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 */
44 extern int asm_demangle
; /* Whether to demangle syms in asm printouts */
45 extern int addressprint
; /* Whether to print hex addresses in HLL " */
54 /* Last specified output format. */
56 static char last_format
= 'x';
58 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
60 static char last_size
= 'w';
62 /* Default address to examine next. */
64 static CORE_ADDR next_address
;
66 /* Default section to examine next. */
68 static asection
*next_section
;
70 /* Last address examined. */
72 static CORE_ADDR last_examine_address
;
74 /* Contents of last address examined.
75 This is not valid past the end of the `x' command! */
77 static value_ptr last_examine_value
;
79 /* Largest offset between a symbolic value and an address, that will be
80 printed as `0x1234 <symbol+offset>'. */
82 static unsigned int max_symbolic_offset
= UINT_MAX
;
84 /* Append the source filename and linenumber of the symbol when
85 printing a symbolic value as `<symbol at filename:linenum>' if set. */
86 static int print_symbol_filename
= 0;
88 /* Number of auto-display expression currently being displayed.
89 So that we can disable it if we get an error or a signal within it.
90 -1 when not doing one. */
92 int current_display_number
;
94 /* Flag to low-level print routines that this value is being printed
95 in an epoch window. We'd like to pass this as a parameter, but
96 every routine would need to take it. Perhaps we can encapsulate
97 this in the I/O stream once we have GNU stdio. */
103 /* Chain link to next auto-display item. */
104 struct display
*next
;
105 /* Expression to be evaluated and displayed. */
106 struct expression
*exp
;
107 /* Item number of this auto-display item. */
109 /* Display format specified. */
110 struct format_data format
;
111 /* Innermost block required by this expression when evaluated */
113 /* Status of this display (enabled or disabled) */
117 /* Chain of expressions whose values should be displayed
118 automatically each time the program stops. */
120 static struct display
*display_chain
;
122 static int display_number
;
124 /* Prototypes for exported functions. */
126 void output_command (char *, int);
128 void _initialize_printcmd (void);
130 /* Prototypes for local functions. */
132 static void delete_display (int);
134 static void enable_display (char *, int);
136 static void disable_display_command (char *, int);
138 static void disassemble_command (char *, int);
140 static void printf_command (char *, int);
142 static void print_frame_nameless_args (struct frame_info
*, long,
143 int, int, struct ui_file
*);
145 static void display_info (char *, int);
147 static void do_one_display (struct display
*);
149 static void undisplay_command (char *, int);
151 static void free_display (struct display
*);
153 static void display_command (char *, int);
155 void x_command (char *, int);
157 static void address_info (char *, int);
159 static void set_command (char *, int);
161 static void call_command (char *, int);
163 static void inspect_command (char *, int);
165 static void print_command (char *, int);
167 static void print_command_1 (char *, int, int);
169 static void validate_format (struct format_data
, char *);
171 static void do_examine (struct format_data
, CORE_ADDR addr
,
174 static void print_formatted (value_ptr
, int, int, struct ui_file
*);
176 static struct format_data
decode_format (char **, int, int);
178 static int print_insn (CORE_ADDR
, struct ui_file
*);
180 static void sym_info (char *, int);
183 /* Decode a format specification. *STRING_PTR should point to it.
184 OFORMAT and OSIZE are used as defaults for the format and size
185 if none are given in the format specification.
186 If OSIZE is zero, then the size field of the returned value
187 should be set only if a size is explicitly specified by the
189 The structure returned describes all the data
190 found in the specification. In addition, *STRING_PTR is advanced
191 past the specification and past all whitespace following it. */
193 static struct format_data
194 decode_format (char **string_ptr
, int oformat
, int osize
)
196 struct format_data val
;
197 register char *p
= *string_ptr
;
203 if (*p
>= '0' && *p
<= '9')
204 val
.count
= atoi (p
);
205 while (*p
>= '0' && *p
<= '9')
208 /* Now process size or format letters that follow. */
212 if (*p
== 'b' || *p
== 'h' || *p
== 'w' || *p
== 'g')
214 else if (*p
>= 'a' && *p
<= 'z')
220 while (*p
== ' ' || *p
== '\t')
224 /* Set defaults for format and size if not specified. */
225 if (val
.format
== '?')
229 /* Neither has been specified. */
230 val
.format
= oformat
;
234 /* If a size is specified, any format makes a reasonable
235 default except 'i'. */
236 val
.format
= oformat
== 'i' ? 'x' : oformat
;
238 else if (val
.size
== '?')
243 /* Pick the appropriate size for an address. */
244 if (TARGET_PTR_BIT
== 64)
245 val
.size
= osize
? 'g' : osize
;
246 else if (TARGET_PTR_BIT
== 32)
247 val
.size
= osize
? 'w' : osize
;
248 else if (TARGET_PTR_BIT
== 16)
249 val
.size
= osize
? 'h' : osize
;
251 /* Bad value for TARGET_PTR_BIT */
252 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
255 /* Floating point has to be word or giantword. */
256 if (osize
== 'w' || osize
== 'g')
259 /* Default it to giantword if the last used size is not
261 val
.size
= osize
? 'g' : osize
;
264 /* Characters default to one byte. */
265 val
.size
= osize
? 'b' : osize
;
268 /* The default is the size most recently specified. */
275 /* Print value VAL on stream according to FORMAT, a letter or 0.
276 Do not end with a newline.
277 0 means print VAL according to its own type.
278 SIZE is the letter for the size of datum being printed.
279 This is used to pad hex numbers so they line up. */
282 print_formatted (register value_ptr val
, register int format
, int size
,
283 struct ui_file
*stream
)
285 struct type
*type
= check_typedef (VALUE_TYPE (val
));
286 int len
= TYPE_LENGTH (type
);
288 if (VALUE_LVAL (val
) == lval_memory
)
290 next_address
= VALUE_ADDRESS (val
) + len
;
291 next_section
= VALUE_BFD_SECTION (val
);
297 /* FIXME: Need to handle wchar_t's here... */
298 next_address
= VALUE_ADDRESS (val
)
299 + val_print_string (VALUE_ADDRESS (val
), -1, 1, stream
);
300 next_section
= VALUE_BFD_SECTION (val
);
304 /* The old comment says
305 "Force output out, print_insn not using _filtered".
306 I'm not completely sure what that means, I suspect most print_insn
307 now do use _filtered, so I guess it's obsolete.
308 --Yes, it does filter now, and so this is obsolete. -JB */
310 /* We often wrap here if there are long symbolic names. */
312 next_address
= VALUE_ADDRESS (val
)
313 + print_insn (VALUE_ADDRESS (val
), stream
);
314 next_section
= VALUE_BFD_SECTION (val
);
319 || TYPE_CODE (type
) == TYPE_CODE_ARRAY
320 || TYPE_CODE (type
) == TYPE_CODE_STRING
321 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
322 || TYPE_CODE (type
) == TYPE_CODE_UNION
)
323 /* If format is 0, use the 'natural' format for
324 * that type of value. If the type is non-scalar,
325 * we have to use language rules to print it as
326 * a series of scalars.
328 value_print (val
, stream
, format
, Val_pretty_default
);
330 /* User specified format, so don't look to the
331 * the type to tell us what to do.
333 print_scalar_formatted (VALUE_CONTENTS (val
), type
,
334 format
, size
, stream
);
338 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
339 according to letters FORMAT and SIZE on STREAM.
340 FORMAT may not be zero. Formats s and i are not supported at this level.
342 This is how the elements of an array or structure are printed
346 print_scalar_formatted (char *valaddr
, struct type
*type
, int format
, int size
,
347 struct ui_file
*stream
)
350 unsigned int len
= TYPE_LENGTH (type
);
352 if (len
> sizeof (LONGEST
)
360 if (!TYPE_UNSIGNED (type
)
361 || !extract_long_unsigned_integer (valaddr
, len
, &val_long
))
363 /* We can't print it normally, but we can print it in hex.
