1 /* Fortran language support routines for GDB, the GNU debugger.
3 Copyright (C) 1993-1996, 1998-2005, 2007-2012 Free Software
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"
39 /* Following is dubious stuff that had been in the xcoff reader. */
43 long line_offset; /* Line offset for function. */
44 struct saved_fcn *next;
48 struct saved_bf_symnum
50 long symnum_fcn; /* Symnum of function (i.e. .function
52 long symnum_bf; /* Symnum of .bf for this function. */
53 struct saved_bf_symnum *next;
56 typedef struct saved_fcn SAVED_FUNCTION, *SAVED_FUNCTION_PTR;
57 typedef struct saved_bf_symnum SAVED_BF, *SAVED_BF_PTR;
61 extern void _initialize_f_language (void);
63 static void clear_function_list (void);
64 static long get_bf_for_fcn (long);
65 static void clear_bf_list (void);
66 static void patch_all_commons_by_name (char *, CORE_ADDR, int);
67 static SAVED_F77_COMMON_PTR find_first_common_named (char *);
68 static void add_common_entry (struct symbol *);
69 static void add_common_block (char *, CORE_ADDR, int, char *);
70 static SAVED_FUNCTION *allocate_saved_function_node (void);
71 static SAVED_BF_PTR allocate_saved_bf_node (void);
72 static COMMON_ENTRY_PTR allocate_common_entry_node (void);
73 static SAVED_F77_COMMON_PTR allocate_saved_f77_common_node (void);
74 static void patch_common_entries (SAVED_F77_COMMON_PTR, CORE_ADDR, int);
77 static void f_printchar (int c, struct type *type, struct ui_file * stream);
78 static void f_emit_char (int c, struct type *type,
79 struct ui_file * stream, int quoter);
81 /* Return the encoding that should be used for the character type
85 f_get_encoding (struct type *type)
89 switch (TYPE_LENGTH (type))
92 encoding = target_charset (get_type_arch (type));
95 if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG)
96 encoding = "UTF-32BE";
98 encoding = "UTF-32LE";
102 error (_("unrecognized character type"));
108 /* Print the character C on STREAM as part of the contents of a literal
109 string whose delimiter is QUOTER. Note that that format for printing
110 characters and strings is language specific.
111 FIXME: This is a copy of the same function from c-exp.y. It should
112 be replaced with a true F77 version. */
115 f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
117 const char *encoding = f_get_encoding (type);
119 generic_emit_char (c, type, stream, quoter, encoding);
122 /* Implementation of la_printchar. */
125 f_printchar (int c, struct type *type, struct ui_file *stream)
127 fputs_filtered ("'", stream);
128 LA_EMIT_CHAR (c, type, stream, '\'');
129 fputs_filtered ("'", stream);
132 /* Print the character string STRING, printing at most LENGTH characters.
133 Printing stops early if the number hits print_max; repeat counts
134 are printed as appropriate. Print ellipses at the end if we
135 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
136 FIXME: This is a copy of the same function from c-exp.y. It should
137 be replaced with a true F77 version. */
140 f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
141 unsigned int length, const char *encoding, int force_ellipses,
142 const struct value_print_options *options)
144 const char *type_encoding = f_get_encoding (type);
146 if (TYPE_LENGTH (type) == 4)
147 fputs_filtered ("4_", stream);
149 if (!encoding || !*encoding)
150 encoding = type_encoding;
152 generic_printstr (stream, type, string, length, encoding,
153 force_ellipses, '\'', 0, options);
157 /* Table of operators and their precedences for printing expressions. */
159 static const struct op_print f_op_print_tab[] =
161 {"+", BINOP_ADD, PREC_ADD, 0},
162 {"+", UNOP_PLUS, PREC_PREFIX, 0},
163 {"-", BINOP_SUB, PREC_ADD, 0},
164 {"-", UNOP_NEG, PREC_PREFIX, 0},
165 {"*", BINOP_MUL, PREC_MUL, 0},
166 {"/", BINOP_DIV, PREC_MUL, 0},
167 {"DIV", BINOP_INTDIV, PREC_MUL, 0},
168 {"MOD", BINOP_REM, PREC_MUL, 0},
169 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
170 {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
171 {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
172 {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
173 {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
174 {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
175 {".LE.", BINOP_LEQ, PREC_ORDER, 0},
