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; | |
97b58163 MD |
83 | insn->op = FILTER_OP_EQ_STRING; |
84 | break; | |
85 | case REG_S64: | |
53569322 MD |
86 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
87 | break; | |
0305960f | 88 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
89 | insn->op = FILTER_OP_EQ_S64; |
90 | else | |
dbea82ec | 91 | insn->op = FILTER_OP_EQ_DOUBLE_S64; |
97b58163 MD |
92 | break; |
93 | case REG_DOUBLE: | |
53569322 MD |
94 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
95 | break; | |
dbea82ec MD |
96 | if (vstack_bx(stack)->type == REG_S64) |
97 | insn->op = FILTER_OP_EQ_S64_DOUBLE; | |
98 | else | |
99 | insn->op = FILTER_OP_EQ_DOUBLE; | |
97b58163 | 100 | break; |
53569322 MD |
101 | case REG_UNKNOWN: |
102 | break; /* Dynamic typing. */ | |
97b58163 | 103 | } |
0305960f MD |
104 | /* Pop 2, push 1 */ |
105 | if (vstack_pop(stack)) { | |
106 | ret = -EINVAL; | |
107 | goto end; | |
108 | } | |
109 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
110 | next_pc += sizeof(struct binary_op); |
111 | break; | |
112 | } | |
113 | ||
114 | case FILTER_OP_NE: | |
115 | { | |
116 | struct binary_op *insn = (struct binary_op *) pc; | |
117 | ||
0305960f | 118 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
119 | default: |
120 | ERR("unknown register type\n"); | |
121 | ret = -EINVAL; | |
122 | goto end; | |
123 | ||
124 | case REG_STRING: | |
53569322 MD |
125 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
126 | break; | |
97b58163 MD |
127 | insn->op = FILTER_OP_NE_STRING; |
128 | break; | |
129 | case REG_S64: | |
53569322 MD |
130 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
131 | break; | |
0305960f | 132 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
133 | insn->op = FILTER_OP_NE_S64; |
134 | else | |
dbea82ec | 135 | insn->op = FILTER_OP_NE_DOUBLE_S64; |
97b58163 MD |
136 | break; |
137 | case REG_DOUBLE: | |
53569322 MD |
138 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
139 | break; | |
dbea82ec MD |
140 | if (vstack_bx(stack)->type == REG_S64) |
141 | insn->op = FILTER_OP_NE_S64_DOUBLE; | |
142 | else | |
143 | insn->op = FILTER_OP_NE_DOUBLE; | |
97b58163 | 144 | break; |
53569322 MD |
145 | case REG_UNKNOWN: |
146 | break; /* Dynamic typing. */ | |
97b58163 | 147 | } |
0305960f MD |
148 | /* Pop 2, push 1 */ |
149 | if (vstack_pop(stack)) { | |
150 | ret = -EINVAL; | |
151 | goto end; | |
152 | } | |
153 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
154 | next_pc += sizeof(struct binary_op); |
155 | break; | |
156 | } | |
157 | ||
158 | case FILTER_OP_GT: | |
159 | { | |
160 | struct binary_op *insn = (struct binary_op *) pc; | |
161 | ||
0305960f | 162 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
163 | default: |
164 | ERR("unknown register type\n"); | |
165 | ret = -EINVAL; | |
166 | goto end; | |
167 | ||
168 | case REG_STRING: | |
53569322 MD |
169 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
170 | break; | |
97b58163 MD |
171 | insn->op = FILTER_OP_GT_STRING; |
172 | break; | |
173 | case REG_S64: | |
53569322 MD |
174 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
175 | break; | |
0305960f | 176 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
177 | insn->op = FILTER_OP_GT_S64; |
178 | else | |
dbea82ec | 179 | insn->op = FILTER_OP_GT_DOUBLE_S64; |
97b58163 MD |
180 | break; |
