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"
38 /* Following is dubious stuff that had been in the xcoff reader. */
42 long line_offset
; /* Line offset for function. */
43 struct saved_fcn
*next
;
47 struct saved_bf_symnum
49 long symnum_fcn
; /* Symnum of function (i.e. .function
51 long symnum_bf
; /* Symnum of .bf for this function. */
52 struct saved_bf_symnum
*next
;
55 typedef struct saved_fcn SAVED_FUNCTION
, *SAVED_FUNCTION_PTR
;
56 typedef struct saved_bf_symnum SAVED_BF
, *SAVED_BF_PTR
;
60 extern void _initialize_f_language (void);
62 static void clear_function_list (void);
63 static long get_bf_for_fcn (long);
64 static void clear_bf_list (void);
65 static void patch_all_commons_by_name (char *, CORE_ADDR
, int);
66 static SAVED_F77_COMMON_PTR
find_first_common_named (char *);
67 static void add_common_entry (struct symbol
*);
68 static void add_common_block (char *, CORE_ADDR
, int, char *);
69 static SAVED_FUNCTION
*allocate_saved_function_node (void);
70 static SAVED_BF_PTR
allocate_saved_bf_node (void);
71 static COMMON_ENTRY_PTR
allocate_common_entry_node (void);
72 static SAVED_F77_COMMON_PTR
allocate_saved_f77_common_node (void);
73 static void patch_common_entries (SAVED_F77_COMMON_PTR
, CORE_ADDR
, int);
76 static void f_printchar (int c
, struct type
*type
, struct ui_file
* stream
);
77 static void f_emit_char (int c
, struct type
*type
,
78 struct ui_file
* stream
, int quoter
);
80 /* Return the encoding that should be used for the character type
84 f_get_encoding (struct type
*type
)
88 switch (TYPE_LENGTH (type
))
91 encoding
= target_charset (get_type_arch (type
));
94 if (gdbarch_byte_order (get_type_arch (type
)) == BFD_ENDIAN_BIG
)
95 encoding
= "UTF-32BE";
97 encoding
= "UTF-32LE";
101 error (_("unrecognized character type"));
107 /* Print the character C on STREAM as part of the contents of a literal
108 string whose delimiter is QUOTER. Note that that format for printing
109 characters and strings is language specific.
110 FIXME: This is a copy of the same function from c-exp.y. It should
111 be replaced with a true F77 version. */
114 f_emit_char (int c
, struct type
*type
, struct ui_file
*stream
, int quoter
)
116 const char *encoding
= f_get_encoding (type
);
118 generic_emit_char (c
, type
, stream
, quoter
, encoding
);
121 /* Implementation of la_printchar. */
124 f_printchar (int c
, struct type
*type
, struct ui_file
*stream
)
126 fputs_filtered ("'", stream
);
127 LA_EMIT_CHAR (c
, type
, stream
, '\'');
128 fputs_filtered ("'", stream
);
131 /* Print the character string STRING, printing at most LENGTH characters.
132 Printing stops early if the number hits print_max; repeat counts
133 are printed as appropriate. Print ellipses at the end if we
134 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
135 FIXME: This is a copy of the same function from c-exp.y. It should
136 be replaced with a true F77 version. */
139 f_printstr (struct ui_file
*stream
, struct type
*type
, const gdb_byte
*string
,
140 unsigned int length
, const char *encoding
, int force_ellipses
,
141 const struct value_print_options
*options
)
143 const char *type_encoding
= f_get_encoding (type
);
145 if (TYPE_LENGTH (type
) == 4)
146 fputs_filtered ("4_", stream
);
148 if (!encoding
|| !*encoding
)
149 encoding
= type_encoding
;
151 generic_printstr (stream
, type
, string
, length
, encoding
,
152 force_ellipses
, '\'', 0, options
);
156 /* Table of operators and their precedences for printing expressions. */
158 static const struct op_print f_op_print_tab
[] =
160 {"+", BINOP_ADD
, PREC_ADD
, 0},
161 {"+", UNOP_PLUS
, PREC_PREFIX
