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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 | 28 | #include <stddef.h> |
fb31eb73 | 29 | #include <stdint.h> |
b4051ad8 | 30 | |
97b58163 | 31 | #include "lttng-filter.h" |
47e5f13e | 32 | #include <lttng/align.h> |
97b58163 | 33 | |
47e5f13e MD |
34 | static int lttng_fls(int val) |
35 | { | |
36 | int r = 32; | |
37 | unsigned int x = (unsigned int) val; | |
38 | ||
39 | if (!x) | |
40 | return 0; | |
41 | if (!(x & 0xFFFF0000U)) { | |
42 | x <<= 16; | |
43 | r -= 16; | |
44 | } | |
45 | if (!(x & 0xFF000000U)) { | |
46 | x <<= 8; | |
47 | r -= 8; | |
48 | } | |
49 | if (!(x & 0xF0000000U)) { | |
50 | x <<= 4; | |
51 | r -= 4; | |
52 | } | |
53 | if (!(x & 0xC0000000U)) { | |
54 | x <<= 2; | |
55 | r -= 2; | |
56 | } | |
57 | if (!(x & 0x80000000U)) { | |
58 | r -= 1; | |
59 | } | |
60 | return r; | |
61 | } | |
62 | ||
63 | static int get_count_order(unsigned int count) | |
64 | { | |
65 | int order; | |
66 | ||
67 | order = lttng_fls(count) - 1; | |
68 | if (count & (count - 1)) | |
69 | order++; | |
70 | return order; | |
71 | } | |
72 | ||
73 | static ssize_t bytecode_reserve_data(struct bytecode_runtime *runtime, | |
74 | size_t align, size_t len) | |
75 | { | |
76 | ssize_t ret; | |
77 | size_t padding = offset_align(runtime->data_len, align); | |
78 | size_t new_len = runtime->data_len + padding + len; | |
79 | size_t new_alloc_len = new_len; | |
80 | size_t old_alloc_len = runtime->data_alloc_len; | |
81 | ||
82 | if (new_len > FILTER_MAX_DATA_LEN) | |
83 | return -EINVAL; | |
84 | ||
85 | if (new_alloc_len > old_alloc_len) { | |
86 | char *newptr; | |
87 | ||
88 | new_alloc_len = | |
89 | max_t(size_t, 1U << get_count_order(new_alloc_len), old_alloc_len << 1); | |
90 | newptr = realloc(runtime->data, new_alloc_len); | |
91 | if (!newptr) | |
92 | return -ENOMEM; | |
93 | runtime->data = newptr; | |
94 | /* We zero directly the memory from start of allocation. */ | |
95 | memset(&runtime->data[old_alloc_len], 0, new_alloc_len - old_alloc_len); | |
96 | runtime->data_alloc_len = new_alloc_len; | |
97 | } | |
98 | runtime->data_len += padding; | |
99 | ret = runtime->data_len; | |
100 | runtime->data_len += len; | |
101 | return ret; | |
102 | } | |
103 | ||
104 | static ssize_t bytecode_push_data(struct bytecode_runtime *runtime, | |
105 | const void *p, size_t align, size_t len) | |
106 | { | |
107 | ssize_t offset; | |
108 | ||
109 | offset = bytecode_reserve_data(runtime, align, len); | |
110 | if (offset < 0) | |
111 | return -ENOMEM; | |
112 | memcpy(&runtime->data[offset], p, len); | |
113 | return offset; | |
114 | } | |
115 | ||
116 | static int specialize_load_field(struct vstack_entry *stack_top, | |
117 | struct load_op *insn) | |
118 | { | |
119 | int ret; | |
120 | ||
121 | switch (stack_top->load.type) { | |
122 | case LOAD_OBJECT: | |
123 | break; | |
124 | case LOAD_ROOT_CONTEXT: | |
125 | case LOAD_ROOT_APP_CONTEXT: | |
126 | case LOAD_ROOT_PAYLOAD: | |
127 | default: | |
128 | dbg_printf("Filter warning: cannot load root, missing field name.\n"); | |
129 | ret = -EINVAL; | |
130 | goto end; | |
131 | } | |
132 | switch (stack_top->load.object_type) { | |
133 | case OBJECT_TYPE_S8: | |
134 | dbg_printf("op load field s8\n"); | |
135 | stack_top->type = REG_S64; | |
136 | if (!stack_top->load.rev_bo) | |
137 | insn->op = FILTER_OP_LOAD_FIELD_S8; | |
138 | break; | |
139 | case OBJECT_TYPE_S16: | |
140 | dbg_printf("op load field s16\n"); | |
141 | stack_top->type = REG_S64; | |
142 | if (!stack_top->load.rev_bo) | |
143 | insn->op = FILTER_OP_LOAD_FIELD_S16; | |
144 | break; | |
145 | case OBJECT_TYPE_S32: | |
146 | dbg_printf("op load field s32\n"); | |
147 | stack_top->type = REG_S64; | |
148 | if (!stack_top->load.rev_bo) | |
149 | insn->op = FILTER_OP_LOAD_FIELD_S32; | |
150 | break; | |
151 | case OBJECT_TYPE_S64: | |
152 | dbg_printf("op load field s64\n"); | |
153 | stack_top->type = REG_S64; | |
154 | if (!stack_top->load.rev_bo) | |
155 | insn->op = FILTER_OP_LOAD_FIELD_S64; | |
156 | break; | |
157 | case OBJECT_TYPE_U8: | |
158 | dbg_printf("op load field u8\n"); | |
159 | stack_top->type = REG_S64; | |
160 | insn->op = FILTER_OP_LOAD_FIELD_U8; | |
161 | break; | |
162 | case OBJECT_TYPE_U16: | |
163 | dbg_printf("op load field u16\n"); | |
164 | stack_top->type = REG_S64; | |
165 | if (!stack_top->load.rev_bo) | |
166 | insn->op = FILTER_OP_LOAD_FIELD_U16; | |
167 | break; | |
168 | case OBJECT_TYPE_U32: | |
169 | dbg_printf("op load field u32\n"); | |
170 | stack_top->type = REG_S64; | |
171 | if (!stack_top->load.rev_bo) | |
172 | insn->op = FILTER_OP_LOAD_FIELD_U32; | |
173 | break; | |
174 | case OBJECT_TYPE_U64: | |
175 | dbg_printf("op load field u64\n"); | |
176 | stack_top->type = REG_S64; | |
177 | if (!stack_top->load.rev_bo) | |
178 | insn->op = FILTER_OP_LOAD_FIELD_U64; | |
179 | break; | |
180 | case OBJECT_TYPE_DOUBLE: | |
181 | stack_top->type = REG_DOUBLE; | |
182 | insn->op = FILTER_OP_LOAD_FIELD_DOUBLE; | |
183 | break; | |
184 | case OBJECT_TYPE_STRING: | |
185 | dbg_printf("op load field string\n"); | |
186 | stack_top->type = REG_STRING; | |
187 | insn->op = FILTER_OP_LOAD_FIELD_STRING; | |
188 | break; | |
189 | case OBJECT_TYPE_STRING_SEQUENCE: | |
190 | dbg_printf("op load field string sequence\n"); | |
191 | stack_top->type = REG_STRING; | |
192 | insn->op = FILTER_OP_LOAD_FIELD_SEQUENCE; | |
193 | break; | |
194 | case OBJECT_TYPE_DYNAMIC: | |
195 | dbg_printf("op load field dynamic\n"); | |
196 | stack_top->type = REG_UNKNOWN; | |
197 | /* Don't specialize load op. */ | |
198 | break; | |
199 | case OBJECT_TYPE_SEQUENCE: | |
200 | case OBJECT_TYPE_ARRAY: | |
