Commit | Line | Data |
---|---|---|
97b58163 MD |
1 | /* |
2 | * lttng-filter-specialize.c | |
3 | * | |
4 | * LTTng UST filter code specializer. | |
5 | * | |
7e50015d | 6 | * Copyright (C) 2010-2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
97b58163 | 7 | * |
7e50015d MD |
8 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
9 | * of this software and associated documentation files (the "Software"), to deal | |
10 | * in the Software without restriction, including without limitation the rights | |
11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
12 | * copies of the Software, and to permit persons to whom the Software is | |
13 | * furnished to do so, subject to the following conditions: | |
97b58163 | 14 | * |
7e50015d MD |
15 | * The above copyright notice and this permission notice shall be included in |
16 | * all copies or substantial portions of the Software. | |
97b58163 | 17 | * |
7e50015d MD |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
24 | * SOFTWARE. | |
97b58163 MD |
25 | */ |
26 | ||
3fbec7dc | 27 | #define _LGPL_SOURCE |
97b58163 MD |
28 | #include "lttng-filter.h" |
29 | ||
30 | int lttng_filter_specialize_bytecode(struct bytecode_runtime *bytecode) | |
31 | { | |
32 | void *pc, *next_pc, *start_pc; | |
33 | int ret = -EINVAL; | |
0305960f MD |
34 | struct vstack _stack; |
35 | struct vstack *stack = &_stack; | |
97b58163 | 36 | |
0305960f | 37 | vstack_init(stack); |
97b58163 MD |
38 | |
39 | start_pc = &bytecode->data[0]; | |
40 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; | |
41 | pc = next_pc) { | |
42 | switch (*(filter_opcode_t *) pc) { | |
43 | case FILTER_OP_UNKNOWN: | |
44 | default: | |
45 | ERR("unknown bytecode op %u\n", | |
46 | (unsigned int) *(filter_opcode_t *) pc); | |
47 | ret = -EINVAL; | |
48 | goto end; | |
49 | ||
50 | case FILTER_OP_RETURN: | |
51 | ret = 0; | |
52 | goto end; | |
53 | ||
54 | /* binary */ | |
55 | case FILTER_OP_MUL: | |
56 | case FILTER_OP_DIV: | |
57 | case FILTER_OP_MOD: | |
58 | case FILTER_OP_PLUS: | |
59 | case FILTER_OP_MINUS: | |
60 | case FILTER_OP_RSHIFT: | |
61 | case FILTER_OP_LSHIFT: | |
62 | case FILTER_OP_BIN_AND: | |
63 | case FILTER_OP_BIN_OR: | |
64 | case FILTER_OP_BIN_XOR: | |
65 | ERR("unsupported bytecode op %u\n", | |
66 | (unsigned int) *(filter_opcode_t *) pc); | |
67 | ret = -EINVAL; | |
68 | goto end; | |
69 | ||
70 | case FILTER_OP_EQ: | |
71 | { | |
72 | struct binary_op *insn = (struct binary_op *) pc; | |
73 | ||
0305960f | 74 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
75 | default: |
76 | ERR("unknown register type\n"); | |
77 | ret = -EINVAL; | |
78 | goto end; | |
79 | ||
80 | case REG_STRING: | |
53569322 MD |
81 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
82 | break; | |
3151a51d PP |
83 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
84 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
85 | else | |
86 | insn->op = FILTER_OP_EQ_STRING; | |
87 | break; | |
88 | case REG_STAR_GLOB_STRING: | |
89 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
90 | break; | |
91 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
97b58163 MD |
92 | break; |
93 | case REG_S64: | |
53569322 MD |
94 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
95 | break; | |
0305960f | 96 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
97 | insn->op = FILTER_OP_EQ_S64; |
98 | else | |
dbea82ec | 99 | insn->op = FILTER_OP_EQ_DOUBLE_S64; |
97b58163 MD |
100 | break; |
101 | case REG_DOUBLE: | |
53569322 MD |
102 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
103 | break; | |
dbea82ec MD |
