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 /* Return builtin floating point type of same length as TYPE.
313 If no such type is found, return TYPE itself. */
315 float_type_from_length (struct gdbarch
*gdbarch
, struct type
*type
)
317 const struct builtin_type
*builtin
= builtin_type (gdbarch
);
318 unsigned int len
= TYPE_LENGTH (type
);
320 if (len
== TYPE_LENGTH (builtin
->builtin_float
))
321 type
= builtin
->builtin_float
;
322 else if (len
== TYPE_LENGTH (builtin
->builtin_double
))
323 type
= builtin
->builtin_double
;
324 else if (len
== TYPE_LENGTH (builtin
->builtin_long_double
))
325 type
= builtin
->builtin_long_double
;
330 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
331 according to letters FORMAT and SIZE on STREAM.
332 FORMAT may not be zero. Formats s and i are not supported at this level.
334 This is how the elements of an array or structure are printed
338 print_scalar_formatted (const void *valaddr
, struct type
*type
,
339 int format
, int size
, struct ui_file
*stream
)
341 LONGEST val_long
= 0;
342 unsigned int len
= TYPE_LENGTH (type
);
343 enum bfd_endian byte_order
= gdbarch_byte_order (current_gdbarch
);
345 /* If we get here with a string format, try again without it. Go
346 all the way back to the language printers, which may call us
350 val_print (type
, valaddr
, 0, 0, stream
, 0, 0, 0, Val_pretty_default
,
355 if (len
> sizeof(LONGEST
) &&
356 (TYPE_CODE (type
) == TYPE_CODE_INT
357 || TYPE_CODE (type
) == TYPE_CODE_ENUM
))
362 print_octal_chars (stream
, valaddr
, len
, byte_order
);
366 print_decimal_chars (stream
, valaddr
, len
, byte_order
);
369 print_binary_chars (stream
, valaddr
, len
, byte_order
);
372 print_hex_chars (stream
, valaddr
, len
, byte_order
);
375 print_char_chars (stream
, valaddr
, len
, byte_order
);
383 val_long
= unpack_long (type
, valaddr
);
385 /* If the value is a pointer, and pointers and addresses are not the
386 same, then at this point, the value's length (in target bytes) is
387 gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
388 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
389 len
= gdbarch_addr_bit (current_gdbarch
) / TARGET_CHAR_BIT
;
391 /* If we are printing it as unsigned, truncate it in case it is actually
392 a negative signed value (e.g. "print/u (short)-1" should print 65535
393 (if shorts are 16 bits) instead of 4294967295). */
396 if (len
< sizeof (LONGEST
))
397 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
405 /* No size specified, like in print. Print varying # of digits. */
406 print_longest (stream
, 'x', 1, val_long
);
415 print_longest (stream
, size
, 1, val_long
);
418 error (_("Undefined output size \"%c\"."), size
);
423 print_longest (stream
, 'd', 1, val_long
);
427 print_longest (stream
, 'u', 0, val_long
);
432 print_longest (stream
, 'o', 1, val_long
);
434 fprintf_filtered (stream
, "0");
439 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
440 print_address (addr
, stream
);
445 if (TYPE_UNSIGNED (type
))
446 value_print (value_from_longest (builtin_type_true_unsigned_char
,
448 stream
, 0, Val_pretty_default
);
450 value_print (value_from_longest (builtin_type_true_char
, val_long
),
451 stream
, 0, Val_pretty_default
);
455 type
= float_type_from_length (current_gdbarch
, type
);
456 print_floating (valaddr
, type
, stream
);
460 internal_error (__FILE__
, __LINE__
,
461 _("failed internal consistency check"));
464 /* Binary; 't' stands for "two". */
466 char bits
[8 * (sizeof val_long
) + 1];
467 char buf
[8 * (sizeof val_long
) + 32];
472 width
= 8 * (sizeof val_long
);
489 error (_("Undefined output size \"%c\"."), size
);
495 bits
[width
] = (val_long
& 1) ? '1' : '0';
500 while (*cp
&& *cp
== '0')
506 fputs_filtered (buf
, stream
);
511 error (_("Undefined output format \"%c\"."), format
);
515 /* Specify default address for `x' command.
516 The `info lines' command uses this. */
519 set_next_address (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
521 struct type
*ptr_type
= builtin_type (gdbarch
)->builtin_data_ptr
;
525 /* Make address available to the user as $_. */
526 set_internalvar (lookup_internalvar ("_"),
527 value_from_pointer (ptr_type
, addr
));
530 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
531 after LEADIN. Print nothing if no symbolic name is found nearby.
