1 /* Modula 2 language support routines for GDB, the GNU debugger.
2 Copyright 1992 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 #include "expression.h"
24 #include "parser-defs.h"
29 extern void _initialize_m2_language
PARAMS ((void));
30 static struct type
*m2_create_fundamental_type
PARAMS ((struct objfile
*, int));
31 static void m2_printstr
PARAMS ((GDB_FILE
*stream
, char *string
, unsigned int length
, int width
, int force_ellipses
));
32 static void m2_printchar
PARAMS ((int, GDB_FILE
*));
33 static void m2_emit_char
PARAMS ((int, GDB_FILE
*, int));
35 /* Print the character C on STREAM as part of the contents of a literal
36 string whose delimiter is QUOTER. Note that that format for printing
37 characters and strings is language specific.
38 FIXME: This is a copy of the same function from c-exp.y. It should
39 be replaced with a true Modula version.
43 m2_emit_char (c
, stream
, quoter
)
49 c
&= 0xFF; /* Avoid sign bit follies */
51 if (PRINT_LITERAL_FORM (c
))
53 if (c
== '\\' || c
== quoter
)
55 fputs_filtered ("\\", stream
);
57 fprintf_filtered (stream
, "%c", c
);
64 fputs_filtered ("\\n", stream
);
67 fputs_filtered ("\\b", stream
);
70 fputs_filtered ("\\t", stream
);
73 fputs_filtered ("\\f", stream
);
76 fputs_filtered ("\\r", stream
);
79 fputs_filtered ("\\e", stream
);
82 fputs_filtered ("\\a", stream
);
85 fprintf_filtered (stream
, "\\%.3o", (unsigned int) c
);
91 /* FIXME: This is a copy of the same function from c-exp.y. It should
92 be replaced with a true Modula version. */
95 m2_printchar (c
, stream
)
99 fputs_filtered ("'", stream
);
100 LA_EMIT_CHAR (c
, stream
, '\'');
101 fputs_filtered ("'", stream
);
104 /* Print the character string STRING, printing at most LENGTH characters.
105 Printing stops early if the number hits print_max; repeat counts
106 are printed as appropriate. Print ellipses at the end if we
107 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
108 FIXME: This is a copy of the same function from c-exp.y. It should
109 be replaced with a true Modula version. */
112 m2_printstr (stream
, string
, length
, width
, force_ellipses
)
119 register unsigned int i
;
120 unsigned int things_printed
= 0;
123 extern int inspect_it
;
124 extern int repeat_count_threshold
;
125 extern int print_max
;
129 fputs_filtered ("\"\"", gdb_stdout
);
133 for (i
= 0; i
< length
&& things_printed
< print_max
; ++i
)
135 /* Position of the character we are examining
136 to see whether it is repeated. */
138 /* Number of repetitions we have detected so far. */
145 fputs_filtered (", ", stream
);
151 while (rep1
< length
&& string
[rep1
] == string
[i
])
157 if (reps
> repeat_count_threshold
)
162 fputs_filtered ("\\\", ", stream
);
164 fputs_filtered ("\", ", stream
);
167 m2_printchar (string
[i
], stream
);
168 fprintf_filtered (stream
, " <repeats %u times>", reps
);
170 things_printed
+= repeat_count_threshold
;
178 fputs_filtered ("\\\"", stream
);
180 fputs_filtered ("\"", stream
);
183 LA_EMIT_CHAR (string
[i
], stream
, '"');
188 /* Terminate the quotes if necessary. */
192 fputs_filtered ("\\\"", stream
);
194 fputs_filtered ("\"", stream
);
197 if (force_ellipses
|| i
< length
)
198 fputs_filtered ("...", stream
);
201 /* FIXME: This is a copy of c_create_fundamental_type(), before
202 all the non-C types were stripped from it. Needs to be fixed
203 by an experienced Modula programmer. */
206 m2_create_fundamental_type (objfile
, typeid)
207 struct objfile
*objfile
;
210 register struct type
*type
= NULL
;
215 /* FIXME: For now, if we are asked to produce a type not in this
216 language, create the equivalent of a C integer type with the
217 name "<?type?>". When all the dust settles from the type
218 reconstruction work, this should probably become an error. */
219 type
= init_type (TYPE_CODE_INT
,
220 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
221 0, "<?type?>", objfile
);
222 warning ("internal error: no Modula fundamental type %d", typeid);
