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 the value is a pointer, and pointers and addresses are not the
394 same, then at this point, the value's length is TARGET_ADDR_BIT, not
395 TYPE_LENGTH (type). */
396 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
397 len
= TARGET_ADDR_BIT
;
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 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
448 print_address (addr
, stream
);
453 value_print (value_from_longest (builtin_type_true_char
, val_long
),
454 stream
, 0, Val_pretty_default
);
458 if (len
== sizeof (float))
459 type
= builtin_type_float
;
460 else if (len
== sizeof (double))
461 type
= builtin_type_double
;
462 print_floating (valaddr
, type
, stream
);
466 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
469 /* Binary; 't' stands for "two". */
471 char bits
[8 * (sizeof val_long
) + 1];
472 char buf
[8 * (sizeof val_long
) + 32];
477 width
= 8 * (sizeof val_long
);
494 error ("Undefined output size \"%c\".", size
);
500 bits
[width
] = (val_long
& 1) ? '1' : '0';
505 while (*cp
&& *cp
== '0')
510 strcpy (buf
, local_binary_format_prefix ());
512 strcat (buf
, local_binary_format_suffix ());
513 fprintf_filtered (stream
, buf
);
518 error ("Undefined output format \"%c\".", format
);
522 /* Specify default address for `x' command.
523 `info lines' uses this. */
526 set_next_address (CORE_ADDR addr
)
530 /* Make address available to the user as $_. */
531 set_internalvar (lookup_internalvar ("_"),
532 value_from_pointer (lookup_pointer_type (builtin_type_void
),
536 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
537 after LEADIN. Print nothing if no symbolic name is found nearby.
538 Optionally also print source file and line number, if available.
539 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
540 or to interpret it as a possible C++ name and convert it back to source
541 form. However note that DO_DEMANGLE can be overridden by the specific
542 settings of the demangle and asm_demangle variables. */
545 print_address_symbolic (CORE_ADDR addr
, struct ui_file
*stream
, int do_demangle
,
549 char *filename
= NULL
;
554 /* throw away both name and filename */
555 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
556 make_cleanup (free_current_contents
, &filename
);
558 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
, &filename
, &line
, &unmapped
))
560 do_cleanups (cleanup_chain
);
564 fputs_filtered (leadin
, stream
);
566 fputs_filtered ("<*", stream
);
568 fputs_filtered ("<", stream
);
569 fputs_filtered (name
, stream
);
571 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
573 /* Append source filename and line number if desired. Give specific
574 line # of this addr, if we have it; else line # of the nearest symbol. */
575 if (print_symbol_filename
&& filename
!= NULL
)
578 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
580 fprintf_filtered (stream
, " in %s", filename
);
583 fputs_filtered ("*>", stream
);
585 fputs_filtered (">", stream
);
587 do_cleanups (cleanup_chain
);
590 /* Given an address ADDR return all the elements needed to print the
591 address in a symbolic form. NAME can be mangled or not depending
592 on DO_DEMANGLE (and also on the asm_demangle global variable,
593 manipulated via ''set print asm-demangle''). Return 0 in case of
594 success, when all the info in the OUT paramters is valid. Return 1
597 build_address_symbolic (CORE_ADDR addr
, /* IN */
598 int do_demangle
, /* IN */
599 char **name
, /* OUT */
600 int *offset
, /* OUT */
601 char **filename
, /* OUT */
603 int *unmapped
) /* OUT */
605 struct minimal_symbol
*msymbol
;
606 struct symbol
*symbol
;
607 struct symtab
*symtab
= 0;
608 CORE_ADDR name_location
= 0;
609 asection
*section
= 0;
610 char *name_temp
= "";
612 /* Let's say it is unmapped. */
615 /* Determine if the address is in an overlay, and whether it is
617 if (overlay_debugging
)
619 section
= find_pc_overlay (addr
);
620 if (pc_in_unmapped_range (addr
, section
))
623 addr
= overlay_mapped_address (addr
, section
);
627 /* On some targets, add in extra "flag" bits to PC for
628 disassembly. This should ensure that "rounding errors" in
629 symbol addresses that are masked for disassembly favour the
630 the correct symbol. */
632 #ifdef GDB_TARGET_UNMASK_DISAS_PC
633 addr
= GDB_TARGET_UNMASK_DISAS_PC (addr
);
636 /* First try to find the address in the symbol table, then
637 in the minsyms. Take the closest one. */
639 /* This is defective in the sense that it only finds text symbols. So
640 really this is kind of pointless--we should make sure that the
641 minimal symbols have everything we need (by changing that we could
642 save some memory, but for many debug format--ELF/DWARF or
643 anything/stabs--it would be inconvenient to eliminate those minimal
645 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
646 symbol
= find_pc_sect_function (addr
, section
);
650 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
652 name_temp
= SYMBOL_SOURCE_NAME (symbol
);
654 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
659 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
661 /* The msymbol is closer to the address than the symbol;
662 use the msymbol instead. */
665 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
667 name_temp
= SYMBOL_SOURCE_NAME (msymbol
);
669 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
672 if (symbol
== NULL
&& msymbol
== NULL
)
675 /* On some targets, mask out extra "flag" bits from PC for handsome
678 #ifdef GDB_TARGET_MASK_DISAS_PC
679 name_location
= GDB_TARGET_MASK_DISAS_PC (name_location
);
680 addr
= GDB_TARGET_MASK_DISAS_PC (addr
);
683 /* If the nearest symbol is too far away, don't print anything symbolic. */
685 /* For when CORE_ADDR is larger than unsigned int, we do math in
686 CORE_ADDR. But when we detect unsigned wraparound in the
687 CORE_ADDR math, we ignore this test and print the offset,
688 because addr+max_symbolic_offset has wrapped through the end
689 of the address space back to the beginning, giving bogus comparison. */
690 if (addr
> name_location
+ max_symbolic_offset
691 && name_location
+ max_symbolic_offset
> name_location
)
694 *offset
= addr
- name_location
;
696 *name
= xstrdup (name_temp
);
698 if (print_symbol_filename
)
700 struct symtab_and_line sal
;
702 sal
= find_pc_sect_line (addr
, section
, 0);
706 *filename
= xstrdup (sal
.symtab
->filename
);
709 else if (symtab
&& symbol
&& symbol
->line
)
711 *filename
= xstrdup (symtab
->filename
);
712 *line
= symbol
->line
;
716 *filename
= xstrdup (symtab
->filename
);
723 /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
726 print_address_numeric (CORE_ADDR addr
, int use_local
, struct ui_file
*stream
)
728 /* Truncate address to the size of a target address, avoiding shifts
729 larger or equal than the width of a CORE_ADDR. The local
730 variable ADDR_BIT stops the compiler reporting a shift overflow
731 when it won't occur. */
732 /* NOTE: This assumes that the significant address information is
733 kept in the least significant bits of ADDR - the upper bits were
734 either zero or sign extended. Should ADDRESS_TO_POINTER() or
735 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
737 int addr_bit
= TARGET_ADDR_BIT
;
739 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
740 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
741 print_longest (stream
, 'x', use_local
, (ULONGEST
) addr
);
744 /* Print address ADDR symbolically on STREAM.
