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1/*
2 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
3 *
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
18 * USA
19 */
20%{
21#include <stdio.h>
22#include <inttypes.h>
23
24#include "dtc.h"
25#include "srcpos.h"
26
27extern int yylex(void);
28extern void yyerror(char const *s);
29#define ERROR(loc, ...) \
30 do { \
31 srcpos_error((loc), "Error", __VA_ARGS__); \
32 treesource_error = true; \
33 } while (0)
34
35extern struct dt_info *parser_output;
36extern bool treesource_error;
37%}
38
39%union {
40 char *propnodename;
41 char *labelref;
42 uint8_t byte;
43 struct data data;
44
45 struct {
46 struct data data;
47 int bits;
48 } array;
49
50 struct property *prop;
51 struct property *proplist;
52 struct node *node;
53 struct node *nodelist;
54 struct reserve_info *re;
55 uint64_t integer;
56 unsigned int flags;
57}
58
59%token DT_V1
60%token DT_PLUGIN
61%token DT_MEMRESERVE
62%token DT_LSHIFT DT_RSHIFT DT_LE DT_GE DT_EQ DT_NE DT_AND DT_OR
63%token DT_BITS
64%token DT_DEL_PROP
65%token DT_DEL_NODE
66%token <propnodename> DT_PROPNODENAME
67%token <integer> DT_LITERAL
68%token <integer> DT_CHAR_LITERAL
69%token <byte> DT_BYTE
70%token <data> DT_STRING
71%token <labelref> DT_LABEL
72%token <labelref> DT_REF
73%token DT_INCBIN
74
75%type <data> propdata
76%type <data> propdataprefix
77%type <flags> header
78%type <flags> headers
79%type <re> memreserve
80%type <re> memreserves
81%type <array> arrayprefix
82%type <data> bytestring
83%type <prop> propdef
84%type <proplist> proplist
85
86%type <node> devicetree
87%type <node> nodedef
88%type <node> subnode
89%type <nodelist> subnodes
90
91%type <integer> integer_prim
92%type <integer> integer_unary
93%type <integer> integer_mul
94%type <integer> integer_add
95%type <integer> integer_shift
96%type <integer> integer_rela
97%type <integer> integer_eq
98%type <integer> integer_bitand
99%type <integer> integer_bitxor
100%type <integer> integer_bitor
101%type <integer> integer_and
102%type <integer> integer_or
103%type <integer> integer_trinary
104%type <integer> integer_expr
105
106%%
107
108sourcefile:
109 headers memreserves devicetree
110 {
111 parser_output = build_dt_info($1, $2, $3,
112 guess_boot_cpuid($3));
113 }
114 ;
115
116header:
117 DT_V1 ';'
118 {
119 $$ = DTSF_V1;
120 }
121 | DT_V1 ';' DT_PLUGIN ';'
122 {
123 $$ = DTSF_V1 | DTSF_PLUGIN;
124 }
125 ;
126
127headers:
128 header
129 | header headers
130 {
131 if ($2 != $1)
132 ERROR(&@2, "Header flags don't match earlier ones");
133 $$ = $1;
134 }
135 ;
136
137memreserves:
138 /* empty */
139 {
140 $$ = NULL;
141 }
142 | memreserve memreserves
143 {
144 $$ = chain_reserve_entry($1, $2);
145 }
146 ;
147
148memreserve:
149 DT_MEMRESERVE integer_prim integer_prim ';'
150 {
151 $$ = build_reserve_entry($2, $3);
152 }
153 | DT_LABEL memreserve
154 {
155 add_label(&$2->labels, $1);
156 $$ = $2;
157 }
158 ;
159
160devicetree:
161 '/' nodedef
162 {
163 $$ = name_node($2, "");
164 }
165 | devicetree '/' nodedef
166 {
167 $$ = merge_nodes($1, $3);
168 }
169 | DT_REF nodedef
170 {
171 /*
172 * We rely on the rule being always:
173 * versioninfo plugindecl memreserves devicetree
174 * so $-1 is what we want (plugindecl)
175 */
176 if (!($<flags>-1 & DTSF_PLUGIN))
177 ERROR(&@2, "Label or path %s not found", $1);
178 $$ = add_orphan_node(name_node(build_node(NULL, NULL), ""), $2, $1);
179 }
180 | devicetree DT_LABEL DT_REF nodedef
181 {
182 struct node *target = get_node_by_ref($1, $3);
