1 /* Print values for GNU debugger GDB.
2 Copyright 1986-1991, 1993-1995, 1998, 2000 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
22 #include "gdb_string.h"
28 #include "expression.h"
32 #include "breakpoint.h"
36 #include "symfile.h" /* for overlay functions */
37 #include "objfiles.h" /* ditto */
42 extern int asm_demangle
; /* Whether to demangle syms in asm printouts */
43 extern int addressprint
; /* Whether to print hex addresses in HLL " */
52 /* Last specified output format. */
54 static char last_format
= 'x';
56 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
58 static char last_size
= 'w';
60 /* Default address to examine next. */
62 static CORE_ADDR next_address
;
64 /* Default section to examine next. */
66 static asection
*next_section
;
68 /* Last address examined. */
70 static CORE_ADDR last_examine_address
;
72 /* Contents of last address examined.
73 This is not valid past the end of the `x' command! */
75 static value_ptr last_examine_value
;
77 /* Largest offset between a symbolic value and an address, that will be
78 printed as `0x1234 <symbol+offset>'. */
80 static unsigned int max_symbolic_offset
= UINT_MAX
;
82 /* Append the source filename and linenumber of the symbol when
83 printing a symbolic value as `<symbol at filename:linenum>' if set. */
84 static int print_symbol_filename
= 0;
86 /* Number of auto-display expression currently being displayed.
87 So that we can disable it if we get an error or a signal within it.
88 -1 when not doing one. */
90 int current_display_number
;
92 /* Flag to low-level print routines that this value is being printed
93 in an epoch window. We'd like to pass this as a parameter, but
94 every routine would need to take it. Perhaps we can encapsulate
95 this in the I/O stream once we have GNU stdio. */
101 /* Chain link to next auto-display item. */
102 struct display
*next
;
103 /* Expression to be evaluated and displayed. */
104 struct expression
*exp
;
105 /* Item number of this auto-display item. */
107 /* Display format specified. */
108 struct format_data format
;
109 /* Innermost block required by this expression when evaluated */
111 /* Status of this display (enabled or disabled) */
115 /* Chain of expressions whose values should be displayed
116 automatically each time the program stops. */
118 static struct display
*display_chain
;
120 static int display_number
;
122 /* Prototypes for exported functions. */
124 void output_command
PARAMS ((char *, int));
126 void _initialize_printcmd
PARAMS ((void));
128 /* Prototypes for local functions. */
130 static void delete_display
PARAMS ((int));
132 static void enable_display
PARAMS ((char *, int));
134 static void disable_display_command
PARAMS ((char *, int));
136 static void disassemble_command
PARAMS ((char *, int));
138 static void printf_command
PARAMS ((char *, int));
140 static void print_frame_nameless_args (struct frame_info
*, long,
141 int, int, struct ui_file
*);
143 static void display_info
PARAMS ((char *, int));
145 static void do_one_display
PARAMS ((struct display
*));
147 static void undisplay_command
PARAMS ((char *, int));
149 static void free_display
PARAMS ((struct display
*));
151 static void display_command
PARAMS ((char *, int));
153 void x_command
PARAMS ((char *, int));
155 static void address_info
PARAMS ((char *, int));
157 static void set_command
PARAMS ((char *, int));
159 static void call_command
PARAMS ((char *, int));
161 static void inspect_command
PARAMS ((char *, int));
163 static void print_command
PARAMS ((char *, int));
165 static void print_command_1
PARAMS ((char *, int, int));
167 static void validate_format
PARAMS ((struct format_data
, char *));
169 static void do_examine
PARAMS ((struct format_data
, CORE_ADDR addr
, asection
* section
));
171 static void print_formatted (value_ptr
, int, int, struct ui_file
*);
173 static struct format_data decode_format
PARAMS ((char **, int, int));
175 static int print_insn (CORE_ADDR
, struct ui_file
*);
177 static void sym_info
PARAMS ((char *, int));
180 /* Decode a format specification. *STRING_PTR should point to it.
181 OFORMAT and OSIZE are used as defaults for the format and size
182 if none are given in the format specification.
183 If OSIZE is zero, then the size field of the returned value
184 should be set only if a size is explicitly specified by the
186 The structure returned describes all the data
187 found in the specification. In addition, *STRING_PTR is advanced
188 past the specification and past all whitespace following it. */
190 static struct format_data
191 decode_format (string_ptr
, oformat
, osize
)
196 struct format_data val
;
197 register char *p
= *string_ptr
;
203 if (*p
>= '0' && *p
<= '9')
204 val
.count
= atoi (p
);
205 while (*p
>= '0' && *p
<= '9')
208 /* Now process size or format letters that follow. */
212 if (*p
== 'b' || *p
== 'h' || *p
== 'w' || *p
== 'g')
214 else if (*p
>= 'a' && *p
<= 'z')
220 while (*p
== ' ' || *p
== '\t')
224 /* Set defaults for format and size if not specified. */
225 if (val
.format
== '?')
229 /* Neither has been specified. */
230 val
.format
= oformat
;
234 /* If a size is specified, any format makes a reasonable
235 default except 'i'. */
236 val
.format
= oformat
== 'i' ? 'x' : oformat
;
238 else if (val
.size
== '?')
243 /* Pick the appropriate size for an address. */
244 if (TARGET_PTR_BIT
== 64)
245 val
.size
= osize
? 'g' : osize
;
246 else if (TARGET_PTR_BIT
== 32)
247 val
.size
= osize
? 'w' : osize
;
248 else if (TARGET_PTR_BIT
== 16)
249 val
.size
= osize
? 'h' : osize
;
251 /* Bad value for TARGET_PTR_BIT */
255 /* Floating point has to be word or giantword. */
256 if (osize
== 'w' || osize
== 'g')
259 /* Default it to giantword if the last used size is not
261 val
.size
= osize
? 'g' : osize
;
264 /* Characters default to one byte. */
265 val
.size
= osize
? 'b' : osize
;
268 /* The default is the size most recently specified. */
275 /* Print value VAL on stream according to FORMAT, a letter or 0.
276 Do not end with a newline.
277 0 means print VAL according to its own type.
278 SIZE is the letter for the size of datum being printed.
279 This is used to pad hex numbers so they line up. */
282 print_formatted (val
, format
, size
, stream
)
283 register value_ptr val
;
286 struct ui_file
*stream
;
288 struct type
*type
= check_typedef (VALUE_TYPE (val
));
289 int len
= TYPE_LENGTH (type
);
291 if (VALUE_LVAL (val
) == lval_memory
)
293 next_address
= VALUE_ADDRESS (val
) + len
;
294 next_section
= VALUE_BFD_SECTION (val
);
300 /* FIXME: Need to handle wchar_t's here... */
301 next_address
= VALUE_ADDRESS (val
)
302 + val_print_string (VALUE_ADDRESS (val
), -1, 1, stream
);
303 next_section
= VALUE_BFD_SECTION (val
);
307 /* The old comment says
308 "Force output out, print_insn not using _filtered".
309 I'm not completely sure what that means, I suspect most print_insn
310 now do use _filtered, so I guess it's obsolete.
311 --Yes, it does filter now, and so this is obsolete. -JB */
313 /* We often wrap here if there are long symbolic names. */
315 next_address
= VALUE_ADDRESS (val
)
316 + print_insn (VALUE_ADDRESS (val
), stream
);
317 next_section
= VALUE_BFD_SECTION (val
);
322 || TYPE_CODE (type
) == TYPE_CODE_ARRAY
323 || TYPE_CODE (type
) == TYPE_CODE_STRING
324 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
325 || TYPE_CODE (type
) == TYPE_CODE_UNION
)
326 /* If format is 0, use the 'natural' format for
327 * that type of value. If the type is non-scalar,
328 * we have to use language rules to print it as
329 * a series of scalars.
331 value_print (val
, stream
, format
, Val_pretty_default
);
333 /* User specified format, so don't look to the
334 * the type to tell us what to do.
336 print_scalar_formatted (VALUE_CONTENTS (val
), type
,
337 format
, size
, stream
);
341 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
342 according to letters FORMAT and SIZE on STREAM.
