Commit | Line | Data |
---|---|---|
97b58163 MD |
1 | /* |
2 | * lttng-filter-specialize.c | |
3 | * | |
4 | * LTTng UST filter code specializer. | |
5 | * | |
6 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
7 | * | |
8 | * This library is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; only | |
11 | * version 2.1 of the License. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with this library; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
3fbec7dc | 23 | #define _LGPL_SOURCE |
97b58163 MD |
24 | #include "lttng-filter.h" |
25 | ||
26 | int lttng_filter_specialize_bytecode(struct bytecode_runtime *bytecode) | |
27 | { | |
28 | void *pc, *next_pc, *start_pc; | |
29 | int ret = -EINVAL; | |
0305960f MD |
30 | struct vstack _stack; |
31 | struct vstack *stack = &_stack; | |
97b58163 | 32 | |
0305960f | 33 | vstack_init(stack); |
97b58163 MD |
34 | |
35 | start_pc = &bytecode->data[0]; | |
36 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; | |
37 | pc = next_pc) { | |
38 | switch (*(filter_opcode_t *) pc) { | |
39 | case FILTER_OP_UNKNOWN: | |
40 | default: | |
41 | ERR("unknown bytecode op %u\n", | |
42 | (unsigned int) *(filter_opcode_t *) pc); | |
43 | ret = -EINVAL; | |
44 | goto end; | |
45 | ||
46 | case FILTER_OP_RETURN: | |
47 | ret = 0; | |
48 | goto end; | |
49 | ||
50 | /* binary */ | |
51 | case FILTER_OP_MUL: | |
52 | case FILTER_OP_DIV: | |
53 | case FILTER_OP_MOD: | |
54 | case FILTER_OP_PLUS: | |
55 | case FILTER_OP_MINUS: | |
56 | case FILTER_OP_RSHIFT: | |
57 | case FILTER_OP_LSHIFT: | |
58 | case FILTER_OP_BIN_AND: | |
59 | case FILTER_OP_BIN_OR: | |
60 | case FILTER_OP_BIN_XOR: | |
61 | ERR("unsupported bytecode op %u\n", | |
62 | (unsigned int) *(filter_opcode_t *) pc); | |
63 | ret = -EINVAL; | |
64 | goto end; | |
65 | ||
66 | case FILTER_OP_EQ: | |
67 | { | |
68 | struct binary_op *insn = (struct binary_op *) pc; | |
69 | ||
0305960f | 70 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
71 | default: |
72 | ERR("unknown register type\n"); | |
73 | ret = -EINVAL; | |
74 | goto end; | |
75 | ||
76 | case REG_STRING: | |
53569322 MD |
77 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
78 | break; | |
97b58163 MD |
79 | insn->op = FILTER_OP_EQ_STRING; |
80 | break; | |
81 | case REG_S64: | |
53569322 MD |
82 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
83 | break; | |
0305960f | 84 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
85 | insn->op = FILTER_OP_EQ_S64; |
86 | else | |
dbea82ec | 87 | insn->op = FILTER_OP_EQ_DOUBLE_S64; |
97b58163 MD |
88 | break; |
89 | case REG_DOUBLE: | |
53569322 MD |
90 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
91 | break; | |
dbea82ec MD |
92 | if (vstack_bx(stack)->type == REG_S64) |
93 | insn->op = FILTER_OP_EQ_S64_DOUBLE; | |
94 | else | |
95 | insn->op = FILTER_OP_EQ_DOUBLE; | |
97b58163 | 96 | break; |
53569322 MD |
97 | case REG_UNKNOWN: |
98 | break; /* Dynamic typing. */ | |
97b58163 | 99 | } |
0305960f MD |
100 | /* Pop 2, push 1 */ |
101 | if (vstack_pop(stack)) { | |
102 | ret = -EINVAL; | |
103 | goto end; | |
104 | } | |
105 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