364 Printing it in the wrong radix is more useful than saying
365 "use /x, you dummy". */
366 /* FIXME: we could also do octal or binary if that was the
368 /* FIXME: we should be using the size field to give us a
369 minimum field width to print. */
372 print_octal_chars (stream
, valaddr
, len
);
373 else if (format
== 'd')
374 print_decimal_chars (stream
, valaddr
, len
);
375 else if (format
== 't')
376 print_binary_chars (stream
, valaddr
, len
);
378 /* replace with call to print_hex_chars? Looks
379 like val_print_type_code_int is redoing
382 val_print_type_code_int (type
, valaddr
, stream
);
387 /* If we get here, extract_long_unsigned_integer set val_long. */
389 else if (format
!= 'f')
390 val_long
= unpack_long (type
, valaddr
);
392 /* If we are printing it as unsigned, truncate it in case it is actually
393 a negative signed value (e.g. "print/u (short)-1" should print 65535
394 (if shorts are 16 bits) instead of 4294967295). */
397 if (len
< sizeof (LONGEST
))
398 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
406 /* no size specified, like in print. Print varying # of digits. */
407 print_longest (stream
, 'x', 1, val_long
);
416 print_longest (stream
, size
, 1, val_long
);
419 error ("Undefined output size \"%c\".", size
);
424 print_longest (stream
, 'd', 1, val_long
);
428 print_longest (stream
, 'u', 0, val_long
);
433 print_longest (stream
, 'o', 1, val_long
);
435 fprintf_filtered (stream
, "0");
440 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
441 print_address (addr
, stream
);
446 value_print (value_from_longest (builtin_type_true_char
, val_long
),
447 stream
, 0, Val_pretty_default
);
451 if (len
== sizeof (float))
452 type
= builtin_type_float
;
453 else if (len
== sizeof (double))
454 type
= builtin_type_double
;
455 print_floating (valaddr
, type
, stream
);
459 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
462 /* Binary; 't' stands for "two". */
464 char bits
[8 * (sizeof val_long
) + 1];
465 char buf
[8 * (sizeof val_long
) + 32];
470 width
= 8 * (sizeof val_long
);
487 error ("Undefined output size \"%c\".", size
);
493 bits
[width
] = (val_long
& 1) ? '1' : '0';
498 while (*cp
&& *cp
== '0')
503 strcpy (buf
, local_binary_format_prefix ());
505 strcat (buf
, local_binary_format_suffix ());
506 fprintf_filtered (stream
, buf
);
511 error ("Undefined output format \"%c\".", format
);
515 /* Specify default address for `x' command.
516 `info lines' uses this. */
519 set_next_address (CORE_ADDR addr
)
523 /* Make address available to the user as $_. */
524 set_internalvar (lookup_internalvar ("_"),
525 value_from_pointer (lookup_pointer_type (builtin_type_void
),
529 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
530 after LEADIN. Print nothing if no symbolic name is found nearby.
531 Optionally also print source file and line number, if available.
532 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
533 or to interpret it as a possible C++ name and convert it back to source
534 form. However note that DO_DEMANGLE can be overridden by the specific
535 settings of the demangle and asm_demangle variables. */
538 print_address_symbolic (CORE_ADDR addr
, struct ui_file
*stream
, int do_demangle
,
542 char *filename
= NULL
;
547 /* throw away both name and filename */
548 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
549 make_cleanup (free_current_contents
, &filename
);
551 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
, &filename
, &line
, &unmapped
))
553 do_cleanups (cleanup_chain
);
557 fputs_filtered (leadin
, stream
);
559 fputs_filtered ("<*", stream
);
561 fputs_filtered ("<", stream
);
562 fputs_filtered (name
, stream
);
564 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
566 /* Append source filename and line number if desired. Give specific
567 line # of this addr, if we have it; else line # of the nearest symbol. */
568 if (print_symbol_filename
&& filename
!= NULL
)
571 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
573 fprintf_filtered (stream
, " in %s", filename
);
576 fputs_filtered ("*>", stream
);
578 fputs_filtered (">", stream
);
580 do_cleanups (cleanup_chain
);
583 /* Given an address ADDR return all the elements needed to print the
584 address in a symbolic form. NAME can be mangled or not depending
585 on DO_DEMANGLE (and also on the asm_demangle global variable,
586 manipulated via ''set print asm-demangle''). Return 0 in case of
587 success, when all the info in the OUT paramters is valid. Return 1
590 build_address_symbolic (CORE_ADDR addr
, /* IN */
591 int do_demangle
, /* IN */
592 char **name
, /* OUT */
593 int *offset
, /* OUT */
594 char **filename
, /* OUT */
596 int *unmapped
) /* OUT */
598 struct minimal_symbol
*msymbol
;
599 struct symbol
*symbol
;
600 struct symtab
*symtab
= 0;
601 CORE_ADDR name_location
= 0;
602 asection
*section
= 0;
603 char *name_temp
= "";
605 /* Let's say it is unmapped. */
608 /* Determine if the address is in an overlay, and whether it is
610 if (overlay_debugging
)
612 section
= find_pc_overlay (addr
);
613 if (pc_in_unmapped_range (addr
, section
))
616 addr
= overlay_mapped_address (addr
, section
);
620 /* On some targets, add in extra "flag" bits to PC for
621 disassembly. This should ensure that "rounding errors" in
622 symbol addresses that are masked for disassembly favour the
623 the correct symbol. */
625 #ifdef GDB_TARGET_UNMASK_DISAS_PC
626 addr
= GDB_TARGET_UNMASK_DISAS_PC (addr
);
629 /* First try to find the address in the symbol table, then
630 in the minsyms. Take the closest one. */
632 /* This is defective in the sense that it only finds text symbols. So
633 really this is kind of pointless--we should make sure that the
634 minimal symbols have everything we need (by changing that we could
635 save some memory, but for many debug format--ELF/DWARF or
636 anything/stabs--it would be inconvenient to eliminate those minimal
638 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
639 symbol
= find_pc_sect_function (addr
, section
);
643 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
645 name_temp
= SYMBOL_SOURCE_NAME (symbol
);
647 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
652 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
654 /* The msymbol is closer to the address than the symbol;
655 use the msymbol instead. */
658 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
660 name_temp
= SYMBOL_SOURCE_NAME (msymbol
);
662 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
665 if (symbol
== NULL
&& msymbol
== NULL
)
668 /* On some targets, mask out extra "flag" bits from PC for handsome
671 #ifdef GDB_TARGET_MASK_DISAS_PC
672 name_location
= GDB_TARGET_MASK_DISAS_PC (name_location
);
673 addr
= GDB_TARGET_MASK_DISAS_PC (addr
);
676 /* If the nearest symbol is too far away, don't print anything symbolic. */
678 /* For when CORE_ADDR is larger than unsigned int, we do math in
679 CORE_ADDR. But when we detect unsigned wraparound in the
680 CORE_ADDR math, we ignore this test and print the offset,
681 because addr+max_symbolic_offset has wrapped through the end
682 of the address space back to the beginning, giving bogus comparison. */
683 if (addr
> name_location
+ max_symbolic_offset
684 && name_location
+ max_symbolic_offset
> name_location
)
687 *offset
= addr
- name_location
;
689 *name
= xstrdup (name_temp
);
691 if (print_symbol_filename
)
693 struct symtab_and_line sal
;
695 sal
= find_pc_sect_line (addr
, section
, 0);
699 *filename
= xstrdup (sal
.symtab
->filename
);
702 else if (symtab
&& symbol
&& symbol
->line
)
704 *filename
= xstrdup (symtab
->filename
);
705 *line
= symbol
->line
;
709 *filename
= xstrdup (symtab
->filename
);
716 /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
719 print_address_numeric (CORE_ADDR addr
, int use_local
, struct ui_file
*stream
)
721 /* Truncate address to the size of a target address, avoiding shifts
722 larger or equal than the width of a CORE_ADDR. The local
723 variable ADDR_BIT stops the compiler reporting a shift overflow
724 when it won't occur. */
725 /* NOTE: This assumes that the significant address information is
726 kept in the least significant bits of ADDR - the upper bits were
727 either zero or sign extended. Should ADDRESS_TO_POINTER() or
728 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
730 int addr_bit
= TARGET_ADDR_BIT
;
732 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
733 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
734 print_longest (stream
, 'x', use_local
, (ULONGEST
) addr
);
737 /* Print address ADDR symbolically on STREAM.
