1 /* Print values for GNU debugger GDB.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1993, 1994, 1995,
4 1998, 2000 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
24 #include "gdb_string.h"
30 #include "expression.h"
34 #include "breakpoint.h"
38 #include "symfile.h" /* for overlay functions */
39 #include "objfiles.h" /* ditto */
44 extern int asm_demangle; /* Whether to demangle syms in asm printouts */
45 extern int addressprint; /* Whether to print hex addresses in HLL " */
54 /* Last specified output format. */
56 static char last_format = 'x';
58 /* Last specified examination size. 'b', 'h', 'w' or `q'. */
60 static char last_size = 'w';
62 /* Default address to examine next. */
64 static CORE_ADDR next_address;
66 /* Default section to examine next. */
68 static asection *next_section;
70 /* Last address examined. */
72 static CORE_ADDR last_examine_address;
74 /* Contents of last address examined.
75 This is not valid past the end of the `x' command! */
77 static value_ptr last_examine_value;
79 /* Largest offset between a symbolic value and an address, that will be
80 printed as `0x1234 <symbol+offset>'. */
82 static unsigned int max_symbolic_offset = UINT_MAX;
84 /* Append the source filename and linenumber of the symbol when
85 printing a symbolic value as `<symbol at filename:linenum>' if set. */
86 static int print_symbol_filename = 0;
88 /* Number of auto-display expression currently being displayed.
89 So that we can disable it if we get an error or a signal within it.
90 -1 when not doing one. */
92 int current_display_number;
94 /* Flag to low-level print routines that this value is being printed
95 in an epoch window. We'd like to pass this as a parameter, but
96 every routine would need to take it. Perhaps we can encapsulate
97 this in the I/O stream once we have GNU stdio. */
103 /* Chain link to next auto-display item. */
104 struct display *next;
105 /* Expression to be evaluated and displayed. */
106 struct expression *exp;
107 /* Item number of this auto-display item. */
109 /* Display format specified. */
110 struct format_data format;
111 /* Innermost block required by this expression when evaluated */
113 /* Status of this display (enabled or disabled) */
117 /* Chain of expressions whose values should be displayed
118 automatically each time the program stops. */
120 static struct display *display_chain;
122 static int display_number;
124 /* Prototypes for exported functions. */
126 void output_command (char *, int);
128 void _initialize_printcmd (void);
130 /* Prototypes for local functions. */
132 static void delete_display (int);
134 static void enable_display (char *, int);
136 static void disable_display_command (char *, int);
138 static void disassemble_command (char *, int);
140 static void printf_command (char *, int);
142 static void print_frame_nameless_args (struct frame_info *, long,
143 int, int, struct ui_file *);
145 static void display_info (char *, int);
147 static void do_one_display (struct display *);
149 static void undisplay_command (char *, int);
151 static void free_display (struct display *);
153 static void display_command (char *, int);
155 void x_command (char *, int);
157 static void address_info (char *, int);
159 static void set_command (char *, int);
161 static void call_command (char *, int);
163 static void inspect_command (char *, int);
165 static void print_command (char *, int);
167 static void print_command_1 (char *, int, int);
169 static void validate_format (struct format_data, char *);
171 static void do_examine (struct format_data, CORE_ADDR addr,
174 static void print_formatted (value_ptr, int, int, struct ui_file *);
176 static struct format_data decode_format (char **, int, int);
178 static int print_insn (CORE_ADDR, struct ui_file *);
180 static void sym_info (char *, int);
183 /* Decode a format specification. *STRING_PTR should point to it.
184 OFORMAT and OSIZE are used as defaults for the format and size
185 if none are given in the format specification.
186 If OSIZE is zero, then the size field of the returned value
187 should be set only if a size is explicitly specified by the
189 The structure returned describes all the data
190 found in the specification. In addition, *STRING_PTR is advanced
191 past the specification and past all whitespace following it. */
193 static struct format_data
194 decode_format (char **string_ptr, int oformat, int osize)
196 struct format_data val;
197 register char *p = *string_ptr;
203 if (*p >= '0' && *p <= '9')
204 val.count = atoi (p);
205 while (*p >= '0' && *p <= '9')
208 /* Now process size or format letters that follow. */
212 if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g')
214 else if (*p >= 'a' && *p <= 'z')
220 while (*p == ' ' || *p == '\t')
224 /* Set defaults for format and size if not specified. */
225 if (val.format == '?')
229 /* Neither has been specified. */
230 val.format = oformat;
234 /* If a size is specified, any format makes a reasonable
235 default except 'i'. */
236 val.format = oformat == 'i' ? 'x' : oformat;
238 else if (val.size == '?')
243 /* Pick the appropriate size for an address. */
244 if (TARGET_PTR_BIT == 64)
245 val.size = osize ? 'g' : osize;
246 else if (TARGET_PTR_BIT == 32)
247 val.size = osize ? 'w' : osize;
248 else if (TARGET_PTR_BIT == 16)
249 val.size = osize ? 'h' : osize;
251 /* Bad value for TARGET_PTR_BIT */
255 /* Floating point has to be word or giantword. */
256 if (osize == 'w' || osize == 'g')
259 /* Default it to giantword if the last used size is not
261 val.size = osize ? 'g' : osize;
264 /* Characters default to one byte. */
265 val.size = osize ? 'b' : osize;
268 /* The default is the size most recently specified. */
275 /* Print value VAL on stream according to FORMAT, a letter or 0.
276 Do not end with a newline.
277 0 means print VAL according to its own type.
278 SIZE is the letter for the size of datum being printed.
279 This is used to pad hex numbers so they line up. */
282 print_formatted (register value_ptr val, register int format, int size,
283 struct ui_file *stream)
285 struct type *type = check_typedef (VALUE_TYPE (val));
286 int len = TYPE_LENGTH (type);
288 if (VALUE_LVAL (val) == lval_memory)
290 next_address = VALUE_ADDRESS (val) + len;
291 next_section = VALUE_BFD_SECTION (val);
297 /* FIXME: Need to handle wchar_t's here... */
298 next_address = VALUE_ADDRESS (val)
299 + val_print_string (VALUE_ADDRESS (val), -1, 1, stream);
300 next_section = VALUE_BFD_SECTION (val);
304 /* The old comment says
305 "Force output out, print_insn not using _filtered".
306 I'm not completely sure what that means, I suspect most print_insn
307 now do use _filtered, so I guess it's obsolete.
308 --Yes, it does filter now, and so this is obsolete. -JB */
310 /* We often wrap here if there are long symbolic names. */
312 next_address = VALUE_ADDRESS (val)
313 + print_insn (VALUE_ADDRESS (val), stream);
314 next_section = VALUE_BFD_SECTION (val);
319 || TYPE_CODE (type) == TYPE_CODE_ARRAY
320 || TYPE_CODE (type) == TYPE_CODE_STRING
321 || TYPE_CODE (type) == TYPE_CODE_STRUCT
322 || TYPE_CODE (type) == TYPE_CODE_UNION)
323 /* If format is 0, use the 'natural' format for
324 * that type of value. If the type is non-scalar,
325 * we have to use language rules to print it as
326 * a series of scalars.
328 value_print (val, stream, format, Val_pretty_default);
330 /* User specified format, so don't look to the
331 * the type to tell us what to do.
333 print_scalar_formatted (VALUE_CONTENTS (val), type,
334 format, size, stream);
338 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
339 according to letters FORMAT and SIZE on STREAM.
340 FORMAT may not be zero. Formats s and i are not supported at this level.
342 This is how the elements of an array or structure are printed
346 print_scalar_formatted (char *valaddr, struct type *type, int format, int size,
347 struct ui_file *stream)
350 unsigned int len = TYPE_LENGTH (type);
352 if (len > sizeof (LONGEST)
360 if (!TYPE_UNSIGNED (type)
361 || !extract_long_unsigned_integer (valaddr, len, &val_long))
363 /* We can't print it normally, but we can print it in hex.
