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> |
92495593 | 33 | #include "ust-events-internal.h" |
97b58163 | 34 | |
47e5f13e MD |
35 | static int lttng_fls(int val) |
36 | { | |
37 | int r = 32; | |
38 | unsigned int x = (unsigned int) val; | |
39 | ||
40 | if (!x) | |
41 | return 0; | |
42 | if (!(x & 0xFFFF0000U)) { | |
43 | x <<= 16; | |
44 | r -= 16; | |
45 | } | |
46 | if (!(x & 0xFF000000U)) { | |
47 | x <<= 8; | |
48 | r -= 8; | |
49 | } | |
50 | if (!(x & 0xF0000000U)) { | |
51 | x <<= 4; | |
52 | r -= 4; | |
53 | } | |
54 | if (!(x & 0xC0000000U)) { | |
55 | x <<= 2; | |
56 | r -= 2; | |
57 | } | |
58 | if (!(x & 0x80000000U)) { | |
59 | r -= 1; | |
60 | } | |
61 | return r; | |
62 | } | |
63 | ||
64 | static int get_count_order(unsigned int count) | |
65 | { | |
66 | int order; | |
67 | ||
68 | order = lttng_fls(count) - 1; | |
69 | if (count & (count - 1)) | |
70 | order++; | |
71 | return order; | |
72 | } | |
73 | ||
74 | static ssize_t bytecode_reserve_data(struct bytecode_runtime *runtime, | |
75 | size_t align, size_t len) | |
76 | { | |
77 | ssize_t ret; | |
b72687b8 | 78 | size_t padding = lttng_ust_offset_align(runtime->data_len, align); |
47e5f13e MD |
79 | size_t new_len = runtime->data_len + padding + len; |
80 | size_t new_alloc_len = new_len; | |
81 | size_t old_alloc_len = runtime->data_alloc_len; | |
82 | ||
83 | if (new_len > FILTER_MAX_DATA_LEN) | |
84 | return -EINVAL; | |
85 | ||
86 | if (new_alloc_len > old_alloc_len) { | |
87 | char *newptr; | |
88 | ||
89 | new_alloc_len = | |
90 | max_t(size_t, 1U << get_count_order(new_alloc_len), old_alloc_len << 1); | |
91 | newptr = realloc(runtime->data, new_alloc_len); | |
92 | if (!newptr) | |
93 | return -ENOMEM; | |
94 | runtime->data = newptr; | |
95 | /* We zero directly the memory from start of allocation. */ | |
96 | memset(&runtime->data[old_alloc_len], 0, new_alloc_len - old_alloc_len); | |
97 | runtime->data_alloc_len = new_alloc_len; | |
98 | } | |
99 | runtime->data_len += padding; | |
100 | ret = runtime->data_len; | |
101 | runtime->data_len += len; | |
102 | return ret; | |
103 | } | |
104 | ||
105 | static ssize_t bytecode_push_data(struct bytecode_runtime *runtime, | |
106 | const void *p, size_t align, size_t len) | |
107 | { | |
108 | ssize_t offset; | |
109 | ||
110 | offset = bytecode_reserve_data(runtime, align, len); | |
111 | if (offset < 0) | |
112 | return -ENOMEM; | |
113 | memcpy(&runtime->data[offset], p, len); | |
114 | return offset; | |
115 | } | |
116 | ||
117 | static int specialize_load_field(struct vstack_entry *stack_top, | |
118 | struct load_op *insn) | |
119 | { | |
120 | int ret; | |
121 | ||
122 | switch (stack_top->load.type) { | |
123 | case LOAD_OBJECT: | |
124 | break; | |
125 | case LOAD_ROOT_CONTEXT: | |
126 | case LOAD_ROOT_APP_CONTEXT: | |
127 | case LOAD_ROOT_PAYLOAD: | |
128 | default: | |
129 | dbg_printf("Filter warning: cannot load root, missing field name.\n"); | |
130 | ret = -EINVAL; | |
131 | goto end; | |
132 | } | |
133 | switch (stack_top->load.object_type) { | |
134 | case OBJECT_TYPE_S8: | |
135 | dbg_printf("op load field s8\n"); | |
136 | stack_top->type = REG_S64; | |
137 | if (!stack_top->load.rev_bo) | |
138 | insn->op = FILTER_OP_LOAD_FIELD_S8; | |
139 | break; | |
140 | case OBJECT_TYPE_S16: | |
141 | dbg_printf("op load field s16\n"); | |
142 | stack_top->type = REG_S64; | |
143 | if (!stack_top->load.rev_bo) | |
144 | insn->op = FILTER_OP_LOAD_FIELD_S16; | |
145 | break; | |
146 | case OBJECT_TYPE_S32: | |
147 | dbg_printf("op load field s32\n"); | |
148 | stack_top->type = REG_S64; | |
149 | if (!stack_top->load.rev_bo) | |
150 | insn->op = FILTER_OP_LOAD_FIELD_S32; | |
151 | break; | |
152 | case OBJECT_TYPE_S64: | |
153 | dbg_printf("op load field s64\n"); | |
154 | stack_top->type = REG_S64; | |
155 | if (!stack_top->load.rev_bo) | |
156 | insn->op = FILTER_OP_LOAD_FIELD_S64; | |
157 | break; | |
158 | case OBJECT_TYPE_U8: | |
159 | dbg_printf("op load field u8\n"); | |
160 | stack_top->type = REG_S64; | |
161 | insn->op = FILTER_OP_LOAD_FIELD_U8; | |
162 | break; | |
163 | case OBJECT_TYPE_U16: | |
164 | dbg_printf("op load field u16\n"); | |
165 | stack_top->type = REG_S64; | |
166 | if (!stack_top->load.rev_bo) | |
167 | insn->op = FILTER_OP_LOAD_FIELD_U16; | |
168 | break; | |
169 | case OBJECT_TYPE_U32: | |
170 | dbg_printf("op load field u32\n"); | |
171 | stack_top->type = REG_S64; | |
172 | if (!stack_top->load.rev_bo) | |
173 | insn->op = FILTER_OP_LOAD_FIELD_U32; | |
174 | break; | |
175 | case OBJECT_TYPE_U64: | |
176 | dbg_printf("op load field u64\n"); | |
177 | stack_top->type = REG_S64; | |
178 | if (!stack_top->load.rev_bo) | |
179 | insn->op = FILTER_OP_LOAD_FIELD_U64; | |
180 | break; | |
181 | case OBJECT_TYPE_DOUBLE: | |
182 | stack_top->type = REG_DOUBLE; | |
183 | insn->op = FILTER_OP_LOAD_FIELD_DOUBLE; | |
184 | break; | |
185 | case OBJECT_TYPE_STRING: | |
186 | dbg_printf("op load field string\n"); | |
187 | stack_top->type = REG_STRING; | |
188 | insn->op = FILTER_OP_LOAD_FIELD_STRING; | |
189 | break; | |
190 | case OBJECT_TYPE_STRING_SEQUENCE: | |
191 | dbg_printf("op load field string sequence\n"); | |
192 | stack_top->type = REG_STRING; | |
193 | insn->op = FILTER_OP_LOAD_FIELD_SEQUENCE; | |
194 | break; | |
195 | case OBJECT_TYPE_DYNAMIC: | |
196 | dbg_printf("op load field dynamic\n"); | |
197 | stack_top->type = REG_UNKNOWN; | |
198 | /* Don't specialize load op. */ | |
199 | break; | |
200 | case OBJECT_TYPE_SEQUENCE: | |
201 | case OBJECT_TYPE_ARRAY: | |
202 | case OBJECT_TYPE_STRUCT: | |
203 | case OBJECT_TYPE_VARIANT: | |
204 | ERR("Sequences, arrays, struct and variant cannot be loaded (nested types)."); | |
205 | ret = -EINVAL; | |
206 | goto end; | |
207 | } | |
208 | return 0; | |
209 | ||
210 | end: | |
211 | return ret; | |
212 | } | |
213 | ||
214 | static int specialize_get_index_object_type(enum object_type *otype, | |
215 | int signedness, uint32_t elem_len) | |
216 | { | |
217 | switch (elem_len) { | |
