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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 | 28 | #include "lttng-filter.h" |
47e5f13e | 29 | #include <lttng/align.h> |
97b58163 | 30 | |
47e5f13e MD |
31 | static int lttng_fls(int val) |
32 | { | |
33 | int r = 32; | |
34 | unsigned int x = (unsigned int) val; | |
35 | ||
36 | if (!x) | |
37 | return 0; | |
38 | if (!(x & 0xFFFF0000U)) { | |
39 | x <<= 16; | |
40 | r -= 16; | |
41 | } | |
42 | if (!(x & 0xFF000000U)) { | |
43 | x <<= 8; | |
44 | r -= 8; | |
45 | } | |
46 | if (!(x & 0xF0000000U)) { | |
47 | x <<= 4; | |
48 | r -= 4; | |
49 | } | |
50 | if (!(x & 0xC0000000U)) { | |
51 | x <<= 2; | |
52 | r -= 2; | |
53 | } | |
54 | if (!(x & 0x80000000U)) { | |
55 | r -= 1; | |
56 | } | |
57 | return r; | |
58 | } | |
59 | ||
60 | static int get_count_order(unsigned int count) | |
61 | { | |
62 | int order; | |
63 | ||
64 | order = lttng_fls(count) - 1; | |
65 | if (count & (count - 1)) | |
66 | order++; | |
67 | return order; | |
68 | } | |
69 | ||
70 | static ssize_t bytecode_reserve_data(struct bytecode_runtime *runtime, | |
71 | size_t align, size_t len) | |
72 | { | |
73 | ssize_t ret; | |
74 | size_t padding = offset_align(runtime->data_len, align); | |
75 | size_t new_len = runtime->data_len + padding + len; | |
76 | size_t new_alloc_len = new_len; | |
77 | size_t old_alloc_len = runtime->data_alloc_len; | |
78 | ||
79 | if (new_len > FILTER_MAX_DATA_LEN) | |
80 | return -EINVAL; | |
81 | ||
82 | if (new_alloc_len > old_alloc_len) { | |
83 | char *newptr; | |
84 | ||
85 | new_alloc_len = | |
86 | max_t(size_t, 1U << get_count_order(new_alloc_len), old_alloc_len << 1); | |
87 | newptr = realloc(runtime->data, new_alloc_len); | |
88 | if (!newptr) | |
89 | return -ENOMEM; | |
90 | runtime->data = newptr; | |
91 | /* We zero directly the memory from start of allocation. */ | |
92 | memset(&runtime->data[old_alloc_len], 0, new_alloc_len - old_alloc_len); | |
93 | runtime->data_alloc_len = new_alloc_len; | |
94 | } | |
95 | runtime->data_len += padding; | |
96 | ret = runtime->data_len; | |
97 | runtime->data_len += len; | |
98 | return ret; | |
99 | } | |
100 | ||
101 | static ssize_t bytecode_push_data(struct bytecode_runtime *runtime, | |
102 | const void *p, size_t align, size_t len) | |
103 | { | |
104 | ssize_t offset; | |
105 | ||
106 | offset = bytecode_reserve_data(runtime, align, len); | |
107 | if (offset < 0) | |
108 | return -ENOMEM; | |
109 | memcpy(&runtime->data[offset], p, len); | |
110 | return offset; | |
111 | } | |
112 | ||
113 | static int specialize_load_field(struct vstack_entry *stack_top, | |
114 | struct load_op *insn) | |
115 | { | |
116 | int ret; | |
117 | ||
118 | switch (stack_top->load.type) { | |
119 | case LOAD_OBJECT: | |
120 | break; | |
121 | case LOAD_ROOT_CONTEXT: | |
122 | case LOAD_ROOT_APP_CONTEXT: | |
123 | case LOAD_ROOT_PAYLOAD: | |
124 | default: | |
125 | dbg_printf("Filter warning: cannot load root, missing field name.\n"); | |
126 | ret = -EINVAL; | |
127 | goto end; | |
128 | } | |
129 | switch (stack_top->load.object_type) { | |
130 | case OBJECT_TYPE_S8: | |
131 | dbg_printf("op load field s8\n"); | |
132 | stack_top->type = REG_S64; | |
133 | if (!stack_top->load.rev_bo) | |
134 | insn->op = FILTER_OP_LOAD_FIELD_S8; | |
135 | break; | |
136 | case OBJECT_TYPE_S16: | |
137 | dbg_printf("op load field s16\n"); | |
138 | stack_top->type = REG_S64; | |
139 | if (!stack_top->load.rev_bo) | |
140 | insn->op = FILTER_OP_LOAD_FIELD_S16; | |
141 | break; | |
142 | case OBJECT_TYPE_S32: | |
143 | dbg_printf("op load field s32\n"); | |
144 | stack_top->type = REG_S64; | |
145 | if (!stack_top->load.rev_bo) | |
146 | insn->op = FILTER_OP_LOAD_FIELD_S32; | |
147 | break; | |
148 | case OBJECT_TYPE_S64: | |
149 | dbg_printf("op load field s64\n"); | |
150 | stack_top->type = REG_S64; | |
151 | if (!stack_top->load.rev_bo) | |
152 | insn->op = FILTER_OP_LOAD_FIELD_S64; | |
153 | break; | |
154 | case OBJECT_TYPE_U8: | |
155 | dbg_printf("op load field u8\n"); | |
156 | stack_top->type = REG_S64; | |
157 | insn->op = FILTER_OP_LOAD_FIELD_U8; | |
158 | break; | |
159 | case OBJECT_TYPE_U16: | |
160 | dbg_printf("op load field u16\n"); | |
161 | stack_top->type = REG_S64; | |
162 | if (!stack_top->load.rev_bo) | |
163 | insn->op = FILTER_OP_LOAD_FIELD_U16; | |
164 | break; | |
165 | case OBJECT_TYPE_U32: | |
166 | dbg_printf("op load field u32\n"); | |
167 | stack_top->type = REG_S64; | |
168 | if (!stack_top->load.rev_bo) | |
169 | insn->op = FILTER_OP_LOAD_FIELD_U32; | |
170 | break; | |
171 | case OBJECT_TYPE_U64: | |
172 | dbg_printf("op load field u64\n"); | |
173 | stack_top->type = REG_S64; | |
174 | if (!stack_top->load.rev_bo) | |
175 | insn->op = FILTER_OP_LOAD_FIELD_U64; | |
176 | break; | |
177 | case OBJECT_TYPE_DOUBLE: | |
178 | stack_top->type = REG_DOUBLE; | |
179 | insn->op = FILTER_OP_LOAD_FIELD_DOUBLE; | |
180 | break; | |
181 | case OBJECT_TYPE_STRING: | |
182 | dbg_printf("op load field string\n"); | |
183 | stack_top->type = REG_STRING; | |
184 | insn->op = FILTER_OP_LOAD_FIELD_STRING; | |
185 | break; | |
186 | case OBJECT_TYPE_STRING_SEQUENCE: | |
187 | dbg_printf("op load field string sequence\n"); | |
188 | stack_top->type = REG_STRING; | |
189 | insn->op = FILTER_OP_LOAD_FIELD_SEQUENCE; | |
190 | break; | |
191 | case OBJECT_TYPE_DYNAMIC: | |
192 | dbg_printf("op load field dynamic\n"); | |
193 | stack_top->type = REG_UNKNOWN; | |
194 | /* Don't specialize load op. */ | |
195 | break; | |
196 | case OBJECT_TYPE_SEQUENCE: | |
197 | case OBJECT_TYPE_ARRAY: | |
198 | case OBJECT_TYPE_STRUCT: | |
