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> |
437d5aa5 | 17 | #include <lttng/events-internal.h> |
07dfc1d0 | 18 | |
f127e61e MD |
19 | /* |
20 | * get_char should be called with page fault handler disabled if it is expected | |
21 | * to handle user-space read. | |
22 | */ | |
23 | static | |
acbe9250 | 24 | char get_char(const struct estack_entry *reg, size_t offset) |
f127e61e MD |
25 | { |
26 | if (unlikely(offset >= reg->u.s.seq_len)) | |
27 | return '\0'; | |
28 | if (reg->u.s.user) { | |
29 | char c; | |
30 | ||
31 | /* Handle invalid access as end of string. */ | |
80bb2600 | 32 | if (unlikely(!lttng_access_ok(VERIFY_READ, |
f127e61e MD |
33 | reg->u.s.user_str + offset, |
34 | sizeof(c)))) | |
35 | return '\0'; | |
36 | /* Handle fault (nonzero return value) as end of string. */ | |
37 | if (unlikely(__copy_from_user_inatomic(&c, | |
38 | reg->u.s.user_str + offset, | |
39 | sizeof(c)))) | |
40 | return '\0'; | |
41 | return c; | |
42 | } else { | |
43 | return reg->u.s.str[offset]; | |
44 | } | |
45 | } | |
46 | ||
07dfc1d0 MD |
47 | /* |
48 | * -1: wildcard found. | |
49 | * -2: unknown escape char. | |
50 | * 0: normal char. | |
51 | */ | |
07dfc1d0 | 52 | static |
f127e61e | 53 | int parse_char(struct estack_entry *reg, char *c, size_t *offset) |
07dfc1d0 | 54 | { |
f127e61e | 55 | switch (*c) { |
07dfc1d0 | 56 | case '\\': |
f127e61e MD |
57 | (*offset)++; |
58 | *c = get_char(reg, *offset); | |
59 | switch (*c) { | |
07dfc1d0 MD |
60 | case '\\': |
61 | case '*': | |
62 | return 0; | |
63 | default: | |
64 | return -2; | |
65 | } | |
66 | case '*': | |
67 | return -1; | |
68 | default: | |
69 | return 0; | |
70 | } | |
71 | } | |
72 | ||
02aca193 PP |
73 | static |
74 | char get_char_at_cb(size_t at, void *data) | |
75 | { | |
76 | return get_char(data, at); | |
77 | } | |
78 | ||
79 | static | |
80 | int stack_star_glob_match(struct estack *stack, int top, const char *cmp_type) | |
81 | { | |
82 | bool has_user = false; | |
02aca193 PP |
83 | int result; |
84 | struct estack_entry *pattern_reg; | |
85 | struct estack_entry *candidate_reg; | |
86 | ||
6f192a16 | 87 | /* Disable the page fault handler when reading from userspace. */ |
02aca193 PP |
88 | if (estack_bx(stack, top)->u.s.user |
89 | || estack_ax(stack, top)->u.s.user) { | |
90 | has_user = true; | |
02aca193 PP |
91 | pagefault_disable(); |
92 | } | |
93 | ||
94 | /* Find out which side is the pattern vs. the candidate. */ | |
95 | if (estack_ax(stack, top)->u.s.literal_type == ESTACK_STRING_LITERAL_TYPE_STAR_GLOB) { | |
96 | pattern_reg = estack_ax(stack, top); | |
97 | candidate_reg = estack_bx(stack, top); | |
98 | } else { | |
99 | pattern_reg = estack_bx(stack, top); | |
100 | candidate_reg = estack_ax(stack, top); | |
101 | } | |
102 | ||
103 | /* Perform the match operation. */ | |
104 | result = !strutils_star_glob_match_char_cb(get_char_at_cb, | |
105 | pattern_reg, get_char_at_cb, candidate_reg); | |
6f192a16 | 106 | if (has_user) |
02aca193 | 107 | pagefault_enable(); |
02aca193 PP |
108 | |
109 | return result; | |
110 | } | |
111 | ||
07dfc1d0 MD |
112 | static |
113 | int stack_strcmp(struct estack *stack, int top, const char *cmp_type) | |
114 | { | |
f127e61e MD |
115 | size_t offset_bx = 0, offset_ax = 0; |
116 | int diff, has_user = 0; | |
f127e61e MD |
117 | |
118 | if (estack_bx(stack, top)->u.s.user | |
119 | || estack_ax(stack, top)->u.s.user) { | |
120 | has_user = 1; | |
f127e61e MD |
121 | pagefault_disable(); |
122 | } | |
07dfc1d0 MD |
123 | |
124 | for (;;) { | |
f127e61e | 125 | int ret; |
07dfc1d0 | 126 | int escaped_r0 = 0; |
f127e61e | 127 | char char_bx, char_ax; |
07dfc1d0 | 128 | |
f127e61e MD |
129 | char_bx = get_char(estack_bx(stack, top), offset_bx); |
130 | char_ax = get_char(estack_ax(stack, top), offset_ax); | |
131 | ||
132 | if (unlikely(char_bx == '\0')) { | |
133 | if (char_ax == '\0') { | |
134 | diff = 0; | |
135 | break; | |
07dfc1d0 | 136 | } else { |
02aca193 PP |
137 | if (estack_ax(stack, top)->u.s.literal_type == |
138 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { | |
f127e61e MD |
139 | ret = parse_char(estack_ax(stack, top), |
140 | &char_ax, &offset_ax); | |
141 | if (ret == -1) { | |
142 | diff = 0; | |
143 | break; | |
144 | } | |
07dfc1d0 | 145 | } |
f127e61e MD |
146 | diff = -1; |
147 | break; | |
07dfc1d0 MD |
148 | } |
149 | } | |
f127e61e | 150 | if (unlikely(char_ax == '\0')) { |
02aca193 PP |
151 | if (estack_bx(stack, top)->u.s.literal_type == |
152 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { | |
abfd272b MD |
153 | ret = parse_char(estack_bx(stack, top), |
154 | &char_bx, &offset_bx); | |
155 | if (ret == -1) { | |
156 | diff = 0; | |
157 | break; | |
07dfc1d0 | 158 | } |
07dfc1d0 | 159 | } |
abfd272b MD |
160 | diff = 1; |
161 | break; | |
07dfc1d0 | 162 | } |
02aca193 PP |
163 | if (estack_bx(stack, top)->u.s.literal_type == |
164 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { | |
f127e61e MD |
165 | ret = parse_char(estack_bx(stack, top), |
166 | &char_bx, &offset_bx); | |
07dfc1d0 | 167 | if (ret == -1) { |
f127e61e MD |
168 | diff = 0; |
169 | break; | |
07dfc1d0 MD |
170 | } else if (ret == -2) { |
171 | escaped_r0 = 1; | |
172 | } | |
173 | /* else compare both char */ | |
174 | } | |
02aca193 PP |
175 | if (estack_ax(stack, top)->u.s.literal_type == |
176 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { | |
f127e61e MD |
177 | ret = parse_char(estack_ax(stack, top), |
178 | &char_ax, &offset_ax); | |
07dfc1d0 | 179 | if (ret == -1) { |
f127e61e MD |
180 | diff = 0; |
181 | break; | |
07dfc1d0 | 182 | } else if (ret == -2) { |
f127e61e MD |
183 | if (!escaped_r0) { |
184 | diff = -1; | |
185 | break; | |
186 | } | |
07dfc1d0 | 187 | } else { |
f127e61e MD |
188 | if (escaped_r0) { |
189 | diff = 1; | |
190 | break; | |
191 | } | |
07dfc1d0 MD |
192 | } |
193 | } else { | |
f127e61e MD |
194 | if (escaped_r0) { |
195 | diff = 1; | |
196 | break; | |
197 | } | |
07dfc1d0 | 198 | } |
f127e61e | 199 | diff = char_bx - char_ax; |
07dfc1d0 MD |
200 | if (diff != 0) |
201 | break; | |
f127e61e MD |
202 | offset_bx++; |
203 | offset_ax++; | |
204 | } | |
6f192a16 | 205 | if (has_user) |
f127e61e | 206 | pagefault_enable(); |
6f192a16 | 207 | |
07dfc1d0 MD |
208 | return diff; |
209 | } | |
210 | ||
80c2a69a | 211 | uint64_t lttng_bytecode_filter_interpret_false(void *filter_data, |
79150a49 | 212 | struct lttng_probe_ctx *lttng_probe_ctx, |
07dfc1d0 MD |
213 | const char *filter_stack_data) |
214 | { | |
80c2a69a | 215 | return LTTNG_INTERPRETER_DISCARD; |
07dfc1d0 MD |
216 | } |
217 | ||
99d223ad | 218 | uint64_t lttng_bytecode_capture_interpret_false(void *filter_data, |
99d223ad | 219 | const char *capture_stack_data, |
a775608d | 220 | struct lttng_probe_ctx *lttng_probe_ctx, |
99d223ad FD |
221 | struct lttng_interpreter_output *output) |
222 | { | |
223 | return LTTNG_INTERPRETER_DISCARD; | |
224 | } | |
225 | ||
07dfc1d0 MD |
226 | #ifdef INTERPRETER_USE_SWITCH |
227 | ||
228 | /* | |
229 | * Fallback for compilers that do not support taking address of labels. | |
230 | */ | |
231 | ||
232 | #define START_OP \ | |
233 | start_pc = &bytecode->data[0]; \ | |
234 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; \ | |
235 | pc = next_pc) { \ | |
5a15f70c | 236 | dbg_printk("LTTng: Executing op %s (%u)\n", \ |
80c2a69a FD |
237 | lttng_bytecode_print_op((unsigned int) *(bytecode_opcode_t *) pc), \ |
238 | (unsigned int) *(bytecode_opcode_t *) pc); \ | |
239 | switch (*(bytecode_opcode_t *) pc) { | |
07dfc1d0 MD |
240 | |
241 | #define OP(name) case name | |
242 | ||
243 | #define PO break | |
244 | ||
245 | #define END_OP } \ | |
246 | } | |
247 | ||
248 | #else | |
249 | ||
250 | /* | |
251 | * Dispatch-table based interpreter. | |
252 | */ | |
253 | ||
254 | #define START_OP \ | |
3834b99f | 255 | start_pc = &bytecode->code[0]; \ |
07dfc1d0 MD |
256 | pc = next_pc = start_pc; \ |
257 | if (unlikely(pc - start_pc >= bytecode->len)) \ | |
258 | goto end; \ | |
80c2a69a | 259 | goto *dispatch[*(bytecode_opcode_t *) pc]; |
07dfc1d0 MD |
260 | |
261 | #define OP(name) \ | |
262 | LABEL_##name | |
263 | ||
264 | #define PO \ | |
265 | pc = next_pc; \ | |
80c2a69a | 266 | goto *dispatch[*(bytecode_opcode_t *) pc]; |
07dfc1d0 MD |
267 | |
268 | #define END_OP | |
269 | ||
270 | #endif | |
271 | ||
1242217a FD |
272 | #define IS_INTEGER_REGISTER(reg_type) \ |
273 | (reg_type == REG_S64 || reg_type == REG_U64) | |
d644d1df | 274 | |
3834b99f MD |
275 | static int context_get_index(struct lttng_probe_ctx *lttng_probe_ctx, |
276 | struct load_ptr *ptr, | |
277 | uint32_t idx) | |
278 | { | |
279 | ||
437d5aa5 MD |
280 | struct lttng_kernel_ctx_field *ctx_field; |
281 | const struct lttng_kernel_event_field *field; | |
3834b99f MD |
282 | union lttng_ctx_value v; |
283 | ||
284 | ctx_field = <tng_static_ctx->fields[idx]; | |
437d5aa5 | 285 | field = ctx_field->event_field; |
3834b99f MD |