745 First print it as a number. Then perhaps print
746 <SYMBOL + OFFSET> after the number. */
749 print_address (CORE_ADDR addr
, struct ui_file
*stream
)
751 print_address_numeric (addr
, 1, stream
);
752 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
755 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
756 controls whether to print the symbolic name "raw" or demangled.
757 Global setting "addressprint" controls whether to print hex address
761 print_address_demangle (CORE_ADDR addr
, struct ui_file
*stream
, int do_demangle
)
765 fprintf_filtered (stream
, "0");
767 else if (addressprint
)
769 print_address_numeric (addr
, 1, stream
);
770 print_address_symbolic (addr
, stream
, do_demangle
, " ");
774 print_address_symbolic (addr
, stream
, do_demangle
, "");
779 /* These are the types that $__ will get after an examine command of one
782 static struct type
*examine_i_type
;
784 static struct type
*examine_b_type
;
785 static struct type
*examine_h_type
;
786 static struct type
*examine_w_type
;
787 static struct type
*examine_g_type
;
789 /* Examine data at address ADDR in format FMT.
790 Fetch it from memory and print on gdb_stdout. */
793 do_examine (struct format_data fmt
, CORE_ADDR addr
, asection
*sect
)
795 register char format
= 0;
797 register int count
= 1;
798 struct type
*val_type
= NULL
;
800 register int maxelts
;
808 /* String or instruction format implies fetch single bytes
809 regardless of the specified size. */
810 if (format
== 's' || format
== 'i')
814 val_type
= examine_i_type
;
815 else if (size
== 'b')
816 val_type
= examine_b_type
;
817 else if (size
== 'h')
818 val_type
= examine_h_type
;
819 else if (size
== 'w')
820 val_type
= examine_w_type
;
821 else if (size
== 'g')
822 val_type
= examine_g_type
;
829 if (format
== 's' || format
== 'i')
832 /* Print as many objects as specified in COUNT, at most maxelts per line,
833 with the address of the next one at the start of each line. */
838 print_address (next_address
, gdb_stdout
);
839 printf_filtered (":");
844 printf_filtered ("\t");
845 /* Note that print_formatted sets next_address for the next
847 last_examine_address
= next_address
;
849 if (last_examine_value
)
850 value_free (last_examine_value
);
852 /* The value to be displayed is not fetched greedily.
853 Instead, to avoid the posibility of a fetched value not
854 being used, its retreval is delayed until the print code
855 uses it. When examining an instruction stream, the
856 disassembler will perform its own memory fetch using just
857 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
858 the disassembler be modified so that LAST_EXAMINE_VALUE
859 is left with the byte sequence from the last complete
860 instruction fetched from memory? */
861 last_examine_value
= value_at_lazy (val_type
, next_address
, sect
);
863 if (last_examine_value
)
864 release_value (last_examine_value
);
866 print_formatted (last_examine_value
, format
, size
, gdb_stdout
);
868 printf_filtered ("\n");
869 gdb_flush (gdb_stdout
);
874 validate_format (struct format_data fmt
, char *cmdname
)
877 error ("Size letters are meaningless in \"%s\" command.", cmdname
);
879 error ("Item count other than 1 is meaningless in \"%s\" command.",
881 if (fmt
.format
== 'i' || fmt
.format
== 's')
882 error ("Format letter \"%c\" is meaningless in \"%s\" command.",
883 fmt
.format
, cmdname
);
886 /* Evaluate string EXP as an expression in the current language and
887 print the resulting value. EXP may contain a format specifier as the
888 first argument ("/x myvar" for example, to print myvar in hex).
892 print_command_1 (char *exp
, int inspect
, int voidprint
)
894 struct expression
*expr
;
895 register struct cleanup
*old_chain
= 0;
896 register char format
= 0;
897 register value_ptr val
;
898 struct format_data fmt
;
901 /* Pass inspect flag to the rest of the print routines in a global (sigh). */
902 inspect_it
= inspect
;
904 if (exp
&& *exp
== '/')
907 fmt
= decode_format (&exp
, last_format
, 0);
908 validate_format (fmt
, "print");
909 last_format
= format
= fmt
.format
;
921 expr
= parse_expression (exp
);
922 old_chain
= make_cleanup (free_current_contents
, &expr
);
924 val
= evaluate_expression (expr
);
926 /* C++: figure out what type we actually want to print it as. */
927 type
= VALUE_TYPE (val
);
930 && (TYPE_CODE (type
) == TYPE_CODE_PTR
931 || TYPE_CODE (type
) == TYPE_CODE_REF
)
932 && (TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_STRUCT
933 || TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_UNION
))
937 v
= value_from_vtable_info (val
, TYPE_TARGET_TYPE (type
));
941 type
= VALUE_TYPE (val
);
946 val
= access_value_history (0);
948 if (voidprint
|| (val
&& VALUE_TYPE (val
) &&
949 TYPE_CODE (VALUE_TYPE (val
)) != TYPE_CODE_VOID
))
951 int histindex
= record_latest_value (val
);
954 annotate_value_history_begin (histindex
, VALUE_TYPE (val
));
956 annotate_value_begin (VALUE_TYPE (val
));
959 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp
, histindex
);
960 else if (histindex
>= 0)
961 printf_filtered ("$%d = ", histindex
);
964 annotate_value_history_value ();
966 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
967 printf_filtered ("\n");
970 annotate_value_history_end ();
972 annotate_value_end ();
975 printf_unfiltered ("\") )\030");
979 do_cleanups (old_chain
);
980 inspect_it
= 0; /* Reset print routines to normal */
985 print_command (char *exp
, int from_tty
)
987 print_command_1 (exp
, 0, 1);
990 /* Same as print, except in epoch, it gets its own window */
993 inspect_command (char *exp
, int from_tty
)
995 extern int epoch_interface
;
997 print_command_1 (exp
, epoch_interface
, 1);
1000 /* Same as print, except it doesn't print void results. */
1003 call_command (char *exp
, int from_tty
)
1005 print_command_1 (exp
, 0, 0);
1010 output_command (char *exp
, int from_tty
)
1012 struct expression
*expr
;
1013 register struct cleanup
*old_chain
;
1014 register char format
= 0;
1015 register value_ptr val
;
1016 struct format_data fmt
;
1018 if (exp
&& *exp
== '/')
1021 fmt
= decode_format (&exp
, 0, 0);
1022 validate_format (fmt
, "output");
1023 format
= fmt
.format
;
1026 expr
= parse_expression (exp
);
1027 old_chain
= make_cleanup (free_current_contents
, &expr
);
1029 val
= evaluate_expression (expr
);
1031 annotate_value_begin (VALUE_TYPE (val
));
1033 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
1035 annotate_value_end ();
1038 gdb_flush (gdb_stdout
);
1040 do_cleanups (old_chain
);
1045 set_command (char *exp
, int from_tty
)
1047 struct expression
*expr
= parse_expression (exp
);
1048 register struct cleanup
*old_chain
=
1049 make_cleanup (free_current_contents
, &expr
);
1050 evaluate_expression (expr
);
1051 do_cleanups (old_chain
);
1056 sym_info (char *arg
, int from_tty
)
1058 struct minimal_symbol
*msymbol
;
1059 struct objfile
*objfile
;
1060 struct obj_section