104 | if (vstack_bx(stack)->type == REG_S64) |
105 | insn->op = FILTER_OP_EQ_S64_DOUBLE; | |
106 | else | |
107 | insn->op = FILTER_OP_EQ_DOUBLE; | |
97b58163 | 108 | break; |
53569322 MD |
109 | case REG_UNKNOWN: |
110 | break; /* Dynamic typing. */ | |
97b58163 | 111 | } |
0305960f MD |
112 | /* Pop 2, push 1 */ |
113 | if (vstack_pop(stack)) { | |
114 | ret = -EINVAL; | |
115 | goto end; | |
116 | } | |
117 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
118 | next_pc += sizeof(struct binary_op); |
119 | break; | |
120 | } | |
121 | ||
122 | case FILTER_OP_NE: | |
123 | { | |
124 | struct binary_op *insn = (struct binary_op *) pc; | |
125 | ||
0305960f | 126 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
127 | default: |
128 | ERR("unknown register type\n"); | |
129 | ret = -EINVAL; | |
130 | goto end; | |
131 | ||
132 | case REG_STRING: | |
53569322 MD |
133 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
134 | break; | |
3151a51d PP |
135 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
136 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
137 | else | |
138 | insn->op = FILTER_OP_NE_STRING; | |
139 | break; | |
140 | case REG_STAR_GLOB_STRING: | |
141 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
142 | break; | |
143 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
97b58163 MD |
144 | break; |
145 | case REG_S64: | |
53569322 MD |
146 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
147 | break; | |
0305960f | 148 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
149 | insn->op = FILTER_OP_NE_S64; |
150 | else | |
dbea82ec | 151 | insn->op = FILTER_OP_NE_DOUBLE_S64; |
97b58163 MD |
152 | break; |
153 | case REG_DOUBLE: | |
53569322 MD |
154 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
155 | break; | |
dbea82ec MD |
156 | if (vstack_bx(stack)->type == REG_S64) |
157 | insn->op = FILTER_OP_NE_S64_DOUBLE; | |
158 | else | |
159 | insn->op = FILTER_OP_NE_DOUBLE; | |
97b58163 | 160 | break; |
53569322 MD |
161 | case REG_UNKNOWN: |
162 | break; /* Dynamic typing. */ | |
97b58163 | 163 | } |
0305960f MD |
164 | /* Pop 2, push 1 */ |
165 | if (vstack_pop(stack)) { | |
166 | ret = -EINVAL; | |
167 | goto end; | |
168 | } | |
169 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
170 | next_pc += sizeof(struct binary_op); |
171 | break; | |
172 | } | |
173 | ||
174 | case FILTER_OP_GT: | |
175 | { | |
176 | struct binary_op *insn = (struct binary_op *) pc; | |
177 | ||
0305960f | 178 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
179 | default: |
180 | ERR("unknown register type\n"); | |
181 | ret = -EINVAL; | |
182 | goto end; | |
183 | ||
3151a51d PP |
184 | case REG_STAR_GLOB_STRING: |
185 | ERR("invalid register type for > binary operator\n"); | |
186 | ret = -EINVAL; | |
187 | goto end; | |
97b58163 | 188 | case REG_STRING: |
53569322 MD |
189 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
190 | break; | |
97b58163 MD |
191 | insn->op = FILTER_OP_GT_STRING; |
192 | break; | |
193 | case REG_S64: | |
53569322 MD |
194 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
195 | break; | |
0305960f | 196 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
197 | insn->op = FILTER_OP_GT_S64; |
198 | else | |
dbea82ec | 199 | insn->op = FILTER_OP_GT_DOUBLE_S64; |
97b58163 MD |
200 | break; |
201 | case REG_DOUBLE: | |
53569322 MD |
202 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
203 | break; | |
dbea82ec MD |
204 | if (vstack_bx(stack)->type == REG_S64) |
205 | insn->op = FILTER_OP_GT_S64_DOUBLE; | |
206 | else | |
207 | insn->op = FILTER_OP_GT_DOUBLE; | |
