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> |
2df37e95 | 11 | #include <lttng/filter.h> |
a071f25d | 12 | #include <lttng/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: | |
5a15f70c | 122 | printk(KERN_WARNING "LTTng: filter: Double type unsupported\n\n"); |
3834b99f MD |
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: | |
5a15f70c | 142 | printk(KERN_WARNING "LTTng: filter: Sequences, arrays, struct and variant cannot be loaded (nested types).\n"); |
3834b99f MD |
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 | { | |
ceabb767 | 201 | const struct lttng_integer_type *integer_type; |
3834b99f MD |
202 | const struct lttng_event_field *field; |
203 | uint32_t elem_len, num_elems; | |
204 | int signedness; | |
205 | ||
206 | field = stack_top->load.field; | |
ceabb767 MD |
207 | if (!lttng_is_bytewise_integer(field->type.u.array_nestable.elem_type)) { |
208 | ret = -EINVAL; | |
209 | goto end; | |
210 | } | |
211 | integer_type = &field->type.u.array_nestable.elem_type->u.integer; | |
212 | num_elems = field->type.u.array_nestable.length; | |
213 | elem_len = integer_type->size; | |
214 | signedness = integer_type->signedness; | |
3834b99f MD |
215 | if (index >= num_elems) { |
216 | ret = -EINVAL; | |
217 | goto end; | |
218 | } | |
219 | ret = specialize_get_index_object_type(&stack_top->load.object_type, | |
220 | signedness, elem_len); | |
221 | if (ret) | |
222 | goto end; | |
223 | gid.offset = index * (elem_len / CHAR_BIT); | |
224 | gid.array_len = num_elems * (elem_len / CHAR_BIT); | |
225 | gid.elem.type = stack_top->load.object_type; | |
226 | gid.elem.len = elem_len; | |
ceabb767 | 227 | if (integer_type->reverse_byte_order) |
3834b99f MD |
228 | gid.elem.rev_bo = true; |
229 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
230 | break; | |
231 | } | |
232 | case OBJECT_TYPE_SEQUENCE: | |
233 | { | |
ceabb767 | 234 | const struct lttng_integer_type *integer_type; |
3834b99f MD |
235 | const struct lttng_event_field *field; |
236 | uint32_t elem_len; | |
237 | int signedness; | |
238 | ||
239 | field = stack_top->load.field; | |
ceabb767 MD |
240 | if (!lttng_is_bytewise_integer(field->type.u.sequence_nestable.elem_type)) { |
241 | ret = -EINVAL; | |
242 | goto end; | |
243 | } | |
244 | integer_type = &field->type.u.sequence_nestable.elem_type->u.integer; | |
245 | elem_len = integer_type->size; | |
246 | signedness = integer_type->signedness; | |
3834b99f MD |
247 | ret = specialize_get_index_object_type(&stack_top->load.object_type, |
248 | signedness, elem_len); | |
249 | if (ret) | |
250 | goto end; | |
251 | gid.offset = index * (elem_len / CHAR_BIT); | |
252 | gid.elem.type = stack_top->load.object_type; | |
253 | gid.elem.len = elem_len; | |
ceabb767 | 254 | if (integer_type->reverse_byte_order) |
3834b99f MD |
255 | gid.elem.rev_bo = true; |
256 | stack_top->load.rev_bo = gid.elem.rev_bo; | |
257 | break; | |
258 | } | |
259 | case OBJECT_TYPE_STRUCT: | |
260 | /* Only generated by the specialize phase. */ | |
261 | case OBJECT_TYPE_VARIANT: /* Fall-through */ | |
262 | default: | |
5a15f70c | 263 | printk(KERN_WARNING "LTTng: filter: Unexpected get index type %d", |
3834b99f MD |
264 | (int) stack_top->load.object_type); |
265 | ret = -EINVAL; | |
266 | goto end; | |
267 | } | |
268 | break; | |
269 | case LOAD_ROOT_CONTEXT: | |
270 | case LOAD_ROOT_APP_CONTEXT: | |
271 | case LOAD_ROOT_PAYLOAD: | |
5a15f70c | 272 | printk(KERN_WARNING "LTTng: filter: Index lookup for root field not implemented yet.\n"); |
3834b99f MD |
273 | ret = -EINVAL; |
274 | goto end; | |
275 | } | |
276 | data_offset = bytecode_push_data(runtime, &gid, | |
277 | __alignof__(gid), sizeof(gid)); | |
278 | if (data_offset < 0) { | |
279 | ret = -EINVAL; | |
280 | goto end; | |
281 | } | |
282 | switch (idx_len) { | |
283 | case 2: | |
284 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
285 | break; | |
286 | case 8: | |
287 | ((struct get_index_u64 *) insn->data)->index = data_offset; | |
288 | break; | |
289 | default: | |
290 | ret = -EINVAL; | |
291 | goto end; | |
292 | } | |
293 | ||
294 | return 0; | |
295 | ||
296 | end: | |
297 | return ret; | |
298 | } | |
299 | ||
2dfda770 FD |
300 | static int specialize_context_lookup_name(struct lttng_ctx *ctx, |
301 | struct bytecode_runtime *bytecode, | |