218 | case 8: | |
219 | if (signedness) | |
220 | *otype = OBJECT_TYPE_S8; | |
221 | else | |
222 | *otype = OBJECT_TYPE_U8; | |
223 | break; | |
224 | case 16: | |
225 | if (signedness) | |
226 | *otype = OBJECT_TYPE_S16; | |
227 | else | |
228 | *otype = OBJECT_TYPE_U16; | |
229 | break; | |
230 | case 32: | |
231 | if (signedness) | |
232 | *otype = OBJECT_TYPE_S32; | |
233 | else | |
234 | *otype = OBJECT_TYPE_U32; | |
235 | break; | |
236 | case 64: | |
237 | if (signedness) | |
238 | *otype = OBJECT_TYPE_S64; | |
239 | else | |
240 | *otype = OBJECT_TYPE_U64; | |
241 | break; | |
242 | default: | |
243 | return -EINVAL; | |
244 | } | |
245 | return 0; | |
246 | } | |
247 | ||
248 | static int specialize_get_index(struct bytecode_runtime *runtime, | |
249 | struct load_op *insn, uint64_t index, | |
250 | struct vstack_entry *stack_top, | |
251 | int idx_len) | |
252 | { | |
253 | int ret; | |
254 | struct filter_get_index_data gid; | |
255 | ssize_t data_offset; | |
256 | ||
257 | memset(&gid, 0, sizeof(gid)); | |
258 | switch (stack_top->load.type) { | |
259 | case LOAD_OBJECT: | |
260 | switch (stack_top->load.object_type) { | |
261 | case OBJECT_TYPE_ARRAY: | |
262 | { | |
218deb69 | 263 | const struct lttng_integer_type *integer_type; |
47e5f13e MD |
264 | const struct lttng_event_field *field; |
265 | uint32_t elem_len, num_elems; | |
266 | int signedness; | |
267 | ||
268 | field = stack_top->load.field; | |
218deb69 MD |
269 | switch (field->type.atype) { |
270 | case atype_array: | |
271 | integer_type = &field->type.u.legacy.array.elem_type.u.basic.integer; | |
272 | num_elems = field->type.u.legacy.array.length; | |
273 | break; | |
274 | case atype_array_nestable: | |
275 | if (field->type.u.array_nestable.elem_type->atype != atype_integer) { | |
276 | ret = -EINVAL; | |
277 | goto end; | |
278 | } | |
279 | integer_type = &field->type.u.array_nestable.elem_type->u.integer; | |
280 | num_elems = field->type.u.array_nestable.length; | |
281 | break; | |
282 | default: | |
283 | ret = -EINVAL; | |
284 | goto end; | |
285 | } | |
286 | elem_len = integer_type->size; | |
287 | signedness = integer_type->signedness; | |
47e5f13e MD |
288 | if (index >= num_elems) { |
289 | ret = -EINVAL; | |
290 | goto end; | |
291 | } | |
292 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
293 | signedness, elem_len); | |
294 | if (ret) | |
295 | goto end; | |
296 | gid.offset = index * (elem_len / CHAR_BIT); | |
297 | gid.array_len = num_elems * (elem_len / CHAR_BIT); | |
298 | gid.elem.type = stack_top->load.object_type; | |
299 | gid.elem.len = elem_len; | |
218deb69 | 300 | if (integer_type->reverse_byte_order) |
47e5f13e MD |
301 | gid.elem.rev_bo = true; |
302 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
303 | break; | |
304 | } | |
305 | case OBJECT_TYPE_SEQUENCE: | |
306 | { | |
218deb69 | 307 | const struct lttng_integer_type *integer_type; |
47e5f13e MD |
308 | const struct lttng_event_field *field; |
309 | uint32_t elem_len; | |
310 | int signedness; | |
311 | ||
312 | field = stack_top->load.field; | |
218deb69 MD |
313 | switch (field->type.atype) { |
314 | case atype_sequence: | |
315 | integer_type = &field->type.u.legacy.sequence.elem_type.u.basic.integer; | |
316 | break; | |
317 | case atype_sequence_nestable: | |
318 | if (field->type.u.sequence_nestable.elem_type->atype != atype_integer) { | |
319 | ret = -EINVAL; | |
320 | goto end; | |
321 | } | |
322 | integer_type = &field->type.u.sequence_nestable.elem_type->u.integer; | |
323 | break; | |
324 | default: | |
325 | ret = -EINVAL; | |
326 | goto end; | |
327 | } | |
328 | elem_len = integer_type->size; | |
329 | signedness = integer_type->signedness; | |
47e5f13e MD |
330 | ret = specialize_get_index_object_type(&stack_top->load.object_type, |
331 | signedness, elem_len); | |
332 | if (ret) | |
333 | goto end; | |
334 | gid.offset = index * (elem_len / CHAR_BIT); | |
335 | gid.elem.type = stack_top->load.object_type; | |
336 | gid.elem.len = elem_len; | |
218deb69 | 337 | if (integer_type->reverse_byte_order) |
47e5f13e MD |
338 | gid.elem.rev_bo = true; |
339 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
340 | break; | |
341 | } | |
342 | case OBJECT_TYPE_STRUCT: | |
343 | /* Only generated by the specialize phase. */ | |
344 | case OBJECT_TYPE_VARIANT: /* Fall-through */ | |
345 | default: | |
346 | ERR("Unexpected get index type %d", | |
347 | (int) stack_top->load.object_type); | |
348 | ret = -EINVAL; | |
349 | goto end; | |
350 | } | |
351 | break; | |
352 | case LOAD_ROOT_CONTEXT: | |
353 | case LOAD_ROOT_APP_CONTEXT: | |
354 | case LOAD_ROOT_PAYLOAD: | |
355 | ERR("Index lookup for root field not implemented yet."); | |
356 | ret = -EINVAL; | |
357 | goto end; | |
358 | } | |
359 | data_offset = bytecode_push_data(runtime, &gid, | |
360 | __alignof__(gid), sizeof(gid)); | |
361 | if (data_offset < 0) { | |
362 | ret = -EINVAL; | |
363 | goto end; | |
364 | } | |
365 | switch (idx_len) { | |
366 | case 2: | |
367 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
368 | break; | |
369 | case 8: | |
370 | ((struct get_index_u64 *) insn->data)->index = data_offset; | |
371 | break; | |
372 | default: | |
373 | ret = -EINVAL; | |
374 | goto end; | |
375 | } | |
376 | ||
377 | return 0; | |
378 | ||
379 | end: | |
380 | return ret; | |
381 | } | |
382 | ||
383 | static int specialize_context_lookup_name(struct lttng_ctx *ctx, | |
384 | struct bytecode_runtime *bytecode, | |
385 | struct load_op *insn) | |
386 | { | |
387 | uint16_t offset; | |
388 | const char *name; | |
389 | ||
390 | offset = ((struct get_symbol *) insn->data)->offset; | |
391 | name = bytecode->p.bc->bc.data + bytecode->p.bc->bc.reloc_offset + offset; | |
392 | return lttng_get_context_index(ctx, name); | |
393 | } | |
394 | ||
395 | static int specialize_load_object(const struct lttng_event_field *field, | |
396 | struct vstack_load *load, bool is_context) | |
397 | { | |
398 | load->type = LOAD_OBJECT; | |
399 | /* | |
