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bytecode: Add `OBJECT_TYPE_{UN,}SIGNED_ENUM` type
[lttng-modules.git] / src / lttng-bytecode-specialize.c
CommitLineData
9f36eaed
MJ		 1/* SPDX-License-Identifier: MIT
2 *
80c2a69a 3 * lttng-bytecode-specialize.c
07dfc1d0 4 *
80c2a69a 5 * LTTng modules bytecode code specializer.
07dfc1d0 6 *
bbf3aef5 7 * Copyright (C) 2010-2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
07dfc1d0
MD		 8 */
9
3834b99f 10#include <linux/slab.h>
80c2a69a 11#include <lttng/lttng-bytecode.h>
a071f25d 12#include <lttng/align.h>
07dfc1d0 13
3834b99f
MD		 14static 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
80c2a69a 23 if (new_len > INTERPRETER_MAX_DATA_LEN)
3834b99f
MD		 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
45static 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
57static 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:
80c2a69a 69 dbg_printk("Bytecode warning: cannot load root, missing field name.\n");
3834b99f
MD		 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)
80c2a69a 78 insn->op = BYTECODE_OP_LOAD_FIELD_S8;
3834b99f
MD		 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)
80c2a69a 84 insn->op = BYTECODE_OP_LOAD_FIELD_S16;
3834b99f
MD		 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)
80c2a69a 90 insn->op = BYTECODE_OP_LOAD_FIELD_S32;
3834b99f
MD		 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)
80c2a69a 96 insn->op = BYTECODE_OP_LOAD_FIELD_S64;
3834b99f 97 break;
29a574c3
FD		 98 case OBJECT_TYPE_SIGNED_ENUM:
99 dbg_printk("op load field signed enumeration\n");
100 stack_top->type = REG_PTR;
101 break;
3834b99f
MD		 102 case OBJECT_TYPE_U8:
103 dbg_printk("op load field u8\n");
104 stack_top->type = REG_S64;
80c2a69a 105 insn->op = BYTECODE_OP_LOAD_FIELD_U8;
3834b99f
MD		 106 break;
107 case OBJECT_TYPE_U16:
108 dbg_printk("op load field u16\n");
109 stack_top->type = REG_S64;
110 if (!stack_top->load.rev_bo)
80c2a69a 111 insn->op = BYTECODE_OP_LOAD_FIELD_U16;
3834b99f
MD		 112 break;
113 case OBJECT_TYPE_U32:
114 dbg_printk("op load field u32\n");
115 stack_top->type = REG_S64;
116 if (!stack_top->load.rev_bo)
80c2a69a 117 insn->op = BYTECODE_OP_LOAD_FIELD_U32;
3834b99f
MD		 118 break;
119 case OBJECT_TYPE_U64:
120 dbg_printk("op load field u64\n");
121 stack_top->type = REG_S64;
122 if (!stack_top->load.rev_bo)
80c2a69a 123 insn->op = BYTECODE_OP_LOAD_FIELD_U64;
3834b99f 124 break;
29a574c3
FD		 125 case OBJECT_TYPE_UNSIGNED_ENUM:
126 dbg_printk("op load field unsigned enumeration\n");
127 stack_top->type = REG_PTR;
128 break;
3834b99f 129 case OBJECT_TYPE_DOUBLE:
80c2a69a 130 printk(KERN_WARNING "LTTng: bytecode: Double type unsupported\n\n");
3834b99f
MD		 131 ret = -EINVAL;
132 goto end;
133 case OBJECT_TYPE_STRING:
134 dbg_printk("op load field string\n");
135 stack_top->type = REG_STRING;
80c2a69a 136 insn->op = BYTECODE_OP_LOAD_FIELD_STRING;
3834b99f
MD		 137 break;
138 case OBJECT_TYPE_STRING_SEQUENCE:
139 dbg_printk("op load field string sequence\n");
140 stack_top->type = REG_STRING;
80c2a69a 141 insn->op = BYTECODE_OP_LOAD_FIELD_SEQUENCE;
3834b99f
MD		 142 break;
143 case OBJECT_TYPE_DYNAMIC:
144 ret = -EINVAL;
145 goto end;
146 case OBJECT_TYPE_SEQUENCE:
147 case OBJECT_TYPE_ARRAY:
148 case OBJECT_TYPE_STRUCT:
149 case OBJECT_TYPE_VARIANT:
80c2a69a 150 printk(KERN_WARNING "LTTng: bytecode: Sequences, arrays, struct and variant cannot be loaded (nested types).\n");
3834b99f
MD		 151 ret = -EINVAL;
152 goto end;
153 }
154 return 0;
155
156end:
157 return ret;
158}
159
160static int specialize_get_index_object_type(enum object_type *otype,
161 int signedness, uint32_t elem_len)
162{
163 switch (elem_len) {
164 case 8:
165 if (signedness)
166 *otype = OBJECT_TYPE_S8;
167 else
168 *otype = OBJECT_TYPE_U8;
169 break;
170 case 16:
171 if (signedness)
172 *otype = OBJECT_TYPE_S16;
173 else
174 *otype = OBJECT_TYPE_U16;
175 break;
176 case 32:
177 if (signedness)
178 *otype = OBJECT_TYPE_S32;
179 else
180 *otype = OBJECT_TYPE_U32;
181 break;
182 case 64:
183 if (signedness)
184 *otype = OBJECT_TYPE_S64;
185 else
186 *otype = OBJECT_TYPE_U64;
187 break;
188 default:
189 return -EINVAL;
190 }
191 return 0;
192}
193
194static int specialize_get_index(struct bytecode_runtime *runtime,
195 struct load_op *insn, uint64_t index,
196 struct vstack_entry *stack_top,
197 int idx_len)
198{
199 int ret;
