1 /* Fortran language support routines for GDB, the GNU debugger.
3 Copyright (C) 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
4 2004, 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 Contributed by Motorola. Adapted from the C parser by Farooq Butt
7 (fmbutt@engage.sps.mot.com).
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 #include "gdb_string.h"
28 #include "expression.h"
29 #include "parser-defs.h"
36 /* Following is dubious stuff that had been in the xcoff reader. */
40 long line_offset
; /* Line offset for function */
41 struct saved_fcn
*next
;
45 struct saved_bf_symnum
47 long symnum_fcn
; /* Symnum of function (i.e. .function directive) */
48 long symnum_bf
; /* Symnum of .bf for this function */
49 struct saved_bf_symnum
*next
;
52 typedef struct saved_fcn SAVED_FUNCTION
, *SAVED_FUNCTION_PTR
;
53 typedef struct saved_bf_symnum SAVED_BF
, *SAVED_BF_PTR
;
57 extern void _initialize_f_language (void);
59 static void clear_function_list (void);
60 static long get_bf_for_fcn (long);
61 static void clear_bf_list (void);
62 static void patch_all_commons_by_name (char *, CORE_ADDR
, int);
63 static SAVED_F77_COMMON_PTR
find_first_common_named (char *);
64 static void add_common_entry (struct symbol
*);
65 static void add_common_block (char *, CORE_ADDR
, int, char *);
66 static SAVED_FUNCTION
*allocate_saved_function_node (void);
67 static SAVED_BF_PTR
allocate_saved_bf_node (void);
68 static COMMON_ENTRY_PTR
allocate_common_entry_node (void);
69 static SAVED_F77_COMMON_PTR
allocate_saved_f77_common_node (void);
70 static void patch_common_entries (SAVED_F77_COMMON_PTR
, CORE_ADDR
, int);
73 static void f_printchar (int c
, struct type
*type
, struct ui_file
* stream
);
74 static void f_emit_char (int c
, struct type
*type
,
75 struct ui_file
* stream
, int quoter
);
77 /* Print the character C on STREAM as part of the contents of a literal
78 string whose delimiter is QUOTER. Note that that format for printing
79 characters and strings is language specific.
80 FIXME: This is a copy of the same function from c-exp.y. It should
81 be replaced with a true F77 version. */
84 f_emit_char (int c
, struct type
*type
, struct ui_file
*stream
, int quoter
)
86 c
&= 0xFF; /* Avoid sign bit follies */
88 if (PRINT_LITERAL_FORM (c
))
90 if (c
== '\\' || c
== quoter
)
91 fputs_filtered ("\\", stream
);
92 fprintf_filtered (stream
, "%c", c
);
99 fputs_filtered ("\\n", stream
);
102 fputs_filtered ("\\b", stream
);
105 fputs_filtered ("\\t", stream
);
108 fputs_filtered ("\\f", stream
);
111 fputs_filtered ("\\r", stream
);
114 fputs_filtered ("\\e", stream
);
117 fputs_filtered ("\\a", stream
);
120 fprintf_filtered (stream
, "\\%.3o", (unsigned int) c
);
126 /* FIXME: This is a copy of the same function from c-exp.y. It should
127 be replaced with a true F77version. */
130 f_printchar (int c
, struct type
*type
, struct ui_file
*stream
)
132 fputs_filtered ("'", stream
);
133 LA_EMIT_CHAR (c
, type
, stream
, '\'');
134 fputs_filtered ("'", stream
);
137 /* Print the character string STRING, printing at most LENGTH characters.
