));
2017 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2019 /* If format string wants a float, unchecked-convert the value to
2020 floating point of the same size */
2022 if (argclass
[nargs
] == double_arg
)
2024 struct type
*type
= value_type (val_args
[nargs
]);
2025 if (TYPE_LENGTH (type
) == sizeof (float))
2026 deprecated_set_value_type (val_args
[nargs
], builtin_type_float
);
2027 if (TYPE_LENGTH (type
) == sizeof (double))
2028 deprecated_set_value_type (val_args
[nargs
], builtin_type_double
);
2036 if (nargs
!= nargs_wanted
)
2037 error (_("Wrong number of arguments for specified format-string"));
2039 /* Now actually print them. */
2040 current_substring
= substrings
;
2041 for (i
= 0; i
< nargs
; i
++)
2043 switch (argclass
[i
])
2050 tem
= value_as_address (val_args
[i
]);
2052 /* This is a %s argument. Find the length of the string. */
2057 read_memory (tem
+ j
, &c
, 1);
2062 /* Copy the string contents into a string inside GDB. */
2063 str
= (gdb_byte
*) alloca (j
+ 1);
2065 read_memory (tem
, str
, j
);
2068 printf_filtered (current_substring
, (char *) str
);
2073 double val
= value_as_double (val_args
[i
]);
2074 printf_filtered (current_substring
, val
);
2077 case long_double_arg
:
2078 #ifdef HAVE_LONG_DOUBLE
2080 long double val
= value_as_double (val_args
[i
]);
2081 printf_filtered (current_substring
, val
);
2085 error (_("long double not supported in printf"));
2088 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2090 long long val
= value_as_long (val_args
[i
]);
2091 printf_filtered (current_substring
, val
);
2095 error (_("long long not supported in printf"));
2099 int val
= value_as_long (val_args
[i
]);
2100 printf_filtered (current_substring
, val
);
2105 long val
= value_as_long (val_args
[i
]);
2106 printf_filtered (current_substring
, val
);
2110 /* Handles decimal floating values. */
2113 const gdb_byte
*param_ptr
= value_contents (val_args
[i
]);
2114 #if defined (PRINTF_HAS_DECFLOAT)
2115 /* If we have native support for Decimal floating
2116 printing, handle it here. */
2117 printf_filtered (current_substring
, param_ptr
);
2120 /* As a workaround until vasprintf has native support for DFP
2121 we convert the DFP values to string and print them using
2122 the %s format specifier. */
2125 int nnull_chars
= 0;
2127 /* Parameter data. */
2128 struct type
*param_type
= value_type (val_args
[i
]);
2129 unsigned int param_len
= TYPE_LENGTH (param_type
);
2131 /* DFP output data. */
2132 struct value
*dfp_value
= NULL
;
2136 struct type
*dfp_type
= NULL
;
2137 char decstr
[MAX_DECIMAL_STRING
];
2139 /* Points to the end of the string so that we can go back
2140 and check for DFP length modifiers. */
2141 eos
= current_substring
+ strlen (current_substring
);
2143 /* Look for the float/double format specifier. */
2144 while (*eos
!= 'f' && *eos
!= 'e' && *eos
!= 'E'
2145 && *eos
!= 'g' && *eos
!= 'G')
2150 /* Search for the '%' char and extract the size and type of
2151 the output decimal value based on its modifiers
2152 (%Hf, %Df, %DDf). */
2153 while (*--sos
!= '%')
2158 dfp_type
= builtin_type (current_gdbarch
)->builtin_decfloat
;
2160 else if (*sos
== 'D' && *(sos
- 1) == 'D')
2163 dfp_type
= builtin_type (current_gdbarch
)->builtin_declong
;
2169 dfp_type
= builtin_type (current_gdbarch
)->builtin_decdouble
;
2173 /* Replace %Hf, %Df and %DDf with %s's. */
2176 /* Go through the whole format string and pull the correct
2177 number of chars back to compensate for the change in the
2178 format specifier. */
2179 while (nnull_chars
< nargs
- i
)
2187 /* Conversion between different DFP types. */
2188 if (TYPE_CODE (param_type
) == TYPE_CODE_DECFLOAT
)
2189 decimal_convert (param_ptr
, param_len
, dec
, dfp_len
);
2191 /* If this is a non-trivial conversion, just output 0.