532 Optionally also print source file and line number, if available.
533 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
534 or to interpret it as a possible C++ name and convert it back to source
535 form. However note that DO_DEMANGLE can be overridden by the specific
536 settings of the demangle and asm_demangle variables. */
539 print_address_symbolic (CORE_ADDR addr
, struct ui_file
*stream
,
540 int do_demangle
, char *leadin
)
543 char *filename
= NULL
;
548 /* Throw away both name and filename. */
549 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
550 make_cleanup (free_current_contents
, &filename
);
552 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
,
553 &filename
, &line
, &unmapped
))
555 do_cleanups (cleanup_chain
);
559 fputs_filtered (leadin
, stream
);
561 fputs_filtered ("<*", stream
);
563 fputs_filtered ("<", stream
);
564 fputs_filtered (name
, stream
);
566 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
568 /* Append source filename and line number if desired. Give specific
569 line # of this addr, if we have it; else line # of the nearest symbol. */
570 if (print_symbol_filename
&& filename
!= NULL
)
573 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
575 fprintf_filtered (stream
, " in %s", filename
);
578 fputs_filtered ("*>", stream
);
580 fputs_filtered (">", stream
);
582 do_cleanups (cleanup_chain
);
585 /* Given an address ADDR return all the elements needed to print the
586 address in a symbolic form. NAME can be mangled or not depending
587 on DO_DEMANGLE (and also on the asm_demangle global variable,
588 manipulated via ''set print asm-demangle''). Return 0 in case of
589 success, when all the info in the OUT paramters is valid. Return 1
592 build_address_symbolic (CORE_ADDR addr
, /* IN */
593 int do_demangle
, /* IN */
594 char **name
, /* OUT */
595 int *offset
, /* OUT */
596 char **filename
, /* OUT */
598 int *unmapped
) /* OUT */
600 struct minimal_symbol
*msymbol
;
601 struct symbol
*symbol
;
602 CORE_ADDR name_location
= 0;
603 struct obj_section
*section
= NULL
;
604 char *name_temp
= "";
606 /* Let's say it is unmapped. */
609 /* Determine if the address is in an overlay, and whether it is
611 if (overlay_debugging
)
613 section
= find_pc_overlay (addr
);
614 if (pc_in_unmapped_range (addr
, section
))
617 addr
= overlay_mapped_address (addr
, section
);
621 /* First try to find the address in the symbol table, then
622 in the minsyms. Take the closest one. */
624 /* This is defective in the sense that it only finds text symbols. So
625 really this is kind of pointless--we should make sure that the
626 minimal symbols have everything we need (by changing that we could
627 save some memory, but for many debug format--ELF/DWARF or
628 anything/stabs--it would be inconvenient to eliminate those minimal
630 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
631 symbol
= find_pc_sect_function (addr
, section
);
635 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
636 if (do_demangle
|| asm_demangle
)
637 name_temp
= SYMBOL_PRINT_NAME (symbol
);
639 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
644 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
646 /* The msymbol is closer to the address than the symbol;
647 use the msymbol instead. */
649 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
650 if (do_demangle
|| asm_demangle
)
651 name_temp
= SYMBOL_PRINT_NAME (msymbol
);
653 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
656 if (symbol
== NULL
&& msymbol
== NULL
)
659 /* If the nearest symbol is too far away, don't print anything symbolic. */
661 /* For when CORE_ADDR is larger than unsigned int, we do math in
662 CORE_ADDR. But when we detect unsigned wraparound in the
663 CORE_ADDR math, we ignore this test and print the offset,
664 because addr+max_symbolic_offset has wrapped through the end
665 of the address space back to the beginning, giving bogus comparison. */
666 if (addr
> name_location
+ max_symbolic_offset
667 && name_location
+ max_symbolic_offset
> name_location
)
670 *offset
= addr
- name_location
;
672 *name
= xstrdup (name_temp
);
674 if (print_symbol_filename
)
676 struct symtab_and_line sal
;
678 sal
= find_pc_sect_line (addr
, section
, 0);
682 *filename
= xstrdup (sal
.symtab
->filename
);
690 /* Print address ADDR symbolically on STREAM.
691 First print it as a number. Then perhaps print
692 <SYMBOL + OFFSET> after the number. */
695 print_address (CORE_ADDR addr
, struct ui_file
*stream
)
697 fputs_filtered (paddress (addr
), stream
);
698 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
701 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
702 controls whether to print the symbolic name "raw" or demangled.
703 Global setting "addressprint" controls whether to print hex address
707 print_address_demangle (CORE_ADDR addr
, struct ui_file
*stream
,
712 fprintf_filtered (stream
, "0");
714 else if (addressprint
)
716 fputs_filtered (paddress (addr
), stream
);
717 print_address_symbolic (addr
, stream
, do_demangle
, " ");
721 print_address_symbolic (addr
, stream
, do_demangle
, "");
726 /* These are the types that $__ will get after an examine command of one
729 static struct type
*examine_i_type
;
731 static struct type
*examine_b_type
;
732 static struct type
*examine_h_type
;
733 static struct type
*examine_w_type
;
734 static struct type
*examine_g_type
;
736 /* Examine data at address ADDR in format FMT.
737 Fetch it from memory and print on gdb_stdout. */
740 do_examine (struct format_data fmt
, CORE_ADDR addr
)
745 struct type
*val_type
= NULL
;
754 /* String or instruction format implies fetch single bytes
755 regardless of the specified size. */
756 if (format
== 's' || format
== 'i')
760 val_type
= examine_i_type
;
761 else if (size
== 'b')
762 val_type
= examine_b_type
;
763 else if (size
== 'h')
764 val_type
= examine_h_type
;
765 else if (size
== 'w')
766 val_type
= examine_w_type
;
767 else if (size
== 'g')
768 val_type
= examine_g_type
;
775 if (format
== 's' || format
== 'i')
778 /* Print as many objects as specified in COUNT, at most maxelts per line,
779 with the address of the next one at the start of each line. */
784 print_address (next_address
, gdb_stdout
);
785 printf_filtered (":");
790 printf_filtered ("\t");
791 /* Note that print_formatted sets next_address for the next
793 last_examine_address
= next_address
;
795 if (last_examine_value
)
796 value_free (last_examine_value
);
798 /* The value to be displayed is not fetched greedily.