364 Printing it in the wrong radix is more useful than saying
365 "use /x, you dummy". */
366 /* FIXME: we could also do octal or binary if that was the
368 /* FIXME: we should be using the size field to give us a
369 minimum field width to print. */
372 print_octal_chars (stream, valaddr, len);
373 else if (format == 'd')
374 print_decimal_chars (stream, valaddr, len);
375 else if (format == 't')
376 print_binary_chars (stream, valaddr, len);
378 /* replace with call to print_hex_chars? Looks
379 like val_print_type_code_int is redoing
382 val_print_type_code_int (type, valaddr, stream);
387 /* If we get here, extract_long_unsigned_integer set val_long. */
389 else if (format != 'f')
390 val_long = unpack_long (type, valaddr);
392 /* If we are printing it as unsigned, truncate it in case it is actually
393 a negative signed value (e.g. "print/u (short)-1" should print 65535
394 (if shorts are 16 bits) instead of 4294967295). */
397 if (len < sizeof (LONGEST))
398 val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1;
406 /* no size specified, like in print. Print varying # of digits. */
407 print_longest (stream, 'x', 1, val_long);
416 print_longest (stream, size, 1, val_long);
419 error ("Undefined output size \"%c\".", size);
424 print_longest (stream, 'd', 1, val_long);
428 print_longest (stream, 'u', 0, val_long);
433 print_longest (stream, 'o', 1, val_long);
435 fprintf_filtered (stream, "0");
440 CORE_ADDR addr = unpack_pointer (type, valaddr);
441 print_address (addr, stream);
446 value_print (value_from_longest (builtin_type_true_char, val_long),
447 stream, 0, Val_pretty_default);
451 if (len == sizeof (float))
452 type = builtin_type_float;
453 else if (len == sizeof (double))
454 type = builtin_type_double;
455 print_floating (valaddr, type, stream);
462 /* Binary; 't' stands for "two". */
464 char bits[8 * (sizeof val_long) + 1];
465 char buf[8 * (sizeof val_long) + 32];
470 width = 8 * (sizeof val_long);
487 error ("Undefined output size \"%c\".", size);
493 bits[width] = (val_long & 1) ? '1' : '0';
498 while (*cp && *cp == '0')
503 strcpy (buf, local_binary_format_prefix ());
505 strcat (buf, local_binary_format_suffix ());
506 fprintf_filtered (stream, buf);
511 error ("Undefined output format \"%c\".", format);
515 /* Specify default address for `x' command.
516 `info lines' uses this. */
519 set_next_address (CORE_ADDR addr)
523 /* Make address available to the user as $_. */
524 set_internalvar (lookup_internalvar ("_"),
525 value_from_pointer (lookup_pointer_type (builtin_type_void),
529 /* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
530 after LEADIN. Print nothing if no symbolic name is found nearby.
531 Optionally also print source file and line number, if available.
532 DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
533 or to interpret it as a possible C++ name and convert it back to source
534 form. However note that DO_DEMANGLE can be overridden by the specific
535 settings of the demangle and asm_demangle variables. */
538 print_address_symbolic (CORE_ADDR addr, struct ui_file *stream, int do_demangle,
542 char *filename = NULL;
547 /* throw away both name and filename */
548 struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name);
549 make_cleanup (free_current_contents, &filename);
551 if (build_address_symbolic (addr, do_demangle, &name, &offset, &filename, &line, &unmapped))
553 do_cleanups (cleanup_chain);
557 fputs_filtered (leadin, stream);
559 fputs_filtered ("<*", stream);
561 fputs_filtered ("<", stream);
562 fputs_filtered (name, stream);
564 fprintf_filtered (stream, "+%u", (unsigned int) offset);
566 /* Append source filename and line number if desired. Give specific
567 line # of this addr, if we have it; else line # of the nearest symbol. */
568 if (print_symbol_filename && filename != NULL)
571 fprintf_filtered (stream, " at %s:%d", filename, line);
573 fprintf_filtered (stream, " in %s", filename);
576 fputs_filtered ("*>", stream);
578 fputs_filtered (">", stream);
580 do_cleanups (cleanup_chain);
583 /* Given an address ADDR return all the elements needed to print the
584 address in a symbolic form. NAME can be mangled or not depending
585 on DO_DEMANGLE (and also on the asm_demangle global variable,
586 manipulated via ''set print asm-demangle''). Return 0 in case of
587 success, when all the info in the OUT paramters is valid. Return 1
590 build_address_symbolic (CORE_ADDR addr, /* IN */
591 int do_demangle, /* IN */
592 char **name, /* OUT */
593 int *offset, /* OUT */
594 char **filename, /* OUT */
596 int *unmapped) /* OUT */
598 struct minimal_symbol *msymbol;
599 struct symbol *symbol;
600 struct symtab *symtab = 0;
601 CORE_ADDR name_location = 0;
602 asection *section = 0;
603 char *name_temp = "";
605 /* Let's say it is unmapped. */
608 /* Determine if the address is in an overlay, and whether it is
610 if (overlay_debugging)
612 section = find_pc_overlay (addr);
613 if (pc_in_unmapped_range (addr, section))
616 addr = overlay_mapped_address (addr, section);
620 /* On some targets, add in extra "flag" bits to PC for
621 disassembly. This should ensure that "rounding errors" in
622 symbol addresses that are masked for disassembly favour the
623 the correct symbol. */
625 #ifdef GDB_TARGET_UNMASK_DISAS_PC
626 addr = GDB_TARGET_UNMASK_DISAS_PC (addr);
629 /* First try to find the address in the symbol table, then
630 in the minsyms. Take the closest one. */
632 /* This is defective in the sense that it only finds text symbols. So
633 really this is kind of pointless--we should make sure that the
634 minimal symbols have everything we need (by changing that we could
635 save some memory, but for many debug format--ELF/DWARF or
636 anything/stabs--it would be inconvenient to eliminate those minimal
638 msymbol = lookup_minimal_symbol_by_pc_section (addr, section);
639 symbol = find_pc_sect_function (addr, section);
643 name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol));
645 name_temp = SYMBOL_SOURCE_NAME (symbol);
647 name_temp = SYMBOL_LINKAGE_NAME (symbol);
652 if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL)
654 /* The msymbol is closer to the address than the symbol;
655 use the msymbol instead. */
658 name_location = SYMBOL_VALUE_ADDRESS (msymbol);
660 name_temp = SYMBOL_SOURCE_NAME (msymbol);
662 name_temp = SYMBOL_LINKAGE_NAME (msymbol);
665 if (symbol == NULL && msymbol == NULL)
668 /* On some targets, mask out extra "flag" bits from PC for handsome
671 #ifdef GDB_TARGET_MASK_DISAS_PC
672 name_location = GDB_TARGET_MASK_DISAS_PC (name_location);
673 addr = GDB_TARGET_MASK_DISAS_PC (addr);
676 /* If the nearest symbol is too far away, don't print anything symbolic. */
678 /* For when CORE_ADDR is larger than unsigned int, we do math in
679 CORE_ADDR. But when we detect unsigned wraparound in the
680 CORE_ADDR math, we ignore this test and print the offset,
681 because addr+max_symbolic_offset has wrapped through the end
682 of the address space back to the beginning, giving bogus comparison. */
683 if (addr > name_location + max_symbolic_offset
684 && name_location + max_symbolic_offset > name_location)
687 *offset = addr - name_location;
689 *name = xstrdup (name_temp);
691 if (print_symbol_filename)
693 struct symtab_and_line sal;
695 sal = find_pc_sect_line (addr, section, 0);
699 *filename = xstrdup (sal.symtab->filename);
702 else if (symtab && symbol && symbol->line)
704 *filename = xstrdup (symtab->filename);
705 *line = symbol->line;
709 *filename = xstrdup (symtab->filename);
716 /* Print address ADDR on STREAM. USE_LOCAL means the same thing as for
719 print_address_numeric (CORE_ADDR addr, int use_local, struct ui_file *stream)
721 /* Truncate address to the size of a target pointer, avoiding shifts
722 larger or equal than the width of a CORE_ADDR. The local
723 variable PTR_BIT stops the compiler reporting a shift overflow
724 when it won't occure. */
725 /* NOTE: This assumes that the significant address information is
726 kept in the least significant bits of ADDR - the upper bits were
727 either zero or sign extended. Should ADDRESS_TO_POINTER() or
728 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
729 int addr_bit = TARGET_ADDR_BIT;
730 if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))
731 addr &= ((CORE_ADDR) 1 << addr_bit) - 1;
732 print_longest (stream, 'x', use_local, (ULONGEST) addr);
735 /* Print address ADDR symbolically on STREAM.