201 | case OBJECT_TYPE_STRUCT: | |
202 | case OBJECT_TYPE_VARIANT: | |
203 | ERR("Sequences, arrays, struct and variant cannot be loaded (nested types)."); | |
204 | ret = -EINVAL; | |
205 | goto end; | |
206 | } | |
207 | return 0; | |
208 | ||
209 | end: | |
210 | return ret; | |
211 | } | |
212 | ||
213 | static int specialize_get_index_object_type(enum object_type *otype, | |
214 | int signedness, uint32_t elem_len) | |
215 | { | |
216 | switch (elem_len) { | |
217 | case 8: | |
218 | if (signedness) | |
219 | *otype = OBJECT_TYPE_S8; | |
220 | else | |
221 | *otype = OBJECT_TYPE_U8; | |
222 | break; | |
223 | case 16: | |
224 | if (signedness) | |
225 | *otype = OBJECT_TYPE_S16; | |
226 | else | |
227 | *otype = OBJECT_TYPE_U16; | |
228 | break; | |
229 | case 32: | |
230 | if (signedness) | |
231 | *otype = OBJECT_TYPE_S32; | |
232 | else | |
233 | *otype = OBJECT_TYPE_U32; | |
234 | break; | |
235 | case 64: | |
236 | if (signedness) | |
237 | *otype = OBJECT_TYPE_S64; | |
238 | else | |
239 | *otype = OBJECT_TYPE_U64; | |
240 | break; | |
241 | default: | |
242 | return -EINVAL; | |
243 | } | |
244 | return 0; | |
245 | } | |
246 | ||
247 | static int specialize_get_index(struct bytecode_runtime *runtime, | |
248 | struct load_op *insn, uint64_t index, | |
249 | struct vstack_entry *stack_top, | |
250 | int idx_len) | |
251 | { | |
252 | int ret; | |
253 | struct filter_get_index_data gid; | |
254 | ssize_t data_offset; | |
255 | ||
256 | memset(&gid, 0, sizeof(gid)); | |
257 | switch (stack_top->load.type) { | |
258 | case LOAD_OBJECT: | |
259 | switch (stack_top->load.object_type) { | |
260 | case OBJECT_TYPE_ARRAY: | |
261 | { | |
262 | const struct lttng_event_field *field; | |
263 | uint32_t elem_len, num_elems; | |
264 | int signedness; | |
265 | ||
266 | field = stack_top->load.field; | |
267 | elem_len = field->type.u.array.elem_type.u.basic.integer.size; | |
268 | signedness = field->type.u.array.elem_type.u.basic.integer.signedness; | |
269 | num_elems = field->type.u.array.length; | |
270 | if (index >= num_elems) { | |
271 | ret = -EINVAL; | |
272 | goto end; | |
273 | } | |
274 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
275 | signedness, elem_len); | |
276 | if (ret) | |
277 | goto end; | |
278 | gid.offset = index * (elem_len / CHAR_BIT); | |
279 | gid.array_len = num_elems * (elem_len / CHAR_BIT); | |
280 | gid.elem.type = stack_top->load.object_type; | |
281 | gid.elem.len = elem_len; | |
282 | if (field->type.u.array.elem_type.u.basic.integer.reverse_byte_order) | |
283 | gid.elem.rev_bo = true; | |
284 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
285 | break; | |
286 | } | |
287 | case OBJECT_TYPE_SEQUENCE: | |
288 | { | |
289 | const struct lttng_event_field *field; | |
290 | uint32_t elem_len; | |
291 | int signedness; | |
292 | ||
293 | field = stack_top->load.field; | |
294 | elem_len = field->type.u.sequence.elem_type.u.basic.integer.size; | |
295 | signedness = field->type.u.sequence.elem_type.u.basic.integer.signedness; | |
296 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
297 | signedness, elem_len); | |
298 | if (ret) | |
299 | goto end; | |
300 | gid.offset = index * (elem_len / CHAR_BIT); | |
301 | gid.elem.type = stack_top->load.object_type; | |
302 | gid.elem.len = elem_len; | |
303 | if (field->type.u.sequence.elem_type.u.basic.integer.reverse_byte_order) | |
304 | gid.elem.rev_bo = true; | |
305 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
306 | break; | |
307 | } | |
308 | case OBJECT_TYPE_STRUCT: | |
309 | /* Only generated by the specialize phase. */ | |
310 | case OBJECT_TYPE_VARIANT: /* Fall-through */ | |
311 | default: | |
312 | ERR("Unexpected get index type %d", | |
313 | (int) stack_top->load.object_type); | |
314 | ret = -EINVAL; | |
315 | goto end; | |
316 | } | |
317 | break; | |
318 | case LOAD_ROOT_CONTEXT: | |
319 | case LOAD_ROOT_APP_CONTEXT: | |
320 | case LOAD_ROOT_PAYLOAD: | |
321 | ERR("Index lookup for root field not implemented yet."); | |
322 | ret = -EINVAL; | |
323 | goto end; | |
324 | } | |
325 | data_offset = bytecode_push_data(runtime, &gid, | |
326 | __alignof__(gid), sizeof(gid)); | |
327 | if (data_offset < 0) { | |
328 | ret = -EINVAL; | |
329 | goto end; | |
330 | } | |
331 | switch (idx_len) { | |
332 | case 2: | |
333 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
334 | break; | |
335 | case 8: | |
336 | ((struct get_index_u64 *) insn->data)->index = data_offset; | |
337 | break; | |
338 | default: | |
339 | ret = -EINVAL; | |
340 | goto end; | |
341 | } | |
342 | ||
343 | return 0; | |
344 | ||
345 | end: | |
346 | return ret; | |
347 | } | |
348 | ||
349 | static int specialize_context_lookup_name(struct lttng_ctx *ctx, | |
350 | struct bytecode_runtime *bytecode, | |
351 | struct load_op *insn) | |
352 | { | |
353 | uint16_t offset; | |
354 | const char *name; | |
355 | ||
356 | offset = ((struct get_symbol *) insn->data)->offset; | |
357 | name = bytecode->p.bc->bc.data + bytecode->p.bc->bc.reloc_offset + offset; | |
358 | return lttng_get_context_index(ctx, name); | |
359 | } | |
360 | ||
361 | static int specialize_load_object(const struct lttng_event_field *field, | |
362 | struct vstack_load *load, bool is_context) | |
363 | { | |
364 | load->type = LOAD_OBJECT; | |
365 | /* | |
366 | * LTTng-UST layout all integer fields as s64 on the stack for the filter. | |
367 | */ | |
368 | switch (field->type.atype) { | |
369 | case atype_integer: | |
370 | if (field->type.u.basic.integer.signedness) | |
371 | load->object_type = OBJECT_TYPE_S64; | |
372 | else | |
373 | load->object_type = OBJECT_TYPE_U64; | |
374 | load->rev_bo = false; | |
375 | break; | |