199 | case OBJECT_TYPE_VARIANT: | |
200 | ERR("Sequences, arrays, struct and variant cannot be loaded (nested types)."); | |
201 | ret = -EINVAL; | |
202 | goto end; | |
203 | } | |
204 | return 0; | |
205 | ||
206 | end: | |
207 | return ret; | |
208 | } | |
209 | ||
210 | static int specialize_get_index_object_type(enum object_type *otype, | |
211 | int signedness, uint32_t elem_len) | |
212 | { | |
213 | switch (elem_len) { | |
214 | case 8: | |
215 | if (signedness) | |
216 | *otype = OBJECT_TYPE_S8; | |
217 | else | |
218 | *otype = OBJECT_TYPE_U8; | |
219 | break; | |
220 | case 16: | |
221 | if (signedness) | |
222 | *otype = OBJECT_TYPE_S16; | |
223 | else | |
224 | *otype = OBJECT_TYPE_U16; | |
225 | break; | |
226 | case 32: | |
227 | if (signedness) | |
228 | *otype = OBJECT_TYPE_S32; | |
229 | else | |
230 | *otype = OBJECT_TYPE_U32; | |
231 | break; | |
232 | case 64: | |
233 | if (signedness) | |
234 | *otype = OBJECT_TYPE_S64; | |
235 | else | |
236 | *otype = OBJECT_TYPE_U64; | |
237 | break; | |
238 | default: | |
239 | return -EINVAL; | |
240 | } | |
241 | return 0; | |
242 | } | |
243 | ||
244 | static int specialize_get_index(struct bytecode_runtime *runtime, | |
245 | struct load_op *insn, uint64_t index, | |
246 | struct vstack_entry *stack_top, | |
247 | int idx_len) | |
248 | { | |
249 | int ret; | |
250 | struct filter_get_index_data gid; | |
251 | ssize_t data_offset; | |
252 | ||
253 | memset(&gid, 0, sizeof(gid)); | |
254 | switch (stack_top->load.type) { | |
255 | case LOAD_OBJECT: | |
256 | switch (stack_top->load.object_type) { | |
257 | case OBJECT_TYPE_ARRAY: | |
258 | { | |
259 | const struct lttng_event_field *field; | |
260 | uint32_t elem_len, num_elems; | |
261 | int signedness; | |
262 | ||
263 | field = stack_top->load.field; | |
264 | elem_len = field->type.u.array.elem_type.u.basic.integer.size; | |
265 | signedness = field->type.u.array.elem_type.u.basic.integer.signedness; | |
266 | num_elems = field->type.u.array.length; | |
267 | if (index >= num_elems) { | |
268 | ret = -EINVAL; | |
269 | goto end; | |
270 | } | |
271 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
272 | signedness, elem_len); | |
273 | if (ret) | |
274 | goto end; | |
275 | gid.offset = index * (elem_len / CHAR_BIT); | |
276 | gid.array_len = num_elems * (elem_len / CHAR_BIT); | |
277 | gid.elem.type = stack_top->load.object_type; | |
278 | gid.elem.len = elem_len; | |
279 | if (field->type.u.array.elem_type.u.basic.integer.reverse_byte_order) | |
280 | gid.elem.rev_bo = true; | |
281 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
282 | break; | |
283 | } | |
284 | case OBJECT_TYPE_SEQUENCE: | |
285 | { | |
286 | const struct lttng_event_field *field; | |
287 | uint32_t elem_len; | |
288 | int signedness; | |
289 | ||
290 | field = stack_top->load.field; | |
291 | elem_len = field->type.u.sequence.elem_type.u.basic.integer.size; | |
292 | signedness = field->type.u.sequence.elem_type.u.basic.integer.signedness; | |
293 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
294 | signedness, elem_len); | |
295 | if (ret) | |
296 | goto end; | |
297 | gid.offset = index * (elem_len / CHAR_BIT); | |
298 | gid.elem.type = stack_top->load.object_type; | |
299 | gid.elem.len = elem_len; | |
300 | if (field->type.u.sequence.elem_type.u.basic.integer.reverse_byte_order) | |
301 | gid.elem.rev_bo = true; | |
302 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
303 | break; | |
304 | } | |
305 | case OBJECT_TYPE_STRUCT: | |
306 | /* Only generated by the specialize phase. */ | |
307 | case OBJECT_TYPE_VARIANT: /* Fall-through */ | |
308 | default: | |
309 | ERR("Unexpected get index type %d", | |
310 | (int) stack_top->load.object_type); | |
311 | ret = -EINVAL; | |
312 | goto end; | |
313 | } | |
314 | break; | |
315 | case LOAD_ROOT_CONTEXT: | |
316 | case LOAD_ROOT_APP_CONTEXT: | |
317 | case LOAD_ROOT_PAYLOAD: | |
318 | ERR("Index lookup for root field not implemented yet."); | |
319 | ret = -EINVAL; | |
320 | goto end; | |
321 | } | |
322 | data_offset = bytecode_push_data(runtime, &gid, | |
323 | __alignof__(gid), sizeof(gid)); | |
324 | if (data_offset < 0) { | |
325 | ret = -EINVAL; | |
326 | goto end; | |
327 | } | |
328 | switch (idx_len) { | |
329 | case 2: | |
330 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
331 | break; | |
332 | case 8: | |
333 | ((struct get_index_u64 *) insn->data)->index = data_offset; | |
334 | break; | |
335 | default: | |
336 | ret = -EINVAL; | |
337 | goto end; | |
338 | } | |
339 | ||
340 | return 0; | |
341 | ||
342 | end: | |
343 | return ret; | |
344 | } | |
345 | ||
346 | static int specialize_context_lookup_name(struct lttng_ctx *ctx, | |
347 | struct bytecode_runtime *bytecode, | |
348 | struct load_op *insn) | |
349 | { | |
350 | uint16_t offset; | |
351 | const char *name; | |
352 | ||
353 | offset = ((struct get_symbol *) insn->data)->offset; | |
354 | name = bytecode->p.bc->bc.data + bytecode->p.bc->bc.reloc_offset + offset; | |
355 | return lttng_get_context_index(ctx, name); | |
356 | } | |
357 | ||
358 | static int specialize_load_object(const struct lttng_event_field *field, | |
359 | struct vstack_load *load, bool is_context) | |
360 | { | |
361 | load->type = LOAD_OBJECT; | |
362 | /* | |
363 | * LTTng-UST layout all integer fields as s64 on the stack for the filter. | |
364 | */ | |
365 | switch (field->type.atype) { | |
366 | case atype_integer: | |
367 | if (field->type.u.basic.integer.signedness) | |
368 | load->object_type = OBJECT_TYPE_S64; | |
369 | else | |
370 | load->object_type = OBJECT_TYPE_U64; | |
371 | load->rev_bo = false; | |
