1 /* Print values for GNU debugger GDB.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
24 #include "gdb_string.h"
30 #include "expression.h"
34 #include "breakpoint.h"
38 #include "symfile.h" /* for overlay functions */
39 #include "objfiles.h" /* ditto */
40 #include "completer.h" /* for completion functions */
45 extern int asm_demangle
; /* Whether to demangle syms in asm printouts */
46 extern int addressprint
; /* Whether to print hex addresses in HLL " */
55 /* Last specified output format. */
57 static char last_format
= 'x';
59 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
61 static char last_size
= 'w';
63 /* Default address to examine next. */
65 static CORE_ADDR next_address
;
67 /* Default section to examine next. */
69 static asection
*next_section
;
71 /* Last address examined. */
73 static CORE_ADDR last_examine_address
;
75 /* Contents of last address examined.
76 This is not valid past the end of the `x' command! */
78 static value_ptr last_examine_value
;
80 /* Largest offset between a symbolic value and an address, that will be
81 printed as `0x1234 <symbol+offset>'. */
83 static unsigned int max_symbolic_offset
= UINT_MAX
;
85 /* Append the source filename and linenumber of the symbol when
86 printing a symbolic value as `<symbol at filename:linenum>' if set. */
87 static int print_symbol_filename
= 0;
89 /* Number of auto-display expression currently being displayed.
90 So that we can disable it if we get an error or a signal within it.
91 -1 when not doing one. */
93 int current_display_number
;
95 /* Flag to low-level print routines that this value is being printed
96 in an epoch window. We'd like to pass this as a parameter, but
97 every routine would need to take it. Perhaps we can encapsulate
98 this in the I/O stream once we have GNU stdio. */
104 /* Chain link to next auto-display item. */
105 struct display
*next
;
106 /* Expression to be evaluated and displayed. */
107 struct expression
*exp
;
108 /* Item number of this auto-display item. */
110 /* Display format specified. */
111 struct format_data format
;
112 /* Innermost block required by this expression when evaluated */
114 /* Status of this display (enabled or disabled) */
118 /* Chain of expressions whose values should be displayed
119 automatically each time the program stops. */
121 static struct display
*display_chain
;
123 static int display_number
;
125 /* Prototypes for exported functions. */
127 void output_command (char *, int);
129 void _initialize_printcmd (void);
131 /* Prototypes for local functions. */
133 static void delete_display (int);
135 static void enable_display (char *, int);
137 static void disable_display_command (char *, int);
139 static void disassemble_command (char *, int);
141 static void printf_command (char *, int);
143 static void print_frame_nameless_args (struct frame_info
*, long,
144 int, int, struct ui_file
*);
146 static void display_info (char *, int);
148 static void do_one_display (struct display
*);
150 static void undisplay_command (char *, int);
152 static void free_display (struct display
*);
154 static void display_command (char *, int);
156 void x_command (char *, int);
158 static void address_info (char *, int);
160 static void set_command (char *, int);
162 static void call_command (char *, int);
164 static void inspect_command (char *, int);
166 static void print_command (char *, int);
168 static void print_command_1 (char *, int, int);
170 static void validate_format (struct format_data
, char *);
172 static void do_examine (struct format_data
, CORE_ADDR addr
,
175 static void print_formatted (value_ptr
, int, int, struct ui_file
*);
177 static struct format_data
decode_format (char **, int, int);
179 static int print_insn (CORE_ADDR
, struct ui_file
*);
181 static void sym_info (char *, int);
184 /* Decode a format specification. *STRING_PTR should point to it.
185 OFORMAT and OSIZE are used as defaults for the format and size
186 if none are given in the format specification.
187 If OSIZE is zero, then the size field of the returned value
188 should be set only if a size is explicitly specified by the
190 The structure returned describes all the data
191 found in the specification. In addition, *STRING_PTR is advanced
192 past the specification and past all whitespace following it. */
194 static struct format_data
195 decode_format (char **string_ptr
, int oformat
, int osize
)
197 struct format_data val
;
198 register char *p
= *string_ptr
;
204 if (*p
>= '0' && *p
<= '9')
205 val
.count
= atoi (p
);
206 while (*p
>= '0' && *p
<= '9')
209 /* Now process size or format letters that follow. */
213 if (*p
== 'b' || *p
== 'h' || *p
== 'w' || *p
== 'g')
215 else if (*p
>= 'a' && *p
<= 'z')
221 while (*p
== ' ' || *p
== '\t')
225 /* Set defaults for format and size if not specified. */
226 if (val
.format
== '?')
230 /* Neither has been specified. */
231 val
.format
= oformat
;
235 /* If a size is specified, any format makes a reasonable
236 default except 'i'. */
237 val
.format
= oformat
== 'i' ? 'x' : oformat
;
239 else if (val
.size
== '?')
244 /* Pick the appropriate size for an address. */
245 if (TARGET_PTR_BIT
== 64)
246 val
.size
= osize
? 'g' : osize
;
247 else if (TARGET_PTR_BIT
== 32)
248 val
.size
= osize
? 'w' : osize
;
249 else if (TARGET_PTR_BIT
== 16)
250 val
.size
= osize
? 'h' : osize
;
252 /* Bad value for TARGET_PTR_BIT */
253 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
256 /* Floating point has to be word or giantword. */
257 if (osize
== 'w' || osize
== 'g')
260 /* Default it to giantword if the last used size is not
262 val
.size
= osize
? 'g' : osize
;
265 /* Characters default to one byte. */
266 val
.size
= osize
? 'b' : osize
;
269 /* The default is the size most recently specified. */
276 /* Print value VAL on stream according to FORMAT, a letter or 0.
277 Do not end with a newline.
278 0 means print VAL according to its own type.
279 SIZE is the letter for the size of datum being printed.
280 This is used to pad hex numbers so they line up. */
283 print_formatted (register value_ptr val
, register int format
, int size
,
284 struct ui_file
*stream
)
286 struct type
*type
= check_typedef (VALUE_TYPE (val
));
287 int len
= TYPE_LENGTH (type
);
289 if (VALUE_LVAL (val
) == lval_memory
)
291 next_address
= VALUE_ADDRESS (val
) + len
;
292 next_section
= VALUE_BFD_SECTION (val
);
298 /* FIXME: Need to handle wchar_t's here... */
299 next_address
= VALUE_ADDRESS (val
)
300 + val_print_string (VALUE_ADDRESS (val
), -1, 1, stream
);
301 next_section
= VALUE_BFD_SECTION (val
);
305 /* The old comment says
306 "Force output out, print_insn not using _filtered".
307 I'm not completely sure what that means, I suspect most print_insn
308 now do use _filtered, so I guess it's obsolete.
309 --Yes, it does filter now, and so this is obsolete. -JB */
311 /* We often wrap here if there are long symbolic names. */
313 next_address
= VALUE_ADDRESS (val
)
314 + print_insn (VALUE_ADDRESS (val
), stream
);
315 next_section
= VALUE_BFD_SECTION (val
);
320 || TYPE_CODE (type
) == TYPE_CODE_ARRAY
321 || TYPE_CODE (type
) == TYPE_CODE_STRING
322 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
323 || TYPE_CODE (type
) == TYPE_CODE_UNION
)
324 /* If format is 0, use the 'natural' format for
325 * that type of value. If the type is non-scalar,
326 * we have to use language rules to print it as
327 * a series of scalars.
329 value_print (val
, stream
, format
, Val_pretty_default
);
331 /* User specified format, so don't look to the
332 * the type to tell us what to do.
334 print_scalar_formatted (VALUE_CONTENTS (val
), type
,
335 format
, size
, stream
);
339 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
340 according to letters FORMAT and SIZE on STREAM.
341 FORMAT may not be zero. Formats s and i are not supported at this level.
343 This is how the elements of an array or structure are printed
347 print_scalar_formatted (char *valaddr
, struct type
*type
, int format
, int size
,
348 struct ui_file
*stream
)
351 unsigned int len
= TYPE_LENGTH (type
);
353 if (len
> sizeof (LONGEST
)
361 if (!TYPE_UNSIGNED (type
)
362 || !extract_long_unsigned_integer (valaddr
, len
, &val_long
))
364 /* We can't print it normally, but we can print it in hex.
