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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 |
b4051ad8 FD |
28 | #include <stddef.h> |
29 | ||
97b58163 | 30 | #include "lttng-filter.h" |
47e5f13e | 31 | #include <lttng/align.h> |
97b58163 | 32 | |
47e5f13e MD |
33 | static int lttng_fls(int val) |
34 | { | |
35 | int r = 32; | |
36 | unsigned int x = (unsigned int) val; | |
37 | ||
38 | if (!x) | |
39 | return 0; | |
40 | if (!(x & 0xFFFF0000U)) { | |
41 | x <<= 16; | |
42 | r -= 16; | |
43 | } | |
44 | if (!(x & 0xFF000000U)) { | |
45 | x <<= 8; | |
46 | r -= 8; | |
47 | } | |
48 | if (!(x & 0xF0000000U)) { | |
49 | x <<= 4; | |
50 | r -= 4; | |
51 | } | |
52 | if (!(x & 0xC0000000U)) { | |
53 | x <<= 2; | |
54 | r -= 2; | |
55 | } | |
56 | if (!(x & 0x80000000U)) { | |
57 | r -= 1; | |
58 | } | |
59 | return r; | |
60 | } | |
61 | ||
62 | static int get_count_order(unsigned int count) | |
63 | { | |
64 | int order; | |
65 | ||
66 | order = lttng_fls(count) - 1; | |
67 | if (count & (count - 1)) | |
68 | order++; | |
69 | return order; | |
70 | } | |
71 | ||
72 | static ssize_t bytecode_reserve_data(struct bytecode_runtime *runtime, | |
73 | size_t align, size_t len) | |
74 | { | |
75 | ssize_t ret; | |
76 | size_t padding = offset_align(runtime->data_len, align); | |
77 | size_t new_len = runtime->data_len + padding + len; | |
78 | size_t new_alloc_len = new_len; | |
79 | size_t old_alloc_len = runtime->data_alloc_len; | |
80 | ||
81 | if (new_len > FILTER_MAX_DATA_LEN) | |
82 | return -EINVAL; | |
83 | ||
84 | if (new_alloc_len > old_alloc_len) { | |
85 | char *newptr; | |
86 | ||
87 | new_alloc_len = | |
88 | max_t(size_t, 1U << get_count_order(new_alloc_len), old_alloc_len << 1); | |
89 | newptr = realloc(runtime->data, new_alloc_len); | |
90 | if (!newptr) | |
91 | return -ENOMEM; | |
92 | runtime->data = newptr; | |
93 | /* We zero directly the memory from start of allocation. */ | |
94 | memset(&runtime->data[old_alloc_len], 0, new_alloc_len - old_alloc_len); | |
95 | runtime->data_alloc_len = new_alloc_len; | |
96 | } | |
97 | runtime->data_len += padding; | |
98 | ret = runtime->data_len; | |
99 | runtime->data_len += len; | |
100 | return ret; | |
101 | } | |
102 | ||
103 | static ssize_t bytecode_push_data(struct bytecode_runtime *runtime, | |
104 | const void *p, size_t align, size_t len) | |
105 | { | |
106 | ssize_t offset; | |
107 | ||
108 | offset = bytecode_reserve_data(runtime, align, len); | |
109 | if (offset < 0) | |
110 | return -ENOMEM; | |
111 | memcpy(&runtime->data[offset], p, len); | |
112 | return offset; | |
113 | } | |
114 | ||
115 | static int specialize_load_field(struct vstack_entry *stack_top, | |
116 | struct load_op *insn) | |
117 | { | |
118 | int ret; | |
119 | ||
120 | switch (stack_top->load.type) { | |
121 | case LOAD_OBJECT: | |
122 | break; | |
123 | case LOAD_ROOT_CONTEXT: | |
124 | case LOAD_ROOT_APP_CONTEXT: | |
125 | case LOAD_ROOT_PAYLOAD: | |
126 | default: | |
127 | dbg_printf("Filter warning: cannot load root, missing field name.\n"); | |
128 | ret = -EINVAL; | |
129 | goto end; | |
130 | } | |
131 | switch (stack_top->load.object_type) { | |
132 | case OBJECT_TYPE_S8: | |
133 | dbg_printf("op load field s8\n"); | |
134 | stack_top->type = REG_S64; | |
135 | if (!stack_top->load.rev_bo) | |
136 | insn->op = FILTER_OP_LOAD_FIELD_S8; | |
137 | break; | |
138 | case OBJECT_TYPE_S16: | |
139 | dbg_printf("op load field s16\n"); | |
140 | stack_top->type = REG_S64; | |
141 | if (!stack_top->load.rev_bo) | |
142 | insn->op = FILTER_OP_LOAD_FIELD_S16; | |
143 | break; | |
144 | case OBJECT_TYPE_S32: | |
145 | dbg_printf("op load field s32\n"); | |
146 | stack_top->type = REG_S64; | |
147 | if (!stack_top->load.rev_bo) | |
148 | insn->op = FILTER_OP_LOAD_FIELD_S32; | |
149 | break; | |
150 | case OBJECT_TYPE_S64: | |
151 | dbg_printf("op load field s64\n"); | |
152 | stack_top->type = REG_S64; | |
153 | if (!stack_top->load.rev_bo) | |
154 | insn->op = FILTER_OP_LOAD_FIELD_S64; | |
155 | break; | |
156 | case OBJECT_TYPE_U8: | |
157 | dbg_printf("op load field u8\n"); | |
158 | stack_top->type = REG_S64; | |
159 | insn->op = FILTER_OP_LOAD_FIELD_U8; | |
160 | break; | |
161 | case OBJECT_TYPE_U16: | |
162 | dbg_printf("op load field u16\n"); | |
163 | stack_top->type = REG_S64; | |
164 | if (!stack_top->load.rev_bo) | |
165 | insn->op = FILTER_OP_LOAD_FIELD_U16; | |
166 | break; | |
167 | case OBJECT_TYPE_U32: | |
168 | dbg_printf("op load field u32\n"); | |
169 | stack_top->type = REG_S64; | |
170 | if (!stack_top->load.rev_bo) | |
171 | insn->op = FILTER_OP_LOAD_FIELD_U32; | |
172 | break; | |
173 | case OBJECT_TYPE_U64: | |
174 | dbg_printf("op load field u64\n"); | |
175 | stack_top->type = REG_S64; | |
176 | if (!stack_top->load.rev_bo) | |
177 | insn->op = FILTER_OP_LOAD_FIELD_U64; | |
178 | break; | |
179 | case OBJECT_TYPE_DOUBLE: | |
180 | stack_top->type = REG_DOUBLE; | |
181 | insn->op = FILTER_OP_LOAD_FIELD_DOUBLE; | |
182 | break; | |
183 | case OBJECT_TYPE_STRING: | |
184 | dbg_printf("op load field string\n"); | |
185 | stack_top->type = REG_STRING; | |
186 | insn->op = FILTER_OP_LOAD_FIELD_STRING; | |
187 | break; | |
188 | case OBJECT_TYPE_STRING_SEQUENCE: | |
189 | dbg_printf("op load field string sequence\n"); | |
190 | stack_top->type = REG_STRING; | |
191 | insn->op = FILTER_OP_LOAD_FIELD_SEQUENCE; | |
192 | break; | |
193 | case OBJECT_TYPE_DYNAMIC: | |
194 | dbg_printf("op load field dynamic\n"); | |
195 | stack_top->type = REG_UNKNOWN; | |
196 | /* Don't specialize load op. */ | |
197 | break; | |
198 | case OBJECT_TYPE_SEQUENCE: | |
199 | case OBJECT_TYPE_ARRAY: | |
200 | case OBJECT_TYPE_STRUCT: | |
