| 1 | /* |
| 2 | * lttng-filter-interpreter.c |
| 3 | * |
| 4 | * LTTng UST filter interpreter. |
| 5 | * |
| 6 | * Copyright (C) 2010-2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 7 | * |
| 8 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 9 | * of this software and associated documentation files (the "Software"), to deal |
| 10 | * in the Software without restriction, including without limitation the rights |
| 11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 12 | * copies of the Software, and to permit persons to whom the Software is |
| 13 | * furnished to do so, subject to the following conditions: |
| 14 | * |
| 15 | * The above copyright notice and this permission notice shall be included in |
| 16 | * all copies or substantial portions of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 24 | * SOFTWARE. |
| 25 | */ |
| 26 | |
| 27 | #define _LGPL_SOURCE |
| 28 | #include <urcu-pointer.h> |
| 29 | #include <stdint.h> |
| 30 | #include "lttng-filter.h" |
| 31 | #include "string-utils.h" |
| 32 | |
| 33 | /* |
| 34 | * -1: wildcard found. |
| 35 | * -2: unknown escape char. |
| 36 | * 0: normal char. |
| 37 | */ |
| 38 | |
| 39 | static |
| 40 | int parse_char(const char **p) |
| 41 | { |
| 42 | switch (**p) { |
| 43 | case '\\': |
| 44 | (*p)++; |
| 45 | switch (**p) { |
| 46 | case '\\': |
| 47 | case '*': |
| 48 | return 0; |
| 49 | default: |
| 50 | return -2; |
| 51 | } |
| 52 | case '*': |
| 53 | return -1; |
| 54 | default: |
| 55 | return 0; |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | /* |
| 60 | * Returns SIZE_MAX if the string is null-terminated, or the number of |
| 61 | * characters if not. |
| 62 | */ |
| 63 | static |
| 64 | size_t get_str_or_seq_len(const struct estack_entry *entry) |
| 65 | { |
| 66 | return entry->u.s.seq_len; |
| 67 | } |
| 68 | |
| 69 | static |
| 70 | int stack_star_glob_match(struct estack *stack, int top, const char *cmp_type) |
| 71 | { |
| 72 | const char *pattern; |
| 73 | const char *candidate; |
| 74 | size_t pattern_len; |
| 75 | size_t candidate_len; |
| 76 | |
| 77 | /* Find out which side is the pattern vs. the candidate. */ |
| 78 | if (estack_ax(stack, top)->u.s.literal_type == ESTACK_STRING_LITERAL_TYPE_STAR_GLOB) { |
| 79 | pattern = estack_ax(stack, top)->u.s.str; |
| 80 | pattern_len = get_str_or_seq_len(estack_ax(stack, top)); |
| 81 | candidate = estack_bx(stack, top)->u.s.str; |
| 82 | candidate_len = get_str_or_seq_len(estack_bx(stack, top)); |
| 83 | } else { |
| 84 | pattern = estack_bx(stack, top)->u.s.str; |
