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 (char *, int);
126 void _initialize_printcmd (void);
128 /* Prototypes for local functions. */
130 static void delete_display (int);
132 static void enable_display (char *, int);
134 static void disable_display_command (char *, int);
136 static void disassemble_command (char *, int);
138 static void printf_command (char *, int);
140 static void print_frame_nameless_args (struct frame_info
*, long,
141 int, int, struct ui_file
*);
143 static void display_info (char *, int);
145 static void do_one_display (struct display
*);
147 static void undisplay_command (char *, int);
149 static void free_display (struct display
*);
151 static void display_command (char *, int);
153 void x_command (char *, int);
155 static void address_info (char *, int);
157 static void set_command (char *, int);
159 static void call_command (char *, int);
161 static void inspect_command (char *, int);
163 static void print_command (char *, int);
165 static void print_command_1 (char *, int, int);
167 static void validate_format (struct format_data
, char *);
169 static void do_examine (struct format_data
, CORE_ADDR addr
,
172 static void print_formatted (value_ptr
, int, int, struct ui_file
*);
174 static struct format_data
decode_format (char **, int, int);
176 static int print_insn (CORE_ADDR
, struct ui_file
*);
178 static void sym_info (char *, int);
181 /* Decode a format specification. *STRING_PTR should point to it.
182 OFORMAT and OSIZE are used as defaults for the format and size
183 if none are given in the format specification.
184 If OSIZE is zero, then the size field of the returned value
185 should be set only if a size is explicitly specified by the
187 The structure returned describes all the data
188 found in the specification. In addition, *STRING_PTR is advanced
189 past the specification and past all whitespace following it. */
191 static struct format_data
192 decode_format (string_ptr
, oformat
, osize
)
197 struct format_data val
;
198 register char *p
= *string_ptr
;
204 if (*p
>= '0' && *p
<= '9')
205 val
.count
= atoi (p
);
206 while (*p
>= '0' && *p
<= '9')
209 /* Now process size or format letters that follow. */
213 if (*p
== 'b' || *p
== 'h' || *p
== 'w' || *p
== 'g')
215 else if (*p
>= 'a' && *p
<= 'z')
221 while (*p
== ' ' || *p
== '\t')
225 /* Set defaults for format and size if not specified. */
226 if (val
.format
== '?')
230 /* Neither has been specified. */
231 val
.format
= oformat
;
235 /* If a size is specified, any format makes a reasonable
236 default except 'i'. */
237 val
.format
= oformat
== 'i' ? 'x' : oformat
;
239 else if (val
.size
== '?')
244 /* Pick the appropriate size for an address. */
245 if (TARGET_PTR_BIT
== 64)
246 val
.size
= osize
? 'g' : osize
;
247 else if (TARGET_PTR_BIT
== 32)
248 val
.size
= osize
? 'w' : osize
;
249 else if (TARGET_PTR_BIT
== 16)
250 val
.size
= osize
? 'h' : osize
;
252 /* Bad value for TARGET_PTR_BIT */
256 /* Floating point has to be word or giantword. */
257 if (osize
== 'w' || osize
== 'g')
260 /* Default it to giantword if the last used size is not
262 val
.size
= osize
? 'g' : osize
;
265 /* Characters default to one byte. */
266 val
.size
= osize
? 'b' : osize
;
269 /* The default is the size most recently specified. */
276 /* Print value VAL on stream according to FORMAT, a letter or 0.
277 Do not end with a newline.
278 0 means print VAL according to its own type.
279 SIZE is the letter for the size of datum being printed.
280 This is used to pad hex numbers so they line up. */
283 print_formatted (val
, format
, size
, stream
)
284 register value_ptr val
;
287 struct ui_file
*stream
;
289 struct type
*type
= check_typedef (VALUE_TYPE (val
));
290 int len
= TYPE_LENGTH (type
);
292 if (VALUE_LVAL (val
) == lval_memory
)
294 next_address
= VALUE_ADDRESS (val
) + len
;
295 next_section
= VALUE_BFD_SECTION (val
);
301 /* FIXME: Need to handle wchar_t's here... */
302 next_address
= VALUE_ADDRESS (val
)
303 + val_print_string (VALUE_ADDRESS (val
), -1, 1, stream
);
304 next_section
= VALUE_BFD_SECTION (val
);
308 /* The old comment says
309 "Force output out, print_insn not using _filtered".
310 I'm not completely sure what that means, I suspect most print_insn
311 now do use _filtered, so I guess it's obsolete.
312 --Yes, it does filter now, and so this is obsolete. -JB */
314 /* We often wrap here if there are long symbolic names. */
316 next_address
= VALUE_ADDRESS (val
)
317 + print_insn (VALUE_ADDRESS (val
), stream
);
318 next_section
= VALUE_BFD_SECTION (val
);
323 || TYPE_CODE (type
) == TYPE_CODE_ARRAY
324 || TYPE_CODE (type
) == TYPE_CODE_STRING
325 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
326 || TYPE_CODE (type
) == TYPE_CODE_UNION
)
327 /* If format is 0, use the 'natural' format for
328 * that type of value. If the type is non-scalar,
329 * we have to use language rules to print it as
330 * a series of scalars.
332 value_print (val
, stream
, format
, Val_pretty_default
);
334 /* User specified format, so don't look to the
335 * the type to tell us what to do.
337 print_scalar_formatted (VALUE_CONTENTS (val
), type
,
338 format
, size
, stream
);
342 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
343 according to letters FORMAT and SIZE on STREAM.
344 FORMAT may not be zero. Formats s and i are not supported at this level.
346 This is how the elements of an array or structure are printed
350 print_scalar_formatted (valaddr
, type
, format
, size
, stream
)
355 struct ui_file
*stream
;
358 unsigned int len
= TYPE_LENGTH (type
);
360 if (len
> sizeof (LONGEST
)
368 if (!TYPE_UNSIGNED (type
)
369 || !extract_long_unsigned_integer (valaddr
, len
, &val_long
))
371 /* We can't print it normally, but we can print it in hex.
372 Printing it in the wrong radix is more useful than saying
373 "use /x, you dummy". */
374 /* FIXME: we could also do octal or binary if that was the
376 /* FIXME: we should be using the size field to give us a
377 minimum field width to print. */
380 print_octal_chars (stream
, valaddr
, len
);
381 else if (format
== 'd')
382 print_decimal_chars (stream
, valaddr
, len
);
383 else if (format
== 't')
384 print_binary_chars (stream
, valaddr
, len
);
386 /* replace with call to print_hex_chars? Looks
387 like val_print_type_code_int is redoing
390 val_print_type_code_int (type
, valaddr
, stream
);
395 /* If we get here, extract_long_unsigned_integer set val_long. */
397 else if (format
!= 'f')
398 val_long
= unpack_long (type
, valaddr
);
400 /* If we are printing it as unsigned, truncate it in case it is actually
401 a negative signed value (e.g. "print/u (short)-1" should print 65535
402 (if shorts are 16 bits) instead of 4294967295). */
405 if (len
< sizeof (LONGEST
))
406 val_long
&= ((LONGEST
) 1 << HOST_CHAR_BIT
* len
) - 1;
414 /* no size specified, like in print. Print varying # of digits. */
415 print_longest (stream
, 'x', 1, val_long
);
424 print_longest (stream
, size
, 1, val_long
);
427 error ("Undefined output size \"%c\".", size
);
432 print_longest (stream
, 'd', 1, val_long
);
436 print_longest (stream
, 'u', 0, val_long
);
441 print_longest (stream
, 'o', 1, val_long
);
443 fprintf_filtered (stream
, "0");
448 /* Truncate address to the size of a target pointer, avoiding
449 shifts larger or equal than the width of a CORE_ADDR. The
450 local variable PTR_BIT stops the compiler reporting a shift
451 overflow when it won't occure. */
452 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
453 int ptr_bit
= TARGET_PTR_BIT
;
454 if (ptr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
455 addr
&= ((CORE_ADDR
) 1 << ptr_bit
) - 1;
456 print_address (addr
, stream
);
461 value_print (value_from_longest (builtin_type_true_char
, val_long
),
462 stream
, 0, Val_pretty_default
);
466 if (len
== sizeof (float))
467 type
= builtin_type_float
;
468 else if (len
== sizeof (double))
469 type
= builtin_type_double
;
470 print_floating (valaddr
, type
, stream
);
477 /* Binary; 't' stands for "two". */
479 char bits
[8 * (sizeof val_long
) + 1];
480 char buf
[8 * (sizeof val_long
) + 32];
485 width
= 8 * (sizeof val_long
);
502 error ("Undefined output size \"%c\".", size
);
508 bits
[width
] = (val_long
& 1) ? '1' : '0';
513 while (*cp
&& *cp
== '0')
518 strcpy (buf
, local_binary_format_prefix ());
520 strcat (buf
, local_binary_format_suffix ());
521 fprintf_filtered (stream
, buf
);
526 error ("Undefined output format \"%c\".", format
);
530 /* Specify default address for `x' command.
