Commit | Line | Data |
---|---|---|
9f36eaed MJ |
1 | /* SPDX-License-Identifier: MIT |
2 | * | |
07dfc1d0 MD |
3 | * lttng-filter-specialize.c |
4 | * | |
5 | * LTTng modules filter code specializer. | |
6 | * | |
bbf3aef5 | 7 | * Copyright (C) 2010-2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
07dfc1d0 MD |
8 | */ |
9 | ||
3834b99f | 10 | #include <linux/slab.h> |
241ae9a8 | 11 | #include <lttng-filter.h> |
3834b99f | 12 | #include "lib/align.h" |
07dfc1d0 | 13 | |
3834b99f MD |
14 | static ssize_t bytecode_reserve_data(struct bytecode_runtime *runtime, |
15 | size_t align, size_t len) | |
16 | { | |
17 | ssize_t ret; | |
18 | size_t padding = offset_align(runtime->data_len, align); | |
19 | size_t new_len = runtime->data_len + padding + len; | |
20 | size_t new_alloc_len = new_len; | |
21 | size_t old_alloc_len = runtime->data_alloc_len; | |
22 | ||
23 | if (new_len > FILTER_MAX_DATA_LEN) | |
24 | return -EINVAL; | |
25 | ||
26 | if (new_alloc_len > old_alloc_len) { | |
27 | char *newptr; | |
28 | ||
29 | new_alloc_len = | |
30 | max_t(size_t, 1U << get_count_order(new_alloc_len), old_alloc_len << 1); | |
31 | newptr = krealloc(runtime->data, new_alloc_len, GFP_KERNEL); | |
32 | if (!newptr) | |
33 | return -ENOMEM; | |
34 | runtime->data = newptr; | |
35 | /* We zero directly the memory from start of allocation. */ | |
36 | memset(&runtime->data[old_alloc_len], 0, new_alloc_len - old_alloc_len); | |
37 | runtime->data_alloc_len = new_alloc_len; | |
38 | } | |
39 | runtime->data_len += padding; | |
40 | ret = runtime->data_len; | |
41 | runtime->data_len += len; | |
42 | return ret; | |
43 | } | |
44 | ||
45 | static ssize_t bytecode_push_data(struct bytecode_runtime *runtime, | |
46 | const void *p, size_t align, size_t len) | |
47 | { | |
48 | ssize_t offset; | |
49 | ||
50 | offset = bytecode_reserve_data(runtime, align, len); | |
51 | if (offset < 0) | |
52 | return -ENOMEM; | |
53 | memcpy(&runtime->data[offset], p, len); | |
54 | return offset; | |
55 | } | |
56 | ||
57 | static int specialize_load_field(struct vstack_entry *stack_top, | |
58 | struct load_op *insn) | |
59 | { | |
60 | int ret; | |
61 | ||
62 | switch (stack_top->load.type) { | |
63 | case LOAD_OBJECT: | |
64 | break; | |
65 | case LOAD_ROOT_CONTEXT: | |
66 | case LOAD_ROOT_APP_CONTEXT: | |
67 | case LOAD_ROOT_PAYLOAD: | |
68 | default: | |
69 | dbg_printk("Filter warning: cannot load root, missing field name.\n"); | |
70 | ret = -EINVAL; | |
71 | goto end; | |
72 | } | |
73 | switch (stack_top->load.object_type) { | |
74 | case OBJECT_TYPE_S8: | |
75 | dbg_printk("op load field s8\n"); | |
76 | stack_top->type = REG_S64; | |
77 | if (!stack_top->load.rev_bo) | |
78 | insn->op = FILTER_OP_LOAD_FIELD_S8; | |
79 | break; | |
80 | case OBJECT_TYPE_S16: | |
81 | dbg_printk("op load field s16\n"); | |
82 | stack_top->type = REG_S64; | |
83 | if (!stack_top->load.rev_bo) | |
84 | insn->op = FILTER_OP_LOAD_FIELD_S16; | |
85 | break; | |
86 | case OBJECT_TYPE_S32: | |
87 | dbg_printk("op load field s32\n"); | |
88 | stack_top->type = REG_S64; | |
89 | if (!stack_top->load.rev_bo) | |
90 | insn->op = FILTER_OP_LOAD_FIELD_S32; | |
91 | break; | |
92 | case OBJECT_TYPE_S64: | |
93 | dbg_printk("op load field s64\n"); | |
94 | stack_top->type = REG_S64; | |
95 | if (!stack_top->load.rev_bo) | |
96 | insn->op = FILTER_OP_LOAD_FIELD_S64; | |
97 | break; | |
98 | case OBJECT_TYPE_U8: | |
99 | dbg_printk("op load field u8\n"); | |
100 | stack_top->type = REG_S64; | |
101 | insn->op = FILTER_OP_LOAD_FIELD_U8; | |
102 | break; | |
103 | case OBJECT_TYPE_U16: | |
104 | dbg_printk("op load field u16\n"); | |
105 | stack_top->type = REG_S64; | |
106 | if (!stack_top->load.rev_bo) | |
107 | insn->op = FILTER_OP_LOAD_FIELD_U16; | |
108 | break; | |
109 | case OBJECT_TYPE_U32: | |
110 | dbg_printk("op load field u32\n"); | |
111 | stack_top->type = REG_S64; | |
112 | if (!stack_top->load.rev_bo) | |
113 | insn->op = FILTER_OP_LOAD_FIELD_U32; | |
114 | break; | |
115 | case OBJECT_TYPE_U64: | |
116 | dbg_printk("op load field u64\n"); | |
117 | stack_top->type = REG_S64; | |
118 | if (!stack_top->load.rev_bo) | |
119 | insn->op = FILTER_OP_LOAD_FIELD_U64; | |
120 | break; | |
121 | case OBJECT_TYPE_DOUBLE: | |
122 | printk(KERN_WARNING "Double type unsupported\n\n"); | |
123 | ret = -EINVAL; | |
124 | goto end; | |
125 | case OBJECT_TYPE_STRING: | |
126 | dbg_printk("op load field string\n"); | |
127 | stack_top->type = REG_STRING; | |
128 | insn->op = FILTER_OP_LOAD_FIELD_STRING; | |
129 | break; | |
130 | case OBJECT_TYPE_STRING_SEQUENCE: | |
131 | dbg_printk("op load field string sequence\n"); | |
132 | stack_top->type = REG_STRING; | |
133 | insn->op = FILTER_OP_LOAD_FIELD_SEQUENCE; | |
134 | break; | |
135 | case OBJECT_TYPE_DYNAMIC: | |
136 | ret = -EINVAL; | |
