Commit | Line | Data |
---|---|---|
9f36eaed MJ |
1 | /* SPDX-License-Identifier: MIT |
2 | * | |
80c2a69a | 3 | * lttng-bytecode-interpreter.c |
07dfc1d0 | 4 | * |
80c2a69a | 5 | * LTTng modules bytecode interpreter. |
07dfc1d0 | 6 | * |
bbf3aef5 | 7 | * Copyright (C) 2010-2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
07dfc1d0 MD |
8 | */ |
9 | ||
80bb2600 | 10 | #include <wrapper/uaccess.h> |
d9053936 | 11 | #include <wrapper/objtool.h> |
cbc19040 | 12 | #include <wrapper/types.h> |
3834b99f | 13 | #include <linux/swab.h> |
f127e61e | 14 | |
80c2a69a | 15 | #include <lttng/lttng-bytecode.h> |
2df37e95 | 16 | #include <lttng/string-utils.h> |
07dfc1d0 | 17 | |
f127e61e MD |
18 | /* |
19 | * get_char should be called with page fault handler disabled if it is expected | |
20 | * to handle user-space read. | |
21 | */ | |
22 | static | |
23 | char get_char(struct estack_entry *reg, size_t offset) | |
24 | { | |
25 | if (unlikely(offset >= reg->u.s.seq_len)) | |
26 | return '\0'; | |
27 | if (reg->u.s.user) { | |
28 | char c; | |
29 | ||
30 | /* Handle invalid access as end of string. */ | |
80bb2600 | 31 | if (unlikely(!lttng_access_ok(VERIFY_READ, |
f127e61e MD |
32 | reg->u.s.user_str + offset, |
33 | sizeof(c)))) | |
34 | return '\0'; | |
35 | /* Handle fault (nonzero return value) as end of string. */ | |
36 | if (unlikely(__copy_from_user_inatomic(&c, | |
37 | reg->u.s.user_str + offset, | |
38 | sizeof(c)))) | |
39 | return '\0'; | |
40 | return c; | |
41 | } else { | |
42 | return reg->u.s.str[offset]; | |
43 | } | |
44 | } | |
45 | ||
07dfc1d0 MD |
46 | /* |
47 | * -1: wildcard found. | |
48 | * -2: unknown escape char. | |
49 | * 0: normal char. | |
50 | */ | |
07dfc1d0 | 51 | static |
f127e61e | 52 | int parse_char(struct estack_entry *reg, char *c, size_t *offset) |
07dfc1d0 | 53 | { |
f127e61e | 54 | switch (*c) { |
07dfc1d0 | 55 | case '\\': |
f127e61e MD |
56 | (*offset)++; |
57 | *c = get_char(reg, *offset); | |
58 | switch (*c) { | |
07dfc1d0 MD |
59 | case '\\': |
60 | case '*': | |
61 | return 0; | |
62 | default: | |
63 | return -2; | |
64 | } | |
65 | case '*': | |
66 | return -1; | |
67 | default: | |
68 | return 0; | |
69 | } | |
70 | } | |
71 | ||
02aca193 PP |
72 | static |
73 | char get_char_at_cb(size_t at, void *data) | |
74 | { | |
75 | return get_char(data, at); | |
76 | } | |
77 | ||
78 | static | |
79 | int stack_star_glob_match(struct estack *stack, int top, const char *cmp_type) | |
80 | { | |
81 | bool has_user = false; | |
02aca193 PP |
82 | int result; |
83 | struct estack_entry *pattern_reg; | |
84 | struct estack_entry *candidate_reg; | |
85 | ||
6f192a16 | 86 | /* Disable the page fault handler when reading from userspace. */ |
02aca193 PP |
87 | if (estack_bx(stack, top)->u.s.user |
88 | || estack_ax(stack, top)->u.s.user) { | |
89 | has_user = true; | |
02aca193 PP |
90 | pagefault_disable(); |
91 | } | |
92 | ||
93 | /* Find out which side is the pattern vs. the candidate. */ | |
94 | if (estack_ax(stack, top)->u.s.literal_type == ESTACK_STRING_LITERAL_TYPE_STAR_GLOB) { | |
95 | pattern_reg = estack_ax(stack, top); | |
96 | candidate_reg = estack_bx(stack, top); | |
97 | } else { | |
98 | pattern_reg = estack_bx(stack, top); | |
99 | candidate_reg = estack_ax(stack, top); | |
100 | } | |
101 | ||
102 | /* Perform the match operation. */ | |
103 | result = !strutils_star_glob_match_char_cb(get_char_at_cb, | |
104 | pattern_reg, get_char_at_cb, candidate_reg); | |
6f192a16 | 105 | if (has_user) |
02aca193 | 106 | pagefault_enable(); |
02aca193 PP |
107 | |
108 | return result; | |
109 | } | |
110 | ||
07dfc1d0 MD |
111 | static |
112 | int stack_strcmp(struct estack *stack, int top, const char *cmp_type) | |
113 | { | |
f127e61e MD |
114 | size_t offset_bx = 0, offset_ax = 0; |
115 | int diff, has_user = 0; | |
f127e61e MD |
116 | |
117 | if (estack_bx(stack, top)->u.s.user | |
118 | || estack_ax(stack, top)->u.s.user) { | |
119 | has_user = 1; | |
f127e61e MD |
120 | pagefault_disable(); |
121 | } | |
07dfc1d0 MD |
122 | |
123 | for (;;) { | |
f127e61e | 124 | int ret; |
07dfc1d0 | 125 | int escaped_r0 = 0; |
f127e61e | 126 | char char_bx, char_ax; |
07dfc1d0 | 127 | |
f127e61e MD |
128 | char_bx = get_char(estack_bx(stack, top), offset_bx); |
129 | char_ax = get_char(estack_ax(stack, top), offset_ax); | |
130 | ||
131 | if (unlikely(char_bx == '\0')) { | |
132 | if (char_ax == '\0') { | |
133 | diff = 0; | |
134 | break; | |
07dfc1d0 | 135 | } else { |
02aca193 PP |
136 | if (estack_ax(stack, top)->u.s.literal_type == |
137 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { | |
f127e61e MD |
138 | ret = parse_char(estack_ax(stack, top), |
139 | &char_ax, &offset_ax); | |
140 | if (ret == -1) { | |
141 | diff = 0; | |
142 | break; | |
143 | } | |
07dfc1d0 | 144 | } |
f127e61e MD |
145 | diff = -1; |
146 | break; | |
07dfc1d0 MD |
147 | } |
148 | } | |
f127e61e | 149 | if (unlikely(char_ax == '\0')) { |
02aca193 PP |
150 | if (estack_bx(stack, top)->u.s.literal_type == |
151 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { | |
abfd272b MD |
152 | ret = parse_char(estack_bx(stack, top), |
153 | &char_bx, &offset_bx); | |
154 | if (ret == -1) { | |
155 | diff = 0; | |
156 | break; | |
07dfc1d0 | 157 | } |
07dfc1d0 | 158 | } |
abfd272b MD |
159 | diff = 1; |
160 | break; | |
07dfc1d0 | 161 | } |
02aca193 PP |
162 | if (estack_bx(stack, top)->u.s.literal_type == |
163 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { | |
f127e61e MD |
164 | ret = parse_char(estack_bx(stack, top), |
165 | &char_bx, &offset_bx); | |
07dfc1d0 | 166 | if (ret == -1) { |
f127e61e MD |
167 | diff = 0; |
168 | break; | |
07dfc1d0 MD |
169 | } else if (ret == -2) { |
170 | escaped_r0 = 1; | |
171 | } | |
172 | /* else compare both char */ | |
173 | } | |
02aca193 PP |
174 | if (estack_ax(stack, top)->u.s.literal_type == |
175 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { | |
f127e61e MD |
176 | ret = parse_char(estack_ax(stack, top), |
177 | &char_ax, &offset_ax); | |
07dfc1d0 | 178 | if (ret == -1) { |
f127e61e MD |
179 | diff = 0; |
180 | break; | |
07dfc1d0 | 181 | } else if (ret == -2) { |
f127e61e MD |
182 | if (!escaped_r0) { |
183 | diff = -1; | |
184 | break; | |
185 | } | |
07dfc1d0 | 186 | } else { |
f127e61e MD |
187 | if (escaped_r0) { |
188 | diff = 1; | |
189 | break; | |
190 | } | |
07dfc1d0 MD |
191 | } |
192 | } else { | |
f127e61e MD |
193 | if (escaped_r0) { |
194 | diff = 1; | |
195 | break; | |
196 | } | |
07dfc1d0 | 197 | } |
f127e61e | 198 | diff = char_bx - char_ax; |
07dfc1d0 MD |
199 | if (diff != 0) |
200 | break; | |
f127e61e MD |
201 | offset_bx++; |
202 | offset_ax++; | |
203 | } | |
6f192a16 | 204 | if (has_user) |
f127e61e | 205 | pagefault_enable(); |
6f192a16 | 206 | |
07dfc1d0 MD |
207 | return diff; |
208 | } | |
209 | ||
80c2a69a | 210 | uint64_t lttng_bytecode_filter_interpret_false(void *filter_data, |
79150a49 | 211 | struct lttng_probe_ctx *lttng_probe_ctx, |
07dfc1d0 MD |
212 | const char *filter_stack_data) |
213 | { | |
80c2a69a | 214 | return LTTNG_INTERPRETER_DISCARD; |
07dfc1d0 MD |
215 | } |
216 | ||
217 | #ifdef INTERPRETER_USE_SWITCH | |
218 | ||
219 | /* | |
220 | * Fallback for compilers that do not support taking address of labels. | |
221 | */ | |
222 | ||
223 | #define START_OP \ | |
224 | start_pc = &bytecode->data[0]; \ | |
225 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; \ | |
226 | pc = next_pc) { \ | |
5a15f70c | 227 | dbg_printk("LTTng: Executing op %s (%u)\n", \ |
80c2a69a FD |
228 | lttng_bytecode_print_op((unsigned int) *(bytecode_opcode_t *) pc), \ |
229 | (unsigned int) *(bytecode_opcode_t *) pc); \ | |
230 | switch (*(bytecode_opcode_t *) pc) { | |
07dfc1d0 MD |
231 | |
232 | #define OP(name) case name | |
233 | ||
234 | #define PO break | |
235 | ||
236 | #define END_OP } \ | |
237 | } | |
238 | ||
239 | #else | |
240 | ||
241 | /* | |
242 | * Dispatch-table based interpreter. | |
243 | */ | |
244 | ||
245 | #define START_OP \ | |
3834b99f | 246 | start_pc = &bytecode->code[0]; \ |
07dfc1d0 MD |
247 | pc = next_pc = start_pc; \ |
248 | if (unlikely(pc - start_pc >= bytecode->len)) \ | |
249 | goto end; \ | |
80c2a69a | 250 | goto *dispatch[*(bytecode_opcode_t *) pc]; |
07dfc1d0 MD |
251 | |
252 | #define OP(name) \ | |
253 | LABEL_##name | |
254 | ||
255 | #define PO \ | |
256 | pc = next_pc; \ | |
80c2a69a | 257 | goto *dispatch[*(bytecode_opcode_t *) pc]; |
07dfc1d0 MD |
258 | |
259 | #define END_OP | |
260 | ||
261 | #endif | |
262 | ||
1242217a FD |
263 | #define IS_INTEGER_REGISTER(reg_type) \ |
264 | (reg_type == REG_S64 || reg_type == REG_U64) | |
d644d1df | 265 | |
3834b99f MD |