365 Printing it in the wrong radix is more useful than saying
366 "use /x, you dummy". */
367 /* FIXME: we could also do octal or binary if that was the
369 /* FIXME: we should be using the size field to give us a
370 minimum field width to print. */
373 print_octal_chars (stream
, valaddr
, len
);
374 else if (format
== 'd')
375 print_decimal_chars (stream
, valaddr
, len
);
376 else if (format
== 't')
377 print_binary_chars (stream
, valaddr
, len
);
379 /* replace with call to print_hex_chars? Looks
380 like val_print_type_code_int is redoing
383 val_print_type_code_int (type
, valaddr
, stream
);
388 /* If we get here, extract_long_unsigned_integer set val_long. */
390 else if (format
!= 'f')
391 val_long
= unpack_long (type
, valaddr
);
393 /* If we are printing it as unsigned, truncate it in case it is actually
394 a negative signed value (e.g. "print/u (short)-1" should print 65535
395 (if shorts are 16 bits) instead of 4294967295). */
398 if (len
< sizeof (LONGEST
))
399 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
407 /* no size specified, like in print. Print varying # of digits. */
408 print_longest (stream
, 'x', 1, val_long
);
417 print_longest (stream
, size
, 1, val_long
);
420 error ("Undefined output size \"%c\".", size
);
425 print_longest (stream
, 'd', 1, val_long
);
429 print_longest (stream
, 'u', 0, val_long
);
434 print_longest (stream
, 'o', 1, val_long
);
436 fprintf_filtered (stream
, "0");
441 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
442 print_address (addr
, stream
);
447 value_print (value_from_longest (builtin_type_true_char
, val_long
),
448 stream
, 0, Val_pretty_default
);
452 if (len
== sizeof (float))
453 type
= builtin_type_float
;
454 else if (len
== sizeof (double))
455 type
= builtin_type_double
;
456 print_floating (valaddr
, type
, stream
);
460 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
463 /* Binary; 't' stands for "two". */
465 char bits
[8 * (sizeof val_long
) + 1];
466 char buf
[8 * (sizeof val_long
) + 32];
471 width
= 8 * (sizeof val_long
);
488 error ("Undefined output size \"%c\".", size
);
494 bits
[width
] = (val_long
& 1) ? '1' : '0';
499 while (*cp
&& *cp
== '0')
504 strcpy (buf
, local_binary_format_prefix ());
506 strcat (buf
, local_binary_format_suffix ());
507 fprintf_filtered (stream
, buf
);
512 error ("Undefined output format \"%c\".", format
);
516 /* Specify default address for `x' command.
517 `info lines' uses this. */
520 set_next_address (CORE_ADDR addr
)
524 /* Make address available to the user as $_. */
525 set_internalvar (lookup_internalvar ("_"),
526 value_from_pointer (lookup_pointer_type (builtin_type_void
),
530 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
531 after LEADIN. Print nothing if no symbolic name is found nearby.
532 Optionally also print source file and line number, if available.
533 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
534 or to interpret it as a possible C++ name and convert it back to source
535 form. However note that DO_DEMANGLE can be overridden by the specific
536 settings of the demangle and asm_demangle variables. */
539 print_address_symbolic (CORE_ADDR addr
, struct ui_file
*stream
, int do_demangle
,
543 char *filename
= NULL
;
548 /* throw away both name and filename */
549 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
550 make_cleanup (free_current_contents
, &filename
);
552 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
, &filename
, &line
, &unmapped
))
554 do_cleanups (cleanup_chain
);
558 fputs_filtered (leadin
, stream
);
560 fputs_filtered ("<*", stream
);
562 fputs_filtered ("<", stream
);
563 fputs_filtered (name
, stream
);
565 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
567 /* Append source filename and line number if desired. Give specific
568 line # of this addr, if we have it; else line # of the nearest symbol. */
569 if (print_symbol_filename
&& filename
!= NULL
)
572 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
574 fprintf_filtered (stream
, " in %s", filename
);
577 fputs_filtered ("*>", stream
);
579 fputs_filtered (">", stream
);
581 do_cleanups (cleanup_chain
);
584 /* Given an address ADDR return all the elements needed to print the
585 address in a symbolic form. NAME can be mangled or not depending
586 on DO_DEMANGLE (and also on the asm_demangle global variable,
587 manipulated via ''set print asm-demangle''). Return 0 in case of
588 success, when all the info in the OUT paramters is valid. Return 1
591 build_address_symbolic (CORE_ADDR addr
, /* IN */
592 int do_demangle
, /* IN */
593 char **name
, /* OUT */
594 int *offset
, /* OUT */
595 char **filename
, /* OUT */
597 int *unmapped
) /* OUT */
599 struct minimal_symbol
*msymbol
;
600 struct symbol
*symbol
;
601 struct symtab
*symtab
= 0;
602 CORE_ADDR name_location
= 0;
603 asection
*section
= 0;
604 char *name_temp
= "";
606 /* Let's say it is unmapped. */
609 /* Determine if the address is in an overlay, and whether it is
611 if (overlay_debugging
)
613 section
= find_pc_overlay (addr
);
614 if (pc_in_unmapped_range (addr
, section
))
617 addr
= overlay_mapped_address (addr
, section
);
621 /* On some targets, add in extra "flag" bits to PC for
622 disassembly. This should ensure that "rounding errors" in
623 symbol addresses that are masked for disassembly favour the
624 the correct symbol. */
626 #ifdef GDB_TARGET_UNMASK_DISAS_PC
627 addr
= GDB_TARGET_UNMASK_DISAS_PC (addr
);
630 /* First try to find the address in the symbol table, then
631 in the minsyms. Take the closest one. */
633 /* This is defective in the sense that it only finds text symbols. So
634 really this is kind of pointless--we should make sure that the
635 minimal symbols have everything we need (by changing that we could
636 save some memory, but for many debug format--ELF/DWARF or
637 anything/stabs--it would be inconvenient to eliminate those minimal
639 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
640 symbol
= find_pc_sect_function (addr
, section
);
644 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
646 name_temp
= SYMBOL_SOURCE_NAME (symbol
);
648 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
653 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
655 /* The msymbol is closer to the address than the symbol;
656 use the msymbol instead. */
659 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
661 name_temp
= SYMBOL_SOURCE_NAME (msymbol
);
663 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
666 if (symbol
== NULL
&& msymbol
== NULL
)
669 /* On some targets, mask out extra "flag" bits from PC for handsome
672 #ifdef GDB_TARGET_MASK_DISAS_PC
673 name_location
= GDB_TARGET_MASK_DISAS_PC (name_location
);
674 addr
= GDB_TARGET_MASK_DISAS_PC (addr
);
677 /* If the nearest symbol is too far away, don't print anything symbolic. */
679 /* For when CORE_ADDR is larger than unsigned int, we do math in
680 CORE_ADDR. But when we detect unsigned wraparound in the
681 CORE_ADDR math, we ignore this test and print the offset,
682 because addr+max_symbolic_offset has wrapped through the end
683 of the address space back to the beginning, giving bogus comparison. */
684 if (addr
> name_location
+ max_symbolic_offset
685 && name_location
+ max_symbolic_offset
> name_location
)
688 *offset
= addr
- name_location
;
690 *name
= xstrdup (name_temp
);
692 if (print_symbol_filename
)
694 struct symtab_and_line sal
;
696 sal
= find_pc_sect_line (addr
, section
, 0);
700 *filename
= xstrdup (sal
.symtab
->filename
);
703 else if (symtab
&& symbol
&& symbol
->line
)
705 *filename
= xstrdup (symtab
->filename
);
706 *line
= symbol
->line
;
710 *filename
= xstrdup (symtab
->filename
);
717 /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
720 print_address_numeric (CORE_ADDR addr
, int use_local
, struct ui_file
*stream
)
722 /* Truncate address to the size of a target address, avoiding shifts
723 larger or equal than the width of a CORE_ADDR. The local
724 variable ADDR_BIT stops the compiler reporting a shift overflow
725 when it won't occur. */
726 /* NOTE: This assumes that the significant address information is
727 kept in the least significant bits of ADDR - the upper bits were
728 either zero or sign extended. Should ADDRESS_TO_POINTER() or
729 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
731 int addr_bit
= TARGET_ADDR_BIT
;
733 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
734 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
735 print_longest (stream
, 'x', use_local
, (ULONGEST
) addr
);
738 /* Print address ADDR symbolically on STREAM.