80c2a69a 200 struct bytecode_get_index_data gid;
3834b99f
MD		 201 ssize_t data_offset;
202
203 memset(&gid, 0, sizeof(gid));
204 switch (stack_top->load.type) {
205 case LOAD_OBJECT:
206 switch (stack_top->load.object_type) {
207 case OBJECT_TYPE_ARRAY:
208 {
ceabb767 209 const struct lttng_integer_type *integer_type;
3834b99f
MD		 210 const struct lttng_event_field *field;
211 uint32_t elem_len, num_elems;
212 int signedness;
213
214 field = stack_top->load.field;
ceabb767
MD		 215 if (!lttng_is_bytewise_integer(field->type.u.array_nestable.elem_type)) {
216 ret = -EINVAL;
217 goto end;
218 }
219 integer_type = &field->type.u.array_nestable.elem_type->u.integer;
220 num_elems = field->type.u.array_nestable.length;
221 elem_len = integer_type->size;
222 signedness = integer_type->signedness;
3834b99f
MD		 223 if (index >= num_elems) {
224 ret = -EINVAL;
225 goto end;
226 }
227 ret = specialize_get_index_object_type(&stack_top->load.object_type,
228 signedness, elem_len);
229 if (ret)
230 goto end;
231 gid.offset = index * (elem_len / CHAR_BIT);
232 gid.array_len = num_elems * (elem_len / CHAR_BIT);
233 gid.elem.type = stack_top->load.object_type;
234 gid.elem.len = elem_len;
ceabb767 235 if (integer_type->reverse_byte_order)
3834b99f
MD		 236 gid.elem.rev_bo = true;
237 stack_top->load.rev_bo = gid.elem.rev_bo;
238 break;
239 }
240 case OBJECT_TYPE_SEQUENCE:
241 {
ceabb767 242 const struct lttng_integer_type *integer_type;
3834b99f
MD		 243 const struct lttng_event_field *field;
244 uint32_t elem_len;
245 int signedness;
246
247 field = stack_top->load.field;
ceabb767
MD		 248 if (!lttng_is_bytewise_integer(field->type.u.sequence_nestable.elem_type)) {
249 ret = -EINVAL;
250 goto end;
251 }
252 integer_type = &field->type.u.sequence_nestable.elem_type->u.integer;
253 elem_len = integer_type->size;
254 signedness = integer_type->signedness;
3834b99f
MD		 255 ret = specialize_get_index_object_type(&stack_top->load.object_type,
256 signedness, elem_len);
257 if (ret)
258 goto end;
259 gid.offset = index * (elem_len / CHAR_BIT);
260 gid.elem.type = stack_top->load.object_type;
261 gid.elem.len = elem_len;
ceabb767 262 if (integer_type->reverse_byte_order)
3834b99f
MD		 263 gid.elem.rev_bo = true;
264 stack_top->load.rev_bo = gid.elem.rev_bo;
265 break;
266 }
267 case OBJECT_TYPE_STRUCT:
268 /* Only generated by the specialize phase. */
269 case OBJECT_TYPE_VARIANT: /* Fall-through */
270 default:
80c2a69a 271 printk(KERN_WARNING "LTTng: bytecode: Unexpected get index type %d",
3834b99f
MD		 272 (int) stack_top->load.object_type);
273 ret = -EINVAL;
274 goto end;
275 }
276 break;
277 case LOAD_ROOT_CONTEXT:
278 case LOAD_ROOT_APP_CONTEXT:
279 case LOAD_ROOT_PAYLOAD:
80c2a69a 280 printk(KERN_WARNING "LTTng: bytecode: Index lookup for root field not implemented yet.\n");
3834b99f
MD		 281 ret = -EINVAL;
282 goto end;
283 }
284 data_offset = bytecode_push_data(runtime, &gid,
285 __alignof__(gid), sizeof(gid));
286 if (data_offset < 0) {
287 ret = -EINVAL;
288 goto end;
289 }
290 switch (idx_len) {
291 case 2:
292 ((struct get_index_u16 *) insn->data)->index = data_offset;
293 break;
294 case 8:
295 ((struct get_index_u64 *) insn->data)->index = data_offset;
296 break;
297 default:
298 ret = -EINVAL;
299 goto end;
300 }
301
302 return 0;
303
304end:
305 return ret;
306}
307
2dfda770
FD		 308static int specialize_context_lookup_name(struct lttng_ctx *ctx,
309 struct bytecode_runtime *bytecode,
3834b99f
MD		 310 struct load_op *insn)
311{
312 uint16_t offset;
313 const char *name;
314
315 offset = ((struct get_symbol *) insn->data)->offset;
316 name = bytecode->p.bc->bc.data + bytecode->p.bc->bc.reloc_offset + offset;
2dfda770 317 return lttng_get_context_index(ctx, name);
3834b99f
MD		 318}
319
320static int specialize_load_object(const struct lttng_event_field *field,
321 struct vstack_load *load, bool is_context)
322{
323 load->type = LOAD_OBJECT;
1242217a 324
3834b99f
MD		 325 switch (field->type.atype) {
326 case atype_integer:
ceabb767 327 if (field->type.u.integer.signedness)
3834b99f
MD		 328 load->object_type = OBJECT_TYPE_S64;
329 else
330 load->object_type = OBJECT_TYPE_U64;
331 load->rev_bo = false;
332 break;
ceabb767 333 case atype_enum_nestable:
3834b99f
MD		 334 {
335 const struct lttng_integer_type *itype =
ceabb767 336 &field->type.u.enum_nestable.container_type->u.integer;
3834b99f
MD		 337
338 if (itype->signedness)
