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 | |
acbe9250 | 23 | char get_char(const struct estack_entry *reg, size_t offset) |
f127e61e MD |
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 | ||
99d223ad FD |
217 | uint64_t lttng_bytecode_capture_interpret_false(void *filter_data, |
218 | struct lttng_probe_ctx *lttng_probe_ctx, | |
219 | const char *capture_stack_data, | |
220 | struct lttng_interpreter_output *output) | |
221 | { | |
222 | return LTTNG_INTERPRETER_DISCARD; | |
223 | } | |
224 | ||
07dfc1d0 MD |
225 | #ifdef INTERPRETER_USE_SWITCH |
226 | ||
227 | /* | |
228 | * Fallback for compilers that do not support taking address of labels. | |
229 | */ | |
230 | ||
231 | #define START_OP \ | |
232 | start_pc = &bytecode->data[0]; \ | |
233 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; \ | |
234 | pc = next_pc) { \ | |
5a15f70c | 235 | dbg_printk("LTTng: Executing op %s (%u)\n", \ |
80c2a69a FD |
236 | lttng_bytecode_print_op((unsigned int) *(bytecode_opcode_t *) pc), \ |
237 | (unsigned int) *(bytecode_opcode_t *) pc); \ | |
238 | switch (*(bytecode_opcode_t *) pc) { | |
07dfc1d0 MD |
239 | |
240 | #define OP(name) case name | |
241 | ||
242 | #define PO break | |
243 | ||
244 | #define END_OP } \ | |
245 | } | |
246 | ||
247 | #else | |
248 | ||
249 | /* | |
250 | * Dispatch-table based interpreter. | |
251 | */ | |
252 | ||
253 | #define START_OP \ | |
3834b99f | 254 | start_pc = &bytecode->code[0]; \ |
07dfc1d0 MD |
255 | pc = next_pc = start_pc; \ |
256 | if (unlikely(pc - start_pc >= bytecode->len)) \ | |
257 | goto end; \ | |
80c2a69a | 258 | goto *dispatch[*(bytecode_opcode_t *) pc]; |
07dfc1d0 MD |
259 | |
260 | #define OP(name) \ | |
261 | LABEL_##name | |
262 | ||
263 | #define PO \ | |
264 | pc = next_pc; \ | |
80c2a69a | 265 | goto *dispatch[*(bytecode_opcode_t *) pc]; |
07dfc1d0 MD |
266 | |
267 | #define END_OP | |
268 | ||
269 | #endif | |
270 | ||
1242217a FD |
271 | #define IS_INTEGER_REGISTER(reg_type) \ |
272 | (reg_type == REG_S64 || reg_type == REG_U64) | |
d644d1df | 273 | |
3834b99f MD |
274 | static int context_get_index(struct lttng_probe_ctx *lttng_probe_ctx, |
275 | struct load_ptr *ptr, | |
276 | uint32_t idx) | |
277 | { | |
278 | ||
279 | struct lttng_ctx_field *ctx_field; | |
280 | struct lttng_event_field *field; | |
281 | union lttng_ctx_value v; | |
282 | ||
283 | ctx_field = <tng_static_ctx->fields[idx]; | |
284 | field = &ctx_field->event_field; | |
285 | ptr->type = LOAD_OBJECT; | |
286 | /* field is only used for types nested within variants. */ | |
287 | ptr->field = NULL; | |
288 | ||
12bb2edb MD |
289 | switch (field->type.type) { |
290 | case lttng_kernel_type_integer: | |
3834b99f | 291 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); |
ceabb767 | 292 | if (field->type.u.integer.signedness) { |
3834b99f MD |
293 | ptr->object_type = OBJECT_TYPE_S64; |
294 | ptr->u.s64 = v.s64; | |
295 | ptr->ptr = &ptr->u.s64; | |
296 | } else { | |
297 | ptr->object_type = OBJECT_TYPE_U64; | |
298 | ptr->u.u64 = v.s64; /* Cast. */ | |
299 | ptr->ptr = &ptr->u.u64; | |
300 | } | |
301 | break; | |
12bb2edb | 302 | case lttng_kernel_type_enum_nestable: |
3834b99f MD |
303 | { |
304 | const struct lttng_integer_type *itype = | |
ceabb767 | 305 | &field->type.u.enum_nestable.container_type->u.integer; |
3834b99f MD |
306 | |
307 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
308 | if (itype->signedness) { | |
29a574c3 | 309 | ptr->object_type = OBJECT_TYPE_SIGNED_ENUM; |
3834b99f MD |
310 | ptr->u.s64 = v.s64; |
311 | ptr->ptr = &ptr->u.s64; | |
312 | } else { | |
29a574c3 | 313 | ptr->object_type = OBJECT_TYPE_UNSIGNED_ENUM; |
3834b99f MD |
314 | ptr->u.u64 = v.s64; /* Cast. */ |
315 | ptr->ptr = &ptr->u.u64; | |
316 | } | |
317 | break; | |
318 | } | |
12bb2edb | 319 | case lttng_kernel_type_array_nestable: |
ceabb767 | 320 | if (!lttng_is_bytewise_integer(field->type.u.array_nestable.elem_type)) { |
80c2a69a | 321 | printk(KERN_WARNING "LTTng: bytecode: Array nesting only supports integer types.\n"); |
3834b99f MD |
322 | return -EINVAL; |
323 | } | |
28cbcb59 | 324 | if (field->type.u.array_nestable.elem_type->u.integer.encoding == lttng_kernel_string_encoding_none) { |
80c2a69a | 325 | printk(KERN_WARNING "LTTng: bytecode: Only string arrays are supported for contexts.\n"); |
3834b99f MD |
326 | return -EINVAL; |
327 | } | |
328 | ptr->object_type = OBJECT_TYPE_STRING; | |
329 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
330 | ptr->ptr = v.str; | |
331 | break; | |
12bb2edb | 332 | case lttng_kernel_type_sequence_nestable: |
ceabb767 | 333 | if (!lttng_is_bytewise_integer(field->type.u.sequence_nestable.elem_type)) { |
80c2a69a | 334 | printk(KERN_WARNING "LTTng: bytecode: Sequence nesting only supports integer types.\n"); |
3834b99f MD |
335 | return -EINVAL; |
336 | } | |
28cbcb59 | 337 | if (field->type.u.sequence_nestable.elem_type->u.integer.encoding == lttng_kernel_string_encoding_none) { |
80c2a69a | 338 | printk(KERN_WARNING "LTTng: bytecode: Only string sequences are supported for contexts.\n"); |
3834b99f MD |
339 | return -EINVAL; |
340 | } | |
341 | ptr->object_type = OBJECT_TYPE_STRING; | |
342 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
343 | ptr->ptr = v.str; | |
344 | break; | |
12bb2edb | 345 | case lttng_kernel_type_string: |
3834b99f MD |
346 | ptr->object_type = OBJECT_TYPE_STRING; |
347 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); | |
348 | ptr->ptr = v.str; | |
349 | break; | |
12bb2edb | 350 | case lttng_kernel_type_struct_nestable: |
80c2a69a | 351 | printk(KERN_WARNING "LTTng: bytecode: Structure type cannot be loaded.\n"); |
3834b99f | 352 | return -EINVAL; |
12bb2edb | 353 | case lttng_kernel_type_variant_nestable: |
80c2a69a | 354 | printk(KERN_WARNING "LTTng: bytecode: Variant type cannot be loaded.\n"); |
ceabb767 | 355 | return -EINVAL; |
3834b99f | 356 | default: |
12bb2edb | 357 | printk(KERN_WARNING "LTTng: bytecode: Unknown type: %d", (int) field->type.type); |
3834b99f MD |
358 | return -EINVAL; |
359 | } | |
360 | return 0; | |
361 | } | |
362 | ||
363 | static int dynamic_get_index(struct lttng_probe_ctx *lttng_probe_ctx, | |
364 | struct bytecode_runtime *runtime, | |
365 | uint64_t index, struct estack_entry *stack_top) | |
366 | { | |
367 | int ret; | |
80c2a69a | 368 | const struct bytecode_get_index_data *gid; |
3834b99f | 369 | |
80c2a69a | 370 | gid = (const struct bytecode_get_index_data *) &runtime->data[index]; |
3834b99f MD |
371 | switch (stack_top->u.ptr.type) { |
372 | case LOAD_OBJECT: | |
373 | switch (stack_top->u.ptr.object_type) { | |
374 | case OBJECT_TYPE_ARRAY: | |
375 | { | |
376 | const char *ptr; | |
377 | ||
378 | WARN_ON_ONCE(gid->offset >= gid->array_len); | |
379 | /* Skip count (unsigned long) */ | |
380 | ptr = *(const char **) (stack_top->u.ptr.ptr + sizeof(unsigned long)); | |
381 | ptr = ptr + gid->offset; | |
382 | stack_top->u.ptr.ptr = ptr; | |
383 | stack_top->u.ptr.object_type = gid->elem.type; | |
384 | stack_top->u.ptr.rev_bo = gid->elem.rev_bo; | |
12bb2edb | 385 | BUG_ON(stack_top->u.ptr.field->type.type != lttng_kernel_type_array_nestable); |
3834b99f MD |
386 | stack_top->u.ptr.field = NULL; |
387 | break; | |
388 | } | |
389 | case OBJECT_TYPE_SEQUENCE: | |
390 | { | |
391 | const char *ptr; | |
392 | size_t ptr_seq_len; | |
393 | ||
394 | ptr = *(const char **) (stack_top->u.ptr.ptr + sizeof(unsigned long)); | |
395 | ptr_seq_len = *(unsigned long *) stack_top->u.ptr.ptr; | |
396 | if (gid->offset >= gid->elem.len * ptr_seq_len) { | |
397 | ret = -EINVAL; | |
398 | goto end; | |
399 | } | |
400 | ptr = ptr + gid->offset; | |
401 | stack_top->u.ptr.ptr = ptr; | |
402 | stack_top->u.ptr.object_type = gid->elem.type; | |
403 | stack_top->u.ptr.rev_bo = gid->elem.rev_bo; | |
12bb2edb | 404 | BUG_ON(stack_top->u.ptr.field->type.type != lttng_kernel_type_sequence_nestable); |
3834b99f MD |
405 | stack_top->u.ptr.field = NULL; |