286 | ptr->type = LOAD_OBJECT; |
287 | /* field is only used for types nested within variants. */ | |
288 | ptr->field = NULL; | |
289 | ||
437d5aa5 | 290 | switch (field->type->type) { |
12bb2edb | 291 | case lttng_kernel_type_integer: |
3834b99f | 292 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); |
437d5aa5 | 293 | if (lttng_kernel_get_type_integer(field->type)->signedness) { |
3834b99f MD |
294 | ptr->object_type = OBJECT_TYPE_S64; |
295 | ptr->u.s64 = v.s64; | |
296 | ptr->ptr = &ptr->u.s64; | |
297 | } else { | |
298 | ptr->object_type = OBJECT_TYPE_U64; | |
299 | ptr->u.u64 = v.s64; /* Cast. */ | |
300 | ptr->ptr = &ptr->u.u64; | |
301 | } | |
302 | break; | |
437d5aa5 | 303 | case lttng_kernel_type_enum: |
3834b99f | 304 | { |
437d5aa5 MD |
305 | const struct lttng_kernel_type_enum *enum_type = lttng_kernel_get_type_enum(field->type); |
306 | const struct lttng_kernel_type_integer *integer_type = lttng_kernel_get_type_integer(enum_type->container_type); | |
3834b99f MD |
307 | |
308 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
437d5aa5 | 309 | if (integer_type->signedness) { |
29a574c3 | 310 | ptr->object_type = OBJECT_TYPE_SIGNED_ENUM; |
3834b99f MD |
311 | ptr->u.s64 = v.s64; |
312 | ptr->ptr = &ptr->u.s64; | |
313 | } else { | |
29a574c3 | 314 | ptr->object_type = OBJECT_TYPE_UNSIGNED_ENUM; |
3834b99f MD |
315 | ptr->u.u64 = v.s64; /* Cast. */ |
316 | ptr->ptr = &ptr->u.u64; | |
317 | } | |
318 | break; | |
319 | } | |
437d5aa5 MD |
320 | case lttng_kernel_type_array: |
321 | { | |
322 | const struct lttng_kernel_type_array *array_type = lttng_kernel_get_type_array(field->type); | |
323 | ||
324 | if (!lttng_kernel_type_is_bytewise_integer(array_type->elem_type)) { | |
80c2a69a | 325 | printk(KERN_WARNING "LTTng: bytecode: Array nesting only supports integer types.\n"); |
3834b99f MD |
326 | return -EINVAL; |
327 | } | |
437d5aa5 | 328 | if (array_type->encoding == lttng_kernel_string_encoding_none) { |
80c2a69a | 329 | printk(KERN_WARNING "LTTng: bytecode: Only string arrays are supported for contexts.\n"); |
3834b99f MD |
330 | return -EINVAL; |
331 | } | |
332 | ptr->object_type = OBJECT_TYPE_STRING; | |
333 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
334 | ptr->ptr = v.str; | |
335 | break; | |
437d5aa5 MD |
336 | } |
337 | case lttng_kernel_type_sequence: | |
338 | { | |
339 | const struct lttng_kernel_type_sequence *sequence_type = lttng_kernel_get_type_sequence(field->type); | |
340 | ||
341 | if (!lttng_kernel_type_is_bytewise_integer(sequence_type->elem_type)) { | |
80c2a69a | 342 | printk(KERN_WARNING "LTTng: bytecode: Sequence nesting only supports integer types.\n"); |
3834b99f MD |
343 | return -EINVAL; |
344 | } | |
437d5aa5 | 345 | if (sequence_type->encoding == lttng_kernel_string_encoding_none) { |
80c2a69a | 346 | printk(KERN_WARNING "LTTng: bytecode: Only string sequences are supported for contexts.\n"); |
3834b99f MD |
347 | return -EINVAL; |
348 | } | |
349 | ptr->object_type = OBJECT_TYPE_STRING; | |
350 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
351 | ptr->ptr = v.str; | |
352 | break; | |
437d5aa5 | 353 | } |
12bb2edb | 354 | case lttng_kernel_type_string: |
3834b99f MD |
355 | ptr->object_type = OBJECT_TYPE_STRING; |
356 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
357 | ptr->ptr = v.str; | |
358 | break; | |
437d5aa5 | 359 | case lttng_kernel_type_struct: |
80c2a69a | 360 | printk(KERN_WARNING "LTTng: bytecode: Structure type cannot be loaded.\n"); |
3834b99f | 361 | return -EINVAL; |
437d5aa5 | 362 | case lttng_kernel_type_variant: |
80c2a69a | 363 | printk(KERN_WARNING "LTTng: bytecode: Variant type cannot be loaded.\n"); |
ceabb767 | 364 | return -EINVAL; |
3834b99f | 365 | default: |
437d5aa5 | 366 | printk(KERN_WARNING "LTTng: bytecode: Unknown type: %d", (int) field->type->type); |
3834b99f MD |
367 | return -EINVAL; |
368 | } | |
369 | return 0; | |
370 | } | |
371 | ||
372 | static int dynamic_get_index(struct lttng_probe_ctx *lttng_probe_ctx, | |
373 | struct bytecode_runtime *runtime, | |
374 | uint64_t index, struct estack_entry *stack_top) | |
375 | { | |
376 | int ret; | |
80c2a69a | 377 | const struct bytecode_get_index_data *gid; |
3834b99f | 378 | |
80c2a69a | 379 | gid = (const struct bytecode_get_index_data *) &runtime->data[index]; |
3834b99f MD |
380 | switch (stack_top->u.ptr.type) { |
381 | case LOAD_OBJECT: | |
382 | switch (stack_top->u.ptr.object_type) { | |
383 | case OBJECT_TYPE_ARRAY: | |
384 | { | |
385 | const char *ptr; | |
386 | ||
387 | WARN_ON_ONCE(gid->offset >= gid->array_len); | |
388 | /* Skip count (unsigned long) */ | |
389 | ptr = *(const char **) (stack_top->u.ptr.ptr + sizeof(unsigned long)); | |
390 | ptr = ptr + gid->offset; | |
391 | stack_top->u.ptr.ptr = ptr; | |
392 | stack_top->u.ptr.object_type = gid->elem.type; | |
393 | stack_top->u.ptr.rev_bo = gid->elem.rev_bo; | |
437d5aa5 | 394 | BUG_ON(stack_top->u.ptr.field->type->type != lttng_kernel_type_array); |
3834b99f MD |
395 | stack_top->u.ptr.field = NULL; |
396 | break; | |
397 | } | |
398 | case OBJECT_TYPE_SEQUENCE: | |
399 | { | |
400 | const char *ptr; | |
401 | size_t ptr_seq_len; | |
402 | ||
403 | ptr = *(const char **) (stack_top->u.ptr.ptr + sizeof(unsigned long)); | |
404 | ptr_seq_len = *(unsigned long *) stack_top->u.ptr.ptr; | |
405 | if (gid->offset >= gid->elem.len * ptr_seq_len) { | |
406 | ret = -EINVAL; | |
407 | goto end; | |
408 | } | |
409 | ptr = ptr + gid->offset; | |
410 | stack_top->u.ptr.ptr = ptr; | |
411 | stack_top->u.ptr.object_type = gid->elem.type; | |
412 | stack_top->u.ptr.rev_bo = gid->elem.rev_bo; | |
437d5aa5 | 413 | BUG_ON(stack_top->u.ptr.field->type->type != lttng_kernel_type_sequence); |
3834b99f MD |
414 | stack_top->u.ptr.field = NULL; |
415 | break; | |
416 | } | |
417 | case OBJECT_TYPE_STRUCT: | |
80c2a69a | 418 | printk(KERN_WARNING "LTTng: bytecode: Nested structures are not supported yet.\n"); |
3834b99f MD |
419 | ret = -EINVAL; |
420 | goto end; | |
421 | case OBJECT_TYPE_VARIANT: | |
422 | default: | |
80c2a69a | 423 | printk(KERN_WARNING "LTTng: bytecode: Unexpected get index type %d", |
3834b99f MD |
424 | (int) stack_top->u.ptr.object_type); |
425 | ret = -EINVAL; | |
426 | goto end; | |
427 | } | |
428 | break; | |
429 | case LOAD_ROOT_CONTEXT: | |
430 | case LOAD_ROOT_APP_CONTEXT: /* Fall-through */ | |
431 | { | |
432 | ret = context_get_index(lttng_probe_ctx, | |
433 | &stack_top->u.ptr, | |
434 | gid->ctx_index); | |
435 | if (ret) { | |
436 | goto end; | |
437 | } | |
438 | break; | |
439 | } | |
440 | case LOAD_ROOT_PAYLOAD: | |
441 | stack_top->u.ptr.ptr += gid->offset; | |
442 | if (gid->elem.type == OBJECT_TYPE_STRING) | |
443 | stack_top->u.ptr.ptr = *(const char * const *) stack_top->u.ptr.ptr; | |
444 | stack_top->u.ptr.object_type = gid->elem.type; | |
445 | stack_top->u.ptr.type = LOAD_OBJECT; | |
03cb0cdd | 446 | stack_top->u.ptr.field = gid->field; |
60e8b0d6 | 447 | stack_top->u.ptr.rev_bo = gid->elem.rev_bo; |
3834b99f MD |
448 | break; |
449 | } | |
196e531f FD |
450 | |
451 | stack_top->type = REG_PTR; | |
452 | ||
3834b99f MD |
453 | return 0; |
454 | ||
455 | end: | |
456 | return ret; | |
457 | } | |
458 | ||
459 | static int dynamic_load_field(struct estack_entry *stack_top) | |
460 | { | |
461 | int ret; | |
462 | ||
463 | switch (stack_top->u.ptr.type) { | |
464 | case LOAD_OBJECT: | |
465 | break; | |
466 | case LOAD_ROOT_CONTEXT: | |
467 | case LOAD_ROOT_APP_CONTEXT: | |
468 | case LOAD_ROOT_PAYLOAD: | |
469 | default: | |
80c2a69a | 470 | dbg_printk("Bytecode warning: cannot load root, missing field name.\n"); |
3834b99f MD |
471 | ret = -EINVAL; |
472 | goto end; | |
473 | } | |
474 | switch (stack_top->u.ptr.object_type) { | |
475 | case OBJECT_TYPE_S8: | |
476 | dbg_printk("op load field s8\n"); | |
477 | stack_top->u.v = *(int8_t *) stack_top->u.ptr.ptr; | |
d644d1df | 478 | stack_top->type = REG_S64; |
3834b99f MD |
479 | break; |
480 | case OBJECT_TYPE_S16: | |
481 | { | |
482 | int16_t tmp; | |
483 | ||
484 | dbg_printk("op load field s16\n"); | |
485 | tmp = *(int16_t *) stack_top->u.ptr.ptr; | |
486 | if (stack_top->u.ptr.rev_bo) | |
487 | __swab16s(&tmp); | |
488 | stack_top->u.v = tmp; | |
d644d1df | 489 | stack_top->type = REG_S64; |
3834b99f MD |
490 | break; |
491 | } | |
492 | case OBJECT_TYPE_S32: | |
493 | { | |
494 | int32_t tmp; | |
495 | ||
496 | dbg_printk("op load field s32\n"); | |
497 | tmp = *(int32_t *) stack_top->u.ptr.ptr; | |
498 | if (stack_top->u.ptr.rev_bo) | |
499 | __swab32s(&tmp); | |
500 | stack_top->u.v = tmp; | |
d644d1df | 501 | stack_top->type = REG_S64; |
3834b99f MD |
502 | break; |
503 | } | |
504 | case OBJECT_TYPE_S64: | |
505 | { | |
506 | int64_t tmp; | |
507 | ||
508 | dbg_printk("op load field s64\n"); | |
509 | tmp = *(int64_t *) stack_top->u.ptr.ptr; | |
510 | if (stack_top->u.ptr.rev_bo) | |
511 | __swab64s(&tmp); | |
512 | stack_top->u.v = tmp; | |