138 Printing stops early if the number hits print_max; repeat counts
139 are printed as appropriate. Print ellipses at the end if we
140 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
141 FIXME: This is a copy of the same function from c-exp.y. It should
142 be replaced with a true F77 version. */
145 f_printstr (struct ui_file
*stream
, struct type
*type
, const gdb_byte
*string
,
146 unsigned int length
, const char *encoding
, int force_ellipses
,
147 const struct value_print_options
*options
)
150 unsigned int things_printed
= 0;
153 int width
= TYPE_LENGTH (type
);
157 fputs_filtered ("''", gdb_stdout
);
161 for (i
= 0; i
< length
&& things_printed
< options
->print_max
; ++i
)
163 /* Position of the character we are examining
164 to see whether it is repeated. */
166 /* Number of repetitions we have detected so far. */
173 fputs_filtered (", ", stream
);
179 while (rep1
< length
&& string
[rep1
] == string
[i
])
185 if (reps
> options
->repeat_count_threshold
)
189 if (options
->inspect_it
)
190 fputs_filtered ("\\', ", stream
);
192 fputs_filtered ("', ", stream
);
195 f_printchar (string
[i
], type
, stream
);
196 fprintf_filtered (stream
, " <repeats %u times>", reps
);
198 things_printed
+= options
->repeat_count_threshold
;
205 if (options
->inspect_it
)
206 fputs_filtered ("\\'", stream
);
208 fputs_filtered ("'", stream
);
211 LA_EMIT_CHAR (string
[i
], type
, stream
, '"');
216 /* Terminate the quotes if necessary. */
219 if (options
->inspect_it
)
220 fputs_filtered ("\\'", stream
);
222 fputs_filtered ("'", stream
);
225 if (force_ellipses
|| i
< length
)
226 fputs_filtered ("...", stream
);
230 /* Table of operators and their precedences for printing expressions. */
232 static const struct op_print f_op_print_tab
[] =
234 {"+", BINOP_ADD
, PREC_ADD
, 0},
235 {"+", UNOP_PLUS
, PREC_PREFIX
, 0},
236 {"-", BINOP_SUB
, PREC_ADD
, 0},
237 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
238 {"*", BINOP_MUL
, PREC_MUL
, 0},
239 {"/", BINOP_DIV
, PREC_MUL
, 0},
240 {"DIV", BINOP_INTDIV
, PREC_MUL
, 0},
241 {"MOD", BINOP_REM
, PREC_MUL
, 0},
242 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
243 {".OR.", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
244 {".AND.", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
245 {".NOT.", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
246 {".EQ.", BINOP_EQUAL
, PREC_EQUAL
, 0},
247 {".NE.", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
248 {".LE.", BINOP_LEQ
, PREC_ORDER
, 0},
249 {".GE.", BINOP_GEQ
, PREC_ORDER
, 0},
250 {".GT.", BINOP_GTR
, PREC_ORDER
, 0},
251 {".LT.", BINOP_LESS
, PREC_ORDER
, 0},
252 {"**", UNOP_IND
, PREC_PREFIX
, 0},
253 {"@", BINOP_REPEAT
, PREC_REPEAT
, 0},
257 enum f_primitive_types
{
258 f_primitive_type_character
,
259 f_primitive_type_logical
,
260 f_primitive_type_logical_s1
,
261 f_primitive_type_logical_s2
,
262 f_primitive_type_logical_s8
,
263 f_primitive_type_integer
,
264 f_primitive_type_integer_s2
,
265 f_primitive_type_real
,
266 f_primitive_type_real_s8
,
267 f_primitive_type_real_s16
,
268 f_primitive_type_complex_s8
,
269 f_primitive_type_complex_s16
,
270 f_primitive_type_void
,
275 f_language_arch_info (struct gdbarch
*gdbarch
,
276 struct language_arch_info
*lai
)
278 const struct builtin_f_type
*builtin
= builtin_f_type (gdbarch
);
280 lai
->string_char_type
= builtin
->builtin_character
;
281 lai
->primitive_type_vector
282 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_f_primitive_types
+ 1,
285 lai
->primitive_type_vector
[f_primitive_type_character
]
286 = builtin
->builtin_character
;
287 lai
->primitive_type_vector
[f_primitive_type_logical
]
288 = builtin
->builtin_logical
;
289 lai
->primitive_type_vector
[f_primitive_type_logical_s1
]
290 = builtin
->builtin_logical_s1
;
291 lai
->primitive_type_vector
[f_primitive_type_logical_s2
]
292 = builtin
->builtin_logical_s2
;
293 lai
->primitive_type_vector
[f_primitive_type_logical_s8
]
294 = builtin
->builtin_logical_s8
