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
= (tui_set_layout (exp
) == TUI_FAILURE
);
1413 fmt
= decode_format (&exp
, 0, 0);
1414 if (fmt
.size
&& fmt
.format
== 0)
1416 if (fmt
.format
== 'i' || fmt
.format
== 's')
1426 innermost_block
= 0;
1427 expr
= parse_expression (exp
);
1429 new = (struct display
*) xmalloc (sizeof (struct display
));
1432 new->block
= innermost_block
;
1433 new->next
= display_chain
;
1434 new->number
= ++display_number
;
1437 display_chain
= new;
1439 if (from_tty
&& target_has_execution
)
1440 do_one_display (new);
1447 free_display (struct display
*d
)
1453 /* Clear out the display_chain.
1454 Done when new symtabs are loaded, since this invalidates
1455 the types stored in many expressions. */
1458 clear_displays (void)
1460 register struct display
*d
;
1462 while ((d
= display_chain
) != NULL
)
1465 display_chain
= d
->next
;
1470 /* Delete the auto-display number NUM. */
1473 delete_display (int num
)
1475 register struct display
*d1
, *d
;
1478 error ("No display number %d.", num
);
1480 if (display_chain
->number
== num
)
1483 display_chain
= d1
->next
;
1487 for (d
= display_chain
;; d
= d
->next
)
1490 error ("No display number %d.", num
);
1491 if (d
->next
->number
== num
)
1501 /* Delete some values from the auto-display chain.
1502 Specify the element numbers. */
1505 undisplay_command (char *args
, int from_tty
)
1507 register char *p
= args
;
1513 if (query ("Delete all auto-display expressions? "))
1522 while (*p1
>= '0' && *p1
<= '9')
1524 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1525 error ("Arguments must be display numbers.");
1529 delete_display (num
);
1532 while (*p
== ' ' || *p
== '\t')
1538 /* Display a single auto-display.
1539 Do nothing if the display cannot be printed in the current context,
1540 or if the display is disabled. */
1543 do_one_display (struct display
*d
)
1545 int within_current_scope
;
1547 if (d
->enabled_p
== 0)
1551 within_current_scope
= contained_in (get_selected_block (), d
->block
);
1553 within_current_scope
= 1;
1554 if (!within_current_scope
)
1557 current_display_number
= d
->number
;
1559 annotate_display_begin ();
1560 printf_filtered ("%d", d
->number
);
1561 annotate_display_number_end ();
1562 printf_filtered (": ");
1568 annotate_display_format ();
1570 printf_filtered ("x/");
1571 if (d
->format
.count
!= 1)
1572 printf_filtered ("%d", d
->format
.count
);
1573 printf_filtered ("%c", d
->format
.format
);
1574 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1575 printf_filtered ("%c", d
->format
.size
);
1576 printf_filtered (" ");
1578 annotate_display_expression ();
1580 print_expression (d
->exp
, gdb_stdout
);
1581 annotate_display_expression_end ();
1583 if (d
->format
.count
!= 1)
1584 printf_filtered ("\n");
1586 printf_filtered (" ");
1588 val
= evaluate_expression (d
->exp
);
1589 addr
= value_as_pointer (val
);
1590 if (d
->format
.format
== 'i')
1591 addr
= ADDR_BITS_REMOVE (addr
);
1593 annotate_display_value ();
1595 do_examine (d
->format
, addr
, VALUE_BFD_SECTION (val
));
1599 annotate_display_format ();
1601 if (d
->format
.format
)
1602 printf_filtered ("/%c ", d
->format
.format
);
1604 annotate_display_expression ();
1606 print_expression (d
->exp
, gdb_stdout
);
1607 annotate_display_expression_end ();
1609 printf_filtered (" = ");
1611 annotate_display_expression ();
1613 print_formatted (evaluate_expression (d
->exp
),
1614 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1615 printf_filtered ("\n");
1618 annotate_display_end ();
1620 gdb_flush (gdb_stdout
);
1621 current_display_number
= -1;
1624 /* Display all of the values on the auto-display chain which can be
1625 evaluated in the current scope. */
1630 register struct display
*d
;
1632 for (d
= display_chain
; d
; d
= d
->next
)
1636 /* Delete the auto-display which we were in the process of displaying.