106 | next_pc += sizeof(struct binary_op); |
107 | break; | |
108 | } | |
109 | ||
110 | case FILTER_OP_NE: | |
111 | { | |
112 | struct binary_op *insn = (struct binary_op *) pc; | |
113 | ||
0305960f | 114 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
115 | default: |
116 | ERR("unknown register type\n"); | |
117 | ret = -EINVAL; | |
118 | goto end; | |
119 | ||
120 | case REG_STRING: | |
53569322 MD |
121 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
122 | break; | |
97b58163 MD |
123 | insn->op = FILTER_OP_NE_STRING; |
124 | break; | |
125 | case REG_S64: | |
53569322 MD |
126 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
127 | break; | |
0305960f | 128 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
129 | insn->op = FILTER_OP_NE_S64; |
130 | else | |
dbea82ec | 131 | insn->op = FILTER_OP_NE_DOUBLE_S64; |
97b58163 MD |
132 | break; |
133 | case REG_DOUBLE: | |
53569322 MD |
134 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
135 | break; | |
dbea82ec MD |
136 | if (vstack_bx(stack)->type == REG_S64) |
137 | insn->op = FILTER_OP_NE_S64_DOUBLE; | |
138 | else | |
139 | insn->op = FILTER_OP_NE_DOUBLE; | |
97b58163 | 140 | break; |
53569322 MD |
141 | case REG_UNKNOWN: |
142 | break; /* Dynamic typing. */ | |
97b58163 | 143 | } |
0305960f MD |
144 | /* Pop 2, push 1 */ |
145 | if (vstack_pop(stack)) { | |
146 | ret = -EINVAL; | |
147 | goto end; | |
148 | } | |
149 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
150 | next_pc += sizeof(struct binary_op); |
151 | break; | |
152 | } | |
153 | ||
154 | case FILTER_OP_GT: | |
155 | { | |
156 | struct binary_op *insn = (struct binary_op *) pc; | |
157 | ||
0305960f | 158 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
159 | default: |
160 | ERR("unknown register type\n"); | |
161 | ret = -EINVAL; | |
162 | goto end; | |
163 | ||
164 | case REG_STRING: | |
53569322 MD |
165 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
166 | break; | |
97b58163 MD |
167 | insn->op = FILTER_OP_GT_STRING; |
168 | break; | |
169 | case REG_S64: | |
53569322 MD |
170 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
171 | break; | |
0305960f | 172 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
173 | insn->op = FILTER_OP_GT_S64; |
174 | else | |
dbea82ec | 175 | insn->op = FILTER_OP_GT_DOUBLE_S64; |
97b58163 MD |
176 | break; |
177 | case REG_DOUBLE: | |
53569322 MD |
178 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
179 | break; | |
dbea82ec MD |
180 | if (vstack_bx(stack)->type == REG_S64) |
181 | insn->op = FILTER_OP_GT_S64_DOUBLE; | |
182 | else | |
183 | insn->op = FILTER_OP_GT_DOUBLE; | |
97b58163 | 184 | break; |
53569322 MD |
185 | case REG_UNKNOWN: |
186 | break; /* Dynamic typing. */ | |
97b58163 | 187 | } |
0305960f MD |
188 | /* Pop 2, push 1 */ |
189 | if (vstack_pop(stack)) { | |
190 | ret = -EINVAL; | |
191 | goto end; | |
192 | } | |
193 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
194 | next_pc += sizeof(struct binary_op); |
195 | break; | |
196 | } | |
197 | ||
198 | case FILTER_OP_LT: | |
199 | { | |
200 | struct binary_op *insn = (struct binary_op *) pc; | |
201 | ||
0305960f | 202 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