406 | break; | |
407 | } | |
408 | case OBJECT_TYPE_STRUCT: | |
80c2a69a | 409 | printk(KERN_WARNING "LTTng: bytecode: Nested structures are not supported yet.\n"); |
3834b99f MD |
410 | ret = -EINVAL; |
411 | goto end; | |
412 | case OBJECT_TYPE_VARIANT: | |
413 | default: | |
80c2a69a | 414 | printk(KERN_WARNING "LTTng: bytecode: Unexpected get index type %d", |
3834b99f MD |
415 | (int) stack_top->u.ptr.object_type); |
416 | ret = -EINVAL; | |
417 | goto end; | |
418 | } | |
419 | break; | |
420 | case LOAD_ROOT_CONTEXT: | |
421 | case LOAD_ROOT_APP_CONTEXT: /* Fall-through */ | |
422 | { | |
423 | ret = context_get_index(lttng_probe_ctx, | |
424 | &stack_top->u.ptr, | |
425 | gid->ctx_index); | |
426 | if (ret) { | |
427 | goto end; | |
428 | } | |
429 | break; | |
430 | } | |
431 | case LOAD_ROOT_PAYLOAD: | |
432 | stack_top->u.ptr.ptr += gid->offset; | |
433 | if (gid->elem.type == OBJECT_TYPE_STRING) | |
434 | stack_top->u.ptr.ptr = *(const char * const *) stack_top->u.ptr.ptr; | |
435 | stack_top->u.ptr.object_type = gid->elem.type; | |
436 | stack_top->u.ptr.type = LOAD_OBJECT; | |
03cb0cdd | 437 | stack_top->u.ptr.field = gid->field; |
60e8b0d6 | 438 | stack_top->u.ptr.rev_bo = gid->elem.rev_bo; |
3834b99f MD |
439 | break; |
440 | } | |
196e531f FD |
441 | |
442 | stack_top->type = REG_PTR; | |
443 | ||
3834b99f MD |
444 | return 0; |
445 | ||
446 | end: | |
447 | return ret; | |
448 | } | |
449 | ||
450 | static int dynamic_load_field(struct estack_entry *stack_top) | |
451 | { | |
452 | int ret; | |
453 | ||
454 | switch (stack_top->u.ptr.type) { | |
455 | case LOAD_OBJECT: | |
456 | break; | |
457 | case LOAD_ROOT_CONTEXT: | |
458 | case LOAD_ROOT_APP_CONTEXT: | |
459 | case LOAD_ROOT_PAYLOAD: | |
460 | default: | |
80c2a69a | 461 | dbg_printk("Bytecode warning: cannot load root, missing field name.\n"); |
3834b99f MD |
462 | ret = -EINVAL; |
463 | goto end; | |
464 | } | |
465 | switch (stack_top->u.ptr.object_type) { | |
466 | case OBJECT_TYPE_S8: | |
467 | dbg_printk("op load field s8\n"); | |
468 | stack_top->u.v = *(int8_t *) stack_top->u.ptr.ptr; | |
d644d1df | 469 | stack_top->type = REG_S64; |
3834b99f MD |
470 | break; |
471 | case OBJECT_TYPE_S16: | |
472 | { | |
473 | int16_t tmp; | |
474 | ||
475 | dbg_printk("op load field s16\n"); | |
476 | tmp = *(int16_t *) stack_top->u.ptr.ptr; | |
477 | if (stack_top->u.ptr.rev_bo) | |
478 | __swab16s(&tmp); | |
479 | stack_top->u.v = tmp; | |
d644d1df | 480 | stack_top->type = REG_S64; |
3834b99f MD |
481 | break; |
482 | } | |
483 | case OBJECT_TYPE_S32: | |
484 | { | |
485 | int32_t tmp; | |
486 | ||
487 | dbg_printk("op load field s32\n"); | |
488 | tmp = *(int32_t *) stack_top->u.ptr.ptr; | |
489 | if (stack_top->u.ptr.rev_bo) | |
490 | __swab32s(&tmp); | |
491 | stack_top->u.v = tmp; | |
d644d1df | 492 | stack_top->type = REG_S64; |
3834b99f MD |
493 | break; |
494 | } | |
495 | case OBJECT_TYPE_S64: | |
496 | { | |
497 | int64_t tmp; | |
498 | ||
499 | dbg_printk("op load field s64\n"); | |
500 | tmp = *(int64_t *) stack_top->u.ptr.ptr; | |
501 | if (stack_top->u.ptr.rev_bo) | |
502 | __swab64s(&tmp); | |
503 | stack_top->u.v = tmp; | |
d644d1df | 504 | stack_top->type = REG_S64; |
3834b99f MD |
505 | break; |
506 | } | |
29a574c3 FD |
507 | case OBJECT_TYPE_SIGNED_ENUM: |
508 | { | |
509 | int64_t tmp; | |
510 | ||
511 | dbg_printk("op load field signed enumeration\n"); | |
512 | tmp = *(int64_t *) stack_top->u.ptr.ptr; | |
513 | if (stack_top->u.ptr.rev_bo) | |
514 | __swab64s(&tmp); | |
515 | stack_top->u.v = tmp; | |
516 | stack_top->type = REG_S64; | |
517 | break; | |
518 | } | |
3834b99f MD |
519 | case OBJECT_TYPE_U8: |
520 | dbg_printk("op load field u8\n"); | |
521 | stack_top->u.v = *(uint8_t *) stack_top->u.ptr.ptr; | |
1242217a | 522 | stack_top->type = REG_U64; |
3834b99f MD |
523 | break; |
524 | case OBJECT_TYPE_U16: | |
525 | { | |
526 | uint16_t tmp; | |
527 | ||
5fae98f7 | 528 | dbg_printk("op load field u16\n"); |
3834b99f MD |
529 | tmp = *(uint16_t *) stack_top->u.ptr.ptr; |
530 | if (stack_top->u.ptr.rev_bo) | |
531 | __swab16s(&tmp); | |
532 | stack_top->u.v = tmp; | |
1242217a | 533 | stack_top->type = REG_U64; |
3834b99f MD |
534 | break; |
535 | } | |
536 | case OBJECT_TYPE_U32: | |
537 | { | |
538 | uint32_t tmp; | |
539 | ||
540 | dbg_printk("op load field u32\n"); | |
541 | tmp = *(uint32_t *) stack_top->u.ptr.ptr; | |
542 | if (stack_top->u.ptr.rev_bo) | |
543 | __swab32s(&tmp); | |
544 | stack_top->u.v = tmp; | |
1242217a | 545 | stack_top->type = REG_U64; |
3834b99f MD |
546 | break; |
547 | } | |
548 | case OBJECT_TYPE_U64: | |
549 | { | |
550 | uint64_t tmp; | |
551 | ||
552 | dbg_printk("op load field u64\n"); | |
553 | tmp = *(uint64_t *) stack_top->u.ptr.ptr; | |
554 | if (stack_top->u.ptr.rev_bo) | |
555 | __swab64s(&tmp); | |
556 | stack_top->u.v = tmp; | |
1242217a | 557 | stack_top->type = REG_U64; |
3834b99f MD |
558 | break; |
559 | } | |
29a574c3 FD |
560 | case OBJECT_TYPE_UNSIGNED_ENUM: |
561 | { | |
562 | uint64_t tmp; | |
563 | ||
564 | dbg_printk("op load field unsigned enumeration\n"); | |
565 | tmp = *(uint64_t *) stack_top->u.ptr.ptr; | |
566 | if (stack_top->u.ptr.rev_bo) | |
567 | __swab64s(&tmp); | |
568 | stack_top->u.v = tmp; | |
569 | stack_top->type = REG_U64; | |
570 | break; | |
571 | } | |
3834b99f MD |
572 | case OBJECT_TYPE_STRING: |
573 | { | |
574 | const char *str; | |
575 | ||
576 | dbg_printk("op load field string\n"); | |
577 | str = (const char *) stack_top->u.ptr.ptr; | |
578 | stack_top->u.s.str = str; | |
579 | if (unlikely(!stack_top->u.s.str)) { | |
80c2a69a | 580 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
3834b99f MD |
581 | ret = -EINVAL; |
582 | goto end; | |
583 | } | |
4efe037b | 584 | stack_top->u.s.seq_len = LTTNG_SIZE_MAX; |
3834b99f MD |
585 | stack_top->u.s.literal_type = |
586 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 587 | stack_top->type = REG_STRING; |
3834b99f MD |
588 | break; |
589 | } | |
590 | case OBJECT_TYPE_STRING_SEQUENCE: | |
591 | { | |
592 | const char *ptr; | |
593 | ||
594 | dbg_printk("op load field string sequence\n"); | |
595 | ptr = stack_top->u.ptr.ptr; | |
596 | stack_top->u.s.seq_len = *(unsigned long *) ptr; | |
597 | stack_top->u.s.str = *(const char **) (ptr + sizeof(unsigned long)); | |
598 | if (unlikely(!stack_top->u.s.str)) { | |
80c2a69a | 599 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
3834b99f MD |
600 | ret = -EINVAL; |
601 | goto end; | |
602 | } | |
603 | stack_top->u.s.literal_type = | |
604 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 605 | stack_top->type = REG_STRING; |
3834b99f MD |
606 | break; |
607 | } | |
608 | case OBJECT_TYPE_DYNAMIC: | |
609 | /* | |
610 | * Dynamic types in context are looked up | |
611 | * by context get index. | |
612 | */ | |
613 | ret = -EINVAL; | |
614 | goto end; | |
615 | case OBJECT_TYPE_DOUBLE: | |
616 | ret = -EINVAL; | |
617 | goto end; | |
618 | case OBJECT_TYPE_SEQUENCE: | |
619 | case OBJECT_TYPE_ARRAY: | |
620 | case OBJECT_TYPE_STRUCT: | |
621 | case OBJECT_TYPE_VARIANT: | |
80c2a69a | 622 | printk(KERN_WARNING "LTTng: bytecode: Sequences, arrays, struct and variant cannot be loaded (nested types).\n"); |
3834b99f MD |
623 | ret = -EINVAL; |
624 | goto end; | |
625 | } | |
626 | return 0; | |
627 | ||
628 | end: | |
629 | return ret; | |
630 | } | |
631 | ||
03cb0cdd FD |
632 | static |
633 | int lttng_bytecode_interpret_format_output(struct estack_entry *ax, | |
634 | struct lttng_interpreter_output *output) | |
635 | { | |
636 | int ret; | |
637 | ||
638 | again: | |
639 | switch (ax->type) { | |
640 | case REG_S64: | |
641 | output->type = LTTNG_INTERPRETER_TYPE_S64; | |
642 | output->u.s = ax->u.v; | |
643 | break; | |
644 | case REG_U64: | |
645 | output->type = LTTNG_INTERPRETER_TYPE_U64; | |
646 | output->u.u = (uint64_t) ax->u.v; | |
647 | break; | |
648 | case REG_STRING: | |
