Commit | Line | Data |
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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 | { | |
218deb69 | 262 | const struct lttng_integer_type *integer_type; |
47e5f13e MD |
263 | const struct lttng_event_field *field; |
264 | uint32_t elem_len, num_elems; | |
265 | int signedness; | |
266 | ||
267 | field = stack_top->load.field; | |
218deb69 MD |
268 | switch (field->type.atype) { |
269 | case atype_array: | |
270 | integer_type = &field->type.u.legacy.array.elem_type.u.basic.integer; | |
271 | num_elems = field->type.u.legacy.array.length; | |
272 | break; | |
273 | case atype_array_nestable: | |
274 | if (field->type.u.array_nestable.elem_type->atype != atype_integer) { | |
275 | ret = -EINVAL; | |
276 | goto end; | |
277 | } | |
278 | integer_type = &field->type.u.array_nestable.elem_type->u.integer; | |
279 | num_elems = field->type.u.array_nestable.length; | |
280 | break; | |
281 | default: | |
282 | ret = -EINVAL; | |
283 | goto end; | |
284 | } | |
285 | elem_len = integer_type->size; | |
286 | signedness = integer_type->signedness; | |
47e5f13e MD |
287 | if (index >= num_elems) { |
288 | ret = -EINVAL; | |
289 | goto end; | |
290 | } | |
291 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
292 | signedness, elem_len); | |
293 | if (ret) | |
294 | goto end; | |
295 | gid.offset = index * (elem_len / CHAR_BIT); | |
296 | gid.array_len = num_elems * (elem_len / CHAR_BIT); | |
297 | gid.elem.type = stack_top->load.object_type; | |
298 | gid.elem.len = elem_len; | |
218deb69 | 299 | if (integer_type->reverse_byte_order) |
47e5f13e MD |
300 | gid.elem.rev_bo = true; |
301 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
302 | break; | |
303 | } | |
304 | case OBJECT_TYPE_SEQUENCE: | |
305 | { | |
218deb69 | 306 | const struct lttng_integer_type *integer_type; |
47e5f13e MD |
307 | const struct lttng_event_field *field; |
308 | uint32_t elem_len; | |
309 | int signedness; | |
310 | ||
311 | field = stack_top->load.field; | |
218deb69 MD |
312 | switch (field->type.atype) { |
313 | case atype_sequence: | |
314 | integer_type = &field->type.u.legacy.sequence.elem_type.u.basic.integer; | |
315 | break; | |
316 | case atype_sequence_nestable: | |
317 | if (field->type.u.sequence_nestable.elem_type->atype != atype_integer) { | |
318 | ret = -EINVAL; | |
319 | goto end; | |
320 | } | |
321 | integer_type = &field->type.u.sequence_nestable.elem_type->u.integer; | |
322 | break; | |
323 | default: | |
324 | ret = -EINVAL; | |
325 | goto end; | |
326 | } | |
327 | elem_len = integer_type->size; | |
328 | signedness = integer_type->signedness; | |
47e5f13e MD |
329 | ret = specialize_get_index_object_type(&stack_top->load.object_type, |
330 | signedness, elem_len); | |
331 | if (ret) | |
332 | goto end; | |
333 | gid.offset = index * (elem_len / CHAR_BIT); | |
334 | gid.elem.type = stack_top->load.object_type; | |
335 | gid.elem.len = elem_len; | |
218deb69 | 336 | if (integer_type->reverse_byte_order) |
47e5f13e MD |
337 | gid.elem.rev_bo = true; |
338 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
339 | break; | |
340 | } | |
341 | case OBJECT_TYPE_STRUCT: | |
342 | /* Only generated by the specialize phase. */ | |
343 | case OBJECT_TYPE_VARIANT: /* Fall-through */ | |
344 | default: | |
345 | ERR("Unexpected get index type %d", | |
346 | (int) stack_top->load.object_type); | |
347 | ret = -EINVAL; | |
348 | goto end; | |
349 | } | |
350 | break; | |
351 | case LOAD_ROOT_CONTEXT: | |
352 | case LOAD_ROOT_APP_CONTEXT: | |
353 | case LOAD_ROOT_PAYLOAD: | |
354 | ERR("Index lookup for root field not implemented yet."); | |
355 | ret = -EINVAL; | |
356 | goto end; | |
357 | } | |
358 | data_offset = bytecode_push_data(runtime, &gid, | |
359 | __alignof__(gid), sizeof(gid)); | |
360 | if (data_offset < 0) { | |
361 | ret = -EINVAL; | |
362 | goto end; | |
363 | } | |
364 | switch (idx_len) { | |
365 | case 2: | |
366 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
367 | break; | |
368 | case 8: | |
369 | ((struct get_index_u64 *) insn->data)->index = data_offset; | |
370 | break; | |
371 | default: | |
372 | ret = -EINVAL; | |
373 | goto end; | |
374 | } | |
375 | ||
376 | return 0; | |
377 | ||
378 | end: | |
379 | return ret; | |
380 | } | |
381 | ||
382 | static int specialize_context_lookup_name(struct lttng_ctx *ctx, | |
383 | struct bytecode_runtime *bytecode, | |
384 | struct load_op *insn) | |
385 | { | |
386 | uint16_t offset; | |
387 | const char *name; | |
388 | ||
389 | offset = ((struct get_symbol *) insn->data)->offset; | |
390 | name = bytecode->p.bc->bc.data + bytecode->p.bc->bc.reloc_offset + offset; | |
391 | return lttng_get_context_index(ctx, name); | |
392 | } | |
393 | ||
394 | static int specialize_load_object(const struct lttng_event_field *field, | |
395 | struct vstack_load *load, bool is_context) | |
396 | { | |
397 | load->type = LOAD_OBJECT; | |
398 | /* | |
399 | * LTTng-UST layout all integer fields as s64 on the stack for the filter. | |
400 | */ | |
401 | switch (field->type.atype) { | |
402 | case atype_integer: | |
218deb69 | 403 | if (field->type.u.integer.signedness) |
47e5f13e MD |