| 85 | pattern_len = get_str_or_seq_len(estack_bx(stack, top)); |
| 86 | candidate = estack_ax(stack, top)->u.s.str; |
| 87 | candidate_len = get_str_or_seq_len(estack_ax(stack, top)); |
| 88 | } |
| 89 | |
| 90 | /* Perform the match. Returns 0 when the result is true. */ |
| 91 | return !strutils_star_glob_match(pattern, pattern_len, candidate, |
| 92 | candidate_len); |
| 93 | } |
| 94 | |
| 95 | static |
| 96 | int stack_strcmp(struct estack *stack, int top, const char *cmp_type) |
| 97 | { |
| 98 | const char *p = estack_bx(stack, top)->u.s.str, *q = estack_ax(stack, top)->u.s.str; |
| 99 | int ret; |
| 100 | int diff; |
| 101 | |
| 102 | for (;;) { |
| 103 | int escaped_r0 = 0; |
| 104 | |
| 105 | if (unlikely(p - estack_bx(stack, top)->u.s.str >= estack_bx(stack, top)->u.s.seq_len || *p == '\0')) { |
| 106 | if (q - estack_ax(stack, top)->u.s.str >= estack_ax(stack, top)->u.s.seq_len || *q == '\0') { |
| 107 | return 0; |
| 108 | } else { |
| 109 | if (estack_ax(stack, top)->u.s.literal_type == |
| 110 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { |
| 111 | ret = parse_char(&q); |
| 112 | if (ret == -1) |
| 113 | return 0; |
| 114 | } |
| 115 | return -1; |
| 116 | } |
| 117 | } |
| 118 | if (unlikely(q - estack_ax(stack, top)->u.s.str >= estack_ax(stack, top)->u.s.seq_len || *q == '\0')) { |
| 119 | if (estack_bx(stack, top)->u.s.literal_type == |
| 120 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { |
| 121 | ret = parse_char(&p); |
| 122 | if (ret == -1) |
| 123 | return 0; |
| 124 | } |
| 125 | return 1; |
| 126 | } |
| 127 | if (estack_bx(stack, top)->u.s.literal_type == |
| 128 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { |
| 129 | ret = parse_char(&p); |
| 130 | if (ret == -1) { |
| 131 | return 0; |
| 132 | } else if (ret == -2) { |
| 133 | escaped_r0 = 1; |
| 134 | } |
| 135 | /* else compare both char */ |
| 136 | } |
| 137 | if (estack_ax(stack, top)->u.s.literal_type == |
| 138 | ESTACK_STRING_LITERAL_TYPE_PLAIN) { |
| 139 | ret = parse_char(&q); |
| 140 | if (ret == -1) { |
| 141 | return 0; |
| 142 | } else if (ret == -2) { |
| 143 | if (!escaped_r0) |
| 144 | return -1; |
| 145 | } else { |
| 146 | if (escaped_r0) |
| 147 | return 1; |
| 148 | } |
| 149 | } else { |
| 150 | if (escaped_r0) |
| 151 | return 1; |
| 152 | } |
| 153 | diff = *p - *q; |
| 154 | if (diff != 0) |
| 155 | break; |
| 156 | p++; |
| 157 | q++; |
| 158 | } |
| 159 | return diff; |
| 160 | } |
| 161 | |
| 162 | uint64_t lttng_filter_false(void *filter_data, |
| 163 | const char *filter_stack_data) |
| 164 | { |