738 First print it as a number. Then perhaps print
739 <SYMBOL + OFFSET> after the number. */
742 print_address (CORE_ADDR addr
, struct ui_file
*stream
)
744 print_address_numeric (addr
, 1, stream
);
745 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
748 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
749 controls whether to print the symbolic name "raw" or demangled.
750 Global setting "addressprint" controls whether to print hex address
754 print_address_demangle (CORE_ADDR addr
, struct ui_file
*stream
, int do_demangle
)
758 fprintf_filtered (stream
, "0");
760 else if (addressprint
)
762 print_address_numeric (addr
, 1, stream
);
763 print_address_symbolic (addr
, stream
, do_demangle
, " ");
767 print_address_symbolic (addr
, stream
, do_demangle
, "");
772 /* These are the types that $__ will get after an examine command of one
775 static struct type
*examine_i_type
;
777 static struct type
*examine_b_type
;
778 static struct type
*examine_h_type
;
779 static struct type
*examine_w_type
;
780 static struct type
*examine_g_type
;
782 /* Examine data at address ADDR in format FMT.
783 Fetch it from memory and print on gdb_stdout. */
786 do_examine (struct format_data fmt
, CORE_ADDR addr
, asection
*sect
)
788 register char format
= 0;
790 register int count
= 1;
791 struct type
*val_type
= NULL
;
793 register int maxelts
;
801 /* String or instruction format implies fetch single bytes
802 regardless of the specified size. */
803 if (format
== 's' || format
== 'i')
807 val_type
= examine_i_type
;
808 else if (size
== 'b')
809 val_type
= examine_b_type
;
810 else if (size
== 'h')
811 val_type
= examine_h_type
;
812 else if (size
== 'w')
813 val_type
= examine_w_type
;
814 else if (size
== 'g')
815 val_type
= examine_g_type
;
822 if (format
== 's' || format
== 'i')
825 /* Print as many objects as specified in COUNT, at most maxelts per line,
826 with the address of the next one at the start of each line. */
831 print_address (next_address
, gdb_stdout
);
832 printf_filtered (":");
837 printf_filtered ("\t");
838 /* Note that print_formatted sets next_address for the next
840 last_examine_address
= next_address
;
842 if (last_examine_value
)
843 value_free (last_examine_value
);
845 /* The value to be displayed is not fetched greedily.
846 Instead, to avoid the posibility of a fetched value not
847 being used, its retreval is delayed until the print code
848 uses it. When examining an instruction stream, the
849 disassembler will perform its own memory fetch using just
850 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
851 the disassembler be modified so that LAST_EXAMINE_VALUE
852 is left with the byte sequence from the last complete
853 instruction fetched from memory? */
854 last_examine_value
= value_at_lazy (val_type
, next_address
, sect
);
856 if (last_examine_value
)
857 release_value (last_examine_value
);
859 print_formatted (last_examine_value
, format
, size
, gdb_stdout
);
861 printf_filtered ("\n");
862 gdb_flush (gdb_stdout
);
867 validate_format (struct format_data fmt
, char *cmdname
)
870 error ("Size letters are meaningless in \"%s\" command.", cmdname
);
872 error ("Item count other than 1 is meaningless in \"%s\" command.",
874 if (fmt
.format
== 'i' || fmt
.format
== 's')
875 error ("Format letter \"%c\" is meaningless in \"%s\" command.",
876 fmt
.format
, cmdname
);
879 /* Evaluate string EXP as an expression in the current language and
880 print the resulting value. EXP may contain a format specifier as the
881 first argument ("/x myvar" for example, to print myvar in hex).
885 print_command_1 (char *exp
, int inspect
, int voidprint
)
887 struct expression
*expr
;
888 register struct cleanup
*old_chain
= 0;
889 register char format
= 0;
890 register value_ptr val
;
891 struct format_data fmt
;
894 /* Pass inspect flag to the rest of the print routines in a global (sigh). */
895 inspect_it
= inspect
;
897 if (exp
&& *exp
== '/')
900 fmt
= decode_format (&exp
, last_format
, 0);
901 validate_format (fmt
, "print");
902 last_format
= format
= fmt
.format
;
914 expr
= parse_expression (exp
);
915 old_chain
= make_cleanup (free_current_contents
, &expr
);
917 val
= evaluate_expression (expr
);
919 /* C++: figure out what type we actually want to print it as. */
920 type
= VALUE_TYPE (val
);
923 && (TYPE_CODE (type
) == TYPE_CODE_PTR
924 || TYPE_CODE (type
) == TYPE_CODE_REF
)
925 && (TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_STRUCT
926 || TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_UNION
))
930 v
= value_from_vtable_info (val
, TYPE_TARGET_TYPE (type
));
934 type
= VALUE_TYPE (val
);
939 val
= access_value_history (0);
941 if (voidprint
|| (val
&& VALUE_TYPE (val
) &&
942 TYPE_CODE (VALUE_TYPE (val
)) != TYPE_CODE_VOID
))
944 int histindex
= record_latest_value (val
);
947 annotate_value_history_begin (histindex
, VALUE_TYPE (val
));
949 annotate_value_begin (VALUE_TYPE (val
));
952 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp
, histindex
);
953 else if (histindex
>= 0)
954 printf_filtered ("$%d = ", histindex
);
957 annotate_value_history_value ();
959 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
960 printf_filtered ("\n");
963 annotate_value_history_end ();
965 annotate_value_end ();
968 printf_unfiltered ("\") )\030");
972 do_cleanups (old_chain
);
973 inspect_it
= 0; /* Reset print routines to normal */
978 print_command (char *exp
, int from_tty
)
980 print_command_1 (exp
, 0, 1);
983 /* Same as print, except in epoch, it gets its own window */
986 inspect_command (char *exp
, int from_tty
)
988 extern int epoch_interface
;
990 print_command_1 (exp
, epoch_interface
, 1);
993 /* Same as print, except it doesn't print void results. */
996 call_command (char *exp
, int from_tty
)
998 print_command_1 (exp
, 0, 0);
1003 output_command (char *exp
, int from_tty
)
1005 struct expression
*expr
;
1006 register struct cleanup
*old_chain
;
1007 register char format
= 0;
1008 register value_ptr val
;
1009 struct format_data fmt
;
1011 if (exp
&& *exp
== '/')
1014 fmt
= decode_format (&exp
, 0, 0);
1015 validate_format (fmt
, "output");
1016 format
= fmt
.format
;
1019 expr
= parse_expression (exp
);
1020 old_chain
= make_cleanup (free_current_contents
, &expr
);
1022 val
= evaluate_expression (expr
);
1024 annotate_value_begin (VALUE_TYPE (val
));
1026 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
1028 annotate_value_end ();
1031 gdb_flush (gdb_stdout
);
1033 do_cleanups (old_chain
);
1038 set_command (char *exp
, int from_tty
)
1040 struct expression
*expr
= parse_expression (exp
);
1041 register struct cleanup
*old_chain
=
1042 make_cleanup (free_current_contents
, &expr
);
1043 evaluate_expression (expr
);
1044 do_cleanups (old_chain
);
1049 sym_info (char *arg
, int from_tty
)
1051 struct minimal_symbol
*msymbol
;
1052 struct objfile
*objfile
;
1053 struct obj_section