176 {".GE.", BINOP_GEQ, PREC_ORDER, 0},
177 {".GT.", BINOP_GTR, PREC_ORDER, 0},
178 {".LT.", BINOP_LESS, PREC_ORDER, 0},
179 {"**", UNOP_IND, PREC_PREFIX, 0},
180 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
184 enum f_primitive_types {
185 f_primitive_type_character,
186 f_primitive_type_logical,
187 f_primitive_type_logical_s1,
188 f_primitive_type_logical_s2,
189 f_primitive_type_logical_s8,
190 f_primitive_type_integer,
191 f_primitive_type_integer_s2,
192 f_primitive_type_real,
193 f_primitive_type_real_s8,
194 f_primitive_type_real_s16,
195 f_primitive_type_complex_s8,
196 f_primitive_type_complex_s16,
197 f_primitive_type_void,
202 f_language_arch_info (struct gdbarch *gdbarch,
203 struct language_arch_info *lai)
205 const struct builtin_f_type *builtin = builtin_f_type (gdbarch);
207 lai->string_char_type = builtin->builtin_character;
208 lai->primitive_type_vector
209 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
212 lai->primitive_type_vector [f_primitive_type_character]
213 = builtin->builtin_character;
214 lai->primitive_type_vector [f_primitive_type_logical]
215 = builtin->builtin_logical;
216 lai->primitive_type_vector [f_primitive_type_logical_s1]
217 = builtin->builtin_logical_s1;
218 lai->primitive_type_vector [f_primitive_type_logical_s2]
219 = builtin->builtin_logical_s2;
220 lai->primitive_type_vector [f_primitive_type_logical_s8]
221 = builtin->builtin_logical_s8;
222 lai->primitive_type_vector [f_primitive_type_real]
223 = builtin->builtin_real;
224 lai->primitive_type_vector [f_primitive_type_real_s8]
225 = builtin->builtin_real_s8;
226 lai->primitive_type_vector [f_primitive_type_real_s16]
227 = builtin->builtin_real_s16;
228 lai->primitive_type_vector [f_primitive_type_complex_s8]
229 = builtin->builtin_complex_s8;
230 lai->primitive_type_vector [f_primitive_type_complex_s16]
231 = builtin->builtin_complex_s16;
232 lai->primitive_type_vector [f_primitive_type_void]
233 = builtin->builtin_void;
235 lai->bool_type_symbol = "logical";
236 lai->bool_type_default = builtin->builtin_logical_s2;
239 /* Remove the modules separator :: from the default break list. */
242 f_word_break_characters (void)
250 retval = xstrdup (default_word_break_characters ());
251 s = strchr (retval, ':');
254 char *last_char = &s[strlen (s) - 1];
263 /* Consider the modules separator :: as a valid symbol name character
267 f_make_symbol_completion_list (char *text, char *word)
269 return default_make_symbol_completion_list_break_on (text, word, ":");
272 const struct language_defn f_language_defn =
281 &exp_descriptor_standard,
282 f_parse, /* parser */
283 f_error, /* parser error function */
285 f_printchar, /* Print character constant */
286 f_printstr, /* function to print string constant */
287 f_emit_char, /* Function to print a single character */
288 f_print_type, /* Print a type using appropriate syntax */
289 default_print_typedef, /* Print a typedef using appropriate syntax */
290 f_val_print, /* Print a value using appropriate syntax */
291 c_value_print, /* FIXME */
292 NULL, /* Language specific skip_trampoline */
293 NULL, /* name_of_this */
294 cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
295 basic_lookup_transparent_type,/* lookup_transparent_type */
296 NULL, /* Language specific symbol demangler */
297 NULL, /* Language specific
298 class_name_from_physname */
299 f_op_print_tab, /* expression operators for printing */
300 0, /* arrays are first-class (not c-style) */
301 1, /* String lower bound */
302 f_word_break_characters,
303 f_make_symbol_completion_list,
304 f_language_arch_info,
305 default_print_array_index,
306 default_pass_by_reference,
308 NULL, /* la_get_symbol_name_cmp */
309 iterate_over_symbols,
314 build_fortran_types (struct gdbarch *gdbarch)
316 struct builtin_f_type *builtin_f_type
317 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
319 builtin_f_type->builtin_void
320 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");
322 builtin_f_type->builtin_character
323 = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
325 builtin_f_type->builtin_logical_s1
326 = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
328 builtin_f_type->builtin_integer_s2
329 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