400 | * LTTng-UST layout all integer fields as s64 on the stack for the filter. | |
401 | */ | |
402 | switch (field->type.atype) { | |
403 | case atype_integer: | |
218deb69 | 404 | if (field->type.u.integer.signedness) |
47e5f13e MD |
405 | load->object_type = OBJECT_TYPE_S64; |
406 | else | |
407 | load->object_type = OBJECT_TYPE_U64; | |
408 | load->rev_bo = false; | |
409 | break; | |
410 | case atype_enum: | |
218deb69 | 411 | case atype_enum_nestable: |
47e5f13e | 412 | { |
218deb69 | 413 | const struct lttng_integer_type *itype; |
47e5f13e | 414 | |
218deb69 MD |
415 | if (field->type.atype == atype_enum) { |
416 | itype = &field->type.u.legacy.basic.enumeration.container_type; | |
417 | } else { | |
418 | itype = &field->type.u.enum_nestable.container_type->u.integer; | |
419 | } | |
47e5f13e MD |
420 | if (itype->signedness) |
421 | load->object_type = OBJECT_TYPE_S64; | |
422 | else | |
423 | load->object_type = OBJECT_TYPE_U64; | |
424 | load->rev_bo = false; | |
425 | break; | |
426 | } | |
427 | case atype_array: | |
218deb69 MD |
428 | if (field->type.u.legacy.array.elem_type.atype != atype_integer) { |
429 | ERR("Array nesting only supports integer types."); | |
430 | return -EINVAL; | |
431 | } | |
432 | if (is_context) { | |
433 | load->object_type = OBJECT_TYPE_STRING; | |
434 | } else { | |
435 | if (field->type.u.legacy.array.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
436 | load->object_type = OBJECT_TYPE_ARRAY; | |
437 | load->field = field; | |
438 | } else { | |
439 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
440 | } | |
441 | } | |
442 | break; | |
443 | case atype_array_nestable: | |
444 | if (field->type.u.array_nestable.elem_type->atype != atype_integer) { | |
47e5f13e MD |
445 | ERR("Array nesting only supports integer types."); |
446 | return -EINVAL; | |
447 | } | |
448 | if (is_context) { | |
449 | load->object_type = OBJECT_TYPE_STRING; | |
450 | } else { | |
218deb69 | 451 | if (field->type.u.array_nestable.elem_type->u.integer.encoding == lttng_encode_none) { |
47e5f13e MD |
452 | load->object_type = OBJECT_TYPE_ARRAY; |
453 | load->field = field; | |
454 | } else { | |
455 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
456 | } | |
457 | } | |
458 | break; | |
459 | case atype_sequence: | |
218deb69 MD |
460 | if (field->type.u.legacy.sequence.elem_type.atype != atype_integer) { |
461 | ERR("Sequence nesting only supports integer types."); | |
462 | return -EINVAL; | |
463 | } | |
464 | if (is_context) { | |
465 | load->object_type = OBJECT_TYPE_STRING; | |
466 | } else { | |
467 | if (field->type.u.legacy.sequence.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
468 | load->object_type = OBJECT_TYPE_SEQUENCE; | |
469 | load->field = field; | |
470 | } else { | |
471 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
472 | } | |
473 | } | |
474 | break; | |
475 | case atype_sequence_nestable: | |
476 | if (field->type.u.sequence_nestable.elem_type->atype != atype_integer) { | |
47e5f13e MD |
477 | ERR("Sequence nesting only supports integer types."); |
478 | return -EINVAL; | |
479 | } | |
480 | if (is_context) { | |
481 | load->object_type = OBJECT_TYPE_STRING; | |
482 | } else { | |
218deb69 | 483 | if (field->type.u.sequence_nestable.elem_type->u.integer.encoding == lttng_encode_none) { |
47e5f13e MD |
484 | load->object_type = OBJECT_TYPE_SEQUENCE; |
485 | load->field = field; | |
486 | } else { | |
487 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
488 | } | |
489 | } | |
490 | break; | |
218deb69 | 491 | |
47e5f13e MD |
492 | case atype_string: |
493 | load->object_type = OBJECT_TYPE_STRING; | |
494 | break; | |
495 | case atype_float: | |
496 | load->object_type = OBJECT_TYPE_DOUBLE; | |
497 | break; | |
498 | case atype_dynamic: | |
499 | load->object_type = OBJECT_TYPE_DYNAMIC; | |
8d3190bd | 500 | break; |
47e5f13e MD |
501 | case atype_struct: |
502 | ERR("Structure type cannot be loaded."); | |
503 | return -EINVAL; | |
504 | default: | |
505 | ERR("Unknown type: %d", (int) field->type.atype); | |
506 | return -EINVAL; | |
507 | } | |
508 | return 0; | |
509 | } | |
510 | ||
b77aaa1b | 511 | static int specialize_context_lookup(struct lttng_ctx *ctx, |
47e5f13e MD |
512 | struct bytecode_runtime *runtime, |
513 | struct load_op *insn, | |
514 | struct vstack_load *load) | |
515 | { | |
516 | int idx, ret; | |
517 | struct lttng_ctx_field *ctx_field; | |
518 | struct lttng_event_field *field; | |
519 | struct filter_get_index_data gid; | |
520 | ssize_t data_offset; | |
521 | ||
b77aaa1b | 522 | idx = specialize_context_lookup_name(ctx, runtime, insn); |
47e5f13e MD |
523 | if (idx < 0) { |
524 | return -ENOENT; | |
525 | } | |
b77aaa1b | 526 | ctx_field = &ctx->fields[idx]; |
47e5f13e MD |
527 | field = &ctx_field->event_field; |
528 | ret = specialize_load_object(field, load, true); | |
529 | if (ret) | |
530 | return ret; | |
531 | /* Specialize each get_symbol into a get_index. */ | |
532 | insn->op = FILTER_OP_GET_INDEX_U16; | |
533 | memset(&gid, 0, sizeof(gid)); | |
534 | gid.ctx_index = idx; | |
535 | gid.elem.type = load->object_type; | |
536 | data_offset = bytecode_push_data(runtime, &gid, | |
537 | __alignof__(gid), sizeof(gid)); | |
538 | if (data_offset < 0) { | |
539 | return -EINVAL; | |
540 | } | |
541 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
542 | return 0; | |
543 | } | |
544 | ||
b77aaa1b | 545 | static int specialize_app_context_lookup(struct lttng_ctx **pctx, |
47e5f13e MD |
546 | struct bytecode_runtime *runtime, |
547 | struct load_op *insn, | |
548 | struct vstack_load *load) | |
549 | { | |
550 | uint16_t offset; | |
551 | const char *orig_name; | |
552 | char *name = NULL; | |
553 | int idx, ret; | |
554 | struct lttng_ctx_field *ctx_field; | |
555 | struct lttng_event_field *field; | |
556 | struct filter_get_index_data gid; | |
557 | ssize_t data_offset; | |
558 | ||
559 | offset = ((struct get_symbol *) insn->data)->offset; | |
560 | orig_name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