*osect
;
1055 CORE_ADDR addr
, sect_addr
;
1057 unsigned int offset
;
1060 error_no_arg ("address");
1062 addr
= parse_and_eval_address (arg
);
1063 ALL_OBJSECTIONS (objfile
, osect
)
1065 sect
= osect
->the_bfd_section
;
1066 sect_addr
= overlay_mapped_address (addr
, sect
);
1068 if (osect
->addr
<= sect_addr
&& sect_addr
< osect
->endaddr
&&
1069 (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, sect
)))
1072 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1074 printf_filtered ("%s + %u in ",
1075 SYMBOL_SOURCE_NAME (msymbol
), offset
);
1077 printf_filtered ("%s in ",
1078 SYMBOL_SOURCE_NAME (msymbol
));
1079 if (pc_in_unmapped_range (addr
, sect
))
1080 printf_filtered ("load address range of ");
1081 if (section_is_overlay (sect
))
1082 printf_filtered ("%s overlay ",
1083 section_is_mapped (sect
) ? "mapped" : "unmapped");
1084 printf_filtered ("section %s", sect
->name
);
1085 printf_filtered ("\n");
1089 printf_filtered ("No symbol matches %s.\n", arg
);
1094 address_info (char *exp
, int from_tty
)
1096 register struct symbol
*sym
;
1097 register struct minimal_symbol
*msymbol
;
1099 register long basereg
;
1101 CORE_ADDR load_addr
;
1102 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1103 if exp is a field of `this'. */
1106 error ("Argument required.");
1108 sym
= lookup_symbol (exp
, get_selected_block (), VAR_NAMESPACE
,
1109 &is_a_field_of_this
, (struct symtab
**) NULL
);
1112 if (is_a_field_of_this
)
1114 printf_filtered ("Symbol \"");
1115 fprintf_symbol_filtered (gdb_stdout
, exp
,
1116 current_language
->la_language
, DMGL_ANSI
);
1117 printf_filtered ("\" is a field of the local class variable `this'\n");
1121 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1123 if (msymbol
!= NULL
)
1125 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1127 printf_filtered ("Symbol \"");
1128 fprintf_symbol_filtered (gdb_stdout
, exp
,
1129 current_language
->la_language
, DMGL_ANSI
);
1130 printf_filtered ("\" is at ");
1131 print_address_numeric (load_addr
, 1, gdb_stdout
);
1132 printf_filtered (" in a file compiled without debugging");
1133 section
= SYMBOL_BFD_SECTION (msymbol
);
1134 if (section_is_overlay (section
))
1136 load_addr
= overlay_unmapped_address (load_addr
, section
);
1137 printf_filtered (",\n -- loaded at ");
1138 print_address_numeric (load_addr
, 1, gdb_stdout
);
1139 printf_filtered (" in overlay section %s", section
->name
);
1141 printf_filtered (".\n");
1144 error ("No symbol \"%s\" in current context.", exp
);
1148 printf_filtered ("Symbol \"");
1149 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_NAME (sym
),
1150 current_language
->la_language
, DMGL_ANSI
);
1151 printf_filtered ("\" is ");
1152 val
= SYMBOL_VALUE (sym
);
1153 basereg
= SYMBOL_BASEREG (sym
);
1154 section
= SYMBOL_BFD_SECTION (sym
);
1156 switch (SYMBOL_CLASS (sym
))
1159 case LOC_CONST_BYTES
:
1160 printf_filtered ("constant");
1164 printf_filtered ("a label at address ");
1165 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1167 if (section_is_overlay (section
))
1169 load_addr
= overlay_unmapped_address (load_addr
, section
);
1170 printf_filtered (",\n -- loaded at ");
1171 print_address_numeric (load_addr
, 1, gdb_stdout
);
1172 printf_filtered (" in overlay section %s", section
->name
);
1177 printf_filtered ("a variable in register %s", REGISTER_NAME (val
));
1181 printf_filtered ("static storage at address ");
1182 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1184 if (section_is_overlay (section
))
1186 load_addr
= overlay_unmapped_address (load_addr
, section
);
1187 printf_filtered (",\n -- loaded at ");
1188 print_address_numeric (load_addr
, 1, gdb_stdout
);
1189 printf_filtered (" in overlay section %s", section
->name
);
1194 printf_filtered ("external global (indirect addressing), at address *(");
1195 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1197 printf_filtered (")");
1198 if (section_is_overlay (section
))
1200 load_addr
= overlay_unmapped_address (load_addr
, section
);
1201 printf_filtered (",\n -- loaded at ");
1202 print_address_numeric (load_addr
, 1, gdb_stdout
);
1203 printf_filtered (" in overlay section %s", section
->name
);
1208 printf_filtered ("an argument in register %s", REGISTER_NAME (val
));
1211 case LOC_REGPARM_ADDR
:
1212 printf_filtered ("address of an argument in register %s", REGISTER_NAME (val
));
1216 printf_filtered ("an argument at offset %ld", val
);
1220 printf_filtered ("an argument at frame offset %ld", val
);
1224 printf_filtered ("a local variable at frame offset %ld", val
);
1228 printf_filtered ("a reference argument at offset %ld", val
);
1232 printf_filtered ("a variable at offset %ld from register %s",
1233 val
, REGISTER_NAME (basereg
));
1236 case LOC_BASEREG_ARG
:
1237 printf_filtered ("an argument at offset %ld from register %s",
1238 val
, REGISTER_NAME (basereg
));
1242 printf_filtered ("a typedef");
1246 printf_filtered ("a function at address ");
1247 #ifdef GDB_TARGET_MASK_DISAS_PC
1248 print_address_numeric
1249 (load_addr
= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))),
1252 print_address_numeric (load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
1255 if (section_is_overlay (section
))
1257 load_addr
= overlay_unmapped_address (load_addr
, section
);
1258 printf_filtered (",\n -- loaded at ");
1259 print_address_numeric (load_addr
, 1, gdb_stdout
);
1260 printf_filtered (" in overlay section %s", section
->name
);
1264 case LOC_UNRESOLVED
:
1266 struct minimal_symbol
*msym
;
1268 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, NULL
);
1270 printf_filtered ("unresolved");
1273 section
= SYMBOL_BFD_SECTION (msym
);
1274 printf_filtered ("static storage at address ");
1275 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (msym
),
1277 if (section_is_overlay (section
))
1279 load_addr
= overlay_unmapped_address (load_addr
, section
);
1280 printf_filtered (",\n -- loaded at ");
1281 print_address_numeric (load_addr
, 1, gdb_stdout
);
1282 printf_filtered (" in overlay section %s", section
->name
);
1288 case LOC_THREAD_LOCAL_STATIC
:
1290 "a thread-local variable at offset %ld from the thread base register %s",
1291 val
, REGISTER_NAME (basereg
));
1294 case LOC_OPTIMIZED_OUT
:
1295 printf_filtered ("optimized out");
1299 printf_filtered ("of unknown (botched) type");
1302 printf_filtered (".\n");
1306 x_command (char *exp
, int from_tty
)
1308 struct expression
*expr
;
1309 struct format_data fmt
;
1310 struct cleanup
*old_chain
;
1313 fmt
.format
= last_format
;
1314 fmt
.size
= last_size
;
1317 if (exp
&& *exp
== '/')
1320 fmt
= decode_format (&exp
, last_format
, last_size
);
1323 /* If we have an expression, evaluate it and use it as the address. */
1325 if (exp
!= 0 && *exp
!= 0)
1327 expr
= parse_expression (exp
);
1328 /* Cause expression not to be there any more
1329 if this command is repeated with Newline.
