1 /* Print values for GNU debugger GDB.
2 Copyright 1986-1991, 1993-1995, 1998, 2000 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
22 #include "gdb_string.h"
28 #include "expression.h"
32 #include "breakpoint.h"
36 #include "symfile.h" /* for overlay functions */
37 #include "objfiles.h" /* ditto */
42 extern int asm_demangle
; /* Whether to demangle syms in asm printouts */
43 extern int addressprint
; /* Whether to print hex addresses in HLL " */
52 /* Last specified output format. */
54 static char last_format
= 'x';
56 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
58 static char last_size
= 'w';
60 /* Default address to examine next. */
62 static CORE_ADDR next_address
;
64 /* Default section to examine next. */
66 static asection
*next_section
;
68 /* Last address examined. */
70 static CORE_ADDR last_examine_address
;
72 /* Contents of last address examined.
73 This is not valid past the end of the `x' command! */
75 static value_ptr last_examine_value
;
77 /* Largest offset between a symbolic value and an address, that will be
78 printed as `0x1234 <symbol+offset>'. */
80 static unsigned int max_symbolic_offset
= UINT_MAX
;
82 /* Append the source filename and linenumber of the symbol when
83 printing a symbolic value as `<symbol at filename:linenum>' if set. */
84 static int print_symbol_filename
= 0;
86 /* Number of auto-display expression currently being displayed.
87 So that we can disable it if we get an error or a signal within it.
88 -1 when not doing one. */
90 int current_display_number
;
92 /* Flag to low-level print routines that this value is being printed
93 in an epoch window. We'd like to pass this as a parameter, but
94 every routine would need to take it. Perhaps we can encapsulate
95 this in the I/O stream once we have GNU stdio. */
101 /* Chain link to next auto-display item. */
102 struct display
*next
;
103 /* Expression to be evaluated and displayed. */
104 struct expression
*exp
;
105 /* Item number of this auto-display item. */
107 /* Display format specified. */
108 struct format_data format
;
109 /* Innermost block required by this expression when evaluated */
111 /* Status of this display (enabled or disabled) */
115 /* Chain of expressions whose values should be displayed
116 automatically each time the program stops. */
118 static struct display
*display_chain
;
120 static int display_number
;
122 /* Prototypes for exported functions. */
124 void output_command
PARAMS ((char *, int));
126 void _initialize_printcmd
PARAMS ((void));
128 /* Prototypes for local functions. */
130 static void delete_display
PARAMS ((int));
132 static void enable_display
PARAMS ((char *, int));
134 static void disable_display_command
PARAMS ((char *, int));
136 static void disassemble_command
PARAMS ((char *, int));
138 static void printf_command
PARAMS ((char *, int));
140 static void print_frame_nameless_args (struct frame_info
*, long,
141 int, int, struct ui_file
*);
143 static void display_info
PARAMS ((char *, int));
145 static void do_one_display
PARAMS ((struct display
*));
147 static void undisplay_command
PARAMS ((char *, int));
149 static void free_display
PARAMS ((struct display
*));
151 static void display_command
PARAMS ((char *, int));
153 void x_command
PARAMS ((char *, int));
155 static void address_info
PARAMS ((char *, int));
157 static void set_command
PARAMS ((char *, int));
159 static void call_command
PARAMS ((char *, int));
161 static void inspect_command
PARAMS ((char *, int));
163 static void print_command
PARAMS ((char *, int));
165 static void print_command_1
PARAMS ((char *, int, int));
167 static void validate_format
PARAMS ((struct format_data
, char *));
169 static void do_examine
PARAMS ((struct format_data
, CORE_ADDR addr
, asection
* section
));
171 static void print_formatted (value_ptr
, int, int, struct ui_file
*);
173 static struct format_data decode_format
PARAMS ((char **, int, int));
175 static int print_insn (CORE_ADDR
, struct ui_file
*);
177 static void sym_info
PARAMS ((char *, int));
180 /* Decode a format specification. *STRING_PTR should point to it.
181 OFORMAT and OSIZE are used as defaults for the format and size
182 if none are given in the format specification.
183 If OSIZE is zero, then the size field of the returned value
184 should be set only if a size is explicitly specified by the
186 The structure returned describes all the data
187 found in the specification. In addition, *STRING_PTR is advanced
188 past the specification and past all whitespace following it. */
190 static struct format_data
191 decode_format (string_ptr
, oformat
, osize
)
196 struct format_data val
;
197 register char *p
= *string_ptr
;
203 if (*p
>= '0' && *p
<= '9')
204 val
.count
= atoi (p
);
205 while (*p
>= '0' && *p
<= '9')
208 /* Now process size or format letters that follow. */
212 if (*p
== 'b' || *p
== 'h' || *p
== 'w' || *p
== 'g')
214 else if (*p
>= 'a' && *p
<= 'z')
220 while (*p
== ' ' || *p
== '\t')
224 /* Set defaults for format and size if not specified. */
225 if (val
.format
== '?')
229 /* Neither has been specified. */
230 val
.format
= oformat
;
234 /* If a size is specified, any format makes a reasonable
235 default except 'i'. */
236 val
.format
= oformat
== 'i' ? 'x' : oformat
;
238 else if (val
.size
== '?')
243 /* Pick the appropriate size for an address. */
244 if (TARGET_PTR_BIT
== 64)
245 val
.size
= osize
? 'g' : osize
;
246 else if (TARGET_PTR_BIT
== 32)
247 val
.size
= osize
? 'w' : osize
;
248 else if (TARGET_PTR_BIT
== 16)
249 val
.size
= osize
? 'h' : osize
;
251 /* Bad value for TARGET_PTR_BIT */
255 /* Floating point has to be word or giantword. */
256 if (osize
== 'w' || osize
== 'g')
259 /* Default it to giantword if the last used size is not
261 val
.size
= osize
? 'g' : osize
;
264 /* Characters default to one byte. */
265 val
.size
= osize
? 'b' : osize
;
268 /* The default is the size most recently specified. */
275 /* Print value VAL on stream according to FORMAT, a letter or 0.
276 Do not end with a newline.
277 0 means print VAL according to its own type.
278 SIZE is the letter for the size of datum being printed.
279 This is used to pad hex numbers so they line up. */
282 print_formatted (val
, format
, size
, stream
)
283 register value_ptr val
;
286 struct ui_file
*stream
;
288 struct type
*type
= check_typedef (VALUE_TYPE (val
));
289 int len
= TYPE_LENGTH (type
);
291 if (VALUE_LVAL (val
) == lval_memory
)
293 next_address
= VALUE_ADDRESS (val
) + len
;
294 next_section
= VALUE_BFD_SECTION (val
);
300 /* FIXME: Need to handle wchar_t's here... */
301 next_address
= VALUE_ADDRESS (val
)
302 + val_print_string (VALUE_ADDRESS (val
), -1, 1, stream
);
303 next_section
= VALUE_BFD_SECTION (val
);
307 /* The old comment says
308 "Force output out, print_insn not using _filtered".
309 I'm not completely sure what that means, I suspect most print_insn
310 now do use _filtered, so I guess it's obsolete.
311 --Yes, it does filter now, and so this is obsolete. -JB */
313 /* We often wrap here if there are long symbolic names. */
315 next_address
= VALUE_ADDRESS (val
)
316 + print_insn (VALUE_ADDRESS (val
), stream
);
317 next_section
= VALUE_BFD_SECTION (val
);
322 || TYPE_CODE (type
) == TYPE_CODE_ARRAY
323 || TYPE_CODE (type
) == TYPE_CODE_STRING
324 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
325 || TYPE_CODE (type
) == TYPE_CODE_UNION
)
326 /* If format is 0, use the 'natural' format for
327 * that type of value. If the type is non-scalar,
328 * we have to use language rules to print it as
329 * a series of scalars.
331 value_print (val
, stream
, format
, Val_pretty_default
);
333 /* User specified format, so don't look to the
334 * the type to tell us what to do.
336 print_scalar_formatted (VALUE_CONTENTS (val
), type
,
337 format
, size
, stream
);
341 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
342 according to letters FORMAT and SIZE on STREAM.