343 FORMAT may not be zero. Formats s and i are not supported at this level.
345 This is how the elements of an array or structure are printed
349 print_scalar_formatted (valaddr
, type
, format
, size
, stream
)
354 struct ui_file
*stream
;
357 unsigned int len
= TYPE_LENGTH (type
);
359 if (len
> sizeof (LONGEST
)
367 if (!TYPE_UNSIGNED (type
)
368 || !extract_long_unsigned_integer (valaddr
, len
, &val_long
))
370 /* We can't print it normally, but we can print it in hex.
371 Printing it in the wrong radix is more useful than saying
372 "use /x, you dummy". */
373 /* FIXME: we could also do octal or binary if that was the
375 /* FIXME: we should be using the size field to give us a
376 minimum field width to print. */
379 print_octal_chars (stream
, valaddr
, len
);
380 else if (format
== 'd')
381 print_decimal_chars (stream
, valaddr
, len
);
382 else if (format
== 't')
383 print_binary_chars (stream
, valaddr
, len
);
385 /* replace with call to print_hex_chars? Looks
386 like val_print_type_code_int is redoing
389 val_print_type_code_int (type
, valaddr
, stream
);
394 /* If we get here, extract_long_unsigned_integer set val_long. */
396 else if (format
!= 'f')
397 val_long
= unpack_long (type
, valaddr
);
399 /* If we are printing it as unsigned, truncate it in case it is actually
400 a negative signed value (e.g. "print/u (short)-1" should print 65535
401 (if shorts are 16 bits) instead of 4294967295). */
404 if (len
< sizeof (LONGEST
))
405 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
413 /* no size specified, like in print. Print varying # of digits. */
414 print_longest (stream
, 'x', 1, val_long
);
423 print_longest (stream
, size
, 1, val_long
);
426 error ("Undefined output size \"%c\".", size
);
431 print_longest (stream
, 'd', 1, val_long
);
435 print_longest (stream
, 'u', 0, val_long
);
440 print_longest (stream
, 'o', 1, val_long
);
442 fprintf_filtered (stream
, "0");
447 /* Truncate address to the size of a target pointer, avoiding
448 shifts larger or equal than the width of a CORE_ADDR. The
449 local variable PTR_BIT stops the compiler reporting a shift
450 overflow when it won't occure. */
451 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
452 int ptr_bit
= TARGET_PTR_BIT
;
453 if (ptr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
454 addr
&= ((CORE_ADDR
) 1 << ptr_bit
) - 1;
455 print_address (addr
, stream
);
460 value_print (value_from_longest (builtin_type_true_char
, val_long
),
461 stream
, 0, Val_pretty_default
);
465 if (len
== sizeof (float))
466 type
= builtin_type_float
;
467 else if (len
== sizeof (double))
468 type
= builtin_type_double
;
469 print_floating (valaddr
, type
, stream
);
476 /* Binary; 't' stands for "two". */
478 char bits
[8 * (sizeof val_long
) + 1];
479 char buf
[8 * (sizeof val_long
) + 32];
484 width
= 8 * (sizeof val_long
);
501 error ("Undefined output size \"%c\".", size
);
507 bits
[width
] = (val_long
& 1) ? '1' : '0';
512 while (*cp
&& *cp
== '0')
517 strcpy (buf
, local_binary_format_prefix ());
519 strcat (buf
, local_binary_format_suffix ());
520 fprintf_filtered (stream
, buf
);
525 error ("Undefined output format \"%c\".", format
);
529 /* Specify default address for `x' command.
530 `info lines' uses this. */
533 set_next_address (addr
)
538 /* Make address available to the user as $_. */
539 set_internalvar (lookup_internalvar ("_"),
540 value_from_longest (lookup_pointer_type (builtin_type_void
),
544 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
545 after LEADIN. Print nothing if no symbolic name is found nearby.
546 Optionally also print source file and line number, if available.
547 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
548 or to interpret it as a possible C++ name and convert it back to source
549 form. However note that DO_DEMANGLE can be overridden by the specific
550 settings of the demangle and asm_demangle variables. */
553 print_address_symbolic (addr
, stream
, do_demangle
, leadin
)
555 struct ui_file
*stream
;
560 char *filename
= NULL
;
565 struct cleanup
*cleanup_chain
= make_cleanup (free
, name
);
566 if (print_symbol_filename
)
567 make_cleanup (free
, filename
);
569 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
, &filename
, &line
, &unmapped
))
572 fputs_filtered (leadin
, stream
);
574 fputs_filtered ("<*", stream
);
576 fputs_filtered ("<", stream
);
577 fputs_filtered (name
, stream
);
579 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
581 /* Append source filename and line number if desired. Give specific
582 line # of this addr, if we have it; else line # of the nearest symbol. */
583 if (print_symbol_filename
&& filename
!= NULL
)
586 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
588 fprintf_filtered (stream
, " in %s", filename
);
591 fputs_filtered ("*>", stream
);
593 fputs_filtered (">", stream
);
595 do_cleanups (cleanup_chain
);
598 /* Given an address ADDR return all the elements needed to print the
599 address in a symbolic form. NAME can be mangled or not depending
600 on DO_DEMANGLE (and also on the asm_demangle global variable,
601 manipulated via ''set print asm-demangle''). Return 0 in case of
602 success, when all the info in the OUT paramters is valid. Return 1
605 build_address_symbolic (CORE_ADDR addr
, /* IN */
606 int do_demangle
, /* IN */
607 char **name
, /* OUT */
608 int *offset
, /* OUT */
609 char **filename
, /* OUT */
611 int *unmapped
) /* OUT */
613 struct minimal_symbol
*msymbol
;
614 struct symbol
*symbol
;
615 struct symtab
*symtab
= 0;
616 CORE_ADDR name_location
= 0;
617 asection
*section
= 0;
618 char *name_temp
= "";
620 /* Let's say it is unmapped. */
623 /* Determine if the address is in an overlay, and whether it is
625 if (overlay_debugging
)
627 section
= find_pc_overlay (addr
);
628 if (pc_in_unmapped_range (addr
, section
))
631 addr
= overlay_mapped_address (addr
, section
);
635 /* On some targets, add in extra "flag" bits to PC for
636 disassembly. This should ensure that "rounding errors" in
637 symbol addresses that are masked for disassembly favour the
638 the correct symbol. */
640 #ifdef GDB_TARGET_UNMASK_DISAS_PC
641 addr
= GDB_TARGET_UNMASK_DISAS_PC (addr
);
644 /* First try to find the address in the symbol table, then
645 in the minsyms. Take the closest one. */
647 /* This is defective in the sense that it only finds text symbols. So
648 really this is kind of pointless--we should make sure that the
649 minimal symbols have everything we need (by changing that we could
650 save some memory, but for many debug format--ELF/DWARF or
651 anything/stabs--it would be inconvenient to eliminate those minimal
653 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
654 symbol
= find_pc_sect_function (addr
, section
);
658 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
660 name_temp
= SYMBOL_SOURCE_NAME (symbol
);
662 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
667 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
669 /* The msymbol is closer to the address than the symbol;
670 use the msymbol instead. */
673 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
675 name_temp
= SYMBOL_SOURCE_NAME (msymbol
);
677 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
680 if (symbol
== NULL
&& msymbol
== NULL
)
683 /* On some targets, mask out extra "flag" bits from PC for handsome
686 #ifdef GDB_TARGET_MASK_DISAS_PC
687 name_location
= GDB_TARGET_MASK_DISAS_PC (name_location
);
688 addr
= GDB_TARGET_MASK_DISAS_PC (addr
);
691 /* If the nearest symbol is too far away, don't print anything symbolic. */
693 /* For when CORE_ADDR is larger than unsigned int, we do math in
694 CORE_ADDR. But when we detect unsigned wraparound in the
695 CORE_ADDR math, we ignore this test and print the offset,
696 because addr+max_symbolic_offset has wrapped through the end
697 of the address space back to the beginning, giving bogus comparison. */
698 if (addr
> name_location
+ max_symbolic_offset
699 && name_location
+ max_symbolic_offset
> name_location
)
702 *offset
= addr
- name_location
;
704 *name
= xstrdup (name_temp
);
706 if (print_symbol_filename
)
708 struct symtab_and_line sal
;
710 sal
= find_pc_sect_line (addr
, section
, 0);
714 *filename
= xstrdup (sal
.symtab
->filename
);
717 else if (symtab
&& symbol
&& symbol
->line
)
719 *filename
= xstrdup (symtab
->filename
);
720 *line
= symbol
->line
;
724 *filename
= xstrdup (symtab
->filename
);
731 /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
734 print_address_numeric (addr
, use_local
, stream
)
737 struct ui_file
*stream
;
739 /* This assumes a CORE_ADDR can fit in a LONGEST. Probably a safe
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 (addr
, stream
)
751 struct ui_file
*stream
;
753 print_address_numeric (addr
, 1, stream
);
754 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
757 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
758 controls whether to print the symbolic name "raw" or demangled.
