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. */
449 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
450 if (TARGET_PTR_BIT
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
451 addr
&= ((CORE_ADDR
) 1 << TARGET_PTR_BIT
) - 1;
452 print_address (addr
, stream
);
457 value_print (value_from_longest (builtin_type_true_char
, val_long
),
458 stream
, 0, Val_pretty_default
);
462 if (len
== sizeof (float))
463 type
= builtin_type_float
;
464 else if (len
== sizeof (double))
465 type
= builtin_type_double
;
466 print_floating (valaddr
, type
, stream
);
473 /* Binary; 't' stands for "two". */
475 char bits
[8 * (sizeof val_long
) + 1];
476 char buf
[8 * (sizeof val_long
) + 32];
481 width
= 8 * (sizeof val_long
);
498 error ("Undefined output size \"%c\".", size
);
504 bits
[width
] = (val_long
& 1) ? '1' : '0';
509 while (*cp
&& *cp
== '0')
514 strcpy (buf
, local_binary_format_prefix ());
516 strcat (buf
, local_binary_format_suffix ());
517 fprintf_filtered (stream
, buf
);
522 error ("Undefined output format \"%c\".", format
);
526 /* Specify default address for `x' command.
527 `info lines' uses this. */
530 set_next_address (addr
)
535 /* Make address available to the user as $_. */
536 set_internalvar (lookup_internalvar ("_"),
537 value_from_longest (lookup_pointer_type (builtin_type_void
),
541 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
542 after LEADIN. Print nothing if no symbolic name is found nearby.
543 Optionally also print source file and line number, if available.
544 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
545 or to interpret it as a possible C++ name and convert it back to source
546 form. However note that DO_DEMANGLE can be overridden by the specific
547 settings of the demangle and asm_demangle variables. */
550 print_address_symbolic (addr
, stream
, do_demangle
, leadin
)
552 struct ui_file
*stream
;
557 char *filename
= NULL
;
562 struct cleanup
*cleanup_chain
= make_cleanup (free
, name
);
563 if (print_symbol_filename
)
564 make_cleanup (free
, filename
);
566 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
, &filename
, &line
, &unmapped
))
569 fputs_filtered (leadin
, stream
);
571 fputs_filtered ("<*", stream
);
573 fputs_filtered ("<", stream
);
574 fputs_filtered (name
, stream
);
576 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
578 /* Append source filename and line number if desired. Give specific
579 line # of this addr, if we have it; else line # of the nearest symbol. */
580 if (print_symbol_filename
&& filename
!= NULL
)
583 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
585 fprintf_filtered (stream
, " in %s", filename
);
588 fputs_filtered ("*>", stream
);
590 fputs_filtered (">", stream
);
592 do_cleanups (cleanup_chain
);
595 /* Given an address ADDR return all the elements needed to print the
596 address in a symbolic form. NAME can be mangled or not depending
597 on DO_DEMANGLE (and also on the asm_demangle global variable,
598 manipulated via ''set print asm-demangle''). Return 0 in case of
599 success, when all the info in the OUT paramters is valid. Return 1
602 build_address_symbolic (CORE_ADDR addr
, /* IN */
603 int do_demangle
, /* IN */
604 char **name
, /* OUT */
605 int *offset
, /* OUT */
606 char **filename
, /* OUT */
608 int *unmapped
) /* OUT */
610 struct minimal_symbol
*msymbol
;
611 struct symbol
*symbol
;
612 struct symtab
*symtab
= 0;
613 CORE_ADDR name_location
= 0;
614 asection
*section
= 0;
615 char *name_temp
= "";
617 /* Let's say it is unmapped. */
620 /* Determine if the address is in an overlay, and whether it is
622 if (overlay_debugging
)
624 section
= find_pc_overlay (addr
);
625 if (pc_in_unmapped_range (addr
, section
))
628 addr
= overlay_mapped_address (addr
, section
);
632 /* On some targets, add in extra "flag" bits to PC for
633 disassembly. This should ensure that "rounding errors" in
634 symbol addresses that are masked for disassembly favour the
635 the correct symbol. */
637 #ifdef GDB_TARGET_UNMASK_DISAS_PC
638 addr
= GDB_TARGET_UNMASK_DISAS_PC (addr
);
641 /* First try to find the address in the symbol table, then
642 in the minsyms. Take the closest one. */
644 /* This is defective in the sense that it only finds text symbols. So
645 really this is kind of pointless--we should make sure that the
646 minimal symbols have everything we need (by changing that we could
647 save some memory, but for many debug format--ELF/DWARF or
648 anything/stabs--it would be inconvenient to eliminate those minimal
650 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
651 symbol
= find_pc_sect_function (addr
, section
);
655 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
657 name_temp
= SYMBOL_SOURCE_NAME (symbol
);
659 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
664 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
666 /* The msymbol is closer to the address than the symbol;
667 use the msymbol instead. */
670 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
672 name_temp
= SYMBOL_SOURCE_NAME (msymbol
);
674 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
677 if (symbol
== NULL
&& msymbol
== NULL
)
680 /* On some targets, mask out extra "flag" bits from PC for handsome
683 #ifdef GDB_TARGET_MASK_DISAS_PC
684 name_location
= GDB_TARGET_MASK_DISAS_PC (name_location
);
685 addr
= GDB_TARGET_MASK_DISAS_PC (addr
);
688 /* If the nearest symbol is too far away, don't print anything symbolic. */
690 /* For when CORE_ADDR is larger than unsigned int, we do math in
691 CORE_ADDR. But when we detect unsigned wraparound in the
692 CORE_ADDR math, we ignore this test and print the offset,
693 because addr+max_symbolic_offset has wrapped through the end
694 of the address space back to the beginning, giving bogus comparison. */
695 if (addr
> name_location
+ max_symbolic_offset
696 && name_location
+ max_symbolic_offset
> name_location
)
699 *offset
= addr
- name_location
;
701 *name
= xstrdup (name_temp
);
703 if (print_symbol_filename
)
705 struct symtab_and_line sal
;
707 sal
= find_pc_sect_line (addr
, section
, 0);
711 *filename
= xstrdup (sal
.symtab
->filename
);
714 else if (symtab
&& symbol
&& symbol
->line
)
716 *filename
= xstrdup (symtab
->filename
);
717 *line
= symbol
->line
;
721 *filename
= xstrdup (symtab
->filename
);
728 /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
731 print_address_numeric (addr
, use_local
, stream
)
734 struct ui_file
*stream
;
736 /* This assumes a CORE_ADDR can fit in a LONGEST. Probably a safe
738 print_longest (stream
, 'x', use_local
, (ULONGEST
) addr
);
741 /* Print address ADDR symbolically on STREAM.