137 | goto end; | |
138 | case OBJECT_TYPE_SEQUENCE: | |
139 | case OBJECT_TYPE_ARRAY: | |
140 | case OBJECT_TYPE_STRUCT: | |
141 | case OBJECT_TYPE_VARIANT: | |
142 | printk(KERN_WARNING "Sequences, arrays, struct and variant cannot be loaded (nested types).\n"); | |
143 | ret = -EINVAL; | |
144 | goto end; | |
145 | } | |
146 | return 0; | |
147 | ||
148 | end: | |
149 | return ret; | |
150 | } | |
151 | ||
152 | static int specialize_get_index_object_type(enum object_type *otype, | |
153 | int signedness, uint32_t elem_len) | |
154 | { | |
155 | switch (elem_len) { | |
156 | case 8: | |
157 | if (signedness) | |
158 | *otype = OBJECT_TYPE_S8; | |
159 | else | |
160 | *otype = OBJECT_TYPE_U8; | |
161 | break; | |
162 | case 16: | |
163 | if (signedness) | |
164 | *otype = OBJECT_TYPE_S16; | |
165 | else | |
166 | *otype = OBJECT_TYPE_U16; | |
167 | break; | |
168 | case 32: | |
169 | if (signedness) | |
170 | *otype = OBJECT_TYPE_S32; | |
171 | else | |
172 | *otype = OBJECT_TYPE_U32; | |
173 | break; | |
174 | case 64: | |
175 | if (signedness) | |
176 | *otype = OBJECT_TYPE_S64; | |
177 | else | |
178 | *otype = OBJECT_TYPE_U64; | |
179 | break; | |
180 | default: | |
181 | return -EINVAL; | |
182 | } | |
183 | return 0; | |
184 | } | |
185 | ||
186 | static int specialize_get_index(struct bytecode_runtime *runtime, | |
187 | struct load_op *insn, uint64_t index, | |
188 | struct vstack_entry *stack_top, | |
189 | int idx_len) | |
190 | { | |
191 | int ret; | |
192 | struct filter_get_index_data gid; | |
193 | ssize_t data_offset; | |
194 | ||
195 | memset(&gid, 0, sizeof(gid)); | |
196 | switch (stack_top->load.type) { | |
197 | case LOAD_OBJECT: | |
198 | switch (stack_top->load.object_type) { | |
199 | case OBJECT_TYPE_ARRAY: | |
200 | { | |
201 | const struct lttng_event_field *field; | |
202 | uint32_t elem_len, num_elems; | |
203 | int signedness; | |
204 | ||
205 | field = stack_top->load.field; | |
206 | elem_len = field->type.u.array.elem_type.u.basic.integer.size; | |
207 | signedness = field->type.u.array.elem_type.u.basic.integer.signedness; | |
208 | num_elems = field->type.u.array.length; | |
209 | if (index >= num_elems) { | |
210 | ret = -EINVAL; | |
211 | goto end; | |
212 | } | |
213 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
214 | signedness, elem_len); | |
215 | if (ret) | |
216 | goto end; | |
217 | gid.offset = index * (elem_len / CHAR_BIT); | |
218 | gid.array_len = num_elems * (elem_len / CHAR_BIT); | |
219 | gid.elem.type = stack_top->load.object_type; | |
220 | gid.elem.len = elem_len; | |
221 | if (field->type.u.array.elem_type.u.basic.integer.reverse_byte_order) | |
222 | gid.elem.rev_bo = true; | |
223 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
224 | break; | |
225 | } | |
226 | case OBJECT_TYPE_SEQUENCE: | |
227 | { | |
228 | const struct lttng_event_field *field; | |
229 | uint32_t elem_len; | |
230 | int signedness; | |
231 | ||
232 | field = stack_top->load.field; | |
233 | elem_len = field->type.u.sequence.elem_type.u.basic.integer.size; | |
234 | signedness = field->type.u.sequence.elem_type.u.basic.integer.signedness; | |
235 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
236 | signedness, elem_len); | |
237 | if (ret) | |
238 | goto end; | |
239 | gid.offset = index * (elem_len / CHAR_BIT); | |
240 | gid.elem.type = stack_top->load.object_type; | |
241 | gid.elem.len = elem_len; | |
242 | if (field->type.u.sequence.elem_type.u.basic.integer.reverse_byte_order) | |
243 | gid.elem.rev_bo = true; | |
244 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
245 | break; | |
246 | } | |
247 | case OBJECT_TYPE_STRUCT: | |
248 | /* Only generated by the specialize phase. */ | |
249 | case OBJECT_TYPE_VARIANT: /* Fall-through */ | |
250 | default: | |
251 | printk(KERN_WARNING "Unexpected get index type %d", | |
252 | (int) stack_top->load.object_type); | |
253 | ret = -EINVAL; | |
254 | goto end; | |
255 | } | |
256 | break; | |
257 | case LOAD_ROOT_CONTEXT: | |
258 | case LOAD_ROOT_APP_CONTEXT: | |
259 | case LOAD_ROOT_PAYLOAD: | |
260 | printk(KERN_WARNING "Index lookup for root field not implemented yet.\n"); | |
261 | ret = -EINVAL; | |
262 | goto end; | |
263 | } | |
264 | data_offset = bytecode_push_data(runtime, &gid, | |
265 | __alignof__(gid), sizeof(gid)); | |
266 | if (data_offset < 0) { | |
267 | ret = -EINVAL; | |
268 | goto end; | |
269 | } | |
270 | switch (idx_len) { | |
271 | case 2: | |
272 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
273 | break; | |
274 | case 8: | |
275 | ((struct get_index_u64 *) insn->data)->index = data_offset; | |
276 | break; | |
277 | default: | |
278 | ret = -EINVAL; | |
279 | goto end; | |
280 | } | |
281 | ||
282 | return 0; | |
283 | ||
284 | end: | |
285 | return ret; | |
286 | } | |
287 | ||