561 | name = zmalloc(strlen(orig_name) + strlen("$app.") + 1); | |
562 | if (!name) { | |
563 | ret = -ENOMEM; | |
564 | goto end; | |
565 | } | |
566 | strcpy(name, "$app."); | |
567 | strcat(name, orig_name); | |
b77aaa1b | 568 | idx = lttng_get_context_index(*pctx, name); |
47e5f13e MD |
569 | if (idx < 0) { |
570 | assert(lttng_context_is_app(name)); | |
571 | ret = lttng_ust_add_app_context_to_ctx_rcu(name, | |
b77aaa1b | 572 | pctx); |
47e5f13e MD |
573 | if (ret) |
574 | return ret; | |
b77aaa1b | 575 | idx = lttng_get_context_index(*pctx, name); |
47e5f13e MD |
576 | if (idx < 0) |
577 | return -ENOENT; | |
578 | } | |
b77aaa1b | 579 | ctx_field = &(*pctx)->fields[idx]; |
47e5f13e MD |
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 | ||
53b9d7db | 602 | static int specialize_payload_lookup(const struct lttng_event_desc *event_desc, |
47e5f13e MD |
603 | struct bytecode_runtime *runtime, |
604 | struct load_op *insn, | |
605 | struct vstack_load *load) | |
606 | { | |
607 | const char *name; | |
608 | uint16_t offset; | |
47e5f13e MD |
609 | unsigned int i, nr_fields; |
610 | bool found = false; | |
611 | uint32_t field_offset = 0; | |
612 | const struct lttng_event_field *field; | |
613 | int ret; | |
614 | struct filter_get_index_data gid; | |
615 | ssize_t data_offset; | |
616 | ||
53b9d7db | 617 | nr_fields = event_desc->nr_fields; |
47e5f13e MD |
618 | offset = ((struct get_symbol *) insn->data)->offset; |
619 | name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
620 | for (i = 0; i < nr_fields; i++) { | |
53b9d7db | 621 | field = &event_desc->fields[i]; |
218deb69 MD |
622 | if (field->u.ext.nofilter) { |
623 | continue; | |
624 | } | |
47e5f13e MD |
625 | if (!strcmp(field->name, name)) { |
626 | found = true; | |
627 | break; | |
628 | } | |
629 | /* compute field offset on stack */ | |
630 | switch (field->type.atype) { | |
631 | case atype_integer: | |
632 | case atype_enum: | |
218deb69 | 633 | case atype_enum_nestable: |
47e5f13e MD |
634 | field_offset += sizeof(int64_t); |
635 | break; | |
636 | case atype_array: | |
218deb69 | 637 | case atype_array_nestable: |
47e5f13e | 638 | case atype_sequence: |
218deb69 | 639 | case atype_sequence_nestable: |
47e5f13e MD |
640 | field_offset += sizeof(unsigned long); |
641 | field_offset += sizeof(void *); | |
642 | break; | |
643 | case atype_string: | |
644 | field_offset += sizeof(void *); | |
645 | break; | |
646 | case atype_float: | |
647 | field_offset += sizeof(double); | |
648 | break; | |
649 | default: | |
650 | ret = -EINVAL; | |
651 | goto end; | |
652 | } | |
653 | } | |
654 | if (!found) { | |
655 | ret = -EINVAL; | |
656 | goto end; | |
657 | } | |
658 | ||
659 | ret = specialize_load_object(field, load, false); | |
660 | if (ret) | |
661 | goto end; | |
662 | ||
663 | /* Specialize each get_symbol into a get_index. */ | |
664 | insn->op = FILTER_OP_GET_INDEX_U16; | |
665 | memset(&gid, 0, sizeof(gid)); | |
666 | gid.offset = field_offset; | |
667 | gid.elem.type = load->object_type; | |
668 | data_offset = bytecode_push_data(runtime, &gid, | |
669 | __alignof__(gid), sizeof(gid)); | |
670 | if (data_offset < 0) { | |
671 | ret = -EINVAL; | |
672 | goto end; | |
673 | } | |
674 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
675 | ret = 0; | |
676 | end: | |
677 | return ret; | |
678 | } | |
679 | ||
53b9d7db | 680 | int lttng_filter_specialize_bytecode(const struct lttng_event_desc *event_desc, |
47e5f13e | 681 | struct bytecode_runtime *bytecode) |
97b58163 MD |
682 | { |
683 | void *pc, *next_pc, *start_pc; | |
684 | int ret = -EINVAL; | |
0305960f MD |
685 | struct vstack _stack; |
686 | struct vstack *stack = &_stack; | |
b77aaa1b | 687 | struct lttng_ctx **pctx = bytecode->p.pctx; |
97b58163 | 688 | |
0305960f | 689 | vstack_init(stack); |
97b58163 | 690 | |
47e5f13e | 691 | start_pc = &bytecode->code[0]; |
97b58163 MD |
692 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; |
693 | pc = next_pc) { | |
694 | switch (*(filter_opcode_t *) pc) { | |
695 | case FILTER_OP_UNKNOWN: | |
696 | default: | |
697 | ERR("unknown bytecode op %u\n", | |
698 | (unsigned int) *(filter_opcode_t *) pc); | |
699 | ret = -EINVAL; | |
700 | goto end; | |
701 | ||
702 | case FILTER_OP_RETURN: | |
93c591bb MD |
703 | if (vstack_ax(stack)->type == REG_S64) |
704 | *(filter_opcode_t *) pc = FILTER_OP_RETURN_S64; | |
705 | ret = 0; | |
706 | goto end; | |
707 | ||
708 | case FILTER_OP_RETURN_S64: | |
709 | if (vstack_ax(stack)->type != REG_S64) { | |
710 | ERR("Unexpected register type\n"); | |
711 | ret = -EINVAL; | |
712 | goto end; | |
713 | } | |
97b58163 MD |
714 | ret = 0; |
715 | goto end; | |
716 | ||
717 | /* binary */ | |
718 | case FILTER_OP_MUL: | |
719 | case FILTER_OP_DIV: | |
720 | case FILTER_OP_MOD: | |
721 | case FILTER_OP_PLUS: | |
722 | case FILTER_OP_MINUS: | |
97b58163 MD |
723 | ERR("unsupported bytecode op %u\n", |
724 | (unsigned int) *(filter_opcode_t *) pc); | |
725 | ret = -EINVAL; | |
726 | goto end; | |
727 | ||
728 | case FILTER_OP_EQ: | |
729 | { | |
730 | struct binary_op *insn = (struct binary_op *) pc; | |
731 | ||
0305960f | 732 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
733 | default: |
734 | ERR("unknown register type\n"); | |
735 | ret = -EINVAL; | |
736 | goto end; | |
737 | ||
738 | case REG_STRING: | |
53569322 MD |
739 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
740 | break; | |
3151a51d PP |
741 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
742 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
743 | else | |
744 | insn->op = FILTER_OP_EQ_STRING; | |
745 | break; | |
746 | case REG_STAR_GLOB_STRING: | |
747 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
748 | break; | |
749 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
97b58163 MD |
750 | break; |
751 | case REG_S64: | |
53569322 MD |
752 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
753 | break; | |
0305960f | 754 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