742 First print it as a number. Then perhaps print
743 <SYMBOL + OFFSET> after the number. */
746 print_address (addr
, stream
)
748 struct ui_file
*stream
;
750 print_address_numeric (addr
, 1, stream
);
751 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
754 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
755 controls whether to print the symbolic name "raw" or demangled.
756 Global setting "addressprint" controls whether to print hex address
760 print_address_demangle (addr
, stream
, do_demangle
)
762 struct ui_file
*stream
;
767 fprintf_filtered (stream
, "0");
769 else if (addressprint
)
771 print_address_numeric (addr
, 1, stream
);
772 print_address_symbolic (addr
, stream
, do_demangle
, " ");
776 print_address_symbolic (addr
, stream
, do_demangle
, "");
781 /* These are the types that $__ will get after an examine command of one
784 static struct type
*examine_i_type
;
786 static struct type
*examine_b_type
;
787 static struct type
*examine_h_type
;
788 static struct type
*examine_w_type
;
789 static struct type
*examine_g_type
;
791 /* Examine data at address ADDR in format FMT.
792 Fetch it from memory and print on gdb_stdout. */
795 do_examine (fmt
, addr
, sect
)
796 struct format_data fmt
;
800 register char format
= 0;
802 register int count
= 1;
803 struct type
*val_type
= NULL
;
805 register int maxelts
;
813 /* String or instruction format implies fetch single bytes
814 regardless of the specified size. */
815 if (format
== 's' || format
== 'i')
819 val_type
= examine_i_type
;
820 else if (size
== 'b')
821 val_type
= examine_b_type
;
822 else if (size
== 'h')
823 val_type
= examine_h_type
;
824 else if (size
== 'w')
825 val_type
= examine_w_type
;
826 else if (size
== 'g')
827 val_type
= examine_g_type
;
834 if (format
== 's' || format
== 'i')
837 /* Print as many objects as specified in COUNT, at most maxelts per line,
838 with the address of the next one at the start of each line. */
843 print_address (next_address
, gdb_stdout
);
844 printf_filtered (":");
849 printf_filtered ("\t");
850 /* Note that print_formatted sets next_address for the next
852 last_examine_address
= next_address
;
854 if (last_examine_value
)
855 value_free (last_examine_value
);
857 /* The value to be displayed is not fetched greedily.
858 Instead, to avoid the posibility of a fetched value not
859 being used, its retreval is delayed until the print code
860 uses it. When examining an instruction stream, the
861 disassembler will perform its own memory fetch using just
862 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
863 the disassembler be modified so that LAST_EXAMINE_VALUE
864 is left with the byte sequence from the last complete
865 instruction fetched from memory? */
866 last_examine_value
= value_at_lazy (val_type
, next_address
, sect
);
868 if (last_examine_value
)
869 release_value (last_examine_value
);
871 print_formatted (last_examine_value
, format
, size
, gdb_stdout
);
873 printf_filtered ("\n");
874 gdb_flush (gdb_stdout
);
879 validate_format (fmt
, cmdname
)
880 struct format_data fmt
;
884 error ("Size letters are meaningless in \"%s\" command.", cmdname
);
886 error ("Item count other than 1 is meaningless in \"%s\" command.",
888 if (fmt
.format
== 'i' || fmt
.format
== 's')
889 error ("Format letter \"%c\" is meaningless in \"%s\" command.",
890 fmt
.format
, cmdname
);
893 /* Evaluate string EXP as an expression in the current language and
894 print the resulting value. EXP may contain a format specifier as the
895 first argument ("/x myvar" for example, to print myvar in hex).
899 print_command_1 (exp
, inspect
, voidprint
)
904 struct expression
*expr
;
905 register struct cleanup
*old_chain
= 0;
906 register char format
= 0;
907 register value_ptr val
;
908 struct format_data fmt
;
911 /* Pass inspect flag to the rest of the print routines in a global (sigh). */
912 inspect_it
= inspect
;
914 if (exp
&& *exp
== '/')
917 fmt
= decode_format (&exp
, last_format
, 0);
918 validate_format (fmt
, "print");
919 last_format
= format
= fmt
.format
;
931 expr
= parse_expression (exp
);
932 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
,
935 val
= evaluate_expression (expr
);
937 /* C++: figure out what type we actually want to print it as. */
938 type
= VALUE_TYPE (val
);
941 && (TYPE_CODE (type
) == TYPE_CODE_PTR
942 || TYPE_CODE (type
) == TYPE_CODE_REF
)
943 && (TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_STRUCT
944 || TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_UNION
))
948 v
= value_from_vtable_info (val
, TYPE_TARGET_TYPE (type
));
952 type
= VALUE_TYPE (val
);
957 val
= access_value_history (0);
959 if (voidprint
|| (val
&& VALUE_TYPE (val
) &&
960 TYPE_CODE (VALUE_TYPE (val
)) != TYPE_CODE_VOID
))
962 int histindex
= record_latest_value (val
);
965 annotate_value_history_begin (histindex
, VALUE_TYPE (val
));
967 annotate_value_begin (VALUE_TYPE (val
));
970 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp
, histindex
);
971 else if (histindex
>= 0)
972 printf_filtered ("$%d = ", histindex
);
975 annotate_value_history_value ();
977 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
978 printf_filtered ("\n");
981 annotate_value_history_end ();
983 annotate_value_end ();
986 printf_unfiltered ("\") )\030");
990 do_cleanups (old_chain
);
991 inspect_it
= 0; /* Reset print routines to normal */
996 print_command (exp
, from_tty
)
1000 print_command_1 (exp
, 0, 1);
1003 /* Same as print, except in epoch, it gets its own window */
1006 inspect_command (exp
, from_tty
)
1010 extern int epoch_interface
;
1012 print_command_1 (exp
, epoch_interface
, 1);
1015 /* Same as print, except it doesn't print void results. */
1018 call_command (exp
, from_tty
)
1022 print_command_1 (exp
, 0, 0);
1027 output_command (exp
, from_tty
)
1031 struct expression
*expr
;
1032 register struct cleanup
*old_chain
;
1033 register char format
= 0;
1034 register value_ptr val
;
1035 struct format_data fmt
;
1037 if (exp
&& *exp
== '/')
1040 fmt
= decode_format (&exp
, 0, 0);
1041 validate_format (fmt
, "output");
1042 format
= fmt
.format
;
1045 expr
= parse_expression (exp
);
1046 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
, &expr
);
1048 val
= evaluate_expression (expr
);
1050 annotate_value_begin (VALUE_TYPE (val
));
1052 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
1054 annotate_value_end ();
1057 gdb_flush (gdb_stdout
);
1059 do_cleanups (old_chain
);
1064 set_command (exp
, from_tty
)
1068 struct expression
*expr
= parse_expression (exp
);
1069 register struct cleanup
*old_chain
1070 = make_cleanup ((make_cleanup_func
) free_current_contents
, &expr
);
1071 evaluate_expression (expr
);
1072 do_cleanups (old_chain
);
1077 sym_info (arg