266 | static int context_get_index(struct lttng_probe_ctx *lttng_probe_ctx, |
267 | struct load_ptr *ptr, | |
268 | uint32_t idx) | |
269 | { | |
270 | ||
271 | struct lttng_ctx_field *ctx_field; | |
272 | struct lttng_event_field *field; | |
273 | union lttng_ctx_value v; | |
274 | ||
275 | ctx_field = <tng_static_ctx->fields[idx]; | |
276 | field = &ctx_field->event_field; | |
277 | ptr->type = LOAD_OBJECT; | |
278 | /* field is only used for types nested within variants. */ | |
279 | ptr->field = NULL; | |
280 | ||
281 | switch (field->type.atype) { | |
282 | case atype_integer: | |
283 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
ceabb767 | 284 | if (field->type.u.integer.signedness) { |
3834b99f MD |
285 | ptr->object_type = OBJECT_TYPE_S64; |
286 | ptr->u.s64 = v.s64; | |
287 | ptr->ptr = &ptr->u.s64; | |
288 | } else { | |
289 | ptr->object_type = OBJECT_TYPE_U64; | |
290 | ptr->u.u64 = v.s64; /* Cast. */ | |
291 | ptr->ptr = &ptr->u.u64; | |
292 | } | |
293 | break; | |
ceabb767 | 294 | case atype_enum_nestable: |
3834b99f MD |
295 | { |
296 | const struct lttng_integer_type *itype = | |
ceabb767 | 297 | &field->type.u.enum_nestable.container_type->u.integer; |
3834b99f MD |
298 | |
299 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
300 | if (itype->signedness) { | |
29a574c3 | 301 | ptr->object_type = OBJECT_TYPE_SIGNED_ENUM; |
3834b99f MD |
302 | ptr->u.s64 = v.s64; |
303 | ptr->ptr = &ptr->u.s64; | |
304 | } else { | |
29a574c3 | 305 | ptr->object_type = OBJECT_TYPE_UNSIGNED_ENUM; |
3834b99f MD |
306 | ptr->u.u64 = v.s64; /* Cast. */ |
307 | ptr->ptr = &ptr->u.u64; | |
308 | } | |
309 | break; | |
310 | } | |
ceabb767 MD |
311 | case atype_array_nestable: |
312 | if (!lttng_is_bytewise_integer(field->type.u.array_nestable.elem_type)) { | |
80c2a69a | 313 | printk(KERN_WARNING "LTTng: bytecode: Array nesting only supports integer types.\n"); |
3834b99f MD |
314 | return -EINVAL; |
315 | } | |
ceabb767 | 316 | if (field->type.u.array_nestable.elem_type->u.integer.encoding == lttng_encode_none) { |
80c2a69a | 317 | printk(KERN_WARNING "LTTng: bytecode: Only string arrays are supported for contexts.\n"); |
3834b99f MD |
318 | return -EINVAL; |
319 | } | |
320 | ptr->object_type = OBJECT_TYPE_STRING; | |
321 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
322 | ptr->ptr = v.str; | |
323 | break; | |
ceabb767 MD |
324 | case atype_sequence_nestable: |
325 | if (!lttng_is_bytewise_integer(field->type.u.sequence_nestable.elem_type)) { | |
80c2a69a | 326 | printk(KERN_WARNING "LTTng: bytecode: Sequence nesting only supports integer types.\n"); |
3834b99f MD |
327 | return -EINVAL; |
328 | } | |
ceabb767 | 329 | if (field->type.u.sequence_nestable.elem_type->u.integer.encoding == lttng_encode_none) { |
80c2a69a | 330 | printk(KERN_WARNING "LTTng: bytecode: Only string sequences are supported for contexts.\n"); |
3834b99f MD |
331 | return -EINVAL; |
332 | } | |
333 | ptr->object_type = OBJECT_TYPE_STRING; | |
334 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
335 | ptr->ptr = v.str; | |
336 | break; | |
3834b99f MD |
337 | case atype_string: |
338 | ptr->object_type = OBJECT_TYPE_STRING; | |
339 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
340 | ptr->ptr = v.str; | |
341 | break; | |
ceabb767 | 342 | case atype_struct_nestable: |
80c2a69a | 343 | printk(KERN_WARNING "LTTng: bytecode: Structure type cannot be loaded.\n"); |
3834b99f | 344 | return -EINVAL; |
ceabb767 | 345 | case atype_variant_nestable: |
80c2a69a | 346 | printk(KERN_WARNING "LTTng: bytecode: Variant type cannot be loaded.\n"); |
ceabb767 | 347 | return -EINVAL; |
3834b99f | 348 | default: |
80c2a69a | 349 | printk(KERN_WARNING "LTTng: bytecode: Unknown type: %d", (int) field->type.atype); |
3834b99f MD |
350 | return -EINVAL; |
351 | } | |
352 | return 0; | |
353 | } | |
354 | ||
355 | static int dynamic_get_index(struct lttng_probe_ctx *lttng_probe_ctx, | |
356 | struct bytecode_runtime *runtime, | |
357 | uint64_t index, struct estack_entry *stack_top) | |
358 | { | |
359 | int ret; | |
80c2a69a | 360 | const struct bytecode_get_index_data *gid; |
3834b99f | 361 | |
80c2a69a | 362 | gid = (const struct bytecode_get_index_data *) &runtime->data[index]; |
3834b99f MD |
363 | switch (stack_top->u.ptr.type) { |
364 | case LOAD_OBJECT: | |
365 | switch (stack_top->u.ptr.object_type) { | |
366 | case OBJECT_TYPE_ARRAY: | |
367 | { | |
368 | const char *ptr; | |
369 | ||
370 | WARN_ON_ONCE(gid->offset >= gid->array_len); | |
371 | /* Skip count (unsigned long) */ | |
372 | ptr = *(const char **) (stack_top->u.ptr.ptr + sizeof(unsigned long)); | |
373 | ptr = ptr + gid->offset; | |
374 | stack_top->u.ptr.ptr = ptr; | |
375 | stack_top->u.ptr.object_type = gid->elem.type; | |
376 | stack_top->u.ptr.rev_bo = gid->elem.rev_bo; | |
03cb0cdd | 377 | BUG_ON(stack_top->u.ptr.field->type.atype != atype_array_nestable); |
3834b99f MD |
378 | stack_top->u.ptr.field = NULL; |
379 | break; | |
380 | } | |
381 | case OBJECT_TYPE_SEQUENCE: | |
382 | { | |
383 | const char *ptr; | |
384 | size_t ptr_seq_len; | |
385 | ||
386 | ptr = *(const char **) (stack_top->u.ptr.ptr + sizeof(unsigned long)); | |
387 | ptr_seq_len = *(unsigned long *) stack_top->u.ptr.ptr; | |
388 | if (gid->offset >= gid->elem.len * ptr_seq_len) { | |
389 | ret = -EINVAL; | |
390 | goto end; | |
391 | } | |
392 | ptr = ptr + gid->offset; | |
393 | stack_top->u.ptr.ptr = ptr; | |
394 | stack_top->u.ptr.object_type = gid->elem.type; | |
395 | stack_top->u.ptr.rev_bo = gid->elem.rev_bo; | |
03cb0cdd | 396 | BUG_ON(stack_top->u.ptr.field->type.atype != atype_sequence_nestable); |
3834b99f MD |
397 | stack_top->u.ptr.field = NULL; |
398 | break; | |
399 | } | |
400 | case OBJECT_TYPE_STRUCT: | |
80c2a69a | 401 | printk(KERN_WARNING "LTTng: bytecode: Nested structures are not supported yet.\n"); |
3834b99f MD |
402 | ret = -EINVAL; |
403 | goto end; | |
404 | case OBJECT_TYPE_VARIANT: | |
405 | default: | |
80c2a69a | 406 | printk(KERN_WARNING "LTTng: bytecode: Unexpected get index type %d", |
3834b99f MD |
407 | (int) stack_top->u.ptr.object_type); |
408 | ret = -EINVAL; | |
409 | goto end; | |
410 | } | |
411 | break; | |
412 | case LOAD_ROOT_CONTEXT: | |
413 | case LOAD_ROOT_APP_CONTEXT: /* Fall-through */ | |
414 | { | |
415 | ret = context_get_index(lttng_probe_ctx, | |
416 | &stack_top->u.ptr, | |
417 | gid->ctx_index); | |
418 | if (ret) { | |
419 | goto end; | |
420 | } | |
421 | break; | |
422 | } | |
423 | case LOAD_ROOT_PAYLOAD: | |
424 | stack_top->u.ptr.ptr += gid->offset; | |
425 | if (gid->elem.type == OBJECT_TYPE_STRING) | |
426 | stack_top->u.ptr.ptr = *(const char * const *) stack_top->u.ptr.ptr; | |
427 | stack_top->u.ptr.object_type = gid->elem.type; | |
428 | stack_top->u.ptr.type = LOAD_OBJECT; | |
03cb0cdd | 429 | stack_top->u.ptr.field = gid->field; |
60e8b0d6 | 430 | stack_top->u.ptr.rev_bo = gid->elem.rev_bo; |
3834b99f MD |
431 | break; |
432 | } | |
196e531f FD |
433 | |
434 | stack_top->type = REG_PTR; | |
435 | ||
3834b99f MD |
436 | return 0; |
437 | ||
438 | end: | |
439 | return ret; | |
440 | } | |
441 | ||
442 | static int dynamic_load_field(struct estack_entry *stack_top) | |
443 | { | |
444 | int ret; | |
445 | ||
446 | switch (stack_top->u.ptr.type) { | |
447 | case LOAD_OBJECT: | |
448 | break; | |
449 | case LOAD_ROOT_CONTEXT: | |
450 | case LOAD_ROOT_APP_CONTEXT: | |
451 | case LOAD_ROOT_PAYLOAD: | |
452 | default: | |
80c2a69a | 453 | dbg_printk("Bytecode warning: cannot load root, missing field name.\n"); |
3834b99f MD |
454 | ret = -EINVAL; |
455 | goto end; | |
456 | } | |
457 | switch (stack_top->u.ptr.object_type) { | |
458 | case OBJECT_TYPE_S8: | |
459 | dbg_printk("op load field s8\n"); | |
460 | stack_top->u.v = *(int8_t *) stack_top->u.ptr.ptr; | |
d644d1df | 461 | stack_top->type = REG_S64; |
3834b99f MD |
462 | break; |
463 | case OBJECT_TYPE_S16: | |
464 | { | |
465 | int16_t tmp; | |
466 | ||
467 | dbg_printk("op load field s16\n"); | |
468 | tmp = *(int16_t *) stack_top->u.ptr.ptr; | |
469 | if (stack_top->u.ptr.rev_bo) | |
470 | __swab16s(&tmp); | |
471 | stack_top->u.v = tmp; | |
d644d1df | 472 | stack_top->type = REG_S64; |
3834b99f MD |
473 | break; |
474 | } | |
475 | case OBJECT_TYPE_S32: | |
476 | { | |
477 | int32_t tmp; | |
478 | ||
479 | dbg_printk("op load field s32\n"); | |
480 | tmp = *(int32_t *) stack_top->u.ptr.ptr; | |
481 | if (stack_top->u.ptr.rev_bo) | |
482 | __swab32s(&tmp); | |
483 | stack_top->u.v = tmp; | |
d644d1df | 484 | stack_top->type = REG_S64; |
3834b99f MD |
485 | break; |
486 | } | |
487 | case OBJECT_TYPE_S64: | |
488 | { | |
489 | int64_t tmp; | |
490 | ||
491 | dbg_printk("op load field s64\n"); | |
