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 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 ui_file
* stream
);
74 static void f_emit_char (int c
, struct ui_file
* stream
, int quoter
);
76 /* Print the character C on STREAM as part of the contents of a literal
77 string whose delimiter is QUOTER. Note that that format for printing
78 characters and strings is language specific.
79 FIXME: This is a copy of the same function from c-exp.y. It should
80 be replaced with a true F77 version. */
83 f_emit_char (int c
, struct ui_file
*stream
, int quoter
)
85 c
&= 0xFF; /* Avoid sign bit follies */
87 if (PRINT_LITERAL_FORM (c
))
89 if (c
== '\\' || c
== quoter
)
90 fputs_filtered ("\\", stream
);
91 fprintf_filtered (stream
, "%c", c
);
98 fputs_filtered ("\\n", stream
);
101 fputs_filtered ("\\b", stream
);
104 fputs_filtered ("\\t", stream
);
107 fputs_filtered ("\\f", stream
);
110 fputs_filtered ("\\r", stream
);
113 fputs_filtered ("\\e", stream
);
116 fputs_filtered ("\\a", stream
);
119 fprintf_filtered (stream
, "\\%.3o", (unsigned int) c
);
125 /* FIXME: This is a copy of the same function from c-exp.y. It should
126 be replaced with a true F77version. */
129 f_printchar (int c
, struct ui_file
*stream
)
131 fputs_filtered ("'", stream
);
132 LA_EMIT_CHAR (c
, stream
, '\'');
133 fputs_filtered ("'", stream
);
136 /* Print the character string STRING, printing at most LENGTH characters.
137 Printing stops early if the number hits print_max; repeat counts
138 are printed as appropriate. Print ellipses at the end if we
139 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
140 FIXME: This is a copy of the same function from c-exp.y. It should
141 be replaced with a true F77 version. */
144 f_printstr (struct ui_file
*stream
, const gdb_byte
*string
,
145 unsigned int length
, int width
, int force_ellipses
)
148 unsigned int things_printed
= 0;
154 fputs_filtered ("''", gdb_stdout
);
158 for (i
= 0; i
< length
&& things_printed
< print_max
; ++i
)
160 /* Position of the character we are examining
161 to see whether it is repeated. */
163 /* Number of repetitions we have detected so far. */
170 fputs_filtered (", ", stream
);
176 while (rep1
< length
&& string
[rep1
] == string
[i
])
182 if (reps
> repeat_count_threshold
)
187 fputs_filtered ("\\', ", stream
);
189 fputs_filtered ("', ", stream
);
192 f_printchar (string
[i
], stream
);
193 fprintf_filtered (stream
, " <repeats %u times>", reps
);
195 things_printed
+= repeat_count_threshold
;
203 fputs_filtered ("\\'", stream
);
205 fputs_filtered ("'", stream
);
208 LA_EMIT_CHAR (string
[i
], stream
, '"');
213 /* Terminate the quotes if necessary. */
217 fputs_filtered ("\\'", stream
);
219 fputs_filtered ("'", stream
);
222 if (force_ellipses
|| i
< length
)
223 fputs_filtered ("...", stream
);
227 /* Table of operators and their precedences for printing expressions. */
229 static const struct op_print f_op_print_tab
[] =
231 {"+", BINOP_ADD
, PREC_ADD
, 0},
232 {"+", UNOP_PLUS
, PREC_PREFIX
, 0},
233 {"-", BINOP_SUB
, PREC_ADD
, 0},
234 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
235 {"*", BINOP_MUL
, PREC_MUL
, 0},
236 {"/", BINOP_DIV
, PREC_MUL
, 0},
237 {"DIV", BINOP_INTDIV
, PREC_MUL
, 0},
238 {"MOD", BINOP_REM
, PREC_MUL
, 0},
239 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
240 {".OR.", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
241 {".AND.", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
242 {".NOT.", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
243 {".EQ.", BINOP_EQUAL
, PREC_EQUAL
, 0},