1637 This is done when there is an error or a signal. */
1640 disable_display (int num
)
1642 register struct display
*d
;
1644 for (d
= display_chain
; d
; d
= d
->next
)
1645 if (d
->number
== num
)
1650 printf_unfiltered ("No display number %d.\n", num
);
1654 disable_current_display (void)
1656 if (current_display_number
>= 0)
1658 disable_display (current_display_number
);
1659 fprintf_unfiltered (gdb_stderr
, "Disabling display %d to avoid infinite recursion.\n",
1660 current_display_number
);
1662 current_display_number
= -1;
1666 display_info (char *ignore
, int from_tty
)
1668 register struct display
*d
;
1671 printf_unfiltered ("There are no auto-display expressions now.\n");
1673 printf_filtered ("Auto-display expressions now in effect:\n\
1674 Num Enb Expression\n");
1676 for (d
= display_chain
; d
; d
= d
->next
)
1678 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->enabled_p
]);
1680 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1682 else if (d
->format
.format
)
1683 printf_filtered ("/%c ", d
->format
.format
);
1684 print_expression (d
->exp
, gdb_stdout
);
1685 if (d
->block
&& !contained_in (get_selected_block (), d
->block
))
1686 printf_filtered (" (cannot be evaluated in the current context)");
1687 printf_filtered ("\n");
1688 gdb_flush (gdb_stdout
);
1693 enable_display (char *args
, int from_tty
)
1695 register char *p
= args
;
1698 register struct display
*d
;
1702 for (d
= display_chain
; d
; d
= d
->next
)
1709 while (*p1
>= '0' && *p1
<= '9')
1711 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1712 error ("Arguments must be display numbers.");
1716 for (d
= display_chain
; d
; d
= d
->next
)
1717 if (d
->number
== num
)
1722 printf_unfiltered ("No display number %d.\n", num
);
1725 while (*p
== ' ' || *p
== '\t')
1732 disable_display_command (char *args
, int from_tty
)
1734 register char *p
= args
;
1736 register struct display
*d
;
1740 for (d
= display_chain
; d
; d
= d
->next
)
1747 while (*p1
>= '0' && *p1
<= '9')
1749 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1750 error ("Arguments must be display numbers.");
1752 disable_display (atoi (p
));
1755 while (*p
== ' ' || *p
== '\t')
1761 /* Print the value in stack frame FRAME of a variable
1762 specified by a struct symbol. */
1765 print_variable_value (struct symbol
*var
, struct frame_info
*frame
,
1766 struct ui_file
*stream
)
1768 value_ptr val
= read_var_value (var
, frame
);
1770 value_print (val
, stream
, 0, Val_pretty_default
);
1773 /* Print the arguments of a stack frame, given the function FUNC
1774 running in that frame (as a symbol), the info on the frame,
1775 and the number of args according to the stack frame (or -1 if unknown). */
1777 /* References here and elsewhere to "number of args according to the
1778 stack frame" appear in all cases to refer to "number of ints of args
1779 according to the stack frame". At least for VAX, i386, isi. */
1782 print_frame_args (struct symbol
*func
, struct frame_info
*fi
, int num
,
1783 struct ui_file
*stream
)
1785 struct block
*b
= NULL
;
1789 register struct symbol
*sym
;
1790 register value_ptr val
;
1791 /* Offset of next stack argument beyond the one we have seen that is
1792 at the highest offset.
1793 -1 if we haven't come to a stack argument yet. */
1794 long highest_offset
= -1;
1796 /* Number of ints of arguments that we have printed so far. */
1797 int args_printed
= 0;
1799 struct cleanup
*old_chain
, *list_chain
;
1800 struct ui_stream
*stb
;
1802 stb
= ui_out_stream_new (uiout
);
1803 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1808 b
= SYMBOL_BLOCK_VALUE (func
);
1809 nsyms
= BLOCK_NSYMS (b
);
1812 for (i
= 0; i
< nsyms
; i
++)
1815 sym
= BLOCK_SYM (b
, i
);
1817 /* Keep track of the highest stack argument offset seen, and
1818 skip over any kinds of symbols we don't care about. */
1820 switch (SYMBOL_CLASS (sym
))
1825 long current_offset
= SYMBOL_VALUE (sym
);
1826 arg_size
= TYPE_LENGTH (SYMBOL_TYPE (sym
));
1828 /* Compute address of next argument by adding the size of
1829 this argument and rounding to an int boundary. */
1831 ((current_offset
+ arg_size
+ sizeof (int) - 1)
1832 & ~(sizeof (int) - 1));
1834 /* If this is the highest offset seen yet, set highest_offset. */
1835 if (highest_offset
== -1
1836 || (current_offset
> highest_offset
))
1837 highest_offset
= current_offset
;
1839 /* Add the number of ints we're about to print to args_printed. */
1840 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
1843 /* We care about types of symbols, but don't need to keep track of
1844 stack offsets in them. */
1846 case LOC_REGPARM_ADDR
:
1848 case LOC_BASEREG_ARG
:
1851 /* Other types of symbols we just skip over. */
1856 /* We have to look up the symbol because arguments can have
1857 two entries (one a parameter, one a local) and the one we
1858 want is the local, which lookup_symbol will find for us.