492 | tmp = *(int64_t *) stack_top->u.ptr.ptr; | |
493 | if (stack_top->u.ptr.rev_bo) | |
494 | __swab64s(&tmp); | |
495 | stack_top->u.v = tmp; | |
d644d1df | 496 | stack_top->type = REG_S64; |
3834b99f MD |
497 | break; |
498 | } | |
29a574c3 FD |
499 | case OBJECT_TYPE_SIGNED_ENUM: |
500 | { | |
501 | int64_t tmp; | |
502 | ||
503 | dbg_printk("op load field signed enumeration\n"); | |
504 | tmp = *(int64_t *) stack_top->u.ptr.ptr; | |
505 | if (stack_top->u.ptr.rev_bo) | |
506 | __swab64s(&tmp); | |
507 | stack_top->u.v = tmp; | |
508 | stack_top->type = REG_S64; | |
509 | break; | |
510 | } | |
3834b99f MD |
511 | case OBJECT_TYPE_U8: |
512 | dbg_printk("op load field u8\n"); | |
513 | stack_top->u.v = *(uint8_t *) stack_top->u.ptr.ptr; | |
1242217a | 514 | stack_top->type = REG_U64; |
3834b99f MD |
515 | break; |
516 | case OBJECT_TYPE_U16: | |
517 | { | |
518 | uint16_t tmp; | |
519 | ||
5fae98f7 | 520 | dbg_printk("op load field u16\n"); |
3834b99f MD |
521 | tmp = *(uint16_t *) stack_top->u.ptr.ptr; |
522 | if (stack_top->u.ptr.rev_bo) | |
523 | __swab16s(&tmp); | |
524 | stack_top->u.v = tmp; | |
1242217a | 525 | stack_top->type = REG_U64; |
3834b99f MD |
526 | break; |
527 | } | |
528 | case OBJECT_TYPE_U32: | |
529 | { | |
530 | uint32_t tmp; | |
531 | ||
532 | dbg_printk("op load field u32\n"); | |
533 | tmp = *(uint32_t *) stack_top->u.ptr.ptr; | |
534 | if (stack_top->u.ptr.rev_bo) | |
535 | __swab32s(&tmp); | |
536 | stack_top->u.v = tmp; | |
1242217a | 537 | stack_top->type = REG_U64; |
3834b99f MD |
538 | break; |
539 | } | |
540 | case OBJECT_TYPE_U64: | |
541 | { | |
542 | uint64_t tmp; | |
543 | ||
544 | dbg_printk("op load field u64\n"); | |
545 | tmp = *(uint64_t *) stack_top->u.ptr.ptr; | |
546 | if (stack_top->u.ptr.rev_bo) | |
547 | __swab64s(&tmp); | |
548 | stack_top->u.v = tmp; | |
1242217a | 549 | stack_top->type = REG_U64; |
3834b99f MD |
550 | break; |
551 | } | |
29a574c3 FD |
552 | case OBJECT_TYPE_UNSIGNED_ENUM: |
553 | { | |
554 | uint64_t tmp; | |
555 | ||
556 | dbg_printk("op load field unsigned enumeration\n"); | |
557 | tmp = *(uint64_t *) stack_top->u.ptr.ptr; | |
558 | if (stack_top->u.ptr.rev_bo) | |
559 | __swab64s(&tmp); | |
560 | stack_top->u.v = tmp; | |
561 | stack_top->type = REG_U64; | |
562 | break; | |
563 | } | |
3834b99f MD |
564 | case OBJECT_TYPE_STRING: |
565 | { | |
566 | const char *str; | |
567 | ||
568 | dbg_printk("op load field string\n"); | |
569 | str = (const char *) stack_top->u.ptr.ptr; | |
570 | stack_top->u.s.str = str; | |
571 | if (unlikely(!stack_top->u.s.str)) { | |
80c2a69a | 572 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
3834b99f MD |
573 | ret = -EINVAL; |
574 | goto end; | |
575 | } | |
4efe037b | 576 | stack_top->u.s.seq_len = LTTNG_SIZE_MAX; |
3834b99f MD |
577 | stack_top->u.s.literal_type = |
578 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 579 | stack_top->type = REG_STRING; |
3834b99f MD |
580 | break; |
581 | } | |
582 | case OBJECT_TYPE_STRING_SEQUENCE: | |
583 | { | |
584 | const char *ptr; | |
585 | ||
586 | dbg_printk("op load field string sequence\n"); | |
587 | ptr = stack_top->u.ptr.ptr; | |
588 | stack_top->u.s.seq_len = *(unsigned long *) ptr; | |
589 | stack_top->u.s.str = *(const char **) (ptr + sizeof(unsigned long)); | |
590 | if (unlikely(!stack_top->u.s.str)) { | |
80c2a69a | 591 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
3834b99f MD |
592 | ret = -EINVAL; |
593 | goto end; | |
594 | } | |
595 | stack_top->u.s.literal_type = | |
596 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 597 | stack_top->type = REG_STRING; |
3834b99f MD |
598 | break; |
599 | } | |
600 | case OBJECT_TYPE_DYNAMIC: | |
601 | /* | |
602 | * Dynamic types in context are looked up | |
603 | * by context get index. | |
604 | */ | |
605 | ret = -EINVAL; | |
606 | goto end; | |
607 | case OBJECT_TYPE_DOUBLE: | |
608 | ret = -EINVAL; | |
609 | goto end; | |
610 | case OBJECT_TYPE_SEQUENCE: | |
611 | case OBJECT_TYPE_ARRAY: | |
612 | case OBJECT_TYPE_STRUCT: | |
613 | case OBJECT_TYPE_VARIANT: | |
80c2a69a | 614 | printk(KERN_WARNING "LTTng: bytecode: Sequences, arrays, struct and variant cannot be loaded (nested types).\n"); |
3834b99f MD |
615 | ret = -EINVAL; |
616 | goto end; | |
617 | } | |
618 | return 0; | |
619 | ||
620 | end: | |
621 | return ret; | |
622 | } | |
623 | ||
03cb0cdd FD |
624 | static |
625 | int lttng_bytecode_interpret_format_output(struct estack_entry *ax, | |
626 | struct lttng_interpreter_output *output) | |
627 | { | |
628 | int ret; | |
629 | ||
630 | again: | |
631 | switch (ax->type) { | |
632 | case REG_S64: | |
633 | output->type = LTTNG_INTERPRETER_TYPE_S64; | |
634 | output->u.s = ax->u.v; | |
635 | break; | |
636 | case REG_U64: | |
637 | output->type = LTTNG_INTERPRETER_TYPE_U64; | |
638 | output->u.u = (uint64_t) ax->u.v; | |
639 | break; | |
640 | case REG_STRING: | |
641 | output->type = LTTNG_INTERPRETER_TYPE_STRING; | |
642 | output->u.str.str = ax->u.s.str; | |
643 | output->u.str.len = ax->u.s.seq_len; | |
644 | break; | |
645 | case REG_PTR: | |
646 | switch (ax->u.ptr.object_type) { | |
647 | case OBJECT_TYPE_S8: | |
648 | case OBJECT_TYPE_S16: | |
649 | case OBJECT_TYPE_S32: | |
650 | case OBJECT_TYPE_S64: | |
651 | case OBJECT_TYPE_U8: | |
652 | case OBJECT_TYPE_U16: | |
653 | case OBJECT_TYPE_U32: | |
654 | case OBJECT_TYPE_U64: | |
655 | case OBJECT_TYPE_DOUBLE: | |
656 | case OBJECT_TYPE_STRING: | |
657 | case OBJECT_TYPE_STRING_SEQUENCE: | |
658 | ret = dynamic_load_field(ax); | |
659 | if (ret) | |
660 | return ret; | |
661 | /* Retry after loading ptr into stack top. */ | |
662 | goto again; | |
663 | case OBJECT_TYPE_SEQUENCE: | |
664 | output->type = LTTNG_INTERPRETER_TYPE_SEQUENCE; | |
665 | output->u.sequence.ptr = *(const char **) (ax->u.ptr.ptr + sizeof(unsigned long)); | |
666 | output->u.sequence.nr_elem = *(unsigned long *) ax->u.ptr.ptr; | |
667 | output->u.sequence.nested_type = ax->u.ptr.field->type.u.sequence_nestable.elem_type; | |
668 | break; | |
669 | case OBJECT_TYPE_ARRAY: | |
670 | /* Skip count (unsigned long) */ | |
671 | output->type = LTTNG_INTERPRETER_TYPE_SEQUENCE; | |
672 | output->u.sequence.ptr = *(const char **) (ax->u.ptr.ptr + sizeof(unsigned long)); | |
673 | output->u.sequence.nr_elem = ax->u.ptr.field->type.u.array_nestable.length; | |
674 | output->u.sequence.nested_type = ax->u.ptr.field->type.u.array_nestable.elem_type; | |
675 | break; | |
29a574c3 FD |
676 | case OBJECT_TYPE_SIGNED_ENUM: |
677 | ret = dynamic_load_field(ax); | |
678 | if (ret) | |
679 | return ret; | |
680 | output->type = LTTNG_INTERPRETER_TYPE_SIGNED_ENUM; | |
681 | output->u.s = ax->u.v; | |
682 | break; | |
683 | case OBJECT_TYPE_UNSIGNED_ENUM: | |
684 | ret = dynamic_load_field(ax); | |
685 | if (ret) | |
686 | return ret; | |
687 | output->type = LTTNG_INTERPRETER_TYPE_UNSIGNED_ENUM; | |
688 | output->u.u = ax->u.v; | |
689 | break; | |
03cb0cdd FD |
690 | case OBJECT_TYPE_STRUCT: |
691 | case OBJECT_TYPE_VARIANT: | |
692 | default: | |
693 | return -EINVAL; | |
694 | } | |
695 | ||
696 | break; | |
697 | case REG_STAR_GLOB_STRING: | |
698 | case REG_TYPE_UNKNOWN: | |
699 | default: | |
700 | return -EINVAL; | |
701 | } | |
702 | ||
80c2a69a | 703 | return LTTNG_INTERPRETER_RECORD_FLAG; |
03cb0cdd FD |
704 | } |
705 | ||
07dfc1d0 MD |
706 | /* |
707 | * Return 0 (discard), or raise the 0x1 flag (log event). | |
708 | * Currently, other flags are kept for future extensions and have no | |
709 | * effect. | |
710 | */ | |
03cb0cdd FD |
711 | static |
712 | uint64_t bytecode_interpret(void *interpreter_data, | |
79150a49 | 713 | struct lttng_probe_ctx *lttng_probe_ctx, |
03cb0cdd FD |
714 | const char *interpreter_stack_data, |
715 | struct lttng_interpreter_output *output) | |
07dfc1d0 | 716 | { |
03cb0cdd | 717 | struct bytecode_runtime *bytecode = interpreter_data; |
07dfc1d0 MD |
718 | void *pc, *next_pc, *start_pc; |
719 | int ret = -EINVAL; | |
720 | uint64_t retval = 0; | |
721 | struct estack _stack; | |
722 | struct estack *stack = &_stack; | |
723 | register int64_t ax = 0, bx = 0; | |
d644d1df | 724 | register enum entry_type ax_t = REG_TYPE_UNKNOWN, bx_t = REG_TYPE_UNKNOWN; |
80c2a69a | 725 | register int top = INTERPRETER_STACK_EMPTY; |
07dfc1d0 | 726 | #ifndef INTERPRETER_USE_SWITCH |
80c2a69a FD |
727 | static void *dispatch[NR_BYTECODE_OPS] = { |
728 | [ BYTECODE_OP_UNKNOWN ] = &&LABEL_BYTECODE_OP_UNKNOWN, | |
07dfc1d0 | 729 | |
80c2a69a | 730 | [ BYTECODE_OP_RETURN ] = &&LABEL_BYTECODE_OP_RETURN, |
07dfc1d0 MD |
731 | |
732 | /* binary */ | |
80c2a69a FD |
733 | [ BYTECODE_OP_MUL ] = &&LABEL_BYTECODE_OP_MUL, |
734 | [ BYTECODE_OP_DIV ] = &&LABEL_BYTECODE_OP_DIV, | |