759 Global setting "addressprint" controls whether to print hex address
763 print_address_demangle (addr
, stream
, do_demangle
)
765 struct ui_file
*stream
;
770 fprintf_filtered (stream
, "0");
772 else if (addressprint
)
774 print_address_numeric (addr
, 1, stream
);
775 print_address_symbolic (addr
, stream
, do_demangle
, " ");
779 print_address_symbolic (addr
, stream
, do_demangle
, "");
784 /* These are the types that $__ will get after an examine command of one
787 static struct type
*examine_i_type
;
789 static struct type
*examine_b_type
;
790 static struct type
*examine_h_type
;
791 static struct type
*examine_w_type
;
792 static struct type
*examine_g_type
;
794 /* Examine data at address ADDR in format FMT.
795 Fetch it from memory and print on gdb_stdout. */
798 do_examine (fmt
, addr
, sect
)
799 struct format_data fmt
;
803 register char format
= 0;
805 register int count
= 1;
806 struct type
*val_type
= NULL
;
808 register int maxelts
;
816 /* String or instruction format implies fetch single bytes
817 regardless of the specified size. */
818 if (format
== 's' || format
== 'i')
822 val_type
= examine_i_type
;
823 else if (size
== 'b')
824 val_type
= examine_b_type
;
825 else if (size
== 'h')
826 val_type
= examine_h_type
;
827 else if (size
== 'w')
828 val_type
= examine_w_type
;
829 else if (size
== 'g')
830 val_type
= examine_g_type
;
837 if (format
== 's' || format
== 'i')
840 /* Print as many objects as specified in COUNT, at most maxelts per line,
841 with the address of the next one at the start of each line. */
846 print_address (next_address
, gdb_stdout
);
847 printf_filtered (":");
852 printf_filtered ("\t");
853 /* Note that print_formatted sets next_address for the next
855 last_examine_address
= next_address
;
857 if (last_examine_value
)
858 value_free (last_examine_value
);
860 /* The value to be displayed is not fetched greedily.
861 Instead, to avoid the posibility of a fetched value not
862 being used, its retreval is delayed until the print code
863 uses it. When examining an instruction stream, the
864 disassembler will perform its own memory fetch using just
865 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
866 the disassembler be modified so that LAST_EXAMINE_VALUE
867 is left with the byte sequence from the last complete
868 instruction fetched from memory? */
869 last_examine_value
= value_at_lazy (val_type
, next_address
, sect
);
871 if (last_examine_value
)
872 release_value (last_examine_value
);
874 print_formatted (last_examine_value
, format
, size
, gdb_stdout
);
876 printf_filtered ("\n");
877 gdb_flush (gdb_stdout
);
882 validate_format (fmt
, cmdname
)
883 struct format_data fmt
;
887 error ("Size letters are meaningless in \"%s\" command.", cmdname
);
889 error ("Item count other than 1 is meaningless in \"%s\" command.",
891 if (fmt
.format
== 'i' || fmt
.format
== 's')
892 error ("Format letter \"%c\" is meaningless in \"%s\" command.",
893 fmt
.format
, cmdname
);
896 /* Evaluate string EXP as an expression in the current language and
897 print the resulting value. EXP may contain a format specifier as the
898 first argument ("/x myvar" for example, to print myvar in hex).
902 print_command_1 (exp
, inspect
, voidprint
)
907 struct expression
*expr
;
908 register struct cleanup
*old_chain
= 0;
909 register char format
= 0;
910 register value_ptr val
;
911 struct format_data fmt
;
914 /* Pass inspect flag to the rest of the print routines in a global (sigh). */
915 inspect_it
= inspect
;
917 if (exp
&& *exp
== '/')
920 fmt
= decode_format (&exp
, last_format
, 0);
921 validate_format (fmt
, "print");
922 last_format
= format
= fmt
.format
;
934 expr
= parse_expression (exp
);
935 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
,
938 val
= evaluate_expression (expr
);
940 /* C++: figure out what type we actually want to print it as. */
941 type
= VALUE_TYPE (val
);
944 && (TYPE_CODE (type
) == TYPE_CODE_PTR
945 || TYPE_CODE (type
) == TYPE_CODE_REF
)
946 && (TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_STRUCT
947 || TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_UNION
))
951 v
= value_from_vtable_info (val
, TYPE_TARGET_TYPE (type
));
955 type
= VALUE_TYPE (val
);
960 val
= access_value_history (0);
962 if (voidprint
|| (val
&& VALUE_TYPE (val
) &&
963 TYPE_CODE (VALUE_TYPE (val
)) != TYPE_CODE_VOID
))
965 int histindex
= record_latest_value (val
);
968 annotate_value_history_begin (histindex
, VALUE_TYPE (val
));
970 annotate_value_begin (VALUE_TYPE (val
));
973 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp
, histindex
);
974 else if (histindex
>= 0)
975 printf_filtered ("$%d = ", histindex
);
978 annotate_value_history_value ();
980 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
981 printf_filtered ("\n");
984 annotate_value_history_end ();
986 annotate_value_end ();
989 printf_unfiltered ("\") )\030");
993 do_cleanups (old_chain
);
994 inspect_it
= 0; /* Reset print routines to normal */
999 print_command (exp
, from_tty
)
1003 print_command_1 (exp
, 0, 1);
1006 /* Same as print, except in epoch, it gets its own window */
1009 inspect_command (exp
, from_tty
)
1013 extern int epoch_interface
;
1015 print_command_1 (exp
, epoch_interface
, 1);
1018 /* Same as print, except it doesn't print void results. */
1021 call_command (exp
, from_tty
)
1025 print_command_1 (exp
, 0, 0);
1030 output_command (exp
, from_tty
)
1034 struct expression
*expr
;
1035 register struct cleanup
*old_chain
;
1036 register char format
= 0;
1037 register value_ptr val
;
1038 struct format_data fmt
;
1040 if (exp
&& *exp
== '/')
1043 fmt
= decode_format (&exp
, 0, 0);
1044 validate_format (fmt
, "output");
1045 format
= fmt
.format
;
1048 expr
= parse_expression (exp
);
1049 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
, &expr
);
1051 val
= evaluate_expression (expr
);
1053 annotate_value_begin (VALUE_TYPE (val
));
1055 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
1057 annotate_value_end ();
1060 gdb_flush (gdb_stdout
);
1062 do_cleanups (old_chain
);
1067 set_command (exp
, from_tty
)
1071 struct expression
*expr
= parse_expression (exp
);
1072 register struct cleanup
*old_chain
1073 = make_cleanup ((make_cleanup_func
) free_current_contents
, &expr
);
1074 evaluate_expression (expr
);
1075 do_cleanups (old_chain
);
1080 sym_info (arg
, from_tty
)
1084 struct minimal_symbol
*msymbol
;
1085 struct objfile
*objfile
;
1086 struct obj_section
*osect
;
1088 CORE_ADDR addr
, sect_addr
;
1090 unsigned int offset
;
1093 error_no_arg ("address");
1095 addr
= parse_and_eval_address (arg
);
1096 ALL_OBJSECTIONS (objfile
, osect
)
1098 sect
= osect