531 `info lines' uses this. */
534 set_next_address (addr
)
539 /* Make address available to the user as $_. */
540 set_internalvar (lookup_internalvar ("_"),
541 value_from_pointer (lookup_pointer_type (builtin_type_void
),
545 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
546 after LEADIN. Print nothing if no symbolic name is found nearby.
547 Optionally also print source file and line number, if available.
548 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
549 or to interpret it as a possible C++ name and convert it back to source
550 form. However note that DO_DEMANGLE can be overridden by the specific
551 settings of the demangle and asm_demangle variables. */
554 print_address_symbolic (addr
, stream
, do_demangle
, leadin
)
556 struct ui_file
*stream
;
561 char *filename
= NULL
;
566 /* throw away both name and filename */
567 struct cleanup
*cleanup_chain
= make_cleanup (free_current_contents
, &name
);
568 make_cleanup (free_current_contents
, &filename
);
570 if (build_address_symbolic (addr
, do_demangle
, &name
, &offset
, &filename
, &line
, &unmapped
))
572 do_cleanups (cleanup_chain
);
576 fputs_filtered (leadin
, stream
);
578 fputs_filtered ("<*", stream
);
580 fputs_filtered ("<", stream
);
581 fputs_filtered (name
, stream
);
583 fprintf_filtered (stream
, "+%u", (unsigned int) offset
);
585 /* Append source filename and line number if desired. Give specific
586 line # of this addr, if we have it; else line # of the nearest symbol. */
587 if (print_symbol_filename
&& filename
!= NULL
)
590 fprintf_filtered (stream
, " at %s:%d", filename
, line
);
592 fprintf_filtered (stream
, " in %s", filename
);
595 fputs_filtered ("*>", stream
);
597 fputs_filtered (">", stream
);
599 do_cleanups (cleanup_chain
);
602 /* Given an address ADDR return all the elements needed to print the
603 address in a symbolic form. NAME can be mangled or not depending
604 on DO_DEMANGLE (and also on the asm_demangle global variable,
605 manipulated via ''set print asm-demangle''). Return 0 in case of
606 success, when all the info in the OUT paramters is valid. Return 1
609 build_address_symbolic (CORE_ADDR addr
, /* IN */
610 int do_demangle
, /* IN */
611 char **name
, /* OUT */
612 int *offset
, /* OUT */
613 char **filename
, /* OUT */
615 int *unmapped
) /* OUT */
617 struct minimal_symbol
*msymbol
;
618 struct symbol
*symbol
;
619 struct symtab
*symtab
= 0;
620 CORE_ADDR name_location
= 0;
621 asection
*section
= 0;
622 char *name_temp
= "";
624 /* Let's say it is unmapped. */
627 /* Determine if the address is in an overlay, and whether it is
629 if (overlay_debugging
)
631 section
= find_pc_overlay (addr
);
632 if (pc_in_unmapped_range (addr
, section
))
635 addr
= overlay_mapped_address (addr
, section
);
639 /* On some targets, add in extra "flag" bits to PC for
640 disassembly. This should ensure that "rounding errors" in
641 symbol addresses that are masked for disassembly favour the
642 the correct symbol. */
644 #ifdef GDB_TARGET_UNMASK_DISAS_PC
645 addr
= GDB_TARGET_UNMASK_DISAS_PC (addr
);
648 /* First try to find the address in the symbol table, then
649 in the minsyms. Take the closest one. */
651 /* This is defective in the sense that it only finds text symbols. So
652 really this is kind of pointless--we should make sure that the
653 minimal symbols have everything we need (by changing that we could
654 save some memory, but for many debug format--ELF/DWARF or
655 anything/stabs--it would be inconvenient to eliminate those minimal
657 msymbol
= lookup_minimal_symbol_by_pc_section (addr
, section
);
658 symbol
= find_pc_sect_function (addr
, section
);
662 name_location
= BLOCK_START (SYMBOL_BLOCK_VALUE (symbol
));
664 name_temp
= SYMBOL_SOURCE_NAME (symbol
);
666 name_temp
= SYMBOL_LINKAGE_NAME (symbol
);
671 if (SYMBOL_VALUE_ADDRESS (msymbol
) > name_location
|| symbol
== NULL
)
673 /* The msymbol is closer to the address than the symbol;
674 use the msymbol instead. */
677 name_location
= SYMBOL_VALUE_ADDRESS (msymbol
);
679 name_temp
= SYMBOL_SOURCE_NAME (msymbol
);
681 name_temp
= SYMBOL_LINKAGE_NAME (msymbol
);
684 if (symbol
== NULL
&& msymbol
== NULL
)
687 /* On some targets, mask out extra "flag" bits from PC for handsome
690 #ifdef GDB_TARGET_MASK_DISAS_PC
691 name_location
= GDB_TARGET_MASK_DISAS_PC (name_location
);
692 addr
= GDB_TARGET_MASK_DISAS_PC (addr
);
695 /* If the nearest symbol is too far away, don't print anything symbolic. */
697 /* For when CORE_ADDR is larger than unsigned int, we do math in
698 CORE_ADDR. But when we detect unsigned wraparound in the
699 CORE_ADDR math, we ignore this test and print the offset,
700 because addr+max_symbolic_offset has wrapped through the end
701 of the address space back to the beginning, giving bogus comparison. */
702 if (addr
> name_location
+ max_symbolic_offset
703 && name_location
+ max_symbolic_offset
> name_location
)
706 *offset
= addr
- name_location
;
708 *name
= xstrdup (name_temp
);
710 if (print_symbol_filename
)
712 struct symtab_and_line sal
;
714 sal
= find_pc_sect_line (addr
, section
, 0);
718 *filename
= xstrdup (sal
.symtab
->filename
);
721 else if (symtab
&& symbol
&& symbol
->line
)
723 *filename
= xstrdup (symtab
->filename
);
724 *line
= symbol
->line
;
728 *filename
= xstrdup (symtab
->filename
);
735 /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
738 print_address_numeric (addr
, use_local
, stream
)
741 struct ui_file
*stream
;
743 /* This assumes a CORE_ADDR can fit in a LONGEST. Probably a safe
745 print_longest (stream
, 'x', use_local
, (ULONGEST
) addr
);
748 /* Print address ADDR symbolically on STREAM.
749 First print it as a number. Then perhaps print
750 <SYMBOL + OFFSET> after the number. */
753 print_address (addr
, stream
)
755 struct ui_file
*stream
;
757 print_address_numeric (addr
, 1, stream
);
758 print_address_symbolic (addr
, stream
, asm_demangle
, " ");
761 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
762 controls whether to print the symbolic name "raw" or demangled.
763 Global setting "addressprint" controls whether to print hex address
767 print_address_demangle (addr
, stream
, do_demangle
)
769 struct ui_file
*stream
;
774 fprintf_filtered (stream
, "0");
776 else if (addressprint
)
778 print_address_numeric (addr
, 1, stream
);
779 print_address_symbolic (addr
, stream
, do_demangle
, " ");
783 print_address_symbolic (addr
, stream
, do_demangle
, "");
788 /* These are the types that $__ will get after an examine command of one
791 static struct type
*examine_i_type
;
793 static struct type
*examine_b_type
;
794 static struct type
*examine_h_type
;
795 static struct type
*examine_w_type
;
796 static struct type
*examine_g_type
;
798 /* Examine data at address ADDR in format FMT.