201 | case OBJECT_TYPE_VARIANT: | |
202 | ERR("Sequences, arrays, struct and variant cannot be loaded (nested types)."); | |
203 | ret = -EINVAL; | |
204 | goto end; | |
205 | } | |
206 | return 0; | |
207 | ||
208 | end: | |
209 | return ret; | |
210 | } | |
211 | ||
212 | static int specialize_get_index_object_type(enum object_type *otype, | |
213 | int signedness, uint32_t elem_len) | |
214 | { | |
215 | switch (elem_len) { | |
216 | case 8: | |
217 | if (signedness) | |
218 | *otype = OBJECT_TYPE_S8; | |
219 | else | |
220 | *otype = OBJECT_TYPE_U8; | |
221 | break; | |
222 | case 16: | |
223 | if (signedness) | |
224 | *otype = OBJECT_TYPE_S16; | |
225 | else | |
226 | *otype = OBJECT_TYPE_U16; | |
227 | break; | |
228 | case 32: | |
229 | if (signedness) | |
230 | *otype = OBJECT_TYPE_S32; | |
231 | else | |
232 | *otype = OBJECT_TYPE_U32; | |
233 | break; | |
234 | case 64: | |
235 | if (signedness) | |
236 | *otype = OBJECT_TYPE_S64; | |
237 | else | |
238 | *otype = OBJECT_TYPE_U64; | |
239 | break; | |
240 | default: | |
241 | return -EINVAL; | |
242 | } | |
243 | return 0; | |
244 | } | |
245 | ||
246 | static int specialize_get_index(struct bytecode_runtime *runtime, | |
247 | struct load_op *insn, uint64_t index, | |
248 | struct vstack_entry *stack_top, | |
249 | int idx_len) | |
250 | { | |
251 | int ret; | |
252 | struct filter_get_index_data gid; | |
253 | ssize_t data_offset; | |
254 | ||
255 | memset(&gid, 0, sizeof(gid)); | |
256 | switch (stack_top->load.type) { | |
257 | case LOAD_OBJECT: | |
258 | switch (stack_top->load.object_type) { | |
259 | case OBJECT_TYPE_ARRAY: | |
260 | { | |
261 | const struct lttng_event_field *field; | |
262 | uint32_t elem_len, num_elems; | |
263 | int signedness; | |
264 | ||
265 | field = stack_top->load.field; | |
266 | elem_len = field->type.u.array.elem_type.u.basic.integer.size; | |
267 | signedness = field->type.u.array.elem_type.u.basic.integer.signedness; | |
268 | num_elems = field->type.u.array.length; | |
269 | if (index >= num_elems) { | |
270 | ret = -EINVAL; | |
271 | goto end; | |
272 | } | |
273 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
274 | signedness, elem_len); | |
275 | if (ret) | |
276 | goto end; | |
277 | gid.offset = index * (elem_len / CHAR_BIT); | |
278 | gid.array_len = num_elems * (elem_len / CHAR_BIT); | |
279 | gid.elem.type = stack_top->load.object_type; | |
280 | gid.elem.len = elem_len; | |
281 | if (field->type.u.array.elem_type.u.basic.integer.reverse_byte_order) | |
282 | gid.elem.rev_bo = true; | |
283 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
284 | break; | |
285 | } | |
286 | case OBJECT_TYPE_SEQUENCE: | |
287 | { | |
288 | const struct lttng_event_field *field; | |
289 | uint32_t elem_len; | |
290 | int signedness; | |
291 | ||
292 | field = stack_top->load.field; | |
293 | elem_len = field->type.u.sequence.elem_type.u.basic.integer.size; | |
294 | signedness = field->type.u.sequence.elem_type.u.basic.integer.signedness; | |
295 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
296 | signedness, elem_len); | |
297 | if (ret) | |
298 | goto end; | |
299 | gid.offset = index * (elem_len / CHAR_BIT); | |
300 | gid.elem.type = stack_top->load.object_type; | |
301 | gid.elem.len = elem_len; | |
302 | if (field->type.u.sequence.elem_type.u.basic.integer.reverse_byte_order) | |
303 | gid.elem.rev_bo = true; | |
304 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
305 | break; | |
306 | } | |
307 | case OBJECT_TYPE_STRUCT: | |
308 | /* Only generated by the specialize phase. */ | |
309 | case OBJECT_TYPE_VARIANT: /* Fall-through */ | |
310 | default: | |
311 | ERR("Unexpected get index type %d", | |
312 | (int) stack_top->load.object_type); | |
313 | ret = -EINVAL; | |
314 | goto end; | |
315 | } | |
316 | break; | |
317 | case LOAD_ROOT_CONTEXT: | |
318 | case LOAD_ROOT_APP_CONTEXT: | |
319 | case LOAD_ROOT_PAYLOAD: | |
320 | ERR("Index lookup for root field not implemented yet."); | |
321 | ret = -EINVAL; | |
322 | goto end; | |
323 | } | |
324 | data_offset = bytecode_push_data(runtime, &gid, | |
325 | __alignof__(gid), sizeof(gid)); | |
326 | if (data_offset < 0) { | |
327 | ret = -EINVAL; | |
328 | goto end; | |
329 | } | |
330 | switch (idx_len) { | |
331 | case 2: | |
332 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
333 | break; | |
334 | case 8: | |
335 | ((struct get_index_u64 *) insn->data)->index = data_offset; | |
336 | break; | |
337 | default: | |
338 | ret = -EINVAL; | |
339 | goto end; | |
340 | } | |
341 | ||
342 | return 0; | |
343 | ||
344 | end: | |
345 | return ret; | |
346 | } | |
347 | ||
348 | static int specialize_context_lookup_name(struct lttng_ctx *ctx, | |
349 | struct bytecode_runtime *bytecode, | |
350 | struct load_op *insn) | |
351 | { | |
352 | uint16_t offset; | |
353 | const char *name; | |
354 | ||
355 | offset = ((struct get_symbol *) insn->data)->offset; | |
356 | name = bytecode->p.bc->bc.data + bytecode->p.bc->bc.reloc_offset + offset; | |
357 | return lttng_get_context_index(ctx, name); | |
358 | } | |
359 | ||
360 | static int specialize_load_object(const struct lttng_event_field *field, | |
361 | struct vstack_load *load, bool is_context) | |
362 | { | |
363 | load->type = LOAD_OBJECT; | |
364 | /* | |
365 | * LTTng-UST layout all integer fields as s64 on the stack for the filter. | |
366 | */ | |
367 | switch (field->type.atype) { | |
368 | case atype_integer: | |
369 | if (field->type.u.basic.integer.signedness) | |
370 | load->object_type = OBJECT_TYPE_S64; | |
371 | else | |
372 | load->object_type = OBJECT_TYPE_U64; | |
373 | load->rev_bo = false; | |
374 | break; | |
375 | case atype_enum: | |
376 | { | |