203 | default: |
204 | ERR("unknown register type\n"); | |
205 | ret = -EINVAL; | |
206 | goto end; | |
207 | ||
208 | case REG_STRING: | |
53569322 MD |
209 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
210 | break; | |
97b58163 MD |
211 | insn->op = FILTER_OP_LT_STRING; |
212 | break; | |
213 | case REG_S64: | |
53569322 MD |
214 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
215 | break; | |
0305960f | 216 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
217 | insn->op = FILTER_OP_LT_S64; |
218 | else | |
dbea82ec | 219 | insn->op = FILTER_OP_LT_DOUBLE_S64; |
97b58163 MD |
220 | break; |
221 | case REG_DOUBLE: | |
53569322 MD |
222 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
223 | break; | |
dbea82ec MD |
224 | if (vstack_bx(stack)->type == REG_S64) |
225 | insn->op = FILTER_OP_LT_S64_DOUBLE; | |
226 | else | |
227 | insn->op = FILTER_OP_LT_DOUBLE; | |
97b58163 | 228 | break; |
53569322 MD |
229 | case REG_UNKNOWN: |
230 | break; /* Dynamic typing. */ | |
97b58163 | 231 | } |
0305960f MD |
232 | /* Pop 2, push 1 */ |
233 | if (vstack_pop(stack)) { | |
234 | ret = -EINVAL; | |
235 | goto end; | |
236 | } | |
237 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
238 | next_pc += sizeof(struct binary_op); |
239 | break; | |
240 | } | |
241 | ||
242 | case FILTER_OP_GE: | |
243 | { | |
244 | struct binary_op *insn = (struct binary_op *) pc; | |
245 | ||
0305960f | 246 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
247 | default: |
248 | ERR("unknown register type\n"); | |
249 | ret = -EINVAL; | |
250 | goto end; | |
251 | ||
252 | case REG_STRING: | |
53569322 MD |
253 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
254 | break; | |
97b58163 MD |
255 | insn->op = FILTER_OP_GE_STRING; |
256 | break; | |
257 | case REG_S64: | |
53569322 MD |
258 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
259 | break; | |
0305960f | 260 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
261 | insn->op = FILTER_OP_GE_S64; |
262 | else | |
dbea82ec | 263 | insn->op = FILTER_OP_GE_DOUBLE_S64; |
97b58163 MD |
264 | break; |
265 | case REG_DOUBLE: | |
53569322 MD |
266 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
267 | break; | |
dbea82ec MD |
268 | if (vstack_bx(stack)->type == REG_S64) |
269 | insn->op = FILTER_OP_GE_S64_DOUBLE; | |
270 | else | |
271 | insn->op = FILTER_OP_GE_DOUBLE; | |
97b58163 | 272 | break; |
53569322 MD |
273 | case REG_UNKNOWN: |
274 | break; /* Dynamic typing. */ | |
97b58163 | 275 | } |
0305960f MD |
276 | /* Pop 2, push 1 */ |
277 | if (vstack_pop(stack)) { | |
278 | ret = -EINVAL; | |
279 | goto end; | |
280 | } | |
281 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
282 | next_pc += sizeof(struct binary_op); |
283 | break; | |
284 | } | |
285 | case FILTER_OP_LE: | |
286 | { | |
287 | struct binary_op *insn = (struct binary_op *) pc; | |
288 | ||
0305960f | 289 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
290 | default: |
291 | ERR("unknown register type\n"); | |
292 | ret = -EINVAL; | |
293 | goto end; | |
294 | ||
295 | case REG_STRING: | |
53569322 MD |
296 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
297 | break; | |