799 Fetch it from memory and print on gdb_stdout. */
802 do_examine (fmt
, addr
, sect
)
803 struct format_data fmt
;
807 register char format
= 0;
809 register int count
= 1;
810 struct type
*val_type
= NULL
;
812 register int maxelts
;
820 /* String or instruction format implies fetch single bytes
821 regardless of the specified size. */
822 if (format
== 's' || format
== 'i')
826 val_type
= examine_i_type
;
827 else if (size
== 'b')
828 val_type
= examine_b_type
;
829 else if (size
== 'h')
830 val_type
= examine_h_type
;
831 else if (size
== 'w')
832 val_type
= examine_w_type
;
833 else if (size
== 'g')
834 val_type
= examine_g_type
;
841 if (format
== 's' || format
== 'i')
844 /* Print as many objects as specified in COUNT, at most maxelts per line,
845 with the address of the next one at the start of each line. */
850 print_address (next_address
, gdb_stdout
);
851 printf_filtered (":");
856 printf_filtered ("\t");
857 /* Note that print_formatted sets next_address for the next
859 last_examine_address
= next_address
;
861 if (last_examine_value
)
862 value_free (last_examine_value
);
864 /* The value to be displayed is not fetched greedily.
865 Instead, to avoid the posibility of a fetched value not
866 being used, its retreval is delayed until the print code
867 uses it. When examining an instruction stream, the
868 disassembler will perform its own memory fetch using just
869 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
870 the disassembler be modified so that LAST_EXAMINE_VALUE
871 is left with the byte sequence from the last complete
872 instruction fetched from memory? */
873 last_examine_value
= value_at_lazy (val_type
, next_address
, sect
);
875 if (last_examine_value
)
876 release_value (last_examine_value
);
878 print_formatted (last_examine_value
, format
, size
, gdb_stdout
);
880 printf_filtered ("\n");
881 gdb_flush (gdb_stdout
);
886 validate_format (fmt
, cmdname
)
887 struct format_data fmt
;
891 error ("Size letters are meaningless in \"%s\" command.", cmdname
);
893 error ("Item count other than 1 is meaningless in \"%s\" command.",
895 if (fmt
.format
== 'i' || fmt
.format
== 's')
896 error ("Format letter \"%c\" is meaningless in \"%s\" command.",
897 fmt
.format
, cmdname
);
900 /* Evaluate string EXP as an expression in the current language and
901 print the resulting value. EXP may contain a format specifier as the
902 first argument ("/x myvar" for example, to print myvar in hex).
906 print_command_1 (exp
, inspect
, voidprint
)
911 struct expression
*expr
;
912 register struct cleanup
*old_chain
= 0;
913 register char format
= 0;
914 register value_ptr val
;
915 struct format_data fmt
;
918 /* Pass inspect flag to the rest of the print routines in a global (sigh). */
919 inspect_it
= inspect
;
921 if (exp
&& *exp
== '/')
924 fmt
= decode_format (&exp
, last_format
, 0);
925 validate_format (fmt
, "print");
926 last_format
= format
= fmt
.format
;
938 expr
= parse_expression (exp
);
939 old_chain
= make_cleanup (free_current_contents
, &expr
);
941 val
= evaluate_expression (expr
);
943 /* C++: figure out what type we actually want to print it as. */
944 type
= VALUE_TYPE (val
);
947 && (TYPE_CODE (type
) == TYPE_CODE_PTR
948 || TYPE_CODE (type
) == TYPE_CODE_REF
)
949 && (TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_STRUCT
950 || TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_UNION
))
954 v
= value_from_vtable_info (val
, TYPE_TARGET_TYPE (type
));
958 type
= VALUE_TYPE (val
);
963 val
= access_value_history (0);
965 if (voidprint
|| (val
&& VALUE_TYPE (val
) &&
966 TYPE_CODE (VALUE_TYPE (val
)) != TYPE_CODE_VOID
))
968 int histindex
= record_latest_value (val
);
971 annotate_value_history_begin (histindex
, VALUE_TYPE (val
));
973 annotate_value_begin (VALUE_TYPE (val
));
976 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp
, histindex
);
977 else if (histindex
>= 0)
978 printf_filtered ("$%d = ", histindex
);
981 annotate_value_history_value ();
983 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
984 printf_filtered ("\n");
987 annotate_value_history_end ();
989 annotate_value_end ();
992 printf_unfiltered ("\") )\030");
996 do_cleanups (old_chain
);
997 inspect_it
= 0; /* Reset print routines to normal */
1002 print_command (exp
, from_tty
)
1006 print_command_1 (exp
, 0, 1);
1009 /* Same as print, except in epoch, it gets its own window */
1012 inspect_command (exp
, from_tty
)
1016 extern int epoch_interface
;
1018 print_command_1 (exp
, epoch_interface
, 1);
1021 /* Same as print, except it doesn't print void results. */
1024 call_command (exp
, from_tty
)
1028 print_command_1 (exp
, 0, 0);
1033 output_command (exp
, from_tty
)
1037 struct expression
*expr
;
1038 register struct cleanup
*old_chain
;
1039 register char format
= 0;
1040 register value_ptr val
;
1041 struct format_data fmt
;
1043 if (exp
&& *exp
== '/')
1046 fmt
= decode_format (&exp
, 0, 0);
1047 validate_format (fmt
, "output");
1048 format
= fmt
.format
;
1051 expr
= parse_expression (exp
);
1052 old_chain
= make_cleanup (free_current_contents
, &expr
);
1054 val
= evaluate_expression (expr
);
1056 annotate_value_begin (VALUE_TYPE (val
));
1058 print_formatted (val
, format
, fmt
.size
, gdb_stdout
);
1060 annotate_value_end ();
1063 gdb_flush (gdb_stdout
);
1065 do_cleanups (old_chain
);
1070 set_command (exp
, from_tty
)
1074 struct expression
*expr
= parse_expression (exp
);
1075 register struct cleanup
*old_chain
=
1076 make_cleanup (free_current_contents
, &expr
);
1077 evaluate_expression (expr
);
1078 do_cleanups (old_chain
);
1083 sym_info (arg
, from_tty
)
1087 struct minimal_symbol
*msymbol
;
1088 struct objfile
*objfile
;
1089 struct obj_section
*osect
;
1091 CORE_ADDR addr
, sect_addr
;
1093 unsigned int offset
;
1096 error_no_arg ("address");
1098 addr
= parse_and_eval_address (arg
);
1099 ALL_OBJSECTIONS (objfile
, osect
)
1101 sect
= osect
->the_bfd_section
;
1102 sect_addr
= overlay_mapped_address (addr
, sect
);
1104 if (osect
->addr
<= sect_addr
&& sect_addr
< osect
->endaddr
&&
1105 (msymbol
= lookup_minimal_symbol_by_pc_section (sect_addr
, sect
)))
1108 offset
= sect_addr
- SYMBOL_VALUE_ADDRESS (msymbol
);
1110 printf_filtered ("%s + %u in ",
1111 SYMBOL_SOURCE_NAME (msymbol
), offset
);
1113 printf_filtered ("%s in ",
1114 SYMBOL_SOURCE_NAME (msymbol
));
1115 if (pc_in_unmapped_range (addr
, sect
))
1116 printf_filtered ("load address range of ");
1117 if (section_is_overlay (sect
))
1118 printf_filtered ("%s overlay ",
1119 section_is_mapped (sect
) ? "mapped" : "unmapped");
1120 printf_filtered ("section %s", sect
->name
);
1121 printf_filtered ("\n");
1125 printf_filtered ("No symbol matches %s.\n", arg
);
1130 address_info (exp
, from_tty
)
1134 register struct symbol
*sym
;
1135 register struct minimal_symbol
*msymbol
;
1137 register long basereg
;
1139 CORE_ADDR load_addr
;
1140 int is_a_field_of_this
; /* C++: lookup_symbol sets this to nonzero
1141 if exp is a field of `this'. */
1144 error ("Argument required.");
1146 sym
= lookup_symbol (exp
, get_selected_block (), VAR_NAMESPACE
,
1147 &is_a_field_of_this
, (struct symtab
**) NULL
);
1150 if (is_a_field_of_this
)
1152 printf_filtered ("Symbol \"");
