Reindented to GNU standard. No semantic changes. This checkin is to
[deliverable/binutils-gdb.git] / gdb / ch-lang.c
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1/* Chill language support routines for GDB, the GNU debugger.
2 Copyright 1992 Free Software Foundation, Inc.
3
4This file is part of GDB.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20#include "defs.h"
21#include "symtab.h"
22#include "gdbtypes.h"
23#include "expression.h"
24#include "parser-defs.h"
25#include "language.h"
26#include "ch-lang.h"
27
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28
29/* For now, Chill uses a simple mangling algorithm whereby you simply
30 discard everything after the occurance of two successive CPLUS_MARKER
31 characters to derive the demangled form. */
32
33char *
34chill_demangle (mangled)
35 const char *mangled;
36{
37 char *joiner;
38 char *demangled;
39
40 joiner = strchr (mangled, CPLUS_MARKER);
41 if (joiner != NULL && *(joiner + 1) == CPLUS_MARKER)
42 {
43 demangled = savestring (mangled, joiner - mangled);
44 }
45 else
46 {
47 demangled = NULL;
48 }
49 return (demangled);
50}
51
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52static void
53chill_printchar (c, stream)
54 register int c;
55 FILE *stream;
56{
57 c &= 0xFF; /* Avoid sign bit follies */
58
59 if (PRINT_LITERAL_FORM (c))
60 {
61 fprintf_filtered (stream, "'%c'", c);
62 }
63 else
64 {
65 fprintf_filtered (stream, "C'%.2x'", (unsigned int) c);
66 }
67}
68
69/* Print the character string STRING, printing at most LENGTH characters.
70 Printing stops early if the number hits print_max; repeat counts
71 are printed as appropriate. Print ellipses at the end if we
72 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
73 Note that gdb maintains the length of strings without counting the
74 terminating null byte, while chill strings are typically written with
75 an explicit null byte. So we always assume an implied null byte
76 until gdb is able to maintain non-null terminated strings as well
77 as null terminated strings (FIXME).
78 */
79
80static void
81chill_printstr (stream, string, length, force_ellipses)
82 FILE *stream;
83 char *string;
84 unsigned int length;
85 int force_ellipses;
86{
87 register unsigned int i;
88 unsigned int things_printed = 0;
89 int in_literal_form = 0;
90 int in_control_form = 0;
91 int need_slashslash = 0;
92 unsigned int c;
93 extern int repeat_count_threshold;
94 extern int print_max;
95
96 if (length == 0)
97 {
98 chill_printchar ('\0', stream);
99 return;
100 }
101
102 for (i = 0; i < length && things_printed < print_max; ++i)
103 {
104 /* Position of the character we are examining
105 to see whether it is repeated. */
106 unsigned int rep1;
107 /* Number of repetitions we have detected so far. */
108 unsigned int reps;
109
110 QUIT;
111
112 if (need_slashslash)
113 {
114 fputs_filtered ("//", stream);
115 need_slashslash = 0;
116 }
117
118 rep1 = i + 1;
119 reps = 1;
120 while (rep1 < length && string[rep1] == string[i])
121 {
122 ++rep1;
123 ++reps;
124 }
125
126 c = string[i];
127 if (reps > repeat_count_threshold)
128 {
129 if (in_control_form || in_literal_form)
130 {
131 fputs_filtered ("'//", stream);
132 in_control_form = in_literal_form = 0;
133 }
134 chill_printchar (c, stream);
135 fprintf_filtered (stream, "<repeats %u times>", reps);
136 i = rep1 - 1;
137 things_printed += repeat_count_threshold;
138 need_slashslash = 1;
139 }
140 else
141 {
142 if (PRINT_LITERAL_FORM (c))
143 {
144 if (!in_literal_form)
145 {
146 if (in_control_form)
147 {
148 fputs_filtered ("'//", stream);
149 in_control_form = 0;
150 }
151 fputs_filtered ("'", stream);
152 in_literal_form = 1;
153 }
154 fprintf_filtered (stream, "%c", c);
155 }
156 else
157 {
158 if (!in_control_form)
159 {
160 if (in_literal_form)
161 {
162 fputs_filtered ("'//", stream);
163 in_literal_form = 0;
164 }
165 fputs_filtered ("c'", stream);
166 in_control_form = 1;
167 }
168 fprintf_filtered (stream, "%.2x", c);
169 }
170 ++things_printed;
171 }
172 }
173
174 /* Terminate the quotes if necessary. */
175 if (in_literal_form || in_control_form)
176 {
177 fputs_filtered ("'", stream);
178 }
179 if (force_ellipses || (i < length))
180 {
181 fputs_filtered ("...", stream);
182 }
183}
184
185static struct type *
186chill_create_fundamental_type (objfile, typeid)
187 struct objfile *objfile;
188 int typeid;
189{
190 register struct type *type = NULL;
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191
192 switch (typeid)
193 {
194 default:
195 /* FIXME: For now, if we are asked to produce a type not in this
196 language, create the equivalent of a C integer type with the
197 name "<?type?>". When all the dust settles from the type
198 reconstruction work, this should probably become an error. */
a8a69e63 199 type = init_type (TYPE_CODE_INT, 2, 0, "<?type?>", objfile);
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200 warning ("internal error: no chill fundamental type %d", typeid);
201 break;
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202 case FT_VOID:
203 /* FIXME: Currently the GNU Chill compiler emits some DWARF entries for
204 typedefs, unrelated to anything directly in the code being compiled,
205 that have some FT_VOID types. Just fake it for now. */
206 type = init_type (TYPE_CODE_VOID, 0, 0, "<?VOID?>", objfile);