225 type
= init_type (TYPE_CODE_VOID
,
226 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
230 type
= init_type (TYPE_CODE_BOOL
,
231 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
232 TYPE_FLAG_UNSIGNED
, "boolean", objfile
);
235 type
= init_type (TYPE_CODE_STRING
,
236 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
237 0, "string", objfile
);
240 type
= init_type (TYPE_CODE_INT
,
241 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
245 type
= init_type (TYPE_CODE_INT
,
246 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
247 0, "signed char", objfile
);
249 case FT_UNSIGNED_CHAR
:
250 type
= init_type (TYPE_CODE_INT
,
251 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
252 TYPE_FLAG_UNSIGNED
, "unsigned char", objfile
);
255 type
= init_type (TYPE_CODE_INT
,
256 TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
257 0, "short", objfile
);
259 case FT_SIGNED_SHORT
:
260 type
= init_type (TYPE_CODE_INT
,
261 TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
262 0, "short", objfile
); /* FIXME-fnf */
264 case FT_UNSIGNED_SHORT
:
265 type
= init_type (TYPE_CODE_INT
,
266 TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
267 TYPE_FLAG_UNSIGNED
, "unsigned short", objfile
);
270 type
= init_type (TYPE_CODE_INT
,
271 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
274 case FT_SIGNED_INTEGER
:
275 type
= init_type (TYPE_CODE_INT
,
276 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
277 0, "int", objfile
); /* FIXME -fnf */
279 case FT_UNSIGNED_INTEGER
:
280 type
= init_type (TYPE_CODE_INT
,
281 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
282 TYPE_FLAG_UNSIGNED
, "unsigned int", objfile
);
284 case FT_FIXED_DECIMAL
:
285 type
= init_type (TYPE_CODE_INT
,
286 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
287 0, "fixed decimal", objfile
);
290 type
= init_type (TYPE_CODE_INT
,
291 TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
295 type
= init_type (TYPE_CODE_INT
,
296 TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
297 0, "long", objfile
); /* FIXME -fnf */
299 case FT_UNSIGNED_LONG
:
300 type
= init_type (TYPE_CODE_INT
,
301 TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
302 TYPE_FLAG_UNSIGNED
, "unsigned long", objfile
);
305 type
= init_type (TYPE_CODE_INT
,
306 TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
307 0, "long long", objfile
);
309 case FT_SIGNED_LONG_LONG
:
310 type
= init_type (TYPE_CODE_INT
,
311 TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
312 0, "signed long long", objfile
);
314 case FT_UNSIGNED_LONG_LONG
:
315 type
= init_type (TYPE_CODE_INT
,
316 TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
317 TYPE_FLAG_UNSIGNED
, "unsigned long long", objfile
);
320 type
= init_type (TYPE_CODE_FLT
,
321 TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
322 0, "float", objfile
);
324 case FT_DBL_PREC_FLOAT
:
325 type
= init_type (TYPE_CODE_FLT
,
326 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
327 0, "double", objfile
);
329 case FT_FLOAT_DECIMAL
:
330 type
= init_type (TYPE_CODE_FLT
,
331 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
332 0, "floating decimal", objfile
);
334 case FT_EXT_PREC_FLOAT
:
335 type
= init_type (TYPE_CODE_FLT
,
336 TARGET_LONG_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
337 0, "long double", objfile
);
340 type
= init_type (TYPE_CODE_COMPLEX
,
341 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
342 0, "complex", objfile
);
343 TYPE_TARGET_TYPE (type
)
344 = m2_create_fundamental_type (objfile
, FT_FLOAT
);
346 case FT_DBL_PREC_COMPLEX
:
347 type
= init_type (TYPE_CODE_COMPLEX
,
348 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
349 0, "double complex", objfile
);
350 TYPE_TARGET_TYPE (type
)
351 = m2_create_fundamental_type (objfile
, FT_DBL_PREC_FLOAT
);
353 case FT_EXT_PREC_COMPLEX
:
354 type
= init_type (TYPE_CODE_COMPLEX
,
355 2 * TARGET_LONG_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
