1 /* Support for printing Fortran values for GDB, the GNU debugger.
3 Copyright (C) 1993-2016 Free Software Foundation, Inc.
5 Contributed by Motorola. Adapted from the C definitions by Farooq Butt
6 (fmbutt@engage.sps.mot.com), additionally worked over by Stan Shebs.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "expression.h"
35 #include "dictionary.h"
37 extern void _initialize_f_valprint (void);
38 static void info_common_command (char *, int);
39 static void f77_get_dynamic_length_of_aggregate (struct type
*);
41 int f77_array_offset_tbl
[MAX_FORTRAN_DIMS
+ 1][2];
43 /* Array which holds offsets to be applied to get a row's elements
44 for a given array. Array also holds the size of each subarray. */
47 f77_get_lowerbound (struct type
*type
)
49 if (TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type
))
50 error (_("Lower bound may not be '*' in F77"));
52 return TYPE_ARRAY_LOWER_BOUND_VALUE (type
);
56 f77_get_upperbound (struct type
*type
)
58 if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))
60 /* We have an assumed size array on our hands. Assume that
61 upper_bound == lower_bound so that we show at least 1 element.
62 If the user wants to see more elements, let him manually ask for 'em
63 and we'll subscript the array and show him. */
65 return f77_get_lowerbound (type
);
68 return TYPE_ARRAY_UPPER_BOUND_VALUE (type
);
71 /* Obtain F77 adjustable array dimensions. */
74 f77_get_dynamic_length_of_aggregate (struct type
*type
)
79 /* Recursively go all the way down into a possibly multi-dimensional
80 F77 array and get the bounds. For simple arrays, this is pretty
81 easy but when the bounds are dynamic, we must be very careful
82 to add up all the lengths correctly. Not doing this right
83 will lead to horrendous-looking arrays in parameter lists.
85 This function also works for strings which behave very
86 similarly to arrays. */
88 if (TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_ARRAY
89 || TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_STRING
)
90 f77_get_dynamic_length_of_aggregate (TYPE_TARGET_TYPE (type
));
92 /* Recursion ends here, start setting up lengths. */
93 lower_bound
= f77_get_lowerbound (type
);
94 upper_bound
= f77_get_upperbound (type
);
96 /* Patch in a valid length value. */
99 (upper_bound
- lower_bound
+ 1)
100 * TYPE_LENGTH (check_typedef (TYPE_TARGET_TYPE (type
)));
103 /* Actual function which prints out F77 arrays, Valaddr == address in
104 the superior. Address == the address in the inferior. */
107 f77_print_array_1 (int nss
, int ndimensions
, struct type
*type
,
108 const gdb_byte
*valaddr
,
109 int embedded_offset
, CORE_ADDR address
,
110 struct ui_file
*stream
, int recurse
,
111 const struct value
*val
,
112 const struct value_print_options
*options
,
115 struct type
*range_type
= TYPE_INDEX_TYPE (check_typedef (type
));
116 CORE_ADDR addr
= address
+ embedded_offset
;
117 LONGEST lowerbound
, upperbound
;
120 get_discrete_bounds (range_type
, &lowerbound
, &upperbound
);
122 if (nss
!= ndimensions
)
124 size_t dim_size
= TYPE_LENGTH (TYPE_TARGET_TYPE (type
));
128 (i
< upperbound
+ 1 && (*elts
) < options
->print_max
);
131 struct value
*subarray
= value_from_contents_and_address
132 (TYPE_TARGET_TYPE (type
), value_contents_for_printing_const (val
)
133 + offs
, addr
+ offs
);
135 fprintf_filtered (stream
, "( ");
136 f77_print_array_1 (nss
+ 1, ndimensions
, value_type (subarray
),
137 value_contents_for_printing (subarray
),
138 value_embedded_offset (subarray
),
139 value_address (subarray
),
140 stream
, recurse
, subarray
, options
, elts
);
142 fprintf_filtered (stream
, ") ");
144 if (*elts
>= options
->print_max
&& i
< upperbound
)
145 fprintf_filtered (stream
, "...");
149 for (i
= lowerbound
; i
< upperbound
+ 1 && (*elts
) < options
->print_max
;
152 struct value
*elt
= value_subscript ((struct value
*)val
, i
);
154 val_print (value_type (elt