799 Instead, to avoid the possibility of a fetched value not
800 being used, its retrieval is delayed until the print code
801 uses it. When examining an instruction stream, the
802 disassembler will perform its own memory fetch using just
803 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
804 the disassembler be modified so that LAST_EXAMINE_VALUE
805 is left with the byte sequence from the last complete
806 instruction fetched from memory? */
807 last_examine_value
= value_at_lazy (val_type
, next_address
);
809 if (last_examine_value
)
810 release_value (last_examine_value
);
812 print_formatted (last_examine_value
, format
, size
, gdb_stdout
);
814 /* Display any branch delay slots following the final insn. */
815 if (format
== 'i' && count
== 1)
816 count
+= branch_delay_insns
;
818 printf_filtered ("\n");
819 gdb_flush (gdb_stdout
);
824 validate_format (struct format_data fmt
, char *cmdname
)
827 error (_("Size letters are meaningless in \"%s\" command."), cmdname
);
829 error (_("Item count other than 1 is meaningless in \"%s\" command."),
831 if (fmt
.format
== 'i')
832 error (_("Format letter \"%c\" is meaningless in \"%s\" command."),
833 fmt
.format
, cmdname
);
836 /* Evaluate string EXP as an expression in the current language and
837 print the resulting value. EXP may contain a format specifier as the
838 first argument ("/x myvar" for example, to print myvar in hex). */
841 print_command_1 (char *exp
, int inspect
, int voidprint
)
843 struct expression
*expr
;
844 struct cleanup
*old_chain
= 0;
847 struct format_data fmt
;
850 /* Pass inspect flag to the rest of the print routines in a global
852 inspect_it
= inspect
;
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 int histindex
= record_latest_value (val
);
885 annotate_value_history_begin (histindex
, value_type (val
));
887 annotate_value_begin (value_type (val
));
890 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"",
892 else if (histindex
>= 0)
893 printf_filtered ("$%d = ", histindex
);
896 annotate_value_history_value ();
898 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
899 printf_filtered ("\n");
902 annotate_value_history_end ();
904 annotate_value_end ();
907 printf_unfiltered ("\") )\030");
911 do_cleanups (old_chain
);
912 inspect_it
= 0; /* Reset print routines to normal. */
916 print_command (char *exp
, int from_tty
)
918 print_command_1 (exp
, 0, 1);
921 /* Same as print, except in epoch, it gets its own window. */
923 inspect_command (char *exp
, int from_tty
)
925 extern int epoch_interface
;
927 print_command_1 (exp
, epoch_interface
, 1);
930 /* Same as print, except it doesn't print void results. */
932 call_command (char *exp
, int from_tty
)
934 print_command_1 (exp
, 0, 0);
938 output_command (char *exp
, int from_tty
)
940 struct expression
*expr
;
941 struct cleanup
*old_chain
;
944 struct format_data fmt
;
948 if (exp
&& *exp
== '/')
951 fmt
= decode_format (&exp
, 0, 0);
952 validate_format (fmt
, "output");
956 expr
= parse_expression (exp
);
957 old_chain
= make_cleanup (free_current_contents
, &expr
);
959 val
= evaluate_expression (expr
);
961 annotate_value_begin (value_type (val
));
963 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
965 annotate_value_end ();
968 gdb_flush (gdb_stdout
);
970 do_cleanups (old_chain
);
974 set_command (char *exp
, int from_tty
)
976 struct expression
*expr
= parse_expression (exp
);
977 struct cleanup
*old_chain
=
978 make_cleanup (free_current_contents
, &expr
);
979 evaluate_expression (expr
);
980 do_cleanups (old_chain
);
984 sym_info (char *arg
, int from_tty
)
986 struct minimal_symbol
*msymbol
;
987 struct objfile
*objfile
;
988 struct obj_section
*osect
;
989 CORE_ADDR addr
, sect_addr
;
994 error_no_arg (_("address"));
996 addr
= parse_and_eval_address (arg
);
997 ALL_OBJSECTIONS (objfile
, osect
)
999 /* Only process each object file once, even if there's a separate
1001 if (objfile
->separate_debug_objfile_backlink
)
1004 sect_addr
= overlay_mapped_address (addr
, osect
);
1006 if (obj_section_addr (osect
) <= sect_addr
1007 && sect_addr
< obj_section_endaddr (osect
)
1008 && (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, osect
)))
1011 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1013 printf_filtered ("%s + %u in ",
1014 SYMBOL_PRINT_NAME (msymbol
), offset
);
1016 printf_filtered ("%s in ",
1017 SYMBOL_PRINT_NAME (msymbol
));
1018 if (pc_in_unmapped_range (addr
, osect
))
1019 printf_filtered (_("load address range of "));
1020 if (section_is_overlay (osect
))
1021 printf_filtered (_("%s overlay "),
1022 section_is_mapped (osect
) ? "mapped" : "unmapped");
1023 printf_filtered (_("section %s"), osect
->the_bfd_section
->name
);
1024 printf_filtered ("\n");
1028 printf_filtered (_("No symbol matches %s.\n"), arg
);
1032 address_info (char *exp
, int from_tty
)
1035 struct minimal_symbol
*msymbol
;
1037 struct obj_section
*section
;
1038 CORE_ADDR load_addr
;
1039 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1040 if exp is a field of `this'. */
1043 error (_("Argument required."));
1045 sym
= lookup_symbol (exp
, get_selected_block (0), VAR_DOMAIN
,
1046 &is_a_field_of_this
);
1049 if (is_a_field_of_this
)
1051 printf_filtered ("Symbol \"");
1052 fprintf_symbol_filtered (gdb_stdout
, exp
,
1053 current_language
->la_language
, DMGL_ANSI
);
1054 printf_filtered ("\" is a field of the local class variable ");
1055 if (current_language
->la_language
== language_objc
)
1056 printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
1058 printf_filtered ("`this'\n");
1062 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1064 if (msymbol
!= NULL
)
1066 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1068 printf_filtered ("Symbol \"");
1069 fprintf_symbol_filtered (gdb_stdout
, exp
,
1070 current_language
->la_language
, DMGL_ANSI
);
1071 printf_filtered ("\" is at ");
1072 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1073 printf_filtered (" in a file compiled without debugging");
1074 section
= SYMBOL_OBJ_SECTION (msymbol
);
1075 if (section_is_overlay (section
))
1077 load_addr
= overlay_unmapped_address (load_addr
, section
);
1078 printf_filtered (",\n -- loaded at ");
1079 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1080 printf_filtered (" in overlay section %s",
1081 section
->the_bfd_section
->name
);
1083 printf_filtered (".\n");
1086 error (_("No symbol \"%s\" in current context."), exp
);
1090 printf_filtered ("Symbol \"");
1091 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_PRINT_NAME (sym
),
1092 current_language
->la_language
, DMGL_ANSI
);
1093 printf_filtered ("\" is ");
1094 val
= SYMBOL_VALUE (sym
);
1095 section
= SYMBOL_OBJ_SECTION (sym
);
1097 switch (SYMBOL_CLASS (sym
))
1100 case LOC_CONST_BYTES
:
1101 printf_filtered ("constant");
1105 printf_filtered ("a label at address ");
1106 fputs_filtered (paddress (load_addr
= SYMBOL_VALUE_ADDRESS (sym
)),
1108 if (section_is_overlay (section
))
1110 load_addr
= overlay_unmapped_address (load_addr
, section
);
1111 printf_filtered (",\n -- loaded at ");
1112 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1113 printf_filtered (" in overlay section %s",
1114 section
->the_bfd_section
->name
);
1119 /* FIXME: cagney/2004-01-26: It should be possible to
1120 unconditionally call the SYMBOL_OPS method when available.