->the_bfd_section
;
1099 sect_addr
= overlay_mapped_address (addr
, sect
);
1101 if (osect
->addr
<= sect_addr
&& sect_addr
< osect
->endaddr
&&
1102 (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, sect
)))
1105 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1107 printf_filtered ("%s + %u in ",
1108 SYMBOL_SOURCE_NAME (msymbol
), offset
);
1110 printf_filtered ("%s in ",
1111 SYMBOL_SOURCE_NAME (msymbol
));
1112 if (pc_in_unmapped_range (addr
, sect
))
1113 printf_filtered ("load address range of ");
1114 if (section_is_overlay (sect
))
1115 printf_filtered ("%s overlay ",
1116 section_is_mapped (sect
) ? "mapped" : "unmapped");
1117 printf_filtered ("section %s", sect
->name
);
1118 printf_filtered ("\n");
1122 printf_filtered ("No symbol matches %s.\n", arg
);
1127 address_info (exp
, from_tty
)
1131 register struct symbol
*sym
;
1132 register struct minimal_symbol
*msymbol
;
1134 register long basereg
;
1136 CORE_ADDR load_addr
;
1137 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1138 if exp is a field of `this'. */
1141 error ("Argument required.");
1143 sym
= lookup_symbol (exp
, get_selected_block (), VAR_NAMESPACE
,
1144 &is_a_field_of_this
, (struct symtab
**) NULL
);
1147 if (is_a_field_of_this
)
1149 printf_filtered ("Symbol \"");
1150 fprintf_symbol_filtered (gdb_stdout
, exp
,
1151 current_language
->la_language
, DMGL_ANSI
);
1152 printf_filtered ("\" is a field of the local class variable `this'\n");
1156 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1158 if (msymbol
!= NULL
)
1160 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1162 printf_filtered ("Symbol \"");
1163 fprintf_symbol_filtered (gdb_stdout
, exp
,
1164 current_language
->la_language
, DMGL_ANSI
);
1165 printf_filtered ("\" is at ");
1166 print_address_numeric (load_addr
, 1, gdb_stdout
);
1167 printf_filtered (" in a file compiled without debugging");
1168 section
= SYMBOL_BFD_SECTION (msymbol
);
1169 if (section_is_overlay (section
))
1171 load_addr
= overlay_unmapped_address (load_addr
, section
);
1172 printf_filtered (",\n -- loaded at ");
1173 print_address_numeric (load_addr
, 1, gdb_stdout
);
1174 printf_filtered (" in overlay section %s", section
->name
);
1176 printf_filtered (".\n");
1179 error ("No symbol \"%s\" in current context.", exp
);
1183 printf_filtered ("Symbol \"");
1184 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_NAME (sym
),
1185 current_language
->la_language
, DMGL_ANSI
);
1186 printf_filtered ("\" is ");
1187 val
= SYMBOL_VALUE (sym
);
1188 basereg
= SYMBOL_BASEREG (sym
);
1189 section
= SYMBOL_BFD_SECTION (sym
);
1191 switch (SYMBOL_CLASS (sym
))
1194 case LOC_CONST_BYTES
:
1195 printf_filtered ("constant");
1199 printf_filtered ("a label at address ");
1200 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1202 if (section_is_overlay (section
))
1204 load_addr
= overlay_unmapped_address (load_addr
, section
);
1205 printf_filtered (",\n -- loaded at ");
1206 print_address_numeric (load_addr
, 1, gdb_stdout
);
1207 printf_filtered (" in overlay section %s", section
->name
);
1212 printf_filtered ("a variable in register %s", REGISTER_NAME (val
));
1216 printf_filtered ("static storage at address ");
1217 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1219 if (section_is_overlay (section
))
1221 load_addr
= overlay_unmapped_address (load_addr
, section
);
1222 printf_filtered (",\n -- loaded at ");
1223 print_address_numeric (load_addr
, 1, gdb_stdout
);
1224 printf_filtered (" in overlay section %s", section
->name
);
1229 printf_filtered ("external global (indirect addressing), at address *(");
1230 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1232 printf_filtered (")");
1233 if (section_is_overlay (section
))
1235 load_addr
= overlay_unmapped_address (load_addr
, section
);
1236 printf_filtered (",\n -- loaded at ");
1237 print_address_numeric (load_addr
, 1, gdb_stdout
);
1238 printf_filtered (" in overlay section %s", section
->name
);
1243 printf_filtered ("an argument in register %s", REGISTER_NAME (val
));
1246 case LOC_REGPARM_ADDR
:
1247 printf_filtered ("address of an argument in register %s", REGISTER_NAME (val
));
1251 printf_filtered ("an argument at offset %ld", val
);
1255 printf_filtered ("an argument at frame offset %ld", val
);
1259 printf_filtered ("a local variable at frame offset %ld", val
);
1263 printf_filtered ("a reference argument at offset %ld", val
);
1267 printf_filtered ("a variable at offset %ld from register %s",
1268 val
, REGISTER_NAME (basereg
));
1271 case LOC_BASEREG_ARG
:
1272 printf_filtered ("an argument at offset %ld from register %s",
1273 val
, REGISTER_NAME (basereg
));
1277 printf_filtered ("a typedef");
1281 printf_filtered ("a function at address ");
1282 #ifdef GDB_TARGET_MASK_DISAS_PC
1283 print_address_numeric
1284 (load_addr
= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))),
1287 print_address_numeric (load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
1290 if (section_is_overlay (section
))
1292 load_addr
= overlay_unmapped_address (load_addr
, section
);
1293 printf_filtered (",\n -- loaded at ");
1294 print_address_numeric (load_addr
, 1, gdb_stdout
);
1295 printf_filtered (" in overlay section %s", section
->name
);
1299 case LOC_UNRESOLVED
:
1301 struct minimal_symbol
*msym
;
1303 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, NULL
);
1305 printf_filtered ("unresolved");
1308 section
= SYMBOL_BFD_SECTION (msym
);
1309 printf_filtered ("static storage at address ");
1310 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (msym
),
1312 if (section_is_overlay (section
))
1314 load_addr
= overlay_unmapped_address (load_addr
, section
);
1315 printf_filtered (",\n -- loaded at ");
1316 print_address_numeric (load_addr
, 1, gdb_stdout
);
1317 printf_filtered (" in overlay section %s", section
->name
);
1323 case LOC_THREAD_LOCAL_STATIC
:
1325 "a thread-local variable at offset %ld from the thread base register %s",
1326 val
, REGISTER_NAME (basereg
));
1329 case LOC_OPTIMIZED_OUT
:
1330 printf_filtered ("optimized out");
1334 printf_filtered ("of unknown (botched) type");
1337 printf_filtered (".\n");
1341 x_command (exp
, from_tty
)
1345 struct expression
*expr
;
1346 struct format_data fmt
;
1347 struct cleanup
*old_chain
;
1350 fmt
.format
= last_format
;
1351 fmt
.size
= last_size
;
1354 if (exp
&& *exp
== '/')
1357 fmt
= decode_format (&exp
, last_format
, last_size
);
1360 /* If we have an expression, evaluate it and use it as the address. */
1362 if (exp
!= 0 && *exp
!= 0)
1364 expr
= parse_expression (exp
);
1365 /* Cause expression not to be there any more
1366 if this command is repeated with Newline.