755 | insn->op = FILTER_OP_EQ_S64; |
756 | else | |
dbea82ec | 757 | insn->op = FILTER_OP_EQ_DOUBLE_S64; |
97b58163 MD |
758 | break; |
759 | case REG_DOUBLE: | |
53569322 MD |
760 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
761 | break; | |
dbea82ec MD |
762 | if (vstack_bx(stack)->type == REG_S64) |
763 | insn->op = FILTER_OP_EQ_S64_DOUBLE; | |
764 | else | |
765 | insn->op = FILTER_OP_EQ_DOUBLE; | |
97b58163 | 766 | break; |
53569322 MD |
767 | case REG_UNKNOWN: |
768 | break; /* Dynamic typing. */ | |
97b58163 | 769 | } |
0305960f MD |
770 | /* Pop 2, push 1 */ |
771 | if (vstack_pop(stack)) { | |
772 | ret = -EINVAL; | |
773 | goto end; | |
774 | } | |
775 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
776 | next_pc += sizeof(struct binary_op); |
777 | break; | |
778 | } | |
779 | ||
780 | case FILTER_OP_NE: | |
781 | { | |
782 | struct binary_op *insn = (struct binary_op *) pc; | |
783 | ||
0305960f | 784 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
785 | default: |
786 | ERR("unknown register type\n"); | |
787 | ret = -EINVAL; | |
788 | goto end; | |
789 | ||
790 | case REG_STRING: | |
53569322 MD |
791 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
792 | break; | |
3151a51d PP |
793 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
794 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
795 | else | |
796 | insn->op = FILTER_OP_NE_STRING; | |
797 | break; | |
798 | case REG_STAR_GLOB_STRING: | |
799 | if (vstack_bx(stack)->type == REG_UNKNOWN) | |
800 | break; | |
801 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
97b58163 MD |
802 | break; |
803 | case REG_S64: | |
53569322 MD |
804 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
805 | break; | |
0305960f | 806 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
807 | insn->op = FILTER_OP_NE_S64; |
808 | else | |
dbea82ec | 809 | insn->op = FILTER_OP_NE_DOUBLE_S64; |
97b58163 MD |
810 | break; |
811 | case REG_DOUBLE: | |
53569322 MD |
812 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
813 | break; | |
dbea82ec MD |
814 | if (vstack_bx(stack)->type == REG_S64) |
815 | insn->op = FILTER_OP_NE_S64_DOUBLE; | |
816 | else | |
817 | insn->op = FILTER_OP_NE_DOUBLE; | |
97b58163 | 818 | break; |
53569322 MD |
819 | case REG_UNKNOWN: |
820 | break; /* Dynamic typing. */ | |
97b58163 | 821 | } |
0305960f MD |
822 | /* Pop 2, push 1 */ |
823 | if (vstack_pop(stack)) { | |
824 | ret = -EINVAL; | |
825 | goto end; | |
826 | } | |
827 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
828 | next_pc += sizeof(struct binary_op); |
829 | break; | |
830 | } | |
831 | ||
832 | case FILTER_OP_GT: | |
833 | { | |
834 | struct binary_op *insn = (struct binary_op *) pc; | |
835 | ||
0305960f | 836 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
837 | default: |
838 | ERR("unknown register type\n"); | |
839 | ret = -EINVAL; | |
840 | goto end; | |
841 | ||
3151a51d PP |
842 | case REG_STAR_GLOB_STRING: |
843 | ERR("invalid register type for > binary operator\n"); | |
844 | ret = -EINVAL; | |
845 | goto end; | |
97b58163 | 846 | case REG_STRING: |
53569322 MD |
847 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
848 | break; | |
97b58163 MD |
849 | insn->op = FILTER_OP_GT_STRING; |
850 | break; | |
851 | case REG_S64: | |
53569322 MD |
852 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
853 | break; | |
0305960f | 854 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
855 | insn->op = FILTER_OP_GT_S64; |
856 | else | |
dbea82ec | 857 | insn->op = FILTER_OP_GT_DOUBLE_S64; |
97b58163 MD |
858 | break; |
859 | case REG_DOUBLE: | |
53569322 MD |
860 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
861 | break; | |
dbea82ec MD |
862 | if (vstack_bx(stack)->type == REG_S64) |
863 | insn->op = FILTER_OP_GT_S64_DOUBLE; | |
864 | else | |
865 | insn->op = FILTER_OP_GT_DOUBLE; | |
97b58163 | 866 | break; |
53569322 MD |
867 | case REG_UNKNOWN: |
868 | break; /* Dynamic typing. */ | |
97b58163 | 869 | } |
0305960f MD |
870 | /* Pop 2, push 1 */ |
871 | if (vstack_pop(stack)) { | |
872 | ret = -EINVAL; | |
873 | goto end; | |
874 | } | |
875 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
876 | next_pc += sizeof(struct binary_op); |
877 | break; | |
878 | } | |
879 | ||
880 | case FILTER_OP_LT: | |
881 | { | |
882 | struct binary_op *insn = (struct binary_op *) pc; | |
883 | ||
0305960f | 884 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
885 | default: |
886 | ERR("unknown register type\n"); | |
887 | ret = -EINVAL; | |
888 | goto end; | |
889 | ||
3151a51d PP |
890 | case REG_STAR_GLOB_STRING: |
891 | ERR("invalid register type for < binary operator\n"); | |
892 | ret = -EINVAL; | |
893 | goto end; | |
97b58163 | 894 | case REG_STRING: |
53569322 MD |
895 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
896 | break; | |
97b58163 MD |
897 | insn->op = FILTER_OP_LT_STRING; |
898 | break; | |
899 | case REG_S64: | |
53569322 MD |
900 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
901 | break; | |
0305960f | 902 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
903 | insn->op = FILTER_OP_LT_S64; |
904 | else | |
dbea82ec | 905 | insn->op = FILTER_OP_LT_DOUBLE_S64; |
97b58163 MD |
906 | break; |
907 | case REG_DOUBLE: | |
53569322 MD |
908 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
909 | break; | |
dbea82ec MD |
910 | if (vstack_bx(stack)->type == REG_S64) |
911 | insn->op = FILTER_OP_LT_S64_DOUBLE; | |
912 | else | |
913 | insn->op = FILTER_OP_LT_DOUBLE; | |
97b58163 | 914 | break; |
53569322 MD |
915 | case REG_UNKNOWN: |
916 | break; /* Dynamic typing. */ | |
97b58163 | 917 | } |
0305960f MD |
918 | /* Pop 2, push 1 */ |
919 | if (vstack_pop(stack)) { | |
920 | ret = -EINVAL; | |
921 | goto end; | |
922 | } | |
923 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
924 | next_pc += sizeof(struct binary_op); |
925 | break; | |
926 | } | |
927 | ||
928 | case FILTER_OP_GE: | |
929 | { | |
930 | struct binary_op *insn = (struct binary_op *) pc; | |