183
184 if (target) {
185 add_label(&target->labels, $2);
186 merge_nodes(target, $4);
187 } else
188 ERROR(&@3, "Label or path %s not found", $3);
189 $$ = $1;
190 }
191 | devicetree DT_REF nodedef
192 {
193 struct node *target = get_node_by_ref($1, $2);
194
195 if (target) {
196 merge_nodes(target, $3);
197 } else {
198 /*
199 * We rely on the rule being always:
200 * versioninfo plugindecl memreserves devicetree
201 * so $-1 is what we want (plugindecl)
202 */
203 if ($<flags>-1 & DTSF_PLUGIN)
204 add_orphan_node($1, $3, $2);
205 else
206 ERROR(&@2, "Label or path %s not found", $2);
207 }
208 $$ = $1;
209 }
210 | devicetree DT_DEL_NODE DT_REF ';'
211 {
212 struct node *target = get_node_by_ref($1, $3);
213
214 if (target)
215 delete_node(target);
216 else
217 ERROR(&@3, "Label or path %s not found", $3);
218
219
220 $$ = $1;
221 }
222 ;
223
224nodedef:
225 '{' proplist subnodes '}' ';'
226 {
227 $$ = build_node($2, $3);
228 }
229 ;
230
231proplist:
232 /* empty */
233 {
234 $$ = NULL;
235 }
236 | proplist propdef
237 {
238 $$ = chain_property($2, $1);
239 }
240 ;
241
242propdef:
243 DT_PROPNODENAME '=' propdata ';'
244 {
245 $$ = build_property($1, $3);
246 }
247 | DT_PROPNODENAME ';'
248 {
249 $$ = build_property($1, empty_data);
250 }
251 | DT_DEL_PROP DT_PROPNODENAME ';'
252 {
253 $$ = build_property_delete($2);
254 }
255 | DT_LABEL propdef
256 {
257 add_label(&$2->labels, $1);
258 $$ = $2;
259 }
260 ;
261
262propdata:
263 propdataprefix DT_STRING
264 {
265 $$ = data_merge($1, $2);
266 }
267 | propdataprefix arrayprefix '>'
268 {
269 $$ = data_merge($1, $2.data);
270 }
271 | propdataprefix '[' bytestring ']'
272 {
273 $$ = data_merge($1, $3);
274 }
275 | propdataprefix DT_REF
276 {
277 $$ = data_add_marker($1, REF_PATH, $2);
278 }
279 | propdataprefix DT_INCBIN '(' DT_STRING ',' integer_prim ',' integer_prim ')'
280 {
281 FILE *f = srcfile_relative_open($4.val, NULL);
282 struct data d;
283
284 if ($6 != 0)
285 if (fseek(f, $6, SEEK_SET) != 0)
286 die("Couldn't seek to offset %llu in \"%s\": %s",
287 (unsigned long long)$6, $4.val,
288 strerror(errno));
289
290 d = data_copy_file(f, $8);
291
292 $$ = data_merge($1, d);
293 fclose(f);
294 }
295 | propdataprefix DT_INCBIN '(' DT_STRING ')'
296 {
297 FILE *f = srcfile_relative_open($4.val, NULL);
298 struct data d = empty_data;
299
300 d = data_copy_file(f, -1);
301
302 $$ = data_merge($1, d);
303 fclose(f);
304 }
305 | propdata DT_LABEL
306 {
307 $$ = data_add_marker($1, LABEL, $2);
308 }
309 ;
310
311propdataprefix:
312 /* empty */
313 {
314 $$ = empty_data;
315 }
316 | propdata ','
317 {
318 $$ = $1;
319 }
320 | propdataprefix DT_LABEL
321 {
322 $$ = data_add_marker($1, LABEL, $2);
323 }
324 ;
325
326arrayprefix:
327 DT_BITS DT_LITERAL '<'
328 {
329 unsigned long long bits;
330
331 bits = $2;
332
333 if ((bits != 8) && (bits != 16) &&
334 (bits != 32) && (bits != 64)) {
335 ERROR(&@2, "Array elements must be"
336 " 8, 16, 32 or 64-bits");
337 bits = 32;
338 }
339
340 $$.data = empty_data;
341 $$.bits = bits;
342 }
343 | '<'
344 {
345 $$.data = empty_data;
346 $$.bits = 32;
347 }
348 | arrayprefix integer_prim
349 {
350 if ($1.bits < 64) {
351 uint64_t mask = (1ULL << $1.bits) - 1;
352 /*
353 * Bits above mask must either be all zero
354 * (positive within range of mask) or all one
355 * (negative and sign-extended). The second
356 * condition is true if when we set all bits
357 * within the mask to one (i.e. | in the
358 * mask), all bits are one.