*osect
;
1062 CORE_ADDR addr
, sect_addr
;
1064 unsigned int offset
;
1067 error_no_arg ("address");
1069 addr
= parse_and_eval_address (arg
);
1070 ALL_OBJSECTIONS (objfile
, osect
)
1072 sect
= osect
->the_bfd_section
;
1073 sect_addr
= overlay_mapped_address (addr
, sect
);
1075 if (osect
->addr
<= sect_addr
&& sect_addr
< osect
->endaddr
&&
1076 (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, sect
)))
1079 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1081 printf_filtered ("%s + %u in ",
1082 SYMBOL_SOURCE_NAME (msymbol
), offset
);
1084 printf_filtered ("%s in ",
1085 SYMBOL_SOURCE_NAME (msymbol
));
1086 if (pc_in_unmapped_range (addr
, sect
))
1087 printf_filtered ("load address range of ");
1088 if (section_is_overlay (sect
))
1089 printf_filtered ("%s overlay ",
1090 section_is_mapped (sect
) ? "mapped" : "unmapped");
1091 printf_filtered ("section %s", sect
->name
);
1092 printf_filtered ("\n");
1096 printf_filtered ("No symbol matches %s.\n", arg
);
1101 address_info (char *exp
, int from_tty
)
1103 register struct symbol
*sym
;
1104 register struct minimal_symbol
*msymbol
;
1106 register long basereg
;
1108 CORE_ADDR load_addr
;
1109 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1110 if exp is a field of `this'. */
1113 error ("Argument required.");
1115 sym
= lookup_symbol (exp
, get_selected_block (), VAR_NAMESPACE
,
1116 &is_a_field_of_this
, (struct symtab
**) NULL
);
1119 if (is_a_field_of_this
)
1121 printf_filtered ("Symbol \"");
1122 fprintf_symbol_filtered (gdb_stdout
, exp
,
1123 current_language
->la_language
, DMGL_ANSI
);
1124 printf_filtered ("\" is a field of the local class variable `this'\n");
1128 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1130 if (msymbol
!= NULL
)
1132 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1134 printf_filtered ("Symbol \"");
1135 fprintf_symbol_filtered (gdb_stdout
, exp
,
1136 current_language
->la_language
, DMGL_ANSI
);
1137 printf_filtered ("\" is at ");
1138 print_address_numeric (load_addr
, 1, gdb_stdout
);
1139 printf_filtered (" in a file compiled without debugging");
1140 section
= SYMBOL_BFD_SECTION (msymbol
);
1141 if (section_is_overlay (section
))
1143 load_addr
= overlay_unmapped_address (load_addr
, section
);
1144 printf_filtered (",\n -- loaded at ");
1145 print_address_numeric (load_addr
, 1, gdb_stdout
);
1146 printf_filtered (" in overlay section %s", section
->name
);
1148 printf_filtered (".\n");
1151 error ("No symbol \"%s\" in current context.", exp
);
1155 printf_filtered ("Symbol \"");
1156 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_NAME (sym
),
1157 current_language
->la_language
, DMGL_ANSI
);
1158 printf_filtered ("\" is ");
1159 val
= SYMBOL_VALUE (sym
);
1160 basereg
= SYMBOL_BASEREG (sym
);
1161 section
= SYMBOL_BFD_SECTION (sym
);
1163 switch (SYMBOL_CLASS (sym
))
1166 case LOC_CONST_BYTES
:
1167 printf_filtered ("constant");
1171 printf_filtered ("a label at address ");
1172 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1174 if (section_is_overlay (section
))
1176 load_addr
= overlay_unmapped_address (load_addr
, section
);
1177 printf_filtered (",\n -- loaded at ");
1178 print_address_numeric (load_addr
, 1, gdb_stdout
);
1179 printf_filtered (" in overlay section %s", section
->name
);
1184 printf_filtered ("a variable in register %s", REGISTER_NAME (val
));
1188 printf_filtered ("static storage at address ");
1189 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1191 if (section_is_overlay (section
))
1193 load_addr
= overlay_unmapped_address (load_addr
, section
);
1194 printf_filtered (",\n -- loaded at ");
1195 print_address_numeric (load_addr
, 1, gdb_stdout
);
1196 printf_filtered (" in overlay section %s", section
->name
);
1201 printf_filtered ("external global (indirect addressing), at address *(");
1202 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1204 printf_filtered (")");
1205 if (section_is_overlay (section
))
1207 load_addr
= overlay_unmapped_address (load_addr
, section
);
1208 printf_filtered (",\n -- loaded at ");
1209 print_address_numeric (load_addr
, 1, gdb_stdout
);
1210 printf_filtered (" in overlay section %s", section
->name
);
1215 printf_filtered ("an argument in register %s", REGISTER_NAME (val
));
1218 case LOC_REGPARM_ADDR
:
1219 printf_filtered ("address of an argument in register %s", REGISTER_NAME (val
));
1223 printf_filtered ("an argument at offset %ld", val
);
1227 printf_filtered ("an argument at frame offset %ld", val
);
1231 printf_filtered ("a local variable at frame offset %ld", val
);
1235 printf_filtered ("a reference argument at offset %ld", val
);
1239 printf_filtered ("a variable at offset %ld from register %s",
1240 val
, REGISTER_NAME (basereg
));
1243 case LOC_BASEREG_ARG
:
1244 printf_filtered ("an argument at offset %ld from register %s",
1245 val
, REGISTER_NAME (basereg
));
1249 printf_filtered ("a typedef");
1253 printf_filtered ("a function at address ");
1254 #ifdef GDB_TARGET_MASK_DISAS_PC
1255 print_address_numeric
1256 (load_addr
= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))),
1259 print_address_numeric (load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
1262 if (section_is_overlay (section
))
1264 load_addr
= overlay_unmapped_address (load_addr
, section
);
1265 printf_filtered (",\n -- loaded at ");
1266 print_address_numeric (load_addr
, 1, gdb_stdout
);
1267 printf_filtered (" in overlay section %s", section
->name
);
1271 case LOC_UNRESOLVED
:
1273 struct minimal_symbol
*msym
;
1275 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, NULL
);
1277 printf_filtered ("unresolved");
1280 section
= SYMBOL_BFD_SECTION (msym
);
1281 printf_filtered ("static storage at address ");
1282 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (msym
),
1284 if (section_is_overlay (section
))
1286 load_addr
= overlay_unmapped_address (load_addr
, section
);
1287 printf_filtered (",\n -- loaded at ");
1288 print_address_numeric (load_addr
, 1, gdb_stdout
);
1289 printf_filtered (" in overlay section %s", section
->name
);
1295 case LOC_THREAD_LOCAL_STATIC
:
1297 "a thread-local variable at offset %ld from the thread base register %s",
1298 val
, REGISTER_NAME (basereg
));
1301 case LOC_OPTIMIZED_OUT
:
1302 printf_filtered ("optimized out");
1306 printf_filtered ("of unknown (botched) type");
1309 printf_filtered (".\n");
1313 x_command (char *exp
, int from_tty
)
1315 struct expression
*expr
;
1316 struct format_data fmt
;
1317 struct cleanup
*old_chain
;
1320 fmt
.format
= last_format
;
1321 fmt
.size
= last_size
;
1324 if (exp
&& *exp
== '/')
1327 fmt
= decode_format (&exp
, last_format
, last_size
);
1330 /* If we have an expression, evaluate it and use it as the address. */
1332 if (exp
!= 0 && *exp
!= 0)
1334 expr
= parse_expression (exp
);
1335 /* Cause expression not to be there any more
1336 if this command is repeated with Newline.
