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;
156 fputs_filtered ("''", gdb_stdout);
160 for (i = 0; i < length && things_printed < options->print_max; ++i)
162 /* Position of the character we are examining
163 to see whether it is repeated. */
165 /* Number of repetitions we have detected so far. */
172 fputs_filtered (", ", stream);
178 while (rep1 < length && string[rep1] == string[i])
184 if (reps > options->repeat_count_threshold)
188 if (options->inspect_it)
189 fputs_filtered ("\\', ", stream);
191 fputs_filtered ("', ", stream);
194 f_printchar (string[i], type, stream);
195 fprintf_filtered (stream, " <repeats %u times>", reps);
197 things_printed += options->repeat_count_threshold;
204 if (options->inspect_it)
205 fputs_filtered ("\\'", stream);
207 fputs_filtered ("'", stream);
210 LA_EMIT_CHAR (string[i], type, stream, '"');
215 /* Terminate the quotes if necessary. */
218 if (options->inspect_it)
219 fputs_filtered ("\\'", stream);
221 fputs_filtered ("'", stream);
224 if (force_ellipses || i < length)
225 fputs_filtered ("...", stream);
229 /* Table of operators and their precedences for printing expressions. */
231 static const struct op_print f_op_print_tab[] =
233 {"+", BINOP_ADD, PREC_ADD, 0},
234 {"+", UNOP_PLUS, PREC_PREFIX, 0},
235 {"-", BINOP_SUB, PREC_ADD, 0},
236 {"-", UNOP_NEG, PREC_PREFIX, 0},
237 {"*", BINOP_MUL, PREC_MUL, 0},
238 {"/", BINOP_DIV, PREC_MUL, 0},
239 {"DIV", BINOP_INTDIV, PREC_MUL, 0},
240 {"MOD", BINOP_REM, PREC_MUL, 0},
241 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
242 {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
243 {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
244 {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
245 {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
246 {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
247 {".LE.", BINOP_LEQ, PREC_ORDER, 0},
248 {".GE.", BINOP_GEQ, PREC_ORDER, 0},
249 {".GT.", BINOP_GTR, PREC_ORDER, 0},
250 {".LT.", BINOP_LESS, PREC_ORDER, 0},
251 {"**", UNOP_IND, PREC_PREFIX, 0},
252 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
256 enum f_primitive_types {
257 f_primitive_type_character,
258 f_primitive_type_logical,
259 f_primitive_type_logical_s1,
260 f_primitive_type_logical_s2,
261 f_primitive_type_logical_s8,
262 f_primitive_type_integer,
263 f_primitive_type_integer_s2,
264 f_primitive_type_real,
265 f_primitive_type_real_s8,
266 f_primitive_type_real_s16,
267 f_primitive_type_complex_s8,
268 f_primitive_type_complex_s16,
269 f_primitive_type_void,
274 f_language_arch_info (struct gdbarch *gdbarch,
275 struct language_arch_info *lai)
277 const struct builtin_f_type *builtin = builtin_f_type (gdbarch);
279 lai->string_char_type = builtin->builtin_character;
280 lai->primitive_type_vector
281 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
284 lai->primitive_type_vector [f_primitive_type_character]
285 = builtin->builtin_character;
286 lai->primitive_type_vector [f_primitive_type_logical]
287 = builtin->builtin_logical;
288 lai->primitive_type_vector [f_primitive_type_logical_s1]
289 = builtin->builtin_logical_s1;
290 lai->primitive_type_vector [f_primitive_type_logical_s2]
291 = builtin->builtin_logical_s2;
292 lai->primitive_type_vector [f_primitive_type_logical_s8]
293 = builtin->builtin_logical_s8;
294 lai->primitive_type_vector [f_primitive_type_real]
295 = builtin->builtin_real;
296 lai->primitive_type_vector [f_primitive_type_real_s8]
297 = builtin->builtin_real_s8;
298 lai->primitive_type_vector [f_primitive_type_real_s16]
299 = builtin->builtin_real_s16;
300 lai->primitive_type_vector [f_primitive_type_complex_s8]
301 = builtin->builtin_complex_s8;
302 lai->primitive_type_vector [f_primitive_type_complex_s16]
303 = builtin->builtin_complex_s16;
304 lai->primitive_type_vector [f_primitive_type_void]
305 = builtin->builtin_void;
307 lai->bool_type_symbol = "logical";
308 lai->bool_type_default = builtin->builtin_logical_s2;
311 /* This is declared in c-lang.h but it is silly to import that file for what
312 is already just a hack. */
313 extern int c_value_print (struct value *, struct ui_file *,
314 const struct value_print_options *);
316 const struct language_defn f_language_defn =
325 &exp_descriptor_standard,
326 f_parse, /* parser */
327 f_error, /* parser error function */
329 f_printchar, /* Print character constant */
330 f_printstr, /* function to print string constant */
331 f_emit_char, /* Function to print a single character */
332 f_print_type, /* Print a type using appropriate syntax */
333 default_print_typedef, /* Print a typedef using appropriate syntax */
334 f_val_print, /* Print a value using appropriate syntax */
335 c_value_print, /* FIXME */
336 NULL, /* Language specific skip_trampoline */
337 NULL, /* name_of_this */
338 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
339 basic_lookup_transparent_type,/* lookup_transparent_type */
340 NULL, /* Language specific symbol demangler */
341 NULL, /* Language specific class_name_from_physname */