1121 Unfortunately DWARF 2 stores the frame-base (instead of the
1122 function) location in a function's symbol. Oops! For the
1123 moment enable this when/where applicable. */
1124 SYMBOL_OPS (sym
)->describe_location (sym
, gdb_stdout
);
1128 if (SYMBOL_IS_ARGUMENT (sym
))
1129 printf_filtered (_("an argument in register %s"),
1130 gdbarch_register_name (current_gdbarch
, val
));
1132 printf_filtered (_("a variable in register %s"),
1133 gdbarch_register_name (current_gdbarch
, val
));
1137 printf_filtered (_("static storage at address "));
1138 fputs_filtered (paddress (load_addr
= SYMBOL_VALUE_ADDRESS (sym
)),
1140 if (section_is_overlay (section
))
1142 load_addr
= overlay_unmapped_address (load_addr
, section
);
1143 printf_filtered (_(",\n -- loaded at "));
1144 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1145 printf_filtered (_(" in overlay section %s"),
1146 section
->the_bfd_section
->name
);
1150 case LOC_REGPARM_ADDR
:
1151 printf_filtered (_("address of an argument in register %s"),
1152 gdbarch_register_name (current_gdbarch
, val
));
1156 printf_filtered (_("an argument at offset %ld"), val
);
1160 printf_filtered (_("a local variable at frame offset %ld"), val
);
1164 printf_filtered (_("a reference argument at offset %ld"), val
);
1168 printf_filtered (_("a typedef"));
1172 printf_filtered (_("a function at address "));
1173 load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1174 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1175 if (section_is_overlay (section
))
1177 load_addr
= overlay_unmapped_address (load_addr
, section
);
1178 printf_filtered (_(",\n -- loaded at "));
1179 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1180 printf_filtered (_(" in overlay section %s"),
1181 section
->the_bfd_section
->name
);
1185 case LOC_UNRESOLVED
:
1187 struct minimal_symbol
*msym
;
1189 msym
= lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym
), NULL
, NULL
);
1191 printf_filtered ("unresolved");
1194 section
= SYMBOL_OBJ_SECTION (msym
);
1195 printf_filtered (_("static storage at address "));
1196 load_addr
= SYMBOL_VALUE_ADDRESS (msym
);
1197 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1198 if (section_is_overlay (section
))
1200 load_addr
= overlay_unmapped_address (load_addr
, section
);
1201 printf_filtered (_(",\n -- loaded at "));
1202 fputs_filtered (paddress (load_addr
), gdb_stdout
);
1203 printf_filtered (_(" in overlay section %s"),
1204 section
->the_bfd_section
->name
);
1210 case LOC_OPTIMIZED_OUT
:
1211 printf_filtered (_("optimized out"));
1215 printf_filtered (_("of unknown (botched) type"));
1218 printf_filtered (".\n");
1223 x_command (char *exp
, int from_tty
)
1225 struct expression
*expr
;
1226 struct format_data fmt
;
1227 struct cleanup
*old_chain
;
1230 fmt
.format
= last_format
;
1231 fmt
.size
= last_size
;
1234 if (exp
&& *exp
== '/')
1237 fmt
= decode_format (&exp
, last_format
, last_size
);
1240 /* If we have an expression, evaluate it and use it as the address. */
1242 if (exp
!= 0 && *exp
!= 0)
1244 expr
= parse_expression (exp
);
1245 /* Cause expression not to be there any more if this command is
1246 repeated with Newline. But don't clobber a user-defined
1247 command's definition. */
1250 old_chain
= make_cleanup (free_current_contents
, &expr
);
1251 val
= evaluate_expression (expr
);
1252 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_REF
)
1253 val
= value_ind (val
);
1254 /* In rvalue contexts, such as this, functions are coerced into
1255 pointers to functions. This makes "x/i main" work. */
1256 if (/* last_format == 'i' && */
1257 TYPE_CODE (value_type (val
)) == TYPE_CODE_FUNC
1258 && VALUE_LVAL (val
) == lval_memory
)
1259 next_address
= VALUE_ADDRESS (val
);
1261 next_address
= value_as_address (val
);
1262 do_cleanups (old_chain
);
1265 do_examine (fmt
, next_address
);
1267 /* If the examine succeeds, we remember its size and format for next
1269 last_size
= fmt
.size
;
1270 last_format
= fmt
.format
;
1272 /* Set a couple of internal variables if appropriate. */
1273 if (last_examine_value
)
1275 /* Make last address examined available to the user as $_. Use
1276 the correct pointer type. */
1277 struct type
*pointer_type
1278 = lookup_pointer_type (value_type (last_examine_value
));
1279 set_internalvar (lookup_internalvar ("_"),
1280 value_from_pointer (pointer_type
,
1281 last_examine_address
));
1283 /* Make contents of last address examined available to the user
1284 as $__. If the last value has not been fetched from memory
1285 then don't fetch it now; instead mark it by voiding the $__
1287 if (value_lazy (last_examine_value
))
1288 set_internalvar (lookup_internalvar ("__"),
1289 allocate_value (builtin_type_void
));
1291 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1296 /* Add an expression to the auto-display chain.
1297 Specify the expression. */
1300 display_command (char *exp
, int from_tty
)
1302 struct format_data fmt
;
1303 struct expression
*expr
;
1304 struct display
*new;
1308 /* NOTE: cagney/2003-02-13 The `tui_active' was previously
1310 if (tui_active
&& exp
!= NULL
&& *exp
== '$')
1311 display_it
= (tui_set_layout_for_display_command (exp
) == TUI_FAILURE
);
1325 fmt
= decode_format (&exp
, 0, 0);
1326 if (fmt
.size
&& fmt
.format
== 0)
1328 if (fmt
.format
== 'i' || fmt
.format
== 's')
1338 innermost_block
= 0;
1339 expr
= parse_expression (exp
);
1341 new = (struct display
*) xmalloc (sizeof (struct display
));
1344 new->block
= innermost_block
;
1345 new->next
= display_chain
;
1346 new->number
= ++display_number
;
1349 display_chain
= new;
1351 if (from_tty
&& target_has_execution
)
1352 do_one_display (new);
1359 free_display (struct display
*d
)
1365 /* Clear out the display_chain. Done when new symtabs are loaded,
1366 since this invalidates the types stored in many expressions. */
1369 clear_displays (void)
1373 while ((d
= display_chain
) != NULL
)
1376 display_chain
= d
->next
;
1381 /* Delete the auto-display number NUM. */
1384 delete_display (int num
)
1386 struct display
*d1
, *d
;
1389 error (_("No display number %d."), num
);
1391 if (display_chain
->number
== num
)
1394 display_chain
= d1
->next
;
1398 for (d
= display_chain
;; d
= d
->next
)
1401 error (_("No display number %d."), num
);
1402 if (d
->next
->number
== num
)
1412 /* Delete some values from the auto-display chain.
