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, 2011 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
50 long symnum_bf
; /* Symnum of .bf for this function. */
51 struct saved_bf_symnum
*next
;
54 typedef struct saved_fcn SAVED_FUNCTION
, *SAVED_FUNCTION_PTR
;
55 typedef struct saved_bf_symnum SAVED_BF
, *SAVED_BF_PTR
;
59 extern void _initialize_f_language (void);
61 static void clear_function_list (void);
62 static long get_bf_for_fcn (long);
63 static void clear_bf_list (void);
64 static void patch_all_commons_by_name (char *, CORE_ADDR
, int);
65 static SAVED_F77_COMMON_PTR
find_first_common_named (char *);
66 static void add_common_entry (struct symbol
*);
67 static void add_common_block (char *, CORE_ADDR
, int, char *);
68 static SAVED_FUNCTION
*allocate_saved_function_node (void);
69 static SAVED_BF_PTR
allocate_saved_bf_node (void);
70 static COMMON_ENTRY_PTR
allocate_common_entry_node (void);
71 static SAVED_F77_COMMON_PTR
allocate_saved_f77_common_node (void);
72 static void patch_common_entries (SAVED_F77_COMMON_PTR
, CORE_ADDR
, int);
75 static void f_printchar (int c
, struct type
*type
, struct ui_file
* stream
);
76 static void f_emit_char (int c
, struct type
*type
,
77 struct ui_file
* stream
, int quoter
);
79 /* Print the character C on STREAM as part of the contents of a literal
80 string whose delimiter is QUOTER. Note that that format for printing
81 characters and strings is language specific.
82 FIXME: This is a copy of the same function from c-exp.y. It should
83 be replaced with a true F77 version. */
86 f_emit_char (int c
, struct type
*type
, struct ui_file
*stream
, int quoter
)
88 c
&= 0xFF; /* Avoid sign bit follies */
90 if (PRINT_LITERAL_FORM (c
))
92 if (c
== '\\' || c
== quoter
)
93 fputs_filtered ("\\", stream
);
94 fprintf_filtered (stream
, "%c", c
);
101 fputs_filtered ("\\n", stream
);
104 fputs_filtered ("\\b", stream
);
107 fputs_filtered ("\\t", stream
);
110 fputs_filtered ("\\f", stream
);
113 fputs_filtered ("\\r", stream
);
116 fputs_filtered ("\\e", stream
);
119 fputs_filtered ("\\a", stream
);
122 fprintf_filtered (stream
, "\\%.3o", (unsigned int) c
);
128 /* FIXME: This is a copy of the same function from c-exp.y. It should
129 be replaced with a true F77version. */
132 f_printchar (int c
, struct type
*type
, struct ui_file
*stream
)
134 fputs_filtered ("'", stream
);
135 LA_EMIT_CHAR (c
, type
, stream
, '\'');
136 fputs_filtered ("'", stream
);
139 /* Print the character string STRING, printing at most LENGTH characters.
140 Printing stops early if the number hits print_max; repeat counts
141 are printed as appropriate. Print ellipses at the end if we
142 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
143 FIXME: This is a copy of the same function from c-exp.y. It should
144 be replaced with a true F77 version. */
147 f_printstr (struct ui_file
*stream
, struct type
*type
, const gdb_byte
*string
,
148 unsigned int length
, const char *encoding
, int force_ellipses
,
149 const struct value_print_options
*options
)
152 unsigned int things_printed
= 0;
158 fputs_filtered ("''", gdb_stdout
);
162 for (i
= 0; i
< length
&& things_printed
< options
->print_max
; ++i
)
164 /* Position of the character we are examining
165 to see whether it is repeated. */
167 /* Number of repetitions we have detected so far. */
174 fputs_filtered (", ", stream
);
180 while (rep1
< length
&& string
[rep1
] == string
[i
])
186 if (reps
> options
->repeat_count_threshold
)
190 if (options
->inspect_it
)
191 fputs_filtered ("\\', ", stream
);
193 fputs_filtered ("', ", stream
);
196 f_printchar (string
[i
], type
, stream
);
197 fprintf_filtered (stream
, " <repeats %u times>", reps
);
199 things_printed
+= options
->repeat_count_threshold
;
206 if (options