931 | ||
0305960f | 932 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
933 | default: |
934 | ERR("unknown register type\n"); | |
935 | ret = -EINVAL; | |
936 | goto end; | |
937 | ||
3151a51d PP |
938 | case REG_STAR_GLOB_STRING: |
939 | ERR("invalid register type for >= binary operator\n"); | |
940 | ret = -EINVAL; | |
941 | goto end; | |
97b58163 | 942 | case REG_STRING: |
53569322 MD |
943 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
944 | break; | |
97b58163 MD |
945 | insn->op = FILTER_OP_GE_STRING; |
946 | break; | |
947 | case REG_S64: | |
53569322 MD |
948 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
949 | break; | |
0305960f | 950 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
951 | insn->op = FILTER_OP_GE_S64; |
952 | else | |
dbea82ec | 953 | insn->op = FILTER_OP_GE_DOUBLE_S64; |
97b58163 MD |
954 | break; |
955 | case REG_DOUBLE: | |
53569322 MD |
956 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
957 | break; | |
dbea82ec MD |
958 | if (vstack_bx(stack)->type == REG_S64) |
959 | insn->op = FILTER_OP_GE_S64_DOUBLE; | |
960 | else | |
961 | insn->op = FILTER_OP_GE_DOUBLE; | |
97b58163 | 962 | break; |
53569322 MD |
963 | case REG_UNKNOWN: |
964 | break; /* Dynamic typing. */ | |
97b58163 | 965 | } |
0305960f MD |
966 | /* Pop 2, push 1 */ |
967 | if (vstack_pop(stack)) { | |
968 | ret = -EINVAL; | |
969 | goto end; | |
970 | } | |
971 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
972 | next_pc += sizeof(struct binary_op); |
973 | break; | |
974 | } | |
975 | case FILTER_OP_LE: | |
976 | { | |
977 | struct binary_op *insn = (struct binary_op *) pc; | |
978 | ||
0305960f | 979 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
980 | default: |
981 | ERR("unknown register type\n"); | |
982 | ret = -EINVAL; | |
983 | goto end; | |
984 | ||
3151a51d PP |
985 | case REG_STAR_GLOB_STRING: |
986 | ERR("invalid register type for <= binary operator\n"); | |
987 | ret = -EINVAL; | |
988 | goto end; | |
97b58163 | 989 | case REG_STRING: |
53569322 MD |
990 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
991 | break; | |
97b58163 MD |
992 | insn->op = FILTER_OP_LE_STRING; |
993 | break; | |
994 | case REG_S64: | |
53569322 MD |
995 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
996 | break; | |
0305960f | 997 | if (vstack_bx(stack)->type == REG_S64) |
97b58163 MD |
998 | insn->op = FILTER_OP_LE_S64; |
999 | else | |
dbea82ec | 1000 | insn->op = FILTER_OP_LE_DOUBLE_S64; |
97b58163 MD |
1001 | break; |
1002 | case REG_DOUBLE: | |
53569322 MD |
1003 | if (vstack_bx(stack)->type == REG_UNKNOWN) |
1004 | break; | |
dbea82ec MD |
1005 | if (vstack_bx(stack)->type == REG_S64) |
1006 | insn->op = FILTER_OP_LE_S64_DOUBLE; | |
1007 | else | |
1008 | insn->op = FILTER_OP_LE_DOUBLE; | |
97b58163 | 1009 | break; |
53569322 MD |
1010 | case REG_UNKNOWN: |
1011 | break; /* Dynamic typing. */ | |
97b58163 | 1012 | } |
0305960f | 1013 | vstack_ax(stack)->type = REG_S64; |
97b58163 MD |
1014 | next_pc += sizeof(struct binary_op); |
1015 | break; | |
1016 | } | |
1017 | ||
1018 | case FILTER_OP_EQ_STRING: | |
1019 | case FILTER_OP_NE_STRING: | |
1020 | case FILTER_OP_GT_STRING: | |
1021 | case FILTER_OP_LT_STRING: | |
1022 | case FILTER_OP_GE_STRING: | |
1023 | case FILTER_OP_LE_STRING: | |
3151a51d PP |
1024 | case FILTER_OP_EQ_STAR_GLOB_STRING: |
1025 | case FILTER_OP_NE_STAR_GLOB_STRING: | |
97b58163 MD |
1026 | case FILTER_OP_EQ_S64: |
1027 | case FILTER_OP_NE_S64: | |
1028 | case FILTER_OP_GT_S64: | |
1029 | case FILTER_OP_LT_S64: | |
1030 | case FILTER_OP_GE_S64: | |
1031 | case FILTER_OP_LE_S64: | |
1032 | case FILTER_OP_EQ_DOUBLE: | |
1033 | case FILTER_OP_NE_DOUBLE: | |
1034 | case FILTER_OP_GT_DOUBLE: | |
1035 | case FILTER_OP_LT_DOUBLE: | |
1036 | case FILTER_OP_GE_DOUBLE: | |
1037 | case FILTER_OP_LE_DOUBLE: | |
dbea82ec MD |
1038 | case FILTER_OP_EQ_DOUBLE_S64: |
1039 | case FILTER_OP_NE_DOUBLE_S64: | |
1040 | case FILTER_OP_GT_DOUBLE_S64: | |
1041 | case FILTER_OP_LT_DOUBLE_S64: | |
1042 | case FILTER_OP_GE_DOUBLE_S64: | |
1043 | case FILTER_OP_LE_DOUBLE_S64: | |
1044 | case FILTER_OP_EQ_S64_DOUBLE: | |
1045 | case FILTER_OP_NE_S64_DOUBLE: | |
1046 | case FILTER_OP_GT_S64_DOUBLE: | |
1047 | case FILTER_OP_LT_S64_DOUBLE: | |
1048 | case FILTER_OP_GE_S64_DOUBLE: | |
1049 | case FILTER_OP_LE_S64_DOUBLE: | |
0039e2d8 MD |
1050 | case FILTER_OP_BIT_RSHIFT: |
1051 | case FILTER_OP_BIT_LSHIFT: | |
47e5f13e MD |
1052 | case FILTER_OP_BIT_AND: |
1053 | case FILTER_OP_BIT_OR: | |
1054 | case FILTER_OP_BIT_XOR: | |
97b58163 | 1055 | { |
0305960f MD |
1056 | /* Pop 2, push 1 */ |
1057 | if (vstack_pop(stack)) { | |
1058 | ret = -EINVAL; | |
1059 | goto end; | |
1060 | } | |
1061 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1062 | next_pc += sizeof(struct binary_op); |
1063 | break; | |
1064 | } | |
1065 | ||
1066 | /* unary */ | |
1067 | case FILTER_OP_UNARY_PLUS: | |
1068 | { | |
1069 | struct unary_op *insn = (struct unary_op *) pc; | |
1070 | ||
0305960f | 1071 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1072 | default: |
1073 | ERR("unknown register type\n"); | |
1074 | ret = -EINVAL; | |
1075 | goto end; | |
1076 | ||
1077 | case REG_S64: | |
1078 | insn->op = FILTER_OP_UNARY_PLUS_S64; | |
1079 | break; | |
1080 | case REG_DOUBLE: | |
1081 | insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; | |
1082 | break; | |
53569322 MD |
1083 | case REG_UNKNOWN: /* Dynamic typing. */ |
1084 | break; | |
97b58163 | 1085 | } |
0305960f | 1086 | /* Pop 1, push 1 */ |
97b58163 MD |
1087 | next_pc += sizeof(struct unary_op); |
1088 | break; | |
1089 | } | |
1090 | ||
1091 | case FILTER_OP_UNARY_MINUS: | |
1092 | { | |
1093 | struct unary_op *insn = (struct unary_op *) pc; | |
1094 | ||
0305960f | 1095 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1096 | default: |
1097 | ERR("unknown register type\n"); | |
1098 | ret = -EINVAL; | |
1099 | goto end; | |
1100 | ||
1101 | case REG_S64: | |
1102 | insn->op = FILTER_OP_UNARY_MINUS_S64; | |