3834b99f MD |
302 | struct load_op *insn) |
303 | { | |
304 | uint16_t offset; | |
305 | const char *name; | |
306 | ||
307 | offset = ((struct get_symbol *) insn->data)->offset; | |
308 | name = bytecode->p.bc->bc.data + bytecode->p.bc->bc.reloc_offset + offset; | |
2dfda770 | 309 | return lttng_get_context_index(ctx, name); |
3834b99f MD |
310 | } |
311 | ||
312 | static int specialize_load_object(const struct lttng_event_field *field, | |
313 | struct vstack_load *load, bool is_context) | |
314 | { | |
315 | load->type = LOAD_OBJECT; | |
1242217a | 316 | |
3834b99f MD |
317 | switch (field->type.atype) { |
318 | case atype_integer: | |
ceabb767 | 319 | if (field->type.u.integer.signedness) |
3834b99f MD |
320 | load->object_type = OBJECT_TYPE_S64; |
321 | else | |
322 | load->object_type = OBJECT_TYPE_U64; | |
323 | load->rev_bo = false; | |
324 | break; | |
ceabb767 | 325 | case atype_enum_nestable: |
3834b99f MD |
326 | { |
327 | const struct lttng_integer_type *itype = | |
ceabb767 | 328 | &field->type.u.enum_nestable.container_type->u.integer; |
3834b99f MD |
329 | |
330 | if (itype->signedness) | |
331 | load->object_type = OBJECT_TYPE_S64; | |
332 | else | |
333 | load->object_type = OBJECT_TYPE_U64; | |
334 | load->rev_bo = false; | |
335 | break; | |
336 | } | |
ceabb767 MD |
337 | case atype_array_nestable: |
338 | if (!lttng_is_bytewise_integer(field->type.u.array_nestable.elem_type)) { | |
5a15f70c | 339 | printk(KERN_WARNING "LTTng: filter Array nesting only supports integer types.\n"); |
3834b99f MD |
340 | return -EINVAL; |
341 | } | |
342 | if (is_context) { | |
343 | load->object_type = OBJECT_TYPE_STRING; | |
344 | } else { | |
ceabb767 | 345 | if (field->type.u.array_nestable.elem_type->u.integer.encoding == lttng_encode_none) { |
3834b99f MD |
346 | load->object_type = OBJECT_TYPE_ARRAY; |
347 | load->field = field; | |
348 | } else { | |
349 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
350 | } | |
351 | } | |
352 | break; | |
ceabb767 MD |
353 | case atype_sequence_nestable: |
354 | if (!lttng_is_bytewise_integer(field->type.u.sequence_nestable.elem_type)) { | |
5a15f70c | 355 | printk(KERN_WARNING "LTTng: filter Sequence nesting only supports integer types.\n"); |
3834b99f MD |
356 | return -EINVAL; |
357 | } | |
358 | if (is_context) { | |
359 | load->object_type = OBJECT_TYPE_STRING; | |
360 | } else { | |
ceabb767 | 361 | if (field->type.u.sequence_nestable.elem_type->u.integer.encoding == lttng_encode_none) { |
3834b99f MD |
362 | load->object_type = OBJECT_TYPE_SEQUENCE; |
363 | load->field = field; | |
364 | } else { | |
365 | load->object_type = OBJECT_TYPE_STRING_SEQUENCE; | |
366 | } | |
367 | } | |
368 | break; | |
3834b99f MD |
369 | case atype_string: |
370 | load->object_type = OBJECT_TYPE_STRING; | |
371 | break; | |
ceabb767 | 372 | case atype_struct_nestable: |
5a15f70c | 373 | printk(KERN_WARNING "LTTng: filter: Structure type cannot be loaded.\n"); |
3834b99f | 374 | return -EINVAL; |
ceabb767 | 375 | case atype_variant_nestable: |
5a15f70c | 376 | printk(KERN_WARNING "LTTng: filter: Variant type cannot be loaded.\n"); |
ceabb767 | 377 | return -EINVAL; |
3834b99f | 378 | default: |
5a15f70c | 379 | printk(KERN_WARNING "LTTng: filter: Unknown type: %d", (int) field->type.atype); |
3834b99f MD |
380 | return -EINVAL; |
381 | } | |
382 | return 0; | |
383 | } | |
384 | ||
2dfda770 FD |
385 | static int specialize_context_lookup(struct lttng_ctx *ctx, |
386 | struct bytecode_runtime *runtime, | |
3834b99f MD |
387 | struct load_op *insn, |
388 | struct vstack_load *load) | |
389 | { | |
390 | int idx, ret; | |
391 | struct lttng_ctx_field *ctx_field; | |
392 | struct lttng_event_field *field; | |
393 | struct filter_get_index_data gid; | |
394 | ssize_t data_offset; | |
395 | ||
2dfda770 | 396 | idx = specialize_context_lookup_name(ctx, runtime, insn); |
3834b99f MD |
397 | if (idx < 0) { |
398 | return -ENOENT; | |
399 | } | |
400 | ctx_field = <tng_static_ctx->fields[idx]; | |
401 | field = &ctx_field->event_field; | |
402 | ret = specialize_load_object(field, load, true); | |
403 | if (ret) | |
404 | return ret; | |
405 | /* Specialize each get_symbol into a get_index. */ | |
406 | insn->op = FILTER_OP_GET_INDEX_U16; | |
407 | memset(&gid, 0, sizeof(gid)); | |
408 | gid.ctx_index = idx; | |