359 */
360 if (($2 > mask) && (($2 | mask) != -1ULL))
361 ERROR(&@2, "Value out of range for"
362 " %d-bit array element", $1.bits);
363 }
364
365 $$.data = data_append_integer($1.data, $2, $1.bits);
366 }
367 | arrayprefix DT_REF
368 {
369 uint64_t val = ~0ULL >> (64 - $1.bits);
370
371 if ($1.bits == 32)
372 $1.data = data_add_marker($1.data,
373 REF_PHANDLE,
374 $2);
375 else
376 ERROR(&@2, "References are only allowed in "
377 "arrays with 32-bit elements.");
378
379 $$.data = data_append_integer($1.data, val, $1.bits);
380 }
381 | arrayprefix DT_LABEL
382 {
383 $$.data = data_add_marker($1.data, LABEL, $2);
384 }
385 ;
386
387integer_prim:
388 DT_LITERAL
389 | DT_CHAR_LITERAL
390 | '(' integer_expr ')'
391 {
392 $$ = $2;
393 }
394 ;
395
396integer_expr:
397 integer_trinary
398 ;
399
400integer_trinary:
401 integer_or
402 | integer_or '?' integer_expr ':' integer_trinary { $$ = $1 ? $3 : $5; }
403 ;
404
405integer_or:
406 integer_and
407 | integer_or DT_OR integer_and { $$ = $1 || $3; }
408 ;
409
410integer_and:
411 integer_bitor
412 | integer_and DT_AND integer_bitor { $$ = $1 && $3; }
413 ;
414
415integer_bitor:
416 integer_bitxor
417 | integer_bitor '|' integer_bitxor { $$ = $1 | $3; }
418 ;
419
420integer_bitxor:
421 integer_bitand
422 | integer_bitxor '^' integer_bitand { $$ = $1 ^ $3; }
423 ;
424
425integer_bitand:
426 integer_eq
427 | integer_bitand '&' integer_eq { $$ = $1 & $3; }
428 ;
429
430integer_eq:
431 integer_rela
432 | integer_eq DT_EQ integer_rela { $$ = $1 == $3; }
433 | integer_eq DT_NE integer_rela { $$ = $1 != $3; }
434 ;
435
436integer_rela:
437 integer_shift
438 | integer_rela '<' integer_shift { $$ = $1 < $3; }
439 | integer_rela '>' integer_shift { $$ = $1 > $3; }
440 | integer_rela DT_LE integer_shift { $$ = $1 <= $3; }
441 | integer_rela DT_GE integer_shift { $$ = $1 >= $3; }
442 ;
443
444integer_shift:
445 integer_shift DT_LSHIFT integer_add { $$ = $1 << $3; }
446 | integer_shift DT_RSHIFT integer_add { $$ = $1 >> $3; }
447 | integer_add
448 ;
449
450integer_add:
451 integer_add '+' integer_mul { $$ = $1 + $3; }
452 | integer_add '-' integer_mul { $$ = $1 - $3; }
453 | integer_mul
454 ;
455
456integer_mul:
457 integer_mul '*' integer_unary { $$ = $1 * $3; }
458 | integer_mul '/' integer_unary
459 {
460 if ($3 != 0) {
461 $$ = $1 / $3;
462 } else {
463 ERROR(&@$, "Division by zero");
464 $$ = 0;
465 }
466 }
467 | integer_mul '%' integer_unary
468 {
469 if ($3 != 0) {
470 $$ = $1 % $3;
471 } else {
472 ERROR(&@$, "Division by zero");
473 $$ = 0;
474 }
475 }
476 | integer_unary
477 ;
478
479integer_unary:
480 integer_prim
481 | '-' integer_unary { $$ = -$2; }
482 | '~' integer_unary { $$ = ~$2; }
483 | '!' integer_unary { $$ = !$2; }
484 ;
485
486bytestring:
487 /* empty */
488 {
489 $$ = empty_data;
490 }
491 | bytestring DT_BYTE
492 {
493 $$ = data_append_byte($1, $2);
494 }
495 | bytestring DT_LABEL