| 165 | return 0; |
| 166 | } |
| 167 | |
| 168 | #ifdef INTERPRETER_USE_SWITCH |
| 169 | |
| 170 | /* |
| 171 | * Fallback for compilers that do not support taking address of labels. |
| 172 | */ |
| 173 | |
| 174 | #define START_OP \ |
| 175 | start_pc = &bytecode->data[0]; \ |
| 176 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; \ |
| 177 | pc = next_pc) { \ |
| 178 | dbg_printf("Executing op %s (%u)\n", \ |
| 179 | print_op((unsigned int) *(filter_opcode_t *) pc), \ |
| 180 | (unsigned int) *(filter_opcode_t *) pc); \ |
| 181 | switch (*(filter_opcode_t *) pc) { |
| 182 | |
| 183 | #define OP(name) jump_target_##name: __attribute__((unused)); \ |
| 184 | case name |
| 185 | |
| 186 | #define PO break |
| 187 | |
| 188 | #define END_OP } \ |
| 189 | } |
| 190 | |
| 191 | #define JUMP_TO(name) \ |
| 192 | goto jump_target_##name |
| 193 | |
| 194 | #else |
| 195 | |
| 196 | /* |
| 197 | * Dispatch-table based interpreter. |
| 198 | */ |
| 199 | |
| 200 | #define START_OP \ |
| 201 | start_pc = &bytecode->data[0]; \ |
| 202 | pc = next_pc = start_pc; \ |
| 203 | if (unlikely(pc - start_pc >= bytecode->len)) \ |
| 204 | goto end; \ |
| 205 | goto *dispatch[*(filter_opcode_t *) pc]; |
| 206 | |
| 207 | #define OP(name) \ |
| 208 | LABEL_##name |
| 209 | |
| 210 | #define PO \ |
| 211 | pc = next_pc; \ |
| 212 | goto *dispatch[*(filter_opcode_t *) pc]; |
| 213 | |
| 214 | #define END_OP |
| 215 | |
| 216 | #define JUMP_TO(name) \ |
| 217 | goto LABEL_##name |
| 218 | |
| 219 | #endif |
| 220 | |
| 221 | /* |
| 222 | * Return 0 (discard), or raise the 0x1 flag (log event). |
| 223 | * Currently, other flags are kept for future extensions and have no |
| 224 | * effect. |
| 225 | */ |
| 226 | uint64_t lttng_filter_interpret_bytecode(void *filter_data, |
| 227 | const char *filter_stack_data) |
| 228 | { |
| 229 | struct bytecode_runtime *bytecode = filter_data; |
| 230 | struct lttng_session *session = bytecode->p.session; |
| 231 | void *pc, *next_pc, *start_pc; |
| 232 | int ret = -EINVAL; |
| 233 | uint64_t retval = 0; |
| 234 | struct estack _stack; |
| 235 | struct estack *stack = &_stack; |
| 236 | register int64_t ax = 0, bx = 0; |
| 237 | register enum entry_type ax_t = REG_UNKNOWN, bx_t = REG_UNKNOWN; |
| 238 | register int top = FILTER_STACK_EMPTY; |
| 239 | #ifndef INTERPRETER_USE_SWITCH |
| 240 | static void *dispatch[NR_FILTER_OPS] = { |
| 241 | [ FILTER_OP_UNKNOWN ] = &&LABEL_FILTER_OP_UNKNOWN, |
| 242 | |
| 243 | [ FILTER_OP_RETURN ] = &&LABEL_FILTER_OP_RETURN, |
| 244 | |
| 245 | /* binary */ |