409 | gid.elem.type = load->object_type; | |
03cb0cdd | 410 | gid.field = field; |
3834b99f MD |
411 | data_offset = bytecode_push_data(runtime, &gid, |
412 | __alignof__(gid), sizeof(gid)); | |
413 | if (data_offset < 0) { | |
414 | return -EINVAL; | |
415 | } | |
416 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
417 | return 0; | |
418 | } | |
419 | ||
2dfda770 | 420 | static int specialize_payload_lookup(const struct lttng_event_desc *event_desc, |
3834b99f MD |
421 | struct bytecode_runtime *runtime, |
422 | struct load_op *insn, | |
423 | struct vstack_load *load) | |
424 | { | |
425 | const char *name; | |
426 | uint16_t offset; | |
3834b99f MD |
427 | unsigned int i, nr_fields; |
428 | bool found = false; | |
429 | uint32_t field_offset = 0; | |
430 | const struct lttng_event_field *field; | |
431 | int ret; | |
432 | struct filter_get_index_data gid; | |
433 | ssize_t data_offset; | |
434 | ||
2dfda770 | 435 | nr_fields = event_desc->nr_fields; |
3834b99f MD |
436 | offset = ((struct get_symbol *) insn->data)->offset; |
437 | name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset; | |
438 | for (i = 0; i < nr_fields; i++) { | |
2dfda770 | 439 | field = &event_desc->fields[i]; |
ceabb767 MD |
440 | if (field->nofilter) { |
441 | continue; | |
442 | } | |
3834b99f MD |
443 | if (!strcmp(field->name, name)) { |
444 | found = true; | |
445 | break; | |
446 | } | |
447 | /* compute field offset on stack */ | |
448 | switch (field->type.atype) { | |
449 | case atype_integer: | |
ceabb767 | 450 | case atype_enum_nestable: |
3834b99f MD |
451 | field_offset += sizeof(int64_t); |
452 | break; | |
ceabb767 MD |
453 | case atype_array_nestable: |
454 | case atype_sequence_nestable: | |
3834b99f MD |
455 | field_offset += sizeof(unsigned long); |
456 | field_offset += sizeof(void *); | |
457 | break; | |
458 | case atype_string: | |
459 | field_offset += sizeof(void *); | |
460 | break; | |
461 | default: | |
462 | ret = -EINVAL; | |
463 | goto end; | |
464 | } | |
465 | } | |
466 | if (!found) { | |
467 | ret = -EINVAL; | |
468 | goto end; | |
469 | } | |
470 | ||
471 | ret = specialize_load_object(field, load, false); | |
472 | if (ret) | |
473 | goto end; | |
474 | ||
475 | /* Specialize each get_symbol into a get_index. */ | |
476 | insn->op = FILTER_OP_GET_INDEX_U16; | |
477 | memset(&gid, 0, sizeof(gid)); | |
478 | gid.offset = field_offset; | |
479 | gid.elem.type = load->object_type; | |
03cb0cdd | 480 | gid.field = field; |
3834b99f MD |
481 | data_offset = bytecode_push_data(runtime, &gid, |
482 | __alignof__(gid), sizeof(gid)); | |
483 | if (data_offset < 0) { | |
484 | ret = -EINVAL; | |
485 | goto end; | |
486 | } | |
487 | ((struct get_index_u16 *) insn->data)->index = data_offset; | |
488 | ret = 0; | |
489 | end: | |
490 | return ret; | |
491 | } | |
492 | ||
2dfda770 | 493 | int lttng_filter_specialize_bytecode(const struct lttng_event_desc *event_desc, |
3834b99f | 494 | struct bytecode_runtime *bytecode) |
07dfc1d0 MD |
495 | { |
496 | void *pc, *next_pc, *start_pc; | |
497 | int ret = -EINVAL; | |
498 | struct vstack _stack; | |
499 | struct vstack *stack = &_stack; | |
2dfda770 | 500 | struct lttng_ctx *ctx = bytecode->p.ctx; |
07dfc1d0 MD |
501 | |
502 | vstack_init(stack); | |
503 | ||
3834b99f | 504 | start_pc = &bytecode->code[0]; |
07dfc1d0 MD |
505 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; |
506 | pc = next_pc) { | |
507 | switch (*(filter_opcode_t *) pc) { | |
508 | case FILTER_OP_UNKNOWN: | |
509 | default: | |
5a15f70c | 510 | printk(KERN_WARNING "LTTng: filter: unknown bytecode op %u\n", |
07dfc1d0 MD |
511 | (unsigned int) *(filter_opcode_t *) pc); |
512 | ret = -EINVAL; | |
513 | goto end; | |
514 | ||
515 | case FILTER_OP_RETURN: | |
57ba4b41 | 516 | case FILTER_OP_RETURN_S64: |
07dfc1d0 MD |
517 | ret = 0; |
518 | goto end; | |
519 | ||
520 | /* binary */ | |
521 | case FILTER_OP_MUL: | |
522 | case FILTER_OP_DIV: | |
523 | case FILTER_OP_MOD: | |
524 | case FILTER_OP_PLUS: | |
525 | case FILTER_OP_MINUS: | |
5a15f70c | 526 | printk(KERN_WARNING "LTTng: filter: unsupported bytecode op %u\n", |
07dfc1d0 MD |
527 | (unsigned int) *(filter_opcode_t *) pc); |
528 | ret = -EINVAL; | |
529 | goto end; | |
530 | ||
531 | case FILTER_OP_EQ: | |
532 | { | |
533 | struct binary_op *insn = (struct binary_op *) pc; | |