288 | static int specialize_context_lookup_name(struct bytecode_runtime *bytecode, | |
289 | struct load_op *insn) | |
290 | { | |
291 | uint16_t offset; | |
292 | const char *name; | |
293 | ||
294 | offset = ((struct get_symbol *) insn->data)->offset; | |
295 | name = bytecode->p.bc->bc.data + bytecode->p.bc->bc.reloc_offset + offset; | |
296 | return lttng_get_context_index(lttng_static_ctx, name); | |
297 | } | |
298 | ||
299 | static int specialize_load_object(const struct lttng_event_field *field, | |
300 | struct vstack_load *load, bool is_context) | |
301 | { | |
302 | load->type = LOAD_OBJECT; | |
303 | /* | |
304 | * LTTng-UST layout all integer fields as s64 on the stack for the filter. | |
305 | */ | |
306 | switch (field->type.atype) { | |
307 | case atype_integer: | |
308 | if (field->type.u.basic.integer.signedness) | |
309 | load->object_type = OBJECT_TYPE_S64; | |
310 | else | |
311 | load->object_type = OBJECT_TYPE_U64; | |
312 | load->rev_bo = false; | |
313 | break; | |
314 | case atype_enum: | |
315 | { | |
316 | const struct lttng_integer_type *itype = | |
317 | &field->type.u.basic.enumeration.container_type; | |
318 | ||
319 | if (itype->signedness) | |
320 | load->object_type = OBJECT_TYPE_S64; | |
321 | else | |
322 | load->object_type = OBJECT_TYPE_U64; | |
323 | load->rev_bo = false; | |
324 | break; | |
325 | } | |
326 | case atype_array: | |
327 | if (field->type.u.array.elem_type.atype != atype_integer) { | |
328 | printk(KERN_WARNING "Array nesting only supports integer types.\n"); | |
329 | return -EINVAL; | |
330 | } | |
331 | if (is_context) { | |
332 | load->object_type = OBJECT_TYPE_STRING; | |
333 | } else { | |
334 | if (field->type.u.array.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
335 | load->object_type = OBJECT_TYPE_ARRAY; | |
336 | load->field = field; | |
337 | } else { | |
338 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
339 | } | |
340 | } | |
341 | break; | |
342 | case atype_sequence: | |
343 | if (field->type.u.sequence.elem_type.atype != atype_integer) { | |
344 | printk(KERN_WARNING "Sequence nesting only supports integer types.\n"); | |
345 | return -EINVAL; | |
346 | } | |
347 | if (is_context) { | |
348 | load->object_type = OBJECT_TYPE_STRING; | |
349 | } else { | |
350 | if (field->type.u.sequence.elem_type.u.basic.integer.encoding == lttng_encode_none) { | |
351 | load->object_type = OBJECT_TYPE_SEQUENCE; | |
352 | load->field = field; | |
353 | } else { | |
354 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
355 | } | |
356 | } | |
357 | break; | |
358 | case atype_array_bitfield: | |
359 | printk(KERN_WARNING "Bitfield array type is not supported.\n"); | |
360 | return -EINVAL; | |
361 | case atype_sequence_bitfield: | |
362 | printk(KERN_WARNING "Bitfield sequence type is not supported.\n"); | |
363 | return -EINVAL; | |
364 | case atype_string: | |
365 | load->object_type = OBJECT_TYPE_STRING; | |
366 | break; | |
367 | case atype_struct: | |
368 | printk(KERN_WARNING "Structure type cannot be loaded.\n"); | |
369 | return -EINVAL; | |
370 | default: | |
371 | printk(KERN_WARNING "Unknown type: %d", (int) field->type.atype); | |
372 | return -EINVAL; | |
373 | } | |
374 | return 0; | |
375 | } | |
376 | ||
377 | static int specialize_context_lookup(struct bytecode_runtime *runtime, | |
378 | struct load_op *insn, | |
379 | struct vstack_load *load) | |
380 | { | |
381 | int idx, ret; | |
382 | struct lttng_ctx_field *ctx_field; | |
383 | struct lttng_event_field *field; | |
384 | struct filter_get_index_data gid; | |
385 | ssize_t data_offset; | |
386 | ||
387 | idx = specialize_context_lookup_name(runtime, insn); | |
388 | if (idx < 0) { | |
389 | return -ENOENT; | |
390 | } | |
391 | ctx_field = <tng_static_ctx->fields[idx]; | |
392 | field = &ctx_field->event_field; | |
393 | ret = specialize_load_object(field, load, true); | |
394 | if (ret) | |
395 | return ret; | |
396 | /* Specialize each get_symbol into a get_index. */ | |
397 | insn->op = FILTER_OP_GET_INDEX_U16; | |
398 | memset(&gid, 0, sizeof(gid)); | |
399 | gid.ctx_index = idx; | |
400 | gid.elem.type = load->object_type; | |
401 | data_offset = bytecode_push_data(runtime, &gid, | |
402 | __alignof__(gid), sizeof(gid)); | |
403 | if (data_offset < 0) { | |
404 | return -EINVAL; | |
405 | } | |
406 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
407 | return 0; | |
408 | } | |
409 | ||
410 | static int specialize_event_payload_lookup(struct lttng_event *event, | |
411 | struct bytecode_runtime *runtime, | |
412 | struct load_op *insn, | |
413 | struct vstack_load *load) | |
414 | { | |
415 | const char *name; | |
416 | uint16_t offset; | |
417 | const struct lttng_event_desc *desc = event->desc; | |
418 | unsigned int i, nr_fields; | |
419 | bool found = false; | |
420 | uint32_t field_offset = 0; | |