29a574c3 339 load->object_type = OBJECT_TYPE_SIGNED_ENUM;
3834b99f 340 else
29a574c3 341 load->object_type = OBJECT_TYPE_UNSIGNED_ENUM;
3834b99f
MD		 342 load->rev_bo = false;
343 break;
344 }
ceabb767
MD		 345 case atype_array_nestable:
346 if (!lttng_is_bytewise_integer(field->type.u.array_nestable.elem_type)) {
80c2a69a 347 printk(KERN_WARNING "LTTng: bytecode: Array nesting only supports integer types.\n");
3834b99f
MD		 348 return -EINVAL;
349 }
350 if (is_context) {
351 load->object_type = OBJECT_TYPE_STRING;
352 } else {
ceabb767 353 if (field->type.u.array_nestable.elem_type->u.integer.encoding == lttng_encode_none) {
3834b99f
MD		 354 load->object_type = OBJECT_TYPE_ARRAY;
355 load->field = field;
356 } else {
357 load->object_type = OBJECT_TYPE_STRING_SEQUENCE;
358 }
359 }
360 break;
ceabb767
MD		 361 case atype_sequence_nestable:
362 if (!lttng_is_bytewise_integer(field->type.u.sequence_nestable.elem_type)) {
80c2a69a 363 printk(KERN_WARNING "LTTng: bytecode: Sequence nesting only supports integer types.\n");
3834b99f
MD		 364 return -EINVAL;
365 }
366 if (is_context) {
367 load->object_type = OBJECT_TYPE_STRING;
368 } else {
ceabb767 369 if (field->type.u.sequence_nestable.elem_type->u.integer.encoding == lttng_encode_none) {
3834b99f
MD		 370 load->object_type = OBJECT_TYPE_SEQUENCE;
371 load->field = field;
372 } else {
373 load->object_type = OBJECT_TYPE_STRING_SEQUENCE;
374 }
375 }
376 break;
3834b99f
MD		 377 case atype_string:
378 load->object_type = OBJECT_TYPE_STRING;
379 break;
ceabb767 380 case atype_struct_nestable:
80c2a69a 381 printk(KERN_WARNING "LTTng: bytecode: Structure type cannot be loaded.\n");
3834b99f 382 return -EINVAL;
ceabb767 383 case atype_variant_nestable:
80c2a69a 384 printk(KERN_WARNING "LTTng: bytecode: Variant type cannot be loaded.\n");
ceabb767 385 return -EINVAL;
3834b99f 386 default:
80c2a69a 387 printk(KERN_WARNING "LTTng: bytecode: Unknown type: %d", (int) field->type.atype);
3834b99f
MD		 388 return -EINVAL;
389 }
390 return 0;
391}
392
2dfda770
FD		 393static int specialize_context_lookup(struct lttng_ctx *ctx,
394 struct bytecode_runtime *runtime,
3834b99f
MD		 395 struct load_op *insn,
396 struct vstack_load *load)
397{
398 int idx, ret;
399 struct lttng_ctx_field *ctx_field;
400 struct lttng_event_field *field;
80c2a69a 401 struct bytecode_get_index_data gid;
3834b99f
MD		 402 ssize_t data_offset;
403
2dfda770 404 idx = specialize_context_lookup_name(ctx, runtime, insn);
3834b99f
MD		 405 if (idx < 0) {
406 return -ENOENT;
407 }
408 ctx_field = &lttng_static_ctx->fields[idx];
409 field = &ctx_field->event_field;
410 ret = specialize_load_object(field, load, true);
411 if (ret)
412 return ret;
413 /* Specialize each get_symbol into a get_index. */
80c2a69a 414 insn->op = BYTECODE_OP_GET_INDEX_U16;
3834b99f
MD		 415 memset(&gid, 0, sizeof(gid));
416 gid.ctx_index = idx;
417 gid.elem.type = load->object_type;
60e8b0d6 418 gid.elem.rev_bo = load->rev_bo;
03cb0cdd 419 gid.field = field;
3834b99f
MD		 420 data_offset = bytecode_push_data(runtime, &gid,
421 __alignof__(gid), sizeof(gid));
422 if (data_offset < 0) {
423 return -EINVAL;
424 }
425 ((struct get_index_u16 *) insn->data)->index = data_offset;
426 return 0;
427}
428
2dfda770 429static int specialize_payload_lookup(const struct lttng_event_desc *event_desc,
3834b99f
MD		 430 struct bytecode_runtime *runtime,
431 struct load_op *insn,
432 struct vstack_load *load)
433{
434 const char *name;
435 uint16_t offset;
3834b99f
MD		 436 unsigned int i, nr_fields;
437 bool found = false;
438 uint32_t field_offset = 0;
439 const struct lttng_event_field *field;
440 int ret;
80c2a69a 441 struct bytecode_get_index_data gid;
3834b99f
MD		 442 ssize_t data_offset;
443
2dfda770 444 nr_fields = event_desc->nr_fields;
3834b99f
MD		 445 offset = ((struct get_symbol *) insn->data)->offset;
446 name = runtime->p.bc->bc.data + runtime->p.bc->bc.reloc_offset + offset;
447 for (i = 0; i < nr_fields; i++) {
2dfda770 448 field = &event_desc->fields[i];
ceabb767
MD		 449 if (field->nofilter) {
450 continue;
451 }
3834b99f
MD		 452 if (!strcmp(field->name, name)) {
453 found = true;
454 break;
455 }
456 /* compute field offset on stack */
457 switch (field->type.atype) {
458 case atype_integer:
ceabb767 459 case atype_enum_nestable:
3834b99f
MD		 460 field_offset += sizeof(int64_t);
461 break;
ceabb767
MD		 462 case atype_array_nestable:
463 case atype_sequence_nestable:
3834b99f
MD		 464 field_offset += sizeof(unsigned long);
465 field_offset += sizeof(void *);
466 break;
467 case atype_string:
468 field_offset += sizeof(void *);
469 break;
470 default:
471 ret = -EINVAL;
472 goto end;
473 }
474 }
475 if (!found) {
476 ret = -EINVAL;
477 goto end;
478 }
479
480 ret = specialize_load_object(field, load, false);
481 if (ret)
482 goto end;
483
484 /* Specialize each get_symbol into a get_index. */
80c2a69a 485 insn->op = BYTECODE_OP_GET_INDEX_U16;
3834b99f
MD		 486 memset(&gid, 0, sizeof(gid));
487 gid.offset = field_offset;
488 gid.elem.type = load->object_type;
60e8b0d6 489 gid.elem.rev_bo = load->rev_bo;
03cb0cdd 490 gid.field = field;
3834b99f
MD		 491 data_offset = bytecode_push_data(runtime, &gid,
492 __alignof__(gid), sizeof(gid));
493 if (data_offset < 0) {
494 ret = -EINVAL;
495 goto end;
496 }
497 ((struct get_index_u16 *) insn->data)->index = data_offset;
498 ret = 0;
499end:
500 return ret;
501}
502
80c2a69a 503int lttng_bytecode_specialize(const struct lttng_event_desc *event_desc,
3834b99f 504 struct bytecode_runtime *bytecode)
07dfc1d0
MD		 505{
506 void *pc, *next_pc, *start_pc;
507 int ret = -EINVAL;
508 struct vstack _stack;
509 struct vstack *stack = &_stack;
2dfda770 510 struct lttng_ctx *ctx = bytecode->p.ctx;
07dfc1d0
MD		 511
512 vstack_init(stack);
513
3834b99f 514 start_pc = &bytecode->code[0];
07dfc1d0
MD		 515 for (pc = next_pc = start_pc; pc - start_pc < bytecode->len;
516 pc = next_pc) {
80c2a69a
FD		 517 switch (*(bytecode_opcode_t *) pc) {
518 case BYTECODE_OP_UNKNOWN:
07dfc1d0 519 default:
80c2a69a
FD		 520 printk(KERN_WARNING "LTTng: bytecode: unknown bytecode op %u\n",
521 (unsigned int) *(bytecode_opcode_t *) pc);
07dfc1d0
MD		 522 ret = -EINVAL;
523 goto end;
524
80c2a69a
FD		 525 case BYTECODE_OP_RETURN:
526 case BYTECODE_OP_RETURN_S64:
07dfc1d0
MD		 527 ret = 0;
528 goto end;
529
530 /* binary */
80c2a69a
FD		 531 case BYTECODE_OP_MUL:
532 case BYTECODE_OP_DIV:
533 case BYTECODE_OP_MOD:
534 case BYTECODE_OP_PLUS:
535 case BYTECODE_OP_MINUS:
536 printk(KERN_WARNING "LTTng: bytecode: unknown bytecode op %u\n",
537 (unsigned int) *(bytecode_opcode_t *) pc);
07dfc1d0
MD		 538 ret = -EINVAL;
539 goto end;
540
80c2a69a 541 case BYTECODE_OP_EQ:
07dfc1d0
MD		 542 {
543 struct binary_op *insn = (struct binary_op *) pc;
544
545 switch(vstack_ax(stack)->type) {
546 default:
80c2a69a 547 printk(KERN_WARNING "LTTng: bytecode: unknown register type\n");
07dfc1d0
MD		 548 ret = -EINVAL;
549 goto end;
550
551 case REG_STRING:
02aca193 552 if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING)
80c2a69a 553 insn->op = BYTECODE_OP_EQ_STAR_GLOB_STRING;
02aca193 554 else
80c2a69a 555 insn->op = BYTECODE_OP_EQ_STRING;
02aca193
PP		 556 break;
557 case REG_STAR_GLOB_STRING:
80c2a69a 558 insn->op = BYTECODE_OP_EQ_STAR_GLOB_STRING;
07dfc1d0
MD		 559 break;
560 case REG_S64:
561 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 562 insn->op = BYTECODE_OP_EQ_S64;
07dfc1d0 563 else
80c2a69a 564 insn->op = BYTECODE_OP_EQ_DOUBLE_S64;
07dfc1d0
MD		 565 break;
566 case REG_DOUBLE:
567 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 568 insn->op = BYTECODE_OP_EQ_S64_DOUBLE;
07dfc1d0 569 else
80c2a69a 570 insn->op = BYTECODE_OP_EQ_DOUBLE;
07dfc1d0
MD		 571 break;
572 }
573 /* Pop 2, push 1 */
574 if (vstack_pop(stack)) {
575 ret = -EINVAL;
576 goto end;
577 }
578 vstack_ax(stack)->type = REG_S64;
579 next_pc += sizeof(struct binary_op);
580 break;
581 }
582
80c2a69a 583 case BYTECODE_OP_NE:
07dfc1d0
MD		 584 {
585 struct binary_op *insn = (struct binary_op *) pc;
586
587 switch(vstack_ax(stack)->type) {
588 default:
80c2a69a 589 printk(KERN_WARNING "LTTng: bytecode: unknown register type\n");
07dfc1d0
MD		 590 ret = -EINVAL;
591 goto end;
592
593 case REG_STRING:
02aca193 594 if (vstack_bx(stack)->type == REG_STAR_GLOB_STRING)
80c2a69a 595 insn->op = BYTECODE_OP_NE_STAR_GLOB_STRING;
02aca193 596 else
80c2a69a 597 insn->op = BYTECODE_OP_NE_STRING;
02aca193
PP		 598 break;
599 case REG_STAR_GLOB_STRING:
80c2a69a 600 insn->op = BYTECODE_OP_NE_STAR_GLOB_STRING;
07dfc1d0
MD		 601 break;
602 case REG_S64:
603 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 604 insn->op = BYTECODE_OP_NE_S64;
07dfc1d0 605 else
80c2a69a 606 insn->op = BYTECODE_OP_NE_DOUBLE_S64;
07dfc1d0
MD		 607 break;
608 case REG_DOUBLE:
609 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 610 insn->op = BYTECODE_OP_NE_S64_DOUBLE;
07dfc1d0 611 else
80c2a69a 612 insn->op = BYTECODE_OP_NE_DOUBLE;
07dfc1d0
MD		 613 break;
614 }
615 /* Pop 2, push 1 */
616 if (vstack_pop(stack)) {
617 ret = -EINVAL;
618 goto end;
619 }
620 vstack_ax(stack)->type = REG_S64;
621 next_pc += sizeof(struct binary_op);
622 break;
623 }
624
80c2a69a 625 case BYTECODE_OP_GT:
07dfc1d0
MD		 626 {
627 struct binary_op *insn = (struct binary_op *) pc;
628
629 switch(vstack_ax(stack)->type) {
630 default:
80c2a69a 631 printk(KERN_WARNING "LTTng: bytecode: unknown register type\n");
07dfc1d0
MD		 632 ret = -EINVAL;
633 goto end;
634
02aca193 635 case REG_STAR_GLOB_STRING:
80c2a69a 636 printk(KERN_WARNING "LTTng: bytecode: invalid register type for '>' binary operator\n");
02aca193
PP		 637 ret = -EINVAL;
638 goto end;
07dfc1d0 639 case REG_STRING:
80c2a69a 640 insn->op = BYTECODE_OP_GT_STRING;
07dfc1d0
MD		 641 break;
642 case REG_S64:
643 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 644 insn->op = BYTECODE_OP_GT_S64;
07dfc1d0 645 else
80c2a69a 646 insn->op = BYTECODE_OP_GT_DOUBLE_S64;
07dfc1d0
MD		 647 break;
648 case REG_DOUBLE:
649 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 650 insn->op = BYTECODE_OP_GT_S64_DOUBLE;
07dfc1d0 651 else
80c2a69a 652 insn->op = BYTECODE_OP_GT_DOUBLE;
07dfc1d0
MD		 653 break;
654 }
655 /* Pop 2, push 1 */
656 if (vstack_pop(stack)) {
657 ret = -EINVAL;
658 goto end;
659 }
660 vstack_ax(stack)->type = REG_S64;
661 next_pc += sizeof(struct binary_op);
662 break;
663 }
664
80c2a69a 665 case BYTECODE_OP_LT:
07dfc1d0
MD		 666 {
667 struct binary_op *insn = (struct binary_op *) pc;
668
669 switch(vstack_ax(stack)->type) {
670 default:
80c2a69a 671 printk(KERN_WARNING "LTTng: bytecode: unknown register type\n");
07dfc1d0
MD		 672 ret = -EINVAL;
673 goto end;
674
02aca193 675 case REG_STAR_GLOB_STRING:
80c2a69a 676 printk(KERN_WARNING "LTTng: bytecode: invalid register type for '<' binary operator\n");
02aca193
PP		 677 ret = -EINVAL;
678 goto end;
07dfc1d0 679 case REG_STRING:
80c2a69a 680 insn->op = BYTECODE_OP_LT_STRING;
07dfc1d0
MD		 681 break;
682 case REG_S64:
683 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 684 insn->op = BYTECODE_OP_LT_S64;
07dfc1d0 685 else
80c2a69a 686 insn->op = BYTECODE_OP_LT_DOUBLE_S64;
07dfc1d0
MD		 687 break;
688 case REG_DOUBLE:
689 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 690 insn->op = BYTECODE_OP_LT_S64_DOUBLE;
07dfc1d0 691 else
80c2a69a 692 insn->op = BYTECODE_OP_LT_DOUBLE;
07dfc1d0
MD		 693 break;
694 }
695 /* Pop 2, push 1 */
696 if (vstack_pop(stack)) {
697 ret = -EINVAL;
698 goto end;
699 }
700 vstack_ax(stack)->type = REG_S64;
701 next_pc += sizeof(struct binary_op);
702 break;
703 }
704
80c2a69a 705 case BYTECODE_OP_GE:
07dfc1d0
MD		 706 {
707 struct binary_op *insn = (struct binary_op *) pc;
708
709 switch(vstack_ax(stack)->type) {
710 default:
80c2a69a 711 printk(KERN_WARNING "LTTng: bytecode: unknown register type\n");
07dfc1d0
MD		 712 ret = -EINVAL;
713 goto end;
714
02aca193 715 case REG_STAR_GLOB_STRING:
80c2a69a 716 printk(KERN_WARNING "LTTng: bytecode: invalid register type for '>=' binary operator\n");
02aca193
PP		 717 ret = -EINVAL;
718 goto end;
07dfc1d0 719 case REG_STRING:
80c2a69a 720 insn->op = BYTECODE_OP_GE_STRING;
07dfc1d0
MD		 721 break;
722 case REG_S64:
723 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 724 insn->op = BYTECODE_OP_GE_S64;
07dfc1d0 725 else
80c2a69a 726 insn->op = BYTECODE_OP_GE_DOUBLE_S64;
07dfc1d0
MD		 727 break;
728 case REG_DOUBLE:
729 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 730 insn->op = BYTECODE_OP_GE_S64_DOUBLE;
07dfc1d0 731 else
80c2a69a 732 insn->op = BYTECODE_OP_GE_DOUBLE;
07dfc1d0
MD		 733 break;
734 }
735 /* Pop 2, push 1 */
736 if (vstack_pop(stack)) {
737 ret = -EINVAL;
738 goto end;
739 }
740 vstack_ax(stack)->type = REG_S64;
741 next_pc += sizeof(struct binary_op);
742 break;
743 }
80c2a69a 744 case BYTECODE_OP_LE:
07dfc1d0
MD		 745 {
746 struct binary_op *insn = (struct binary_op *) pc;
747
748 switch(vstack_ax(stack)->type) {
749 default:
80c2a69a 750 printk(KERN_WARNING "LTTng: bytecode: unknown register type\n");
07dfc1d0
MD		 751 ret = -EINVAL;
752 goto end;
753
02aca193 754 case REG_STAR_GLOB_STRING:
80c2a69a 755 printk(KERN_WARNING "LTTng: bytecode: invalid register type for '<=' binary operator\n");
02aca193