736 First print it as a number. Then perhaps print
737 <SYMBOL + OFFSET> after the number. */
740 print_address (CORE_ADDR addr, struct ui_file *stream)
742 print_address_numeric (addr, 1, stream);
743 print_address_symbolic (addr, stream, asm_demangle, " ");
746 /* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
747 controls whether to print the symbolic name "raw" or demangled.
748 Global setting "addressprint" controls whether to print hex address
752 print_address_demangle (CORE_ADDR addr, struct ui_file *stream, int do_demangle)
756 fprintf_filtered (stream, "0");
758 else if (addressprint)
760 print_address_numeric (addr, 1, stream);
761 print_address_symbolic (addr, stream, do_demangle, " ");
765 print_address_symbolic (addr, stream, do_demangle, "");
770 /* These are the types that $__ will get after an examine command of one
773 static struct type *examine_i_type;
775 static struct type *examine_b_type;
776 static struct type *examine_h_type;
777 static struct type *examine_w_type;
778 static struct type *examine_g_type;
780 /* Examine data at address ADDR in format FMT.
781 Fetch it from memory and print on gdb_stdout. */
784 do_examine (struct format_data fmt, CORE_ADDR addr, asection *sect)
786 register char format = 0;
788 register int count = 1;
789 struct type *val_type = NULL;
791 register int maxelts;
799 /* String or instruction format implies fetch single bytes
800 regardless of the specified size. */
801 if (format == 's' || format == 'i')
805 val_type = examine_i_type;
806 else if (size == 'b')
807 val_type = examine_b_type;
808 else if (size == 'h')
809 val_type = examine_h_type;
810 else if (size == 'w')
811 val_type = examine_w_type;
812 else if (size == 'g')
813 val_type = examine_g_type;
820 if (format == 's' || format == 'i')
823 /* Print as many objects as specified in COUNT, at most maxelts per line,
824 with the address of the next one at the start of each line. */
829 print_address (next_address, gdb_stdout);
830 printf_filtered (":");
835 printf_filtered ("\t");
836 /* Note that print_formatted sets next_address for the next
838 last_examine_address = next_address;
840 if (last_examine_value)
841 value_free (last_examine_value);
843 /* The value to be displayed is not fetched greedily.
844 Instead, to avoid the posibility of a fetched value not
845 being used, its retreval is delayed until the print code
846 uses it. When examining an instruction stream, the
847 disassembler will perform its own memory fetch using just
848 the address stored in LAST_EXAMINE_VALUE. FIXME: Should
849 the disassembler be modified so that LAST_EXAMINE_VALUE
850 is left with the byte sequence from the last complete
851 instruction fetched from memory? */
852 last_examine_value = value_at_lazy (val_type, next_address, sect);
854 if (last_examine_value)
855 release_value (last_examine_value);
857 print_formatted (last_examine_value, format, size, gdb_stdout);
859 printf_filtered ("\n");
860 gdb_flush (gdb_stdout);
865 validate_format (struct format_data fmt, char *cmdname)
868 error ("Size letters are meaningless in \"%s\" command.", cmdname);
870 error ("Item count other than 1 is meaningless in \"%s\" command.",
872 if (fmt.format == 'i' || fmt.format == 's')
873 error ("Format letter \"%c\" is meaningless in \"%s\" command.",
874 fmt.format, cmdname);
877 /* Evaluate string EXP as an expression in the current language and
878 print the resulting value. EXP may contain a format specifier as the
879 first argument ("/x myvar" for example, to print myvar in hex).
883 print_command_1 (char *exp, int inspect, int voidprint)
885 struct expression *expr;
886 register struct cleanup *old_chain = 0;
887 register char format = 0;
888 register value_ptr val;
889 struct format_data fmt;
892 /* Pass inspect flag to the rest of the print routines in a global (sigh). */
893 inspect_it = inspect;
895 if (exp && *exp == '/')
898 fmt = decode_format (&exp, last_format, 0);
899 validate_format (fmt, "print");
900 last_format = format = fmt.format;
912 expr = parse_expression (exp);
913 old_chain = make_cleanup (free_current_contents, &expr);
915 val = evaluate_expression (expr);
917 /* C++: figure out what type we actually want to print it as. */
918 type = VALUE_TYPE (val);
921 && (TYPE_CODE (type) == TYPE_CODE_PTR
922 || TYPE_CODE (type) == TYPE_CODE_REF)
923 && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT
924 || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_UNION))
928 v = value_from_vtable_info (val, TYPE_TARGET_TYPE (type));
932 type = VALUE_TYPE (val);
937 val = access_value_history (0);
939 if (voidprint || (val && VALUE_TYPE (val) &&
940 TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID))
942 int histindex = record_latest_value (val);
945 annotate_value_history_begin (histindex, VALUE_TYPE (val));
947 annotate_value_begin (VALUE_TYPE (val));
950 printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex);
951 else if (histindex >= 0)
952 printf_filtered ("$%d = ", histindex);
955 annotate_value_history_value ();
957 print_formatted (val, format, fmt.size, gdb_stdout);
958 printf_filtered ("\n");
961 annotate_value_history_end ();
963 annotate_value_end ();
966 printf_unfiltered ("\") )\030");
970 do_cleanups (old_chain);
971 inspect_it = 0; /* Reset print routines to normal */
976 print_command (char *exp, int from_tty)
978 print_command_1 (exp, 0, 1);
981 /* Same as print, except in epoch, it gets its own window */
984 inspect_command (char *exp, int from_tty)
986 extern int epoch_interface;
988 print_command_1 (exp, epoch_interface, 1);
991 /* Same as print, except it doesn't print void results. */
994 call_command (char *exp, int from_tty)
996 print_command_1 (exp, 0, 0);
1001 output_command (char *exp, int from_tty)
1003 struct expression *expr;
1004 register struct cleanup *old_chain;
1005 register char format = 0;
1006 register value_ptr val;
1007 struct format_data fmt;
1009 if (exp && *exp == '/')
1012 fmt = decode_format (&exp, 0, 0);
1013 validate_format (fmt, "output");
1014 format = fmt.format;
1017 expr = parse_expression (exp);
1018 old_chain = make_cleanup (free_current_contents, &expr);
1020 val = evaluate_expression (expr);
1022 annotate_value_begin (VALUE_TYPE (val));
1024 print_formatted (val, format, fmt.size, gdb_stdout);
1026 annotate_value_end ();
1029 gdb_flush (gdb_stdout);
1031 do_cleanups (old_chain);
1036 set_command (char *exp, int from_tty)
1038 struct expression *expr = parse_expression (exp);
1039 register struct cleanup *old_chain =
1040 make_cleanup (free_current_contents, &expr);
1041 evaluate_expression (expr);
1042 do_cleanups (old_chain);
1047 sym_info (char *arg, int from_tty)
1049 struct minimal_symbol *msymbol;
1050 struct objfile *objfile;
1051 struct obj_section *osect;
1053 CORE_ADDR addr, sect_addr;
1055 unsigned int offset;
1058 error_no_arg ("address");
1060 addr = parse_and_eval_address (arg);
1061 ALL_OBJSECTIONS (objfile, osect)
1063 sect = osect->the_bfd_section;
1064 sect_addr = overlay_mapped_address (addr, sect);
1066 if (osect->addr <= sect_addr && sect_addr < osect->endaddr &&
1067 (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, sect)))
1070 offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol);
1072 printf_filtered ("%s + %u in ",
1073 SYMBOL_SOURCE_NAME (msymbol), offset);
1075 printf_filtered ("%s in ",
1076 SYMBOL_SOURCE_NAME (msymbol));
1077 if (pc_in_unmapped_range (addr, sect))
1078 printf_filtered ("load address range of ");
1079 if (section_is_overlay (sect))
1080 printf_filtered ("%s overlay ",
1081 section_is_mapped (sect) ? "mapped" : "unmapped");
1082 printf_filtered ("section %s", sect->name);
1083 printf_filtered ("\n");