->inspect_it
)
207 fputs_filtered ("\\'", stream
);
209 fputs_filtered ("'", stream
);
212 LA_EMIT_CHAR (string
[i
], type
, stream
, '"');
217 /* Terminate the quotes if necessary. */
220 if (options
->inspect_it
)
221 fputs_filtered ("\\'", stream
);
223 fputs_filtered ("'", stream
);
226 if (force_ellipses
|| i
< length
)
227 fputs_filtered ("...", stream
);
231 /* Table of operators and their precedences for printing expressions. */
233 static const struct op_print f_op_print_tab
[] =
235 {"+", BINOP_ADD
, PREC_ADD
, 0},
236 {"+", UNOP_PLUS
, PREC_PREFIX
, 0},
237 {"-", BINOP_SUB
, PREC_ADD
, 0},
238 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
239 {"*", BINOP_MUL
, PREC_MUL
, 0},
240 {"/", BINOP_DIV
, PREC_MUL
, 0},
241 {"DIV", BINOP_INTDIV
, PREC_MUL
, 0},
242 {"MOD", BINOP_REM
, PREC_MUL
, 0},
243 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
244 {".OR.", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
245 {".AND.", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
246 {".NOT.", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
247 {".EQ.", BINOP_EQUAL
, PREC_EQUAL
, 0},
248 {".NE.", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
249 {".LE.", BINOP_LEQ
, PREC_ORDER
, 0},
250 {".GE.", BINOP_GEQ
, PREC_ORDER
, 0},
251 {".GT.", BINOP_GTR
, PREC_ORDER
, 0},
252 {".LT.", BINOP_LESS
, PREC_ORDER
, 0},
253 {"**", UNOP_IND
, PREC_PREFIX
, 0},
254 {"@", BINOP_REPEAT
, PREC_REPEAT
, 0},
258 enum f_primitive_types
{
259 f_primitive_type_character
,
260 f_primitive_type_logical
,
261 f_primitive_type_logical_s1
,
262 f_primitive_type_logical_s2
,
263 f_primitive_type_logical_s8
,
264 f_primitive_type_integer
,
265 f_primitive_type_integer_s2
,
266 f_primitive_type_real
,
267 f_primitive_type_real_s8
,
268 f_primitive_type_real_s16
,
269 f_primitive_type_complex_s8
,
270 f_primitive_type_complex_s16
,
271 f_primitive_type_void
,
276 f_language_arch_info (struct gdbarch
*gdbarch
,
277 struct language_arch_info
*lai
)
279 const struct builtin_f_type
*builtin
= builtin_f_type (gdbarch
);
281 lai
->string_char_type
= builtin
->builtin_character
;
282 lai
->primitive_type_vector
283 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_f_primitive_types
+ 1,
286 lai
->primitive_type_vector
[f_primitive_type_character
]
287 = builtin
->builtin_character
;
288 lai
->primitive_type_vector
[f_primitive_type_logical
]
289 = builtin
->builtin_logical
;
290 lai
->primitive_type_vector
[f_primitive_type_logical_s1
]
291 = builtin
->builtin_logical_s1
;
292 lai
->primitive_type_vector
[f_primitive_type_logical_s2
]
293 = builtin
->builtin_logical_s2
;
294 lai
->primitive_type_vector
[f_primitive_type_logical_s8
]
295 = builtin
->builtin_logical_s8
;
296 lai
->primitive_type_vector
[f_primitive_type_real
]
297 = builtin
->builtin_real
;
298 lai
->primitive_type_vector
[f_primitive_type_real_s8
]
299 = builtin
->builtin_real_s8
;
300 lai
->primitive_type_vector
[f_primitive_type_real_s16
]
301 = builtin
->builtin_real_s16
;
302 lai
->primitive_type_vector
[f_primitive_type_complex_s8
]
303 = builtin
->builtin_complex_s8
;
304 lai
->primitive_type_vector
[f_primitive_type_complex_s16
]
305 = builtin
->builtin_complex_s16
;
306 lai
->primitive_type_vector
[f_primitive_type_void
]
307 = builtin
->builtin_void
;
309 lai
->bool_type_symbol
= "logical";
310 lai
->bool_type_default
= builtin
->builtin_logical_s2
;
313 /* Remove the modules separator :: from the default break list. */
316 f_word_break_characters (void)
324 retval
= xstrdup (default_word_break_characters ());
325 s
= strchr (retval
, ':');
328 char *last_char
= &s
[strlen (s
) - 1];
337 /* Consider the modules separator :: as a valid symbol name character
341 f_make_symbol_completion_list (char *text
, char *word
)