97b58163 MD |
298 | insn->op = FILTER_OP_LE_STRING; |
299 | break; | |
300 | case REG_S64: | |
53569322 MD |
301 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
302 | break; | |
0305960f | 303 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
304 | insn->op = FILTER_OP_LE_S64; |
305 | else | |
dbea82ec | 306 | insn->op = FILTER_OP_LE_DOUBLE_S64; |
97b58163 MD |
307 | break; |
308 | case REG_DOUBLE: | |
53569322 MD |
309 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
310 | break; | |
dbea82ec MD |
311 | if (vstack_bx(stack)->type == REG_S64) |
312 | insn->op = FILTER_OP_LE_S64_DOUBLE; | |
313 | else | |
314 | insn->op = FILTER_OP_LE_DOUBLE; | |
97b58163 | 315 | break; |
53569322 MD |
316 | case REG_UNKNOWN: |
317 | break; /* Dynamic typing. */ | |
97b58163 | 318 | } |
0305960f | 319 | vstack_ax(stack)->type = REG_S64; |
97b58163 MD |
320 | next_pc += sizeof(struct binary_op); |
321 | break; | |
322 | } | |
323 | ||
324 | case FILTER_OP_EQ_STRING: | |
325 | case FILTER_OP_NE_STRING: | |
326 | case FILTER_OP_GT_STRING: | |
327 | case FILTER_OP_LT_STRING: | |
328 | case FILTER_OP_GE_STRING: | |
329 | case FILTER_OP_LE_STRING: | |
330 | case FILTER_OP_EQ_S64: | |
331 | case FILTER_OP_NE_S64: | |
332 | case FILTER_OP_GT_S64: | |
333 | case FILTER_OP_LT_S64: | |
334 | case FILTER_OP_GE_S64: | |
335 | case FILTER_OP_LE_S64: | |
336 | case FILTER_OP_EQ_DOUBLE: | |
337 | case FILTER_OP_NE_DOUBLE: | |
338 | case FILTER_OP_GT_DOUBLE: | |
339 | case FILTER_OP_LT_DOUBLE: | |
340 | case FILTER_OP_GE_DOUBLE: | |
341 | case FILTER_OP_LE_DOUBLE: | |
dbea82ec MD |
342 | case FILTER_OP_EQ_DOUBLE_S64: |
343 | case FILTER_OP_NE_DOUBLE_S64: | |
344 | case FILTER_OP_GT_DOUBLE_S64: | |
345 | case FILTER_OP_LT_DOUBLE_S64: | |
346 | case FILTER_OP_GE_DOUBLE_S64: | |
347 | case FILTER_OP_LE_DOUBLE_S64: | |
348 | case FILTER_OP_EQ_S64_DOUBLE: | |
349 | case FILTER_OP_NE_S64_DOUBLE: | |
350 | case FILTER_OP_GT_S64_DOUBLE: | |
351 | case FILTER_OP_LT_S64_DOUBLE: | |
352 | case FILTER_OP_GE_S64_DOUBLE: | |
353 | case FILTER_OP_LE_S64_DOUBLE: | |
97b58163 | 354 | { |
0305960f MD |
355 | /* Pop 2, push 1 */ |
356 | if (vstack_pop(stack)) { | |
357 | ret = -EINVAL; | |
358 | goto end; | |
359 | } | |
360 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
361 | next_pc += sizeof(struct binary_op); |
362 | break; | |
363 | } | |
364 | ||
365 | /* unary */ | |
366 | case FILTER_OP_UNARY_PLUS: | |
367 | { | |
368 | struct unary_op *insn = (struct unary_op *) pc; | |
369 | ||
0305960f | 370 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
371 | default: |
372 | ERR("unknown register type\n"); | |
373 | ret = -EINVAL; | |
374 | goto end; | |
375 | ||
376 | case REG_S64: | |
377 | insn->op = FILTER_OP_UNARY_PLUS_S64; | |
378 | break; | |
379 | case REG_DOUBLE: | |
380 | insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; | |
381 | break; | |
53569322 MD |
382 | case REG_UNKNOWN: /* Dynamic typing. */ |
383 | break; | |
97b58163 | 384 | } |
0305960f | 385 | /* Pop 1, push 1 */ |
97b58163 MD |
386 | next_pc += sizeof(struct unary_op); |
387 | break; | |
388 | } | |
389 | ||
390 | case FILTER_OP_UNARY_MINUS: | |
391 | { | |