377 | const struct lttng_integer_type *itype = | |
378 | &field->type.u.basic.enumeration.container_type; | |
379 | ||
380 | if (itype->signedness) | |
381 | load->object_type = OBJECT_TYPE_S64; | |
382 | else | |
383 | load->object_type = OBJECT_TYPE_U64; | |
384 | load->rev_bo = false; | |
385 | break; | |
386 | } | |
387 | case atype_array: | |
388 | if (field->type.u.array.elem_type.atype != atype_integer) { | |
389 | ERR("Array nesting only supports integer types."); | |
390 | return -EINVAL; | |
391 | } | |
392 | if (is_context) { | |
393 | load->object_type = OBJECT_TYPE_STRING; | |
394 | } else { | |
395 | if (field->type.u.array.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
396 | load->object_type = OBJECT_TYPE_ARRAY; | |
397 | load->field = field; | |
398 | } else { | |
399 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
400 | } | |
401 | } | |
402 | break; | |
403 | case atype_sequence: | |
404 | if (field->type.u.sequence.elem_type.atype != atype_integer) { | |
405 | ERR("Sequence nesting only supports integer types."); | |
406 | return -EINVAL; | |
407 | } | |
408 | if (is_context) { | |
409 | load->object_type = OBJECT_TYPE_STRING; | |
410 | } else { | |
411 | if (field->type.u.sequence.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
412 | load->object_type = OBJECT_TYPE_SEQUENCE; | |
413 | load->field = field; | |
414 | } else { | |
415 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
416 | } | |
417 | } | |
418 | break; | |
419 | case atype_string: | |
420 | load->object_type = OBJECT_TYPE_STRING; | |
421 | break; | |
422 | case atype_float: | |
423 | load->object_type = OBJECT_TYPE_DOUBLE; | |
424 | break; | |
425 | case atype_dynamic: | |
426 | load->object_type = OBJECT_TYPE_DYNAMIC; | |
8d3190bd | 427 | break; |
47e5f13e MD |
428 | case atype_struct: |
429 | ERR("Structure type cannot be loaded."); | |
430 | return -EINVAL; | |
431 | default: | |
432 | ERR("Unknown type: %d", (int) field->type.atype); | |
433 | return -EINVAL; | |
434 | } | |
435 | return 0; | |
436 | } | |
437 | ||
438 | static int specialize_context_lookup(struct lttng_session *session, | |
439 | struct bytecode_runtime *runtime, | |
440 | struct load_op *insn, | |
441 | struct vstack_load *load) | |
442 | { | |
443 | int idx, ret; | |
444 | struct lttng_ctx_field *ctx_field; | |
445 | struct lttng_event_field *field; | |
446 | struct filter_get_index_data gid; | |
447 | ssize_t data_offset; | |
448 | ||
449 | idx = specialize_context_lookup_name(session->ctx, runtime, insn); | |
450 | if (idx < 0) { | |
451 | return -ENOENT; | |
452 | } | |
453 | ctx_field = &session->ctx->fields[idx]; | |
454 | field = &ctx_field->event_field; | |
455 | ret = specialize_load_object(field, load, true); | |
456 | if (ret) | |
457 | return ret; | |
458 | /* Specialize each get_symbol into a get_index. */ | |
459 | insn->op = FILTER_OP_GET_INDEX_U16; | |
460 | memset(&gid, 0, sizeof(gid)); | |
461 | gid.ctx_index = idx; | |
462 | gid.elem.type = load->object_type; | |
463 | data_offset = bytecode_push_data(runtime, &gid, | |
464 | __alignof__(gid), sizeof(gid)); | |
465 | if (data_offset < 0) { | |
466 | return -EINVAL; | |
467 | } | |
468 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
469 | return 0; | |
470 | } | |
471 | ||
472 | static int specialize_app_context_lookup(struct lttng_session *session, | |
473 | struct bytecode_runtime *runtime, | |
474 | struct load_op *insn, | |
475 | struct vstack_load *load) | |
476 | { | |
477 | uint16_t offset; | |
478 | const char *orig_name; | |
479 | char *name = NULL; | |
480 | int idx, ret; | |
481 | struct lttng_ctx_field *ctx_field; | |
482 | struct lttng_event_field *field; | |
483 | struct filter_get_index_data gid; | |
484 | ssize_t data_offset; | |
485 | ||
486 | offset = ((struct get_symbol *) insn->data)->offset; | |
487 | orig_name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
488 | name = zmalloc(strlen(orig_name) + strlen("$app.") + 1); | |
489 | if (!name) { | |
490 | ret = -ENOMEM; | |
491 | goto end; | |
492 | } | |
493 | strcpy(name, "$app."); | |
494 | strcat(name, orig_name); | |
495 | idx = lttng_get_context_index(session->ctx, name); | |
496 | if (idx < 0) { | |
497 | assert(lttng_context_is_app(name)); | |
498 | ret = lttng_ust_add_app_context_to_ctx_rcu(name, | |
499 | &session->ctx); | |
500 | if (ret) | |
501 | return ret; | |
502 | idx = lttng_get_context_index(session->ctx, | |
503 | name); | |
504 | if (idx < 0) | |
505 | return -ENOENT; | |
506 | } | |
507 | ctx_field = &session->ctx->fields[idx]; | |
508 | field = &ctx_field->event_field; | |
509 | ret = specialize_load_object(field, load, true); | |
510 | if (ret) | |
511 | goto end; | |
512 | /* Specialize each get_symbol into a get_index. */ | |
513 | insn->op = FILTER_OP_GET_INDEX_U16; | |
514 | memset(&gid, 0, sizeof(gid)); | |
515 | gid.ctx_index = idx; | |
516 | gid.elem.type = load->object_type; | |
517 | data_offset = bytecode_push_data(runtime, &gid, | |
518 | __alignof__(gid), sizeof(gid)); | |
519 | if (data_offset < 0) { | |
520 | ret = -EINVAL; | |
521 | goto end; | |
522 | } | |
523 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
524 | ret = 0; | |
525 | end: | |
526 | free(name); | |
527 | return ret; | |
528 | } | |
529 | ||
530 | static int specialize_event_payload_lookup(struct lttng_event *event, | |
531 | struct bytecode_runtime *runtime, | |
532 | struct load_op *insn, | |
533 | struct vstack_load *load) | |
534 | { | |
535 | const char *name; | |
536 | uint16_t offset; | |
537 | const struct lttng_event_desc *desc = event->desc; | |
538 | unsigned int i, nr_fields; | |
539 | bool found = false; | |
540 | uint32_t field_offset = 0; | |