1367 But don't clobber a user-defined command's definition. */
1370 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
,
1372 val
= evaluate_expression (expr
);
1373 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_REF
)
1374 val
= value_ind (val
);
1375 /* In rvalue contexts, such as this, functions are coerced into
1376 pointers to functions. This makes "x/i main" work. */
1377 if ( /* last_format == 'i'
1378 && */ TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_FUNC
1379 && VALUE_LVAL (val
) == lval_memory
)
1380 next_address
= VALUE_ADDRESS (val
);
1382 next_address
= value_as_pointer (val
);
1383 if (VALUE_BFD_SECTION (val
))
1384 next_section
= VALUE_BFD_SECTION (val
);
1385 do_cleanups (old_chain
);
1388 do_examine (fmt
, next_address
, next_section
);
1390 /* If the examine succeeds, we remember its size and format for next time. */
1391 last_size
= fmt
.size
;
1392 last_format
= fmt
.format
;
1394 /* Set a couple of internal variables if appropriate. */
1395 if (last_examine_value
)
1397 /* Make last address examined available to the user as $_. Use
1398 the correct pointer type. */
1399 set_internalvar (lookup_internalvar ("_"),
1400 value_from_longest (
1401 lookup_pointer_type (VALUE_TYPE (last_examine_value
)),
1402 (LONGEST
) last_examine_address
));
1404 /* Make contents of last address examined available to the user as $__. */
1405 /* If the last value has not been fetched from memory then don't
1406 fetch it now - instead mark it by voiding the $__ variable. */
1407 if (VALUE_LAZY (last_examine_value
))
1408 set_internalvar (lookup_internalvar ("__"),
1409 allocate_value (builtin_type_void
));
1411 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1416 /* Add an expression to the auto-display chain.
1417 Specify the expression. */
1420 display_command (exp
, from_tty
)
1424 struct format_data fmt
;
1425 register struct expression
*expr
;
1426 register struct display
*new;
1430 if (tui_version
&& *exp
== '$')
1431 display_it
= ((TuiStatus
) tuiDo (
1432 (TuiOpaqueFuncPtr
) tui_vSetLayoutTo
, exp
) == TUI_FAILURE
);
1446 fmt
= decode_format (&exp
, 0, 0);
1447 if (fmt
.size
&& fmt
.format
== 0)
1449 if (fmt
.format
== 'i' || fmt
.format
== 's')
1459 innermost_block
= 0;
1460 expr
= parse_expression (exp
);
1462 new = (struct display
*) xmalloc (sizeof (struct display
));
1465 new->block
= innermost_block
;
1466 new->next
= display_chain
;
1467 new->number
= ++display_number
;
1469 new->status
= enabled
;
1470 display_chain
= new;
1472 if (from_tty
&& target_has_execution
)
1473 do_one_display (new);
1483 free ((PTR
) d
->exp
);
1487 /* Clear out the display_chain.
1488 Done when new symtabs are loaded, since this invalidates
1489 the types stored in many expressions. */
1494 register struct display
*d
;
1496 while ((d
= display_chain
) != NULL
)
1498 free ((PTR
) d
->exp
);
1499 display_chain
= d
->next
;
1504 /* Delete the auto-display number NUM. */
1507 delete_display (num
)
1510 register struct display
*d1
, *d
;
1513 error ("No display number %d.", num
);
1515 if (display_chain
->number
== num
)
1518 display_chain
= d1
->next
;
1522 for (d
= display_chain
;; d
= d
->next
)
1525 error ("No display number %d.", num
);
1526 if (d
->next
->number
== num
)
1536 /* Delete some values from the auto-display chain.
1537 Specify the element numbers. */
1540 undisplay_command (args
, from_tty
)
1544 register char *p
= args
;
1550 if (query ("Delete all auto-display expressions? "))
1559 while (*p1
>= '0' && *p1
<= '9')
1561 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1562 error ("Arguments must be display numbers.");
1566 delete_display (num
);
1569 while (*p
== ' ' || *p
== '\t')
1575 /* Display a single auto-display.
1576 Do nothing if the display cannot be printed in the current context,
1577 or if the display is disabled. */
1583 int within_current_scope
;
1585 if (d
->status
== disabled
)
1589 within_current_scope
= contained_in (get_selected_block (), d
->block
);
1591 within_current_scope
= 1;
1592 if (!within_current_scope
)
1595 current_display_number
= d
->number
;
1597 annotate_display_begin ();
1598 printf_filtered ("%d", d
->number
);
1599 annotate_display_number_end ();
1600 printf_filtered (": ");
1606 annotate_display_format ();
1608 printf_filtered ("x/");
1609 if (d
->format
.count
!= 1)
1610 printf_filtered ("%d", d
->format
.count
);
1611 printf_filtered ("%c", d
->format
.format
);
1612 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1613 printf_filtered ("%c", d
->format
.size
);
1614 printf_filtered (" ");
1616 annotate_display_expression ();
1618 print_expression (d
->exp
, gdb_stdout
);
1619 annotate_display_expression_end ();
1621 if (d
->format
.count
!= 1)
1622 printf_filtered ("\n");
1624 printf_filtered (" ");
1626 val
= evaluate_expression (d
->exp
);
1627 addr
= value_as_pointer (val
);
1628 if (d
->format
.format
== 'i')
1629 addr
= ADDR_BITS_REMOVE (addr
);
1631 annotate_display_value ();
1633 do_examine (d
->format
, addr
, VALUE_BFD_SECTION (val
));
1637 annotate_display_format ();
1639 if (d
->format
.format
)
1640 printf_filtered ("/%c ", d
->format
.format
);
1642 annotate_display_expression ();
1644 print_expression (d
->exp
, gdb_stdout
);
1645 annotate_display_expression_end ();
1647 printf_filtered (" = ");
1649 annotate_display_expression ();
1651 print_formatted (evaluate_expression (d
->exp
),
1652 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1653 printf_filtered ("\n");
1656 annotate_display_end ();
1658 gdb_flush (gdb_stdout
);
1659 current_display_number
= -1;
1662 /* Display all of the values on the auto-display chain which can be
1663 evaluated in the current scope. */
1668 register struct display
*d
;
1670 for (d
= display_chain
; d
; d
= d
->next
)
1674 /* Delete the auto-display which we were in the process of displaying.
1675 This is done when there is an error or a signal. */
1678 disable_display (num
)
1681 register struct display
*d
;
1683 for (d
= display_chain
; d
; d
= d
->next
)
1684 if (d
->number
== num
)
1686 d
->status
= disabled
;
1689 printf_unfiltered ("No display number %d.\n", num
);
1693 disable_current_display ()
1695 if (current_display_number
>= 0)
1697 disable_display (current_display_number
);
1698 fprintf_unfiltered (gdb_stderr
, "Disabling display %d to avoid infinite recursion.\n",
1699 current_display_number
);
1701 current_display_number
= -1;
1705 display_info (ignore
, from_tty
)
1709 register struct display
*d
;
1712 printf_unfiltered ("There are no auto-display expressions now.\n");
1714 printf_filtered ("Auto-display expressions now in effect:\n\
1715 Num Enb Expression\n");
1717 for (d
= display_chain
; d
; d
= d
->next
)
1719 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->status
]);
1721 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1723 else if (d
->format
.format
)
1724 printf_filtered ("/%c ", d
->format
.format
);
1725 print_expression (d
->exp
, gdb_stdout
);
1726 if (d
->block
&& !contained_in (get_selected_block (), d
->block
))
1727 printf_filtered (" (cannot be evaluated in the current context)");
1728 printf_filtered ("\n");
1729 gdb_flush (gdb_stdout
);
1734 enable_display (args
, from_tty
)
1738 register char *p
= args
;
1741 register struct display
*d
;
1745 for (d
= display_chain
; d
; d
= d
->next
)
1746 d
->status
= enabled
;
1752 while (*p1
>= '0' && *p1
<= '9')
1754 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1755 error ("Arguments must be display numbers.");
1759 for (d
= display_chain
; d
; d
= d
->next
)
1760 if (d
->number
== num
)
1762 d
->status
= enabled
;
1765 printf_unfiltered ("No display number %d.\n", num
);
1768 while (*p
== ' ' || *p
== '\t')
1775 disable_display_command (args
, from_tty
)
1779 register char *p
= args
;
1781 register struct display
*d
;
1785 for (d
= display_chain
; d
; d
= d
->next
)
1786 d
->status
= disabled
;
1792 while (*p1
>= '0' && *p1
<= '9')
1794 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1795 error ("Arguments must be display numbers.");
1797 disable_display (atoi (p
));
1800 while (*p
== ' ' || *p
== '\t')
1806 /* Print the value in stack frame FRAME of a variable
1807 specified by a struct symbol. */
1810 print_variable_value (var
, frame
, stream
)
1812 struct frame_info
*frame
;
1813 struct ui_file
*stream
;
1815 value_ptr val
= read_var_value (var
, frame
);
1817 value_print (val
, stream
, 0, Val_pretty_default
);
1820 /* Print the arguments of a stack frame, given the function FUNC
1821 running in that frame (as a symbol), the info on the frame,
1822 and the number of args according to the stack frame (or -1 if unknown). */
1824 /* References here and elsewhere to "number of args according to the
1825 stack frame" appear in all cases to refer to "number of ints of args
1826 according to the stack frame". At least for VAX, i386, isi. */
1829 print_frame_args (func
, fi
, num
, stream
)
1830 struct symbol
*func
;
1831 struct frame_info
*fi
;
1833 struct ui_file
*stream
;
1835 struct block
*b
= NULL
;
1839 register struct symbol
*sym
;
1840 register value_ptr val
;
1841 /* Offset of next stack argument beyond the one we have seen that is
1842 at the highest offset.