343 FORMAT may not be zero. Formats s and i are not supported at this level.
345 This is how the elements of an array or structure are printed
349 print_scalar_formatted (valaddr
, type
, format
, size
, stream
)
354 struct ui_file
*stream
;
357 unsigned int len
= TYPE_LENGTH (type
);
359 if (len
> sizeof (LONGEST
)
367 if (!TYPE_UNSIGNED (type
)
368 || !extract_long_unsigned_integer (valaddr
, len
, &val_long
))
370 /* We can't print it normally, but we can print it in hex.
371 Printing it in the wrong radix is more useful than saying
372 "use /x, you dummy". */
373 /* FIXME: we could also do octal or binary if that was the
375 /* FIXME: we should be using the size field to give us a
376 minimum field width to print. */
379 print_octal_chars (stream
, valaddr
, len
);
380 else if (format
== 'd')
381 print_decimal_chars (stream
, valaddr
, len
);
382 else if (format
== 't')
383 print_binary_chars (stream
, valaddr
, len
);
385 /* replace with call to print_hex_chars? Looks
386 like val_print_type_code_int is redoing
389 val_print_type_code_int (type
, valaddr
, stream
);
394 /* If we get here, extract_long_unsigned_integer set val_long. */
396 else if (format
!= 'f')
397 val_long
= unpack_long (type
, valaddr
);
399 /* If we are printing it as unsigned, truncate it in case it is actually
400 a negative signed value (e.g. "print/u (short)-1" should print 65535
401 (if shorts are 16 bits) instead of 4294967295). */
404 if (len
< sizeof (LONGEST
))
405 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
413 /* no size specified, like in print. Print varying # of digits. */
414 print_longest (stream
, 'x', 1, val_long
);
423 print_longest (stream
, size
, 1, val_long
);
426 error ("Undefined output size \"%c\".", size
);
431 print_longest (stream
, 'd', 1, val_long
);
435 print_longest (stream
, 'u', 0, val_long
);
440 print_longest (stream
, 'o', 1, val_long
);
442 fprintf_filtered (stream
, "0");
447 /* Truncate address to the size of a target pointer, avoiding
448 shifts larger or equal than the width of a CORE_ADDR. The
449 local variable PTR_BIT stops the compiler reporting a shift
450 overflow when it won't occure. */
451 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
452 int ptr_bit
= TARGET_PTR_BIT
;
453 if (ptr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
454 addr
&= ((CORE_ADDR
) 1 << ptr_bit
) - 1;
455 print_address (addr
, stream
);
460 value_print (value_from_longest (builtin_type_true_char
, val_long
),
461 stream
, 0, Val_pretty_default
);
465 if (len
== sizeof (float))
466 type
= builtin_type_float
;
467 else if (len
== sizeof (double))
468 type
= builtin_type_double
;
469 print_floating (valaddr
, type
, stream
);
476 /* Binary; 't' stands for "two". */
478 char bits
[8 * (sizeof val_long
) + 1];
479 char buf
[8 * (sizeof val_long
) + 32];
484 width
= 8 * (sizeof val_long
);
501 error ("Undefined output size \"%c\".", size
);
507 bits
[width
] = (val_long
& 1) ? '1' : '0';
512 while (*cp
&& *cp
== '0')
517 strcpy (buf
, local_binary_format_prefix ());
519 strcat (buf
, local_binary_format_suffix ());
520 fprintf_filtered (stream
, buf
);
525 error ("Undefined output format \"%c\".", format
);
529 /* Specify default address for `x' command.
530 `info lines' uses this. */
533 set_next_address (addr
)
538 /* Make address available to the user as $_. */
539 set_internalvar (lookup_internalvar ("_"),
540 value_from_pointer (lookup_pointer_type (builtin_type_void
),
544 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
545 after LEADIN. Print nothing if no symbolic name is found nearby.
546 Optionally also print source file and line number, if available.
547 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
548 or to interpret it as a possible C++ name and convert it back to source
549 form. However note that DO_DEMANGLE can be overridden by the specific
550 settings of the demangle and asm_demangle variables. */
553 print_address_symbolic (addr
, stream
, do_demangle
, leadin
)
555 struct ui_file
*stream
;
560 char *filename
= NULL
;
565 /* throw away both name and filename */
566 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
567 make_cleanup (free_current_contents
, &filename
);
569 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
, &filename
, &line
, &unmapped
))
571 do_cleanups (cleanup_chain
);
575 fputs_filtered (leadin
, stream
);
577 fputs_filtered ("<*", stream
);
579 fputs_filtered ("<", stream
);
580 fputs_filtered (name
, stream
);
582 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
584 /* Append source filename and line number if desired. Give specific
585 line # of this addr, if we have it; else line # of the nearest symbol. */
586 if (print_symbol_filename
&& filename
!= NULL
)
589 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
591 fprintf_filtered (stream
, " in %s", filename
);
594 fputs_filtered ("*>", stream
);
596 fputs_filtered (">", stream
);
598 do_cleanups (cleanup_chain
);
601 /* Given an address ADDR return all the elements needed to print the
602 address in a symbolic form. NAME can be mangled or not depending
603 on DO_DEMANGLE (and also on the asm_demangle global variable,
604 manipulated via ''set print asm-demangle''). Return 0 in case of
605 success, when all the info in the OUT paramters is valid. Return 1
608 build_address_symbolic (CORE_ADDR addr
, /* IN */
609 int do_demangle
, /* IN */
610 char **name
, /* OUT */
611 int *offset
, /* OUT */
612 char **filename
, /* OUT */
614 int *unmapped
) /* OUT */
616 struct minimal_symbol
*msymbol
;
617 struct symbol
*symbol
;
618 struct symtab
*symtab
= 0;
619 CORE_ADDR name_location
= 0;
620 asection
*section
= 0;
621 char *name_temp
= "";
623 /* Let's say it is unmapped. */
626 /* Determine if the address is in an overlay, and whether it is
628 if (overlay_debugging
)
630 section
= find_pc_overlay (addr
);
631 if (pc_in_unmapped_range (addr
, section
))
634 addr
= overlay_mapped_address (addr
, section
);
638 /* On some targets, add in extra "flag" bits to PC for
639 disassembly. This should ensure that "rounding errors" in
640 symbol addresses that are masked for disassembly favour the
641 the correct symbol. */
643 #ifdef GDB_TARGET_UNMASK_DISAS_PC
644 addr
= GDB_TARGET_UNMASK_DISAS_PC (addr
);
647 /* First try to find the address in the symbol table, then
648 in the minsyms. Take the closest one. */
650 /* This is defective in the sense that it only finds text symbols. So
651 really this is kind of pointless--we should make sure that the
652 minimal symbols have everything we need (by changing that we could
653 save some memory, but for many debug format--ELF/DWARF or
654 anything/stabs--it would be inconvenient to eliminate those minimal
656 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
657 symbol
= find_pc_sect_function (addr
, section
);
661 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
663 name_temp
= SYMBOL_SOURCE_NAME (symbol
);
665 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
670 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
672 /* The msymbol is closer to the address than the symbol;
673 use the msymbol instead. */
676 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
678 name_temp
= SYMBOL_SOURCE_NAME (msymbol
);
680 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
683 if (symbol
== NULL
&& msymbol
== NULL
)
686 /* On some targets, mask out extra "flag" bits from PC for handsome
689 #ifdef GDB_TARGET_MASK_DISAS_PC
690 name_location
= GDB_TARGET_MASK_DISAS_PC (name_location
);
691 addr
= GDB_TARGET_MASK_DISAS_PC (addr
);
694 /* If the nearest symbol is too far away, don't print anything symbolic. */
696 /* For when CORE_ADDR is larger than unsigned int, we do math in
697 CORE_ADDR. But when we detect unsigned wraparound in the
698 CORE_ADDR math, we ignore this test and print the offset,
699 because addr+max_symbolic_offset has wrapped through the end
700 of the address space back to the beginning, giving bogus comparison. */
701 if (addr
> name_location
+ max_symbolic_offset
702 && name_location
+ max_symbolic_offset
> name_location
)
705 *offset
= addr
- name_location
;
707 *name
= xstrdup (name_temp
);
709 if (print_symbol_filename
)
711 struct symtab_and_line sal
;
713 sal
= find_pc_sect_line (addr
, section
, 0);
717 *filename
= xstrdup (sal
.symtab
->filename
);
720 else if (symtab
&& symbol
&& symbol
->line
)
722 *filename
= xstrdup (symtab
->filename
);
723 *line
= symbol
->line
;
727 *filename
= xstrdup (symtab
->filename
);
734 /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
737 print_address_numeric (addr
, use_local
, stream
)
740 struct ui_file
*stream
;
742 /* This assumes a CORE_ADDR can fit in a LONGEST. Probably a safe
744 print_longest (stream
, 'x', use_local
, (ULONGEST
) addr
);
747 /* Print address ADDR symbolically on STREAM.