541 | const struct lttng_event_field *field; | |
542 | int ret; | |
543 | struct filter_get_index_data gid; | |
544 | ssize_t data_offset; | |
545 | ||
546 | nr_fields = desc->nr_fields; | |
547 | offset = ((struct get_symbol *) insn->data)->offset; | |
548 | name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
549 | for (i = 0; i < nr_fields; i++) { | |
550 | field = &desc->fields[i]; | |
551 | if (!strcmp(field->name, name)) { | |
552 | found = true; | |
553 | break; | |
554 | } | |
555 | /* compute field offset on stack */ | |
556 | switch (field->type.atype) { | |
557 | case atype_integer: | |
558 | case atype_enum: | |
559 | field_offset += sizeof(int64_t); | |
560 | break; | |
561 | case atype_array: | |
562 | case atype_sequence: | |
563 | field_offset += sizeof(unsigned long); | |
564 | field_offset += sizeof(void *); | |
565 | break; | |
566 | case atype_string: | |
567 | field_offset += sizeof(void *); | |
568 | break; | |
569 | case atype_float: | |
570 | field_offset += sizeof(double); | |
571 | break; | |
572 | default: | |
573 | ret = -EINVAL; | |
574 | goto end; | |
575 | } | |
576 | } | |
577 | if (!found) { | |
578 | ret = -EINVAL; | |
579 | goto end; | |
580 | } | |
581 | ||
582 | ret = specialize_load_object(field, load, false); | |
583 | if (ret) | |
584 | goto end; | |
585 | ||
586 | /* Specialize each get_symbol into a get_index. */ | |
587 | insn->op = FILTER_OP_GET_INDEX_U16; | |
588 | memset(&gid, 0, sizeof(gid)); | |
589 | gid.offset = field_offset; | |
590 | gid.elem.type = load->object_type; | |
591 | data_offset = bytecode_push_data(runtime, &gid, | |
592 | __alignof__(gid), sizeof(gid)); | |
593 | if (data_offset < 0) { | |
594 | ret = -EINVAL; | |
595 | goto end; | |
596 | } | |
597 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
598 | ret = 0; | |
599 | end: | |
600 | return ret; | |
601 | } | |
602 | ||
603 | int lttng_filter_specialize_bytecode(struct lttng_event *event, | |
604 | struct bytecode_runtime *bytecode) | |
97b58163 MD |
605 | { |
606 | void *pc, *next_pc, *start_pc; | |
607 | int ret = -EINVAL; | |
0305960f MD |
608 | struct vstack _stack; |
609 | struct vstack *stack = &_stack; | |
47e5f13e | 610 | struct lttng_session *session = bytecode->p.session; |
97b58163 | 611 | |
0305960f | 612 | vstack_init(stack); |
97b58163 | 613 | |
47e5f13e | 614 | start_pc = &bytecode->code[0]; |
97b58163 MD |
615 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; |
616 | pc = next_pc) { | |
617 | switch (*(filter_opcode_t *) pc) { | |
618 | case FILTER_OP_UNKNOWN: | |
619 | default: | |
620 | ERR("unknown bytecode op %u\n", | |
621 | (unsigned int) *(filter_opcode_t *) pc); | |
622 | ret = -EINVAL; | |
623 | goto end; | |
624 | ||
625 | case FILTER_OP_RETURN: | |
93c591bb MD |
626 | if (vstack_ax(stack)->type == REG_S64) |
627 | *(filter_opcode_t *) pc = FILTER_OP_RETURN_S64; | |
628 | ret = 0; | |
629 | goto end; | |
630 | ||
631 | case FILTER_OP_RETURN_S64: | |
632 | if (vstack_ax(stack)->type != REG_S64) { | |
633 | ERR("Unexpected register type\n"); | |
634 | ret = -EINVAL; | |
635 | goto end; | |
636 | } | |
97b58163 MD |
637 | ret = 0; |
638 | goto end; | |
639 | ||
640 | /* binary */ | |
641 | case FILTER_OP_MUL: | |
642 | case FILTER_OP_DIV: | |
643 | case FILTER_OP_MOD: | |
644 | case FILTER_OP_PLUS: | |
645 | case FILTER_OP_MINUS: | |
97b58163 MD |
646 | ERR("unsupported bytecode op %u\n", |
647 | (unsigned int) *(filter_opcode_t *) pc); | |
648 | ret = -EINVAL; | |
649 | goto end; | |
650 | ||
651 | case FILTER_OP_EQ: | |
652 | { | |
653 | struct binary_op *insn = (struct binary_op *) pc; | |
654 | ||
0305960f | 655 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
656 | default: |
657 | ERR("unknown register type\n"); | |
658 | ret = -EINVAL; | |
659 | goto end; | |
660 | ||
661 | case REG_STRING: | |
53569322 MD |
662 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
663 | break; | |
3151a51d PP |
664 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
665 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
666 | else | |
667 | insn->op = FILTER_OP_EQ_STRING; | |
668 | break; | |
669 | case REG_STAR_GLOB_STRING: | |
670 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
671 | break; | |
672 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
97b58163 MD |
673 | break; |
674 | case REG_S64: | |
53569322 MD |
675 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
676 | break; | |
0305960f | 677 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
678 | insn->op = FILTER_OP_EQ_S64; |
679 | else | |
dbea82ec | 680 | insn->op = FILTER_OP_EQ_DOUBLE_S64; |
97b58163 MD |
681 | break; |
682 | case REG_DOUBLE: | |
53569322 MD |
683 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
684 | break; | |
dbea82ec MD |
685 | if (vstack_bx(stack)->type == REG_S64) |
686 | insn->op = FILTER_OP_EQ_S64_DOUBLE; | |
687 | else | |
688 | insn->op = FILTER_OP_EQ_DOUBLE; | |
97b58163 | 689 | break; |
53569322 MD |
690 | case REG_UNKNOWN: |
691 | break; /* Dynamic typing. */ | |
97b58163 | 692 | } |
0305960f MD |
693 | /* Pop 2, push 1 */ |
694 | if (vstack_pop(stack)) { | |
695 | ret = -EINVAL; | |
696 | goto end; | |
697 | } | |
698 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
699 | next_pc += sizeof(struct binary_op); |
700 | break; | |
701 | } | |
702 | ||
703 | case FILTER_OP_NE: | |
704 | { | |
705 | struct binary_op *insn = (struct binary_op *) pc; | |
706 | ||
0305960f | 707 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
708 | default: |
709 | ERR("unknown register type\n"); | |
710 | ret = -EINVAL; | |
711 | goto end; | |
712 | ||
713 | case REG_STRING: | |
53569322 MD |