735 | [ BYTECODE_OP_MOD ] = &&LABEL_BYTECODE_OP_MOD, | |
736 | [ BYTECODE_OP_PLUS ] = &&LABEL_BYTECODE_OP_PLUS, | |
737 | [ BYTECODE_OP_MINUS ] = &&LABEL_BYTECODE_OP_MINUS, | |
738 | [ BYTECODE_OP_BIT_RSHIFT ] = &&LABEL_BYTECODE_OP_BIT_RSHIFT, | |
739 | [ BYTECODE_OP_BIT_LSHIFT ] = &&LABEL_BYTECODE_OP_BIT_LSHIFT, | |
740 | [ BYTECODE_OP_BIT_AND ] = &&LABEL_BYTECODE_OP_BIT_AND, | |
741 | [ BYTECODE_OP_BIT_OR ] = &&LABEL_BYTECODE_OP_BIT_OR, | |
742 | [ BYTECODE_OP_BIT_XOR ] = &&LABEL_BYTECODE_OP_BIT_XOR, | |
07dfc1d0 MD |
743 | |
744 | /* binary comparators */ | |
80c2a69a FD |
745 | [ BYTECODE_OP_EQ ] = &&LABEL_BYTECODE_OP_EQ, |
746 | [ BYTECODE_OP_NE ] = &&LABEL_BYTECODE_OP_NE, | |
747 | [ BYTECODE_OP_GT ] = &&LABEL_BYTECODE_OP_GT, | |
748 | [ BYTECODE_OP_LT ] = &&LABEL_BYTECODE_OP_LT, | |
749 | [ BYTECODE_OP_GE ] = &&LABEL_BYTECODE_OP_GE, | |
750 | [ BYTECODE_OP_LE ] = &&LABEL_BYTECODE_OP_LE, | |
07dfc1d0 MD |
751 | |
752 | /* string binary comparator */ | |
80c2a69a FD |
753 | [ BYTECODE_OP_EQ_STRING ] = &&LABEL_BYTECODE_OP_EQ_STRING, |
754 | [ BYTECODE_OP_NE_STRING ] = &&LABEL_BYTECODE_OP_NE_STRING, | |
755 | [ BYTECODE_OP_GT_STRING ] = &&LABEL_BYTECODE_OP_GT_STRING, | |
756 | [ BYTECODE_OP_LT_STRING ] = &&LABEL_BYTECODE_OP_LT_STRING, | |
757 | [ BYTECODE_OP_GE_STRING ] = &&LABEL_BYTECODE_OP_GE_STRING, | |
758 | [ BYTECODE_OP_LE_STRING ] = &&LABEL_BYTECODE_OP_LE_STRING, | |
07dfc1d0 | 759 | |
02aca193 | 760 | /* globbing pattern binary comparator */ |
80c2a69a FD |
761 | [ BYTECODE_OP_EQ_STAR_GLOB_STRING ] = &&LABEL_BYTECODE_OP_EQ_STAR_GLOB_STRING, |
762 | [ BYTECODE_OP_NE_STAR_GLOB_STRING ] = &&LABEL_BYTECODE_OP_NE_STAR_GLOB_STRING, | |
02aca193 | 763 | |
07dfc1d0 | 764 | /* s64 binary comparator */ |
80c2a69a FD |
765 | [ BYTECODE_OP_EQ_S64 ] = &&LABEL_BYTECODE_OP_EQ_S64, |
766 | [ BYTECODE_OP_NE_S64 ] = &&LABEL_BYTECODE_OP_NE_S64, | |
767 | [ BYTECODE_OP_GT_S64 ] = &&LABEL_BYTECODE_OP_GT_S64, | |
768 | [ BYTECODE_OP_LT_S64 ] = &&LABEL_BYTECODE_OP_LT_S64, | |
769 | [ BYTECODE_OP_GE_S64 ] = &&LABEL_BYTECODE_OP_GE_S64, | |
770 | [ BYTECODE_OP_LE_S64 ] = &&LABEL_BYTECODE_OP_LE_S64, | |
07dfc1d0 MD |
771 | |
772 | /* double binary comparator */ | |
80c2a69a FD |
773 | [ BYTECODE_OP_EQ_DOUBLE ] = &&LABEL_BYTECODE_OP_EQ_DOUBLE, |
774 | [ BYTECODE_OP_NE_DOUBLE ] = &&LABEL_BYTECODE_OP_NE_DOUBLE, | |
775 | [ BYTECODE_OP_GT_DOUBLE ] = &&LABEL_BYTECODE_OP_GT_DOUBLE, | |
776 | [ BYTECODE_OP_LT_DOUBLE ] = &&LABEL_BYTECODE_OP_LT_DOUBLE, | |
777 | [ BYTECODE_OP_GE_DOUBLE ] = &&LABEL_BYTECODE_OP_GE_DOUBLE, | |
778 | [ BYTECODE_OP_LE_DOUBLE ] = &&LABEL_BYTECODE_OP_LE_DOUBLE, | |
07dfc1d0 MD |
779 | |
780 | /* Mixed S64-double binary comparators */ | |
80c2a69a FD |
781 | [ BYTECODE_OP_EQ_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_EQ_DOUBLE_S64, |
782 | [ BYTECODE_OP_NE_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_NE_DOUBLE_S64, | |
783 | [ BYTECODE_OP_GT_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_GT_DOUBLE_S64, | |
784 | [ BYTECODE_OP_LT_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_LT_DOUBLE_S64, | |
785 | [ BYTECODE_OP_GE_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_GE_DOUBLE_S64, | |
786 | [ BYTECODE_OP_LE_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_LE_DOUBLE_S64, | |
787 | ||
788 | [ BYTECODE_OP_EQ_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_EQ_S64_DOUBLE, | |
789 | [ BYTECODE_OP_NE_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_NE_S64_DOUBLE, | |
790 | [ BYTECODE_OP_GT_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_GT_S64_DOUBLE, | |
791 | [ BYTECODE_OP_LT_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_LT_S64_DOUBLE, | |
792 | [ BYTECODE_OP_GE_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_GE_S64_DOUBLE, | |
793 | [ BYTECODE_OP_LE_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_LE_S64_DOUBLE, | |
07dfc1d0 MD |
794 | |
795 | /* unary */ | |
80c2a69a FD |
796 | [ BYTECODE_OP_UNARY_PLUS ] = &&LABEL_BYTECODE_OP_UNARY_PLUS, |
797 | [ BYTECODE_OP_UNARY_MINUS ] = &&LABEL_BYTECODE_OP_UNARY_MINUS, | |
798 | [ BYTECODE_OP_UNARY_NOT ] = &&LABEL_BYTECODE_OP_UNARY_NOT, | |
799 | [ BYTECODE_OP_UNARY_PLUS_S64 ] = &&LABEL_BYTECODE_OP_UNARY_PLUS_S64, | |
800 | [ BYTECODE_OP_UNARY_MINUS_S64 ] = &&LABEL_BYTECODE_OP_UNARY_MINUS_S64, | |
801 | [ BYTECODE_OP_UNARY_NOT_S64 ] = &&LABEL_BYTECODE_OP_UNARY_NOT_S64, | |
802 | [ BYTECODE_OP_UNARY_PLUS_DOUBLE ] = &&LABEL_BYTECODE_OP_UNARY_PLUS_DOUBLE, | |
803 | [ BYTECODE_OP_UNARY_MINUS_DOUBLE ] = &&LABEL_BYTECODE_OP_UNARY_MINUS_DOUBLE, | |
804 | [ BYTECODE_OP_UNARY_NOT_DOUBLE ] = &&LABEL_BYTECODE_OP_UNARY_NOT_DOUBLE, | |
07dfc1d0 MD |
805 | |
806 | /* logical */ | |
80c2a69a FD |
807 | [ BYTECODE_OP_AND ] = &&LABEL_BYTECODE_OP_AND, |
808 | [ BYTECODE_OP_OR ] = &&LABEL_BYTECODE_OP_OR, | |
07dfc1d0 MD |
809 | |
810 | /* load field ref */ | |
80c2a69a FD |
811 | [ BYTECODE_OP_LOAD_FIELD_REF ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF, |
812 | [ BYTECODE_OP_LOAD_FIELD_REF_STRING ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_STRING, | |
813 | [ BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE, | |
814 | [ BYTECODE_OP_LOAD_FIELD_REF_S64 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_S64, | |
815 | [ BYTECODE_OP_LOAD_FIELD_REF_DOUBLE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_DOUBLE, | |
07dfc1d0 MD |
816 | |
817 | /* load from immediate operand */ | |
80c2a69a FD |
818 | [ BYTECODE_OP_LOAD_STRING ] = &&LABEL_BYTECODE_OP_LOAD_STRING, |
819 | [ BYTECODE_OP_LOAD_STAR_GLOB_STRING ] = &&LABEL_BYTECODE_OP_LOAD_STAR_GLOB_STRING, | |
820 | [ BYTECODE_OP_LOAD_S64 ] = &&LABEL_BYTECODE_OP_LOAD_S64, | |
821 | [ BYTECODE_OP_LOAD_DOUBLE ] = &&LABEL_BYTECODE_OP_LOAD_DOUBLE, | |
07dfc1d0 MD |
822 | |
823 | /* cast */ | |
80c2a69a FD |
824 | [ BYTECODE_OP_CAST_TO_S64 ] = &&LABEL_BYTECODE_OP_CAST_TO_S64, |
825 | [ BYTECODE_OP_CAST_DOUBLE_TO_S64 ] = &&LABEL_BYTECODE_OP_CAST_DOUBLE_TO_S64, | |
826 | [ BYTECODE_OP_CAST_NOP ] = &&LABEL_BYTECODE_OP_CAST_NOP, | |
07dfc1d0 MD |
827 | |
828 | /* get context ref */ | |
80c2a69a FD |
829 | [ BYTECODE_OP_GET_CONTEXT_REF ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF, |
830 | [ BYTECODE_OP_GET_CONTEXT_REF_STRING ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF_STRING, | |
831 | [ BYTECODE_OP_GET_CONTEXT_REF_S64 ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF_S64, | |
832 | [ BYTECODE_OP_GET_CONTEXT_REF_DOUBLE ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF_DOUBLE, | |
f127e61e MD |
833 | |
834 | /* load userspace field ref */ | |
80c2a69a FD |
835 | [ BYTECODE_OP_LOAD_FIELD_REF_USER_STRING ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_USER_STRING, |
836 | [ BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE, | |
3834b99f MD |
837 | |
838 | /* Instructions for recursive traversal through composed types. */ | |
80c2a69a FD |
839 | [ BYTECODE_OP_GET_CONTEXT_ROOT ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_ROOT, |
840 | [ BYTECODE_OP_GET_APP_CONTEXT_ROOT ] = &&LABEL_BYTECODE_OP_GET_APP_CONTEXT_ROOT, | |
841 | [ BYTECODE_OP_GET_PAYLOAD_ROOT ] = &&LABEL_BYTECODE_OP_GET_PAYLOAD_ROOT, | |
842 | ||
843 | [ BYTECODE_OP_GET_SYMBOL ] = &&LABEL_BYTECODE_OP_GET_SYMBOL, | |
844 | [ BYTECODE_OP_GET_SYMBOL_FIELD ] = &&LABEL_BYTECODE_OP_GET_SYMBOL_FIELD, | |
845 | [ BYTECODE_OP_GET_INDEX_U16 ] = &&LABEL_BYTECODE_OP_GET_INDEX_U16, | |
846 | [ BYTECODE_OP_GET_INDEX_U64 ] = &&LABEL_BYTECODE_OP_GET_INDEX_U64, | |
847 | ||
848 | [ BYTECODE_OP_LOAD_FIELD ] = &&LABEL_BYTECODE_OP_LOAD_FIELD, | |
849 | [ BYTECODE_OP_LOAD_FIELD_S8 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S8, | |
850 | [ BYTECODE_OP_LOAD_FIELD_S16 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S16, | |
851 | [ BYTECODE_OP_LOAD_FIELD_S32 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S32, | |
852 | [ BYTECODE_OP_LOAD_FIELD_S64 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S64, | |
853 | [ BYTECODE_OP_LOAD_FIELD_U8 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U8, | |
854 | [ BYTECODE_OP_LOAD_FIELD_U16 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U16, | |
855 | [ BYTECODE_OP_LOAD_FIELD_U32 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U32, | |
856 | [ BYTECODE_OP_LOAD_FIELD_U64 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U64, | |
857 | [ BYTECODE_OP_LOAD_FIELD_STRING ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_STRING, | |
858 | [ BYTECODE_OP_LOAD_FIELD_SEQUENCE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_SEQUENCE, | |
859 | [ BYTECODE_OP_LOAD_FIELD_DOUBLE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_DOUBLE, | |
860 | ||
861 | [ BYTECODE_OP_UNARY_BIT_NOT ] = &&LABEL_BYTECODE_OP_UNARY_BIT_NOT, | |