748 First print it as a number. Then perhaps print
749 <SYMBOL + OFFSET> after the number. */
752 print_address (addr
, stream
)
754 struct ui_file
*stream
;
756 print_address_numeric (addr
, 1, stream
);
757 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
760 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
761 controls whether to print the symbolic name "raw" or demangled.
762 Global setting "addressprint" controls whether to print hex address
766 print_address_demangle (addr
, stream
, do_demangle
)
768 struct ui_file
*stream
;
773 fprintf_filtered (stream
, "0");
775 else if (addressprint
)
777 print_address_numeric (addr
, 1, stream
);
778 print_address_symbolic (addr
, stream
, do_demangle
, " ");
782 print_address_symbolic (addr
, stream
, do_demangle
, "");
787 /* These are the types that $__ will get after an examine command of one
790 static struct type
*examine_i_type
;
792 static struct type
*examine_b_type
;
793 static struct type
*examine_h_type
;
794 static struct type
*examine_w_type
;
795 static struct type
*examine_g_type
;
797 /* Examine data at address ADDR in format FMT.
798 Fetch it from memory and print on gdb_stdout. */
801 do_examine (fmt
, addr
, sect
)
802 struct format_data fmt
;
806 register char format
= 0;
808 register int count
= 1;
809 struct type
*val_type
= NULL
;
811 register int maxelts
;
819 /* String or instruction format implies fetch single bytes
820 regardless of the specified size. */
821 if (format
== 's' || format
== 'i')
825 val_type
= examine_i_type
;
826 else if (size
== 'b')
827 val_type
= examine_b_type
;
828 else if (size
== 'h')
829 val_type
= examine_h_type
;
830 else if (size
== 'w')
831 val_type
= examine_w_type
;
832 else if (size
== 'g')
833 val_type
= examine_g_type
;
840 if (format
== 's' || format
== 'i')
843 /* Print as many objects as specified in COUNT, at most maxelts per line,
844 with the address of the next one at the start of each line. */
849 print_address (next_address
, gdb_stdout
);
850 printf_filtered (":");
855 printf_filtered ("\t");
856 /* Note that print_formatted sets next_address for the next
858 last_examine_address
= next_address
;
860 if (last_examine_value
)
861 value_free (last_examine_value
);
863 /* The value to be displayed is not fetched greedily.
864 Instead, to avoid the posibility of a fetched value not
865 being used, its retreval is delayed until the print code
866 uses it. When examining an instruction stream, the
867 disassembler will perform its own memory fetch using just
868 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
869 the disassembler be modified so that LAST_EXAMINE_VALUE
870 is left with the byte sequence from the last complete
871 instruction fetched from memory? */
872 last_examine_value
= value_at_lazy (val_type
, next_address
, sect
);
874 if (last_examine_value
)
875 release_value (last_examine_value
);
877 print_formatted (last_examine_value
, format
, size
, gdb_stdout
);
879 printf_filtered ("\n");
880 gdb_flush (gdb_stdout
);
885 validate_format (fmt
, cmdname
)
886 struct format_data fmt
;
890 error ("Size letters are meaningless in \"%s\" command.", cmdname
);
892 error ("Item count other than 1 is meaningless in \"%s\" command.",
894 if (fmt
.format
== 'i' || fmt
.format
== 's')
895 error ("Format letter \"%c\" is meaningless in \"%s\" command.",
896 fmt
.format
, cmdname
);
899 /* Evaluate string EXP as an expression in the current language and
900 print the resulting value. EXP may contain a format specifier as the
901 first argument ("/x myvar" for example, to print myvar in hex).
905 print_command_1 (exp
, inspect
, voidprint
)
910 struct expression
*expr
;
911 register struct cleanup
*old_chain
= 0;
912 register char format
= 0;
913 register value_ptr val
;
914 struct format_data fmt
;
917 /* Pass inspect flag to the rest of the print routines in a global (sigh). */
918 inspect_it
= inspect
;
920 if (exp
&& *exp
== '/')
923 fmt
= decode_format (&exp
, last_format
, 0);
924 validate_format (fmt
, "print");
925 last_format
= format
= fmt
.format
;
937 expr
= parse_expression (exp
);
938 old_chain
= make_cleanup (free_current_contents
, &expr
);
940 val
= evaluate_expression (expr
);
942 /* C++: figure out what type we actually want to print it as. */
943 type
= VALUE_TYPE (val
);
946 && (TYPE_CODE (type
) == TYPE_CODE_PTR
947 || TYPE_CODE (type
) == TYPE_CODE_REF
)
948 && (TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_STRUCT
949 || TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_UNION
))
953 v
= value_from_vtable_info (val
, TYPE_TARGET_TYPE (type
));
957 type
= VALUE_TYPE (val
);
962 val
= access_value_history (0);
964 if (voidprint
|| (val
&& VALUE_TYPE (val
) &&
965 TYPE_CODE (VALUE_TYPE (val
)) != TYPE_CODE_VOID
))
967 int histindex
= record_latest_value (val
);
970 annotate_value_history_begin (histindex
, VALUE_TYPE (val
));
972 annotate_value_begin (VALUE_TYPE (val
));
975 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp
, histindex
);
976 else if (histindex
>= 0)
977 printf_filtered ("$%d = ", histindex
);
980 annotate_value_history_value ();
982 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
983 printf_filtered ("\n");
986 annotate_value_history_end ();
988 annotate_value_end ();
991 printf_unfiltered ("\") )\030");
995 do_cleanups (old_chain
);
996 inspect_it
= 0; /* Reset print routines to normal */
1001 print_command (exp
, from_tty
)
1005 print_command_1 (exp
, 0, 1);
1008 /* Same as print, except in epoch, it gets its own window */
1011 inspect_command (exp
, from_tty
)
1015 extern int epoch_interface
;
1017 print_command_1 (exp
, epoch_interface
, 1);
1020 /* Same as print, except it doesn't print void results. */
1023 call_command (exp
, from_tty
)
1027 print_command_1 (exp
, 0, 0);
1032 output_command (exp
, from_tty
)
1036 struct expression
*expr
;
1037 register struct cleanup
*old_chain
;
1038 register char format
= 0;
1039 register value_ptr val
;
1040 struct format_data fmt
;
1042 if (exp
&& *exp
== '/')
1045 fmt
= decode_format (&exp
, 0, 0);
1046 validate_format (fmt
, "output");
1047 format
= fmt
.format
;
1050 expr
= parse_expression (exp
);
1051 old_chain
= make_cleanup (free_current_contents
, &expr
);
1053 val
= evaluate_expression (expr
);
1055 annotate_value_begin (VALUE_TYPE (val
));
1057 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
1059 annotate_value_end ();
1062 gdb_flush (gdb_stdout
);
1064 do_cleanups (old_chain
);
1069 set_command (exp
, from_tty
)
1073 struct expression
*expr
= parse_expression (exp
);
1074 register struct cleanup
*old_chain
=
1075 make_cleanup (free_current_contents
, &expr
);
1076 evaluate_expression (expr
);
1077 do_cleanups (old_chain
);
1082 sym_info (arg
, from_tty
)
1086 struct minimal_symbol
*msymbol
;
1087 struct objfile
*objfile
;
1088 struct obj_section
*osect
;
1090 CORE_ADDR addr