, from_tty
)
1081 struct minimal_symbol
*msymbol
;
1082 struct objfile
*objfile
;
1083 struct obj_section
*osect
;
1085 CORE_ADDR addr
, sect_addr
;
1087 unsigned int offset
;
1090 error_no_arg ("address");
1092 addr
= parse_and_eval_address (arg
);
1093 ALL_OBJSECTIONS (objfile
, osect
)
1095 sect
= osect
->the_bfd_section
;
1096 sect_addr
= overlay_mapped_address (addr
, sect
);
1098 if (osect
->addr
<= sect_addr
&& sect_addr
< osect
->endaddr
&&
1099 (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, sect
)))
1102 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1104 printf_filtered ("%s + %u in ",
1105 SYMBOL_SOURCE_NAME (msymbol
), offset
);
1107 printf_filtered ("%s in ",
1108 SYMBOL_SOURCE_NAME (msymbol
));
1109 if (pc_in_unmapped_range (addr
, sect
))
1110 printf_filtered ("load address range of ");
1111 if (section_is_overlay (sect
))
1112 printf_filtered ("%s overlay ",
1113 section_is_mapped (sect
) ? "mapped" : "unmapped");
1114 printf_filtered ("section %s", sect
->name
);
1115 printf_filtered ("\n");
1119 printf_filtered ("No symbol matches %s.\n", arg
);
1124 address_info (exp
, from_tty
)
1128 register struct symbol
*sym
;
1129 register struct minimal_symbol
*msymbol
;
1131 register long basereg
;
1133 CORE_ADDR load_addr
;
1134 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1135 if exp is a field of `this'. */
1138 error ("Argument required.");
1140 sym
= lookup_symbol (exp
, get_selected_block (), VAR_NAMESPACE
,
1141 &is_a_field_of_this
, (struct symtab
**) NULL
);
1144 if (is_a_field_of_this
)
1146 printf_filtered ("Symbol \"");
1147 fprintf_symbol_filtered (gdb_stdout
, exp
,
1148 current_language
->la_language
, DMGL_ANSI
);
1149 printf_filtered ("\" is a field of the local class variable `this'\n");
1153 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1155 if (msymbol
!= NULL
)
1157 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1159 printf_filtered ("Symbol \"");
1160 fprintf_symbol_filtered (gdb_stdout
, exp
,
1161 current_language
->la_language
, DMGL_ANSI
);
1162 printf_filtered ("\" is at ");
1163 print_address_numeric (load_addr
, 1, gdb_stdout
);
1164 printf_filtered (" in a file compiled without debugging");
1165 section
= SYMBOL_BFD_SECTION (msymbol
);
1166 if (section_is_overlay (section
))
1168 load_addr
= overlay_unmapped_address (load_addr
, section
);
1169 printf_filtered (",\n -- loaded at ");
1170 print_address_numeric (load_addr
, 1, gdb_stdout
);
1171 printf_filtered (" in overlay section %s", section
->name
);
1173 printf_filtered (".\n");
1176 error ("No symbol \"%s\" in current context.", exp
);
1180 printf_filtered ("Symbol \"");
1181 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_NAME (sym
),
1182 current_language
->la_language
, DMGL_ANSI
);
1183 printf_filtered ("\" is ");
1184 val
= SYMBOL_VALUE (sym
);
1185 basereg
= SYMBOL_BASEREG (sym
);
1186 section
= SYMBOL_BFD_SECTION (sym
);
1188 switch (SYMBOL_CLASS (sym
))
1191 case LOC_CONST_BYTES
:
1192 printf_filtered ("constant");
1196 printf_filtered ("a label at address ");
1197 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
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 ("a variable in register %s", REGISTER_NAME (val
));
1213 printf_filtered ("static storage at address ");
1214 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1216 if (section_is_overlay (section
))
1218 load_addr
= overlay_unmapped_address (load_addr
, section
);
1219 printf_filtered (",\n -- loaded at ");
1220 print_address_numeric (load_addr
, 1, gdb_stdout
);
1221 printf_filtered (" in overlay section %s", section
->name
);
1226 printf_filtered ("external global (indirect addressing), at address *(");
1227 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1229 printf_filtered (")");
1230 if (section_is_overlay (section
))
1232 load_addr
= overlay_unmapped_address (load_addr
, section
);
1233 printf_filtered (",\n -- loaded at ");
1234 print_address_numeric (load_addr
, 1, gdb_stdout
);
1235 printf_filtered (" in overlay section %s", section
->name
);
1240 printf_filtered ("an argument in register %s", REGISTER_NAME (val
));
1243 case LOC_REGPARM_ADDR
:
1244 printf_filtered ("address of an argument in register %s", REGISTER_NAME (val
));
1248 printf_filtered ("an argument at offset %ld", val
);
1252 printf_filtered ("an argument at frame offset %ld", val
);
1256 printf_filtered ("a local variable at frame offset %ld", val
);
1260 printf_filtered ("a reference argument at offset %ld", val
);
1264 printf_filtered ("a variable at offset %ld from register %s",
1265 val
, REGISTER_NAME (basereg
));
1268 case LOC_BASEREG_ARG
:
1269 printf_filtered ("an argument at offset %ld from register %s",
1270 val
, REGISTER_NAME (basereg
));
1274 printf_filtered ("a typedef");
1278 printf_filtered ("a function at address ");
1279 #ifdef GDB_TARGET_MASK_DISAS_PC
1280 print_address_numeric
1281 (load_addr
= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))),
1284 print_address_numeric (load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
1287 if (section_is_overlay (section
))
1289 load_addr
= overlay_unmapped_address (load_addr
, section
);
1290 printf_filtered (",\n -- loaded at ");
1291 print_address_numeric (load_addr
, 1, gdb_stdout
);
1292 printf_filtered (" in overlay section %s", section
->name
);
1296 case LOC_UNRESOLVED
:
1298 struct minimal_symbol
*msym
;
1300 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, NULL
);
1302 printf_filtered ("unresolved");
1305 section
= SYMBOL_BFD_SECTION (msym
);
1306 printf_filtered ("static storage at address ");
1307 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (msym
),
1309 if (section_is_overlay (section
))
1311 load_addr
= overlay_unmapped_address (load_addr
, section
);
1312 printf_filtered (",\n -- loaded at ");
1313 print_address_numeric (load_addr
, 1, gdb_stdout
);
1314 printf_filtered (" in overlay section %s", section
->name
);
1320 case LOC_THREAD_LOCAL_STATIC
:
1322 "a thread-local variable at offset %ld from the thread base register %s",
1323 val
, REGISTER_NAME (basereg
));
1326 case LOC_OPTIMIZED_OUT
:
1327 printf_filtered ("optimized out");
1331 printf_filtered ("of unknown (botched) type");
1334 printf_filtered (".\n");
1338 x_command (exp
, from_tty
)
1342 struct expression
*expr
;
1343 struct format_data fmt
;
1344 struct cleanup
*old_chain
;
1347 fmt
.format
= last_format
;
1348 fmt
.size
= last_size
;
1351 if (exp
&& *exp
== '/')
1354 fmt
= decode_format (&exp
, last_format
, last_size
);
1357 /* If we have an expression, evaluate it and use it as the address. */
1359 if (exp
!= 0 && *exp
!= 0)
1361 expr
= parse_expression (exp
);
1362 /* Cause expression not to be there any more
1363 if this command is repeated with Newline.