1843 -1 if we haven't come to a stack argument yet. */
1844 long highest_offset
= -1;
1846 /* Number of ints of arguments that we have printed so far. */
1847 int args_printed
= 0;
1849 struct cleanup
*old_chain
;
1850 struct ui_stream
*stb
;
1852 stb
= ui_out_stream_new (uiout
);
1853 old_chain
= make_cleanup ((make_cleanup_func
) ui_out_stream_delete
, stb
);
1858 b
= SYMBOL_BLOCK_VALUE (func
);
1859 nsyms
= BLOCK_NSYMS (b
);
1862 for (i
= 0; i
< nsyms
; i
++)
1865 sym
= BLOCK_SYM (b
, i
);
1867 /* Keep track of the highest stack argument offset seen, and
1868 skip over any kinds of symbols we don't care about. */
1870 switch (SYMBOL_CLASS (sym
))
1875 long current_offset
= SYMBOL_VALUE (sym
);
1876 arg_size
= TYPE_LENGTH (SYMBOL_TYPE (sym
));
1878 /* Compute address of next argument by adding the size of
1879 this argument and rounding to an int boundary. */
1881 = ((current_offset
+ arg_size
+ sizeof (int) - 1)
1882 & ~(sizeof (int) - 1));
1884 /* If this is the highest offset seen yet, set highest_offset. */
1885 if (highest_offset
== -1
1886 || (current_offset
> highest_offset
))
1887 highest_offset
= current_offset
;
1889 /* Add the number of ints we're about to print to args_printed. */
1890 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
1893 /* We care about types of symbols, but don't need to keep track of
1894 stack offsets in them. */
1896 case LOC_REGPARM_ADDR
:
1898 case LOC_BASEREG_ARG
:
1901 /* Other types of symbols we just skip over. */
1906 /* We have to look up the symbol because arguments can have
1907 two entries (one a parameter, one a local) and the one we
1908 want is the local, which lookup_symbol will find for us.
1909 This includes gcc1 (not gcc2) on the sparc when passing a
1910 small structure and gcc2 when the argument type is float
1911 and it is passed as a double and converted to float by
1912 the prologue (in the latter case the type of the LOC_ARG
1913 symbol is double and the type of the LOC_LOCAL symbol is
1915 /* But if the parameter name is null, don't try it.
1916 Null parameter names occur on the RS/6000, for traceback tables.
1917 FIXME, should we even print them? */
1919 if (*SYMBOL_NAME (sym
))
1921 struct symbol
*nsym
;
1922 nsym
= lookup_symbol
1924 b
, VAR_NAMESPACE
, (int *) NULL
, (struct symtab
**) NULL
);
1925 if (SYMBOL_CLASS (nsym
) == LOC_REGISTER
)
1927 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1928 it was passed on the stack and loaded into a register,
1929 or passed in a register and stored in a stack slot.
1930 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1932 Reasons for using the LOC_ARG:
1933 (1) because find_saved_registers may be slow for remote
1935 (2) because registers are often re-used and stack slots
1936 rarely (never?) are. Therefore using the stack slot is
1937 much less likely to print garbage.
1939 Reasons why we might want to use the LOC_REGISTER:
1940 (1) So that the backtrace prints the same value as
1941 "print foo". I see no compelling reason why this needs
1942 to be the case; having the backtrace print the value which
1943 was passed in, and "print foo" print the value as modified
1944 within the called function, makes perfect sense to me.
1946 Additional note: It might be nice if "info args" displayed
1948 One more note: There is a case with sparc structure passing
1949 where we need to use the LOC_REGISTER, but this is dealt with
1950 by creating a single LOC_REGPARM in symbol reading. */
1952 /* Leave sym (the LOC_ARG) alone. */
1960 /* Print the current arg. */
1962 ui_out_text (uiout
, ", ");
1963 ui_out_wrap_hint (uiout
, " ");
1965 annotate_arg_begin ();
1967 ui_out_list_begin (uiout
, NULL
);
1968 fprintf_symbol_filtered (stb
->stream
, SYMBOL_SOURCE_NAME (sym
),
1969 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1970 ui_out_field_stream (uiout
, "name", stb
);
1971 annotate_arg_name_end ();
1972 ui_out_text (uiout
, "=");
1974 /* Print the current arg. */
1976 fprintf_filtered (stream
, ", ");
1979 annotate_arg_begin ();
1981 fprintf_symbol_filtered (stream
, SYMBOL_SOURCE_NAME (sym
),
1982 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1983 annotate_arg_name_end ();
1984 fputs_filtered ("=", stream
);
1987 /* Avoid value_print because it will deref ref parameters. We just
1988 want to print their addresses. Print ??? for args whose address
1989 we do not know. We pass 2 as "recurse" to val_print because our
1990 standard indentation here is 4 spaces, and val_print indents
1991 2 for each recurse. */
1992 val
= read_var_value (sym
, fi
);
1994 annotate_arg_value (val
== NULL
? NULL
: VALUE_TYPE (val
));
1998 if (GDB_TARGET_IS_D10V
1999 && SYMBOL_CLASS (sym
) == LOC_REGPARM
&& TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_PTR
)
2000 TYPE_LENGTH (VALUE_TYPE (val
)) = 2;
2002 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
2003 VALUE_ADDRESS (val
),
2004 stb
->stream
, 0, 0, 2, Val_no_prettyprint
);
2005 ui_out_field_stream (uiout
, "value", stb
);
2008 ui_out_text (uiout
, "???");
2010 ui_out_list_end (uiout
);
2012 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
2013 VALUE_ADDRESS (val
),
2014 stream
, 0, 0, 2, Val_no_prettyprint
);
2017 fputs_filtered ("???", stream
);
2020 annotate_arg_end ();
2025 /* Don't print nameless args in situations where we don't know
2026 enough about the stack to find them. */
2031 if (highest_offset
== -1)
2032 start
= FRAME_ARGS_SKIP
;
2034 start
= highest_offset
;
2036 print_frame_nameless_args (fi
, start
, num
- args_printed
,
2040 do_cleanups (old_chain
);
2041 #endif /* no UI_OUT */
2044 /* Print nameless args on STREAM.