372 | break; | |
373 | case atype_enum: | |
374 | { | |
375 | const struct lttng_integer_type *itype = | |
376 | &field->type.u.basic.enumeration.container_type; | |
377 | ||
378 | if (itype->signedness) | |
379 | load->object_type = OBJECT_TYPE_S64; | |
380 | else | |
381 | load->object_type = OBJECT_TYPE_U64; | |
382 | load->rev_bo = false; | |
383 | break; | |
384 | } | |
385 | case atype_array: | |
386 | if (field->type.u.array.elem_type.atype != atype_integer) { | |
387 | ERR("Array nesting only supports integer types."); | |
388 | return -EINVAL; | |
389 | } | |
390 | if (is_context) { | |
391 | load->object_type = OBJECT_TYPE_STRING; | |
392 | } else { | |
393 | if (field->type.u.array.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
394 | load->object_type = OBJECT_TYPE_ARRAY; | |
395 | load->field = field; | |
396 | } else { | |
397 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
398 | } | |
399 | } | |
400 | break; | |
401 | case atype_sequence: | |
402 | if (field->type.u.sequence.elem_type.atype != atype_integer) { | |
403 | ERR("Sequence nesting only supports integer types."); | |
404 | return -EINVAL; | |
405 | } | |
406 | if (is_context) { | |
407 | load->object_type = OBJECT_TYPE_STRING; | |
408 | } else { | |
409 | if (field->type.u.sequence.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
410 | load->object_type = OBJECT_TYPE_SEQUENCE; | |
411 | load->field = field; | |
412 | } else { | |
413 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
414 | } | |
415 | } | |
416 | break; | |
417 | case atype_string: | |
418 | load->object_type = OBJECT_TYPE_STRING; | |
419 | break; | |
420 | case atype_float: | |
421 | load->object_type = OBJECT_TYPE_DOUBLE; | |
422 | break; | |
423 | case atype_dynamic: | |
424 | load->object_type = OBJECT_TYPE_DYNAMIC; | |
425 | return -EINVAL; | |
426 | case atype_struct: | |
427 | ERR("Structure type cannot be loaded."); | |
428 | return -EINVAL; | |
429 | default: | |
430 | ERR("Unknown type: %d", (int) field->type.atype); | |
431 | return -EINVAL; | |
432 | } | |
433 | return 0; | |
434 | } | |
435 | ||
436 | static int specialize_context_lookup(struct lttng_session *session, | |
437 | struct bytecode_runtime *runtime, | |
438 | struct load_op *insn, | |
439 | struct vstack_load *load) | |
440 | { | |
441 | int idx, ret; | |
442 | struct lttng_ctx_field *ctx_field; | |
443 | struct lttng_event_field *field; | |
444 | struct filter_get_index_data gid; | |
445 | ssize_t data_offset; | |
446 | ||
447 | idx = specialize_context_lookup_name(session->ctx, runtime, insn); | |
448 | if (idx < 0) { | |
449 | return -ENOENT; | |
450 | } | |
451 | ctx_field = &session->ctx->fields[idx]; | |
452 | field = &ctx_field->event_field; | |
453 | ret = specialize_load_object(field, load, true); | |
454 | if (ret) | |
455 | return ret; | |
456 | /* Specialize each get_symbol into a get_index. */ | |
457 | insn->op = FILTER_OP_GET_INDEX_U16; | |
458 | memset(&gid, 0, sizeof(gid)); | |
459 | gid.ctx_index = idx; | |
460 | gid.elem.type = load->object_type; | |
461 | data_offset = bytecode_push_data(runtime, &gid, | |
462 | __alignof__(gid), sizeof(gid)); | |
463 | if (data_offset < 0) { | |
464 | return -EINVAL; | |
465 | } | |
466 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
467 | return 0; | |
468 | } | |
469 | ||
470 | static int specialize_app_context_lookup(struct lttng_session *session, | |
471 | struct bytecode_runtime *runtime, | |
472 | struct load_op *insn, | |
473 | struct vstack_load *load) | |
474 | { | |
475 | uint16_t offset; | |
476 | const char *orig_name; | |
477 | char *name = NULL; | |
478 | int idx, ret; | |
479 | struct lttng_ctx_field *ctx_field; | |
480 | struct lttng_event_field *field; | |
481 | struct filter_get_index_data gid; | |
482 | ssize_t data_offset; | |
483 | ||
484 | offset = ((struct get_symbol *) insn->data)->offset; | |
485 | orig_name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
486 | name = zmalloc(strlen(orig_name) + strlen("$app.") + 1); | |
487 | if (!name) { | |
488 | ret = -ENOMEM; | |
489 | goto end; | |
490 | } | |
491 | strcpy(name, "$app."); | |
492 | strcat(name, orig_name); | |
493 | idx = lttng_get_context_index(session->ctx, name); | |
494 | if (idx < 0) { | |
495 | assert(lttng_context_is_app(name)); | |
496 | ret = lttng_ust_add_app_context_to_ctx_rcu(name, | |
497 | &session->ctx); | |
498 | if (ret) | |
499 | return ret; | |
500 | idx = lttng_get_context_index(session->ctx, | |
501 | name); | |
502 | if (idx < 0) | |
503 | return -ENOENT; | |
504 | } | |
505 | ctx_field = &session->ctx->fields[idx]; | |
506 | field = &ctx_field->event_field; | |
507 | ret = specialize_load_object(field, load, true); | |
508 | if (ret) | |
509 | goto end; | |
510 | /* Specialize each get_symbol into a get_index. */ | |
511 | insn->op = FILTER_OP_GET_INDEX_U16; | |
512 | memset(&gid, 0, sizeof(gid)); | |
513 | gid.ctx_index = idx; | |
514 | gid.elem.type = load->object_type; | |
515 | data_offset = bytecode_push_data(runtime, &gid, | |
516 | __alignof__(gid), sizeof(gid)); | |
517 | if (data_offset < 0) { | |
518 | ret = -EINVAL; | |
519 | goto end; | |
520 | } | |
521 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
522 | ret = 0; | |
523 | end: | |
524 | free(name); | |
525 | return ret; | |
526 | } | |
527 | ||
528 | static int specialize_event_payload_lookup(struct lttng_event *event, | |
529 | struct bytecode_runtime *runtime, | |
530 | struct load_op *insn, | |
531 | struct vstack_load *load) | |
532 | { | |
533 | const char *name; | |
534 | uint16_t offset; | |
535 | const struct lttng_event_desc *desc = event->desc; | |