1103 | break; | |
1104 | case REG_DOUBLE: | |
1105 | insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; | |
1106 | break; | |
53569322 MD |
1107 | case REG_UNKNOWN: /* Dynamic typing. */ |
1108 | break; | |
97b58163 | 1109 | } |
0305960f | 1110 | /* Pop 1, push 1 */ |
97b58163 MD |
1111 | next_pc += sizeof(struct unary_op); |
1112 | break; | |
1113 | } | |
1114 | ||
1115 | case FILTER_OP_UNARY_NOT: | |
1116 | { | |
1117 | struct unary_op *insn = (struct unary_op *) pc; | |
1118 | ||
0305960f | 1119 | switch(vstack_ax(stack)->type) { |
97b58163 MD |
1120 | default: |
1121 | ERR("unknown register type\n"); | |
1122 | ret = -EINVAL; | |
1123 | goto end; | |
1124 | ||
1125 | case REG_S64: | |
1126 | insn->op = FILTER_OP_UNARY_NOT_S64; | |
1127 | break; | |
1128 | case REG_DOUBLE: | |
1129 | insn->op = FILTER_OP_UNARY_NOT_DOUBLE; | |
1130 | break; | |
53569322 MD |
1131 | case REG_UNKNOWN: /* Dynamic typing. */ |
1132 | break; | |
97b58163 | 1133 | } |
0305960f | 1134 | /* Pop 1, push 1 */ |
97b58163 MD |
1135 | next_pc += sizeof(struct unary_op); |
1136 | break; | |
1137 | } | |
1138 | ||
0039e2d8 MD |
1139 | case FILTER_OP_UNARY_BIT_NOT: |
1140 | { | |
1141 | /* Pop 1, push 1 */ | |
1142 | next_pc += sizeof(struct unary_op); | |
1143 | break; | |
1144 | } | |
1145 | ||
97b58163 MD |
1146 | case FILTER_OP_UNARY_PLUS_S64: |
1147 | case FILTER_OP_UNARY_MINUS_S64: | |
1148 | case FILTER_OP_UNARY_NOT_S64: | |
1149 | case FILTER_OP_UNARY_PLUS_DOUBLE: | |
1150 | case FILTER_OP_UNARY_MINUS_DOUBLE: | |
1151 | case FILTER_OP_UNARY_NOT_DOUBLE: | |
1152 | { | |
0305960f | 1153 | /* Pop 1, push 1 */ |
97b58163 MD |
1154 | next_pc += sizeof(struct unary_op); |
1155 | break; | |
1156 | } | |
1157 | ||
1158 | /* logical */ | |
1159 | case FILTER_OP_AND: | |
1160 | case FILTER_OP_OR: | |
1161 | { | |
b9f4cd79 MD |
1162 | /* Continue to next instruction */ |
1163 | /* Pop 1 when jump not taken */ | |
1164 | if (vstack_pop(stack)) { | |
1165 | ret = -EINVAL; | |
1166 | goto end; | |
1167 | } | |
97b58163 MD |
1168 | next_pc += sizeof(struct logical_op); |
1169 | break; | |
1170 | } | |
1171 | ||
77aa5901 | 1172 | /* load field ref */ |
97b58163 MD |
1173 | case FILTER_OP_LOAD_FIELD_REF: |
1174 | { | |
1175 | ERR("Unknown field ref type\n"); | |
1176 | ret = -EINVAL; | |
1177 | goto end; | |
1178 | } | |
77aa5901 MD |
1179 | /* get context ref */ |
1180 | case FILTER_OP_GET_CONTEXT_REF: | |
1181 | { | |
53569322 MD |
1182 | if (vstack_push(stack)) { |
1183 | ret = -EINVAL; | |
1184 | goto end; | |
1185 | } | |
1186 | vstack_ax(stack)->type = REG_UNKNOWN; | |
1187 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1188 | break; | |
77aa5901 | 1189 | } |
97b58163 MD |
1190 | case FILTER_OP_LOAD_FIELD_REF_STRING: |
1191 | case FILTER_OP_LOAD_FIELD_REF_SEQUENCE: | |
77aa5901 | 1192 | case FILTER_OP_GET_CONTEXT_REF_STRING: |
97b58163 | 1193 | { |
0305960f MD |
1194 | if (vstack_push(stack)) { |
1195 | ret = -EINVAL; | |
1196 | goto end; | |
1197 | } | |
1198 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
1199 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1200 | break; | |
1201 | } | |
1202 | case FILTER_OP_LOAD_FIELD_REF_S64: | |
77aa5901 | 1203 | case FILTER_OP_GET_CONTEXT_REF_S64: |
97b58163 | 1204 | { |
0305960f MD |
1205 | if (vstack_push(stack)) { |
1206 | ret = -EINVAL; | |
1207 | goto end; | |
1208 | } | |
1209 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1210 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1211 | break; | |
1212 | } | |
1213 | case FILTER_OP_LOAD_FIELD_REF_DOUBLE: | |
77aa5901 | 1214 | case FILTER_OP_GET_CONTEXT_REF_DOUBLE: |
97b58163 | 1215 | { |
0305960f MD |
1216 | if (vstack_push(stack)) { |
1217 | ret = -EINVAL; | |
1218 | goto end; | |
1219 | } | |
1220 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
1221 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1222 | break; | |
1223 | } | |
1224 | ||
77aa5901 | 1225 | /* load from immediate operand */ |
97b58163 MD |
1226 | case FILTER_OP_LOAD_STRING: |
1227 | { | |
1228 | struct load_op *insn = (struct load_op *) pc; | |
1229 | ||
0305960f MD |
1230 | if (vstack_push(stack)) { |
1231 | ret = -EINVAL; | |
1232 | goto end; | |
1233 | } | |
1234 | vstack_ax(stack)->type = REG_STRING; | |
97b58163 MD |
1235 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
1236 | break; | |
1237 | } | |
1238 | ||
3151a51d PP |
1239 | case FILTER_OP_LOAD_STAR_GLOB_STRING: |
1240 | { | |
1241 | struct load_op *insn = (struct load_op *) pc; | |
1242 | ||
1243 | if (vstack_push(stack)) { | |
1244 | ret = -EINVAL; | |
1245 | goto end; | |
1246 | } | |
1247 | vstack_ax(stack)->type = REG_STAR_GLOB_STRING; | |
1248 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
1249 | break; | |
1250 | } | |
1251 | ||
97b58163 MD |
1252 | case FILTER_OP_LOAD_S64: |
1253 | { | |
0305960f MD |
1254 | if (vstack_push(stack)) { |
1255 | ret = -EINVAL; | |
1256 | goto end; | |
1257 | } | |
1258 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1259 | next_pc += sizeof(struct load_op) |
1260 | + sizeof(struct literal_numeric); | |
1261 | break; | |
1262 | } | |
1263 | ||
1264 | case FILTER_OP_LOAD_DOUBLE: | |
1265 | { | |
0305960f MD |
1266 | if (vstack_push(stack)) { |
1267 | ret = -EINVAL; | |
1268 | goto end; | |
1269 | } | |
1270 | vstack_ax(stack)->type = REG_DOUBLE; | |
97b58163 MD |
1271 | next_pc += sizeof(struct load_op) |
1272 | + sizeof(struct literal_double); | |
1273 | break; | |
1274 | } | |
1275 | ||
1276 | /* cast */ | |
1277 | case FILTER_OP_CAST_TO_S64: | |
1278 | { | |
1279 | struct cast_op *insn = (struct cast_op *) pc; | |
1280 | ||
0305960f | 1281 | switch (vstack_ax(stack)->type) { |
97b58163 MD |
1282 | default: |
1283 | ERR("unknown register type\n"); | |
1284 | ret = -EINVAL; | |
1285 | goto end; | |
1286 | ||
1287 | case REG_STRING: | |
3151a51d | 1288 | case REG_STAR_GLOB_STRING: |
97b58163 MD |
1289 | ERR("Cast op can only be applied to numeric or floating point registers\n"); |
1290 | ret = -EINVAL; | |