d644d1df | 513 | stack_top->type = REG_S64; |
3834b99f MD |
514 | break; |
515 | } | |
29a574c3 FD |
516 | case OBJECT_TYPE_SIGNED_ENUM: |
517 | { | |
518 | int64_t tmp; | |
519 | ||
520 | dbg_printk("op load field signed enumeration\n"); | |
521 | tmp = *(int64_t *) stack_top->u.ptr.ptr; | |
522 | if (stack_top->u.ptr.rev_bo) | |
523 | __swab64s(&tmp); | |
524 | stack_top->u.v = tmp; | |
525 | stack_top->type = REG_S64; | |
526 | break; | |
527 | } | |
3834b99f MD |
528 | case OBJECT_TYPE_U8: |
529 | dbg_printk("op load field u8\n"); | |
530 | stack_top->u.v = *(uint8_t *) stack_top->u.ptr.ptr; | |
1242217a | 531 | stack_top->type = REG_U64; |
3834b99f MD |
532 | break; |
533 | case OBJECT_TYPE_U16: | |
534 | { | |
535 | uint16_t tmp; | |
536 | ||
5fae98f7 | 537 | dbg_printk("op load field u16\n"); |
3834b99f MD |
538 | tmp = *(uint16_t *) stack_top->u.ptr.ptr; |
539 | if (stack_top->u.ptr.rev_bo) | |
540 | __swab16s(&tmp); | |
541 | stack_top->u.v = tmp; | |
1242217a | 542 | stack_top->type = REG_U64; |
3834b99f MD |
543 | break; |
544 | } | |
545 | case OBJECT_TYPE_U32: | |
546 | { | |
547 | uint32_t tmp; | |
548 | ||
549 | dbg_printk("op load field u32\n"); | |
550 | tmp = *(uint32_t *) stack_top->u.ptr.ptr; | |
551 | if (stack_top->u.ptr.rev_bo) | |
552 | __swab32s(&tmp); | |
553 | stack_top->u.v = tmp; | |
1242217a | 554 | stack_top->type = REG_U64; |
3834b99f MD |
555 | break; |
556 | } | |
557 | case OBJECT_TYPE_U64: | |
558 | { | |
559 | uint64_t tmp; | |
560 | ||
561 | dbg_printk("op load field u64\n"); | |
562 | tmp = *(uint64_t *) stack_top->u.ptr.ptr; | |
563 | if (stack_top->u.ptr.rev_bo) | |
564 | __swab64s(&tmp); | |
565 | stack_top->u.v = tmp; | |
1242217a | 566 | stack_top->type = REG_U64; |
3834b99f MD |
567 | break; |
568 | } | |
29a574c3 FD |
569 | case OBJECT_TYPE_UNSIGNED_ENUM: |
570 | { | |
571 | uint64_t tmp; | |
572 | ||
573 | dbg_printk("op load field unsigned enumeration\n"); | |
574 | tmp = *(uint64_t *) stack_top->u.ptr.ptr; | |
575 | if (stack_top->u.ptr.rev_bo) | |
576 | __swab64s(&tmp); | |
577 | stack_top->u.v = tmp; | |
578 | stack_top->type = REG_U64; | |
579 | break; | |
580 | } | |
3834b99f MD |
581 | case OBJECT_TYPE_STRING: |
582 | { | |
583 | const char *str; | |
584 | ||
585 | dbg_printk("op load field string\n"); | |
586 | str = (const char *) stack_top->u.ptr.ptr; | |
587 | stack_top->u.s.str = str; | |
588 | if (unlikely(!stack_top->u.s.str)) { | |
80c2a69a | 589 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
3834b99f MD |
590 | ret = -EINVAL; |
591 | goto end; | |
592 | } | |
4efe037b | 593 | stack_top->u.s.seq_len = LTTNG_SIZE_MAX; |
3834b99f MD |
594 | stack_top->u.s.literal_type = |
595 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 596 | stack_top->type = REG_STRING; |
3834b99f MD |
597 | break; |
598 | } | |
599 | case OBJECT_TYPE_STRING_SEQUENCE: | |
600 | { | |
601 | const char *ptr; | |
602 | ||
603 | dbg_printk("op load field string sequence\n"); | |
604 | ptr = stack_top->u.ptr.ptr; | |
605 | stack_top->u.s.seq_len = *(unsigned long *) ptr; | |
606 | stack_top->u.s.str = *(const char **) (ptr + sizeof(unsigned long)); | |
607 | if (unlikely(!stack_top->u.s.str)) { | |
80c2a69a | 608 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
3834b99f MD |
609 | ret = -EINVAL; |
610 | goto end; | |
611 | } | |
612 | stack_top->u.s.literal_type = | |
613 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 614 | stack_top->type = REG_STRING; |
3834b99f MD |
615 | break; |
616 | } | |
617 | case OBJECT_TYPE_DYNAMIC: | |
618 | /* | |
619 | * Dynamic types in context are looked up | |
620 | * by context get index. | |
621 | */ | |
622 | ret = -EINVAL; | |
623 | goto end; | |
624 | case OBJECT_TYPE_DOUBLE: | |
625 | ret = -EINVAL; | |
626 | goto end; | |
627 | case OBJECT_TYPE_SEQUENCE: | |
628 | case OBJECT_TYPE_ARRAY: | |
629 | case OBJECT_TYPE_STRUCT: | |
630 | case OBJECT_TYPE_VARIANT: | |
80c2a69a | 631 | printk(KERN_WARNING "LTTng: bytecode: Sequences, arrays, struct and variant cannot be loaded (nested types).\n"); |
3834b99f MD |
632 | ret = -EINVAL; |
633 | goto end; | |
634 | } | |
635 | return 0; | |
636 | ||
637 | end: | |
638 | return ret; | |
639 | } | |
640 | ||
03cb0cdd FD |
641 | static |
642 | int lttng_bytecode_interpret_format_output(struct estack_entry *ax, | |
643 | struct lttng_interpreter_output *output) | |
644 | { | |
645 | int ret; | |
646 | ||
647 | again: | |
648 | switch (ax->type) { | |
649 | case REG_S64: | |
650 | output->type = LTTNG_INTERPRETER_TYPE_S64; | |
651 | output->u.s = ax->u.v; | |
652 | break; | |
653 | case REG_U64: | |
654 | output->type = LTTNG_INTERPRETER_TYPE_U64; | |
655 | output->u.u = (uint64_t) ax->u.v; | |
656 | break; | |
657 | case REG_STRING: | |
658 | output->type = LTTNG_INTERPRETER_TYPE_STRING; | |
659 | output->u.str.str = ax->u.s.str; | |
660 | output->u.str.len = ax->u.s.seq_len; | |
661 | break; | |
662 | case REG_PTR: | |
663 | switch (ax->u.ptr.object_type) { | |
664 | case OBJECT_TYPE_S8: | |
665 | case OBJECT_TYPE_S16: | |
666 | case OBJECT_TYPE_S32: | |
667 | case OBJECT_TYPE_S64: | |
668 | case OBJECT_TYPE_U8: | |
669 | case OBJECT_TYPE_U16: | |
670 | case OBJECT_TYPE_U32: | |
671 | case OBJECT_TYPE_U64: | |
672 | case OBJECT_TYPE_DOUBLE: | |
673 | case OBJECT_TYPE_STRING: | |
674 | case OBJECT_TYPE_STRING_SEQUENCE: | |
675 | ret = dynamic_load_field(ax); | |
676 | if (ret) | |
677 | return ret; | |
678 | /* Retry after loading ptr into stack top. */ | |
679 | goto again; | |
680 | case OBJECT_TYPE_SEQUENCE: | |
681 | output->type = LTTNG_INTERPRETER_TYPE_SEQUENCE; | |
682 | output->u.sequence.ptr = *(const char **) (ax->u.ptr.ptr + sizeof(unsigned long)); | |
683 | output->u.sequence.nr_elem = *(unsigned long *) ax->u.ptr.ptr; | |
437d5aa5 | 684 | output->u.sequence.nested_type = lttng_kernel_get_type_sequence(ax->u.ptr.field->type)->elem_type; |
03cb0cdd FD |
685 | break; |
686 | case OBJECT_TYPE_ARRAY: | |
687 | /* Skip count (unsigned long) */ | |
688 | output->type = LTTNG_INTERPRETER_TYPE_SEQUENCE; | |
689 | output->u.sequence.ptr = *(const char **) (ax->u.ptr.ptr + sizeof(unsigned long)); | |
437d5aa5 MD |
690 | output->u.sequence.nr_elem = lttng_kernel_get_type_array(ax->u.ptr.field->type)->length; |
691 | output->u.sequence.nested_type = lttng_kernel_get_type_array(ax->u.ptr.field->type)->elem_type; | |
03cb0cdd | 692 | break; |
29a574c3 FD |
693 | case OBJECT_TYPE_SIGNED_ENUM: |
694 | ret = dynamic_load_field(ax); | |
695 | if (ret) | |
696 | return ret; | |
697 | output->type = LTTNG_INTERPRETER_TYPE_SIGNED_ENUM; | |
698 | output->u.s = ax->u.v; | |
699 | break; | |
700 | case OBJECT_TYPE_UNSIGNED_ENUM: | |
701 | ret = dynamic_load_field(ax); | |
702 | if (ret) | |
703 | return ret; | |
704 | output->type = LTTNG_INTERPRETER_TYPE_UNSIGNED_ENUM; | |
705 | output->u.u = ax->u.v; | |
706 | break; | |
03cb0cdd FD |
707 | case OBJECT_TYPE_STRUCT: |
708 | case OBJECT_TYPE_VARIANT: | |
709 | default: | |
710 | return -EINVAL; | |
711 | } | |
712 | ||
713 | break; | |
714 | case REG_STAR_GLOB_STRING: | |
715 | case REG_TYPE_UNKNOWN: | |
716 | default: | |
717 | return -EINVAL; | |
718 | } | |
719 | ||
80c2a69a | 720 | return LTTNG_INTERPRETER_RECORD_FLAG; |
03cb0cdd FD |
721 | } |
722 | ||
acbe9250 JG |
723 | #ifdef DEBUG |
724 | ||
725 | #define DBG_USER_STR_CUTOFF 32 | |
726 | ||
727 | /* | |
728 | * In debug mode, print user string (truncated, if necessary). | |
729 | */ | |
730 | static inline | |
731 | void dbg_load_ref_user_str_printk(const struct estack_entry *user_str_reg) | |
732 | { | |
733 | size_t pos = 0; | |
734 | char last_char; | |
735 | char user_str[DBG_USER_STR_CUTOFF]; | |
736 | ||
737 | pagefault_disable(); | |
738 | do { | |
739 | last_char = get_char(user_str_reg, pos); | |
740 | user_str[pos] = last_char; | |
741 | pos++; | |
742 | } while (last_char != '\0' && pos < sizeof(user_str)); | |
743 | pagefault_enable(); | |
744 | ||
745 | user_str[sizeof(user_str) - 1] = '\0'; | |
746 | dbg_printk("load field ref user string: '%s%s'\n", user_str, | |
747 | last_char != '\0' ? "[...]" : ""); | |
748 | } | |
749 | #else | |
750 | static inline | |
751 | void dbg_load_ref_user_str_printk(const struct estack_entry *user_str_reg) | |
752 | { | |
753 | } | |
754 | #endif | |
755 | ||
07dfc1d0 MD |
756 | /* |
757 | * Return 0 (discard), or raise the 0x1 flag (log event). | |
758 | * Currently, other flags are kept for future extensions and have no | |
759 | * effect. | |
760 | */ | |
03cb0cdd FD |
761 | static |
762 | uint64_t bytecode_interpret(void *interpreter_data, | |
03cb0cdd | 763 | const char *interpreter_stack_data, |
a775608d | 764 | struct lttng_probe_ctx *lttng_probe_ctx, |
03cb0cdd | 765 | struct lttng_interpreter_output *output) |
07dfc1d0 | 766 | { |
03cb0cdd | 767 | struct bytecode_runtime *bytecode = interpreter_data; |
07dfc1d0 MD |
768 | void *pc, *next_pc, *start_pc; |
769 | int ret = -EINVAL; | |