1087 printf_filtered ("No symbol matches %s.\n", arg);
1092 address_info (char *exp, int from_tty)
1094 register struct symbol *sym;
1095 register struct minimal_symbol *msymbol;
1097 register long basereg;
1099 CORE_ADDR load_addr;
1100 int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero
1101 if exp is a field of `this'. */
1104 error ("Argument required.");
1106 sym = lookup_symbol (exp, get_selected_block (), VAR_NAMESPACE,
1107 &is_a_field_of_this, (struct symtab **) NULL);
1110 if (is_a_field_of_this)
1112 printf_filtered ("Symbol \"");
1113 fprintf_symbol_filtered (gdb_stdout, exp,
1114 current_language->la_language, DMGL_ANSI);
1115 printf_filtered ("\" is a field of the local class variable `this'\n");
1119 msymbol = lookup_minimal_symbol (exp, NULL, NULL);
1121 if (msymbol != NULL)
1123 load_addr = SYMBOL_VALUE_ADDRESS (msymbol);
1125 printf_filtered ("Symbol \"");
1126 fprintf_symbol_filtered (gdb_stdout, exp,
1127 current_language->la_language, DMGL_ANSI);
1128 printf_filtered ("\" is at ");
1129 print_address_numeric (load_addr, 1, gdb_stdout);
1130 printf_filtered (" in a file compiled without debugging");
1131 section = SYMBOL_BFD_SECTION (msymbol);
1132 if (section_is_overlay (section))
1134 load_addr = overlay_unmapped_address (load_addr, section);
1135 printf_filtered (",\n -- loaded at ");
1136 print_address_numeric (load_addr, 1, gdb_stdout);
1137 printf_filtered (" in overlay section %s", section->name);
1139 printf_filtered (".\n");
1142 error ("No symbol \"%s\" in current context.", exp);
1146 printf_filtered ("Symbol \"");
1147 fprintf_symbol_filtered (gdb_stdout, SYMBOL_NAME (sym),
1148 current_language->la_language, DMGL_ANSI);
1149 printf_filtered ("\" is ");
1150 val = SYMBOL_VALUE (sym);
1151 basereg = SYMBOL_BASEREG (sym);
1152 section = SYMBOL_BFD_SECTION (sym);
1154 switch (SYMBOL_CLASS (sym))
1157 case LOC_CONST_BYTES:
1158 printf_filtered ("constant");
1162 printf_filtered ("a label at address ");
1163 print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym),
1165 if (section_is_overlay (section))
1167 load_addr = overlay_unmapped_address (load_addr, section);
1168 printf_filtered (",\n -- loaded at ");
1169 print_address_numeric (load_addr, 1, gdb_stdout);
1170 printf_filtered (" in overlay section %s", section->name);
1175 printf_filtered ("a variable in register %s", REGISTER_NAME (val));
1179 printf_filtered ("static storage at address ");
1180 print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym),
1182 if (section_is_overlay (section))
1184 load_addr = overlay_unmapped_address (load_addr, section);
1185 printf_filtered (",\n -- loaded at ");
1186 print_address_numeric (load_addr, 1, gdb_stdout);
1187 printf_filtered (" in overlay section %s", section->name);
1192 printf_filtered ("external global (indirect addressing), at address *(");
1193 print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (sym),
1195 printf_filtered (")");
1196 if (section_is_overlay (section))
1198 load_addr = overlay_unmapped_address (load_addr, section);
1199 printf_filtered (",\n -- loaded at ");
1200 print_address_numeric (load_addr, 1, gdb_stdout);
1201 printf_filtered (" in overlay section %s", section->name);
1206 printf_filtered ("an argument in register %s", REGISTER_NAME (val));
1209 case LOC_REGPARM_ADDR:
1210 printf_filtered ("address of an argument in register %s", REGISTER_NAME (val));
1214 printf_filtered ("an argument at offset %ld", val);
1218 printf_filtered ("an argument at frame offset %ld", val);
1222 printf_filtered ("a local variable at frame offset %ld", val);
1226 printf_filtered ("a reference argument at offset %ld", val);
1230 printf_filtered ("a variable at offset %ld from register %s",
1231 val, REGISTER_NAME (basereg));
1234 case LOC_BASEREG_ARG:
1235 printf_filtered ("an argument at offset %ld from register %s",
1236 val, REGISTER_NAME (basereg));
1240 printf_filtered ("a typedef");
1244 printf_filtered ("a function at address ");
1245 #ifdef GDB_TARGET_MASK_DISAS_PC
1246 print_address_numeric
1247 (load_addr = GDB_TARGET_MASK_DISAS_PC (BLOCK_START (SYMBOL_BLOCK_VALUE (sym))),
1250 print_address_numeric (load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)),
1253 if (section_is_overlay (section))
1255 load_addr = overlay_unmapped_address (load_addr, section);
1256 printf_filtered (",\n -- loaded at ");
1257 print_address_numeric (load_addr, 1, gdb_stdout);
1258 printf_filtered (" in overlay section %s", section->name);
1262 case LOC_UNRESOLVED:
1264 struct minimal_symbol *msym;
1266 msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, NULL);
1268 printf_filtered ("unresolved");
1271 section = SYMBOL_BFD_SECTION (msym);
1272 printf_filtered ("static storage at address ");
1273 print_address_numeric (load_addr = SYMBOL_VALUE_ADDRESS (msym),
1275 if (section_is_overlay (section))
1277 load_addr = overlay_unmapped_address (load_addr, section);
1278 printf_filtered (",\n -- loaded at ");
1279 print_address_numeric (load_addr, 1, gdb_stdout);
1280 printf_filtered (" in overlay section %s", section->name);
1286 case LOC_THREAD_LOCAL_STATIC:
1288 "a thread-local variable at offset %ld from the thread base register %s",
1289 val, REGISTER_NAME (basereg));
1292 case LOC_OPTIMIZED_OUT:
1293 printf_filtered ("optimized out");
1297 printf_filtered ("of unknown (botched) type");
1300 printf_filtered (".\n");
1304 x_command (char *exp, int from_tty)
1306 struct expression *expr;
1307 struct format_data fmt;
1308 struct cleanup *old_chain;
1311 fmt.format = last_format;
1312 fmt.size = last_size;
1315 if (exp && *exp == '/')
1318 fmt = decode_format (&exp, last_format, last_size);
1321 /* If we have an expression, evaluate it and use it as the address. */
1323 if (exp != 0 && *exp != 0)
1325 expr = parse_expression (exp);
1326 /* Cause expression not to be there any more
1327 if this command is repeated with Newline.
1328 But don't clobber a user-defined command's definition. */
1331 old_chain = make_cleanup (free_current_contents, &expr);
1332 val = evaluate_expression (expr);
1333 if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF)
1334 val = value_ind (val);
1335 /* In rvalue contexts, such as this, functions are coerced into
1336 pointers to functions. This makes "x/i main" work. */
1337 if ( /* last_format == 'i'
1338 && */ TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC
1339 && VALUE_LVAL (val) == lval_memory)
1340 next_address = VALUE_ADDRESS (val);
1342 next_address = value_as_pointer (val);
1343 if (VALUE_BFD_SECTION (val))
1344 next_section = VALUE_BFD_SECTION (val);
1345 do_cleanups (old_chain);
1348 do_examine (fmt, next_address, next_section);
1350 /* If the examine succeeds, we remember its size and format for next time. */
1351 last_size = fmt.size;
1352 last_format = fmt.format;
1354 /* Set a couple of internal variables if appropriate. */
1355 if (last_examine_value)
1357 /* Make last address examined available to the user as $_. Use
1358 the correct pointer type. */
1359 struct type *pointer_type
1360 = lookup_pointer_type (VALUE_TYPE (last_examine_value));
1361 set_internalvar (lookup_internalvar ("_"),
1362 value_from_pointer (pointer_type,
1363 last_examine_address));
1365 /* Make contents of last address examined available to the user as $__. */
1366 /* If the last value has not been fetched from memory then don't
1367 fetch it now - instead mark it by voiding the $__ variable. */
1368 if (VALUE_LAZY (last_examine_value))
1369 set_internalvar (lookup_internalvar ("__"),
1370 allocate_value (builtin_type_void));
1372 set_internalvar (lookup_internalvar ("__"), last_examine_value);
1377 /* Add an expression to the auto-display chain.
