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 ((make_cleanup_func
) free_current_contents
,
941 val
= evaluate_expression (expr
);
943 /* C++: figure out what type we actually want to print it as. */
944 type
= VALUE_TYPE (val
);
947 && (TYPE_CODE (type
) == TYPE_CODE_PTR
948 || TYPE_CODE (type
) == TYPE_CODE_REF
)
949 && (TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_STRUCT
950 || TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_UNION
))
954 v
= value_from_vtable_info (val
, TYPE_TARGET_TYPE (type
));
958 type
= VALUE_TYPE (val
);
963 val
= access_value_history (0);
965 if (voidprint
|| (val
&& VALUE_TYPE (val
) &&
966 TYPE_CODE (VALUE_TYPE (val
)) != TYPE_CODE_VOID
))
968 int histindex
= record_latest_value (val
);
971 annotate_value_history_begin (histindex
, VALUE_TYPE (val
));
973 annotate_value_begin (VALUE_TYPE (val
));
976 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp
, histindex
);
977 else if (histindex
>= 0)
978 printf_filtered ("$%d = ", histindex
);
981 annotate_value_history_value ();
983 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
984 printf_filtered ("\n");
987 annotate_value_history_end ();
989 annotate_value_end ();
992 printf_unfiltered ("\") )\030");
996 do_cleanups (old_chain
);
997 inspect_it
= 0; /* Reset print routines to normal */
1002 print_command (exp
, from_tty
)
1006 print_command_1 (exp
, 0, 1);
1009 /* Same as print, except in epoch, it gets its own window */
1012 inspect_command (exp
, from_tty
)
1016 extern int epoch_interface
;
1018 print_command_1 (exp
, epoch_interface
, 1);
1021 /* Same as print, except it doesn't print void results. */
1024 call_command (exp
, from_tty
)
1028 print_command_1 (exp
, 0, 0);
1033 output_command (exp
, from_tty
)
1037 struct expression
*expr
;
1038 register struct cleanup
*old_chain
;
1039 register char format
= 0;
1040 register value_ptr val
;
1041 struct format_data fmt
;
1043 if (exp
&& *exp
== '/')
1046 fmt
= decode_format (&exp
, 0, 0);
1047 validate_format (fmt
, "output");
1048 format
= fmt
.format
;
1051 expr
= parse_expression (exp
);
1052 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
, &expr
);
1054 val
= evaluate_expression (expr
);
1056 annotate_value_begin (VALUE_TYPE (val
));
1058 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
1060 annotate_value_end ();
1063 gdb_flush (gdb_stdout
);
1065 do_cleanups (old_chain
);
1070 set_command (exp
, from_tty
)
1074 struct expression
*expr
= parse_expression (exp
);
1075 register struct cleanup
*old_chain
1076 = make_cleanup ((make_cleanup_func
) free_current_contents
, &expr
);
1077 evaluate_expression (expr
);
1078 do_cleanups (old_chain
);
1083 sym_info (arg
, from_tty
)
1087 struct minimal_symbol
*msymbol
;
1088 struct objfile
*objfile
;
1089 struct obj_section
*osect
;
1091 CORE_ADDR addr
, sect_addr
;
1093 unsigned int offset
;
1096 error_no_arg ("address");
1098 addr
= parse_and_eval_address (arg
);
1099 ALL_OBJSECTIONS (objfile
, osect
)
1101 sect
= osect
->the_bfd_section
;
1102 sect_addr
= overlay_mapped_address (addr
, sect
);
1104 if (osect
->addr
<= sect_addr
&& sect_addr
< osect
->endaddr
&&
1105 (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, sect
)))
1108 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1110 printf_filtered ("%s + %u in ",
1111 SYMBOL_SOURCE_NAME (msymbol
), offset
);
1113 printf_filtered ("%s in ",
1114 SYMBOL_SOURCE_NAME (msymbol
));
1115 if (pc_in_unmapped_range (addr
, sect
))
1116 printf_filtered ("load address range of ");
1117 if (section_is_overlay (sect
))
1118 printf_filtered ("%s overlay ",
1119 section_is_mapped (sect
) ? "mapped" : "unmapped");
1120 printf_filtered ("section %s", sect
->name
);
1121 printf_filtered ("\n");
1125 printf_filtered ("No symbol matches %s.\n", arg
);
1130 address_info (exp
, from_tty
)
1134 register struct symbol
*sym
;
1135 register struct minimal_symbol
*msymbol
;
1137 register long basereg
;
1139 CORE_ADDR load_addr
;
1140 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1141 if exp is a field of `this'. */
1144 error ("Argument required.");
1146 sym
= lookup_symbol (exp
, get_selected_block (), VAR_NAMESPACE
,
1147 &is_a_field_of_this
, (struct symtab
**) NULL
);
1150 if (is_a_field_of_this
)
1152 printf_filtered ("Symbol \"");
1153 fprintf_symbol_filtered (gdb_stdout
, exp
,
1154 current_language
->la_language
, DMGL_ANSI
);
1155 printf_filtered ("\" is a field of the local class variable `this'\n");
1159 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1161 if (msymbol
!= NULL
)
1163 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1165 printf_filtered ("Symbol \"");
1166 fprintf_symbol_filtered (gdb_stdout
, exp
,
1167 current_language
->la_language
, DMGL_ANSI
);
1168 printf_filtered ("\" is at ");
1169 print_address_numeric (load_addr
, 1, gdb_stdout
);