244 {".NE.", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
245 {".LE.", BINOP_LEQ
, PREC_ORDER
, 0},
246 {".GE.", BINOP_GEQ
, PREC_ORDER
, 0},
247 {".GT.", BINOP_GTR
, PREC_ORDER
, 0},
248 {".LT.", BINOP_LESS
, PREC_ORDER
, 0},
249 {"**", UNOP_IND
, PREC_PREFIX
, 0},
250 {"@", BINOP_REPEAT
, PREC_REPEAT
, 0},
254 enum f_primitive_types
{
255 f_primitive_type_character
,
256 f_primitive_type_logical
,
257 f_primitive_type_logical_s1
,
258 f_primitive_type_logical_s2
,
259 f_primitive_type_integer
,
260 f_primitive_type_integer_s2
,
261 f_primitive_type_real
,
262 f_primitive_type_real_s8
,
263 f_primitive_type_real_s16
,
264 f_primitive_type_complex_s8
,
265 f_primitive_type_complex_s16
,
266 f_primitive_type_void
,
271 f_language_arch_info (struct gdbarch
*gdbarch
,
272 struct language_arch_info
*lai
)
274 const struct builtin_f_type
*builtin
= builtin_f_type (gdbarch
);
276 lai
->string_char_type
= builtin
->builtin_character
;
277 lai
->primitive_type_vector
278 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_f_primitive_types
+ 1,
281 lai
->primitive_type_vector
[f_primitive_type_character
]
282 = builtin
->builtin_character
;
283 lai
->primitive_type_vector
[f_primitive_type_logical
]
284 = builtin
->builtin_logical
;
285 lai
->primitive_type_vector
[f_primitive_type_logical_s1
]
286 = builtin
->builtin_logical_s1
;
287 lai
->primitive_type_vector
[f_primitive_type_logical_s2
]
288 = builtin
->builtin_logical_s2
;
289 lai
->primitive_type_vector
[f_primitive_type_real
]
290 = builtin
->builtin_real
;
291 lai
->primitive_type_vector
[f_primitive_type_real_s8
]
292 = builtin
->builtin_real_s8
;
293 lai
->primitive_type_vector
[f_primitive_type_real_s16
]
294 = builtin
->builtin_real_s16
;
295 lai
->primitive_type_vector
[f_primitive_type_complex_s8
]
296 = builtin
->builtin_complex_s8
;
297 lai
->primitive_type_vector
[f_primitive_type_complex_s16
]
298 = builtin
->builtin_complex_s16
;
299 lai
->primitive_type_vector
[f_primitive_type_void
]
300 = builtin
->builtin_void
;
302 lai
->bool_type_symbol
= "logical";
303 lai
->bool_type_default
= builtin
->builtin_logical_s2
;
306 /* This is declared in c-lang.h but it is silly to import that file for what
307 is already just a hack. */
308 extern int c_value_print (struct value
*, struct ui_file
*, int,
309 enum val_prettyprint
);
311 const struct language_defn f_language_defn
=
319 &exp_descriptor_standard
,
320 f_parse
, /* parser */
321 f_error
, /* parser error function */
323 f_printchar
, /* Print character constant */
324 f_printstr
, /* function to print string constant */
325 f_emit_char
, /* Function to print a single character */
326 f_print_type
, /* Print a type using appropriate syntax */
327 f_val_print
, /* Print a value using appropriate syntax */
328 c_value_print
, /* FIXME */
329 NULL
, /* Language specific skip_trampoline */
330 NULL
, /* name_of_this */
331 basic_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
332 basic_lookup_transparent_type
,/* lookup_transparent_type */
333 NULL
, /* Language specific symbol demangler */
334 NULL
, /* Language specific class_name_from_physname */
335 f_op_print_tab
, /* expression operators for printing */
336 0, /* arrays are first-class (not c-style) */
337 1, /* String lower bound */
338 default_word_break_characters
,
339 default_make_symbol_completion_list
,
340 f_language_arch_info
,
341 default_print_array_index
,
342 default_pass_by_reference
,
347 build_fortran_types (struct gdbarch
*gdbarch
)
349 struct builtin_f_type
*builtin_f_type
350 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_f_type
);
352 builtin_f_type