1859 This includes gcc1 (not gcc2) on the sparc when passing a
1860 small structure and gcc2 when the argument type is float
1861 and it is passed as a double and converted to float by
1862 the prologue (in the latter case the type of the LOC_ARG
1863 symbol is double and the type of the LOC_LOCAL symbol is
1865 /* But if the parameter name is null, don't try it.
1866 Null parameter names occur on the RS/6000, for traceback tables.
1867 FIXME, should we even print them? */
1869 if (*SYMBOL_NAME (sym
))
1871 struct symbol
*nsym
;
1872 nsym
= lookup_symbol
1874 b
, VAR_NAMESPACE
, (int *) NULL
, (struct symtab
**) NULL
);
1875 if (SYMBOL_CLASS (nsym
) == LOC_REGISTER
)
1877 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1878 it was passed on the stack and loaded into a register,
1879 or passed in a register and stored in a stack slot.
1880 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1882 Reasons for using the LOC_ARG:
1883 (1) because find_saved_registers may be slow for remote
1885 (2) because registers are often re-used and stack slots
1886 rarely (never?) are. Therefore using the stack slot is
1887 much less likely to print garbage.
1889 Reasons why we might want to use the LOC_REGISTER:
1890 (1) So that the backtrace prints the same value as
1891 "print foo". I see no compelling reason why this needs
1892 to be the case; having the backtrace print the value which
1893 was passed in, and "print foo" print the value as modified
1894 within the called function, makes perfect sense to me.
1896 Additional note: It might be nice if "info args" displayed
1898 One more note: There is a case with sparc structure passing
1899 where we need to use the LOC_REGISTER, but this is dealt with
1900 by creating a single LOC_REGPARM in symbol reading. */
1902 /* Leave sym (the LOC_ARG) alone. */
1910 /* Print the current arg. */
1912 ui_out_text (uiout
, ", ");
1913 ui_out_wrap_hint (uiout
, " ");
1915 annotate_arg_begin ();
1917 list_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, NULL
);
1918 fprintf_symbol_filtered (stb
->stream
, SYMBOL_SOURCE_NAME (sym
),
1919 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1920 ui_out_field_stream (uiout
, "name", stb
);
1921 annotate_arg_name_end ();
1922 ui_out_text (uiout
, "=");
1924 /* Print the current arg. */
1926 fprintf_filtered (stream
, ", ");
1929 annotate_arg_begin ();
1931 fprintf_symbol_filtered (stream
, SYMBOL_SOURCE_NAME (sym
),
1932 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1933 annotate_arg_name_end ();
1934 fputs_filtered ("=", stream
);
1937 /* Avoid value_print because it will deref ref parameters. We just
1938 want to print their addresses. Print ??? for args whose address
1939 we do not know. We pass 2 as "recurse" to val_print because our
1940 standard indentation here is 4 spaces, and val_print indents
1941 2 for each recurse. */
1942 val
= read_var_value (sym
, fi
);
1944 annotate_arg_value (val
== NULL
? NULL
: VALUE_TYPE (val
));
1949 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
1950 VALUE_ADDRESS (val
),
1951 stb
->stream
, 0, 0, 2, Val_no_prettyprint
);
1952 ui_out_field_stream (uiout
, "value", stb
);
1955 ui_out_text (uiout
, "???");
1957 /* Invoke ui_out_tuple_end. */
1958 do_cleanups (list_chain
);
1960 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
1961 VALUE_ADDRESS (val
),
1962 stream
, 0, 0, 2, Val_no_prettyprint
);
1965 fputs_filtered ("???", stream
);
1968 annotate_arg_end ();
1973 /* Don't print nameless args in situations where we don't know
1974 enough about the stack to find them. */
1979 if (highest_offset
== -1)
1980 start
= FRAME_ARGS_SKIP
;
1982 start
= highest_offset
;
1984 print_frame_nameless_args (fi
, start
, num
- args_printed
,
1988 do_cleanups (old_chain
);
1989 #endif /* no UI_OUT */
1992 /* Print nameless args on STREAM.