181 | case REG_DOUBLE: | |
53569322 MD |
182 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
183 | break; | |
dbea82ec MD |
184 | if (vstack_bx(stack)->type == REG_S64) |
185 | insn->op = FILTER_OP_GT_S64_DOUBLE; | |
186 | else | |
187 | insn->op = FILTER_OP_GT_DOUBLE; | |
97b58163 | 188 | break; |
53569322 MD |
189 | case REG_UNKNOWN: |
190 | break; /* Dynamic typing. */ | |
97b58163 | 191 | } |
0305960f MD |
192 | /* Pop 2, push 1 */ |
193 | if (vstack_pop(stack)) { | |
194 | ret = -EINVAL; | |
195 | goto end; | |
196 | } | |
197 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
198 | next_pc += sizeof(struct binary_op); |
199 | break; | |
200 | } | |
201 | ||
202 | case FILTER_OP_LT: | |
203 | { | |
204 | struct binary_op *insn = (struct binary_op *) pc; | |
205 | ||
0305960f | 206 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
207 | default: |
208 | ERR("unknown register type\n"); | |
209 | ret = -EINVAL; | |
210 | goto end; | |
211 | ||
212 | case REG_STRING: | |
53569322 MD |
213 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
214 | break; | |
97b58163 MD |
215 | insn->op = FILTER_OP_LT_STRING; |
216 | break; | |
217 | case REG_S64: | |
53569322 MD |
218 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
219 | break; | |
0305960f | 220 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
221 | insn->op = FILTER_OP_LT_S64; |
222 | else | |
dbea82ec | 223 | insn->op = FILTER_OP_LT_DOUBLE_S64; |
97b58163 MD |
224 | break; |
225 | case REG_DOUBLE: | |
53569322 MD |
226 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
227 | break; | |
dbea82ec MD |
228 | if (vstack_bx(stack)->type == REG_S64) |
229 | insn->op = FILTER_OP_LT_S64_DOUBLE; | |
230 | else | |
231 | insn->op = FILTER_OP_LT_DOUBLE; | |
97b58163 | 232 | break; |
53569322 MD |
233 | case REG_UNKNOWN: |
234 | break; /* Dynamic typing. */ | |
97b58163 | 235 | } |
0305960f MD |
236 | /* Pop 2, push 1 */ |
237 | if (vstack_pop(stack)) { | |
238 | ret = -EINVAL; | |
239 | goto end; | |
240 | } | |
241 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
242 | next_pc += sizeof(struct binary_op); |
243 | break; | |
244 | } | |
245 | ||
246 | case FILTER_OP_GE: | |
247 | { | |
248 | struct binary_op *insn = (struct binary_op *) pc; | |
249 | ||
0305960f | 250 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
251 | default: |
252 | ERR("unknown register type\n"); | |
253 | ret = -EINVAL; | |
254 | goto end; | |
255 | ||
256 | case REG_STRING: | |
53569322 MD |
257 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
258 | break; | |
97b58163 MD |
259 | insn->op = FILTER_OP_GE_STRING; |
260 | break; | |
261 | case REG_S64: | |
53569322 MD |
262 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
263 | break; | |
0305960f | 264 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
265 | insn->op = FILTER_OP_GE_S64; |
266 | else | |
dbea82ec | 267 | insn->op = FILTER_OP_GE_DOUBLE_S64; |
97b58163 MD |
268 | break; |
269 | case REG_DOUBLE: | |
53569322 MD |
270 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
271 | break; | |
dbea82ec MD |
272 | if (vstack_bx(stack)->type == REG_S64) |
273 | insn->op = FILTER_OP_GE_S64_DOUBLE; | |
274 | else | |
275 | insn->op = FILTER_OP_GE_DOUBLE; | |
97b58163 | 276 | break; |
53569322 MD |
277 | case REG_UNKNOWN: |
278 | break; /* Dynamic typing. */ | |
97b58163 | 279 | } |
0305960f MD |
280 | /* Pop 2, push 1 */ |