2192 A correct converted value can be displayed by explicitly
2193 casting to a DFP type. */
2194 decimal_from_string (dec
, dfp_len
, "0");
2196 dfp_value
= value_from_decfloat (dfp_type
, dec
);
2198 dfp_ptr
= (gdb_byte
*) value_contents (dfp_value
);
2200 decimal_to_string (dfp_ptr
, dfp_len
, decstr
);
2202 /* Print the DFP value. */
2203 printf_filtered (current_substring
, decstr
);
2211 /* We avoid the host's %p because pointers are too
2212 likely to be the wrong size. The only interesting
2213 modifier for %p is a width; extract that, and then
2214 handle %p as glibc would: %#x or a literal "(nil)". */
2216 char *p
, *fmt
, *fmt_p
;
2217 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2218 long long val
= value_as_long (val_args
[i
]);
2220 long val
= value_as_long (val_args
[i
]);
2223 fmt
= alloca (strlen (current_substring
) + 5);
2225 /* Copy up to the leading %. */
2226 p
= current_substring
;
2230 int is_percent
= (*p
== '%');
2244 /* Copy any width. */
2245 while (*p
>= '0' && *p
< '9')
2248 gdb_assert (*p
== 'p' && *(p
+ 1) == '\0');
2251 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2257 printf_filtered (fmt
, val
);
2263 printf_filtered (fmt
, "(nil)");
2269 internal_error (__FILE__
, __LINE__
,
2270 _("failed internal consistency check"));
2272 /* Skip to the next substring. */
2273 current_substring
+= strlen (current_substring
) + 1;
2275 /* Print the portion of the format string after the last argument. */
2276 puts_filtered (last_arg
);
2278 do_cleanups (old_cleanups
);
2282 _initialize_printcmd (void)
2284 struct cmd_list_element
*c
;
2286 current_display_number
= -1;
2288 add_info ("address", address_info
,
2289 _("Describe where symbol SYM is stored."));
2291 add_info ("symbol", sym_info
, _("\
2292 Describe what symbol is at location ADDR.\n\
2293 Only for symbols with fixed locations (global or static scope)."));
2295 add_com ("x", class_vars
, x_command
, _("\
2296 Examine memory: x/FMT ADDRESS.\n\
2297 ADDRESS is an expression for the memory address to examine.\n\
2298 FMT is a repeat count followed by a format letter and a size letter.\n\
2299 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2300 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\
2301 Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2302 The specified number of objects of the specified size are printed\n\
2303 according to the format.\n\n\
2304 Defaults for format and size letters are those previously used.\n\
2305 Default count is 1. Default address is following last thing printed\n\
2306 with this command or \"print\"."));
2309 add_com ("whereis", class_vars
, whereis_command
,
2310 _("Print line number and file of definition of variable."));
2313 add_info ("display", display_info
, _("\
2314 Expressions to display when program stops, with code numbers."));
2316 add_cmd ("undisplay", class_vars
, undisplay_command
, _("\
2317 Cancel some expressions to be displayed when program stops.\n\
2318 Arguments are the code numbers of the expressions to stop displaying.\n\
2319 No argument means cancel all automatic-display expressions.\n\
2320 \"delete display\" has the same effect as this command.\n\
2321 Do \"info display\" to see current list of code numbers."),
2324 add_com ("display", class_vars
, display_command
, _("\
2325 Print value of expression EXP each time the program stops.\n\
2326 /FMT may be used before EXP as in the \"print\" command.\n\
2327 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2328 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2329 and examining is done as in the \"x\" command.\n\n\
2330 With no argument, display all currently requested auto-display expressions.\n\
2331 Use \"undisplay\" to cancel display requests previously made."));
2333 add_cmd ("display", class_vars
, enable_display
, _("\
2334 Enable some expressions to be displayed when program stops.\n\
2335 Arguments are the code numbers of the expressions to resume displaying.\n\
2336 No argument means enable all automatic-display expressions.\n\
2337 Do \"info display\" to see current list of code numbers."), &enablelist
);
2339 add_cmd ("display", class_vars
, disable_display_command
, _("\
2340 Disable some expressions to be displayed when program stops.\n\
2341 Arguments are the code numbers of the expressions to stop displaying.\n\
2342 No argument means disable all automatic-display expressions.\n\
2343 Do \"info display\" to see current list of code numbers."), &disablelist
);
2345 add_cmd ("display", class_vars
, undisplay_command
, _("\
2346 Cancel some expressions to be displayed when program stops.\n\
2347 Arguments are the code numbers of the expressions to stop displaying.\n\
2348 No argument means cancel all automatic-display expressions.\n\
2349 Do \"info display\" to see current list of code numbers."), &deletelist
);
2351 add_com ("printf", class_vars
, printf_command
, _("\
2352 printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2353 This is useful for formatted output in user-defined commands."));
2355 add_com ("output", class_vars