404 | load->object_type = OBJECT_TYPE_S64; |
405 | else | |
406 | load->object_type = OBJECT_TYPE_U64; | |
407 | load->rev_bo = false; | |
408 | break; | |
409 | case atype_enum: | |
218deb69 | 410 | case atype_enum_nestable: |
47e5f13e | 411 | { |
218deb69 | 412 | const struct lttng_integer_type *itype; |
47e5f13e | 413 | |
218deb69 MD |
414 | if (field->type.atype == atype_enum) { |
415 | itype = &field->type.u.legacy.basic.enumeration.container_type; | |
416 | } else { | |
417 | itype = &field->type.u.enum_nestable.container_type->u.integer; | |
418 | } | |
47e5f13e MD |
419 | if (itype->signedness) |
420 | load->object_type = OBJECT_TYPE_S64; | |
421 | else | |
422 | load->object_type = OBJECT_TYPE_U64; | |
423 | load->rev_bo = false; | |
424 | break; | |
425 | } | |
426 | case atype_array: | |
218deb69 MD |
427 | if (field->type.u.legacy.array.elem_type.atype != atype_integer) { |
428 | ERR("Array nesting only supports integer types."); | |
429 | return -EINVAL; | |
430 | } | |
431 | if (is_context) { | |
432 | load->object_type = OBJECT_TYPE_STRING; | |
433 | } else { | |
434 | if (field->type.u.legacy.array.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
435 | load->object_type = OBJECT_TYPE_ARRAY; | |
436 | load->field = field; | |
437 | } else { | |
438 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
439 | } | |
440 | } | |
441 | break; | |
442 | case atype_array_nestable: | |
443 | if (field->type.u.array_nestable.elem_type->atype != atype_integer) { | |
47e5f13e MD |
444 | ERR("Array nesting only supports integer types."); |
445 | return -EINVAL; | |
446 | } | |
447 | if (is_context) { | |
448 | load->object_type = OBJECT_TYPE_STRING; | |
449 | } else { | |
218deb69 | 450 | if (field->type.u.array_nestable.elem_type->u.integer.encoding == lttng_encode_none) { |
47e5f13e MD |
451 | load->object_type = OBJECT_TYPE_ARRAY; |
452 | load->field = field; | |
453 | } else { | |
454 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
455 | } | |
456 | } | |
457 | break; | |
458 | case atype_sequence: | |
218deb69 MD |
459 | if (field->type.u.legacy.sequence.elem_type.atype != atype_integer) { |
460 | ERR("Sequence nesting only supports integer types."); | |
461 | return -EINVAL; | |
462 | } | |
463 | if (is_context) { | |
464 | load->object_type = OBJECT_TYPE_STRING; | |
465 | } else { | |
466 | if (field->type.u.legacy.sequence.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
467 | load->object_type = OBJECT_TYPE_SEQUENCE; | |
468 | load->field = field; | |
469 | } else { | |
470 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
471 | } | |
472 | } | |
473 | break; | |
474 | case atype_sequence_nestable: | |
475 | if (field->type.u.sequence_nestable.elem_type->atype != atype_integer) { | |
47e5f13e MD |
476 | ERR("Sequence nesting only supports integer types."); |
477 | return -EINVAL; | |
478 | } | |
479 | if (is_context) { | |
480 | load->object_type = OBJECT_TYPE_STRING; | |
481 | } else { | |
218deb69 | 482 | if (field->type.u.sequence_nestable.elem_type->u.integer.encoding == lttng_encode_none) { |
47e5f13e MD |
483 | load->object_type = OBJECT_TYPE_SEQUENCE; |
484 | load->field = field; | |
485 | } else { | |
486 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
487 | } | |
488 | } | |
489 | break; | |
218deb69 | 490 | |
47e5f13e MD |
491 | case atype_string: |
492 | load->object_type = OBJECT_TYPE_STRING; | |
493 | break; | |
494 | case atype_float: | |
495 | load->object_type = OBJECT_TYPE_DOUBLE; | |
496 | break; | |
497 | case atype_dynamic: | |
498 | load->object_type = OBJECT_TYPE_DYNAMIC; | |
8d3190bd | 499 | break; |
47e5f13e MD |
500 | case atype_struct: |
501 | ERR("Structure type cannot be loaded."); | |
502 | return -EINVAL; | |
503 | default: | |
504 | ERR("Unknown type: %d", (int) field->type.atype); | |
505 | return -EINVAL; | |
506 | } | |
507 | return 0; | |
508 | } | |
509 | ||
510 | static int specialize_context_lookup(struct lttng_session *session, | |
511 | struct bytecode_runtime *runtime, | |
512 | struct load_op *insn, | |
513 | struct vstack_load *load) | |
514 | { | |
515 | int idx, ret; | |
516 | struct lttng_ctx_field *ctx_field; | |
517 | struct lttng_event_field *field; | |
518 | struct filter_get_index_data gid; | |
519 | ssize_t data_offset; | |
520 | ||
521 | idx = specialize_context_lookup_name(session->ctx, runtime, insn); | |
522 | if (idx < 0) { | |
523 | return -ENOENT; | |
524 | } | |
525 | ctx_field = &session->ctx->fields[idx]; | |
526 | field = &ctx_field->event_field; | |
527 | ret = specialize_load_object(field, load, true); | |
528 | if (ret) | |
529 | return ret; | |
530 | /* Specialize each get_symbol into a get_index. */ | |
531 | insn->op = FILTER_OP_GET_INDEX_U16; | |
532 | memset(&gid, 0, sizeof(gid)); | |
533 | gid.ctx_index = idx; | |
534 | gid.elem.type = load->object_type; | |
535 | data_offset = bytecode_push_data(runtime, &gid, | |
536 | __alignof__(gid), sizeof(gid)); | |
537 | if (data_offset < 0) { | |
538 | return -EINVAL; | |
539 | } | |
540 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
541 | return 0; | |
542 | } | |
543 | ||
544 | static int specialize_app_context_lookup(struct lttng_session *session, | |