536 | unsigned int i, nr_fields; | |
537 | bool found = false; | |
538 | uint32_t field_offset = 0; | |
539 | const struct lttng_event_field *field; | |
540 | int ret; | |
541 | struct filter_get_index_data gid; | |
542 | ssize_t data_offset; | |
543 | ||
544 | nr_fields = desc->nr_fields; | |
545 | offset = ((struct get_symbol *) insn->data)->offset; | |
546 | name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
547 | for (i = 0; i < nr_fields; i++) { | |
548 | field = &desc->fields[i]; | |
549 | if (!strcmp(field->name, name)) { | |
550 | found = true; | |
551 | break; | |
552 | } | |
553 | /* compute field offset on stack */ | |
554 | switch (field->type.atype) { | |
555 | case atype_integer: | |
556 | case atype_enum: | |
557 | field_offset += sizeof(int64_t); | |
558 | break; | |
559 | case atype_array: | |
560 | case atype_sequence: | |
561 | field_offset += sizeof(unsigned long); | |
562 | field_offset += sizeof(void *); | |
563 | break; | |
564 | case atype_string: | |
565 | field_offset += sizeof(void *); | |
566 | break; | |
567 | case atype_float: | |
568 | field_offset += sizeof(double); | |
569 | break; | |
570 | default: | |
571 | ret = -EINVAL; | |
572 | goto end; | |
573 | } | |
574 | } | |
575 | if (!found) { | |
576 | ret = -EINVAL; | |
577 | goto end; | |
578 | } | |
579 | ||
580 | ret = specialize_load_object(field, load, false); | |
581 | if (ret) | |
582 | goto end; | |
583 | ||
584 | /* Specialize each get_symbol into a get_index. */ | |
585 | insn->op = FILTER_OP_GET_INDEX_U16; | |
586 | memset(&gid, 0, sizeof(gid)); | |
587 | gid.offset = field_offset; | |
588 | gid.elem.type = load->object_type; | |
589 | data_offset = bytecode_push_data(runtime, &gid, | |
590 | __alignof__(gid), sizeof(gid)); | |
591 | if (data_offset < 0) { | |
592 | ret = -EINVAL; | |
593 | goto end; | |
594 | } | |
595 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
596 | ret = 0; | |
597 | end: | |
598 | return ret; | |
599 | } | |
600 | ||
601 | int lttng_filter_specialize_bytecode(struct lttng_event *event, | |
602 | struct bytecode_runtime *bytecode) | |
97b58163 MD |
603 | { |
604 | void *pc, *next_pc, *start_pc; | |
605 | int ret = -EINVAL; | |
0305960f MD |
606 | struct vstack _stack; |
607 | struct vstack *stack = &_stack; | |
47e5f13e | 608 | struct lttng_session *session = bytecode->p.session; |
97b58163 | 609 | |
0305960f | 610 | vstack_init(stack); |
97b58163 | 611 | |
47e5f13e | 612 | start_pc = &bytecode->code[0]; |
97b58163 MD |
613 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; |
614 | pc = next_pc) { | |
615 | switch (*(filter_opcode_t *) pc) { | |
616 | case FILTER_OP_UNKNOWN: | |
617 | default: | |
618 | ERR("unknown bytecode op %u\n", | |
619 | (unsigned int) *(filter_opcode_t *) pc); | |
620 | ret = -EINVAL; | |
621 | goto end; | |
622 | ||
623 | case FILTER_OP_RETURN: | |
624 | ret = 0; | |
625 | goto end; | |
626 | ||
627 | /* binary */ | |
628 | case FILTER_OP_MUL: | |
629 | case FILTER_OP_DIV: | |
630 | case FILTER_OP_MOD: | |
631 | case FILTER_OP_PLUS: | |
632 | case FILTER_OP_MINUS: | |
97b58163 MD |
633 | ERR("unsupported bytecode op %u\n", |
634 | (unsigned int) *(filter_opcode_t *) pc); | |
635 | ret = -EINVAL; | |
636 | goto end; | |
637 | ||
638 | case FILTER_OP_EQ: | |
639 | { | |
640 | struct binary_op *insn = (struct binary_op *) pc; | |
641 | ||
0305960f | 642 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
643 | default: |
644 | ERR("unknown register type\n"); | |
645 | ret = -EINVAL; | |
646 | goto end; | |
647 | ||
648 | case REG_STRING: | |
53569322 MD |
649 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
650 | break; | |
3151a51d PP |
651 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
652 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
653 | else | |
654 | insn->op = FILTER_OP_EQ_STRING; | |
655 | break; | |
656 | case REG_STAR_GLOB_STRING: | |
657 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
658 | break; | |
659 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
97b58163 MD |
660 | break; |
661 | case REG_S64: | |
53569322 MD |
662 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
663 | break; | |
0305960f | 664 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
665 | insn->op = FILTER_OP_EQ_S64; |
666 | else | |
dbea82ec | 667 | insn->op = FILTER_OP_EQ_DOUBLE_S64; |
97b58163 MD |
668 | break; |
669 | case REG_DOUBLE: | |
53569322 MD |
670 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
671 | break; | |
dbea82ec MD |
672 | if (vstack_bx(stack)->type == REG_S64) |
673 | insn->op = FILTER_OP_EQ_S64_DOUBLE; | |
674 | else | |
675 | insn->op = FILTER_OP_EQ_DOUBLE; | |
97b58163 | 676 | break; |
53569322 MD |
677 | case REG_UNKNOWN: |
678 | break; /* Dynamic typing. */ | |
97b58163 | 679 | } |
0305960f MD |
680 | /* Pop 2, push 1 */ |
681 | if (vstack_pop(stack)) { | |
682 | ret = -EINVAL; | |
683 | goto end; | |
684 | } | |
685 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
686 | next_pc += sizeof(struct binary_op); |
687 | break; | |
688 | } | |
689 | ||
690 | case FILTER_OP_NE: | |
691 | { | |
692 | struct binary_op *insn = (struct binary_op *) pc; | |
693 | ||
0305960f | 694 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
695 | default: |
696 | ERR("unknown register type\n"); | |
697 | ret = -EINVAL; | |
698 | goto end; | |
699 | ||
700 | case REG_STRING: | |
53569322 MD |
701 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
702 | break; | |
3151a51d PP |
703 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
704 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
705 | else | |