376 | case atype_enum: | |
377 | { | |
378 | const struct lttng_integer_type *itype = | |
379 | &field->type.u.basic.enumeration.container_type; | |
380 | ||
381 | if (itype->signedness) | |
382 | load->object_type = OBJECT_TYPE_S64; | |
383 | else | |
384 | load->object_type = OBJECT_TYPE_U64; | |
385 | load->rev_bo = false; | |
386 | break; | |
387 | } | |
388 | case atype_array: | |
389 | if (field->type.u.array.elem_type.atype != atype_integer) { | |
390 | ERR("Array nesting only supports integer types."); | |
391 | return -EINVAL; | |
392 | } | |
393 | if (is_context) { | |
394 | load->object_type = OBJECT_TYPE_STRING; | |
395 | } else { | |
396 | if (field->type.u.array.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
397 | load->object_type = OBJECT_TYPE_ARRAY; | |
398 | load->field = field; | |
399 | } else { | |
400 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
401 | } | |
402 | } | |
403 | break; | |
404 | case atype_sequence: | |
405 | if (field->type.u.sequence.elem_type.atype != atype_integer) { | |
406 | ERR("Sequence nesting only supports integer types."); | |
407 | return -EINVAL; | |
408 | } | |
409 | if (is_context) { | |
410 | load->object_type = OBJECT_TYPE_STRING; | |
411 | } else { | |
412 | if (field->type.u.sequence.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
413 | load->object_type = OBJECT_TYPE_SEQUENCE; | |
414 | load->field = field; | |
415 | } else { | |
416 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
417 | } | |
418 | } | |
419 | break; | |
420 | case atype_string: | |
421 | load->object_type = OBJECT_TYPE_STRING; | |
422 | break; | |
423 | case atype_float: | |
424 | load->object_type = OBJECT_TYPE_DOUBLE; | |
425 | break; | |
426 | case atype_dynamic: | |
427 | load->object_type = OBJECT_TYPE_DYNAMIC; | |
8d3190bd | 428 | break; |
47e5f13e MD |
429 | case atype_struct: |
430 | ERR("Structure type cannot be loaded."); | |
431 | return -EINVAL; | |
432 | default: | |
433 | ERR("Unknown type: %d", (int) field->type.atype); | |
434 | return -EINVAL; | |
435 | } | |
436 | return 0; | |
437 | } | |
438 | ||
439 | static int specialize_context_lookup(struct lttng_session *session, | |
440 | struct bytecode_runtime *runtime, | |
441 | struct load_op *insn, | |
442 | struct vstack_load *load) | |
443 | { | |
444 | int idx, ret; | |
445 | struct lttng_ctx_field *ctx_field; | |
446 | struct lttng_event_field *field; | |
447 | struct filter_get_index_data gid; | |
448 | ssize_t data_offset; | |
449 | ||
450 | idx = specialize_context_lookup_name(session->ctx, runtime, insn); | |
451 | if (idx < 0) { | |
452 | return -ENOENT; | |
453 | } | |
454 | ctx_field = &session->ctx->fields[idx]; | |
455 | field = &ctx_field->event_field; | |
456 | ret = specialize_load_object(field, load, true); | |
457 | if (ret) | |
458 | return ret; | |
459 | /* Specialize each get_symbol into a get_index. */ | |
460 | insn->op = FILTER_OP_GET_INDEX_U16; | |
461 | memset(&gid, 0, sizeof(gid)); | |
462 | gid.ctx_index = idx; | |
463 | gid.elem.type = load->object_type; | |
464 | data_offset = bytecode_push_data(runtime, &gid, | |
465 | __alignof__(gid), sizeof(gid)); | |
466 | if (data_offset < 0) { | |
467 | return -EINVAL; | |
468 | } | |
469 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
470 | return 0; | |
471 | } | |
472 | ||
473 | static int specialize_app_context_lookup(struct lttng_session *session, | |
474 | struct bytecode_runtime *runtime, | |
475 | struct load_op *insn, | |
476 | struct vstack_load *load) | |
477 | { | |
478 | uint16_t offset; | |
479 | const char *orig_name; | |
480 | char *name = NULL; | |
481 | int idx, ret; | |
482 | struct lttng_ctx_field *ctx_field; | |
483 | struct lttng_event_field *field; | |
484 | struct filter_get_index_data gid; | |
485 | ssize_t data_offset; | |
486 | ||
487 | offset = ((struct get_symbol *) insn->data)->offset; | |
488 | orig_name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
489 | name = zmalloc(strlen(orig_name) + strlen("$app.") + 1); | |
490 | if (!name) { | |
491 | ret = -ENOMEM; | |
492 | goto end; | |
493 | } | |
494 | strcpy(name, "$app."); | |
495 | strcat(name, orig_name); | |
496 | idx = lttng_get_context_index(session->ctx, name); | |
497 | if (idx < 0) { | |
498 | assert(lttng_context_is_app(name)); | |
499 | ret = lttng_ust_add_app_context_to_ctx_rcu(name, | |
500 | &session->ctx); | |
501 | if (ret) | |
502 | return ret; | |
503 | idx = lttng_get_context_index(session->ctx, | |
504 | name); | |
505 | if (idx < 0) | |
506 | return -ENOENT; | |
507 | } | |
508 | ctx_field = &session->ctx->fields[idx]; | |
509 | field = &ctx_field->event_field; | |
510 | ret = specialize_load_object(field, load, true); | |
511 | if (ret) | |
512 | goto end; | |
513 | /* Specialize each get_symbol into a get_index. */ | |
514 | insn->op = FILTER_OP_GET_INDEX_U16; | |
515 | memset(&gid, 0, sizeof(gid)); | |
516 | gid.ctx_index = idx; | |
517 | gid.elem.type = load->object_type; | |
518 | data_offset = bytecode_push_data(runtime, &gid, | |
519 | __alignof__(gid), sizeof(gid)); | |
520 | if (data_offset < 0) { | |
521 | ret = -EINVAL; | |
522 | goto end; | |
523 | } | |
524 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
525 | ret = 0; | |
526 | end: | |
527 | free(name); | |
528 | return ret; | |
529 | } | |
530 | ||
531 | static int specialize_event_payload_lookup(struct lttng_event *event, | |
532 | struct bytecode_runtime *runtime, | |
533 | struct load_op *insn, | |
534 | struct vstack_load *load) | |
535 | { | |
536 | const char *name; | |
537 | uint16_t offset; | |
538 | const struct lttng_event_desc *desc = event->desc; | |
539 | unsigned int i, nr_fields; | |
540 | bool found = false; | |