343 return default_make_symbol_completion_list_break_on (text
, word
, ":");
346 /* This is declared in c-lang.h but it is silly to import that file for what
347 is already just a hack. */
348 extern int c_value_print (struct value
*, struct ui_file
*,
349 const struct value_print_options
*);
351 const struct language_defn f_language_defn
=
360 &exp_descriptor_standard
,
361 f_parse
, /* parser */
362 f_error
, /* parser error function */
364 f_printchar
, /* Print character constant */
365 f_printstr
, /* function to print string constant */
366 f_emit_char
, /* Function to print a single character */
367 f_print_type
, /* Print a type using appropriate syntax */
368 default_print_typedef
, /* Print a typedef using appropriate syntax */
369 f_val_print
, /* Print a value using appropriate syntax */
370 c_value_print
, /* FIXME */
371 NULL
, /* Language specific skip_trampoline */
372 NULL
, /* name_of_this */
373 cp_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
374 basic_lookup_transparent_type
,/* lookup_transparent_type */
375 NULL
, /* Language specific symbol demangler */
376 NULL
, /* Language specific
377 class_name_from_physname */
378 f_op_print_tab
, /* expression operators for printing */
379 0, /* arrays are first-class (not c-style) */
380 1, /* String lower bound */
381 f_word_break_characters
,
382 f_make_symbol_completion_list
,
383 f_language_arch_info
,
384 default_print_array_index
,
385 default_pass_by_reference
,
391 build_fortran_types (struct gdbarch
*gdbarch
)
393 struct builtin_f_type
*builtin_f_type
394 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_f_type
);
396 builtin_f_type
->builtin_void
397 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "VOID");
399 builtin_f_type
->builtin_character
400 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
, 0, "character");
402 builtin_f_type
->builtin_logical_s1
403 = arch_boolean_type (gdbarch
, TARGET_CHAR_BIT
, 1, "logical*1");
405 builtin_f_type
->builtin_integer_s2
406 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
), 0,
409 builtin_f_type
->builtin_logical_s2
410 = arch_boolean_type (gdbarch
, gdbarch_short_bit (gdbarch
), 1,
413 builtin_f_type
->builtin_logical_s8
414 = arch_boolean_type (gdbarch
, gdbarch_long_long_bit (gdbarch
), 1,
417 builtin_f_type
->builtin_integer
418 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
), 0,
421 builtin_f_type
->builtin_logical
422 = arch_boolean_type (gdbarch
, gdbarch_int_bit (gdbarch
), 1,
425 builtin_f_type
->builtin_real
426 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
428 builtin_f_type
->builtin_real_s8
429 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
431 builtin_f_type
->builtin_real_s16
432 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
435 builtin_f_type
->builtin_complex_s8
436 = arch_complex_type (gdbarch
, "complex*8",
437 builtin_f_type
->builtin_real
);
438 builtin_f_type
->builtin_complex_s16
439 = arch_complex_type (gdbarch
, "complex*16",
440 builtin_f_type
->builtin_real_s8
);
441 builtin_f_type
->builtin_complex_s32
442 = arch_complex_type (gdbarch
, "complex*32",
443 builtin_f_type
->builtin_real_s16
);
445 return builtin_f_type
;
448 static struct gdbarch_data
*f_type_data
;
450 const struct builtin_f_type
*
451 builtin_f_type (struct gdbarch
*gdbarch
)
453 return gdbarch_data (gdbarch
, f_type_data
);
457 _initialize_f_language (void)
459 f_type_data
= gdbarch_data_register_post_init (build_fortran_types
);
461 add_language (&f_language_defn
);
466 allocate_saved_bf_node (void)
470 new = (SAVED_BF_PTR
) xmalloc (sizeof (SAVED_BF
));
474 static SAVED_FUNCTION
*
475 allocate_saved_function_node (void)
479 new = (SAVED_FUNCTION
*) xmalloc (sizeof (SAVED_FUNCTION
));
483 static SAVED_F77_COMMON_PTR