1364 But don't clobber a user-defined command's definition. */
1367 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
,
1369 val
= evaluate_expression (expr
);
1370 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_REF
)
1371 val
= value_ind (val
);
1372 /* In rvalue contexts, such as this, functions are coerced into
1373 pointers to functions. This makes "x/i main" work. */
1374 if ( /* last_format == 'i'
1375 && */ TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_FUNC
1376 && VALUE_LVAL (val
) == lval_memory
)
1377 next_address
= VALUE_ADDRESS (val
);
1379 next_address
= value_as_pointer (val
);
1380 if (VALUE_BFD_SECTION (val
))
1381 next_section
= VALUE_BFD_SECTION (val
);
1382 do_cleanups (old_chain
);
1385 do_examine (fmt
, next_address
, next_section
);
1387 /* If the examine succeeds, we remember its size and format for next time. */
1388 last_size
= fmt
.size
;
1389 last_format
= fmt
.format
;
1391 /* Set a couple of internal variables if appropriate. */
1392 if (last_examine_value
)
1394 /* Make last address examined available to the user as $_. Use
1395 the correct pointer type. */
1396 set_internalvar (lookup_internalvar ("_"),
1397 value_from_longest (
1398 lookup_pointer_type (VALUE_TYPE (last_examine_value
)),
1399 (LONGEST
) last_examine_address
));
1401 /* Make contents of last address examined available to the user as $__. */
1402 /* If the last value has not been fetched from memory then don't
1403 fetch it now - instead mark it by voiding the $__ variable. */
1404 if (VALUE_LAZY (last_examine_value
))
1405 set_internalvar (lookup_internalvar ("__"),
1406 allocate_value (builtin_type_void
));
1408 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1413 /* Add an expression to the auto-display chain.
1414 Specify the expression. */
1417 display_command (exp
, from_tty
)
1421 struct format_data fmt
;
1422 register struct expression
*expr
;
1423 register struct display
*new;
1427 if (tui_version
&& *exp
== '$')
1428 display_it
= ((TuiStatus
) tuiDo (
1429 (TuiOpaqueFuncPtr
) tui_vSetLayoutTo
, exp
) == TUI_FAILURE
);
1443 fmt
= decode_format (&exp
, 0, 0);
1444 if (fmt
.size
&& fmt
.format
== 0)
1446 if (fmt
.format
== 'i' || fmt
.format
== 's')
1456 innermost_block
= 0;
1457 expr
= parse_expression (exp
);
1459 new = (struct display
*) xmalloc (sizeof (struct display
));
1462 new->block
= innermost_block
;
1463 new->next
= display_chain
;
1464 new->number
= ++display_number
;
1466 new->status
= enabled
;
1467 display_chain
= new;
1469 if (from_tty
&& target_has_execution
)
1470 do_one_display (new);
1480 free ((PTR
) d
->exp
);
1484 /* Clear out the display_chain.
1485 Done when new symtabs are loaded, since this invalidates
1486 the types stored in many expressions. */
1491 register struct display
*d
;
1493 while ((d
= display_chain
) != NULL
)
1495 free ((PTR
) d
->exp
);
1496 display_chain
= d
->next
;
1501 /* Delete the auto-display number NUM. */
1504 delete_display (num
)
1507 register struct display
*d1
, *d
;
1510 error ("No display number %d.", num
);
1512 if (display_chain
->number
== num
)
1515 display_chain
= d1
->next
;
1519 for (d
= display_chain
;; d
= d
->next
)
1522 error ("No display number %d.", num
);
1523 if (d
->next
->number
== num
)
1533 /* Delete some values from the auto-display chain.
1534 Specify the element numbers. */
1537 undisplay_command (args
, from_tty
)
1541 register char *p
= args
;
1547 if (query ("Delete all auto-display expressions? "))
1556 while (*p1
>= '0' && *p1
<= '9')
1558 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1559 error ("Arguments must be display numbers.");
1563 delete_display (num
);
1566 while (*p
== ' ' || *p
== '\t')
1572 /* Display a single auto-display.
1573 Do nothing if the display cannot be printed in the current context,
1574 or if the display is disabled. */
1580 int within_current_scope
;
1582 if (d
->status
== disabled
)
1586 within_current_scope
= contained_in (get_selected_block (), d
->block
);
1588 within_current_scope
= 1;
1589 if (!within_current_scope
)
1592 current_display_number
= d
->number
;
1594 annotate_display_begin ();
1595 printf_filtered ("%d", d
->number
);
1596 annotate_display_number_end ();
1597 printf_filtered (": ");
1603 annotate_display_format ();
1605 printf_filtered ("x/");
1606 if (d
->format
.count
!= 1)
1607 printf_filtered ("%d", d
->format
.count
);
1608 printf_filtered ("%c", d
->format
.format
);
1609 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1610 printf_filtered ("%c", d
->format
.size
);
1611 printf_filtered (" ");
1613 annotate_display_expression ();
1615 print_expression (d
->exp
, gdb_stdout
);
1616 annotate_display_expression_end ();
1618 if (d
->format
.count
!= 1)
1619 printf_filtered ("\n");
1621 printf_filtered (" ");
1623 val
= evaluate_expression (d
->exp
);
1624 addr
= value_as_pointer (val
);
1625 if (d
->format
.format
== 'i')
1626 addr
= ADDR_BITS_REMOVE (addr
);
1628 annotate_display_value ();
1630 do_examine (d
->format
, addr
, VALUE_BFD_SECTION (val
));
1634 annotate_display_format ();
1636 if (d
->format
.format
)
1637 printf_filtered ("/%c ", d
->format
.format
);
1639 annotate_display_expression ();
1641 print_expression (d
->exp
, gdb_stdout
);
1642 annotate_display_expression_end ();
1644 printf_filtered (" = ");
1646 annotate_display_expression ();
1648 print_formatted (evaluate_expression (d
->exp
),
1649 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1650 printf_filtered ("\n");
1653 annotate_display_end ();
1655 gdb_flush (gdb_stdout
);
1656 current_display_number
= -1;
1659 /* Display all of the values on the auto-display chain which can be
1660 evaluated in the current scope. */
1665 register struct display
*d
;
1667 for (d
= display_chain
; d
; d
= d
->next
)
1671 /* Delete the auto-display which we were in the process of displaying.