545 | struct bytecode_runtime *runtime, | |
546 | struct load_op *insn, | |
547 | struct vstack_load *load) | |
548 | { | |
549 | uint16_t offset; | |
550 | const char *orig_name; | |
551 | char *name = NULL; | |
552 | int idx, ret; | |
553 | struct lttng_ctx_field *ctx_field; | |
554 | struct lttng_event_field *field; | |
555 | struct filter_get_index_data gid; | |
556 | ssize_t data_offset; | |
557 | ||
558 | offset = ((struct get_symbol *) insn->data)->offset; | |
559 | orig_name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
560 | name = zmalloc(strlen(orig_name) + strlen("$app.") + 1); | |
561 | if (!name) { | |
562 | ret = -ENOMEM; | |
563 | goto end; | |
564 | } | |
565 | strcpy(name, "$app."); | |
566 | strcat(name, orig_name); | |
567 | idx = lttng_get_context_index(session->ctx, name); | |
568 | if (idx < 0) { | |
569 | assert(lttng_context_is_app(name)); | |
570 | ret = lttng_ust_add_app_context_to_ctx_rcu(name, | |
571 | &session->ctx); | |
572 | if (ret) | |
573 | return ret; | |
574 | idx = lttng_get_context_index(session->ctx, | |
575 | name); | |
576 | if (idx < 0) | |
577 | return -ENOENT; | |
578 | } | |
579 | ctx_field = &session->ctx->fields[idx]; | |
580 | field = &ctx_field->event_field; | |
581 | ret = specialize_load_object(field, load, true); | |
582 | if (ret) | |
583 | goto end; | |
584 | /* Specialize each get_symbol into a get_index. */ | |
585 | insn->op = FILTER_OP_GET_INDEX_U16; | |
586 | memset(&gid, 0, sizeof(gid)); | |
587 | gid.ctx_index = idx; | |
588 | gid.elem.type = load->object_type; | |
589 | data_offset = bytecode_push_data(runtime, &gid, | |
590 | __alignof__(gid), sizeof(gid)); | |
591 | if (data_offset < 0) { | |
592 | ret = -EINVAL; | |
593 | goto end; | |
594 | } | |
595 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
596 | ret = 0; | |
597 | end: | |
598 | free(name); | |
599 | return ret; | |
600 | } | |
601 | ||
602 | static int specialize_event_payload_lookup(struct lttng_event *event, | |
603 | struct bytecode_runtime *runtime, | |
604 | struct load_op *insn, | |
605 | struct vstack_load *load) | |
606 | { | |
607 | const char *name; | |
608 | uint16_t offset; | |
609 | const struct lttng_event_desc *desc = event->desc; | |
610 | unsigned int i, nr_fields; | |
611 | bool found = false; | |
612 | uint32_t field_offset = 0; | |
613 | const struct lttng_event_field *field; | |
614 | int ret; | |
615 | struct filter_get_index_data gid; | |
616 | ssize_t data_offset; | |
617 | ||
618 | nr_fields = desc->nr_fields; | |
619 | offset = ((struct get_symbol *) insn->data)->offset; | |
620 | name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
621 | for (i = 0; i < nr_fields; i++) { | |
622 | field = &desc->fields[i]; | |
218deb69 MD |
623 | if (field->u.ext.nofilter) { |
624 | continue; | |
625 | } | |
47e5f13e MD |
626 | if (!strcmp(field->name, name)) { |
627 | found = true; | |
628 | break; | |
629 | } | |
630 | /* compute field offset on stack */ | |
631 | switch (field->type.atype) { | |
632 | case atype_integer: | |
633 | case atype_enum: | |
218deb69 | 634 | case atype_enum_nestable: |
47e5f13e MD |
635 | field_offset += sizeof(int64_t); |
636 | break; | |
637 | case atype_array: | |
218deb69 | 638 | case atype_array_nestable: |
47e5f13e | 639 | case atype_sequence: |
218deb69 | 640 | case atype_sequence_nestable: |
47e5f13e MD |
641 | field_offset += sizeof(unsigned long); |
642 | field_offset += sizeof(void *); | |
643 | break; | |
644 | case atype_string: | |
645 | field_offset += sizeof(void *); | |
646 | break; | |
647 | case atype_float: | |
648 | field_offset += sizeof(double); | |
649 | break; | |
650 | default: | |
651 | ret = -EINVAL; | |
652 | goto end; | |
653 | } | |
654 | } | |
655 | if (!found) { | |
656 | ret = -EINVAL; | |
657 | goto end; | |
658 | } | |
659 | ||
660 | ret = specialize_load_object(field, load, false); | |
661 | if (ret) | |
662 | goto end; | |
663 | ||
664 | /* Specialize each get_symbol into a get_index. */ | |
665 | insn->op = FILTER_OP_GET_INDEX_U16; | |
666 | memset(&gid, 0, sizeof(gid)); | |
667 | gid.offset = field_offset; | |
668 | gid.elem.type = load->object_type; | |
669 | data_offset = bytecode_push_data(runtime, &gid, | |
670 | __alignof__(gid), sizeof(gid)); | |
671 | if (data_offset < 0) { | |
672 | ret = -EINVAL; | |
673 | goto end; | |
674 | } | |
675 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
676 | ret = 0; | |
677 | end: | |
678 | return ret; | |
679 | } | |
680 | ||
681 | int lttng_filter_specialize_bytecode(struct lttng_event *event, | |
682 | struct bytecode_runtime *bytecode) | |
97b58163 MD |
683 | { |
684 | void *pc, *next_pc, *start_pc; | |
685 | int ret = -EINVAL; | |
0305960f MD |
686 | struct vstack _stack; |
687 | struct vstack *stack = &_stack; | |
47e5f13e | 688 | struct lttng_session *session = bytecode->p.session; |
97b58163 | 689 | |
0305960f | 690 | vstack_init(stack); |
97b58163 | 691 | |
47e5f13e | 692 | start_pc = &bytecode->code[0]; |
97b58163 MD |
693 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; |
694 | pc = next_pc) { | |
695 | switch (*(filter_opcode_t *) pc) { | |
696 | case FILTER_OP_UNKNOWN: | |
697 | default: | |