, sect_addr
;
1092 unsigned int offset
;
1095 error_no_arg ("address");
1097 addr
= parse_and_eval_address (arg
);
1098 ALL_OBJSECTIONS (objfile
, osect
)
1100 sect
= osect
->the_bfd_section
;
1101 sect_addr
= overlay_mapped_address (addr
, sect
);
1103 if (osect
->addr
<= sect_addr
&& sect_addr
< osect
->endaddr
&&
1104 (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, sect
)))
1107 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1109 printf_filtered ("%s + %u in ",
1110 SYMBOL_SOURCE_NAME (msymbol
), offset
);
1112 printf_filtered ("%s in ",
1113 SYMBOL_SOURCE_NAME (msymbol
));
1114 if (pc_in_unmapped_range (addr
, sect
))
1115 printf_filtered ("load address range of ");
1116 if (section_is_overlay (sect
))
1117 printf_filtered ("%s overlay ",
1118 section_is_mapped (sect
) ? "mapped" : "unmapped");
1119 printf_filtered ("section %s", sect
->name
);
1120 printf_filtered ("\n");
1124 printf_filtered ("No symbol matches %s.\n", arg
);
1129 address_info (exp
, from_tty
)
1133 register struct symbol
*sym
;
1134 register struct minimal_symbol
*msymbol
;
1136 register long basereg
;
1138 CORE_ADDR load_addr
;
1139 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1140 if exp is a field of `this'. */
1143 error ("Argument required.");
1145 sym
= lookup_symbol (exp
, get_selected_block (), VAR_NAMESPACE
,
1146 &is_a_field_of_this
, (struct symtab
**) NULL
);
1149 if (is_a_field_of_this
)
1151 printf_filtered ("Symbol \"");
1152 fprintf_symbol_filtered (gdb_stdout
, exp
,
1153 current_language
->la_language
, DMGL_ANSI
);
1154 printf_filtered ("\" is a field of the local class variable `this'\n");
1158 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1160 if (msymbol
!= NULL
)
1162 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1164 printf_filtered ("Symbol \"");
1165 fprintf_symbol_filtered (gdb_stdout
, exp
,
1166 current_language
->la_language
, DMGL_ANSI
);
1167 printf_filtered ("\" is at ");
1168 print_address_numeric (load_addr
, 1, gdb_stdout
);
1169 printf_filtered (" in a file compiled without debugging");
1170 section
= SYMBOL_BFD_SECTION (msymbol
);
1171 if (section_is_overlay (section
))
1173 load_addr
= overlay_unmapped_address (load_addr
, section
);
1174 printf_filtered (",\n -- loaded at ");
1175 print_address_numeric (load_addr
, 1, gdb_stdout
);
1176 printf_filtered (" in overlay section %s", section
->name
);
1178 printf_filtered (".\n");
1181 error ("No symbol \"%s\" in current context.", exp
);
1185 printf_filtered ("Symbol \"");
1186 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_NAME (sym
),
1187 current_language
->la_language
, DMGL_ANSI
);
1188 printf_filtered ("\" is ");
1189 val
= SYMBOL_VALUE (sym
);
1190 basereg
= SYMBOL_BASEREG (sym
);
1191 section
= SYMBOL_BFD_SECTION (sym
);
1193 switch (SYMBOL_CLASS (sym
))
1196 case LOC_CONST_BYTES
:
1197 printf_filtered ("constant");
1201 printf_filtered ("a label at address ");
1202 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1204 if (section_is_overlay (section
))
1206 load_addr
= overlay_unmapped_address (load_addr
, section
);
1207 printf_filtered (",\n -- loaded at ");
1208 print_address_numeric (load_addr
, 1, gdb_stdout
);
1209 printf_filtered (" in overlay section %s", section
->name
);
1214 printf_filtered ("a variable in register %s", REGISTER_NAME (val
));
1218 printf_filtered ("static storage at address ");
1219 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1221 if (section_is_overlay (section
))
1223 load_addr
= overlay_unmapped_address (load_addr
, section
);
1224 printf_filtered (",\n -- loaded at ");
1225 print_address_numeric (load_addr
, 1, gdb_stdout
);
1226 printf_filtered (" in overlay section %s", section
->name
);
1231 printf_filtered ("external global (indirect addressing), at address *(");
1232 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1234 printf_filtered (")");
1235 if (section_is_overlay (section
))
1237 load_addr
= overlay_unmapped_address (load_addr
, section
);
1238 printf_filtered (",\n -- loaded at ");
1239 print_address_numeric (load_addr
, 1, gdb_stdout
);
1240 printf_filtered (" in overlay section %s", section
->name
);
1245 printf_filtered ("an argument in register %s", REGISTER_NAME (val
));
1248 case LOC_REGPARM_ADDR
:
1249 printf_filtered ("address of an argument in register %s", REGISTER_NAME (val
));
1253 printf_filtered ("an argument at offset %ld", val
);
1257 printf_filtered ("an argument at frame offset %ld", val
);
1261 printf_filtered ("a local variable at frame offset %ld", val
);
1265 printf_filtered ("a reference argument at offset %ld", val
);
1269 printf_filtered ("a variable at offset %ld from register %s",
1270 val
, REGISTER_NAME (basereg
));
1273 case LOC_BASEREG_ARG
:
1274 printf_filtered ("an argument at offset %ld from register %s",
1275 val
, REGISTER_NAME (basereg
));
1279 printf_filtered ("a typedef");
1283 printf_filtered ("a function at address ");
1284 #ifdef GDB_TARGET_MASK_DISAS_PC
1285 print_address_numeric
1286 (load_addr
= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))),
1289 print_address_numeric (load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
1292 if (section_is_overlay (section
))
1294 load_addr
= overlay_unmapped_address (load_addr
, section
);
1295 printf_filtered (",\n -- loaded at ");
1296 print_address_numeric (load_addr
, 1, gdb_stdout
);
1297 printf_filtered (" in overlay section %s", section
->name
);
1301 case LOC_UNRESOLVED
:
1303 struct minimal_symbol
*msym
;
1305 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, NULL
);
1307 printf_filtered ("unresolved");
1310 section
= SYMBOL_BFD_SECTION (msym
);
1311 printf_filtered ("static storage at address ");
1312 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (msym
),
1314 if (section_is_overlay (section
))
1316 load_addr
= overlay_unmapped_address (load_addr
, section
);
1317 printf_filtered (",\n -- loaded at ");
1318 print_address_numeric (load_addr
, 1, gdb_stdout
);
1319 printf_filtered (" in overlay section %s", section
->name
);
1325 case LOC_THREAD_LOCAL_STATIC
:
1327 "a thread-local variable at offset %ld from the thread base register %s",
1328 val
, REGISTER_NAME (basereg
));
1331 case LOC_OPTIMIZED_OUT
:
1332 printf_filtered ("optimized out");
1336 printf_filtered ("of unknown (botched) type");
1339 printf_filtered (".\n");
1343 x_command (exp
, from_tty
)
1347 struct expression
*expr
;
1348 struct format_data fmt
;
1349 struct cleanup
*old_chain
;
1352 fmt
.format
= last_format
;
1353 fmt
.size
= last_size
;
1356 if (exp
&& *exp
== '/')
1359 fmt
= decode_format (&exp
, last_format
, last_size
);
1362 /* If we have an expression, evaluate it and use it as the address. */
1364 if (exp
!= 0 && *exp
!= 0)
1366 expr
= parse_expression (exp
);
1367 /* Cause expression not to be there any more
1368 if this command is repeated with Newline.