1378 Specify the expression. */
1381 display_command (char *exp, int from_tty)
1383 struct format_data fmt;
1384 register struct expression *expr;
1385 register struct display *new;
1389 if (tui_version && *exp == '$')
1390 display_it = ((TuiStatus) tuiDo (
1391 (TuiOpaqueFuncPtr) tui_vSetLayoutTo, exp) == TUI_FAILURE);
1405 fmt = decode_format (&exp, 0, 0);
1406 if (fmt.size && fmt.format == 0)
1408 if (fmt.format == 'i' || fmt.format == 's')
1418 innermost_block = 0;
1419 expr = parse_expression (exp);
1421 new = (struct display *) xmalloc (sizeof (struct display));
1424 new->block = innermost_block;
1425 new->next = display_chain;
1426 new->number = ++display_number;
1428 new->status = enabled;
1429 display_chain = new;
1431 if (from_tty && target_has_execution)
1432 do_one_display (new);
1439 free_display (struct display *d)
1441 free ((PTR) d->exp);
1445 /* Clear out the display_chain.
1446 Done when new symtabs are loaded, since this invalidates
1447 the types stored in many expressions. */
1450 clear_displays (void)
1452 register struct display *d;
1454 while ((d = display_chain) != NULL)
1456 free ((PTR) d->exp);
1457 display_chain = d->next;
1462 /* Delete the auto-display number NUM. */
1465 delete_display (int num)
1467 register struct display *d1, *d;
1470 error ("No display number %d.", num);
1472 if (display_chain->number == num)
1475 display_chain = d1->next;
1479 for (d = display_chain;; d = d->next)
1482 error ("No display number %d.", num);
1483 if (d->next->number == num)
1493 /* Delete some values from the auto-display chain.
1494 Specify the element numbers. */
1497 undisplay_command (char *args, int from_tty)
1499 register char *p = args;
1505 if (query ("Delete all auto-display expressions? "))
1514 while (*p1 >= '0' && *p1 <= '9')
1516 if (*p1 && *p1 != ' ' && *p1 != '\t')
1517 error ("Arguments must be display numbers.");
1521 delete_display (num);
1524 while (*p == ' ' || *p == '\t')
1530 /* Display a single auto-display.
1531 Do nothing if the display cannot be printed in the current context,
1532 or if the display is disabled. */
1535 do_one_display (struct display *d)
1537 int within_current_scope;
1539 if (d->status == disabled)
1543 within_current_scope = contained_in (get_selected_block (), d->block);
1545 within_current_scope = 1;
1546 if (!within_current_scope)
1549 current_display_number = d->number;
1551 annotate_display_begin ();
1552 printf_filtered ("%d", d->number);
1553 annotate_display_number_end ();
1554 printf_filtered (": ");
1560 annotate_display_format ();
1562 printf_filtered ("x/");
1563 if (d->format.count != 1)
1564 printf_filtered ("%d", d->format.count);
1565 printf_filtered ("%c", d->format.format);
1566 if (d->format.format != 'i' && d->format.format != 's')
1567 printf_filtered ("%c", d->format.size);
1568 printf_filtered (" ");
1570 annotate_display_expression ();
1572 print_expression (d->exp, gdb_stdout);
1573 annotate_display_expression_end ();
1575 if (d->format.count != 1)
1576 printf_filtered ("\n");
1578 printf_filtered (" ");
1580 val = evaluate_expression (d->exp);
1581 addr = value_as_pointer (val);
1582 if (d->format.format == 'i')
1583 addr = ADDR_BITS_REMOVE (addr);
1585 annotate_display_value ();
1587 do_examine (d->format, addr, VALUE_BFD_SECTION (val));
1591 annotate_display_format ();
1593 if (d->format.format)
1594 printf_filtered ("/%c ", d->format.format);
1596 annotate_display_expression ();
1598 print_expression (d->exp, gdb_stdout);
1599 annotate_display_expression_end ();
1601 printf_filtered (" = ");
1603 annotate_display_expression ();
1605 print_formatted (evaluate_expression (d->exp),
1606 d->format.format, d->format.size, gdb_stdout);
1607 printf_filtered ("\n");
1610 annotate_display_end ();
1612 gdb_flush (gdb_stdout);
1613 current_display_number = -1;
1616 /* Display all of the values on the auto-display chain which can be
1617 evaluated in the current scope. */
1622 register struct display *d;
1624 for (d = display_chain; d; d = d->next)
1628 /* Delete the auto-display which we were in the process of displaying.
1629 This is done when there is an error or a signal. */
1632 disable_display (int num)
1634 register struct display *d;
1636 for (d = display_chain; d; d = d->next)
1637 if (d->number == num)
1639 d->status = disabled;
1642 printf_unfiltered ("No display number %d.\n", num);
1646 disable_current_display (void)
1648 if (current_display_number >= 0)
1650 disable_display (current_display_number);
1651 fprintf_unfiltered (gdb_stderr, "Disabling display %d to avoid infinite recursion.\n",
1652 current_display_number);
1654 current_display_number = -1;
1658 display_info (char *ignore, int from_tty)
1660 register struct display *d;
1663 printf_unfiltered ("There are no auto-display expressions now.\n");
1665 printf_filtered ("Auto-display expressions now in effect:\n\
1666 Num Enb Expression\n");
1668 for (d = display_chain; d; d = d->next)
1670 printf_filtered ("%d: %c ", d->number, "ny"[(int) d->status]);
1672 printf_filtered ("/%d%c%c ", d->format.count, d->format.size,
1674 else if (d->format.format)
1675 printf_filtered ("/%c ", d->format.format);
1676 print_expression (d->exp, gdb_stdout);
1677 if (d->block && !contained_in (get_selected_block (), d->block))
1678 printf_filtered (" (cannot be evaluated in the current context)");
1679 printf_filtered ("\n");
1680 gdb_flush (gdb_stdout);
1685 enable_display (char *args, int from_tty)
1687 register char *p = args;
1690 register struct display *d;
1694 for (d = display_chain; d; d = d->next)
1695 d->status = enabled;
1701 while (*p1 >= '0' && *p1 <= '9')
1703 if (*p1 && *p1 != ' ' && *p1 != '\t')
1704 error ("Arguments must be display numbers.");
1708 for (d = display_chain; d; d = d->next)
1709 if (d->number == num)
1711 d->status = enabled;
1714 printf_unfiltered ("No display number %d.\n", num);
1717 while (*p == ' ' || *p == '\t')
1724 disable_display_command (char *args, int from_tty)
1726 register char *p = args;
1728 register struct display *d;
1732 for (d = display_chain; d; d = d->next)
1733 d->status = disabled;
1739 while (*p1 >= '0' && *p1 <= '9')
1741 if (*p1 && *p1 != ' ' && *p1 != '\t')
1742 error ("Arguments must be display numbers.");
1744 disable_display (atoi (p));
1747 while (*p == ' ' || *p == '\t')
1753 /* Print the value in stack frame FRAME of a variable
1754 specified by a struct symbol. */
1757 print_variable_value (struct symbol *var, struct frame_info *frame,
1758 struct ui_file *stream)
1760 value_ptr val = read_var_value (var, frame);
1762 value_print (val, stream, 0, Val_pretty_default);
1765 /* Print the arguments of a stack frame, given the function FUNC
1766 running in that frame (as a symbol), the info on the frame,
1767 and the number of args according to the stack frame (or -1 if unknown). */
1769 /* References here and elsewhere to "number of args according to the
1770 stack frame" appear in all cases to refer to "number of ints of args
1771 according to the stack frame". At least for VAX, i386, isi. */
1774 print_frame_args (struct symbol *func, struct frame_info *fi, int num,
1775 struct ui_file *stream)
1777 struct block *b = NULL;
1781 register struct symbol *sym;
1782 register value_ptr val;
1783 /* Offset of next stack argument beyond the one we have seen that is
1784 at the highest offset.
