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"
34 #include "cp-support.h"
37 /* Following is dubious stuff that had been in the xcoff reader. */
41 long line_offset; /* Line offset for function */
42 struct saved_fcn *next;
46 struct saved_bf_symnum
48 long symnum_fcn; /* Symnum of function (i.e. .function directive) */
49 long symnum_bf; /* Symnum of .bf for this function */
50 struct saved_bf_symnum *next;
53 typedef struct saved_fcn SAVED_FUNCTION, *SAVED_FUNCTION_PTR;
54 typedef struct saved_bf_symnum SAVED_BF, *SAVED_BF_PTR;
58 extern void _initialize_f_language (void);
60 static void clear_function_list (void);
61 static long get_bf_for_fcn (long);
62 static void clear_bf_list (void);
63 static void patch_all_commons_by_name (char *, CORE_ADDR, int);
64 static SAVED_F77_COMMON_PTR find_first_common_named (char *);
65 static void add_common_entry (struct symbol *);
66 static void add_common_block (char *, CORE_ADDR, int, char *);
67 static SAVED_FUNCTION *allocate_saved_function_node (void);
68 static SAVED_BF_PTR allocate_saved_bf_node (void);
69 static COMMON_ENTRY_PTR allocate_common_entry_node (void);
70 static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node (void);
71 static void patch_common_entries (SAVED_F77_COMMON_PTR, CORE_ADDR, int);
74 static void f_printchar (int c, struct type *type, struct ui_file * stream);
75 static void f_emit_char (int c, struct type *type,
76 struct ui_file * stream, int quoter);
78 /* Print the character C on STREAM as part of the contents of a literal
79 string whose delimiter is QUOTER. Note that that format for printing
80 characters and strings is language specific.
81 FIXME: This is a copy of the same function from c-exp.y. It should
82 be replaced with a true F77 version. */
85 f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
87 c &= 0xFF; /* Avoid sign bit follies */
89 if (PRINT_LITERAL_FORM (c))
91 if (c == '\\' || c == quoter)
92 fputs_filtered ("\\", stream);
93 fprintf_filtered (stream, "%c", c);
100 fputs_filtered ("\\n", stream);
103 fputs_filtered ("\\b", stream);
106 fputs_filtered ("\\t", stream);
109 fputs_filtered ("\\f", stream);
112 fputs_filtered ("\\r", stream);
115 fputs_filtered ("\\e", stream);
118 fputs_filtered ("\\a", stream);
121 fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
127 /* FIXME: This is a copy of the same function from c-exp.y. It should
128 be replaced with a true F77version. */
131 f_printchar (int c, struct type *type, struct ui_file *stream)
133 fputs_filtered ("'", stream);
134 LA_EMIT_CHAR (c, type, stream, '\'');
135 fputs_filtered ("'", stream);
138 /* Print the character string STRING, printing at most LENGTH characters.
139 Printing stops early if the number hits print_max; repeat counts
140 are printed as appropriate. Print ellipses at the end if we
141 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
142 FIXME: This is a copy of the same function from c-exp.y. It should
143 be replaced with a true F77 version. */
146 f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
147 unsigned int length, const char *encoding, int force_ellipses,
148 const struct value_print_options *options)
151 unsigned int things_printed = 0;
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 /* Remove the modules separator :: from the default break list. */
315 f_word_break_characters (void)
323 retval = xstrdup (default_word_break_characters ());
324 s = strchr (retval, ':');
327 char *last_char = &s[strlen (s) - 1];
336 /* Consider the modules separator :: as a valid symbol name character class. */
339 f_make_symbol_completion_list (char *text, char *word)
341 return default_make_symbol_completion_list_break_on (text, word, ":");
344 /* This is declared in c-lang.h but it is silly to import that file for what
345 is already just a hack. */
346 extern int c_value_print (struct value *, struct ui_file *,
347 const struct value_print_options *);
349 const struct language_defn f_language_defn =
358 &exp_descriptor_standard,
359 f_parse, /* parser */
360 f_error, /* parser error function */
362 f_printchar, /* Print character constant */
363 f_printstr, /* function to print string constant */
364 f_emit_char, /* Function to print a single character */
365 f_print_type, /* Print a type using appropriate syntax */
366 default_print_typedef, /* Print a typedef using appropriate syntax */
367 f_val_print, /* Print a value using appropriate syntax */
368 c_value_print, /* FIXME */
369 NULL, /* Language specific skip_trampoline */
370 NULL, /* name_of_this */
371 cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
372 basic_lookup_transparent_type,/* lookup_transparent_type */
373 NULL, /* Language specific symbol demangler */
374 NULL, /* Language specific class_name_from_physname */
375 f_op_print_tab, /* expression operators for printing */
376 0, /* arrays are first-class (not c-style) */
377 1, /* String lower bound */