1369 But don't clobber a user-defined command's definition. */
1372 old_chain
= make_cleanup (free_current_contents
, &expr
);
1373 val
= evaluate_expression (expr
);
1374 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_REF
)
1375 val
= value_ind (val
);
1376 /* In rvalue contexts, such as this, functions are coerced into
1377 pointers to functions. This makes "x/i main" work. */
1378 if ( /* last_format == 'i'
1379 && */ TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_FUNC
1380 && VALUE_LVAL (val
) == lval_memory
)
1381 next_address
= VALUE_ADDRESS (val
);
1383 next_address
= value_as_pointer (val
);
1384 if (VALUE_BFD_SECTION (val
))
1385 next_section
= VALUE_BFD_SECTION (val
);
1386 do_cleanups (old_chain
);
1389 do_examine (fmt
, next_address
, next_section
);
1391 /* If the examine succeeds, we remember its size and format for next time. */
1392 last_size
= fmt
.size
;
1393 last_format
= fmt
.format
;
1395 /* Set a couple of internal variables if appropriate. */
1396 if (last_examine_value
)
1398 /* Make last address examined available to the user as $_. Use
1399 the correct pointer type. */
1400 struct type
*pointer_type
1401 = lookup_pointer_type (VALUE_TYPE (last_examine_value
));
1402 set_internalvar (lookup_internalvar ("_"),
1403 value_from_pointer (pointer_type
,
1404 last_examine_address
));
1406 /* Make contents of last address examined available to the user as $__. */
1407 /* If the last value has not been fetched from memory then don't
1408 fetch it now - instead mark it by voiding the $__ variable. */
1409 if (VALUE_LAZY (last_examine_value
))
1410 set_internalvar (lookup_internalvar ("__"),
1411 allocate_value (builtin_type_void
));
1413 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1418 /* Add an expression to the auto-display chain.
1419 Specify the expression. */
1422 display_command (exp
, from_tty
)
1426 struct format_data fmt
;
1427 register struct expression
*expr
;
1428 register struct display
*new;
1432 if (tui_version
&& *exp
== '$')
1433 display_it
= ((TuiStatus
) tuiDo (
1434 (TuiOpaqueFuncPtr
) tui_vSetLayoutTo
, exp
) == TUI_FAILURE
);
1448 fmt
= decode_format (&exp
, 0, 0);
1449 if (fmt
.size
&& fmt
.format
== 0)
1451 if (fmt
.format
== 'i' || fmt
.format
== 's')
1461 innermost_block
= 0;
1462 expr
= parse_expression (exp
);
1464 new = (struct display
*) xmalloc (sizeof (struct display
));
1467 new->block
= innermost_block
;
1468 new->next
= display_chain
;
1469 new->number
= ++display_number
;
1471 new->status
= enabled
;
1472 display_chain
= new;
1474 if (from_tty
&& target_has_execution
)
1475 do_one_display (new);
1485 free ((PTR
) d
->exp
);
1489 /* Clear out the display_chain.
1490 Done when new symtabs are loaded, since this invalidates
1491 the types stored in many expressions. */
1496 register struct display
*d
;
1498 while ((d
= display_chain
) != NULL
)
1500 free ((PTR
) d
->exp
);
1501 display_chain
= d
->next
;
1506 /* Delete the auto-display number NUM. */
1509 delete_display (num
)
1512 register struct display
*d1
, *d
;
1515 error ("No display number %d.", num
);
1517 if (display_chain
->number
== num
)
1520 display_chain
= d1
->next
;
1524 for (d
= display_chain
;; d
= d
->next
)
1527 error ("No display number %d.", num
);
1528 if (d
->next
->number
== num
)
1538 /* Delete some values from the auto-display chain.
1539 Specify the element numbers. */
1542 undisplay_command (args
, from_tty
)
1546 register char *p
= args
;
1552 if (query ("Delete all auto-display expressions? "))
1561 while (*p1
>= '0' && *p1
<= '9')
1563 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1564 error ("Arguments must be display numbers.");
1568 delete_display (num
);
1571 while (*p
== ' ' || *p
== '\t')
1577 /* Display a single auto-display.
1578 Do nothing if the display cannot be printed in the current context,
1579 or if the display is disabled. */
1585 int within_current_scope
;
1587 if (d
->status
== disabled
)
1591 within_current_scope
= contained_in (get_selected_block (), d
->block
);
1593 within_current_scope
= 1;
1594 if (!within_current_scope
)
1597 current_display_number
= d
->number
;
1599 annotate_display_begin ();
1600 printf_filtered ("%d", d
->number
);
1601 annotate_display_number_end ();
1602 printf_filtered (": ");
1608 annotate_display_format ();
1610 printf_filtered ("x/");
1611 if (d
->format
.count
!= 1)
1612 printf_filtered ("%d", d
->format
.count
);
1613 printf_filtered ("%c", d
->format
.format
);
1614 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1615 printf_filtered ("%c", d
->format
.size
);
1616 printf_filtered (" ");
1618 annotate_display_expression ();
1620 print_expression (d
->exp
, gdb_stdout
);
1621 annotate_display_expression_end ();
1623 if (d
->format
.count
!= 1)
1624 printf_filtered ("\n");
1626 printf_filtered (" ");
1628 val
= evaluate_expression (d
->exp
);
1629 addr
= value_as_pointer (val
);
1630 if (d
->format
.format
== 'i')
1631 addr
= ADDR_BITS_REMOVE (addr
);
1633 annotate_display_value ();
1635 do_examine (d
->format
, addr
, VALUE_BFD_SECTION (val
));
1639 annotate_display_format ();
1641 if (d
->format
.format
)
1642 printf_filtered ("/%c ", d
->format
.format
);
1644 annotate_display_expression ();
1646 print_expression (d
->exp
, gdb_stdout
);
1647 annotate_display_expression_end ();
1649 printf_filtered (" = ");
1651 annotate_display_expression ();
1653 print_formatted (evaluate_expression (d
->exp
),
1654 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1655 printf_filtered ("\n");
1658 annotate_display_end ();
1660 gdb_flush (gdb_stdout
);
1661 current_display_number
= -1;
1664 /* Display all of the values on the auto-display chain which can be
1665 evaluated in the current scope. */
1670 register struct display
*d
;
1672 for (d
= display_chain
; d
; d
= d
->next
)
1676 /* Delete the auto-display which we were in the process of displaying.
1677 This is done when there is an error or a signal. */
1680 disable_display (num
)
1683 register struct display
*d
;
1685 for (d
= display_chain
; d
; d
= d
->next
)
1686 if (d
->number
== num
)
1688 d
->status
= disabled
;
1691 printf_unfiltered ("No display number %d.\n", num
);
1695 disable_current_display ()
1697 if (current_display_number
>= 0)
1699 disable_display (current_display_number
);
1700 fprintf_unfiltered (gdb_stderr
, "Disabling display %d to avoid infinite recursion.\n",
1701 current_display_number
);
1703 current_display_number
= -1;
1707 display_info (ignore
, from_tty
)
1711 register struct display
*d
;
1714 printf_unfiltered ("There are no auto-display expressions now.\n");
1716 printf_filtered ("Auto-display expressions now in effect:\n\
1717 Num Enb Expression\n");
1719 for (d
= display_chain
; d
; d
= d
->next
)
1721 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->status
]);
1723 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1725 else if (d
->format
.format
)
1726 printf_filtered ("/%c ", d
->format
.format
);
1727 print_expression (d
->exp
, gdb_stdout
);
1728 if (d
->block
&& !contained_in (get_selected_block (), d
->block
))
1729 printf_filtered (" (cannot be evaluated in the current context)");
1730 printf_filtered ("\n");
1731 gdb_flush (gdb_stdout
);
1736 enable_display (args
, from_tty
)
1740 register char *p
= args
;
1743 register struct display
*d
;
1747 for (d
= display_chain
; d
; d
= d
->next
)
1748 d
->status
= enabled
;
1754 while (*p1
>= '0' && *p1
<= '9')
1756 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1757 error ("Arguments must be display numbers.");
1761 for (d
= display_chain
; d
; d
= d
->next
)
1762 if (d
->number
== num
)
1764 d
->status
= enabled
;
1767 printf_unfiltered ("No display number %d.\n", num
);
1770 while (*p
== ' ' || *p
== '\t')
1777 disable_display_command (args
, from_tty
)
1781 register char *p
= args
;
1783 register struct display
*d
;
1787 for (d
= display_chain
; d
; d
= d
->next
)
1788 d
->status
= disabled
;
1794 while (*p1
>= '0' && *p1
<= '9')
1796 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1797 error ("Arguments must be display numbers.");
1799 disable_display (atoi (p
));
1802 while (*p
== ' ' || *p
== '\t')
1808 /* Print the value in stack frame FRAME of a variable
1809 specified by a struct symbol. */
1812 print_variable_value (var
, frame
, stream
)
1814 struct frame_info
*frame
;
1815 struct ui_file
*stream
;
1817 value_ptr val
= read_var_value (var
, frame
);
1819 value_print (val
, stream
, 0, Val_pretty_default
);
1822 /* Print the arguments of a stack frame, given the function FUNC
1823 running in that frame (as a symbol), the info on the frame,
1824 and the number of args according to the stack frame (or -1 if unknown). */
1826 /* References here and elsewhere to "number of args according to the
1827 stack frame" appear in all cases to refer to "number of ints of args
1828 according to the stack frame". At least for VAX, i386, isi. */
1831 print_frame_args (func
, fi
, num
, stream
)
1832 struct symbol
*func
;
1833 struct frame_info
*fi
;
1835 struct ui_file
*stream
;
1837 struct block
*b
= NULL
;
1841 register struct symbol
*sym
;
1842 register value_ptr val
;
1843 /* Offset of next stack argument beyond the one we have seen that is
1844 at the highest offset.