739 First print it as a number. Then perhaps print
740 <SYMBOL + OFFSET> after the number. */
743 print_address (CORE_ADDR addr
, struct ui_file
*stream
)
745 print_address_numeric (addr
, 1, stream
);
746 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
749 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
750 controls whether to print the symbolic name "raw" or demangled.
751 Global setting "addressprint" controls whether to print hex address
755 print_address_demangle (CORE_ADDR addr
, struct ui_file
*stream
, int do_demangle
)
759 fprintf_filtered (stream
, "0");
761 else if (addressprint
)
763 print_address_numeric (addr
, 1, stream
);
764 print_address_symbolic (addr
, stream
, do_demangle
, " ");
768 print_address_symbolic (addr
, stream
, do_demangle
, "");
773 /* These are the types that $__ will get after an examine command of one
776 static struct type
*examine_i_type
;
778 static struct type
*examine_b_type
;
779 static struct type
*examine_h_type
;
780 static struct type
*examine_w_type
;
781 static struct type
*examine_g_type
;
783 /* Examine data at address ADDR in format FMT.
784 Fetch it from memory and print on gdb_stdout. */
787 do_examine (struct format_data fmt
, CORE_ADDR addr
, asection
*sect
)
789 register char format
= 0;
791 register int count
= 1;
792 struct type
*val_type
= NULL
;
794 register int maxelts
;
802 /* String or instruction format implies fetch single bytes
803 regardless of the specified size. */
804 if (format
== 's' || format
== 'i')
808 val_type
= examine_i_type
;
809 else if (size
== 'b')
810 val_type
= examine_b_type
;
811 else if (size
== 'h')
812 val_type
= examine_h_type
;
813 else if (size
== 'w')
814 val_type
= examine_w_type
;
815 else if (size
== 'g')
816 val_type
= examine_g_type
;
823 if (format
== 's' || format
== 'i')
826 /* Print as many objects as specified in COUNT, at most maxelts per line,
827 with the address of the next one at the start of each line. */
832 print_address (next_address
, gdb_stdout
);
833 printf_filtered (":");
838 printf_filtered ("\t");
839 /* Note that print_formatted sets next_address for the next
841 last_examine_address
= next_address
;
843 if (last_examine_value
)
844 value_free (last_examine_value
);
846 /* The value to be displayed is not fetched greedily.
847 Instead, to avoid the posibility of a fetched value not
848 being used, its retreval is delayed until the print code
849 uses it. When examining an instruction stream, the
850 disassembler will perform its own memory fetch using just
851 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
852 the disassembler be modified so that LAST_EXAMINE_VALUE
853 is left with the byte sequence from the last complete
854 instruction fetched from memory? */
855 last_examine_value
= value_at_lazy (val_type
, next_address
, sect
);
857 if (last_examine_value
)
858 release_value (last_examine_value
);
860 print_formatted (last_examine_value
, format
, size
, gdb_stdout
);
862 printf_filtered ("\n");
863 gdb_flush (gdb_stdout
);
868 validate_format (struct format_data fmt
, char *cmdname
)
871 error ("Size letters are meaningless in \"%s\" command.", cmdname
);
873 error ("Item count other than 1 is meaningless in \"%s\" command.",
875 if (fmt
.format
== 'i' || fmt
.format
== 's')
876 error ("Format letter \"%c\" is meaningless in \"%s\" command.",
877 fmt
.format
, cmdname
);
880 /* Evaluate string EXP as an expression in the current language and
881 print the resulting value. EXP may contain a format specifier as the
882 first argument ("/x myvar" for example, to print myvar in hex).
886 print_command_1 (char *exp
, int inspect
, int voidprint
)
888 struct expression
*expr
;
889 register struct cleanup
*old_chain
= 0;
890 register char format
= 0;
891 register value_ptr val
;
892 struct format_data fmt
;
895 /* Pass inspect flag to the rest of the print routines in a global (sigh). */
896 inspect_it
= inspect
;
898 if (exp
&& *exp
== '/')
901 fmt
= decode_format (&exp
, last_format
, 0);
902 validate_format (fmt
, "print");
903 last_format
= format
= fmt
.format
;
915 expr
= parse_expression (exp
);
916 old_chain
= make_cleanup (free_current_contents
, &expr
);
918 val
= evaluate_expression (expr
);
920 /* C++: figure out what type we actually want to print it as. */
921 type
= VALUE_TYPE (val
);
924 && (TYPE_CODE (type
) == TYPE_CODE_PTR
925 || TYPE_CODE (type
) == TYPE_CODE_REF
)
926 && (TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_STRUCT
927 || TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_UNION
))
931 v
= value_from_vtable_info (val
, TYPE_TARGET_TYPE (type
));
935 type
= VALUE_TYPE (val
);
940 val
= access_value_history (0);
942 if (voidprint
|| (val
&& VALUE_TYPE (val
) &&
943 TYPE_CODE (VALUE_TYPE (val
)) != TYPE_CODE_VOID
))
945 int histindex
= record_latest_value (val
);
948 annotate_value_history_begin (histindex
, VALUE_TYPE (val
));
950 annotate_value_begin (VALUE_TYPE (val
));
953 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp
, histindex
);
954 else if (histindex
>= 0)
955 printf_filtered ("$%d = ", histindex
);
958 annotate_value_history_value ();
960 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
961 printf_filtered ("\n");
964 annotate_value_history_end ();
966 annotate_value_end ();
969 printf_unfiltered ("\") )\030");
973 do_cleanups (old_chain
);
974 inspect_it
= 0; /* Reset print routines to normal */
979 print_command (char *exp
, int from_tty
)
981 print_command_1 (exp
, 0, 1);
984 /* Same as print, except in epoch, it gets its own window */
987 inspect_command (char *exp
, int from_tty
)
989 extern int epoch_interface
;
991 print_command_1 (exp
, epoch_interface
, 1);
994 /* Same as print, except it doesn't print void results. */
997 call_command (char *exp
, int from_tty
)
999 print_command_1 (exp
, 0, 0);
1004 output_command (char *exp
, int from_tty
)
1006 struct expression
*expr
;
1007 register struct cleanup
*old_chain
;
1008 register char format
= 0;
1009 register value_ptr val
;
1010 struct format_data fmt
;
1012 if (exp
&& *exp
== '/')
1015 fmt
= decode_format (&exp
, 0, 0);
1016 validate_format (fmt
, "output");
1017 format
= fmt
.format
;
1020 expr
= parse_expression (exp
);
1021 old_chain
= make_cleanup (free_current_contents
, &expr
);
1023 val
= evaluate_expression (expr
);
1025 annotate_value_begin (VALUE_TYPE (val
));
1027 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
1029 annotate_value_end ();
1032 gdb_flush (gdb_stdout
);
1034 do_cleanups (old_chain
);
1039 set_command (char *exp
, int from_tty
)
1041 struct expression
*expr
= parse_expression (exp
);
1042 register struct cleanup
*old_chain
=
1043 make_cleanup (free_current_contents
, &expr
);
1044 evaluate_expression (expr
);
1045 do_cleanups (old_chain
);
1050 sym_info (char *arg
, int from_tty
)
1052 struct minimal_symbol
*msymbol
;
1053 struct objfile
*objfile
;
1054 struct obj_section