;
295 lai
->primitive_type_vector
[f_primitive_type_real
]
296 = builtin
->builtin_real
;
297 lai
->primitive_type_vector
[f_primitive_type_real_s8
]
298 = builtin
->builtin_real_s8
;
299 lai
->primitive_type_vector
[f_primitive_type_real_s16
]
300 = builtin
->builtin_real_s16
;
301 lai
->primitive_type_vector
[f_primitive_type_complex_s8
]
302 = builtin
->builtin_complex_s8
;
303 lai
->primitive_type_vector
[f_primitive_type_complex_s16
]
304 = builtin
->builtin_complex_s16
;
305 lai
->primitive_type_vector
[f_primitive_type_void
]
306 = builtin
->builtin_void
;
308 lai
->bool_type_symbol
= "logical";
309 lai
->bool_type_default
= builtin
->builtin_logical_s2
;
312 /* This is declared in c-lang.h but it is silly to import that file for what
313 is already just a hack. */
314 extern int c_value_print (struct value
*, struct ui_file
*,
315 const struct value_print_options
*);
317 const struct language_defn f_language_defn
=
326 &exp_descriptor_standard
,
327 f_parse
, /* parser */
328 f_error
, /* parser error function */
330 f_printchar
, /* Print character constant */
331 f_printstr
, /* function to print string constant */
332 f_emit_char
, /* Function to print a single character */
333 f_print_type
, /* Print a type using appropriate syntax */
334 default_print_typedef
, /* Print a typedef using appropriate syntax */
335 f_val_print
, /* Print a value using appropriate syntax */
336 c_value_print
, /* FIXME */
337 NULL
, /* Language specific skip_trampoline */
338 NULL
, /* name_of_this */
339 basic_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
340 basic_lookup_transparent_type
,/* lookup_transparent_type */
341 NULL
, /* Language specific symbol demangler */
342 NULL
, /* Language specific class_name_from_physname */
343 f_op_print_tab
, /* expression operators for printing */
344 0, /* arrays are first-class (not c-style) */
345 1, /* String lower bound */
346 default_word_break_characters
,
347 default_make_symbol_completion_list
,
348 f_language_arch_info
,
349 default_print_array_index
,
350 default_pass_by_reference
,
356 build_fortran_types (struct gdbarch
*gdbarch
)
358 struct builtin_f_type
*builtin_f_type
359 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_f_type
);
361 builtin_f_type
->builtin_void
362 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "VOID");
364 builtin_f_type
->builtin_character
365 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
, 0, "character");
367 builtin_f_type
->builtin_logical_s1
368 = arch_boolean_type (gdbarch
, TARGET_CHAR_BIT
, 1, "logical*1");
370 builtin_f_type
->builtin_integer_s2
371 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
), 0,
374 builtin_f_type
->builtin_logical_s2
375 = arch_boolean_type (gdbarch
, gdbarch_short_bit (gdbarch
), 1,
378 builtin_f_type
->builtin_logical_s8
379 = arch_boolean_type (gdbarch
, gdbarch_long_long_bit (gdbarch
), 1,
382 builtin_f_type
->builtin_integer
383 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
), 0,
386 builtin_f_type
->builtin_logical
387 = arch_boolean_type (gdbarch
, gdbarch_int_bit (gdbarch
), 1,
390 builtin_f_type
->builtin_real
391 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
393 builtin_f_type
->builtin_real_s8
394 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
396 builtin_f_type
->builtin_real_s16
397 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
400 builtin_f_type
->builtin_complex_s8
401 = arch_complex_type (gdbarch
, "complex*8",
402 builtin_f_type
->builtin_real
);
403 builtin_f_type
->builtin_complex_s16
404 = arch_complex_type (gdbarch
, "complex*16",
405 builtin_f_type
->builtin_real_s8
);
406 builtin_f_type
->builtin_complex_s32
407 = arch_complex_type (gdbarch
, "complex*32",
408 builtin_f_type
->builtin_real_s16
);
410 return builtin_f_type
;
413 static struct gdbarch_data
*f_type_data
;
415 const struct builtin_f_type
*
416 builtin_f_type (struct gdbarch
*gdbarch
)
418 return gdbarch_data (gdbarch
, f_type_data
);