862 | ||
863 | [ BYTECODE_OP_RETURN_S64 ] = &&LABEL_BYTECODE_OP_RETURN_S64, | |
07dfc1d0 MD |
864 | }; |
865 | #endif /* #ifndef INTERPRETER_USE_SWITCH */ | |
866 | ||
867 | START_OP | |
868 | ||
80c2a69a FD |
869 | OP(BYTECODE_OP_UNKNOWN): |
870 | OP(BYTECODE_OP_LOAD_FIELD_REF): | |
871 | OP(BYTECODE_OP_GET_CONTEXT_REF): | |
07dfc1d0 MD |
872 | #ifdef INTERPRETER_USE_SWITCH |
873 | default: | |
874 | #endif /* INTERPRETER_USE_SWITCH */ | |
80c2a69a FD |
875 | printk(KERN_WARNING "LTTng: bytecode: unknown bytecode op %u\n", |
876 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
877 | ret = -EINVAL; |
878 | goto end; | |
879 | ||
80c2a69a FD |
880 | OP(BYTECODE_OP_RETURN): |
881 | OP(BYTECODE_OP_RETURN_S64): | |
882 | /* LTTNG_INTERPRETER_DISCARD or LTTNG_INTERPRETER_RECORD_FLAG */ | |
d644d1df FD |
883 | switch (estack_ax_t) { |
884 | case REG_S64: | |
1242217a | 885 | case REG_U64: |
d644d1df FD |
886 | retval = !!estack_ax_v; |
887 | break; | |
888 | case REG_DOUBLE: | |
889 | case REG_STRING: | |
890 | case REG_PTR: | |
03cb0cdd FD |
891 | if (!output) { |
892 | ret = -EINVAL; | |
893 | goto end; | |
894 | } | |
895 | retval = 0; | |
896 | break; | |
d644d1df FD |
897 | case REG_STAR_GLOB_STRING: |
898 | case REG_TYPE_UNKNOWN: | |
899 | ret = -EINVAL; | |
900 | goto end; | |
901 | } | |
07dfc1d0 MD |
902 | ret = 0; |
903 | goto end; | |
904 | ||
905 | /* binary */ | |
80c2a69a FD |
906 | OP(BYTECODE_OP_MUL): |
907 | OP(BYTECODE_OP_DIV): | |
908 | OP(BYTECODE_OP_MOD): | |
909 | OP(BYTECODE_OP_PLUS): | |
910 | OP(BYTECODE_OP_MINUS): | |
911 | printk(KERN_WARNING "LTTng: bytecode: unsupported bytecode op %u\n", | |
912 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
913 | ret = -EINVAL; |
914 | goto end; | |
915 | ||
80c2a69a FD |
916 | OP(BYTECODE_OP_EQ): |
917 | OP(BYTECODE_OP_NE): | |
918 | OP(BYTECODE_OP_GT): | |
919 | OP(BYTECODE_OP_LT): | |
920 | OP(BYTECODE_OP_GE): | |
921 | OP(BYTECODE_OP_LE): | |
922 | printk(KERN_WARNING "LTTng: bytecode: unsupported non-specialized bytecode op %u\n", | |
923 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
924 | ret = -EINVAL; |
925 | goto end; | |
926 | ||
80c2a69a | 927 | OP(BYTECODE_OP_EQ_STRING): |
07dfc1d0 MD |
928 | { |
929 | int res; | |
930 | ||
931 | res = (stack_strcmp(stack, top, "==") == 0); | |
d644d1df | 932 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 933 | estack_ax_v = res; |
d644d1df | 934 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
935 | next_pc += sizeof(struct binary_op); |
936 | PO; | |
937 | } | |
80c2a69a | 938 | OP(BYTECODE_OP_NE_STRING): |
07dfc1d0 MD |
939 | { |
940 | int res; | |
941 | ||
942 | res = (stack_strcmp(stack, top, "!=") != 0); | |
d644d1df | 943 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 944 | estack_ax_v = res; |
d644d1df | 945 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
946 | next_pc += sizeof(struct binary_op); |
947 | PO; | |
948 | } | |
80c2a69a | 949 | OP(BYTECODE_OP_GT_STRING): |
07dfc1d0 MD |
950 | { |
951 | int res; | |
952 | ||
953 | res = (stack_strcmp(stack, top, ">") > 0); | |
d644d1df | 954 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 955 | estack_ax_v = res; |
d644d1df | 956 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
957 | next_pc += sizeof(struct binary_op); |
958 | PO; | |
959 | } | |
80c2a69a | 960 | OP(BYTECODE_OP_LT_STRING): |
07dfc1d0 MD |
961 | { |
962 | int res; | |
963 | ||
964 | res = (stack_strcmp(stack, top, "<") < 0); | |
d644d1df | 965 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 966 | estack_ax_v = res; |
d644d1df | 967 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
968 | next_pc += sizeof(struct binary_op); |
969 | PO; | |
970 | } | |
80c2a69a | 971 | OP(BYTECODE_OP_GE_STRING): |
07dfc1d0 MD |
972 | { |
973 | int res; | |
974 | ||
975 | res = (stack_strcmp(stack, top, ">=") >= 0); | |
d644d1df | 976 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 977 | estack_ax_v = res; |
d644d1df | 978 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
979 | next_pc += sizeof(struct binary_op); |
980 | PO; | |
981 | } | |
80c2a69a | 982 | OP(BYTECODE_OP_LE_STRING): |
07dfc1d0 MD |
983 | { |
984 | int res; | |
985 | ||
986 | res = (stack_strcmp(stack, top, "<=") <= 0); | |
d644d1df | 987 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 988 | estack_ax_v = res; |
d644d1df | 989 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
990 | next_pc += sizeof(struct binary_op); |
991 | PO; | |
992 | } | |
993 | ||
80c2a69a | 994 | OP(BYTECODE_OP_EQ_STAR_GLOB_STRING): |
02aca193 PP |
995 | { |
996 | int res; | |
997 | ||
998 | res = (stack_star_glob_match(stack, top, "==") == 0); | |
d644d1df | 999 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
02aca193 | 1000 | estack_ax_v = res; |
d644d1df | 1001 | estack_ax_t = REG_S64; |
02aca193 PP |
1002 | next_pc += sizeof(struct binary_op); |
1003 | PO; | |
1004 | } | |
80c2a69a | 1005 | OP(BYTECODE_OP_NE_STAR_GLOB_STRING): |
02aca193 PP |
1006 | { |
1007 | int res; | |
1008 | ||
1009 | res = (stack_star_glob_match(stack, top, "!=") != 0); | |
d644d1df | 1010 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
02aca193 | 1011 | estack_ax_v = res; |
d644d1df | 1012 | estack_ax_t = REG_S64; |
02aca193 PP |
1013 | next_pc += sizeof(struct binary_op); |
1014 | PO; | |
1015 | } | |
1016 | ||
80c2a69a | 1017 | OP(BYTECODE_OP_EQ_S64): |
07dfc1d0 MD |
1018 | { |
1019 | int res; | |
1020 | ||
1021 | res = (estack_bx_v == estack_ax_v); | |
d644d1df | 1022 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1023 | estack_ax_v = res; |
d644d1df | 1024 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1025 | next_pc += sizeof(struct binary_op); |
1026 | PO; | |
1027 | } | |
80c2a69a | 1028 | OP(BYTECODE_OP_NE_S64): |
07dfc1d0 MD |
1029 | { |
1030 | int res; | |
1031 | ||
1032 | res = (estack_bx_v != estack_ax_v); | |
d644d1df | 1033 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1034 | estack_ax_v = res; |
d644d1df | 1035 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1036 | next_pc += sizeof(struct binary_op); |
1037 | PO; | |
1038 | } | |
80c2a69a | 1039 | OP(BYTECODE_OP_GT_S64): |
07dfc1d0 MD |
1040 | { |
1041 | int res; | |
1042 | ||
1043 | res = (estack_bx_v > estack_ax_v); | |
d644d1df | 1044 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1045 | estack_ax_v = res; |
d644d1df | 1046 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1047 | next_pc += sizeof(struct binary_op); |
1048 | PO; | |
1049 | } | |
80c2a69a | 1050 | OP(BYTECODE_OP_LT_S64): |
07dfc1d0 MD |
1051 | { |
1052 | int res; | |
1053 | ||
1054 | res = (estack_bx_v < estack_ax_v); | |
d644d1df | 1055 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1056 | estack_ax_v = res; |
d644d1df | 1057 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1058 | next_pc += sizeof(struct binary_op); |
1059 | PO; | |
1060 | } | |
80c2a69a | 1061 | OP(BYTECODE_OP_GE_S64): |
07dfc1d0 MD |
1062 | { |
1063 | int res; | |
1064 | ||
1065 | res = (estack_bx_v >= estack_ax_v); | |
d644d1df | 1066 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1067 | estack_ax_v = res; |
d644d1df | 1068 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1069 | next_pc += sizeof(struct binary_op); |
1070 | PO; | |
1071 | } | |
80c2a69a | 1072 | OP(BYTECODE_OP_LE_S64): |
07dfc1d0 MD |
1073 | { |
1074 | int res; | |
1075 | ||
1076 | res = (estack_bx_v <= estack_ax_v); | |
d644d1df | 1077 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1078 | estack_ax_v = res; |
d644d1df | 1079 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1080 | next_pc += sizeof(struct binary_op); |
1081 | PO; | |
1082 | } | |
1083 | ||
80c2a69a FD |
1084 | OP(BYTECODE_OP_EQ_DOUBLE): |
1085 | OP(BYTECODE_OP_NE_DOUBLE): | |
1086 | OP(BYTECODE_OP_GT_DOUBLE): | |
1087 | OP(BYTECODE_OP_LT_DOUBLE): | |
1088 | OP(BYTECODE_OP_GE_DOUBLE): | |
1089 | OP(BYTECODE_OP_LE_DOUBLE): | |
07dfc1d0 MD |
1090 | { |
1091 | BUG_ON(1); | |
1092 | PO; | |
1093 | } | |
1094 | ||
1095 | /* Mixed S64-double binary comparators */ | |
80c2a69a FD |
1096 | OP(BYTECODE_OP_EQ_DOUBLE_S64): |
1097 | OP(BYTECODE_OP_NE_DOUBLE_S64): | |
1098 | OP(BYTECODE_OP_GT_DOUBLE_S64): | |
1099 | OP(BYTECODE_OP_LT_DOUBLE_S64): | |
1100 | OP(BYTECODE_OP_GE_DOUBLE_S64): | |
1101 | OP(BYTECODE_OP_LE_DOUBLE_S64): | |
1102 | OP(BYTECODE_OP_EQ_S64_DOUBLE): | |
1103 | OP(BYTECODE_OP_NE_S64_DOUBLE): | |
1104 | OP(BYTECODE_OP_GT_S64_DOUBLE): | |
1105 | OP(BYTECODE_OP_LT_S64_DOUBLE): | |
1106 | OP(BYTECODE_OP_GE_S64_DOUBLE): | |
1107 | OP(BYTECODE_OP_LE_S64_DOUBLE): | |
07dfc1d0 MD |
1108 | { |
1109 | BUG_ON(1); | |
1110 | PO; | |
1111 | } | |
80c2a69a | 1112 | OP(BYTECODE_OP_BIT_RSHIFT): |
e16c054b MD |
1113 | { |