1337 But don't clobber a user-defined command's definition. */
1340 old_chain
= make_cleanup (free_current_contents
, &expr
);
1341 val
= evaluate_expression (expr
);
1342 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_REF
)
1343 val
= value_ind (val
);
1344 /* In rvalue contexts, such as this, functions are coerced into
1345 pointers to functions. This makes "x/i main" work. */
1346 if (/* last_format == 'i' && */
1347 TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_FUNC
1348 && VALUE_LVAL (val
) == lval_memory
)
1349 next_address
= VALUE_ADDRESS (val
);
1351 next_address
= value_as_pointer (val
);
1352 if (VALUE_BFD_SECTION (val
))
1353 next_section
= VALUE_BFD_SECTION (val
);
1354 do_cleanups (old_chain
);
1357 do_examine (fmt
, next_address
, next_section
);
1359 /* If the examine succeeds, we remember its size and format for next time. */
1360 last_size
= fmt
.size
;
1361 last_format
= fmt
.format
;
1363 /* Set a couple of internal variables if appropriate. */
1364 if (last_examine_value
)
1366 /* Make last address examined available to the user as $_. Use
1367 the correct pointer type. */
1368 struct type
*pointer_type
1369 = lookup_pointer_type (VALUE_TYPE (last_examine_value
));
1370 set_internalvar (lookup_internalvar ("_"),
1371 value_from_pointer (pointer_type
,
1372 last_examine_address
));
1374 /* Make contents of last address examined available to the user as $__. */
1375 /* If the last value has not been fetched from memory then don't
1376 fetch it now - instead mark it by voiding the $__ variable. */
1377 if (VALUE_LAZY (last_examine_value
))
1378 set_internalvar (lookup_internalvar ("__"),
1379 allocate_value (builtin_type_void
));
1381 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1386 /* Add an expression to the auto-display chain.
1387 Specify the expression. */
1390 display_command (char *exp
, int from_tty
)
1392 struct format_data fmt
;
1393 register struct expression
*expr
;
1394 register struct display
*new;
1398 if (tui_version
&& *exp
== '$')
1399 display_it
= ((TuiStatus
) tuiDo (
1400 (TuiOpaqueFuncPtr
) tui_vSetLayoutTo
, exp
) == TUI_FAILURE
);
1414 fmt
= decode_format (&exp
, 0, 0);
1415 if (fmt
.size
&& fmt
.format
== 0)
1417 if (fmt
.format
== 'i' || fmt
.format
== 's')
1427 innermost_block
= 0;
1428 expr
= parse_expression (exp
);
1430 new = (struct display
*) xmalloc (sizeof (struct display
));
1433 new->block
= innermost_block
;
1434 new->next
= display_chain
;
1435 new->number
= ++display_number
;
1437 new->status
= enabled
;
1438 display_chain
= new;
1440 if (from_tty
&& target_has_execution
)
1441 do_one_display (new);
1448 free_display (struct display
*d
)
1454 /* Clear out the display_chain.
1455 Done when new symtabs are loaded, since this invalidates
1456 the types stored in many expressions. */
1459 clear_displays (void)
1461 register struct display
*d
;
1463 while ((d
= display_chain
) != NULL
)
1466 display_chain
= d
->next
;
1471 /* Delete the auto-display number NUM. */
1474 delete_display (int num
)
1476 register struct display
*d1
, *d
;
1479 error ("No display number %d.", num
);
1481 if (display_chain
->number
== num
)
1484 display_chain
= d1
->next
;
1488 for (d
= display_chain
;; d
= d
->next
)
1491 error ("No display number %d.", num
);
1492 if (d
->next
->number
== num
)
1502 /* Delete some values from the auto-display chain.
1503 Specify the element numbers. */
1506 undisplay_command (char *args
, int from_tty
)
1508 register char *p
= args
;
1514 if (query ("Delete all auto-display expressions? "))
1523 while (*p1
>= '0' && *p1
<= '9')
1525 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1526 error ("Arguments must be display numbers.");
1530 delete_display (num
);
1533 while (*p
== ' ' || *p
== '\t')
1539 /* Display a single auto-display.
1540 Do nothing if the display cannot be printed in the current context,
1541 or if the display is disabled. */
1544 do_one_display (struct display
*d
)
1546 int within_current_scope
;
1548 if (d
->status
== disabled
)
1552 within_current_scope
= contained_in (get_selected_block (), d
->block
);
1554 within_current_scope
= 1;
1555 if (!within_current_scope
)
1558 current_display_number
= d
->number
;
1560 annotate_display_begin ();
1561 printf_filtered ("%d", d
->number
);
1562 annotate_display_number_end ();
1563 printf_filtered (": ");
1569 annotate_display_format ();
1571 printf_filtered ("x/");
1572 if (d
->format
.count
!= 1)
1573 printf_filtered ("%d", d
->format
.count
);
1574 printf_filtered ("%c", d
->format
.format
);
1575 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1576 printf_filtered ("%c", d
->format
.size
);
1577 printf_filtered (" ");
1579 annotate_display_expression ();
1581 print_expression (d
->exp
, gdb_stdout
);
1582 annotate_display_expression_end ();
1584 if (d
->format
.count
!= 1)
1585 printf_filtered ("\n");
1587 printf_filtered (" ");
1589 val
= evaluate_expression (d
->exp
);
1590 addr
= value_as_pointer (val
);
1591 if (d
->format
.format
== 'i')
1592 addr
= ADDR_BITS_REMOVE (addr
);
1594 annotate_display_value ();
1596 do_examine (d
->format
, addr
, VALUE_BFD_SECTION (val
));
1600 annotate_display_format ();
1602 if (d
->format
.format
)
1603 printf_filtered ("/%c ", d
->format
.format
);
1605 annotate_display_expression ();
1607 print_expression (d
->exp
, gdb_stdout
);
1608 annotate_display_expression_end ();
1610 printf_filtered (" = ");
1612 annotate_display_expression ();
1614 print_formatted (evaluate_expression (d
->exp
),
1615 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1616 printf_filtered ("\n");
1619 annotate_display_end ();
1621 gdb_flush (gdb_stdout
);
1622 current_display_number
= -1;
1625 /* Display all of the values on the auto-display chain which can be
1626 evaluated in the current scope. */
1631 register struct display
*d
;
1633 for (d
= display_chain
; d
; d
= d
->next
)
1637 /* Delete the auto-display which we were in the process of displaying.