1170 printf_filtered (" in a file compiled without debugging");
1171 section
= SYMBOL_BFD_SECTION (msymbol
);
1172 if (section_is_overlay (section
))
1174 load_addr
= overlay_unmapped_address (load_addr
, section
);
1175 printf_filtered (",\n -- loaded at ");
1176 print_address_numeric (load_addr
, 1, gdb_stdout
);
1177 printf_filtered (" in overlay section %s", section
->name
);
1179 printf_filtered (".\n");
1182 error ("No symbol \"%s\" in current context.", exp
);
1186 printf_filtered ("Symbol \"");
1187 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_NAME (sym
),
1188 current_language
->la_language
, DMGL_ANSI
);
1189 printf_filtered ("\" is ");
1190 val
= SYMBOL_VALUE (sym
);
1191 basereg
= SYMBOL_BASEREG (sym
);
1192 section
= SYMBOL_BFD_SECTION (sym
);
1194 switch (SYMBOL_CLASS (sym
))
1197 case LOC_CONST_BYTES
:
1198 printf_filtered ("constant");
1202 printf_filtered ("a label at address ");
1203 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1205 if (section_is_overlay (section
))
1207 load_addr
= overlay_unmapped_address (load_addr
, section
);
1208 printf_filtered (",\n -- loaded at ");
1209 print_address_numeric (load_addr
, 1, gdb_stdout
);
1210 printf_filtered (" in overlay section %s", section
->name
);
1215 printf_filtered ("a variable in register %s", REGISTER_NAME (val
));
1219 printf_filtered ("static storage at address ");
1220 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1222 if (section_is_overlay (section
))
1224 load_addr
= overlay_unmapped_address (load_addr
, section
);
1225 printf_filtered (",\n -- loaded at ");
1226 print_address_numeric (load_addr
, 1, gdb_stdout
);
1227 printf_filtered (" in overlay section %s", section
->name
);
1232 printf_filtered ("external global (indirect addressing), at address *(");
1233 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1235 printf_filtered (")");
1236 if (section_is_overlay (section
))
1238 load_addr
= overlay_unmapped_address (load_addr
, section
);
1239 printf_filtered (",\n -- loaded at ");
1240 print_address_numeric (load_addr
, 1, gdb_stdout
);
1241 printf_filtered (" in overlay section %s", section
->name
);
1246 printf_filtered ("an argument in register %s", REGISTER_NAME (val
));
1249 case LOC_REGPARM_ADDR
:
1250 printf_filtered ("address of an argument in register %s", REGISTER_NAME (val
));
1254 printf_filtered ("an argument at offset %ld", val
);
1258 printf_filtered ("an argument at frame offset %ld", val
);
1262 printf_filtered ("a local variable at frame offset %ld", val
);
1266 printf_filtered ("a reference argument at offset %ld", val
);
1270 printf_filtered ("a variable at offset %ld from register %s",
1271 val
, REGISTER_NAME (basereg
));
1274 case LOC_BASEREG_ARG
:
1275 printf_filtered ("an argument at offset %ld from register %s",
1276 val
, REGISTER_NAME (basereg
));
1280 printf_filtered ("a typedef");
1284 printf_filtered ("a function at address ");
1285 #ifdef GDB_TARGET_MASK_DISAS_PC
1286 print_address_numeric
1287 (load_addr
= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))),
1290 print_address_numeric (load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
1293 if (section_is_overlay (section
))
1295 load_addr
= overlay_unmapped_address (load_addr
, section
);
1296 printf_filtered (",\n -- loaded at ");
1297 print_address_numeric (load_addr
, 1, gdb_stdout
);
1298 printf_filtered (" in overlay section %s", section
->name
);
1302 case LOC_UNRESOLVED
:
1304 struct minimal_symbol
*msym
;
1306 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, NULL
);
1308 printf_filtered ("unresolved");
1311 section
= SYMBOL_BFD_SECTION (msym
);
1312 printf_filtered ("static storage at address ");
1313 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (msym
),
1315 if (section_is_overlay (section
))
1317 load_addr
= overlay_unmapped_address (load_addr
, section
);
1318 printf_filtered (",\n -- loaded at ");
1319 print_address_numeric (load_addr
, 1, gdb_stdout
);
1320 printf_filtered (" in overlay section %s", section
->name
);
1326 case LOC_THREAD_LOCAL_STATIC
:
1328 "a thread-local variable at offset %ld from the thread base register %s",
1329 val
, REGISTER_NAME (basereg
));
1332 case LOC_OPTIMIZED_OUT
:
1333 printf_filtered ("optimized out");
1337 printf_filtered ("of unknown (botched) type");
1340 printf_filtered (".\n");
1344 x_command (exp
, from_tty
)
1348 struct expression
*expr
;
1349 struct format_data fmt
;
1350 struct cleanup
*old_chain
;
1353 fmt
.format
= last_format
;
1354 fmt
.size
= last_size
;
1357 if (exp
&& *exp
== '/')
1360 fmt
= decode_format (&exp
, last_format
, last_size
);
1363 /* If we have an expression, evaluate it and use it as the address. */
1365 if (exp
!= 0 && *exp
!= 0)
1367 expr
= parse_expression (exp
);
1368 /* Cause expression not to be there any more
1369 if this command is repeated with Newline.