PP		 756 ret = -EINVAL;
757 goto end;
07dfc1d0 758 case REG_STRING:
80c2a69a 759 insn->op = BYTECODE_OP_LE_STRING;
07dfc1d0
MD		 760 break;
761 case REG_S64:
762 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 763 insn->op = BYTECODE_OP_LE_S64;
07dfc1d0 764 else
80c2a69a 765 insn->op = BYTECODE_OP_LE_DOUBLE_S64;
07dfc1d0
MD		 766 break;
767 case REG_DOUBLE:
768 if (vstack_bx(stack)->type == REG_S64)
80c2a69a 769 insn->op = BYTECODE_OP_LE_S64_DOUBLE;
07dfc1d0 770 else
80c2a69a 771 insn->op = BYTECODE_OP_LE_DOUBLE;
07dfc1d0
MD		 772 break;
773 }
774 vstack_ax(stack)->type = REG_S64;
775 next_pc += sizeof(struct binary_op);
776 break;
777 }
778
80c2a69a
FD		 779 case BYTECODE_OP_EQ_STRING:
780 case BYTECODE_OP_NE_STRING:
781 case BYTECODE_OP_GT_STRING:
782 case BYTECODE_OP_LT_STRING:
783 case BYTECODE_OP_GE_STRING:
784 case BYTECODE_OP_LE_STRING:
785 case BYTECODE_OP_EQ_STAR_GLOB_STRING:
786 case BYTECODE_OP_NE_STAR_GLOB_STRING:
787 case BYTECODE_OP_EQ_S64:
788 case BYTECODE_OP_NE_S64:
789 case BYTECODE_OP_GT_S64:
790 case BYTECODE_OP_LT_S64:
791 case BYTECODE_OP_GE_S64:
792 case BYTECODE_OP_LE_S64:
793 case BYTECODE_OP_EQ_DOUBLE:
794 case BYTECODE_OP_NE_DOUBLE:
795 case BYTECODE_OP_GT_DOUBLE:
796 case BYTECODE_OP_LT_DOUBLE:
797 case BYTECODE_OP_GE_DOUBLE:
798 case BYTECODE_OP_LE_DOUBLE:
799 case BYTECODE_OP_EQ_DOUBLE_S64:
800 case BYTECODE_OP_NE_DOUBLE_S64:
801 case BYTECODE_OP_GT_DOUBLE_S64:
802 case BYTECODE_OP_LT_DOUBLE_S64:
803 case BYTECODE_OP_GE_DOUBLE_S64:
804 case BYTECODE_OP_LE_DOUBLE_S64:
805 case BYTECODE_OP_EQ_S64_DOUBLE:
806 case BYTECODE_OP_NE_S64_DOUBLE:
807 case BYTECODE_OP_GT_S64_DOUBLE:
808 case BYTECODE_OP_LT_S64_DOUBLE:
809 case BYTECODE_OP_GE_S64_DOUBLE:
810 case BYTECODE_OP_LE_S64_DOUBLE:
811 case BYTECODE_OP_BIT_RSHIFT:
812 case BYTECODE_OP_BIT_LSHIFT:
813 case BYTECODE_OP_BIT_AND:
814 case BYTECODE_OP_BIT_OR:
815 case BYTECODE_OP_BIT_XOR:
07dfc1d0
MD		 816 {
817 /* Pop 2, push 1 */
818 if (vstack_pop(stack)) {
819 ret = -EINVAL;
820 goto end;
821 }
822 vstack_ax(stack)->type = REG_S64;
823 next_pc += sizeof(struct binary_op);
824 break;
825 }
826
827 /* unary */
80c2a69a 828 case BYTECODE_OP_UNARY_PLUS:
07dfc1d0
MD		 829 {
830 struct unary_op *insn = (struct unary_op *) pc;
831
832 switch(vstack_ax(stack)->type) {
833 default:
80c2a69a 834 printk(KERN_WARNING "LTTng: bytecode: unknown register type\n");
07dfc1d0
MD		 835 ret = -EINVAL;
836 goto end;
837
838 case REG_S64:
80c2a69a 839 insn->op = BYTECODE_OP_UNARY_PLUS_S64;
07dfc1d0
MD		 840 break;
841 case REG_DOUBLE:
80c2a69a 842 insn->op = BYTECODE_OP_UNARY_PLUS_DOUBLE;
07dfc1d0
MD		 843 break;
844 }
845 /* Pop 1, push 1 */
846 next_pc += sizeof(struct unary_op);
847 break;
848 }
849
80c2a69a 850 case BYTECODE_OP_UNARY_MINUS:
07dfc1d0
MD		 851 {
852 struct unary_op *insn = (struct unary_op *) pc;
853
854 switch(vstack_ax(stack)->type) {
855 default:
80c2a69a 856 printk(KERN_WARNING "LTTng: bytecode: unknown register type\n");
07dfc1d0
MD		 857 ret = -EINVAL;
858 goto end;
859
860 case REG_S64:
80c2a69a 861 insn->op = BYTECODE_OP_UNARY_MINUS_S64;
07dfc1d0
MD		 862 break;
863 case REG_DOUBLE:
80c2a69a 864 insn->op = BYTECODE_OP_UNARY_MINUS_DOUBLE;
07dfc1d0
MD		 865 break;
866 }
867 /* Pop 1, push 1 */
868 next_pc += sizeof(struct unary_op);
869 break;
870 }
871
80c2a69a 872 case BYTECODE_OP_UNARY_NOT:
07dfc1d0
MD		 873 {
874 struct unary_op *insn = (struct unary_op *) pc;
875
876 switch(vstack_ax(stack)->type) {
877 default:
80c2a69a 878 printk(KERN_WARNING "LTTng: bytecode: unknown register type\n");
07dfc1d0
MD		 879 ret = -EINVAL;
880 goto end;
881
882 case REG_S64:
80c2a69a 883 insn->op = BYTECODE_OP_UNARY_NOT_S64;
07dfc1d0
MD		 884 break;
885 case REG_DOUBLE:
80c2a69a 886 insn->op = BYTECODE_OP_UNARY_NOT_DOUBLE;
07dfc1d0
MD		 887 break;
888 }
889 /* Pop 1, push 1 */
890 next_pc += sizeof(struct unary_op);
891 break;
892 }
893
80c2a69a 894 case BYTECODE_OP_UNARY_BIT_NOT:
e16c054b
MD		 895 {
896 /* Pop 1, push 1 */
897 next_pc += sizeof(struct unary_op);
898 break;
899 }
900
80c2a69a
FD		 901 case BYTECODE_OP_UNARY_PLUS_S64:
902 case BYTECODE_OP_UNARY_MINUS_S64:
903 case BYTECODE_OP_UNARY_NOT_S64:
904 case BYTECODE_OP_UNARY_PLUS_DOUBLE:
905 case BYTECODE_OP_UNARY_MINUS_DOUBLE:
906 case BYTECODE_OP_UNARY_NOT_DOUBLE:
07dfc1d0
MD		 907 {
908 /* Pop 1, push 1 */
909 next_pc += sizeof(struct unary_op);
910 break;
911 }
912
913 /* logical */