1845 -1 if we haven't come to a stack argument yet. */
1846 long highest_offset
= -1;
1848 /* Number of ints of arguments that we have printed so far. */
1849 int args_printed
= 0;
1851 struct cleanup
*old_chain
;
1852 struct ui_stream
*stb
;
1854 stb
= ui_out_stream_new (uiout
);
1855 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1860 b
= SYMBOL_BLOCK_VALUE (func
);
1861 nsyms
= BLOCK_NSYMS (b
);
1864 for (i
= 0; i
< nsyms
; i
++)
1867 sym
= BLOCK_SYM (b
, i
);
1869 /* Keep track of the highest stack argument offset seen, and
1870 skip over any kinds of symbols we don't care about. */
1872 switch (SYMBOL_CLASS (sym
))
1877 long current_offset
= SYMBOL_VALUE (sym
);
1878 arg_size
= TYPE_LENGTH (SYMBOL_TYPE (sym
));
1880 /* Compute address of next argument by adding the size of
1881 this argument and rounding to an int boundary. */
1883 ((current_offset
+ arg_size
+ sizeof (int) - 1)
1884 & ~(sizeof (int) - 1));
1886 /* If this is the highest offset seen yet, set highest_offset. */
1887 if (highest_offset
== -1
1888 || (current_offset
> highest_offset
))
1889 highest_offset
= current_offset
;
1891 /* Add the number of ints we're about to print to args_printed. */
1892 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
1895 /* We care about types of symbols, but don't need to keep track of
1896 stack offsets in them. */
1898 case LOC_REGPARM_ADDR
:
1900 case LOC_BASEREG_ARG
:
1903 /* Other types of symbols we just skip over. */
1908 /* We have to look up the symbol because arguments can have
1909 two entries (one a parameter, one a local) and the one we
1910 want is the local, which lookup_symbol will find for us.
1911 This includes gcc1 (not gcc2) on the sparc when passing a
1912 small structure and gcc2 when the argument type is float
1913 and it is passed as a double and converted to float by
1914 the prologue (in the latter case the type of the LOC_ARG
1915 symbol is double and the type of the LOC_LOCAL symbol is
1917 /* But if the parameter name is null, don't try it.
1918 Null parameter names occur on the RS/6000, for traceback tables.
1919 FIXME, should we even print them? */
1921 if (*SYMBOL_NAME (sym
))
1923 struct symbol
*nsym
;
1924 nsym
= lookup_symbol
1926 b
, VAR_NAMESPACE
, (int *) NULL
, (struct symtab
**) NULL
);
1927 if (SYMBOL_CLASS (nsym
) == LOC_REGISTER
)
1929 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1930 it was passed on the stack and loaded into a register,
1931 or passed in a register and stored in a stack slot.
1932 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1934 Reasons for using the LOC_ARG:
1935 (1) because find_saved_registers may be slow for remote
1937 (2) because registers are often re-used and stack slots
1938 rarely (never?) are. Therefore using the stack slot is
1939 much less likely to print garbage.
1941 Reasons why we might want to use the LOC_REGISTER:
1942 (1) So that the backtrace prints the same value as
1943 "print foo". I see no compelling reason why this needs
1944 to be the case; having the backtrace print the value which
1945 was passed in, and "print foo" print the value as modified
1946 within the called function, makes perfect sense to me.
1948 Additional note: It might be nice if "info args" displayed
1950 One more note: There is a case with sparc structure passing
1951 where we need to use the LOC_REGISTER, but this is dealt with
1952 by creating a single LOC_REGPARM in symbol reading. */
1954 /* Leave sym (the LOC_ARG) alone. */
1962 /* Print the current arg. */
1964 ui_out_text (uiout
, ", ");
1965 ui_out_wrap_hint (uiout
, " ");
1967 annotate_arg_begin ();
1969 ui_out_list_begin (uiout
, NULL
);
1970 fprintf_symbol_filtered (stb
->stream
, SYMBOL_SOURCE_NAME (sym
),
1971 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1972 ui_out_field_stream (uiout
, "name", stb
);
1973 annotate_arg_name_end ();
1974 ui_out_text (uiout
, "=");
1976 /* Print the current arg. */
1978 fprintf_filtered (stream
, ", ");
1981 annotate_arg_begin ();
1983 fprintf_symbol_filtered (stream
, SYMBOL_SOURCE_NAME (sym
),
1984 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1985 annotate_arg_name_end ();
1986 fputs_filtered ("=", stream
);
1989 /* Avoid value_print because it will deref ref parameters. We just
1990 want to print their addresses. Print ??? for args whose address
1991 we do not know. We pass 2 as "recurse" to val_print because our
1992 standard indentation here is 4 spaces, and val_print indents
1993 2 for each recurse. */
1994 val
= read_var_value (sym
, fi
);
1996 annotate_arg_value (val
== NULL
? NULL
: VALUE_TYPE (val
));
2000 if (GDB_TARGET_IS_D10V
2001 && SYMBOL_CLASS (sym
) == LOC_REGPARM
&& TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_PTR
)
2002 TYPE_LENGTH (VALUE_TYPE (val
)) = 2;
2004 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
2005 VALUE_ADDRESS (val
),
2006 stb
->stream
, 0, 0, 2, Val_no_prettyprint
);
2007 ui_out_field_stream (uiout
, "value", stb
);
2010 ui_out_text (uiout
, "???");
2012 ui_out_list_end (uiout
);
2014 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
2015 VALUE_ADDRESS (val
),
2016 stream
, 0, 0, 2, Val_no_prettyprint
);
2019 fputs_filtered ("???", stream
);
2022 annotate_arg_end ();
2027 /* Don't print nameless args in situations where we don't know
2028 enough about the stack to find them. */
2033 if (highest_offset
== -1)
2034 start
= FRAME_ARGS_SKIP
;
2036 start
= highest_offset
;
2038 print_frame_nameless_args (fi
, start
, num
- args_printed
,
2042 do_cleanups (old_chain
);
2043 #endif /* no UI_OUT */
2046 /* Print nameless args on STREAM.
