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 static struct type *m2_create_fundamental_type PARAMS ((struct objfile *, int));
30 static void m2_printstr PARAMS ((GDB_FILE *, char *, unsigned int, int));
31 static void m2_printchar PARAMS ((int, GDB_FILE *));
32 static void emit_char PARAMS ((int, GDB_FILE *, int));
34 /* Print the character C on STREAM as part of the contents of a literal
35 string whose delimiter is QUOTER. Note that that format for printing
36 characters and strings is language specific.
37 FIXME: This is a copy of the same function from c-exp.y. It should
38 be replaced with a true Modula version.
42 emit_char (c, stream, quoter)
48 c &= 0xFF; /* Avoid sign bit follies */
50 if (PRINT_LITERAL_FORM (c))
52 if (c == '\\' || c == quoter)
54 fputs_filtered ("\\", stream);
56 fprintf_filtered (stream, "%c", c);
63 fputs_filtered ("\\n", stream);
66 fputs_filtered ("\\b", stream);
69 fputs_filtered ("\\t", stream);
72 fputs_filtered ("\\f", stream);
75 fputs_filtered ("\\r", stream);
78 fputs_filtered ("\\e", stream);
81 fputs_filtered ("\\a", stream);
84 fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
90 /* FIXME: This is a copy of the same function from c-exp.y. It should
91 be replaced with a true Modula version. */
94 m2_printchar (c, stream)
98 fputs_filtered ("'", stream);
99 emit_char (c, stream, '\'');
100 fputs_filtered ("'", stream);
103 /* Print the character string STRING, printing at most LENGTH characters.
104 Printing stops early if the number hits print_max; repeat counts
105 are printed as appropriate. Print ellipses at the end if we
106 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
107 FIXME: This is a copy of the same function from c-exp.y. It should
108 be replaced with a true Modula version. */
111 m2_printstr (stream, string, length, force_ellipses)
117 register unsigned int i;
118 unsigned int things_printed = 0;
121 extern int inspect_it;
122 extern int repeat_count_threshold;
123 extern int print_max;
127 fputs_filtered ("\"\"", gdb_stdout);
131 for (i = 0; i < length && things_printed < print_max; ++i)
133 /* Position of the character we are examining
134 to see whether it is repeated. */
136 /* Number of repetitions we have detected so far. */
143 fputs_filtered (", ", stream);
149 while (rep1 < length && string[rep1] == string[i])
155 if (reps > repeat_count_threshold)
160 fputs_filtered ("\\\", ", stream);
162 fputs_filtered ("\", ", stream);
165 m2_printchar (string[i], stream);
166 fprintf_filtered (stream, " <repeats %u times>", reps);
168 things_printed += repeat_count_threshold;
176 fputs_filtered ("\\\"", stream);
178 fputs_filtered ("\"", stream);
181 emit_char (string[i], stream, '"');
186 /* Terminate the quotes if necessary. */
190 fputs_filtered ("\\\"", stream);
192 fputs_filtered ("\"", stream);
195 if (force_ellipses || i < length)
196 fputs_filtered ("...", stream);
199 /* FIXME: This is a copy of c_create_fundamental_type(), before
200 all the non-C types were stripped from it. Needs to be fixed
201 by an experienced Modula programmer. */
204 m2_create_fundamental_type (objfile, typeid)
205 struct objfile *objfile;
208 register struct type *type = NULL;
213 /* FIXME: For now, if we are asked to produce a type not in this
214 language, create the equivalent of a C integer type with the
215 name "<?type?>". When all the dust settles from the type
216 reconstruction work, this should probably become an error. */
217 type = init_type (TYPE_CODE_INT,
218 TARGET_INT_BIT / TARGET_CHAR_BIT,
219 0, "<?type?>", objfile);
220 warning ("internal error: no Modula fundamental type %d", typeid);
223 type = init_type (TYPE_CODE_VOID,
224 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
228 type = init_type (TYPE_CODE_BOOL,
229 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
230 TYPE_FLAG_UNSIGNED, "boolean", objfile);
233 type = init_type (TYPE_CODE_STRING,
234 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
235 0, "string", objfile);
238 type = init_type (TYPE_CODE_INT,
239 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
243 type = init_type (TYPE_CODE_INT,
244 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
245 0, "signed char", objfile);
247 case FT_UNSIGNED_CHAR:
248 type = init_type (TYPE_CODE_INT,
249 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
250 TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
253 type = init_type (TYPE_CODE_INT,
254 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
255 0, "short", objfile);
257 case FT_SIGNED_SHORT:
258 type = init_type (TYPE_CODE_INT,
259 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
260 0, "short", objfile); /* FIXME-fnf */
262 case FT_UNSIGNED_SHORT:
263 type = init_type (TYPE_CODE_INT,
264 TARGET_SHORT_BIT / TARGET_CHAR_BIT,
265 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
268 type = init_type (TYPE_CODE_INT,
269 TARGET_INT_BIT / TARGET_CHAR_BIT,
272 case FT_SIGNED_INTEGER:
273 type = init_type (TYPE_CODE_INT,
274 TARGET_INT_BIT / TARGET_CHAR_BIT,
275 0, "int", objfile); /* FIXME -fnf */
277 case FT_UNSIGNED_INTEGER:
278 type = init_type (TYPE_CODE_INT,
279 TARGET_INT_BIT / TARGET_CHAR_BIT,
280 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
282 case FT_FIXED_DECIMAL:
283 type = init_type (TYPE_CODE_INT,
284 TARGET_INT_BIT / TARGET_CHAR_BIT,
285 0, "fixed decimal", objfile);
288 type = init_type (TYPE_CODE_INT,
289 TARGET_LONG_BIT / TARGET_CHAR_BIT,
293 type = init_type (TYPE_CODE_INT,
294 TARGET_LONG_BIT / TARGET_CHAR_BIT,
295 0, "long", objfile); /* FIXME -fnf */
297 case FT_UNSIGNED_LONG:
298 type = init_type (TYPE_CODE_INT,
299 TARGET_LONG_BIT / TARGET_CHAR_BIT,
300 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
303 type = init_type (TYPE_CODE_INT,
304 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
305 0, "long long", objfile);
307 case FT_SIGNED_LONG_LONG:
308 type = init_type (TYPE_CODE_INT,
309 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
310 0, "signed long long", objfile);
312 case FT_UNSIGNED_LONG_LONG:
313 type = init_type (TYPE_CODE_INT,
314 TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
315 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
318 type = init_type (TYPE_CODE_FLT,
319 TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
320 0, "float", objfile);
322 case FT_DBL_PREC_FLOAT:
323 type = init_type (TYPE_CODE_FLT,
324 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
325 0, "double", objfile);
327 case FT_FLOAT_DECIMAL:
328 type = init_type (TYPE_CODE_FLT,
329 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
330 0, "floating decimal", objfile);
332 case FT_EXT_PREC_FLOAT:
333 type = init_type (TYPE_CODE_FLT,
334 TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
335 0, "long double", objfile);
338 type = init_type (TYPE_CODE_COMPLEX,
339 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
340 0, "complex", objfile);
341 TYPE_TARGET_TYPE (type)
342 = m2_create_fundamental_type (objfile, FT_FLOAT);
344 case FT_DBL_PREC_COMPLEX:
345 type = init_type (TYPE_CODE_COMPLEX,
346 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
347 0, "double complex", objfile);
348 TYPE_TARGET_TYPE (type)
349 = m2_create_fundamental_type (objfile, FT_DBL_PREC_FLOAT);
351 case FT_EXT_PREC_COMPLEX:
352 type = init_type (TYPE_CODE_COMPLEX,
353 2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
354 0, "long double complex", objfile);
355 TYPE_TARGET_TYPE (type)
356 = m2_create_fundamental_type (objfile, FT_EXT_PREC_FLOAT);
363 /* Table of operators and their precedences for printing expressions. */
365 static const struct op_print m2_op_print_tab[] = {
366 {"+", BINOP_ADD, PREC_ADD, 0},
367 {"+", UNOP_PLUS, PREC_PREFIX, 0},
368 {"-", BINOP_SUB, PREC_ADD, 0},
369 {"-", UNOP_NEG, PREC_PREFIX, 0},
370 {"*", BINOP_MUL, PREC_MUL, 0},
371 {"/", BINOP_DIV, PREC_MUL, 0},
372 {"DIV", BINOP_INTDIV, PREC_MUL, 0},
373 {"MOD", BINOP_REM, PREC_MUL, 0},
374 {":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
375 {"OR", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
376 {"AND", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
377 {"NOT", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
378 {"=", BINOP_EQUAL, PREC_EQUAL, 0},
379 {"<>", BINOP_NOTEQUAL, PREC_EQUAL, 0},
380 {"<=", BINOP_LEQ, PREC_ORDER, 0},
381 {">=", BINOP_GEQ, PREC_ORDER, 0},
382 {">", BINOP_GTR, PREC_ORDER, 0},
383 {"<", BINOP_LESS, PREC_ORDER, 0},
384 {"^", UNOP_IND, PREC_PREFIX, 0},
385 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
386 {"CAP", UNOP_CAP, PREC_BUILTIN_FUNCTION, 0},
387 {"CHR", UNOP_CHR, PREC_BUILTIN_FUNCTION, 0},
388 {"ORD", UNOP_ORD, PREC_BUILTIN_FUNCTION, 0},
389 {"FLOAT",UNOP_FLOAT, PREC_BUILTIN_FUNCTION, 0},
390 {"HIGH", UNOP_HIGH, PREC_BUILTIN_FUNCTION, 0},
391 {"MAX", UNOP_MAX, PREC_BUILTIN_FUNCTION, 0},
392 {"MIN", UNOP_MIN, PREC_BUILTIN_FUNCTION, 0},
393 {"ODD", UNOP_ODD, PREC_BUILTIN_FUNCTION, 0},
394 {"TRUNC", UNOP_TRUNC, PREC_BUILTIN_FUNCTION, 0},
398 /* The built-in types of Modula-2. */
400 struct type *builtin_type_m2_char;
401 struct type *builtin_type_m2_int;
402 struct type *builtin_type_m2_card;
403 struct type *builtin_type_m2_real;
404 struct type *builtin_type_m2_bool;
406 struct type ** const (m2_builtin_types[]) =
408 &builtin_type_m2_char,
409 &builtin_type_m2_int,
410 &builtin_type_m2_card,
411 &builtin_type_m2_real,
412 &builtin_type_m2_bool,
416 const struct language_defn m2_language_defn = {
422 m2_parse, /* parser */
423 m2_error, /* parser error function */
424 evaluate_subexp_standard,
425 m2_printchar, /* Print character constant */
426 m2_printstr, /* function to print string constant */
427 m2_create_fundamental_type, /* Create fundamental type in this language */
428 m2_print_type, /* Print a type using appropriate syntax */
429 m2_val_print, /* Print a value using appropriate syntax */
430 c_value_print, /* Print a top-level value */
431 {"", "", "", ""}, /* Binary format info */
432 {"%loB", "", "o", "B"}, /* Octal format info */
433 {"%ld", "", "d", ""}, /* Decimal format info */
434 {"0%lXH", "0", "X", "H"}, /* Hex format info */
435 m2_op_print_tab, /* expression operators for printing */
436 0, /* arrays are first-class (not c-style) */
437 0, /* String lower bound */
438 &builtin_type_m2_char, /* Type of string elements */
442 /* Initialization for Modula-2 */
445 _initialize_m2_language ()
447 /* Modula-2 "pervasive" types. NOTE: these can be redefined!!! */
448 builtin_type_m2_int =
449 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
451 "INTEGER", (struct objfile *) NULL);
452 builtin_type_m2_card =
453 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
455 "CARDINAL", (struct objfile *) NULL);
456 builtin_type_m2_real =
457 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
459 "REAL", (struct objfile *) NULL);
460 builtin_type_m2_char =
461 init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
463 "CHAR", (struct objfile *) NULL);
464 builtin_type_m2_bool =
465 init_type (TYPE_CODE_BOOL, TARGET_INT_BIT / TARGET_CHAR_BIT,
467 "BOOLEAN", (struct objfile *) NULL);
469 add_language (&m2_language_defn);