80c2a69a
FD		 914 case BYTECODE_OP_AND:
915 case BYTECODE_OP_OR:
07dfc1d0
MD		 916 {
917 /* Continue to next instruction */
918 /* Pop 1 when jump not taken */
919 if (vstack_pop(stack)) {
920 ret = -EINVAL;
921 goto end;
922 }
923 next_pc += sizeof(struct logical_op);
924 break;
925 }
926
927 /* load field ref */
80c2a69a 928 case BYTECODE_OP_LOAD_FIELD_REF:
07dfc1d0 929 {
80c2a69a 930 printk(KERN_WARNING "LTTng: bytecode: Unknown field ref type\n");
07dfc1d0
MD		 931 ret = -EINVAL;
932 goto end;
933 }
934 /* get context ref */
80c2a69a 935 case BYTECODE_OP_GET_CONTEXT_REF:
07dfc1d0 936 {
80c2a69a 937 printk(KERN_WARNING "LTTng: bytecode: Unknown get context ref type\n");
07dfc1d0
MD		 938 ret = -EINVAL;
939 goto end;
940 }
80c2a69a
FD		 941 case BYTECODE_OP_LOAD_FIELD_REF_STRING:
942 case BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE:
943 case BYTECODE_OP_GET_CONTEXT_REF_STRING:
944 case BYTECODE_OP_LOAD_FIELD_REF_USER_STRING:
945 case BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE:
07dfc1d0
MD		 946 {
947 if (vstack_push(stack)) {
948 ret = -EINVAL;
949 goto end;
950 }
951 vstack_ax(stack)->type = REG_STRING;
952 next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
953 break;
954 }
80c2a69a
FD		 955 case BYTECODE_OP_LOAD_FIELD_REF_S64:
956 case BYTECODE_OP_GET_CONTEXT_REF_S64:
07dfc1d0
MD		 957 {
958 if (vstack_push(stack)) {
959 ret = -EINVAL;
960 goto end;
961 }
962 vstack_ax(stack)->type = REG_S64;
963 next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
964 break;
965 }
80c2a69a
FD		 966 case BYTECODE_OP_LOAD_FIELD_REF_DOUBLE:
967 case BYTECODE_OP_GET_CONTEXT_REF_DOUBLE:
07dfc1d0
MD		 968 {
969 if (vstack_push(stack)) {
970 ret = -EINVAL;
971 goto end;
972 }
973 vstack_ax(stack)->type = REG_DOUBLE;
974 next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
975 break;
976 }
977
978 /* load from immediate operand */
80c2a69a 979 case BYTECODE_OP_LOAD_STRING:
07dfc1d0
MD		 980 {
981 struct load_op *insn = (struct load_op *) pc;
982
983 if (vstack_push(stack)) {
984 ret = -EINVAL;
985 goto end;
986 }
987 vstack_ax(stack)->type = REG_STRING;
988 next_pc += sizeof(struct load_op) + strlen(insn->data) + 1;
989 break;
990 }
991
80c2a69a 992 case BYTECODE_OP_LOAD_STAR_GLOB_STRING:
02aca193
PP		 993 {
994 struct load_op *insn = (struct load_op *) pc;
995
996 if (vstack_push(stack)) {
997 ret = -EINVAL;
998 goto end;
999 }
1000 vstack_ax(stack)->type = REG_STAR_GLOB_STRING;
1001 next_pc += sizeof(struct load_op) + strlen(insn->data) + 1;
1002 break;
1003 }
1004
80c2a69a 1005 case BYTECODE_OP_LOAD_S64:
07dfc1d0
MD		 1006 {
1007 if (vstack_push(stack)) {
1008 ret = -EINVAL;
1009 goto end;
1010 }
1011 vstack_ax(stack)->type = REG_S64;
1012 next_pc += sizeof(struct load_op)
1013 + sizeof(struct literal_numeric);
1014 break;
1015 }
1016
80c2a69a 1017 case BYTECODE_OP_LOAD_DOUBLE:
07dfc1d0
MD		 1018 {
1019 if (vstack_push(stack)) {
1020 ret = -EINVAL;
1021 goto end;
1022 }
1023 vstack_ax(stack)->type = REG_DOUBLE;
1024 next_pc += sizeof(struct load_op)
1025 + sizeof(struct literal_double);
1026 break;
1027 }
1028
1029 /* cast */
80c2a69a 1030 case BYTECODE_OP_CAST_TO_S64:
07dfc1d0
MD		 1031 {
1032 struct cast_op *insn = (struct cast_op *) pc;
1033
1034 switch (vstack_ax(stack)->type) {
1035 default:
80c2a69a 1036 printk(KERN_WARNING "LTTng: bytecode: unknown register type\n");
07dfc1d0
MD		 1037 ret = -EINVAL;
1038 goto end;
1039
1040 case REG_STRING:
02aca193 1041 case REG_STAR_GLOB_STRING:
80c2a69a 1042 printk(KERN_WARNING "LTTng: bytecode: Cast op can only be applied to numeric or floating point registers\n");
07dfc1d0
MD		 1043 ret = -EINVAL;
1044 goto end;
1045 case REG_S64:
80c2a69a 1046 insn->op = BYTECODE_OP_CAST_NOP;
07dfc1d0
MD		 1047 break;
1048 case REG_DOUBLE:
80c2a69a 1049 insn->op = BYTECODE_OP_CAST_DOUBLE_TO_S64;
07dfc1d0
MD		 1050 break;
1051 }
1052 /* Pop 1, push 1 */
1053 vstack_ax(stack)->type = REG_S64;
1054 next_pc += sizeof(struct cast_op);
1055 break;
1056 }
80c2a69a 1057 case BYTECODE_OP_CAST_DOUBLE_TO_S64:
07dfc1d0
MD		 1058 {
1059 /* Pop 1, push 1 */
1060 vstack_ax(stack)->type = REG_S64;
1061 next_pc += sizeof(struct cast_op);
1062 break;
1063 }
80c2a69a 1064 case BYTECODE_OP_CAST_NOP:
07dfc1d0
MD		 1065 {
1066 next_pc += sizeof(struct cast_op);
1067 break;
1068 }
1069
3834b99f
MD		 1070 /*
1071 * Instructions for recursive traversal through composed types.