421 | const struct lttng_event_field *field; | |
422 | int ret; | |
423 | struct filter_get_index_data gid; | |
424 | ssize_t data_offset; | |
425 | ||
426 | nr_fields = desc->nr_fields; | |
427 | offset = ((struct get_symbol *) insn->data)->offset; | |
428 | name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
429 | for (i = 0; i < nr_fields; i++) { | |
430 | field = &desc->fields[i]; | |
431 | if (!strcmp(field->name, name)) { | |
432 | found = true; | |
433 | break; | |
434 | } | |
435 | /* compute field offset on stack */ | |
436 | switch (field->type.atype) { | |
437 | case atype_integer: | |
438 | case atype_enum: | |
439 | field_offset += sizeof(int64_t); | |
440 | break; | |
441 | case atype_array: | |
442 | case atype_sequence: | |
443 | case atype_array_bitfield: | |
444 | case atype_sequence_bitfield: | |
445 | field_offset += sizeof(unsigned long); | |
446 | field_offset += sizeof(void *); | |
447 | break; | |
448 | case atype_string: | |
449 | field_offset += sizeof(void *); | |
450 | break; | |
451 | default: | |
452 | ret = -EINVAL; | |
453 | goto end; | |
454 | } | |
455 | } | |
456 | if (!found) { | |
457 | ret = -EINVAL; | |
458 | goto end; | |
459 | } | |
460 | ||
461 | ret = specialize_load_object(field, load, false); | |
462 | if (ret) | |
463 | goto end; | |
464 | ||
465 | /* Specialize each get_symbol into a get_index. */ | |
466 | insn->op = FILTER_OP_GET_INDEX_U16; | |
467 | memset(&gid, 0, sizeof(gid)); | |
468 | gid.offset = field_offset; | |
469 | gid.elem.type = load->object_type; | |
470 | data_offset = bytecode_push_data(runtime, &gid, | |
471 | __alignof__(gid), sizeof(gid)); | |
472 | if (data_offset < 0) { | |
473 | ret = -EINVAL; | |
474 | goto end; | |
475 | } | |
476 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
477 | ret = 0; | |
478 | end: | |
479 | return ret; | |
480 | } | |
481 | ||
482 | int lttng_filter_specialize_bytecode(struct lttng_event *event, | |
483 | struct bytecode_runtime *bytecode) | |
07dfc1d0 MD |
484 | { |
485 | void *pc, *next_pc, *start_pc; | |
486 | int ret = -EINVAL; | |
487 | struct vstack _stack; | |
488 | struct vstack *stack = &_stack; | |
489 | ||
490 | vstack_init(stack); | |
491 | ||
3834b99f | 492 | start_pc = &bytecode->code[0]; |
07dfc1d0 MD |
493 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; |
494 | pc = next_pc) { | |
495 | switch (*(filter_opcode_t *) pc) { | |
496 | case FILTER_OP_UNKNOWN: | |
497 | default: | |
498 | printk(KERN_WARNING "unknown bytecode op %u\n", | |
499 | (unsigned int) *(filter_opcode_t *) pc); | |
500 | ret = -EINVAL; | |
501 | goto end; | |
502 | ||
503 | case FILTER_OP_RETURN: | |
57ba4b41 | 504 | case FILTER_OP_RETURN_S64: |
07dfc1d0 MD |
505 | ret = 0; |
506 | goto end; | |
507 | ||
508 | /* binary */ | |
509 | case FILTER_OP_MUL: | |
510 | case FILTER_OP_DIV: | |
511 | case FILTER_OP_MOD: | |
512 | case FILTER_OP_PLUS: | |
513 | case FILTER_OP_MINUS: | |
07dfc1d0 MD |
514 | printk(KERN_WARNING "unsupported bytecode op %u\n", |
515 | (unsigned int) *(filter_opcode_t *) pc); | |
516 | ret = -EINVAL; | |
517 | goto end; | |
518 | ||
519 | case FILTER_OP_EQ: | |
520 | { | |
521 | struct binary_op *insn = (struct binary_op *) pc; | |
522 | ||
523 | switch(vstack_ax(stack)->type) { | |
524 | default: | |
525 | printk(KERN_WARNING "unknown register type\n"); | |
526 | ret = -EINVAL; | |
527 | goto end; | |
528 | ||
529 | case REG_STRING: | |
02aca193 PP |
530 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
531 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
532 | else | |
533 | insn->op = FILTER_OP_EQ_STRING; | |
534 | break; | |
535 | case REG_STAR_GLOB_STRING: | |
536 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
07dfc1d0 MD |
537 | break; |
538 | case REG_S64: | |
539 | if (vstack_bx(stack)->type == REG_S64) | |
540 | insn->op = FILTER_OP_EQ_S64; | |
541 | else | |
542 | insn->op = FILTER_OP_EQ_DOUBLE_S64; | |
543 | break; | |
544 | case REG_DOUBLE: | |
545 | if (vstack_bx(stack)->type == REG_S64) | |
546 | insn->op = FILTER_OP_EQ_S64_DOUBLE; | |
547 | else | |
548 | insn->op = FILTER_OP_EQ_DOUBLE; | |
549 | break; | |
550 | } | |
551 | /* Pop 2, push 1 */ | |
552 | if (vstack_pop(stack)) { | |
553 | ret = -EINVAL; | |
554 | goto end; | |
555 | } | |
556 | vstack_ax(stack)->type = REG_S64; | |
557 | next_pc += sizeof(struct binary_op); | |
558 | break; | |
559 | } | |
560 | ||
561 | case FILTER_OP_NE: | |
562 | { | |
563 | struct binary_op *insn = (struct binary_op *) pc; | |
564 | ||
565 | switch(vstack_ax(stack)->type) { | |
566 | default: | |
567 | printk(KERN_WARNING "unknown register type\n"); | |
568 | ret = -EINVAL; | |
569 | goto end; | |
570 | ||
571 | case REG_STRING: | |
02aca193 PP |
572 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
573 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