534 | ||
535 | switch(vstack_ax(stack)->type) { | |
536 | default: | |
5a15f70c | 537 | printk(KERN_WARNING "LTTng: filter: unknown register type\n"); |
07dfc1d0 MD |
538 | ret = -EINVAL; |
539 | goto end; | |
540 | ||
541 | case REG_STRING: | |
02aca193 PP |
542 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
543 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
544 | else | |
545 | insn->op = FILTER_OP_EQ_STRING; | |
546 | break; | |
547 | case REG_STAR_GLOB_STRING: | |
548 | insn->op = FILTER_OP_EQ_STAR_GLOB_STRING; | |
07dfc1d0 MD |
549 | break; |
550 | case REG_S64: | |
551 | if (vstack_bx(stack)->type == REG_S64) | |
552 | insn->op = FILTER_OP_EQ_S64; | |
553 | else | |
554 | insn->op = FILTER_OP_EQ_DOUBLE_S64; | |
555 | break; | |
556 | case REG_DOUBLE: | |
557 | if (vstack_bx(stack)->type == REG_S64) | |
558 | insn->op = FILTER_OP_EQ_S64_DOUBLE; | |
559 | else | |
560 | insn->op = FILTER_OP_EQ_DOUBLE; | |
561 | break; | |
562 | } | |
563 | /* Pop 2, push 1 */ | |
564 | if (vstack_pop(stack)) { | |
565 | ret = -EINVAL; | |
566 | goto end; | |
567 | } | |
568 | vstack_ax(stack)->type = REG_S64; | |
569 | next_pc += sizeof(struct binary_op); | |
570 | break; | |
571 | } | |
572 | ||
573 | case FILTER_OP_NE: | |
574 | { | |
575 | struct binary_op *insn = (struct binary_op *) pc; | |
576 | ||
577 | switch(vstack_ax(stack)->type) { | |
578 | default: | |
5a15f70c | 579 | printk(KERN_WARNING "LTTng: filter: unknown register type\n"); |
07dfc1d0 MD |
580 | ret = -EINVAL; |
581 | goto end; | |
582 | ||
583 | case REG_STRING: | |
02aca193 PP |
584 | if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING) |
585 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
586 | else | |
587 | insn->op = FILTER_OP_NE_STRING; | |
588 | break; | |
589 | case REG_STAR_GLOB_STRING: | |
590 | insn->op = FILTER_OP_NE_STAR_GLOB_STRING; | |
07dfc1d0 MD |
591 | break; |
592 | case REG_S64: | |
593 | if (vstack_bx(stack)->type == REG_S64) | |
594 | insn->op = FILTER_OP_NE_S64; | |
595 | else | |
596 | insn->op = FILTER_OP_NE_DOUBLE_S64; | |
597 | break; | |
598 | case REG_DOUBLE: | |
599 | if (vstack_bx(stack)->type == REG_S64) | |
600 | insn->op = FILTER_OP_NE_S64_DOUBLE; | |
601 | else | |
602 | insn->op = FILTER_OP_NE_DOUBLE; | |
603 | break; | |
604 | } | |
605 | /* Pop 2, push 1 */ | |
606 | if (vstack_pop(stack)) { | |
607 | ret = -EINVAL; | |
608 | goto end; | |
609 | } | |
610 | vstack_ax(stack)->type = REG_S64; | |
611 | next_pc += sizeof(struct binary_op); | |
612 | break; | |
613 | } | |
614 | ||
615 | case FILTER_OP_GT: | |
616 | { | |
617 | struct binary_op *insn = (struct binary_op *) pc; | |
618 | ||
619 | switch(vstack_ax(stack)->type) { | |
620 | default: | |
5a15f70c | 621 | printk(KERN_WARNING "LTTng: filter: unknown register type\n"); |
07dfc1d0 MD |
622 | ret = -EINVAL; |
623 | goto end; | |
624 | ||
02aca193 | 625 | case REG_STAR_GLOB_STRING: |
5a15f70c | 626 | printk(KERN_WARNING "LTTng: filter: invalid register type for '>' binary operator\n"); |
02aca193 PP |
627 | ret = -EINVAL; |
628 | goto end; | |
07dfc1d0 MD |
629 | case REG_STRING: |
630 | insn->op = FILTER_OP_GT_STRING; | |
631 | break; | |
632 | case REG_S64: | |
633 | if (vstack_bx(stack)->type == REG_S64) | |
634 | insn->op = FILTER_OP_GT_S64; | |
635 | else | |
636 | insn->op = FILTER_OP_GT_DOUBLE_S64; | |
637 | break; | |
638 | case REG_DOUBLE: | |
639 | if (vstack_bx(stack)->type == REG_S64) | |
640 | insn->op = FILTER_OP_GT_S64_DOUBLE; | |
641 | else | |
642 | insn->op = FILTER_OP_GT_DOUBLE; | |
643 | break; | |
644 | } | |
645 | /* Pop 2, push 1 */ | |
646 | if (vstack_pop(stack)) { | |
647 | ret = -EINVAL; | |
648 | goto end; | |
649 | } | |
650 | vstack_ax(stack)->type = REG_S64; | |
651 | next_pc += sizeof(struct binary_op); | |
652 | break; | |
653 | } | |
654 | ||
655 | case FILTER_OP_LT: | |
656 | { | |
657 | struct binary_op *insn = (struct binary_op *) pc; | |
658 | ||
659 | switch(vstack_ax(stack)->type) { | |
660 | default: | |
5a15f70c | 661 | printk(KERN_WARNING "LTTng: filter: unknown register type\n"); |
07dfc1d0 MD |
662 | ret = -EINVAL; |
663 | goto end; | |
664 | ||
02aca193 | 665 | case REG_STAR_GLOB_STRING: |
5a15f70c | 666 | printk(KERN_WARNING "LTTng: filter: invalid register type for '<' binary operator\n"); |