| 246 | [ FILTER_OP_MUL ] = &&LABEL_FILTER_OP_MUL, |
| 247 | [ FILTER_OP_DIV ] = &&LABEL_FILTER_OP_DIV, |
| 248 | [ FILTER_OP_MOD ] = &&LABEL_FILTER_OP_MOD, |
| 249 | [ FILTER_OP_PLUS ] = &&LABEL_FILTER_OP_PLUS, |
| 250 | [ FILTER_OP_MINUS ] = &&LABEL_FILTER_OP_MINUS, |
| 251 | [ FILTER_OP_RSHIFT ] = &&LABEL_FILTER_OP_RSHIFT, |
| 252 | [ FILTER_OP_LSHIFT ] = &&LABEL_FILTER_OP_LSHIFT, |
| 253 | [ FILTER_OP_BIN_AND ] = &&LABEL_FILTER_OP_BIN_AND, |
| 254 | [ FILTER_OP_BIN_OR ] = &&LABEL_FILTER_OP_BIN_OR, |
| 255 | [ FILTER_OP_BIN_XOR ] = &&LABEL_FILTER_OP_BIN_XOR, |
| 256 | |
| 257 | /* binary comparators */ |
| 258 | [ FILTER_OP_EQ ] = &&LABEL_FILTER_OP_EQ, |
| 259 | [ FILTER_OP_NE ] = &&LABEL_FILTER_OP_NE, |
| 260 | [ FILTER_OP_GT ] = &&LABEL_FILTER_OP_GT, |
| 261 | [ FILTER_OP_LT ] = &&LABEL_FILTER_OP_LT, |
| 262 | [ FILTER_OP_GE ] = &&LABEL_FILTER_OP_GE, |
| 263 | [ FILTER_OP_LE ] = &&LABEL_FILTER_OP_LE, |
| 264 | |
| 265 | /* string binary comparator */ |
| 266 | [ FILTER_OP_EQ_STRING ] = &&LABEL_FILTER_OP_EQ_STRING, |
| 267 | [ FILTER_OP_NE_STRING ] = &&LABEL_FILTER_OP_NE_STRING, |
| 268 | [ FILTER_OP_GT_STRING ] = &&LABEL_FILTER_OP_GT_STRING, |
| 269 | [ FILTER_OP_LT_STRING ] = &&LABEL_FILTER_OP_LT_STRING, |
| 270 | [ FILTER_OP_GE_STRING ] = &&LABEL_FILTER_OP_GE_STRING, |
| 271 | [ FILTER_OP_LE_STRING ] = &&LABEL_FILTER_OP_LE_STRING, |
| 272 | |
| 273 | /* globbing pattern binary comparator */ |
| 274 | [ FILTER_OP_EQ_STAR_GLOB_STRING ] = &&LABEL_FILTER_OP_EQ_STAR_GLOB_STRING, |
| 275 | [ FILTER_OP_NE_STAR_GLOB_STRING ] = &&LABEL_FILTER_OP_NE_STAR_GLOB_STRING, |
| 276 | |
| 277 | /* s64 binary comparator */ |
| 278 | [ FILTER_OP_EQ_S64 ] = &&LABEL_FILTER_OP_EQ_S64, |
| 279 | [ FILTER_OP_NE_S64 ] = &&LABEL_FILTER_OP_NE_S64, |
| 280 | [ FILTER_OP_GT_S64 ] = &&LABEL_FILTER_OP_GT_S64, |
| 281 | [ FILTER_OP_LT_S64 ] = &&LABEL_FILTER_OP_LT_S64, |
| 282 | [ FILTER_OP_GE_S64 ] = &&LABEL_FILTER_OP_GE_S64, |
| 283 | [ FILTER_OP_LE_S64 ] = &&LABEL_FILTER_OP_LE_S64, |
| 284 | |
| 285 | /* double binary comparator */ |
| 286 | [ FILTER_OP_EQ_DOUBLE ] = &&LABEL_FILTER_OP_EQ_DOUBLE, |
| 287 | [ FILTER_OP_NE_DOUBLE ] = &&LABEL_FILTER_OP_NE_DOUBLE, |
| 288 | [ FILTER_OP_GT_DOUBLE ] = &&LABEL_FILTER_OP_GT_DOUBLE, |
| 289 | [ FILTER_OP_LT_DOUBLE ] = &&LABEL_FILTER_OP_LT_DOUBLE, |
| 290 | [ FILTER_OP_GE_DOUBLE ] = &&LABEL_FILTER_OP_GE_DOUBLE, |
| 291 | [ FILTER_OP_LE_DOUBLE ] = &&LABEL_FILTER_OP_LE_DOUBLE, |
| 292 | |
| 293 | /* Mixed S64-double binary comparators */ |
| 294 | [ FILTER_OP_EQ_DOUBLE_S64 ] = &&LABEL_FILTER_OP_EQ_DOUBLE_S64, |