541 | uint32_t field_offset = 0; | |
542 | const struct lttng_event_field *field; | |
543 | int ret; | |
544 | struct filter_get_index_data gid; | |
545 | ssize_t data_offset; | |
546 | ||
547 | nr_fields = desc->nr_fields; | |
548 | offset = ((struct get_symbol *) insn->data)->offset; | |
549 | name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
550 | for (i = 0; i < nr_fields; i++) { | |
551 | field = &desc->fields[i]; | |
552 | if (!strcmp(field->name, name)) { | |
553 | found = true; | |
554 | break; | |
555 | } | |
556 | /* compute field offset on stack */ | |
557 | switch (field->type.atype) { | |
558 | case atype_integer: | |
559 | case atype_enum: | |
560 | field_offset += sizeof(int64_t); | |
561 | break; | |
562 | case atype_array: | |
563 | case atype_sequence: | |
564 | field_offset += sizeof(unsigned long); | |
565 | field_offset += sizeof(void *); | |
566 | break; | |
567 | case atype_string: | |
568 | field_offset += sizeof(void *); | |
569 | break; | |
570 | case atype_float: | |
571 | field_offset += sizeof(double); | |
572 | break; | |
573 | default: | |
574 | ret = -EINVAL; | |
575 | goto end; | |
576 | } | |
577 | } | |
578 | if (!found) { | |
579 | ret = -EINVAL; | |
580 | goto end; | |
581 | } | |
582 | ||
583 | ret = specialize_load_object(field, load, false); | |
584 | if (ret) | |
585 | goto end; | |
586 | ||
587 | /* Specialize each get_symbol into a get_index. */ | |
588 | insn->op = FILTER_OP_GET_INDEX_U16; | |
589 | memset(&gid, 0, sizeof(gid)); | |
590 | gid.offset = field_offset; | |
591 | gid.elem.type = load->object_type; | |
592 | data_offset = bytecode_push_data(runtime, &gid, | |
593 | __alignof__(gid), sizeof(gid)); | |
594 | if (data_offset < 0) { | |
595 | ret = -EINVAL; | |
596 | goto end; | |
597 | } | |
598 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
599 | ret = 0; | |
600 | end: | |
601 | return ret; | |
602 | } | |
603 | ||
604 | int lttng_filter_specialize_bytecode(struct lttng_event *event, | |
605 | struct bytecode_runtime *bytecode) | |
97b58163 MD |
606 | { |
607 | void *pc, *next_pc, *start_pc; | |
608 | int ret = -EINVAL; | |
0305960f MD |
609 | struct vstack _stack; |
610 | struct vstack *stack = &_stack; | |
47e5f13e | 611 | struct lttng_session *session = bytecode->p.session; |
97b58163 | 612 | |
0305960f | 613 | vstack_init(stack); |
97b58163 | 614 | |
47e5f13e | 615 | start_pc = &bytecode->code[0]; |
97b58163 MD |
616 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; |
617 | pc = next_pc) { | |
618 | switch (*(filter_opcode_t *) pc) { | |
619 | case FILTER_OP_UNKNOWN: | |
620 | default: | |
621 | ERR("unknown bytecode op %u\n", | |
622 | (unsigned int) *(filter_opcode_t *) pc); | |
623 | ret = -EINVAL; | |
624 | goto end; | |
625 | ||
626 | case FILTER_OP_RETURN: | |
93c591bb MD |
627 | if (vstack_ax(stack)->type == REG_S64) |
628 | *(filter_opcode_t *) pc = FILTER_OP_RETURN_S64; | |
629 | ret = 0; | |
630 | goto end; | |
631 | ||
632 | case FILTER_OP_RETURN_S64: | |
633 | if (vstack_ax(stack)->type != REG_S64) { | |
634 | ERR("Unexpected register type\n"); | |
635 | ret = -EINVAL; | |
636 | goto end; | |
637 | } | |
97b58163 MD |
638 | ret = 0; |
639 | goto end; | |
640 | ||
641 | /* binary */ | |
642 | case FILTER_OP_MUL: | |
643 | case FILTER_OP_DIV: | |
644 | case FILTER_OP_MOD: | |
645 | case FILTER_OP_PLUS: | |
646 | case FILTER_OP_MINUS: | |
97b58163 MD |
647 | ERR("unsupported bytecode op %u\n", |
648 | (unsigned int) *(filter_opcode_t *) pc); | |
649 | ret = -EINVAL; | |
650 | goto end; | |
651 | ||
652 | case FILTER_OP_EQ: | |
653 | { | |
654 | struct binary_op *insn = (struct binary_op *) pc; | |
655 | ||
0305960f | 656 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
657 | default: |
658 | ERR("unknown register type\n"); | |
659 | ret = -EINVAL; | |
660 | goto end; | |
661 | ||
662 | case REG_STRING: | |
53569322 MD |
663 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
664 | break; | |
3151a51d PP |
665 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
666 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
667 | else | |
668 | insn->op = FILTER_OP_EQ_STRING; | |
669 | break; | |
670 | case REG_STAR_GLOB_STRING: | |
671 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
672 | break; | |
673 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
97b58163 MD |
674 | break; |
675 | case REG_S64: | |
53569322 MD |
676 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
677 | break; | |
0305960f | 678 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
679 | insn->op = FILTER_OP_EQ_S64; |
680 | else | |
dbea82ec | 681 | insn->op = FILTER_OP_EQ_DOUBLE_S64; |
97b58163 MD |
682 | break; |
683 | case REG_DOUBLE: | |
53569322 MD |
684 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
685 | break; | |
dbea82ec MD |
686 | if (vstack_bx(stack)->type == REG_S64) |
687 | insn->op = FILTER_OP_EQ_S64_DOUBLE; | |
688 | else | |
689 | insn->op = FILTER_OP_EQ_DOUBLE; | |
97b58163 | 690 | break; |
53569322 MD |
691 | case REG_UNKNOWN: |
692 | break; /* Dynamic typing. */ | |
97b58163 | 693 | } |
0305960f MD |
694 | /* Pop 2, push 1 */ |
695 | if (vstack_pop(stack)) { | |
696 | ret = -EINVAL; | |
697 | goto end; | |
698 | } | |
699 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
700 | next_pc += sizeof(struct binary_op); |
701 | break; | |
702 | } | |
703 | ||
704 | case FILTER_OP_NE: | |
705 | { | |
706 | struct binary_op *insn = (struct binary_op *) pc; | |
707 | ||
0305960f | 708 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
709 | default: |
710 | ERR("unknown register type\n"); | |
711 | ret = -EINVAL; | |
712 | goto end; | |
713 | ||
714 | case REG_STRING: | |
53569322 MD |