496 {
497 $$ = data_add_marker($1, LABEL, $2);
498 }
499 ;
500
501subnodes:
502 /* empty */
503 {
504 $$ = NULL;
505 }
506 | subnode subnodes
507 {
508 $$ = chain_node($1, $2);
509 }
510 | subnode propdef
511 {
512 ERROR(&@2, "Properties must precede subnodes");
513 YYERROR;
514 }
515 ;
516
517subnode:
518 DT_PROPNODENAME nodedef
519 {
520 $$ = name_node($2, $1);
521 }
522 | DT_DEL_NODE DT_PROPNODENAME ';'
523 {
524 $$ = name_node(build_node_delete(), $2);
525 }
526 | DT_LABEL subnode
527 {
528 add_label(&$2->labels, $1);
529 $$ = $2;
530 }
531 ;
532
533%%
534
535void yyerror(char const *s)
536{
537 ERROR(&yylloc, "%s", s);
538}
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
4 */
5%locations
6
7%{
8#include <stdio.h>
9#include <inttypes.h>
10
11#include "dtc.h"
12#include "srcpos.h"
13
14extern int yylex(void);
15extern void yyerror(char const *s);
16#define ERROR(loc, ...) \
17 do { \
18 srcpos_error((loc), "Error", __VA_ARGS__); \
19 treesource_error = true; \
20 } while (0)
21
22#define YYERROR_CALL(msg) yyerror(msg)
23
24extern struct dt_info *parser_output;
25extern bool treesource_error;
26%}
27
28%union {
29 char *propnodename;
30 char *labelref;
31 uint8_t byte;
32 struct data data;
33
34 struct {
35 struct data data;
36 int bits;
37 } array;
38
39 struct property *prop;
40 struct property *proplist;
41 struct node *node;
42 struct node *nodelist;
43 struct reserve_info *re;
44 uint64_t integer;
45 unsigned int flags;
46}
47
48%token DT_V1
49%token DT_PLUGIN
50%token DT_MEMRESERVE
51%token DT_LSHIFT DT_RSHIFT DT_LE DT_GE DT_EQ DT_NE DT_AND DT_OR
52%token DT_BITS
53%token DT_DEL_PROP
54%token DT_DEL_NODE
55%token DT_OMIT_NO_REF
56%token <propnodename> DT_PROPNODENAME
57%token <integer> DT_LITERAL
58%token <integer> DT_CHAR_LITERAL
59%token <byte> DT_BYTE
60%token <data> DT_STRING
61%token <labelref> DT_LABEL
62%token <labelref> DT_LABEL_REF
63%token <labelref> DT_PATH_REF
64%token DT_INCBIN
65
66%type <data> propdata
67%type <data> propdataprefix
68%type <flags> header
69%type <flags> headers
70%type <re> memreserve
71%type <re> memreserves
72%type <array> arrayprefix
73%type <data> bytestring
74%type <prop> propdef
75%type <proplist> proplist
76%type <labelref> dt_ref
77
78%type <node> devicetree
79%type <node> nodedef
80%type <node> subnode
81%type <nodelist> subnodes
82
83%type <integer> integer_prim
84%type <integer> integer_unary
85%type <integer> integer_mul
86%type <integer> integer_add
87%type <integer> integer_shift
88%type <integer> integer_rela
89%type <integer> integer_eq
90%type <integer> integer_bitand
91%type <integer> integer_bitxor
92%type <integer> integer_bitor
93%type <integer> integer_and
94%type <integer> integer_or
95%type <integer> integer_trinary
96%type <integer> integer_expr
97
98%%
99
100sourcefile:
101 headers memreserves devicetree
102 {
103 parser_output = build_dt_info($1, $2, $3,