1672 This is done when there is an error or a signal. */
1675 disable_display (num
)
1678 register struct display
*d
;
1680 for (d
= display_chain
; d
; d
= d
->next
)
1681 if (d
->number
== num
)
1683 d
->status
= disabled
;
1686 printf_unfiltered ("No display number %d.\n", num
);
1690 disable_current_display ()
1692 if (current_display_number
>= 0)
1694 disable_display (current_display_number
);
1695 fprintf_unfiltered (gdb_stderr
, "Disabling display %d to avoid infinite recursion.\n",
1696 current_display_number
);
1698 current_display_number
= -1;
1702 display_info (ignore
, from_tty
)
1706 register struct display
*d
;
1709 printf_unfiltered ("There are no auto-display expressions now.\n");
1711 printf_filtered ("Auto-display expressions now in effect:\n\
1712 Num Enb Expression\n");
1714 for (d
= display_chain
; d
; d
= d
->next
)
1716 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->status
]);
1718 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1720 else if (d
->format
.format
)
1721 printf_filtered ("/%c ", d
->format
.format
);
1722 print_expression (d
->exp
, gdb_stdout
);
1723 if (d
->block
&& !contained_in (get_selected_block (), d
->block
))
1724 printf_filtered (" (cannot be evaluated in the current context)");
1725 printf_filtered ("\n");
1726 gdb_flush (gdb_stdout
);
1731 enable_display (args
, from_tty
)
1735 register char *p
= args
;
1738 register struct display
*d
;
1742 for (d
= display_chain
; d
; d
= d
->next
)
1743 d
->status
= enabled
;
1749 while (*p1
>= '0' && *p1
<= '9')
1751 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1752 error ("Arguments must be display numbers.");
1756 for (d
= display_chain
; d
; d
= d
->next
)
1757 if (d
->number
== num
)
1759 d
->status
= enabled
;
1762 printf_unfiltered ("No display number %d.\n", num
);
1765 while (*p
== ' ' || *p
== '\t')
1772 disable_display_command (args
, from_tty
)
1776 register char *p
= args
;
1778 register struct display
*d
;
1782 for (d
= display_chain
; d
; d
= d
->next
)
1783 d
->status
= disabled
;
1789 while (*p1
>= '0' && *p1
<= '9')
1791 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1792 error ("Arguments must be display numbers.");
1794 disable_display (atoi (p
));
1797 while (*p
== ' ' || *p
== '\t')
1803 /* Print the value in stack frame FRAME of a variable
1804 specified by a struct symbol. */
1807 print_variable_value (var
, frame
, stream
)
1809 struct frame_info
*frame
;
1810 struct ui_file
*stream
;
1812 value_ptr val
= read_var_value (var
, frame
);
1814 value_print (val
, stream
, 0, Val_pretty_default
);
1817 /* Print the arguments of a stack frame, given the function FUNC
1818 running in that frame (as a symbol), the info on the frame,
1819 and the number of args according to the stack frame (or -1 if unknown). */
1821 /* References here and elsewhere to "number of args according to the
1822 stack frame" appear in all cases to refer to "number of ints of args
1823 according to the stack frame". At least for VAX, i386, isi. */
1826 print_frame_args (func
, fi
, num
, stream
)
1827 struct symbol
*func
;
1828 struct frame_info
*fi
;
1830 struct ui_file
*stream
;
1832 struct block
*b
= NULL
;
1836 register struct symbol
*sym
;
1837 register value_ptr val
;
1838 /* Offset of next stack argument beyond the one we have seen that is
1839 at the highest offset.
1840 -1 if we haven't come to a stack argument yet. */
1841 long highest_offset
= -1;
1843 /* Number of ints of arguments that we have printed so far. */
1844 int args_printed
= 0;
1846 struct cleanup
*old_chain
;
1847 struct ui_stream
*stb
;
1849 stb
= ui_out_stream_new (uiout
);
1850 old_chain
= make_cleanup ((make_cleanup_func
) ui_out_stream_delete
, stb
);
1855 b
= SYMBOL_BLOCK_VALUE (func
);
1856 nsyms
= BLOCK_NSYMS (b
);
1859 for (i
= 0; i
< nsyms
; i
++)
1862 sym
= BLOCK_SYM (b
, i
);
1864 /* Keep track of the highest stack argument offset seen, and
1865 skip over any kinds of symbols we don't care about. */
1867 switch (SYMBOL_CLASS (sym
))
1872 long current_offset
= SYMBOL_VALUE (sym
);
1873 arg_size
= TYPE_LENGTH (SYMBOL_TYPE (sym
));
1875 /* Compute address of next argument by adding the size of
1876 this argument and rounding to an int boundary. */
1878 = ((current_offset
+ arg_size
+ sizeof (int) - 1)
1879 & ~(sizeof (int) - 1));
1881 /* If this is the highest offset seen yet, set highest_offset. */
1882 if (highest_offset
== -1
1883 || (current_offset
> highest_offset
))
1884 highest_offset
= current_offset
;
1886 /* Add the number of ints we're about to print to args_printed. */
1887 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
1890 /* We care about types of symbols, but don't need to keep track of
1891 stack offsets in them. */
1893 case LOC_REGPARM_ADDR
:
1895 case LOC_BASEREG_ARG
:
1898 /* Other types of symbols we just skip over. */
1903 /* We have to look up the symbol because arguments can have
1904 two entries (one a parameter, one a local) and the one we
1905 want is the local, which lookup_symbol will find for us.
1906 This includes gcc1 (not gcc2) on the sparc when passing a
1907 small structure and gcc2 when the argument type is float
1908 and it is passed as a double and converted to float by
1909 the prologue (in the latter case the type of the LOC_ARG
1910 symbol is double and the type of the LOC_LOCAL symbol is
1912 /* But if the parameter name is null, don't try it.
1913 Null parameter names occur on the RS/6000, for traceback tables.
1914 FIXME, should we even print them? */
1916 if (*SYMBOL_NAME (sym
))
1918 struct symbol
*nsym
;
1919 nsym
= lookup_symbol
1921 b
, VAR_NAMESPACE
, (int *) NULL
, (struct symtab
**) NULL
);
1922 if (SYMBOL_CLASS (nsym
) == LOC_REGISTER
)
1924 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1925 it was passed on the stack and loaded into a register,
1926 or passed in a register and stored in a stack slot.