1638 This is done when there is an error or a signal. */
1641 disable_display (int num
)
1643 register struct display
*d
;
1645 for (d
= display_chain
; d
; d
= d
->next
)
1646 if (d
->number
== num
)
1648 d
->status
= disabled
;
1651 printf_unfiltered ("No display number %d.\n", num
);
1655 disable_current_display (void)
1657 if (current_display_number
>= 0)
1659 disable_display (current_display_number
);
1660 fprintf_unfiltered (gdb_stderr
, "Disabling display %d to avoid infinite recursion.\n",
1661 current_display_number
);
1663 current_display_number
= -1;
1667 display_info (char *ignore
, int from_tty
)
1669 register struct display
*d
;
1672 printf_unfiltered ("There are no auto-display expressions now.\n");
1674 printf_filtered ("Auto-display expressions now in effect:\n\
1675 Num Enb Expression\n");
1677 for (d
= display_chain
; d
; d
= d
->next
)
1679 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->status
]);
1681 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1683 else if (d
->format
.format
)
1684 printf_filtered ("/%c ", d
->format
.format
);
1685 print_expression (d
->exp
, gdb_stdout
);
1686 if (d
->block
&& !contained_in (get_selected_block (), d
->block
))
1687 printf_filtered (" (cannot be evaluated in the current context)");
1688 printf_filtered ("\n");
1689 gdb_flush (gdb_stdout
);
1694 enable_display (char *args
, int from_tty
)
1696 register char *p
= args
;
1699 register struct display
*d
;
1703 for (d
= display_chain
; d
; d
= d
->next
)
1704 d
->status
= enabled
;
1710 while (*p1
>= '0' && *p1
<= '9')
1712 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1713 error ("Arguments must be display numbers.");
1717 for (d
= display_chain
; d
; d
= d
->next
)
1718 if (d
->number
== num
)
1720 d
->status
= enabled
;
1723 printf_unfiltered ("No display number %d.\n", num
);
1726 while (*p
== ' ' || *p
== '\t')
1733 disable_display_command (char *args
, int from_tty
)
1735 register char *p
= args
;
1737 register struct display
*d
;
1741 for (d
= display_chain
; d
; d
= d
->next
)
1742 d
->status
= disabled
;
1748 while (*p1
>= '0' && *p1
<= '9')
1750 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1751 error ("Arguments must be display numbers.");
1753 disable_display (atoi (p
));
1756 while (*p
== ' ' || *p
== '\t')
1762 /* Print the value in stack frame FRAME of a variable
1763 specified by a struct symbol. */
1766 print_variable_value (struct symbol
*var
, struct frame_info
*frame
,
1767 struct ui_file
*stream
)
1769 value_ptr val
= read_var_value (var
, frame
);
1771 value_print (val
, stream
, 0, Val_pretty_default
);
1774 /* Print the arguments of a stack frame, given the function FUNC
1775 running in that frame (as a symbol), the info on the frame,
1776 and the number of args according to the stack frame (or -1 if unknown). */
1778 /* References here and elsewhere to "number of args according to the
1779 stack frame" appear in all cases to refer to "number of ints of args
1780 according to the stack frame". At least for VAX, i386, isi. */
1783 print_frame_args (struct symbol
*func
, struct frame_info
*fi
, int num
,
1784 struct ui_file
*stream
)
1786 struct block
*b
= NULL
;
1790 register struct symbol
*sym
;
1791 register value_ptr val
;
1792 /* Offset of next stack argument beyond the one we have seen that is
1793 at the highest offset.
1794 -1 if we haven't come to a stack argument yet. */
1795 long highest_offset
= -1;
1797 /* Number of ints of arguments that we have printed so far. */
1798 int args_printed
= 0;
1800 struct cleanup
*old_chain
, *list_chain
;
1801 struct ui_stream
*stb
;
1803 stb
= ui_out_stream_new (uiout
);
1804 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1809 b
= SYMBOL_BLOCK_VALUE (func
);
1810 nsyms
= BLOCK_NSYMS (b
);
1813 for (i
= 0; i
< nsyms
; i
++)
1816 sym
= BLOCK_SYM (b
, i
);
1818 /* Keep track of the highest stack argument offset seen, and
1819 skip over any kinds of symbols we don't care about. */
1821 switch (SYMBOL_CLASS (sym
))
1826 long current_offset
= SYMBOL_VALUE (sym
);
1827 arg_size
= TYPE_LENGTH (SYMBOL_TYPE (sym
));
1829 /* Compute address of next argument by adding the size of
1830 this argument and rounding to an int boundary. */
1832 ((current_offset
+ arg_size
+ sizeof (int) - 1)
1833 & ~(sizeof (int) - 1));
1835 /* If this is the highest offset seen yet, set highest_offset. */
1836 if (highest_offset
== -1
1837 || (current_offset
> highest_offset
))
1838 highest_offset
= current_offset
;
1840 /* Add the number of ints we're about to print to args_printed. */
1841 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
1844 /* We care about types of symbols, but don't need to keep track of
1845 stack offsets in them. */
1847 case LOC_REGPARM_ADDR
:
1849 case LOC_BASEREG_ARG
:
1852 /* Other types of symbols we just skip over. */
1857 /* We have to look up the symbol because arguments can have
1858 two entries (one a parameter, one a local) and the one we
1859 want is the local, which lookup_symbol will find for us.
1860 This includes gcc1 (not gcc2) on the sparc when passing a
1861 small structure and gcc2 when the argument type is float
1862 and it is passed as a double and converted to float by
1863 the prologue (in the latter case the type of the LOC_ARG
1864 symbol is double and the type of the LOC_LOCAL symbol is
1866 /* But if the parameter name is null, don't try it.