1330 But don't clobber a user-defined command's definition. */
1333 old_chain
= make_cleanup (free_current_contents
, &expr
);
1334 val
= evaluate_expression (expr
);
1335 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_REF
)
1336 val
= value_ind (val
);
1337 /* In rvalue contexts, such as this, functions are coerced into
1338 pointers to functions. This makes "x/i main" work. */
1339 if (/* last_format == 'i' && */
1340 TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_FUNC
1341 && VALUE_LVAL (val
) == lval_memory
)
1342 next_address
= VALUE_ADDRESS (val
);
1344 next_address
= value_as_pointer (val
);
1345 if (VALUE_BFD_SECTION (val
))
1346 next_section
= VALUE_BFD_SECTION (val
);
1347 do_cleanups (old_chain
);
1350 do_examine (fmt
, next_address
, next_section
);
1352 /* If the examine succeeds, we remember its size and format for next time. */
1353 last_size
= fmt
.size
;
1354 last_format
= fmt
.format
;
1356 /* Set a couple of internal variables if appropriate. */
1357 if (last_examine_value
)
1359 /* Make last address examined available to the user as $_. Use
1360 the correct pointer type. */
1361 struct type
*pointer_type
1362 = lookup_pointer_type (VALUE_TYPE (last_examine_value
));
1363 set_internalvar (lookup_internalvar ("_"),
1364 value_from_pointer (pointer_type
,
1365 last_examine_address
));
1367 /* Make contents of last address examined available to the user as $__. */
1368 /* If the last value has not been fetched from memory then don't
1369 fetch it now - instead mark it by voiding the $__ variable. */
1370 if (VALUE_LAZY (last_examine_value
))
1371 set_internalvar (lookup_internalvar ("__"),
1372 allocate_value (builtin_type_void
));
1374 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1379 /* Add an expression to the auto-display chain.
1380 Specify the expression. */
1383 display_command (char *exp
, int from_tty
)
1385 struct format_data fmt
;
1386 register struct expression
*expr
;
1387 register struct display
*new;
1391 if (tui_version
&& *exp
== '$')
1392 display_it
= ((TuiStatus
) tuiDo (
1393 (TuiOpaqueFuncPtr
) tui_vSetLayoutTo
, exp
) == TUI_FAILURE
);
1407 fmt
= decode_format (&exp
, 0, 0);
1408 if (fmt
.size
&& fmt
.format
== 0)
1410 if (fmt
.format
== 'i' || fmt
.format
== 's')
1420 innermost_block
= 0;
1421 expr
= parse_expression (exp
);
1423 new = (struct display
*) xmalloc (sizeof (struct display
));
1426 new->block
= innermost_block
;
1427 new->next
= display_chain
;
1428 new->number
= ++display_number
;
1430 new->status
= enabled
;
1431 display_chain
= new;
1433 if (from_tty
&& target_has_execution
)
1434 do_one_display (new);
1441 free_display (struct display
*d
)
1447 /* Clear out the display_chain.
1448 Done when new symtabs are loaded, since this invalidates
1449 the types stored in many expressions. */
1452 clear_displays (void)
1454 register struct display
*d
;
1456 while ((d
= display_chain
) != NULL
)
1459 display_chain
= d
->next
;
1464 /* Delete the auto-display number NUM. */
1467 delete_display (int num
)
1469 register struct display
*d1
, *d
;
1472 error ("No display number %d.", num
);
1474 if (display_chain
->number
== num
)
1477 display_chain
= d1
->next
;
1481 for (d
= display_chain
;; d
= d
->next
)
1484 error ("No display number %d.", num
);
1485 if (d
->next
->number
== num
)
1495 /* Delete some values from the auto-display chain.
1496 Specify the element numbers. */
1499 undisplay_command (char *args
, int from_tty
)
1501 register char *p
= args
;
1507 if (query ("Delete all auto-display expressions? "))
1516 while (*p1
>= '0' && *p1
<= '9')
1518 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1519 error ("Arguments must be display numbers.");
1523 delete_display (num
);
1526 while (*p
== ' ' || *p
== '\t')
1532 /* Display a single auto-display.
1533 Do nothing if the display cannot be printed in the current context,
1534 or if the display is disabled. */
1537 do_one_display (struct display
*d
)
1539 int within_current_scope
;
1541 if (d
->status
== disabled
)
1545 within_current_scope
= contained_in (get_selected_block (), d
->block
);
1547 within_current_scope
= 1;
1548 if (!within_current_scope
)
1551 current_display_number
= d
->number
;
1553 annotate_display_begin ();
1554 printf_filtered ("%d", d
->number
);
1555 annotate_display_number_end ();
1556 printf_filtered (": ");
1562 annotate_display_format ();
1564 printf_filtered ("x/");
1565 if (d
->format
.count
!= 1)
1566 printf_filtered ("%d", d
->format
.count
);
1567 printf_filtered ("%c", d
->format
.format
);
1568 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1569 printf_filtered ("%c", d
->format
.size
);
1570 printf_filtered (" ");
1572 annotate_display_expression ();
1574 print_expression (d
->exp
, gdb_stdout
);
1575 annotate_display_expression_end ();
1577 if (d
->format
.count
!= 1)
1578 printf_filtered ("\n");
1580 printf_filtered (" ");
1582 val
= evaluate_expression (d
->exp
);
1583 addr
= value_as_pointer (val
);
1584 if (d
->format
.format
== 'i')
1585 addr
= ADDR_BITS_REMOVE (addr
);
1587 annotate_display_value ();
1589 do_examine (d
->format
, addr
, VALUE_BFD_SECTION (val
));
1593 annotate_display_format ();
1595 if (d
->format
.format
)
1596 printf_filtered ("/%c ", d
->format
.format
);
1598 annotate_display_expression ();
1600 print_expression (d
->exp
, gdb_stdout
);
1601 annotate_display_expression_end ();
1603 printf_filtered (" = ");
1605 annotate_display_expression ();
1607 print_formatted (evaluate_expression (d
->exp
),
1608 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1609 printf_filtered ("\n");
1612 annotate_display_end ();
1614 gdb_flush (gdb_stdout
);
1615 current_display_number
= -1;
1618 /* Display all of the values on the auto-display chain which can be
1619 evaluated in the current scope. */
1624 register struct display
*d
;
1626 for (d
= display_chain
; d
; d
= d
->next
)
1630 /* Delete the auto-display which we were in the process of displaying.
1631 This is done when there is an error or a signal. */
1634 disable_display (int num
)
1636 register struct display
*d
;
1638 for (d
= display_chain
; d
; d
= d
->next
)
1639 if (d
->number
== num
)
1641 d
->status
= disabled
;
1644 printf_unfiltered ("No display number %d.\n", num
);
1648 disable_current_display (void)
1650 if (current_display_number
>= 0)
1652 disable_display (current_display_number
);
1653 fprintf_unfiltered (gdb_stderr
, "Disabling display %d to avoid infinite recursion.\n",
1654 current_display_number
);
1656 current_display_number
= -1;
1660 display_info (char *ignore
, int from_tty
)
1662 register struct display
*d
;
1665 printf_unfiltered ("There are no auto-display expressions now.\n");
1667 printf_filtered ("Auto-display expressions now in effect:\n\
1668 Num Enb Expression\n");
1670 for (d
= display_chain
; d
; d
= d
->next
)
1672 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->status
]);
1674 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1676 else if (d
->format
.format
)
1677 printf_filtered ("/%c ", d
->format
.format
);
1678 print_expression (d
->exp
, gdb_stdout
);
1679 if (d
->block
&& !contained_in (get_selected_block (), d
->block
))
1680 printf_filtered (" (cannot be evaluated in the current context)");
1681 printf_filtered ("\n");
1682 gdb_flush (gdb_stdout
);
1687 enable_display (char *args
, int from_tty
)
1689 register char *p
= args
;
1692 register struct display
*d
;
1696 for (d
= display_chain
; d
; d
= d
->next
)
1697 d
->status
= enabled
;
1703 while (*p1
>= '0' && *p1
<= '9')
1705 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1706 error ("Arguments must be display numbers.");
1710 for (d
= display_chain
; d
; d
= d
->next
)
1711 if (d
->number
== num
)
1713 d
->status
= enabled
;
1716 printf_unfiltered ("No display number %d.\n", num
);
1719 while (*p
== ' ' || *p
== '\t')
1726 disable_display_command (char *args
, int from_tty
)
1728 register char *p
= args
;
1730 register struct display
*d
;
1734 for (d
= display_chain
; d
; d
= d
->next
)
1735 d
->status
= disabled
;
1741 while (*p1
>= '0' && *p1
<= '9')
1743 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1744 error ("Arguments must be display numbers.");
1746 disable_display (atoi (p
));
1749 while (*p
== ' ' || *p
== '\t')
1755 /* Print the value in stack frame FRAME of a variable
1756 specified by a struct symbol. */
1759 print_variable_value (struct symbol
*var
, struct frame_info
*frame
,
1760 struct ui_file
*stream
)
1762 value_ptr val
= read_var_value (var
, frame
);
1764 value_print (val
, stream
, 0, Val_pretty_default
);
1767 /* Print the arguments of a stack frame, given the function FUNC
1768 running in that frame (as a symbol), the info on the frame,
1769 and the number of args according to the stack frame (or -1 if unknown). */
1771 /* References here and elsewhere to "number of args according to the
1772 stack frame" appear in all cases to refer to "number of ints of args
1773 according to the stack frame". At least for VAX, i386, isi. */
1776 print_frame_args (struct symbol
*func
, struct frame_info
*fi
, int num
,
1777 struct ui_file
*stream
)
1779 struct block
*b
= NULL
;
1783 register struct symbol
*sym
;
1784 register value_ptr val
;
1785 /* Offset of next stack argument beyond the one we have seen that is
1786 at the highest offset.