698 | ERR("unknown bytecode op %u\n", | |
699 | (unsigned int) *(filter_opcode_t *) pc); | |
700 | ret = -EINVAL; | |
701 | goto end; | |
702 | ||
703 | case FILTER_OP_RETURN: | |
93c591bb MD |
704 | if (vstack_ax(stack)->type == REG_S64) |
705 | *(filter_opcode_t *) pc = FILTER_OP_RETURN_S64; | |
706 | ret = 0; | |
707 | goto end; | |
708 | ||
709 | case FILTER_OP_RETURN_S64: | |
710 | if (vstack_ax(stack)->type != REG_S64) { | |
711 | ERR("Unexpected register type\n"); | |
712 | ret = -EINVAL; | |
713 | goto end; | |
714 | } | |
97b58163 MD |
715 | ret = 0; |
716 | goto end; | |
717 | ||
718 | /* binary */ | |
719 | case FILTER_OP_MUL: | |
720 | case FILTER_OP_DIV: | |
721 | case FILTER_OP_MOD: | |
722 | case FILTER_OP_PLUS: | |
723 | case FILTER_OP_MINUS: | |
97b58163 MD |
724 | ERR("unsupported bytecode op %u\n", |
725 | (unsigned int) *(filter_opcode_t *) pc); | |
726 | ret = -EINVAL; | |
727 | goto end; | |
728 | ||
729 | case FILTER_OP_EQ: | |
730 | { | |
731 | struct binary_op *insn = (struct binary_op *) pc; | |
732 | ||
0305960f | 733 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
734 | default: |
735 | ERR("unknown register type\n"); | |
736 | ret = -EINVAL; | |
737 | goto end; | |
738 | ||
739 | case REG_STRING: | |
53569322 MD |
740 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
741 | break; | |
3151a51d PP |
742 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
743 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
744 | else | |
745 | insn->op = FILTER_OP_EQ_STRING; | |
746 | break; | |
747 | case REG_STAR_GLOB_STRING: | |
748 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
749 | break; | |
750 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
97b58163 MD |
751 | break; |
752 | case REG_S64: | |
53569322 MD |
753 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
754 | break; | |
0305960f | 755 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
756 | insn->op = FILTER_OP_EQ_S64; |
757 | else | |
dbea82ec | 758 | insn->op = FILTER_OP_EQ_DOUBLE_S64; |
97b58163 MD |
759 | break; |
760 | case REG_DOUBLE: | |
53569322 MD |
761 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
762 | break; | |
dbea82ec MD |
763 | if (vstack_bx(stack)->type == REG_S64) |
764 | insn->op = FILTER_OP_EQ_S64_DOUBLE; | |
765 | else | |
766 | insn->op = FILTER_OP_EQ_DOUBLE; | |
97b58163 | 767 | break; |
53569322 MD |
768 | case REG_UNKNOWN: |
769 | break; /* Dynamic typing. */ | |
97b58163 | 770 | } |
0305960f MD |
771 | /* Pop 2, push 1 */ |
772 | if (vstack_pop(stack)) { | |
773 | ret = -EINVAL; | |
774 | goto end; | |
775 | } | |
776 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
777 | next_pc += sizeof(struct binary_op); |
778 | break; | |
779 | } | |
780 | ||
781 | case FILTER_OP_NE: | |
782 | { | |
783 | struct binary_op *insn = (struct binary_op *) pc; | |
784 | ||
0305960f | 785 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
786 | default: |
787 | ERR("unknown register type\n"); | |
788 | ret = -EINVAL; | |
789 | goto end; | |
790 | ||
791 | case REG_STRING: | |
53569322 MD |
792 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
793 | break; | |
3151a51d PP |
794 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
795 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
796 | else | |
797 | insn->op = FILTER_OP_NE_STRING; | |
798 | break; | |
799 | case REG_STAR_GLOB_STRING: | |
800 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
801 | break; | |
802 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
97b58163 MD |
803 | break; |
804 | case REG_S64: | |
53569322 MD |
805 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
806 | break; | |
0305960f | 807 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
808 | insn->op = FILTER_OP_NE_S64; |
809 | else | |
dbea82ec | 810 | insn->op = FILTER_OP_NE_DOUBLE_S64; |
97b58163 MD |
811 | break; |
812 | case REG_DOUBLE: | |
53569322 MD |
813 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
814 | break; | |
dbea82ec MD |
815 | if (vstack_bx(stack)->type == REG_S64) |
816 | insn->op = FILTER_OP_NE_S64_DOUBLE; | |
817 | else | |
818 | insn->op = FILTER_OP_NE_DOUBLE; | |
97b58163 | 819 | break; |
53569322 MD |
820 | case REG_UNKNOWN: |
821 | break; /* Dynamic typing. */ | |
97b58163 | 822 | } |
0305960f MD |
823 | /* Pop 2, push 1 */ |
824 | if (vstack_pop(stack)) { | |
825 | ret = -EINVAL; | |
826 | goto end; | |
827 | } | |
828 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
829 | next_pc += sizeof(struct binary_op); |
830 | break; | |
831 | } | |
832 | ||
833 | case FILTER_OP_GT: | |
834 | { | |
835 | struct binary_op *insn = (struct binary_op *) pc; | |
836 | ||
0305960f | 837 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
838 | default: |
839 | ERR("unknown register type\n"); | |
840 | ret = -EINVAL; | |
841 | goto end; | |
842 | ||
3151a51d PP |
843 | case REG_STAR_GLOB_STRING: |
844 | ERR("invalid register type for > binary operator\n"); | |
845 | ret = -EINVAL; | |
846 | goto end; | |
97b58163 | 847 | case REG_STRING: |
53569322 MD |
848 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
849 | break; | |
97b58163 MD |
850 | insn->op = FILTER_OP_GT_STRING; |