706 | insn->op = FILTER_OP_NE_STRING; | |
707 | break; | |
708 | case REG_STAR_GLOB_STRING: | |
709 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
710 | break; | |
711 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
97b58163 MD |
712 | break; |
713 | case REG_S64: | |
53569322 MD |
714 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
715 | break; | |
0305960f | 716 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
717 | insn->op = FILTER_OP_NE_S64; |
718 | else | |
dbea82ec | 719 | insn->op = FILTER_OP_NE_DOUBLE_S64; |
97b58163 MD |
720 | break; |
721 | case REG_DOUBLE: | |
53569322 MD |
722 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
723 | break; | |
dbea82ec MD |
724 | if (vstack_bx(stack)->type == REG_S64) |
725 | insn->op = FILTER_OP_NE_S64_DOUBLE; | |
726 | else | |
727 | insn->op = FILTER_OP_NE_DOUBLE; | |
97b58163 | 728 | break; |
53569322 MD |
729 | case REG_UNKNOWN: |
730 | break; /* Dynamic typing. */ | |
97b58163 | 731 | } |
0305960f MD |
732 | /* Pop 2, push 1 */ |
733 | if (vstack_pop(stack)) { | |
734 | ret = -EINVAL; | |
735 | goto end; | |
736 | } | |
737 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
738 | next_pc += sizeof(struct binary_op); |
739 | break; | |
740 | } | |
741 | ||
742 | case FILTER_OP_GT: | |
743 | { | |
744 | struct binary_op *insn = (struct binary_op *) pc; | |
745 | ||
0305960f | 746 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
747 | default: |
748 | ERR("unknown register type\n"); | |
749 | ret = -EINVAL; | |
750 | goto end; | |
751 | ||
3151a51d PP |
752 | case REG_STAR_GLOB_STRING: |
753 | ERR("invalid register type for > binary operator\n"); | |
754 | ret = -EINVAL; | |
755 | goto end; | |
97b58163 | 756 | case REG_STRING: |
53569322 MD |
757 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
758 | break; | |
97b58163 MD |
759 | insn->op = FILTER_OP_GT_STRING; |
760 | break; | |
761 | case REG_S64: | |
53569322 MD |
762 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
763 | break; | |
0305960f | 764 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
765 | insn->op = FILTER_OP_GT_S64; |
766 | else | |
dbea82ec | 767 | insn->op = FILTER_OP_GT_DOUBLE_S64; |
97b58163 MD |
768 | break; |
769 | case REG_DOUBLE: | |
53569322 MD |
770 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
771 | break; | |
dbea82ec MD |
772 | if (vstack_bx(stack)->type == REG_S64) |
773 | insn->op = FILTER_OP_GT_S64_DOUBLE; | |
774 | else | |
775 | insn->op = FILTER_OP_GT_DOUBLE; | |
97b58163 | 776 | break; |
53569322 MD |
777 | case REG_UNKNOWN: |
778 | break; /* Dynamic typing. */ | |
97b58163 | 779 | } |
0305960f MD |
780 | /* Pop 2, push 1 */ |
781 | if (vstack_pop(stack)) { | |
782 | ret = -EINVAL; | |
783 | goto end; | |
784 | } | |
785 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
786 | next_pc += sizeof(struct binary_op); |
787 | break; | |
788 | } | |
789 | ||
790 | case FILTER_OP_LT: | |
791 | { | |
792 | struct binary_op *insn = (struct binary_op *) pc; | |
793 | ||
0305960f | 794 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
795 | default: |
796 | ERR("unknown register type\n"); | |
797 | ret = -EINVAL; | |
798 | goto end; | |
799 | ||
3151a51d PP |
800 | case REG_STAR_GLOB_STRING: |
801 | ERR("invalid register type for < binary operator\n"); | |
802 | ret = -EINVAL; | |
803 | goto end; | |
97b58163 | 804 | case REG_STRING: |
53569322 MD |
805 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
806 | break; | |
97b58163 MD |
807 | insn->op = FILTER_OP_LT_STRING; |
808 | break; | |
809 | case REG_S64: | |
53569322 MD |
810 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
811 | break; | |
0305960f | 812 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
813 | insn->op = FILTER_OP_LT_S64; |
814 | else | |
dbea82ec | 815 | insn->op = FILTER_OP_LT_DOUBLE_S64; |
97b58163 MD |
816 | break; |
817 | case REG_DOUBLE: | |
53569322 MD |
818 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
819 | break; | |
dbea82ec MD |
820 | if (vstack_bx(stack)->type == REG_S64) |
821 | insn->op = FILTER_OP_LT_S64_DOUBLE; | |
822 | else | |
823 | insn->op = FILTER_OP_LT_DOUBLE; | |
97b58163 | 824 | break; |
53569322 MD |
825 | case REG_UNKNOWN: |
826 | break; /* Dynamic typing. */ | |
97b58163 | 827 | } |
0305960f MD |
828 | /* Pop 2, push 1 */ |
829 | if (vstack_pop(stack)) { | |
830 | ret = -EINVAL; | |
831 | goto end; | |
832 | } | |
833 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
834 | next_pc += sizeof(struct binary_op); |
835 | break; | |
836 | } | |
837 | ||
838 | case FILTER_OP_GE: | |
839 | { | |
840 | struct binary_op *insn = (struct binary_op *) pc; | |
841 | ||
0305960f | 842 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
843 | default: |
844 | ERR("unknown register type\n"); | |
845 | ret = -EINVAL; | |
846 | goto end; | |
847 | ||
3151a51d PP |
848 | case REG_STAR_GLOB_STRING: |
849 | ERR("invalid register type for >= binary operator\n"); | |
850 | ret = -EINVAL; | |
851 | goto end; | |
97b58163 | 852 | case REG_STRING: |
53569322 MD |
853 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
854 | break; | |
97b58163 MD |
855 | insn->op = FILTER_OP_GE_STRING; |
856 | break; | |
857 | case REG_S64: | |
53569322 MD |
858 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
859 | break; | |
0305960f | 860 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
861 | insn->op = FILTER_OP_GE_S64; |
862 | else | |
dbea82ec | 863 | insn->op = FILTER_OP_GE_DOUBLE_S64; |
97b58163 MD |
864 | break; |
865 | case REG_DOUBLE: | |
53569322 MD |
866 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
867 | break; | |
dbea82ec MD |