, 0},
162 {"-", BINOP_SUB
, PREC_ADD
, 0},
163 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
164 {"*", BINOP_MUL
, PREC_MUL
, 0},
165 {"/", BINOP_DIV
, PREC_MUL
, 0},
166 {"DIV", BINOP_INTDIV
, PREC_MUL
, 0},
167 {"MOD", BINOP_REM
, PREC_MUL
, 0},
168 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
169 {".OR.", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
170 {".AND.", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
171 {".NOT.", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
172 {".EQ.", BINOP_EQUAL
, PREC_EQUAL
, 0},
173 {".NE.", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
174 {".LE.", BINOP_LEQ
, PREC_ORDER
, 0},
175 {".GE.", BINOP_GEQ
, PREC_ORDER
, 0},
176 {".GT.", BINOP_GTR
, PREC_ORDER
, 0},
177 {".LT.", BINOP_LESS
, PREC_ORDER
, 0},
178 {"**", UNOP_IND
, PREC_PREFIX
, 0},
179 {"@", BINOP_REPEAT
, PREC_REPEAT
, 0},
183 enum f_primitive_types
{
184 f_primitive_type_character
,
185 f_primitive_type_logical
,
186 f_primitive_type_logical_s1
,
187 f_primitive_type_logical_s2
,
188 f_primitive_type_logical_s8
,
189 f_primitive_type_integer
,
190 f_primitive_type_integer_s2
,
191 f_primitive_type_real
,
192 f_primitive_type_real_s8
,
193 f_primitive_type_real_s16
,
194 f_primitive_type_complex_s8
,
195 f_primitive_type_complex_s16
,
196 f_primitive_type_void
,
201 f_language_arch_info (struct gdbarch
*gdbarch
,
202 struct language_arch_info
*lai
)
204 const struct builtin_f_type
*builtin
= builtin_f_type (gdbarch
);
206 lai
->string_char_type
= builtin
->builtin_character
;
207 lai
->primitive_type_vector
208 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_f_primitive_types
+ 1,
211 lai
->primitive_type_vector
[f_primitive_type_character
]
212 = builtin
->builtin_character
;
213 lai
->primitive_type_vector
[f_primitive_type_logical
]
214 = builtin
->builtin_logical
;
215 lai
->primitive_type_vector
[f_primitive_type_logical_s1
]
216 = builtin
->builtin_logical_s1
;
217 lai
->primitive_type_vector
[f_primitive_type_logical_s2
]
218 = builtin
->builtin_logical_s2
;
219 lai
->primitive_type_vector
[f_primitive_type_logical_s8
]
220 = builtin
->builtin_logical_s8
;
221 lai
->primitive_type_vector
[f_primitive_type_real
]
222 = builtin
->builtin_real
;
223 lai
->primitive_type_vector
[f_primitive_type_real_s8
]
224 = builtin
->builtin_real_s8
;
225 lai
->primitive_type_vector
[f_primitive_type_real_s16
]
226 = builtin
->builtin_real_s16
;
227 lai
->primitive_type_vector
[f_primitive_type_complex_s8
]
228 = builtin
->builtin_complex_s8
;
229 lai
->primitive_type_vector
[f_primitive_type_complex_s16
]
230 = builtin
->builtin_complex_s16
;
231 lai
->primitive_type_vector
[f_primitive_type_void
]
232 = builtin
->builtin_void
;
234 lai
->bool_type_symbol
= "logical";
235 lai
->bool_type_default
= builtin
->builtin_logical_s2
;
238 /* Remove the modules separator :: from the default break list. */
241 f_word_break_characters (void)
249 retval
= xstrdup (default_word_break_characters ());
250 s
= strchr (retval
, ':');
253 char *last_char
= &s
[strlen (s
) - 1];
262 /* Consider the modules separator :: as a valid symbol name character
266 f_make_symbol_completion_list (char *text
, char *word
)
268 return default_make_symbol_completion_list_break_on (text
, word
, ":");
271 /* This is declared in c-lang.h but it is silly to import that file for what
272 is already just a hack. */
273 extern int c_value_print (struct value
*, struct ui_file
*,
274 const struct value_print_options
*);
276 const struct language_defn f_language_defn
=
285 &exp_descriptor_standard
,
286 f_parse
, /* parser */
287 f_error
, /* parser error function */