851 | break; | |
852 | case REG_S64: | |
53569322 MD |
853 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
854 | break; | |
0305960f | 855 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
856 | insn->op = FILTER_OP_GT_S64; |
857 | else | |
dbea82ec | 858 | insn->op = FILTER_OP_GT_DOUBLE_S64; |
97b58163 MD |
859 | break; |
860 | case REG_DOUBLE: | |
53569322 MD |
861 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
862 | break; | |
dbea82ec MD |
863 | if (vstack_bx(stack)->type == REG_S64) |
864 | insn->op = FILTER_OP_GT_S64_DOUBLE; | |
865 | else | |
866 | insn->op = FILTER_OP_GT_DOUBLE; | |
97b58163 | 867 | break; |
53569322 MD |
868 | case REG_UNKNOWN: |
869 | break; /* Dynamic typing. */ | |
97b58163 | 870 | } |
0305960f MD |
871 | /* Pop 2, push 1 */ |
872 | if (vstack_pop(stack)) { | |
873 | ret = -EINVAL; | |
874 | goto end; | |
875 | } | |
876 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
877 | next_pc += sizeof(struct binary_op); |
878 | break; | |
879 | } | |
880 | ||
881 | case FILTER_OP_LT: | |
882 | { | |
883 | struct binary_op *insn = (struct binary_op *) pc; | |
884 | ||
0305960f | 885 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
886 | default: |
887 | ERR("unknown register type\n"); | |
888 | ret = -EINVAL; | |
889 | goto end; | |
890 | ||
3151a51d PP |
891 | case REG_STAR_GLOB_STRING: |
892 | ERR("invalid register type for < binary operator\n"); | |
893 | ret = -EINVAL; | |
894 | goto end; | |
97b58163 | 895 | case REG_STRING: |
53569322 MD |
896 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
897 | break; | |
97b58163 MD |
898 | insn->op = FILTER_OP_LT_STRING; |
899 | break; | |
900 | case REG_S64: | |
53569322 MD |
901 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
902 | break; | |
0305960f | 903 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
904 | insn->op = FILTER_OP_LT_S64; |
905 | else | |
dbea82ec | 906 | insn->op = FILTER_OP_LT_DOUBLE_S64; |
97b58163 MD |
907 | break; |
908 | case REG_DOUBLE: | |
53569322 MD |
909 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
910 | break; | |
dbea82ec MD |
911 | if (vstack_bx(stack)->type == REG_S64) |
912 | insn->op = FILTER_OP_LT_S64_DOUBLE; | |
913 | else | |
914 | insn->op = FILTER_OP_LT_DOUBLE; | |
97b58163 | 915 | break; |
53569322 MD |
916 | case REG_UNKNOWN: |
917 | break; /* Dynamic typing. */ | |
97b58163 | 918 | } |
0305960f MD |
919 | /* Pop 2, push 1 */ |
920 | if (vstack_pop(stack)) { | |
921 | ret = -EINVAL; | |
922 | goto end; | |
923 | } | |
924 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
925 | next_pc += sizeof(struct binary_op); |
926 | break; | |
927 | } | |
928 | ||
929 | case FILTER_OP_GE: | |
930 | { | |
931 | struct binary_op *insn = (struct binary_op *) pc; | |
932 | ||
0305960f | 933 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
934 | default: |
935 | ERR("unknown register type\n"); | |
936 | ret = -EINVAL; | |
937 | goto end; | |
938 | ||
3151a51d PP |
939 | case REG_STAR_GLOB_STRING: |
940 | ERR("invalid register type for >= binary operator\n"); | |
941 | ret = -EINVAL; | |
942 | goto end; | |
97b58163 | 943 | case REG_STRING: |
53569322 MD |
944 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
945 | break; | |
97b58163 MD |
946 | insn->op = FILTER_OP_GE_STRING; |
947 | break; | |
948 | case REG_S64: | |
53569322 MD |
949 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
950 | break; | |
0305960f | 951 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
952 | insn->op = FILTER_OP_GE_S64; |
953 | else | |
dbea82ec | 954 | insn->op = FILTER_OP_GE_DOUBLE_S64; |
97b58163 MD |
955 | break; |
956 | case REG_DOUBLE: | |
53569322 MD |
957 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
958 | break; | |
dbea82ec MD |
959 | if (vstack_bx(stack)->type == REG_S64) |
960 | insn->op = FILTER_OP_GE_S64_DOUBLE; | |
961 | else | |
962 | insn->op = FILTER_OP_GE_DOUBLE; | |
97b58163 | 963 | break; |
53569322 MD |
964 | case REG_UNKNOWN: |
965 | break; /* Dynamic typing. */ | |
97b58163 | 966 | } |
0305960f MD |
967 | /* Pop 2, push 1 */ |
968 | if (vstack_pop(stack)) { | |
969 | ret = -EINVAL; | |
970 | goto end; | |
971 | } | |
972 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
973 | next_pc += sizeof(struct binary_op); |
974 | break; | |
975 | } | |
976 | case FILTER_OP_LE: | |
977 | { | |
978 | struct binary_op *insn = (struct binary_op *) pc; | |
979 | ||
0305960f | 980 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
981 | default: |
982 | ERR("unknown register type\n"); | |
983 | ret = -EINVAL; | |
984 | goto end; | |
985 | ||
3151a51d PP |
986 | case REG_STAR_GLOB_STRING: |
987 | ERR("invalid register type for <= binary operator\n"); | |
988 | ret = -EINVAL; | |
989 | goto end; | |
97b58163 | 990 | case REG_STRING: |
53569322 MD |
991 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
992 | break; | |
97b58163 MD |
993 | insn->op = FILTER_OP_LE_STRING; |
994 | break; | |
995 | case REG_S64: | |
53569322 MD |
996 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
997 | break; | |
0305960f | 998 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
999 | insn->op = FILTER_OP_LE_S64; |
1000 | else | |