1114 | int64_t res; | |
1115 | ||
d644d1df FD |
1116 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1117 | ret = -EINVAL; | |
1118 | goto end; | |
1119 | } | |
1120 | ||
ea13ec96 MD |
1121 | /* Catch undefined behavior. */ |
1122 | if (unlikely(estack_ax_v < 0 || estack_ax_v >= 64)) { | |
1123 | ret = -EINVAL; | |
1124 | goto end; | |
1125 | } | |
f8d42740 | 1126 | res = ((uint64_t) estack_bx_v >> (uint32_t) estack_ax_v); |
d644d1df | 1127 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
e16c054b | 1128 | estack_ax_v = res; |
1242217a | 1129 | estack_ax_t = REG_U64; |
e16c054b MD |
1130 | next_pc += sizeof(struct binary_op); |
1131 | PO; | |
1132 | } | |
80c2a69a | 1133 | OP(BYTECODE_OP_BIT_LSHIFT): |
e16c054b MD |
1134 | { |
1135 | int64_t res; | |
1136 | ||
d644d1df FD |
1137 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1138 | ret = -EINVAL; | |
1139 | goto end; | |
1140 | } | |
1141 | ||
ea13ec96 MD |
1142 | /* Catch undefined behavior. */ |
1143 | if (unlikely(estack_ax_v < 0 || estack_ax_v >= 64)) { | |
1144 | ret = -EINVAL; | |
1145 | goto end; | |
1146 | } | |
f8d42740 | 1147 | res = ((uint64_t) estack_bx_v << (uint32_t) estack_ax_v); |
d644d1df | 1148 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
e16c054b | 1149 | estack_ax_v = res; |
1242217a | 1150 | estack_ax_t = REG_U64; |
e16c054b MD |
1151 | next_pc += sizeof(struct binary_op); |
1152 | PO; | |
1153 | } | |
80c2a69a | 1154 | OP(BYTECODE_OP_BIT_AND): |
3834b99f MD |
1155 | { |
1156 | int64_t res; | |
1157 | ||
d644d1df FD |
1158 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1159 | ret = -EINVAL; | |
1160 | goto end; | |
1161 | } | |
1162 | ||
f8d42740 | 1163 | res = ((uint64_t) estack_bx_v & (uint64_t) estack_ax_v); |
d644d1df | 1164 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1165 | estack_ax_v = res; |
1242217a | 1166 | estack_ax_t = REG_U64; |
3834b99f MD |
1167 | next_pc += sizeof(struct binary_op); |
1168 | PO; | |
1169 | } | |
80c2a69a | 1170 | OP(BYTECODE_OP_BIT_OR): |
3834b99f MD |
1171 | { |
1172 | int64_t res; | |
1173 | ||
d644d1df FD |
1174 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1175 | ret = -EINVAL; | |
1176 | goto end; | |
1177 | } | |
1178 | ||
f8d42740 | 1179 | res = ((uint64_t) estack_bx_v | (uint64_t) estack_ax_v); |
d644d1df | 1180 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1181 | estack_ax_v = res; |
1242217a | 1182 | estack_ax_t = REG_U64; |
3834b99f MD |
1183 | next_pc += sizeof(struct binary_op); |
1184 | PO; | |
1185 | } | |
80c2a69a | 1186 | OP(BYTECODE_OP_BIT_XOR): |
3834b99f MD |
1187 | { |
1188 | int64_t res; | |
1189 | ||
d644d1df FD |
1190 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1191 | ret = -EINVAL; | |
1192 | goto end; | |
1193 | } | |
1194 | ||
f8d42740 | 1195 | res = ((uint64_t) estack_bx_v ^ (uint64_t) estack_ax_v); |
d644d1df | 1196 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1197 | estack_ax_v = res; |
1242217a | 1198 | estack_ax_t = REG_U64; |
3834b99f MD |
1199 | next_pc += sizeof(struct binary_op); |
1200 | PO; | |
1201 | } | |
07dfc1d0 MD |
1202 | |
1203 | /* unary */ | |
80c2a69a FD |
1204 | OP(BYTECODE_OP_UNARY_PLUS): |
1205 | OP(BYTECODE_OP_UNARY_MINUS): | |
1206 | OP(BYTECODE_OP_UNARY_NOT): | |
1207 | printk(KERN_WARNING "LTTng: bytecode: unsupported non-specialized bytecode op %u\n", | |
1208 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
1209 | ret = -EINVAL; |
1210 | goto end; | |
1211 | ||
1212 | ||
80c2a69a | 1213 | OP(BYTECODE_OP_UNARY_BIT_NOT): |
e16c054b | 1214 | { |
f8d42740 | 1215 | estack_ax_v = ~(uint64_t) estack_ax_v; |
d644d1df | 1216 | estack_ax_t = REG_S64; |
e16c054b MD |
1217 | next_pc += sizeof(struct unary_op); |
1218 | PO; | |
1219 | } | |
1220 | ||
80c2a69a | 1221 | OP(BYTECODE_OP_UNARY_PLUS_S64): |
07dfc1d0 MD |
1222 | { |
1223 | next_pc += sizeof(struct unary_op); | |
1224 | PO; | |
1225 | } | |
80c2a69a | 1226 | OP(BYTECODE_OP_UNARY_MINUS_S64): |
07dfc1d0 MD |
1227 | { |
1228 | estack_ax_v = -estack_ax_v; | |
d644d1df | 1229 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1230 | next_pc += sizeof(struct unary_op); |
1231 | PO; | |
1232 | } | |
80c2a69a FD |
1233 | OP(BYTECODE_OP_UNARY_PLUS_DOUBLE): |
1234 | OP(BYTECODE_OP_UNARY_MINUS_DOUBLE): | |
07dfc1d0 MD |
1235 | { |
1236 | BUG_ON(1); | |
1237 | PO; | |
1238 | } | |
80c2a69a | 1239 | OP(BYTECODE_OP_UNARY_NOT_S64): |
07dfc1d0 MD |
1240 | { |
1241 | estack_ax_v = !estack_ax_v; | |
d644d1df | 1242 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1243 | next_pc += sizeof(struct unary_op); |
1244 | PO; | |
1245 | } | |
80c2a69a | 1246 | OP(BYTECODE_OP_UNARY_NOT_DOUBLE): |
07dfc1d0 MD |
1247 | { |
1248 | BUG_ON(1); | |
1249 | PO; | |
1250 | } | |
1251 | ||
1252 | /* logical */ | |
80c2a69a | 1253 | OP(BYTECODE_OP_AND): |
07dfc1d0 MD |
1254 | { |
1255 | struct logical_op *insn = (struct logical_op *) pc; | |
1256 | ||
1257 | /* If AX is 0, skip and evaluate to 0 */ | |
1258 | if (unlikely(estack_ax_v == 0)) { | |
1259 | dbg_printk("Jumping to bytecode offset %u\n", | |
1260 | (unsigned int) insn->skip_offset); | |
1261 | next_pc = start_pc + insn->skip_offset; | |
1262 | } else { | |
1263 | /* Pop 1 when jump not taken */ | |
d644d1df | 1264 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 MD |
1265 | next_pc += sizeof(struct logical_op); |
1266 | } | |
1267 | PO; | |
1268 | } | |
80c2a69a | 1269 | OP(BYTECODE_OP_OR): |
07dfc1d0 MD |
1270 | { |
1271 | struct logical_op *insn = (struct logical_op *) pc; | |
1272 | ||
1273 | /* If AX is nonzero, skip and evaluate to 1 */ | |
1274 | ||
1275 | if (unlikely(estack_ax_v != 0)) { | |
1276 | estack_ax_v = 1; | |
1277 | dbg_printk("Jumping to bytecode offset %u\n", | |
1278 | (unsigned int) insn->skip_offset); | |
1279 | next_pc = start_pc + insn->skip_offset; | |
1280 | } else { | |
1281 | /* Pop 1 when jump not taken */ | |
d644d1df | 1282 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 MD |
1283 | next_pc += sizeof(struct logical_op); |
1284 | } | |
1285 | PO; | |
1286 | } | |
1287 | ||
1288 | ||
1289 | /* load field ref */ | |
80c2a69a | 1290 | OP(BYTECODE_OP_LOAD_FIELD_REF_STRING): |
07dfc1d0 MD |
1291 | { |
1292 | struct load_op *insn = (struct load_op *) pc; | |
1293 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1294 | ||
1295 | dbg_printk("load field ref offset %u type string\n", | |
1296 | ref->offset); | |
d644d1df | 1297 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1298 | estack_ax(stack, top)->u.s.str = |
03cb0cdd | 1299 | *(const char * const *) &interpreter_stack_data[ref->offset]; |
07dfc1d0 | 1300 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
80c2a69a | 1301 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
07dfc1d0 MD |
1302 | ret = -EINVAL; |
1303 | goto end; | |
1304 | } | |
cbc19040 | 1305 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1306 | estack_ax(stack, top)->u.s.literal_type = |
1307 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1308 | estack_ax(stack, top)->u.s.user = 0; |
d644d1df | 1309 | estack_ax(stack, top)->type = REG_STRING; |
07dfc1d0 MD |
1310 | dbg_printk("ref load string %s\n", estack_ax(stack, top)->u.s.str); |
1311 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1312 | PO; | |
1313 | } | |
1314 | ||
80c2a69a | 1315 | OP(BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE): |
07dfc1d0 MD |
1316 | { |
1317 | struct load_op *insn = (struct load_op *) pc; | |
1318 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1319 | ||
1320 | dbg_printk("load field ref offset %u type sequence\n", | |
1321 | ref->offset); | |
d644d1df | 1322 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1323 | estack_ax(stack, top)->u.s.seq_len = |
03cb0cdd | 1324 | *(unsigned long *) &interpreter_stack_data[ref->offset]; |
07dfc1d0 | 1325 | estack_ax(stack, top)->u.s.str = |
03cb0cdd | 1326 | *(const char **) (&interpreter_stack_data[ref->offset |
07dfc1d0 MD |
1327 | + sizeof(unsigned long)]); |
1328 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1329 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
07dfc1d0 MD |
1330 | ret = -EINVAL; |
1331 | goto end; | |
1332 | } | |
02aca193 PP |
1333 | estack_ax(stack, top)->u.s.literal_type = |
1334 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1335 | estack_ax(stack, top)->u.s.user = 0; |
07dfc1d0 MD |
1336 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1337 | PO; | |
1338 | } | |
1339 | ||
80c2a69a | 1340 | OP(BYTECODE_OP_LOAD_FIELD_REF_S64): |
07dfc1d0 MD |
1341 | { |
1342 | struct load_op *insn = (struct load_op *) pc; | |
1343 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1344 | ||
1345 | dbg_printk("load field ref offset %u type s64\n", | |