770 | uint64_t retval = 0; | |
771 | struct estack _stack; | |
772 | struct estack *stack = &_stack; | |
773 | register int64_t ax = 0, bx = 0; | |
d644d1df | 774 | register enum entry_type ax_t = REG_TYPE_UNKNOWN, bx_t = REG_TYPE_UNKNOWN; |
80c2a69a | 775 | register int top = INTERPRETER_STACK_EMPTY; |
07dfc1d0 | 776 | #ifndef INTERPRETER_USE_SWITCH |
80c2a69a FD |
777 | static void *dispatch[NR_BYTECODE_OPS] = { |
778 | [ BYTECODE_OP_UNKNOWN ] = &&LABEL_BYTECODE_OP_UNKNOWN, | |
07dfc1d0 | 779 | |
80c2a69a | 780 | [ BYTECODE_OP_RETURN ] = &&LABEL_BYTECODE_OP_RETURN, |
07dfc1d0 MD |
781 | |
782 | /* binary */ | |
80c2a69a FD |
783 | [ BYTECODE_OP_MUL ] = &&LABEL_BYTECODE_OP_MUL, |
784 | [ BYTECODE_OP_DIV ] = &&LABEL_BYTECODE_OP_DIV, | |
785 | [ BYTECODE_OP_MOD ] = &&LABEL_BYTECODE_OP_MOD, | |
786 | [ BYTECODE_OP_PLUS ] = &&LABEL_BYTECODE_OP_PLUS, | |
787 | [ BYTECODE_OP_MINUS ] = &&LABEL_BYTECODE_OP_MINUS, | |
788 | [ BYTECODE_OP_BIT_RSHIFT ] = &&LABEL_BYTECODE_OP_BIT_RSHIFT, | |
789 | [ BYTECODE_OP_BIT_LSHIFT ] = &&LABEL_BYTECODE_OP_BIT_LSHIFT, | |
790 | [ BYTECODE_OP_BIT_AND ] = &&LABEL_BYTECODE_OP_BIT_AND, | |
791 | [ BYTECODE_OP_BIT_OR ] = &&LABEL_BYTECODE_OP_BIT_OR, | |
792 | [ BYTECODE_OP_BIT_XOR ] = &&LABEL_BYTECODE_OP_BIT_XOR, | |
07dfc1d0 MD |
793 | |
794 | /* binary comparators */ | |
80c2a69a FD |
795 | [ BYTECODE_OP_EQ ] = &&LABEL_BYTECODE_OP_EQ, |
796 | [ BYTECODE_OP_NE ] = &&LABEL_BYTECODE_OP_NE, | |
797 | [ BYTECODE_OP_GT ] = &&LABEL_BYTECODE_OP_GT, | |
798 | [ BYTECODE_OP_LT ] = &&LABEL_BYTECODE_OP_LT, | |
799 | [ BYTECODE_OP_GE ] = &&LABEL_BYTECODE_OP_GE, | |
800 | [ BYTECODE_OP_LE ] = &&LABEL_BYTECODE_OP_LE, | |
07dfc1d0 MD |
801 | |
802 | /* string binary comparator */ | |
80c2a69a FD |
803 | [ BYTECODE_OP_EQ_STRING ] = &&LABEL_BYTECODE_OP_EQ_STRING, |
804 | [ BYTECODE_OP_NE_STRING ] = &&LABEL_BYTECODE_OP_NE_STRING, | |
805 | [ BYTECODE_OP_GT_STRING ] = &&LABEL_BYTECODE_OP_GT_STRING, | |
806 | [ BYTECODE_OP_LT_STRING ] = &&LABEL_BYTECODE_OP_LT_STRING, | |
807 | [ BYTECODE_OP_GE_STRING ] = &&LABEL_BYTECODE_OP_GE_STRING, | |
808 | [ BYTECODE_OP_LE_STRING ] = &&LABEL_BYTECODE_OP_LE_STRING, | |
07dfc1d0 | 809 | |
02aca193 | 810 | /* globbing pattern binary comparator */ |
80c2a69a FD |
811 | [ BYTECODE_OP_EQ_STAR_GLOB_STRING ] = &&LABEL_BYTECODE_OP_EQ_STAR_GLOB_STRING, |
812 | [ BYTECODE_OP_NE_STAR_GLOB_STRING ] = &&LABEL_BYTECODE_OP_NE_STAR_GLOB_STRING, | |
02aca193 | 813 | |
07dfc1d0 | 814 | /* s64 binary comparator */ |
80c2a69a FD |
815 | [ BYTECODE_OP_EQ_S64 ] = &&LABEL_BYTECODE_OP_EQ_S64, |
816 | [ BYTECODE_OP_NE_S64 ] = &&LABEL_BYTECODE_OP_NE_S64, | |
817 | [ BYTECODE_OP_GT_S64 ] = &&LABEL_BYTECODE_OP_GT_S64, | |
818 | [ BYTECODE_OP_LT_S64 ] = &&LABEL_BYTECODE_OP_LT_S64, | |
819 | [ BYTECODE_OP_GE_S64 ] = &&LABEL_BYTECODE_OP_GE_S64, | |
820 | [ BYTECODE_OP_LE_S64 ] = &&LABEL_BYTECODE_OP_LE_S64, | |
07dfc1d0 MD |
821 | |
822 | /* double binary comparator */ | |
80c2a69a FD |
823 | [ BYTECODE_OP_EQ_DOUBLE ] = &&LABEL_BYTECODE_OP_EQ_DOUBLE, |
824 | [ BYTECODE_OP_NE_DOUBLE ] = &&LABEL_BYTECODE_OP_NE_DOUBLE, | |
825 | [ BYTECODE_OP_GT_DOUBLE ] = &&LABEL_BYTECODE_OP_GT_DOUBLE, | |
826 | [ BYTECODE_OP_LT_DOUBLE ] = &&LABEL_BYTECODE_OP_LT_DOUBLE, | |
827 | [ BYTECODE_OP_GE_DOUBLE ] = &&LABEL_BYTECODE_OP_GE_DOUBLE, | |
828 | [ BYTECODE_OP_LE_DOUBLE ] = &&LABEL_BYTECODE_OP_LE_DOUBLE, | |
07dfc1d0 MD |
829 | |
830 | /* Mixed S64-double binary comparators */ | |
80c2a69a FD |
831 | [ BYTECODE_OP_EQ_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_EQ_DOUBLE_S64, |
832 | [ BYTECODE_OP_NE_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_NE_DOUBLE_S64, | |
833 | [ BYTECODE_OP_GT_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_GT_DOUBLE_S64, | |
834 | [ BYTECODE_OP_LT_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_LT_DOUBLE_S64, | |
835 | [ BYTECODE_OP_GE_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_GE_DOUBLE_S64, | |
836 | [ BYTECODE_OP_LE_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_LE_DOUBLE_S64, | |
837 | ||
838 | [ BYTECODE_OP_EQ_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_EQ_S64_DOUBLE, | |
839 | [ BYTECODE_OP_NE_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_NE_S64_DOUBLE, | |
840 | [ BYTECODE_OP_GT_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_GT_S64_DOUBLE, | |
841 | [ BYTECODE_OP_LT_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_LT_S64_DOUBLE, | |
842 | [ BYTECODE_OP_GE_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_GE_S64_DOUBLE, | |
843 | [ BYTECODE_OP_LE_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_LE_S64_DOUBLE, | |
07dfc1d0 MD |
844 | |
845 | /* unary */ | |
80c2a69a FD |
846 | [ BYTECODE_OP_UNARY_PLUS ] = &&LABEL_BYTECODE_OP_UNARY_PLUS, |
847 | [ BYTECODE_OP_UNARY_MINUS ] = &&LABEL_BYTECODE_OP_UNARY_MINUS, | |
848 | [ BYTECODE_OP_UNARY_NOT ] = &&LABEL_BYTECODE_OP_UNARY_NOT, | |
849 | [ BYTECODE_OP_UNARY_PLUS_S64 ] = &&LABEL_BYTECODE_OP_UNARY_PLUS_S64, | |
850 | [ BYTECODE_OP_UNARY_MINUS_S64 ] = &&LABEL_BYTECODE_OP_UNARY_MINUS_S64, | |
851 | [ BYTECODE_OP_UNARY_NOT_S64 ] = &&LABEL_BYTECODE_OP_UNARY_NOT_S64, | |
852 | [ BYTECODE_OP_UNARY_PLUS_DOUBLE ] = &&LABEL_BYTECODE_OP_UNARY_PLUS_DOUBLE, | |
853 | [ BYTECODE_OP_UNARY_MINUS_DOUBLE ] = &&LABEL_BYTECODE_OP_UNARY_MINUS_DOUBLE, | |
854 | [ BYTECODE_OP_UNARY_NOT_DOUBLE ] = &&LABEL_BYTECODE_OP_UNARY_NOT_DOUBLE, | |
07dfc1d0 MD |
855 | |
856 | /* logical */ | |
80c2a69a FD |
857 | [ BYTECODE_OP_AND ] = &&LABEL_BYTECODE_OP_AND, |
858 | [ BYTECODE_OP_OR ] = &&LABEL_BYTECODE_OP_OR, | |
07dfc1d0 MD |
859 | |
860 | /* load field ref */ | |
80c2a69a FD |
861 | [ BYTECODE_OP_LOAD_FIELD_REF ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF, |
862 | [ BYTECODE_OP_LOAD_FIELD_REF_STRING ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_STRING, | |
863 | [ BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE, | |
864 | [ BYTECODE_OP_LOAD_FIELD_REF_S64 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_S64, | |
865 | [ BYTECODE_OP_LOAD_FIELD_REF_DOUBLE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_DOUBLE, | |
07dfc1d0 MD |
866 | |
867 | /* load from immediate operand */ | |
80c2a69a FD |
868 | [ BYTECODE_OP_LOAD_STRING ] = &&LABEL_BYTECODE_OP_LOAD_STRING, |
869 | [ BYTECODE_OP_LOAD_STAR_GLOB_STRING ] = &&LABEL_BYTECODE_OP_LOAD_STAR_GLOB_STRING, | |
870 | [ BYTECODE_OP_LOAD_S64 ] = &&LABEL_BYTECODE_OP_LOAD_S64, | |
871 | [ BYTECODE_OP_LOAD_DOUBLE ] = &&LABEL_BYTECODE_OP_LOAD_DOUBLE, | |
07dfc1d0 MD |
872 | |
873 | /* cast */ | |
80c2a69a FD |
874 | [ BYTECODE_OP_CAST_TO_S64 ] = &&LABEL_BYTECODE_OP_CAST_TO_S64, |
875 | [ BYTECODE_OP_CAST_DOUBLE_TO_S64 ] = &&LABEL_BYTECODE_OP_CAST_DOUBLE_TO_S64, | |
876 | [ BYTECODE_OP_CAST_NOP ] = &&LABEL_BYTECODE_OP_CAST_NOP, | |
07dfc1d0 MD |
877 | |
878 | /* get context ref */ | |
80c2a69a FD |
879 | [ BYTECODE_OP_GET_CONTEXT_REF ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF, |
880 | [ BYTECODE_OP_GET_CONTEXT_REF_STRING ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF_STRING, | |
881 | [ BYTECODE_OP_GET_CONTEXT_REF_S64 ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF_S64, | |
882 | [ BYTECODE_OP_GET_CONTEXT_REF_DOUBLE ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF_DOUBLE, | |
f127e61e MD |
883 | |
884 | /* load userspace field ref */ | |
80c2a69a FD |
885 | [ BYTECODE_OP_LOAD_FIELD_REF_USER_STRING ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_USER_STRING, |
886 | [ BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE, | |
3834b99f MD |
887 | |
888 | /* Instructions for recursive traversal through composed types. */ | |
80c2a69a FD |
889 | [ BYTECODE_OP_GET_CONTEXT_ROOT ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_ROOT, |
890 | [ BYTECODE_OP_GET_APP_CONTEXT_ROOT ] = &&LABEL_BYTECODE_OP_GET_APP_CONTEXT_ROOT, | |
891 | [ BYTECODE_OP_GET_PAYLOAD_ROOT ] = &&LABEL_BYTECODE_OP_GET_PAYLOAD_ROOT, | |
892 | ||
893 | [ BYTECODE_OP_GET_SYMBOL ] = &&LABEL_BYTECODE_OP_GET_SYMBOL, | |
894 | [ BYTECODE_OP_GET_SYMBOL_FIELD ] = &&LABEL_BYTECODE_OP_GET_SYMBOL_FIELD, | |
895 | [ BYTECODE_OP_GET_INDEX_U16 ] = &&LABEL_BYTECODE_OP_GET_INDEX_U16, | |
896 | [ BYTECODE_OP_GET_INDEX_U64 ] = &&LABEL_BYTECODE_OP_GET_INDEX_U64, | |
897 | ||
898 | [ BYTECODE_OP_LOAD_FIELD ] = &&LABEL_BYTECODE_OP_LOAD_FIELD, | |
899 | [ BYTECODE_OP_LOAD_FIELD_S8 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S8, | |
900 | [ BYTECODE_OP_LOAD_FIELD_S16 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S16, | |
901 | [ BYTECODE_OP_LOAD_FIELD_S32 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S32, | |
902 | [ BYTECODE_OP_LOAD_FIELD_S64 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S64, | |
903 | [ BYTECODE_OP_LOAD_FIELD_U8 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U8, | |
904 | [ BYTECODE_OP_LOAD_FIELD_U16 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U16, | |
905 | [ BYTECODE_OP_LOAD_FIELD_U32 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U32, | |