| 295 | [ FILTER_OP_NE_DOUBLE_S64 ] = &&LABEL_FILTER_OP_NE_DOUBLE_S64, |
| 296 | [ FILTER_OP_GT_DOUBLE_S64 ] = &&LABEL_FILTER_OP_GT_DOUBLE_S64, |
| 297 | [ FILTER_OP_LT_DOUBLE_S64 ] = &&LABEL_FILTER_OP_LT_DOUBLE_S64, |
| 298 | [ FILTER_OP_GE_DOUBLE_S64 ] = &&LABEL_FILTER_OP_GE_DOUBLE_S64, |
| 299 | [ FILTER_OP_LE_DOUBLE_S64 ] = &&LABEL_FILTER_OP_LE_DOUBLE_S64, |
| 300 | |
| 301 | [ FILTER_OP_EQ_S64_DOUBLE ] = &&LABEL_FILTER_OP_EQ_S64_DOUBLE, |
| 302 | [ FILTER_OP_NE_S64_DOUBLE ] = &&LABEL_FILTER_OP_NE_S64_DOUBLE, |
| 303 | [ FILTER_OP_GT_S64_DOUBLE ] = &&LABEL_FILTER_OP_GT_S64_DOUBLE, |
| 304 | [ FILTER_OP_LT_S64_DOUBLE ] = &&LABEL_FILTER_OP_LT_S64_DOUBLE, |
| 305 | [ FILTER_OP_GE_S64_DOUBLE ] = &&LABEL_FILTER_OP_GE_S64_DOUBLE, |
| 306 | [ FILTER_OP_LE_S64_DOUBLE ] = &&LABEL_FILTER_OP_LE_S64_DOUBLE, |
| 307 | |
| 308 | /* unary */ |
| 309 | [ FILTER_OP_UNARY_PLUS ] = &&LABEL_FILTER_OP_UNARY_PLUS, |
| 310 | [ FILTER_OP_UNARY_MINUS ] = &&LABEL_FILTER_OP_UNARY_MINUS, |
| 311 | [ FILTER_OP_UNARY_NOT ] = &&LABEL_FILTER_OP_UNARY_NOT, |
| 312 | [ FILTER_OP_UNARY_PLUS_S64 ] = &&LABEL_FILTER_OP_UNARY_PLUS_S64, |
| 313 | [ FILTER_OP_UNARY_MINUS_S64 ] = &&LABEL_FILTER_OP_UNARY_MINUS_S64, |
| 314 | [ FILTER_OP_UNARY_NOT_S64 ] = &&LABEL_FILTER_OP_UNARY_NOT_S64, |
| 315 | [ FILTER_OP_UNARY_PLUS_DOUBLE ] = &&LABEL_FILTER_OP_UNARY_PLUS_DOUBLE, |
| 316 | [ FILTER_OP_UNARY_MINUS_DOUBLE ] = &&LABEL_FILTER_OP_UNARY_MINUS_DOUBLE, |
| 317 | [ FILTER_OP_UNARY_NOT_DOUBLE ] = &&LABEL_FILTER_OP_UNARY_NOT_DOUBLE, |
| 318 | |
| 319 | /* logical */ |
| 320 | [ FILTER_OP_AND ] = &&LABEL_FILTER_OP_AND, |
| 321 | [ FILTER_OP_OR ] = &&LABEL_FILTER_OP_OR, |
| 322 | |
| 323 | /* load field ref */ |
| 324 | [ FILTER_OP_LOAD_FIELD_REF ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF, |
| 325 | [ FILTER_OP_LOAD_FIELD_REF_STRING ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_STRING, |
| 326 | [ FILTER_OP_LOAD_FIELD_REF_SEQUENCE ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_SEQUENCE, |
| 327 | [ FILTER_OP_LOAD_FIELD_REF_S64 ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_S64, |
| 328 | [ FILTER_OP_LOAD_FIELD_REF_DOUBLE ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_DOUBLE, |
| 329 | |
| 330 | /* load from immediate operand */ |
| 331 | [ FILTER_OP_LOAD_STRING ] = &&LABEL_FILTER_OP_LOAD_STRING, |
| 332 | [ FILTER_OP_LOAD_STAR_GLOB_STRING ] = &&LABEL_FILTER_OP_LOAD_STAR_GLOB_STRING, |
| 333 | [ FILTER_OP_LOAD_S64 ] = &&LABEL_FILTER_OP_LOAD_S64, |
| 334 | [ FILTER_OP_LOAD_DOUBLE ] = &&LABEL_FILTER_OP_LOAD_DOUBLE, |
| 335 | |