289 f_printchar
, /* Print character constant */
290 f_printstr
, /* function to print string constant */
291 f_emit_char
, /* Function to print a single character */
292 f_print_type
, /* Print a type using appropriate syntax */
293 default_print_typedef
, /* Print a typedef using appropriate syntax */
294 f_val_print
, /* Print a value using appropriate syntax */
295 c_value_print
, /* FIXME */
296 NULL
, /* Language specific skip_trampoline */
297 NULL
, /* name_of_this */
298 cp_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
299 basic_lookup_transparent_type
,/* lookup_transparent_type */
300 NULL
, /* Language specific symbol demangler */
301 NULL
, /* Language specific
302 class_name_from_physname */
303 f_op_print_tab
, /* expression operators for printing */
304 0, /* arrays are first-class (not c-style) */
305 1, /* String lower bound */
306 f_word_break_characters
,
307 f_make_symbol_completion_list
,
308 f_language_arch_info
,
309 default_print_array_index
,
310 default_pass_by_reference
,
313 iterate_over_symbols
,
318 build_fortran_types (struct gdbarch
*gdbarch
)
320 struct builtin_f_type
*builtin_f_type
321 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_f_type
);
323 builtin_f_type
->builtin_void
324 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "VOID");
326 builtin_f_type
->builtin_character
327 = arch_integer_type (gdbarch
, TARGET_CHAR_BIT
, 0, "character");
329 builtin_f_type
->builtin_logical_s1
330 = arch_boolean_type (gdbarch
, TARGET_CHAR_BIT
, 1, "logical*1");
332 builtin_f_type
->builtin_integer_s2
333 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
), 0,
336 builtin_f_type
->builtin_logical_s2
337 = arch_boolean_type (gdbarch
, gdbarch_short_bit (gdbarch
), 1,
340 builtin_f_type
->builtin_logical_s8
341 = arch_boolean_type (gdbarch
, gdbarch_long_long_bit (gdbarch
), 1,
344 builtin_f_type
->builtin_integer
345 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
), 0,
348 builtin_f_type
->builtin_logical
349 = arch_boolean_type (gdbarch
, gdbarch_int_bit (gdbarch
), 1,
352 builtin_f_type
->builtin_real
353 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
355 builtin_f_type
->builtin_real_s8
356 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
358 builtin_f_type
->builtin_real_s16
359 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
362 builtin_f_type
->builtin_complex_s8
363 = arch_complex_type (gdbarch
, "complex*8",
364 builtin_f_type
->builtin_real
);
365 builtin_f_type
->builtin_complex_s16
366 = arch_complex_type (gdbarch
, "complex*16",
367 builtin_f_type
->builtin_real_s8
);
368 builtin_f_type
->builtin_complex_s32
369 = arch_complex_type (gdbarch
, "complex*32",
370 builtin_f_type
->builtin_real_s16
);
372 return builtin_f_type
;
375 static struct gdbarch_data
*f_type_data
;
377 const struct builtin_f_type
*
378 builtin_f_type (struct gdbarch
*gdbarch
)
380 return gdbarch_data (gdbarch
, f_type_data
);
384 _initialize_f_language (void)
386 f_type_data
= gdbarch_data_register_post_init (build_fortran_types
);
388 add_language (&f_language_defn
);
393 allocate_saved_bf_node (void)
397 new = (SAVED_BF_PTR
) xmalloc (sizeof (SAVED_BF
));
401 static SAVED_FUNCTION
*
402 allocate_saved_function_node (void)
406 new = (SAVED_FUNCTION
*) xmalloc (sizeof (SAVED_FUNCTION
));
410 static SAVED_F77_COMMON_PTR
411 allocate_saved_f77_common_node (void)
413 SAVED_F77_COMMON_PTR
new;
415 new = (SAVED_F77_COMMON_PTR
) xmalloc (sizeof (SAVED_F77_COMMON
));
419 static COMMON_ENTRY_PTR
420 allocate_common_entry_node (void)
422 COMMON_ENTRY_PTR
new;
424 new = (COMMON_ENTRY_PTR
) xmalloc (sizeof (COMMON_ENTRY