97b58163 | 208 | break; |
53569322 MD |
209 | case REG_UNKNOWN: |
210 | break; /* Dynamic typing. */ | |
97b58163 | 211 | } |
0305960f MD |
212 | /* Pop 2, push 1 */ |
213 | if (vstack_pop(stack)) { | |
214 | ret = -EINVAL; | |
215 | goto end; | |
216 | } | |
217 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
218 | next_pc += sizeof(struct binary_op); |
219 | break; | |
220 | } | |
221 | ||
222 | case FILTER_OP_LT: | |
223 | { | |
224 | struct binary_op *insn = (struct binary_op *) pc; | |
225 | ||
0305960f | 226 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
227 | default: |
228 | ERR("unknown register type\n"); | |
229 | ret = -EINVAL; | |
230 | goto end; | |
231 | ||
3151a51d PP |
232 | case REG_STAR_GLOB_STRING: |
233 | ERR("invalid register type for < binary operator\n"); | |
234 | ret = -EINVAL; | |
235 | goto end; | |
97b58163 | 236 | case REG_STRING: |
53569322 MD |
237 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
238 | break; | |
97b58163 MD |
239 | insn->op = FILTER_OP_LT_STRING; |
240 | break; | |
241 | case REG_S64: | |
53569322 MD |
242 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
243 | break; | |
0305960f | 244 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
245 | insn->op = FILTER_OP_LT_S64; |
246 | else | |
dbea82ec | 247 | insn->op = FILTER_OP_LT_DOUBLE_S64; |
97b58163 MD |
248 | break; |
249 | case REG_DOUBLE: | |
53569322 MD |
250 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
251 | break; | |
dbea82ec MD |
252 | if (vstack_bx(stack)->type == REG_S64) |
253 | insn->op = FILTER_OP_LT_S64_DOUBLE; | |
254 | else | |
255 | insn->op = FILTER_OP_LT_DOUBLE; | |
97b58163 | 256 | break; |
53569322 MD |
257 | case REG_UNKNOWN: |
258 | break; /* Dynamic typing. */ | |
97b58163 | 259 | } |
0305960f MD |
260 | /* Pop 2, push 1 */ |
261 | if (vstack_pop(stack)) { | |
262 | ret = -EINVAL; | |
263 | goto end; | |
264 | } | |
265 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
266 | next_pc += sizeof(struct binary_op); |
267 | break; | |
268 | } | |
269 | ||
270 | case FILTER_OP_GE: | |
271 | { | |
272 | struct binary_op *insn = (struct binary_op *) pc; | |
273 | ||
0305960f | 274 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
275 | default: |
276 | ERR("unknown register type\n"); | |
277 | ret = -EINVAL; | |
278 | goto end; | |
279 | ||
3151a51d PP |
280 | case REG_STAR_GLOB_STRING: |
281 | ERR("invalid register type for >= binary operator\n"); | |
282 | ret = -EINVAL; | |
283 | goto end; | |
97b58163 | 284 | case REG_STRING: |
53569322 MD |
285 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
286 | break; | |
97b58163 MD |
287 | insn->op = FILTER_OP_GE_STRING; |
288 | break; | |
289 | case REG_S64: | |
53569322 MD |
290 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
291 | break; | |
0305960f | 292 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
293 | insn->op = FILTER_OP_GE_S64; |
294 | else | |
dbea82ec | 295 | insn->op = FILTER_OP_GE_DOUBLE_S64; |
97b58163 MD |
296 | break; |
297 | case REG_DOUBLE: | |
53569322 MD |
298 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
299 | break; | |
dbea82ec MD |
300 | if (vstack_bx(stack)->type == REG_S64) |
301 | insn->op = FILTER_OP_GE_S64_DOUBLE; | |
302 | else | |
303 | insn->op = FILTER_OP_GE_DOUBLE; | |
97b58163 | 304 | break; |
53569322 MD |
305 | case REG_UNKNOWN: |
306 | break; /* Dynamic typing. */ | |
97b58163 | 307 | } |
0305960f MD |
308 | /* Pop 2, push 1 */ |
309 | if (vstack_pop(stack)) { | |
310 | ret = -EINVAL; | |
311 | goto end; | |
312 | } | |
313 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