868 | if (vstack_bx(stack)->type == REG_S64) |
869 | insn->op = FILTER_OP_GE_S64_DOUBLE; | |
870 | else | |
871 | insn->op = FILTER_OP_GE_DOUBLE; | |
97b58163 | 872 | break; |
53569322 MD |
873 | case REG_UNKNOWN: |
874 | break; /* Dynamic typing. */ | |
97b58163 | 875 | } |
0305960f MD |
876 | /* Pop 2, push 1 */ |
877 | if (vstack_pop(stack)) { | |
878 | ret = -EINVAL; | |
879 | goto end; | |
880 | } | |
881 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
882 | next_pc += sizeof(struct binary_op); |
883 | break; | |
884 | } | |
885 | case FILTER_OP_LE: | |
886 | { | |
887 | struct binary_op *insn = (struct binary_op *) pc; | |
888 | ||
0305960f | 889 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
890 | default: |
891 | ERR("unknown register type\n"); | |
892 | ret = -EINVAL; | |
893 | goto end; | |
894 | ||
3151a51d PP |
895 | case REG_STAR_GLOB_STRING: |
896 | ERR("invalid register type for <= binary operator\n"); | |
897 | ret = -EINVAL; | |
898 | goto end; | |
97b58163 | 899 | case REG_STRING: |
53569322 MD |
900 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
901 | break; | |
97b58163 MD |
902 | insn->op = FILTER_OP_LE_STRING; |
903 | break; | |
904 | case REG_S64: | |
53569322 MD |
905 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
906 | break; | |
0305960f | 907 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
908 | insn->op = FILTER_OP_LE_S64; |
909 | else | |
dbea82ec | 910 | insn->op = FILTER_OP_LE_DOUBLE_S64; |
97b58163 MD |
911 | break; |
912 | case REG_DOUBLE: | |
53569322 MD |
913 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
914 | break; | |
dbea82ec MD |
915 | if (vstack_bx(stack)->type == REG_S64) |
916 | insn->op = FILTER_OP_LE_S64_DOUBLE; | |
917 | else | |
918 | insn->op = FILTER_OP_LE_DOUBLE; | |
97b58163 | 919 | break; |
53569322 MD |
920 | case REG_UNKNOWN: |
921 | break; /* Dynamic typing. */ | |
97b58163 | 922 | } |
0305960f | 923 | vstack_ax(stack)->type = REG_S64; |
97b58163 MD |
924 | next_pc += sizeof(struct binary_op); |
925 | break; | |
926 | } | |
927 | ||
928 | case FILTER_OP_EQ_STRING: | |
929 | case FILTER_OP_NE_STRING: | |
930 | case FILTER_OP_GT_STRING: | |
931 | case FILTER_OP_LT_STRING: | |
932 | case FILTER_OP_GE_STRING: | |
933 | case FILTER_OP_LE_STRING: | |
3151a51d PP |
934 | case FILTER_OP_EQ_STAR_GLOB_STRING: |
935 | case FILTER_OP_NE_STAR_GLOB_STRING: | |
97b58163 MD |
936 | case FILTER_OP_EQ_S64: |
937 | case FILTER_OP_NE_S64: | |
938 | case FILTER_OP_GT_S64: | |
939 | case FILTER_OP_LT_S64: | |
940 | case FILTER_OP_GE_S64: | |
941 | case FILTER_OP_LE_S64: | |
942 | case FILTER_OP_EQ_DOUBLE: | |
943 | case FILTER_OP_NE_DOUBLE: | |
944 | case FILTER_OP_GT_DOUBLE: | |
945 | case FILTER_OP_LT_DOUBLE: | |
946 | case FILTER_OP_GE_DOUBLE: | |
947 | case FILTER_OP_LE_DOUBLE: | |
dbea82ec MD |
948 | case FILTER_OP_EQ_DOUBLE_S64: |
949 | case FILTER_OP_NE_DOUBLE_S64: | |
950 | case FILTER_OP_GT_DOUBLE_S64: | |
951 | case FILTER_OP_LT_DOUBLE_S64: | |
952 | case FILTER_OP_GE_DOUBLE_S64: | |
953 | case FILTER_OP_LE_DOUBLE_S64: | |
954 | case FILTER_OP_EQ_S64_DOUBLE: | |
955 | case FILTER_OP_NE_S64_DOUBLE: | |
956 | case FILTER_OP_GT_S64_DOUBLE: | |
957 | case FILTER_OP_LT_S64_DOUBLE: | |
958 | case FILTER_OP_GE_S64_DOUBLE: | |
959 | case FILTER_OP_LE_S64_DOUBLE: | |
0039e2d8 MD |
960 | case FILTER_OP_BIT_RSHIFT: |
961 | case FILTER_OP_BIT_LSHIFT: | |
47e5f13e MD |
962 | case FILTER_OP_BIT_AND: |
963 | case FILTER_OP_BIT_OR: | |
964 | case FILTER_OP_BIT_XOR: | |
97b58163 | 965 | { |
0305960f MD |
966 | /* Pop 2, push 1 */ |
967 | if (vstack_pop(stack)) { | |
968 | ret = -EINVAL; | |
969 | goto end; | |
970 | } | |
971 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
972 | next_pc += sizeof(struct binary_op); |
973 | break; | |
974 | } | |
975 | ||
976 | /* unary */ | |
977 | case FILTER_OP_UNARY_PLUS: | |
978 | { | |
979 | struct unary_op *insn = (struct unary_op *) pc; | |
980 | ||
0305960f | 981 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
982 | default: |
983 | ERR("unknown register type\n"); | |
984 | ret = -EINVAL; | |
985 | goto end; | |
986 | ||
987 | case REG_S64: | |
988 | insn->op = FILTER_OP_UNARY_PLUS_S64; | |
989 | break; | |
990 | case REG_DOUBLE: | |
991 | insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; | |
992 | break; | |
53569322 MD |
993 | case REG_UNKNOWN: /* Dynamic typing. */ |
994 | break; | |
97b58163 | 995 | } |
0305960f | 996 | /* Pop 1, push 1 */ |
97b58163 MD |
997 | next_pc += sizeof(struct unary_op); |
998 | break; | |
999 | } | |
1000 | ||
1001 | case FILTER_OP_UNARY_MINUS: | |
1002 | { | |
1003 | struct unary_op *insn = (struct unary_op *) pc; | |
1004 | ||
0305960f | 1005 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1006 | default: |
1007 | ERR("unknown register type\n"); | |
1008 | ret = -EINVAL; | |
1009 | goto end; | |
1010 | ||
1011 | case REG_S64: | |
1012 | insn->op = FILTER_OP_UNARY_MINUS_S64; | |
1013 | break; | |
1014 | case REG_DOUBLE: | |
1015 | insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; | |
1016 | break; | |
53569322 MD |
1017 | case REG_UNKNOWN: /* Dynamic typing. */ |
1018 | break; | |
97b58163 | 1019 | } |
0305960f | 1020 | /* Pop 1, push 1 */ |
97b58163 MD |
1021 | next_pc += sizeof(struct unary_op); |
1022 | break; | |
1023 | } | |
1024 | ||
1025 | case FILTER_OP_UNARY_NOT: | |
1026 | { | |
1027 | struct unary_op *insn = (struct unary_op *) pc; | |
1028 | ||
0305960f | 1029 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1030 | default: |
1031 | ERR("unknown register type\n"); | |
1032 | ret = -EINVAL; | |
1033 | goto end; | |
1034 | ||
1035 | case REG_S64: | |