1785 -1 if we haven't come to a stack argument yet. */
1786 long highest_offset = -1;
1788 /* Number of ints of arguments that we have printed so far. */
1789 int args_printed = 0;
1791 struct cleanup *old_chain;
1792 struct ui_stream *stb;
1794 stb = ui_out_stream_new (uiout);
1795 old_chain = make_cleanup_ui_out_stream_delete (stb);
1800 b = SYMBOL_BLOCK_VALUE (func);
1801 nsyms = BLOCK_NSYMS (b);
1804 for (i = 0; i < nsyms; i++)
1807 sym = BLOCK_SYM (b, i);
1809 /* Keep track of the highest stack argument offset seen, and
1810 skip over any kinds of symbols we don't care about. */
1812 switch (SYMBOL_CLASS (sym))
1817 long current_offset = SYMBOL_VALUE (sym);
1818 arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym));
1820 /* Compute address of next argument by adding the size of
1821 this argument and rounding to an int boundary. */
1823 ((current_offset + arg_size + sizeof (int) - 1)
1824 & ~(sizeof (int) - 1));
1826 /* If this is the highest offset seen yet, set highest_offset. */
1827 if (highest_offset == -1
1828 || (current_offset > highest_offset))
1829 highest_offset = current_offset;
1831 /* Add the number of ints we're about to print to args_printed. */
1832 args_printed += (arg_size + sizeof (int) - 1) / sizeof (int);
1835 /* We care about types of symbols, but don't need to keep track of
1836 stack offsets in them. */
1838 case LOC_REGPARM_ADDR:
1840 case LOC_BASEREG_ARG:
1843 /* Other types of symbols we just skip over. */
1848 /* We have to look up the symbol because arguments can have
1849 two entries (one a parameter, one a local) and the one we
1850 want is the local, which lookup_symbol will find for us.
1851 This includes gcc1 (not gcc2) on the sparc when passing a
1852 small structure and gcc2 when the argument type is float
1853 and it is passed as a double and converted to float by
1854 the prologue (in the latter case the type of the LOC_ARG
1855 symbol is double and the type of the LOC_LOCAL symbol is
1857 /* But if the parameter name is null, don't try it.
1858 Null parameter names occur on the RS/6000, for traceback tables.
1859 FIXME, should we even print them? */
1861 if (*SYMBOL_NAME (sym))
1863 struct symbol *nsym;
1864 nsym = lookup_symbol
1866 b, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL);
1867 if (SYMBOL_CLASS (nsym) == LOC_REGISTER)
1869 /* There is a LOC_ARG/LOC_REGISTER pair. This means that
1870 it was passed on the stack and loaded into a register,
1871 or passed in a register and stored in a stack slot.
1872 GDB 3.x used the LOC_ARG; GDB 4.0-4.11 used the LOC_REGISTER.
1874 Reasons for using the LOC_ARG:
1875 (1) because find_saved_registers may be slow for remote
1877 (2) because registers are often re-used and stack slots
1878 rarely (never?) are. Therefore using the stack slot is
1879 much less likely to print garbage.
1881 Reasons why we might want to use the LOC_REGISTER:
1882 (1) So that the backtrace prints the same value as
1883 "print foo". I see no compelling reason why this needs
1884 to be the case; having the backtrace print the value which
1885 was passed in, and "print foo" print the value as modified
1886 within the called function, makes perfect sense to me.
1888 Additional note: It might be nice if "info args" displayed
1890 One more note: There is a case with sparc structure passing
1891 where we need to use the LOC_REGISTER, but this is dealt with
1892 by creating a single LOC_REGPARM in symbol reading. */
1894 /* Leave sym (the LOC_ARG) alone. */
1902 /* Print the current arg. */
1904 ui_out_text (uiout, ", ");
1905 ui_out_wrap_hint (uiout, " ");
1907 annotate_arg_begin ();
1909 ui_out_list_begin (uiout, NULL);
1910 fprintf_symbol_filtered (stb->stream, SYMBOL_SOURCE_NAME (sym),
1911 SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI);
1912 ui_out_field_stream (uiout, "name", stb);
1913 annotate_arg_name_end ();
1914 ui_out_text (uiout, "=");
1916 /* Print the current arg. */
1918 fprintf_filtered (stream, ", ");
1921 annotate_arg_begin ();
1923 fprintf_symbol_filtered (stream, SYMBOL_SOURCE_NAME (sym),
1924 SYMBOL_LANGUAGE (sym), DMGL_PARAMS | DMGL_ANSI);
1925 annotate_arg_name_end ();
1926 fputs_filtered ("=", stream);
1929 /* Avoid value_print because it will deref ref parameters. We just
1930 want to print their addresses. Print ??? for args whose address
1931 we do not know. We pass 2 as "recurse" to val_print because our
1932 standard indentation here is 4 spaces, and val_print indents
1933 2 for each recurse. */
1934 val = read_var_value (sym, fi);
1936 annotate_arg_value (val == NULL ? NULL : VALUE_TYPE (val));
1940 if (GDB_TARGET_IS_D10V
1941 && SYMBOL_CLASS (sym) == LOC_REGPARM && TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_PTR)
1942 TYPE_LENGTH (VALUE_TYPE (val)) = 2;
1944 val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0,
1945 VALUE_ADDRESS (val),
1946 stb->stream, 0, 0, 2, Val_no_prettyprint);
1947 ui_out_field_stream (uiout, "value", stb);
1950 ui_out_text (uiout, "???");
1952 ui_out_list_end (uiout);
1954 val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), 0,
1955 VALUE_ADDRESS (val),
1956 stream, 0, 0, 2, Val_no_prettyprint);
1959 fputs_filtered ("???", stream);
1962 annotate_arg_end ();
1967 /* Don't print nameless args in situations where we don't know
1968 enough about the stack to find them. */
1973 if (highest_offset == -1)
1974 start = FRAME_ARGS_SKIP;
1976 start = highest_offset;
1978 print_frame_nameless_args (fi, start, num - args_printed,
1982 do_cleanups (old_chain);
1983 #endif /* no UI_OUT */
1986 /* Print nameless args on STREAM.