1927 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1929 Reasons for using the LOC_ARG:
1930 (1) because find_saved_registers may be slow for remote
1932 (2) because registers are often re-used and stack slots
1933 rarely (never?) are. Therefore using the stack slot is
1934 much less likely to print garbage.
1936 Reasons why we might want to use the LOC_REGISTER:
1937 (1) So that the backtrace prints the same value as
1938 "print foo". I see no compelling reason why this needs
1939 to be the case; having the backtrace print the value which
1940 was passed in, and "print foo" print the value as modified
1941 within the called function, makes perfect sense to me.
1943 Additional note: It might be nice if "info args" displayed
1945 One more note: There is a case with sparc structure passing
1946 where we need to use the LOC_REGISTER, but this is dealt with
1947 by creating a single LOC_REGPARM in symbol reading. */
1949 /* Leave sym (the LOC_ARG) alone. */
1957 /* Print the current arg. */
1959 ui_out_text (uiout
, ", ");
1960 ui_out_wrap_hint (uiout
, " ");
1962 annotate_arg_begin ();
1964 ui_out_list_begin (uiout
, NULL
);
1965 fprintf_symbol_filtered (stb
->stream
, SYMBOL_SOURCE_NAME (sym
),
1966 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1967 ui_out_field_stream (uiout
, "name", stb
);
1968 annotate_arg_name_end ();
1969 ui_out_text (uiout
, "=");
1971 /* Print the current arg. */
1973 fprintf_filtered (stream
, ", ");
1976 annotate_arg_begin ();
1978 fprintf_symbol_filtered (stream
, SYMBOL_SOURCE_NAME (sym
),
1979 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1980 annotate_arg_name_end ();
1981 fputs_filtered ("=", stream
);
1984 /* Avoid value_print because it will deref ref parameters. We just
1985 want to print their addresses. Print ??? for args whose address
1986 we do not know. We pass 2 as "recurse" to val_print because our
1987 standard indentation here is 4 spaces, and val_print indents
1988 2 for each recurse. */
1989 val
= read_var_value (sym
, fi
);
1991 annotate_arg_value (val
== NULL
? NULL
: VALUE_TYPE (val
));
1995 if (GDB_TARGET_IS_D10V
1996 && SYMBOL_CLASS (sym
) == LOC_REGPARM
&& TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_PTR
)
1997 TYPE_LENGTH (VALUE_TYPE (val
)) = 2;
1999 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
2000 VALUE_ADDRESS (val
),
2001 stb
->stream
, 0, 0, 2, Val_no_prettyprint
);
2002 ui_out_field_stream (uiout
, "value", stb
);
2005 ui_out_text (uiout
, "???");
2007 ui_out_list_end (uiout
);
2009 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
2010 VALUE_ADDRESS (val
),
2011 stream
, 0, 0, 2, Val_no_prettyprint
);
2014 fputs_filtered ("???", stream
);
2017 annotate_arg_end ();
2022 /* Don't print nameless args in situations where we don't know
2023 enough about the stack to find them. */
2028 if (highest_offset
== -1)
2029 start
= FRAME_ARGS_SKIP
;
2031 start
= highest_offset
;
2033 print_frame_nameless_args (fi
, start
, num
- args_printed
,
2037 do_cleanups (old_chain
);
2038 #endif /* no UI_OUT */
2041 /* Print nameless args on STREAM.
2042 FI is the frameinfo for this frame, START is the offset
2043 of the first nameless arg, and NUM is the number of nameless args to
2044 print. FIRST is nonzero if this is the first argument (not just
2045 the first nameless arg). */
2048 print_frame_nameless_args (fi
, start
, num
, first
, stream
)
2049 struct frame_info
*fi
;
2053 struct ui_file
*stream
;
2059 for (i
= 0; i
< num
; i
++)
2062 #ifdef NAMELESS_ARG_VALUE
2063 NAMELESS_ARG_VALUE (fi
, start
, &arg_value
);
2065 argsaddr
= FRAME_ARGS_ADDRESS (fi
);
2069 arg_value
= read_memory_integer (argsaddr
+ start
, sizeof (int));
2073 fprintf_filtered (stream
, ", ");
2075 #ifdef PRINT_NAMELESS_INTEGER
2076 PRINT_NAMELESS_INTEGER (stream
, arg_value
);
2078 #ifdef PRINT_TYPELESS_INTEGER
2079 PRINT_TYPELESS_INTEGER (stream
, builtin_type_int
, (LONGEST
) arg_value
);
2081 fprintf_filtered (stream
, "%ld", arg_value
);
2082 #endif /* PRINT_TYPELESS_INTEGER */
2083 #endif /* PRINT_NAMELESS_INTEGER */
2085 start
+= sizeof (int);
2091 printf_command (arg
, from_tty
)
2095 register char *f
= NULL
;
2096 register char *s
= arg
;
2097 char *string
= NULL
;
2098 value_ptr
*val_args
;
2100 char *current_substring
;
2102 int allocated_args
= 20;
2103 struct cleanup
*old_cleanups
;
2105 val_args
= (value_ptr
*) xmalloc (allocated_args
* sizeof (value_ptr
));
2106 old_cleanups
= make_cleanup ((make_cleanup_func
) free_current_contents
,
2110 error_no_arg ("format-control string and values to print");
2112 /* Skip white space before format string */
2113 while (*s
== ' ' || *s
== '\t')
2116 /* A format string should follow, enveloped in double quotes */
2118 error ("Bad format string, missing '\"'.");
2120 /* Parse the format-control string and copy it into the string STRING,
2121 processing some kinds of escape sequence. */
2123 f
= string
= (char *) alloca (strlen (s
) + 1);
2131 error ("Bad format string, non-terminated '\"'.");
2143 *f
++ = '\007'; /* Bell */
2168 /* ??? TODO: handle other escape sequences */
2169 error ("Unrecognized escape character \\%c in format string.",
2179 /* Skip over " and following space and comma. */
2182 while (*s
== ' ' || *s
== '\t')
2185 if (*s
!= ',' && *s
!= 0)
2186 error ("Invalid argument syntax");
2190 while (*s
== ' ' || *s
== '\t')
2193 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2194 substrings
= alloca (strlen (string
) * 2);
2195 current_substring
= substrings
;
2198 /* Now scan the string for %-specs and see what kinds of args they want.