1036 | insn->op = FILTER_OP_UNARY_NOT_S64; | |
1037 | break; | |
1038 | case REG_DOUBLE: | |
1039 | insn->op = FILTER_OP_UNARY_NOT_DOUBLE; | |
1040 | break; | |
53569322 MD |
1041 | case REG_UNKNOWN: /* Dynamic typing. */ |
1042 | break; | |
97b58163 | 1043 | } |
0305960f | 1044 | /* Pop 1, push 1 */ |
97b58163 MD |
1045 | next_pc += sizeof(struct unary_op); |
1046 | break; | |
1047 | } | |
1048 | ||
0039e2d8 MD |
1049 | case FILTER_OP_UNARY_BIT_NOT: |
1050 | { | |
1051 | /* Pop 1, push 1 */ | |
1052 | next_pc += sizeof(struct unary_op); | |
1053 | break; | |
1054 | } | |
1055 | ||
97b58163 MD |
1056 | case FILTER_OP_UNARY_PLUS_S64: |
1057 | case FILTER_OP_UNARY_MINUS_S64: | |
1058 | case FILTER_OP_UNARY_NOT_S64: | |
1059 | case FILTER_OP_UNARY_PLUS_DOUBLE: | |
1060 | case FILTER_OP_UNARY_MINUS_DOUBLE: | |
1061 | case FILTER_OP_UNARY_NOT_DOUBLE: | |
1062 | { | |
0305960f | 1063 | /* Pop 1, push 1 */ |
97b58163 MD |
1064 | next_pc += sizeof(struct unary_op); |
1065 | break; | |
1066 | } | |
1067 | ||
1068 | /* logical */ | |
1069 | case FILTER_OP_AND: | |
1070 | case FILTER_OP_OR: | |
1071 | { | |
b9f4cd79 MD |
1072 | /* Continue to next instruction */ |
1073 | /* Pop 1 when jump not taken */ | |
1074 | if (vstack_pop(stack)) { | |
1075 | ret = -EINVAL; | |
1076 | goto end; | |
1077 | } | |
97b58163 MD |
1078 | next_pc += sizeof(struct logical_op); |
1079 | break; | |
1080 | } | |
1081 | ||
77aa5901 | 1082 | /* load field ref */ |
97b58163 MD |
1083 | case FILTER_OP_LOAD_FIELD_REF: |
1084 | { | |
1085 | ERR("Unknown field ref type\n"); | |
1086 | ret = -EINVAL; | |
1087 | goto end; | |
1088 | } | |
77aa5901 MD |
1089 | /* get context ref */ |
1090 | case FILTER_OP_GET_CONTEXT_REF: | |
1091 | { | |
53569322 MD |
1092 | if (vstack_push(stack)) { |
1093 | ret = -EINVAL; | |
1094 | goto end; | |
1095 | } | |
1096 | vstack_ax(stack)->type = REG_UNKNOWN; | |
1097 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1098 | break; | |
77aa5901 | 1099 | } |
97b58163 MD |
1100 | case FILTER_OP_LOAD_FIELD_REF_STRING: |
1101 | case FILTER_OP_LOAD_FIELD_REF_SEQUENCE: | |
77aa5901 | 1102 | case FILTER_OP_GET_CONTEXT_REF_STRING: |
97b58163 | 1103 | { |
0305960f MD |
1104 | if (vstack_push(stack)) { |
1105 | ret = -EINVAL; | |
1106 | goto end; | |
1107 | } | |
1108 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
1109 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1110 | break; | |
1111 | } | |
1112 | case FILTER_OP_LOAD_FIELD_REF_S64: | |
77aa5901 | 1113 | case FILTER_OP_GET_CONTEXT_REF_S64: |
97b58163 | 1114 | { |
0305960f MD |
1115 | if (vstack_push(stack)) { |
1116 | ret = -EINVAL; | |
1117 | goto end; | |
1118 | } | |
1119 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1120 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1121 | break; | |
1122 | } | |
1123 | case FILTER_OP_LOAD_FIELD_REF_DOUBLE: | |
77aa5901 | 1124 | case FILTER_OP_GET_CONTEXT_REF_DOUBLE: |
97b58163 | 1125 | { |
0305960f MD |
1126 | if (vstack_push(stack)) { |
1127 | ret = -EINVAL; | |
1128 | goto end; | |
1129 | } | |
1130 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
1131 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1132 | break; | |
1133 | } | |
1134 | ||
77aa5901 | 1135 | /* load from immediate operand */ |
97b58163 MD |
1136 | case FILTER_OP_LOAD_STRING: |
1137 | { | |
1138 | struct load_op *insn = (struct load_op *) pc; | |
1139 | ||
0305960f MD |
1140 | if (vstack_push(stack)) { |
1141 | ret = -EINVAL; | |
1142 | goto end; | |
1143 | } | |
1144 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
1145 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
1146 | break; | |
1147 | } | |
1148 | ||
3151a51d PP |
1149 | case FILTER_OP_LOAD_STAR_GLOB_STRING: |
1150 | { | |
1151 | struct load_op *insn = (struct load_op *) pc; | |
1152 | ||
1153 | if (vstack_push(stack)) { | |
1154 | ret = -EINVAL; | |
1155 | goto end; | |
1156 | } | |
1157 | vstack_ax(stack)->type = REG_STAR_GLOB_STRING; | |
1158 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
1159 | break; | |
1160 | } | |
1161 | ||
97b58163 MD |
1162 | case FILTER_OP_LOAD_S64: |
1163 | { | |
0305960f MD |
1164 | if (vstack_push(stack)) { |
1165 | ret = -EINVAL; | |
1166 | goto end; | |
1167 | } | |
1168 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1169 | next_pc += sizeof(struct load_op) |
1170 | + sizeof(struct literal_numeric); | |
1171 | break; | |
1172 | } | |
1173 | ||
1174 | case FILTER_OP_LOAD_DOUBLE: | |
1175 | { | |
0305960f MD |
1176 | if (vstack_push(stack)) { |
1177 | ret = -EINVAL; | |
1178 | goto end; | |
1179 | } | |
1180 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
1181 | next_pc += sizeof(struct load_op) |
1182 | + sizeof(struct literal_double); | |
1183 | break; | |
1184 | } | |
1185 | ||
1186 | /* cast */ | |
1187 | case FILTER_OP_CAST_TO_S64: | |
1188 | { | |
1189 | struct cast_op *insn = (struct cast_op *) pc; | |
1190 | ||
0305960f | 1191 | switch (vstack_ax(stack)->type) { |
97b58163 MD |
1192 | default: |
1193 | ERR("unknown register type\n"); | |
1194 | ret = -EINVAL; | |
1195 | goto end; | |
1196 | ||
1197 | case REG_STRING: | |
3151a51d | 1198 | case REG_STAR_GLOB_STRING: |
97b58163 MD |
1199 | ERR("Cast op can only be applied to numeric or floating point registers\n"); |
1200 | ret = -EINVAL; | |
1201 | goto end; | |
1202 | case REG_S64: | |
1203 | insn->op = FILTER_OP_CAST_NOP; | |
1204 | break; | |
1205 | case REG_DOUBLE: | |
1206 | insn->op = FILTER_OP_CAST_DOUBLE_TO_S64; | |
1207 | break; | |
53569322 MD |
1208 | case REG_UNKNOWN: |
1209 | break; | |
97b58163 | 1210 | } |
0305960f MD |
1211 | /* Pop 1, push 1 */ |