207 break;
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208 case FT_BOOLEAN:
209 type = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, "BOOL", objfile);
210 break;
211 case FT_CHAR:
a8a69e63 212 type = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, "CHAR", objfile);
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213 break;
214 case FT_SIGNED_CHAR:
215 type = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_SIGNED, "BYTE", objfile);
216 break;
217 case FT_UNSIGNED_CHAR:
218 type = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, "UBYTE", objfile);
219 break;
220 case FT_SHORT: /* Chill ints are 2 bytes */
221 type = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_SIGNED, "INT", objfile);
222 break;
223 case FT_UNSIGNED_SHORT: /* Chill ints are 2 bytes */
224 type = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, "UINT", objfile);
225 break;
226 case FT_INTEGER: /* Chill longs are 4 bytes */
227 type = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_SIGNED, "LONG", objfile);
228 break;
229 case FT_UNSIGNED_INTEGER: /* Chill longs are 4 bytes */
230 type = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, "ULONG", objfile);
231 break;
232 case FT_FLOAT:
233 type = init_type (TYPE_CODE_FLT, 4, 0, "REAL", objfile);
234 break;
235 case FT_DBL_PREC_FLOAT:
236 type = init_type (TYPE_CODE_FLT, 8, 0, "LONG_REAL", objfile);
237 break;
238 }
239 return (type);
240}
241
242\f
243/* Table of operators and their precedences for printing expressions. */
244
a8a69e63 245static const struct op_print chill_op_print_tab[] = {
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246 {"AND", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
247 {"OR", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
248 {"NOT", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
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249 {"MOD", BINOP_MOD, PREC_MUL, 0},
250 {"REM", BINOP_REM, PREC_MUL, 0},
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251 {":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
252 {"=", BINOP_EQUAL, PREC_EQUAL, 0},
253 {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
254 {"<=", BINOP_LEQ, PREC_ORDER, 0},
255 {">=", BINOP_GEQ, PREC_ORDER, 0},
256 {">", BINOP_GTR, PREC_ORDER, 0},
257 {"<", BINOP_LESS, PREC_ORDER, 0},
258 {"+", BINOP_ADD, PREC_ADD, 0},
259 {"-", BINOP_SUB, PREC_ADD, 0},
260 {"*", BINOP_MUL, PREC_MUL, 0},
261 {"/", BINOP_DIV, PREC_MUL, 0},
fcbadaee 262 {"//", BINOP_CONCAT, PREC_PREFIX, 0}, /* FIXME: precedence? */
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263 {"-", UNOP_NEG, PREC_PREFIX, 0},
264 {NULL, 0, 0, 0}
265};
266
267\f
268/* The built-in types of Chill. */
269
270struct type *builtin_type_chill_bool;
271struct type *builtin_type_chill_char;
272struct type *builtin_type_chill_long;
273struct type *builtin_type_chill_ulong;
274struct type *builtin_type_chill_real;
275
276struct type ** const (chill_builtin_types[]) =
277{
278 &builtin_type_chill_bool,
279 &builtin_type_chill_char,
280 &builtin_type_chill_long,
281 &builtin_type_chill_ulong,
282 &builtin_type_chill_real,
283 0
284};
285
286const struct language_defn chill_language_defn = {
287 "chill",
288 language_chill,
289 chill_builtin_types,
290 range_check_on,
291 type_check_on,
292 chill_parse, /* parser */
293 chill_error, /* parser error function */
294 chill_printchar, /* print a character constant */
295 chill_printstr, /* function to print a string constant */
296 chill_create_fundamental_type,/* Create fundamental type in this language */
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297 chill_print_type, /* Print a type using appropriate syntax */
298 chill_val_print, /* Print a value using appropriate syntax */
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299 &BUILTIN_TYPE_LONGEST, /* longest signed integral type */
300 &BUILTIN_TYPE_UNSIGNED_LONGEST,/* longest unsigned integral type */
301 &builtin_type_chill_real, /* longest floating point type */
302 {"", "B'", "", ""}, /* Binary format info */
303 {"O'%o", "O'", "o", ""}, /* Octal format info */
304 {"D'%d", "D'", "d", ""}, /* Decimal format info */
305 {"H'%x", "H'", "x", ""}, /* Hex format info */
306 chill_op_print_tab, /* expression operators for printing */
307 LANG_MAGIC
308};
309
310/* Initialization for Chill */
311
312void
d62e7a20 313_initialize_chill_language ()
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314{
315 builtin_type_chill_bool =
316 init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
317 TYPE_FLAG_UNSIGNED,
318 "BOOL", (struct objfile *) NULL);
319 builtin_type_chill_char =
320 init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
321 TYPE_FLAG_UNSIGNED,
322 "CHAR", (struct objfile *) NULL);
323 builtin_type_chill_long =
324 init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
325 0,
326 "LONG", (struct objfile *) NULL);
327 builtin_type_chill_ulong =
328 init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
329 TYPE_FLAG_UNSIGNED,
330 "ULONG", (struct objfile *) NULL);
331 builtin_type_chill_real =
332 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
333 0,
334 "LONG_REAL", (struct objfile *) NULL);
335
336 add_language (&chill_language_defn);
337}
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