104 guess_boot_cpuid($3));
105 }
106 ;
107
108header:
109 DT_V1 ';'
110 {
111 $$ = DTSF_V1;
112 }
113 | DT_V1 ';' DT_PLUGIN ';'
114 {
115 $$ = DTSF_V1 | DTSF_PLUGIN;
116 }
117 ;
118
119headers:
120 header
121 | header headers
122 {
123 if ($2 != $1)
124 ERROR(&@2, "Header flags don't match earlier ones");
125 $$ = $1;
126 }
127 ;
128
129memreserves:
130 /* empty */
131 {
132 $$ = NULL;
133 }
134 | memreserve memreserves
135 {
136 $$ = chain_reserve_entry($1, $2);
137 }
138 ;
139
140memreserve:
141 DT_MEMRESERVE integer_prim integer_prim ';'
142 {
143 $$ = build_reserve_entry($2, $3);
144 }
145 | DT_LABEL memreserve
146 {
147 add_label(&$2->labels, $1);
148 $$ = $2;
149 }
150 ;
151
152dt_ref: DT_LABEL_REF | DT_PATH_REF;
153
154devicetree:
155 '/' nodedef
156 {
157 $$ = name_node($2, "");
158 }
159 | devicetree '/' nodedef
160 {
161 $$ = merge_nodes($1, $3);
162 }
163 | dt_ref nodedef
164 {
165 /*
166 * We rely on the rule being always:
167 * versioninfo plugindecl memreserves devicetree
168 * so $-1 is what we want (plugindecl)
169 */
170 if (!($<flags>-1 & DTSF_PLUGIN))
171 ERROR(&@2, "Label or path %s not found", $1);
172 $$ = add_orphan_node(
173 name_node(build_node(NULL, NULL, NULL),
174 ""),
175 $2, $1);
176 }
177 | devicetree DT_LABEL dt_ref nodedef
178 {
179 struct node *target = get_node_by_ref($1, $3);
180
181 if (target) {
182 add_label(&target->labels, $2);
183 merge_nodes(target, $4);
184 } else
185 ERROR(&@3, "Label or path %s not found", $3);
186 $$ = $1;
187 }
188 | devicetree DT_PATH_REF nodedef
189 {
190 /*
191 * We rely on the rule being always:
192 * versioninfo plugindecl memreserves devicetree
193 * so $-1 is what we want (plugindecl)
194 */
195 if ($<flags>-1 & DTSF_PLUGIN) {
196 add_orphan_node($1, $3, $2);
197 } else {
198 struct node *target = get_node_by_ref($1, $2);
199
200 if (target)
201 merge_nodes(target, $3);
202 else
203 ERROR(&@2, "Label or path %s not found", $2);
204 }
205 $$ = $1;
206 }
207 | devicetree DT_LABEL_REF nodedef
208 {
209 struct node *target = get_node_by_ref($1, $2);
210
211 if (target) {
212 merge_nodes(target, $3);
213 } else {
214 /*
215 * We rely on the rule being always:
216 * versioninfo plugindecl memreserves devicetree
217 * so $-1 is what we want (plugindecl)
218 */
219 if ($<flags>-1 & DTSF_PLUGIN)
220 add_orphan_node($1, $3, $2);
221 else
222 ERROR(&@2, "Label or path %s not found", $2);
223 }
224 $$ = $1;
225 }
226 | devicetree DT_DEL_NODE dt_ref ';'
227 {
228 struct node *target = get_node_by_ref($1, $3);
229
230 if (target)
231 delete_node(target);
232 else
233 ERROR(&@3, "Label or path %s not found", $3);
234
235
236 $$ = $1;
237 }
238 | devicetree DT_OMIT_NO_REF dt_ref ';'
239 {
240 struct node *target = get_node_by_ref($1, $3);
241
242 if (target)
243 omit_node_if_unused(target);
244 else
245 ERROR(&@3, "Label or path %s not found", $3);
246
247
248 $$ = $1;
249 }
250 ;
251
252nodedef:
253 '{' proplist subnodes '}' ';'
254 {
255 $$ = build_node($2, $3, &@$);
256 }
257 ;
258
259proplist:
260 /* empty */
261 {
262 $$ = NULL;
263 }
264 | proplist propdef
265 {
266 $$ = chain_property($2, $1);
267 }
268 ;
269
270propdef:
271 DT_PROPNODENAME '=' propdata ';'
272 {
273 $$ = build_property($1, $3, &@$);
274 }
275 | DT_PROPNODENAME ';'
276 {
277 $$ = build_property($1, empty_data, &@$);
278 }
279 | DT_DEL_PROP DT_PROPNODENAME ';'
280 {
281 $$ = build_property_delete($2);
282 }
283 | DT_LABEL propdef
284 {
285 add_label(&$2->labels, $1);
286 $$ = $2;
287 }
288 ;
289
290propdata:
291 propdataprefix DT_STRING
292 {
293 $$ = data_merge($1, $2);
294 }
295 | propdataprefix arrayprefix '>'
296 {
297 $$ = data_merge($1, $2.data);
298 }
299 | propdataprefix '[' bytestring ']'
300 {
301 $$ = data_merge($1, $3);
302 }
303 | propdataprefix dt_ref
304 {
305 $1 = data_add_marker($1, TYPE_STRING, $2);
306 $$ = data_add_marker($1, REF_PATH, $2);
307 }
308 | propdataprefix DT_INCBIN '(' DT_STRING ',' integer_prim ',' integer_prim ')'
309 {
310 FILE *f = srcfile_relative_open($4.val, NULL);
311 struct data d;
312
313 if ($6 != 0)
314 if (fseek(f, $6, SEEK_SET) != 0)
315 die("Couldn't seek to offset %llu in \"%s\": %s",
316 (unsigned long long)$6, $4.val,
317 strerror(errno));
318
319 d = data_copy_file(f, $8);
320
321 $$ = data_merge($1, d);
322 fclose(f);
323 }
324 | propdataprefix DT_INCBIN '(' DT_STRING ')'
325 {
326 FILE *f = srcfile_relative_open($4.val, NULL);
327 struct data d = empty_data;
328
329 d = data_copy_file(f, -1);
330
331 $$ = data_merge($1, d);
332 fclose(f);
333 }
334 | propdata DT_LABEL
335 {
336 $$ = data_add_marker($1, LABEL, $2);
337 }
338 ;
339
340propdataprefix:
341 /* empty */
342 {
343 $$ = empty_data;
344 }
345 | propdata ','
346 {
347 $$ = $1;
348 }
349 | propdataprefix DT_LABEL
350 {
351 $$ = data_add_marker($1, LABEL, $2);
352 }
353 ;
354
355arrayprefix:
356 DT_BITS DT_LITERAL '<'
357 {
358 unsigned long long bits;
359 enum markertype type = TYPE_UINT32;
360
361 bits = $2;
362
363 switch (bits) {
364 case 8: type = TYPE_UINT8; break;
365 case 16: type = TYPE_UINT16; break;
366 case 32: type = TYPE_UINT32; break;
367 case 64: type = TYPE_UINT64; break;
368 default:
369 ERROR(&@2, "Array elements must be"
370 " 8, 16, 32 or 64-bits");
371 bits = 32;
372 }
373
374 $$.data = data_add_marker(empty_data, type, NULL);
375 $$.bits = bits;
376 }
377 | '<'
378 {
379 $$.data = data_add_marker(empty_data, TYPE_UINT32, NULL);
380 $$.bits = 32;
381 }
382 | arrayprefix integer_prim
383 {
384 if ($1.bits < 64) {
385 uint64_t mask = (1ULL << $1.bits) - 1;
386 /*
387 * Bits above mask must either be all zero
388 * (positive within range of mask) or all one
389 * (negative and sign-extended). The second
390 * condition is true if when we set all bits
391 * within the mask to one (i.e. | in the
392 * mask), all bits are one.