1212 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1213 | next_pc += sizeof(struct cast_op); |
1214 | break; | |
1215 | } | |
1216 | case FILTER_OP_CAST_DOUBLE_TO_S64: | |
1217 | { | |
0305960f MD |
1218 | /* Pop 1, push 1 */ |
1219 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1220 | next_pc += sizeof(struct cast_op); |
1221 | break; | |
1222 | } | |
1223 | case FILTER_OP_CAST_NOP: | |
1224 | { | |
1225 | next_pc += sizeof(struct cast_op); | |
1226 | break; | |
1227 | } | |
1228 | ||
47e5f13e MD |
1229 | /* |
1230 | * Instructions for recursive traversal through composed types. | |
1231 | */ | |
1232 | case FILTER_OP_GET_CONTEXT_ROOT: | |
1233 | { | |
1234 | if (vstack_push(stack)) { | |
1235 | ret = -EINVAL; | |
1236 | goto end; | |
1237 | } | |
1238 | vstack_ax(stack)->type = REG_PTR; | |
1239 | vstack_ax(stack)->load.type = LOAD_ROOT_CONTEXT; | |
1240 | next_pc += sizeof(struct load_op); | |
1241 | break; | |
1242 | } | |
1243 | case FILTER_OP_GET_APP_CONTEXT_ROOT: | |
1244 | { | |
1245 | if (vstack_push(stack)) { | |
1246 | ret = -EINVAL; | |
1247 | goto end; | |
1248 | } | |
1249 | vstack_ax(stack)->type = REG_PTR; | |
1250 | vstack_ax(stack)->load.type = LOAD_ROOT_APP_CONTEXT; | |
1251 | next_pc += sizeof(struct load_op); | |
1252 | break; | |
1253 | } | |
1254 | case FILTER_OP_GET_PAYLOAD_ROOT: | |
1255 | { | |
1256 | if (vstack_push(stack)) { | |
1257 | ret = -EINVAL; | |
1258 | goto end; | |
1259 | } | |
1260 | vstack_ax(stack)->type = REG_PTR; | |
1261 | vstack_ax(stack)->load.type = LOAD_ROOT_PAYLOAD; | |
1262 | next_pc += sizeof(struct load_op); | |
1263 | break; | |
1264 | } | |
1265 | ||
1266 | case FILTER_OP_LOAD_FIELD: | |
1267 | { | |
1268 | struct load_op *insn = (struct load_op *) pc; | |
1269 | ||
1270 | assert(vstack_ax(stack)->type == REG_PTR); | |
1271 | /* Pop 1, push 1 */ | |
1272 | ret = specialize_load_field(vstack_ax(stack), insn); | |
1273 | if (ret) | |
1274 | goto end; | |
1275 | ||
1276 | next_pc += sizeof(struct load_op); | |
1277 | break; | |
1278 | } | |
1279 | ||
1280 | case FILTER_OP_LOAD_FIELD_S8: | |
1281 | case FILTER_OP_LOAD_FIELD_S16: | |
1282 | case FILTER_OP_LOAD_FIELD_S32: | |
1283 | case FILTER_OP_LOAD_FIELD_S64: | |
1284 | case FILTER_OP_LOAD_FIELD_U8: | |
1285 | case FILTER_OP_LOAD_FIELD_U16: | |
1286 | case FILTER_OP_LOAD_FIELD_U32: | |
1287 | case FILTER_OP_LOAD_FIELD_U64: | |
1288 | { | |
1289 | /* Pop 1, push 1 */ | |
1290 | vstack_ax(stack)->type = REG_S64; | |
1291 | next_pc += sizeof(struct load_op); | |
1292 | break; | |
1293 | } | |
1294 | ||
1295 | case FILTER_OP_LOAD_FIELD_STRING: | |
1296 | case FILTER_OP_LOAD_FIELD_SEQUENCE: | |
1297 | { | |
1298 | /* Pop 1, push 1 */ | |
1299 | vstack_ax(stack)->type = REG_STRING; | |
1300 | next_pc += sizeof(struct load_op); | |
1301 | break; | |
1302 | } | |
1303 | ||
1304 | case FILTER_OP_LOAD_FIELD_DOUBLE: | |
1305 | { | |
1306 | /* Pop 1, push 1 */ | |
1307 | vstack_ax(stack)->type = REG_DOUBLE; | |
1308 | next_pc += sizeof(struct load_op); | |
1309 | break; | |
1310 | } | |
1311 | ||
1312 | case FILTER_OP_GET_SYMBOL: | |
1313 | { | |
1314 | struct load_op *insn = (struct load_op *) pc; | |
1315 | ||
1316 | dbg_printf("op get symbol\n"); | |
1317 | switch (vstack_ax(stack)->load.type) { | |
1318 | case LOAD_OBJECT: | |
1319 | ERR("Nested fields not implemented yet."); | |
1320 | ret = -EINVAL; | |
1321 | goto end; | |
1322 | case LOAD_ROOT_CONTEXT: | |
1323 | /* Lookup context field. */ | |
1324 | ret = specialize_context_lookup(session, | |
1325 | bytecode, insn, | |
1326 | &vstack_ax(stack)->load); | |
1327 | if (ret) | |
1328 | goto end; | |
1329 | break; | |
1330 | case LOAD_ROOT_APP_CONTEXT: | |
1331 | /* Lookup app context field. */ | |
1332 | ret = specialize_app_context_lookup(session, | |
1333 | bytecode, insn, | |
1334 | &vstack_ax(stack)->load); | |
1335 | if (ret) | |
1336 | goto end; | |
1337 | break; | |
1338 | case LOAD_ROOT_PAYLOAD: | |
1339 | /* Lookup event payload field. */ | |
1340 | ret = specialize_event_payload_lookup(event, | |
1341 | bytecode, insn, | |
1342 | &vstack_ax(stack)->load); | |
1343 | if (ret) | |
1344 | goto end; | |
1345 | break; | |
1346 | } | |
1347 | next_pc += sizeof(struct load_op) + sizeof(struct get_symbol); | |
1348 | break; | |
1349 | } | |
1350 | ||
1351 | case FILTER_OP_GET_SYMBOL_FIELD: | |
1352 | { | |
1353 | /* Always generated by specialize phase. */ | |
1354 | ret = -EINVAL; | |
1355 | goto end; | |
1356 | } | |
1357 | ||
1358 | case FILTER_OP_GET_INDEX_U16: | |
1359 | { | |
1360 | struct load_op *insn = (struct load_op *) pc; | |
1361 | struct get_index_u16 *index = (struct get_index_u16 *) insn->data; | |
1362 | ||
1363 | dbg_printf("op get index u16\n"); | |
1364 | /* Pop 1, push 1 */ | |
1365 | ret = specialize_get_index(bytecode, insn, index->index, | |
1366 | vstack_ax(stack), sizeof(*index)); | |
1367 | if (ret) | |
1368 | goto end; | |
1369 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16); | |
1370 | break; | |
1371 | } | |
1372 | ||
1373 | case FILTER_OP_GET_INDEX_U64: | |
1374 | { | |
1375 | struct load_op *insn = (struct load_op *) pc; | |
1376 | struct get_index_u64 *index = (struct get_index_u64 *) insn->data; | |
1377 | ||
1378 | dbg_printf("op get index u64\n"); | |
1379 | /* Pop 1, push 1 */ | |
1380 | ret = specialize_get_index(bytecode, insn, index->index, | |
1381 | vstack_ax(stack), sizeof(*index)); | |
1382 | if (ret) | |
1383 | goto end; | |
1384 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64); | |
1385 | break; | |
1386 | } | |
1387 | ||
97b58163 MD |
1388 | } |
1389 | } | |
1390 | end: | |
1391 | return ret; | |
1392 | } |