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;