378 f_word_break_characters,
379 f_make_symbol_completion_list,
380 f_language_arch_info,
381 default_print_array_index,
382 default_pass_by_reference,
388 build_fortran_types (struct gdbarch *gdbarch)
390 struct builtin_f_type *builtin_f_type
391 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
393 builtin_f_type->builtin_void
394 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");
396 builtin_f_type->builtin_character
397 = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
399 builtin_f_type->builtin_logical_s1
400 = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
402 builtin_f_type->builtin_integer_s2
403 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
406 builtin_f_type->builtin_logical_s2
407 = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
410 builtin_f_type->builtin_logical_s8
411 = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
414 builtin_f_type->builtin_integer
415 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
418 builtin_f_type->builtin_logical
419 = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
422 builtin_f_type->builtin_real
423 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
425 builtin_f_type->builtin_real_s8
426 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
428 builtin_f_type->builtin_real_s16
429 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
432 builtin_f_type->builtin_complex_s8
433 = arch_complex_type (gdbarch, "complex*8",
434 builtin_f_type->builtin_real);
435 builtin_f_type->builtin_complex_s16
436 = arch_complex_type (gdbarch, "complex*16",
437 builtin_f_type->builtin_real_s8);
438 builtin_f_type->builtin_complex_s32
439 = arch_complex_type (gdbarch, "complex*32",
440 builtin_f_type->builtin_real_s16);
442 return builtin_f_type;
445 static struct gdbarch_data *f_type_data;
447 const struct builtin_f_type *
448 builtin_f_type (struct gdbarch *gdbarch)
450 return gdbarch_data (gdbarch, f_type_data);
454 _initialize_f_language (void)
456 f_type_data = gdbarch_data_register_post_init (build_fortran_types);
458 add_language (&f_language_defn);
463 allocate_saved_bf_node (void)
467 new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
471 static SAVED_FUNCTION *
472 allocate_saved_function_node (void)
476 new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
480 static SAVED_F77_COMMON_PTR
481 allocate_saved_f77_common_node (void)
483 SAVED_F77_COMMON_PTR new;
485 new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
489 static COMMON_ENTRY_PTR
490 allocate_common_entry_node (void)
492 COMMON_ENTRY_PTR new;
494 new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
499 SAVED_F77_COMMON_PTR head_common_list = NULL; /* Ptr to 1st saved COMMON */
500 SAVED_F77_COMMON_PTR tail_common_list = NULL; /* Ptr to last saved COMMON */
501 SAVED_F77_COMMON_PTR current_common = NULL; /* Ptr to current COMMON */
504 static SAVED_BF_PTR saved_bf_list = NULL; /* Ptr to (.bf,function)
506 static SAVED_BF_PTR saved_bf_list_end = NULL; /* Ptr to above list's end */
507 static SAVED_BF_PTR current_head_bf_list = NULL; /* Current head of above list
510 static SAVED_BF_PTR tmp_bf_ptr; /* Generic temporary for use
513 /* The following function simply enters a given common block onto
514 the global common block chain */
517 add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
519 SAVED_F77_COMMON_PTR tmp;
520 char *c, *local_copy_func_stab;
522 /* If the COMMON block we are trying to add has a blank
523 name (i.e. "#BLNK_COM") then we set it to __BLANK
524 because the darn "#" character makes GDB's input
528 if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
529 || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
533 name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
534 strcpy (name, BLANK_COMMON_NAME_LOCAL);
537 tmp = allocate_saved_f77_common_node ();
539 local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
540 strcpy (local_copy_func_stab, func_stab);
542 tmp->name = xmalloc (strlen (name) + 1);
544 /* local_copy_func_stab is a stabstring, let us first extract the
545 function name from the stab by NULLing out the ':' character. */
549 c = strchr (local_copy_func_stab, ':');
554 error (_("Malformed function STAB found in add_common_block()"));
557 tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);
559 strcpy (tmp->owning_function, local_copy_func_stab);
561 strcpy (tmp->name, name);
562 tmp->offset = offset;
565 tmp->secnum = secnum;
567 current_common = tmp;
569 if (head_common_list == NULL)
571 head_common_list = tail_common_list = tmp;
575 tail_common_list->next = tmp;
576 tail_common_list = tmp;
581 /* The following function simply enters a given common entry onto
582 the "current_common" block that has been saved away. */
586 add_common_entry (struct symbol *entry_sym_ptr)
588 COMMON_ENTRY_PTR tmp;
592 /* The order of this list is important, since
593 we expect the entries to appear in decl.