314 | next_pc += sizeof(struct binary_op); |
315 | break; | |
316 | } | |
317 | case FILTER_OP_LE: | |
318 | { | |
319 | struct binary_op *insn = (struct binary_op *) pc; | |
320 | ||
0305960f | 321 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
322 | default: |
323 | ERR("unknown register type\n"); | |
324 | ret = -EINVAL; | |
325 | goto end; | |
326 | ||
3151a51d PP |
327 | case REG_STAR_GLOB_STRING: |
328 | ERR("invalid register type for <= binary operator\n"); | |
329 | ret = -EINVAL; | |
330 | goto end; | |
97b58163 | 331 | case REG_STRING: |
53569322 MD |
332 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
333 | break; | |
97b58163 MD |
334 | insn->op = FILTER_OP_LE_STRING; |
335 | break; | |
336 | case REG_S64: | |
53569322 MD |
337 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
338 | break; | |
0305960f | 339 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
340 | insn->op = FILTER_OP_LE_S64; |
341 | else | |
dbea82ec | 342 | insn->op = FILTER_OP_LE_DOUBLE_S64; |
97b58163 MD |
343 | break; |
344 | case REG_DOUBLE: | |
53569322 MD |
345 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
346 | break; | |
dbea82ec MD |
347 | if (vstack_bx(stack)->type == REG_S64) |
348 | insn->op = FILTER_OP_LE_S64_DOUBLE; | |
349 | else | |
350 | insn->op = FILTER_OP_LE_DOUBLE; | |
97b58163 | 351 | break; |
53569322 MD |
352 | case REG_UNKNOWN: |
353 | break; /* Dynamic typing. */ | |
97b58163 | 354 | } |
0305960f | 355 | vstack_ax(stack)->type = REG_S64; |
97b58163 MD |
356 | next_pc += sizeof(struct binary_op); |
357 | break; | |
358 | } | |
359 | ||
360 | case FILTER_OP_EQ_STRING: | |
361 | case FILTER_OP_NE_STRING: | |
362 | case FILTER_OP_GT_STRING: | |
363 | case FILTER_OP_LT_STRING: | |
364 | case FILTER_OP_GE_STRING: | |
365 | case FILTER_OP_LE_STRING: | |
3151a51d PP |
366 | case FILTER_OP_EQ_STAR_GLOB_STRING: |
367 | case FILTER_OP_NE_STAR_GLOB_STRING: | |
97b58163 MD |
368 | case FILTER_OP_EQ_S64: |
369 | case FILTER_OP_NE_S64: | |
370 | case FILTER_OP_GT_S64: | |
371 | case FILTER_OP_LT_S64: | |
372 | case FILTER_OP_GE_S64: | |
373 | case FILTER_OP_LE_S64: | |
374 | case FILTER_OP_EQ_DOUBLE: | |
375 | case FILTER_OP_NE_DOUBLE: | |
376 | case FILTER_OP_GT_DOUBLE: | |
377 | case FILTER_OP_LT_DOUBLE: | |
378 | case FILTER_OP_GE_DOUBLE: | |
379 | case FILTER_OP_LE_DOUBLE: | |
dbea82ec MD |
380 | case FILTER_OP_EQ_DOUBLE_S64: |
381 | case FILTER_OP_NE_DOUBLE_S64: | |
382 | case FILTER_OP_GT_DOUBLE_S64: | |
383 | case FILTER_OP_LT_DOUBLE_S64: | |
384 | case FILTER_OP_GE_DOUBLE_S64: | |
385 | case FILTER_OP_LE_DOUBLE_S64: | |
386 | case FILTER_OP_EQ_S64_DOUBLE: | |
387 | case FILTER_OP_NE_S64_DOUBLE: | |
388 | case FILTER_OP_GT_S64_DOUBLE: | |
389 | case FILTER_OP_LT_S64_DOUBLE: | |
390 | case FILTER_OP_GE_S64_DOUBLE: | |
391 | case FILTER_OP_LE_S64_DOUBLE: | |
97b58163 | 392 | { |
0305960f MD |
393 | /* Pop 2, push 1 */ |
394 | if (vstack_pop(stack)) { | |
395 | ret = -EINVAL; | |
396 | goto end; | |
397 | } | |
398 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
399 | next_pc += sizeof(struct binary_op); |
400 | break; | |
401 | } | |
402 | ||
403 | /* unary */ | |
404 | case FILTER_OP_UNARY_PLUS: | |
405 | { | |
406 | struct unary_op *insn = (struct unary_op *) pc; | |
407 | ||
0305960f | 408 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
409 | default: |
410 | ERR("unknown register type\n"); | |
411 | ret = -EINVAL; | |
412 | goto end; | |
413 | ||
414 | case REG_S64: | |
415 | insn->op = FILTER_OP_UNARY_PLUS_S64; | |
416 | break; | |
417 | case REG_DOUBLE: | |