1153 fprintf_symbol_filtered (gdb_stdout
, exp
,
1154 current_language
->la_language
, DMGL_ANSI
);
1155 printf_filtered ("\" is a field of the local class variable `this'\n");
1159 msymbol
= lookup_minimal_symbol (exp
, NULL
, NULL
);
1161 if (msymbol
!= NULL
)
1163 load_addr
= SYMBOL_VALUE_ADDRESS (msymbol
);
1165 printf_filtered ("Symbol \"");
1166 fprintf_symbol_filtered (gdb_stdout
, exp
,
1167 current_language
->la_language
, DMGL_ANSI
);
1168 printf_filtered ("\" is at ");
1169 print_address_numeric (load_addr
, 1, gdb_stdout
);
1170 printf_filtered (" in a file compiled without debugging");
1171 section
= SYMBOL_BFD_SECTION (msymbol
);
1172 if (section_is_overlay (section
))
1174 load_addr
= overlay_unmapped_address (load_addr
, section
);
1175 printf_filtered (",\n -- loaded at ");
1176 print_address_numeric (load_addr
, 1, gdb_stdout
);
1177 printf_filtered (" in overlay section %s", section
->name
);
1179 printf_filtered (".\n");
1182 error ("No symbol \"%s\" in current context.", exp
);
1186 printf_filtered ("Symbol \"");
1187 fprintf_symbol_filtered (gdb_stdout
, SYMBOL_NAME (sym
),
1188 current_language
->la_language
, DMGL_ANSI
);
1189 printf_filtered ("\" is ");
1190 val
= SYMBOL_VALUE (sym
);
1191 basereg
= SYMBOL_BASEREG (sym
);
1192 section
= SYMBOL_BFD_SECTION (sym
);
1194 switch (SYMBOL_CLASS (sym
))
1197 case LOC_CONST_BYTES
:
1198 printf_filtered ("constant");
1202 printf_filtered ("a label at address ");
1203 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1205 if (section_is_overlay (section
))
1207 load_addr
= overlay_unmapped_address (load_addr
, section
);
1208 printf_filtered (",\n -- loaded at ");
1209 print_address_numeric (load_addr
, 1, gdb_stdout
);
1210 printf_filtered (" in overlay section %s", section
->name
);
1215 printf_filtered ("a variable in register %s", REGISTER_NAME (val
));
1219 printf_filtered ("static storage at address ");
1220 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1222 if (section_is_overlay (section
))
1224 load_addr
= overlay_unmapped_address (load_addr
, section
);
1225 printf_filtered (",\n -- loaded at ");
1226 print_address_numeric (load_addr
, 1, gdb_stdout
);
1227 printf_filtered (" in overlay section %s", section
->name
);
1232 printf_filtered ("external global (indirect addressing), at address *(");
1233 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (sym
),
1235 printf_filtered (")");
1236 if (section_is_overlay (section
))
1238 load_addr
= overlay_unmapped_address (load_addr
, section
);
1239 printf_filtered (",\n -- loaded at ");
1240 print_address_numeric (load_addr
, 1, gdb_stdout
);
1241 printf_filtered (" in overlay section %s", section
->name
);
1246 printf_filtered ("an argument in register %s", REGISTER_NAME (val
));
1249 case LOC_REGPARM_ADDR
:
1250 printf_filtered ("address of an argument in register %s", REGISTER_NAME (val
));
1254 printf_filtered ("an argument at offset %ld", val
);
1258 printf_filtered ("an argument at frame offset %ld", val
);
1262 printf_filtered ("a local variable at frame offset %ld", val
);
1266 printf_filtered ("a reference argument at offset %ld", val
);
1270 printf_filtered ("a variable at offset %ld from register %s",
1271 val
, REGISTER_NAME (basereg
));
1274 case LOC_BASEREG_ARG
:
1275 printf_filtered ("an argument at offset %ld from register %s",
1276 val
, REGISTER_NAME (basereg
));
1280 printf_filtered ("a typedef");
1284 printf_filtered ("a function at address ");
1285 #ifdef GDB_TARGET_MASK_DISAS_PC
1286 print_address_numeric
1287 (load_addr
= GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
))),
1290 print_address_numeric (load_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
1293 if (section_is_overlay (section
))
1295 load_addr
= overlay_unmapped_address (load_addr
, section
);
1296 printf_filtered (",\n -- loaded at ");
1297 print_address_numeric (load_addr
, 1, gdb_stdout
);
1298 printf_filtered (" in overlay section %s", section
->name
);
1302 case LOC_UNRESOLVED
:
1304 struct minimal_symbol
*msym
;
1306 msym
= lookup_minimal_symbol (SYMBOL_NAME (sym
), NULL
, NULL
);
1308 printf_filtered ("unresolved");
1311 section
= SYMBOL_BFD_SECTION (msym
);
1312 printf_filtered ("static storage at address ");
1313 print_address_numeric (load_addr
= SYMBOL_VALUE_ADDRESS (msym
),
1315 if (section_is_overlay (section
))
1317 load_addr
= overlay_unmapped_address (load_addr
, section
);
1318 printf_filtered (",\n -- loaded at ");
1319 print_address_numeric (load_addr
, 1, gdb_stdout
);
1320 printf_filtered (" in overlay section %s", section
->name
);
1326 case LOC_THREAD_LOCAL_STATIC
:
1328 "a thread-local variable at offset %ld from the thread base register %s",
1329 val
, REGISTER_NAME (basereg
));
1332 case LOC_OPTIMIZED_OUT
:
1333 printf_filtered ("optimized out");
1337 printf_filtered ("of unknown (botched) type");
1340 printf_filtered (".\n");
1344 x_command (exp
, from_tty
)
1348 struct expression
*expr
;
1349 struct format_data fmt
;
1350 struct cleanup
*old_chain
;
1353 fmt
.format
= last_format
;
1354 fmt
.size
= last_size
;
1357 if (exp
&& *exp
== '/')
1360 fmt
= decode_format (&exp
, last_format
, last_size
);
1363 /* If we have an expression, evaluate it and use it as the address. */
1365 if (exp
!= 0 && *exp
!= 0)
1367 expr
= parse_expression (exp
);
1368 /* Cause expression not to be there any more
1369 if this command is repeated with Newline.
1370 But don't clobber a user-defined command's definition. */
1373 old_chain
= make_cleanup (free_current_contents
, &expr
);
1374 val
= evaluate_expression (expr
);
1375 if (TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_REF
)
1376 val
= value_ind (val
);
1377 /* In rvalue contexts, such as this, functions are coerced into
1378 pointers to functions. This makes "x/i main" work. */
1379 if ( /* last_format == 'i'
1380 && */ TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_FUNC
1381 && VALUE_LVAL (val
) == lval_memory
)
1382 next_address
= VALUE_ADDRESS (val
);
1384 next_address
= value_as_pointer (val
);
1385 if (VALUE_BFD_SECTION (val
))
1386 next_section
= VALUE_BFD_SECTION (val
);
1387 do_cleanups (old_chain
);
1390 do_examine (fmt
, next_address
, next_section
);
1392 /* If the examine succeeds, we remember its size and format for next time. */
1393 last_size
= fmt
.size
;
1394 last_format
= fmt
.format
;
1396 /* Set a couple of internal variables if appropriate. */
1397 if (last_examine_value
)
1399 /* Make last address examined available to the user as $_. Use
1400 the correct pointer type. */
1401 struct type
*pointer_type
1402 = lookup_pointer_type (VALUE_TYPE (last_examine_value
));
1403 set_internalvar (lookup_internalvar ("_"),
1404 value_from_pointer (pointer_type
,
1405 last_examine_address
));
1407 /* Make contents of last address examined available to the user as $__. */
1408 /* If the last value has not been fetched from memory then don't
1409 fetch it now - instead mark it by voiding the $__ variable. */
1410 if (VALUE_LAZY (last_examine_value
))
1411 set_internalvar (lookup_internalvar ("__"),
1412 allocate_value (builtin_type_void
));
1414 set_internalvar (lookup_internalvar ("__"), last_examine_value
);
1419 /* Add an expression to the auto-display chain.