594 order when we later issue "info common" calls */
596 tmp = allocate_common_entry_node ();
599 tmp->symbol = entry_sym_ptr;
601 if (current_common == NULL)
602 error (_("Attempt to add COMMON entry with no block open!"));
605 if (current_common->entries == NULL)
607 current_common->entries = tmp;
608 current_common->end_of_entries = tmp;
612 current_common->end_of_entries->next = tmp;
613 current_common->end_of_entries = tmp;
619 /* This routine finds the first encountred COMMON block named "name" */
622 static SAVED_F77_COMMON_PTR
623 find_first_common_named (char *name)
626 SAVED_F77_COMMON_PTR tmp;
628 tmp = head_common_list;
632 if (strcmp (tmp->name, name) == 0)
641 /* This routine finds the first encountred COMMON block named "name"
642 that belongs to function funcname */
645 find_common_for_function (char *name, char *funcname)
648 SAVED_F77_COMMON_PTR tmp;
650 tmp = head_common_list;
654 if (strcmp (tmp->name, name) == 0
655 && strcmp (tmp->owning_function, funcname) == 0)
666 /* The following function is called to patch up the offsets
667 for the statics contained in the COMMON block named
671 patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
673 COMMON_ENTRY_PTR entry;
675 blk->offset = offset; /* Keep this around for future use. */
677 entry = blk->entries;
679 while (entry != NULL)
681 SYMBOL_VALUE (entry->symbol) += offset;
682 SYMBOL_SECTION (entry->symbol) = secnum;
686 blk->secnum = secnum;
689 /* Patch all commons named "name" that need patching.Since COMMON
690 blocks occur with relative infrequency, we simply do a linear scan on
691 the name. Eventually, the best way to do this will be a
692 hashed-lookup. Secnum is the section number for the .bss section
693 (which is where common data lives). */
696 patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
699 SAVED_F77_COMMON_PTR tmp;
701 /* For blank common blocks, change the canonical reprsentation
704 if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
705 || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
708 name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
709 strcpy (name, BLANK_COMMON_NAME_LOCAL);
712 tmp = head_common_list;
716 if (COMMON_NEEDS_PATCHING (tmp))
717 if (strcmp (tmp->name, name) == 0)
718 patch_common_entries (tmp, offset, secnum);
725 /* This macro adds the symbol-number for the start of the function
726 (the symbol number of the .bf) referenced by symnum_fcn to a
727 list. This list, in reality should be a FIFO queue but since
728 #line pragmas sometimes cause line ranges to get messed up
729 we simply create a linear list. This list can then be searched
730 first by a queueing algorithm and upon failure fall back to
734 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
736 if (saved_bf_list == NULL) \
738 tmp_bf_ptr = allocate_saved_bf_node(); \
740 tmp_bf_ptr->symnum_bf = (bf_sym); \
741 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
742 tmp_bf_ptr->next = NULL; \
744 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
745 saved_bf_list_end = tmp_bf_ptr; \
749 tmp_bf_ptr = allocate_saved_bf_node(); \
751 tmp_bf_ptr->symnum_bf = (bf_sym); \
752 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
753 tmp_bf_ptr->next = NULL; \
755 saved_bf_list_end->next = tmp_bf_ptr; \
756 saved_bf_list_end = tmp_bf_ptr; \
760 /* This function frees the entire (.bf,function) list */
767 SAVED_BF_PTR tmp = saved_bf_list;
768 SAVED_BF_PTR next = NULL;
776 saved_bf_list = NULL;
780 int global_remote_debug;
785 get_bf_for_fcn (long the_function)
790 /* First use a simple queuing algorithm (i.e. look and see if the
791 item at the head of the queue is the one you want) */
793 if (saved_bf_list == NULL)
794 internal_error (__FILE__, __LINE__,
795 _("cannot get .bf node off empty list"));
797 if (current_head_bf_list != NULL)
798 if (current_head_bf_list->symnum_fcn == the_function)
800 if (global_remote_debug)
801 fprintf_unfiltered (gdb_stderr, "*");
803 tmp = current_head_bf_list;
804 current_head_bf_list = current_head_bf_list->next;
805 return (tmp->symnum_bf);
808 /* If the above did not work (probably because #line directives were
809 used in the sourcefile and they messed up our internal tables) we now do
810 the ugly linear scan */
812 if (global_remote_debug)
813 fprintf_unfiltered (gdb_stderr, "\ndefaulting to linear scan\n");
820 if (tmp->symnum_fcn == the_function)
822 if (global_remote_debug)
823 fprintf_unfiltered (gdb_stderr, "Found in %d probes\n", nprobes);
824 current_head_bf_list = tmp->next;
825 return (tmp->symnum_bf);
833 static SAVED_FUNCTION_PTR saved_function_list = NULL;
834 static SAVED_FUNCTION_PTR saved_function_list_end = NULL;
837 clear_function_list (void)
839 SAVED_FUNCTION_PTR tmp = saved_function_list;
840 SAVED_FUNCTION_PTR next = NULL;
849 saved_function_list = NULL;