1370 But don't clobber a user-defined command's definition. */
1373 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
,
1375 val
= evaluate_expression (expr
);
1376 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_REF
)
1377 val
= value_ind (val
);
1378 /* In rvalue contexts, such as this, functions are coerced into
1379 pointers to functions. This makes "x/i main" work. */
1380 if ( /* last_format == 'i'
1381 && */ TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_FUNC
1382 && VALUE_LVAL (val
) == lval_memory
)
1383 next_address
= VALUE_ADDRESS (val
);
1385 next_address
= value_as_pointer (val
);
1386 if (VALUE_BFD_SECTION (val
))
1387 next_section
= VALUE_BFD_SECTION (val
);
1388 do_cleanups (old_chain
);
1391 do_examine (fmt
, next_address
, next_section
);
1393 /* If the examine succeeds, we remember its size and format for next time. */
1394 last_size
= fmt
.size
;
1395 last_format
= fmt
.format
;
1397 /* Set a couple of internal variables if appropriate. */
1398 if (last_examine_value
)
1400 /* Make last address examined available to the user as $_. Use
1401 the correct pointer type. */
1402 struct type
*pointer_type
1403 = lookup_pointer_type (VALUE_TYPE (last_examine_value
));
1404 set_internalvar (lookup_internalvar ("_"),
1405 value_from_pointer (pointer_type
,
1406 last_examine_address
));
1408 /* Make contents of last address examined available to the user as $__. */
1409 /* If the last value has not been fetched from memory then don't
1410 fetch it now - instead mark it by voiding the $__ variable. */
1411 if (VALUE_LAZY (last_examine_value
))
1412 set_internalvar (lookup_internalvar ("__"),
1413 allocate_value (builtin_type_void
));
1415 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1420 /* Add an expression to the auto-display chain.
1421 Specify the expression. */
1424 display_command (exp
, from_tty
)
1428 struct format_data fmt
;
1429 register struct expression
*expr
;
1430 register struct display
*new;
1434 if (tui_version
&& *exp
== '$')
1435 display_it
= ((TuiStatus
) tuiDo (
1436 (TuiOpaqueFuncPtr
) tui_vSetLayoutTo
, exp
) == TUI_FAILURE
);
1450 fmt
= decode_format (&exp
, 0, 0);
1451 if (fmt
.size
&& fmt
.format
== 0)
1453 if (fmt
.format
== 'i' || fmt
.format
== 's')
1463 innermost_block
= 0;
1464 expr
= parse_expression (exp
);
1466 new = (struct display
*) xmalloc (sizeof (struct display
));
1469 new->block
= innermost_block
;
1470 new->next
= display_chain
;
1471 new->number
= ++display_number
;
1473 new->status
= enabled
;
1474 display_chain
= new;
1476 if (from_tty
&& target_has_execution
)
1477 do_one_display (new);
1487 free ((PTR
) d
->exp
);
1491 /* Clear out the display_chain.
1492 Done when new symtabs are loaded, since this invalidates
1493 the types stored in many expressions. */
1498 register struct display
*d
;
1500 while ((d
= display_chain
) != NULL
)
1502 free ((PTR
) d
->exp
);
1503 display_chain
= d
->next
;
1508 /* Delete the auto-display number NUM. */
1511 delete_display (num
)
1514 register struct display
*d1
, *d
;
1517 error ("No display number %d.", num
);
1519 if (display_chain
->number
== num
)
1522 display_chain
= d1
->next
;
1526 for (d
= display_chain
;; d
= d
->next
)
1529 error ("No display number %d.", num
);
1530 if (d
->next
->number
== num
)
1540 /* Delete some values from the auto-display chain.
1541 Specify the element numbers. */
1544 undisplay_command (args
, from_tty
)
1548 register char *p
= args
;
1554 if (query ("Delete all auto-display expressions? "))
1563 while (*p1
>= '0' && *p1
<= '9')
1565 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1566 error ("Arguments must be display numbers.");
1570 delete_display (num
);
1573 while (*p
== ' ' || *p
== '\t')
1579 /* Display a single auto-display.
1580 Do nothing if the display cannot be printed in the current context,
1581 or if the display is disabled. */
1587 int within_current_scope
;
1589 if (d
->status
== disabled
)
1593 within_current_scope
= contained_in (get_selected_block (), d
->block
);
1595 within_current_scope
= 1;
1596 if (!within_current_scope
)
1599 current_display_number
= d
->number
;
1601 annotate_display_begin ();
1602 printf_filtered ("%d", d
->number
);
1603 annotate_display_number_end ();
1604 printf_filtered (": ");
1610 annotate_display_format ();
1612 printf_filtered ("x/");
1613 if (d
->format
.count
!= 1)
1614 printf_filtered ("%d", d
->format
.count
);
1615 printf_filtered ("%c", d
->format
.format
);
1616 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1617 printf_filtered ("%c", d
->format
.size
);
1618 printf_filtered (" ");
1620 annotate_display_expression ();
1622 print_expression (d
->exp
, gdb_stdout
);
1623 annotate_display_expression_end ();
1625 if (d
->format
.count
!= 1)
1626 printf_filtered ("\n");
1628 printf_filtered (" ");
1630 val
= evaluate_expression (d
->exp
);
1631 addr
= value_as_pointer (val
);
1632 if (d
->format
.format
== 'i')
1633 addr
= ADDR_BITS_REMOVE (addr
);
1635 annotate_display_value ();
1637 do_examine (d
->format
, addr
, VALUE_BFD_SECTION (val
));
1641 annotate_display_format ();
1643 if (d
->format
.format
)
1644 printf_filtered ("/%c ", d
->format
.format
);
1646 annotate_display_expression ();
1648 print_expression (d
->exp
, gdb_stdout
);
1649 annotate_display_expression_end ();
1651 printf_filtered (" = ");
1653 annotate_display_expression ();
1655 print_formatted (evaluate_expression (d
->exp
),
1656 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1657 printf_filtered ("\n");
1660 annotate_display_end ();
1662 gdb_flush (gdb_stdout
);
1663 current_display_number
= -1;
1666 /* Display all of the values on the auto-display chain which can be
1667 evaluated in the current scope. */
1672 register struct display
*d
;
1674 for (d
= display_chain
; d
; d
= d
->next
)
1678 /* Delete the auto-display which we were in the process of displaying.