*osect
;
1056 CORE_ADDR addr
, sect_addr
;
1058 unsigned int offset
;
1061 error_no_arg ("address");
1063 addr
= parse_and_eval_address (arg
);
1064 ALL_OBJSECTIONS (objfile
, osect
)
1066 sect
= osect
->the_bfd_section
;
1067 sect_addr
= overlay_mapped_address (addr
, sect
);
1069 if (osect
->addr
<= sect_addr
&& sect_addr
< osect
->endaddr
&&
1070 (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, sect
)))
1073 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1075 printf_filtered ("%s + %u in ",
1076 SYMBOL_SOURCE_NAME (msymbol
), offset
);
1078 printf_filtered ("%s in ",
1079 SYMBOL_SOURCE_NAME (msymbol
));
1080 if (pc_in_unmapped_range (addr
, sect
))
1081 printf_filtered ("load address range of ");
1082 if (section_is_overlay (sect
))
1083 printf_filtered ("%s overlay ",
1084 section_is_mapped (sect
) ? "mapped" : "unmapped");
1085 printf_filtered ("section %s", sect
->name
);
1086 printf_filtered ("\n");
1090 printf_filtered ("No symbol matches %s.\n", arg
);
1095 address_info (char *exp
, int from_tty
)
1097 register struct symbol
*sym
;
1098 register struct minimal_symbol
*msymbol
;
1100 register long basereg
;
1102 CORE_ADDR load_addr
;
1103 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1104 if exp is a field of `this'. */
1107 error ("Argument required.");
1109 sym
= lookup_symbol (exp
, get_selected_block (), VAR_NAMESPACE
,
1110 &is_a_field_of_this
, (struct symtab
**) NULL
);
1113 if (is_a_field_of_this
)
1115 printf_filtered ("Symbol \"");
1116 fprintf_symbol_filtered (gdb_stdout
, exp
,
1117 current_language
->la_language
, DMGL_ANSI
);
1118 printf_filtered ("\" is a field of the local class variable `this'\n");
1122 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1124 if (msymbol
!= NULL
)
1126 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1128 printf_filtered ("Symbol \"");
1129 fprintf_symbol_filtered (gdb_stdout
, exp
,
1130 current_language
->la_language
, DMGL_ANSI
);
1131 printf_filtered ("\" is at ");
1132 print_address_numeric (load_addr
, 1, gdb_stdout
);
1133 printf_filtered (" in a file compiled without debugging");
1134 section
= SYMBOL_BFD_SECTION (msymbol
);
1135 if (section_is_overlay (section
))
1137 load_addr
= overlay_unmapped_address (load_addr
, section
);
1138 printf_filtered (",\n -- loaded at ");
1139 print_address_numeric (load_addr
, 1, gdb_stdout
);
1140 printf_filtered (" in overlay section %s", section
->name
);
1142 printf_filtered (".\n");
1145 error ("No symbol \"%s\" in current context.", exp
);
1149 printf_filtered ("Symbol \"");
1150 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_NAME (sym
),
1151 current_language
->la_language
, DMGL_ANSI
);
1152 printf_filtered ("\" is ");
1153 val
= SYMBOL_VALUE (sym
);
1154 basereg
= SYMBOL_BASEREG (sym
);
1155 section
= SYMBOL_BFD_SECTION (sym
);
1157 switch (SYMBOL_CLASS (sym
))
1160 case LOC_CONST_BYTES
:
1161 printf_filtered ("constant");
1165 printf_filtered ("a label at address ");
1166 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1168 if (section_is_overlay (section
))
1170 load_addr
= overlay_unmapped_address (load_addr
, section
);
1171 printf_filtered (",\n -- loaded at ");
1172 print_address_numeric (load_addr
, 1, gdb_stdout
);
1173 printf_filtered (" in overlay section %s", section
->name
);
1178 printf_filtered ("a variable in register %s", REGISTER_NAME (val
));
1182 printf_filtered ("static storage at address ");
1183 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1185 if (section_is_overlay (section
))
1187 load_addr
= overlay_unmapped_address (load_addr
, section
);
1188 printf_filtered (",\n -- loaded at ");
1189 print_address_numeric (load_addr
, 1, gdb_stdout
);
1190 printf_filtered (" in overlay section %s", section
->name
);
1195 printf_filtered ("external global (indirect addressing), at address *(");
1196 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1198 printf_filtered (")");
1199 if (section_is_overlay (section
))
1201 load_addr
= overlay_unmapped_address (load_addr
, section
);
1202 printf_filtered (",\n -- loaded at ");
1203 print_address_numeric (load_addr
, 1, gdb_stdout
);
1204 printf_filtered (" in overlay section %s", section
->name
);
1209 printf_filtered ("an argument in register %s", REGISTER_NAME (val
));
1212 case LOC_REGPARM_ADDR
:
1213 printf_filtered ("address of an argument in register %s", REGISTER_NAME (val
));
1217 printf_filtered ("an argument at offset %ld", val
);
1221 printf_filtered ("an argument at frame offset %ld", val
);
1225 printf_filtered ("a local variable at frame offset %ld", val
);
1229 printf_filtered ("a reference argument at offset %ld", val
);
1233 printf_filtered ("a variable at offset %ld from register %s",
1234 val
, REGISTER_NAME (basereg
));
1237 case LOC_BASEREG_ARG
:
1238 printf_filtered ("an argument at offset %ld from register %s",
1239 val
, REGISTER_NAME (basereg
));
1243 printf_filtered ("a typedef");
1247 printf_filtered ("a function at address ");
1248 #ifdef GDB_TARGET_MASK_DISAS_PC
1249 print_address_numeric
1250 (load_addr
= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))),
1253 print_address_numeric (load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
1256 if (section_is_overlay (section
))
1258 load_addr
= overlay_unmapped_address (load_addr
, section
);
1259 printf_filtered (",\n -- loaded at ");
1260 print_address_numeric (load_addr
, 1, gdb_stdout
);
1261 printf_filtered (" in overlay section %s", section
->name
);
1265 case LOC_UNRESOLVED
:
1267 struct minimal_symbol
*msym
;
1269 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, NULL
);
1271 printf_filtered ("unresolved");
1274 section
= SYMBOL_BFD_SECTION (msym
);
1275 printf_filtered ("static storage at address ");
1276 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (msym
),
1278 if (section_is_overlay (section
))
1280 load_addr
= overlay_unmapped_address (load_addr
, section
);
1281 printf_filtered (",\n -- loaded at ");
1282 print_address_numeric (load_addr
, 1, gdb_stdout
);
1283 printf_filtered (" in overlay section %s", section
->name
);
1289 case LOC_THREAD_LOCAL_STATIC
:
1291 "a thread-local variable at offset %ld from the thread base register %s",
1292 val
, REGISTER_NAME (basereg
));
1295 case LOC_OPTIMIZED_OUT
:
1296 printf_filtered ("optimized out");
1300 printf_filtered ("of unknown (botched) type");
1303 printf_filtered (".\n");
1307 x_command (char *exp
, int from_tty
)
1309 struct expression
*expr
;
1310 struct format_data fmt
;
1311 struct cleanup
*old_chain
;
1314 fmt
.format
= last_format
;
1315 fmt
.size
= last_size
;
1318 if (exp
&& *exp
== '/')
1321 fmt
= decode_format (&exp
, last_format
, last_size
);
1324 /* If we have an expression, evaluate it and use it as the address. */
1326 if (exp
!= 0 && *exp
!= 0)
1328 expr
= parse_expression (exp
);
1329 /* Cause expression not to be there any more
1330 if this command is repeated with Newline.