574 | else | |
575 | insn->op = FILTER_OP_NE_STRING; | |
576 | break; | |
577 | case REG_STAR_GLOB_STRING: | |
578 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
07dfc1d0 MD |
579 | break; |
580 | case REG_S64: | |
581 | if (vstack_bx(stack)->type == REG_S64) | |
582 | insn->op = FILTER_OP_NE_S64; | |
583 | else | |
584 | insn->op = FILTER_OP_NE_DOUBLE_S64; | |
585 | break; | |
586 | case REG_DOUBLE: | |
587 | if (vstack_bx(stack)->type == REG_S64) | |
588 | insn->op = FILTER_OP_NE_S64_DOUBLE; | |
589 | else | |
590 | insn->op = FILTER_OP_NE_DOUBLE; | |
591 | break; | |
592 | } | |
593 | /* Pop 2, push 1 */ | |
594 | if (vstack_pop(stack)) { | |
595 | ret = -EINVAL; | |
596 | goto end; | |
597 | } | |
598 | vstack_ax(stack)->type = REG_S64; | |
599 | next_pc += sizeof(struct binary_op); | |
600 | break; | |
601 | } | |
602 | ||
603 | case FILTER_OP_GT: | |
604 | { | |
605 | struct binary_op *insn = (struct binary_op *) pc; | |
606 | ||
607 | switch(vstack_ax(stack)->type) { | |
608 | default: | |
609 | printk(KERN_WARNING "unknown register type\n"); | |
610 | ret = -EINVAL; | |
611 | goto end; | |
612 | ||
02aca193 PP |
613 | case REG_STAR_GLOB_STRING: |
614 | printk(KERN_WARNING "invalid register type for > binary operator\n"); | |
615 | ret = -EINVAL; | |
616 | goto end; | |
07dfc1d0 MD |
617 | case REG_STRING: |
618 | insn->op = FILTER_OP_GT_STRING; | |
619 | break; | |
620 | case REG_S64: | |
621 | if (vstack_bx(stack)->type == REG_S64) | |
622 | insn->op = FILTER_OP_GT_S64; | |
623 | else | |
624 | insn->op = FILTER_OP_GT_DOUBLE_S64; | |
625 | break; | |
626 | case REG_DOUBLE: | |
627 | if (vstack_bx(stack)->type == REG_S64) | |
628 | insn->op = FILTER_OP_GT_S64_DOUBLE; | |
629 | else | |
630 | insn->op = FILTER_OP_GT_DOUBLE; | |
631 | break; | |
632 | } | |
633 | /* Pop 2, push 1 */ | |
634 | if (vstack_pop(stack)) { | |
635 | ret = -EINVAL; | |
636 | goto end; | |
637 | } | |
638 | vstack_ax(stack)->type = REG_S64; | |
639 | next_pc += sizeof(struct binary_op); | |
640 | break; | |
641 | } | |
642 | ||
643 | case FILTER_OP_LT: | |
644 | { | |
645 | struct binary_op *insn = (struct binary_op *) pc; | |
646 | ||
647 | switch(vstack_ax(stack)->type) { | |
648 | default: | |
649 | printk(KERN_WARNING "unknown register type\n"); | |
650 | ret = -EINVAL; | |
651 | goto end; | |
652 | ||
02aca193 PP |
653 | case REG_STAR_GLOB_STRING: |
654 | printk(KERN_WARNING "invalid register type for < binary operator\n"); | |
655 | ret = -EINVAL; | |
656 | goto end; | |
07dfc1d0 MD |
657 | case REG_STRING: |
658 | insn->op = FILTER_OP_LT_STRING; | |
659 | break; | |
660 | case REG_S64: | |
661 | if (vstack_bx(stack)->type == REG_S64) | |
662 | insn->op = FILTER_OP_LT_S64; | |
663 | else | |
664 | insn->op = FILTER_OP_LT_DOUBLE_S64; | |
665 | break; | |
666 | case REG_DOUBLE: | |
667 | if (vstack_bx(stack)->type == REG_S64) | |
668 | insn->op = FILTER_OP_LT_S64_DOUBLE; | |
669 | else | |
670 | insn->op = FILTER_OP_LT_DOUBLE; | |
671 | break; | |
672 | } | |
673 | /* Pop 2, push 1 */ | |
674 | if (vstack_pop(stack)) { | |
675 | ret = -EINVAL; | |
676 | goto end; | |
677 | } | |
678 | vstack_ax(stack)->type = REG_S64; | |
679 | next_pc += sizeof(struct binary_op); | |
680 | break; | |
681 | } | |
682 | ||
683 | case FILTER_OP_GE: | |
684 | { | |
685 | struct binary_op *insn = (struct binary_op *) pc; | |
686 | ||
687 | switch(vstack_ax(stack)->type) { | |
688 | default: | |
689 | printk(KERN_WARNING "unknown register type\n"); | |
690 | ret = -EINVAL; | |
691 | goto end; | |
692 | ||
02aca193 PP |
693 | case REG_STAR_GLOB_STRING: |
694 | printk(KERN_WARNING "invalid register type for >= binary operator\n"); | |
695 | ret = -EINVAL; | |
696 | goto end; | |
07dfc1d0 MD |
697 | case REG_STRING: |
698 | insn->op = FILTER_OP_GE_STRING; | |
699 | break; | |
700 | case REG_S64: | |
701 | if (vstack_bx(stack)->type == REG_S64) | |
702 | insn->op = FILTER_OP_GE_S64; | |
703 | else | |
704 | insn->op = FILTER_OP_GE_DOUBLE_S64; | |
705 | break; | |
706 | case REG_DOUBLE: | |
707 | if (vstack_bx(stack)->type == REG_S64) | |
708 | insn->op = FILTER_OP_GE_S64_DOUBLE; | |
709 | else | |
710 | insn->op = FILTER_OP_GE_DOUBLE; | |
711 | break; | |
712 | } | |
713 | /* Pop 2, push 1 */ | |
714 | if (vstack_pop(stack)) { | |
715 | ret = -EINVAL; | |
716 | goto end; | |
717 | } | |
718 | vstack_ax(stack)->type = REG_S64; | |
719 | next_pc += sizeof(struct binary_op); | |
720 | break; | |
721 | } | |
722 | case FILTER_OP_LE: | |
723 | { | |
724 | struct binary_op *insn = (struct binary_op *) pc; | |
725 | ||
726 | switch(vstack_ax(stack)->type) { | |
727 | default: | |
728 | printk(KERN_WARNING "unknown register type\n"); | |
729 | ret = -EINVAL; | |
730 | goto end; | |
731 | ||
02aca193 PP |
732 | case REG_STAR_GLOB_STRING: |
733 | printk(KERN_WARNING "invalid register type for <= binary operator\n"); | |
734 | ret = -EINVAL; | |
735 | goto end; | |
07dfc1d0 MD |
736 | case REG_STRING: |
737 | insn->op = FILTER_OP_LE_STRING; | |
738 | break; | |
739 | case REG_S64: | |
740 | if (vstack_bx(stack)->type == REG_S64) | |
741 | insn->op = FILTER_OP_LE_S64; | |
742 | else | |
743 | insn->op = FILTER_OP_LE_DOUBLE_S64; | |
744 | break; | |
745 | case REG_DOUBLE: | |
746 | if (vstack_bx(stack)->type == REG_S64) | |
747 | insn->op = FILTER_OP_LE_S64_DOUBLE; | |
748 | else | |
749 | insn->op = FILTER_OP_LE_DOUBLE; | |
750 | break; | |
751 | } | |
752 | vstack_ax(stack)->type = REG_S64; | |
753 | next_pc += sizeof(struct binary_op); | |
754 | break; | |
755 | } | |
756 | ||
757 | case FILTER_OP_EQ_STRING: | |
758 | case FILTER_OP_NE_STRING: | |
759 | case FILTER_OP_GT_STRING: | |
760 | case FILTER_OP_LT_STRING: | |
761 | case FILTER_OP_GE_STRING: | |
762 | case FILTER_OP_LE_STRING: | |
02aca193 PP |
763 | case FILTER_OP_EQ_STAR_GLOB_STRING: |
764 | case FILTER_OP_NE_STAR_GLOB_STRING: | |
07dfc1d0 MD |
765 | case FILTER_OP_EQ_S64: |
766 | case FILTER_OP_NE_S64: | |
767 | case FILTER_OP_GT_S64: | |
768 | case FILTER_OP_LT_S64: | |
769 | case FILTER_OP_GE_S64: | |
770 | case FILTER_OP_LE_S64: | |
771 | case FILTER_OP_EQ_DOUBLE: | |
772 | case FILTER_OP_NE_DOUBLE: | |
773 | case FILTER_OP_GT_DOUBLE: | |
774 | case FILTER_OP_LT_DOUBLE: | |
775 | case FILTER_OP_GE_DOUBLE: | |
776 | case FILTER_OP_LE_DOUBLE: | |
777 | case FILTER_OP_EQ_DOUBLE_S64: | |
778 | case FILTER_OP_NE_DOUBLE_S64: | |
779 | case FILTER_OP_GT_DOUBLE_S64: | |
780 | case FILTER_OP_LT_DOUBLE_S64: | |
781 | case FILTER_OP_GE_DOUBLE_S64: | |
782 | case FILTER_OP_LE_DOUBLE_S64: | |
783 | case FILTER_OP_EQ_S64_DOUBLE: | |
784 | case FILTER_OP_NE_S64_DOUBLE: | |
785 | case FILTER_OP_GT_S64_DOUBLE: | |
786 | case FILTER_OP_LT_S64_DOUBLE: | |
787 | case FILTER_OP_GE_S64_DOUBLE: | |
788 | case FILTER_OP_LE_S64_DOUBLE: | |
e16c054b MD |
789 | case FILTER_OP_BIT_RSHIFT: |
790 | case FILTER_OP_BIT_LSHIFT: | |
3834b99f MD |
791 | case FILTER_OP_BIT_AND: |
792 | case FILTER_OP_BIT_OR: | |
793 | case FILTER_OP_BIT_XOR: | |
07dfc1d0 MD |
794 | { |
795 | /* Pop 2, push 1 */ | |
796 | if (vstack_pop(stack)) { | |
797 | ret = -EINVAL; | |
798 | goto end; | |
799 | } | |
800 | vstack_ax(stack)->type = REG_S64; | |
801 | next_pc += sizeof(struct binary_op); | |
802 | break; | |
803 | } | |
804 | ||
805 | /* unary */ | |
806 | case FILTER_OP_UNARY_PLUS: | |
807 | { | |
808 | struct unary_op *insn = (struct unary_op *) pc; | |
809 | ||
810 | switch(vstack_ax(stack)->type) { | |
811 | default: | |
812 | printk(KERN_WARNING "unknown register type\n"); | |
813 | ret = -EINVAL; | |
814 | goto end; | |
815 | ||
816 | case REG_S64: | |
817 | insn->op = FILTER_OP_UNARY_PLUS_S64; | |
818 | break; | |
819 | case REG_DOUBLE: | |
820 | insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; | |
821 | break; | |
822 | } | |
823 | /* Pop 1, push 1 */ | |
824 | next_pc += sizeof(struct unary_op); | |
825 | break; | |
826 | } | |
827 | ||
828 | case FILTER_OP_UNARY_MINUS: | |
829 | { | |
830 | struct unary_op *insn = (struct unary_op *) pc; | |
831 | ||
832 | switch(vstack_ax(stack)->type) { | |
833 | default: | |
834 | printk(KERN_WARNING "unknown register type\n"); | |
835 | ret = -EINVAL; | |
836 | goto end; | |
837 | ||
838 | case REG_S64: | |
839 | insn->op = FILTER_OP_UNARY_MINUS_S64; | |
840 | break; | |
841 | case REG_DOUBLE: | |
842 | insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; | |
843 | break; | |
844 | } | |
845 | /* Pop 1, push 1 */ | |
846 | next_pc += sizeof(struct unary_op); | |
847 | break; | |
848 | } | |
849 | ||
850 | case FILTER_OP_UNARY_NOT: | |
851 | { | |
852 | struct unary_op *insn = (struct unary_op *) pc; | |
853 | ||
854 | switch(vstack_ax(stack)->type) { | |
855 | default: | |
856 | printk(KERN_WARNING "unknown register type\n"); | |
857 | ret = -EINVAL; | |
858 | goto end; | |
859 | ||
860 | case REG_S64: | |
861 | insn->op = FILTER_OP_UNARY_NOT_S64; | |
862 | break; | |
863 | case REG_DOUBLE: | |
864 | insn->op = FILTER_OP_UNARY_NOT_DOUBLE; | |
865 | break; | |
866 | } | |
867 | /* Pop 1, push 1 */ | |
868 | next_pc += sizeof(struct unary_op); | |
869 | break; | |
870 | } | |
871 | ||
e16c054b MD |
872 | case FILTER_OP_UNARY_BIT_NOT: |
873 | { | |
874 | /* Pop 1, push 1 */ | |
875 | next_pc += sizeof(struct unary_op); | |
876 | break; | |
877 | } | |
878 | ||
07dfc1d0 MD |
879 | case FILTER_OP_UNARY_PLUS_S64: |
880 | case FILTER_OP_UNARY_MINUS_S64: | |
881 | case FILTER_OP_UNARY_NOT_S64: | |
882 | case FILTER_OP_UNARY_PLUS_DOUBLE: | |
883 | case FILTER_OP_UNARY_MINUS_DOUBLE: | |
884 | case FILTER_OP_UNARY_NOT_DOUBLE: | |
885 | { | |
886 | /* Pop 1, push 1 */ | |
887 | next_pc += sizeof(struct unary_op); | |
888 | break; | |
889 | } | |
890 | ||
891 | /* logical */ | |
892 | case FILTER_OP_AND: | |
893 | case FILTER_OP_OR: | |
894 | { | |
895 | /* Continue to next instruction */ | |
896 | /* Pop 1 when jump not taken */ | |
897 | if (vstack_pop(stack)) { | |
898 | ret = -EINVAL; | |
899 | goto end; | |
900 | } | |
901 | next_pc += sizeof(struct logical_op); | |
902 | break; | |
903 | } | |
904 | ||
905 | /* load field ref */ | |
906 | case FILTER_OP_LOAD_FIELD_REF: | |
907 | { | |
908 | printk(KERN_WARNING "Unknown field ref type\n"); | |
909 | ret = -EINVAL; | |
910 | goto end; | |
911 | } | |
912 | /* get context ref */ | |
913 | case FILTER_OP_GET_CONTEXT_REF: | |
914 | { | |
915 | printk(KERN_WARNING "Unknown get context ref type\n"); | |
916 | ret = -EINVAL; | |
917 | goto end; | |
918 | } | |
919 | case FILTER_OP_LOAD_FIELD_REF_STRING: | |
920 | case FILTER_OP_LOAD_FIELD_REF_SEQUENCE: | |
921 | case FILTER_OP_GET_CONTEXT_REF_STRING: | |
f127e61e MD |
922 | case FILTER_OP_LOAD_FIELD_REF_USER_STRING: |
923 | case FILTER_OP_LOAD_FIELD_REF_USER_SEQUENCE: | |
07dfc1d0 MD |
924 | { |
925 | if (vstack_push(stack)) { | |
926 | ret = -EINVAL; | |
927 | goto end; | |
928 | } | |
929 | vstack_ax(stack)->type = REG_STRING; | |
930 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
931 | break; | |
932 | } | |
933 | case FILTER_OP_LOAD_FIELD_REF_S64: | |
934 | case FILTER_OP_GET_CONTEXT_REF_S64: | |
935 | { | |
936 | if (vstack_push(stack)) { | |
937 | ret = -EINVAL; | |
938 | goto end; | |
939 | } | |
940 | vstack_ax(stack)->type = REG_S64; | |
941 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
942 | break; | |
943 | } | |
944 | case FILTER_OP_LOAD_FIELD_REF_DOUBLE: | |
945 | case FILTER_OP_GET_CONTEXT_REF_DOUBLE: | |
946 | { | |
947 | if (vstack_push(stack)) { | |
948 | ret = -EINVAL; | |
949 | goto end; | |
950 | } | |
951 | vstack_ax(stack)->type = REG_DOUBLE; | |
952 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
953 | break; | |
954 | } | |
955 | ||
956 | /* load from immediate operand */ | |
957 | case FILTER_OP_LOAD_STRING: | |
958 | { | |
959 | struct load_op *insn = (struct load_op *) pc; | |
960 | ||
961 | if (vstack_push(stack)) { | |
962 | ret = -EINVAL; | |
963 | goto end; | |
964 | } | |
965 | vstack_ax(stack)->type = REG_STRING; | |
966 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
967 | break; | |
968 | } | |
969 | ||
02aca193 PP |
970 | case FILTER_OP_LOAD_STAR_GLOB_STRING: |
971 | { | |
972 | struct load_op *insn = (struct load_op *) pc; | |
973 | ||
974 | if (vstack_push(stack)) { | |
975 | ret = -EINVAL; | |
976 | goto end; | |
977 | } | |
978 | vstack_ax(stack)->type = REG_STAR_GLOB_STRING; | |
979 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
980 | break; | |
981 | } | |
982 | ||
07dfc1d0 MD |
983 | case FILTER_OP_LOAD_S64: |
984 | { | |
985 | if (vstack_push(stack)) { | |
986 | ret = -EINVAL; | |
987 | goto end; | |
988 | } | |
989 | vstack_ax(stack)->type = REG_S64; | |
990 | next_pc += sizeof(struct load_op) | |
991 | + sizeof(struct literal_numeric); | |
992 | break; | |
993 | } | |
994 | ||
995 | case FILTER_OP_LOAD_DOUBLE: | |
996 | { | |
997 | if (vstack_push(stack)) { | |
998 | ret = -EINVAL; | |
999 | goto end; | |
1000 | } | |
1001 | vstack_ax(stack)->type = REG_DOUBLE; | |
1002 | next_pc += sizeof(struct load_op) | |
1003 | + sizeof(struct literal_double); | |
1004 | break; | |
1005 | } | |
1006 | ||
1007 | /* cast */ | |
1008 | case FILTER_OP_CAST_TO_S64: | |
1009 | { | |
1010 | struct cast_op *insn = (struct cast_op *) pc; | |
1011 | ||
1012 | switch (vstack_ax(stack)->type) { | |
1013 | default: | |
1014 | printk(KERN_WARNING "unknown register type\n"); | |
1015 | ret = -EINVAL; | |
1016 | goto end; | |
1017 | ||
1018 | case REG_STRING: | |
02aca193 | 1019 | case REG_STAR_GLOB_STRING: |
07dfc1d0 MD |
1020 | printk(KERN_WARNING "Cast op can only be applied to numeric or floating point registers\n"); |
1021 | ret = -EINVAL; | |
1022 | goto end; | |
1023 | case REG_S64: | |
1024 | insn->op = FILTER_OP_CAST_NOP; | |
1025 | break; | |
1026 | case REG_DOUBLE: | |
1027 | insn->op = FILTER_OP_CAST_DOUBLE_TO_S64; | |
1028 | break; | |
1029 | } | |
1030 | /* Pop 1, push 1 */ | |
1031 | vstack_ax(stack)->type = REG_S64; | |
1032 | next_pc += sizeof(struct cast_op); | |
1033 | break; | |
1034 | } | |
1035 | case FILTER_OP_CAST_DOUBLE_TO_S64: | |
1036 | { | |
1037 | /* Pop 1, push 1 */ | |
1038 | vstack_ax(stack)->type = REG_S64; | |
1039 | next_pc += sizeof(struct cast_op); | |
1040 | break; | |
1041 | } | |
1042 | case FILTER_OP_CAST_NOP: | |
1043 | { | |
1044 | next_pc += sizeof(struct cast_op); | |
1045 | break; | |
1046 | } | |
1047 | ||
3834b99f MD |
1048 | /* |
1049 | * Instructions for recursive traversal through composed types. | |
1050 | */ | |
1051 | case FILTER_OP_GET_CONTEXT_ROOT: | |
1052 | { | |
1053 | if (vstack_push(stack)) { | |
1054 | ret = -EINVAL; | |
1055 | goto end; | |
1056 | } | |
1057 | vstack_ax(stack)->type = REG_PTR; | |
1058 | vstack_ax(stack)->load.type = LOAD_ROOT_CONTEXT; | |
1059 | next_pc += sizeof(struct load_op); | |
1060 | break; | |
1061 | } | |
1062 | case FILTER_OP_GET_APP_CONTEXT_ROOT: | |
1063 | { | |
1064 | if (vstack_push(stack)) { | |
1065 | ret = -EINVAL; | |
1066 | goto end; | |
1067 | } | |
1068 | vstack_ax(stack)->type = REG_PTR; | |
1069 | vstack_ax(stack)->load.type = LOAD_ROOT_APP_CONTEXT; | |
1070 | next_pc += sizeof(struct load_op); | |
1071 | break; | |
1072 | } | |
1073 | case FILTER_OP_GET_PAYLOAD_ROOT: | |
1074 | { | |
1075 | if (vstack_push(stack)) { | |
1076 | ret = -EINVAL; | |
1077 | goto end; | |
1078 | } | |
1079 | vstack_ax(stack)->type = REG_PTR; | |
1080 | vstack_ax(stack)->load.type = LOAD_ROOT_PAYLOAD; | |
1081 | next_pc += sizeof(struct load_op); | |
1082 | break; | |
1083 | } | |
1084 | ||
1085 | case FILTER_OP_LOAD_FIELD: | |
1086 | { | |
1087 | struct load_op *insn = (struct load_op *) pc; | |
1088 | ||
1089 | WARN_ON_ONCE(vstack_ax(stack)->type != REG_PTR); | |
1090 | /* Pop 1, push 1 */ | |
1091 | ret = specialize_load_field(vstack_ax(stack), insn); | |
1092 | if (ret) | |
1093 | goto end; | |
1094 | ||
1095 | next_pc += sizeof(struct load_op); | |
1096 | break; | |
1097 | } | |
1098 | ||
1099 | case FILTER_OP_LOAD_FIELD_S8: | |
1100 | case FILTER_OP_LOAD_FIELD_S16: | |
1101 | case FILTER_OP_LOAD_FIELD_S32: | |
1102 | case FILTER_OP_LOAD_FIELD_S64: | |
1103 | case FILTER_OP_LOAD_FIELD_U8: | |
1104 | case FILTER_OP_LOAD_FIELD_U16: | |
1105 | case FILTER_OP_LOAD_FIELD_U32: | |
1106 | case FILTER_OP_LOAD_FIELD_U64: | |
1107 | { | |
1108 | /* Pop 1, push 1 */ | |
1109 | vstack_ax(stack)->type = REG_S64; | |
1110 | next_pc += sizeof(struct load_op); | |
1111 | break; | |
1112 | } | |
1113 | ||
1114 | case FILTER_OP_LOAD_FIELD_STRING: | |
1115 | case FILTER_OP_LOAD_FIELD_SEQUENCE: | |
1116 | { | |
1117 | /* Pop 1, push 1 */ | |
1118 | vstack_ax(stack)->type = REG_STRING; | |
1119 | next_pc += sizeof(struct load_op); | |
1120 | break; | |
1121 | } | |
1122 | ||
1123 | case FILTER_OP_LOAD_FIELD_DOUBLE: | |
1124 | { | |
1125 | /* Pop 1, push 1 */ | |
1126 | vstack_ax(stack)->type = REG_DOUBLE; | |
1127 | next_pc += sizeof(struct load_op); | |
1128 | break; | |
1129 | } | |
1130 | ||
1131 | case FILTER_OP_GET_SYMBOL: | |
1132 | { | |
1133 | struct load_op *insn = (struct load_op *) pc; | |
1134 | ||
1135 | dbg_printk("op get symbol\n"); | |
1136 | switch (vstack_ax(stack)->load.type) { | |
1137 | case LOAD_OBJECT: | |
1138 | printk(KERN_WARNING "Nested fields not implemented yet.\n"); | |
1139 | ret = -EINVAL; | |
1140 | goto end; | |
1141 | case LOAD_ROOT_CONTEXT: | |
1142 | /* Lookup context field. */ | |
1143 | ret = specialize_context_lookup(bytecode, insn, | |
1144 | &vstack_ax(stack)->load); | |
1145 | if (ret) | |
1146 | goto end; | |
1147 | break; | |
1148 | case LOAD_ROOT_APP_CONTEXT: | |
1149 | ret = -EINVAL; | |
1150 | goto end; | |
1151 | case LOAD_ROOT_PAYLOAD: | |
1152 | /* Lookup event payload field. */ | |
1153 | ret = specialize_event_payload_lookup(event, | |
1154 | bytecode, insn, | |
1155 | &vstack_ax(stack)->load); | |
1156 | if (ret) | |
1157 | goto end; | |
1158 | break; | |
1159 | } | |
1160 | next_pc += sizeof(struct load_op) + sizeof(struct get_symbol); | |
1161 | break; | |
1162 | } | |
1163 | ||
1164 | case FILTER_OP_GET_SYMBOL_FIELD: | |
1165 | { | |
1166 | /* Always generated by specialize phase. */ | |
1167 | ret = -EINVAL; | |
1168 | goto end; | |
1169 | } | |
1170 | ||
1171 | case FILTER_OP_GET_INDEX_U16: | |
1172 | { | |
1173 | struct load_op *insn = (struct load_op *) pc; | |
1174 | struct get_index_u16 *index = (struct get_index_u16 *) insn->data; | |
1175 | ||
1176 | dbg_printk("op get index u16\n"); | |
1177 | /* Pop 1, push 1 */ | |
1178 | ret = specialize_get_index(bytecode, insn, index->index, | |
1179 | vstack_ax(stack), sizeof(*index)); | |
1180 | if (ret) | |
1181 | goto end; | |
1182 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16); | |
1183 | break; | |
1184 | } | |
1185 | ||
1186 | case FILTER_OP_GET_INDEX_U64: | |
1187 | { | |
1188 | struct load_op *insn = (struct load_op *) pc; | |
1189 | struct get_index_u64 *index = (struct get_index_u64 *) insn->data; | |
1190 | ||
1191 | dbg_printk("op get index u64\n"); | |
1192 | /* Pop 1, push 1 */ | |
1193 | ret = specialize_get_index(bytecode, insn, index->index, | |
1194 | vstack_ax(stack), sizeof(*index)); | |
1195 | if (ret) | |
1196 | goto end; | |
1197 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64); | |
1198 | break; | |
1199 | } | |
1200 | ||
07dfc1d0 MD |
1201 | } |
1202 | } | |
1203 | end: | |
1204 | return ret; | |
1205 | } |