418 | insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; | |
419 | break; | |
53569322 MD |
420 | case REG_UNKNOWN: /* Dynamic typing. */ |
421 | break; | |
97b58163 | 422 | } |
0305960f | 423 | /* Pop 1, push 1 */ |
97b58163 MD |
424 | next_pc += sizeof(struct unary_op); |
425 | break; | |
426 | } | |
427 | ||
428 | case FILTER_OP_UNARY_MINUS: | |
429 | { | |
430 | struct unary_op *insn = (struct unary_op *) pc; | |
431 | ||
0305960f | 432 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
433 | default: |
434 | ERR("unknown register type\n"); | |
435 | ret = -EINVAL; | |
436 | goto end; | |
437 | ||
438 | case REG_S64: | |
439 | insn->op = FILTER_OP_UNARY_MINUS_S64; | |
440 | break; | |
441 | case REG_DOUBLE: | |
442 | insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; | |
443 | break; | |
53569322 MD |
444 | case REG_UNKNOWN: /* Dynamic typing. */ |
445 | break; | |
97b58163 | 446 | } |
0305960f | 447 | /* Pop 1, push 1 */ |
97b58163 MD |
448 | next_pc += sizeof(struct unary_op); |
449 | break; | |
450 | } | |
451 | ||
452 | case FILTER_OP_UNARY_NOT: | |
453 | { | |
454 | struct unary_op *insn = (struct unary_op *) pc; | |
455 | ||
0305960f | 456 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
457 | default: |
458 | ERR("unknown register type\n"); | |
459 | ret = -EINVAL; | |
460 | goto end; | |
461 | ||
462 | case REG_S64: | |
463 | insn->op = FILTER_OP_UNARY_NOT_S64; | |
464 | break; | |
465 | case REG_DOUBLE: | |
466 | insn->op = FILTER_OP_UNARY_NOT_DOUBLE; | |
467 | break; | |
53569322 MD |
468 | case REG_UNKNOWN: /* Dynamic typing. */ |
469 | break; | |
97b58163 | 470 | } |
0305960f | 471 | /* Pop 1, push 1 */ |
97b58163 MD |
472 | next_pc += sizeof(struct unary_op); |
473 | break; | |
474 | } | |
475 | ||
476 | case FILTER_OP_UNARY_PLUS_S64: | |
477 | case FILTER_OP_UNARY_MINUS_S64: | |
478 | case FILTER_OP_UNARY_NOT_S64: | |
479 | case FILTER_OP_UNARY_PLUS_DOUBLE: | |
480 | case FILTER_OP_UNARY_MINUS_DOUBLE: | |
481 | case FILTER_OP_UNARY_NOT_DOUBLE: | |
482 | { | |
0305960f | 483 | /* Pop 1, push 1 */ |
97b58163 MD |
484 | next_pc += sizeof(struct unary_op); |
485 | break; | |
486 | } | |
487 | ||
488 | /* logical */ | |
489 | case FILTER_OP_AND: | |
490 | case FILTER_OP_OR: | |
491 | { | |
b9f4cd79 MD |
492 | /* Continue to next instruction */ |
493 | /* Pop 1 when jump not taken */ | |
494 | if (vstack_pop(stack)) { | |
495 | ret = -EINVAL; | |
496 | goto end; | |
497 | } | |
97b58163 MD |
498 | next_pc += sizeof(struct logical_op); |
499 | break; | |
500 | } | |
501 | ||
77aa5901 | 502 | /* load field ref */ |
97b58163 MD |
503 | case FILTER_OP_LOAD_FIELD_REF: |
504 | { | |
505 | ERR("Unknown field ref type\n"); | |
506 | ret = -EINVAL; | |
507 | goto end; | |
508 | } | |
77aa5901 MD |
509 | /* get context ref */ |
510 | case FILTER_OP_GET_CONTEXT_REF: | |
511 | { | |
53569322 MD |
512 | if (vstack_push(stack)) { |
513 | ret = -EINVAL; | |
514 | goto end; | |
515 | } | |
516 | vstack_ax(stack)->type = REG_UNKNOWN; | |
517 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
518 | break; | |
77aa5901 | 519 | } |
97b58163 MD |
520 | case FILTER_OP_LOAD_FIELD_REF_STRING: |
521 | case FILTER_OP_LOAD_FIELD_REF_SEQUENCE: | |
77aa5901 | 522 | case FILTER_OP_GET_CONTEXT_REF_STRING: |
97b58163 | 523 | { |
0305960f MD |
524 | if (vstack_push(stack)) { |
525 | ret = -EINVAL; | |
526 | goto end; | |
527 | } | |
528 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
529 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
530 | break; | |
531 | } | |
532 | case FILTER_OP_LOAD_FIELD_REF_S64: | |