1987 FI is the frameinfo for this frame, START is the offset
1988 of the first nameless arg, and NUM is the number of nameless args to
1989 print. FIRST is nonzero if this is the first argument (not just
1990 the first nameless arg). */
1993 print_frame_nameless_args (struct frame_info *fi, long start, int num,
1994 int first, struct ui_file *stream)
2000 for (i = 0; i < num; i++)
2003 #ifdef NAMELESS_ARG_VALUE
2004 NAMELESS_ARG_VALUE (fi, start, &arg_value);
2006 argsaddr = FRAME_ARGS_ADDRESS (fi);
2010 arg_value = read_memory_integer (argsaddr + start, sizeof (int));
2014 fprintf_filtered (stream, ", ");
2016 #ifdef PRINT_NAMELESS_INTEGER
2017 PRINT_NAMELESS_INTEGER (stream, arg_value);
2019 #ifdef PRINT_TYPELESS_INTEGER
2020 PRINT_TYPELESS_INTEGER (stream, builtin_type_int, (LONGEST) arg_value);
2022 fprintf_filtered (stream, "%ld", arg_value);
2023 #endif /* PRINT_TYPELESS_INTEGER */
2024 #endif /* PRINT_NAMELESS_INTEGER */
2026 start += sizeof (int);
2032 printf_command (char *arg, int from_tty)
2034 register char *f = NULL;
2035 register char *s = arg;
2036 char *string = NULL;
2037 value_ptr *val_args;
2039 char *current_substring;
2041 int allocated_args = 20;
2042 struct cleanup *old_cleanups;
2044 val_args = (value_ptr *) xmalloc (allocated_args * sizeof (value_ptr));
2045 old_cleanups = make_cleanup (free_current_contents, &val_args);
2048 error_no_arg ("format-control string and values to print");
2050 /* Skip white space before format string */
2051 while (*s == ' ' || *s == '\t')
2054 /* A format string should follow, enveloped in double quotes */
2056 error ("Bad format string, missing '\"'.");
2058 /* Parse the format-control string and copy it into the string STRING,
2059 processing some kinds of escape sequence. */
2061 f = string = (char *) alloca (strlen (s) + 1);
2069 error ("Bad format string, non-terminated '\"'.");
2081 *f++ = '\007'; /* Bell */
2106 /* ??? TODO: handle other escape sequences */
2107 error ("Unrecognized escape character \\%c in format string.",
2117 /* Skip over " and following space and comma. */
2120 while (*s == ' ' || *s == '\t')
2123 if (*s != ',' && *s != 0)
2124 error ("Invalid argument syntax");
2128 while (*s == ' ' || *s == '\t')
2131 /* Need extra space for the '\0's. Doubling the size is sufficient. */
2132 substrings = alloca (strlen (string) * 2);
2133 current_substring = substrings;
2136 /* Now scan the string for %-specs and see what kinds of args they want.
2137 argclass[I] classifies the %-specs so we can give printf_filtered
2138 something of the right size. */
2142 no_arg, int_arg, string_arg, double_arg, long_long_arg
2144 enum argclass *argclass;
2145 enum argclass this_argclass;
2151 argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass);
2159 while (strchr ("0123456789.hlL-+ #", *f))
2161 if (*f == 'l' || *f == 'L')
2168 this_argclass = string_arg;
2174 this_argclass = double_arg;
2178 error ("`*' not supported for precision or width in printf");
2181 error ("Format specifier `n' not supported in printf");
2184 this_argclass = no_arg;
2189 this_argclass = long_long_arg;
2191 this_argclass = int_arg;
2195 if (this_argclass != no_arg)
2197 strncpy (current_substring, last_arg, f - last_arg);
2198 current_substring += f - last_arg;
2199 *current_substring++ = '\0';
2201 argclass[nargs_wanted++] = this_argclass;
2205 /* Now, parse all arguments and evaluate them.
2206 Store the VALUEs in VAL_ARGS. */
2211 if (nargs == allocated_args)
2212 val_args = (value_ptr *) xrealloc ((char *) val_args,
2213 (allocated_args *= 2)
2214 * sizeof (value_ptr));
2216 val_args[nargs] = parse_to_comma_and_eval (&s1);
2218 /* If format string wants a float, unchecked-convert the value to
2219 floating point of the same size */
2221 if (argclass[nargs] == double_arg)
2223 struct type *type = VALUE_TYPE (val_args[nargs]);
2224 if (TYPE_LENGTH (type) == sizeof (float))
2225 VALUE_TYPE (val_args[nargs]) = builtin_type_float;
2226 if (TYPE_LENGTH (type) == sizeof (double))
2227 VALUE_TYPE (val_args[nargs]) = builtin_type_double;
2235 if (nargs != nargs_wanted)
2236 error ("Wrong number of arguments for specified format-string");
2238 /* Now actually print them. */
2239 current_substring = substrings;
2240 for (i = 0; i < nargs; i++)
2242 switch (argclass[i])
2249 tem = value_as_pointer (val_args[i]);
2251 /* This is a %s argument. Find the length of the string. */
2256 read_memory (tem + j, &c, 1);
2261 /* Copy the string contents into a string inside GDB. */
2262 str = (char *) alloca (j + 1);
2264 read_memory (tem, str, j);
2267 printf_filtered (current_substring, str);
2272 double val = value_as_double (val_args[i]);
2273 printf_filtered (current_substring, val);
2277 #if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
2279 long long val = value_as_long (val_args[i]);
2280 printf_filtered (current_substring, val);
2284 error ("long long not supported in printf");
2288 /* FIXME: there should be separate int_arg and long_arg. */
2289 long val = value_as_long (val_args[i]);
2290 printf_filtered (current_substring, val);
2293 default: /* purecov: deadcode */
2294 error ("internal error in printf_command"); /* purecov: deadcode */
2296 /* Skip to the next substring. */
2297 current_substring += strlen (current_substring) + 1;
2299 /* Print the portion of the format string after the last argument. */
2300 printf_filtered (last_arg);
2302 do_cleanups (old_cleanups);
2305 /* Dump a specified section of assembly code. With no command line
2306 arguments, this command will dump the assembly code for the
2307 function surrounding the pc value in the selected frame. With one
2308 argument, it will dump the assembly code surrounding that pc value.
2309 Two arguments are interpeted as bounds within which to dump
2314 disassemble_command (char *arg, int from_tty)
2316 CORE_ADDR low, high;
2318 CORE_ADDR pc, pc_masked;
2327 if (!selected_frame)
2328 error ("No frame selected.\n");
2330 pc = get_frame_pc (selected_frame);
2331 if (find_pc_partial_function (pc, &name, &low, &high) == 0)
2332 error ("No function contains program counter for selected frame.\n");
2334 else if (tui_version)
2335 low = (CORE_ADDR) tuiDo ((TuiOpaqueFuncPtr) tui_vGetLowDisassemblyAddress,
2339 low += FUNCTION_START_OFFSET;
2341 else if (!(space_index = (char *) strchr (arg, ' ')))
2344 pc = parse_and_eval_address (arg);
2345 if (find_pc_partial_function (pc, &name, &low, &high) == 0)
2346 error ("No function contains specified address.\n");
2348 else if (tui_version)
2349 low = (CORE_ADDR) tuiDo ((TuiOpaqueFuncPtr) tui_vGetLowDisassemblyAddress,
2354 if (overlay_debugging)
2356 section = find_pc_overlay (pc);
2357 if (pc_in_unmapped_range (pc, section))
2359 /* find_pc_partial_function will have returned low and high
2360 relative to the symbolic (mapped) address range. Need to
2361 translate them back to the unmapped range where PC is. */
2362 low = overlay_unmapped_address (low, section);
2363 high = overlay_unmapped_address (high, section);
2367 low += FUNCTION_START_OFFSET;
2371 /* Two arguments. */
2372 *space_index = '\0';
2373 low = parse_and_eval_address (arg);
2374 high = parse_and_eval_address (space_index + 1);
2379 m_winPtrIsNull (disassemWin) || !disassemWin->generic.isVisible)
2382 printf_filtered ("Dump of assembler code ");
2385 printf_filtered ("for function %s:\n", name);
2389 printf_filtered ("from ");
2390 print_address_numeric (low, 1, gdb_stdout);
2391 printf_filtered (" to ");
2392 print_address_numeric (high, 1, gdb_stdout);
2393 printf_filtered (":\n");
2396 /* Dump the specified range. */
2399 #ifdef GDB_TARGET_MASK_DISAS_PC
2400 pc_masked = GDB_TARGET_MASK_DISAS_PC (pc);
2405 while (pc_masked < high)
2408 print_address (pc_masked, gdb_stdout);
2409 printf_filtered (":\t");
2410 /* We often wrap here if there are long symbolic names. */
2412 pc += print_insn (pc, gdb_stdout);
2413 printf_filtered ("\n");
2415 #ifdef GDB_TARGET_MASK_DISAS_PC
2416 pc_masked = GDB_TARGET_MASK_DISAS_PC (pc);
2421 printf_filtered ("End of assembler dump.\n");
2422 gdb_flush (gdb_stdout);
2427 tuiDo ((TuiOpaqueFuncPtr) tui_vAddWinToLayout, DISASSEM_WIN);
2428 tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateSourceWindowsWithAddr, low);
2433 /* Print the instruction at address MEMADDR in debugged memory,
2434 on STREAM. Returns length of the instruction, in bytes. */
2437 print_insn (CORE_ADDR memaddr, struct ui_file *stream)
2439 if (TARGET_BYTE_ORDER == BIG_ENDIAN)
2440 TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_BIG;
2442 TARGET_PRINT_INSN_INFO->endian = BFD_ENDIAN_LITTLE;
2444 if (TARGET_ARCHITECTURE != NULL)
2445 TARGET_PRINT_INSN_INFO->mach = TARGET_ARCHITECTURE->mach;