->builtin_void
=
353 init_type (TYPE_CODE_VOID
, 1,
355 "VOID", (struct objfile
*) NULL
);
357 builtin_f_type
->builtin_character
=
358 init_type (TYPE_CODE_INT
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
360 "character", (struct objfile
*) NULL
);
362 builtin_f_type
->builtin_logical_s1
=
363 init_type (TYPE_CODE_BOOL
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
365 "logical*1", (struct objfile
*) NULL
);
367 builtin_f_type
->builtin_integer_s2
=
368 init_type (TYPE_CODE_INT
,
369 gdbarch_short_bit (gdbarch
) / TARGET_CHAR_BIT
,
370 0, "integer*2", (struct objfile
*) NULL
);
372 builtin_f_type
->builtin_logical_s2
=
373 init_type (TYPE_CODE_BOOL
,
374 gdbarch_short_bit (gdbarch
) / TARGET_CHAR_BIT
,
375 TYPE_FLAG_UNSIGNED
, "logical*2", (struct objfile
*) NULL
);
377 builtin_f_type
->builtin_integer
=
378 init_type (TYPE_CODE_INT
,
379 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
,
380 0, "integer", (struct objfile
*) NULL
);
382 builtin_f_type
->builtin_logical
=
383 init_type (TYPE_CODE_BOOL
,
384 gdbarch_int_bit (gdbarch
) / TARGET_CHAR_BIT
,
385 TYPE_FLAG_UNSIGNED
, "logical*4", (struct objfile
*) NULL
);
387 builtin_f_type
->builtin_real
=
388 init_type (TYPE_CODE_FLT
,
389 gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
,
391 "real", (struct objfile
*) NULL
);
393 builtin_f_type
->builtin_real_s8
=
394 init_type (TYPE_CODE_FLT
,
395 gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
397 "real*8", (struct objfile
*) NULL
);
399 builtin_f_type
->builtin_real_s16
=
400 init_type (TYPE_CODE_FLT
,
401 gdbarch_long_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
403 "real*16", (struct objfile
*) NULL
);
405 builtin_f_type
->builtin_complex_s8
=
406 init_type (TYPE_CODE_COMPLEX
,
407 2 * gdbarch_float_bit (gdbarch
) / TARGET_CHAR_BIT
,
409 "complex*8", (struct objfile
*) NULL
);
410 TYPE_TARGET_TYPE (builtin_f_type
->builtin_complex_s8
)
411 = builtin_f_type
->builtin_real
;
413 builtin_f_type
->builtin_complex_s16
=
414 init_type (TYPE_CODE_COMPLEX
,
415 2 * gdbarch_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
417 "complex*16", (struct objfile
*) NULL
);
418 TYPE_TARGET_TYPE (builtin_f_type
->builtin_complex_s16
)
419 = builtin_f_type
->builtin_real_s8
;
421 /* We have a new size == 4 double floats for the
422 complex*32 data type */
424 builtin_f_type
->builtin_complex_s32
=
425 init_type (TYPE_CODE_COMPLEX
,
426 2 * gdbarch_long_double_bit (gdbarch
) / TARGET_CHAR_BIT
,
428 "complex*32", (struct objfile
*) NULL
);
429 TYPE_TARGET_TYPE (builtin_f_type
->builtin_complex_s32
)
430 = builtin_f_type
->builtin_real_s16
;
432 return builtin_f_type
;
435 static struct gdbarch_data
*f_type_data
;
437 const struct builtin_f_type
*
438 builtin_f_type (struct gdbarch
*gdbarch
)
440 return gdbarch_data (gdbarch
, f_type_data
);
444 _initialize_f_language (void)
446 f_type_data
= gdbarch_data_register_post_init (build_fortran_types
);
448 add_language (&f_language_defn
);
453 allocate_saved_bf_node (void)
457 new = (SAVED_BF_PTR
) xmalloc (sizeof (SAVED_BF
));
461 static SAVED_FUNCTION
*
462 allocate_saved_function_node (void)
466 new = (SAVED_FUNCTION
*) xmalloc (sizeof (SAVED_FUNCTION
));
470 static SAVED_F77_COMMON_PTR
471 allocate_saved_f77_common_node (void)
473 SAVED_F77_COMMON_PTR
new;
475 new = (SAVED_F77_COMMON_PTR
) xmalloc (sizeof (SAVED_F77_COMMON
));
479 static COMMON_ENTRY_PTR
480 allocate_common_entry_node (void)
482 COMMON_ENTRY_PTR
new;
484 new = (COMMON_ENTRY_PTR
) xmalloc (sizeof (COMMON_ENTRY
));
489 SAVED_F77_COMMON_PTR head_common_list
= NULL
; /* Ptr to 1st saved COMMON */