1413 Specify the element numbers. */
1416 undisplay_command (char *args
, int from_tty
)
1424 if (query ("Delete all auto-display expressions? "))
1433 while (*p1
>= '0' && *p1
<= '9')
1435 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1436 error (_("Arguments must be display numbers."));
1440 delete_display (num
);
1443 while (*p
== ' ' || *p
== '\t')
1449 /* Display a single auto-display.
1450 Do nothing if the display cannot be printed in the current context,
1451 or if the display is disabled. */
1454 do_one_display (struct display
*d
)
1456 int within_current_scope
;
1458 if (d
->enabled_p
== 0)
1462 within_current_scope
= contained_in (get_selected_block (0), d
->block
);
1464 within_current_scope
= 1;
1465 if (!within_current_scope
)
1468 current_display_number
= d
->number
;
1470 annotate_display_begin ();
1471 printf_filtered ("%d", d
->number
);
1472 annotate_display_number_end ();
1473 printf_filtered (": ");
1479 annotate_display_format ();
1481 printf_filtered ("x/");
1482 if (d
->format
.count
!= 1)
1483 printf_filtered ("%d", d
->format
.count
);
1484 printf_filtered ("%c", d
->format
.format
);
1485 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1486 printf_filtered ("%c", d
->format
.size
);
1487 printf_filtered (" ");
1489 annotate_display_expression ();
1491 print_expression (d
->exp
, gdb_stdout
);
1492 annotate_display_expression_end ();
1494 if (d
->format
.count
!= 1 || d
->format
.format
== 'i')
1495 printf_filtered ("\n");
1497 printf_filtered (" ");
1499 val
= evaluate_expression (d
->exp
);
1500 addr
= value_as_address (val
);
1501 if (d
->format
.format
== 'i')
1502 addr
= gdbarch_addr_bits_remove (current_gdbarch
, addr
);
1504 annotate_display_value ();
1506 do_examine (d
->format
, addr
);
1510 annotate_display_format ();
1512 if (d
->format
.format
)
1513 printf_filtered ("/%c ", d
->format
.format
);
1515 annotate_display_expression ();
1517 print_expression (d
->exp
, gdb_stdout
);
1518 annotate_display_expression_end ();
1520 printf_filtered (" = ");
1522 annotate_display_expression ();
1524 print_formatted (evaluate_expression (d
->exp
),
1525 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1526 printf_filtered ("\n");
1529 annotate_display_end ();
1531 gdb_flush (gdb_stdout
);
1532 current_display_number
= -1;
1535 /* Display all of the values on the auto-display chain which can be
1536 evaluated in the current scope. */
1543 for (d
= display_chain
; d
; d
= d
->next
)
1547 /* Delete the auto-display which we were in the process of displaying.
1548 This is done when there is an error or a signal. */
1551 disable_display (int num
)
1555 for (d
= display_chain
; d
; d
= d
->next
)
1556 if (d
->number
== num
)
1561 printf_unfiltered (_("No display number %d.\n"), num
);
1565 disable_current_display (void)
1567 if (current_display_number
>= 0)
1569 disable_display (current_display_number
);
1570 fprintf_unfiltered (gdb_stderr
, _("\
1571 Disabling display %d to avoid infinite recursion.\n"),
1572 current_display_number
);
1574 current_display_number
= -1;
1578 display_info (char *ignore
, int from_tty
)
1583 printf_unfiltered (_("There are no auto-display expressions now.\n"));
1585 printf_filtered (_("Auto-display expressions now in effect:\n\
1586 Num Enb Expression\n"));
1588 for (d
= display_chain
; d
; d
= d
->next
)
1590 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->enabled_p
]);
1592 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1594 else if (d
->format
.format
)
1595 printf_filtered ("/%c ", d
->format
.format
);
1596 print_expression (d
->exp
, gdb_stdout
);
1597 if (d
->block
&& !contained_in (get_selected_block (0), d
->block
))
1598 printf_filtered (_(" (cannot be evaluated in the current context)"));
1599 printf_filtered ("\n");
1600 gdb_flush (gdb_stdout
);
1605 enable_display (char *args
, int from_tty
)
1614 for (d
= display_chain
; d
; d
= d
->next
)
1621 while (*p1
>= '0' && *p1
<= '9')
1623 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1624 error (_("Arguments must be display numbers."));
1628 for (d
= display_chain
; d
; d
= d
->next
)
1629 if (d
->number
== num
)
1634 printf_unfiltered (_("No display number %d.\n"), num
);
1637 while (*p
== ' ' || *p
== '\t')
1643 disable_display_command (char *args
, int from_tty
)
1651 for (d
= display_chain
; d
; d
= d
->next
)
1658 while (*p1
>= '0' && *p1
<= '9')
1660 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1661 error (_("Arguments must be display numbers."));
1663 disable_display (atoi (p
));
1666 while (*p
== ' ' || *p
== '\t')
1672 /* Print the value in stack frame FRAME of a variable specified by a
1676 print_variable_value (struct symbol
*var
, struct frame_info
*frame
,
1677 struct ui_file
*stream
)
1679 struct value
*val
= read_var_value (var
, frame
);
1681 value_print (val
, stream
, 0, Val_pretty_default
);
1685 printf_command (char *arg
, int from_tty
)
1689 char *string
= NULL
;
1690 struct value
**val_args
;
1692 char *current_substring
;
1694 int allocated_args
= 20;
1695 struct cleanup
*old_cleanups
;
1697 val_args
= xmalloc (allocated_args
* sizeof (struct value
*));
1698 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
1701 error_no_arg (_("format-control string and values to print"));
1703 /* Skip white space before format string */
1704 while (*s
== ' ' || *s
== '\t')
1707 /* A format string should follow, enveloped in double quotes. */
1709 error (_("Bad format string, missing '\"'."));
1711 /* Parse the format-control string and copy it into the string STRING,
1712 processing some kinds of escape sequence. */
1714 f
= string
= (char *) alloca (strlen (s
) + 1);
1722 error (_("Bad format string, non-terminated '\"'."));
1755 /* ??? TODO: handle other escape sequences */
1756 error (_("Unrecognized escape character \\%c in format string."),
1766 /* Skip over " and following space and comma. */
1769 while (*s
== ' ' || *s
== '\t')
1772 if (*s
!= ',' && *s
!= 0)
1773 error (_("Invalid argument syntax"));
1777 while (*s
== ' ' || *s
== '\t')
1780 /* Need extra space for the '\0's. Doubling the size is sufficient. */
1781 substrings
= alloca (strlen (string
) * 2);
1782 current_substring
= substrings
;
1785 /* Now scan the string for %-specs and see what kinds of args they want.