649 | output->type = LTTNG_INTERPRETER_TYPE_STRING; | |
650 | output->u.str.str = ax->u.s.str; | |
651 | output->u.str.len = ax->u.s.seq_len; | |
652 | break; | |
653 | case REG_PTR: | |
654 | switch (ax->u.ptr.object_type) { | |
655 | case OBJECT_TYPE_S8: | |
656 | case OBJECT_TYPE_S16: | |
657 | case OBJECT_TYPE_S32: | |
658 | case OBJECT_TYPE_S64: | |
659 | case OBJECT_TYPE_U8: | |
660 | case OBJECT_TYPE_U16: | |
661 | case OBJECT_TYPE_U32: | |
662 | case OBJECT_TYPE_U64: | |
663 | case OBJECT_TYPE_DOUBLE: | |
664 | case OBJECT_TYPE_STRING: | |
665 | case OBJECT_TYPE_STRING_SEQUENCE: | |
666 | ret = dynamic_load_field(ax); | |
667 | if (ret) | |
668 | return ret; | |
669 | /* Retry after loading ptr into stack top. */ | |
670 | goto again; | |
671 | case OBJECT_TYPE_SEQUENCE: | |
672 | output->type = LTTNG_INTERPRETER_TYPE_SEQUENCE; | |
673 | output->u.sequence.ptr = *(const char **) (ax->u.ptr.ptr + sizeof(unsigned long)); | |
674 | output->u.sequence.nr_elem = *(unsigned long *) ax->u.ptr.ptr; | |
675 | output->u.sequence.nested_type = ax->u.ptr.field->type.u.sequence_nestable.elem_type; | |
676 | break; | |
677 | case OBJECT_TYPE_ARRAY: | |
678 | /* Skip count (unsigned long) */ | |
679 | output->type = LTTNG_INTERPRETER_TYPE_SEQUENCE; | |
680 | output->u.sequence.ptr = *(const char **) (ax->u.ptr.ptr + sizeof(unsigned long)); | |
681 | output->u.sequence.nr_elem = ax->u.ptr.field->type.u.array_nestable.length; | |
682 | output->u.sequence.nested_type = ax->u.ptr.field->type.u.array_nestable.elem_type; | |
683 | break; | |
29a574c3 FD |
684 | case OBJECT_TYPE_SIGNED_ENUM: |
685 | ret = dynamic_load_field(ax); | |
686 | if (ret) | |
687 | return ret; | |
688 | output->type = LTTNG_INTERPRETER_TYPE_SIGNED_ENUM; | |
689 | output->u.s = ax->u.v; | |
690 | break; | |
691 | case OBJECT_TYPE_UNSIGNED_ENUM: | |
692 | ret = dynamic_load_field(ax); | |
693 | if (ret) | |
694 | return ret; | |
695 | output->type = LTTNG_INTERPRETER_TYPE_UNSIGNED_ENUM; | |
696 | output->u.u = ax->u.v; | |
697 | break; | |
03cb0cdd FD |
698 | case OBJECT_TYPE_STRUCT: |
699 | case OBJECT_TYPE_VARIANT: | |
700 | default: | |
701 | return -EINVAL; | |
702 | } | |
703 | ||
704 | break; | |
705 | case REG_STAR_GLOB_STRING: | |
706 | case REG_TYPE_UNKNOWN: | |
707 | default: | |
708 | return -EINVAL; | |
709 | } | |
710 | ||
80c2a69a | 711 | return LTTNG_INTERPRETER_RECORD_FLAG; |
03cb0cdd FD |
712 | } |
713 | ||
acbe9250 JG |
714 | #ifdef DEBUG |
715 | ||
716 | #define DBG_USER_STR_CUTOFF 32 | |
717 | ||
718 | /* | |
719 | * In debug mode, print user string (truncated, if necessary). | |
720 | */ | |
721 | static inline | |
722 | void dbg_load_ref_user_str_printk(const struct estack_entry *user_str_reg) | |
723 | { | |
724 | size_t pos = 0; | |
725 | char last_char; | |
726 | char user_str[DBG_USER_STR_CUTOFF]; | |
727 | ||
728 | pagefault_disable(); | |
729 | do { | |
730 | last_char = get_char(user_str_reg, pos); | |
731 | user_str[pos] = last_char; | |
732 | pos++; | |
733 | } while (last_char != '\0' && pos < sizeof(user_str)); | |
734 | pagefault_enable(); | |
735 | ||
736 | user_str[sizeof(user_str) - 1] = '\0'; | |
737 | dbg_printk("load field ref user string: '%s%s'\n", user_str, | |
738 | last_char != '\0' ? "[...]" : ""); | |
739 | } | |
740 | #else | |
741 | static inline | |
742 | void dbg_load_ref_user_str_printk(const struct estack_entry *user_str_reg) | |
743 | { | |
744 | } | |
745 | #endif | |
746 | ||
07dfc1d0 MD |
747 | /* |
748 | * Return 0 (discard), or raise the 0x1 flag (log event). | |
749 | * Currently, other flags are kept for future extensions and have no | |
750 | * effect. | |
751 | */ | |
03cb0cdd FD |
752 | static |
753 | uint64_t bytecode_interpret(void *interpreter_data, | |
79150a49 | 754 | struct lttng_probe_ctx *lttng_probe_ctx, |
03cb0cdd FD |
755 | const char *interpreter_stack_data, |
756 | struct lttng_interpreter_output *output) | |
07dfc1d0 | 757 | { |
03cb0cdd | 758 | struct bytecode_runtime *bytecode = interpreter_data; |
07dfc1d0 MD |
759 | void *pc, *next_pc, *start_pc; |
760 | int ret = -EINVAL; | |
761 | uint64_t retval = 0; | |
762 | struct estack _stack; | |
763 | struct estack *stack = &_stack; | |
764 | register int64_t ax = 0, bx = 0; | |
d644d1df | 765 | register enum entry_type ax_t = REG_TYPE_UNKNOWN, bx_t = REG_TYPE_UNKNOWN; |
80c2a69a | 766 | register int top = INTERPRETER_STACK_EMPTY; |
07dfc1d0 | 767 | #ifndef INTERPRETER_USE_SWITCH |
80c2a69a FD |
768 | static void *dispatch[NR_BYTECODE_OPS] = { |
769 | [ BYTECODE_OP_UNKNOWN ] = &&LABEL_BYTECODE_OP_UNKNOWN, | |
07dfc1d0 | 770 | |
80c2a69a | 771 | [ BYTECODE_OP_RETURN ] = &&LABEL_BYTECODE_OP_RETURN, |
07dfc1d0 MD |
772 | |
773 | /* binary */ | |
80c2a69a FD |
774 | [ BYTECODE_OP_MUL ] = &&LABEL_BYTECODE_OP_MUL, |
775 | [ BYTECODE_OP_DIV ] = &&LABEL_BYTECODE_OP_DIV, | |
776 | [ BYTECODE_OP_MOD ] = &&LABEL_BYTECODE_OP_MOD, | |
777 | [ BYTECODE_OP_PLUS ] = &&LABEL_BYTECODE_OP_PLUS, | |
778 | [ BYTECODE_OP_MINUS ] = &&LABEL_BYTECODE_OP_MINUS, | |
779 | [ BYTECODE_OP_BIT_RSHIFT ] = &&LABEL_BYTECODE_OP_BIT_RSHIFT, | |
780 | [ BYTECODE_OP_BIT_LSHIFT ] = &&LABEL_BYTECODE_OP_BIT_LSHIFT, | |
781 | [ BYTECODE_OP_BIT_AND ] = &&LABEL_BYTECODE_OP_BIT_AND, | |
782 | [ BYTECODE_OP_BIT_OR ] = &&LABEL_BYTECODE_OP_BIT_OR, | |
783 | [ BYTECODE_OP_BIT_XOR ] = &&LABEL_BYTECODE_OP_BIT_XOR, | |
07dfc1d0 MD |
784 | |
785 | /* binary comparators */ | |
80c2a69a FD |
786 | [ BYTECODE_OP_EQ ] = &&LABEL_BYTECODE_OP_EQ, |
787 | [ BYTECODE_OP_NE ] = &&LABEL_BYTECODE_OP_NE, | |
788 | [ BYTECODE_OP_GT ] = &&LABEL_BYTECODE_OP_GT, | |
789 | [ BYTECODE_OP_LT ] = &&LABEL_BYTECODE_OP_LT, | |
790 | [ BYTECODE_OP_GE ] = &&LABEL_BYTECODE_OP_GE, | |
791 | [ BYTECODE_OP_LE ] = &&LABEL_BYTECODE_OP_LE, | |
07dfc1d0 MD |
792 | |
793 | /* string binary comparator */ | |
80c2a69a FD |
794 | [ BYTECODE_OP_EQ_STRING ] = &&LABEL_BYTECODE_OP_EQ_STRING, |
795 | [ BYTECODE_OP_NE_STRING ] = &&LABEL_BYTECODE_OP_NE_STRING, | |
796 | [ BYTECODE_OP_GT_STRING ] = &&LABEL_BYTECODE_OP_GT_STRING, | |
797 | [ BYTECODE_OP_LT_STRING ] = &&LABEL_BYTECODE_OP_LT_STRING, | |
798 | [ BYTECODE_OP_GE_STRING ] = &&LABEL_BYTECODE_OP_GE_STRING, | |
799 | [ BYTECODE_OP_LE_STRING ] = &&LABEL_BYTECODE_OP_LE_STRING, | |
07dfc1d0 | 800 | |
02aca193 | 801 | /* globbing pattern binary comparator */ |
80c2a69a FD |
802 | [ BYTECODE_OP_EQ_STAR_GLOB_STRING ] = &&LABEL_BYTECODE_OP_EQ_STAR_GLOB_STRING, |
803 | [ BYTECODE_OP_NE_STAR_GLOB_STRING ] = &&LABEL_BYTECODE_OP_NE_STAR_GLOB_STRING, | |
02aca193 | 804 | |
07dfc1d0 | 805 | /* s64 binary comparator */ |
80c2a69a FD |
806 | [ BYTECODE_OP_EQ_S64 ] = &&LABEL_BYTECODE_OP_EQ_S64, |
807 | [ BYTECODE_OP_NE_S64 ] = &&LABEL_BYTECODE_OP_NE_S64, | |
808 | [ BYTECODE_OP_GT_S64 ] = &&LABEL_BYTECODE_OP_GT_S64, | |
809 | [ BYTECODE_OP_LT_S64 ] = &&LABEL_BYTECODE_OP_LT_S64, | |
810 | [ BYTECODE_OP_GE_S64 ] = &&LABEL_BYTECODE_OP_GE_S64, | |
811 | [ BYTECODE_OP_LE_S64 ] = &&LABEL_BYTECODE_OP_LE_S64, | |
07dfc1d0 MD |
812 | |
813 | /* double binary comparator */ | |
80c2a69a FD |
814 | [ BYTECODE_OP_EQ_DOUBLE ] = &&LABEL_BYTECODE_OP_EQ_DOUBLE, |
815 | [ BYTECODE_OP_NE_DOUBLE ] = &&LABEL_BYTECODE_OP_NE_DOUBLE, | |
816 | [ BYTECODE_OP_GT_DOUBLE ] = &&LABEL_BYTECODE_OP_GT_DOUBLE, | |
817 | [ BYTECODE_OP_LT_DOUBLE ] = &&LABEL_BYTECODE_OP_LT_DOUBLE, | |
818 | [ BYTECODE_OP_GE_DOUBLE ] = &&LABEL_BYTECODE_OP_GE_DOUBLE, | |
819 | [ BYTECODE_OP_LE_DOUBLE ] = &&LABEL_BYTECODE_OP_LE_DOUBLE, | |
07dfc1d0 MD |
820 | |
821 | /* Mixed S64-double binary comparators */ | |
80c2a69a FD |
822 | [ BYTECODE_OP_EQ_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_EQ_DOUBLE_S64, |
823 | [ BYTECODE_OP_NE_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_NE_DOUBLE_S64, | |
824 | [ BYTECODE_OP_GT_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_GT_DOUBLE_S64, | |
825 | [ BYTECODE_OP_LT_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_LT_DOUBLE_S64, | |
826 | [ BYTECODE_OP_GE_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_GE_DOUBLE_S64, | |