715 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
716 | break; | |
3151a51d PP |
717 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
718 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
719 | else | |
720 | insn->op = FILTER_OP_NE_STRING; | |
721 | break; | |
722 | case REG_STAR_GLOB_STRING: | |
723 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
724 | break; | |
725 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
97b58163 MD |
726 | break; |
727 | case REG_S64: | |
53569322 MD |
728 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
729 | break; | |
0305960f | 730 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
731 | insn->op = FILTER_OP_NE_S64; |
732 | else | |
dbea82ec | 733 | insn->op = FILTER_OP_NE_DOUBLE_S64; |
97b58163 MD |
734 | break; |
735 | case REG_DOUBLE: | |
53569322 MD |
736 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
737 | break; | |
dbea82ec MD |
738 | if (vstack_bx(stack)->type == REG_S64) |
739 | insn->op = FILTER_OP_NE_S64_DOUBLE; | |
740 | else | |
741 | insn->op = FILTER_OP_NE_DOUBLE; | |
97b58163 | 742 | break; |
53569322 MD |
743 | case REG_UNKNOWN: |
744 | break; /* Dynamic typing. */ | |
97b58163 | 745 | } |
0305960f MD |
746 | /* Pop 2, push 1 */ |
747 | if (vstack_pop(stack)) { | |
748 | ret = -EINVAL; | |
749 | goto end; | |
750 | } | |
751 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
752 | next_pc += sizeof(struct binary_op); |
753 | break; | |
754 | } | |
755 | ||
756 | case FILTER_OP_GT: | |
757 | { | |
758 | struct binary_op *insn = (struct binary_op *) pc; | |
759 | ||
0305960f | 760 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
761 | default: |
762 | ERR("unknown register type\n"); | |
763 | ret = -EINVAL; | |
764 | goto end; | |
765 | ||
3151a51d PP |
766 | case REG_STAR_GLOB_STRING: |
767 | ERR("invalid register type for > binary operator\n"); | |
768 | ret = -EINVAL; | |
769 | goto end; | |
97b58163 | 770 | case REG_STRING: |
53569322 MD |
771 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
772 | break; | |
97b58163 MD |
773 | insn->op = FILTER_OP_GT_STRING; |
774 | break; | |
775 | case REG_S64: | |
53569322 MD |
776 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
777 | break; | |
0305960f | 778 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
779 | insn->op = FILTER_OP_GT_S64; |
780 | else | |
dbea82ec | 781 | insn->op = FILTER_OP_GT_DOUBLE_S64; |
97b58163 MD |
782 | break; |
783 | case REG_DOUBLE: | |
53569322 MD |
784 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
785 | break; | |
dbea82ec MD |
786 | if (vstack_bx(stack)->type == REG_S64) |
787 | insn->op = FILTER_OP_GT_S64_DOUBLE; | |
788 | else | |
789 | insn->op = FILTER_OP_GT_DOUBLE; | |
97b58163 | 790 | break; |
53569322 MD |
791 | case REG_UNKNOWN: |
792 | break; /* Dynamic typing. */ | |
97b58163 | 793 | } |
0305960f MD |
794 | /* Pop 2, push 1 */ |
795 | if (vstack_pop(stack)) { | |
796 | ret = -EINVAL; | |
797 | goto end; | |
798 | } | |
799 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
800 | next_pc += sizeof(struct binary_op); |
801 | break; | |
802 | } | |
803 | ||
804 | case FILTER_OP_LT: | |
805 | { | |
806 | struct binary_op *insn = (struct binary_op *) pc; | |
807 | ||
0305960f | 808 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
809 | default: |
810 | ERR("unknown register type\n"); | |
811 | ret = -EINVAL; | |
812 | goto end; | |
813 | ||
3151a51d PP |
814 | case REG_STAR_GLOB_STRING: |
815 | ERR("invalid register type for < binary operator\n"); | |
816 | ret = -EINVAL; | |
817 | goto end; | |
97b58163 | 818 | case REG_STRING: |
53569322 MD |
819 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
820 | break; | |
97b58163 MD |
821 | insn->op = FILTER_OP_LT_STRING; |
822 | break; | |
823 | case REG_S64: | |
53569322 MD |
824 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
825 | break; | |
0305960f | 826 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
827 | insn->op = FILTER_OP_LT_S64; |
828 | else | |
dbea82ec | 829 | insn->op = FILTER_OP_LT_DOUBLE_S64; |
97b58163 MD |
830 | break; |
831 | case REG_DOUBLE: | |
53569322 MD |
832 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
833 | break; | |
dbea82ec MD |
834 | if (vstack_bx(stack)->type == REG_S64) |
835 | insn->op = FILTER_OP_LT_S64_DOUBLE; | |
836 | else | |
837 | insn->op = FILTER_OP_LT_DOUBLE; | |
97b58163 | 838 | break; |
53569322 MD |
839 | case REG_UNKNOWN: |
840 | break; /* Dynamic typing. */ | |
97b58163 | 841 | } |
0305960f MD |
842 | /* Pop 2, push 1 */ |
843 | if (vstack_pop(stack)) { | |
844 | ret = -EINVAL; | |
845 | goto end; | |
846 | } | |
847 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
848 | next_pc += sizeof(struct binary_op); |
849 | break; | |
850 | } | |
851 | ||
852 | case FILTER_OP_GE: | |
853 | { | |
854 | struct binary_op *insn = (struct binary_op *) pc; | |
855 | ||
0305960f | 856 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
857 | default: |
858 | ERR("unknown register type\n"); | |
859 | ret = -EINVAL; | |
860 | goto end; | |
861 | ||
3151a51d PP |
862 | case REG_STAR_GLOB_STRING: |
863 | ERR("invalid register type for >= binary operator\n"); | |
864 | ret = -EINVAL; | |
865 | goto end; | |
97b58163 | 866 | case REG_STRING: |
53569322 MD |
867 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
868 | break; | |
97b58163 MD |
869 | insn->op = FILTER_OP_GE_STRING; |
870 | break; | |
871 | case REG_S64: | |
53569322 MD |
872 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
873 | break; | |
0305960f | 874 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
875 | insn->op = FILTER_OP_GE_S64; |
876 | else | |
dbea82ec | 877 | insn->op = FILTER_OP_GE_DOUBLE_S64; |