392 | struct unary_op *insn = (struct unary_op *) pc; | |
393 | ||
0305960f | 394 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
395 | default: |
396 | ERR("unknown register type\n"); | |
397 | ret = -EINVAL; | |
398 | goto end; | |
399 | ||
400 | case REG_S64: | |
401 | insn->op = FILTER_OP_UNARY_MINUS_S64; | |
402 | break; | |
403 | case REG_DOUBLE: | |
404 | insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; | |
405 | break; | |
53569322 MD |
406 | case REG_UNKNOWN: /* Dynamic typing. */ |
407 | break; | |
97b58163 | 408 | } |
0305960f | 409 | /* Pop 1, push 1 */ |
97b58163 MD |
410 | next_pc += sizeof(struct unary_op); |
411 | break; | |
412 | } | |
413 | ||
414 | case FILTER_OP_UNARY_NOT: | |
415 | { | |
416 | struct unary_op *insn = (struct unary_op *) pc; | |
417 | ||
0305960f | 418 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
419 | default: |
420 | ERR("unknown register type\n"); | |
421 | ret = -EINVAL; | |
422 | goto end; | |
423 | ||
424 | case REG_S64: | |
425 | insn->op = FILTER_OP_UNARY_NOT_S64; | |
426 | break; | |
427 | case REG_DOUBLE: | |
428 | insn->op = FILTER_OP_UNARY_NOT_DOUBLE; | |
429 | break; | |
53569322 MD |
430 | case REG_UNKNOWN: /* Dynamic typing. */ |
431 | break; | |
97b58163 | 432 | } |
0305960f | 433 | /* Pop 1, push 1 */ |
97b58163 MD |
434 | next_pc += sizeof(struct unary_op); |
435 | break; | |
436 | } | |
437 | ||
438 | case FILTER_OP_UNARY_PLUS_S64: | |
439 | case FILTER_OP_UNARY_MINUS_S64: | |
440 | case FILTER_OP_UNARY_NOT_S64: | |
441 | case FILTER_OP_UNARY_PLUS_DOUBLE: | |
442 | case FILTER_OP_UNARY_MINUS_DOUBLE: | |
443 | case FILTER_OP_UNARY_NOT_DOUBLE: | |
444 | { | |
0305960f | 445 | /* Pop 1, push 1 */ |
97b58163 MD |
446 | next_pc += sizeof(struct unary_op); |
447 | break; | |
448 | } | |
449 | ||
450 | /* logical */ | |
451 | case FILTER_OP_AND: | |
452 | case FILTER_OP_OR: | |
453 | { | |
b9f4cd79 MD |
454 | /* Continue to next instruction */ |
455 | /* Pop 1 when jump not taken */ | |
456 | if (vstack_pop(stack)) { | |
457 | ret = -EINVAL; | |
458 | goto end; | |
459 | } | |
97b58163 MD |
460 | next_pc += sizeof(struct logical_op); |
461 | break; | |
462 | } | |
463 | ||
77aa5901 | 464 | /* load field ref */ |
97b58163 MD |
465 | case FILTER_OP_LOAD_FIELD_REF: |
466 | { | |
467 | ERR("Unknown field ref type\n"); | |
468 | ret = -EINVAL; | |
469 | goto end; | |
470 | } | |
77aa5901 MD |
471 | /* get context ref */ |
472 | case FILTER_OP_GET_CONTEXT_REF: | |
473 | { | |
53569322 MD |
474 | if (vstack_push(stack)) { |
475 | ret = -EINVAL; | |
476 | goto end; | |
477 | } | |
478 | vstack_ax(stack)->type = REG_UNKNOWN; | |
479 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
480 | break; | |
77aa5901 | 481 | } |
97b58163 MD |
482 | case FILTER_OP_LOAD_FIELD_REF_STRING: |
483 | case FILTER_OP_LOAD_FIELD_REF_SEQUENCE: | |
77aa5901 | 484 | case FILTER_OP_GET_CONTEXT_REF_STRING: |
97b58163 | 485 | { |
0305960f MD |
486 | if (vstack_push(stack)) { |
487 | ret = -EINVAL; | |
488 | goto end; | |
489 | } | |
490 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
491 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
492 | break; | |
493 | } | |
494 | case FILTER_OP_LOAD_FIELD_REF_S64: | |