1787 -1 if we haven't come to a stack argument yet. */
1788 long highest_offset
= -1;
1790 /* Number of ints of arguments that we have printed so far. */
1791 int args_printed
= 0;
1793 struct cleanup
*old_chain
, *list_chain
;
1794 struct ui_stream
*stb
;
1796 stb
= ui_out_stream_new (uiout
);
1797 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1802 b
= SYMBOL_BLOCK_VALUE (func
);
1803 nsyms
= BLOCK_NSYMS (b
);
1806 for (i
= 0; i
< nsyms
; i
++)
1809 sym
= BLOCK_SYM (b
, i
);
1811 /* Keep track of the highest stack argument offset seen, and
1812 skip over any kinds of symbols we don't care about. */
1814 switch (SYMBOL_CLASS (sym
))
1819 long current_offset
= SYMBOL_VALUE (sym
);
1820 arg_size
= TYPE_LENGTH (SYMBOL_TYPE (sym
));
1822 /* Compute address of next argument by adding the size of
1823 this argument and rounding to an int boundary. */
1825 ((current_offset
+ arg_size
+ sizeof (int) - 1)
1826 & ~(sizeof (int) - 1));
1828 /* If this is the highest offset seen yet, set highest_offset. */
1829 if (highest_offset
== -1
1830 || (current_offset
> highest_offset
))
1831 highest_offset
= current_offset
;
1833 /* Add the number of ints we're about to print to args_printed. */
1834 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
1837 /* We care about types of symbols, but don't need to keep track of
1838 stack offsets in them. */
1840 case LOC_REGPARM_ADDR
:
1842 case LOC_BASEREG_ARG
:
1845 /* Other types of symbols we just skip over. */
1850 /* We have to look up the symbol because arguments can have
1851 two entries (one a parameter, one a local) and the one we
1852 want is the local, which lookup_symbol will find for us.
1853 This includes gcc1 (not gcc2) on the sparc when passing a
1854 small structure and gcc2 when the argument type is float
1855 and it is passed as a double and converted to float by
1856 the prologue (in the latter case the type of the LOC_ARG
1857 symbol is double and the type of the LOC_LOCAL symbol is
1859 /* But if the parameter name is null, don't try it.
1860 Null parameter names occur on the RS/6000, for traceback tables.
1861 FIXME, should we even print them? */
1863 if (*SYMBOL_NAME (sym
))
1865 struct symbol
*nsym
;
1866 nsym
= lookup_symbol
1868 b
, VAR_NAMESPACE
, (int *) NULL
, (struct symtab
**) NULL
);
1869 if (SYMBOL_CLASS (nsym
) == LOC_REGISTER
)
1871 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1872 it was passed on the stack and loaded into a register,
1873 or passed in a register and stored in a stack slot.
1874 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1876 Reasons for using the LOC_ARG:
1877 (1) because find_saved_registers may be slow for remote
1879 (2) because registers are often re-used and stack slots
1880 rarely (never?) are. Therefore using the stack slot is
1881 much less likely to print garbage.
1883 Reasons why we might want to use the LOC_REGISTER:
1884 (1) So that the backtrace prints the same value as
1885 "print foo". I see no compelling reason why this needs
1886 to be the case; having the backtrace print the value which
1887 was passed in, and "print foo" print the value as modified
1888 within the called function, makes perfect sense to me.
1890 Additional note: It might be nice if "info args" displayed
1892 One more note: There is a case with sparc structure passing
1893 where we need to use the LOC_REGISTER, but this is dealt with
1894 by creating a single LOC_REGPARM in symbol reading. */
1896 /* Leave sym (the LOC_ARG) alone. */
1904 /* Print the current arg. */
1906 ui_out_text (uiout
, ", ");
1907 ui_out_wrap_hint (uiout
, " ");
1909 annotate_arg_begin ();
1911 list_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, NULL
);
1912 fprintf_symbol_filtered (stb
->stream
, SYMBOL_SOURCE_NAME (sym
),
1913 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1914 ui_out_field_stream (uiout
, "name", stb
);
1915 annotate_arg_name_end ();
1916 ui_out_text (uiout
, "=");
1918 /* Print the current arg. */
1920 fprintf_filtered (stream
, ", ");
1923 annotate_arg_begin ();
1925 fprintf_symbol_filtered (stream
, SYMBOL_SOURCE_NAME (sym
),
1926 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1927 annotate_arg_name_end ();
1928 fputs_filtered ("=", stream
);
1931 /* Avoid value_print because it will deref ref parameters. We just
1932 want to print their addresses. Print ??? for args whose address
1933 we do not know. We pass 2 as "recurse" to val_print because our
1934 standard indentation here is 4 spaces, and val_print indents
1935 2 for each recurse. */
1936 val
= read_var_value (sym
, fi
);
1938 annotate_arg_value (val
== NULL
? NULL
: VALUE_TYPE (val
));
1942 if (GDB_TARGET_IS_D10V
1943 && SYMBOL_CLASS (sym
) == LOC_REGPARM
&& TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_PTR
)
1944 TYPE_LENGTH (VALUE_TYPE (val
)) = 2;
1946 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
1947 VALUE_ADDRESS (val
),
1948 stb
->stream
, 0, 0, 2, Val_no_prettyprint
);
1949 ui_out_field_stream (uiout
, "value", stb
);
1952 ui_out_text (uiout
, "???");
1954 /* Invoke ui_out_tuple_end. */
1955 do_cleanups (list_chain
);
1957 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
1958 VALUE_ADDRESS (val
),
1959 stream
, 0, 0, 2, Val_no_prettyprint
);
1962 fputs_filtered ("???", stream
);
1965 annotate_arg_end ();
1970 /* Don't print nameless args in situations where we don't know
1971 enough about the stack to find them. */
1976 if (highest_offset
== -1)
1977 start
= FRAME_ARGS_SKIP
;
1979 start
= highest_offset
;
1981 print_frame_nameless_args (fi
, start
, num
- args_printed
,
1985 do_cleanups (old_chain
);
1986 #endif /* no UI_OUT */
1989 /* Print nameless args on STREAM.