2045 FI is the frameinfo for this frame, START is the offset
2046 of the first nameless arg, and NUM is the number of nameless args to
2047 print. FIRST is nonzero if this is the first argument (not just
2048 the first nameless arg). */
2051 print_frame_nameless_args (fi
, start
, num
, first
, stream
)
2052 struct frame_info
*fi
;
2056 struct ui_file
*stream
;
2062 for (i
= 0; i
< num
; i
++)
2065 #ifdef NAMELESS_ARG_VALUE
2066 NAMELESS_ARG_VALUE (fi
, start
, &arg_value
);
2068 argsaddr
= FRAME_ARGS_ADDRESS (fi
);
2072 arg_value
= read_memory_integer (argsaddr
+ start
, sizeof (int));
2076 fprintf_filtered (stream
, ", ");
2078 #ifdef PRINT_NAMELESS_INTEGER
2079 PRINT_NAMELESS_INTEGER (stream
, arg_value
);
2081 #ifdef PRINT_TYPELESS_INTEGER
2082 PRINT_TYPELESS_INTEGER (stream
, builtin_type_int
, (LONGEST
) arg_value
);
2084 fprintf_filtered (stream
, "%ld", arg_value
);
2085 #endif /* PRINT_TYPELESS_INTEGER */
2086 #endif /* PRINT_NAMELESS_INTEGER */
2088 start
+= sizeof (int);
2094 printf_command (arg
, from_tty
)
2098 register char *f
= NULL
;
2099 register char *s
= arg
;
2100 char *string
= NULL
;
2101 value_ptr
*val_args
;
2103 char *current_substring
;
2105 int allocated_args
= 20;
2106 struct cleanup
*old_cleanups
;
2108 val_args
= (value_ptr
*) xmalloc (allocated_args
* sizeof (value_ptr
));
2109 old_cleanups
= make_cleanup ((make_cleanup_func
) free_current_contents
,
2113 error_no_arg ("format-control string and values to print");
2115 /* Skip white space before format string */
2116 while (*s
== ' ' || *s
== '\t')
2119 /* A format string should follow, enveloped in double quotes */
2121 error ("Bad format string, missing '\"'.");
2123 /* Parse the format-control string and copy it into the string STRING,
2124 processing some kinds of escape sequence. */
2126 f
= string
= (char *) alloca (strlen (s
) + 1);
2134 error ("Bad format string, non-terminated '\"'.");
2146 *f
++ = '\007'; /* Bell */
2171 /* ??? TODO: handle other escape sequences */
2172 error ("Unrecognized escape character \\%c in format string.",
2182 /* Skip over " and following space and comma. */
2185 while (*s
== ' ' || *s
== '\t')
2188 if (*s
!= ',' && *s
!= 0)
2189 error ("Invalid argument syntax");
2193 while (*s
== ' ' || *s
== '\t')
2196 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2197 substrings
= alloca (strlen (string
) * 2);
2198 current_substring
= substrings
;
2201 /* Now scan the string for %-specs and see what kinds of args they want.
2202 argclass[I] classifies the %-specs so we can give printf_filtered
2203 something of the right size. */
2207 no_arg
, int_arg
, string_arg
, double_arg
, long_long_arg
2209 enum argclass
*argclass
;
2210 enum argclass this_argclass
;
2216 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
2224 while (strchr ("0123456789.hlL-+ #", *f
))
2226 if (*f
== 'l' || *f
== 'L')
2233 this_argclass
= string_arg
;
2239 this_argclass
= double_arg
;
2243 error ("`*' not supported for precision or width in printf");
2246 error ("Format specifier `n' not supported in printf");
2249 this_argclass
= no_arg
;
2254 this_argclass
= long_long_arg
;
2256 this_argclass
= int_arg
;
2260 if (this_argclass
!= no_arg
)
2262 strncpy (current_substring
, last_arg
, f
- last_arg
);
2263 current_substring
+= f
- last_arg
;
2264 *current_substring
++ = '\0';
2266 argclass
[nargs_wanted
++] = this_argclass
;
2270 /* Now, parse all arguments and evaluate them.
2271 Store the VALUEs in VAL_ARGS. */
2276 if (nargs
== allocated_args
)
2277 val_args
= (value_ptr
*) xrealloc ((char *) val_args
,
2278 (allocated_args
*= 2)
2279 * sizeof (value_ptr
));
2281 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2283 /* If format string wants a float, unchecked-convert the value to
2284 floating point of the same size */
2286 if (argclass
[nargs
] == double_arg
)
2288 struct type
*type
= VALUE_TYPE (val_args
[nargs
]);
2289 if (TYPE_LENGTH (type
) == sizeof (float))
2290 VALUE_TYPE (val_args
[nargs
]) = builtin_type_float
;
2291 if (TYPE_LENGTH (type
) == sizeof (double))
2292 VALUE_TYPE (val_args
[nargs
]) = builtin_type_double
;
2300 if (nargs
!= nargs_wanted
)
2301 error ("Wrong number of arguments for specified format-string");
2303 /* Now actually print them. */
2304 current_substring
= substrings
;
2305 for (i
= 0; i
< nargs
; i
++)
2307 switch (argclass
[i
])
2314 tem
= value_as_pointer (val_args
[i
]);
2316 /* This is a %s argument. Find the length of the string. */
2321 read_memory_section (tem
+ j
, &c
, 1,
2322 VALUE_BFD_SECTION (val_args
[i
]));
2327 /* Copy the string contents into a string inside GDB. */
2328 str
= (char *) alloca (j
+ 1);
2329 read_memory_section (tem
, str
, j
, VALUE_BFD_SECTION (val_args
[i
]));
2332 printf_filtered (current_substring
, str
);
2337 double val
= value_as_double (val_args
[i
]);
2338 printf_filtered (current_substring
, val
);
2342 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2344 long long val
= value_as_long (val_args
[i
]);
2345 printf_filtered (current_substring
, val
);
2349 error ("long long not supported in printf");
2353 /* FIXME: there should be separate int_arg and long_arg. */
2354 long val
= value_as_long (val_args
[i
]);
2355 printf_filtered (current_substring
, val
);
2358 default: /* purecov: deadcode */
2359 error ("internal error in printf_command"); /* purecov: deadcode */
2361 /* Skip to the next substring. */
2362 current_substring
+= strlen (current_substring
) + 1;
2364 /* Print the portion of the format string after the last argument. */
2365 printf_filtered (last_arg
);
2367 do_cleanups (old_cleanups
);
2370 /* Dump a specified section of assembly code. With no command line
2371 arguments, this command will dump the assembly code for the
2372 function surrounding the pc value in the selected frame. With one
2373 argument, it will dump the assembly code surrounding that pc value.