281 | if (vstack_pop(stack)) { | |
282 | ret = -EINVAL; | |
283 | goto end; | |
284 | } | |
285 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
286 | next_pc += sizeof(struct binary_op); |
287 | break; | |
288 | } | |
289 | case FILTER_OP_LE: | |
290 | { | |
291 | struct binary_op *insn = (struct binary_op *) pc; | |
292 | ||
0305960f | 293 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
294 | default: |
295 | ERR("unknown register type\n"); | |
296 | ret = -EINVAL; | |
297 | goto end; | |
298 | ||
299 | case REG_STRING: | |
53569322 MD |
300 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
301 | break; | |
97b58163 MD |
302 | insn->op = FILTER_OP_LE_STRING; |
303 | break; | |
304 | case REG_S64: | |
53569322 MD |
305 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
306 | break; | |
0305960f | 307 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
308 | insn->op = FILTER_OP_LE_S64; |
309 | else | |
dbea82ec | 310 | insn->op = FILTER_OP_LE_DOUBLE_S64; |
97b58163 MD |
311 | break; |
312 | case REG_DOUBLE: | |
53569322 MD |
313 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
314 | break; | |
dbea82ec MD |
315 | if (vstack_bx(stack)->type == REG_S64) |
316 | insn->op = FILTER_OP_LE_S64_DOUBLE; | |
317 | else | |
318 | insn->op = FILTER_OP_LE_DOUBLE; | |
97b58163 | 319 | break; |
53569322 MD |
320 | case REG_UNKNOWN: |
321 | break; /* Dynamic typing. */ | |
97b58163 | 322 | } |
0305960f | 323 | vstack_ax(stack)->type = REG_S64; |
97b58163 MD |
324 | next_pc += sizeof(struct binary_op); |
325 | break; | |
326 | } | |
327 | ||
328 | case FILTER_OP_EQ_STRING: | |
329 | case FILTER_OP_NE_STRING: | |
330 | case FILTER_OP_GT_STRING: | |
331 | case FILTER_OP_LT_STRING: | |
332 | case FILTER_OP_GE_STRING: | |
333 | case FILTER_OP_LE_STRING: | |
334 | case FILTER_OP_EQ_S64: | |
335 | case FILTER_OP_NE_S64: | |
336 | case FILTER_OP_GT_S64: | |
337 | case FILTER_OP_LT_S64: | |
338 | case FILTER_OP_GE_S64: | |
339 | case FILTER_OP_LE_S64: | |
340 | case FILTER_OP_EQ_DOUBLE: | |
341 | case FILTER_OP_NE_DOUBLE: | |
342 | case FILTER_OP_GT_DOUBLE: | |
343 | case FILTER_OP_LT_DOUBLE: | |
344 | case FILTER_OP_GE_DOUBLE: | |
345 | case FILTER_OP_LE_DOUBLE: | |
dbea82ec MD |
346 | case FILTER_OP_EQ_DOUBLE_S64: |
347 | case FILTER_OP_NE_DOUBLE_S64: | |
348 | case FILTER_OP_GT_DOUBLE_S64: | |
349 | case FILTER_OP_LT_DOUBLE_S64: | |
350 | case FILTER_OP_GE_DOUBLE_S64: | |
351 | case FILTER_OP_LE_DOUBLE_S64: | |
352 | case FILTER_OP_EQ_S64_DOUBLE: | |
353 | case FILTER_OP_NE_S64_DOUBLE: | |
354 | case FILTER_OP_GT_S64_DOUBLE: | |
355 | case FILTER_OP_LT_S64_DOUBLE: | |
356 | case FILTER_OP_GE_S64_DOUBLE: | |
357 | case FILTER_OP_LE_S64_DOUBLE: | |
97b58163 | 358 | { |
0305960f MD |
359 | /* Pop 2, push 1 */ |
360 | if (vstack_pop(stack)) { | |
361 | ret = -EINVAL; | |
362 | goto end; | |
363 | } | |
364 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
365 | next_pc += sizeof(struct binary_op); |
366 | break; | |
367 | } | |
368 | ||
369 | /* unary */ | |
370 | case FILTER_OP_UNARY_PLUS: | |
371 | { | |
372 | struct unary_op *insn = (struct unary_op *) pc; | |
373 | ||
0305960f | 374 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
375 | default: |
376 | ERR("unknown register type\n"); | |
377 | ret = -EINVAL; | |
378 | goto end; | |
379 | ||
380 | case REG_S64: | |
381 | insn->op = FILTER_OP_UNARY_PLUS_S64; | |