1990 FI is the frameinfo for this frame, START is the offset
1991 of the first nameless arg, and NUM is the number of nameless args to
1992 print. FIRST is nonzero if this is the first argument (not just
1993 the first nameless arg). */
1996 print_frame_nameless_args (struct frame_info
*fi
, long start
, int num
,
1997 int first
, struct ui_file
*stream
)
2003 for (i
= 0; i
< num
; i
++)
2006 #ifdef NAMELESS_ARG_VALUE
2007 NAMELESS_ARG_VALUE (fi
, start
, &arg_value
);
2009 argsaddr
= FRAME_ARGS_ADDRESS (fi
);
2013 arg_value
= read_memory_integer (argsaddr
+ start
, sizeof (int));
2017 fprintf_filtered (stream
, ", ");
2019 #ifdef PRINT_NAMELESS_INTEGER
2020 PRINT_NAMELESS_INTEGER (stream
, arg_value
);
2022 #ifdef PRINT_TYPELESS_INTEGER
2023 PRINT_TYPELESS_INTEGER (stream
, builtin_type_int
, (LONGEST
) arg_value
);
2025 fprintf_filtered (stream
, "%ld", arg_value
);
2026 #endif /* PRINT_TYPELESS_INTEGER */
2027 #endif /* PRINT_NAMELESS_INTEGER */
2029 start
+= sizeof (int);
2035 printf_command (char *arg
, int from_tty
)
2037 register char *f
= NULL
;
2038 register char *s
= arg
;
2039 char *string
= NULL
;
2040 value_ptr
*val_args
;
2042 char *current_substring
;
2044 int allocated_args
= 20;
2045 struct cleanup
*old_cleanups
;
2047 val_args
= (value_ptr
*) xmalloc (allocated_args
* sizeof (value_ptr
));
2048 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
2051 error_no_arg ("format-control string and values to print");
2053 /* Skip white space before format string */
2054 while (*s
== ' ' || *s
== '\t')
2057 /* A format string should follow, enveloped in double quotes */
2059 error ("Bad format string, missing '\"'.");
2061 /* Parse the format-control string and copy it into the string STRING,
2062 processing some kinds of escape sequence. */
2064 f
= string
= (char *) alloca (strlen (s
) + 1);
2072 error ("Bad format string, non-terminated '\"'.");
2105 /* ??? TODO: handle other escape sequences */
2106 error ("Unrecognized escape character \\%c in format string.",
2116 /* Skip over " and following space and comma. */
2119 while (*s
== ' ' || *s
== '\t')
2122 if (*s
!= ',' && *s
!= 0)
2123 error ("Invalid argument syntax");
2127 while (*s
== ' ' || *s
== '\t')
2130 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2131 substrings
= alloca (strlen (string
) * 2);
2132 current_substring
= substrings
;
2135 /* Now scan the string for %-specs and see what kinds of args they want.
2136 argclass[I] classifies the %-specs so we can give printf_filtered
2137 something of the right size. */
2141 no_arg
, int_arg
, string_arg
, double_arg
, long_long_arg
2143 enum argclass
*argclass
;
2144 enum argclass this_argclass
;
2150 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
2158 while (strchr ("0123456789.hlL-+ #", *f
))
2160 if (*f
== 'l' || *f
== 'L')
2167 this_argclass
= string_arg
;
2173 this_argclass
= double_arg
;
2177 error ("`*' not supported for precision or width in printf");
2180 error ("Format specifier `n' not supported in printf");
2183 this_argclass
= no_arg
;
2188 this_argclass
= long_long_arg
;
2190 this_argclass
= int_arg
;
2194 if (this_argclass
!= no_arg
)
2196 strncpy (current_substring
, last_arg
, f
- last_arg
);
2197 current_substring
+= f
- last_arg
;
2198 *current_substring
++ = '\0';
2200 argclass
[nargs_wanted
++] = this_argclass
;
2204 /* Now, parse all arguments and evaluate them.
2205 Store the VALUEs in VAL_ARGS. */
2210 if (nargs
== allocated_args
)
2211 val_args
= (value_ptr
*) xrealloc ((char *) val_args
,
2212 (allocated_args
*= 2)
2213 * sizeof (value_ptr
));
2215 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2217 /* If format string wants a float, unchecked-convert the value to
2218 floating point of the same size */
2220 if (argclass
[nargs
] == double_arg
)
2222 struct type
*type
= VALUE_TYPE (val_args
[nargs
]);
2223 if (TYPE_LENGTH (type
) == sizeof (float))
2224 VALUE_TYPE (val_args
[nargs
]) = builtin_type_float
;
2225 if (TYPE_LENGTH (type
) == sizeof (double))
2226 VALUE_TYPE (val_args
[nargs
]) = builtin_type_double
;
2234 if (nargs
!= nargs_wanted
)
2235 error ("Wrong number of arguments for specified format-string");
2237 /* Now actually print them. */
2238 current_substring
= substrings
;
2239 for (i
= 0; i
< nargs
; i
++)
2241 switch (argclass
[i
])
2248 tem
= value_as_pointer (val_args
[i
]);
2250 /* This is a %s argument. Find the length of the string. */
2255 read_memory (tem
+ j
, &c
, 1);
2260 /* Copy the string contents into a string inside GDB. */
2261 str
= (char *) alloca (j
+ 1);
2263 read_memory (tem
, str
, j
);
2266 printf_filtered (current_substring
, str
);
2271 double val
= value_as_double (val_args
[i
]);
2272 printf_filtered (current_substring
, val
);
2276 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2278 long long val
= value_as_long (val_args
[i
]);
2279 printf_filtered (current_substring
, val
);
2283 error ("long long not supported in printf");
2287 /* FIXME: there should be separate int_arg and long_arg. */
2288 long val
= value_as_long (val_args
[i
]);
2289 printf_filtered (current_substring
, val
);
2292 default: /* purecov: deadcode */
2293 error ("internal error in printf_command"); /* purecov: deadcode */
2295 /* Skip to the next substring. */
2296 current_substring
+= strlen (current_substring
) + 1;
2298 /* Print the portion of the format string after the last argument. */
2299 printf_filtered (last_arg
);
2301 do_cleanups (old_cleanups
);
2304 /* Dump a specified section of assembly code. With no command line
2305 arguments, this command will dump the assembly code for the
2306 function surrounding the pc value in the selected frame. With one
2307 argument, it will dump the assembly code surrounding that pc value.