484 allocate_saved_f77_common_node (void)
486 SAVED_F77_COMMON_PTR
new;
488 new = (SAVED_F77_COMMON_PTR
) xmalloc (sizeof (SAVED_F77_COMMON
));
492 static COMMON_ENTRY_PTR
493 allocate_common_entry_node (void)
495 COMMON_ENTRY_PTR
new;
497 new = (COMMON_ENTRY_PTR
) xmalloc (sizeof (COMMON_ENTRY
));
502 SAVED_F77_COMMON_PTR head_common_list
= NULL
; /* Ptr to 1st saved COMMON */
503 SAVED_F77_COMMON_PTR tail_common_list
= NULL
; /* Ptr to last saved COMMON */
504 SAVED_F77_COMMON_PTR current_common
= NULL
; /* Ptr to current COMMON */
507 static SAVED_BF_PTR saved_bf_list
= NULL
; /* Ptr to (.bf,function)
509 static SAVED_BF_PTR saved_bf_list_end
= NULL
; /* Ptr to above list's end */
510 static SAVED_BF_PTR current_head_bf_list
= NULL
; /* Current head of
513 static SAVED_BF_PTR tmp_bf_ptr
; /* Generic temporary for use
516 /* The following function simply enters a given common block onto
517 the global common block chain */
520 add_common_block (char *name
, CORE_ADDR offset
, int secnum
, char *func_stab
)
522 SAVED_F77_COMMON_PTR tmp
;
523 char *c
, *local_copy_func_stab
;
525 /* If the COMMON block we are trying to add has a blank
526 name (i.e. "#BLNK_COM") then we set it to __BLANK
527 because the darn "#" character makes GDB's input
531 if (strcmp (name
, BLANK_COMMON_NAME_ORIGINAL
) == 0
532 || strcmp (name
, BLANK_COMMON_NAME_MF77
) == 0)
536 name
= alloca (strlen (BLANK_COMMON_NAME_LOCAL
) + 1);
537 strcpy (name
, BLANK_COMMON_NAME_LOCAL
);
540 tmp
= allocate_saved_f77_common_node ();
542 local_copy_func_stab
= xmalloc (strlen (func_stab
) + 1);
543 strcpy (local_copy_func_stab
, func_stab
);
545 tmp
->name
= xmalloc (strlen (name
) + 1);
547 /* local_copy_func_stab is a stabstring, let us first extract the
548 function name from the stab by NULLing out the ':' character. */
552 c
= strchr (local_copy_func_stab
, ':');
557 error (_("Malformed function STAB found in add_common_block()"));
560 tmp
->owning_function
= xmalloc (strlen (local_copy_func_stab
) + 1);
562 strcpy (tmp
->owning_function
, local_copy_func_stab
);
564 strcpy (tmp
->name
, name
);
565 tmp
->offset
= offset
;
568 tmp
->secnum
= secnum
;
570 current_common
= tmp
;
572 if (head_common_list
== NULL
)
574 head_common_list
= tail_common_list
= tmp
;
578 tail_common_list
->next
= tmp
;
579 tail_common_list
= tmp
;
584 /* The following function simply enters a given common entry onto
585 the "current_common" block that has been saved away. */
589 add_common_entry (struct symbol
*entry_sym_ptr
)
591 COMMON_ENTRY_PTR tmp
;
595 /* The order of this list is important, since
596 we expect the entries to appear in decl.
597 order when we later issue "info common" calls */
599 tmp
= allocate_common_entry_node ();
602 tmp
->symbol
= entry_sym_ptr
;
604 if (current_common
== NULL
)
605 error (_("Attempt to add COMMON entry with no block open!"));
608 if (current_common
->entries
== NULL
)
610 current_common
->entries
= tmp
;
611 current_common
->end_of_entries
= tmp
;
615 current_common
->end_of_entries
->next
= tmp
;
616 current_common
->end_of_entries
= tmp
;
622 /* This routine finds the first encountred COMMON block named "name" */
625 static SAVED_F77_COMMON_PTR
626 find_first_common_named (char *name
)
629 SAVED_F77_COMMON_PTR tmp
;
631 tmp
= head_common_list
;
635 if (strcmp (tmp
->name
, name
) == 0)
644 /* This routine finds the first encountred COMMON block named "name"
645 that belongs to function funcname */
648 find_common_for_function (char *name
, char *funcname
)
651 SAVED_F77_COMMON_PTR tmp
;
653 tmp
= head_common_list
;
657 if (strcmp (tmp
->name
, name
) == 0
658 && strcmp (tmp
->owning_function
, funcname
) == 0)
669 /* The following function is called to patch up the offsets
670 for the statics contained in the COMMON block named