02aca193 PP |
667 | ret = -EINVAL; |
668 | goto end; | |
07dfc1d0 MD |
669 | case REG_STRING: |
670 | insn->op = FILTER_OP_LT_STRING; | |
671 | break; | |
672 | case REG_S64: | |
673 | if (vstack_bx(stack)->type == REG_S64) | |
674 | insn->op = FILTER_OP_LT_S64; | |
675 | else | |
676 | insn->op = FILTER_OP_LT_DOUBLE_S64; | |
677 | break; | |
678 | case REG_DOUBLE: | |
679 | if (vstack_bx(stack)->type == REG_S64) | |
680 | insn->op = FILTER_OP_LT_S64_DOUBLE; | |
681 | else | |
682 | insn->op = FILTER_OP_LT_DOUBLE; | |
683 | break; | |
684 | } | |
685 | /* Pop 2, push 1 */ | |
686 | if (vstack_pop(stack)) { | |
687 | ret = -EINVAL; | |
688 | goto end; | |
689 | } | |
690 | vstack_ax(stack)->type = REG_S64; | |
691 | next_pc += sizeof(struct binary_op); | |
692 | break; | |
693 | } | |
694 | ||
695 | case FILTER_OP_GE: | |
696 | { | |
697 | struct binary_op *insn = (struct binary_op *) pc; | |
698 | ||
699 | switch(vstack_ax(stack)->type) { | |
700 | default: | |
5a15f70c | 701 | printk(KERN_WARNING "LTTng: filter: unknown register type\n"); |
07dfc1d0 MD |
702 | ret = -EINVAL; |
703 | goto end; | |
704 | ||
02aca193 | 705 | case REG_STAR_GLOB_STRING: |
5a15f70c | 706 | printk(KERN_WARNING "LTTng: filter: invalid register type for '>=' binary operator\n"); |
02aca193 PP |
707 | ret = -EINVAL; |
708 | goto end; | |
07dfc1d0 MD |
709 | case REG_STRING: |
710 | insn->op = FILTER_OP_GE_STRING; | |
711 | break; | |
712 | case REG_S64: | |
713 | if (vstack_bx(stack)->type == REG_S64) | |
714 | insn->op = FILTER_OP_GE_S64; | |
715 | else | |
716 | insn->op = FILTER_OP_GE_DOUBLE_S64; | |
717 | break; | |
718 | case REG_DOUBLE: | |
719 | if (vstack_bx(stack)->type == REG_S64) | |
720 | insn->op = FILTER_OP_GE_S64_DOUBLE; | |
721 | else | |
722 | insn->op = FILTER_OP_GE_DOUBLE; | |
723 | break; | |
724 | } | |
725 | /* Pop 2, push 1 */ | |
726 | if (vstack_pop(stack)) { | |
727 | ret = -EINVAL; | |
728 | goto end; | |
729 | } | |
730 | vstack_ax(stack)->type = REG_S64; | |
731 | next_pc += sizeof(struct binary_op); | |
732 | break; | |
733 | } | |
734 | case FILTER_OP_LE: | |
735 | { | |
736 | struct binary_op *insn = (struct binary_op *) pc; | |
737 | ||
738 | switch(vstack_ax(stack)->type) { | |
739 | default: | |
5a15f70c | 740 | printk(KERN_WARNING "LTTng: filter: unknown register type\n"); |
07dfc1d0 MD |
741 | ret = -EINVAL; |
742 | goto end; | |
743 | ||
02aca193 | 744 | case REG_STAR_GLOB_STRING: |
5a15f70c | 745 | printk(KERN_WARNING "LTTng: filter: invalid register type for '<=' binary operator\n"); |
02aca193 PP |
746 | ret = -EINVAL; |
747 | goto end; | |
07dfc1d0 MD |
748 | case REG_STRING: |
749 | insn->op = FILTER_OP_LE_STRING; | |
750 | break; | |
751 | case REG_S64: | |
752 | if (vstack_bx(stack)->type == REG_S64) | |
753 | insn->op = FILTER_OP_LE_S64; | |
754 | else | |
755 | insn->op = FILTER_OP_LE_DOUBLE_S64; | |
756 | break; | |
757 | case REG_DOUBLE: | |
758 | if (vstack_bx(stack)->type == REG_S64) | |
759 | insn->op = FILTER_OP_LE_S64_DOUBLE; | |
760 | else | |
761 | insn->op = FILTER_OP_LE_DOUBLE; | |
762 | break; | |
763 | } | |
764 | vstack_ax(stack)->type = REG_S64; | |
765 | next_pc += sizeof(struct binary_op); | |
766 | break; | |
767 | } | |
768 | ||
769 | case FILTER_OP_EQ_STRING: | |
770 | case FILTER_OP_NE_STRING: | |
771 | case FILTER_OP_GT_STRING: | |
772 | case FILTER_OP_LT_STRING: | |
773 | case FILTER_OP_GE_STRING: | |
774 | case FILTER_OP_LE_STRING: | |
02aca193 PP |
775 | case FILTER_OP_EQ_STAR_GLOB_STRING: |
776 | case FILTER_OP_NE_STAR_GLOB_STRING: | |
07dfc1d0 MD |
777 | case FILTER_OP_EQ_S64: |
778 | case FILTER_OP_NE_S64: | |
779 | case FILTER_OP_GT_S64: | |
780 | case FILTER_OP_LT_S64: | |
781 | case FILTER_OP_GE_S64: | |
782 | case FILTER_OP_LE_S64: | |
783 | case FILTER_OP_EQ_DOUBLE: | |
784 | case FILTER_OP_NE_DOUBLE: | |
785 | case FILTER_OP_GT_DOUBLE: | |
786 | case FILTER_OP_LT_DOUBLE: | |
787 | case FILTER_OP_GE_DOUBLE: | |
788 | case FILTER_OP_LE_DOUBLE: | |
789 | case FILTER_OP_EQ_DOUBLE_S64: | |
790 | case FILTER_OP_NE_DOUBLE_S64: | |
791 | case FILTER_OP_GT_DOUBLE_S64: | |
792 | case FILTER_OP_LT_DOUBLE_S64: | |
793 | case FILTER_OP_GE_DOUBLE_S64: | |
794 | case FILTER_OP_LE_DOUBLE_S64: | |
795 | case FILTER_OP_EQ_S64_DOUBLE: | |
796 | case FILTER_OP_NE_S64_DOUBLE: | |
797 | case FILTER_OP_GT_S64_DOUBLE: | |
798 | case FILTER_OP_LT_S64_DOUBLE: | |
799 | case FILTER_OP_GE_S64_DOUBLE: | |
800 | case FILTER_OP_LE_S64_DOUBLE: | |
e16c054b MD |
801 | case FILTER_OP_BIT_RSHIFT: |
802 | case FILTER_OP_BIT_LSHIFT: | |
3834b99f MD |
803 | case FILTER_OP_BIT_AND: |
804 | case FILTER_OP_BIT_OR: | |
805 | case FILTER_OP_BIT_XOR: | |
07dfc1d0 MD |
806 | { |
807 | /* Pop 2, push 1 */ | |
808 | if (vstack_pop(stack)) { | |
809 | ret = -EINVAL; | |
810 | goto end; | |
811 | } | |
812 | vstack_ax(stack)->type = REG_S64; | |
813 | next_pc += sizeof(struct binary_op); | |
814 | break; | |
815 | } | |
816 | ||
817 | /* unary */ | |
818 | case FILTER_OP_UNARY_PLUS: | |
819 | { | |
820 | struct unary_op *insn = (struct unary_op *) pc; | |
821 | ||
822 | switch(vstack_ax(stack)->type) { | |
823 | default: | |
5a15f70c | 824 | printk(KERN_WARNING "LTTng: filter: unknown register type\n"); |
07dfc1d0 MD |
825 | ret = -EINVAL; |
826 | goto end; | |
827 | ||
828 | case REG_S64: | |
829 | insn->op = FILTER_OP_UNARY_PLUS_S64; | |
830 | break; | |
831 | case REG_DOUBLE: | |
832 | insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; | |
833 | break; | |
834 | } | |
835 | /* Pop 1, push 1 */ | |
836 | next_pc += sizeof(struct unary_op); | |
837 | break; | |
838 | } | |
839 | ||
840 | case FILTER_OP_UNARY_MINUS: | |
841 | { | |
842 | struct unary_op *insn = (struct unary_op *) pc; | |
843 | ||
844 | switch(vstack_ax(stack)->type) { | |
845 | default: | |
5a15f70c | 846 | printk(KERN_WARNING "LTTng: filter: unknown register type\n"); |
07dfc1d0 MD |
847 | ret = -EINVAL; |
848 | goto end; | |
849 | ||
850 | case REG_S64: | |
851 | insn->op = FILTER_OP_UNARY_MINUS_S64; | |
852 | break; | |
853 | case REG_DOUBLE: | |
854 | insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; | |
855 | break; | |
856 | } | |
857 | /* Pop 1, push 1 */ | |
858 | next_pc += sizeof(struct unary_op); | |
859 | break; | |
860 | } | |
861 | ||
862 | case FILTER_OP_UNARY_NOT: | |
863 | { | |
864 | struct unary_op *insn = (struct unary_op *) pc; | |
865 | ||
866 | switch(vstack_ax(stack)->type) { | |
867 | default: | |
5a15f70c | 868 | printk(KERN_WARNING "LTTng: filter: unknown register type\n"); |
07dfc1d0 MD |
869 | ret = -EINVAL; |
870 | goto end; | |
871 | ||
872 | case REG_S64: | |
873 | insn->op = FILTER_OP_UNARY_NOT_S64; | |
874 | break; | |
875 | case REG_DOUBLE: | |
876 | insn->op = FILTER_OP_UNARY_NOT_DOUBLE; | |
877 | break; | |
878 | } | |
879 | /* Pop 1, push 1 */ | |
880 | next_pc += sizeof(struct unary_op); | |
881 | break; | |
882 | } | |
883 | ||
e16c054b MD |
884 | case FILTER_OP_UNARY_BIT_NOT: |
885 | { | |
886 | /* Pop 1, push 1 */ | |
887 | next_pc += sizeof(struct unary_op); | |
888 | break; | |
889 | } | |
890 | ||
07dfc1d0 MD |
891 | case FILTER_OP_UNARY_PLUS_S64: |
892 | case FILTER_OP_UNARY_MINUS_S64: | |
893 | case FILTER_OP_UNARY_NOT_S64: | |
894 | case FILTER_OP_UNARY_PLUS_DOUBLE: | |
895 | case FILTER_OP_UNARY_MINUS_DOUBLE: | |
896 | case FILTER_OP_UNARY_NOT_DOUBLE: | |
897 | { | |
898 | /* Pop 1, push 1 */ | |
899 | next_pc += sizeof(struct unary_op); | |
900 | break; | |
901 | } | |
902 | ||
903 | /* logical */ | |
904 | case FILTER_OP_AND: | |
905 | case FILTER_OP_OR: | |
906 | { | |
907 | /* Continue to next instruction */ | |
908 | /* Pop 1 when jump not taken */ | |
909 | if (vstack_pop(stack)) { | |
910 | ret = -EINVAL; | |
911 | goto end; | |
912 | } | |
913 | next_pc += sizeof(struct logical_op); | |
914 | break; | |
915 | } | |
916 | ||
917 | /* load field ref */ | |
918 | case FILTER_OP_LOAD_FIELD_REF: | |
919 | { | |
5a15f70c | 920 | printk(KERN_WARNING "LTTng: filter: Unknown field ref type\n"); |
07dfc1d0 MD |
921 | ret = -EINVAL; |
922 | goto end; | |
923 | } | |
924 | /* get context ref */ | |
925 | case FILTER_OP_GET_CONTEXT_REF: | |
926 | { | |
5a15f70c | 927 | printk(KERN_WARNING "LTTng: filter: Unknown get context ref type\n"); |
07dfc1d0 MD |
928 | ret = -EINVAL; |
929 | goto end; | |
930 | } | |
931 | case FILTER_OP_LOAD_FIELD_REF_STRING: | |
932 | case FILTER_OP_LOAD_FIELD_REF_SEQUENCE: | |
933 | case FILTER_OP_GET_CONTEXT_REF_STRING: | |
f127e61e MD |
934 | case FILTER_OP_LOAD_FIELD_REF_USER_STRING: |
935 | case FILTER_OP_LOAD_FIELD_REF_USER_SEQUENCE: | |
07dfc1d0 MD |
936 | { |
937 | if (vstack_push(stack)) { | |
938 | ret = -EINVAL; | |