714 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
715 | break; | |
3151a51d PP |
716 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
717 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
718 | else | |
719 | insn->op = FILTER_OP_NE_STRING; | |
720 | break; | |
721 | case REG_STAR_GLOB_STRING: | |
722 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
723 | break; | |
724 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
97b58163 MD |
725 | break; |
726 | case REG_S64: | |
53569322 MD |
727 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
728 | break; | |
0305960f | 729 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
730 | insn->op = FILTER_OP_NE_S64; |
731 | else | |
dbea82ec | 732 | insn->op = FILTER_OP_NE_DOUBLE_S64; |
97b58163 MD |
733 | break; |
734 | case REG_DOUBLE: | |
53569322 MD |
735 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
736 | break; | |
dbea82ec MD |
737 | if (vstack_bx(stack)->type == REG_S64) |
738 | insn->op = FILTER_OP_NE_S64_DOUBLE; | |
739 | else | |
740 | insn->op = FILTER_OP_NE_DOUBLE; | |
97b58163 | 741 | break; |
53569322 MD |
742 | case REG_UNKNOWN: |
743 | break; /* Dynamic typing. */ | |
97b58163 | 744 | } |
0305960f MD |
745 | /* Pop 2, push 1 */ |
746 | if (vstack_pop(stack)) { | |
747 | ret = -EINVAL; | |
748 | goto end; | |
749 | } | |
750 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
751 | next_pc += sizeof(struct binary_op); |
752 | break; | |
753 | } | |
754 | ||
755 | case FILTER_OP_GT: | |
756 | { | |
757 | struct binary_op *insn = (struct binary_op *) pc; | |
758 | ||
0305960f | 759 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
760 | default: |
761 | ERR("unknown register type\n"); | |
762 | ret = -EINVAL; | |
763 | goto end; | |
764 | ||
3151a51d PP |
765 | case REG_STAR_GLOB_STRING: |
766 | ERR("invalid register type for > binary operator\n"); | |
767 | ret = -EINVAL; | |
768 | goto end; | |
97b58163 | 769 | case REG_STRING: |
53569322 MD |
770 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
771 | break; | |
97b58163 MD |
772 | insn->op = FILTER_OP_GT_STRING; |
773 | break; | |
774 | case REG_S64: | |
53569322 MD |
775 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
776 | break; | |
0305960f | 777 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
778 | insn->op = FILTER_OP_GT_S64; |
779 | else | |
dbea82ec | 780 | insn->op = FILTER_OP_GT_DOUBLE_S64; |
97b58163 MD |
781 | break; |
782 | case REG_DOUBLE: | |
53569322 MD |
783 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
784 | break; | |
dbea82ec MD |
785 | if (vstack_bx(stack)->type == REG_S64) |
786 | insn->op = FILTER_OP_GT_S64_DOUBLE; | |
787 | else | |
788 | insn->op = FILTER_OP_GT_DOUBLE; | |
97b58163 | 789 | break; |
53569322 MD |
790 | case REG_UNKNOWN: |
791 | break; /* Dynamic typing. */ | |
97b58163 | 792 | } |
0305960f MD |
793 | /* Pop 2, push 1 */ |
794 | if (vstack_pop(stack)) { | |
795 | ret = -EINVAL; | |
796 | goto end; | |
797 | } | |
798 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
799 | next_pc += sizeof(struct binary_op); |
800 | break; | |
801 | } | |
802 | ||
803 | case FILTER_OP_LT: | |
804 | { | |
805 | struct binary_op *insn = (struct binary_op *) pc; | |
806 | ||
0305960f | 807 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
808 | default: |
809 | ERR("unknown register type\n"); | |
810 | ret = -EINVAL; | |
811 | goto end; | |
812 | ||
3151a51d PP |
813 | case REG_STAR_GLOB_STRING: |
814 | ERR("invalid register type for < binary operator\n"); | |
815 | ret = -EINVAL; | |
816 | goto end; | |
97b58163 | 817 | case REG_STRING: |
53569322 MD |
818 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
819 | break; | |
97b58163 MD |
820 | insn->op = FILTER_OP_LT_STRING; |
821 | break; | |
822 | case REG_S64: | |
53569322 MD |
823 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
824 | break; | |
0305960f | 825 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
826 | insn->op = FILTER_OP_LT_S64; |
827 | else | |
dbea82ec | 828 | insn->op = FILTER_OP_LT_DOUBLE_S64; |
97b58163 MD |
829 | break; |
830 | case REG_DOUBLE: | |
53569322 MD |
831 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
832 | break; | |
dbea82ec MD |
833 | if (vstack_bx(stack)->type == REG_S64) |
834 | insn->op = FILTER_OP_LT_S64_DOUBLE; | |
835 | else | |
836 | insn->op = FILTER_OP_LT_DOUBLE; | |
97b58163 | 837 | break; |
53569322 MD |
838 | case REG_UNKNOWN: |
839 | break; /* Dynamic typing. */ | |
97b58163 | 840 | } |
0305960f MD |
841 | /* Pop 2, push 1 */ |
842 | if (vstack_pop(stack)) { | |
843 | ret = -EINVAL; | |
844 | goto end; | |
845 | } | |
846 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
847 | next_pc += sizeof(struct binary_op); |
848 | break; | |
849 | } | |
850 | ||
851 | case FILTER_OP_GE: | |
852 | { | |
853 | struct binary_op *insn = (struct binary_op *) pc; | |
854 | ||
0305960f | 855 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
856 | default: |
857 | ERR("unknown register type\n"); | |
858 | ret = -EINVAL; | |
859 | goto end; | |
860 | ||
3151a51d PP |
861 | case REG_STAR_GLOB_STRING: |
862 | ERR("invalid register type for >= binary operator\n"); | |
863 | ret = -EINVAL; | |
864 | goto end; | |
97b58163 | 865 | case REG_STRING: |
53569322 MD |
866 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
867 | break; | |
97b58163 MD |
868 | insn->op = FILTER_OP_GE_STRING; |
869 | break; | |
870 | case REG_S64: | |
53569322 MD |
871 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
872 | break; | |
0305960f | 873 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
874 | insn->op = FILTER_OP_GE_S64; |
875 | else | |
dbea82ec | 876 | insn->op = FILTER_OP_GE_DOUBLE_S64; |