| 336 | /* cast */ |
| 337 | [ FILTER_OP_CAST_TO_S64 ] = &&LABEL_FILTER_OP_CAST_TO_S64, |
| 338 | [ FILTER_OP_CAST_DOUBLE_TO_S64 ] = &&LABEL_FILTER_OP_CAST_DOUBLE_TO_S64, |
| 339 | [ FILTER_OP_CAST_NOP ] = &&LABEL_FILTER_OP_CAST_NOP, |
| 340 | |
| 341 | /* get context ref */ |
| 342 | [ FILTER_OP_GET_CONTEXT_REF ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF, |
| 343 | [ FILTER_OP_GET_CONTEXT_REF_STRING ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_STRING, |
| 344 | [ FILTER_OP_GET_CONTEXT_REF_S64 ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_S64, |
| 345 | [ FILTER_OP_GET_CONTEXT_REF_DOUBLE ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_DOUBLE, |
| 346 | }; |
| 347 | #endif /* #ifndef INTERPRETER_USE_SWITCH */ |
| 348 | |
| 349 | START_OP |
| 350 | |
| 351 | OP(FILTER_OP_UNKNOWN): |
| 352 | OP(FILTER_OP_LOAD_FIELD_REF): |
| 353 | #ifdef INTERPRETER_USE_SWITCH |
| 354 | default: |
| 355 | #endif /* INTERPRETER_USE_SWITCH */ |
| 356 | ERR("unknown bytecode op %u\n", |
| 357 | (unsigned int) *(filter_opcode_t *) pc); |
| 358 | ret = -EINVAL; |
| 359 | goto end; |
| 360 | |
| 361 | OP(FILTER_OP_RETURN): |
| 362 | /* LTTNG_FILTER_DISCARD or LTTNG_FILTER_RECORD_FLAG */ |
| 363 | retval = !!estack_ax_v; |
| 364 | ret = 0; |
| 365 | goto end; |
| 366 | |
| 367 | /* binary */ |
| 368 | OP(FILTER_OP_MUL): |
| 369 | OP(FILTER_OP_DIV): |
| 370 | OP(FILTER_OP_MOD): |
| 371 | OP(FILTER_OP_PLUS): |
| 372 | OP(FILTER_OP_MINUS): |
| 373 | OP(FILTER_OP_RSHIFT): |
| 374 | OP(FILTER_OP_LSHIFT): |
| 375 | OP(FILTER_OP_BIN_AND): |
| 376 | OP(FILTER_OP_BIN_OR): |
| 377 | OP(FILTER_OP_BIN_XOR): |
| 378 | ERR("unsupported bytecode op %u\n", |
| 379 | (unsigned int) *(filter_opcode_t *) pc); |
| 380 | ret = -EINVAL; |
| 381 | goto end; |
| 382 | |
| 383 | OP(FILTER_OP_EQ): |
| 384 | { |
| 385 | /* Dynamic typing. */ |
| 386 | switch (estack_ax_t) { |
| 387 | case REG_S64: |
| 388 | switch (estack_bx_t) { |
| 389 | case REG_S64: |
| 390 | JUMP_TO(FILTER_OP_EQ_S64); |
| 391 | case REG_DOUBLE: |
| 392 | JUMP_TO(FILTER_OP_EQ_DOUBLE_S64); |
| 393 | case REG_STRING: /* Fall-through */ |
| 394 | case REG_STAR_GLOB_STRING: |
| 395 | ret = -EINVAL; |
| 396 | goto end; |
| 397 | default: |
| 398 | ERR("Unknown filter register type (%d)", |
| 399 | (int) estack_bx_t); |
| 400 | ret = -EINVAL; |
| 401 | goto end; |
| 402 | } |
| 403 | break; |
| 404 | case REG_DOUBLE: |
| 405 | switch (estack_bx_t) { |
| 406 | case REG_S64: |
| 407 | JUMP_TO(FILTER_OP_EQ_S64_DOUBLE); |
| 408 | case REG_DOUBLE: |
| 409 | JUMP_TO(FILTER_OP_EQ_DOUBLE); |