490 SAVED_F77_COMMON_PTR tail_common_list
= NULL
; /* Ptr to last saved COMMON */
491 SAVED_F77_COMMON_PTR current_common
= NULL
; /* Ptr to current COMMON */
494 static SAVED_BF_PTR saved_bf_list
= NULL
; /* Ptr to (.bf,function)
496 static SAVED_BF_PTR saved_bf_list_end
= NULL
; /* Ptr to above list's end */
497 static SAVED_BF_PTR current_head_bf_list
= NULL
; /* Current head of above list
500 static SAVED_BF_PTR tmp_bf_ptr
; /* Generic temporary for use
503 /* The following function simply enters a given common block onto
504 the global common block chain */
507 add_common_block (char *name
, CORE_ADDR offset
, int secnum
, char *func_stab
)
509 SAVED_F77_COMMON_PTR tmp
;
510 char *c
, *local_copy_func_stab
;
512 /* If the COMMON block we are trying to add has a blank
513 name (i.e. "#BLNK_COM") then we set it to __BLANK
514 because the darn "#" character makes GDB's input
518 if (strcmp (name
, BLANK_COMMON_NAME_ORIGINAL
) == 0
519 || strcmp (name
, BLANK_COMMON_NAME_MF77
) == 0)
523 name
= alloca (strlen (BLANK_COMMON_NAME_LOCAL
) + 1);
524 strcpy (name
, BLANK_COMMON_NAME_LOCAL
);
527 tmp
= allocate_saved_f77_common_node ();
529 local_copy_func_stab
= xmalloc (strlen (func_stab
) + 1);
530 strcpy (local_copy_func_stab
, func_stab
);
532 tmp
->name
= xmalloc (strlen (name
) + 1);
534 /* local_copy_func_stab is a stabstring, let us first extract the
535 function name from the stab by NULLing out the ':' character. */
539 c
= strchr (local_copy_func_stab
, ':');
544 error (_("Malformed function STAB found in add_common_block()"));
547 tmp
->owning_function
= xmalloc (strlen (local_copy_func_stab
) + 1);
549 strcpy (tmp
->owning_function
, local_copy_func_stab
);
551 strcpy (tmp
->name
, name
);
552 tmp
->offset
= offset
;
555 tmp
->secnum
= secnum
;
557 current_common
= tmp
;
559 if (head_common_list
== NULL
)
561 head_common_list
= tail_common_list
= tmp
;
565 tail_common_list
->next
= tmp
;
566 tail_common_list
= tmp
;
571 /* The following function simply enters a given common entry onto
572 the "current_common" block that has been saved away. */
576 add_common_entry (struct symbol
*entry_sym_ptr
)
578 COMMON_ENTRY_PTR tmp
;
582 /* The order of this list is important, since
583 we expect the entries to appear in decl.
584 order when we later issue "info common" calls */
586 tmp
= allocate_common_entry_node ();
589 tmp
->symbol
= entry_sym_ptr
;
591 if (current_common
== NULL
)
592 error (_("Attempt to add COMMON entry with no block open!"));
595 if (current_common
->entries
== NULL
)
597 current_common
->entries
= tmp
;
598 current_common
->end_of_entries
= tmp
;
602 current_common
->end_of_entries
->next
= tmp
;
603 current_common
->end_of_entries
= tmp
;
609 /* This routine finds the first encountred COMMON block named "name" */
612 static SAVED_F77_COMMON_PTR
613 find_first_common_named (char *name
)
616 SAVED_F77_COMMON_PTR tmp
;
618 tmp
= head_common_list
;
622 if (strcmp (tmp
->name
, name
) == 0)
631 /* This routine finds the first encountred COMMON block named "name"
632 that belongs to function funcname */
635 find_common_for_function (char *name
, char *funcname
)
638 SAVED_F77_COMMON_PTR tmp
;
640 tmp
= head_common_list
;
644 if (strcmp (tmp
->name
, name
) == 0
645 && strcmp (tmp
->owning_function
, funcname
) == 0)
656 /* The following function is called to patch up the offsets
657 for the statics contained in the COMMON block named
661 patch_common_entries (SAVED_F77_COMMON_PTR blk
, CORE_ADDR offset
, int secnum
)
663 COMMON_ENTRY_PTR entry
;
665 blk
->offset
= offset
; /* Keep this around for future use. */