, output_command
, _("\
2356 Like \"print\" but don't put in value history and don't print newline.\n\
2357 This is useful in user-defined commands."));
2359 add_prefix_cmd ("set", class_vars
, set_command
, _("\
2360 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2361 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2362 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2363 with $), a register (a few standard names starting with $), or an actual\n\
2364 variable in the program being debugged. EXP is any valid expression.\n\
2365 Use \"set variable\" for variables with names identical to set subcommands.\n\
2367 With a subcommand, this command modifies parts of the gdb environment.\n\
2368 You can see these environment settings with the \"show\" command."),
2369 &setlist
, "set ", 1, &cmdlist
);
2371 add_com ("assign", class_vars
, set_command
, _("\
2372 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2373 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2374 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2375 with $), a register (a few standard names starting with $), or an actual\n\
2376 variable in the program being debugged. EXP is any valid expression.\n\
2377 Use \"set variable\" for variables with names identical to set subcommands.\n\
2378 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2379 You can see these environment settings with the \"show\" command."));
2381 /* "call" is the same as "set", but handy for dbx users to call fns. */
2382 c
= add_com ("call", class_vars
, call_command
, _("\
2383 Call a function in the program.\n\
2384 The argument is the function name and arguments, in the notation of the\n\
2385 current working language. The result is printed and saved in the value\n\
2386 history, if it is not void."));
2387 set_cmd_completer (c
, location_completer
);
2389 add_cmd ("variable", class_vars
, set_command
, _("\
2390 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2391 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2392 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2393 with $), a register (a few standard names starting with $), or an actual\n\
2394 variable in the program being debugged. EXP is any valid expression.\n\
2395 This may usually be abbreviated to simply \"set\"."),
2398 c
= add_com ("print", class_vars
, print_command
, _("\
2399 Print value of expression EXP.\n\
2400 Variables accessible are those of the lexical environment of the selected\n\
2401 stack frame, plus all those whose scope is global or an entire file.\n\
2403 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2404 $$NUM refers to NUM'th value back from the last one.\n\
2405 Names starting with $ refer to registers (with the values they would have\n\
2406 if the program were to return to the stack frame now selected, restoring\n\
2407 all registers saved by frames farther in) or else to debugger\n\
2408 \"convenience\" variables (any such name not a known register).\n\
2409 Use assignment expressions to give values to convenience variables.\n\
2411 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2412 @ is a binary operator for treating consecutive data objects\n\
2413 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2414 element is FOO, whose second element is stored in the space following\n\
2415 where FOO is stored, etc. FOO must be an expression whose value\n\
2416 resides in memory.\n\
2418 EXP may be preceded with /FMT, where FMT is a format letter\n\
2419 but no count or size letter (see \"x\" command)."));
2420 set_cmd_completer (c
, location_completer
);
2421 add_com_alias ("p", "print", class_vars
, 1);
2423 c
= add_com ("inspect", class_vars
, inspect_command
, _("\
2424 Same as \"print\" command, except that if you are running in the epoch\n\
2425 environment, the value is printed in its own window."));
2426 set_cmd_completer (c
, location_completer
);
2428 add_setshow_uinteger_cmd ("max-symbolic-offset", no_class
,
2429 &max_symbolic_offset
, _("\
2430 Set the largest offset that will be printed in <symbol+1234> form."), _("\
2431 Show the largest offset that will be printed in <symbol+1234> form."), NULL
,
2433 show_max_symbolic_offset
,
2434 &setprintlist
, &showprintlist
);
2435 add_setshow_boolean_cmd ("symbol-filename", no_class
,
2436 &print_symbol_filename
, _("\
2437 Set printing of source filename and line number with <symbol>."), _("\
2438 Show printing of source filename and line number with <symbol>."), NULL
,
2440 show_print_symbol_filename
,
2441 &setprintlist
, &showprintlist
);
2443 /* For examine/instruction a single byte quantity is specified as
2444 the data. This avoids problems with value_at_lazy() requiring a
2445 valid data type (and rejecting VOID). */
2446 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2448 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2449 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2450 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2451 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);