97b58163 MD |
878 | break; |
879 | case REG_DOUBLE: | |
53569322 MD |
880 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
881 | break; | |
dbea82ec MD |
882 | if (vstack_bx(stack)->type == REG_S64) |
883 | insn->op = FILTER_OP_GE_S64_DOUBLE; | |
884 | else | |
885 | insn->op = FILTER_OP_GE_DOUBLE; | |
97b58163 | 886 | break; |
53569322 MD |
887 | case REG_UNKNOWN: |
888 | break; /* Dynamic typing. */ | |
97b58163 | 889 | } |
0305960f MD |
890 | /* Pop 2, push 1 */ |
891 | if (vstack_pop(stack)) { | |
892 | ret = -EINVAL; | |
893 | goto end; | |
894 | } | |
895 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
896 | next_pc += sizeof(struct binary_op); |
897 | break; | |
898 | } | |
899 | case FILTER_OP_LE: | |
900 | { | |
901 | struct binary_op *insn = (struct binary_op *) pc; | |
902 | ||
0305960f | 903 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
904 | default: |
905 | ERR("unknown register type\n"); | |
906 | ret = -EINVAL; | |
907 | goto end; | |
908 | ||
3151a51d PP |
909 | case REG_STAR_GLOB_STRING: |
910 | ERR("invalid register type for <= binary operator\n"); | |
911 | ret = -EINVAL; | |
912 | goto end; | |
97b58163 | 913 | case REG_STRING: |
53569322 MD |
914 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
915 | break; | |
97b58163 MD |
916 | insn->op = FILTER_OP_LE_STRING; |
917 | break; | |
918 | case REG_S64: | |
53569322 MD |
919 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
920 | break; | |
0305960f | 921 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
922 | insn->op = FILTER_OP_LE_S64; |
923 | else | |
dbea82ec | 924 | insn->op = FILTER_OP_LE_DOUBLE_S64; |
97b58163 MD |
925 | break; |
926 | case REG_DOUBLE: | |
53569322 MD |
927 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
928 | break; | |
dbea82ec MD |
929 | if (vstack_bx(stack)->type == REG_S64) |
930 | insn->op = FILTER_OP_LE_S64_DOUBLE; | |
931 | else | |
932 | insn->op = FILTER_OP_LE_DOUBLE; | |
97b58163 | 933 | break; |
53569322 MD |
934 | case REG_UNKNOWN: |
935 | break; /* Dynamic typing. */ | |
97b58163 | 936 | } |
0305960f | 937 | vstack_ax(stack)->type = REG_S64; |
97b58163 MD |
938 | next_pc += sizeof(struct binary_op); |
939 | break; | |
940 | } | |
941 | ||
942 | case FILTER_OP_EQ_STRING: | |
943 | case FILTER_OP_NE_STRING: | |
944 | case FILTER_OP_GT_STRING: | |
945 | case FILTER_OP_LT_STRING: | |
946 | case FILTER_OP_GE_STRING: | |
947 | case FILTER_OP_LE_STRING: | |
3151a51d PP |
948 | case FILTER_OP_EQ_STAR_GLOB_STRING: |
949 | case FILTER_OP_NE_STAR_GLOB_STRING: | |
97b58163 MD |
950 | case FILTER_OP_EQ_S64: |
951 | case FILTER_OP_NE_S64: | |
952 | case FILTER_OP_GT_S64: | |
953 | case FILTER_OP_LT_S64: | |
954 | case FILTER_OP_GE_S64: | |
955 | case FILTER_OP_LE_S64: | |
956 | case FILTER_OP_EQ_DOUBLE: | |
957 | case FILTER_OP_NE_DOUBLE: | |
958 | case FILTER_OP_GT_DOUBLE: | |
959 | case FILTER_OP_LT_DOUBLE: | |
960 | case FILTER_OP_GE_DOUBLE: | |
961 | case FILTER_OP_LE_DOUBLE: | |
dbea82ec MD |
962 | case FILTER_OP_EQ_DOUBLE_S64: |
963 | case FILTER_OP_NE_DOUBLE_S64: | |
964 | case FILTER_OP_GT_DOUBLE_S64: | |
965 | case FILTER_OP_LT_DOUBLE_S64: | |
966 | case FILTER_OP_GE_DOUBLE_S64: | |
967 | case FILTER_OP_LE_DOUBLE_S64: | |
968 | case FILTER_OP_EQ_S64_DOUBLE: | |
969 | case FILTER_OP_NE_S64_DOUBLE: | |
970 | case FILTER_OP_GT_S64_DOUBLE: | |
971 | case FILTER_OP_LT_S64_DOUBLE: | |
972 | case FILTER_OP_GE_S64_DOUBLE: | |
973 | case FILTER_OP_LE_S64_DOUBLE: | |
0039e2d8 MD |
974 | case FILTER_OP_BIT_RSHIFT: |
975 | case FILTER_OP_BIT_LSHIFT: | |
47e5f13e MD |
976 | case FILTER_OP_BIT_AND: |
977 | case FILTER_OP_BIT_OR: | |
978 | case FILTER_OP_BIT_XOR: | |
97b58163 | 979 | { |
0305960f MD |
980 | /* Pop 2, push 1 */ |
981 | if (vstack_pop(stack)) { | |
982 | ret = -EINVAL; | |
983 | goto end; | |
984 | } | |
985 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
986 | next_pc += sizeof(struct binary_op); |
987 | break; | |
988 | } | |
989 | ||
990 | /* unary */ | |
991 | case FILTER_OP_UNARY_PLUS: | |
992 | { | |
993 | struct unary_op *insn = (struct unary_op *) pc; | |
994 | ||
0305960f | 995 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
996 | default: |
997 | ERR("unknown register type\n"); | |
998 | ret = -EINVAL; | |
999 | goto end; | |
1000 | ||
1001 | case REG_S64: | |
1002 | insn->op = FILTER_OP_UNARY_PLUS_S64; | |
1003 | break; | |
1004 | case REG_DOUBLE: | |
1005 | insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; | |
1006 | break; | |
53569322 MD |
1007 | case REG_UNKNOWN: /* Dynamic typing. */ |
1008 | break; | |
97b58163 | 1009 | } |
0305960f | 1010 | /* Pop 1, push 1 */ |
97b58163 MD |
1011 | next_pc += sizeof(struct unary_op); |
1012 | break; | |
1013 | } | |
1014 | ||
1015 | case FILTER_OP_UNARY_MINUS: | |
1016 | { | |
1017 | struct unary_op *insn = (struct unary_op *) pc; | |
1018 | ||
0305960f | 1019 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1020 | default: |
1021 | ERR("unknown register type\n"); | |
1022 | ret = -EINVAL; | |
1023 | goto end; | |
1024 | ||
1025 | case REG_S64: | |
1026 | insn->op = FILTER_OP_UNARY_MINUS_S64; | |
1027 | break; | |
1028 | case REG_DOUBLE: | |
1029 | insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; | |
1030 | break; | |
53569322 MD |
1031 | case REG_UNKNOWN: /* Dynamic typing. */ |
1032 | break; | |
97b58163 | 1033 | } |
0305960f | 1034 | /* Pop 1, push 1 */ |
97b58163 MD |
1035 | next_pc += sizeof(struct unary_op); |
1036 | break; | |
1037 | } | |
1038 | ||
1039 | case FILTER_OP_UNARY_NOT: | |
1040 | { | |
1041 | struct unary_op *insn = (struct unary_op *) pc; | |
1042 | ||
0305960f | 1043 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1044 | default: |