97b58163 MD |
877 | break; |
878 | case REG_DOUBLE: | |
53569322 MD |
879 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
880 | break; | |
dbea82ec MD |
881 | if (vstack_bx(stack)->type == REG_S64) |
882 | insn->op = FILTER_OP_GE_S64_DOUBLE; | |
883 | else | |
884 | insn->op = FILTER_OP_GE_DOUBLE; | |
97b58163 | 885 | break; |
53569322 MD |
886 | case REG_UNKNOWN: |
887 | break; /* Dynamic typing. */ | |
97b58163 | 888 | } |
0305960f MD |
889 | /* Pop 2, push 1 */ |
890 | if (vstack_pop(stack)) { | |
891 | ret = -EINVAL; | |
892 | goto end; | |
893 | } | |
894 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
895 | next_pc += sizeof(struct binary_op); |
896 | break; | |
897 | } | |
898 | case FILTER_OP_LE: | |
899 | { | |
900 | struct binary_op *insn = (struct binary_op *) pc; | |
901 | ||
0305960f | 902 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
903 | default: |
904 | ERR("unknown register type\n"); | |
905 | ret = -EINVAL; | |
906 | goto end; | |
907 | ||
3151a51d PP |
908 | case REG_STAR_GLOB_STRING: |
909 | ERR("invalid register type for <= binary operator\n"); | |
910 | ret = -EINVAL; | |
911 | goto end; | |
97b58163 | 912 | case REG_STRING: |
53569322 MD |
913 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
914 | break; | |
97b58163 MD |
915 | insn->op = FILTER_OP_LE_STRING; |
916 | break; | |
917 | case REG_S64: | |
53569322 MD |
918 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
919 | break; | |
0305960f | 920 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
921 | insn->op = FILTER_OP_LE_S64; |
922 | else | |
dbea82ec | 923 | insn->op = FILTER_OP_LE_DOUBLE_S64; |
97b58163 MD |
924 | break; |
925 | case REG_DOUBLE: | |
53569322 MD |
926 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
927 | break; | |
dbea82ec MD |
928 | if (vstack_bx(stack)->type == REG_S64) |
929 | insn->op = FILTER_OP_LE_S64_DOUBLE; | |
930 | else | |
931 | insn->op = FILTER_OP_LE_DOUBLE; | |
97b58163 | 932 | break; |
53569322 MD |
933 | case REG_UNKNOWN: |
934 | break; /* Dynamic typing. */ | |
97b58163 | 935 | } |
0305960f | 936 | vstack_ax(stack)->type = REG_S64; |
97b58163 MD |
937 | next_pc += sizeof(struct binary_op); |
938 | break; | |
939 | } | |
940 | ||
941 | case FILTER_OP_EQ_STRING: | |
942 | case FILTER_OP_NE_STRING: | |
943 | case FILTER_OP_GT_STRING: | |
944 | case FILTER_OP_LT_STRING: | |
945 | case FILTER_OP_GE_STRING: | |
946 | case FILTER_OP_LE_STRING: | |
3151a51d PP |
947 | case FILTER_OP_EQ_STAR_GLOB_STRING: |
948 | case FILTER_OP_NE_STAR_GLOB_STRING: | |
97b58163 MD |
949 | case FILTER_OP_EQ_S64: |
950 | case FILTER_OP_NE_S64: | |
951 | case FILTER_OP_GT_S64: | |
952 | case FILTER_OP_LT_S64: | |
953 | case FILTER_OP_GE_S64: | |
954 | case FILTER_OP_LE_S64: | |
955 | case FILTER_OP_EQ_DOUBLE: | |
956 | case FILTER_OP_NE_DOUBLE: | |
957 | case FILTER_OP_GT_DOUBLE: | |
958 | case FILTER_OP_LT_DOUBLE: | |
959 | case FILTER_OP_GE_DOUBLE: | |
960 | case FILTER_OP_LE_DOUBLE: | |
dbea82ec MD |
961 | case FILTER_OP_EQ_DOUBLE_S64: |
962 | case FILTER_OP_NE_DOUBLE_S64: | |
963 | case FILTER_OP_GT_DOUBLE_S64: | |
964 | case FILTER_OP_LT_DOUBLE_S64: | |
965 | case FILTER_OP_GE_DOUBLE_S64: | |
966 | case FILTER_OP_LE_DOUBLE_S64: | |
967 | case FILTER_OP_EQ_S64_DOUBLE: | |
968 | case FILTER_OP_NE_S64_DOUBLE: | |
969 | case FILTER_OP_GT_S64_DOUBLE: | |
970 | case FILTER_OP_LT_S64_DOUBLE: | |
971 | case FILTER_OP_GE_S64_DOUBLE: | |
972 | case FILTER_OP_LE_S64_DOUBLE: | |
0039e2d8 MD |
973 | case FILTER_OP_BIT_RSHIFT: |
974 | case FILTER_OP_BIT_LSHIFT: | |
47e5f13e MD |
975 | case FILTER_OP_BIT_AND: |
976 | case FILTER_OP_BIT_OR: | |
977 | case FILTER_OP_BIT_XOR: | |
97b58163 | 978 | { |
0305960f MD |
979 | /* Pop 2, push 1 */ |
980 | if (vstack_pop(stack)) { | |
981 | ret = -EINVAL; | |
982 | goto end; | |
983 | } | |
984 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
985 | next_pc += sizeof(struct binary_op); |
986 | break; | |
987 | } | |
988 | ||
989 | /* unary */ | |
990 | case FILTER_OP_UNARY_PLUS: | |
991 | { | |
992 | struct unary_op *insn = (struct unary_op *) pc; | |
993 | ||
0305960f | 994 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
995 | default: |
996 | ERR("unknown register type\n"); | |
997 | ret = -EINVAL; | |
998 | goto end; | |
999 | ||
1000 | case REG_S64: | |
1001 | insn->op = FILTER_OP_UNARY_PLUS_S64; | |
1002 | break; | |
1003 | case REG_DOUBLE: | |
1004 | insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; | |
1005 | break; | |
53569322 MD |
1006 | case REG_UNKNOWN: /* Dynamic typing. */ |
1007 | break; | |
97b58163 | 1008 | } |
0305960f | 1009 | /* Pop 1, push 1 */ |
97b58163 MD |
1010 | next_pc += sizeof(struct unary_op); |
1011 | break; | |
1012 | } | |
1013 | ||
1014 | case FILTER_OP_UNARY_MINUS: | |
1015 | { | |
1016 | struct unary_op *insn = (struct unary_op *) pc; | |
1017 | ||
0305960f | 1018 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1019 | default: |
1020 | ERR("unknown register type\n"); | |
1021 | ret = -EINVAL; | |
1022 | goto end; | |
1023 | ||
1024 | case REG_S64: | |
1025 | insn->op = FILTER_OP_UNARY_MINUS_S64; | |
1026 | break; | |
1027 | case REG_DOUBLE: | |
1028 | insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; | |
1029 | break; | |
53569322 MD |
1030 | case REG_UNKNOWN: /* Dynamic typing. */ |
1031 | break; | |
97b58163 | 1032 | } |
0305960f | 1033 | /* Pop 1, push 1 */ |
97b58163 MD |
1034 | next_pc += sizeof(struct unary_op); |
1035 | break; | |
1036 | } | |
1037 | ||
1038 | case FILTER_OP_UNARY_NOT: | |
1039 | { | |
1040 | struct unary_op *insn = (struct unary_op *) pc; | |
1041 | ||
0305960f | 1042 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1043 | default: |