),
155 value_contents_for_printing (elt
),
156 value_embedded_offset (elt
),
157 value_address (elt
), stream
, recurse
,
158 elt
, options
, current_language
);
161 fprintf_filtered (stream
, ", ");
163 if ((*elts
== options
->print_max
- 1)
164 && (i
!= upperbound
))
165 fprintf_filtered (stream
, "...");
170 /* This function gets called to print an F77 array, we set up some
171 stuff and then immediately call f77_print_array_1(). */
174 f77_print_array (struct type
*type
, const gdb_byte
*valaddr
,
176 CORE_ADDR address
, struct ui_file
*stream
,
178 const struct value
*val
,
179 const struct value_print_options
*options
)
184 ndimensions
= calc_f77_array_dims (type
);
186 if (ndimensions
> MAX_FORTRAN_DIMS
|| ndimensions
< 0)
188 Type node corrupt! F77 arrays cannot have %d subscripts (%d Max)"),
189 ndimensions
, MAX_FORTRAN_DIMS
);
191 f77_print_array_1 (1, ndimensions
, type
, valaddr
, embedded_offset
,
192 address
, stream
, recurse
, val
, options
, &elts
);
196 /* Decorations for Fortran. */
198 static const struct generic_val_print_decorations f_decorations
=
208 /* See val_print for a description of the various parameters of this
209 function; they are identical. */
212 f_val_print (struct type
*type
, const gdb_byte
*valaddr
, int embedded_offset
,
213 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
214 const struct value
*original_value
,
215 const struct value_print_options
*options
)
217 struct gdbarch
*gdbarch
= get_type_arch (type
);
218 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
219 unsigned int i
= 0; /* Number of characters printed. */
220 struct type
*elttype
;
224 type
= check_typedef (type
);
225 switch (TYPE_CODE (type
))
227 case TYPE_CODE_STRING
:
228 f77_get_dynamic_length_of_aggregate (type
);
229 LA_PRINT_STRING (stream
, builtin_type (gdbarch
)->builtin_char
,
230 valaddr
+ embedded_offset
,
231 TYPE_LENGTH (type
), NULL
, 0, options
);
234 case TYPE_CODE_ARRAY
:
235 if (TYPE_CODE (TYPE_TARGET_TYPE (type
)) != TYPE_CODE_CHAR
)
237 fprintf_filtered (stream
, "(");
238 f77_print_array (type
, valaddr
, embedded_offset
,
239 address
, stream
, recurse
, original_value
, options
);
240 fprintf_filtered (stream
, ")");
244 struct type
*ch_type
= TYPE_TARGET_TYPE (type
);
246 f77_get_dynamic_length_of_aggregate (type
);
247 LA_PRINT_STRING (stream
, ch_type
,
248 valaddr
+ embedded_offset
,
249 TYPE_LENGTH (type
) / TYPE_LENGTH (ch_type
),
255 if (options
->format
&& options
->format
!= 's')
257 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
258 original_value
, options
, 0, stream
);
265 addr
= unpack_pointer (type
, valaddr
+ embedded_offset
);
266 elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
268 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
270 /* Try to print what function it points to. */
271 print_function_pointer_address (options
, gdbarch
, addr
, stream
);
275 if (options
->symbol_print
)
276 want_space
= print_address_demangle (options
, gdbarch
, addr
,
278 else if (options
->addressprint
&& options
->format
!= 's')
280 fputs_filtered (paddress (gdbarch
, addr
), stream
);
284 /* For a pointer to char or unsigned char, also print the string
285 pointed to, unless pointer is null. */
286 if (TYPE_LENGTH (elttype
) == 1
287 && TYPE_CODE (elttype
) == TYPE_CODE_INT
288 && (options
->format
== 0 || options
->format
== 's')
292 fputs_filtered (" ", stream
);
293 i
= val_print_string (TYPE_TARGET_TYPE (type
), NULL
, addr
, -1,
301 if (options
->format
|| options
->output_format
)
303 struct value_print_options opts
= *options
;
305 opts
.format
= (options
->format
? options
->format
306 : options
->output_format
);
307 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
308 original_value
, &opts
, 0, stream
);
312 val_print_type_code_int (type
, valaddr
+ embedded_offset
, stream
);
313 /* C and C++ has no single byte int type, char is used instead.