1420 Specify the expression. */
1423 display_command (exp
, from_tty
)
1427 struct format_data fmt
;
1428 register struct expression
*expr
;
1429 register struct display
*new;
1433 if (tui_version
&& *exp
== '$')
1434 display_it
= ((TuiStatus
) tuiDo (
1435 (TuiOpaqueFuncPtr
) tui_vSetLayoutTo
, exp
) == TUI_FAILURE
);
1449 fmt
= decode_format (&exp
, 0, 0);
1450 if (fmt
.size
&& fmt
.format
== 0)
1452 if (fmt
.format
== 'i' || fmt
.format
== 's')
1462 innermost_block
= 0;
1463 expr
= parse_expression (exp
);
1465 new = (struct display
*) xmalloc (sizeof (struct display
));
1468 new->block
= innermost_block
;
1469 new->next
= display_chain
;
1470 new->number
= ++display_number
;
1472 new->status
= enabled
;
1473 display_chain
= new;
1475 if (from_tty
&& target_has_execution
)
1476 do_one_display (new);
1486 free ((PTR
) d
->exp
);
1490 /* Clear out the display_chain.
1491 Done when new symtabs are loaded, since this invalidates
1492 the types stored in many expressions. */
1497 register struct display
*d
;
1499 while ((d
= display_chain
) != NULL
)
1501 free ((PTR
) d
->exp
);
1502 display_chain
= d
->next
;
1507 /* Delete the auto-display number NUM. */
1510 delete_display (num
)
1513 register struct display
*d1
, *d
;
1516 error ("No display number %d.", num
);
1518 if (display_chain
->number
== num
)
1521 display_chain
= d1
->next
;
1525 for (d
= display_chain
;; d
= d
->next
)
1528 error ("No display number %d.", num
);
1529 if (d
->next
->number
== num
)
1539 /* Delete some values from the auto-display chain.
1540 Specify the element numbers. */
1543 undisplay_command (args
, from_tty
)
1547 register char *p
= args
;
1553 if (query ("Delete all auto-display expressions? "))
1562 while (*p1
>= '0' && *p1
<= '9')
1564 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1565 error ("Arguments must be display numbers.");
1569 delete_display (num
);
1572 while (*p
== ' ' || *p
== '\t')
1578 /* Display a single auto-display.
1579 Do nothing if the display cannot be printed in the current context,
1580 or if the display is disabled. */
1586 int within_current_scope
;
1588 if (d
->status
== disabled
)
1592 within_current_scope
= contained_in (get_selected_block (), d
->block
);
1594 within_current_scope
= 1;
1595 if (!within_current_scope
)
1598 current_display_number
= d
->number
;
1600 annotate_display_begin ();
1601 printf_filtered ("%d", d
->number
);
1602 annotate_display_number_end ();
1603 printf_filtered (": ");
1609 annotate_display_format ();
1611 printf_filtered ("x/");
1612 if (d
->format
.count
!= 1)
1613 printf_filtered ("%d", d
->format
.count
);
1614 printf_filtered ("%c", d
->format
.format
);
1615 if (d
->format
.format
!= 'i' && d
->format
.format
!= 's')
1616 printf_filtered ("%c", d
->format
.size
);
1617 printf_filtered (" ");
1619 annotate_display_expression ();
1621 print_expression (d
->exp
, gdb_stdout
);
1622 annotate_display_expression_end ();
1624 if (d
->format
.count
!= 1)
1625 printf_filtered ("\n");
1627 printf_filtered (" ");
1629 val
= evaluate_expression (d
->exp
);
1630 addr
= value_as_pointer (val
);
1631 if (d
->format
.format
== 'i')
1632 addr
= ADDR_BITS_REMOVE (addr
);
1634 annotate_display_value ();
1636 do_examine (d
->format
, addr
, VALUE_BFD_SECTION (val
));
1640 annotate_display_format ();
1642 if (d
->format
.format
)
1643 printf_filtered ("/%c ", d
->format
.format
);
1645 annotate_display_expression ();
1647 print_expression (d
->exp
, gdb_stdout
);
1648 annotate_display_expression_end ();
1650 printf_filtered (" = ");
1652 annotate_display_expression ();
1654 print_formatted (evaluate_expression (d
->exp
),
1655 d
->format
.format
, d
->format
.size
, gdb_stdout
);
1656 printf_filtered ("\n");
1659 annotate_display_end ();
1661 gdb_flush (gdb_stdout
);
1662 current_display_number
= -1;
1665 /* Display all of the values on the auto-display chain which can be
1666 evaluated in the current scope. */
1671 register struct display
*d
;
1673 for (d
= display_chain
; d
; d
= d
->next
)
1677 /* Delete the auto-display which we were in the process of displaying.
1678 This is done when there is an error or a signal. */
1681 disable_display (num
)
1684 register struct display
*d
;
1686 for (d
= display_chain
; d
; d
= d
->next
)
1687 if (d
->number
== num
)
1689 d
->status
= disabled
;
1692 printf_unfiltered ("No display number %d.\n", num
);
1696 disable_current_display ()
1698 if (current_display_number
>= 0)
1700 disable_display (current_display_number
);
1701 fprintf_unfiltered (gdb_stderr
, "Disabling display %d to avoid infinite recursion.\n",
1702 current_display_number
);
1704 current_display_number
= -1;
1708 display_info (ignore
, from_tty
)
1712 register struct display
*d
;
1715 printf_unfiltered ("There are no auto-display expressions now.\n");
1717 printf_filtered ("Auto-display expressions now in effect:\n\
1718 Num Enb Expression\n");
1720 for (d
= display_chain
; d
; d
= d
->next
)
1722 printf_filtered ("%d: %c ", d
->number
, "ny"[(int) d
->status
]);
1724 printf_filtered ("/%d%c%c ", d
->format
.count
, d
->format
.size
,
1726 else if (d
->format
.format
)
1727 printf_filtered ("/%c ", d
->format
.format
);
1728 print_expression (d
->exp
, gdb_stdout
);
1729 if (d
->block
&& !contained_in (get_selected_block (), d
->block
))
1730 printf_filtered (" (cannot be evaluated in the current context)");
1731 printf_filtered ("\n");
1732 gdb_flush (gdb_stdout
);
1737 enable_display (args
, from_tty
)
1741 register char *p
= args
;
1744 register struct display
*d
;
1748 for (d
= display_chain
; d
; d
= d
->next
)
1749 d
->status
= enabled
;
1755 while (*p1
>= '0' && *p1
<= '9')
1757 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1758 error ("Arguments must be display numbers.");
1762 for (d
= display_chain
; d
; d
= d
->next
)
1763 if (d
->number
== num
)
1765 d
->status
= enabled
;
1768 printf_unfiltered ("No display number %d.\n", num
);
1771 while (*p
== ' ' || *p
== '\t')
1778 disable_display_command (args
, from_tty
)
1782 register char *p
= args
;
1784 register struct display
*d
;
1788 for (d
= display_chain
; d
; d
= d
->next
)
1789 d
->status
= disabled
;
1795 while (*p1
>= '0' && *p1
<= '9')
1797 if (*p1
&& *p1
!= ' ' && *p1
!= '\t')
1798 error ("Arguments must be display numbers.");
1800 disable_display (atoi (p
));
1803 while (*p
== ' ' || *p
== '\t')
1809 /* Print the value in stack frame FRAME of a variable
1810 specified by a struct symbol. */
1813 print_variable_value (var
, frame
, stream
)
1815 struct frame_info
*frame
;
1816 struct ui_file
*stream
;
1818 value_ptr val
= read_var_value (var
, frame
);
1820 value_print (val
, stream
, 0, Val_pretty_default
);
1823 /* Print the arguments of a stack frame, given the function FUNC
1824 running in that frame (as a symbol), the info on the frame,
1825 and the number of args according to the stack frame (or -1 if unknown). */
1827 /* References here and elsewhere to "number of args according to the
1828 stack frame" appear in all cases to refer to "number of ints of args
1829 according to the stack frame". At least for VAX, i386, isi. */
1832 print_frame_args (func
, fi
, num
, stream
)
1833 struct symbol
*func
;
1834 struct frame_info
*fi
;
1836 struct ui_file
*stream
;
1838 struct block
*b
= NULL
;
1842 register struct symbol
*sym
;
1843 register value_ptr val
;
1844 /* Offset of next stack argument beyond the one we have seen that is
1845 at the highest offset.