| 410 | case REG_STRING: /* Fall-through */ |
| 411 | case REG_STAR_GLOB_STRING: |
| 412 | ret = -EINVAL; |
| 413 | goto end; |
| 414 | default: |
| 415 | ERR("Unknown filter register type (%d)", |
| 416 | (int) estack_bx_t); |
| 417 | ret = -EINVAL; |
| 418 | goto end; |
| 419 | } |
| 420 | break; |
| 421 | case REG_STRING: |
| 422 | switch (estack_bx_t) { |
| 423 | case REG_S64: /* Fall-through */ |
| 424 | case REG_DOUBLE: |
| 425 | ret = -EINVAL; |
| 426 | goto end; |
| 427 | case REG_STRING: |
| 428 | JUMP_TO(FILTER_OP_EQ_STRING); |
| 429 | case REG_STAR_GLOB_STRING: |
| 430 | JUMP_TO(FILTER_OP_EQ_STAR_GLOB_STRING); |
| 431 | default: |
| 432 | ERR("Unknown filter register type (%d)", |
| 433 | (int) estack_bx_t); |
| 434 | ret = -EINVAL; |
| 435 | goto end; |
| 436 | } |
| 437 | break; |
| 438 | case REG_STAR_GLOB_STRING: |
| 439 | switch (estack_bx_t) { |
| 440 | case REG_S64: /* Fall-through */ |
| 441 | case REG_DOUBLE: |
| 442 | ret = -EINVAL; |
| 443 | goto end; |
| 444 | case REG_STRING: |
| 445 | JUMP_TO(FILTER_OP_EQ_STAR_GLOB_STRING); |
| 446 | case REG_STAR_GLOB_STRING: |
| 447 | ret = -EINVAL; |
| 448 | goto end; |
| 449 | default: |
| 450 | ERR("Unknown filter register type (%d)", |
| 451 | (int) estack_bx_t); |
| 452 | ret = -EINVAL; |
| 453 | goto end; |
| 454 | } |
| 455 | break; |
| 456 | default: |
| 457 | ERR("Unknown filter register type (%d)", |
| 458 | (int) estack_ax_t); |
| 459 | ret = -EINVAL; |
| 460 | goto end; |
| 461 | } |
| 462 | } |
| 463 | OP(FILTER_OP_NE): |
| 464 | { |
| 465 | /* Dynamic typing. */ |
| 466 | switch (estack_ax_t) { |
| 467 | case REG_S64: |
| 468 | switch (estack_bx_t) { |
| 469 | case REG_S64: |
| 470 | JUMP_TO(FILTER_OP_NE_S64); |
| 471 | case REG_DOUBLE: |
| 472 | JUMP_TO(FILTER_OP_NE_DOUBLE_S64); |
| 473 | case REG_STRING: /* Fall-through */ |
| 474 | case REG_STAR_GLOB_STRING: |
| 475 | ret = -EINVAL; |
| 476 | goto end; |
| 477 | default: |
| 478 | ERR("Unknown filter register type (%d)", |
| 479 | (int) estack_bx_t); |
| 480 | ret = -EINVAL; |
| 481 | goto end; |
| 482 | } |
| 483 | break; |
| 484 | case REG_DOUBLE: |
| 485 | switch (estack_bx_t) { |
| 486 | case REG_S64: |
| 487 | JUMP_TO(FILTER_OP_NE_S64_DOUBLE); |
| 488 | case REG_DOUBLE: |
| 489 | JUMP_TO(FILTER_OP_NE_DOUBLE); |
| 490 | case REG_STRING: /* Fall-through */ |
| 491 | case REG_STAR_GLOB_STRING: |
| 492 | ret = -EINVAL; |
| 493 | goto end; |
| 494 | default: |
| 495 | ERR("Unknown filter register type (%d)", |
| 496 | (int) estack_bx_t); |
| 497 | ret = -EINVAL; |
| 498 | goto end; |