1346 | ref->offset); | |
d644d1df | 1347 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1348 | estack_ax_v = |
03cb0cdd | 1349 | ((struct literal_numeric *) &interpreter_stack_data[ref->offset])->v; |
d644d1df | 1350 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1351 | dbg_printk("ref load s64 %lld\n", |
1352 | (long long) estack_ax_v); | |
1353 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1354 | PO; | |
1355 | } | |
1356 | ||
80c2a69a | 1357 | OP(BYTECODE_OP_LOAD_FIELD_REF_DOUBLE): |
07dfc1d0 MD |
1358 | { |
1359 | BUG_ON(1); | |
1360 | PO; | |
1361 | } | |
1362 | ||
1363 | /* load from immediate operand */ | |
80c2a69a | 1364 | OP(BYTECODE_OP_LOAD_STRING): |
07dfc1d0 MD |
1365 | { |
1366 | struct load_op *insn = (struct load_op *) pc; | |
1367 | ||
1368 | dbg_printk("load string %s\n", insn->data); | |
d644d1df | 1369 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1370 | estack_ax(stack, top)->u.s.str = insn->data; |
cbc19040 | 1371 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1372 | estack_ax(stack, top)->u.s.literal_type = |
1373 | ESTACK_STRING_LITERAL_TYPE_PLAIN; | |
1374 | estack_ax(stack, top)->u.s.user = 0; | |
1375 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
1376 | PO; | |
1377 | } | |
1378 | ||
80c2a69a | 1379 | OP(BYTECODE_OP_LOAD_STAR_GLOB_STRING): |
02aca193 PP |
1380 | { |
1381 | struct load_op *insn = (struct load_op *) pc; | |
1382 | ||
1383 | dbg_printk("load globbing pattern %s\n", insn->data); | |
d644d1df | 1384 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
02aca193 | 1385 | estack_ax(stack, top)->u.s.str = insn->data; |
cbc19040 | 1386 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1387 | estack_ax(stack, top)->u.s.literal_type = |
1388 | ESTACK_STRING_LITERAL_TYPE_STAR_GLOB; | |
f127e61e | 1389 | estack_ax(stack, top)->u.s.user = 0; |
07dfc1d0 MD |
1390 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
1391 | PO; | |
1392 | } | |
1393 | ||
80c2a69a | 1394 | OP(BYTECODE_OP_LOAD_S64): |
07dfc1d0 MD |
1395 | { |
1396 | struct load_op *insn = (struct load_op *) pc; | |
1397 | ||
d644d1df | 1398 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1399 | estack_ax_v = ((struct literal_numeric *) insn->data)->v; |
d644d1df | 1400 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1401 | dbg_printk("load s64 %lld\n", |
1402 | (long long) estack_ax_v); | |
1403 | next_pc += sizeof(struct load_op) | |
1404 | + sizeof(struct literal_numeric); | |
1405 | PO; | |
1406 | } | |
1407 | ||
80c2a69a | 1408 | OP(BYTECODE_OP_LOAD_DOUBLE): |
07dfc1d0 MD |
1409 | { |
1410 | BUG_ON(1); | |
1411 | PO; | |
1412 | } | |
1413 | ||
1414 | /* cast */ | |
80c2a69a FD |
1415 | OP(BYTECODE_OP_CAST_TO_S64): |
1416 | printk(KERN_WARNING "LTTng: bytecode: unsupported non-specialized bytecode op %u\n", | |
1417 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
1418 | ret = -EINVAL; |
1419 | goto end; | |
1420 | ||
80c2a69a | 1421 | OP(BYTECODE_OP_CAST_DOUBLE_TO_S64): |
07dfc1d0 MD |
1422 | { |
1423 | BUG_ON(1); | |
1424 | PO; | |
1425 | } | |
1426 | ||
80c2a69a | 1427 | OP(BYTECODE_OP_CAST_NOP): |
07dfc1d0 MD |
1428 | { |
1429 | next_pc += sizeof(struct cast_op); | |
1430 | PO; | |
1431 | } | |
1432 | ||
1433 | /* get context ref */ | |
80c2a69a | 1434 | OP(BYTECODE_OP_GET_CONTEXT_REF_STRING): |
07dfc1d0 MD |
1435 | { |
1436 | struct load_op *insn = (struct load_op *) pc; | |
1437 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1438 | struct lttng_ctx_field *ctx_field; | |
1439 | union lttng_ctx_value v; | |
1440 | ||
1441 | dbg_printk("get context ref offset %u type string\n", | |
1442 | ref->offset); | |
1443 | ctx_field = <tng_static_ctx->fields[ref->offset]; | |
79150a49 | 1444 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); |
d644d1df | 1445 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 MD |
1446 | estack_ax(stack, top)->u.s.str = v.str; |
1447 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1448 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
07dfc1d0 MD |
1449 | ret = -EINVAL; |
1450 | goto end; | |
1451 | } | |
cbc19040 | 1452 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1453 | estack_ax(stack, top)->u.s.literal_type = |
1454 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1455 | estack_ax(stack, top)->u.s.user = 0; |
d644d1df | 1456 | estack_ax(stack, top)->type = REG_STRING; |
07dfc1d0 MD |
1457 | dbg_printk("ref get context string %s\n", estack_ax(stack, top)->u.s.str); |
1458 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1459 | PO; | |
1460 | } | |
1461 | ||
80c2a69a | 1462 | OP(BYTECODE_OP_GET_CONTEXT_REF_S64): |
07dfc1d0 MD |
1463 | { |
1464 | struct load_op *insn = (struct load_op *) pc; | |
1465 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1466 | struct lttng_ctx_field *ctx_field; | |
1467 | union lttng_ctx_value v; | |
1468 | ||
1469 | dbg_printk("get context ref offset %u type s64\n", | |
1470 | ref->offset); | |
1471 | ctx_field = <tng_static_ctx->fields[ref->offset]; | |
79150a49 | 1472 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); |
d644d1df | 1473 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1474 | estack_ax_v = v.s64; |
d644d1df | 1475 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1476 | dbg_printk("ref get context s64 %lld\n", |
1477 | (long long) estack_ax_v); | |
1478 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1479 | PO; | |
1480 | } | |
1481 | ||
80c2a69a | 1482 | OP(BYTECODE_OP_GET_CONTEXT_REF_DOUBLE): |
07dfc1d0 MD |
1483 | { |
1484 | BUG_ON(1); | |
1485 | PO; | |
1486 | } | |
1487 | ||
f127e61e | 1488 | /* load userspace field ref */ |
80c2a69a | 1489 | OP(BYTECODE_OP_LOAD_FIELD_REF_USER_STRING): |
f127e61e MD |
1490 | { |
1491 | struct load_op *insn = (struct load_op *) pc; | |
1492 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1493 | ||
1494 | dbg_printk("load field ref offset %u type user string\n", | |
1495 | ref->offset); | |
d644d1df | 1496 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
5b4ad89f | 1497 | estack_ax(stack, top)->u.s.user_str = |
03cb0cdd | 1498 | *(const char * const *) &interpreter_stack_data[ref->offset]; |
f127e61e | 1499 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
80c2a69a | 1500 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
f127e61e MD |
1501 | ret = -EINVAL; |
1502 | goto end; | |
1503 | } | |
cbc19040 | 1504 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1505 | estack_ax(stack, top)->u.s.literal_type = |
1506 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1507 | estack_ax(stack, top)->u.s.user = 1; |
d644d1df | 1508 | estack_ax(stack, top)->type = REG_STRING; |
f127e61e MD |
1509 | dbg_printk("ref load string %s\n", estack_ax(stack, top)->u.s.str); |
1510 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1511 | PO; | |
1512 | } | |
1513 | ||
80c2a69a | 1514 | OP(BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE): |
f127e61e MD |
1515 | { |
1516 | struct load_op *insn = (struct load_op *) pc; | |
1517 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1518 | ||
1519 | dbg_printk("load field ref offset %u type user sequence\n", | |
1520 | ref->offset); | |
d644d1df | 1521 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
f127e61e | 1522 | estack_ax(stack, top)->u.s.seq_len = |
03cb0cdd | 1523 | *(unsigned long *) &interpreter_stack_data[ref->offset]; |
5b4ad89f | 1524 | estack_ax(stack, top)->u.s.user_str = |
03cb0cdd | 1525 | *(const char **) (&interpreter_stack_data[ref->offset |
f127e61e MD |
1526 | + sizeof(unsigned long)]); |
1527 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1528 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
f127e61e MD |
1529 | ret = -EINVAL; |
1530 | goto end; | |
1531 | } | |
02aca193 PP |
1532 | estack_ax(stack, top)->u.s.literal_type = |
1533 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e MD |
1534 | estack_ax(stack, top)->u.s.user = 1; |
1535 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1536 | PO; | |
1537 | } | |
1538 | ||
80c2a69a | 1539 | OP(BYTECODE_OP_GET_CONTEXT_ROOT): |
3834b99f MD |
1540 | { |
1541 | dbg_printk("op get context root\n"); | |
d644d1df | 1542 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
3834b99f MD |
1543 | estack_ax(stack, top)->u.ptr.type = LOAD_ROOT_CONTEXT; |
1544 | /* "field" only needed for variants. */ | |
1545 | estack_ax(stack, top)->u.ptr.field = NULL; | |
d644d1df | 1546 | estack_ax(stack, top)->type = REG_PTR; |
3834b99f MD |
1547 | next_pc += sizeof(struct load_op); |
1548 | PO; | |
1549 | } | |
1550 | ||
80c2a69a | 1551 | OP(BYTECODE_OP_GET_APP_CONTEXT_ROOT): |
3834b99f MD |
1552 | { |
1553 | BUG_ON(1); | |
1554 | PO; | |
1555 | } | |
1556 | ||
80c2a69a | 1557 | OP(BYTECODE_OP_GET_PAYLOAD_ROOT): |