1846 -1 if we haven't come to a stack argument yet. */
1847 long highest_offset
= -1;
1849 /* Number of ints of arguments that we have printed so far. */
1850 int args_printed
= 0;
1852 struct cleanup
*old_chain
;
1853 struct ui_stream
*stb
;
1855 stb
= ui_out_stream_new (uiout
);
1856 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1861 b
= SYMBOL_BLOCK_VALUE (func
);
1862 nsyms
= BLOCK_NSYMS (b
);
1865 for (i
= 0; i
< nsyms
; i
++)
1868 sym
= BLOCK_SYM (b
, i
);
1870 /* Keep track of the highest stack argument offset seen, and
1871 skip over any kinds of symbols we don't care about. */
1873 switch (SYMBOL_CLASS (sym
))
1878 long current_offset
= SYMBOL_VALUE (sym
);
1879 arg_size
= TYPE_LENGTH (SYMBOL_TYPE (sym
));
1881 /* Compute address of next argument by adding the size of
1882 this argument and rounding to an int boundary. */
1884 ((current_offset
+ arg_size
+ sizeof (int) - 1)
1885 & ~(sizeof (int) - 1));
1887 /* If this is the highest offset seen yet, set highest_offset. */
1888 if (highest_offset
== -1
1889 || (current_offset
> highest_offset
))
1890 highest_offset
= current_offset
;
1892 /* Add the number of ints we're about to print to args_printed. */
1893 args_printed
+= (arg_size
+ sizeof (int) - 1) / sizeof (int);
1896 /* We care about types of symbols, but don't need to keep track of
1897 stack offsets in them. */
1899 case LOC_REGPARM_ADDR
:
1901 case LOC_BASEREG_ARG
:
1904 /* Other types of symbols we just skip over. */
1909 /* We have to look up the symbol because arguments can have
1910 two entries (one a parameter, one a local) and the one we
1911 want is the local, which lookup_symbol will find for us.
1912 This includes gcc1 (not gcc2) on the sparc when passing a
1913 small structure and gcc2 when the argument type is float
1914 and it is passed as a double and converted to float by
1915 the prologue (in the latter case the type of the LOC_ARG
1916 symbol is double and the type of the LOC_LOCAL symbol is
1918 /* But if the parameter name is null, don't try it.
1919 Null parameter names occur on the RS/6000, for traceback tables.
1920 FIXME, should we even print them? */
1922 if (*SYMBOL_NAME (sym
))
1924 struct symbol
*nsym
;
1925 nsym
= lookup_symbol
1927 b
, VAR_NAMESPACE
, (int *) NULL
, (struct symtab
**) NULL
);
1928 if (SYMBOL_CLASS (nsym
) == LOC_REGISTER
)
1930 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1931 it was passed on the stack and loaded into a register,
1932 or passed in a register and stored in a stack slot.
1933 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1935 Reasons for using the LOC_ARG:
1936 (1) because find_saved_registers may be slow for remote
1938 (2) because registers are often re-used and stack slots
1939 rarely (never?) are. Therefore using the stack slot is
1940 much less likely to print garbage.
1942 Reasons why we might want to use the LOC_REGISTER:
1943 (1) So that the backtrace prints the same value as
1944 "print foo". I see no compelling reason why this needs
1945 to be the case; having the backtrace print the value which
1946 was passed in, and "print foo" print the value as modified
1947 within the called function, makes perfect sense to me.
1949 Additional note: It might be nice if "info args" displayed
1951 One more note: There is a case with sparc structure passing
1952 where we need to use the LOC_REGISTER, but this is dealt with
1953 by creating a single LOC_REGPARM in symbol reading. */
1955 /* Leave sym (the LOC_ARG) alone. */
1963 /* Print the current arg. */
1965 ui_out_text (uiout
, ", ");
1966 ui_out_wrap_hint (uiout
, " ");
1968 annotate_arg_begin ();
1970 ui_out_list_begin (uiout
, NULL
);
1971 fprintf_symbol_filtered (stb
->stream
, SYMBOL_SOURCE_NAME (sym
),
1972 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1973 ui_out_field_stream (uiout
, "name", stb
);
1974 annotate_arg_name_end ();
1975 ui_out_text (uiout
, "=");
1977 /* Print the current arg. */
1979 fprintf_filtered (stream
, ", ");
1982 annotate_arg_begin ();
1984 fprintf_symbol_filtered (stream
, SYMBOL_SOURCE_NAME (sym
),
1985 SYMBOL_LANGUAGE (sym
), DMGL_PARAMS
| DMGL_ANSI
);
1986 annotate_arg_name_end ();
1987 fputs_filtered ("=", stream
);
1990 /* Avoid value_print because it will deref ref parameters. We just
1991 want to print their addresses. Print ??? for args whose address
1992 we do not know. We pass 2 as "recurse" to val_print because our
1993 standard indentation here is 4 spaces, and val_print indents
1994 2 for each recurse. */
1995 val
= read_var_value (sym
, fi
);
1997 annotate_arg_value (val
== NULL
? NULL
: VALUE_TYPE (val
));
2001 if (GDB_TARGET_IS_D10V
2002 && SYMBOL_CLASS (sym
) == LOC_REGPARM
&& TYPE_CODE (VALUE_TYPE (val
)) == TYPE_CODE_PTR
)
2003 TYPE_LENGTH (VALUE_TYPE (val
)) = 2;
2005 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
2006 VALUE_ADDRESS (val
),
2007 stb
->stream
, 0, 0, 2, Val_no_prettyprint
);
2008 ui_out_field_stream (uiout
, "value", stb
);
2011 ui_out_text (uiout
, "???");
2013 ui_out_list_end (uiout
);
2015 val_print (VALUE_TYPE (val
), VALUE_CONTENTS (val
), 0,
2016 VALUE_ADDRESS (val
),
2017 stream
, 0, 0, 2, Val_no_prettyprint
);
2020 fputs_filtered ("???", stream
);
2023 annotate_arg_end ();
2028 /* Don't print nameless args in situations where we don't know
2029 enough about the stack to find them. */
2034 if (highest_offset
== -1)
2035 start
= FRAME_ARGS_SKIP
;
2037 start
= highest_offset
;
2039 print_frame_nameless_args (fi
, start
, num
- args_printed
,
2043 do_cleanups (old_chain
);
2044 #endif /* no UI_OUT */
2047 /* Print nameless args on STREAM.