1044 | ERR("unknown register type\n"); | |
1045 | ret = -EINVAL; | |
1046 | goto end; | |
1047 | ||
1048 | case REG_S64: | |
1049 | insn->op = FILTER_OP_UNARY_NOT_S64; | |
1050 | break; | |
1051 | case REG_DOUBLE: | |
1052 | insn->op = FILTER_OP_UNARY_NOT_DOUBLE; | |
1053 | break; | |
53569322 MD |
1054 | case REG_UNKNOWN: /* Dynamic typing. */ |
1055 | break; | |
97b58163 | 1056 | } |
0305960f | 1057 | /* Pop 1, push 1 */ |
97b58163 MD |
1058 | next_pc += sizeof(struct unary_op); |
1059 | break; | |
1060 | } | |
1061 | ||
0039e2d8 MD |
1062 | case FILTER_OP_UNARY_BIT_NOT: |
1063 | { | |
1064 | /* Pop 1, push 1 */ | |
1065 | next_pc += sizeof(struct unary_op); | |
1066 | break; | |
1067 | } | |
1068 | ||
97b58163 MD |
1069 | case FILTER_OP_UNARY_PLUS_S64: |
1070 | case FILTER_OP_UNARY_MINUS_S64: | |
1071 | case FILTER_OP_UNARY_NOT_S64: | |
1072 | case FILTER_OP_UNARY_PLUS_DOUBLE: | |
1073 | case FILTER_OP_UNARY_MINUS_DOUBLE: | |
1074 | case FILTER_OP_UNARY_NOT_DOUBLE: | |
1075 | { | |
0305960f | 1076 | /* Pop 1, push 1 */ |
97b58163 MD |
1077 | next_pc += sizeof(struct unary_op); |
1078 | break; | |
1079 | } | |
1080 | ||
1081 | /* logical */ | |
1082 | case FILTER_OP_AND: | |
1083 | case FILTER_OP_OR: | |
1084 | { | |
b9f4cd79 MD |
1085 | /* Continue to next instruction */ |
1086 | /* Pop 1 when jump not taken */ | |
1087 | if (vstack_pop(stack)) { | |
1088 | ret = -EINVAL; | |
1089 | goto end; | |
1090 | } | |
97b58163 MD |
1091 | next_pc += sizeof(struct logical_op); |
1092 | break; | |
1093 | } | |
1094 | ||
77aa5901 | 1095 | /* load field ref */ |
97b58163 MD |
1096 | case FILTER_OP_LOAD_FIELD_REF: |
1097 | { | |
1098 | ERR("Unknown field ref type\n"); | |
1099 | ret = -EINVAL; | |
1100 | goto end; | |
1101 | } | |
77aa5901 MD |
1102 | /* get context ref */ |
1103 | case FILTER_OP_GET_CONTEXT_REF: | |
1104 | { | |
53569322 MD |
1105 | if (vstack_push(stack)) { |
1106 | ret = -EINVAL; | |
1107 | goto end; | |
1108 | } | |
1109 | vstack_ax(stack)->type = REG_UNKNOWN; | |
1110 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1111 | break; | |
77aa5901 | 1112 | } |
97b58163 MD |
1113 | case FILTER_OP_LOAD_FIELD_REF_STRING: |
1114 | case FILTER_OP_LOAD_FIELD_REF_SEQUENCE: | |
77aa5901 | 1115 | case FILTER_OP_GET_CONTEXT_REF_STRING: |
97b58163 | 1116 | { |
0305960f MD |
1117 | if (vstack_push(stack)) { |
1118 | ret = -EINVAL; | |
1119 | goto end; | |
1120 | } | |
1121 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
1122 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1123 | break; | |
1124 | } | |
1125 | case FILTER_OP_LOAD_FIELD_REF_S64: | |
77aa5901 | 1126 | case FILTER_OP_GET_CONTEXT_REF_S64: |
97b58163 | 1127 | { |
0305960f MD |
1128 | if (vstack_push(stack)) { |
1129 | ret = -EINVAL; | |
1130 | goto end; | |
1131 | } | |
1132 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1133 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1134 | break; | |
1135 | } | |
1136 | case FILTER_OP_LOAD_FIELD_REF_DOUBLE: | |
77aa5901 | 1137 | case FILTER_OP_GET_CONTEXT_REF_DOUBLE: |
97b58163 | 1138 | { |
0305960f MD |
1139 | if (vstack_push(stack)) { |
1140 | ret = -EINVAL; | |
1141 | goto end; | |
1142 | } | |
1143 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
1144 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1145 | break; | |
1146 | } | |
1147 | ||
77aa5901 | 1148 | /* load from immediate operand */ |
97b58163 MD |
1149 | case FILTER_OP_LOAD_STRING: |
1150 | { | |
1151 | struct load_op *insn = (struct load_op *) pc; | |
1152 | ||
0305960f MD |
1153 | if (vstack_push(stack)) { |
1154 | ret = -EINVAL; | |
1155 | goto end; | |
1156 | } | |
1157 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
1158 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
1159 | break; | |
1160 | } | |
1161 | ||
3151a51d PP |
1162 | case FILTER_OP_LOAD_STAR_GLOB_STRING: |
1163 | { | |
1164 | struct load_op *insn = (struct load_op *) pc; | |
1165 | ||
1166 | if (vstack_push(stack)) { | |
1167 | ret = -EINVAL; | |
1168 | goto end; | |
1169 | } | |
1170 | vstack_ax(stack)->type = REG_STAR_GLOB_STRING; | |
1171 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
1172 | break; | |
1173 | } | |
1174 | ||
97b58163 MD |
1175 | case FILTER_OP_LOAD_S64: |
1176 | { | |
0305960f MD |
1177 | if (vstack_push(stack)) { |
1178 | ret = -EINVAL; | |
1179 | goto end; | |
1180 | } | |
1181 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1182 | next_pc += sizeof(struct load_op) |
1183 | + sizeof(struct literal_numeric); | |
1184 | break; | |
1185 | } | |
1186 | ||
1187 | case FILTER_OP_LOAD_DOUBLE: | |
1188 | { | |
0305960f MD |
1189 | if (vstack_push(stack)) { |
1190 | ret = -EINVAL; | |
1191 | goto end; | |
1192 | } | |
1193 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
1194 | next_pc += sizeof(struct load_op) |
1195 | + sizeof(struct literal_double); | |
1196 | break; | |
1197 | } | |
1198 | ||
1199 | /* cast */ | |
1200 | case FILTER_OP_CAST_TO_S64: | |
1201 | { | |
1202 | struct cast_op *insn = (struct cast_op *) pc; | |
1203 | ||
0305960f | 1204 | switch (vstack_ax(stack)->type) { |
97b58163 MD |
1205 | default: |
1206 | ERR("unknown register type\n"); | |
1207 | ret = -EINVAL; | |
1208 | goto end; | |
1209 | ||
1210 | case REG_STRING: | |
3151a51d | 1211 | case REG_STAR_GLOB_STRING: |
97b58163 MD |
1212 | ERR("Cast op can only be applied to numeric or floating point registers\n"); |
1213 | ret = -EINVAL; | |
1214 | goto end; | |
1215 | case REG_S64: | |
1216 | insn->op = FILTER_OP_CAST_NOP; | |
1217 | break; | |
1218 | case REG_DOUBLE: | |
1219 | insn->op = FILTER_OP_CAST_DOUBLE_TO_S64; | |
1220 | break; | |
53569322 MD |
1221 | case REG_UNKNOWN: |
1222 | break; | |
97b58163 | 1223 | } |