827 | [ BYTECODE_OP_LE_DOUBLE_S64 ] = &&LABEL_BYTECODE_OP_LE_DOUBLE_S64, | |
828 | ||
829 | [ BYTECODE_OP_EQ_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_EQ_S64_DOUBLE, | |
830 | [ BYTECODE_OP_NE_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_NE_S64_DOUBLE, | |
831 | [ BYTECODE_OP_GT_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_GT_S64_DOUBLE, | |
832 | [ BYTECODE_OP_LT_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_LT_S64_DOUBLE, | |
833 | [ BYTECODE_OP_GE_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_GE_S64_DOUBLE, | |
834 | [ BYTECODE_OP_LE_S64_DOUBLE ] = &&LABEL_BYTECODE_OP_LE_S64_DOUBLE, | |
07dfc1d0 MD |
835 | |
836 | /* unary */ | |
80c2a69a FD |
837 | [ BYTECODE_OP_UNARY_PLUS ] = &&LABEL_BYTECODE_OP_UNARY_PLUS, |
838 | [ BYTECODE_OP_UNARY_MINUS ] = &&LABEL_BYTECODE_OP_UNARY_MINUS, | |
839 | [ BYTECODE_OP_UNARY_NOT ] = &&LABEL_BYTECODE_OP_UNARY_NOT, | |
840 | [ BYTECODE_OP_UNARY_PLUS_S64 ] = &&LABEL_BYTECODE_OP_UNARY_PLUS_S64, | |
841 | [ BYTECODE_OP_UNARY_MINUS_S64 ] = &&LABEL_BYTECODE_OP_UNARY_MINUS_S64, | |
842 | [ BYTECODE_OP_UNARY_NOT_S64 ] = &&LABEL_BYTECODE_OP_UNARY_NOT_S64, | |
843 | [ BYTECODE_OP_UNARY_PLUS_DOUBLE ] = &&LABEL_BYTECODE_OP_UNARY_PLUS_DOUBLE, | |
844 | [ BYTECODE_OP_UNARY_MINUS_DOUBLE ] = &&LABEL_BYTECODE_OP_UNARY_MINUS_DOUBLE, | |
845 | [ BYTECODE_OP_UNARY_NOT_DOUBLE ] = &&LABEL_BYTECODE_OP_UNARY_NOT_DOUBLE, | |
07dfc1d0 MD |
846 | |
847 | /* logical */ | |
80c2a69a FD |
848 | [ BYTECODE_OP_AND ] = &&LABEL_BYTECODE_OP_AND, |
849 | [ BYTECODE_OP_OR ] = &&LABEL_BYTECODE_OP_OR, | |
07dfc1d0 MD |
850 | |
851 | /* load field ref */ | |
80c2a69a FD |
852 | [ BYTECODE_OP_LOAD_FIELD_REF ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF, |
853 | [ BYTECODE_OP_LOAD_FIELD_REF_STRING ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_STRING, | |
854 | [ BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE, | |
855 | [ BYTECODE_OP_LOAD_FIELD_REF_S64 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_S64, | |
856 | [ BYTECODE_OP_LOAD_FIELD_REF_DOUBLE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_DOUBLE, | |
07dfc1d0 MD |
857 | |
858 | /* load from immediate operand */ | |
80c2a69a FD |
859 | [ BYTECODE_OP_LOAD_STRING ] = &&LABEL_BYTECODE_OP_LOAD_STRING, |
860 | [ BYTECODE_OP_LOAD_STAR_GLOB_STRING ] = &&LABEL_BYTECODE_OP_LOAD_STAR_GLOB_STRING, | |
861 | [ BYTECODE_OP_LOAD_S64 ] = &&LABEL_BYTECODE_OP_LOAD_S64, | |
862 | [ BYTECODE_OP_LOAD_DOUBLE ] = &&LABEL_BYTECODE_OP_LOAD_DOUBLE, | |
07dfc1d0 MD |
863 | |
864 | /* cast */ | |
80c2a69a FD |
865 | [ BYTECODE_OP_CAST_TO_S64 ] = &&LABEL_BYTECODE_OP_CAST_TO_S64, |
866 | [ BYTECODE_OP_CAST_DOUBLE_TO_S64 ] = &&LABEL_BYTECODE_OP_CAST_DOUBLE_TO_S64, | |
867 | [ BYTECODE_OP_CAST_NOP ] = &&LABEL_BYTECODE_OP_CAST_NOP, | |
07dfc1d0 MD |
868 | |
869 | /* get context ref */ | |
80c2a69a FD |
870 | [ BYTECODE_OP_GET_CONTEXT_REF ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF, |
871 | [ BYTECODE_OP_GET_CONTEXT_REF_STRING ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF_STRING, | |
872 | [ BYTECODE_OP_GET_CONTEXT_REF_S64 ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF_S64, | |
873 | [ BYTECODE_OP_GET_CONTEXT_REF_DOUBLE ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_REF_DOUBLE, | |
f127e61e MD |
874 | |
875 | /* load userspace field ref */ | |
80c2a69a FD |
876 | [ BYTECODE_OP_LOAD_FIELD_REF_USER_STRING ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_USER_STRING, |
877 | [ BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE, | |
3834b99f MD |
878 | |
879 | /* Instructions for recursive traversal through composed types. */ | |
80c2a69a FD |
880 | [ BYTECODE_OP_GET_CONTEXT_ROOT ] = &&LABEL_BYTECODE_OP_GET_CONTEXT_ROOT, |
881 | [ BYTECODE_OP_GET_APP_CONTEXT_ROOT ] = &&LABEL_BYTECODE_OP_GET_APP_CONTEXT_ROOT, | |
882 | [ BYTECODE_OP_GET_PAYLOAD_ROOT ] = &&LABEL_BYTECODE_OP_GET_PAYLOAD_ROOT, | |
883 | ||
884 | [ BYTECODE_OP_GET_SYMBOL ] = &&LABEL_BYTECODE_OP_GET_SYMBOL, | |
885 | [ BYTECODE_OP_GET_SYMBOL_FIELD ] = &&LABEL_BYTECODE_OP_GET_SYMBOL_FIELD, | |
886 | [ BYTECODE_OP_GET_INDEX_U16 ] = &&LABEL_BYTECODE_OP_GET_INDEX_U16, | |
887 | [ BYTECODE_OP_GET_INDEX_U64 ] = &&LABEL_BYTECODE_OP_GET_INDEX_U64, | |
888 | ||
889 | [ BYTECODE_OP_LOAD_FIELD ] = &&LABEL_BYTECODE_OP_LOAD_FIELD, | |
890 | [ BYTECODE_OP_LOAD_FIELD_S8 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S8, | |
891 | [ BYTECODE_OP_LOAD_FIELD_S16 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S16, | |
892 | [ BYTECODE_OP_LOAD_FIELD_S32 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S32, | |
893 | [ BYTECODE_OP_LOAD_FIELD_S64 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_S64, | |
894 | [ BYTECODE_OP_LOAD_FIELD_U8 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U8, | |
895 | [ BYTECODE_OP_LOAD_FIELD_U16 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U16, | |
896 | [ BYTECODE_OP_LOAD_FIELD_U32 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U32, | |
897 | [ BYTECODE_OP_LOAD_FIELD_U64 ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_U64, | |
898 | [ BYTECODE_OP_LOAD_FIELD_STRING ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_STRING, | |
899 | [ BYTECODE_OP_LOAD_FIELD_SEQUENCE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_SEQUENCE, | |
900 | [ BYTECODE_OP_LOAD_FIELD_DOUBLE ] = &&LABEL_BYTECODE_OP_LOAD_FIELD_DOUBLE, | |
901 | ||
902 | [ BYTECODE_OP_UNARY_BIT_NOT ] = &&LABEL_BYTECODE_OP_UNARY_BIT_NOT, | |
903 | ||
904 | [ BYTECODE_OP_RETURN_S64 ] = &&LABEL_BYTECODE_OP_RETURN_S64, | |
07dfc1d0 MD |
905 | }; |
906 | #endif /* #ifndef INTERPRETER_USE_SWITCH */ | |
907 | ||
908 | START_OP | |
909 | ||
80c2a69a FD |
910 | OP(BYTECODE_OP_UNKNOWN): |
911 | OP(BYTECODE_OP_LOAD_FIELD_REF): | |
912 | OP(BYTECODE_OP_GET_CONTEXT_REF): | |
07dfc1d0 MD |
913 | #ifdef INTERPRETER_USE_SWITCH |
914 | default: | |
915 | #endif /* INTERPRETER_USE_SWITCH */ | |
80c2a69a FD |
916 | printk(KERN_WARNING "LTTng: bytecode: unknown bytecode op %u\n", |
917 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
918 | ret = -EINVAL; |
919 | goto end; | |
920 | ||
80c2a69a FD |
921 | OP(BYTECODE_OP_RETURN): |
922 | OP(BYTECODE_OP_RETURN_S64): | |
923 | /* LTTNG_INTERPRETER_DISCARD or LTTNG_INTERPRETER_RECORD_FLAG */ | |
d644d1df FD |
924 | switch (estack_ax_t) { |
925 | case REG_S64: | |
1242217a | 926 | case REG_U64: |
d644d1df FD |
927 | retval = !!estack_ax_v; |
928 | break; | |
929 | case REG_DOUBLE: | |
930 | case REG_STRING: | |
931 | case REG_PTR: | |
03cb0cdd FD |
932 | if (!output) { |
933 | ret = -EINVAL; | |
934 | goto end; | |
935 | } | |
936 | retval = 0; | |
937 | break; | |
d644d1df FD |
938 | case REG_STAR_GLOB_STRING: |
939 | case REG_TYPE_UNKNOWN: | |
940 | ret = -EINVAL; | |
941 | goto end; | |
942 | } | |
07dfc1d0 MD |
943 | ret = 0; |
944 | goto end; | |
945 | ||
946 | /* binary */ | |
80c2a69a FD |
947 | OP(BYTECODE_OP_MUL): |
948 | OP(BYTECODE_OP_DIV): | |
949 | OP(BYTECODE_OP_MOD): | |
950 | OP(BYTECODE_OP_PLUS): | |
951 | OP(BYTECODE_OP_MINUS): | |
952 | printk(KERN_WARNING "LTTng: bytecode: unsupported bytecode op %u\n", | |
953 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
954 | ret = -EINVAL; |
955 | goto end; | |
956 | ||
80c2a69a FD |
957 | OP(BYTECODE_OP_EQ): |
958 | OP(BYTECODE_OP_NE): | |
959 | OP(BYTECODE_OP_GT): | |
960 | OP(BYTECODE_OP_LT): | |
961 | OP(BYTECODE_OP_GE): | |
962 | OP(BYTECODE_OP_LE): | |
963 | printk(KERN_WARNING "LTTng: bytecode: unsupported non-specialized bytecode op %u\n", | |
964 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
965 | ret = -EINVAL; |
966 | goto end; | |
967 | ||
80c2a69a | 968 | OP(BYTECODE_OP_EQ_STRING): |
07dfc1d0 MD |
969 | { |
970 | int res; | |
971 | ||
972 | res = (stack_strcmp(stack, top, "==") == 0); | |
d644d1df | 973 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 974 | estack_ax_v = res; |
d644d1df | 975 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