2048 FI is the frameinfo for this frame, START is the offset
2049 of the first nameless arg, and NUM is the number of nameless args to
2050 print. FIRST is nonzero if this is the first argument (not just
2051 the first nameless arg). */
2054 print_frame_nameless_args (fi
, start
, num
, first
, stream
)
2055 struct frame_info
*fi
;
2059 struct ui_file
*stream
;
2065 for (i
= 0; i
< num
; i
++)
2068 #ifdef NAMELESS_ARG_VALUE
2069 NAMELESS_ARG_VALUE (fi
, start
, &arg_value
);
2071 argsaddr
= FRAME_ARGS_ADDRESS (fi
);
2075 arg_value
= read_memory_integer (argsaddr
+ start
, sizeof (int));
2079 fprintf_filtered (stream
, ", ");
2081 #ifdef PRINT_NAMELESS_INTEGER
2082 PRINT_NAMELESS_INTEGER (stream
, arg_value
);
2084 #ifdef PRINT_TYPELESS_INTEGER
2085 PRINT_TYPELESS_INTEGER (stream
, builtin_type_int
, (LONGEST
) arg_value
);
2087 fprintf_filtered (stream
, "%ld", arg_value
);
2088 #endif /* PRINT_TYPELESS_INTEGER */
2089 #endif /* PRINT_NAMELESS_INTEGER */
2091 start
+= sizeof (int);
2097 printf_command (arg
, from_tty
)
2101 register char *f
= NULL
;
2102 register char *s
= arg
;
2103 char *string
= NULL
;
2104 value_ptr
*val_args
;
2106 char *current_substring
;
2108 int allocated_args
= 20;
2109 struct cleanup
*old_cleanups
;
2111 val_args
= (value_ptr
*) xmalloc (allocated_args
* sizeof (value_ptr
));
2112 old_cleanups
= make_cleanup (free_current_contents
, &val_args
);
2115 error_no_arg ("format-control string and values to print");
2117 /* Skip white space before format string */
2118 while (*s
== ' ' || *s
== '\t')
2121 /* A format string should follow, enveloped in double quotes */
2123 error ("Bad format string, missing '\"'.");
2125 /* Parse the format-control string and copy it into the string STRING,
2126 processing some kinds of escape sequence. */
2128 f
= string
= (char *) alloca (strlen (s
) + 1);
2136 error ("Bad format string, non-terminated '\"'.");
2148 *f
++ = '\007'; /* Bell */
2173 /* ??? TODO: handle other escape sequences */
2174 error ("Unrecognized escape character \\%c in format string.",
2184 /* Skip over " and following space and comma. */
2187 while (*s
== ' ' || *s
== '\t')
2190 if (*s
!= ',' && *s
!= 0)
2191 error ("Invalid argument syntax");
2195 while (*s
== ' ' || *s
== '\t')
2198 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2199 substrings
= alloca (strlen (string
) * 2);
2200 current_substring
= substrings
;
2203 /* Now scan the string for %-specs and see what kinds of args they want.
2204 argclass[I] classifies the %-specs so we can give printf_filtered
2205 something of the right size. */
2209 no_arg
, int_arg
, string_arg
, double_arg
, long_long_arg
2211 enum argclass
*argclass
;
2212 enum argclass this_argclass
;
2218 argclass
= (enum argclass
*) alloca (strlen (s
) * sizeof *argclass
);
2226 while (strchr ("0123456789.hlL-+ #", *f
))
2228 if (*f
== 'l' || *f
== 'L')
2235 this_argclass
= string_arg
;
2241 this_argclass
= double_arg
;
2245 error ("`*' not supported for precision or width in printf");
2248 error ("Format specifier `n' not supported in printf");
2251 this_argclass
= no_arg
;
2256 this_argclass
= long_long_arg
;
2258 this_argclass
= int_arg
;
2262 if (this_argclass
!= no_arg
)
2264 strncpy (current_substring
, last_arg
, f
- last_arg
);
2265 current_substring
+= f
- last_arg
;
2266 *current_substring
++ = '\0';
2268 argclass
[nargs_wanted
++] = this_argclass
;
2272 /* Now, parse all arguments and evaluate them.
2273 Store the VALUEs in VAL_ARGS. */
2278 if (nargs
== allocated_args
)
2279 val_args
= (value_ptr
*) xrealloc ((char *) val_args
,
2280 (allocated_args
*= 2)
2281 * sizeof (value_ptr
));
2283 val_args
[nargs
] = parse_to_comma_and_eval (&s1
);
2285 /* If format string wants a float, unchecked-convert the value to
2286 floating point of the same size */
2288 if (argclass
[nargs
] == double_arg
)
2290 struct type
*type
= VALUE_TYPE (val_args
[nargs
]);
2291 if (TYPE_LENGTH (type
) == sizeof (float))
2292 VALUE_TYPE (val_args
[nargs
]) = builtin_type_float
;
2293 if (TYPE_LENGTH (type
) == sizeof (double))
2294 VALUE_TYPE (val_args
[nargs
]) = builtin_type_double
;
2302 if (nargs
!= nargs_wanted
)
2303 error ("Wrong number of arguments for specified format-string");
2305 /* Now actually print them. */
2306 current_substring
= substrings
;
2307 for (i
= 0; i
< nargs
; i
++)
2309 switch (argclass
[i
])
2316 tem
= value_as_pointer (val_args
[i
]);
2318 /* This is a %s argument. Find the length of the string. */
2323 read_memory (tem
+ j
, &c
, 1);
2328 /* Copy the string contents into a string inside GDB. */
2329 str
= (char *) alloca (j
+ 1);
2330 read_memory (tem
, str
, j
);
2333 printf_filtered (current_substring
, str
);
2338 double val
= value_as_double (val_args
[i
]);
2339 printf_filtered (current_substring
, val
);
2343 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2345 long long val
= value_as_long (val_args
[i
]);
2346 printf_filtered (current_substring
, val
);
2350 error ("long long not supported in printf");
2354 /* FIXME: there should be separate int_arg and long_arg. */
2355 long val
= value_as_long (val_args
[i
]);
2356 printf_filtered (current_substring
, val
);
2359 default: /* purecov: deadcode */
2360 error ("internal error in printf_command"); /* purecov: deadcode */
2362 /* Skip to the next substring. */
2363 current_substring
+= strlen (current_substring
) + 1;
2365 /* Print the portion of the format string after the last argument. */
2366 printf_filtered (last_arg
);
2368 do_cleanups (old_cleanups
);
2371 /* Dump a specified section of assembly code. With no command line
2372 arguments, this command will dump the assembly code for the
2373 function surrounding the pc value in the selected frame. With one
2374 argument, it will dump the assembly code surrounding that pc value.
2375 Two arguments are interpeted as bounds within which to dump
2380 disassemble_command (arg
, from_tty
)
2384 CORE_ADDR low
, high
;
2386 CORE_ADDR pc
, pc_masked
;
2395 if (!selected_frame
)
2396 error ("No frame selected.\n");
2398 pc
= get_frame_pc (selected_frame
);
2399 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2400 error ("No function contains program counter for selected frame.\n");
2402 else if (tui_version
)
2403 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2407 low
+= FUNCTION_START_OFFSET
;
2409 else if (!(space_index
= (char *) strchr (arg
, ' ')))
2412 pc
= parse_and_eval_address (arg
);
2413 if (find_pc_partial_function (pc
, &name
, &low
, &high
) == 0)
2414 error ("No function contains specified address.\n");
2416 else if (tui_version
)
2417 low
= (CORE_ADDR
) tuiDo ((TuiOpaqueFuncPtr
) tui_vGetLowDisassemblyAddress
,
2422 if (overlay_debugging
)
2424 section
= find_pc_overlay (pc
);
2425 if (pc_in_unmapped_range (pc
, section
))
2427 /* find_pc_partial_function will have returned low and high
2428 relative to the symbolic (mapped) address range. Need to
2429 translate them back to the unmapped range where PC is. */
2430 low
= overlay_unmapped_address (low
, section
);
2431 high
= overlay_unmapped_address (high
, section
);
2435 low
+= FUNCTION_START_OFFSET
;
2439 /* Two arguments. */
2440 *space_index
= '\0';
2441 low
= parse_and_eval_address (arg
);
2442 high
= parse_and_eval_address (space_index
+ 1);
2447 m_winPtrIsNull (disassemWin
) || !disassemWin
->generic
.isVisible
)
2450 printf_filtered ("Dump of assembler code ");
2453 printf_filtered ("for function %s:\n", name
);
2457 printf_filtered ("from ");
2458 print_address_numeric (low
, 1, gdb_stdout
);
2459 printf_filtered (" to ");
2460 print_address_numeric (high
, 1, gdb_stdout
);
2461 printf_filtered (":\n");
2464 /* Dump the specified range. */
2467 #ifdef GDB_TARGET_MASK_DISAS_PC
2468 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2473 while (pc_masked
< high
)
2476 print_address (pc_masked
, gdb_stdout
);
2477 printf_filtered (":\t");
2478 /* We often wrap here if there are long symbolic names. */
2480 pc
+= print_insn (pc
, gdb_stdout
);
2481 printf_filtered ("\n");
2483 #ifdef GDB_TARGET_MASK_DISAS_PC
2484 pc_masked
= GDB_TARGET_MASK_DISAS_PC (pc
);
2489 printf_filtered ("End of assembler dump.\n");
2490 gdb_flush (gdb_stdout
);
2495 tuiDo ((TuiOpaqueFuncPtr
) tui_vAddWinToLayout
, DISASSEM_WIN
);
2496 tuiDo ((TuiOpaqueFuncPtr
) tui_vUpdateSourceWindowsWithAddr
, low
);
2501 /* Print the instruction at address MEMADDR in debugged memory,
2502 on STREAM. Returns length of the instruction, in bytes. */
2505 print_insn (memaddr
, stream
)
2507 struct ui_file
*stream
;
2509 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2510 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_BIG
;
2512 TARGET_PRINT_INSN_INFO
->endian
= BFD_ENDIAN_LITTLE
;
2514 if (TARGET_ARCHITECTURE