1072 */
80c2a69a 1073 case BYTECODE_OP_GET_CONTEXT_ROOT:
3834b99f
MD		 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_CONTEXT;
1081 next_pc += sizeof(struct load_op);
1082 break;
1083 }
80c2a69a 1084 case BYTECODE_OP_GET_APP_CONTEXT_ROOT:
3834b99f
MD		 1085 {
1086 if (vstack_push(stack)) {
1087 ret = -EINVAL;
1088 goto end;
1089 }
1090 vstack_ax(stack)->type = REG_PTR;
1091 vstack_ax(stack)->load.type = LOAD_ROOT_APP_CONTEXT;
1092 next_pc += sizeof(struct load_op);
1093 break;
1094 }
80c2a69a 1095 case BYTECODE_OP_GET_PAYLOAD_ROOT:
3834b99f
MD		 1096 {
1097 if (vstack_push(stack)) {
1098 ret = -EINVAL;
1099 goto end;
1100 }
1101 vstack_ax(stack)->type = REG_PTR;
1102 vstack_ax(stack)->load.type = LOAD_ROOT_PAYLOAD;
1103 next_pc += sizeof(struct load_op);
1104 break;
1105 }
1106
80c2a69a 1107 case BYTECODE_OP_LOAD_FIELD:
3834b99f
MD		 1108 {
1109 struct load_op *insn = (struct load_op *) pc;
1110
1111 WARN_ON_ONCE(vstack_ax(stack)->type != REG_PTR);
1112 /* Pop 1, push 1 */
1113 ret = specialize_load_field(vstack_ax(stack), insn);
1114 if (ret)
1115 goto end;
1116
1117 next_pc += sizeof(struct load_op);
1118 break;
1119 }
1120
80c2a69a
FD		 1121 case BYTECODE_OP_LOAD_FIELD_S8:
1122 case BYTECODE_OP_LOAD_FIELD_S16:
1123 case BYTECODE_OP_LOAD_FIELD_S32:
1124 case BYTECODE_OP_LOAD_FIELD_S64:
1125 case BYTECODE_OP_LOAD_FIELD_U8:
1126 case BYTECODE_OP_LOAD_FIELD_U16:
1127 case BYTECODE_OP_LOAD_FIELD_U32:
1128 case BYTECODE_OP_LOAD_FIELD_U64:
3834b99f
MD		 1129 {
1130 /* Pop 1, push 1 */
1131 vstack_ax(stack)->type = REG_S64;
1132 next_pc += sizeof(struct load_op);
1133 break;
1134 }
1135
80c2a69a
FD		 1136 case BYTECODE_OP_LOAD_FIELD_STRING:
1137 case BYTECODE_OP_LOAD_FIELD_SEQUENCE:
3834b99f
MD		 1138 {
1139 /* Pop 1, push 1 */
1140 vstack_ax(stack)->type = REG_STRING;
1141 next_pc += sizeof(struct load_op);
1142 break;
1143 }
1144
80c2a69a 1145 case BYTECODE_OP_LOAD_FIELD_DOUBLE:
3834b99f
MD		 1146 {
1147 /* Pop 1, push 1 */
1148 vstack_ax(stack)->type = REG_DOUBLE;
1149 next_pc += sizeof(struct load_op);
1150 break;
1151 }
1152
80c2a69a 1153 case BYTECODE_OP_GET_SYMBOL:
3834b99f
MD		 1154 {
1155 struct load_op *insn = (struct load_op *) pc;
1156
1157 dbg_printk("op get symbol\n");
1158 switch (vstack_ax(stack)->load.type) {
1159 case LOAD_OBJECT:
80c2a69a 1160 printk(KERN_WARNING "LTTng: bytecode: Nested fields not implemented yet.\n");
3834b99f
MD		 1161 ret = -EINVAL;
1162 goto end;
1163 case LOAD_ROOT_CONTEXT:
1164 /* Lookup context field. */
2dfda770 1165 ret = specialize_context_lookup(ctx, bytecode, insn,
3834b99f
MD		 1166 &vstack_ax(stack)->load);
1167 if (ret)
1168 goto end;
1169 break;
1170 case LOAD_ROOT_APP_CONTEXT:
1171 ret = -EINVAL;
1172 goto end;
1173 case LOAD_ROOT_PAYLOAD:
1174 /* Lookup event payload field. */
2dfda770 1175 ret = specialize_payload_lookup(event_desc,
3834b99f
MD		 1176 bytecode, insn,
1177 &vstack_ax(stack)->load);
1178 if (ret)
1179 goto end;
1180 break;
1181 }
1182 next_pc += sizeof(struct load_op) + sizeof(struct get_symbol);
1183 break;
1184 }
1185
80c2a69a 1186 case BYTECODE_OP_GET_SYMBOL_FIELD:
3834b99f
MD		 1187 {
1188 /* Always generated by specialize phase. */
1189 ret = -EINVAL;
1190 goto end;
1191 }
1192
80c2a69a 1193 case BYTECODE_OP_GET_INDEX_U16:
3834b99f
MD		 1194 {
1195 struct load_op *insn = (struct load_op *) pc;
1196 struct get_index_u16 *index = (struct get_index_u16 *) insn->data;
1197
1198 dbg_printk("op get index u16\n");
1199 /* Pop 1, push 1 */
1200 ret = specialize_get_index(bytecode, insn, index->index,
1201 vstack_ax(stack), sizeof(*index));
1202 if (ret)
1203 goto end;
1204 next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16);
1205 break;
1206 }
1207
80c2a69a 1208 case BYTECODE_OP_GET_INDEX_U64:
3834b99f
MD		 1209 {
1210 struct load_op *insn = (struct load_op *) pc;
1211 struct get_index_u64 *index = (struct get_index_u64 *) insn->data;
1212
1213 dbg_printk("op get index u64\n");
1214 /* Pop 1, push 1 */
1215 ret = specialize_get_index(bytecode, insn, index->index,
1216 vstack_ax(stack), sizeof(*index));
1217 if (ret)
1218 goto end;
1219 next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64);
1220 break;
1221 }
1222
07dfc1d0
MD		 1223 }
1224 }
1225end:
1226 return ret;
1227}
LTTng 2.0/0.x modules
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