1867 Null parameter names occur on the RS/6000, for traceback tables.
1868 FIXME, should we even print them? */
1870 if (*SYMBOL_NAME (sym
))
1872 struct symbol
*nsym
;
1873 nsym
= lookup_symbol
1875 b
, VAR_NAMESPACE
, (int *) NULL
, (struct symtab
**) NULL
);
1876 if (SYMBOL_CLASS (nsym
) == LOC_REGISTER
)
1878 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1879 it was passed on the stack and loaded into a register,
1880 or passed in a register and stored in a stack slot.
1881 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1883 Reasons for using the LOC_ARG:
1884 (1) because find_saved_registers may be slow for remote
1886 (2) because registers are often re-used and stack slots
1887 rarely (never?) are. Therefore using the stack slot is
1888 much less likely to print garbage.
1890 Reasons why we might want to use the LOC_REGISTER:
1891 (1) So that the backtrace prints the same value as
1892 "print foo". I see no compelling reason why this needs
1893 to be the case; having the backtrace print the value which
1894 was passed in, and "print foo" print the value as modified
1895 within the called function, makes perfect sense to me.
1897 Additional note: It might be nice if "info args" displayed
1899 One more note: There is a case with sparc structure passing
1900 where we need to use the LOC_REGISTER, but this is dealt with
1901 by creating a single LOC_REGPARM in symbol reading. */
1903 /* Leave sym (the LOC_ARG) alone. */
1911 /* Print the current arg. */
1913 ui_out_text (uiout
, ", ");
1914 ui_out_wrap_hint (uiout
, " ");
1916 annotate_arg_begin ();
1918 list_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, NULL
);
1919 fprintf_symbol_filtered (stb
->stream
, SYMBOL_SOURCE_NAME (sym
),
1920 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1921 ui_out_field_stream (uiout
, "name", stb
);
1922 annotate_arg_name_end ();
1923 ui_out_text (uiout
, "=");
1925 /* Print the current arg. */
1927 fprintf_filtered (stream
, ", ");
1930 annotate_arg_begin ();
1932 fprintf_symbol_filtered (stream
, SYMBOL_SOURCE_NAME (sym
),
1933 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1934 annotate_arg_name_end ();
1935 fputs_filtered ("=", stream
);
1938 /* Avoid value_print because it will deref ref parameters. We just
1939 want to print their addresses. Print ??? for args whose address
1940 we do not know. We pass 2 as "recurse" to val_print because our
1941 standard indentation here is 4 spaces, and val_print indents
1942 2 for each recurse. */
1943 val
= read_var_value (sym
, fi
);
1945 annotate_arg_value (val
== NULL
? NULL
: VALUE_TYPE (val
));
1950 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
1951 VALUE_ADDRESS (val
),
1952 stb
->stream
, 0, 0, 2, Val_no_prettyprint
);
1953 ui_out_field_stream (uiout
, "value", stb
);
1956 ui_out_text (uiout
, "???");
1958 /* Invoke ui_out_tuple_end. */
1959 do_cleanups (list_chain
);
1961 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
1962 VALUE_ADDRESS (val
),
1963 stream
, 0, 0, 2, Val_no_prettyprint
);
1966 fputs_filtered ("???", stream
);
1969 annotate_arg_end ();
1974 /* Don't print nameless args in situations where we don't know
1975 enough about the stack to find them. */
1980 if (highest_offset
== -1)
1981 start
= FRAME_ARGS_SKIP
;
1983 start
= highest_offset
;
1985 print_frame_nameless_args (fi
, start
, num
- args_printed
,
1989 do_cleanups (old_chain
);
1990 #endif /* no UI_OUT */
1993 /* Print nameless args on STREAM.
1994 FI is the frameinfo for this frame, START is the offset
1995 of the first nameless arg, and NUM is the number of nameless args to
1996 print. FIRST is nonzero if this is the first argument (not just
1997 the first nameless arg). */
2000 print_frame_nameless_args (struct frame_info
*fi
, long start
, int num
,
2001 int first
, struct ui_file
*stream
)
2007 for (i
= 0; i
< num
; i
++)
2010 #ifdef NAMELESS_ARG_VALUE
2011 NAMELESS_ARG_VALUE (fi
, start
, &arg_value
);
2013 argsaddr
= FRAME_ARGS_ADDRESS (fi
);
2017 arg_value
= read_memory_integer (argsaddr
+ start
, sizeof (int));
2021 fprintf_filtered (stream
, ", ");
2023 #ifdef PRINT_NAMELESS_INTEGER
2024 PRINT_NAMELESS_INTEGER (stream
, arg_value
);
2026 #ifdef PRINT_TYPELESS_INTEGER
2027 PRINT_TYPELESS_INTEGER (stream
, builtin_type_int
, (LONGEST
) arg_value
);
2029 fprintf_filtered (stream
, "%ld", arg_value
);
2030 #endif /* PRINT_TYPELESS_INTEGER */
2031 #endif /* PRINT_NAMELESS_INTEGER */
2033 start
+= sizeof (int);
2039 printf_command (char *arg
, int from_tty
)
2041 register char *f
= NULL
;
2042 register char *s
= arg
;
2043 char *string
= NULL
;
2044 value_ptr
*val_args
;
2046 char *current_substring
;
2048 int allocated_args
= 20;
2049 struct cleanup
*old_cleanups
;
2051 val_args
= (value_ptr
*) xmalloc (allocated_args
* sizeof (value_ptr
));
2052 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
2055 error_no_arg ("format-control string and values to print");
2057 /* Skip white space before format string */
2058 while (*s
== ' ' || *s
== '\t')
2061 /* A format string should follow, enveloped in double quotes */
2063 error ("Bad format string, missing '\"'.");
2065 /* Parse the format-control string and copy it into the string STRING,
2066 processing some kinds of escape sequence. */
2068 f
= string
= (char *) alloca (strlen (s
) + 1);
2076 error ("Bad format string, non-terminated '\"'.");
2109 /* ??? TODO: handle other escape sequences */
2110 error ("Unrecognized escape character \\%c in format string.",
2120 /* Skip over " and following space and comma. */
2123 while (*s
== ' ' || *s
== '\t')
2126 if (*s
!= ',' && *s
!= 0)
2127 error ("Invalid argument syntax");
2131 while (*s
== ' ' || *s
== '\t')
2134 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2135 substrings
= alloca (strlen (string
) * 2);
2136 current_substring
= substrings
;
2139 /* Now scan the string for %-specs and see what kinds of args they want.