!= NULL
)
2515 TARGET_PRINT_INSN_INFO
->mach
= TARGET_ARCHITECTURE
->mach
;
2516 /* else: should set .mach=0 but some disassemblers don't grok this */
2518 return TARGET_PRINT_INSN (memaddr
, TARGET_PRINT_INSN_INFO
);
2523 _initialize_printcmd ()
2525 current_display_number
= -1;
2527 add_info ("address", address_info
,
2528 "Describe where symbol SYM is stored.");
2530 add_info ("symbol", sym_info
,
2531 "Describe what symbol is at location ADDR.\n\
2532 Only for symbols with fixed locations (global or static scope).");
2534 add_com ("x", class_vars
, x_command
,
2535 concat ("Examine memory: x/FMT ADDRESS.\n\
2536 ADDRESS is an expression for the memory address to examine.\n\
2537 FMT is a repeat count followed by a format letter and a size letter.\n\
2538 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2539 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
2540 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2541 The specified number of objects of the specified size are printed\n\
2542 according to the format.\n\n\
2543 Defaults for format and size letters are those previously used.\n\
2544 Default count is 1. Default address is following last thing printed\n\
2545 with this command or \"print\".", NULL
));
2547 add_com ("disassemble", class_vars
, disassemble_command
,
2548 "Disassemble a specified section of memory.\n\
2549 Default is the function surrounding the pc of the selected frame.\n\
2550 With a single argument, the function surrounding that address is dumped.\n\
2551 Two arguments are taken as a range of memory to dump.");
2553 add_com_alias ("va", "disassemble", class_xdb
, 0);
2556 add_com ("whereis", class_vars
, whereis_command
,
2557 "Print line number and file of definition of variable.");
2560 add_info ("display", display_info
,
2561 "Expressions to display when program stops, with code numbers.");
2563 add_cmd ("undisplay", class_vars
, undisplay_command
,
2564 "Cancel some expressions to be displayed when program stops.\n\
2565 Arguments are the code numbers of the expressions to stop displaying.\n\
2566 No argument means cancel all automatic-display expressions.\n\
2567 \"delete display\" has the same effect as this command.\n\
2568 Do \"info display\" to see current list of code numbers.",
2571 add_com ("display", class_vars
, display_command
,
2572 "Print value of expression EXP each time the program stops.\n\
2573 /FMT may be used before EXP as in the \"print\" command.\n\
2574 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2575 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2576 and examining is done as in the \"x\" command.\n\n\
2577 With no argument, display all currently requested auto-display expressions.\n\
2578 Use \"undisplay\" to cancel display requests previously made."
2581 add_cmd ("display", class_vars
, enable_display
,
2582 "Enable some expressions to be displayed when program stops.\n\
2583 Arguments are the code numbers of the expressions to resume displaying.\n\
2584 No argument means enable all automatic-display expressions.\n\
2585 Do \"info display\" to see current list of code numbers.", &enablelist
);
2587 add_cmd ("display", class_vars
, disable_display_command
,
2588 "Disable some expressions to be displayed when program stops.\n\
2589 Arguments are the code numbers of the expressions to stop displaying.\n\
2590 No argument means disable all automatic-display expressions.\n\
2591 Do \"info display\" to see current list of code numbers.", &disablelist
);
2593 add_cmd ("display", class_vars
, undisplay_command
,
2594 "Cancel some expressions to be displayed when program stops.\n\
2595 Arguments are the code numbers of the expressions to stop displaying.\n\
2596 No argument means cancel all automatic-display expressions.\n\
2597 Do \"info display\" to see current list of code numbers.", &deletelist
);
2599 add_com ("printf", class_vars
, printf_command
,
2600 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2601 This is useful for formatted output in user-defined commands.");
2603 add_com ("output", class_vars
, output_command
,
2604 "Like \"print\" but don't put in value history and don't print newline.\n\
2605 This is useful in user-defined commands.");
2607 add_prefix_cmd ("set", class_vars
, set_command
,
2608 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2609 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2610 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2611 with $), a register (a few standard names starting with $), or an actual\n\
2612 variable in the program being debugged. EXP is any valid expression.\n",
2613 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2614 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2615 You can see these environment settings with the \"show\" command.", NULL
),
2616 &setlist
, "set ", 1, &cmdlist
);
2618 add_com ("assign", class_vars
, set_command
, concat ("Evaluate expression \
2619 EXP and assign result to variable VAR, using assignment\n\
2620 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2621 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2622 with $), a register (a few standard names starting with $), or an actual\n\
2623 variable in the program being debugged. EXP is any valid expression.\n",
2624 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2625 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2626 You can see these environment settings with the \"show\" command.", NULL
));
2628 /* "call" is the same as "set", but handy for dbx users to call fns. */
2629 add_com ("call", class_vars
, call_command
,
2630 "Call a function in the program.\n\
2631 The argument is the function name and arguments, in the notation of the\n\
2632 current working language. The result is printed and saved in the value\n\
2633 history, if it is not void.");
2635 add_cmd ("variable", class_vars
, set_command
,
2636 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2637 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2638 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2639 with $), a register (a few standard names starting with $), or an actual\n\
2640 variable in the program being debugged. EXP is any valid expression.\n\
2641 This may usually be abbreviated to simply \"set\".",
2644 add_com ("print", class_vars
, print_command
,
2645 concat ("Print value of expression EXP.\n\
2646 Variables accessible are those of the lexical environment of the selected\n\
2647 stack frame, plus all those whose scope is global or an entire file.\n\
2649 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2650 $$NUM refers to NUM'th value back from the last one.\n\
2651 Names starting with $ refer to registers (with the values they would have\n",
2652 "if the program were to return to the stack frame now selected, restoring\n\
2653 all registers saved by frames farther in) or else to debugger\n\
2654 \"convenience\" variables (any such name not a known register).\n\
2655 Use assignment expressions to give values to convenience variables.\n",
2657 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2658 @ is a binary operator for treating consecutive data objects\n\
2659 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2660 element is FOO, whose second element is stored in the space following\n\
2661 where FOO is stored, etc. FOO must be an expression whose value\n\
2662 resides in memory.\n",
2664 EXP may be preceded with /FMT, where FMT is a format letter\n\
2665 but no count or size letter (see \"x\" command).", NULL
));
2666 add_com_alias ("p", "print", class_vars
, 1);
2668 add_com ("inspect", class_vars
, inspect_command
,
2669 "Same as \"print\" command, except that if you are running in the epoch\n\
2670 environment, the value is printed in its own window.");
2673 add_set_cmd ("max-symbolic-offset", no_class
, var_uinteger
,
2674 (char *) &max_symbolic_offset
,
2675 "Set the largest offset that will be printed in <symbol+1234> form.",
2679 add_set_cmd ("symbol-filename", no_class
, var_boolean
,
2680 (char *) &print_symbol_filename
,
2681 "Set printing of source filename and line number with <symbol>.",
2685 /* For examine/instruction a single byte quantity is specified as
2686 the data. This avoids problems with value_at_lazy() requiring a
2687 valid data type (and rejecting VOID). */
2688 examine_i_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_i_type", NULL
);
2690 examine_b_type
= init_type (TYPE_CODE_INT
, 1, 0, "examine_b_type", NULL
);
2691 examine_h_type
= init_type (TYPE_CODE_INT
, 2, 0, "examine_h_type", NULL
);
2692 examine_w_type
= init_type (TYPE_CODE_INT
, 4, 0, "examine_w_type", NULL
);
2693 examine_g_type
= init_type (TYPE_CODE_INT
, 8, 0, "examine_g_type", NULL
);