dbea82ec | 1001 | insn->op = FILTER_OP_LE_DOUBLE_S64; |
97b58163 MD |
1002 | break; |
1003 | case REG_DOUBLE: | |
53569322 MD |
1004 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
1005 | break; | |
dbea82ec MD |
1006 | if (vstack_bx(stack)->type == REG_S64) |
1007 | insn->op = FILTER_OP_LE_S64_DOUBLE; | |
1008 | else | |
1009 | insn->op = FILTER_OP_LE_DOUBLE; | |
97b58163 | 1010 | break; |
53569322 MD |
1011 | case REG_UNKNOWN: |
1012 | break; /* Dynamic typing. */ | |
97b58163 | 1013 | } |
0305960f | 1014 | vstack_ax(stack)->type = REG_S64; |
97b58163 MD |
1015 | next_pc += sizeof(struct binary_op); |
1016 | break; | |
1017 | } | |
1018 | ||
1019 | case FILTER_OP_EQ_STRING: | |
1020 | case FILTER_OP_NE_STRING: | |
1021 | case FILTER_OP_GT_STRING: | |
1022 | case FILTER_OP_LT_STRING: | |
1023 | case FILTER_OP_GE_STRING: | |
1024 | case FILTER_OP_LE_STRING: | |
3151a51d PP |
1025 | case FILTER_OP_EQ_STAR_GLOB_STRING: |
1026 | case FILTER_OP_NE_STAR_GLOB_STRING: | |
97b58163 MD |
1027 | case FILTER_OP_EQ_S64: |
1028 | case FILTER_OP_NE_S64: | |
1029 | case FILTER_OP_GT_S64: | |
1030 | case FILTER_OP_LT_S64: | |
1031 | case FILTER_OP_GE_S64: | |
1032 | case FILTER_OP_LE_S64: | |
1033 | case FILTER_OP_EQ_DOUBLE: | |
1034 | case FILTER_OP_NE_DOUBLE: | |
1035 | case FILTER_OP_GT_DOUBLE: | |
1036 | case FILTER_OP_LT_DOUBLE: | |
1037 | case FILTER_OP_GE_DOUBLE: | |
1038 | case FILTER_OP_LE_DOUBLE: | |
dbea82ec MD |
1039 | case FILTER_OP_EQ_DOUBLE_S64: |
1040 | case FILTER_OP_NE_DOUBLE_S64: | |
1041 | case FILTER_OP_GT_DOUBLE_S64: | |
1042 | case FILTER_OP_LT_DOUBLE_S64: | |
1043 | case FILTER_OP_GE_DOUBLE_S64: | |
1044 | case FILTER_OP_LE_DOUBLE_S64: | |
1045 | case FILTER_OP_EQ_S64_DOUBLE: | |
1046 | case FILTER_OP_NE_S64_DOUBLE: | |
1047 | case FILTER_OP_GT_S64_DOUBLE: | |
1048 | case FILTER_OP_LT_S64_DOUBLE: | |
1049 | case FILTER_OP_GE_S64_DOUBLE: | |
1050 | case FILTER_OP_LE_S64_DOUBLE: | |
0039e2d8 MD |
1051 | case FILTER_OP_BIT_RSHIFT: |
1052 | case FILTER_OP_BIT_LSHIFT: | |
47e5f13e MD |
1053 | case FILTER_OP_BIT_AND: |
1054 | case FILTER_OP_BIT_OR: | |
1055 | case FILTER_OP_BIT_XOR: | |
97b58163 | 1056 | { |
0305960f MD |
1057 | /* Pop 2, push 1 */ |
1058 | if (vstack_pop(stack)) { | |
1059 | ret = -EINVAL; | |
1060 | goto end; | |
1061 | } | |
1062 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1063 | next_pc += sizeof(struct binary_op); |
1064 | break; | |
1065 | } | |
1066 | ||
1067 | /* unary */ | |
1068 | case FILTER_OP_UNARY_PLUS: | |
1069 | { | |
1070 | struct unary_op *insn = (struct unary_op *) pc; | |
1071 | ||
0305960f | 1072 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1073 | default: |
1074 | ERR("unknown register type\n"); | |
1075 | ret = -EINVAL; | |
1076 | goto end; | |
1077 | ||
1078 | case REG_S64: | |
1079 | insn->op = FILTER_OP_UNARY_PLUS_S64; | |
1080 | break; | |
1081 | case REG_DOUBLE: | |
1082 | insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; | |
1083 | break; | |
53569322 MD |
1084 | case REG_UNKNOWN: /* Dynamic typing. */ |
1085 | break; | |
97b58163 | 1086 | } |
0305960f | 1087 | /* Pop 1, push 1 */ |
97b58163 MD |
1088 | next_pc += sizeof(struct unary_op); |
1089 | break; | |
1090 | } | |
1091 | ||
1092 | case FILTER_OP_UNARY_MINUS: | |
1093 | { | |
1094 | struct unary_op *insn = (struct unary_op *) pc; | |
1095 | ||
0305960f | 1096 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1097 | default: |
1098 | ERR("unknown register type\n"); | |
1099 | ret = -EINVAL; | |
1100 | goto end; | |
1101 | ||
1102 | case REG_S64: | |
1103 | insn->op = FILTER_OP_UNARY_MINUS_S64; | |
1104 | break; | |
1105 | case REG_DOUBLE: | |
1106 | insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; | |
1107 | break; | |
53569322 MD |
1108 | case REG_UNKNOWN: /* Dynamic typing. */ |
1109 | break; | |
97b58163 | 1110 | } |
0305960f | 1111 | /* Pop 1, push 1 */ |
97b58163 MD |
1112 | next_pc += sizeof(struct unary_op); |
1113 | break; | |
1114 | } | |
1115 | ||
1116 | case FILTER_OP_UNARY_NOT: | |
1117 | { | |
1118 | struct unary_op *insn = (struct unary_op *) pc; | |
1119 | ||
0305960f | 1120 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1121 | default: |
1122 | ERR("unknown register type\n"); | |
1123 | ret = -EINVAL; | |
1124 | goto end; | |
1125 | ||
1126 | case REG_S64: | |
1127 | insn->op = FILTER_OP_UNARY_NOT_S64; | |
1128 | break; | |
1129 | case REG_DOUBLE: | |
1130 | insn->op = FILTER_OP_UNARY_NOT_DOUBLE; | |
1131 | break; | |
53569322 MD |
1132 | case REG_UNKNOWN: /* Dynamic typing. */ |
1133 | break; | |
97b58163 | 1134 | } |
0305960f | 1135 | /* Pop 1, push 1 */ |
97b58163 MD |
1136 | next_pc += sizeof(struct unary_op); |
1137 | break; | |
1138 | } | |
1139 | ||
0039e2d8 MD |
1140 | case FILTER_OP_UNARY_BIT_NOT: |
1141 | { | |
1142 | /* Pop 1, push 1 */ | |
1143 | next_pc += sizeof(struct unary_op); | |
1144 | break; | |
1145 | } | |
1146 | ||
97b58163 MD |
1147 | case FILTER_OP_UNARY_PLUS_S64: |
1148 | case FILTER_OP_UNARY_MINUS_S64: | |
1149 | case FILTER_OP_UNARY_NOT_S64: | |
1150 | case FILTER_OP_UNARY_PLUS_DOUBLE: | |
1151 | case FILTER_OP_UNARY_MINUS_DOUBLE: | |
1152 | case FILTER_OP_UNARY_NOT_DOUBLE: | |
1153 | { | |