332 builtin_f_type->builtin_logical_s2
333 = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
336 builtin_f_type->builtin_logical_s8
337 = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
340 builtin_f_type->builtin_integer
341 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
344 builtin_f_type->builtin_logical
345 = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
348 builtin_f_type->builtin_real
349 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
351 builtin_f_type->builtin_real_s8
352 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
354 builtin_f_type->builtin_real_s16
355 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
358 builtin_f_type->builtin_complex_s8
359 = arch_complex_type (gdbarch, "complex*8",
360 builtin_f_type->builtin_real);
361 builtin_f_type->builtin_complex_s16
362 = arch_complex_type (gdbarch, "complex*16",
363 builtin_f_type->builtin_real_s8);
364 builtin_f_type->builtin_complex_s32
365 = arch_complex_type (gdbarch, "complex*32",
366 builtin_f_type->builtin_real_s16);
368 return builtin_f_type;
371 static struct gdbarch_data *f_type_data;
373 const struct builtin_f_type *
374 builtin_f_type (struct gdbarch *gdbarch)
376 return gdbarch_data (gdbarch, f_type_data);
380 _initialize_f_language (void)
382 f_type_data = gdbarch_data_register_post_init (build_fortran_types);
384 add_language (&f_language_defn);
389 allocate_saved_bf_node (void)
393 new = (SAVED_BF_PTR) xmalloc (sizeof (SAVED_BF));
397 static SAVED_FUNCTION *
398 allocate_saved_function_node (void)
402 new = (SAVED_FUNCTION *) xmalloc (sizeof (SAVED_FUNCTION));
406 static SAVED_F77_COMMON_PTR
407 allocate_saved_f77_common_node (void)
409 SAVED_F77_COMMON_PTR new;
411 new = (SAVED_F77_COMMON_PTR) xmalloc (sizeof (SAVED_F77_COMMON));
415 static COMMON_ENTRY_PTR
416 allocate_common_entry_node (void)
418 COMMON_ENTRY_PTR new;
420 new = (COMMON_ENTRY_PTR) xmalloc (sizeof (COMMON_ENTRY));
425 SAVED_F77_COMMON_PTR head_common_list = NULL; /* Ptr to 1st saved COMMON */
426 SAVED_F77_COMMON_PTR tail_common_list = NULL; /* Ptr to last saved COMMON */
427 SAVED_F77_COMMON_PTR current_common = NULL; /* Ptr to current COMMON */
430 static SAVED_BF_PTR saved_bf_list = NULL; /* Ptr to (.bf,function)
432 static SAVED_BF_PTR saved_bf_list_end = NULL; /* Ptr to above list's end */
433 static SAVED_BF_PTR current_head_bf_list = NULL; /* Current head of
436 static SAVED_BF_PTR tmp_bf_ptr; /* Generic temporary for use
439 /* The following function simply enters a given common block onto
440 the global common block chain. */
443 add_common_block (char *name, CORE_ADDR offset, int secnum, char *func_stab)
445 SAVED_F77_COMMON_PTR tmp;
446 char *c, *local_copy_func_stab;
448 /* If the COMMON block we are trying to add has a blank
449 name (i.e. "#BLNK_COM") then we set it to __BLANK
450 because the darn "#" character makes GDB's input
454 if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
455 || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
459 name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
460 strcpy (name, BLANK_COMMON_NAME_LOCAL);
463 tmp = allocate_saved_f77_common_node ();
465 local_copy_func_stab = xmalloc (strlen (func_stab) + 1);
466 strcpy (local_copy_func_stab, func_stab);
468 tmp->name = xmalloc (strlen (name) + 1);
470 /* local_copy_func_stab is a stabstring, let us first extract the
471 function name from the stab by NULLing out the ':' character. */
475 c = strchr (local_copy_func_stab, ':');
480 error (_("Malformed function STAB found in add_common_block()"));
483 tmp->owning_function = xmalloc (strlen (local_copy_func_stab) + 1);
485 strcpy (tmp->owning_function, local_copy_func_stab);
487 strcpy (tmp->name, name);
488 tmp->offset = offset;
491 tmp->secnum = secnum;
493 current_common = tmp;
495 if (head_common_list == NULL)
497 head_common_list = tail_common_list = tmp;
501 tail_common_list->next = tmp;
502 tail_common_list = tmp;
507 /* The following function simply enters a given common entry onto
508 the "current_common" block that has been saved away. */
512 add_common_entry (struct symbol *entry_sym_ptr)
514 COMMON_ENTRY_PTR tmp;
518 /* The order of this list is important, since
519 we expect the entries to appear in decl.