));
429 SAVED_F77_COMMON_PTR head_common_list
= NULL
; /* Ptr to 1st saved COMMON */
430 SAVED_F77_COMMON_PTR tail_common_list
= NULL
; /* Ptr to last saved COMMON */
431 SAVED_F77_COMMON_PTR current_common
= NULL
; /* Ptr to current COMMON */
434 static SAVED_BF_PTR saved_bf_list
= NULL
; /* Ptr to (.bf,function)
436 static SAVED_BF_PTR saved_bf_list_end
= NULL
; /* Ptr to above list's end */
437 static SAVED_BF_PTR current_head_bf_list
= NULL
; /* Current head of
440 static SAVED_BF_PTR tmp_bf_ptr
; /* Generic temporary for use
443 /* The following function simply enters a given common block onto
444 the global common block chain. */
447 add_common_block (char *name
, CORE_ADDR offset
, int secnum
, char *func_stab
)
449 SAVED_F77_COMMON_PTR tmp
;
450 char *c
, *local_copy_func_stab
;
452 /* If the COMMON block we are trying to add has a blank
453 name (i.e. "#BLNK_COM") then we set it to __BLANK
454 because the darn "#" character makes GDB's input
458 if (strcmp (name
, BLANK_COMMON_NAME_ORIGINAL
) == 0
459 || strcmp (name
, BLANK_COMMON_NAME_MF77
) == 0)
463 name
= alloca (strlen (BLANK_COMMON_NAME_LOCAL
) + 1);
464 strcpy (name
, BLANK_COMMON_NAME_LOCAL
);
467 tmp
= allocate_saved_f77_common_node ();
469 local_copy_func_stab
= xmalloc (strlen (func_stab
) + 1);
470 strcpy (local_copy_func_stab
, func_stab
);
472 tmp
->name
= xmalloc (strlen (name
) + 1);
474 /* local_copy_func_stab is a stabstring, let us first extract the
475 function name from the stab by NULLing out the ':' character. */
479 c
= strchr (local_copy_func_stab
, ':');
484 error (_("Malformed function STAB found in add_common_block()"));
487 tmp
->owning_function
= xmalloc (strlen (local_copy_func_stab
) + 1);
489 strcpy (tmp
->owning_function
, local_copy_func_stab
);
491 strcpy (tmp
->name
, name
);
492 tmp
->offset
= offset
;
495 tmp
->secnum
= secnum
;
497 current_common
= tmp
;
499 if (head_common_list
== NULL
)
501 head_common_list
= tail_common_list
= tmp
;
505 tail_common_list
->next
= tmp
;
506 tail_common_list
= tmp
;
511 /* The following function simply enters a given common entry onto
512 the "current_common" block that has been saved away. */
516 add_common_entry (struct symbol
*entry_sym_ptr
)
518 COMMON_ENTRY_PTR tmp
;
522 /* The order of this list is important, since
523 we expect the entries to appear in decl.
524 order when we later issue "info common" calls. */
526 tmp
= allocate_common_entry_node ();
529 tmp
->symbol
= entry_sym_ptr
;
531 if (current_common
== NULL
)
532 error (_("Attempt to add COMMON entry with no block open!"));
535 if (current_common
->entries
== NULL
)
537 current_common
->entries
= tmp
;
538 current_common
->end_of_entries
= tmp
;
542 current_common
->end_of_entries
->next
= tmp
;
543 current_common
->end_of_entries
= tmp
;
549 /* This routine finds the first encountred COMMON block named "name". */
552 static SAVED_F77_COMMON_PTR
553 find_first_common_named (char *name
)
556 SAVED_F77_COMMON_PTR tmp
;
558 tmp
= head_common_list
;
562 if (strcmp (tmp
->name
, name
) == 0)
571 /* This routine finds the first encountred COMMON block named "name"
572 that belongs to function funcname. */
575 find_common_for_function (char *name
, char *funcname
)
578 SAVED_F77_COMMON_PTR tmp
;
580 tmp
= head_common_list
;
584 if (strcmp (tmp
->name
, name
) == 0
585 && strcmp (tmp
->owning_function
, funcname
) == 0)
596 /* The following function is called to patch up the offsets
597 for the statics contained in the COMMON block named
601 patch_common_entries (SAVED_F77_COMMON_PTR blk
, CORE_ADDR offset
, int secnum
)
603 COMMON_ENTRY_PTR entry
;
605 blk