1786 argclass[I] classifies the %-specs so we can give printf_filtered
1787 something of the right size. */
1791 int_arg
, long_arg
, long_long_arg
, ptr_arg
, string_arg
,
1792 double_arg
, long_double_arg
, decfloat_arg
1794 enum argclass
*argclass
;
1795 enum argclass this_argclass
;
1800 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
1807 int seen_hash
= 0, seen_zero
= 0, lcount
= 0, seen_prec
= 0;
1808 int seen_space
= 0, seen_plus
= 0;
1809 int seen_big_l
= 0, seen_h
= 0, seen_big_h
= 0;
1810 int seen_big_d
= 0, seen_double_big_d
= 0;
1813 /* Check the validity of the format specifier, and work
1814 out what argument it expects. We only accept C89
1815 format strings, with the exception of long long (which
1816 we autoconf for). */
1818 /* Skip over "%%". */
1825 /* The first part of a format specifier is a set of flag
1827 while (strchr ("0-+ #", *f
))
1840 /* The next part of a format specifier is a width. */
1841 while (strchr ("0123456789", *f
))
1844 /* The next part of a format specifier is a precision. */
1849 while (strchr ("0123456789", *f
))
1853 /* The next part of a format specifier is a length modifier. */
1874 /* Decimal32 modifier. */
1880 /* Decimal64 and Decimal128 modifiers. */
1885 /* Check for a Decimal128. */
1889 seen_double_big_d
= 1;
1905 if (seen_space
|| seen_plus
)
1912 this_argclass
= int_arg
;
1913 else if (lcount
== 1)
1914 this_argclass
= long_arg
;
1916 this_argclass
= long_long_arg
;
1923 this_argclass
= int_arg
;
1924 if (lcount
|| seen_h
|| seen_big_l
)
1926 if (seen_prec
|| seen_zero
|| seen_space
|| seen_plus
)
1931 this_argclass
= ptr_arg
;
1932 if (lcount
|| seen_h
|| seen_big_l
)
1934 if (seen_prec
|| seen_zero
|| seen_space
|| seen_plus
)
1939 this_argclass
= string_arg
;
1940 if (lcount
|| seen_h
|| seen_big_l
)
1942 if (seen_zero
|| seen_space
|| seen_plus
)
1951 if (seen_big_h
|| seen_big_d
|| seen_double_big_d
)
1952 this_argclass
= decfloat_arg
;
1953 else if (seen_big_l
)
1954 this_argclass
= long_double_arg
;
1956 this_argclass
= double_arg
;
1958 if (lcount
|| seen_h
)
1963 error (_("`*' not supported for precision or width in printf"));
1966 error (_("Format specifier `n' not supported in printf"));
1969 error (_("Incomplete format specifier at end of format string"));
1972 error (_("Unrecognized format specifier '%c' in printf"), *f
);
1976 error (_("Inappropriate modifiers to format specifier '%c' in printf"),
1981 if (lcount
> 1 && USE_PRINTF_I64
)
1983 /* Windows' printf does support long long, but not the usual way.
1984 Convert %lld to %I64d. */
1985 int length_before_ll
= f
- last_arg
- 1 - lcount
;
1986 strncpy (current_substring
, last_arg
, length_before_ll
);
1987 strcpy (current_substring
+ length_before_ll
, "I64");
1988 current_substring
[length_before_ll
+ 3] =
1989 last_arg
[length_before_ll
+ lcount
];
1990 current_substring
+= length_before_ll
+ 4;
1994 strncpy (current_substring
, last_arg
, f
- last_arg
);
1995 current_substring
+= f
- last_arg
;
1997 *current_substring
++ = '\0';
1999 argclass
[nargs_wanted
++] = this_argclass
;
2002 /* Now, parse all arguments and evaluate them.