1993 FI is the frameinfo for this frame, START is the offset
1994 of the first nameless arg, and NUM is the number of nameless args to
1995 print. FIRST is nonzero if this is the first argument (not just
1996 the first nameless arg). */
1999 print_frame_nameless_args (struct frame_info
*fi
, long start
, int num
,
2000 int first
, struct ui_file
*stream
)
2006 for (i
= 0; i
< num
; i
++)
2009 #ifdef NAMELESS_ARG_VALUE
2010 NAMELESS_ARG_VALUE (fi
, start
, &arg_value
);
2012 argsaddr
= FRAME_ARGS_ADDRESS (fi
);
2016 arg_value
= read_memory_integer (argsaddr
+ start
, sizeof (int));
2020 fprintf_filtered (stream
, ", ");
2022 #ifdef PRINT_NAMELESS_INTEGER
2023 PRINT_NAMELESS_INTEGER (stream
, arg_value
);
2025 #ifdef PRINT_TYPELESS_INTEGER
2026 PRINT_TYPELESS_INTEGER (stream
, builtin_type_int
, (LONGEST
) arg_value
);
2028 fprintf_filtered (stream
, "%ld", arg_value
);
2029 #endif /* PRINT_TYPELESS_INTEGER */
2030 #endif /* PRINT_NAMELESS_INTEGER */
2032 start
+= sizeof (int);
2038 printf_command (char *arg
, int from_tty
)
2040 register char *f
= NULL
;
2041 register char *s
= arg
;
2042 char *string
= NULL
;
2043 value_ptr
*val_args
;
2045 char *current_substring
;
2047 int allocated_args
= 20;
2048 struct cleanup
*old_cleanups
;
2050 val_args
= (value_ptr
*) xmalloc (allocated_args
* sizeof (value_ptr
));
2051 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
2054 error_no_arg ("format-control string and values to print");
2056 /* Skip white space before format string */
2057 while (*s
== ' ' || *s
== '\t')
2060 /* A format string should follow, enveloped in double quotes */
2062 error ("Bad format string, missing '\"'.");
2064 /* Parse the format-control string and copy it into the string STRING,
2065 processing some kinds of escape sequence. */
2067 f
= string
= (char *) alloca (strlen (s
) + 1);
2075 error ("Bad format string, non-terminated '\"'.");
2108 /* ??? TODO: handle other escape sequences */
2109 error ("Unrecognized escape character \\%c in format string.",
2119 /* Skip over " and following space and comma. */
2122 while (*s
== ' ' || *s
== '\t')
2125 if (*s
!= ',' && *s
!= 0)
2126 error ("Invalid argument syntax");
2130 while (*s
== ' ' || *s
== '\t')
2133 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2134 substrings
= alloca (strlen (string
) * 2);
2135 current_substring
= substrings
;
2138 /* Now scan the string for %-specs and see what kinds of args they want.
2139 argclass[I] classifies the %-specs so we can give printf_filtered
2140 something of the right size. */
2144 no_arg
, int_arg
, string_arg
, double_arg
, long_long_arg
2146 enum argclass
*argclass
;
2147 enum argclass this_argclass
;
2153 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
2161 while (strchr ("0123456789.hlL-+ #", *f
))
2163 if (*f
== 'l' || *f
== 'L')
2170 this_argclass
= string_arg
;
2176 this_argclass
= double_arg
;
2180 error ("`*' not supported for precision or width in printf");
2183 error ("Format specifier `n' not supported in printf");
2186 this_argclass
= no_arg
;
2191 this_argclass
= long_long_arg
;
2193 this_argclass
= int_arg
;
2197 if (this_argclass
!= no_arg
)
2199 strncpy (current_substring
, last_arg
, f
- last_arg
);
2200 current_substring
+= f
- last_arg
;
2201 *current_substring
++ = '\0';
2203 argclass
[nargs_wanted
++] = this_argclass
;
2207 /* Now, parse all arguments and evaluate them.