976 | next_pc += sizeof(struct binary_op); |
977 | PO; | |
978 | } | |
80c2a69a | 979 | OP(BYTECODE_OP_NE_STRING): |
07dfc1d0 MD |
980 | { |
981 | int res; | |
982 | ||
983 | res = (stack_strcmp(stack, top, "!=") != 0); | |
d644d1df | 984 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 985 | estack_ax_v = res; |
d644d1df | 986 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
987 | next_pc += sizeof(struct binary_op); |
988 | PO; | |
989 | } | |
80c2a69a | 990 | OP(BYTECODE_OP_GT_STRING): |
07dfc1d0 MD |
991 | { |
992 | int res; | |
993 | ||
994 | res = (stack_strcmp(stack, top, ">") > 0); | |
d644d1df | 995 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 996 | estack_ax_v = res; |
d644d1df | 997 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
998 | next_pc += sizeof(struct binary_op); |
999 | PO; | |
1000 | } | |
80c2a69a | 1001 | OP(BYTECODE_OP_LT_STRING): |
07dfc1d0 MD |
1002 | { |
1003 | int res; | |
1004 | ||
1005 | res = (stack_strcmp(stack, top, "<") < 0); | |
d644d1df | 1006 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1007 | estack_ax_v = res; |
d644d1df | 1008 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1009 | next_pc += sizeof(struct binary_op); |
1010 | PO; | |
1011 | } | |
80c2a69a | 1012 | OP(BYTECODE_OP_GE_STRING): |
07dfc1d0 MD |
1013 | { |
1014 | int res; | |
1015 | ||
1016 | res = (stack_strcmp(stack, top, ">=") >= 0); | |
d644d1df | 1017 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1018 | estack_ax_v = res; |
d644d1df | 1019 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1020 | next_pc += sizeof(struct binary_op); |
1021 | PO; | |
1022 | } | |
80c2a69a | 1023 | OP(BYTECODE_OP_LE_STRING): |
07dfc1d0 MD |
1024 | { |
1025 | int res; | |
1026 | ||
1027 | res = (stack_strcmp(stack, top, "<=") <= 0); | |
d644d1df | 1028 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1029 | estack_ax_v = res; |
d644d1df | 1030 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1031 | next_pc += sizeof(struct binary_op); |
1032 | PO; | |
1033 | } | |
1034 | ||
80c2a69a | 1035 | OP(BYTECODE_OP_EQ_STAR_GLOB_STRING): |
02aca193 PP |
1036 | { |
1037 | int res; | |
1038 | ||
1039 | res = (stack_star_glob_match(stack, top, "==") == 0); | |
d644d1df | 1040 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
02aca193 | 1041 | estack_ax_v = res; |
d644d1df | 1042 | estack_ax_t = REG_S64; |
02aca193 PP |
1043 | next_pc += sizeof(struct binary_op); |
1044 | PO; | |
1045 | } | |
80c2a69a | 1046 | OP(BYTECODE_OP_NE_STAR_GLOB_STRING): |
02aca193 PP |
1047 | { |
1048 | int res; | |
1049 | ||
1050 | res = (stack_star_glob_match(stack, top, "!=") != 0); | |
d644d1df | 1051 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
02aca193 | 1052 | estack_ax_v = res; |
d644d1df | 1053 | estack_ax_t = REG_S64; |
02aca193 PP |
1054 | next_pc += sizeof(struct binary_op); |
1055 | PO; | |
1056 | } | |
1057 | ||
80c2a69a | 1058 | OP(BYTECODE_OP_EQ_S64): |
07dfc1d0 MD |
1059 | { |
1060 | int res; | |
1061 | ||
1062 | res = (estack_bx_v == estack_ax_v); | |
d644d1df | 1063 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1064 | estack_ax_v = res; |
d644d1df | 1065 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1066 | next_pc += sizeof(struct binary_op); |
1067 | PO; | |
1068 | } | |
80c2a69a | 1069 | OP(BYTECODE_OP_NE_S64): |
07dfc1d0 MD |
1070 | { |
1071 | int res; | |
1072 | ||
1073 | res = (estack_bx_v != estack_ax_v); | |
d644d1df | 1074 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1075 | estack_ax_v = res; |
d644d1df | 1076 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1077 | next_pc += sizeof(struct binary_op); |
1078 | PO; | |
1079 | } | |
80c2a69a | 1080 | OP(BYTECODE_OP_GT_S64): |
07dfc1d0 MD |
1081 | { |
1082 | int res; | |
1083 | ||
1084 | res = (estack_bx_v > estack_ax_v); | |
d644d1df | 1085 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1086 | estack_ax_v = res; |
d644d1df | 1087 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1088 | next_pc += sizeof(struct binary_op); |
1089 | PO; | |
1090 | } | |
80c2a69a | 1091 | OP(BYTECODE_OP_LT_S64): |
07dfc1d0 MD |
1092 | { |
1093 | int res; | |
1094 | ||
1095 | res = (estack_bx_v < estack_ax_v); | |
d644d1df | 1096 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1097 | estack_ax_v = res; |
d644d1df | 1098 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1099 | next_pc += sizeof(struct binary_op); |
1100 | PO; | |
1101 | } | |
80c2a69a | 1102 | OP(BYTECODE_OP_GE_S64): |
07dfc1d0 MD |
1103 | { |
1104 | int res; | |
1105 | ||
1106 | res = (estack_bx_v >= estack_ax_v); | |
d644d1df | 1107 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1108 | estack_ax_v = res; |
d644d1df | 1109 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1110 | next_pc += sizeof(struct binary_op); |
1111 | PO; | |
1112 | } | |
80c2a69a | 1113 | OP(BYTECODE_OP_LE_S64): |
07dfc1d0 MD |
1114 | { |
1115 | int res; | |
1116 | ||
1117 | res = (estack_bx_v <= estack_ax_v); | |
d644d1df | 1118 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1119 | estack_ax_v = res; |
d644d1df | 1120 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1121 | next_pc += sizeof(struct binary_op); |
1122 | PO; | |
1123 | } | |
1124 | ||
80c2a69a FD |
1125 | OP(BYTECODE_OP_EQ_DOUBLE): |
1126 | OP(BYTECODE_OP_NE_DOUBLE): | |
1127 | OP(BYTECODE_OP_GT_DOUBLE): | |
1128 | OP(BYTECODE_OP_LT_DOUBLE): | |
1129 | OP(BYTECODE_OP_GE_DOUBLE): | |
1130 | OP(BYTECODE_OP_LE_DOUBLE): | |
07dfc1d0 MD |
1131 | { |
1132 | BUG_ON(1); | |
1133 | PO; | |
1134 | } | |
1135 | ||
1136 | /* Mixed S64-double binary comparators */ | |
80c2a69a FD |
1137 | OP(BYTECODE_OP_EQ_DOUBLE_S64): |
1138 | OP(BYTECODE_OP_NE_DOUBLE_S64): | |
1139 | OP(BYTECODE_OP_GT_DOUBLE_S64): | |
1140 | OP(BYTECODE_OP_LT_DOUBLE_S64): | |
1141 | OP(BYTECODE_OP_GE_DOUBLE_S64): | |
1142 | OP(BYTECODE_OP_LE_DOUBLE_S64): | |
1143 | OP(BYTECODE_OP_EQ_S64_DOUBLE): | |
1144 | OP(BYTECODE_OP_NE_S64_DOUBLE): | |
1145 | OP(BYTECODE_OP_GT_S64_DOUBLE): | |
1146 | OP(BYTECODE_OP_LT_S64_DOUBLE): | |
1147 | OP(BYTECODE_OP_GE_S64_DOUBLE): | |
1148 | OP(BYTECODE_OP_LE_S64_DOUBLE): | |
07dfc1d0 MD |
1149 | { |
1150 | BUG_ON(1); | |
1151 | PO; | |
1152 | } | |
80c2a69a | 1153 | OP(BYTECODE_OP_BIT_RSHIFT): |
e16c054b MD |
1154 | { |
1155 | int64_t res; | |
1156 | ||
d644d1df FD |
1157 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1158 | ret = -EINVAL; | |
1159 | goto end; | |
1160 | } | |
1161 | ||
ea13ec96 MD |
1162 | /* Catch undefined behavior. */ |
1163 | if (unlikely(estack_ax_v < 0 || estack_ax_v >= 64)) { | |
1164 | ret = -EINVAL; | |
1165 | goto end; | |
1166 | } | |
f8d42740 | 1167 | res = ((uint64_t) estack_bx_v >> (uint32_t) estack_ax_v); |
d644d1df | 1168 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
e16c054b | 1169 | estack_ax_v = res; |
1242217a | 1170 | estack_ax_t = REG_U64; |
e16c054b MD |
1171 | next_pc += sizeof(struct binary_op); |
1172 | PO; | |
1173 | } | |
80c2a69a | 1174 | OP(BYTECODE_OP_BIT_LSHIFT): |
e16c054b MD |
1175 | { |
1176 | int64_t res; | |
1177 | ||
d644d1df FD |
1178 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1179 | ret = -EINVAL; | |
1180 | goto end; | |
1181 | } | |
1182 | ||
ea13ec96 MD |
1183 | /* Catch undefined behavior. */ |
1184 | if (unlikely(estack_ax_v < 0 || estack_ax_v >= 64)) { | |
1185 | ret = -EINVAL; | |
1186 | goto end; | |
1187 | } | |
f8d42740 | 1188 | res = ((uint64_t) estack_bx_v << (uint32_t) estack_ax_v); |
d644d1df | 1189 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
e16c054b | 1190 | estack_ax_v = res; |
1242217a | 1191 | estack_ax_t = REG_U64; |
e16c054b MD |
1192 | next_pc += sizeof(struct binary_op); |
1193 | PO; | |
1194 | } | |
80c2a69a | 1195 | OP(BYTECODE_OP_BIT_AND): |
3834b99f MD |
1196 | { |
1197 | int64_t res; | |
1198 | ||
d644d1df FD |
1199 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1200 | ret = -EINVAL; | |
1201 | goto end; | |
1202 | } | |
1203 | ||