2003 Store the VALUEs in VAL_ARGS. */
2008 if (nargs
== allocated_args
)
2009 val_args
= (struct value
**) xrealloc ((char *) val_args
,
2010 (allocated_args
*= 2)
2011 * sizeof (struct value
*));
2013 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2021 if (nargs
!= nargs_wanted
)
2022 error (_("Wrong number of arguments for specified format-string"));
2024 /* Now actually print them. */
2025 current_substring
= substrings
;
2026 for (i
= 0; i
< nargs
; i
++)
2028 switch (argclass
[i
])
2035 tem
= value_as_address (val_args
[i
]);
2037 /* This is a %s argument. Find the length of the string. */
2042 read_memory (tem
+ j
, &c
, 1);
2047 /* Copy the string contents into a string inside GDB. */
2048 str
= (gdb_byte
*) alloca (j
+ 1);
2050 read_memory (tem
, str
, j
);
2053 printf_filtered (current_substring
, (char *) str
);
2058 struct type
*type
= value_type (val_args
[i
]);
2062 /* If format string wants a float, unchecked-convert the value
2063 to floating point of the same size. */
2064 type
= float_type_from_length (current_gdbarch
, type
);
2065 val
= unpack_double (type
, value_contents (val_args
[i
]), &inv
);
2067 error (_("Invalid floating value found in program."));
2069 printf_filtered (current_substring
, (double) val
);
2072 case long_double_arg
:
2073 #ifdef HAVE_LONG_DOUBLE
2075 struct type
*type
= value_type (val_args
[i
]);
2079 /* If format string wants a float, unchecked-convert the value
2080 to floating point of the same size. */
2081 type
= float_type_from_length (current_gdbarch
, type
);
2082 val
= unpack_double (type
, value_contents (val_args
[i
]), &inv
);
2084 error (_("Invalid floating value found in program."));
2086 printf_filtered (current_substring
, (long double) val
);
2090 error (_("long double not supported in printf"));
2093 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2095 long long val
= value_as_long (val_args
[i
]);
2096 printf_filtered (current_substring
, val
);
2100 error (_("long long not supported in printf"));
2104 int val
= value_as_long (val_args
[i
]);
2105 printf_filtered (current_substring
, val
);
2110 long val
= value_as_long (val_args
[i
]);
2111 printf_filtered (current_substring
, val
);
2115 /* Handles decimal floating values. */
2118 const gdb_byte
*param_ptr
= value_contents (val_args
[i
]);
2119 #if defined (PRINTF_HAS_DECFLOAT)
2120 /* If we have native support for Decimal floating
2121 printing, handle it here. */
2122 printf_filtered (current_substring
, param_ptr
);
2125 /* As a workaround until vasprintf has native support for DFP
2126 we convert the DFP values to string and print them using
2127 the %s format specifier. */
2130 int nnull_chars
= 0;
2132 /* Parameter data. */
2133 struct type
*param_type
= value_type (val_args
[i
]);
2134 unsigned int param_len
= TYPE_LENGTH (param_type
);
2136 /* DFP output data. */
2137 struct value
*dfp_value
= NULL
;
2141 struct type
*dfp_type
= NULL
;
2142 char decstr
[MAX_DECIMAL_STRING
];
2144 /* Points to the end of the string so that we can go back
2145 and check for DFP length modifiers. */
2146 eos
= current_substring
+ strlen (current_substring
);
2148 /* Look for the float/double format specifier. */
2149 while (*eos
!= 'f' && *eos
!= 'e' && *eos
!= 'E'
2150 && *eos
!= 'g' && *eos
!= 'G')
2155 /* Search for the '%' char and extract the size and type of
2156 the output decimal value based on its modifiers
2157 (%Hf, %Df, %DDf). */
2158 while (*--sos
!= '%')
2163 dfp_type
= builtin_type (current_gdbarch
)->builtin_decfloat
;
2165 else if (*sos
== 'D' && *(sos
- 1) == 'D')
2168 dfp_type
= builtin_type (current_gdbarch
)->builtin_declong
;
2174 dfp_type
= builtin_type (current_gdbarch
)->builtin_decdouble
;
2178 /* Replace %Hf, %Df and %DDf with %s's. */
2181 /* Go through the whole format string and pull the correct
2182 number of chars back to compensate for the change in the
2183 format specifier. */
2184 while (nnull_chars
< nargs
- i
)
2192 /* Conversion between different DFP types. */
2193 if (TYPE_CODE (param_type
) == TYPE_CODE_DECFLOAT
)
2194 decimal_convert (param_ptr
, param_len
, dec
, dfp_len
);
2196 /* If this is a non-trivial conversion, just output 0.
2197 A correct converted value can be displayed by explicitly
2198 casting to a DFP type. */
2199 decimal_from_string (dec
, dfp_len
, "0");
2201 dfp_value
= value_from_decfloat (dfp_type
, dec
);
2203 dfp_ptr
= (gdb_byte
*) value_contents (dfp_value
);
2205 decimal_to_string (dfp_ptr
, dfp_len
, decstr
);
2207 /* Print the DFP value. */
2208 printf_filtered (current_substring
, decstr
);
2216 /* We avoid the host's %p because pointers are too
2217 likely to be the wrong size. The only interesting
2218 modifier for %p is a width; extract that, and then
2219 handle %p as glibc would: %#x or a literal "(nil)". */
2221 char *p
, *fmt
, *fmt_p
;
2222 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2223 long long val
= value_as_long (val_args
[i
]);
2225 long val
= value_as_long (val_args
[i
]);
2228 fmt
= alloca (strlen (current_substring
) + 5);
2230 /* Copy up to the leading %. */
2231 p
= current_substring
;
2235 int is_percent
= (*p
== '%');
2249 /* Copy any width. */
2250 while (*p
>= '0' && *p
< '9')
2253 gdb_assert (*p
== 'p' && *(p
+ 1) == '\0');
2256 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2262 printf_filtered (fmt
, val
);
2268 printf_filtered (fmt
, "(nil)");
2274 internal_error (__FILE__
, __LINE__
,
2275 _("failed internal consistency check"));
2277 /* Skip to the next substring. */
2278 current_substring
+= strlen (current_substring
) + 1;
2280 /* Print the portion of the format string after the last argument. */
2281 puts_filtered (last_arg
);
2283 do_cleanups (old_cleanups
);
2287 _initialize_printcmd (void)
2289 struct cmd_list_element
*c
;
2291 current_display_number
= -1;
2293 add_info ("address", address_info
,
2294 _("Describe where symbol SYM is stored."));
2296 add_info ("symbol", sym_info
, _("\
2297 Describe what symbol is at location ADDR.\n\
2298 Only for symbols with fixed locations (global or static scope)."));
2300 add_com ("x", class_vars
, x_command
, _("\
2301 Examine memory: x/FMT ADDRESS.\n\
2302 ADDRESS is an expression for the memory address to examine.\n\
2303 FMT is a repeat count followed by a format letter and a size letter.\n\
2304 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2305 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n\
2306 Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2307 The specified number of objects of the specified size are printed\n\
2308 according to the format.\n\n\
2309 Defaults for format and size letters are those previously used.\n\
2310 Default count is 1. Default address is following last thing printed\n\
2311 with this command or \"print\"."));
2314 add_com ("whereis", class_vars
, whereis_command
,
2315 _("Print line number and file of definition of variable."));
2318 add_info ("display", display_info
, _("\
2319 Expressions to display when program stops, with code numbers."));
2321 add_cmd ("undisplay", class_vars
, undisplay_command
, _("\
2322 Cancel some expressions to be displayed when program stops.\n\