2446 /* else: should set .mach=0 but some disassemblers don't grok this */
2448 return TARGET_PRINT_INSN (memaddr, TARGET_PRINT_INSN_INFO);
2453 _initialize_printcmd (void)
2455 current_display_number = -1;
2457 add_info ("address", address_info,
2458 "Describe where symbol SYM is stored.");
2460 add_info ("symbol", sym_info,
2461 "Describe what symbol is at location ADDR.\n\
2462 Only for symbols with fixed locations (global or static scope).");
2464 add_com ("x", class_vars, x_command,
2465 concat ("Examine memory: x/FMT ADDRESS.\n\
2466 ADDRESS is an expression for the memory address to examine.\n\
2467 FMT is a repeat count followed by a format letter and a size letter.\n\
2468 Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
2469 t(binary), f(float), a(address), i(instruction), c(char) and s(string).\n",
2470 "Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
2471 The specified number of objects of the specified size are printed\n\
2472 according to the format.\n\n\
2473 Defaults for format and size letters are those previously used.\n\
2474 Default count is 1. Default address is following last thing printed\n\
2475 with this command or \"print\".", NULL));
2477 add_com ("disassemble", class_vars, disassemble_command,
2478 "Disassemble a specified section of memory.\n\
2479 Default is the function surrounding the pc of the selected frame.\n\
2480 With a single argument, the function surrounding that address is dumped.\n\
2481 Two arguments are taken as a range of memory to dump.");
2483 add_com_alias ("va", "disassemble", class_xdb, 0);
2486 add_com ("whereis", class_vars, whereis_command,
2487 "Print line number and file of definition of variable.");
2490 add_info ("display", display_info,
2491 "Expressions to display when program stops, with code numbers.");
2493 add_cmd ("undisplay", class_vars, undisplay_command,
2494 "Cancel some expressions to be displayed when program stops.\n\
2495 Arguments are the code numbers of the expressions to stop displaying.\n\
2496 No argument means cancel all automatic-display expressions.\n\
2497 \"delete display\" has the same effect as this command.\n\
2498 Do \"info display\" to see current list of code numbers.",
2501 add_com ("display", class_vars, display_command,
2502 "Print value of expression EXP each time the program stops.\n\
2503 /FMT may be used before EXP as in the \"print\" command.\n\
2504 /FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
2505 as in the \"x\" command, and then EXP is used to get the address to examine\n\
2506 and examining is done as in the \"x\" command.\n\n\
2507 With no argument, display all currently requested auto-display expressions.\n\
2508 Use \"undisplay\" to cancel display requests previously made."
2511 add_cmd ("display", class_vars, enable_display,
2512 "Enable some expressions to be displayed when program stops.\n\
2513 Arguments are the code numbers of the expressions to resume displaying.\n\
2514 No argument means enable all automatic-display expressions.\n\
2515 Do \"info display\" to see current list of code numbers.", &enablelist);
2517 add_cmd ("display", class_vars, disable_display_command,
2518 "Disable some expressions to be displayed when program stops.\n\
2519 Arguments are the code numbers of the expressions to stop displaying.\n\
2520 No argument means disable all automatic-display expressions.\n\
2521 Do \"info display\" to see current list of code numbers.", &disablelist);
2523 add_cmd ("display", class_vars, undisplay_command,
2524 "Cancel some expressions to be displayed when program stops.\n\
2525 Arguments are the code numbers of the expressions to stop displaying.\n\
2526 No argument means cancel all automatic-display expressions.\n\
2527 Do \"info display\" to see current list of code numbers.", &deletelist);
2529 add_com ("printf", class_vars, printf_command,
2530 "printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
2531 This is useful for formatted output in user-defined commands.");
2533 add_com ("output", class_vars, output_command,
2534 "Like \"print\" but don't put in value history and don't print newline.\n\
2535 This is useful in user-defined commands.");
2537 add_prefix_cmd ("set", class_vars, set_command,
2538 concat ("Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2539 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2540 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2541 with $), a register (a few standard names starting with $), or an actual\n\
2542 variable in the program being debugged. EXP is any valid expression.\n",
2543 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2544 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2545 You can see these environment settings with the \"show\" command.", NULL),
2546 &setlist, "set ", 1, &cmdlist);
2548 add_com ("assign", class_vars, set_command, concat ("Evaluate expression \
2549 EXP and assign result to variable VAR, using assignment\n\
2550 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2551 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2552 with $), a register (a few standard names starting with $), or an actual\n\
2553 variable in the program being debugged. EXP is any valid expression.\n",
2554 "Use \"set variable\" for variables with names identical to set subcommands.\n\
2555 \nWith a subcommand, this command modifies parts of the gdb environment.\n\
2556 You can see these environment settings with the \"show\" command.", NULL));
2558 /* "call" is the same as "set", but handy for dbx users to call fns. */
2559 add_com ("call", class_vars, call_command,
2560 "Call a function in the program.\n\
2561 The argument is the function name and arguments, in the notation of the\n\
2562 current working language. The result is printed and saved in the value\n\
2563 history, if it is not void.");
2565 add_cmd ("variable", class_vars, set_command,
2566 "Evaluate expression EXP and assign result to variable VAR, using assignment\n\
2567 syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
2568 example). VAR may be a debugger \"convenience\" variable (names starting\n\
2569 with $), a register (a few standard names starting with $), or an actual\n\
2570 variable in the program being debugged. EXP is any valid expression.\n\
2571 This may usually be abbreviated to simply \"set\".",
2574 add_com ("print", class_vars, print_command,
2575 concat ("Print value of expression EXP.\n\
2576 Variables accessible are those of the lexical environment of the selected\n\
2577 stack frame, plus all those whose scope is global or an entire file.\n\
2579 $NUM gets previous value number NUM. $ and $$ are the last two values.\n\
2580 $$NUM refers to NUM'th value back from the last one.\n\
2581 Names starting with $ refer to registers (with the values they would have\n",
2582 "if the program were to return to the stack frame now selected, restoring\n\
2583 all registers saved by frames farther in) or else to debugger\n\
2584 \"convenience\" variables (any such name not a known register).\n\
2585 Use assignment expressions to give values to convenience variables.\n",
2587 {TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
2588 @ is a binary operator for treating consecutive data objects\n\
2589 anywhere in memory as an array. FOO@NUM gives an array whose first\n\
2590 element is FOO, whose second element is stored in the space following\n\
2591 where FOO is stored, etc. FOO must be an expression whose value\n\
2592 resides in memory.\n",
2594 EXP may be preceded with /FMT, where FMT is a format letter\n\
2595 but no count or size letter (see \"x\" command).", NULL));
2596 add_com_alias ("p", "print", class_vars, 1);
2598 add_com ("inspect", class_vars, inspect_command,
2599 "Same as \"print\" command, except that if you are running in the epoch\n\
2600 environment, the value is printed in its own window.");
2603 add_set_cmd ("max-symbolic-offset", no_class, var_uinteger,
2604 (char *) &max_symbolic_offset,
2605 "Set the largest offset that will be printed in <symbol+1234> form.",
2609 add_set_cmd ("symbol-filename", no_class, var_boolean,
2610 (char *) &print_symbol_filename,
2611 "Set printing of source filename and line number with <symbol>.",
2615 /* For examine/instruction a single byte quantity is specified as
2616 the data. This avoids problems with value_at_lazy() requiring a
2617 valid data type (and rejecting VOID). */
2618 examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL);
2620 examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL);
2621 examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL);
2622 examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL);
2623 examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL);