1 /* Chill language support routines for GDB, the GNU debugger.
2 Copyright 1992, 1995, 1996 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. */
24 #include "expression.h"
25 #include "parser-defs.h"
30 evaluate_subexp_chill PARAMS ((struct type *, struct expression *, int *, enum noside));
33 value_chill_max_min PARAMS ((enum exp_opcode, value_ptr));
36 value_chill_card PARAMS ((value_ptr));
39 value_chill_length PARAMS ((value_ptr));
42 chill_create_fundamental_type PARAMS ((struct objfile *, int));
45 chill_printstr PARAMS ((GDB_FILE *, char *, unsigned int, int));
48 chill_printchar PARAMS ((int, GDB_FILE *));
50 /* For now, Chill uses a simple mangling algorithm whereby you simply
51 discard everything after the occurance of two successive CPLUS_MARKER
52 characters to derive the demangled form. */
55 chill_demangle (mangled)
58 const char *joiner = NULL;
60 const char *cp = mangled;
64 if (is_cplus_marker (*cp))
71 if (joiner != NULL && *(joiner + 1) == *joiner)
73 demangled = savestring (mangled, joiner - mangled);
83 chill_printchar (c, stream)
87 c &= 0xFF; /* Avoid sign bit follies */
89 if (PRINT_LITERAL_FORM (c))
91 if (c == '\'' || c == '^')
92 fprintf_filtered (stream, "'%c%c'", c, c);
94 fprintf_filtered (stream, "'%c'", c);
98 fprintf_filtered (stream, "'^(%u)'", (unsigned int) c);
102 /* Print the character string STRING, printing at most LENGTH characters.
103 Printing stops early if the number hits print_max; repeat counts
104 are printed as appropriate. Print ellipses at the end if we
105 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
106 Note that gdb maintains the length of strings without counting the
107 terminating null byte, while chill strings are typically written with
108 an explicit null byte. So we always assume an implied null byte
109 until gdb is able to maintain non-null terminated strings as well
110 as null terminated strings (FIXME).
114 chill_printstr (stream, string, length, force_ellipses)
120 register unsigned int i;
121 unsigned int things_printed = 0;
122 int in_literal_form = 0;
123 int in_control_form = 0;
124 int need_slashslash = 0;
126 extern int repeat_count_threshold;
127 extern int print_max;
131 fputs_filtered ("\"\"", stream);
135 for (i = 0; i < length && things_printed < print_max; ++i)
137 /* Position of the character we are examining
138 to see whether it is repeated. */
140 /* Number of repetitions we have detected so far. */
147 fputs_filtered ("//", stream);
153 while (rep1 < length && string[rep1] == string[i])
160 if (reps > repeat_count_threshold)
162 if (in_control_form || in_literal_form)
165 fputs_filtered (")", stream);
166 fputs_filtered ("\"//", stream);
167 in_control_form = in_literal_form = 0;
169 chill_printchar (c, stream);
170 fprintf_filtered (stream, "<repeats %u times>", reps);
172 things_printed += repeat_count_threshold;
177 if (! in_literal_form && ! in_control_form)
178 fputs_filtered ("\"", stream);
179 if (PRINT_LITERAL_FORM (c))
181 if (!in_literal_form)
185 fputs_filtered (")", stream);
190 fprintf_filtered (stream, "%c", c);
191 if (c == '"' || c == '^')
192 /* duplicate this one as must be done at input */
193 fprintf_filtered (stream, "%c", c);
197 if (!in_control_form)
203 fputs_filtered ("^(", stream);
207 fprintf_filtered (stream, ",");
209 fprintf_filtered (stream, "%u", (unsigned int) c);
215 /* Terminate the quotes if necessary. */
218 fputs_filtered (")", stream);
220 if (in_literal_form || in_control_form)
222 fputs_filtered ("\"", stream);
224 if (force_ellipses || (i < length))
226 fputs_filtered ("...", stream);
231 chill_create_fundamental_type (objfile, typeid)
232 struct objfile *objfile;
235 register struct type *type = NULL;
240 /* FIXME: For now, if we are asked to produce a type not in this
241 language, create the equivalent of a C integer type with the
242 name "<?type?>". When all the dust settles from the type
243 reconstruction work, this should probably become an error. */
244 type = init_type (TYPE_CODE_INT, 2, 0, "<?type?>", objfile);
245 warning ("internal error: no chill fundamental type %d", typeid);
248 /* FIXME: Currently the GNU Chill compiler emits some DWARF entries for
249 typedefs, unrelated to anything directly in the code being compiled,
250 that have some FT_VOID types. Just fake it for now. */
251 type = init_type (TYPE_CODE_VOID, 0, 0, "<?VOID?>", objfile);
254 type = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, "BOOL", objfile);
257 type = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, "CHAR", objfile);
260 type = init_type (TYPE_CODE_INT, 1, 0, "BYTE", objfile);
262 case FT_UNSIGNED_CHAR:
263 type = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, "UBYTE", objfile);
265 case FT_SHORT: /* Chill ints are 2 bytes */
266 type = init_type (TYPE_CODE_INT, 2, 0, "INT", objfile);
268 case FT_UNSIGNED_SHORT: /* Chill ints are 2 bytes */
269 type = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, "UINT", objfile);
271 case FT_INTEGER: /* FIXME? */
272 case FT_SIGNED_INTEGER: /* FIXME? */
273 case FT_LONG: /* Chill longs are 4 bytes */
274 case FT_SIGNED_LONG: /* Chill longs are 4 bytes */
275 type = init_type (TYPE_CODE_INT, 4, 0, "LONG", objfile);
277 case FT_UNSIGNED_INTEGER: /* FIXME? */
278 case FT_UNSIGNED_LONG: /* Chill longs are 4 bytes */
279 type = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, "ULONG", objfile);
282 type = init_type (TYPE_CODE_FLT, 4, 0, "REAL", objfile);
284 case FT_DBL_PREC_FLOAT:
285 type = init_type (TYPE_CODE_FLT, 8, 0, "LONG_REAL", objfile);
292 /* Table of operators and their precedences for printing expressions. */
294 static const struct op_print chill_op_print_tab[] = {
295 {"AND", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
296 {"OR", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
297 {"NOT", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
298 {"MOD", BINOP_MOD, PREC_MUL, 0},
299 {"REM", BINOP_REM, PREC_MUL, 0},
300 {"SIZE",UNOP_SIZEOF, PREC_BUILTIN_FUNCTION, 0},
301 {"LOWER",UNOP_LOWER, PREC_BUILTIN_FUNCTION, 0},
302 {"UPPER",UNOP_UPPER, PREC_BUILTIN_FUNCTION, 0},
303 {"CARD",UNOP_CARD, PREC_BUILTIN_FUNCTION, 0},
304 {"MAX",UNOP_CHMAX, PREC_BUILTIN_FUNCTION, 0},
305 {"MIN",UNOP_CHMIN, PREC_BUILTIN_FUNCTION, 0},
306 {":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
307 {"=", BINOP_EQUAL, PREC_EQUAL, 0},
308 {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
309 {"<=", BINOP_LEQ, PREC_ORDER, 0},
310 {">=", BINOP_GEQ, PREC_ORDER, 0},
311 {">", BINOP_GTR, PREC_ORDER, 0},
312 {"<", BINOP_LESS, PREC_ORDER, 0},
313 {"+", BINOP_ADD, PREC_ADD, 0},
314 {"-", BINOP_SUB, PREC_ADD, 0},
315 {"*", BINOP_MUL, PREC_MUL, 0},
316 {"/", BINOP_DIV, PREC_MUL, 0},
317 {"//", BINOP_CONCAT, PREC_PREFIX, 0}, /* FIXME: precedence? */
318 {"-", UNOP_NEG, PREC_PREFIX, 0},
319 {"->", UNOP_IND, PREC_SUFFIX, 1},
320 {"->", UNOP_ADDR, PREC_PREFIX, 0},
321 {":", BINOP_RANGE, PREC_ASSIGN, 0},
325 /* The built-in types of Chill. */
327 struct type *builtin_type_chill_bool;
328 struct type *builtin_type_chill_char;
329 struct type *builtin_type_chill_long;
330 struct type *builtin_type_chill_ulong;
331 struct type *builtin_type_chill_real;
333 struct type ** CONST_PTR (chill_builtin_types[]) =
335 &builtin_type_chill_bool,
336 &builtin_type_chill_char,
337 &builtin_type_chill_long,
338 &builtin_type_chill_ulong,
339 &builtin_type_chill_real,
343 /* Calculate LOWER or UPPER of TYPE.
344 Returns the result as an integer.
345 *RESULT_TYPE is the appropriate type for the result. */
348 type_lower_upper (op, type, result_type)
349 enum exp_opcode op; /* Either UNOP_LOWER or UNOP_UPPER */
351 struct type **result_type;
355 CHECK_TYPEDEF (type);
356 switch (TYPE_CODE (type))
358 case TYPE_CODE_STRUCT:
359 *result_type = builtin_type_int;
360 if (chill_varying_type (type))
361 return type_lower_upper (op, TYPE_FIELD_TYPE (type, 1), result_type);
363 case TYPE_CODE_ARRAY:
364 case TYPE_CODE_BITSTRING:
365 case TYPE_CODE_STRING:
366 type = TYPE_FIELD_TYPE (type, 0); /* Get index type */
368 /* ... fall through ... */
369 case TYPE_CODE_RANGE:
370 *result_type = TYPE_TARGET_TYPE (type);
371 return op == UNOP_LOWER ? TYPE_LOW_BOUND (type) : TYPE_HIGH_BOUND (type);
377 if (get_discrete_bounds (type, &low, &high) >= 0)
380 return op == UNOP_LOWER ? low : high;
383 case TYPE_CODE_UNDEF:
385 case TYPE_CODE_UNION:
390 case TYPE_CODE_ERROR:
391 case TYPE_CODE_MEMBER:
392 case TYPE_CODE_METHOD:
394 case TYPE_CODE_COMPLEX:
398 error ("unknown mode for LOWER/UPPER builtin");
402 value_chill_length (val)
406 struct type *type = VALUE_TYPE (val);
408 CHECK_TYPEDEF (type);
409 switch (TYPE_CODE (type))
411 case TYPE_CODE_ARRAY:
412 case TYPE_CODE_BITSTRING:
413 case TYPE_CODE_STRING:
414 tmp = type_lower_upper (UNOP_UPPER, type, &ttype)
415 - type_lower_upper (UNOP_LOWER, type, &ttype) + 1;
417 case TYPE_CODE_STRUCT:
418 if (chill_varying_type (type))
420 tmp = unpack_long (TYPE_FIELD_TYPE (type, 0), VALUE_CONTENTS (val));
423 /* ... else fall through ... */
425 error ("bad argument to LENGTH builtin");
427 return value_from_longest (builtin_type_int, tmp);
431 value_chill_card (val)
435 struct type *type = VALUE_TYPE (val);
436 CHECK_TYPEDEF (type);
438 if (TYPE_CODE (type) == TYPE_CODE_SET)
440 struct type *range_type = TYPE_INDEX_TYPE (type);
441 LONGEST lower_bound, upper_bound;
444 get_discrete_bounds (range_type, &lower_bound, &upper_bound);
445 for (i = lower_bound; i <= upper_bound; i++)
446 if (value_bit_index (type, VALUE_CONTENTS (val), i) > 0)
450 error ("bad argument to CARD builtin");
452 return value_from_longest (builtin_type_int, tmp);
456 value_chill_max_min (op, val)
461 struct type *type = VALUE_TYPE (val);
462 struct type *elttype;
463 CHECK_TYPEDEF (type);
465 if (TYPE_CODE (type) == TYPE_CODE_SET)
467 LONGEST lower_bound, upper_bound;
470 elttype = TYPE_INDEX_TYPE (type);
471 CHECK_TYPEDEF (elttype);
472 get_discrete_bounds (elttype, &lower_bound, &upper_bound);
474 if (op == UNOP_CHMAX)
476 for (i = upper_bound; i >= lower_bound; i--)
478 if (value_bit_index (type, VALUE_CONTENTS (val), i) > 0)
488 for (i = lower_bound; i <= upper_bound; i++)
490 if (value_bit_index (type, VALUE_CONTENTS (val), i) > 0)
499 error ("%s for empty powerset", op == UNOP_CHMAX ? "MAX" : "MIN");
502 error ("bad argument to %s builtin", op == UNOP_CHMAX ? "MAX" : "MIN");
504 return value_from_longest (TYPE_CODE (elttype) == TYPE_CODE_RANGE
505 ? TYPE_TARGET_TYPE (elttype)
511 evaluate_subexp_chill (expect_type, exp, pos, noside)
512 struct type *expect_type;
513 register struct expression *exp;
522 enum exp_opcode op = exp->elts[*pos].opcode;
525 case MULTI_SUBSCRIPT:
526 if (noside == EVAL_SKIP)
529 nargs = longest_to_int (exp->elts[pc + 1].longconst);
530 arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
531 type = check_typedef (VALUE_TYPE (arg1));
533 if (nargs == 1 && TYPE_CODE (type) == TYPE_CODE_INT)
535 /* Looks like string repetition. */
536 value_ptr string = evaluate_subexp_with_coercion (exp, pos, noside);
537 return value_concat (arg1, string);
540 switch (TYPE_CODE (type))
543 type = check_typedef (TYPE_TARGET_TYPE (type));
544 if (!type || TYPE_CODE (type) != TYPE_CODE_FUNC)
545 error ("reference value used as function");
546 /* ... fall through ... */
548 /* It's a function call. */
549 if (noside == EVAL_AVOID_SIDE_EFFECTS)
552 /* Allocate arg vector, including space for the function to be
553 called in argvec[0] and a terminating NULL */
554 argvec = (value_ptr *) alloca (sizeof (value_ptr) * (nargs + 2));
557 for (; tem <= nargs && tem <= TYPE_NFIELDS (type); tem++)
560 = evaluate_subexp_chill (TYPE_FIELD_TYPE (type, tem-1),
563 for (; tem <= nargs; tem++)
564 argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside);
565 argvec[tem] = 0; /* signal end of arglist */
567 return call_function_by_hand (argvec[0], nargs, argvec + 1);
574 value_ptr index = evaluate_subexp_with_coercion (exp, pos, noside);
575 arg1 = value_subscript (arg1, index);
582 if (noside == EVAL_SKIP)
584 (*exp->language_defn->evaluate_exp) (NULL_TYPE, exp, pos, EVAL_SKIP);
587 arg1 = (*exp->language_defn->evaluate_exp) (NULL_TYPE, exp, pos,
588 EVAL_AVOID_SIDE_EFFECTS);
589 tem = type_lower_upper (op, VALUE_TYPE (arg1), &type);
590 return value_from_longest (type, tem);
594 arg1 = (*exp->language_defn->evaluate_exp) (NULL_TYPE, exp, pos, noside);
595 return value_chill_length (arg1);
599 arg1 = (*exp->language_defn->evaluate_exp) (NULL_TYPE, exp, pos, noside);
600 return value_chill_card (arg1);
605 arg1 = (*exp->language_defn->evaluate_exp) (NULL_TYPE, exp, pos, noside);
606 return value_chill_max_min (op, arg1);
609 error ("',' operator used in invalid context");
615 return evaluate_subexp_standard (expect_type, exp, pos, noside);
617 return value_from_longest (builtin_type_long, (LONGEST) 1);
620 const struct language_defn chill_language_defn = {
626 chill_parse, /* parser */
627 chill_error, /* parser error function */
628 evaluate_subexp_chill,
629 chill_printchar, /* print a character constant */
630 chill_printstr, /* function to print a string constant */
631 chill_create_fundamental_type,/* Create fundamental type in this language */
632 chill_print_type, /* Print a type using appropriate syntax */
633 chill_val_print, /* Print a value using appropriate syntax */
634 chill_value_print, /* Print a top-levl value */
635 {"", "B'", "", ""}, /* Binary format info */
636 {"O'%lo", "O'", "o", ""}, /* Octal format info */
637 {"D'%ld", "D'", "d", ""}, /* Decimal format info */
638 {"H'%lx", "H'", "x", ""}, /* Hex format info */
639 chill_op_print_tab, /* expression operators for printing */
640 0, /* arrays are first-class (not c-style) */
641 0, /* String lower bound */
642 &builtin_type_chill_char, /* Type of string elements */
646 /* Initialization for Chill */
649 _initialize_chill_language ()
651 builtin_type_chill_bool =
652 init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
654 "BOOL", (struct objfile *) NULL);
655 builtin_type_chill_char =
656 init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
658 "CHAR", (struct objfile *) NULL);
659 builtin_type_chill_long =
660 init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
662 "LONG", (struct objfile *) NULL);
663 builtin_type_chill_ulong =
664 init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
666 "ULONG", (struct objfile *) NULL);
667 builtin_type_chill_real =
668 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
670 "LONG_REAL", (struct objfile *) NULL);
672 add_language (&chill_language_defn);