2323 Arguments are the code numbers of the expressions to stop displaying.\n\
2324 No argument means cancel all automatic-display expressions.\n\
2325 \"delete display\" has the same effect as this command.\n\
2326 Do \"info display\" to see current list of code numbers."),
2329 add_com ("display", class_vars
, display_command
, _("\
2330 Print value of expression EXP each time the program stops.\n\
2331 /FMT may be used before EXP as in the \"print\" command.\n\
2332 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2333 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2334 and examining is done as in the \"x\" command.\n\n\
2335 With no argument, display all currently requested auto-display expressions.\n\
2336 Use \"undisplay\" to cancel display requests previously made."));
2338 add_cmd ("display", class_vars
, enable_display
, _("\
2339 Enable some expressions to be displayed when program stops.\n\
2340 Arguments are the code numbers of the expressions to resume displaying.\n\
2341 No argument means enable all automatic-display expressions.\n\
2342 Do \"info display\" to see current list of code numbers."), &enablelist
);
2344 add_cmd ("display", class_vars
, disable_display_command
, _("\
2345 Disable some expressions to be displayed when program stops.\n\
2346 Arguments are the code numbers of the expressions to stop displaying.\n\
2347 No argument means disable all automatic-display expressions.\n\
2348 Do \"info display\" to see current list of code numbers."), &disablelist
);
2350 add_cmd ("display", class_vars
, undisplay_command
, _("\
2351 Cancel some expressions to be displayed when program stops.\n\
2352 Arguments are the code numbers of the expressions to stop displaying.\n\
2353 No argument means cancel all automatic-display expressions.\n\
2354 Do \"info display\" to see current list of code numbers."), &deletelist
);
2356 add_com ("printf", class_vars
, printf_command
, _("\
2357 printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2358 This is useful for formatted output in user-defined commands."));
2360 add_com ("output", class_vars
, output_command
, _("\
2361 Like \"print\" but don't put in value history and don't print newline.\n\
2362 This is useful in user-defined commands."));
2364 add_prefix_cmd ("set", class_vars
, set_command
, _("\
2365 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2366 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2367 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2368 with $), a register (a few standard names starting with $), or an actual\n\
2369 variable in the program being debugged. EXP is any valid expression.\n\
2370 Use \"set variable\" for variables with names identical to set subcommands.\n\
2372 With a subcommand, this command modifies parts of the gdb environment.\n\
2373 You can see these environment settings with the \"show\" command."),
2374 &setlist
, "set ", 1, &cmdlist
);
2376 add_com ("assign", class_vars
, set_command
, _("\
2377 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2378 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2379 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2380 with $), a register (a few standard names starting with $), or an actual\n\
2381 variable in the program being debugged. EXP is any valid expression.\n\
2382 Use \"set variable\" for variables with names identical to set subcommands.\n\
2383 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2384 You can see these environment settings with the \"show\" command."));
2386 /* "call" is the same as "set", but handy for dbx users to call fns. */
2387 c
= add_com ("call", class_vars
, call_command
, _("\
2388 Call a function in the program.\n\
2389 The argument is the function name and arguments, in the notation of the\n\
2390 current working language. The result is printed and saved in the value\n\
2391 history, if it is not void."));
2392 set_cmd_completer (c
, expression_completer
);
2394 add_cmd ("variable", class_vars
, set_command
, _("\
2395 Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2396 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2397 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2398 with $), a register (a few standard names starting with $), or an actual\n\
2399 variable in the program being debugged. EXP is any valid expression.\n\
2400 This may usually be abbreviated to simply \"set\"."),
2403 c
= add_com ("print", class_vars
, print_command
, _("\
2404 Print value of expression EXP.\n\
2405 Variables accessible are those of the lexical environment of the selected\n\
2406 stack frame, plus all those whose scope is global or an entire file.\n\
2408 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2409 $$NUM refers to NUM'th value back from the last one.\n\
2410 Names starting with $ refer to registers (with the values they would have\n\
2411 if the program were to return to the stack frame now selected, restoring\n\
2412 all registers saved by frames farther in) or else to debugger\n\
2413 \"convenience\" variables (any such name not a known register).\n\
2414 Use assignment expressions to give values to convenience variables.\n\
2416 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2417 @ is a binary operator for treating consecutive data objects\n\
2418 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2419 element is FOO, whose second element is stored in the space following\n\
2420 where FOO is stored, etc. FOO must be an expression whose value\n\
2421 resides in memory.\n\
2423 EXP may be preceded with /FMT, where FMT is a format letter\n\
2424 but no count or size letter (see \"x\" command)."));
2425 set_cmd_completer (c
, expression_completer
);
2426 add_com_alias ("p", "print", class_vars
, 1);
2428 c
= add_com ("inspect", class_vars
, inspect_command
, _("\
2429 Same as \"print\" command, except that if you are running in the epoch\n\
2430 environment, the value is printed in its own window."));
2431 set_cmd_completer (c
, expression_completer
);
2433 add_setshow_uinteger_cmd ("max-symbolic-offset", no_class
,
2434 &max_symbolic_offset
, _("\
2435 Set the largest offset that will be printed in <symbol+1234> form."), _("\
2436 Show the largest offset that will be printed in <symbol+1234> form."), NULL
,
2438 show_max_symbolic_offset
,
2439 &setprintlist
, &showprintlist
);
2440 add_setshow_boolean_cmd ("symbol-filename", no_class
,
2441 &print_symbol_filename
, _("\
2442 Set printing of source filename and line number with <symbol>."), _("\
2443 Show printing of source filename and line number with <symbol>."), NULL
,
2445 show_print_symbol_filename
,
2446 &setprintlist
, &showprintlist
);
2448 /* For examine/instruction a single byte quantity is specified as
2449 the data. This avoids problems with value_at_lazy() requiring a
2450 valid data type (and rejecting VOID). */
2451 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2453 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2454 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2455 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2456 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);