0305960f | 1154 | /* Pop 1, push 1 */ |
97b58163 MD |
1155 | next_pc += sizeof(struct unary_op); |
1156 | break; | |
1157 | } | |
1158 | ||
1159 | /* logical */ | |
1160 | case FILTER_OP_AND: | |
1161 | case FILTER_OP_OR: | |
1162 | { | |
b9f4cd79 MD |
1163 | /* Continue to next instruction */ |
1164 | /* Pop 1 when jump not taken */ | |
1165 | if (vstack_pop(stack)) { | |
1166 | ret = -EINVAL; | |
1167 | goto end; | |
1168 | } | |
97b58163 MD |
1169 | next_pc += sizeof(struct logical_op); |
1170 | break; | |
1171 | } | |
1172 | ||
77aa5901 | 1173 | /* load field ref */ |
97b58163 MD |
1174 | case FILTER_OP_LOAD_FIELD_REF: |
1175 | { | |
1176 | ERR("Unknown field ref type\n"); | |
1177 | ret = -EINVAL; | |
1178 | goto end; | |
1179 | } | |
77aa5901 MD |
1180 | /* get context ref */ |
1181 | case FILTER_OP_GET_CONTEXT_REF: | |
1182 | { | |
53569322 MD |
1183 | if (vstack_push(stack)) { |
1184 | ret = -EINVAL; | |
1185 | goto end; | |
1186 | } | |
1187 | vstack_ax(stack)->type = REG_UNKNOWN; | |
1188 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1189 | break; | |
77aa5901 | 1190 | } |
97b58163 MD |
1191 | case FILTER_OP_LOAD_FIELD_REF_STRING: |
1192 | case FILTER_OP_LOAD_FIELD_REF_SEQUENCE: | |
77aa5901 | 1193 | case FILTER_OP_GET_CONTEXT_REF_STRING: |
97b58163 | 1194 | { |
0305960f MD |
1195 | if (vstack_push(stack)) { |
1196 | ret = -EINVAL; | |
1197 | goto end; | |
1198 | } | |
1199 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
1200 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1201 | break; | |
1202 | } | |
1203 | case FILTER_OP_LOAD_FIELD_REF_S64: | |
77aa5901 | 1204 | case FILTER_OP_GET_CONTEXT_REF_S64: |
97b58163 | 1205 | { |
0305960f MD |
1206 | if (vstack_push(stack)) { |
1207 | ret = -EINVAL; | |
1208 | goto end; | |
1209 | } | |
1210 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1211 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1212 | break; | |
1213 | } | |
1214 | case FILTER_OP_LOAD_FIELD_REF_DOUBLE: | |
77aa5901 | 1215 | case FILTER_OP_GET_CONTEXT_REF_DOUBLE: |
97b58163 | 1216 | { |
0305960f MD |
1217 | if (vstack_push(stack)) { |
1218 | ret = -EINVAL; | |
1219 | goto end; | |
1220 | } | |
1221 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
1222 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1223 | break; | |
1224 | } | |
1225 | ||
77aa5901 | 1226 | /* load from immediate operand */ |
97b58163 MD |
1227 | case FILTER_OP_LOAD_STRING: |
1228 | { | |
1229 | struct load_op *insn = (struct load_op *) pc; | |
1230 | ||
0305960f MD |
1231 | if (vstack_push(stack)) { |
1232 | ret = -EINVAL; | |
1233 | goto end; | |
1234 | } | |
1235 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
1236 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
1237 | break; | |
1238 | } | |
1239 | ||
3151a51d PP |
1240 | case FILTER_OP_LOAD_STAR_GLOB_STRING: |
1241 | { | |
1242 | struct load_op *insn = (struct load_op *) pc; | |
1243 | ||
1244 | if (vstack_push(stack)) { | |
1245 | ret = -EINVAL; | |
1246 | goto end; | |
1247 | } | |
1248 | vstack_ax(stack)->type = REG_STAR_GLOB_STRING; | |
1249 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
1250 | break; | |
1251 | } | |
1252 | ||
97b58163 MD |
1253 | case FILTER_OP_LOAD_S64: |
1254 | { | |
0305960f MD |
1255 | if (vstack_push(stack)) { |
1256 | ret = -EINVAL; | |
1257 | goto end; | |
1258 | } | |
1259 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1260 | next_pc += sizeof(struct load_op) |
1261 | + sizeof(struct literal_numeric); | |
1262 | break; | |
1263 | } | |
1264 | ||
1265 | case FILTER_OP_LOAD_DOUBLE: | |
1266 | { | |
0305960f MD |
1267 | if (vstack_push(stack)) { |
1268 | ret = -EINVAL; | |
1269 | goto end; | |
1270 | } | |
1271 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
1272 | next_pc += sizeof(struct load_op) |
1273 | + sizeof(struct literal_double); | |
1274 | break; | |
1275 | } | |
1276 | ||
1277 | /* cast */ | |
1278 | case FILTER_OP_CAST_TO_S64: | |
1279 | { | |
1280 | struct cast_op *insn = (struct cast_op *) pc; | |
1281 | ||
0305960f | 1282 | switch (vstack_ax(stack)->type) { |
97b58163 MD |
1283 | default: |
1284 | ERR("unknown register type\n"); | |
1285 | ret = -EINVAL; | |
1286 | goto end; | |
1287 | ||
1288 | case REG_STRING: | |
3151a51d | 1289 | case REG_STAR_GLOB_STRING: |
97b58163 MD |
1290 | ERR("Cast op can only be applied to numeric or floating point registers\n"); |
1291 | ret = -EINVAL; | |
1292 | goto end; | |
1293 | case REG_S64: | |
1294 | insn->op = FILTER_OP_CAST_NOP; | |
1295 | break; | |
1296 | case REG_DOUBLE: | |
1297 | insn->op = FILTER_OP_CAST_DOUBLE_TO_S64; | |
1298 | break; | |
53569322 MD |
1299 | case REG_UNKNOWN: |
1300 | break; | |
97b58163 | 1301 | } |
0305960f MD |
1302 | /* Pop 1, push 1 */ |
1303 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1304 | next_pc += sizeof(struct cast_op); |
1305 | break; | |
1306 | } | |
1307 | case FILTER_OP_CAST_DOUBLE_TO_S64: | |
1308 | { | |
0305960f MD |
1309 | /* Pop 1, push 1 */ |
1310 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1311 | next_pc += sizeof(struct cast_op); |
1312 | break; | |
1313 | } | |
1314 | case FILTER_OP_CAST_NOP: | |
1315 | { | |
1316 | next_pc += sizeof(struct cast_op); | |