2308 Two arguments are interpeted as bounds within which to dump
2313 disassemble_command (char *arg
, int from_tty
)
2315 CORE_ADDR low
, high
;
2317 CORE_ADDR pc
, pc_masked
;
2326 if (!selected_frame
)
2327 error ("No frame selected.\n");
2329 pc
= get_frame_pc (selected_frame
);
2330 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2331 error ("No function contains program counter for selected frame.\n");
2333 else if (tui_version
)
2334 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2338 low
+= FUNCTION_START_OFFSET
;
2340 else if (!(space_index
= (char *) strchr (arg
, ' ')))
2343 pc
= parse_and_eval_address (arg
);
2344 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2345 error ("No function contains specified address.\n");
2347 else if (tui_version
)
2348 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2353 if (overlay_debugging
)
2355 section
= find_pc_overlay (pc
);
2356 if (pc_in_unmapped_range (pc
, section
))
2358 /* find_pc_partial_function will have returned low and high
2359 relative to the symbolic (mapped) address range. Need to
2360 translate them back to the unmapped range where PC is. */
2361 low
= overlay_unmapped_address (low
, section
);
2362 high
= overlay_unmapped_address (high
, section
);
2366 low
+= FUNCTION_START_OFFSET
;
2370 /* Two arguments. */
2371 *space_index
= '\0';
2372 low
= parse_and_eval_address (arg
);
2373 high
= parse_and_eval_address (space_index
+ 1);
2378 m_winPtrIsNull (disassemWin
) || !disassemWin
->generic
.isVisible
)
2381 printf_filtered ("Dump of assembler code ");
2384 printf_filtered ("for function %s:\n", name
);
2388 printf_filtered ("from ");
2389 print_address_numeric (low
, 1, gdb_stdout
);
2390 printf_filtered (" to ");
2391 print_address_numeric (high
, 1, gdb_stdout
);
2392 printf_filtered (":\n");
2395 /* Dump the specified range. */
2398 #ifdef GDB_TARGET_MASK_DISAS_PC
2399 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2404 while (pc_masked
< high
)
2407 print_address (pc_masked
, gdb_stdout
);
2408 printf_filtered (":\t");
2409 /* We often wrap here if there are long symbolic names. */
2411 pc
+= print_insn (pc
, gdb_stdout
);
2412 printf_filtered ("\n");
2414 #ifdef GDB_TARGET_MASK_DISAS_PC
2415 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2420 printf_filtered ("End of assembler dump.\n");
2421 gdb_flush (gdb_stdout
);
2426 tuiDo ((TuiOpaqueFuncPtr
) tui_vAddWinToLayout
, DISASSEM_WIN
);
2427 tuiDo ((TuiOpaqueFuncPtr
) tui_vUpdateSourceWindowsWithAddr
, low
);
2432 /* Print the instruction at address MEMADDR in debugged memory,
2433 on STREAM. Returns length of the instruction, in bytes. */
2436 print_insn (CORE_ADDR memaddr
, struct ui_file
*stream
)
2438 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2439 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_BIG
;
2441 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_LITTLE
;
2443 if (TARGET_ARCHITECTURE
!= NULL
)
2444 TARGET_PRINT_INSN_INFO
->mach
= TARGET_ARCHITECTURE
->mach
;
2445 /* else: should set .mach=0 but some disassemblers don't grok this */
2447 return TARGET_PRINT_INSN (memaddr
, TARGET_PRINT_INSN_INFO
);
2452 _initialize_printcmd (void)
2454 current_display_number
= -1;
2456 add_info ("address", address_info
,
2457 "Describe where symbol SYM is stored.");
2459 add_info ("symbol", sym_info
,
2460 "Describe what symbol is at location ADDR.\n\
2461 Only for symbols with fixed locations (global or static scope).");
2463 add_com ("x", class_vars
, x_command
,
2464 concat ("Examine memory: x/FMT ADDRESS.\n\
2465 ADDRESS is an expression for the memory address to examine.\n\
2466 FMT is a repeat count followed by a format letter and a size letter.\n\
2467 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2468 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
2469 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2470 The specified number of objects of the specified size are printed\n\
2471 according to the format.\n\n\
2472 Defaults for format and size letters are those previously used.\n\
2473 Default count is 1. Default address is following last thing printed\n\
2474 with this command or \"print\".", NULL
));
2476 add_com ("disassemble", class_vars
, disassemble_command
,
2477 "Disassemble a specified section of memory.\n\
2478 Default is the function surrounding the pc of the selected frame.\n\
2479 With a single argument, the function surrounding that address is dumped.\n\
2480 Two arguments are taken as a range of memory to dump.");
2482 add_com_alias ("va", "disassemble", class_xdb
, 0);
2485 add_com ("whereis", class_vars
, whereis_command
,
2486 "Print line number and file of definition of variable.");
2489 add_info ("display", display_info
,
2490 "Expressions to display when program stops, with code numbers.");
2492 add_cmd ("undisplay", class_vars
, undisplay_command
,
2493 "Cancel some expressions to be displayed when program stops.\n\
2494 Arguments are the code numbers of the expressions to stop displaying.\n\
2495 No argument means cancel all automatic-display expressions.\n\
2496 \"delete display\" has the same effect as this command.\n\
2497 Do \"info display\" to see current list of code numbers.",
2500 add_com ("display", class_vars
, display_command
,
2501 "Print value of expression EXP each time the program stops.\n\
2502 /FMT may be used before EXP as in the \"print\" command.\n\
2503 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2504 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2505 and examining is done as in the \"x\" command.\n\n\
2506 With no argument, display all currently requested auto-display expressions.\n\
2507 Use \"undisplay\" to cancel display requests previously made."
2510 add_cmd ("display", class_vars
, enable_display
,
2511 "Enable some expressions to be displayed when program stops.\n\
2512 Arguments are the code numbers of the expressions to resume displaying.\n\
2513 No argument means enable all automatic-display expressions.\n\
2514 Do \"info display\" to see current list of code numbers.", &enablelist
);
2516 add_cmd ("display", class_vars
, disable_display_command
,
2517 "Disable some expressions to be displayed when program stops.\n\
2518 Arguments are the code numbers of the expressions to stop displaying.\n\
2519 No argument means disable all automatic-display expressions.\n\
2520 Do \"info display\" to see current list of code numbers.", &disablelist
);
2522 add_cmd ("display", class_vars
, undisplay_command
,
2523 "Cancel some expressions to be displayed when program stops.\n\
2524 Arguments are the code numbers of the expressions to stop displaying.\n\
2525 No argument means cancel all automatic-display expressions.\n\
2526 Do \"info display\" to see current list of code numbers.", &deletelist
);
2528 add_com ("printf", class_vars
, printf_command
,
2529 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2530 This is useful for formatted output in user-defined commands.");
2532 add_com ("output", class_vars
, output_command
,
2533 "Like \"print\" but don't put in value history and don't print newline.\n\
2534 This is useful in user-defined commands.");
2536 add_prefix_cmd ("set", class_vars
, set_command
,
2537 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2538 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2539 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2540 with $), a register (a few standard names starting with $), or an actual\n\
2541 variable in the program being debugged. EXP is any valid expression.\n",
2542 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2543 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2544 You can see these environment settings with the \"show\" command.", NULL
),
2545 &setlist
, "set ", 1, &cmdlist
);
2547 add_com ("assign", class_vars
, set_command
, concat ("Evaluate expression \
2548 EXP and assign result to variable VAR, using assignment\n\
2549 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2550 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2551 with $), a register (a few standard names starting with $), or an actual\n\
2552 variable in the program being debugged. EXP is any valid expression.\n",
2553 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2554 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2555 You can see these environment settings with the \"show\" command.", NULL
));
2557 /* "call" is the same as "set", but handy for dbx users to call fns. */
2558 add_com ("call", class_vars
, call_command
,
2559 "Call a function in the program.\n\
2560 The argument is the function name and arguments, in the notation of the\n\
2561 current working language. The result is printed and saved in the value\n\
2562 history, if it is not void.");
2564 add_cmd ("variable", class_vars
, set_command
,
2565 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2566 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2567 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2568 with $), a register (a few standard names starting with $), or an actual\n\
2569 variable in the program being debugged. EXP is any valid expression.\n\
2570 This may usually be abbreviated to simply \"set\".",
2573 add_com ("print", class_vars
, print_command
,
2574 concat ("Print value of expression EXP.\n\
2575 Variables accessible are those of the lexical environment of the selected\n\
2576 stack frame, plus all those whose scope is global or an entire file.\n\
2578 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2579 $$NUM refers to NUM'th value back from the last one.\n\
2580 Names starting with $ refer to registers (with the values they would have\n",
2581 "if the program were to return to the stack frame now selected, restoring\n\
2582 all registers saved by frames farther in) or else to debugger\n\
2583 \"convenience\" variables (any such name not a known register).\n\
2584 Use assignment expressions to give values to convenience variables.\n",
2586 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2587 @ is a binary operator for treating consecutive data objects\n\
2588 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2589 element is FOO, whose second element is stored in the space following\n\
2590 where FOO is stored, etc. FOO must be an expression whose value\n\
2591 resides in memory.\n",
2593 EXP may be preceded with /FMT, where FMT is a format letter\n\
2594 but no count or size letter (see \"x\" command).", NULL
));
2595 add_com_alias ("p", "print", class_vars
, 1);
2597 add_com ("inspect", class_vars
, inspect_command
,
2598 "Same as \"print\" command, except that if you are running in the epoch\n\
2599 environment, the value is printed in its own window.");
2602 add_set_cmd ("max-symbolic-offset", no_class
, var_uinteger
,
2603 (char *) &max_symbolic_offset
,
2604 "Set the largest offset that will be printed in <symbol+1234> form.",
2608 add_set_cmd ("symbol-filename", no_class
, var_boolean
,
2609 (char *) &print_symbol_filename
,
2610 "Set printing of source filename and line number with <symbol>.",
2614 /* For examine/instruction a single byte quantity is specified as
2615 the data. This avoids problems with value_at_lazy() requiring a
2616 valid data type (and rejecting VOID). */
2617 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2619 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2620 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2621 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2622 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);