77aa5901 | 533 | case FILTER_OP_GET_CONTEXT_REF_S64: |
97b58163 | 534 | { |
0305960f MD |
535 | if (vstack_push(stack)) { |
536 | ret = -EINVAL; | |
537 | goto end; | |
538 | } | |
539 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
540 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
541 | break; | |
542 | } | |
543 | case FILTER_OP_LOAD_FIELD_REF_DOUBLE: | |
77aa5901 | 544 | case FILTER_OP_GET_CONTEXT_REF_DOUBLE: |
97b58163 | 545 | { |
0305960f MD |
546 | if (vstack_push(stack)) { |
547 | ret = -EINVAL; | |
548 | goto end; | |
549 | } | |
550 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
551 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
552 | break; | |
553 | } | |
554 | ||
77aa5901 | 555 | /* load from immediate operand */ |
97b58163 MD |
556 | case FILTER_OP_LOAD_STRING: |
557 | { | |
558 | struct load_op *insn = (struct load_op *) pc; | |
559 | ||
0305960f MD |
560 | if (vstack_push(stack)) { |
561 | ret = -EINVAL; | |
562 | goto end; | |
563 | } | |
564 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
565 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
566 | break; | |
567 | } | |
568 | ||
3151a51d PP |
569 | case FILTER_OP_LOAD_STAR_GLOB_STRING: |
570 | { | |
571 | struct load_op *insn = (struct load_op *) pc; | |
572 | ||
573 | if (vstack_push(stack)) { | |
574 | ret = -EINVAL; | |
575 | goto end; | |
576 | } | |
577 | vstack_ax(stack)->type = REG_STAR_GLOB_STRING; | |
578 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
579 | break; | |
580 | } | |
581 | ||
97b58163 MD |
582 | case FILTER_OP_LOAD_S64: |
583 | { | |
0305960f MD |
584 | if (vstack_push(stack)) { |
585 | ret = -EINVAL; | |
586 | goto end; | |
587 | } | |
588 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
589 | next_pc += sizeof(struct load_op) |
590 | + sizeof(struct literal_numeric); | |
591 | break; | |
592 | } | |
593 | ||
594 | case FILTER_OP_LOAD_DOUBLE: | |
595 | { | |
0305960f MD |
596 | if (vstack_push(stack)) { |
597 | ret = -EINVAL; | |
598 | goto end; | |
599 | } | |
600 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
601 | next_pc += sizeof(struct load_op) |
602 | + sizeof(struct literal_double); | |
603 | break; | |
604 | } | |
605 | ||
606 | /* cast */ | |
607 | case FILTER_OP_CAST_TO_S64: | |
608 | { | |
609 | struct cast_op *insn = (struct cast_op *) pc; | |
610 | ||
0305960f | 611 | switch (vstack_ax(stack)->type) { |
97b58163 MD |
612 | default: |
613 | ERR("unknown register type\n"); | |
614 | ret = -EINVAL; | |
615 | goto end; | |
616 | ||
617 | case REG_STRING: | |
3151a51d | 618 | case REG_STAR_GLOB_STRING: |
97b58163 MD |
619 | ERR("Cast op can only be applied to numeric or floating point registers\n"); |
620 | ret = -EINVAL; | |
621 | goto end; | |
622 | case REG_S64: | |
623 | insn->op = FILTER_OP_CAST_NOP; | |
624 | break; | |
625 | case REG_DOUBLE: | |
626 | insn->op = FILTER_OP_CAST_DOUBLE_TO_S64; | |
627 | break; | |
53569322 MD |
628 | case REG_UNKNOWN: |
629 | break; | |
97b58163 | 630 | } |
0305960f MD |
631 | /* Pop 1, push 1 */ |
632 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
633 | next_pc += sizeof(struct cast_op); |
634 | break; | |
635 | } | |
636 | case FILTER_OP_CAST_DOUBLE_TO_S64: | |
637 | { | |
0305960f MD |
638 | /* Pop 1, push 1 */ |
639 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
640 | next_pc += sizeof(struct cast_op); |
641 | break; | |
642 | } | |
643 | case FILTER_OP_CAST_NOP: | |
644 | { | |
645 | next_pc += sizeof(struct cast_op); | |
646 | break; | |
647 | } | |
648 | ||
97b58163 MD |
649 | } |
650 | } | |
651 | end: | |
652 | return ret; | |
653 | } |