314 Since we don't know whether the value is really intended to
315 be used as an integer or a character, print the character
316 equivalent as well. */
317 if (TYPE_LENGTH (type
) == 1)
321 fputs_filtered (" ", stream
);
322 c
= unpack_long (type
, valaddr
+ embedded_offset
);
323 LA_PRINT_CHAR ((unsigned char) c
, type
, stream
);
328 case TYPE_CODE_STRUCT
:
329 case TYPE_CODE_UNION
:
330 /* Starting from the Fortran 90 standard, Fortran supports derived
332 fprintf_filtered (stream
, "( ");
333 for (index
= 0; index
< TYPE_NFIELDS (type
); index
++)
335 struct value
*field
= value_field
336 ((struct value
*)original_value
, index
);
338 val_print (value_type (field
),
339 value_contents_for_printing (field
),
340 value_embedded_offset (field
),
341 value_address (field
), stream
, recurse
+ 1,
342 field
, options
, current_language
);
344 if (index
!= TYPE_NFIELDS (type
) - 1)
345 fputs_filtered (", ", stream
);
347 fprintf_filtered (stream
, " )");
352 case TYPE_CODE_FLAGS
:
355 case TYPE_CODE_ERROR
:
356 case TYPE_CODE_RANGE
:
357 case TYPE_CODE_UNDEF
:
358 case TYPE_CODE_COMPLEX
:
362 generic_val_print (type
, valaddr
, embedded_offset
, address
,
363 stream
, recurse
, original_value
, options
,
371 info_common_command_for_block (const struct block
*block
, const char *comname
,
374 struct block_iterator iter
;
377 struct value_print_options opts
;
379 get_user_print_options (&opts
);
381 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
382 if (SYMBOL_DOMAIN (sym
) == COMMON_BLOCK_DOMAIN
)
384 const struct common_block
*common
= SYMBOL_VALUE_COMMON_BLOCK (sym
);
387 gdb_assert (SYMBOL_CLASS (sym
) == LOC_COMMON_BLOCK
);
389 if (comname
&& (!SYMBOL_LINKAGE_NAME (sym
)
390 || strcmp (comname
, SYMBOL_LINKAGE_NAME (sym
)) != 0))
394 putchar_filtered ('\n');
397 if (SYMBOL_PRINT_NAME (sym
))
398 printf_filtered (_("Contents of F77 COMMON block '%s':\n"),
399 SYMBOL_PRINT_NAME (sym
));
401 printf_filtered (_("Contents of blank COMMON block:\n"));
403 for (index
= 0; index
< common
->n_entries
; index
++)
405 struct value
*val
= NULL
;
407 printf_filtered ("%s = ",
408 SYMBOL_PRINT_NAME (common
->contents
[index
]));
412 val
= value_of_variable (common
->contents
[index
], block
);
413 value_print (val
, gdb_stdout
, &opts
);
416 CATCH (except
, RETURN_MASK_ERROR
)
418 printf_filtered ("<error reading variable: %s>", except
.message
);
422 putchar_filtered ('\n');
427 /* This function is used to print out the values in a given COMMON
428 block. It will always use the most local common block of the
432 info_common_command (char *comname
, int from_tty
)
434 struct frame_info
*fi
;
435 const struct block
*block
;
436 int values_printed
= 0;
438 /* We have been told to display the contents of F77 COMMON
439 block supposedly visible in this function. Let us
440 first make sure that it is visible and if so, let
441 us display its contents. */
443 fi
= get_selected_frame (_("No frame selected"));
445 /* The following is generally ripped off from stack.c's routine
446 print_frame_info(). */
448 block
= get_frame_block (fi
, 0);
451 printf_filtered (_("No symbol table info available.\n"));
457 info_common_command_for_block (block
, comname
, &values_printed
);
458 /* After handling the function's top-level block, stop. Don't
459 continue to its superblock, the block of per-file symbols. */
460 if (BLOCK_FUNCTION (block
))
462 block
= BLOCK_SUPERBLOCK (block
);
468 printf_filtered (_("No common block '%s'.\n"), comname
);
470 printf_filtered (_("No common blocks.\n"));
475 _initialize_f_valprint (void)
477 add_info ("common", info_common_command
,
478 _("Print out the values contained in a Fortran COMMON block."));