1679 This is done when there is an error or a signal. */
1682 disable_display (num
)
1685 register struct display
*d
;
1687 for (d
= display_chain
; d
; d
= d
->next
)
1688 if (d
->number
== num
)
1690 d
->status
= disabled
;
1693 printf_unfiltered ("No display number %d.\n", num
);
1697 disable_current_display ()
1699 if (current_display_number
>= 0)
1701 disable_display (current_display_number
);
1702 fprintf_unfiltered (gdb_stderr
, "Disabling display %d to avoid infinite recursion.\n",
1703 current_display_number
);
1705 current_display_number
= -1;
1709 display_info (ignore
, from_tty
)
1713 register struct display
*d
;
1716 printf_unfiltered ("There are no auto-display expressions now.\n");
1718 printf_filtered ("Auto-display expressions now in effect:\n\
1719 Num Enb Expression\n");
1721 for (d
= display_chain
; d
; d
= d
->next
)
1723 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->status
]);
1725 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1727 else if (d
->format
.format
)
1728 printf_filtered ("/%c ", d
->format
.format
);
1729 print_expression (d
->exp
, gdb_stdout
);
1730 if (d
->block
&& !contained_in (get_selected_block (), d
->block
))
1731 printf_filtered (" (cannot be evaluated in the current context)");
1732 printf_filtered ("\n");
1733 gdb_flush (gdb_stdout
);
1738 enable_display (args
, from_tty
)
1742 register char *p
= args
;
1745 register struct display
*d
;
1749 for (d
= display_chain
; d
; d
= d
->next
)
1750 d
->status
= enabled
;
1756 while (*p1
>= '0' && *p1
<= '9')
1758 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1759 error ("Arguments must be display numbers.");
1763 for (d
= display_chain
; d
; d
= d
->next
)
1764 if (d
->number
== num
)
1766 d
->status
= enabled
;
1769 printf_unfiltered ("No display number %d.\n", num
);
1772 while (*p
== ' ' || *p
== '\t')
1779 disable_display_command (args
, from_tty
)
1783 register char *p
= args
;
1785 register struct display
*d
;
1789 for (d
= display_chain
; d
; d
= d
->next
)
1790 d
->status
= disabled
;
1796 while (*p1
>= '0' && *p1
<= '9')
1798 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1799 error ("Arguments must be display numbers.");
1801 disable_display (atoi (p
));
1804 while (*p
== ' ' || *p
== '\t')
1810 /* Print the value in stack frame FRAME of a variable
1811 specified by a struct symbol. */
1814 print_variable_value (var
, frame
, stream
)
1816 struct frame_info
*frame
;
1817 struct ui_file
*stream
;
1819 value_ptr val
= read_var_value (var
, frame
);
1821 value_print (val
, stream
, 0, Val_pretty_default
);
1824 /* Print the arguments of a stack frame, given the function FUNC
1825 running in that frame (as a symbol), the info on the frame,
1826 and the number of args according to the stack frame (or -1 if unknown). */
1828 /* References here and elsewhere to "number of args according to the
1829 stack frame" appear in all cases to refer to "number of ints of args
1830 according to the stack frame". At least for VAX, i386, isi. */
1833 print_frame_args (func
, fi
, num
, stream
)
1834 struct symbol
*func
;
1835 struct frame_info
*fi
;
1837 struct ui_file
*stream
;
1839 struct block
*b
= NULL
;
1843 register struct symbol
*sym
;
1844 register value_ptr val
;
1845 /* Offset of next stack argument beyond the one we have seen that is
1846 at the highest offset.
1847 -1 if we haven't come to a stack argument yet. */
1848 long highest_offset
= -1;
1850 /* Number of ints of arguments that we have printed so far. */
1851 int args_printed
= 0;
1853 struct cleanup
*old_chain
;
1854 struct ui_stream
*stb
;
1856 stb
= ui_out_stream_new (uiout
);
1857 old_chain
= make_cleanup ((make_cleanup_func
) ui_out_stream_delete
, stb
);
1862 b
= SYMBOL_BLOCK_VALUE (func
);
1863 nsyms
= BLOCK_NSYMS (b
);
1866 for (i
= 0; i
< nsyms
; i
++)
1869 sym
= BLOCK_SYM (b
, i
);
1871 /* Keep track of the highest stack argument offset seen, and
1872 skip over any kinds of symbols we don't care about. */
1874 switch (SYMBOL_CLASS (sym
))
1879 long current_offset
= SYMBOL_VALUE (sym
);
1880 arg_size
= TYPE_LENGTH (SYMBOL_TYPE (sym
));
1882 /* Compute address of next argument by adding the size of
1883 this argument and rounding to an int boundary. */
1885 = ((current_offset
+ arg_size
+ sizeof (int) - 1)
1886 & ~(sizeof (int) - 1));
1888 /* If this is the highest offset seen yet, set highest_offset. */
1889 if (highest_offset
== -1
1890 || (current_offset
> highest_offset
))
1891 highest_offset
= current_offset
;
1893 /* Add the number of ints we're about to print to args_printed. */
1894 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
1897 /* We care about types of symbols, but don't need to keep track of
1898 stack offsets in them. */
1900 case LOC_REGPARM_ADDR
:
1902 case LOC_BASEREG_ARG
:
1905 /* Other types of symbols we just skip over. */
1910 /* We have to look up the symbol because arguments can have
1911 two entries (one a parameter, one a local) and the one we
1912 want is the local, which lookup_symbol will find for us.
1913 This includes gcc1 (not gcc2) on the sparc when passing a
1914 small structure and gcc2 when the argument type is float
1915 and it is passed as a double and converted to float by
1916 the prologue (in the latter case the type of the LOC_ARG
1917 symbol is double and the type of the LOC_LOCAL symbol is
1919 /* But if the parameter name is null, don't try it.
1920 Null parameter names occur on the RS/6000, for traceback tables.
1921 FIXME, should we even print them? */
1923 if (*SYMBOL_NAME (sym
))
1925 struct symbol
*nsym
;
1926 nsym
= lookup_symbol
1928 b
, VAR_NAMESPACE
, (int *) NULL
, (struct symtab
**) NULL
);
1929 if (SYMBOL_CLASS (nsym
) == LOC_REGISTER
)
1931 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1932 it was passed on the stack and loaded into a register,
1933 or passed in a register and stored in a stack slot.
1934 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1936 Reasons for using the LOC_ARG:
1937 (1) because find_saved_registers may be slow for remote
1939 (2) because registers are often re-used and stack slots
1940 rarely (never?) are. Therefore using the stack slot is
1941 much less likely to print garbage.
1943 Reasons why we might want to use the LOC_REGISTER:
1944 (1) So that the backtrace prints the same value as
1945 "print foo". I see no compelling reason why this needs
1946 to be the case; having the backtrace print the value which
1947 was passed in, and "print foo" print the value as modified
1948 within the called function, makes perfect sense to me.
1950 Additional note: It might be nice if "info args" displayed
1952 One more note: There is a case with sparc structure passing
1953 where we need to use the LOC_REGISTER, but this is dealt with
1954 by creating a single LOC_REGPARM in symbol reading. */
1956 /* Leave sym (the LOC_ARG) alone. */
1964 /* Print the current arg. */
1966 ui_out_text (uiout
, ", ");
1967 ui_out_wrap_hint (uiout
, " ");
1969 annotate_arg_begin ();
1971 ui_out_list_begin (uiout
, NULL
);
1972 fprintf_symbol_filtered (stb
->stream
, SYMBOL_SOURCE_NAME (sym
),
1973 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1974 ui_out_field_stream (uiout
, "name", stb
);
1975 annotate_arg_name_end ();
1976 ui_out_text (uiout
, "=");
1978 /* Print the current arg. */
1980 fprintf_filtered (stream
, ", ");
1983 annotate_arg_begin ();
1985 fprintf_symbol_filtered (stream
, SYMBOL_SOURCE_NAME (sym
),
1986 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1987 annotate_arg_name_end ();
1988 fputs_filtered ("=", stream
);
1991 /* Avoid value_print because it will deref ref parameters. We just
1992 want to print their addresses. Print ??? for args whose address
1993 we do not know. We pass 2 as "recurse" to val_print because our
1994 standard indentation here is 4 spaces, and val_print indents
1995 2 for each recurse. */
1996 val
= read_var_value (sym
, fi
);
1998 annotate_arg_value (val
== NULL
? NULL
: VALUE_TYPE (val
));
2002 if (GDB_TARGET_IS_D10V
2003 && SYMBOL_CLASS (sym
) == LOC_REGPARM
&& TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_PTR
)
2004 TYPE_LENGTH (VALUE_TYPE (val
)) = 2;
2006 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
2007 VALUE_ADDRESS (val
),
2008 stb
->stream
, 0, 0, 2, Val_no_prettyprint
);
2009 ui_out_field_stream (uiout
, "value", stb
);
2012 ui_out_text (uiout
, "???");
2014 ui_out_list_end (uiout
);
2016 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
2017 VALUE_ADDRESS (val
),
2018 stream
, 0, 0, 2, Val_no_prettyprint
);
2021 fputs_filtered ("???", stream
);
2024 annotate_arg_end ();
2029 /* Don't print nameless args in situations where we don't know
2030 enough about the stack to find them. */
2035 if (highest_offset
== -1)
2036 start
= FRAME_ARGS_SKIP
;
2038 start
= highest_offset
;
2040 print_frame_nameless_args (fi
, start
, num
- args_printed
,
2044 do_cleanups (old_chain
);
2045 #endif /* no UI_OUT */
2048 /* Print nameless args on STREAM.
2049 FI is the frameinfo for this frame, START is the offset
2050 of the first nameless arg, and NUM is the number of nameless args to
2051 print. FIRST is nonzero if this is the first argument (not just
2052 the first nameless arg). */
2055 print_frame_nameless_args (fi
, start
, num
, first
, stream
)
2056 struct frame_info
*fi
;
2060 struct ui_file
*stream
;
2066 for (i
= 0; i
< num
; i
++)
2069 #ifdef NAMELESS_ARG_VALUE
2070 NAMELESS_ARG_VALUE (fi
, start
, &arg_value
);
2072 argsaddr
= FRAME_ARGS_ADDRESS (fi
);
2076 arg_value
= read_memory_integer (argsaddr
+ start
, sizeof (int));
2080 fprintf_filtered (stream
, ", ");
2082 #ifdef PRINT_NAMELESS_INTEGER
2083 PRINT_NAMELESS_INTEGER (stream
, arg_value
);
2085 #ifdef PRINT_TYPELESS_INTEGER
2086 PRINT_TYPELESS_INTEGER (stream
, builtin_type_int
, (LONGEST
) arg_value
);
2088 fprintf_filtered (stream
, "%ld", arg_value
);
2089 #endif /* PRINT_TYPELESS_INTEGER */
2090 #endif /* PRINT_NAMELESS_INTEGER */
2092 start
+= sizeof (int);
2098 printf_command (arg
, from_tty
)
2102 register char *f
= NULL
;
2103 register char *s
= arg
;
2104 char *string
= NULL
;
2105 value_ptr
*val_args
;
2107 char *current_substring
;
2109 int allocated_args
= 20;
2110 struct cleanup
*old_cleanups
;
2112 val_args
= (value_ptr
*) xmalloc (allocated_args
* sizeof (value_ptr
));
2113 old_cleanups
= make_cleanup ((make_cleanup_func
) free_current_contents
,
2117 error_no_arg ("format-control string and values to print");
2119 /* Skip white space before format string */
2120 while (*s
== ' ' || *s
== '\t')
2123 /* A format string should follow, enveloped in double quotes */
2125 error ("Bad format string, missing '\"'.");
2127 /* Parse the format-control string and copy it into the string STRING,
2128 processing some kinds of escape sequence. */
2130 f
= string
= (char *) alloca (strlen (s
) + 1);
2138 error ("Bad format string, non-terminated '\"'.");
2150 *f
++ = '\007'; /* Bell */
2175 /* ??? TODO: handle other escape sequences */
2176 error ("Unrecognized escape character \\%c in format string.",
2186 /* Skip over " and following space and comma. */
2189 while (*s
== ' ' || *s
== '\t')
2192 if (*s
!= ',' && *s
!= 0)
2193 error ("Invalid argument syntax");
2197 while (*s
== ' ' || *s
== '\t')
2200 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2201 substrings
= alloca (strlen (string
) * 2);
2202 current_substring
= substrings
;
2205 /* Now scan the string for %-specs and see what kinds of args they want.
2206 argclass[I] classifies the %-specs so we can give printf_filtered
2207 something of the right size. */
2211 no_arg
, int_arg
, string_arg
, double_arg
, long_long_arg
2213 enum argclass
*argclass
;
2214 enum argclass this_argclass
;
2220 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
2228 while (strchr ("0123456789.hlL-+ #", *f
))
2230 if (*f
== 'l' || *f
== 'L')
2237 this_argclass
= string_arg
;
2243 this_argclass
= double_arg
;
2247 error ("`*' not supported for precision or width in printf");
2250 error ("Format specifier `n' not supported in printf");
2253 this_argclass
= no_arg
;
2258 this_argclass
= long_long_arg
;
2260 this_argclass
= int_arg
;
2264 if (this_argclass
!= no_arg
)
2266 strncpy (current_substring
, last_arg
, f
- last_arg
);
2267 current_substring
+= f
- last_arg
;
2268 *current_substring
++ = '\0';
2270 argclass
[nargs_wanted
++] = this_argclass
;
2274 /* Now, parse all arguments and evaluate them.
2275 Store the VALUEs in VAL_ARGS. */
2280 if (nargs
== allocated_args
)
2281 val_args
= (value_ptr
*) xrealloc ((char *) val_args
,
2282 (allocated_args
*= 2)
2283 * sizeof (value_ptr
));
2285 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2287 /* If format string wants a float, unchecked-convert the value to
2288 floating point of the same size */
2290 if (argclass
[nargs
] == double_arg
)
2292 struct type
*type
= VALUE_TYPE (val_args
[nargs
]);
2293 if (TYPE_LENGTH (type
) == sizeof (float))
2294 VALUE_TYPE (val_args
[nargs
]) = builtin_type_float
;
2295 if (TYPE_LENGTH (type
) == sizeof (double))
2296 VALUE_TYPE (val_args
[nargs
]) = builtin_type_double
;
2304 if (nargs
!= nargs_wanted
)
2305 error ("Wrong number of arguments for specified format-string");
2307 /* Now actually print them. */
2308 current_substring
= substrings
;
2309 for (i
= 0; i
< nargs
; i
++)
2311 switch (argclass
[i
])
2318 tem
= value_as_pointer (val_args
[i
]);
2320 /* This is a %s argument. Find the length of the string. */
2325 read_memory_section (tem
+ j
, &c
, 1,
2326 VALUE_BFD_SECTION (val_args
[i
]));
2331 /* Copy the string contents into a string inside GDB. */
2332 str
= (char *) alloca (j
+ 1);
2333 read_memory_section (tem
, str
, j
, VALUE_BFD_SECTION (val_args
[i
]));
2336 printf_filtered (current_substring
, str
);
2341 double val
= value_as_double (val_args
[i
]);
2342 printf_filtered (current_substring
, val
);
2346 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2348 long long val
= value_as_long (val_args
[i
]);
2349 printf_filtered (current_substring
, val
);
2353 error ("long long not supported in printf");
2357 /* FIXME: there should be separate int_arg and long_arg. */
2358 long val
= value_as_long (val_args
[i
]);
2359 printf_filtered (current_substring
, val
);
2362 default: /* purecov: deadcode */
2363 error ("internal error in printf_command"); /* purecov: deadcode */
2365 /* Skip to the next substring. */
2366 current_substring
+= strlen (current_substring
) + 1;
2368 /* Print the portion of the format string after the last argument. */
2369 printf_filtered (last_arg
);
2371 do_cleanups (old_cleanups
);
2374 /* Dump a specified section of assembly code. With no command line
2375 arguments, this command will dump the assembly code for the
2376 function surrounding the pc value in the selected frame. With one
2377 argument, it will dump the assembly code surrounding that pc value.