1045 | ERR("unknown register type\n"); | |
1046 | ret = -EINVAL; | |
1047 | goto end; | |
1048 | ||
1049 | case REG_S64: | |
1050 | insn->op = FILTER_OP_UNARY_NOT_S64; | |
1051 | break; | |
1052 | case REG_DOUBLE: | |
1053 | insn->op = FILTER_OP_UNARY_NOT_DOUBLE; | |
1054 | break; | |
53569322 MD |
1055 | case REG_UNKNOWN: /* Dynamic typing. */ |
1056 | break; | |
97b58163 | 1057 | } |
0305960f | 1058 | /* Pop 1, push 1 */ |
97b58163 MD |
1059 | next_pc += sizeof(struct unary_op); |
1060 | break; | |
1061 | } | |
1062 | ||
0039e2d8 MD |
1063 | case FILTER_OP_UNARY_BIT_NOT: |
1064 | { | |
1065 | /* Pop 1, push 1 */ | |
1066 | next_pc += sizeof(struct unary_op); | |
1067 | break; | |
1068 | } | |
1069 | ||
97b58163 MD |
1070 | case FILTER_OP_UNARY_PLUS_S64: |
1071 | case FILTER_OP_UNARY_MINUS_S64: | |
1072 | case FILTER_OP_UNARY_NOT_S64: | |
1073 | case FILTER_OP_UNARY_PLUS_DOUBLE: | |
1074 | case FILTER_OP_UNARY_MINUS_DOUBLE: | |
1075 | case FILTER_OP_UNARY_NOT_DOUBLE: | |
1076 | { | |
0305960f | 1077 | /* Pop 1, push 1 */ |
97b58163 MD |
1078 | next_pc += sizeof(struct unary_op); |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | /* logical */ | |
1083 | case FILTER_OP_AND: | |
1084 | case FILTER_OP_OR: | |
1085 | { | |
b9f4cd79 MD |
1086 | /* Continue to next instruction */ |
1087 | /* Pop 1 when jump not taken */ | |
1088 | if (vstack_pop(stack)) { | |
1089 | ret = -EINVAL; | |
1090 | goto end; | |
1091 | } | |
97b58163 MD |
1092 | next_pc += sizeof(struct logical_op); |
1093 | break; | |
1094 | } | |
1095 | ||
77aa5901 | 1096 | /* load field ref */ |
97b58163 MD |
1097 | case FILTER_OP_LOAD_FIELD_REF: |
1098 | { | |
1099 | ERR("Unknown field ref type\n"); | |
1100 | ret = -EINVAL; | |
1101 | goto end; | |
1102 | } | |
77aa5901 MD |
1103 | /* get context ref */ |
1104 | case FILTER_OP_GET_CONTEXT_REF: | |
1105 | { | |
53569322 MD |
1106 | if (vstack_push(stack)) { |
1107 | ret = -EINVAL; | |
1108 | goto end; | |
1109 | } | |
1110 | vstack_ax(stack)->type = REG_UNKNOWN; | |
1111 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1112 | break; | |
77aa5901 | 1113 | } |
97b58163 MD |
1114 | case FILTER_OP_LOAD_FIELD_REF_STRING: |
1115 | case FILTER_OP_LOAD_FIELD_REF_SEQUENCE: | |
77aa5901 | 1116 | case FILTER_OP_GET_CONTEXT_REF_STRING: |
97b58163 | 1117 | { |
0305960f MD |
1118 | if (vstack_push(stack)) { |
1119 | ret = -EINVAL; | |
1120 | goto end; | |
1121 | } | |
1122 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
1123 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1124 | break; | |
1125 | } | |
1126 | case FILTER_OP_LOAD_FIELD_REF_S64: | |
77aa5901 | 1127 | case FILTER_OP_GET_CONTEXT_REF_S64: |
97b58163 | 1128 | { |
0305960f MD |
1129 | if (vstack_push(stack)) { |
1130 | ret = -EINVAL; | |
1131 | goto end; | |
1132 | } | |
1133 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1134 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1135 | break; | |
1136 | } | |
1137 | case FILTER_OP_LOAD_FIELD_REF_DOUBLE: | |
77aa5901 | 1138 | case FILTER_OP_GET_CONTEXT_REF_DOUBLE: |
97b58163 | 1139 | { |
0305960f MD |
1140 | if (vstack_push(stack)) { |
1141 | ret = -EINVAL; | |
1142 | goto end; | |
1143 | } | |
1144 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
1145 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1146 | break; | |
1147 | } | |
1148 | ||
77aa5901 | 1149 | /* load from immediate operand */ |
97b58163 MD |
1150 | case FILTER_OP_LOAD_STRING: |
1151 | { | |
1152 | struct load_op *insn = (struct load_op *) pc; | |
1153 | ||
0305960f MD |
1154 | if (vstack_push(stack)) { |
1155 | ret = -EINVAL; | |
1156 | goto end; | |
1157 | } | |
1158 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
1159 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
1160 | break; | |
1161 | } | |
1162 | ||
3151a51d PP |
1163 | case FILTER_OP_LOAD_STAR_GLOB_STRING: |
1164 | { | |
1165 | struct load_op *insn = (struct load_op *) pc; | |
1166 | ||
1167 | if (vstack_push(stack)) { | |
1168 | ret = -EINVAL; | |
1169 | goto end; | |
1170 | } | |
1171 | vstack_ax(stack)->type = REG_STAR_GLOB_STRING; | |
1172 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
1173 | break; | |
1174 | } | |
1175 | ||
97b58163 MD |
1176 | case FILTER_OP_LOAD_S64: |
1177 | { | |
0305960f MD |
1178 | if (vstack_push(stack)) { |
1179 | ret = -EINVAL; | |
1180 | goto end; | |
1181 | } | |
1182 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1183 | next_pc += sizeof(struct load_op) |
1184 | + sizeof(struct literal_numeric); | |
1185 | break; | |
1186 | } | |
1187 | ||
1188 | case FILTER_OP_LOAD_DOUBLE: | |
1189 | { | |
0305960f MD |
1190 | if (vstack_push(stack)) { |
1191 | ret = -EINVAL; | |
1192 | goto end; | |
1193 | } | |
1194 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
1195 | next_pc += sizeof(struct load_op) |
1196 | + sizeof(struct literal_double); | |
1197 | break; | |
1198 | } | |
1199 | ||
1200 | /* cast */ | |
1201 | case FILTER_OP_CAST_TO_S64: | |
1202 | { | |
1203 | struct cast_op *insn = (struct cast_op *) pc; | |
1204 | ||
0305960f | 1205 | switch (vstack_ax(stack)->type) { |
97b58163 MD |
1206 | default: |
1207 | ERR("unknown register type\n"); | |
1208 | ret = -EINVAL; | |
1209 | goto end; | |
1210 | ||
1211 | case REG_STRING: | |
3151a51d | 1212 | case REG_STAR_GLOB_STRING: |
97b58163 MD |
1213 | ERR("Cast op can only be applied to numeric or floating point registers\n"); |
1214 | ret = -EINVAL; | |
1215 | goto end; | |
1216 | case REG_S64: | |
1217 | insn->op = FILTER_OP_CAST_NOP; | |
1218 | break; | |
1219 | case REG_DOUBLE: | |
1220 | insn->op = FILTER_OP_CAST_DOUBLE_TO_S64; | |
1221 | break; | |
53569322 MD |
1222 | case REG_UNKNOWN: |
1223 | break; | |