1291 | goto end; | |
1292 | case REG_S64: | |
1293 | insn->op = FILTER_OP_CAST_NOP; | |
1294 | break; | |
1295 | case REG_DOUBLE: | |
1296 | insn->op = FILTER_OP_CAST_DOUBLE_TO_S64; | |
1297 | break; | |
53569322 MD |
1298 | case REG_UNKNOWN: |
1299 | break; | |
97b58163 | 1300 | } |
0305960f MD |
1301 | /* Pop 1, push 1 */ |
1302 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1303 | next_pc += sizeof(struct cast_op); |
1304 | break; | |
1305 | } | |
1306 | case FILTER_OP_CAST_DOUBLE_TO_S64: | |
1307 | { | |
0305960f MD |
1308 | /* Pop 1, push 1 */ |
1309 | vstack_ax(stack)->type = REG_S64; | |
97b58163 MD |
1310 | next_pc += sizeof(struct cast_op); |
1311 | break; | |
1312 | } | |
1313 | case FILTER_OP_CAST_NOP: | |
1314 | { | |
1315 | next_pc += sizeof(struct cast_op); | |
1316 | break; | |
1317 | } | |
1318 | ||
47e5f13e MD |
1319 | /* |
1320 | * Instructions for recursive traversal through composed types. | |
1321 | */ | |
1322 | case FILTER_OP_GET_CONTEXT_ROOT: | |
1323 | { | |
1324 | if (vstack_push(stack)) { | |
1325 | ret = -EINVAL; | |
1326 | goto end; | |
1327 | } | |
1328 | vstack_ax(stack)->type = REG_PTR; | |
1329 | vstack_ax(stack)->load.type = LOAD_ROOT_CONTEXT; | |
1330 | next_pc += sizeof(struct load_op); | |
1331 | break; | |
1332 | } | |
1333 | case FILTER_OP_GET_APP_CONTEXT_ROOT: | |
1334 | { | |
1335 | if (vstack_push(stack)) { | |
1336 | ret = -EINVAL; | |
1337 | goto end; | |
1338 | } | |
1339 | vstack_ax(stack)->type = REG_PTR; | |
1340 | vstack_ax(stack)->load.type = LOAD_ROOT_APP_CONTEXT; | |
1341 | next_pc += sizeof(struct load_op); | |
1342 | break; | |
1343 | } | |
1344 | case FILTER_OP_GET_PAYLOAD_ROOT: | |
1345 | { | |
1346 | if (vstack_push(stack)) { | |
1347 | ret = -EINVAL; | |
1348 | goto end; | |
1349 | } | |
1350 | vstack_ax(stack)->type = REG_PTR; | |
1351 | vstack_ax(stack)->load.type = LOAD_ROOT_PAYLOAD; | |
1352 | next_pc += sizeof(struct load_op); | |
1353 | break; | |
1354 | } | |
1355 | ||
1356 | case FILTER_OP_LOAD_FIELD: | |
1357 | { | |
1358 | struct load_op *insn = (struct load_op *) pc; | |
1359 | ||
1360 | assert(vstack_ax(stack)->type == REG_PTR); | |
1361 | /* Pop 1, push 1 */ | |
1362 | ret = specialize_load_field(vstack_ax(stack), insn); | |
1363 | if (ret) | |
1364 | goto end; | |
1365 | ||
1366 | next_pc += sizeof(struct load_op); | |
1367 | break; | |
1368 | } | |
1369 | ||
1370 | case FILTER_OP_LOAD_FIELD_S8: | |
1371 | case FILTER_OP_LOAD_FIELD_S16: | |
1372 | case FILTER_OP_LOAD_FIELD_S32: | |
1373 | case FILTER_OP_LOAD_FIELD_S64: | |
1374 | case FILTER_OP_LOAD_FIELD_U8: | |
1375 | case FILTER_OP_LOAD_FIELD_U16: | |
1376 | case FILTER_OP_LOAD_FIELD_U32: | |
1377 | case FILTER_OP_LOAD_FIELD_U64: | |
1378 | { | |
1379 | /* Pop 1, push 1 */ | |
1380 | vstack_ax(stack)->type = REG_S64; | |
1381 | next_pc += sizeof(struct load_op); | |
1382 | break; | |
1383 | } | |
1384 | ||
1385 | case FILTER_OP_LOAD_FIELD_STRING: | |
1386 | case FILTER_OP_LOAD_FIELD_SEQUENCE: | |
1387 | { | |
1388 | /* Pop 1, push 1 */ | |
1389 | vstack_ax(stack)->type = REG_STRING; | |
1390 | next_pc += sizeof(struct load_op); | |
1391 | break; | |
1392 | } | |
1393 | ||
1394 | case FILTER_OP_LOAD_FIELD_DOUBLE: | |
1395 | { | |
1396 | /* Pop 1, push 1 */ | |
1397 | vstack_ax(stack)->type = REG_DOUBLE; | |
1398 | next_pc += sizeof(struct load_op); | |
1399 | break; | |
1400 | } | |
1401 | ||
1402 | case FILTER_OP_GET_SYMBOL: | |
1403 | { | |
1404 | struct load_op *insn = (struct load_op *) pc; | |
1405 | ||
1406 | dbg_printf("op get symbol\n"); | |
1407 | switch (vstack_ax(stack)->load.type) { | |
1408 | case LOAD_OBJECT: | |
1409 | ERR("Nested fields not implemented yet."); | |
1410 | ret = -EINVAL; | |
1411 | goto end; | |
1412 | case LOAD_ROOT_CONTEXT: | |
1413 | /* Lookup context field. */ | |
b77aaa1b | 1414 | ret = specialize_context_lookup(*pctx, |
47e5f13e MD |
1415 | bytecode, insn, |
1416 | &vstack_ax(stack)->load); | |
1417 | if (ret) | |
1418 | goto end; | |
1419 | break; | |
1420 | case LOAD_ROOT_APP_CONTEXT: | |
1421 | /* Lookup app context field. */ | |
b77aaa1b | 1422 | ret = specialize_app_context_lookup(pctx, |
47e5f13e MD |
1423 | bytecode, insn, |
1424 | &vstack_ax(stack)->load); | |
1425 | if (ret) | |
1426 | goto end; | |
1427 | break; | |
1428 | case LOAD_ROOT_PAYLOAD: | |
1429 | /* Lookup event payload field. */ | |
53b9d7db | 1430 | ret = specialize_payload_lookup(event_desc, |
47e5f13e MD |
1431 | bytecode, insn, |
1432 | &vstack_ax(stack)->load); | |
1433 | if (ret) | |
1434 | goto end; | |
1435 | break; | |
1436 | } | |
1437 | next_pc += sizeof(struct load_op) + sizeof(struct get_symbol); | |
1438 | break; | |
1439 | } | |
1440 | ||
1441 | case FILTER_OP_GET_SYMBOL_FIELD: | |
1442 | { | |
1443 | /* Always generated by specialize phase. */ | |
1444 | ret = -EINVAL; | |
1445 | goto end; | |
1446 | } | |
1447 | ||
1448 | case FILTER_OP_GET_INDEX_U16: | |
1449 | { | |
1450 | struct load_op *insn = (struct load_op *) pc; | |
1451 | struct get_index_u16 *index = (struct get_index_u16 *) insn->data; | |
1452 | ||
1453 | dbg_printf("op get index u16\n"); | |
1454 | /* Pop 1, push 1 */ | |
1455 | ret = specialize_get_index(bytecode, insn, index->index, | |
1456 | vstack_ax(stack), sizeof(*index)); | |
1457 | if (ret) | |
1458 | goto end; | |
1459 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16); | |
1460 | break; | |
1461 | } | |
1462 | ||
1463 | case FILTER_OP_GET_INDEX_U64: | |
1464 | { | |
1465 | struct load_op *insn = (struct load_op *) pc; | |
1466 | struct get_index_u64 *index = (struct get_index_u64 *) insn->data; | |
1467 | ||
1468 | dbg_printf("op get index u64\n"); | |
1469 | /* Pop 1, push 1 */ | |
1470 | ret = specialize_get_index(bytecode, insn, index->index, | |
1471 | vstack_ax(stack), sizeof(*index)); | |
1472 | if (ret) | |
1473 | goto end; | |
1474 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64); | |
1475 | break; | |
1476 | } | |
1477 | ||
97b58163 MD |
1478 | } |
1479 | } | |
1480 | end: | |
1481 | return ret; | |
1482 | } |