342 f_op_print_tab, /* expression operators for printing */
343 0, /* arrays are first-class (not c-style) */
344 1, /* String lower bound */
345 default_word_break_characters,
346 default_make_symbol_completion_list,
347 f_language_arch_info,
348 default_print_array_index,
349 default_pass_by_reference,
355 build_fortran_types (struct gdbarch *gdbarch)
357 struct builtin_f_type *builtin_f_type
358 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
360 builtin_f_type->builtin_void
361 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");
363 builtin_f_type->builtin_character
364 = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
366 builtin_f_type->builtin_logical_s1
367 = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
369 builtin_f_type->builtin_integer_s2
370 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
373 builtin_f_type->builtin_logical_s2
374 = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
377 builtin_f_type->builtin_logical_s8
378 = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
381 builtin_f_type->builtin_integer
382 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
385 builtin_f_type->builtin_logical
386 = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
389 builtin_f_type->builtin_real
390 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
392 builtin_f_type->builtin_real_s8
393 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
395 builtin_f_type->builtin_real_s16
396 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
399 builtin_f_type->builtin_complex_s8
400 = arch_complex_type (gdbarch, "complex*8",
401 builtin_f_type->builtin_real);
402 builtin_f_type->builtin_complex_s16
403 = arch_complex_type (gdbarch, "complex*16",
404 builtin_f_type->builtin_real_s8);
405 builtin_f_type->builtin_complex_s32
406 = arch_complex_type (gdbarch, "complex*32",
407 builtin_f_type->builtin_real_s16);
409 return builtin_f_type;
412 static struct gdbarch_data *f_type_data;
414 const struct builtin_f_type *
415 builtin_f_type (struct gdbarch *gdbarch)
417 return gdbarch_data (gdbarch, f_type_data);
421 _initialize_f_language (void)
423 f_type_data = gdbarch_data_register_post_init (build_fortran_types);
425 add_language (&f_language_defn);
430 allocate_saved_bf_node (void)
434 new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
438 static SAVED_FUNCTION *
439 allocate_saved_function_node (void)
443 new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
447 static SAVED_F77_COMMON_PTR
448 allocate_saved_f77_common_node (void)
450 SAVED_F77_COMMON_PTR new;
452 new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
456 static COMMON_ENTRY_PTR
457 allocate_common_entry_node (void)
459 COMMON_ENTRY_PTR new;
461 new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
466 SAVED_F77_COMMON_PTR head_common_list = NULL; /* Ptr to 1st saved COMMON */
467 SAVED_F77_COMMON_PTR tail_common_list = NULL; /* Ptr to last saved COMMON */
468 SAVED_F77_COMMON_PTR current_common = NULL; /* Ptr to current COMMON */
471 static SAVED_BF_PTR saved_bf_list = NULL; /* Ptr to (.bf,function)
473 static SAVED_BF_PTR saved_bf_list_end = NULL; /* Ptr to above list's end */
474 static SAVED_BF_PTR current_head_bf_list = NULL; /* Current head of above list
477 static SAVED_BF_PTR tmp_bf_ptr; /* Generic temporary for use
480 /* The following function simply enters a given common block onto
481 the global common block chain */
484 add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
486 SAVED_F77_COMMON_PTR tmp;
487 char *c, *local_copy_func_stab;
489 /* If the COMMON block we are trying to add has a blank
490 name (i.e. "#BLNK_COM") then we set it to __BLANK
491 because the darn "#" character makes GDB's input
495 if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
496 || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
500 name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
501 strcpy (name, BLANK_COMMON_NAME_LOCAL);
504 tmp = allocate_saved_f77_common_node ();
506 local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
507 strcpy (local_copy_func_stab, func_stab);
509 tmp->name = xmalloc (strlen (name) + 1);
511 /* local_copy_func_stab is a stabstring, let us first extract the
512 function name from the stab by NULLing out the ':' character. */
516 c = strchr (local_copy_func_stab, ':');
521 error (_("Malformed function STAB found in add_common_block()"));
524 tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);
526 strcpy (tmp->owning_function, local_copy_func_stab);
528 strcpy (tmp->name, name);
529 tmp->offset = offset;
532 tmp->secnum = secnum;
534 current_common = tmp;
536 if (head_common_list == NULL)
538 head_common_list = tail_common_list = tmp;
542 tail_common_list->next = tmp;
543 tail_common_list = tmp;
548 /* The following function simply enters a given common entry onto
549 the "current_common" block that has been saved away. */
553 add_common_entry (struct symbol *entry_sym_ptr)
555 COMMON_ENTRY_PTR tmp;
559 /* The order of this list is important, since
560 we expect the entries to appear in decl.