2374 Two arguments are interpeted as bounds within which to dump
2379 disassemble_command (arg
, from_tty
)
2383 CORE_ADDR low
, high
;
2385 CORE_ADDR pc
, pc_masked
;
2394 if (!selected_frame
)
2395 error ("No frame selected.\n");
2397 pc
= get_frame_pc (selected_frame
);
2398 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2399 error ("No function contains program counter for selected frame.\n");
2401 else if (tui_version
)
2402 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2406 low
+= FUNCTION_START_OFFSET
;
2408 else if (!(space_index
= (char *) strchr (arg
, ' ')))
2411 pc
= parse_and_eval_address (arg
);
2412 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2413 error ("No function contains specified address.\n");
2415 else if (tui_version
)
2416 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2421 if (overlay_debugging
)
2423 section
= find_pc_overlay (pc
);
2424 if (pc_in_unmapped_range (pc
, section
))
2426 /* find_pc_partial_function will have returned low and high
2427 relative to the symbolic (mapped) address range. Need to
2428 translate them back to the unmapped range where PC is. */
2429 low
= overlay_unmapped_address (low
, section
);
2430 high
= overlay_unmapped_address (high
, section
);
2434 low
+= FUNCTION_START_OFFSET
;
2438 /* Two arguments. */
2439 *space_index
= '\0';
2440 low
= parse_and_eval_address (arg
);
2441 high
= parse_and_eval_address (space_index
+ 1);
2446 m_winPtrIsNull (disassemWin
) || !disassemWin
->generic
.isVisible
)
2449 printf_filtered ("Dump of assembler code ");
2452 printf_filtered ("for function %s:\n", name
);
2456 printf_filtered ("from ");
2457 print_address_numeric (low
, 1, gdb_stdout
);
2458 printf_filtered (" to ");
2459 print_address_numeric (high
, 1, gdb_stdout
);
2460 printf_filtered (":\n");
2463 /* Dump the specified range. */
2466 #ifdef GDB_TARGET_MASK_DISAS_PC
2467 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2472 while (pc_masked
< high
)
2475 print_address (pc_masked
, gdb_stdout
);
2476 printf_filtered (":\t");
2477 /* We often wrap here if there are long symbolic names. */
2479 pc
+= print_insn (pc
, gdb_stdout
);
2480 printf_filtered ("\n");
2482 #ifdef GDB_TARGET_MASK_DISAS_PC
2483 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2488 printf_filtered ("End of assembler dump.\n");
2489 gdb_flush (gdb_stdout
);
2494 tuiDo ((TuiOpaqueFuncPtr
) tui_vAddWinToLayout
, DISASSEM_WIN
);
2495 tuiDo ((TuiOpaqueFuncPtr
) tui_vUpdateSourceWindowsWithAddr
, low
);
2500 /* Print the instruction at address MEMADDR in debugged memory,
2501 on STREAM. Returns length of the instruction, in bytes. */
2504 print_insn (memaddr
, stream
)
2506 struct ui_file
*stream
;
2508 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2509 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_BIG
;
2511 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_LITTLE
;
2513 if (TARGET_ARCHITECTURE
!= NULL
)
2514 TARGET_PRINT_INSN_INFO
->mach
= TARGET_ARCHITECTURE
->mach
;
2515 /* else: should set .mach=0 but some disassemblers don't grok this */
2517 return TARGET_PRINT_INSN (memaddr
, TARGET_PRINT_INSN_INFO
);
2522 _initialize_printcmd ()
2524 current_display_number
= -1;
2526 add_info ("address", address_info
,
2527 "Describe where symbol SYM is stored.");
2529 add_info ("symbol", sym_info
,
2530 "Describe what symbol is at location ADDR.\n\
2531 Only for symbols with fixed locations (global or static scope).");
2533 add_com ("x", class_vars
, x_command
,
2534 concat ("Examine memory: x/FMT ADDRESS.\n\
2535 ADDRESS is an expression for the memory address to examine.\n\
2536 FMT is a repeat count followed by a format letter and a size letter.\n\
2537 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2538 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
2539 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2540 The specified number of objects of the specified size are printed\n\
2541 according to the format.\n\n\
2542 Defaults for format and size letters are those previously used.\n\
2543 Default count is 1. Default address is following last thing printed\n\
2544 with this command or \"print\".", NULL
));
2546 add_com ("disassemble", class_vars
, disassemble_command
,
2547 "Disassemble a specified section of memory.\n\
2548 Default is the function surrounding the pc of the selected frame.\n\
2549 With a single argument, the function surrounding that address is dumped.\n\
2550 Two arguments are taken as a range of memory to dump.");
2552 add_com_alias ("va", "disassemble", class_xdb
, 0);
2555 add_com ("whereis", class_vars
, whereis_command
,
2556 "Print line number and file of definition of variable.");
2559 add_info ("display", display_info
,
2560 "Expressions to display when program stops, with code numbers.");
2562 add_cmd ("undisplay", class_vars
, undisplay_command
,
2563 "Cancel some expressions to be displayed when program stops.\n\
2564 Arguments are the code numbers of the expressions to stop displaying.\n\
2565 No argument means cancel all automatic-display expressions.\n\
2566 \"delete display\" has the same effect as this command.\n\
2567 Do \"info display\" to see current list of code numbers.",
2570 add_com ("display", class_vars
, display_command
,
2571 "Print value of expression EXP each time the program stops.\n\
2572 /FMT may be used before EXP as in the \"print\" command.\n\
2573 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2574 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2575 and examining is done as in the \"x\" command.\n\n\
2576 With no argument, display all currently requested auto-display expressions.\n\
2577 Use \"undisplay\" to cancel display requests previously made."
2580 add_cmd ("display", class_vars
, enable_display
,
2581 "Enable some expressions to be displayed when program stops.\n\
2582 Arguments are the code numbers of the expressions to resume displaying.\n\
2583 No argument means enable all automatic-display expressions.\n\
2584 Do \"info display\" to see current list of code numbers.", &enablelist
);
2586 add_cmd ("display", class_vars
, disable_display_command
,
2587 "Disable some expressions to be displayed when program stops.\n\
2588 Arguments are the code numbers of the expressions to stop displaying.\n\
2589 No argument means disable all automatic-display expressions.\n\
2590 Do \"info display\" to see current list of code numbers.", &disablelist
);
2592 add_cmd ("display", class_vars
, undisplay_command
,
2593 "Cancel some expressions to be displayed when program stops.\n\
2594 Arguments are the code numbers of the expressions to stop displaying.\n\
2595 No argument means cancel all automatic-display expressions.\n\
2596 Do \"info display\" to see current list of code numbers.", &deletelist
);
2598 add_com ("printf", class_vars
, printf_command
,
2599 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2600 This is useful for formatted output in user-defined commands.");
2602 add_com ("output", class_vars
, output_command
,
2603 "Like \"print\" but don't put in value history and don't print newline.\n\
2604 This is useful in user-defined commands.");
2606 add_prefix_cmd ("set", class_vars
, set_command
,
2607 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2608 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2609 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2610 with $), a register (a few standard names starting with $), or an actual\n\
2611 variable in the program being debugged. EXP is any valid expression.\n",
2612 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2613 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2614 You can see these environment settings with the \"show\" command.", NULL
),
2615 &setlist
, "set ", 1, &cmdlist
);
2617 add_com ("assign", class_vars
, set_command
, concat ("Evaluate expression \
2618 EXP and assign result to variable VAR, using assignment\n\
2619 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2620 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2621 with $), a register (a few standard names starting with $), or an actual\n\
2622 variable in the program being debugged. EXP is any valid expression.\n",
2623 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2624 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2625 You can see these environment settings with the \"show\" command.", NULL
));
2627 /* "call" is the same as "set", but handy for dbx users to call fns. */
2628 add_com ("call", class_vars
, call_command
,
2629 "Call a function in the program.\n\
2630 The argument is the function name and arguments, in the notation of the\n\
2631 current working language. The result is printed and saved in the value\n\
2632 history, if it is not void.");
2634 add_cmd ("variable", class_vars
, set_command
,
2635 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2636 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2637 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2638 with $), a register (a few standard names starting with $), or an actual\n\
2639 variable in the program being debugged. EXP is any valid expression.\n\
2640 This may usually be abbreviated to simply \"set\".",
2643 add_com ("print", class_vars
, print_command
,
2644 concat ("Print value of expression EXP.\n\
2645 Variables accessible are those of the lexical environment of the selected\n\
2646 stack frame, plus all those whose scope is global or an entire file.\n\
2648 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2649 $$NUM refers to NUM'th value back from the last one.\n\
2650 Names starting with $ refer to registers (with the values they would have\n",
2651 "if the program were to return to the stack frame now selected, restoring\n\
2652 all registers saved by frames farther in) or else to debugger\n\
2653 \"convenience\" variables (any such name not a known register).\n\
2654 Use assignment expressions to give values to convenience variables.\n",
2656 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2657 @ is a binary operator for treating consecutive data objects\n\
2658 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2659 element is FOO, whose second element is stored in the space following\n\
2660 where FOO is stored, etc. FOO must be an expression whose value\n\
2661 resides in memory.\n",
2663 EXP may be preceded with /FMT, where FMT is a format letter\n\
2664 but no count or size letter (see \"x\" command).", NULL
));
2665 add_com_alias ("p", "print", class_vars
, 1);
2667 add_com ("inspect", class_vars
, inspect_command
,
2668 "Same as \"print\" command, except that if you are running in the epoch\n\
2669 environment, the value is printed in its own window.");
2672 add_set_cmd ("max-symbolic-offset", no_class
, var_uinteger
,
2673 (char *) &max_symbolic_offset
,
2674 "Set the largest offset that will be printed in <symbol+1234> form.",
2678 add_set_cmd ("symbol-filename", no_class
, var_boolean
,
2679 (char *) &print_symbol_filename
,
2680 "Set printing of source filename and line number with <symbol>.",
2684 /* For examine/instruction a single byte quantity is specified as
2685 the data. This avoids problems with value_at_lazy() requiring a
2686 valid data type (and rejecting VOID). */
2687 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2689 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2690 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2691 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2692 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);