2047 FI is the frameinfo for this frame, START is the offset
2048 of the first nameless arg, and NUM is the number of nameless args to
2049 print. FIRST is nonzero if this is the first argument (not just
2050 the first nameless arg). */
2053 print_frame_nameless_args (fi
, start
, num
, first
, stream
)
2054 struct frame_info
*fi
;
2058 struct ui_file
*stream
;
2064 for (i
= 0; i
< num
; i
++)
2067 #ifdef NAMELESS_ARG_VALUE
2068 NAMELESS_ARG_VALUE (fi
, start
, &arg_value
);
2070 argsaddr
= FRAME_ARGS_ADDRESS (fi
);
2074 arg_value
= read_memory_integer (argsaddr
+ start
, sizeof (int));
2078 fprintf_filtered (stream
, ", ");
2080 #ifdef PRINT_NAMELESS_INTEGER
2081 PRINT_NAMELESS_INTEGER (stream
, arg_value
);
2083 #ifdef PRINT_TYPELESS_INTEGER
2084 PRINT_TYPELESS_INTEGER (stream
, builtin_type_int
, (LONGEST
) arg_value
);
2086 fprintf_filtered (stream
, "%ld", arg_value
);
2087 #endif /* PRINT_TYPELESS_INTEGER */
2088 #endif /* PRINT_NAMELESS_INTEGER */
2090 start
+= sizeof (int);
2096 printf_command (arg
, from_tty
)
2100 register char *f
= NULL
;
2101 register char *s
= arg
;
2102 char *string
= NULL
;
2103 value_ptr
*val_args
;
2105 char *current_substring
;
2107 int allocated_args
= 20;
2108 struct cleanup
*old_cleanups
;
2110 val_args
= (value_ptr
*) xmalloc (allocated_args
* sizeof (value_ptr
));
2111 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
2114 error_no_arg ("format-control string and values to print");
2116 /* Skip white space before format string */
2117 while (*s
== ' ' || *s
== '\t')
2120 /* A format string should follow, enveloped in double quotes */
2122 error ("Bad format string, missing '\"'.");
2124 /* Parse the format-control string and copy it into the string STRING,
2125 processing some kinds of escape sequence. */
2127 f
= string
= (char *) alloca (strlen (s
) + 1);
2135 error ("Bad format string, non-terminated '\"'.");
2147 *f
++ = '\007'; /* Bell */
2172 /* ??? TODO: handle other escape sequences */
2173 error ("Unrecognized escape character \\%c in format string.",
2183 /* Skip over " and following space and comma. */
2186 while (*s
== ' ' || *s
== '\t')
2189 if (*s
!= ',' && *s
!= 0)
2190 error ("Invalid argument syntax");
2194 while (*s
== ' ' || *s
== '\t')
2197 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2198 substrings
= alloca (strlen (string
) * 2);
2199 current_substring
= substrings
;
2202 /* Now scan the string for %-specs and see what kinds of args they want.
2203 argclass[I] classifies the %-specs so we can give printf_filtered
2204 something of the right size. */
2208 no_arg
, int_arg
, string_arg
, double_arg
, long_long_arg
2210 enum argclass
*argclass
;
2211 enum argclass this_argclass
;
2217 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
2225 while (strchr ("0123456789.hlL-+ #", *f
))
2227 if (*f
== 'l' || *f
== 'L')
2234 this_argclass
= string_arg
;
2240 this_argclass
= double_arg
;
2244 error ("`*' not supported for precision or width in printf");
2247 error ("Format specifier `n' not supported in printf");
2250 this_argclass
= no_arg
;
2255 this_argclass
= long_long_arg
;
2257 this_argclass
= int_arg
;
2261 if (this_argclass
!= no_arg
)
2263 strncpy (current_substring
, last_arg
, f
- last_arg
);
2264 current_substring
+= f
- last_arg
;
2265 *current_substring
++ = '\0';
2267 argclass
[nargs_wanted
++] = this_argclass
;
2271 /* Now, parse all arguments and evaluate them.
2272 Store the VALUEs in VAL_ARGS. */
2277 if (nargs
== allocated_args
)
2278 val_args
= (value_ptr
*) xrealloc ((char *) val_args
,
2279 (allocated_args
*= 2)
2280 * sizeof (value_ptr
));
2282 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2284 /* If format string wants a float, unchecked-convert the value to
2285 floating point of the same size */
2287 if (argclass
[nargs
] == double_arg
)
2289 struct type
*type
= VALUE_TYPE (val_args
[nargs
]);
2290 if (TYPE_LENGTH (type
) == sizeof (float))
2291 VALUE_TYPE (val_args
[nargs
]) = builtin_type_float
;
2292 if (TYPE_LENGTH (type
) == sizeof (double))
2293 VALUE_TYPE (val_args
[nargs
]) = builtin_type_double
;
2301 if (nargs
!= nargs_wanted
)
2302 error ("Wrong number of arguments for specified format-string");
2304 /* Now actually print them. */
2305 current_substring
= substrings
;
2306 for (i
= 0; i
< nargs
; i
++)
2308 switch (argclass
[i
])
2315 tem
= value_as_pointer (val_args
[i
]);
2317 /* This is a %s argument. Find the length of the string. */
2322 read_memory_section (tem
+ j
, &c
, 1,
2323 VALUE_BFD_SECTION (val_args
[i
]));
2328 /* Copy the string contents into a string inside GDB. */
2329 str
= (char *) alloca (j
+ 1);
2330 read_memory_section (tem
, str
, j
, VALUE_BFD_SECTION (val_args
[i
]));
2333 printf_filtered (current_substring
, str
);
2338 double val
= value_as_double (val_args
[i
]);
2339 printf_filtered (current_substring
, val
);
2343 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2345 long long val
= value_as_long (val_args
[i
]);
2346 printf_filtered (current_substring
, val
);
2350 error ("long long not supported in printf");
2354 /* FIXME: there should be separate int_arg and long_arg. */
2355 long val
= value_as_long (val_args
[i
]);
2356 printf_filtered (current_substring
, val
);
2359 default: /* purecov: deadcode */
2360 error ("internal error in printf_command"); /* purecov: deadcode */
2362 /* Skip to the next substring. */
2363 current_substring
+= strlen (current_substring
) + 1;
2365 /* Print the portion of the format string after the last argument. */
2366 printf_filtered (last_arg
);
2368 do_cleanups (old_cleanups
);
2371 /* Dump a specified section of assembly code. With no command line
2372 arguments, this command will dump the assembly code for the
2373 function surrounding the pc value in the selected frame. With one
2374 argument, it will dump the assembly code surrounding that pc value.