906 | [ BYTECODE_OP_LOAD_FIELD_U64 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U64, | |
907 | [ BYTECODE_OP_LOAD_FIELD_STRING ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_STRING, | |
908 | [ BYTECODE_OP_LOAD_FIELD_SEQUENCE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_SEQUENCE, | |
909 | [ BYTECODE_OP_LOAD_FIELD_DOUBLE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_DOUBLE, | |
910 | ||
911 | [ BYTECODE_OP_UNARY_BIT_NOT ] = &&LABEL_BYTECODE_OP_UNARY_BIT_NOT, | |
912 | ||
913 | [ BYTECODE_OP_RETURN_S64 ] = &&LABEL_BYTECODE_OP_RETURN_S64, | |
07dfc1d0 MD |
914 | }; |
915 | #endif /* #ifndef INTERPRETER_USE_SWITCH */ | |
916 | ||
917 | START_OP | |
918 | ||
80c2a69a FD |
919 | OP(BYTECODE_OP_UNKNOWN): |
920 | OP(BYTECODE_OP_LOAD_FIELD_REF): | |
921 | OP(BYTECODE_OP_GET_CONTEXT_REF): | |
07dfc1d0 MD |
922 | #ifdef INTERPRETER_USE_SWITCH |
923 | default: | |
924 | #endif /* INTERPRETER_USE_SWITCH */ | |
80c2a69a FD |
925 | printk(KERN_WARNING "LTTng: bytecode: unknown bytecode op %u\n", |
926 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
927 | ret = -EINVAL; |
928 | goto end; | |
929 | ||
80c2a69a FD |
930 | OP(BYTECODE_OP_RETURN): |
931 | OP(BYTECODE_OP_RETURN_S64): | |
932 | /* LTTNG_INTERPRETER_DISCARD or LTTNG_INTERPRETER_RECORD_FLAG */ | |
d644d1df FD |
933 | switch (estack_ax_t) { |
934 | case REG_S64: | |
1242217a | 935 | case REG_U64: |
d644d1df FD |
936 | retval = !!estack_ax_v; |
937 | break; | |
938 | case REG_DOUBLE: | |
939 | case REG_STRING: | |
940 | case REG_PTR: | |
03cb0cdd FD |
941 | if (!output) { |
942 | ret = -EINVAL; | |
943 | goto end; | |
944 | } | |
945 | retval = 0; | |
946 | break; | |
d644d1df FD |
947 | case REG_STAR_GLOB_STRING: |
948 | case REG_TYPE_UNKNOWN: | |
949 | ret = -EINVAL; | |
950 | goto end; | |
951 | } | |
07dfc1d0 MD |
952 | ret = 0; |
953 | goto end; | |
954 | ||
955 | /* binary */ | |
80c2a69a FD |
956 | OP(BYTECODE_OP_MUL): |
957 | OP(BYTECODE_OP_DIV): | |
958 | OP(BYTECODE_OP_MOD): | |
959 | OP(BYTECODE_OP_PLUS): | |
960 | OP(BYTECODE_OP_MINUS): | |
961 | printk(KERN_WARNING "LTTng: bytecode: unsupported bytecode op %u\n", | |
962 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
963 | ret = -EINVAL; |
964 | goto end; | |
965 | ||
80c2a69a FD |
966 | OP(BYTECODE_OP_EQ): |
967 | OP(BYTECODE_OP_NE): | |
968 | OP(BYTECODE_OP_GT): | |
969 | OP(BYTECODE_OP_LT): | |
970 | OP(BYTECODE_OP_GE): | |
971 | OP(BYTECODE_OP_LE): | |
972 | printk(KERN_WARNING "LTTng: bytecode: unsupported non-specialized bytecode op %u\n", | |
973 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
974 | ret = -EINVAL; |
975 | goto end; | |
976 | ||
80c2a69a | 977 | OP(BYTECODE_OP_EQ_STRING): |
07dfc1d0 MD |
978 | { |
979 | int res; | |
980 | ||
981 | res = (stack_strcmp(stack, top, "==") == 0); | |
d644d1df | 982 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 983 | estack_ax_v = res; |
d644d1df | 984 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
985 | next_pc += sizeof(struct binary_op); |
986 | PO; | |
987 | } | |
80c2a69a | 988 | OP(BYTECODE_OP_NE_STRING): |
07dfc1d0 MD |
989 | { |
990 | int res; | |
991 | ||
992 | res = (stack_strcmp(stack, top, "!=") != 0); | |
d644d1df | 993 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 994 | estack_ax_v = res; |
d644d1df | 995 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
996 | next_pc += sizeof(struct binary_op); |
997 | PO; | |
998 | } | |
80c2a69a | 999 | OP(BYTECODE_OP_GT_STRING): |
07dfc1d0 MD |
1000 | { |
1001 | int res; | |
1002 | ||
1003 | res = (stack_strcmp(stack, top, ">") > 0); | |
d644d1df | 1004 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1005 | estack_ax_v = res; |
d644d1df | 1006 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1007 | next_pc += sizeof(struct binary_op); |
1008 | PO; | |
1009 | } | |
80c2a69a | 1010 | OP(BYTECODE_OP_LT_STRING): |
07dfc1d0 MD |
1011 | { |
1012 | int res; | |
1013 | ||
1014 | res = (stack_strcmp(stack, top, "<") < 0); | |
d644d1df | 1015 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1016 | estack_ax_v = res; |
d644d1df | 1017 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1018 | next_pc += sizeof(struct binary_op); |
1019 | PO; | |
1020 | } | |
80c2a69a | 1021 | OP(BYTECODE_OP_GE_STRING): |
07dfc1d0 MD |
1022 | { |
1023 | int res; | |
1024 | ||
1025 | res = (stack_strcmp(stack, top, ">=") >= 0); | |
d644d1df | 1026 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1027 | estack_ax_v = res; |
d644d1df | 1028 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1029 | next_pc += sizeof(struct binary_op); |
1030 | PO; | |
1031 | } | |
80c2a69a | 1032 | OP(BYTECODE_OP_LE_STRING): |
07dfc1d0 MD |
1033 | { |
1034 | int res; | |
1035 | ||
1036 | res = (stack_strcmp(stack, top, "<=") <= 0); | |
d644d1df | 1037 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1038 | estack_ax_v = res; |
d644d1df | 1039 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1040 | next_pc += sizeof(struct binary_op); |
1041 | PO; | |
1042 | } | |
1043 | ||
80c2a69a | 1044 | OP(BYTECODE_OP_EQ_STAR_GLOB_STRING): |
02aca193 PP |
1045 | { |
1046 | int res; | |
1047 | ||
1048 | res = (stack_star_glob_match(stack, top, "==") == 0); | |
d644d1df | 1049 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
02aca193 | 1050 | estack_ax_v = res; |
d644d1df | 1051 | estack_ax_t = REG_S64; |
02aca193 PP |
1052 | next_pc += sizeof(struct binary_op); |
1053 | PO; | |
1054 | } | |
80c2a69a | 1055 | OP(BYTECODE_OP_NE_STAR_GLOB_STRING): |
02aca193 PP |
1056 | { |
1057 | int res; | |
1058 | ||
1059 | res = (stack_star_glob_match(stack, top, "!=") != 0); | |
d644d1df | 1060 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
02aca193 | 1061 | estack_ax_v = res; |
d644d1df | 1062 | estack_ax_t = REG_S64; |
02aca193 PP |
1063 | next_pc += sizeof(struct binary_op); |
1064 | PO; | |
1065 | } | |
1066 | ||
80c2a69a | 1067 | OP(BYTECODE_OP_EQ_S64): |
07dfc1d0 MD |
1068 | { |
1069 | int res; | |
1070 | ||
1071 | res = (estack_bx_v == estack_ax_v); | |
d644d1df | 1072 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1073 | estack_ax_v = res; |
d644d1df | 1074 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1075 | next_pc += sizeof(struct binary_op); |
1076 | PO; | |
1077 | } | |
80c2a69a | 1078 | OP(BYTECODE_OP_NE_S64): |
07dfc1d0 MD |
1079 | { |
1080 | int res; | |
1081 | ||
1082 | res = (estack_bx_v != estack_ax_v); | |
d644d1df | 1083 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1084 | estack_ax_v = res; |
d644d1df | 1085 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1086 | next_pc += sizeof(struct binary_op); |
1087 | PO; | |
1088 | } | |
80c2a69a | 1089 | OP(BYTECODE_OP_GT_S64): |
07dfc1d0 MD |
1090 | { |
1091 | int res; | |
1092 | ||
1093 | res = (estack_bx_v > estack_ax_v); | |
d644d1df | 1094 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1095 | estack_ax_v = res; |
d644d1df | 1096 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1097 | next_pc += sizeof(struct binary_op); |
1098 | PO; | |
1099 | } | |
80c2a69a | 1100 | OP(BYTECODE_OP_LT_S64): |
07dfc1d0 MD |
1101 | { |
1102 | int res; | |
1103 | ||
1104 | res = (estack_bx_v < estack_ax_v); | |
d644d1df | 1105 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1106 | estack_ax_v = res; |
d644d1df | 1107 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1108 | next_pc += sizeof(struct binary_op); |
1109 | PO; | |
1110 | } | |
80c2a69a | 1111 | OP(BYTECODE_OP_GE_S64): |
07dfc1d0 MD |
1112 | { |
1113 | int res; | |
1114 | ||
1115 | res = (estack_bx_v >= estack_ax_v); | |
d644d1df | 1116 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1117 | estack_ax_v = res; |
d644d1df | 1118 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1119 | next_pc += sizeof(struct binary_op); |
1120 | PO; | |
1121 | } | |
80c2a69a | 1122 | OP(BYTECODE_OP_LE_S64): |
07dfc1d0 MD |
1123 | { |
1124 | int res; | |
1125 | ||
1126 | res = (estack_bx_v <= estack_ax_v); | |
d644d1df | 1127 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1128 | estack_ax_v = res; |
d644d1df | 1129 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1130 | next_pc += sizeof(struct binary_op); |
1131 | PO; | |
1132 | } | |
1133 | ||
80c2a69a FD |
1134 | OP(BYTECODE_OP_EQ_DOUBLE): |
1135 | OP(BYTECODE_OP_NE_DOUBLE): | |
1136 | OP(BYTECODE_OP_GT_DOUBLE): | |
1137 | OP(BYTECODE_OP_LT_DOUBLE): | |
1138 | OP(BYTECODE_OP_GE_DOUBLE): | |
1139 | OP(BYTECODE_OP_LE_DOUBLE): | |
07dfc1d0 MD |
1140 | { |
1141 | BUG_ON(1); | |
1142 | PO; | |
1143 | } | |
1144 | ||
1145 | /* Mixed S64-double binary comparators */ | |
80c2a69a FD |
1146 | OP(BYTECODE_OP_EQ_DOUBLE_S64): |
1147 | OP(BYTECODE_OP_NE_DOUBLE_S64): | |
1148 | OP(BYTECODE_OP_GT_DOUBLE_S64): | |
1149 | OP(BYTECODE_OP_LT_DOUBLE_S64): | |
1150 | OP(BYTECODE_OP_GE_DOUBLE_S64): | |
1151 | OP(BYTECODE_OP_LE_DOUBLE_S64): | |
1152 | OP(BYTECODE_OP_EQ_S64_DOUBLE): | |
1153 | OP(BYTECODE_OP_NE_S64_DOUBLE): | |