2199 argclass[I] classifies the %-specs so we can give printf_filtered
2200 something of the right size. */
2204 no_arg
, int_arg
, string_arg
, double_arg
, long_long_arg
2206 enum argclass
*argclass
;
2207 enum argclass this_argclass
;
2213 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
2221 while (strchr ("0123456789.hlL-+ #", *f
))
2223 if (*f
== 'l' || *f
== 'L')
2230 this_argclass
= string_arg
;
2236 this_argclass
= double_arg
;
2240 error ("`*' not supported for precision or width in printf");
2243 error ("Format specifier `n' not supported in printf");
2246 this_argclass
= no_arg
;
2251 this_argclass
= long_long_arg
;
2253 this_argclass
= int_arg
;
2257 if (this_argclass
!= no_arg
)
2259 strncpy (current_substring
, last_arg
, f
- last_arg
);
2260 current_substring
+= f
- last_arg
;
2261 *current_substring
++ = '\0';
2263 argclass
[nargs_wanted
++] = this_argclass
;
2267 /* Now, parse all arguments and evaluate them.
2268 Store the VALUEs in VAL_ARGS. */
2273 if (nargs
== allocated_args
)
2274 val_args
= (value_ptr
*) xrealloc ((char *) val_args
,
2275 (allocated_args
*= 2)
2276 * sizeof (value_ptr
));
2278 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2280 /* If format string wants a float, unchecked-convert the value to
2281 floating point of the same size */
2283 if (argclass
[nargs
] == double_arg
)
2285 struct type
*type
= VALUE_TYPE (val_args
[nargs
]);
2286 if (TYPE_LENGTH (type
) == sizeof (float))
2287 VALUE_TYPE (val_args
[nargs
]) = builtin_type_float
;
2288 if (TYPE_LENGTH (type
) == sizeof (double))
2289 VALUE_TYPE (val_args
[nargs
]) = builtin_type_double
;
2297 if (nargs
!= nargs_wanted
)
2298 error ("Wrong number of arguments for specified format-string");
2300 /* Now actually print them. */
2301 current_substring
= substrings
;
2302 for (i
= 0; i
< nargs
; i
++)
2304 switch (argclass
[i
])
2311 tem
= value_as_pointer (val_args
[i
]);
2313 /* This is a %s argument. Find the length of the string. */
2318 read_memory_section (tem
+ j
, &c
, 1,
2319 VALUE_BFD_SECTION (val_args
[i
]));
2324 /* Copy the string contents into a string inside GDB. */
2325 str
= (char *) alloca (j
+ 1);
2326 read_memory_section (tem
, str
, j
, VALUE_BFD_SECTION (val_args
[i
]));
2329 printf_filtered (current_substring
, str
);
2334 double val
= value_as_double (val_args
[i
]);
2335 printf_filtered (current_substring
, val
);
2339 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2341 long long val
= value_as_long (val_args
[i
]);
2342 printf_filtered (current_substring
, val
);
2346 error ("long long not supported in printf");
2350 /* FIXME: there should be separate int_arg and long_arg. */
2351 long val
= value_as_long (val_args
[i
]);
2352 printf_filtered (current_substring
, val
);
2355 default: /* purecov: deadcode */
2356 error ("internal error in printf_command"); /* purecov: deadcode */
2358 /* Skip to the next substring. */
2359 current_substring
+= strlen (current_substring
) + 1;
2361 /* Print the portion of the format string after the last argument. */
2362 printf_filtered (last_arg
);
2364 do_cleanups (old_cleanups
);
2367 /* Dump a specified section of assembly code. With no command line
2368 arguments, this command will dump the assembly code for the
2369 function surrounding the pc value in the selected frame. With one
2370 argument, it will dump the assembly code surrounding that pc value.
2371 Two arguments are interpeted as bounds within which to dump
2376 disassemble_command (arg
, from_tty
)
2380 CORE_ADDR low
, high
;
2382 CORE_ADDR pc
, pc_masked
;
2391 if (!selected_frame
)
2392 error ("No frame selected.\n");
2394 pc
= get_frame_pc (selected_frame
);
2395 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2396 error ("No function contains program counter for selected frame.\n");
2398 else if (tui_version
)
2399 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2403 low
+= FUNCTION_START_OFFSET
;
2405 else if (!(space_index
= (char *) strchr (arg
, ' ')))
2408 pc
= parse_and_eval_address (arg
);
2409 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2410 error ("No function contains specified address.\n");
2412 else if (tui_version
)
2413 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2418 if (overlay_debugging
)
2420 section
= find_pc_overlay (pc
);
2421 if (pc_in_unmapped_range (pc
, section
))
2423 /* find_pc_partial_function will have returned low and high
2424 relative to the symbolic (mapped) address range. Need to
2425 translate them back to the unmapped range where PC is. */
2426 low
= overlay_unmapped_address (low
, section
);
2427 high
= overlay_unmapped_address (high
, section
);
2431 low
+= FUNCTION_START_OFFSET
;
2435 /* Two arguments. */
2436 *space_index
= '\0';
2437 low
= parse_and_eval_address (arg
);
2438 high
= parse_and_eval_address (space_index
+ 1);
2443 m_winPtrIsNull (disassemWin
) || !disassemWin
->generic
.isVisible
)
2446 printf_filtered ("Dump of assembler code ");
2449 printf_filtered ("for function %s:\n", name
);
2453 printf_filtered ("from ");
2454 print_address_numeric (low
, 1, gdb_stdout
);
2455 printf_filtered (" to ");
2456 print_address_numeric (high
, 1, gdb_stdout
);
2457 printf_filtered (":\n");
2460 /* Dump the specified range. */
2463 #ifdef GDB_TARGET_MASK_DISAS_PC
2464 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2469 while (pc_masked
< high
)
2472 print_address (pc_masked
, gdb_stdout
);
2473 printf_filtered (":\t");
2474 /* We often wrap here if there are long symbolic names. */
2476 pc
+= print_insn (pc
, gdb_stdout
);
2477 printf_filtered ("\n");
2479 #ifdef GDB_TARGET_MASK_DISAS_PC
2480 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2485 printf_filtered ("End of assembler dump.\n");
2486 gdb_flush (gdb_stdout
);
2491 tuiDo ((TuiOpaqueFuncPtr
) tui_vAddWinToLayout
, DISASSEM_WIN
);
2492 tuiDo ((TuiOpaqueFuncPtr
) tui_vUpdateSourceWindowsWithAddr
, low
);
2497 /* Print the instruction at address MEMADDR in debugged memory,
2498 on STREAM. Returns length of the instruction, in bytes. */
2501 print_insn (memaddr
, stream
)
2503 struct ui_file
*stream
;
2505 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2506 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_BIG
;
2508 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_LITTLE
;
2510 if (TARGET_ARCHITECTURE
!= NULL
)
2511 TARGET_PRINT_INSN_INFO
->mach
= TARGET_ARCHITECTURE
->mach
;
2512 /* else: should set .mach=0 but some disassemblers don't grok this */
2514 return TARGET_PRINT_INSN (memaddr
, TARGET_PRINT_INSN_INFO
);
2519 _initialize_printcmd ()
2521 current_display_number
= -1;
2523 add_info ("address", address_info
,
2524 "Describe where symbol SYM is stored.");
2526 add_info ("symbol", sym_info
,
2527 "Describe what symbol is at location ADDR.\n\
2528 Only for symbols with fixed locations (global or static scope).");
2530 add_com ("x", class_vars
, x_command
,
2531 concat ("Examine memory: x/FMT ADDRESS.\n\
2532 ADDRESS is an expression for the memory address to examine.\n\
2533 FMT is a repeat count followed by a format letter and a size letter.\n\
2534 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2535 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
2536 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2537 The specified number of objects of the specified size are printed\n\
2538 according to the format.\n\n\
2539 Defaults for format and size letters are those previously used.\n\