1331 But don't clobber a user-defined command's definition. */
1334 old_chain
= make_cleanup (free_current_contents
, &expr
);
1335 val
= evaluate_expression (expr
);
1336 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_REF
)
1337 val
= value_ind (val
);
1338 /* In rvalue contexts, such as this, functions are coerced into
1339 pointers to functions. This makes "x/i main" work. */
1340 if (/* last_format == 'i' && */
1341 TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_FUNC
1342 && VALUE_LVAL (val
) == lval_memory
)
1343 next_address
= VALUE_ADDRESS (val
);
1345 next_address
= value_as_pointer (val
);
1346 if (VALUE_BFD_SECTION (val
))
1347 next_section
= VALUE_BFD_SECTION (val
);
1348 do_cleanups (old_chain
);
1351 do_examine (fmt
, next_address
, next_section
);
1353 /* If the examine succeeds, we remember its size and format for next time. */
1354 last_size
= fmt
.size
;
1355 last_format
= fmt
.format
;
1357 /* Set a couple of internal variables if appropriate. */
1358 if (last_examine_value
)
1360 /* Make last address examined available to the user as $_. Use
1361 the correct pointer type. */
1362 struct type
*pointer_type
1363 = lookup_pointer_type (VALUE_TYPE (last_examine_value
));
1364 set_internalvar (lookup_internalvar ("_"),
1365 value_from_pointer (pointer_type
,
1366 last_examine_address
));
1368 /* Make contents of last address examined available to the user as $__. */
1369 /* If the last value has not been fetched from memory then don't
1370 fetch it now - instead mark it by voiding the $__ variable. */
1371 if (VALUE_LAZY (last_examine_value
))
1372 set_internalvar (lookup_internalvar ("__"),
1373 allocate_value (builtin_type_void
));
1375 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1380 /* Add an expression to the auto-display chain.
1381 Specify the expression. */
1384 display_command (char *exp
, int from_tty
)
1386 struct format_data fmt
;
1387 register struct expression
*expr
;
1388 register struct display
*new;
1392 if (tui_version
&& *exp
== '$')
1393 display_it
= ((TuiStatus
) tuiDo (
1394 (TuiOpaqueFuncPtr
) tui_vSetLayoutTo
, exp
) == TUI_FAILURE
);
1408 fmt
= decode_format (&exp
, 0, 0);
1409 if (fmt
.size
&& fmt
.format
== 0)
1411 if (fmt
.format
== 'i' || fmt
.format
== 's')
1421 innermost_block
= 0;
1422 expr
= parse_expression (exp
);
1424 new = (struct display
*) xmalloc (sizeof (struct display
));
1427 new->block
= innermost_block
;
1428 new->next
= display_chain
;
1429 new->number
= ++display_number
;
1431 new->status
= enabled
;
1432 display_chain
= new;
1434 if (from_tty
&& target_has_execution
)
1435 do_one_display (new);
1442 free_display (struct display
*d
)
1448 /* Clear out the display_chain.
1449 Done when new symtabs are loaded, since this invalidates
1450 the types stored in many expressions. */
1453 clear_displays (void)
1455 register struct display
*d
;
1457 while ((d
= display_chain
) != NULL
)
1460 display_chain
= d
->next
;
1465 /* Delete the auto-display number NUM. */
1468 delete_display (int num
)
1470 register struct display
*d1
, *d
;
1473 error ("No display number %d.", num
);
1475 if (display_chain
->number
== num
)
1478 display_chain
= d1
->next
;
1482 for (d
= display_chain
;; d
= d
->next
)
1485 error ("No display number %d.", num
);
1486 if (d
->next
->number
== num
)
1496 /* Delete some values from the auto-display chain.
1497 Specify the element numbers. */
1500 undisplay_command (char *args
, int from_tty
)
1502 register char *p
= args
;
1508 if (query ("Delete all auto-display expressions? "))
1517 while (*p1
>= '0' && *p1
<= '9')
1519 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1520 error ("Arguments must be display numbers.");
1524 delete_display (num
);
1527 while (*p
== ' ' || *p
== '\t')
1533 /* Display a single auto-display.
1534 Do nothing if the display cannot be printed in the current context,
1535 or if the display is disabled. */
1538 do_one_display (struct display
*d
)
1540 int within_current_scope
;
1542 if (d
->status
== disabled
)
1546 within_current_scope
= contained_in (get_selected_block (), d
->block
);
1548 within_current_scope
= 1;
1549 if (!within_current_scope
)
1552 current_display_number
= d
->number
;
1554 annotate_display_begin ();
1555 printf_filtered ("%d", d
->number
);
1556 annotate_display_number_end ();
1557 printf_filtered (": ");
1563 annotate_display_format ();
1565 printf_filtered ("x/");
1566 if (d
->format
.count
!= 1)
1567 printf_filtered ("%d", d
->format
.count
);
1568 printf_filtered ("%c", d
->format
.format
);
1569 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1570 printf_filtered ("%c", d
->format
.size
);
1571 printf_filtered (" ");
1573 annotate_display_expression ();
1575 print_expression (d
->exp
, gdb_stdout
);
1576 annotate_display_expression_end ();
1578 if (d
->format
.count
!= 1)
1579 printf_filtered ("\n");
1581 printf_filtered (" ");
1583 val
= evaluate_expression (d
->exp
);
1584 addr
= value_as_pointer (val
);
1585 if (d
->format
.format
== 'i')
1586 addr
= ADDR_BITS_REMOVE (addr
);
1588 annotate_display_value ();
1590 do_examine (d
->format
, addr
, VALUE_BFD_SECTION (val
));
1594 annotate_display_format ();
1596 if (d
->format
.format
)
1597 printf_filtered ("/%c ", d
->format
.format
);
1599 annotate_display_expression ();
1601 print_expression (d
->exp
, gdb_stdout
);
1602 annotate_display_expression_end ();
1604 printf_filtered (" = ");
1606 annotate_display_expression ();
1608 print_formatted (evaluate_expression (d
->exp
),
1609 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1610 printf_filtered ("\n");
1613 annotate_display_end ();
1615 gdb_flush (gdb_stdout
);
1616 current_display_number
= -1;
1619 /* Display all of the values on the auto-display chain which can be
1620 evaluated in the current scope. */
1625 register struct display
*d
;
1627 for (d
= display_chain
; d
; d
= d
->next
)
1631 /* Delete the auto-display which we were in the process of displaying.
1632 This is done when there is an error or a signal. */
1635 disable_display (int num
)
1637 register struct display
*d
;
1639 for (d
= display_chain
; d
; d
= d
->next
)
1640 if (d
->number
== num
)
1642 d
->status
= disabled
;
1645 printf_unfiltered ("No display number %d.\n", num
);
1649 disable_current_display (void)
1651 if (current_display_number
>= 0)
1653 disable_display (current_display_number
);
1654 fprintf_unfiltered (gdb_stderr
, "Disabling display %d to avoid infinite recursion.\n",
1655 current_display_number
);
1657 current_display_number
= -1;
1661 display_info (char *ignore
, int from_tty
)
1663 register struct display
*d
;
1666 printf_unfiltered ("There are no auto-display expressions now.\n");
1668 printf_filtered ("Auto-display expressions now in effect:\n\
1669 Num Enb Expression\n");
1671 for (d
= display_chain
; d
; d
= d
->next
)
1673 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->status
]);
1675 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1677 else if (d
->format
.format
)
1678 printf_filtered ("/%c ", d
->format
.format
);
1679 print_expression (d
->exp
, gdb_stdout
);
1680 if (d
->block
&& !contained_in (get_selected_block (), d
->block
))
1681 printf_filtered (" (cannot be evaluated in the current context)");
1682 printf_filtered ("\n");
1683 gdb_flush (gdb_stdout
);
1688 enable_display (char *args
, int from_tty
)
1690 register char *p
= args
;
1693 register struct display
*d
;
1697 for (d
= display_chain
; d
; d
= d
->next
)
1698 d
->status
= enabled
;
1704 while (*p1
>= '0' && *p1
<= '9')
1706 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1707 error ("Arguments must be display numbers.");
1711 for (d
= display_chain
; d
; d
= d
->next
)
1712 if (d
->number
== num
)
1714 d
->status
= enabled
;
1717 printf_unfiltered ("No display number %d.\n", num
);
1720 while (*p
== ' ' || *p
== '\t')
1727 disable_display_command (char *args
, int from_tty
)
1729 register char *p
= args
;
1731 register struct display
*d
;
1735 for (d
= display_chain
; d
; d
= d
->next
)
1736 d
->status
= disabled
;
1742 while (*p1
>= '0' && *p1
<= '9')
1744 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1745 error ("Arguments must be display numbers.");
1747 disable_display (atoi (p
));
1750 while (*p
== ' ' || *p
== '\t')
1756 /* Print the value in stack frame FRAME of a variable
1757 specified by a struct symbol. */
1760 print_variable_value (struct symbol
*var
, struct frame_info
*frame
,
1761 struct ui_file
*stream
)
1763 value_ptr val
= read_var_value (var
, frame
);
1765 value_print (val
, stream
, 0, Val_pretty_default
);
1768 /* Print the arguments of a stack frame, given the function FUNC
1769 running in that frame (as a symbol), the info on the frame,
1770 and the number of args according to the stack frame (or -1 if unknown). */
1772 /* References here and elsewhere to "number of args according to the
1773 stack frame" appear in all cases to refer to "number of ints of args
1774 according to the stack frame". At least for VAX, i386, isi. */
1777 print_frame_args (struct symbol
*func
, struct frame_info
*fi
, int num
,
1778 struct ui_file
*stream
)
1780 struct block
*b
= NULL
;
1784 register struct symbol
*sym
;
1785 register value_ptr val
;
1786 /* Offset of next stack argument beyond the one we have seen that is
1787 at the highest offset.