1154 | OP(BYTECODE_OP_GT_S64_DOUBLE): | |
1155 | OP(BYTECODE_OP_LT_S64_DOUBLE): | |
1156 | OP(BYTECODE_OP_GE_S64_DOUBLE): | |
1157 | OP(BYTECODE_OP_LE_S64_DOUBLE): | |
07dfc1d0 MD |
1158 | { |
1159 | BUG_ON(1); | |
1160 | PO; | |
1161 | } | |
80c2a69a | 1162 | OP(BYTECODE_OP_BIT_RSHIFT): |
e16c054b MD |
1163 | { |
1164 | int64_t res; | |
1165 | ||
d644d1df FD |
1166 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1167 | ret = -EINVAL; | |
1168 | goto end; | |
1169 | } | |
1170 | ||
ea13ec96 MD |
1171 | /* Catch undefined behavior. */ |
1172 | if (unlikely(estack_ax_v < 0 || estack_ax_v >= 64)) { | |
1173 | ret = -EINVAL; | |
1174 | goto end; | |
1175 | } | |
f8d42740 | 1176 | res = ((uint64_t) estack_bx_v >> (uint32_t) estack_ax_v); |
d644d1df | 1177 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
e16c054b | 1178 | estack_ax_v = res; |
1242217a | 1179 | estack_ax_t = REG_U64; |
e16c054b MD |
1180 | next_pc += sizeof(struct binary_op); |
1181 | PO; | |
1182 | } | |
80c2a69a | 1183 | OP(BYTECODE_OP_BIT_LSHIFT): |
e16c054b MD |
1184 | { |
1185 | int64_t res; | |
1186 | ||
d644d1df FD |
1187 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1188 | ret = -EINVAL; | |
1189 | goto end; | |
1190 | } | |
1191 | ||
ea13ec96 MD |
1192 | /* Catch undefined behavior. */ |
1193 | if (unlikely(estack_ax_v < 0 || estack_ax_v >= 64)) { | |
1194 | ret = -EINVAL; | |
1195 | goto end; | |
1196 | } | |
f8d42740 | 1197 | res = ((uint64_t) estack_bx_v << (uint32_t) estack_ax_v); |
d644d1df | 1198 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
e16c054b | 1199 | estack_ax_v = res; |
1242217a | 1200 | estack_ax_t = REG_U64; |
e16c054b MD |
1201 | next_pc += sizeof(struct binary_op); |
1202 | PO; | |
1203 | } | |
80c2a69a | 1204 | OP(BYTECODE_OP_BIT_AND): |
3834b99f MD |
1205 | { |
1206 | int64_t res; | |
1207 | ||
d644d1df FD |
1208 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1209 | ret = -EINVAL; | |
1210 | goto end; | |
1211 | } | |
1212 | ||
f8d42740 | 1213 | res = ((uint64_t) estack_bx_v & (uint64_t) estack_ax_v); |
d644d1df | 1214 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1215 | estack_ax_v = res; |
1242217a | 1216 | estack_ax_t = REG_U64; |
3834b99f MD |
1217 | next_pc += sizeof(struct binary_op); |
1218 | PO; | |
1219 | } | |
80c2a69a | 1220 | OP(BYTECODE_OP_BIT_OR): |
3834b99f MD |
1221 | { |
1222 | int64_t res; | |
1223 | ||
d644d1df FD |
1224 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1225 | ret = -EINVAL; | |
1226 | goto end; | |
1227 | } | |
1228 | ||
f8d42740 | 1229 | res = ((uint64_t) estack_bx_v | (uint64_t) estack_ax_v); |
d644d1df | 1230 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1231 | estack_ax_v = res; |
1242217a | 1232 | estack_ax_t = REG_U64; |
3834b99f MD |
1233 | next_pc += sizeof(struct binary_op); |
1234 | PO; | |
1235 | } | |
80c2a69a | 1236 | OP(BYTECODE_OP_BIT_XOR): |
3834b99f MD |
1237 | { |
1238 | int64_t res; | |
1239 | ||
d644d1df FD |
1240 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1241 | ret = -EINVAL; | |
1242 | goto end; | |
1243 | } | |
1244 | ||
f8d42740 | 1245 | res = ((uint64_t) estack_bx_v ^ (uint64_t) estack_ax_v); |
d644d1df | 1246 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1247 | estack_ax_v = res; |
1242217a | 1248 | estack_ax_t = REG_U64; |
3834b99f MD |
1249 | next_pc += sizeof(struct binary_op); |
1250 | PO; | |
1251 | } | |
07dfc1d0 MD |
1252 | |
1253 | /* unary */ | |
80c2a69a FD |
1254 | OP(BYTECODE_OP_UNARY_PLUS): |
1255 | OP(BYTECODE_OP_UNARY_MINUS): | |
1256 | OP(BYTECODE_OP_UNARY_NOT): | |
1257 | printk(KERN_WARNING "LTTng: bytecode: unsupported non-specialized bytecode op %u\n", | |
1258 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
1259 | ret = -EINVAL; |
1260 | goto end; | |
1261 | ||
1262 | ||
80c2a69a | 1263 | OP(BYTECODE_OP_UNARY_BIT_NOT): |
e16c054b | 1264 | { |
f8d42740 | 1265 | estack_ax_v = ~(uint64_t) estack_ax_v; |
d644d1df | 1266 | estack_ax_t = REG_S64; |
e16c054b MD |
1267 | next_pc += sizeof(struct unary_op); |
1268 | PO; | |
1269 | } | |
1270 | ||
80c2a69a | 1271 | OP(BYTECODE_OP_UNARY_PLUS_S64): |
07dfc1d0 MD |
1272 | { |
1273 | next_pc += sizeof(struct unary_op); | |
1274 | PO; | |
1275 | } | |
80c2a69a | 1276 | OP(BYTECODE_OP_UNARY_MINUS_S64): |
07dfc1d0 MD |
1277 | { |
1278 | estack_ax_v = -estack_ax_v; | |
d644d1df | 1279 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1280 | next_pc += sizeof(struct unary_op); |
1281 | PO; | |
1282 | } | |
80c2a69a FD |
1283 | OP(BYTECODE_OP_UNARY_PLUS_DOUBLE): |
1284 | OP(BYTECODE_OP_UNARY_MINUS_DOUBLE): | |
07dfc1d0 MD |
1285 | { |
1286 | BUG_ON(1); | |
1287 | PO; | |
1288 | } | |
80c2a69a | 1289 | OP(BYTECODE_OP_UNARY_NOT_S64): |
07dfc1d0 MD |
1290 | { |
1291 | estack_ax_v = !estack_ax_v; | |
d644d1df | 1292 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1293 | next_pc += sizeof(struct unary_op); |
1294 | PO; | |
1295 | } | |
80c2a69a | 1296 | OP(BYTECODE_OP_UNARY_NOT_DOUBLE): |
07dfc1d0 MD |
1297 | { |
1298 | BUG_ON(1); | |
1299 | PO; | |
1300 | } | |
1301 | ||
1302 | /* logical */ | |
80c2a69a | 1303 | OP(BYTECODE_OP_AND): |
07dfc1d0 MD |
1304 | { |
1305 | struct logical_op *insn = (struct logical_op *) pc; | |
1306 | ||
1307 | /* If AX is 0, skip and evaluate to 0 */ | |
1308 | if (unlikely(estack_ax_v == 0)) { | |
1309 | dbg_printk("Jumping to bytecode offset %u\n", | |
1310 | (unsigned int) insn->skip_offset); | |
1311 | next_pc = start_pc + insn->skip_offset; | |
1312 | } else { | |
1313 | /* Pop 1 when jump not taken */ | |
d644d1df | 1314 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 MD |
1315 | next_pc += sizeof(struct logical_op); |
1316 | } | |
1317 | PO; | |
1318 | } | |
80c2a69a | 1319 | OP(BYTECODE_OP_OR): |
07dfc1d0 MD |
1320 | { |
1321 | struct logical_op *insn = (struct logical_op *) pc; | |
1322 | ||
1323 | /* If AX is nonzero, skip and evaluate to 1 */ | |
1324 | ||
1325 | if (unlikely(estack_ax_v != 0)) { | |
1326 | estack_ax_v = 1; | |
1327 | dbg_printk("Jumping to bytecode offset %u\n", | |
1328 | (unsigned int) insn->skip_offset); | |
1329 | next_pc = start_pc + insn->skip_offset; | |
1330 | } else { | |
1331 | /* Pop 1 when jump not taken */ | |
d644d1df | 1332 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 MD |
1333 | next_pc += sizeof(struct logical_op); |
1334 | } | |
1335 | PO; | |
1336 | } | |
1337 | ||
1338 | ||
1339 | /* load field ref */ | |
80c2a69a | 1340 | OP(BYTECODE_OP_LOAD_FIELD_REF_STRING): |
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 string\n", | |
1346 | ref->offset); | |
d644d1df | 1347 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1348 | estack_ax(stack, top)->u.s.str = |
03cb0cdd | 1349 | *(const char * const *) &interpreter_stack_data[ref->offset]; |
07dfc1d0 | 1350 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
80c2a69a | 1351 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
07dfc1d0 MD |
1352 | ret = -EINVAL; |
1353 | goto end; | |
1354 | } | |
cbc19040 | 1355 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1356 | estack_ax(stack, top)->u.s.literal_type = |
1357 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1358 | estack_ax(stack, top)->u.s.user = 0; |
d644d1df | 1359 | estack_ax(stack, top)->type = REG_STRING; |
07dfc1d0 MD |
1360 | dbg_printk("ref load string %s\n", estack_ax(stack, top)->u.s.str); |
1361 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1362 | PO; | |
1363 | } | |
1364 | ||
80c2a69a | 1365 | OP(BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE): |
07dfc1d0 MD |
1366 | { |
1367 | struct load_op *insn = (struct load_op *) pc; | |
1368 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1369 | ||
1370 | dbg_printk("load field ref offset %u type sequence\n", | |
1371 | ref->offset); | |
d644d1df | 1372 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1373 | estack_ax(stack, top)->u.s.seq_len = |
03cb0cdd | 1374 | *(unsigned long *) &interpreter_stack_data[ref->offset]; |
07dfc1d0 | 1375 | estack_ax(stack, top)->u.s.str = |
03cb0cdd | 1376 | *(const char **) (&interpreter_stack_data[ref->offset |
07dfc1d0 MD |
1377 | + sizeof(unsigned long)]); |
1378 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1379 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
07dfc1d0 MD |
1380 | ret = -EINVAL; |
1381 | goto end; | |
1382 | } | |
02aca193 PP |
1383 | estack_ax(stack, top)->u.s.literal_type = |
1384 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1385 | estack_ax(stack, top)->u.s.user = 0; |
07dfc1d0 MD |
1386 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1387 | PO; | |
1388 | } | |
1389 | ||
80c2a69a | 1390 | OP(BYTECODE_OP_LOAD_FIELD_REF_S64): |
07dfc1d0 MD |
1391 | { |
1392 | struct load_op *insn = (struct load_op *) pc; | |
1393 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1394 | ||
1395 | dbg_printk("load field ref offset %u type s64\n", | |
1396 | ref->offset); | |
d644d1df | 1397 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1398 | estack_ax_v = |