2140 argclass[I] classifies the %-specs so we can give printf_filtered
2141 something of the right size. */
2145 no_arg
, int_arg
, string_arg
, double_arg
, long_long_arg
2147 enum argclass
*argclass
;
2148 enum argclass this_argclass
;
2154 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
2162 while (strchr ("0123456789.hlL-+ #", *f
))
2164 if (*f
== 'l' || *f
== 'L')
2171 this_argclass
= string_arg
;
2177 this_argclass
= double_arg
;
2181 error ("`*' not supported for precision or width in printf");
2184 error ("Format specifier `n' not supported in printf");
2187 this_argclass
= no_arg
;
2192 this_argclass
= long_long_arg
;
2194 this_argclass
= int_arg
;
2198 if (this_argclass
!= no_arg
)
2200 strncpy (current_substring
, last_arg
, f
- last_arg
);
2201 current_substring
+= f
- last_arg
;
2202 *current_substring
++ = '\0';
2204 argclass
[nargs_wanted
++] = this_argclass
;
2208 /* Now, parse all arguments and evaluate them.
2209 Store the VALUEs in VAL_ARGS. */
2214 if (nargs
== allocated_args
)
2215 val_args
= (value_ptr
*) xrealloc ((char *) val_args
,
2216 (allocated_args
*= 2)
2217 * sizeof (value_ptr
));
2219 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2221 /* If format string wants a float, unchecked-convert the value to
2222 floating point of the same size */
2224 if (argclass
[nargs
] == double_arg
)
2226 struct type
*type
= VALUE_TYPE (val_args
[nargs
]);
2227 if (TYPE_LENGTH (type
) == sizeof (float))
2228 VALUE_TYPE (val_args
[nargs
]) = builtin_type_float
;
2229 if (TYPE_LENGTH (type
) == sizeof (double))
2230 VALUE_TYPE (val_args
[nargs
]) = builtin_type_double
;
2238 if (nargs
!= nargs_wanted
)
2239 error ("Wrong number of arguments for specified format-string");
2241 /* Now actually print them. */
2242 current_substring
= substrings
;
2243 for (i
= 0; i
< nargs
; i
++)
2245 switch (argclass
[i
])
2252 tem
= value_as_pointer (val_args
[i
]);
2254 /* This is a %s argument. Find the length of the string. */
2259 read_memory (tem
+ j
, &c
, 1);
2264 /* Copy the string contents into a string inside GDB. */
2265 str
= (char *) alloca (j
+ 1);
2267 read_memory (tem
, str
, j
);
2270 printf_filtered (current_substring
, str
);
2275 double val
= value_as_double (val_args
[i
]);
2276 printf_filtered (current_substring
, val
);
2280 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2282 long long val
= value_as_long (val_args
[i
]);
2283 printf_filtered (current_substring
, val
);
2287 error ("long long not supported in printf");
2291 /* FIXME: there should be separate int_arg and long_arg. */
2292 long val
= value_as_long (val_args
[i
]);
2293 printf_filtered (current_substring
, val
);
2296 default: /* purecov: deadcode */
2297 error ("internal error in printf_command"); /* purecov: deadcode */
2299 /* Skip to the next substring. */
2300 current_substring
+= strlen (current_substring
) + 1;
2302 /* Print the portion of the format string after the last argument. */
2303 printf_filtered (last_arg
);
2305 do_cleanups (old_cleanups
);
2308 /* Dump a specified section of assembly code. With no command line
2309 arguments, this command will dump the assembly code for the
2310 function surrounding the pc value in the selected frame. With one
2311 argument, it will dump the assembly code surrounding that pc value.
2312 Two arguments are interpeted as bounds within which to dump
2317 disassemble_command (char *arg
, int from_tty
)
2319 CORE_ADDR low
, high
;
2321 CORE_ADDR pc
, pc_masked
;
2330 if (!selected_frame
)
2331 error ("No frame selected.\n");
2333 pc
= get_frame_pc (selected_frame
);
2334 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2335 error ("No function contains program counter for selected frame.\n");
2337 else if (tui_version
)
2338 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2342 low
+= FUNCTION_START_OFFSET
;
2344 else if (!(space_index
= (char *) strchr (arg
, ' ')))
2347 pc
= parse_and_eval_address (arg
);
2348 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2349 error ("No function contains specified address.\n");
2351 else if (tui_version
)
2352 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2357 if (overlay_debugging
)
2359 section
= find_pc_overlay (pc
);
2360 if (pc_in_unmapped_range (pc
, section
))
2362 /* find_pc_partial_function will have returned low and high
2363 relative to the symbolic (mapped) address range. Need to
2364 translate them back to the unmapped range where PC is. */
2365 low
= overlay_unmapped_address (low
, section
);
2366 high
= overlay_unmapped_address (high
, section
);
2370 low
+= FUNCTION_START_OFFSET
;
2374 /* Two arguments. */
2375 *space_index
= '\0';
2376 low
= parse_and_eval_address (arg
);
2377 high
= parse_and_eval_address (space_index
+ 1);
2382 m_winPtrIsNull (disassemWin
) || !disassemWin
->generic
.isVisible
)
2385 printf_filtered ("Dump of assembler code ");
2388 printf_filtered ("for function %s:\n", name
);
2392 printf_filtered ("from ");
2393 print_address_numeric (low
, 1, gdb_stdout
);
2394 printf_filtered (" to ");
2395 print_address_numeric (high
, 1, gdb_stdout
);
2396 printf_filtered (":\n");
2399 /* Dump the specified range. */
2402 #ifdef GDB_TARGET_MASK_DISAS_PC
2403 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2408 while (pc_masked
< high
)
2411 print_address (pc_masked
, gdb_stdout
);
2412 printf_filtered (":\t");
2413 /* We often wrap here if there are long symbolic names. */
2415 pc
+= print_insn (pc
, gdb_stdout
);
2416 printf_filtered ("\n");
2418 #ifdef GDB_TARGET_MASK_DISAS_PC
2419 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2424 printf_filtered ("End of assembler dump.\n");
2425 gdb_flush (gdb_stdout
);
2430 tuiDo ((TuiOpaqueFuncPtr
) tui_vAddWinToLayout
, DISASSEM_WIN
);
2431 tuiDo ((TuiOpaqueFuncPtr
) tui_vUpdateSourceWindowsWithAddr
, low
);
2436 /* Print the instruction at address MEMADDR in debugged memory,
2437 on STREAM. Returns length of the instruction, in bytes. */
2440 print_insn (CORE_ADDR memaddr
, struct ui_file
*stream
)
2442 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2443 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_BIG
;
2445 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_LITTLE
;
2447 if (TARGET_ARCHITECTURE
!= NULL
)
2448 TARGET_PRINT_INSN_INFO
->mach
= TARGET_ARCHITECTURE
->mach
;
2449 /* else: should set .mach=0 but some disassemblers don't grok this */
2451 return TARGET_PRINT_INSN (memaddr
, TARGET_PRINT_INSN_INFO
);
2456 _initialize_printcmd (void)
2458 struct cmd_list_element
*c
;
2460 current_display_number
= -1;
2462 add_info ("address", address_info
,
2463 "Describe where symbol SYM is stored.");
2465 add_info ("symbol", sym_info
,
2466 "Describe what symbol is at location ADDR.\n\
2467 Only for symbols with fixed locations (global or static scope).");
2469 add_com ("x", class_vars
, x_command
,
2470 concat ("Examine memory: x/FMT ADDRESS.\n\
2471 ADDRESS is an expression for the memory address to examine.\n\
2472 FMT is a repeat count followed by a format letter and a size letter.\n\
2473 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2474 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
2475 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2476 The specified number of objects of the specified size are printed\n\
2477 according to the format.\n\n\
2478 Defaults for format and size letters are those previously used.\n\
2479 Default count is 1. Default address is following last thing printed\n\
2480 with this command or \"print\".", NULL
));
2482 c