561 order when we later issue "info common" calls */
563 tmp = allocate_common_entry_node ();
566 tmp->symbol = entry_sym_ptr;
568 if (current_common == NULL)
569 error (_("Attempt to add COMMON entry with no block open!"));
572 if (current_common->entries == NULL)
574 current_common->entries = tmp;
575 current_common->end_of_entries = tmp;
579 current_common->end_of_entries->next = tmp;
580 current_common->end_of_entries = tmp;
586 /* This routine finds the first encountred COMMON block named "name" */
589 static SAVED_F77_COMMON_PTR
590 find_first_common_named (char *name)
593 SAVED_F77_COMMON_PTR tmp;
595 tmp = head_common_list;
599 if (strcmp (tmp->name, name) == 0)
608 /* This routine finds the first encountred COMMON block named "name"
609 that belongs to function funcname */
612 find_common_for_function (char *name, char *funcname)
615 SAVED_F77_COMMON_PTR tmp;
617 tmp = head_common_list;
621 if (strcmp (tmp->name, name) == 0
622 && strcmp (tmp->owning_function, funcname) == 0)
633 /* The following function is called to patch up the offsets
634 for the statics contained in the COMMON block named
638 patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
640 COMMON_ENTRY_PTR entry;
642 blk->offset = offset; /* Keep this around for future use. */
644 entry = blk->entries;
646 while (entry != NULL)
648 SYMBOL_VALUE (entry->symbol) += offset;
649 SYMBOL_SECTION (entry->symbol) = secnum;
653 blk->secnum = secnum;
656 /* Patch all commons named "name" that need patching.Since COMMON
657 blocks occur with relative infrequency, we simply do a linear scan on
658 the name. Eventually, the best way to do this will be a
659 hashed-lookup. Secnum is the section number for the .bss section
660 (which is where common data lives). */
663 patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
666 SAVED_F77_COMMON_PTR tmp;
668 /* For blank common blocks, change the canonical reprsentation
671 if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
672 || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
675 name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
676 strcpy (name, BLANK_COMMON_NAME_LOCAL);
679 tmp = head_common_list;
683 if (COMMON_NEEDS_PATCHING (tmp))
684 if (strcmp (tmp->name, name) == 0)
685 patch_common_entries (tmp, offset, secnum);
692 /* This macro adds the symbol-number for the start of the function
693 (the symbol number of the .bf) referenced by symnum_fcn to a
694 list. This list, in reality should be a FIFO queue but since
695 #line pragmas sometimes cause line ranges to get messed up
696 we simply create a linear list. This list can then be searched
697 first by a queueing algorithm and upon failure fall back to
701 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
703 if (saved_bf_list == NULL) \
705 tmp_bf_ptr = allocate_saved_bf_node(); \
707 tmp_bf_ptr->symnum_bf = (bf_sym); \
708 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
709 tmp_bf_ptr->next = NULL; \
711 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
712 saved_bf_list_end = tmp_bf_ptr; \
716 tmp_bf_ptr = allocate_saved_bf_node(); \
718 tmp_bf_ptr->symnum_bf = (bf_sym); \
719 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
720 tmp_bf_ptr->next = NULL; \
722 saved_bf_list_end->next = tmp_bf_ptr; \
723 saved_bf_list_end = tmp_bf_ptr; \
727 /* This function frees the entire (.bf,function) list */
734 SAVED_BF_PTR tmp = saved_bf_list;
735 SAVED_BF_PTR next = NULL;
743 saved_bf_list = NULL;
747 int global_remote_debug;
752 get_bf_for_fcn (long the_function)
757 /* First use a simple queuing algorithm (i.e. look and see if the
758 item at the head of the queue is the one you want) */
760 if (saved_bf_list == NULL)
761 internal_error (__FILE__, __LINE__,
762 _("cannot get .bf node off empty list"));
764 if (current_head_bf_list != NULL)
765 if (current_head_bf_list->symnum_fcn == the_function)
767 if (global_remote_debug)
768 fprintf_unfiltered (gdb_stderr, "*");
770 tmp = current_head_bf_list;
771 current_head_bf_list = current_head_bf_list->next;
772 return (tmp->symnum_bf);
775 /* If the above did not work (probably because #line directives were
776 used in the sourcefile and they messed up our internal tables) we now do
777 the ugly linear scan */
779 if (global_remote_debug)
780 fprintf_unfiltered (gdb_stderr, "\ndefaulting to linear scan\n");
787 if (tmp->symnum_fcn == the_function)
789 if (global_remote_debug)
790 fprintf_unfiltered (gdb_stderr, "Found in %d probes\n", nprobes);
791 current_head_bf_list = tmp->next;
792 return (tmp->symnum_bf);
800 static SAVED_FUNCTION_PTR saved_function_list = NULL;
801 static SAVED_FUNCTION_PTR saved_function_list_end = NULL;
804 clear_function_list (void)
806 SAVED_FUNCTION_PTR tmp = saved_function_list;
807 SAVED_FUNCTION_PTR next = NULL;
816 saved_function_list = NULL;