2378 Two arguments are interpeted as bounds within which to dump
2383 disassemble_command (arg
, from_tty
)
2387 CORE_ADDR low
, high
;
2389 CORE_ADDR pc
, pc_masked
;
2398 if (!selected_frame
)
2399 error ("No frame selected.\n");
2401 pc
= get_frame_pc (selected_frame
);
2402 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2403 error ("No function contains program counter for selected frame.\n");
2405 else if (tui_version
)
2406 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2410 low
+= FUNCTION_START_OFFSET
;
2412 else if (!(space_index
= (char *) strchr (arg
, ' ')))
2415 pc
= parse_and_eval_address (arg
);
2416 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2417 error ("No function contains specified address.\n");
2419 else if (tui_version
)
2420 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2425 if (overlay_debugging
)
2427 section
= find_pc_overlay (pc
);
2428 if (pc_in_unmapped_range (pc
, section
))
2430 /* find_pc_partial_function will have returned low and high
2431 relative to the symbolic (mapped) address range. Need to
2432 translate them back to the unmapped range where PC is. */
2433 low
= overlay_unmapped_address (low
, section
);
2434 high
= overlay_unmapped_address (high
, section
);
2438 low
+= FUNCTION_START_OFFSET
;
2442 /* Two arguments. */
2443 *space_index
= '\0';
2444 low
= parse_and_eval_address (arg
);
2445 high
= parse_and_eval_address (space_index
+ 1);
2450 m_winPtrIsNull (disassemWin
) || !disassemWin
->generic
.isVisible
)
2453 printf_filtered ("Dump of assembler code ");
2456 printf_filtered ("for function %s:\n", name
);
2460 printf_filtered ("from ");
2461 print_address_numeric (low
, 1, gdb_stdout
);
2462 printf_filtered (" to ");
2463 print_address_numeric (high
, 1, gdb_stdout
);
2464 printf_filtered (":\n");
2467 /* Dump the specified range. */
2470 #ifdef GDB_TARGET_MASK_DISAS_PC
2471 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2476 while (pc_masked
< high
)
2479 print_address (pc_masked
, gdb_stdout
);
2480 printf_filtered (":\t");
2481 /* We often wrap here if there are long symbolic names. */
2483 pc
+= print_insn (pc
, gdb_stdout
);
2484 printf_filtered ("\n");
2486 #ifdef GDB_TARGET_MASK_DISAS_PC
2487 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2492 printf_filtered ("End of assembler dump.\n");
2493 gdb_flush (gdb_stdout
);
2498 tuiDo ((TuiOpaqueFuncPtr
) tui_vAddWinToLayout
, DISASSEM_WIN
);
2499 tuiDo ((TuiOpaqueFuncPtr
) tui_vUpdateSourceWindowsWithAddr
, low
);
2504 /* Print the instruction at address MEMADDR in debugged memory,
2505 on STREAM. Returns length of the instruction, in bytes. */
2508 print_insn (memaddr
, stream
)
2510 struct ui_file
*stream
;
2512 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2513 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_BIG
;
2515 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_LITTLE
;
2517 if (TARGET_ARCHITECTURE
!= NULL
)
2518 TARGET_PRINT_INSN_INFO
->mach
= TARGET_ARCHITECTURE
->mach
;
2519 /* else: should set .mach=0 but some disassemblers don't grok this */
2521 return TARGET_PRINT_INSN (memaddr
, TARGET_PRINT_INSN_INFO
);
2526 _initialize_printcmd ()
2528 current_display_number
= -1;
2530 add_info ("address", address_info
,
2531 "Describe where symbol SYM is stored.");
2533 add_info ("symbol", sym_info
,
2534 "Describe what symbol is at location ADDR.\n\
2535 Only for symbols with fixed locations (global or static scope).");
2537 add_com ("x", class_vars
, x_command
,
2538 concat ("Examine memory: x/FMT ADDRESS.\n\
2539 ADDRESS is an expression for the memory address to examine.\n\
2540 FMT is a repeat count followed by a format letter and a size letter.\n\
2541 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2542 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
2543 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2544 The specified number of objects of the specified size are printed\n\
2545 according to the format.\n\n\
2546 Defaults for format and size letters are those previously used.\n\
2547 Default count is 1. Default address is following last thing printed\n\
2548 with this command or \"print\".", NULL
));
2550 add_com ("disassemble", class_vars
, disassemble_command
,
2551 "Disassemble a specified section of memory.\n\
2552 Default is the function surrounding the pc of the selected frame.\n\
2553 With a single argument, the function surrounding that address is dumped.\n\
2554 Two arguments are taken as a range of memory to dump.");
2556 add_com_alias ("va", "disassemble", class_xdb
, 0);
2559 add_com ("whereis", class_vars
, whereis_command
,
2560 "Print line number and file of definition of variable.");
2563 add_info ("display", display_info
,
2564 "Expressions to display when program stops, with code numbers.");
2566 add_cmd ("undisplay", class_vars
, undisplay_command
,
2567 "Cancel some expressions to be displayed when program stops.\n\
2568 Arguments are the code numbers of the expressions to stop displaying.\n\
2569 No argument means cancel all automatic-display expressions.\n\
2570 \"delete display\" has the same effect as this command.\n\
2571 Do \"info display\" to see current list of code numbers.",
2574 add_com ("display", class_vars
, display_command
,
2575 "Print value of expression EXP each time the program stops.\n\
2576 /FMT may be used before EXP as in the \"print\" command.\n\
2577 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2578 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2579 and examining is done as in the \"x\" command.\n\n\