356 0, "long double complex", objfile
);
357 TYPE_TARGET_TYPE (type
)
358 = m2_create_fundamental_type (objfile
, FT_EXT_PREC_FLOAT
);
365 /* Table of operators and their precedences for printing expressions. */
367 static const struct op_print m2_op_print_tab
[] = {
368 {"+", BINOP_ADD
, PREC_ADD
, 0},
369 {"+", UNOP_PLUS
, PREC_PREFIX
, 0},
370 {"-", BINOP_SUB
, PREC_ADD
, 0},
371 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
372 {"*", BINOP_MUL
, PREC_MUL
, 0},
373 {"/", BINOP_DIV
, PREC_MUL
, 0},
374 {"DIV", BINOP_INTDIV
, PREC_MUL
, 0},
375 {"MOD", BINOP_REM
, PREC_MUL
, 0},
376 {":=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
377 {"OR", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
378 {"AND", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
379 {"NOT", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
380 {"=", BINOP_EQUAL
, PREC_EQUAL
, 0},
381 {"<>", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
382 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
383 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
384 {">", BINOP_GTR
, PREC_ORDER
, 0},
385 {"<", BINOP_LESS
, PREC_ORDER
, 0},
386 {"^", UNOP_IND
, PREC_PREFIX
, 0},
387 {"@", BINOP_REPEAT
, PREC_REPEAT
, 0},
388 {"CAP", UNOP_CAP
, PREC_BUILTIN_FUNCTION
, 0},
389 {"CHR", UNOP_CHR
, PREC_BUILTIN_FUNCTION
, 0},
390 {"ORD", UNOP_ORD
, PREC_BUILTIN_FUNCTION
, 0},
391 {"FLOAT",UNOP_FLOAT
, PREC_BUILTIN_FUNCTION
, 0},
392 {"HIGH", UNOP_HIGH
, PREC_BUILTIN_FUNCTION
, 0},
393 {"MAX", UNOP_MAX
, PREC_BUILTIN_FUNCTION
, 0},
394 {"MIN", UNOP_MIN
, PREC_BUILTIN_FUNCTION
, 0},
395 {"ODD", UNOP_ODD
, PREC_BUILTIN_FUNCTION
, 0},
396 {"TRUNC", UNOP_TRUNC
, PREC_BUILTIN_FUNCTION
, 0},
400 /* The built-in types of Modula-2. */
402 struct type
*builtin_type_m2_char
;
403 struct type
*builtin_type_m2_int
;
404 struct type
*builtin_type_m2_card
;
405 struct type
*builtin_type_m2_real
;
406 struct type
*builtin_type_m2_bool
;
408 struct type
** CONST_PTR (m2_builtin_types
[]) =
410 &builtin_type_m2_char
,
411 &builtin_type_m2_int
,
412 &builtin_type_m2_card
,
413 &builtin_type_m2_real
,
414 &builtin_type_m2_bool
,
418 const struct language_defn m2_language_defn
= {
424 m2_parse
, /* parser */
425 m2_error
, /* parser error function */
426 evaluate_subexp_standard
,
427 m2_printchar
, /* Print character constant */
428 m2_printstr
, /* function to print string constant */
429 m2_emit_char
, /* Function to print a single character */
430 m2_create_fundamental_type
, /* Create fundamental type in this language */
431 m2_print_type
, /* Print a type using appropriate syntax */
432 m2_val_print
, /* Print a value using appropriate syntax */
433 c_value_print
, /* Print a top-level value */
434 {"", "", "", ""}, /* Binary format info */
435 {"%loB", "", "o", "B"}, /* Octal format info */
436 {"%ld", "", "d", ""}, /* Decimal format info */
437 {"0%lXH", "0", "X", "H"}, /* Hex format info */
438 m2_op_print_tab
, /* expression operators for printing */
439 0, /* arrays are first-class (not c-style) */
440 0, /* String lower bound */
441 &builtin_type_m2_char
, /* Type of string elements */
445 /* Initialization for Modula-2 */
448 _initialize_m2_language ()
450 /* Modula-2 "pervasive" types. NOTE: these can be redefined!!! */
451 builtin_type_m2_int
=
452 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
454 "INTEGER", (struct objfile
*) NULL
);
455 builtin_type_m2_card
=
456 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
458 "CARDINAL", (struct objfile
*) NULL
);
459 builtin_type_m2_real
=
460 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
462 "REAL", (struct objfile
*) NULL
);
463 builtin_type_m2_char
=
464 init_type (TYPE_CODE_CHAR
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
466 "CHAR", (struct objfile
*) NULL
);
467 builtin_type_m2_bool
=
468 init_type (TYPE_CODE_BOOL
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
470 "BOOLEAN", (struct objfile
*) NULL
);
472 add_language (&m2_language_defn
);