667 entry
= blk
->entries
;
669 while (entry
!= NULL
)
671 SYMBOL_VALUE (entry
->symbol
) += offset
;
672 SYMBOL_SECTION (entry
->symbol
) = secnum
;
676 blk
->secnum
= secnum
;
679 /* Patch all commons named "name" that need patching.Since COMMON
680 blocks occur with relative infrequency, we simply do a linear scan on
681 the name. Eventually, the best way to do this will be a
682 hashed-lookup. Secnum is the section number for the .bss section
683 (which is where common data lives). */
686 patch_all_commons_by_name (char *name
, CORE_ADDR offset
, int secnum
)
689 SAVED_F77_COMMON_PTR tmp
;
691 /* For blank common blocks, change the canonical reprsentation
694 if (strcmp (name
, BLANK_COMMON_NAME_ORIGINAL
) == 0
695 || strcmp (name
, BLANK_COMMON_NAME_MF77
) == 0)
698 name
= alloca (strlen (BLANK_COMMON_NAME_LOCAL
) + 1);
699 strcpy (name
, BLANK_COMMON_NAME_LOCAL
);
702 tmp
= head_common_list
;
706 if (COMMON_NEEDS_PATCHING (tmp
))
707 if (strcmp (tmp
->name
, name
) == 0)
708 patch_common_entries (tmp
, offset
, secnum
);
715 /* This macro adds the symbol-number for the start of the function
716 (the symbol number of the .bf) referenced by symnum_fcn to a
717 list. This list, in reality should be a FIFO queue but since
718 #line pragmas sometimes cause line ranges to get messed up
719 we simply create a linear list. This list can then be searched
720 first by a queueing algorithm and upon failure fall back to
724 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
726 if (saved_bf_list == NULL) \
728 tmp_bf_ptr = allocate_saved_bf_node(); \
730 tmp_bf_ptr->symnum_bf = (bf_sym); \
731 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
732 tmp_bf_ptr->next = NULL; \
734 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
735 saved_bf_list_end = tmp_bf_ptr; \
739 tmp_bf_ptr = allocate_saved_bf_node(); \
741 tmp_bf_ptr->symnum_bf = (bf_sym); \
742 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
743 tmp_bf_ptr->next = NULL; \
745 saved_bf_list_end->next = tmp_bf_ptr; \
746 saved_bf_list_end = tmp_bf_ptr; \
750 /* This function frees the entire (.bf,function) list */
757 SAVED_BF_PTR tmp
= saved_bf_list
;
758 SAVED_BF_PTR next
= NULL
;
766 saved_bf_list
= NULL
;
770 int global_remote_debug
;
775 get_bf_for_fcn (long the_function
)
780 /* First use a simple queuing algorithm (i.e. look and see if the
781 item at the head of the queue is the one you want) */
783 if (saved_bf_list
== NULL
)
784 internal_error (__FILE__
, __LINE__
,
785 _("cannot get .bf node off empty list"));
787 if (current_head_bf_list
!= NULL
)
788 if (current_head_bf_list
->symnum_fcn
== the_function
)
790 if (global_remote_debug
)
791 fprintf_unfiltered (gdb_stderr
, "*");
793 tmp
= current_head_bf_list
;
794 current_head_bf_list
= current_head_bf_list
->next
;
795 return (tmp
->symnum_bf
);
798 /* If the above did not work (probably because #line directives were
799 used in the sourcefile and they messed up our internal tables) we now do
800 the ugly linear scan */
802 if (global_remote_debug
)
803 fprintf_unfiltered (gdb_stderr
, "\ndefaulting to linear scan\n");
810 if (tmp
->symnum_fcn
== the_function
)
812 if (global_remote_debug
)
813 fprintf_unfiltered (gdb_stderr
, "Found in %d probes\n", nprobes
);
814 current_head_bf_list
= tmp
->next
;
815 return (tmp
->symnum_bf
);
823 static SAVED_FUNCTION_PTR saved_function_list
= NULL
;
824 static SAVED_FUNCTION_PTR saved_function_list_end
= NULL
;
827 clear_function_list (void)
829 SAVED_FUNCTION_PTR tmp
= saved_function_list
;
830 SAVED_FUNCTION_PTR next
= NULL
;
839 saved_function_list
= NULL
;