2580 With no argument, display all currently requested auto-display expressions.\n\
2581 Use \"undisplay\" to cancel display requests previously made."
2584 add_cmd ("display", class_vars
, enable_display
,
2585 "Enable some expressions to be displayed when program stops.\n\
2586 Arguments are the code numbers of the expressions to resume displaying.\n\
2587 No argument means enable all automatic-display expressions.\n\
2588 Do \"info display\" to see current list of code numbers.", &enablelist
);
2590 add_cmd ("display", class_vars
, disable_display_command
,
2591 "Disable some expressions to be displayed when program stops.\n\
2592 Arguments are the code numbers of the expressions to stop displaying.\n\
2593 No argument means disable all automatic-display expressions.\n\
2594 Do \"info display\" to see current list of code numbers.", &disablelist
);
2596 add_cmd ("display", class_vars
, undisplay_command
,
2597 "Cancel some expressions to be displayed when program stops.\n\
2598 Arguments are the code numbers of the expressions to stop displaying.\n\
2599 No argument means cancel all automatic-display expressions.\n\
2600 Do \"info display\" to see current list of code numbers.", &deletelist
);
2602 add_com ("printf", class_vars
, printf_command
,
2603 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2604 This is useful for formatted output in user-defined commands.");
2606 add_com ("output", class_vars
, output_command
,
2607 "Like \"print\" but don't put in value history and don't print newline.\n\
2608 This is useful in user-defined commands.");
2610 add_prefix_cmd ("set", class_vars
, set_command
,
2611 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2612 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2613 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2614 with $), a register (a few standard names starting with $), or an actual\n\
2615 variable in the program being debugged. EXP is any valid expression.\n",
2616 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2617 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2618 You can see these environment settings with the \"show\" command.", NULL
),
2619 &setlist
, "set ", 1, &cmdlist
);
2621 add_com ("assign", class_vars
, set_command
, concat ("Evaluate expression \
2622 EXP and assign result to variable VAR, using assignment\n\
2623 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2624 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2625 with $), a register (a few standard names starting with $), or an actual\n\
2626 variable in the program being debugged. EXP is any valid expression.\n",
2627 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2628 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2629 You can see these environment settings with the \"show\" command.", NULL
));
2631 /* "call" is the same as "set", but handy for dbx users to call fns. */
2632 add_com ("call", class_vars
, call_command
,
2633 "Call a function in the program.\n\
2634 The argument is the function name and arguments, in the notation of the\n\
2635 current working language. The result is printed and saved in the value\n\
2636 history, if it is not void.");
2638 add_cmd ("variable", class_vars
, set_command
,
2639 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2640 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2641 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2642 with $), a register (a few standard names starting with $), or an actual\n\
2643 variable in the program being debugged. EXP is any valid expression.\n\
2644 This may usually be abbreviated to simply \"set\".",
2647 add_com ("print", class_vars
, print_command
,
2648 concat ("Print value of expression EXP.\n\
2649 Variables accessible are those of the lexical environment of the selected\n\
2650 stack frame, plus all those whose scope is global or an entire file.\n\
2652 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2653 $$NUM refers to NUM'th value back from the last one.\n\
2654 Names starting with $ refer to registers (with the values they would have\n",
2655 "if the program were to return to the stack frame now selected, restoring\n\
2656 all registers saved by frames farther in) or else to debugger\n\
2657 \"convenience\" variables (any such name not a known register).\n\
2658 Use assignment expressions to give values to convenience variables.\n",
2660 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2661 @ is a binary operator for treating consecutive data objects\n\
2662 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2663 element is FOO, whose second element is stored in the space following\n\
2664 where FOO is stored, etc. FOO must be an expression whose value\n\
2665 resides in memory.\n",
2667 EXP may be preceded with /FMT, where FMT is a format letter\n\
2668 but no count or size letter (see \"x\" command).", NULL
));
2669 add_com_alias ("p", "print", class_vars
, 1);
2671 add_com ("inspect", class_vars
, inspect_command
,
2672 "Same as \"print\" command, except that if you are running in the epoch\n\
2673 environment, the value is printed in its own window.");
2676 add_set_cmd ("max-symbolic-offset", no_class
, var_uinteger
,
2677 (char *) &max_symbolic_offset
,
2678 "Set the largest offset that will be printed in <symbol+1234> form.",
2682 add_set_cmd ("symbol-filename", no_class
, var_boolean
,
2683 (char *) &print_symbol_filename
,
2684 "Set printing of source filename and line number with <symbol>.",
2688 /* For examine/instruction a single byte quantity is specified as
2689 the data. This avoids problems with value_at_lazy() requiring a
2690 valid data type (and rejecting VOID). */
2691 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2693 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2694 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2695 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2696 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);