393 */
394 if (($2 > mask) && (($2 | mask) != -1ULL))
395 ERROR(&@2, "Value out of range for"
396 " %d-bit array element", $1.bits);
397 }
398
399 $$.data = data_append_integer($1.data, $2, $1.bits);
400 }
401 | arrayprefix dt_ref
402 {
403 uint64_t val = ~0ULL >> (64 - $1.bits);
404
405 if ($1.bits == 32)
406 $1.data = data_add_marker($1.data,
407 REF_PHANDLE,
408 $2);
409 else
410 ERROR(&@2, "References are only allowed in "
411 "arrays with 32-bit elements.");
412
413 $$.data = data_append_integer($1.data, val, $1.bits);
414 }
415 | arrayprefix DT_LABEL
416 {
417 $$.data = data_add_marker($1.data, LABEL, $2);
418 }
419 ;
420
421integer_prim:
422 DT_LITERAL
423 | DT_CHAR_LITERAL
424 | '(' integer_expr ')'
425 {
426 $$ = $2;
427 }
428 ;
429
430integer_expr:
431 integer_trinary
432 ;
433
434integer_trinary:
435 integer_or
436 | integer_or '?' integer_expr ':' integer_trinary { $$ = $1 ? $3 : $5; }
437 ;
438
439integer_or:
440 integer_and
441 | integer_or DT_OR integer_and { $$ = $1 || $3; }
442 ;
443
444integer_and:
445 integer_bitor
446 | integer_and DT_AND integer_bitor { $$ = $1 && $3; }
447 ;
448
449integer_bitor:
450 integer_bitxor
451 | integer_bitor '|' integer_bitxor { $$ = $1 | $3; }
452 ;
453
454integer_bitxor:
455 integer_bitand
456 | integer_bitxor '^' integer_bitand { $$ = $1 ^ $3; }
457 ;
458
459integer_bitand:
460 integer_eq
461 | integer_bitand '&' integer_eq { $$ = $1 & $3; }
462 ;
463
464integer_eq:
465 integer_rela
466 | integer_eq DT_EQ integer_rela { $$ = $1 == $3; }
467 | integer_eq DT_NE integer_rela { $$ = $1 != $3; }
468 ;
469
470integer_rela:
471 integer_shift
472 | integer_rela '<' integer_shift { $$ = $1 < $3; }
473 | integer_rela '>' integer_shift { $$ = $1 > $3; }
474 | integer_rela DT_LE integer_shift { $$ = $1 <= $3; }
475 | integer_rela DT_GE integer_shift { $$ = $1 >= $3; }
476 ;
477
478integer_shift:
479 integer_shift DT_LSHIFT integer_add { $$ = $1 << $3; }
480 | integer_shift DT_RSHIFT integer_add { $$ = $1 >> $3; }
481 | integer_add
482 ;
483
484integer_add:
485 integer_add '+' integer_mul { $$ = $1 + $3; }
486 | integer_add '-' integer_mul { $$ = $1 - $3; }
487 | integer_mul
488 ;
489
490integer_mul:
491 integer_mul '*' integer_unary { $$ = $1 * $3; }
492 | integer_mul '/' integer_unary
493 {
494 if ($3 != 0) {
495 $$ = $1 / $3;
496 } else {
497 ERROR(&@$, "Division by zero");
498 $$ = 0;
499 }
500 }
501 | integer_mul '%' integer_unary
502 {
503 if ($3 != 0) {
504 $$ = $1 % $3;
505 } else {
506 ERROR(&@$, "Division by zero");
507 $$ = 0;
508 }
509 }
510 | integer_unary
511 ;
512
513integer_unary:
514 integer_prim
515 | '-' integer_unary { $$ = -$2; }
516 | '~' integer_unary { $$ = ~$2; }
517 | '!' integer_unary { $$ = !$2; }
518 ;
519
520bytestring:
521 /* empty */
522 {
523 $$ = data_add_marker(empty_data, TYPE_UINT8, NULL);
524 }
525 | bytestring DT_BYTE
526 {
527 $$ = data_append_byte($1, $2);
528 }
529 | bytestring DT_LABEL
530 {
531 $$ = data_add_marker($1, LABEL, $2);
532 }
533 ;
534
535subnodes:
536 /* empty */
537 {
538 $$ = NULL;
539 }
540 | subnode subnodes
541 {
542 $$ = chain_node($1, $2);
543 }
544 | subnode propdef
545 {
546 ERROR(&@2, "Properties must precede subnodes");
547 YYERROR;
548 }
549 ;
550
551subnode:
552 DT_PROPNODENAME nodedef
553 {
554 $$ = name_node($2, $1);
555 }
556 | DT_DEL_NODE DT_PROPNODENAME ';'
557 {
558 $$ = name_node(build_node_delete(&@$), $2);
559 }
560 | DT_OMIT_NO_REF subnode
561 {
562 $$ = omit_node_if_unused($2);
563 }
564 | DT_LABEL subnode
565 {
566 add_label(&$2->labels, $1);
567 $$ = $2;
568 }
569 ;
570
571%%
572
573void yyerror(char const *s)
574{
575 ERROR(&yylloc, "%s", s);
576}