382 | break; | |
383 | case REG_DOUBLE: | |
384 | insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; | |
385 | break; | |
53569322 MD |
386 | case REG_UNKNOWN: /* Dynamic typing. */ |
387 | break; | |
97b58163 | 388 | } |
0305960f | 389 | /* Pop 1, push 1 */ |
97b58163 MD |
390 | next_pc += sizeof(struct unary_op); |
391 | break; | |
392 | } | |
393 | ||
394 | case FILTER_OP_UNARY_MINUS: | |
395 | { | |
396 | struct unary_op *insn = (struct unary_op *) pc; | |
397 | ||
0305960f | 398 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
399 | default: |
400 | ERR("unknown register type\n"); | |
401 | ret = -EINVAL; | |
402 | goto end; | |
403 | ||
404 | case REG_S64: | |
405 | insn->op = FILTER_OP_UNARY_MINUS_S64; | |
406 | break; | |
407 | case REG_DOUBLE: | |
408 | insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; | |
409 | break; | |
53569322 MD |
410 | case REG_UNKNOWN: /* Dynamic typing. */ |
411 | break; | |
97b58163 | 412 | } |
0305960f | 413 | /* Pop 1, push 1 */ |
97b58163 MD |
414 | next_pc += sizeof(struct unary_op); |
415 | break; | |
416 | } | |
417 | ||
418 | case FILTER_OP_UNARY_NOT: | |
419 | { | |
420 | struct unary_op *insn = (struct unary_op *) pc; | |
421 | ||
0305960f | 422 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
423 | default: |
424 | ERR("unknown register type\n"); | |
425 | ret = -EINVAL; | |
426 | goto end; | |
427 | ||
428 | case REG_S64: | |
429 | insn->op = FILTER_OP_UNARY_NOT_S64; | |
430 | break; | |
431 | case REG_DOUBLE: | |
432 | insn->op = FILTER_OP_UNARY_NOT_DOUBLE; | |
433 | break; | |
53569322 MD |
434 | case REG_UNKNOWN: /* Dynamic typing. */ |
435 | break; | |
97b58163 | 436 | } |
0305960f | 437 | /* Pop 1, push 1 */ |
97b58163 MD |
438 | next_pc += sizeof(struct unary_op); |
439 | break; | |
440 | } | |
441 | ||
442 | case FILTER_OP_UNARY_PLUS_S64: | |
443 | case FILTER_OP_UNARY_MINUS_S64: | |
444 | case FILTER_OP_UNARY_NOT_S64: | |
445 | case FILTER_OP_UNARY_PLUS_DOUBLE: | |
446 | case FILTER_OP_UNARY_MINUS_DOUBLE: | |
447 | case FILTER_OP_UNARY_NOT_DOUBLE: | |
448 | { | |
0305960f | 449 | /* Pop 1, push 1 */ |
97b58163 MD |
450 | next_pc += sizeof(struct unary_op); |
451 | break; | |
452 | } | |
453 | ||
454 | /* logical */ | |
455 | case FILTER_OP_AND: | |
456 | case FILTER_OP_OR: | |
457 | { | |
b9f4cd79 MD |
458 | /* Continue to next instruction */ |
459 | /* Pop 1 when jump not taken */ | |
460 | if (vstack_pop(stack)) { | |
461 | ret = -EINVAL; | |
462 | goto end; | |
463 | } | |
97b58163 MD |
464 | next_pc += sizeof(struct logical_op); |
465 | break; | |
466 | } | |
467 | ||
77aa5901 | 468 | /* load field ref */ |
97b58163 MD |
469 | case FILTER_OP_LOAD_FIELD_REF: |
470 | { | |
471 | ERR("Unknown field ref type\n"); | |
472 | ret = -EINVAL; | |
473 | goto end; | |
474 | } | |
77aa5901 MD |
475 | /* get context ref */ |
476 | case FILTER_OP_GET_CONTEXT_REF: | |
477 | { | |
53569322 MD |
478 | if (vstack_push(stack)) { |
479 | ret = -EINVAL; | |
480 | goto end; | |
481 | } | |
482 | vstack_ax(stack)->type = REG_UNKNOWN; | |
483 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
484 | break; | |
77aa5901 | 485 | } |
97b58163 MD |
486 | case FILTER_OP_LOAD_FIELD_REF_STRING: |
487 | case FILTER_OP_LOAD_FIELD_REF_SEQUENCE: | |
77aa5901 | 488 | case FILTER_OP_GET_CONTEXT_REF_STRING: |
97b58163 | 489 | { |
0305960f MD |
490 | if (vstack_push(stack)) { |
491 | ret = -EINVAL; | |