= add_com ("disassemble", class_vars
, disassemble_command
,
2483 "Disassemble a specified section of memory.\n\
2484 Default is the function surrounding the pc of the selected frame.\n\
2485 With a single argument, the function surrounding that address is dumped.\n\
2486 Two arguments are taken as a range of memory to dump.");
2487 c
->completer
= location_completer
;
2489 add_com_alias ("va", "disassemble", class_xdb
, 0);
2492 add_com ("whereis", class_vars
, whereis_command
,
2493 "Print line number and file of definition of variable.");
2496 add_info ("display", display_info
,
2497 "Expressions to display when program stops, with code numbers.");
2499 add_cmd ("undisplay", class_vars
, undisplay_command
,
2500 "Cancel some expressions to be displayed when program stops.\n\
2501 Arguments are the code numbers of the expressions to stop displaying.\n\
2502 No argument means cancel all automatic-display expressions.\n\
2503 \"delete display\" has the same effect as this command.\n\
2504 Do \"info display\" to see current list of code numbers.",
2507 add_com ("display", class_vars
, display_command
,
2508 "Print value of expression EXP each time the program stops.\n\
2509 /FMT may be used before EXP as in the \"print\" command.\n\
2510 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2511 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2512 and examining is done as in the \"x\" command.\n\n\
2513 With no argument, display all currently requested auto-display expressions.\n\
2514 Use \"undisplay\" to cancel display requests previously made."
2517 add_cmd ("display", class_vars
, enable_display
,
2518 "Enable some expressions to be displayed when program stops.\n\
2519 Arguments are the code numbers of the expressions to resume displaying.\n\
2520 No argument means enable all automatic-display expressions.\n\
2521 Do \"info display\" to see current list of code numbers.", &enablelist
);
2523 add_cmd ("display", class_vars
, disable_display_command
,
2524 "Disable some expressions to be displayed when program stops.\n\
2525 Arguments are the code numbers of the expressions to stop displaying.\n\
2526 No argument means disable all automatic-display expressions.\n\
2527 Do \"info display\" to see current list of code numbers.", &disablelist
);
2529 add_cmd ("display", class_vars
, undisplay_command
,
2530 "Cancel some expressions to be displayed when program stops.\n\
2531 Arguments are the code numbers of the expressions to stop displaying.\n\
2532 No argument means cancel all automatic-display expressions.\n\
2533 Do \"info display\" to see current list of code numbers.", &deletelist
);
2535 add_com ("printf", class_vars
, printf_command
,
2536 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2537 This is useful for formatted output in user-defined commands.");
2539 add_com ("output", class_vars
, output_command
,
2540 "Like \"print\" but don't put in value history and don't print newline.\n\
2541 This is useful in user-defined commands.");
2543 add_prefix_cmd ("set", class_vars
, set_command
,
2544 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2545 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2546 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2547 with $), a register (a few standard names starting with $), or an actual\n\
2548 variable in the program being debugged. EXP is any valid expression.\n",
2549 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2550 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2551 You can see these environment settings with the \"show\" command.", NULL
),
2552 &setlist
, "set ", 1, &cmdlist
);
2554 add_com ("assign", class_vars
, set_command
, concat ("Evaluate expression \
2555 EXP and assign result to variable VAR, using assignment\n\
2556 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2557 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2558 with $), a register (a few standard names starting with $), or an actual\n\
2559 variable in the program being debugged. EXP is any valid expression.\n",
2560 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2561 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2562 You can see these environment settings with the \"show\" command.", NULL
));
2564 /* "call" is the same as "set", but handy for dbx users to call fns. */
2565 c
= add_com ("call", class_vars
, call_command
,
2566 "Call a function in the program.\n\
2567 The argument is the function name and arguments, in the notation of the\n\
2568 current working language. The result is printed and saved in the value\n\
2569 history, if it is not void.");
2570 c
->completer
= location_completer
;
2572 add_cmd ("variable", class_vars
, set_command
,
2573 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2574 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2575 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2576 with $), a register (a few standard names starting with $), or an actual\n\
2577 variable in the program being debugged. EXP is any valid expression.\n\
2578 This may usually be abbreviated to simply \"set\".",
2581 c
= add_com ("print", class_vars
, print_command
,
2582 concat ("Print value of expression EXP.\n\
2583 Variables accessible are those of the lexical environment of the selected\n\
2584 stack frame, plus all those whose scope is global or an entire file.\n\
2586 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2587 $$NUM refers to NUM'th value back from the last one.\n\
2588 Names starting with $ refer to registers (with the values they would have\n",
2589 "if the program were to return to the stack frame now selected, restoring\n\
2590 all registers saved by frames farther in) or else to debugger\n\
2591 \"convenience\" variables (any such name not a known register).\n\
2592 Use assignment expressions to give values to convenience variables.\n",
2594 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2595 @ is a binary operator for treating consecutive data objects\n\
2596 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2597 element is FOO, whose second element is stored in the space following\n\
2598 where FOO is stored, etc. FOO must be an expression whose value\n\
2599 resides in memory.\n",
2601 EXP may be preceded with /FMT, where FMT is a format letter\n\
2602 but no count or size letter (see \"x\" command).", NULL
));
2603 c
->completer
= location_completer
;
2604 add_com_alias ("p", "print", class_vars
, 1);
2606 c
= add_com ("inspect", class_vars
, inspect_command
,
2607 "Same as \"print\" command, except that if you are running in the epoch\n\
2608 environment, the value is printed in its own window.");
2609 c
->completer
= location_completer
;
2612 add_set_cmd ("max-symbolic-offset", no_class
, var_uinteger
,
2613 (char *) &max_symbolic_offset
,
2614 "Set the largest offset that will be printed in <symbol+1234> form.",
2618 add_set_cmd ("symbol-filename", no_class
, var_boolean
,
2619 (char *) &print_symbol_filename
,
2620 "Set printing of source filename and line number with <symbol>.",
2624 /* For examine/instruction a single byte quantity is specified as
2625 the data. This avoids problems with value_at_lazy() requiring a
2626 valid data type (and rejecting VOID). */
2627 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2629 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2630 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2631 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2632 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);