f8d42740 | 1204 | res = ((uint64_t) estack_bx_v & (uint64_t) estack_ax_v); |
d644d1df | 1205 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1206 | estack_ax_v = res; |
1242217a | 1207 | estack_ax_t = REG_U64; |
3834b99f MD |
1208 | next_pc += sizeof(struct binary_op); |
1209 | PO; | |
1210 | } | |
80c2a69a | 1211 | OP(BYTECODE_OP_BIT_OR): |
3834b99f MD |
1212 | { |
1213 | int64_t res; | |
1214 | ||
d644d1df FD |
1215 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1216 | ret = -EINVAL; | |
1217 | goto end; | |
1218 | } | |
1219 | ||
f8d42740 | 1220 | res = ((uint64_t) estack_bx_v | (uint64_t) estack_ax_v); |
d644d1df | 1221 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1222 | estack_ax_v = res; |
1242217a | 1223 | estack_ax_t = REG_U64; |
3834b99f MD |
1224 | next_pc += sizeof(struct binary_op); |
1225 | PO; | |
1226 | } | |
80c2a69a | 1227 | OP(BYTECODE_OP_BIT_XOR): |
3834b99f MD |
1228 | { |
1229 | int64_t res; | |
1230 | ||
d644d1df FD |
1231 | if (!IS_INTEGER_REGISTER(estack_ax_t) || !IS_INTEGER_REGISTER(estack_bx_t)) { |
1232 | ret = -EINVAL; | |
1233 | goto end; | |
1234 | } | |
1235 | ||
f8d42740 | 1236 | res = ((uint64_t) estack_bx_v ^ (uint64_t) estack_ax_v); |
d644d1df | 1237 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1238 | estack_ax_v = res; |
1242217a | 1239 | estack_ax_t = REG_U64; |
3834b99f MD |
1240 | next_pc += sizeof(struct binary_op); |
1241 | PO; | |
1242 | } | |
07dfc1d0 MD |
1243 | |
1244 | /* unary */ | |
80c2a69a FD |
1245 | OP(BYTECODE_OP_UNARY_PLUS): |
1246 | OP(BYTECODE_OP_UNARY_MINUS): | |
1247 | OP(BYTECODE_OP_UNARY_NOT): | |
1248 | printk(KERN_WARNING "LTTng: bytecode: unsupported non-specialized bytecode op %u\n", | |
1249 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
1250 | ret = -EINVAL; |
1251 | goto end; | |
1252 | ||
1253 | ||
80c2a69a | 1254 | OP(BYTECODE_OP_UNARY_BIT_NOT): |
e16c054b | 1255 | { |
f8d42740 | 1256 | estack_ax_v = ~(uint64_t) estack_ax_v; |
d644d1df | 1257 | estack_ax_t = REG_S64; |
e16c054b MD |
1258 | next_pc += sizeof(struct unary_op); |
1259 | PO; | |
1260 | } | |
1261 | ||
80c2a69a | 1262 | OP(BYTECODE_OP_UNARY_PLUS_S64): |
07dfc1d0 MD |
1263 | { |
1264 | next_pc += sizeof(struct unary_op); | |
1265 | PO; | |
1266 | } | |
80c2a69a | 1267 | OP(BYTECODE_OP_UNARY_MINUS_S64): |
07dfc1d0 MD |
1268 | { |
1269 | estack_ax_v = -estack_ax_v; | |
d644d1df | 1270 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1271 | next_pc += sizeof(struct unary_op); |
1272 | PO; | |
1273 | } | |
80c2a69a FD |
1274 | OP(BYTECODE_OP_UNARY_PLUS_DOUBLE): |
1275 | OP(BYTECODE_OP_UNARY_MINUS_DOUBLE): | |
07dfc1d0 MD |
1276 | { |
1277 | BUG_ON(1); | |
1278 | PO; | |
1279 | } | |
80c2a69a | 1280 | OP(BYTECODE_OP_UNARY_NOT_S64): |
07dfc1d0 MD |
1281 | { |
1282 | estack_ax_v = !estack_ax_v; | |
d644d1df | 1283 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1284 | next_pc += sizeof(struct unary_op); |
1285 | PO; | |
1286 | } | |
80c2a69a | 1287 | OP(BYTECODE_OP_UNARY_NOT_DOUBLE): |
07dfc1d0 MD |
1288 | { |
1289 | BUG_ON(1); | |
1290 | PO; | |
1291 | } | |
1292 | ||
1293 | /* logical */ | |
80c2a69a | 1294 | OP(BYTECODE_OP_AND): |
07dfc1d0 MD |
1295 | { |
1296 | struct logical_op *insn = (struct logical_op *) pc; | |
1297 | ||
1298 | /* If AX is 0, skip and evaluate to 0 */ | |
1299 | if (unlikely(estack_ax_v == 0)) { | |
1300 | dbg_printk("Jumping to bytecode offset %u\n", | |
1301 | (unsigned int) insn->skip_offset); | |
1302 | next_pc = start_pc + insn->skip_offset; | |
1303 | } else { | |
1304 | /* Pop 1 when jump not taken */ | |
d644d1df | 1305 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 MD |
1306 | next_pc += sizeof(struct logical_op); |
1307 | } | |
1308 | PO; | |
1309 | } | |
80c2a69a | 1310 | OP(BYTECODE_OP_OR): |
07dfc1d0 MD |
1311 | { |
1312 | struct logical_op *insn = (struct logical_op *) pc; | |
1313 | ||
1314 | /* If AX is nonzero, skip and evaluate to 1 */ | |
1315 | ||
1316 | if (unlikely(estack_ax_v != 0)) { | |
1317 | estack_ax_v = 1; | |
1318 | dbg_printk("Jumping to bytecode offset %u\n", | |
1319 | (unsigned int) insn->skip_offset); | |
1320 | next_pc = start_pc + insn->skip_offset; | |
1321 | } else { | |
1322 | /* Pop 1 when jump not taken */ | |
d644d1df | 1323 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 MD |
1324 | next_pc += sizeof(struct logical_op); |
1325 | } | |
1326 | PO; | |
1327 | } | |
1328 | ||
1329 | ||
1330 | /* load field ref */ | |
80c2a69a | 1331 | OP(BYTECODE_OP_LOAD_FIELD_REF_STRING): |
07dfc1d0 MD |
1332 | { |
1333 | struct load_op *insn = (struct load_op *) pc; | |
1334 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1335 | ||
1336 | dbg_printk("load field ref offset %u type string\n", | |
1337 | ref->offset); | |
d644d1df | 1338 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1339 | estack_ax(stack, top)->u.s.str = |
03cb0cdd | 1340 | *(const char * const *) &interpreter_stack_data[ref->offset]; |
07dfc1d0 | 1341 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
80c2a69a | 1342 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
07dfc1d0 MD |
1343 | ret = -EINVAL; |
1344 | goto end; | |
1345 | } | |
cbc19040 | 1346 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1347 | estack_ax(stack, top)->u.s.literal_type = |
1348 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1349 | estack_ax(stack, top)->u.s.user = 0; |
d644d1df | 1350 | estack_ax(stack, top)->type = REG_STRING; |
07dfc1d0 MD |
1351 | dbg_printk("ref load string %s\n", estack_ax(stack, top)->u.s.str); |
1352 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1353 | PO; | |
1354 | } | |
1355 | ||
80c2a69a | 1356 | OP(BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE): |
07dfc1d0 MD |
1357 | { |
1358 | struct load_op *insn = (struct load_op *) pc; | |
1359 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1360 | ||
1361 | dbg_printk("load field ref offset %u type sequence\n", | |
1362 | ref->offset); | |
d644d1df | 1363 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1364 | estack_ax(stack, top)->u.s.seq_len = |
03cb0cdd | 1365 | *(unsigned long *) &interpreter_stack_data[ref->offset]; |
07dfc1d0 | 1366 | estack_ax(stack, top)->u.s.str = |
03cb0cdd | 1367 | *(const char **) (&interpreter_stack_data[ref->offset |
07dfc1d0 MD |
1368 | + sizeof(unsigned long)]); |
1369 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1370 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
07dfc1d0 MD |
1371 | ret = -EINVAL; |
1372 | goto end; | |
1373 | } | |
02aca193 PP |
1374 | estack_ax(stack, top)->u.s.literal_type = |
1375 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1376 | estack_ax(stack, top)->u.s.user = 0; |
07dfc1d0 MD |
1377 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1378 | PO; | |
1379 | } | |
1380 | ||
80c2a69a | 1381 | OP(BYTECODE_OP_LOAD_FIELD_REF_S64): |
07dfc1d0 MD |
1382 | { |
1383 | struct load_op *insn = (struct load_op *) pc; | |
1384 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1385 | ||
1386 | dbg_printk("load field ref offset %u type s64\n", | |
1387 | ref->offset); | |
d644d1df | 1388 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1389 | estack_ax_v = |
03cb0cdd | 1390 | ((struct literal_numeric *) &interpreter_stack_data[ref->offset])->v; |
d644d1df | 1391 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1392 | dbg_printk("ref load s64 %lld\n", |
1393 | (long long) estack_ax_v); | |
1394 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1395 | PO; | |
1396 | } | |
1397 | ||
80c2a69a | 1398 | OP(BYTECODE_OP_LOAD_FIELD_REF_DOUBLE): |
07dfc1d0 MD |
1399 | { |
1400 | BUG_ON(1); | |
1401 | PO; | |
1402 | } | |
1403 | ||
1404 | /* load from immediate operand */ | |
80c2a69a | 1405 | OP(BYTECODE_OP_LOAD_STRING): |
07dfc1d0 MD |
1406 | { |
1407 | struct load_op *insn = (struct load_op *) pc; | |
1408 | ||
1409 | dbg_printk("load string %s\n", insn->data); | |
d644d1df | 1410 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1411 | estack_ax(stack, top)->u.s.str = insn->data; |