1788 -1 if we haven't come to a stack argument yet. */
1789 long highest_offset
= -1;
1791 /* Number of ints of arguments that we have printed so far. */
1792 int args_printed
= 0;
1794 struct cleanup
*old_chain
, *list_chain
;
1795 struct ui_stream
*stb
;
1797 stb
= ui_out_stream_new (uiout
);
1798 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1803 b
= SYMBOL_BLOCK_VALUE (func
);
1804 nsyms
= BLOCK_NSYMS (b
);
1807 for (i
= 0; i
< nsyms
; i
++)
1810 sym
= BLOCK_SYM (b
, i
);
1812 /* Keep track of the highest stack argument offset seen, and
1813 skip over any kinds of symbols we don't care about. */
1815 switch (SYMBOL_CLASS (sym
))
1820 long current_offset
= SYMBOL_VALUE (sym
);
1821 arg_size
= TYPE_LENGTH (SYMBOL_TYPE (sym
));
1823 /* Compute address of next argument by adding the size of
1824 this argument and rounding to an int boundary. */
1826 ((current_offset
+ arg_size
+ sizeof (int) - 1)
1827 & ~(sizeof (int) - 1));
1829 /* If this is the highest offset seen yet, set highest_offset. */
1830 if (highest_offset
== -1
1831 || (current_offset
> highest_offset
))
1832 highest_offset
= current_offset
;
1834 /* Add the number of ints we're about to print to args_printed. */
1835 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
1838 /* We care about types of symbols, but don't need to keep track of
1839 stack offsets in them. */
1841 case LOC_REGPARM_ADDR
:
1843 case LOC_BASEREG_ARG
:
1846 /* Other types of symbols we just skip over. */
1851 /* We have to look up the symbol because arguments can have
1852 two entries (one a parameter, one a local) and the one we
1853 want is the local, which lookup_symbol will find for us.
1854 This includes gcc1 (not gcc2) on the sparc when passing a
1855 small structure and gcc2 when the argument type is float
1856 and it is passed as a double and converted to float by
1857 the prologue (in the latter case the type of the LOC_ARG
1858 symbol is double and the type of the LOC_LOCAL symbol is
1860 /* But if the parameter name is null, don't try it.
1861 Null parameter names occur on the RS/6000, for traceback tables.
1862 FIXME, should we even print them? */
1864 if (*SYMBOL_NAME (sym
))
1866 struct symbol
*nsym
;
1867 nsym
= lookup_symbol
1869 b
, VAR_NAMESPACE
, (int *) NULL
, (struct symtab
**) NULL
);
1870 if (SYMBOL_CLASS (nsym
) == LOC_REGISTER
)
1872 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1873 it was passed on the stack and loaded into a register,
1874 or passed in a register and stored in a stack slot.
1875 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1877 Reasons for using the LOC_ARG:
1878 (1) because find_saved_registers may be slow for remote
1880 (2) because registers are often re-used and stack slots
1881 rarely (never?) are. Therefore using the stack slot is
1882 much less likely to print garbage.
1884 Reasons why we might want to use the LOC_REGISTER:
1885 (1) So that the backtrace prints the same value as
1886 "print foo". I see no compelling reason why this needs
1887 to be the case; having the backtrace print the value which
1888 was passed in, and "print foo" print the value as modified
1889 within the called function, makes perfect sense to me.
1891 Additional note: It might be nice if "info args" displayed
1893 One more note: There is a case with sparc structure passing
1894 where we need to use the LOC_REGISTER, but this is dealt with
1895 by creating a single LOC_REGPARM in symbol reading. */
1897 /* Leave sym (the LOC_ARG) alone. */
1905 /* Print the current arg. */
1907 ui_out_text (uiout
, ", ");
1908 ui_out_wrap_hint (uiout
, " ");
1910 annotate_arg_begin ();
1912 list_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, NULL
);
1913 fprintf_symbol_filtered (stb
->stream
, SYMBOL_SOURCE_NAME (sym
),
1914 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1915 ui_out_field_stream (uiout
, "name", stb
);
1916 annotate_arg_name_end ();
1917 ui_out_text (uiout
, "=");
1919 /* Print the current arg. */
1921 fprintf_filtered (stream
, ", ");
1924 annotate_arg_begin ();
1926 fprintf_symbol_filtered (stream
, SYMBOL_SOURCE_NAME (sym
),
1927 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1928 annotate_arg_name_end ();
1929 fputs_filtered ("=", stream
);
1932 /* Avoid value_print because it will deref ref parameters. We just
1933 want to print their addresses. Print ??? for args whose address
1934 we do not know. We pass 2 as "recurse" to val_print because our
1935 standard indentation here is 4 spaces, and val_print indents
1936 2 for each recurse. */
1937 val
= read_var_value (sym
, fi
);
1939 annotate_arg_value (val
== NULL
? NULL
: VALUE_TYPE (val
));
1943 if (GDB_TARGET_IS_D10V
1944 && SYMBOL_CLASS (sym
) == LOC_REGPARM
&& TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_PTR
)
1945 TYPE_LENGTH (VALUE_TYPE (val
)) = 2;
1947 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
1948 VALUE_ADDRESS (val
),
1949 stb
->stream
, 0, 0, 2, Val_no_prettyprint
);
1950 ui_out_field_stream (uiout
, "value", stb
);
1953 ui_out_text (uiout
, "???");
1955 /* Invoke ui_out_tuple_end. */
1956 do_cleanups (list_chain
);
1958 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
1959 VALUE_ADDRESS (val
),
1960 stream
, 0, 0, 2, Val_no_prettyprint
);
1963 fputs_filtered ("???", stream
);
1966 annotate_arg_end ();
1971 /* Don't print nameless args in situations where we don't know
1972 enough about the stack to find them. */
1977 if (highest_offset
== -1)
1978 start
= FRAME_ARGS_SKIP
;
1980 start
= highest_offset
;
1982 print_frame_nameless_args (fi
, start
, num
- args_printed
,
1986 do_cleanups (old_chain
);
1987 #endif /* no UI_OUT */
1990 /* Print nameless args on STREAM.