520 order when we later issue "info common" calls. */
522 tmp = allocate_common_entry_node ();
525 tmp->symbol = entry_sym_ptr;
527 if (current_common == NULL)
528 error (_("Attempt to add COMMON entry with no block open!"));
531 if (current_common->entries == NULL)
533 current_common->entries = tmp;
534 current_common->end_of_entries = tmp;
538 current_common->end_of_entries->next = tmp;
539 current_common->end_of_entries = tmp;
545 /* This routine finds the first encountred COMMON block named "name". */
548 static SAVED_F77_COMMON_PTR
549 find_first_common_named (char *name)
552 SAVED_F77_COMMON_PTR tmp;
554 tmp = head_common_list;
558 if (strcmp (tmp->name, name) == 0)
567 /* This routine finds the first encountred COMMON block named "name"
568 that belongs to function funcname. */
571 find_common_for_function (const char *name, const char *funcname)
574 SAVED_F77_COMMON_PTR tmp;
576 tmp = head_common_list;
580 if (strcmp (tmp->name, name) == 0
581 && strcmp (tmp->owning_function, funcname) == 0)
592 /* The following function is called to patch up the offsets
593 for the statics contained in the COMMON block named
597 patch_common_entries (SAVED_F77_COMMON_PTR blk, CORE_ADDR offset, int secnum)
599 COMMON_ENTRY_PTR entry;
601 blk->offset = offset; /* Keep this around for future use. */
603 entry = blk->entries;
605 while (entry != NULL)
607 SYMBOL_VALUE (entry->symbol) += offset;
608 SYMBOL_SECTION (entry->symbol) = secnum;
612 blk->secnum = secnum;
615 /* Patch all commons named "name" that need patching.Since COMMON
616 blocks occur with relative infrequency, we simply do a linear scan on
617 the name. Eventually, the best way to do this will be a
618 hashed-lookup. Secnum is the section number for the .bss section
619 (which is where common data lives). */
622 patch_all_commons_by_name (char *name, CORE_ADDR offset, int secnum)
625 SAVED_F77_COMMON_PTR tmp;
627 /* For blank common blocks, change the canonical reprsentation
630 if (strcmp (name, BLANK_COMMON_NAME_ORIGINAL) == 0
631 || strcmp (name, BLANK_COMMON_NAME_MF77) == 0)
634 name = alloca (strlen (BLANK_COMMON_NAME_LOCAL) + 1);
635 strcpy (name, BLANK_COMMON_NAME_LOCAL);
638 tmp = head_common_list;
642 if (COMMON_NEEDS_PATCHING (tmp))
643 if (strcmp (tmp->name, name) == 0)
644 patch_common_entries (tmp, offset, secnum);
651 /* This macro adds the symbol-number for the start of the function
652 (the symbol number of the .bf) referenced by symnum_fcn to a
653 list. This list, in reality should be a FIFO queue but since
654 #line pragmas sometimes cause line ranges to get messed up
655 we simply create a linear list. This list can then be searched
656 first by a queueing algorithm and upon failure fall back to
660 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
662 if (saved_bf_list == NULL) \
664 tmp_bf_ptr = allocate_saved_bf_node(); \
666 tmp_bf_ptr->symnum_bf = (bf_sym); \
667 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
668 tmp_bf_ptr->next = NULL; \
670 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
671 saved_bf_list_end = tmp_bf_ptr; \
675 tmp_bf_ptr = allocate_saved_bf_node(); \
677 tmp_bf_ptr->symnum_bf = (bf_sym); \
678 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
679 tmp_bf_ptr->next = NULL; \
681 saved_bf_list_end->next = tmp_bf_ptr; \
682 saved_bf_list_end = tmp_bf_ptr; \
686 /* This function frees the entire (.bf,function) list. */
693 SAVED_BF_PTR tmp = saved_bf_list;
694 SAVED_BF_PTR next = NULL;
702 saved_bf_list = NULL;
706 int global_remote_debug;
711 get_bf_for_fcn (long the_function)
716 /* First use a simple queuing algorithm (i.e. look and see if the
717 item at the head of the queue is the one you want). */
719 if (saved_bf_list == NULL)
720 internal_error (__FILE__, __LINE__,
721 _("cannot get .bf node off empty list"));
723 if (current_head_bf_list != NULL)
724 if (current_head_bf_list->symnum_fcn == the_function)
726 if (global_remote_debug)
727 fprintf_unfiltered (gdb_stderr, "*");
729 tmp = current_head_bf_list;
730 current_head_bf_list = current_head_bf_list->next;
731 return (tmp->symnum_bf);
734 /* If the above did not work (probably because #line directives were
735 used in the sourcefile and they messed up our internal tables) we now do
736 the ugly linear scan. */
738 if (global_remote_debug)
739 fprintf_unfiltered (gdb_stderr, "\ndefaulting to linear scan\n");
746 if (tmp->symnum_fcn == the_function)
748 if (global_remote_debug)
749 fprintf_unfiltered (gdb_stderr, "Found in %d probes\n", nprobes);
750 current_head_bf_list = tmp->next;
751 return (tmp->symnum_bf);
759 static SAVED_FUNCTION_PTR saved_function_list = NULL;
760 static SAVED_FUNCTION_PTR saved_function_list_end = NULL;
763 clear_function_list (void)
765 SAVED_FUNCTION_PTR tmp = saved_function_list;
766 SAVED_FUNCTION_PTR next = NULL;
775 saved_function_list = NULL;