422 _initialize_f_language (void)
424 f_type_data
= gdbarch_data_register_post_init (build_fortran_types
);
426 add_language (&f_language_defn
);
431 allocate_saved_bf_node (void)
435 new = (SAVED_BF_PTR
) xmalloc (sizeof (SAVED_BF
));
439 static SAVED_FUNCTION
*
440 allocate_saved_function_node (void)
444 new = (SAVED_FUNCTION
*) xmalloc (sizeof (SAVED_FUNCTION
));
448 static SAVED_F77_COMMON_PTR
449 allocate_saved_f77_common_node (void)
451 SAVED_F77_COMMON_PTR
new;
453 new = (SAVED_F77_COMMON_PTR
) xmalloc (sizeof (SAVED_F77_COMMON
));
457 static COMMON_ENTRY_PTR
458 allocate_common_entry_node (void)
460 COMMON_ENTRY_PTR
new;
462 new = (COMMON_ENTRY_PTR
) xmalloc (sizeof (COMMON_ENTRY
));
467 SAVED_F77_COMMON_PTR head_common_list
= NULL
; /* Ptr to 1st saved COMMON */
468 SAVED_F77_COMMON_PTR tail_common_list
= NULL
; /* Ptr to last saved COMMON */
469 SAVED_F77_COMMON_PTR current_common
= NULL
; /* Ptr to current COMMON */
472 static SAVED_BF_PTR saved_bf_list
= NULL
; /* Ptr to (.bf,function)
474 static SAVED_BF_PTR saved_bf_list_end
= NULL
; /* Ptr to above list's end */
475 static SAVED_BF_PTR current_head_bf_list
= NULL
; /* Current head of above list
478 static SAVED_BF_PTR tmp_bf_ptr
; /* Generic temporary for use
481 /* The following function simply enters a given common block onto
482 the global common block chain */
485 add_common_block (char *name
, CORE_ADDR offset
, int secnum
, char *func_stab
)
487 SAVED_F77_COMMON_PTR tmp
;
488 char *c
, *local_copy_func_stab
;
490 /* If the COMMON block we are trying to add has a blank
491 name (i.e. "#BLNK_COM") then we set it to __BLANK
492 because the darn "#" character makes GDB's input
496 if (strcmp (name
, BLANK_COMMON_NAME_ORIGINAL
) == 0
497 || strcmp (name
, BLANK_COMMON_NAME_MF77
) == 0)
501 name
= alloca (strlen (BLANK_COMMON_NAME_LOCAL
) + 1);
502 strcpy (name
, BLANK_COMMON_NAME_LOCAL
);
505 tmp
= allocate_saved_f77_common_node ();
507 local_copy_func_stab
= xmalloc (strlen (func_stab
) + 1);
508 strcpy (local_copy_func_stab
, func_stab
);
510 tmp
->name
= xmalloc (strlen (name
) + 1);
512 /* local_copy_func_stab is a stabstring, let us first extract the
513 function name from the stab by NULLing out the ':' character. */
517 c
= strchr (local_copy_func_stab
, ':');
522 error (_("Malformed function STAB found in add_common_block()"));
525 tmp
->owning_function
= xmalloc (strlen (local_copy_func_stab
) + 1);
527 strcpy (tmp
->owning_function
, local_copy_func_stab
);
529 strcpy (tmp
->name
, name
);
530 tmp
->offset
= offset
;
533 tmp
->secnum
= secnum
;
535 current_common
= tmp
;
537 if (head_common_list
== NULL
)
539 head_common_list
= tail_common_list
= tmp
;
543 tail_common_list
->next
= tmp
;
544 tail_common_list
= tmp
;
549 /* The following function simply enters a given common entry onto
550 the "current_common" block that has been saved away. */
554 add_common_entry (struct symbol
*entry_sym_ptr
)
556 COMMON_ENTRY_PTR tmp
;
560 /* The order of this list is important, since
561 we expect the entries to appear in decl.
562 order when we later issue "info common" calls */
564 tmp
= allocate_common_entry_node ();
567 tmp
->symbol
= entry_sym_ptr
;
569 if (current_common
== NULL
)
570 error (_("Attempt to add COMMON entry with no block open!"));
573 if (current_common
->entries
== NULL
)
575 current_common
->entries
= tmp
;
576 current_common
->end_of_entries
= tmp
;
580 current_common
->end_of_entries
->next
= tmp
;
581 current_common
->end_of_entries
= tmp
;
587 /* This routine finds the first encountred COMMON block named "name" */
590 static SAVED_F77_COMMON_PTR
591 find_first_common_named (char *name
)
594 SAVED_F77_COMMON_PTR tmp
;
596 tmp
= head_common_list
;
600 if (strcmp (tmp
->name
, name
) == 0)
609 /* This routine finds the first encountred COMMON block named "name"
610 that belongs to function funcname */
613 find_common_for_function (char *name
, char *funcname
)
616 SAVED_F77_COMMON_PTR tmp
;
618 tmp
= head_common_list
;
622 if (strcmp (tmp