cbc19040 | 1412 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1413 | estack_ax(stack, top)->u.s.literal_type = |
1414 | ESTACK_STRING_LITERAL_TYPE_PLAIN; | |
1415 | estack_ax(stack, top)->u.s.user = 0; | |
1416 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; | |
1417 | PO; | |
1418 | } | |
1419 | ||
80c2a69a | 1420 | OP(BYTECODE_OP_LOAD_STAR_GLOB_STRING): |
02aca193 PP |
1421 | { |
1422 | struct load_op *insn = (struct load_op *) pc; | |
1423 | ||
1424 | dbg_printk("load globbing pattern %s\n", insn->data); | |
d644d1df | 1425 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
02aca193 | 1426 | estack_ax(stack, top)->u.s.str = insn->data; |
cbc19040 | 1427 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1428 | estack_ax(stack, top)->u.s.literal_type = |
1429 | ESTACK_STRING_LITERAL_TYPE_STAR_GLOB; | |
f127e61e | 1430 | estack_ax(stack, top)->u.s.user = 0; |
07dfc1d0 MD |
1431 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
1432 | PO; | |
1433 | } | |
1434 | ||
80c2a69a | 1435 | OP(BYTECODE_OP_LOAD_S64): |
07dfc1d0 MD |
1436 | { |
1437 | struct load_op *insn = (struct load_op *) pc; | |
1438 | ||
d644d1df | 1439 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1440 | estack_ax_v = ((struct literal_numeric *) insn->data)->v; |
d644d1df | 1441 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1442 | dbg_printk("load s64 %lld\n", |
1443 | (long long) estack_ax_v); | |
1444 | next_pc += sizeof(struct load_op) | |
1445 | + sizeof(struct literal_numeric); | |
1446 | PO; | |
1447 | } | |
1448 | ||
80c2a69a | 1449 | OP(BYTECODE_OP_LOAD_DOUBLE): |
07dfc1d0 MD |
1450 | { |
1451 | BUG_ON(1); | |
1452 | PO; | |
1453 | } | |
1454 | ||
1455 | /* cast */ | |
80c2a69a FD |
1456 | OP(BYTECODE_OP_CAST_TO_S64): |
1457 | printk(KERN_WARNING "LTTng: bytecode: unsupported non-specialized bytecode op %u\n", | |
1458 | (unsigned int) *(bytecode_opcode_t *) pc); | |
07dfc1d0 MD |
1459 | ret = -EINVAL; |
1460 | goto end; | |
1461 | ||
80c2a69a | 1462 | OP(BYTECODE_OP_CAST_DOUBLE_TO_S64): |
07dfc1d0 MD |
1463 | { |
1464 | BUG_ON(1); | |
1465 | PO; | |
1466 | } | |
1467 | ||
80c2a69a | 1468 | OP(BYTECODE_OP_CAST_NOP): |
07dfc1d0 MD |
1469 | { |
1470 | next_pc += sizeof(struct cast_op); | |
1471 | PO; | |
1472 | } | |
1473 | ||
1474 | /* get context ref */ | |
80c2a69a | 1475 | OP(BYTECODE_OP_GET_CONTEXT_REF_STRING): |
07dfc1d0 MD |
1476 | { |
1477 | struct load_op *insn = (struct load_op *) pc; | |
1478 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1479 | struct lttng_ctx_field *ctx_field; | |
1480 | union lttng_ctx_value v; | |
1481 | ||
1482 | dbg_printk("get context ref offset %u type string\n", | |
1483 | ref->offset); | |
1484 | ctx_field = <tng_static_ctx->fields[ref->offset]; | |
79150a49 | 1485 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); |
d644d1df | 1486 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 MD |
1487 | estack_ax(stack, top)->u.s.str = v.str; |
1488 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1489 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
07dfc1d0 MD |
1490 | ret = -EINVAL; |
1491 | goto end; | |
1492 | } | |
cbc19040 | 1493 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1494 | estack_ax(stack, top)->u.s.literal_type = |
1495 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1496 | estack_ax(stack, top)->u.s.user = 0; |
d644d1df | 1497 | estack_ax(stack, top)->type = REG_STRING; |
07dfc1d0 MD |
1498 | dbg_printk("ref get context string %s\n", estack_ax(stack, top)->u.s.str); |
1499 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1500 | PO; | |
1501 | } | |
1502 | ||
80c2a69a | 1503 | OP(BYTECODE_OP_GET_CONTEXT_REF_S64): |
07dfc1d0 MD |
1504 | { |
1505 | struct load_op *insn = (struct load_op *) pc; | |
1506 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1507 | struct lttng_ctx_field *ctx_field; | |
1508 | union lttng_ctx_value v; | |
1509 | ||
1510 | dbg_printk("get context ref offset %u type s64\n", | |
1511 | ref->offset); | |
1512 | ctx_field = <tng_static_ctx->fields[ref->offset]; | |
79150a49 | 1513 | ctx_field->get_value(ctx_field, lttng_probe_ctx, &v); |
d644d1df | 1514 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
07dfc1d0 | 1515 | estack_ax_v = v.s64; |
d644d1df | 1516 | estack_ax_t = REG_S64; |
07dfc1d0 MD |
1517 | dbg_printk("ref get context s64 %lld\n", |
1518 | (long long) estack_ax_v); | |
1519 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1520 | PO; | |
1521 | } | |
1522 | ||
80c2a69a | 1523 | OP(BYTECODE_OP_GET_CONTEXT_REF_DOUBLE): |
07dfc1d0 MD |
1524 | { |
1525 | BUG_ON(1); | |
1526 | PO; | |
1527 | } | |
1528 | ||
f127e61e | 1529 | /* load userspace field ref */ |
80c2a69a | 1530 | OP(BYTECODE_OP_LOAD_FIELD_REF_USER_STRING): |
f127e61e MD |
1531 | { |
1532 | struct load_op *insn = (struct load_op *) pc; | |
1533 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1534 | ||
1535 | dbg_printk("load field ref offset %u type user string\n", | |
1536 | ref->offset); | |
d644d1df | 1537 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
5b4ad89f | 1538 | estack_ax(stack, top)->u.s.user_str = |
03cb0cdd | 1539 | *(const char * const *) &interpreter_stack_data[ref->offset]; |
acbe9250 | 1540 | if (unlikely(!estack_ax(stack, top)->u.s.user_str)) { |
80c2a69a | 1541 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
f127e61e MD |
1542 | ret = -EINVAL; |
1543 | goto end; | |
1544 | } | |
cbc19040 | 1545 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
02aca193 PP |
1546 | estack_ax(stack, top)->u.s.literal_type = |
1547 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e | 1548 | estack_ax(stack, top)->u.s.user = 1; |
d644d1df | 1549 | estack_ax(stack, top)->type = REG_STRING; |
acbe9250 | 1550 | dbg_load_ref_user_str_printk(estack_ax(stack, top)); |
f127e61e MD |
1551 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
1552 | PO; | |
1553 | } | |
1554 | ||
80c2a69a | 1555 | OP(BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE): |
f127e61e MD |
1556 | { |
1557 | struct load_op *insn = (struct load_op *) pc; | |
1558 | struct field_ref *ref = (struct field_ref *) insn->data; | |
1559 | ||
1560 | dbg_printk("load field ref offset %u type user sequence\n", | |
1561 | ref->offset); | |
d644d1df | 1562 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
f127e61e | 1563 | estack_ax(stack, top)->u.s.seq_len = |
03cb0cdd | 1564 | *(unsigned long *) &interpreter_stack_data[ref->offset]; |
5b4ad89f | 1565 | estack_ax(stack, top)->u.s.user_str = |
03cb0cdd | 1566 | *(const char **) (&interpreter_stack_data[ref->offset |
f127e61e | 1567 | + sizeof(unsigned long)]); |
acbe9250 | 1568 | if (unlikely(!estack_ax(stack, top)->u.s.user_str)) { |
80c2a69a | 1569 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
f127e61e MD |
1570 | ret = -EINVAL; |
1571 | goto end; | |
1572 | } | |
02aca193 PP |
1573 | estack_ax(stack, top)->u.s.literal_type = |
1574 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
f127e61e MD |
1575 | estack_ax(stack, top)->u.s.user = 1; |
1576 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); | |
1577 | PO; | |
1578 | } | |
1579 | ||
80c2a69a | 1580 | OP(BYTECODE_OP_GET_CONTEXT_ROOT): |
3834b99f MD |
1581 | { |
1582 | dbg_printk("op get context root\n"); | |
d644d1df | 1583 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
3834b99f MD |
1584 | estack_ax(stack, top)->u.ptr.type = LOAD_ROOT_CONTEXT; |
1585 | /* "field" only needed for variants. */ | |
1586 | estack_ax(stack, top)->u.ptr.field = NULL; | |
d644d1df | 1587 | estack_ax(stack, top)->type = REG_PTR; |
3834b99f MD |
1588 | next_pc += sizeof(struct load_op); |
1589 | PO; | |
1590 | } | |
1591 | ||
80c2a69a | 1592 | OP(BYTECODE_OP_GET_APP_CONTEXT_ROOT): |
3834b99f MD |
1593 | { |
1594 | BUG_ON(1); | |
1595 | PO; | |
1596 | } | |
1597 | ||
80c2a69a | 1598 | OP(BYTECODE_OP_GET_PAYLOAD_ROOT): |
3834b99f MD |
1599 | { |