97b58163 | 1224 | } |
0305960f MD |
1225 | /* Pop 1, push 1 */ |
1226 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1227 | next_pc += sizeof(struct cast_op); |
1228 | break; | |
1229 | } | |
1230 | case FILTER_OP_CAST_DOUBLE_TO_S64: | |
1231 | { | |
0305960f MD |
1232 | /* Pop 1, push 1 */ |
1233 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1234 | next_pc += sizeof(struct cast_op); |
1235 | break; | |
1236 | } | |
1237 | case FILTER_OP_CAST_NOP: | |
1238 | { | |
1239 | next_pc += sizeof(struct cast_op); | |
1240 | break; | |
1241 | } | |
1242 | ||
47e5f13e MD |
1243 | /* |
1244 | * Instructions for recursive traversal through composed types. | |
1245 | */ | |
1246 | case FILTER_OP_GET_CONTEXT_ROOT: | |
1247 | { | |
1248 | if (vstack_push(stack)) { | |
1249 | ret = -EINVAL; | |
1250 | goto end; | |
1251 | } | |
1252 | vstack_ax(stack)->type = REG_PTR; | |
1253 | vstack_ax(stack)->load.type = LOAD_ROOT_CONTEXT; | |
1254 | next_pc += sizeof(struct load_op); | |
1255 | break; | |
1256 | } | |
1257 | case FILTER_OP_GET_APP_CONTEXT_ROOT: | |
1258 | { | |
1259 | if (vstack_push(stack)) { | |
1260 | ret = -EINVAL; | |
1261 | goto end; | |
1262 | } | |
1263 | vstack_ax(stack)->type = REG_PTR; | |
1264 | vstack_ax(stack)->load.type = LOAD_ROOT_APP_CONTEXT; | |
1265 | next_pc += sizeof(struct load_op); | |
1266 | break; | |
1267 | } | |
1268 | case FILTER_OP_GET_PAYLOAD_ROOT: | |
1269 | { | |
1270 | if (vstack_push(stack)) { | |
1271 | ret = -EINVAL; | |
1272 | goto end; | |
1273 | } | |
1274 | vstack_ax(stack)->type = REG_PTR; | |
1275 | vstack_ax(stack)->load.type = LOAD_ROOT_PAYLOAD; | |
1276 | next_pc += sizeof(struct load_op); | |
1277 | break; | |
1278 | } | |
1279 | ||
1280 | case FILTER_OP_LOAD_FIELD: | |
1281 | { | |
1282 | struct load_op *insn = (struct load_op *) pc; | |
1283 | ||
1284 | assert(vstack_ax(stack)->type == REG_PTR); | |
1285 | /* Pop 1, push 1 */ | |
1286 | ret = specialize_load_field(vstack_ax(stack), insn); | |
1287 | if (ret) | |
1288 | goto end; | |
1289 | ||
1290 | next_pc += sizeof(struct load_op); | |
1291 | break; | |
1292 | } | |
1293 | ||
1294 | case FILTER_OP_LOAD_FIELD_S8: | |
1295 | case FILTER_OP_LOAD_FIELD_S16: | |
1296 | case FILTER_OP_LOAD_FIELD_S32: | |
1297 | case FILTER_OP_LOAD_FIELD_S64: | |
1298 | case FILTER_OP_LOAD_FIELD_U8: | |
1299 | case FILTER_OP_LOAD_FIELD_U16: | |
1300 | case FILTER_OP_LOAD_FIELD_U32: | |
1301 | case FILTER_OP_LOAD_FIELD_U64: | |
1302 | { | |
1303 | /* Pop 1, push 1 */ | |
1304 | vstack_ax(stack)->type = REG_S64; | |
1305 | next_pc += sizeof(struct load_op); | |
1306 | break; | |
1307 | } | |
1308 | ||
1309 | case FILTER_OP_LOAD_FIELD_STRING: | |
1310 | case FILTER_OP_LOAD_FIELD_SEQUENCE: | |
1311 | { | |
1312 | /* Pop 1, push 1 */ | |
1313 | vstack_ax(stack)->type = REG_STRING; | |
1314 | next_pc += sizeof(struct load_op); | |
1315 | break; | |
1316 | } | |
1317 | ||
1318 | case FILTER_OP_LOAD_FIELD_DOUBLE: | |
1319 | { | |
1320 | /* Pop 1, push 1 */ | |
1321 | vstack_ax(stack)->type = REG_DOUBLE; | |
1322 | next_pc += sizeof(struct load_op); | |
1323 | break; | |
1324 | } | |
1325 | ||
1326 | case FILTER_OP_GET_SYMBOL: | |
1327 | { | |
1328 | struct load_op *insn = (struct load_op *) pc; | |
1329 | ||
1330 | dbg_printf("op get symbol\n"); | |
1331 | switch (vstack_ax(stack)->load.type) { | |
1332 | case LOAD_OBJECT: | |
1333 | ERR("Nested fields not implemented yet."); | |
1334 | ret = -EINVAL; | |
1335 | goto end; | |
1336 | case LOAD_ROOT_CONTEXT: | |
1337 | /* Lookup context field. */ | |
1338 | ret = specialize_context_lookup(session, | |
1339 | bytecode, insn, | |
1340 | &vstack_ax(stack)->load); | |
1341 | if (ret) | |
1342 | goto end; | |
1343 | break; | |
1344 | case LOAD_ROOT_APP_CONTEXT: | |
1345 | /* Lookup app context field. */ | |
1346 | ret = specialize_app_context_lookup(session, | |
1347 | bytecode, insn, | |
1348 | &vstack_ax(stack)->load); | |
1349 | if (ret) | |
1350 | goto end; | |
1351 | break; | |
1352 | case LOAD_ROOT_PAYLOAD: | |
1353 | /* Lookup event payload field. */ | |
1354 | ret = specialize_event_payload_lookup(event, | |
1355 | bytecode, insn, | |
1356 | &vstack_ax(stack)->load); | |
1357 | if (ret) | |
1358 | goto end; | |
1359 | break; | |
1360 | } | |
1361 | next_pc += sizeof(struct load_op) + sizeof(struct get_symbol); | |
1362 | break; | |
1363 | } | |
1364 | ||
1365 | case FILTER_OP_GET_SYMBOL_FIELD: | |
1366 | { | |
1367 | /* Always generated by specialize phase. */ | |
1368 | ret = -EINVAL; | |
1369 | goto end; | |
1370 | } | |
1371 | ||
1372 | case FILTER_OP_GET_INDEX_U16: | |
1373 | { | |
1374 | struct load_op *insn = (struct load_op *) pc; | |
1375 | struct get_index_u16 *index = (struct get_index_u16 *) insn->data; | |
1376 | ||
1377 | dbg_printf("op get index u16\n"); | |
1378 | /* Pop 1, push 1 */ | |
1379 | ret = specialize_get_index(bytecode, insn, index->index, | |
1380 | vstack_ax(stack), sizeof(*index)); | |
1381 | if (ret) | |
1382 | goto end; | |
1383 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16); | |
1384 | break; | |
1385 | } | |
1386 | ||
1387 | case FILTER_OP_GET_INDEX_U64: | |
1388 | { | |
1389 | struct load_op *insn = (struct load_op *) pc; | |
1390 | struct get_index_u64 *index = (struct get_index_u64 *) insn->data; | |
1391 | ||
1392 | dbg_printf("op get index u64\n"); | |
1393 | /* Pop 1, push 1 */ | |
1394 | ret = specialize_get_index(bytecode, insn, index->index, | |
1395 | vstack_ax(stack), sizeof(*index)); | |
1396 | if (ret) | |
1397 | goto end; | |
1398 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64); | |
1399 | break; | |
1400 | } | |
1401 | ||
97b58163 MD |
1402 | } |
1403 | } | |
1404 | end: | |
1405 | return ret; | |
1406 | } |