03cb0cdd | 1399 | ((struct literal_numeric *) &interpreter_stack_data[ref->offset])->v; |
d644d1df | 1400 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1401 | dbg_printk("ref load s64 %lld\n", |
1402 | (long long) estack_ax_v); | |
1403 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1404 | PO; | |
1405 | } | |
1406 | ||
80c2a69a | 1407 | OP(BYTECODE_OP_LOAD_FIELD_REF_DOUBLE): |
07dfc1d0 MD |
1408 | { |
1409 | BUG_ON(1); | |
1410 | PO; | |
1411 | } | |
1412 | ||
1413 | /* load from immediate operand */ | |
80c2a69a | 1414 | OP(BYTECODE_OP_LOAD_STRING): |
07dfc1d0 MD |
1415 | { |
1416 | struct load_op *insn = (struct load_op *) pc; | |
1417 | ||
1418 | dbg_printk("load string %s\n", insn->data); | |
d644d1df | 1419 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1420 | estack_ax(stack, top)->u.s.str = insn->data; |
cbc19040 | 1421 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1422 | estack_ax(stack, top)->u.s.literal_type = |
1423 | ESTACK_STRING_LITERAL_TYPE_PLAIN; | |
1424 | estack_ax(stack, top)->u.s.user = 0; | |
1425 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
1426 | PO; | |
1427 | } | |
1428 | ||
80c2a69a | 1429 | OP(BYTECODE_OP_LOAD_STAR_GLOB_STRING): |
02aca193 PP |
1430 | { |
1431 | struct load_op *insn = (struct load_op *) pc; | |
1432 | ||
1433 | dbg_printk("load globbing pattern %s\n", insn->data); | |
d644d1df | 1434 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
02aca193 | 1435 | estack_ax(stack, top)->u.s.str = insn->data; |
cbc19040 | 1436 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1437 | estack_ax(stack, top)->u.s.literal_type = |
1438 | ESTACK_STRING_LITERAL_TYPE_STAR_GLOB; | |
f127e61e | 1439 | estack_ax(stack, top)->u.s.user = 0; |
07dfc1d0 MD |
1440 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
1441 | PO; | |
1442 | } | |
1443 | ||
80c2a69a | 1444 | OP(BYTECODE_OP_LOAD_S64): |
07dfc1d0 MD |
1445 | { |
1446 | struct load_op *insn = (struct load_op *) pc; | |
1447 | ||
d644d1df | 1448 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1449 | estack_ax_v = ((struct literal_numeric *) insn->data)->v; |
d644d1df | 1450 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1451 | dbg_printk("load s64 %lld\n", |
1452 | (long long) estack_ax_v); | |
1453 | next_pc += sizeof(struct load_op) | |
1454 | + sizeof(struct literal_numeric); | |
1455 | PO; | |
1456 | } | |
1457 | ||
80c2a69a | 1458 | OP(BYTECODE_OP_LOAD_DOUBLE): |
07dfc1d0 MD |
1459 | { |
1460 | BUG_ON(1); | |
1461 | PO; | |
1462 | } | |
1463 | ||
1464 | /* cast */ | |
80c2a69a FD |
1465 | OP(BYTECODE_OP_CAST_TO_S64): |
1466 | printk(KERN_WARNING "LTTng: bytecode: unsupported non-specialized bytecode op %u\n", | |
1467 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
1468 | ret = -EINVAL; |
1469 | goto end; | |
1470 | ||
80c2a69a | 1471 | OP(BYTECODE_OP_CAST_DOUBLE_TO_S64): |
07dfc1d0 MD |
1472 | { |
1473 | BUG_ON(1); | |
1474 | PO; | |
1475 | } | |
1476 | ||
80c2a69a | 1477 | OP(BYTECODE_OP_CAST_NOP): |
07dfc1d0 MD |
1478 | { |
1479 | next_pc += sizeof(struct cast_op); | |
1480 | PO; | |
1481 | } | |
1482 | ||
1483 | /* get context ref */ | |
80c2a69a | 1484 | OP(BYTECODE_OP_GET_CONTEXT_REF_STRING): |
07dfc1d0 MD |
1485 | { |
1486 | struct load_op *insn = (struct load_op *) pc; | |
1487 | struct field_ref *ref = (struct field_ref *) insn->data; | |
437d5aa5 | 1488 | struct lttng_kernel_ctx_field *ctx_field; |
07dfc1d0 MD |
1489 | union lttng_ctx_value v; |
1490 | ||
1491 | dbg_printk("get context ref offset %u type string\n", | |
1492 | ref->offset); | |
1493 | ctx_field = <tng_static_ctx->fields[ref->offset]; | |
79150a49 | 1494 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); |
d644d1df | 1495 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 MD |
1496 | estack_ax(stack, top)->u.s.str = v.str; |
1497 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1498 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
07dfc1d0 MD |
1499 | ret = -EINVAL; |
1500 | goto end; | |
1501 | } | |
cbc19040 | 1502 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1503 | estack_ax(stack, top)->u.s.literal_type = |
1504 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1505 | estack_ax(stack, top)->u.s.user = 0; |
d644d1df | 1506 | estack_ax(stack, top)->type = REG_STRING; |
07dfc1d0 MD |
1507 | dbg_printk("ref get context string %s\n", estack_ax(stack, top)->u.s.str); |
1508 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1509 | PO; | |
1510 | } | |
1511 | ||
80c2a69a | 1512 | OP(BYTECODE_OP_GET_CONTEXT_REF_S64): |
07dfc1d0 MD |
1513 | { |
1514 | struct load_op *insn = (struct load_op *) pc; | |
1515 | struct field_ref *ref = (struct field_ref *) insn->data; | |
437d5aa5 | 1516 | struct lttng_kernel_ctx_field *ctx_field; |
07dfc1d0 MD |
1517 | union lttng_ctx_value v; |
1518 | ||
1519 | dbg_printk("get context ref offset %u type s64\n", | |
1520 | ref->offset); | |
1521 | ctx_field = <tng_static_ctx->fields[ref->offset]; | |
79150a49 | 1522 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); |
d644d1df | 1523 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1524 | estack_ax_v = v.s64; |
d644d1df | 1525 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1526 | dbg_printk("ref get context s64 %lld\n", |
1527 | (long long) estack_ax_v); | |
1528 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1529 | PO; | |
1530 | } | |
1531 | ||
80c2a69a | 1532 | OP(BYTECODE_OP_GET_CONTEXT_REF_DOUBLE): |
07dfc1d0 MD |
1533 | { |
1534 | BUG_ON(1); | |
1535 | PO; | |
1536 | } | |
1537 | ||
f127e61e | 1538 | /* load userspace field ref */ |
80c2a69a | 1539 | OP(BYTECODE_OP_LOAD_FIELD_REF_USER_STRING): |
f127e61e MD |
1540 | { |
1541 | struct load_op *insn = (struct load_op *) pc; | |
1542 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1543 | ||
1544 | dbg_printk("load field ref offset %u type user string\n", | |
1545 | ref->offset); | |
d644d1df | 1546 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
5b4ad89f | 1547 | estack_ax(stack, top)->u.s.user_str = |
03cb0cdd | 1548 | *(const char * const *) &interpreter_stack_data[ref->offset]; |
acbe9250 | 1549 | if (unlikely(!estack_ax(stack, top)->u.s.user_str)) { |
80c2a69a | 1550 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
f127e61e MD |
1551 | ret = -EINVAL; |
1552 | goto end; | |
1553 | } | |
cbc19040 | 1554 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1555 | estack_ax(stack, top)->u.s.literal_type = |
1556 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1557 | estack_ax(stack, top)->u.s.user = 1; |
d644d1df | 1558 | estack_ax(stack, top)->type = REG_STRING; |
acbe9250 | 1559 | dbg_load_ref_user_str_printk(estack_ax(stack, top)); |
f127e61e MD |
1560 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1561 | PO; | |
1562 | } | |
1563 | ||
80c2a69a | 1564 | OP(BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE): |
f127e61e MD |
1565 | { |
1566 | struct load_op *insn = (struct load_op *) pc; | |
1567 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1568 | ||
1569 | dbg_printk("load field ref offset %u type user sequence\n", | |
1570 | ref->offset); | |
d644d1df | 1571 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
f127e61e | 1572 | estack_ax(stack, top)->u.s.seq_len = |
03cb0cdd | 1573 | *(unsigned long *) &interpreter_stack_data[ref->offset]; |
5b4ad89f | 1574 | estack_ax(stack, top)->u.s.user_str = |
03cb0cdd | 1575 | *(const char **) (&interpreter_stack_data[ref->offset |
f127e61e | 1576 | + sizeof(unsigned long)]); |
acbe9250 | 1577 | if (unlikely(!estack_ax(stack, top)->u.s.user_str)) { |
80c2a69a | 1578 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
f127e61e MD |
1579 | ret = -EINVAL; |
1580 | goto end; | |
1581 | } | |
02aca193 PP |
1582 | estack_ax(stack, top)->u.s.literal_type = |
1583 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e MD |
1584 | estack_ax(stack, top)->u.s.user = 1; |
1585 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1586 | PO; | |
1587 | } | |
1588 | ||
80c2a69a | 1589 | OP(BYTECODE_OP_GET_CONTEXT_ROOT): |
3834b99f MD |
1590 | { |
1591 | dbg_printk("op get context root\n"); | |
d644d1df | 1592 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
3834b99f MD |
1593 | estack_ax(stack, top)->u.ptr.type = LOAD_ROOT_CONTEXT; |
1594 | /* "field" only needed for variants. */ | |
1595 | estack_ax(stack, top)->u.ptr.field = NULL; | |
d644d1df | 1596 | estack_ax(stack, top)->type = REG_PTR; |
3834b99f MD |
1597 | next_pc += sizeof(struct load_op); |
1598 | PO; | |
1599 | } | |
1600 | ||
80c2a69a | 1601 | OP(BYTECODE_OP_GET_APP_CONTEXT_ROOT): |
3834b99f MD |
1602 | { |
1603 | BUG_ON(1); | |
1604 | PO; | |
1605 | } | |
1606 | ||
80c2a69a | 1607 | OP(BYTECODE_OP_GET_PAYLOAD_ROOT): |
3834b99f MD |
1608 | { |
1609 | dbg_printk("op get app payload root\n"); | |
d644d1df | 1610 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1611 | estack_ax(stack, top)->u.ptr.type = LOAD_ROOT_PAYLOAD; |