0305960f MD |
1224 | /* Pop 1, push 1 */ |
1225 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1226 | next_pc += sizeof(struct cast_op); |
1227 | break; | |
1228 | } | |
1229 | case FILTER_OP_CAST_DOUBLE_TO_S64: | |
1230 | { | |
0305960f MD |
1231 | /* Pop 1, push 1 */ |
1232 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1233 | next_pc += sizeof(struct cast_op); |
1234 | break; | |
1235 | } | |
1236 | case FILTER_OP_CAST_NOP: | |
1237 | { | |
1238 | next_pc += sizeof(struct cast_op); | |
1239 | break; | |
1240 | } | |
1241 | ||
47e5f13e MD |
1242 | /* |
1243 | * Instructions for recursive traversal through composed types. | |
1244 | */ | |
1245 | case FILTER_OP_GET_CONTEXT_ROOT: | |
1246 | { | |
1247 | if (vstack_push(stack)) { | |
1248 | ret = -EINVAL; | |
1249 | goto end; | |
1250 | } | |
1251 | vstack_ax(stack)->type = REG_PTR; | |
1252 | vstack_ax(stack)->load.type = LOAD_ROOT_CONTEXT; | |
1253 | next_pc += sizeof(struct load_op); | |
1254 | break; | |
1255 | } | |
1256 | case FILTER_OP_GET_APP_CONTEXT_ROOT: | |
1257 | { | |
1258 | if (vstack_push(stack)) { | |
1259 | ret = -EINVAL; | |
1260 | goto end; | |
1261 | } | |
1262 | vstack_ax(stack)->type = REG_PTR; | |
1263 | vstack_ax(stack)->load.type = LOAD_ROOT_APP_CONTEXT; | |
1264 | next_pc += sizeof(struct load_op); | |
1265 | break; | |
1266 | } | |
1267 | case FILTER_OP_GET_PAYLOAD_ROOT: | |
1268 | { | |
1269 | if (vstack_push(stack)) { | |
1270 | ret = -EINVAL; | |
1271 | goto end; | |
1272 | } | |
1273 | vstack_ax(stack)->type = REG_PTR; | |
1274 | vstack_ax(stack)->load.type = LOAD_ROOT_PAYLOAD; | |
1275 | next_pc += sizeof(struct load_op); | |
1276 | break; | |
1277 | } | |
1278 | ||
1279 | case FILTER_OP_LOAD_FIELD: | |
1280 | { | |
1281 | struct load_op *insn = (struct load_op *) pc; | |
1282 | ||
1283 | assert(vstack_ax(stack)->type == REG_PTR); | |
1284 | /* Pop 1, push 1 */ | |
1285 | ret = specialize_load_field(vstack_ax(stack), insn); | |
1286 | if (ret) | |
1287 | goto end; | |
1288 | ||
1289 | next_pc += sizeof(struct load_op); | |
1290 | break; | |
1291 | } | |
1292 | ||
1293 | case FILTER_OP_LOAD_FIELD_S8: | |
1294 | case FILTER_OP_LOAD_FIELD_S16: | |
1295 | case FILTER_OP_LOAD_FIELD_S32: | |
1296 | case FILTER_OP_LOAD_FIELD_S64: | |
1297 | case FILTER_OP_LOAD_FIELD_U8: | |
1298 | case FILTER_OP_LOAD_FIELD_U16: | |
1299 | case FILTER_OP_LOAD_FIELD_U32: | |
1300 | case FILTER_OP_LOAD_FIELD_U64: | |
1301 | { | |
1302 | /* Pop 1, push 1 */ | |
1303 | vstack_ax(stack)->type = REG_S64; | |
1304 | next_pc += sizeof(struct load_op); | |
1305 | break; | |
1306 | } | |
1307 | ||
1308 | case FILTER_OP_LOAD_FIELD_STRING: | |
1309 | case FILTER_OP_LOAD_FIELD_SEQUENCE: | |
1310 | { | |
1311 | /* Pop 1, push 1 */ | |
1312 | vstack_ax(stack)->type = REG_STRING; | |
1313 | next_pc += sizeof(struct load_op); | |
1314 | break; | |
1315 | } | |
1316 | ||
1317 | case FILTER_OP_LOAD_FIELD_DOUBLE: | |
1318 | { | |
1319 | /* Pop 1, push 1 */ | |
1320 | vstack_ax(stack)->type = REG_DOUBLE; | |
1321 | next_pc += sizeof(struct load_op); | |
1322 | break; | |
1323 | } | |
1324 | ||
1325 | case FILTER_OP_GET_SYMBOL: | |
1326 | { | |
1327 | struct load_op *insn = (struct load_op *) pc; | |
1328 | ||
1329 | dbg_printf("op get symbol\n"); | |
1330 | switch (vstack_ax(stack)->load.type) { | |
1331 | case LOAD_OBJECT: | |
1332 | ERR("Nested fields not implemented yet."); | |
1333 | ret = -EINVAL; | |
1334 | goto end; | |
1335 | case LOAD_ROOT_CONTEXT: | |
1336 | /* Lookup context field. */ | |
1337 | ret = specialize_context_lookup(session, | |
1338 | bytecode, insn, | |
1339 | &vstack_ax(stack)->load); | |
1340 | if (ret) | |
1341 | goto end; | |
1342 | break; | |
1343 | case LOAD_ROOT_APP_CONTEXT: | |
1344 | /* Lookup app context field. */ | |
1345 | ret = specialize_app_context_lookup(session, | |
1346 | bytecode, insn, | |
1347 | &vstack_ax(stack)->load); | |
1348 | if (ret) | |
1349 | goto end; | |
1350 | break; | |
1351 | case LOAD_ROOT_PAYLOAD: | |
1352 | /* Lookup event payload field. */ | |
1353 | ret = specialize_event_payload_lookup(event, | |
1354 | bytecode, insn, | |
1355 | &vstack_ax(stack)->load); | |
1356 | if (ret) | |
1357 | goto end; | |
1358 | break; | |
1359 | } | |
1360 | next_pc += sizeof(struct load_op) + sizeof(struct get_symbol); | |
1361 | break; | |
1362 | } | |
1363 | ||
1364 | case FILTER_OP_GET_SYMBOL_FIELD: | |
1365 | { | |
1366 | /* Always generated by specialize phase. */ | |
1367 | ret = -EINVAL; | |
1368 | goto end; | |
1369 | } | |
1370 | ||
1371 | case FILTER_OP_GET_INDEX_U16: | |
1372 | { | |
1373 | struct load_op *insn = (struct load_op *) pc; | |
1374 | struct get_index_u16 *index = (struct get_index_u16 *) insn->data; | |
1375 | ||
1376 | dbg_printf("op get index u16\n"); | |
1377 | /* Pop 1, push 1 */ | |
1378 | ret = specialize_get_index(bytecode, insn, index->index, | |
1379 | vstack_ax(stack), sizeof(*index)); | |
1380 | if (ret) | |
1381 | goto end; | |
1382 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16); | |
1383 | break; | |
1384 | } | |
1385 | ||
1386 | case FILTER_OP_GET_INDEX_U64: | |
1387 | { | |
1388 | struct load_op *insn = (struct load_op *) pc; | |
1389 | struct get_index_u64 *index = (struct get_index_u64 *) insn->data; | |
1390 | ||
1391 | dbg_printf("op get index u64\n"); | |
1392 | /* Pop 1, push 1 */ | |
1393 | ret = specialize_get_index(bytecode, insn, index->index, | |
1394 | vstack_ax(stack), sizeof(*index)); | |
1395 | if (ret) | |
1396 | goto end; | |
1397 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64); | |
1398 | break; | |
1399 | } | |
1400 | ||
97b58163 MD |
1401 | } |
1402 | } | |
1403 | end: | |
1404 | return ret; | |
1405 | } |