674 patch_common_entries (SAVED_F77_COMMON_PTR blk
, CORE_ADDR offset
, int secnum
)
676 COMMON_ENTRY_PTR entry
;
678 blk
->offset
= offset
; /* Keep this around for future use. */
680 entry
= blk
->entries
;
682 while (entry
!= NULL
)
684 SYMBOL_VALUE (entry
->symbol
) += offset
;
685 SYMBOL_SECTION (entry
->symbol
) = secnum
;
689 blk
->secnum
= secnum
;
692 /* Patch all commons named "name" that need patching.Since COMMON
693 blocks occur with relative infrequency, we simply do a linear scan on
694 the name. Eventually, the best way to do this will be a
695 hashed-lookup. Secnum is the section number for the .bss section
696 (which is where common data lives). */
699 patch_all_commons_by_name (char *name
, CORE_ADDR offset
, int secnum
)
702 SAVED_F77_COMMON_PTR tmp
;
704 /* For blank common blocks, change the canonical reprsentation
707 if (strcmp (name
, BLANK_COMMON_NAME_ORIGINAL
) == 0
708 || strcmp (name
, BLANK_COMMON_NAME_MF77
) == 0)
711 name
= alloca (strlen (BLANK_COMMON_NAME_LOCAL
) + 1);
712 strcpy (name
, BLANK_COMMON_NAME_LOCAL
);
715 tmp
= head_common_list
;
719 if (COMMON_NEEDS_PATCHING (tmp
))
720 if (strcmp (tmp
->name
, name
) == 0)
721 patch_common_entries (tmp
, offset
, secnum
);
728 /* This macro adds the symbol-number for the start of the function
729 (the symbol number of the .bf) referenced by symnum_fcn to a
730 list. This list, in reality should be a FIFO queue but since
731 #line pragmas sometimes cause line ranges to get messed up
732 we simply create a linear list. This list can then be searched
733 first by a queueing algorithm and upon failure fall back to
737 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
739 if (saved_bf_list == NULL) \
741 tmp_bf_ptr = allocate_saved_bf_node(); \
743 tmp_bf_ptr->symnum_bf = (bf_sym); \
744 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
745 tmp_bf_ptr->next = NULL; \
747 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
748 saved_bf_list_end = tmp_bf_ptr; \
752 tmp_bf_ptr = allocate_saved_bf_node(); \
754 tmp_bf_ptr->symnum_bf = (bf_sym); \
755 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
756 tmp_bf_ptr->next = NULL; \
758 saved_bf_list_end->next = tmp_bf_ptr; \
759 saved_bf_list_end = tmp_bf_ptr; \
763 /* This function frees the entire (.bf,function) list */
770 SAVED_BF_PTR tmp
= saved_bf_list
;
771 SAVED_BF_PTR next
= NULL
;
779 saved_bf_list
= NULL
;
783 int global_remote_debug
;
788 get_bf_for_fcn (long the_function
)
793 /* First use a simple queuing algorithm (i.e. look and see if the
794 item at the head of the queue is the one you want) */
796 if (saved_bf_list
== NULL
)
797 internal_error (__FILE__
, __LINE__
,
798 _("cannot get .bf node off empty list"));
800 if (current_head_bf_list
!= NULL
)
801 if (current_head_bf_list
->symnum_fcn
== the_function
)
803 if (global_remote_debug
)
804 fprintf_unfiltered (gdb_stderr
, "*");
806 tmp
= current_head_bf_list
;
807 current_head_bf_list
= current_head_bf_list
->next
;
808 return (tmp
->symnum_bf
);
811 /* If the above did not work (probably because #line directives were
812 used in the sourcefile and they messed up our internal tables) we now do
813 the ugly linear scan */
815 if (global_remote_debug
)
816 fprintf_unfiltered (gdb_stderr
, "\ndefaulting to linear scan\n");
823 if (tmp
->symnum_fcn
== the_function
)
825 if (global_remote_debug
)
826 fprintf_unfiltered (gdb_stderr
, "Found in %d probes\n", nprobes
);
827 current_head_bf_list
= tmp
->next
;
828 return (tmp
->symnum_bf
);
836 static SAVED_FUNCTION_PTR saved_function_list
= NULL
;
837 static SAVED_FUNCTION_PTR saved_function_list_end
= NULL
;
840 clear_function_list (void)
842 SAVED_FUNCTION_PTR tmp
= saved_function_list
;
843 SAVED_FUNCTION_PTR next
= NULL
;
852 saved_function_list
= NULL
;