3834b99f MD |
1558 | { |
1559 | dbg_printk("op get app payload root\n"); | |
d644d1df | 1560 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1561 | estack_ax(stack, top)->u.ptr.type = LOAD_ROOT_PAYLOAD; |
03cb0cdd | 1562 | estack_ax(stack, top)->u.ptr.ptr = interpreter_stack_data; |
3834b99f MD |
1563 | /* "field" only needed for variants. */ |
1564 | estack_ax(stack, top)->u.ptr.field = NULL; | |
d644d1df | 1565 | estack_ax(stack, top)->type = REG_PTR; |
3834b99f MD |
1566 | next_pc += sizeof(struct load_op); |
1567 | PO; | |
1568 | } | |
1569 | ||
80c2a69a | 1570 | OP(BYTECODE_OP_GET_SYMBOL): |
3834b99f MD |
1571 | { |
1572 | dbg_printk("op get symbol\n"); | |
1573 | switch (estack_ax(stack, top)->u.ptr.type) { | |
1574 | case LOAD_OBJECT: | |
80c2a69a | 1575 | printk(KERN_WARNING "LTTng: bytecode: Nested fields not implemented yet.\n"); |
3834b99f MD |
1576 | ret = -EINVAL; |
1577 | goto end; | |
1578 | case LOAD_ROOT_CONTEXT: | |
1579 | case LOAD_ROOT_APP_CONTEXT: | |
1580 | case LOAD_ROOT_PAYLOAD: | |
1581 | /* | |
1582 | * symbol lookup is performed by | |
1583 | * specialization. | |
1584 | */ | |
1585 | ret = -EINVAL; | |
1586 | goto end; | |
1587 | } | |
1588 | next_pc += sizeof(struct load_op) + sizeof(struct get_symbol); | |
1589 | PO; | |
1590 | } | |
1591 | ||
80c2a69a | 1592 | OP(BYTECODE_OP_GET_SYMBOL_FIELD): |
3834b99f MD |
1593 | { |
1594 | /* | |
1595 | * Used for first variant encountered in a | |
1596 | * traversal. Variants are not implemented yet. | |
1597 | */ | |
1598 | ret = -EINVAL; | |
1599 | goto end; | |
1600 | } | |
1601 | ||
80c2a69a | 1602 | OP(BYTECODE_OP_GET_INDEX_U16): |
3834b99f MD |
1603 | { |
1604 | struct load_op *insn = (struct load_op *) pc; | |
1605 | struct get_index_u16 *index = (struct get_index_u16 *) insn->data; | |
1606 | ||
1607 | dbg_printk("op get index u16\n"); | |
1608 | ret = dynamic_get_index(lttng_probe_ctx, bytecode, index->index, estack_ax(stack, top)); | |
1609 | if (ret) | |
1610 | goto end; | |
1611 | estack_ax_v = estack_ax(stack, top)->u.v; | |
d644d1df | 1612 | estack_ax_t = estack_ax(stack, top)->type; |
3834b99f MD |
1613 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16); |
1614 | PO; | |
1615 | } | |
1616 | ||
80c2a69a | 1617 | OP(BYTECODE_OP_GET_INDEX_U64): |
3834b99f MD |
1618 | { |
1619 | struct load_op *insn = (struct load_op *) pc; | |
1620 | struct get_index_u64 *index = (struct get_index_u64 *) insn->data; | |
1621 | ||
1622 | dbg_printk("op get index u64\n"); | |
1623 | ret = dynamic_get_index(lttng_probe_ctx, bytecode, index->index, estack_ax(stack, top)); | |
1624 | if (ret) | |
1625 | goto end; | |
1626 | estack_ax_v = estack_ax(stack, top)->u.v; | |
d644d1df | 1627 | estack_ax_t = estack_ax(stack, top)->type; |
3834b99f MD |
1628 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64); |
1629 | PO; | |
1630 | } | |
1631 | ||
80c2a69a | 1632 | OP(BYTECODE_OP_LOAD_FIELD): |
3834b99f MD |
1633 | { |
1634 | dbg_printk("op load field\n"); | |
1635 | ret = dynamic_load_field(estack_ax(stack, top)); | |
1636 | if (ret) | |
1637 | goto end; | |
1638 | estack_ax_v = estack_ax(stack, top)->u.v; | |
d644d1df | 1639 | estack_ax_t = estack_ax(stack, top)->type; |
3834b99f MD |
1640 | next_pc += sizeof(struct load_op); |
1641 | PO; | |
1642 | } | |
1643 | ||
80c2a69a | 1644 | OP(BYTECODE_OP_LOAD_FIELD_S8): |
3834b99f MD |
1645 | { |
1646 | dbg_printk("op load field s8\n"); | |
1647 | ||
1648 | estack_ax_v = *(int8_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1649 | estack_ax_t = REG_S64; |
3834b99f MD |
1650 | next_pc += sizeof(struct load_op); |
1651 | PO; | |
1652 | } | |
80c2a69a | 1653 | OP(BYTECODE_OP_LOAD_FIELD_S16): |
3834b99f MD |
1654 | { |
1655 | dbg_printk("op load field s16\n"); | |
1656 | ||
1657 | estack_ax_v = *(int16_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1658 | estack_ax_t = REG_S64; |
3834b99f MD |
1659 | next_pc += sizeof(struct load_op); |
1660 | PO; | |
1661 | } | |
80c2a69a | 1662 | OP(BYTECODE_OP_LOAD_FIELD_S32): |
3834b99f MD |
1663 | { |
1664 | dbg_printk("op load field s32\n"); | |
1665 | ||
1666 | estack_ax_v = *(int32_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1667 | estack_ax_t = REG_S64; |
3834b99f MD |
1668 | next_pc += sizeof(struct load_op); |
1669 | PO; | |
1670 | } | |
80c2a69a | 1671 | OP(BYTECODE_OP_LOAD_FIELD_S64): |
3834b99f MD |
1672 | { |
1673 | dbg_printk("op load field s64\n"); | |
1674 | ||
1675 | estack_ax_v = *(int64_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1676 | estack_ax_t = REG_S64; |
3834b99f MD |
1677 | next_pc += sizeof(struct load_op); |
1678 | PO; | |
1679 | } | |
80c2a69a | 1680 | OP(BYTECODE_OP_LOAD_FIELD_U8): |
3834b99f MD |
1681 | { |
1682 | dbg_printk("op load field u8\n"); | |
1683 | ||
1684 | estack_ax_v = *(uint8_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1685 | estack_ax_t = REG_S64; |
3834b99f MD |
1686 | next_pc += sizeof(struct load_op); |
1687 | PO; | |
1688 | } | |
80c2a69a | 1689 | OP(BYTECODE_OP_LOAD_FIELD_U16): |
3834b99f MD |
1690 | { |
1691 | dbg_printk("op load field u16\n"); | |
1692 | ||
1693 | estack_ax_v = *(uint16_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1694 | estack_ax_t = REG_S64; |
3834b99f MD |
1695 | next_pc += sizeof(struct load_op); |
1696 | PO; | |
1697 | } | |
80c2a69a | 1698 | OP(BYTECODE_OP_LOAD_FIELD_U32): |
3834b99f MD |
1699 | { |
1700 | dbg_printk("op load field u32\n"); | |
1701 | ||
1702 | estack_ax_v = *(uint32_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1703 | estack_ax_t = REG_S64; |
3834b99f MD |
1704 | next_pc += sizeof(struct load_op); |
1705 | PO; | |
1706 | } | |
80c2a69a | 1707 | OP(BYTECODE_OP_LOAD_FIELD_U64): |
3834b99f MD |
1708 | { |
1709 | dbg_printk("op load field u64\n"); | |
1710 | ||
1711 | estack_ax_v = *(uint64_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1712 | estack_ax_t = REG_S64; |
3834b99f MD |
1713 | next_pc += sizeof(struct load_op); |
1714 | PO; | |
1715 | } | |
80c2a69a | 1716 | OP(BYTECODE_OP_LOAD_FIELD_DOUBLE): |
3834b99f MD |
1717 | { |
1718 | ret = -EINVAL; | |
1719 | goto end; | |
1720 | } | |
1721 | ||
80c2a69a | 1722 | OP(BYTECODE_OP_LOAD_FIELD_STRING): |
3834b99f MD |
1723 | { |
1724 | const char *str; | |
1725 | ||
1726 | dbg_printk("op load field string\n"); | |
1727 | str = (const char *) estack_ax(stack, top)->u.ptr.ptr; | |
1728 | estack_ax(stack, top)->u.s.str = str; | |
1729 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1730 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
3834b99f MD |
1731 | ret = -EINVAL; |
1732 | goto end; | |
1733 | } | |
4efe037b | 1734 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
3834b99f MD |
1735 | estack_ax(stack, top)->u.s.literal_type = |
1736 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 1737 | estack_ax(stack, top)->type = REG_STRING; |
3834b99f MD |
1738 | next_pc += sizeof(struct load_op); |
1739 | PO; | |
1740 | } | |
1741 | ||
80c2a69a | 1742 | OP(BYTECODE_OP_LOAD_FIELD_SEQUENCE): |
3834b99f MD |
1743 | { |
1744 | const char *ptr; | |
1745 | ||
1746 | dbg_printk("op load field string sequence\n"); | |
1747 | ptr = estack_ax(stack, top)->u.ptr.ptr; | |
1748 | estack_ax(stack, top)->u.s.seq_len = *(unsigned long *) ptr; | |
1749 | estack_ax(stack, top)->u.s.str = *(const char **) (ptr + sizeof(unsigned long)); | |
1750 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1751 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
3834b99f MD |
1752 | ret = -EINVAL; |
1753 | goto end; | |
1754 | } | |
1755 | estack_ax(stack, top)->u.s.literal_type = | |
1756 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 1757 | estack_ax(stack, top)->type = REG_STRING; |
3834b99f MD |
1758 | next_pc += sizeof(struct load_op); |
1759 | PO; | |
1760 | } | |
1761 | ||
07dfc1d0 MD |
1762 | END_OP |
1763 | end: | |
a93d4e71 | 1764 | /* Return _DISCARD on error. */ |
07dfc1d0 | 1765 | if (ret) |
80c2a69a | 1766 | return LTTNG_INTERPRETER_DISCARD; |
03cb0cdd FD |
1767 | |
1768 | if (output) { | |
1769 | return lttng_bytecode_interpret_format_output( | |
1770 | estack_ax(stack, top), output); | |
1771 | } | |
1772 | ||
07dfc1d0 MD |
1773 | return retval; |
1774 | } | |
03cb0cdd FD |
1775 | LTTNG_STACK_FRAME_NON_STANDARD(bytecode_interpret); |
1776 | ||
80c2a69a | 1777 | uint64_t lttng_bytecode_filter_interpret(void *filter_data, |
03cb0cdd FD |
1778 | struct lttng_probe_ctx *lttng_probe_ctx, |
1779 | const char *filter_stack_data) | |
1780 | { | |
1781 | return bytecode_interpret(filter_data, lttng_probe_ctx, | |
1782 | filter_stack_data, NULL); | |
1783 | } | |
07dfc1d0 MD |
1784 | |
1785 | #undef START_OP | |
1786 | #undef OP | |
1787 | #undef PO | |
1788 | #undef END_OP |