77aa5901 | 495 | case FILTER_OP_GET_CONTEXT_REF_S64: |
97b58163 | 496 | { |
0305960f MD |
497 | if (vstack_push(stack)) { |
498 | ret = -EINVAL; | |
499 | goto end; | |
500 | } | |
501 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
502 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
503 | break; | |
504 | } | |
505 | case FILTER_OP_LOAD_FIELD_REF_DOUBLE: | |
77aa5901 | 506 | case FILTER_OP_GET_CONTEXT_REF_DOUBLE: |
97b58163 | 507 | { |
0305960f MD |
508 | if (vstack_push(stack)) { |
509 | ret = -EINVAL; | |
510 | goto end; | |
511 | } | |
512 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
513 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
514 | break; | |
515 | } | |
516 | ||
77aa5901 | 517 | /* load from immediate operand */ |
97b58163 MD |
518 | case FILTER_OP_LOAD_STRING: |
519 | { | |
520 | struct load_op *insn = (struct load_op *) pc; | |
521 | ||
0305960f MD |
522 | if (vstack_push(stack)) { |
523 | ret = -EINVAL; | |
524 | goto end; | |
525 | } | |
526 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
527 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
528 | break; | |
529 | } | |
530 | ||
531 | case FILTER_OP_LOAD_S64: | |
532 | { | |
0305960f MD |
533 | if (vstack_push(stack)) { |
534 | ret = -EINVAL; | |
535 | goto end; | |
536 | } | |
537 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
538 | next_pc += sizeof(struct load_op) |
539 | + sizeof(struct literal_numeric); | |
540 | break; | |
541 | } | |
542 | ||
543 | case FILTER_OP_LOAD_DOUBLE: | |
544 | { | |
0305960f MD |
545 | if (vstack_push(stack)) { |
546 | ret = -EINVAL; | |
547 | goto end; | |
548 | } | |
549 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
550 | next_pc += sizeof(struct load_op) |
551 | + sizeof(struct literal_double); | |
552 | break; | |
553 | } | |
554 | ||
555 | /* cast */ | |
556 | case FILTER_OP_CAST_TO_S64: | |
557 | { | |
558 | struct cast_op *insn = (struct cast_op *) pc; | |
559 | ||
0305960f | 560 | switch (vstack_ax(stack)->type) { |
97b58163 MD |
561 | default: |
562 | ERR("unknown register type\n"); | |
563 | ret = -EINVAL; | |
564 | goto end; | |
565 | ||
566 | case REG_STRING: | |
567 | ERR("Cast op can only be applied to numeric or floating point registers\n"); | |
568 | ret = -EINVAL; | |
569 | goto end; | |
570 | case REG_S64: | |
571 | insn->op = FILTER_OP_CAST_NOP; | |
572 | break; | |
573 | case REG_DOUBLE: | |
574 | insn->op = FILTER_OP_CAST_DOUBLE_TO_S64; | |
575 | break; | |
53569322 MD |
576 | case REG_UNKNOWN: |
577 | break; | |
97b58163 | 578 | } |
0305960f MD |
579 | /* Pop 1, push 1 */ |
580 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
581 | next_pc += sizeof(struct cast_op); |
582 | break; | |
583 | } | |
584 | case FILTER_OP_CAST_DOUBLE_TO_S64: | |
585 | { | |
0305960f MD |
586 | /* Pop 1, push 1 */ |
587 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
588 | next_pc += sizeof(struct cast_op); |
589 | break; | |
590 | } | |
591 | case FILTER_OP_CAST_NOP: | |
592 | { | |
593 | next_pc += sizeof(struct cast_op); | |
594 | break; | |
595 | } | |
596 | ||
97b58163 MD |
597 | } |
598 | } | |
599 | end: | |
600 | return ret; | |
601 | } |