->name
, name
) == 0
623 && strcmp (tmp
->owning_function
, funcname
) == 0)
634 /* The following function is called to patch up the offsets
635 for the statics contained in the COMMON block named
639 patch_common_entries (SAVED_F77_COMMON_PTR blk
, CORE_ADDR offset
, int secnum
)
641 COMMON_ENTRY_PTR entry
;
643 blk
->offset
= offset
; /* Keep this around for future use. */
645 entry
= blk
->entries
;
647 while (entry
!= NULL
)
649 SYMBOL_VALUE (entry
->symbol
) += offset
;
650 SYMBOL_SECTION (entry
->symbol
) = secnum
;
654 blk
->secnum
= secnum
;
657 /* Patch all commons named "name" that need patching.Since COMMON
658 blocks occur with relative infrequency, we simply do a linear scan on
659 the name. Eventually, the best way to do this will be a
660 hashed-lookup. Secnum is the section number for the .bss section
661 (which is where common data lives). */
664 patch_all_commons_by_name (char *name
, CORE_ADDR offset
, int secnum
)
667 SAVED_F77_COMMON_PTR tmp
;
669 /* For blank common blocks, change the canonical reprsentation
672 if (strcmp (name
, BLANK_COMMON_NAME_ORIGINAL
) == 0
673 || strcmp (name
, BLANK_COMMON_NAME_MF77
) == 0)
676 name
= alloca (strlen (BLANK_COMMON_NAME_LOCAL
) + 1);
677 strcpy (name
, BLANK_COMMON_NAME_LOCAL
);
680 tmp
= head_common_list
;
684 if (COMMON_NEEDS_PATCHING (tmp
))
685 if (strcmp (tmp
->name
, name
) == 0)
686 patch_common_entries (tmp
, offset
, secnum
);
693 /* This macro adds the symbol-number for the start of the function
694 (the symbol number of the .bf) referenced by symnum_fcn to a
695 list. This list, in reality should be a FIFO queue but since
696 #line pragmas sometimes cause line ranges to get messed up
697 we simply create a linear list. This list can then be searched
698 first by a queueing algorithm and upon failure fall back to
702 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
704 if (saved_bf_list == NULL) \
706 tmp_bf_ptr = allocate_saved_bf_node(); \
708 tmp_bf_ptr->symnum_bf = (bf_sym); \
709 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
710 tmp_bf_ptr->next = NULL; \
712 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
713 saved_bf_list_end = tmp_bf_ptr; \
717 tmp_bf_ptr = allocate_saved_bf_node(); \
719 tmp_bf_ptr->symnum_bf = (bf_sym); \
720 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
721 tmp_bf_ptr->next = NULL; \
723 saved_bf_list_end->next = tmp_bf_ptr; \
724 saved_bf_list_end = tmp_bf_ptr; \
728 /* This function frees the entire (.bf,function) list */
735 SAVED_BF_PTR tmp
= saved_bf_list
;
736 SAVED_BF_PTR next
= NULL
;
744 saved_bf_list
= NULL
;
748 int global_remote_debug
;
753 get_bf_for_fcn (long the_function
)
758 /* First use a simple queuing algorithm (i.e. look and see if the
759 item at the head of the queue is the one you want) */
761 if (saved_bf_list
== NULL
)
762 internal_error (__FILE__
, __LINE__
,
763 _("cannot get .bf node off empty list"));
765 if (current_head_bf_list
!= NULL
)
766 if (current_head_bf_list
->symnum_fcn
== the_function
)
768 if (global_remote_debug
)
769 fprintf_unfiltered (gdb_stderr
, "*");
771 tmp
= current_head_bf_list
;
772 current_head_bf_list
= current_head_bf_list
->next
;
773 return (tmp
->symnum_bf
);
776 /* If the above did not work (probably because #line directives were
777 used in the sourcefile and they messed up our internal tables) we now do
778 the ugly linear scan */
780 if (global_remote_debug
)
781 fprintf_unfiltered (gdb_stderr
, "\ndefaulting to linear scan\n");
788 if (tmp
->symnum_fcn
== the_function
)
790 if (global_remote_debug
)
791 fprintf_unfiltered (gdb_stderr
, "Found in %d probes\n", nprobes
);
792 current_head_bf_list
= tmp
->next
;
793 return (tmp
->symnum_bf
);
801 static SAVED_FUNCTION_PTR saved_function_list
= NULL
;
802 static SAVED_FUNCTION_PTR saved_function_list_end
= NULL
;
805 clear_function_list (void)
807 SAVED_FUNCTION_PTR tmp
= saved_function_list
;
808 SAVED_FUNCTION_PTR next
= NULL
;
817 saved_function_list
= NULL
;