2375 Two arguments are interpeted as bounds within which to dump
2380 disassemble_command (arg
, from_tty
)
2384 CORE_ADDR low
, high
;
2386 CORE_ADDR pc
, pc_masked
;
2395 if (!selected_frame
)
2396 error ("No frame selected.\n");
2398 pc
= get_frame_pc (selected_frame
);
2399 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2400 error ("No function contains program counter for selected frame.\n");
2402 else if (tui_version
)
2403 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2407 low
+= FUNCTION_START_OFFSET
;
2409 else if (!(space_index
= (char *) strchr (arg
, ' ')))
2412 pc
= parse_and_eval_address (arg
);
2413 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2414 error ("No function contains specified address.\n");
2416 else if (tui_version
)
2417 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2422 if (overlay_debugging
)
2424 section
= find_pc_overlay (pc
);
2425 if (pc_in_unmapped_range (pc
, section
))
2427 /* find_pc_partial_function will have returned low and high
2428 relative to the symbolic (mapped) address range. Need to
2429 translate them back to the unmapped range where PC is. */
2430 low
= overlay_unmapped_address (low
, section
);
2431 high
= overlay_unmapped_address (high
, section
);
2435 low
+= FUNCTION_START_OFFSET
;
2439 /* Two arguments. */
2440 *space_index
= '\0';
2441 low
= parse_and_eval_address (arg
);
2442 high
= parse_and_eval_address (space_index
+ 1);
2447 m_winPtrIsNull (disassemWin
) || !disassemWin
->generic
.isVisible
)
2450 printf_filtered ("Dump of assembler code ");
2453 printf_filtered ("for function %s:\n", name
);
2457 printf_filtered ("from ");
2458 print_address_numeric (low
, 1, gdb_stdout
);
2459 printf_filtered (" to ");
2460 print_address_numeric (high
, 1, gdb_stdout
);
2461 printf_filtered (":\n");
2464 /* Dump the specified range. */
2467 #ifdef GDB_TARGET_MASK_DISAS_PC
2468 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2473 while (pc_masked
< high
)
2476 print_address (pc_masked
, gdb_stdout
);
2477 printf_filtered (":\t");
2478 /* We often wrap here if there are long symbolic names. */
2480 pc
+= print_insn (pc
, gdb_stdout
);
2481 printf_filtered ("\n");
2483 #ifdef GDB_TARGET_MASK_DISAS_PC
2484 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2489 printf_filtered ("End of assembler dump.\n");
2490 gdb_flush (gdb_stdout
);
2495 tuiDo ((TuiOpaqueFuncPtr
) tui_vAddWinToLayout
, DISASSEM_WIN
);
2496 tuiDo ((TuiOpaqueFuncPtr
) tui_vUpdateSourceWindowsWithAddr
, low
);
2501 /* Print the instruction at address MEMADDR in debugged memory,
2502 on STREAM. Returns length of the instruction, in bytes. */
2505 print_insn (memaddr
, stream
)
2507 struct ui_file
*stream
;
2509 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2510 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_BIG
;
2512 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_LITTLE
;
2514 if (TARGET_ARCHITECTURE
!= NULL
)
2515 TARGET_PRINT_INSN_INFO
->mach
= TARGET_ARCHITECTURE
->mach
;
2516 /* else: should set .mach=0 but some disassemblers don't grok this */
2518 return TARGET_PRINT_INSN (memaddr
, TARGET_PRINT_INSN_INFO
);
2523 _initialize_printcmd ()
2525 current_display_number
= -1;
2527 add_info ("address", address_info
,
2528 "Describe where symbol SYM is stored.");
2530 add_info ("symbol", sym_info
,
2531 "Describe what symbol is at location ADDR.\n\
2532 Only for symbols with fixed locations (global or static scope).");
2534 add_com ("x", class_vars
, x_command
,
2535 concat ("Examine memory: x/FMT ADDRESS.\n\
2536 ADDRESS is an expression for the memory address to examine.\n\
2537 FMT is a repeat count followed by a format letter and a size letter.\n\
2538 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2539 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
2540 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2541 The specified number of objects of the specified size are printed\n\
2542 according to the format.\n\n\
2543 Defaults for format and size letters are those previously used.\n\
2544 Default count is 1. Default address is following last thing printed\n\
2545 with this command or \"print\".", NULL
));
2547 add_com ("disassemble", class_vars
, disassemble_command
,
2548 "Disassemble a specified section of memory.\n\
2549 Default is the function surrounding the pc of the selected frame.\n\
2550 With a single argument, the function surrounding that address is dumped.\n\
2551 Two arguments are taken as a range of memory to dump.");
2553 add_com_alias ("va", "disassemble", class_xdb
, 0);
2556 add_com ("whereis", class_vars
, whereis_command
,
2557 "Print line number and file of definition of variable.");
2560 add_info ("display", display_info
,
2561 "Expressions to display when program stops, with code numbers.");
2563 add_cmd ("undisplay", class_vars
, undisplay_command
,
2564 "Cancel some expressions to be displayed when program stops.\n\
2565 Arguments are the code numbers of the expressions to stop displaying.\n\
2566 No argument means cancel all automatic-display expressions.\n\
2567 \"delete display\" has the same effect as this command.\n\
2568 Do \"info display\" to see current list of code numbers.",
2571 add_com ("display", class_vars
, display_command
,
2572 "Print value of expression EXP each time the program stops.\n\
2573 /FMT may be used before EXP as in the \"print\" command.\n\
2574 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2575 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2576 and examining is done as in the \"x\" command.\n\n\
2577 With no argument, display all currently requested auto-display expressions.\n\
2578 Use \"undisplay\" to cancel display requests previously made."
2581 add_cmd ("display", class_vars
, enable_display
,
2582 "Enable some expressions to be displayed when program stops.\n\
2583 Arguments are the code numbers of the expressions to resume displaying.\n\
2584 No argument means enable all automatic-display expressions.\n\
2585 Do \"info display\" to see current list of code numbers.", &enablelist
);
2587 add_cmd ("display", class_vars
, disable_display_command
,
2588 "Disable some expressions to be displayed when program stops.\n\
2589 Arguments are the code numbers of the expressions to stop displaying.\n\
2590 No argument means disable all automatic-display expressions.\n\
2591 Do \"info display\" to see current list of code numbers.", &disablelist
);
2593 add_cmd ("display", class_vars
, undisplay_command
,
2594 "Cancel some expressions to be displayed when program stops.\n\
2595 Arguments are the code numbers of the expressions to stop displaying.\n\
2596 No argument means cancel all automatic-display expressions.\n\
2597 Do \"info display\" to see current list of code numbers.", &deletelist
);
2599 add_com ("printf", class_vars
, printf_command
,
2600 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2601 This is useful for formatted output in user-defined commands.");
2603 add_com ("output", class_vars
, output_command
,
2604 "Like \"print\" but don't put in value history and don't print newline.\n\
2605 This is useful in user-defined commands.");
2607 add_prefix_cmd ("set", class_vars
, set_command
,
2608 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2609 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2610 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2611 with $), a register (a few standard names starting with $), or an actual\n\
2612 variable in the program being debugged. EXP is any valid expression.\n",
2613 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2614 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2615 You can see these environment settings with the \"show\" command.", NULL
),
2616 &setlist
, "set ", 1, &cmdlist
);
2618 add_com ("assign", class_vars
, set_command
, concat ("Evaluate expression \
2619 EXP and assign result to variable VAR, using assignment\n\
2620 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2621 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2622 with $), a register (a few standard names starting with $), or an actual\n\
2623 variable in the program being debugged. EXP is any valid expression.\n",
2624 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2625 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2626 You can see these environment settings with the \"show\" command.", NULL
));
2628 /* "call" is the same as "set", but handy for dbx users to call fns. */
2629 add_com ("call", class_vars
, call_command
,
2630 "Call a function in the program.\n\
2631 The argument is the function name and arguments, in the notation of the\n\
2632 current working language. The result is printed and saved in the value\n\
2633 history, if it is not void.");
2635 add_cmd ("variable", class_vars
, set_command
,
2636 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2637 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2638 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2639 with $), a register (a few standard names starting with $), or an actual\n\
2640 variable in the program being debugged. EXP is any valid expression.\n\
2641 This may usually be abbreviated to simply \"set\".",
2644 add_com ("print", class_vars
, print_command
,
2645 concat ("Print value of expression EXP.\n\
2646 Variables accessible are those of the lexical environment of the selected\n\
2647 stack frame, plus all those whose scope is global or an entire file.\n\
2649 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2650 $$NUM refers to NUM'th value back from the last one.\n\
2651 Names starting with $ refer to registers (with the values they would have\n",
2652 "if the program were to return to the stack frame now selected, restoring\n\
2653 all registers saved by frames farther in) or else to debugger\n\
2654 \"convenience\" variables (any such name not a known register).\n\
2655 Use assignment expressions to give values to convenience variables.\n",
2657 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2658 @ is a binary operator for treating consecutive data objects\n\
2659 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2660 element is FOO, whose second element is stored in the space following\n\
2661 where FOO is stored, etc. FOO must be an expression whose value\n\
2662 resides in memory.\n",
2664 EXP may be preceded with /FMT, where FMT is a format letter\n\
2665 but no count or size letter (see \"x\" command).", NULL
));
2666 add_com_alias ("p", "print", class_vars
, 1);
2668 add_com ("inspect", class_vars
, inspect_command
,
2669 "Same as \"print\" command, except that if you are running in the epoch\n\
2670 environment, the value is printed in its own window.");
2673 add_set_cmd ("max-symbolic-offset", no_class
, var_uinteger
,
2674 (char *) &max_symbolic_offset
,
2675 "Set the largest offset that will be printed in <symbol+1234> form.",
2679 add_set_cmd ("symbol-filename", no_class
, var_boolean
,
2680 (char *) &print_symbol_filename
,
2681 "Set printing of source filename and line number with <symbol>.",
2685 /* For examine/instruction a single byte quantity is specified as
2686 the data. This avoids problems with value_at_lazy() requiring a
2687 valid data type (and rejecting VOID). */
2688 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2690 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2691 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2692 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2693 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);