939 | goto end; | |
940 | } | |
941 | vstack_ax(stack)->type = REG_STRING; | |
942 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
943 | break; | |
944 | } | |
945 | case FILTER_OP_LOAD_FIELD_REF_S64: | |
946 | case FILTER_OP_GET_CONTEXT_REF_S64: | |
947 | { | |
948 | if (vstack_push(stack)) { | |
949 | ret = -EINVAL; | |
950 | goto end; | |
951 | } | |
952 | vstack_ax(stack)->type = REG_S64; | |
953 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
954 | break; | |
955 | } | |
956 | case FILTER_OP_LOAD_FIELD_REF_DOUBLE: | |
957 | case FILTER_OP_GET_CONTEXT_REF_DOUBLE: | |
958 | { | |
959 | if (vstack_push(stack)) { | |
960 | ret = -EINVAL; | |
961 | goto end; | |
962 | } | |
963 | vstack_ax(stack)->type = REG_DOUBLE; | |
964 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
965 | break; | |
966 | } | |
967 | ||
968 | /* load from immediate operand */ | |
969 | case FILTER_OP_LOAD_STRING: | |
970 | { | |
971 | struct load_op *insn = (struct load_op *) pc; | |
972 | ||
973 | if (vstack_push(stack)) { | |
974 | ret = -EINVAL; | |
975 | goto end; | |
976 | } | |
977 | vstack_ax(stack)->type = REG_STRING; | |
978 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
979 | break; | |
980 | } | |
981 | ||
02aca193 PP |
982 | case FILTER_OP_LOAD_STAR_GLOB_STRING: |
983 | { | |
984 | struct load_op *insn = (struct load_op *) pc; | |
985 | ||
986 | if (vstack_push(stack)) { | |
987 | ret = -EINVAL; | |
988 | goto end; | |
989 | } | |
990 | vstack_ax(stack)->type = REG_STAR_GLOB_STRING; | |
991 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
992 | break; | |
993 | } | |
994 | ||
07dfc1d0 MD |
995 | case FILTER_OP_LOAD_S64: |
996 | { | |
997 | if (vstack_push(stack)) { | |
998 | ret = -EINVAL; | |
999 | goto end; | |
1000 | } | |
1001 | vstack_ax(stack)->type = REG_S64; | |
1002 | next_pc += sizeof(struct load_op) | |
1003 | + sizeof(struct literal_numeric); | |
1004 | break; | |
1005 | } | |
1006 | ||
1007 | case FILTER_OP_LOAD_DOUBLE: | |
1008 | { | |
1009 | if (vstack_push(stack)) { | |
1010 | ret = -EINVAL; | |
1011 | goto end; | |
1012 | } | |
1013 | vstack_ax(stack)->type = REG_DOUBLE; | |
1014 | next_pc += sizeof(struct load_op) | |
1015 | + sizeof(struct literal_double); | |
1016 | break; | |
1017 | } | |
1018 | ||
1019 | /* cast */ | |
1020 | case FILTER_OP_CAST_TO_S64: | |
1021 | { | |
1022 | struct cast_op *insn = (struct cast_op *) pc; | |
1023 | ||
1024 | switch (vstack_ax(stack)->type) { | |
1025 | default: | |
5a15f70c | 1026 | printk(KERN_WARNING "LTTng: filter: unknown register type\n"); |
07dfc1d0 MD |
1027 | ret = -EINVAL; |
1028 | goto end; | |
1029 | ||
1030 | case REG_STRING: | |
02aca193 | 1031 | case REG_STAR_GLOB_STRING: |
5a15f70c | 1032 | printk(KERN_WARNING "LTTng: filter: Cast op can only be applied to numeric or floating point registers\n"); |
07dfc1d0 MD |
1033 | ret = -EINVAL; |
1034 | goto end; | |
1035 | case REG_S64: | |
1036 | insn->op = FILTER_OP_CAST_NOP; | |
1037 | break; | |
1038 | case REG_DOUBLE: | |
1039 | insn->op = FILTER_OP_CAST_DOUBLE_TO_S64; | |
1040 | break; | |
1041 | } | |
1042 | /* Pop 1, push 1 */ | |
1043 | vstack_ax(stack)->type = REG_S64; | |
1044 | next_pc += sizeof(struct cast_op); | |
1045 | break; | |
1046 | } | |
1047 | case FILTER_OP_CAST_DOUBLE_TO_S64: | |
1048 | { | |
1049 | /* Pop 1, push 1 */ | |
1050 | vstack_ax(stack)->type = REG_S64; | |
1051 | next_pc += sizeof(struct cast_op); | |
1052 | break; | |
1053 | } | |
1054 | case FILTER_OP_CAST_NOP: | |
1055 | { | |
1056 | next_pc += sizeof(struct cast_op); | |
1057 | break; | |
1058 | } | |
1059 | ||
3834b99f MD |
1060 | /* |
1061 | * Instructions for recursive traversal through composed types. | |
1062 | */ | |
1063 | case FILTER_OP_GET_CONTEXT_ROOT: | |
1064 | { | |
1065 | if (vstack_push(stack)) { | |
1066 | ret = -EINVAL; | |
1067 | goto end; | |
1068 | } | |
1069 | vstack_ax(stack)->type = REG_PTR; | |
1070 | vstack_ax(stack)->load.type = LOAD_ROOT_CONTEXT; | |
1071 | next_pc += sizeof(struct load_op); | |
1072 | break; | |
1073 | } | |
1074 | case FILTER_OP_GET_APP_CONTEXT_ROOT: | |
1075 | { | |
1076 | if (vstack_push(stack)) { | |
1077 | ret = -EINVAL; | |
1078 | goto end; | |
1079 | } | |
1080 | vstack_ax(stack)->type = REG_PTR; | |
1081 | vstack_ax(stack)->load.type = LOAD_ROOT_APP_CONTEXT; | |