->offset
= offset
; /* Keep this around for future use. */
607 entry
= blk
->entries
;
609 while (entry
!= NULL
)
611 SYMBOL_VALUE (entry
->symbol
) += offset
;
612 SYMBOL_SECTION (entry
->symbol
) = secnum
;
616 blk
->secnum
= secnum
;
619 /* Patch all commons named "name" that need patching.Since COMMON
620 blocks occur with relative infrequency, we simply do a linear scan on
621 the name. Eventually, the best way to do this will be a
622 hashed-lookup. Secnum is the section number for the .bss section
623 (which is where common data lives). */
626 patch_all_commons_by_name (char *name
, CORE_ADDR offset
, int secnum
)
629 SAVED_F77_COMMON_PTR tmp
;
631 /* For blank common blocks, change the canonical reprsentation
634 if (strcmp (name
, BLANK_COMMON_NAME_ORIGINAL
) == 0
635 || strcmp (name
, BLANK_COMMON_NAME_MF77
) == 0)
638 name
= alloca (strlen (BLANK_COMMON_NAME_LOCAL
) + 1);
639 strcpy (name
, BLANK_COMMON_NAME_LOCAL
);
642 tmp
= head_common_list
;
646 if (COMMON_NEEDS_PATCHING (tmp
))
647 if (strcmp (tmp
->name
, name
) == 0)
648 patch_common_entries (tmp
, offset
, secnum
);
655 /* This macro adds the symbol-number for the start of the function
656 (the symbol number of the .bf) referenced by symnum_fcn to a
657 list. This list, in reality should be a FIFO queue but since
658 #line pragmas sometimes cause line ranges to get messed up
659 we simply create a linear list. This list can then be searched
660 first by a queueing algorithm and upon failure fall back to
664 #define ADD_BF_SYMNUM(bf_sym,fcn_sym) \
666 if (saved_bf_list == NULL) \
668 tmp_bf_ptr = allocate_saved_bf_node(); \
670 tmp_bf_ptr->symnum_bf = (bf_sym); \
671 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
672 tmp_bf_ptr->next = NULL; \
674 current_head_bf_list = saved_bf_list = tmp_bf_ptr; \
675 saved_bf_list_end = tmp_bf_ptr; \
679 tmp_bf_ptr = allocate_saved_bf_node(); \
681 tmp_bf_ptr->symnum_bf = (bf_sym); \
682 tmp_bf_ptr->symnum_fcn = (fcn_sym); \
683 tmp_bf_ptr->next = NULL; \
685 saved_bf_list_end->next = tmp_bf_ptr; \
686 saved_bf_list_end = tmp_bf_ptr; \
690 /* This function frees the entire (.bf,function) list. */
697 SAVED_BF_PTR tmp
= saved_bf_list
;
698 SAVED_BF_PTR next
= NULL
;
706 saved_bf_list
= NULL
;
710 int global_remote_debug
;
715 get_bf_for_fcn (long the_function
)
720 /* First use a simple queuing algorithm (i.e. look and see if the
721 item at the head of the queue is the one you want). */
723 if (saved_bf_list
== NULL
)
724 internal_error (__FILE__
, __LINE__
,
725 _("cannot get .bf node off empty list"));
727 if (current_head_bf_list
!= NULL
)
728 if (current_head_bf_list
->symnum_fcn
== the_function
)
730 if (global_remote_debug
)
731 fprintf_unfiltered (gdb_stderr
, "*");
733 tmp
= current_head_bf_list
;
734 current_head_bf_list
= current_head_bf_list
->next
;
735 return (tmp
->symnum_bf
);
738 /* If the above did not work (probably because #line directives were
739 used in the sourcefile and they messed up our internal tables) we now do
740 the ugly linear scan. */
742 if (global_remote_debug
)
743 fprintf_unfiltered (gdb_stderr
, "\ndefaulting to linear scan\n");
750 if (tmp
->symnum_fcn
== the_function
)
752 if (global_remote_debug
)
753 fprintf_unfiltered (gdb_stderr
, "Found in %d probes\n", nprobes
);
754 current_head_bf_list
= tmp
->next
;
755 return (tmp
->symnum_bf
);
763 static SAVED_FUNCTION_PTR saved_function_list
= NULL
;
764 static SAVED_FUNCTION_PTR saved_function_list_end
= NULL
;
767 clear_function_list (void)
769 SAVED_FUNCTION_PTR tmp
= saved_function_list
;
770 SAVED_FUNCTION_PTR next
= NULL
;
779 saved_function_list
= NULL
;