2540 Default count is 1. Default address is following last thing printed\n\
2541 with this command or \"print\".", NULL
));
2543 add_com ("disassemble", class_vars
, disassemble_command
,
2544 "Disassemble a specified section of memory.\n\
2545 Default is the function surrounding the pc of the selected frame.\n\
2546 With a single argument, the function surrounding that address is dumped.\n\
2547 Two arguments are taken as a range of memory to dump.");
2549 add_com_alias ("va", "disassemble", class_xdb
, 0);
2552 add_com ("whereis", class_vars
, whereis_command
,
2553 "Print line number and file of definition of variable.");
2556 add_info ("display", display_info
,
2557 "Expressions to display when program stops, with code numbers.");
2559 add_cmd ("undisplay", class_vars
, undisplay_command
,
2560 "Cancel some expressions to be displayed when program stops.\n\
2561 Arguments are the code numbers of the expressions to stop displaying.\n\
2562 No argument means cancel all automatic-display expressions.\n\
2563 \"delete display\" has the same effect as this command.\n\
2564 Do \"info display\" to see current list of code numbers.",
2567 add_com ("display", class_vars
, display_command
,
2568 "Print value of expression EXP each time the program stops.\n\
2569 /FMT may be used before EXP as in the \"print\" command.\n\
2570 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2571 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2572 and examining is done as in the \"x\" command.\n\n\
2573 With no argument, display all currently requested auto-display expressions.\n\
2574 Use \"undisplay\" to cancel display requests previously made."
2577 add_cmd ("display", class_vars
, enable_display
,
2578 "Enable some expressions to be displayed when program stops.\n\
2579 Arguments are the code numbers of the expressions to resume displaying.\n\
2580 No argument means enable all automatic-display expressions.\n\
2581 Do \"info display\" to see current list of code numbers.", &enablelist
);
2583 add_cmd ("display", class_vars
, disable_display_command
,
2584 "Disable some expressions to be displayed when program stops.\n\
2585 Arguments are the code numbers of the expressions to stop displaying.\n\
2586 No argument means disable all automatic-display expressions.\n\
2587 Do \"info display\" to see current list of code numbers.", &disablelist
);
2589 add_cmd ("display", class_vars
, undisplay_command
,
2590 "Cancel some expressions to be displayed when program stops.\n\
2591 Arguments are the code numbers of the expressions to stop displaying.\n\
2592 No argument means cancel all automatic-display expressions.\n\
2593 Do \"info display\" to see current list of code numbers.", &deletelist
);
2595 add_com ("printf", class_vars
, printf_command
,
2596 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2597 This is useful for formatted output in user-defined commands.");
2599 add_com ("output", class_vars
, output_command
,
2600 "Like \"print\" but don't put in value history and don't print newline.\n\
2601 This is useful in user-defined commands.");
2603 add_prefix_cmd ("set", class_vars
, set_command
,
2604 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2605 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2606 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2607 with $), a register (a few standard names starting with $), or an actual\n\
2608 variable in the program being debugged. EXP is any valid expression.\n",
2609 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2610 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2611 You can see these environment settings with the \"show\" command.", NULL
),
2612 &setlist
, "set ", 1, &cmdlist
);
2614 add_com ("assign", class_vars
, set_command
, concat ("Evaluate expression \
2615 EXP and assign result to variable VAR, using assignment\n\
2616 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2617 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2618 with $), a register (a few standard names starting with $), or an actual\n\
2619 variable in the program being debugged. EXP is any valid expression.\n",
2620 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2621 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2622 You can see these environment settings with the \"show\" command.", NULL
));
2624 /* "call" is the same as "set", but handy for dbx users to call fns. */
2625 add_com ("call", class_vars
, call_command
,
2626 "Call a function in the program.\n\
2627 The argument is the function name and arguments, in the notation of the\n\
2628 current working language. The result is printed and saved in the value\n\
2629 history, if it is not void.");
2631 add_cmd ("variable", class_vars
, set_command
,
2632 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2633 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2634 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2635 with $), a register (a few standard names starting with $), or an actual\n\
2636 variable in the program being debugged. EXP is any valid expression.\n\
2637 This may usually be abbreviated to simply \"set\".",
2640 add_com ("print", class_vars
, print_command
,
2641 concat ("Print value of expression EXP.\n\
2642 Variables accessible are those of the lexical environment of the selected\n\
2643 stack frame, plus all those whose scope is global or an entire file.\n\
2645 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2646 $$NUM refers to NUM'th value back from the last one.\n\
2647 Names starting with $ refer to registers (with the values they would have\n",
2648 "if the program were to return to the stack frame now selected, restoring\n\
2649 all registers saved by frames farther in) or else to debugger\n\
2650 \"convenience\" variables (any such name not a known register).\n\
2651 Use assignment expressions to give values to convenience variables.\n",
2653 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2654 @ is a binary operator for treating consecutive data objects\n\
2655 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2656 element is FOO, whose second element is stored in the space following\n\
2657 where FOO is stored, etc. FOO must be an expression whose value\n\
2658 resides in memory.\n",
2660 EXP may be preceded with /FMT, where FMT is a format letter\n\
2661 but no count or size letter (see \"x\" command).", NULL
));
2662 add_com_alias ("p", "print", class_vars
, 1);
2664 add_com ("inspect", class_vars
, inspect_command
,
2665 "Same as \"print\" command, except that if you are running in the epoch\n\
2666 environment, the value is printed in its own window.");
2669 add_set_cmd ("max-symbolic-offset", no_class
, var_uinteger
,
2670 (char *) &max_symbolic_offset
,
2671 "Set the largest offset that will be printed in <symbol+1234> form.",
2675 add_set_cmd ("symbol-filename", no_class
, var_boolean
,
2676 (char *) &print_symbol_filename
,
2677 "Set printing of source filename and line number with <symbol>.",
2681 /* For examine/instruction a single byte quantity is specified as
2682 the data. This avoids problems with value_at_lazy() requiring a
2683 valid data type (and rejecting VOID). */
2684 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2686 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2687 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2688 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2689 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);