1317 | break; | |
1318 | } | |
1319 | ||
47e5f13e MD |
1320 | /* |
1321 | * Instructions for recursive traversal through composed types. | |
1322 | */ | |
1323 | case FILTER_OP_GET_CONTEXT_ROOT: | |
1324 | { | |
1325 | if (vstack_push(stack)) { | |
1326 | ret = -EINVAL; | |
1327 | goto end; | |
1328 | } | |
1329 | vstack_ax(stack)->type = REG_PTR; | |
1330 | vstack_ax(stack)->load.type = LOAD_ROOT_CONTEXT; | |
1331 | next_pc += sizeof(struct load_op); | |
1332 | break; | |
1333 | } | |
1334 | case FILTER_OP_GET_APP_CONTEXT_ROOT: | |
1335 | { | |
1336 | if (vstack_push(stack)) { | |
1337 | ret = -EINVAL; | |
1338 | goto end; | |
1339 | } | |
1340 | vstack_ax(stack)->type = REG_PTR; | |
1341 | vstack_ax(stack)->load.type = LOAD_ROOT_APP_CONTEXT; | |
1342 | next_pc += sizeof(struct load_op); | |
1343 | break; | |
1344 | } | |
1345 | case FILTER_OP_GET_PAYLOAD_ROOT: | |
1346 | { | |
1347 | if (vstack_push(stack)) { | |
1348 | ret = -EINVAL; | |
1349 | goto end; | |
1350 | } | |
1351 | vstack_ax(stack)->type = REG_PTR; | |
1352 | vstack_ax(stack)->load.type = LOAD_ROOT_PAYLOAD; | |
1353 | next_pc += sizeof(struct load_op); | |
1354 | break; | |
1355 | } | |
1356 | ||
1357 | case FILTER_OP_LOAD_FIELD: | |
1358 | { | |
1359 | struct load_op *insn = (struct load_op *) pc; | |
1360 | ||
1361 | assert(vstack_ax(stack)->type == REG_PTR); | |
1362 | /* Pop 1, push 1 */ | |
1363 | ret = specialize_load_field(vstack_ax(stack), insn); | |
1364 | if (ret) | |
1365 | goto end; | |
1366 | ||
1367 | next_pc += sizeof(struct load_op); | |
1368 | break; | |
1369 | } | |
1370 | ||
1371 | case FILTER_OP_LOAD_FIELD_S8: | |
1372 | case FILTER_OP_LOAD_FIELD_S16: | |
1373 | case FILTER_OP_LOAD_FIELD_S32: | |
1374 | case FILTER_OP_LOAD_FIELD_S64: | |
1375 | case FILTER_OP_LOAD_FIELD_U8: | |
1376 | case FILTER_OP_LOAD_FIELD_U16: | |
1377 | case FILTER_OP_LOAD_FIELD_U32: | |
1378 | case FILTER_OP_LOAD_FIELD_U64: | |
1379 | { | |
1380 | /* Pop 1, push 1 */ | |
1381 | vstack_ax(stack)->type = REG_S64; | |
1382 | next_pc += sizeof(struct load_op); | |
1383 | break; | |
1384 | } | |
1385 | ||
1386 | case FILTER_OP_LOAD_FIELD_STRING: | |
1387 | case FILTER_OP_LOAD_FIELD_SEQUENCE: | |
1388 | { | |
1389 | /* Pop 1, push 1 */ | |
1390 | vstack_ax(stack)->type = REG_STRING; | |
1391 | next_pc += sizeof(struct load_op); | |
1392 | break; | |
1393 | } | |
1394 | ||
1395 | case FILTER_OP_LOAD_FIELD_DOUBLE: | |
1396 | { | |
1397 | /* Pop 1, push 1 */ | |
1398 | vstack_ax(stack)->type = REG_DOUBLE; | |
1399 | next_pc += sizeof(struct load_op); | |
1400 | break; | |
1401 | } | |
1402 | ||
1403 | case FILTER_OP_GET_SYMBOL: | |
1404 | { | |
1405 | struct load_op *insn = (struct load_op *) pc; | |
1406 | ||
1407 | dbg_printf("op get symbol\n"); | |
1408 | switch (vstack_ax(stack)->load.type) { | |
1409 | case LOAD_OBJECT: | |
1410 | ERR("Nested fields not implemented yet."); | |
1411 | ret = -EINVAL; | |
1412 | goto end; | |
1413 | case LOAD_ROOT_CONTEXT: | |
1414 | /* Lookup context field. */ | |
1415 | ret = specialize_context_lookup(session, | |
1416 | bytecode, insn, | |
1417 | &vstack_ax(stack)->load); | |
1418 | if (ret) | |
1419 | goto end; | |
1420 | break; | |
1421 | case LOAD_ROOT_APP_CONTEXT: | |
1422 | /* Lookup app context field. */ | |
1423 | ret = specialize_app_context_lookup(session, | |
1424 | bytecode, insn, | |
1425 | &vstack_ax(stack)->load); | |
1426 | if (ret) | |
1427 | goto end; | |
1428 | break; | |
1429 | case LOAD_ROOT_PAYLOAD: | |
1430 | /* Lookup event payload field. */ | |
1431 | ret = specialize_event_payload_lookup(event, | |
1432 | bytecode, insn, | |
1433 | &vstack_ax(stack)->load); | |
1434 | if (ret) | |
1435 | goto end; | |
1436 | break; | |
1437 | } | |
1438 | next_pc += sizeof(struct load_op) + sizeof(struct get_symbol); | |
1439 | break; | |
1440 | } | |
1441 | ||
1442 | case FILTER_OP_GET_SYMBOL_FIELD: | |
1443 | { | |
1444 | /* Always generated by specialize phase. */ | |
1445 | ret = -EINVAL; | |
1446 | goto end; | |
1447 | } | |
1448 | ||
1449 | case FILTER_OP_GET_INDEX_U16: | |
1450 | { | |
1451 | struct load_op *insn = (struct load_op *) pc; | |
1452 | struct get_index_u16 *index = (struct get_index_u16 *) insn->data; | |
1453 | ||
1454 | dbg_printf("op get index u16\n"); | |
1455 | /* Pop 1, push 1 */ | |
1456 | ret = specialize_get_index(bytecode, insn, index->index, | |
1457 | vstack_ax(stack), sizeof(*index)); | |
1458 | if (ret) | |
1459 | goto end; | |
1460 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16); | |
1461 | break; | |
1462 | } | |
1463 | ||
1464 | case FILTER_OP_GET_INDEX_U64: | |
1465 | { | |
1466 | struct load_op *insn = (struct load_op *) pc; | |
1467 | struct get_index_u64 *index = (struct get_index_u64 *) insn->data; | |
1468 | ||
1469 | dbg_printf("op get index u64\n"); | |
1470 | /* Pop 1, push 1 */ | |
1471 | ret = specialize_get_index(bytecode, insn, index->index, | |
1472 | vstack_ax(stack), sizeof(*index)); | |
1473 | if (ret) | |
1474 | goto end; | |
1475 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64); | |
1476 | break; | |
1477 | } | |
1478 | ||
97b58163 MD |
1479 | } |
1480 | } | |
1481 | end: | |
1482 | return ret; | |
1483 | } |