2208 Store the VALUEs in VAL_ARGS. */
2213 if (nargs
== allocated_args
)
2214 val_args
= (value_ptr
*) xrealloc ((char *) val_args
,
2215 (allocated_args
*= 2)
2216 * sizeof (value_ptr
));
2218 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2220 /* If format string wants a float, unchecked-convert the value to
2221 floating point of the same size */
2223 if (argclass
[nargs
] == double_arg
)
2225 struct type
*type
= VALUE_TYPE (val_args
[nargs
]);
2226 if (TYPE_LENGTH (type
) == sizeof (float))
2227 VALUE_TYPE (val_args
[nargs
]) = builtin_type_float
;
2228 if (TYPE_LENGTH (type
) == sizeof (double))
2229 VALUE_TYPE (val_args
[nargs
]) = builtin_type_double
;
2237 if (nargs
!= nargs_wanted
)
2238 error ("Wrong number of arguments for specified format-string");
2240 /* Now actually print them. */
2241 current_substring
= substrings
;
2242 for (i
= 0; i
< nargs
; i
++)
2244 switch (argclass
[i
])
2251 tem
= value_as_pointer (val_args
[i
]);
2253 /* This is a %s argument. Find the length of the string. */
2258 read_memory (tem
+ j
, &c
, 1);
2263 /* Copy the string contents into a string inside GDB. */
2264 str
= (char *) alloca (j
+ 1);
2266 read_memory (tem
, str
, j
);
2269 printf_filtered (current_substring
, str
);
2274 double val
= value_as_double (val_args
[i
]);
2275 printf_filtered (current_substring
, val
);
2279 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2281 long long val
= value_as_long (val_args
[i
]);
2282 printf_filtered (current_substring
, val
);
2286 error ("long long not supported in printf");
2290 /* FIXME: there should be separate int_arg and long_arg. */
2291 long val
= value_as_long (val_args
[i
]);
2292 printf_filtered (current_substring
, val
);
2295 default: /* purecov: deadcode */
2296 error ("internal error in printf_command"); /* purecov: deadcode */
2298 /* Skip to the next substring. */
2299 current_substring
+= strlen (current_substring
) + 1;
2301 /* Print the portion of the format string after the last argument. */
2302 printf_filtered (last_arg
);
2304 do_cleanups (old_cleanups
);
2307 /* Dump a specified section of assembly code. With no command line
2308 arguments, this command will dump the assembly code for the
2309 function surrounding the pc value in the selected frame. With one
2310 argument, it will dump the assembly code surrounding that pc value.
2311 Two arguments are interpeted as bounds within which to dump
2316 disassemble_command (char *arg
, int from_tty
)
2318 CORE_ADDR low
, high
;
2320 CORE_ADDR pc
, pc_masked
;
2329 if (!selected_frame
)
2330 error ("No frame selected.\n");
2332 pc
= get_frame_pc (selected_frame
);
2333 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2334 error ("No function contains program counter for selected frame.\n");
2336 else if (tui_version
)
2337 low
= tuiGetLowDisassemblyAddress (low
, pc
);
2339 low
+= FUNCTION_START_OFFSET
;
2341 else if (!(space_index
= (char *) strchr (arg
, ' ')))
2344 pc
= parse_and_eval_address (arg
);
2345 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2346 error ("No function contains specified address.\n");
2348 else if (tui_version
)
2349 low
= tuiGetLowDisassemblyAddress (low
, pc
);
2352 if (overlay_debugging
)
2354 section
= find_pc_overlay (pc
);
2355 if (pc_in_unmapped_range (pc
, section
))
2357 /* find_pc_partial_function will have returned low and high
2358 relative to the symbolic (mapped) address range. Need to
2359 translate them back to the unmapped range where PC is. */
2360 low
= overlay_unmapped_address (low
, section
);
2361 high
= overlay_unmapped_address (high
, section
);
2365 low
+= FUNCTION_START_OFFSET
;
2369 /* Two arguments. */
2370 *space_index
= '\0';
2371 low
= parse_and_eval_address (arg
);
2372 high
= parse_and_eval_address (space_index
+ 1);
2376 if (!tui_is_window_visible (DISASSEM_WIN
))
2379 printf_filtered ("Dump of assembler code ");
2382 printf_filtered ("for function %s:\n", name
);