1991 FI is the frameinfo for this frame, START is the offset
1992 of the first nameless arg, and NUM is the number of nameless args to
1993 print. FIRST is nonzero if this is the first argument (not just
1994 the first nameless arg). */
1997 print_frame_nameless_args (struct frame_info
*fi
, long start
, int num
,
1998 int first
, struct ui_file
*stream
)
2004 for (i
= 0; i
< num
; i
++)
2007 #ifdef NAMELESS_ARG_VALUE
2008 NAMELESS_ARG_VALUE (fi
, start
, &arg_value
);
2010 argsaddr
= FRAME_ARGS_ADDRESS (fi
);
2014 arg_value
= read_memory_integer (argsaddr
+ start
, sizeof (int));
2018 fprintf_filtered (stream
, ", ");
2020 #ifdef PRINT_NAMELESS_INTEGER
2021 PRINT_NAMELESS_INTEGER (stream
, arg_value
);
2023 #ifdef PRINT_TYPELESS_INTEGER
2024 PRINT_TYPELESS_INTEGER (stream
, builtin_type_int
, (LONGEST
) arg_value
);
2026 fprintf_filtered (stream
, "%ld", arg_value
);
2027 #endif /* PRINT_TYPELESS_INTEGER */
2028 #endif /* PRINT_NAMELESS_INTEGER */
2030 start
+= sizeof (int);
2036 printf_command (char *arg
, int from_tty
)
2038 register char *f
= NULL
;
2039 register char *s
= arg
;
2040 char *string
= NULL
;
2041 value_ptr
*val_args
;
2043 char *current_substring
;
2045 int allocated_args
= 20;
2046 struct cleanup
*old_cleanups
;
2048 val_args
= (value_ptr
*) xmalloc (allocated_args
* sizeof (value_ptr
));
2049 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
2052 error_no_arg ("format-control string and values to print");
2054 /* Skip white space before format string */
2055 while (*s
== ' ' || *s
== '\t')
2058 /* A format string should follow, enveloped in double quotes */
2060 error ("Bad format string, missing '\"'.");
2062 /* Parse the format-control string and copy it into the string STRING,
2063 processing some kinds of escape sequence. */
2065 f
= string
= (char *) alloca (strlen (s
) + 1);
2073 error ("Bad format string, non-terminated '\"'.");
2106 /* ??? TODO: handle other escape sequences */
2107 error ("Unrecognized escape character \\%c in format string.",
2117 /* Skip over " and following space and comma. */
2120 while (*s
== ' ' || *s
== '\t')
2123 if (*s
!= ',' && *s
!= 0)
2124 error ("Invalid argument syntax");
2128 while (*s
== ' ' || *s
== '\t')
2131 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2132 substrings
= alloca (strlen (string
) * 2);
2133 current_substring
= substrings
;
2136 /* Now scan the string for %-specs and see what kinds of args they want.
2137 argclass[I] classifies the %-specs so we can give printf_filtered
2138 something of the right size. */
2142 no_arg
, int_arg
, string_arg
, double_arg
, long_long_arg
2144 enum argclass
*argclass
;
2145 enum argclass this_argclass
;
2151 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
2159 while (strchr ("0123456789.hlL-+ #", *f
))
2161 if (*f
== 'l' || *f
== 'L')
2168 this_argclass
= string_arg
;
2174 this_argclass
= double_arg
;
2178 error ("`*' not supported for precision or width in printf");
2181 error ("Format specifier `n' not supported in printf");
2184 this_argclass
= no_arg
;
2189 this_argclass
= long_long_arg
;
2191 this_argclass
= int_arg
;
2195 if (this_argclass
!= no_arg
)
2197 strncpy (current_substring
, last_arg
, f
- last_arg
);
2198 current_substring
+= f
- last_arg
;
2199 *current_substring
++ = '\0';
2201 argclass
[nargs_wanted
++] = this_argclass
;
2205 /* Now, parse all arguments and evaluate them.
2206 Store the VALUEs in VAL_ARGS. */
2211 if (nargs
== allocated_args
)
2212 val_args
= (value_ptr
*) xrealloc ((char *) val_args
,
2213 (allocated_args
*= 2)
2214 * sizeof (value_ptr
));
2216 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2218 /* If format string wants a float, unchecked-convert the value to
2219 floating point of the same size */
2221 if (argclass
[nargs
] == double_arg
)
2223 struct type
*type
= VALUE_TYPE (val_args
[nargs
]);
2224 if (TYPE_LENGTH (type
) == sizeof (float))
2225 VALUE_TYPE (val_args
[nargs
]) = builtin_type_float
;
2226 if (TYPE_LENGTH (type
) == sizeof (double))
2227 VALUE_TYPE (val_args
[nargs
]) = builtin_type_double
;
2235 if (nargs
!= nargs_wanted
)
2236 error ("Wrong number of arguments for specified format-string");
2238 /* Now actually print them. */
2239 current_substring
= substrings
;
2240 for (i
= 0; i
< nargs
; i
++)
2242 switch (argclass
[i
])
2249 tem
= value_as_pointer (val_args
[i
]);
2251 /* This is a %s argument. Find the length of the string. */
2256 read_memory (tem
+ j
, &c
, 1);
2261 /* Copy the string contents into a string inside GDB. */
2262 str
= (char *) alloca (j
+ 1);
2264 read_memory (tem
, str
, j
);
2267 printf_filtered (current_substring
, str
);
2272 double val
= value_as_double (val_args
[i
]);
2273 printf_filtered (current_substring
, val
);
2277 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2279 long long val
= value_as_long (val_args
[i
]);
2280 printf_filtered (current_substring
, val
);
2284 error ("long long not supported in printf");
2288 /* FIXME: there should be separate int_arg and long_arg. */
2289 long val
= value_as_long (val_args
[i
]);
2290 printf_filtered (current_substring
, val
);
2293 default: /* purecov: deadcode */
2294 error ("internal error in printf_command"); /* purecov: deadcode */
2296 /* Skip to the next substring. */
2297 current_substring
+= strlen (current_substring
) + 1;
2299 /* Print the portion of the format string after the last argument. */
2300 printf_filtered (last_arg
);
2302 do_cleanups (old_cleanups
);
2305 /* Dump a specified section of assembly code. With no command line
2306 arguments, this command will dump the assembly code for the
2307 function surrounding the pc value in the selected frame. With one
2308 argument, it will dump the assembly code surrounding that pc value.