1600 | dbg_printk("op get app payload root\n"); | |
d644d1df | 1601 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
3834b99f | 1602 | estack_ax(stack, top)->u.ptr.type = LOAD_ROOT_PAYLOAD; |
03cb0cdd | 1603 | estack_ax(stack, top)->u.ptr.ptr = interpreter_stack_data; |
3834b99f MD |
1604 | /* "field" only needed for variants. */ |
1605 | estack_ax(stack, top)->u.ptr.field = NULL; | |
d644d1df | 1606 | estack_ax(stack, top)->type = REG_PTR; |
3834b99f MD |
1607 | next_pc += sizeof(struct load_op); |
1608 | PO; | |
1609 | } | |
1610 | ||
80c2a69a | 1611 | OP(BYTECODE_OP_GET_SYMBOL): |
3834b99f MD |
1612 | { |
1613 | dbg_printk("op get symbol\n"); | |
1614 | switch (estack_ax(stack, top)->u.ptr.type) { | |
1615 | case LOAD_OBJECT: | |
80c2a69a | 1616 | printk(KERN_WARNING "LTTng: bytecode: Nested fields not implemented yet.\n"); |
3834b99f MD |
1617 | ret = -EINVAL; |
1618 | goto end; | |
1619 | case LOAD_ROOT_CONTEXT: | |
1620 | case LOAD_ROOT_APP_CONTEXT: | |
1621 | case LOAD_ROOT_PAYLOAD: | |
1622 | /* | |
1623 | * symbol lookup is performed by | |
1624 | * specialization. | |
1625 | */ | |
1626 | ret = -EINVAL; | |
1627 | goto end; | |
1628 | } | |
1629 | next_pc += sizeof(struct load_op) + sizeof(struct get_symbol); | |
1630 | PO; | |
1631 | } | |
1632 | ||
80c2a69a | 1633 | OP(BYTECODE_OP_GET_SYMBOL_FIELD): |
3834b99f MD |
1634 | { |
1635 | /* | |
1636 | * Used for first variant encountered in a | |
1637 | * traversal. Variants are not implemented yet. | |
1638 | */ | |
1639 | ret = -EINVAL; | |
1640 | goto end; | |
1641 | } | |
1642 | ||
80c2a69a | 1643 | OP(BYTECODE_OP_GET_INDEX_U16): |
3834b99f MD |
1644 | { |
1645 | struct load_op *insn = (struct load_op *) pc; | |
1646 | struct get_index_u16 *index = (struct get_index_u16 *) insn->data; | |
1647 | ||
1648 | dbg_printk("op get index u16\n"); | |
1649 | ret = dynamic_get_index(lttng_probe_ctx, bytecode, index->index, estack_ax(stack, top)); | |
1650 | if (ret) | |
1651 | goto end; | |
1652 | estack_ax_v = estack_ax(stack, top)->u.v; | |
d644d1df | 1653 | estack_ax_t = estack_ax(stack, top)->type; |
3834b99f MD |
1654 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16); |
1655 | PO; | |
1656 | } | |
1657 | ||
80c2a69a | 1658 | OP(BYTECODE_OP_GET_INDEX_U64): |
3834b99f MD |
1659 | { |
1660 | struct load_op *insn = (struct load_op *) pc; | |
1661 | struct get_index_u64 *index = (struct get_index_u64 *) insn->data; | |
1662 | ||
1663 | dbg_printk("op get index u64\n"); | |
1664 | ret = dynamic_get_index(lttng_probe_ctx, bytecode, index->index, estack_ax(stack, top)); | |
1665 | if (ret) | |
1666 | goto end; | |
1667 | estack_ax_v = estack_ax(stack, top)->u.v; | |
d644d1df | 1668 | estack_ax_t = estack_ax(stack, top)->type; |
3834b99f MD |
1669 | next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64); |
1670 | PO; | |
1671 | } | |
1672 | ||
80c2a69a | 1673 | OP(BYTECODE_OP_LOAD_FIELD): |
3834b99f MD |
1674 | { |
1675 | dbg_printk("op load field\n"); | |
1676 | ret = dynamic_load_field(estack_ax(stack, top)); | |
1677 | if (ret) | |
1678 | goto end; | |
1679 | estack_ax_v = estack_ax(stack, top)->u.v; | |
d644d1df | 1680 | estack_ax_t = estack_ax(stack, top)->type; |
3834b99f MD |
1681 | next_pc += sizeof(struct load_op); |
1682 | PO; | |
1683 | } | |
1684 | ||
80c2a69a | 1685 | OP(BYTECODE_OP_LOAD_FIELD_S8): |
3834b99f MD |
1686 | { |
1687 | dbg_printk("op load field s8\n"); | |
1688 | ||
1689 | estack_ax_v = *(int8_t *) estack_ax(stack, top)->u.ptr.ptr; | |
d644d1df | 1690 | estack_ax_t = REG_S64; |
3834b99f MD |
1691 | next_pc += sizeof(struct load_op); |
1692 | PO; | |
1693 | } | |
80c2a69a | 1694 | OP(BYTECODE_OP_LOAD_FIELD_S16): |
3834b99f MD |
1695 | { |
1696 | dbg_printk("op load field s16\n"); | |
1697 | ||
1698 | estack_ax_v = *(int16_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_S32): |
3834b99f MD |
1704 | { |
1705 | dbg_printk("op load field s32\n"); | |
1706 | ||
1707 | estack_ax_v = *(int32_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_S64): |
3834b99f MD |
1713 | { |
1714 | dbg_printk("op load field s64\n"); | |
1715 | ||
1716 | estack_ax_v = *(int64_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_U8): |
3834b99f MD |
1722 | { |
1723 | dbg_printk("op load field u8\n"); | |
1724 | ||
1725 | estack_ax_v = *(uint8_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_U16): |
3834b99f MD |
1731 | { |
1732 | dbg_printk("op load field u16\n"); | |
1733 | ||
1734 | estack_ax_v = *(uint16_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_U32): |
3834b99f MD |
1740 | { |
1741 | dbg_printk("op load field u32\n"); | |
1742 | ||
1743 | estack_ax_v = *(uint32_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_U64): |
3834b99f MD |
1749 | { |
1750 | dbg_printk("op load field u64\n"); | |
1751 | ||
1752 | estack_ax_v = *(uint64_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_DOUBLE): |
3834b99f MD |
1758 | { |
1759 | ret = -EINVAL; | |
1760 | goto end; | |
1761 | } | |
1762 | ||
80c2a69a | 1763 | OP(BYTECODE_OP_LOAD_FIELD_STRING): |
3834b99f MD |
1764 | { |
1765 | const char *str; | |
1766 | ||
1767 | dbg_printk("op load field string\n"); | |
1768 | str = (const char *) estack_ax(stack, top)->u.ptr.ptr; | |
1769 | estack_ax(stack, top)->u.s.str = str; | |
1770 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1771 | dbg_printk("Bytecode warning: loading a NULL string.\n"); |
3834b99f MD |
1772 | ret = -EINVAL; |
1773 | goto end; | |
1774 | } | |
4efe037b | 1775 | estack_ax(stack, top)->u.s.seq_len = LTTNG_SIZE_MAX; |
3834b99f MD |
1776 | estack_ax(stack, top)->u.s.literal_type = |
1777 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 1778 | estack_ax(stack, top)->type = REG_STRING; |
3834b99f MD |
1779 | next_pc += sizeof(struct load_op); |
1780 | PO; | |
1781 | } | |
1782 | ||
80c2a69a | 1783 | OP(BYTECODE_OP_LOAD_FIELD_SEQUENCE): |
3834b99f MD |
1784 | { |
1785 | const char *ptr; | |
1786 | ||
1787 | dbg_printk("op load field string sequence\n"); | |
1788 | ptr = estack_ax(stack, top)->u.ptr.ptr; | |
1789 | estack_ax(stack, top)->u.s.seq_len = *(unsigned long *) ptr; | |
1790 | estack_ax(stack, top)->u.s.str = *(const char **) (ptr + sizeof(unsigned long)); | |
1791 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { | |
80c2a69a | 1792 | dbg_printk("Bytecode warning: loading a NULL sequence.\n"); |
3834b99f MD |
1793 | ret = -EINVAL; |
1794 | goto end; | |
1795 | } | |
1796 | estack_ax(stack, top)->u.s.literal_type = | |
1797 | ESTACK_STRING_LITERAL_TYPE_NONE; | |
d644d1df | 1798 | estack_ax(stack, top)->type = REG_STRING; |
3834b99f MD |
1799 | next_pc += sizeof(struct load_op); |
1800 | PO; | |
1801 | } | |
1802 | ||
07dfc1d0 MD |
1803 | END_OP |
1804 | end: | |
a93d4e71 | 1805 | /* Return _DISCARD on error. */ |
07dfc1d0 | 1806 | if (ret) |
80c2a69a | 1807 | return LTTNG_INTERPRETER_DISCARD; |
03cb0cdd FD |
1808 | |
1809 | if (output) { | |
1810 | return lttng_bytecode_interpret_format_output( | |
1811 | estack_ax(stack, top), output); | |
1812 | } | |
1813 | ||
07dfc1d0 MD |
1814 | return retval; |
1815 | } | |
03cb0cdd FD |
1816 | LTTNG_STACK_FRAME_NON_STANDARD(bytecode_interpret); |
1817 | ||
80c2a69a | 1818 | uint64_t lttng_bytecode_filter_interpret(void *filter_data, |
03cb0cdd FD |
1819 | struct lttng_probe_ctx *lttng_probe_ctx, |
1820 | const char *filter_stack_data) | |
1821 | { | |
1822 | return bytecode_interpret(filter_data, lttng_probe_ctx, | |
1823 | filter_stack_data, NULL); | |
1824 | } | |
07dfc1d0 | 1825 | |
99d223ad FD |
1826 | uint64_t lttng_bytecode_capture_interpret(void *capture_data, |
1827 | struct lttng_probe_ctx *lttng_probe_ctx, | |
1828 | const char *capture_stack_data, | |
1829 | struct lttng_interpreter_output *output) | |
1830 | { | |
1831 | return bytecode_interpret(capture_data, lttng_probe_ctx, | |
1832 | capture_stack_data, output); | |
1833 | } | |
1834 | ||
07dfc1d0 MD |
1835 | #undef START_OP |
1836 | #undef OP | |
1837 | #undef PO | |
1838 | #undef END_OP |