2386 printf_filtered ("from ");
2387 print_address_numeric (low
, 1, gdb_stdout
);
2388 printf_filtered (" to ");
2389 print_address_numeric (high
, 1, gdb_stdout
);
2390 printf_filtered (":\n");
2393 /* Dump the specified range. */
2396 #ifdef GDB_TARGET_MASK_DISAS_PC
2397 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2402 while (pc_masked
< high
)
2405 print_address (pc_masked
, gdb_stdout
);
2406 printf_filtered (":\t");
2407 /* We often wrap here if there are long symbolic names. */
2409 pc
+= print_insn (pc
, gdb_stdout
);
2410 printf_filtered ("\n");
2412 #ifdef GDB_TARGET_MASK_DISAS_PC
2413 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2418 printf_filtered ("End of assembler dump.\n");
2419 gdb_flush (gdb_stdout
);
2424 tui_show_assembly (low
);
2429 /* Print the instruction at address MEMADDR in debugged memory,
2430 on STREAM. Returns length of the instruction, in bytes. */
2433 print_insn (CORE_ADDR memaddr
, struct ui_file
*stream
)
2435 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2436 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_BIG
;
2438 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_LITTLE
;
2440 if (TARGET_ARCHITECTURE
!= NULL
)
2441 TARGET_PRINT_INSN_INFO
->mach
= TARGET_ARCHITECTURE
->mach
;
2442 /* else: should set .mach=0 but some disassemblers don't grok this */
2444 TARGET_PRINT_INSN_INFO
->stream
= stream
;
2446 return TARGET_PRINT_INSN (memaddr
, TARGET_PRINT_INSN_INFO
);
2451 _initialize_printcmd (void)
2453 struct cmd_list_element
*c
;
2455 current_display_number
= -1;
2457 add_info ("address", address_info
,
2458 "Describe where symbol SYM is stored.");
2460 add_info ("symbol", sym_info
,
2461 "Describe what symbol is at location ADDR.\n\
2462 Only for symbols with fixed locations (global or static scope).");
2464 add_com ("x", class_vars
, x_command
,
2465 concat ("Examine memory: x/FMT ADDRESS.\n\
2466 ADDRESS is an expression for the memory address to examine.\n\
2467 FMT is a repeat count followed by a format letter and a size letter.\n\
2468 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2469 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
2470 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2471 The specified number of objects of the specified size are printed\n\
2472 according to the format.\n\n\
2473 Defaults for format and size letters are those previously used.\n\
2474 Default count is 1. Default address is following last thing printed\n\
2475 with this command or \"print\".", NULL
));
2477 c
= add_com ("disassemble", class_vars
, disassemble_command
,
2478 "Disassemble a specified section of memory.\n\
2479 Default is the function surrounding the pc of the selected frame.\n\
2480 With a single argument, the function surrounding that address is dumped.\n\
2481 Two arguments are taken as a range of memory to dump.");
2482 c
->completer
= location_completer
;
2484 add_com_alias ("va", "disassemble", class_xdb
, 0);
2487 add_com ("whereis", class_vars
, whereis_command
,
2488 "Print line number and file of definition of variable.");
2491 add_info ("display", display_info
,
2492 "Expressions to display when program stops, with code numbers.");
2494 add_cmd ("undisplay", class_vars
, undisplay_command
,
2495 "Cancel some expressions to be displayed when program stops.\n\
2496 Arguments are the code numbers of the expressions to stop displaying.\n\
2497 No argument means cancel all automatic-display expressions.\n\
2498 \"delete display\" has the same effect as this command.\n\
2499 Do \"info display\" to see current list of code numbers.",
2502 add_com ("display", class_vars
, display_command
,
2503 "Print value of expression EXP each time the program stops.\n\
2504 /FMT may be used before EXP as in the \"print\" command.\n\
2505 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2506 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2507 and examining is done as in the \"x\" command.\n\n\