2309 Two arguments are interpeted as bounds within which to dump
2314 disassemble_command (char *arg
, int from_tty
)
2316 CORE_ADDR low
, high
;
2318 CORE_ADDR pc
, pc_masked
;
2327 if (!selected_frame
)
2328 error ("No frame selected.\n");
2330 pc
= get_frame_pc (selected_frame
);
2331 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2332 error ("No function contains program counter for selected frame.\n");
2334 else if (tui_version
)
2335 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2339 low
+= FUNCTION_START_OFFSET
;
2341 else if (!(space_index
= (char *) strchr (arg
, ' ')))
2344 pc
= parse_and_eval_address (arg
);
2345 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2346 error ("No function contains specified address.\n");
2348 else if (tui_version
)
2349 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2354 if (overlay_debugging
)
2356 section
= find_pc_overlay (pc
);
2357 if (pc_in_unmapped_range (pc
, section
))
2359 /* find_pc_partial_function will have returned low and high
2360 relative to the symbolic (mapped) address range. Need to
2361 translate them back to the unmapped range where PC is. */
2362 low
= overlay_unmapped_address (low
, section
);
2363 high
= overlay_unmapped_address (high
, section
);
2367 low
+= FUNCTION_START_OFFSET
;
2371 /* Two arguments. */
2372 *space_index
= '\0';
2373 low
= parse_and_eval_address (arg
);
2374 high
= parse_and_eval_address (space_index
+ 1);
2379 m_winPtrIsNull (disassemWin
) || !disassemWin
->generic
.isVisible
)
2382 printf_filtered ("Dump of assembler code ");
2385 printf_filtered ("for function %s:\n", name
);
2389 printf_filtered ("from ");
2390 print_address_numeric (low
, 1, gdb_stdout
);
2391 printf_filtered (" to ");
2392 print_address_numeric (high
, 1, gdb_stdout
);
2393 printf_filtered (":\n");
2396 /* Dump the specified range. */
2399 #ifdef GDB_TARGET_MASK_DISAS_PC
2400 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2405 while (pc_masked
< high
)
2408 print_address (pc_masked
, gdb_stdout
);
2409 printf_filtered (":\t");
2410 /* We often wrap here if there are long symbolic names. */
2412 pc
+= print_insn (pc
, gdb_stdout
);
2413 printf_filtered ("\n");
2415 #ifdef GDB_TARGET_MASK_DISAS_PC
2416 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2421 printf_filtered ("End of assembler dump.\n");
2422 gdb_flush (gdb_stdout
);
2427 tuiDo ((TuiOpaqueFuncPtr
) tui_vAddWinToLayout
, DISASSEM_WIN
);
2428 tuiDo ((TuiOpaqueFuncPtr
) tui_vUpdateSourceWindowsWithAddr
, low
);
2433 /* Print the instruction at address MEMADDR in debugged memory,
2434 on STREAM. Returns length of the instruction, in bytes. */
2437 print_insn (CORE_ADDR memaddr
, struct ui_file
*stream
)
2439 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2440 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_BIG
;
2442 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_LITTLE
;
2444 if (TARGET_ARCHITECTURE
!= NULL
)
2445 TARGET_PRINT_INSN_INFO
->mach
= TARGET_ARCHITECTURE
->mach
;
2446 /* else: should set .mach=0 but some disassemblers don't grok this */
2448 return TARGET_PRINT_INSN (memaddr
, TARGET_PRINT_INSN_INFO
);
2453 _initialize_printcmd (void)
2455 struct cmd_list_element
*c
;
2457 current_display_number
= -1;
2459 add_info ("address", address_info
,
2460 "Describe where symbol SYM is stored.");
2462 add_info ("symbol", sym_info
,
2463 "Describe what symbol is at location ADDR.\n\
2464 Only for symbols with fixed locations (global or static scope).");
2466 add_com ("x", class_vars
, x_command
,
2467 concat ("Examine memory: x/FMT ADDRESS.\n\
2468 ADDRESS is an expression for the memory address to examine.\n\
2469 FMT is a repeat count followed by a format letter and a size letter.\n\
2470 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2471 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
2472 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2473 The specified number of objects of the specified size are printed\n\
2474 according to the format.\n\n\
2475 Defaults for format and size letters are those previously used.\n\
2476 Default count is 1. Default address is following last thing printed\n\
2477 with this command or \"print\".", NULL
));
2479 c
= add_com ("disassemble", class_vars
, disassemble_command
,
2480 "Disassemble a specified section of memory.\n\
2481 Default is the function surrounding the pc of the selected frame.\n\
2482 With a single argument, the function surrounding that address is dumped.\n\
2483 Two arguments are taken as a range of memory to dump.");
2484 c
->completer
= location_completer
;
2486 add_com_alias ("va", "disassemble", class_xdb
, 0);
2489 add_com ("whereis", class_vars
, whereis_command
,
2490 "Print line number and file of definition of variable.");
2493 add_info ("display", display_info
,
2494 "Expressions to display when program stops, with code numbers.");
2496 add_cmd ("undisplay", class_vars
, undisplay_command
,
2497 "Cancel some expressions to be displayed when program stops.\n\
2498 Arguments are the code numbers of the expressions to stop displaying.\n\
2499 No argument means cancel all automatic-display expressions.\n\
2500 \"delete display\" has the same effect as this command.\n\
2501 Do \"info display\" to see current list of code numbers.",
2504 add_com ("display", class_vars
, display_command
,
2505 "Print value of expression EXP each time the program stops.\n\
2506 /FMT may be used before EXP as in the \"print\" command.\n\
2507 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2508 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2509 and examining is done as in the \"x\" command.\n\n\
2510 With no argument, display all currently requested auto-display expressions.\n\
2511 Use \"undisplay\" to cancel display requests previously made."
2514 add_cmd ("display", class_vars
, enable_display
,
2515 "Enable some expressions to be displayed when program stops.\n\
2516 Arguments are the code numbers of the expressions to resume displaying.\n\
2517 No argument means enable all automatic-display expressions.\n\
2518 Do \"info display\" to see current list of code numbers.", &enablelist
);
2520 add_cmd ("display", class_vars
, disable_display_command
,
2521 "Disable some expressions to be displayed when program stops.\n\
2522 Arguments are the code numbers of the expressions to stop displaying.\n\
2523 No argument means disable all automatic-display expressions.\n\
2524 Do \"info display\" to see current list of code numbers.", &disablelist
);
2526 add_cmd ("display", class_vars
, undisplay_command
,
2527 "Cancel some expressions to be displayed when program stops.\n\
2528 Arguments are the code numbers of the expressions to stop displaying.\n\
2529 No argument means cancel all automatic-display expressions.\n\
2530 Do \"info display\" to see current list of code numbers.", &deletelist
);
2532 add_com ("printf", class_vars
, printf_command
,
2533 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2534 This is useful for formatted output in user-defined commands.");
2536 add_com ("output", class_vars
, output_command
,
2537 "Like \"print\" but don't put in value history and don't print newline.\n\
2538 This is useful in user-defined commands.");
2540 add_prefix_cmd ("set", class_vars
, set_command
,
2541 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2542 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2543 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2544 with $), a register (a few standard names starting with $), or an actual\n\
2545 variable in the program being debugged. EXP is any valid expression.\n",
2546 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2547 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2548 You can see these environment settings with the \"show\" command.", NULL
),
2549 &setlist
, "set ", 1, &cmdlist
);
2551 add_com ("assign", class_vars
, set_command
, concat ("Evaluate expression \
2552 EXP and assign result to variable VAR, using assignment\n\
2553 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2554 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2555 with $), a register (a few standard names starting with $), or an actual\n\
2556 variable in the program being debugged. EXP is any valid expression.\n",
2557 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2558 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2559 You can see these environment settings with the \"show\" command.", NULL
));
2561 /* "call" is the same as "set", but handy for dbx users to call fns. */
2562 c
= add_com ("call", class_vars
, call_command
,
2563 "Call a function in the program.\n\
2564 The argument is the function name and arguments, in the notation of the\n\
2565 current working language. The result is printed and saved in the value\n\
2566 history, if it is not void.");
2567 c
->completer
= location_completer
;
2569 add_cmd ("variable", class_vars
, set_command
,
2570 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2571 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2572 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2573 with $), a register (a few standard names starting with $), or an actual\n\
2574 variable in the program being debugged. EXP is any valid expression.\n\
2575 This may usually be abbreviated to simply \"set\".",
2578 c
= add_com ("print", class_vars
, print_command
,
2579 concat ("Print value of expression EXP.\n\
2580 Variables accessible are those of the lexical environment of the selected\n\
2581 stack frame, plus all those whose scope is global or an entire file.\n\
2583 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2584 $$NUM refers to NUM'th value back from the last one.\n\
2585 Names starting with $ refer to registers (with the values they would have\n",
2586 "if the program were to return to the stack frame now selected, restoring\n\
2587 all registers saved by frames farther in) or else to debugger\n\
2588 \"convenience\" variables (any such name not a known register).\n\
2589 Use assignment expressions to give values to convenience variables.\n",
2591 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2592 @ is a binary operator for treating consecutive data objects\n\
2593 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2594 element is FOO, whose second element is stored in the space following\n\
2595 where FOO is stored, etc. FOO must be an expression whose value\n\
2596 resides in memory.\n",
2598 EXP may be preceded with /FMT, where FMT is a format letter\n\
2599 but no count or size letter (see \"x\" command).", NULL
));
2600 c
->completer
= location_completer
;
2601 add_com_alias ("p", "print", class_vars
, 1);
2603 c
= add_com ("inspect", class_vars
, inspect_command
,
2604 "Same as \"print\" command, except that if you are running in the epoch\n\
2605 environment, the value is printed in its own window.");
2606 c
->completer
= location_completer
;
2609 add_set_cmd ("max-symbolic-offset", no_class
, var_uinteger
,
2610 (char *) &max_symbolic_offset
,
2611 "Set the largest offset that will be printed in <symbol+1234> form.",
2615 add_set_cmd ("symbol-filename", no_class
, var_boolean
,
2616 (char *) &print_symbol_filename
,
2617 "Set printing of source filename and line number with <symbol>.",
2621 /* For examine/instruction a single byte quantity is specified as
2622 the data. This avoids problems with value_at_lazy() requiring a
2623 valid data type (and rejecting VOID). */
2624 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2626 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2627 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2628 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2629 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);