1082 | next_pc += sizeof(struct load_op); | |
1083 | break; | |
1084 | } | |
1085 | case FILTER_OP_GET_PAYLOAD_ROOT: | |
1086 | { | |
1087 | if (vstack_push(stack)) { | |
1088 | ret = -EINVAL; | |
1089 | goto end; | |
1090 | } | |
1091 | vstack_ax(stack)->type = REG_PTR; | |
1092 | vstack_ax(stack)->load.type = LOAD_ROOT_PAYLOAD; | |
1093 | next_pc += sizeof(struct load_op); | |
1094 | break; | |
1095 | } | |
1096 | ||
1097 | case FILTER_OP_LOAD_FIELD: | |
1098 | { | |
1099 | struct load_op *insn = (struct load_op *) pc; | |
1100 | ||
1101 | WARN_ON_ONCE(vstack_ax(stack)->type != REG_PTR); | |
1102 | /* Pop 1, push 1 */ | |
1103 | ret = specialize_load_field(vstack_ax(stack), insn); | |
1104 | if (ret) | |
1105 | goto end; | |
1106 | ||
1107 | next_pc += sizeof(struct load_op); | |
1108 | break; | |
1109 | } | |
1110 | ||
1111 | case FILTER_OP_LOAD_FIELD_S8: | |
1112 | case FILTER_OP_LOAD_FIELD_S16: | |
1113 | case FILTER_OP_LOAD_FIELD_S32: | |
1114 | case FILTER_OP_LOAD_FIELD_S64: | |
1115 | case FILTER_OP_LOAD_FIELD_U8: | |
1116 | case FILTER_OP_LOAD_FIELD_U16: | |
1117 | case FILTER_OP_LOAD_FIELD_U32: | |
1118 | case FILTER_OP_LOAD_FIELD_U64: | |
1119 | { | |
1120 | /* Pop 1, push 1 */ | |
1121 | vstack_ax(stack)->type = REG_S64; | |
1122 | next_pc += sizeof(struct load_op); | |
1123 | break; | |
1124 | } | |
1125 | ||
1126 | case FILTER_OP_LOAD_FIELD_STRING: | |
1127 | case FILTER_OP_LOAD_FIELD_SEQUENCE: | |
1128 | { | |
1129 | /* Pop 1, push 1 */ | |
1130 | vstack_ax(stack)->type = REG_STRING; | |
1131 | next_pc += sizeof(struct load_op); | |
1132 | break; | |
1133 | } | |
1134 | ||
1135 | case FILTER_OP_LOAD_FIELD_DOUBLE: | |
1136 | { | |
1137 | /* Pop 1, push 1 */ | |
1138 | vstack_ax(stack)->type = REG_DOUBLE; | |
1139 | next_pc += sizeof(struct load_op); | |
1140 | break; | |
1141 | } | |
1142 | ||
1143 | case FILTER_OP_GET_SYMBOL: | |
1144 | { | |
1145 | struct load_op *insn = (struct load_op *) pc; | |
1146 | ||
1147 | dbg_printk("op get symbol\n"); | |
1148 | switch (vstack_ax(stack)->load.type) { | |
1149 | case LOAD_OBJECT: | |
5a15f70c | 1150 | printk(KERN_WARNING "LTTng: filter: Nested fields not implemented yet.\n"); |
3834b99f MD |
1151 | ret = -EINVAL; |
1152 | goto end; | |
1153 | case LOAD_ROOT_CONTEXT: | |
1154 | /* Lookup context field. */ | |
2dfda770 | 1155 | ret = specialize_context_lookup(ctx, bytecode, insn, |
3834b99f MD |
1156 | &vstack_ax(stack)->load); |
1157 | if (ret) | |
1158 | goto end; | |
1159 | break; | |
1160 | case LOAD_ROOT_APP_CONTEXT: | |
1161 | ret = -EINVAL; | |
1162 | goto end; | |
1163 | case LOAD_ROOT_PAYLOAD: | |
1164 | /* Lookup event payload field. */ | |
2dfda770 | 1165 | ret = specialize_payload_lookup(event_desc, |
3834b99f MD |
1166 | bytecode, insn, |
1167 | &vstack_ax(stack)->load); | |
1168 | if (ret) | |
1169 | goto end; | |
1170 | break; | |
1171 | } | |
1172 | next_pc += sizeof(struct load_op) + sizeof(struct get_symbol); | |
1173 | break; | |
1174 | } | |
1175 | ||
1176 | case FILTER_OP_GET_SYMBOL_FIELD: | |
1177 | { | |
1178 | /* Always generated by specialize phase. */ | |
1179 | ret = -EINVAL; | |
1180 | goto end; | |
1181 | } | |
1182 | ||
1183 | case FILTER_OP_GET_INDEX_U16: | |
1184 | { | |
1185 | struct load_op *insn = (struct load_op *) pc; | |
1186 | struct get_index_u16 *index = (struct get_index_u16 *) insn->data; | |
1187 | ||
1188 | dbg_printk("op get index u16\n"); | |
1189 | /* Pop 1, push 1 */ | |
1190 | ret = specialize_get_index(bytecode, insn, index->index, | |
1191 | vstack_ax(stack), sizeof(*index)); | |
1192 | if (ret) | |
1193 | goto end; | |
1194 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16); | |
1195 | break; | |
1196 | } | |
1197 | ||
1198 | case FILTER_OP_GET_INDEX_U64: | |
1199 | { | |
1200 | struct load_op *insn = (struct load_op *) pc; | |
1201 | struct get_index_u64 *index = (struct get_index_u64 *) insn->data; | |
1202 | ||
1203 | dbg_printk("op get index u64\n"); | |
1204 | /* Pop 1, push 1 */ | |
1205 | ret = specialize_get_index(bytecode, insn, index->index, | |
1206 | vstack_ax(stack), sizeof(*index)); | |
1207 | if (ret) | |
1208 | goto end; | |
1209 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64); | |
1210 | break; | |
1211 | } | |
1212 | ||
07dfc1d0 MD |
1213 | } |
1214 | } | |
1215 | end: | |
1216 | return ret; | |
1217 | } |