492 | goto end; | |
493 | } | |
494 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
495 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
496 | break; | |
497 | } | |
498 | case FILTER_OP_LOAD_FIELD_REF_S64: | |
77aa5901 | 499 | case FILTER_OP_GET_CONTEXT_REF_S64: |
97b58163 | 500 | { |
0305960f MD |
501 | if (vstack_push(stack)) { |
502 | ret = -EINVAL; | |
503 | goto end; | |
504 | } | |
505 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
506 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
507 | break; | |
508 | } | |
509 | case FILTER_OP_LOAD_FIELD_REF_DOUBLE: | |
77aa5901 | 510 | case FILTER_OP_GET_CONTEXT_REF_DOUBLE: |
97b58163 | 511 | { |
0305960f MD |
512 | if (vstack_push(stack)) { |
513 | ret = -EINVAL; | |
514 | goto end; | |
515 | } | |
516 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
517 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
518 | break; | |
519 | } | |
520 | ||
77aa5901 | 521 | /* load from immediate operand */ |
97b58163 MD |
522 | case FILTER_OP_LOAD_STRING: |
523 | { | |
524 | struct load_op *insn = (struct load_op *) pc; | |
525 | ||
0305960f MD |
526 | if (vstack_push(stack)) { |
527 | ret = -EINVAL; | |
528 | goto end; | |
529 | } | |
530 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
531 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
532 | break; | |
533 | } | |
534 | ||
535 | case FILTER_OP_LOAD_S64: | |
536 | { | |
0305960f MD |
537 | if (vstack_push(stack)) { |
538 | ret = -EINVAL; | |
539 | goto end; | |
540 | } | |
541 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
542 | next_pc += sizeof(struct load_op) |
543 | + sizeof(struct literal_numeric); | |
544 | break; | |
545 | } | |
546 | ||
547 | case FILTER_OP_LOAD_DOUBLE: | |
548 | { | |
0305960f MD |
549 | if (vstack_push(stack)) { |
550 | ret = -EINVAL; | |
551 | goto end; | |
552 | } | |
553 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
554 | next_pc += sizeof(struct load_op) |
555 | + sizeof(struct literal_double); | |
556 | break; | |
557 | } | |
558 | ||
559 | /* cast */ | |
560 | case FILTER_OP_CAST_TO_S64: | |
561 | { | |
562 | struct cast_op *insn = (struct cast_op *) pc; | |
563 | ||
0305960f | 564 | switch (vstack_ax(stack)->type) { |
97b58163 MD |
565 | default: |
566 | ERR("unknown register type\n"); | |
567 | ret = -EINVAL; | |
568 | goto end; | |
569 | ||
570 | case REG_STRING: | |
571 | ERR("Cast op can only be applied to numeric or floating point registers\n"); | |
572 | ret = -EINVAL; | |
573 | goto end; | |
574 | case REG_S64: | |
575 | insn->op = FILTER_OP_CAST_NOP; | |
576 | break; | |
577 | case REG_DOUBLE: | |
578 | insn->op = FILTER_OP_CAST_DOUBLE_TO_S64; | |
579 | break; | |
53569322 MD |
580 | case REG_UNKNOWN: |
581 | break; | |
97b58163 | 582 | } |
0305960f MD |
583 | /* Pop 1, push 1 */ |
584 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
585 | next_pc += sizeof(struct cast_op); |
586 | break; | |
587 | } | |
588 | case FILTER_OP_CAST_DOUBLE_TO_S64: | |
589 | { | |
0305960f MD |
590 | /* Pop 1, push 1 */ |
591 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
592 | next_pc += sizeof(struct cast_op); |
593 | break; | |
594 | } | |
595 | case FILTER_OP_CAST_NOP: | |
596 | { | |
597 | next_pc += sizeof(struct cast_op); | |
598 | break; | |
599 | } | |
600 | ||
97b58163 MD |
601 | } |
602 | } | |
603 | end: | |
604 | return ret; | |
605 | } |