03cb0cdd | 1612 | estack_ax(stack, top)->u.ptr.ptr = interpreter_stack_data; |
3834b99f MD |
1613 | /* "field" only needed for variants. */ |
1614 | estack_ax(stack, top)->u.ptr.field = NULL; | |
d644d1df | 1615 | estack_ax(stack, top)->type = REG_PTR; |
3834b99f MD |
1616 | next_pc += sizeof(struct load_op); |
1617 | PO; | |
1618 | } | |
1619 | ||
80c2a69a | 1620 | OP(BYTECODE_OP_GET_SYMBOL): |
3834b99f MD |
1621 | { |
1622 | dbg_printk("op get symbol\n"); | |
1623 | switch (estack_ax(stack, top)->u.ptr.type) { | |
1624 | case LOAD_OBJECT: | |
80c2a69a | 1625 | printk(KERN_WARNING "LTTng: bytecode: Nested fields not implemented yet.\n"); |
3834b99f MD |
1626 | ret = -EINVAL; |
1627 | goto end; | |
1628 | case LOAD_ROOT_CONTEXT: | |
1629 | case LOAD_ROOT_APP_CONTEXT: | |
1630 | case LOAD_ROOT_PAYLOAD: | |
1631 | /* | |
1632 | * symbol lookup is performed by | |
1633 | * specialization. | |
1634 | */ | |
1635 | ret = -EINVAL; | |
1636 | goto end; | |
1637 | } | |
1638 | next_pc += sizeof(struct load_op) + sizeof(struct get_symbol); | |
1639 | PO; | |
1640 | } | |
1641 | ||
80c2a69a | 1642 | OP(BYTECODE_OP_GET_SYMBOL_FIELD): |
3834b99f MD |
1643 | { |
1644 | /* | |
1645 | * Used for first variant encountered in a | |
1646 | * traversal. Variants are not implemented yet. | |
1647 | */ | |
1648 | ret = -EINVAL; | |
1649 | goto end; | |
1650 | } | |
1651 | ||
80c2a69a | 1652 | OP(BYTECODE_OP_GET_INDEX_U16): |
3834b99f MD |
1653 | { |
1654 | struct load_op *insn = (struct load_op *) pc; | |
1655 | struct get_index_u16 *index = (struct get_index_u16 *) insn->data; | |
1656 | ||
1657 | dbg_printk("op get index u16\n"); | |
1658 | ret = dynamic_get_index(lttng_probe_ctx, bytecode, index->index, estack_ax(stack, top)); | |
1659 | if (ret) | |
1660 | goto end; | |
1661 | estack_ax_v = estack_ax(stack, top)->u.v; | |
d644d1df | 1662 | estack_ax_t = estack_ax(stack, top)->type; |
3834b99f MD |
1663 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16); |
1664 | PO; | |
1665 | } | |
1666 | ||
80c2a69a | 1667 | OP(BYTECODE_OP_GET_INDEX_U64): |
3834b99f MD |
1668 | { |
1669 | struct load_op *insn = (struct load_op *) pc; | |
1670 | struct get_index_u64 *index = (struct get_index_u64 *) insn->data; | |
1671 | ||
1672 | dbg_printk("op get index u64\n"); | |
1673 | ret = dynamic_get_index(lttng_probe_ctx, bytecode, index->index, estack_ax(stack, top)); | |
1674 | if (ret) | |
1675 | goto end; | |
1676 | estack_ax_v = estack_ax(stack, top)->u.v; | |
d644d1df | 1677 | estack_ax_t = estack_ax(stack, top)->type; |
3834b99f MD |
1678 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64); |
1679 | PO; | |
1680 | } | |
1681 | ||
80c2a69a | 1682 | OP(BYTECODE_OP_LOAD_FIELD): |
3834b99f MD |
1683 | { |
1684 | dbg_printk("op load field\n"); | |
1685 | ret = dynamic_load_field(estack_ax(stack, top)); | |
1686 | if (ret) | |
1687 | goto end; | |
1688 | estack_ax_v = estack_ax(stack, top)->u.v; | |
d644d1df | 1689 | estack_ax_t = estack_ax(stack, top)->type; |
3834b99f MD |
1690 | next_pc += sizeof(struct load_op); |
1691 | PO; | |
1692 | } | |
1693 | ||
80c2a69a | 1694 | OP(BYTECODE_OP_LOAD_FIELD_S8): |
3834b99f MD |
1695 | { |
1696 | dbg_printk("op load field s8\n"); | |
1697 | ||
1698 | estack_ax_v = *(int8_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1699 | estack_ax_t = REG_S64; |
3834b99f MD |
1700 | next_pc += sizeof(struct load_op); |
1701 | PO; | |
1702 | } | |
80c2a69a | 1703 | OP(BYTECODE_OP_LOAD_FIELD_S16): |
3834b99f MD |
1704 | { |
1705 | dbg_printk("op load field s16\n"); | |
1706 | ||
1707 | estack_ax_v = *(int16_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1708 | estack_ax_t = REG_S64; |
3834b99f MD |
1709 | next_pc += sizeof(struct load_op); |
1710 | PO; | |
1711 | } | |
80c2a69a | 1712 | OP(BYTECODE_OP_LOAD_FIELD_S32): |
3834b99f MD |
1713 | { |
1714 | dbg_printk("op load field s32\n"); | |
1715 | ||
1716 | estack_ax_v = *(int32_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1717 | estack_ax_t = REG_S64; |
3834b99f MD |
1718 | next_pc += sizeof(struct load_op); |
1719 | PO; | |
1720 | } | |
80c2a69a | 1721 | OP(BYTECODE_OP_LOAD_FIELD_S64): |
3834b99f MD |
1722 | { |
1723 | dbg_printk("op load field s64\n"); | |
1724 | ||
1725 | estack_ax_v = *(int64_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1726 | estack_ax_t = REG_S64; |
3834b99f MD |
1727 | next_pc += sizeof(struct load_op); |
1728 | PO; | |
1729 | } | |
80c2a69a | 1730 | OP(BYTECODE_OP_LOAD_FIELD_U8): |
3834b99f MD |
1731 | { |
1732 | dbg_printk("op load field u8\n"); | |
1733 | ||
1734 | estack_ax_v = *(uint8_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1735 | estack_ax_t = REG_S64; |
3834b99f MD |
1736 | next_pc += sizeof(struct load_op); |
1737 | PO; | |
1738 | } | |
80c2a69a | 1739 | OP(BYTECODE_OP_LOAD_FIELD_U16): |
3834b99f MD |
1740 | { |
1741 | dbg_printk("op load field u16\n"); | |
1742 | ||
1743 | estack_ax_v = *(uint16_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1744 | estack_ax_t = REG_S64; |
3834b99f MD |
1745 | next_pc += sizeof(struct load_op); |
1746 | PO; | |
1747 | } | |
80c2a69a | 1748 | OP(BYTECODE_OP_LOAD_FIELD_U32): |
3834b99f MD |
1749 | { |
1750 | dbg_printk("op load field u32\n"); | |
1751 | ||
1752 | estack_ax_v = *(uint32_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1753 | estack_ax_t = REG_S64; |
3834b99f MD |
1754 | next_pc += sizeof(struct load_op); |
1755 | PO; | |
1756 | } | |
80c2a69a | 1757 | OP(BYTECODE_OP_LOAD_FIELD_U64): |
3834b99f MD |
1758 | { |
1759 | dbg_printk("op load field u64\n"); | |
1760 | ||
1761 | estack_ax_v = *(uint64_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1762 | estack_ax_t = REG_S64; |
3834b99f MD |
1763 | next_pc += sizeof(struct load_op); |
1764 | PO; | |
1765 | } | |
80c2a69a | 1766 | OP(BYTECODE_OP_LOAD_FIELD_DOUBLE): |
3834b99f MD |
1767 | { |
1768 | ret = -EINVAL; | |
1769 | goto end; | |
1770 | } | |
1771 | ||
80c2a69a | 1772 | OP(BYTECODE_OP_LOAD_FIELD_STRING): |
3834b99f MD |
1773 | { |
1774 | const char *str; | |
1775 | ||
1776 | dbg_printk("op load field string\n"); | |
1777 | str = (const char *) estack_ax(stack, top)->u.ptr.ptr; | |
1778 | estack_ax(stack, top)->u.s.str = str; | |
1779 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1780 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
3834b99f MD |
1781 | ret = -EINVAL; |
1782 | goto end; | |
1783 | } | |
4efe037b | 1784 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
3834b99f MD |
1785 | estack_ax(stack, top)->u.s.literal_type = |
1786 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 1787 | estack_ax(stack, top)->type = REG_STRING; |
3834b99f MD |
1788 | next_pc += sizeof(struct load_op); |
1789 | PO; | |
1790 | } | |
1791 | ||
80c2a69a | 1792 | OP(BYTECODE_OP_LOAD_FIELD_SEQUENCE): |
3834b99f MD |
1793 | { |
1794 | const char *ptr; | |
1795 | ||
1796 | dbg_printk("op load field string sequence\n"); | |
1797 | ptr = estack_ax(stack, top)->u.ptr.ptr; | |
1798 | estack_ax(stack, top)->u.s.seq_len = *(unsigned long *) ptr; | |
1799 | estack_ax(stack, top)->u.s.str = *(const char **) (ptr + sizeof(unsigned long)); | |
1800 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1801 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
3834b99f MD |
1802 | ret = -EINVAL; |
1803 | goto end; | |
1804 | } | |
1805 | estack_ax(stack, top)->u.s.literal_type = | |
1806 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 1807 | estack_ax(stack, top)->type = REG_STRING; |
3834b99f MD |
1808 | next_pc += sizeof(struct load_op); |
1809 | PO; | |
1810 | } | |
1811 | ||
07dfc1d0 MD |
1812 | END_OP |
1813 | end: | |
a93d4e71 | 1814 | /* Return _DISCARD on error. */ |
07dfc1d0 | 1815 | if (ret) |
80c2a69a | 1816 | return LTTNG_INTERPRETER_DISCARD; |
03cb0cdd FD |
1817 | |
1818 | if (output) { | |
1819 | return lttng_bytecode_interpret_format_output( | |
1820 | estack_ax(stack, top), output); | |
1821 | } | |
1822 | ||
07dfc1d0 MD |
1823 | return retval; |
1824 | } | |
03cb0cdd FD |
1825 | LTTNG_STACK_FRAME_NON_STANDARD(bytecode_interpret); |
1826 | ||
80c2a69a | 1827 | uint64_t lttng_bytecode_filter_interpret(void *filter_data, |
03cb0cdd FD |
1828 | struct lttng_probe_ctx *lttng_probe_ctx, |
1829 | const char *filter_stack_data) | |
1830 | { | |
a775608d MD |
1831 | return bytecode_interpret(filter_data, |
1832 | filter_stack_data, lttng_probe_ctx, NULL); | |
03cb0cdd | 1833 | } |
07dfc1d0 | 1834 | |
99d223ad | 1835 | uint64_t lttng_bytecode_capture_interpret(void *capture_data, |
99d223ad | 1836 | const char *capture_stack_data, |
a775608d | 1837 | struct lttng_probe_ctx *lttng_probe_ctx, |
99d223ad FD |
1838 | struct lttng_interpreter_output *output) |
1839 | { | |
a775608d MD |
1840 | return bytecode_interpret(capture_data, |
1841 | capture_stack_data, lttng_probe_ctx, output); | |
99d223ad FD |
1842 | } |
1843 | ||
07dfc1d0 MD |
1844 | #undef START_OP |
1845 | #undef OP | |
1846 | #undef PO | |
1847 | #undef END_OP |