2508 With no argument, display all currently requested auto-display expressions.\n\
2509 Use \"undisplay\" to cancel display requests previously made."
2512 add_cmd ("display", class_vars
, enable_display
,
2513 "Enable some expressions to be displayed when program stops.\n\
2514 Arguments are the code numbers of the expressions to resume displaying.\n\
2515 No argument means enable all automatic-display expressions.\n\
2516 Do \"info display\" to see current list of code numbers.", &enablelist
);
2518 add_cmd ("display", class_vars
, disable_display_command
,
2519 "Disable some expressions to be displayed when program stops.\n\
2520 Arguments are the code numbers of the expressions to stop displaying.\n\
2521 No argument means disable all automatic-display expressions.\n\
2522 Do \"info display\" to see current list of code numbers.", &disablelist
);
2524 add_cmd ("display", class_vars
, undisplay_command
,
2525 "Cancel some expressions to be displayed when program stops.\n\
2526 Arguments are the code numbers of the expressions to stop displaying.\n\
2527 No argument means cancel all automatic-display expressions.\n\
2528 Do \"info display\" to see current list of code numbers.", &deletelist
);
2530 add_com ("printf", class_vars
, printf_command
,
2531 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2532 This is useful for formatted output in user-defined commands.");
2534 add_com ("output", class_vars
, output_command
,
2535 "Like \"print\" but don't put in value history and don't print newline.\n\
2536 This is useful in user-defined commands.");
2538 add_prefix_cmd ("set", class_vars
, set_command
,
2539 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2540 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2541 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2542 with $), a register (a few standard names starting with $), or an actual\n\
2543 variable in the program being debugged. EXP is any valid expression.\n",
2544 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2545 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2546 You can see these environment settings with the \"show\" command.", NULL
),
2547 &setlist
, "set ", 1, &cmdlist
);
2549 add_com ("assign", class_vars
, set_command
, concat ("Evaluate expression \
2550 EXP and assign result to variable VAR, using assignment\n\
2551 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2552 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2553 with $), a register (a few standard names starting with $), or an actual\n\
2554 variable in the program being debugged. EXP is any valid expression.\n",
2555 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2556 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2557 You can see these environment settings with the \"show\" command.", NULL
));
2559 /* "call" is the same as "set", but handy for dbx users to call fns. */
2560 c
= add_com ("call", class_vars
, call_command
,
2561 "Call a function in the program.\n\
2562 The argument is the function name and arguments, in the notation of the\n\
2563 current working language. The result is printed and saved in the value\n\
2564 history, if it is not void.");
2565 c
->completer
= location_completer
;
2567 add_cmd ("variable", class_vars
, set_command
,
2568 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2569 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2570 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2571 with $), a register (a few standard names starting with $), or an actual\n\
2572 variable in the program being debugged. EXP is any valid expression.\n\
2573 This may usually be abbreviated to simply \"set\".",
2576 c
= add_com ("print", class_vars
, print_command
,
2577 concat ("Print value of expression EXP.\n\
2578 Variables accessible are those of the lexical environment of the selected\n\
2579 stack frame, plus all those whose scope is global or an entire file.\n\
2581 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2582 $$NUM refers to NUM'th value back from the last one.\n\
2583 Names starting with $ refer to registers (with the values they would have\n",
2584 "if the program were to return to the stack frame now selected, restoring\n\
2585 all registers saved by frames farther in) or else to debugger\n\
2586 \"convenience\" variables (any such name not a known register).\n\
2587 Use assignment expressions to give values to convenience variables.\n",
2589 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2590 @ is a binary operator for treating consecutive data objects\n\
2591 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2592 element is FOO, whose second element is stored in the space following\n\
2593 where FOO is stored, etc. FOO must be an expression whose value\n\
2594 resides in memory.\n",
2596 EXP may be preceded with /FMT, where FMT is a format letter\n\
2597 but no count or size letter (see \"x\" command).", NULL
));
2598 c
->completer
= location_completer
;
2599 add_com_alias ("p", "print", class_vars
, 1);
2601 c
= add_com ("inspect", class_vars
, inspect_command
,
2602 "Same as \"print\" command, except that if you are running in the epoch\n\
2603 environment, the value is printed in its own window.");
2604 c
->completer
= location_completer
;
2607 add_set_cmd ("max-symbolic-offset", no_class
, var_uinteger
,
2608 (char *) &max_symbolic_offset
,
2609 "Set the largest offset that will be printed in <symbol+1234> form.",
2613 add_set_cmd ("symbol-filename", no_class
, var_boolean
,
2614 (char *) &print_symbol_filename
,
2615 "Set printing of source filename and line number with <symbol>.",
2619 /* For examine/instruction a single byte quantity is specified as
2620 the data. This avoids problems with value_at_lazy() requiring a
2621 valid data type (and rejecting VOID). */
2622 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2624 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2625 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2626 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2627 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);