| 499 | } |
| 500 | break; |
| 501 | case REG_STRING: |
| 502 | switch (estack_bx_t) { |
| 503 | case REG_S64: /* Fall-through */ |
| 504 | case REG_DOUBLE: |
| 505 | ret = -EINVAL; |
| 506 | goto end; |
| 507 | case REG_STRING: |
| 508 | JUMP_TO(FILTER_OP_NE_STRING); |
| 509 | case REG_STAR_GLOB_STRING: |
| 510 | JUMP_TO(FILTER_OP_NE_STAR_GLOB_STRING); |
| 511 | default: |
| 512 | ERR("Unknown filter register type (%d)", |
| 513 | (int) estack_bx_t); |
| 514 | ret = -EINVAL; |
| 515 | goto end; |
| 516 | } |
| 517 | break; |
| 518 | case REG_STAR_GLOB_STRING: |
| 519 | switch (estack_bx_t) { |
| 520 | case REG_S64: /* Fall-through */ |
| 521 | case REG_DOUBLE: |
| 522 | ret = -EINVAL; |
| 523 | goto end; |
| 524 | case REG_STRING: |
| 525 | JUMP_TO(FILTER_OP_NE_STAR_GLOB_STRING); |
| 526 | case REG_STAR_GLOB_STRING: |
| 527 | ret = -EINVAL; |
| 528 | goto end; |
| 529 | default: |
| 530 | ERR("Unknown filter register type (%d)", |
| 531 | (int) estack_bx_t); |
| 532 | ret = -EINVAL; |
| 533 | goto end; |
| 534 | } |
| 535 | break; |
| 536 | default: |
| 537 | ERR("Unknown filter register type (%d)", |
| 538 | (int) estack_ax_t); |
| 539 | ret = -EINVAL; |
| 540 | goto end; |
| 541 | } |
| 542 | } |
| 543 | OP(FILTER_OP_GT): |
| 544 | { |
| 545 | /* Dynamic typing. */ |
| 546 | switch (estack_ax_t) { |
| 547 | case REG_S64: |
| 548 | switch (estack_bx_t) { |
| 549 | case REG_S64: |
| 550 | JUMP_TO(FILTER_OP_GT_S64); |
| 551 | case REG_DOUBLE: |
| 552 | JUMP_TO(FILTER_OP_GT_DOUBLE_S64); |
| 553 | case REG_STRING: /* Fall-through */ |
| 554 | case REG_STAR_GLOB_STRING: |
| 555 | ret = -EINVAL; |
| 556 | goto end; |
| 557 | default: |
| 558 | ERR("Unknown filter register type (%d)", |
| 559 | (int) estack_bx_t); |
| 560 | ret = -EINVAL; |
| 561 | goto end; |
| 562 | } |
| 563 | break; |
| 564 | case REG_DOUBLE: |
| 565 | switch (estack_bx_t) { |
| 566 | case REG_S64: |
| 567 | JUMP_TO(FILTER_OP_GT_S64_DOUBLE); |
| 568 | case REG_DOUBLE: |
| 569 | JUMP_TO(FILTER_OP_GT_DOUBLE); |
| 570 | case REG_STRING: /* Fall-through */ |
| 571 | case REG_STAR_GLOB_STRING: |
| 572 | ret = -EINVAL; |
| 573 | goto end; |
| 574 | default: |
| 575 | ERR("Unknown filter register type (%d)", |
| 576 | (int) estack_bx_t); |
| 577 | ret = -EINVAL; |
| 578 | goto end; |
| 579 | } |
| 580 | break; |
| 581 | case REG_STRING: |
| 582 | switch (estack_bx_t) { |
| 583 | case REG_S64: /* Fall-through */ |
| 584 | case REG_DOUBLE: /* Fall-through */ |
| 585 | case REG_STAR_GLOB_STRING: |
| 586 | ret = -EINVAL; |
| 587 | goto end; |
| 588 | case REG_STRING: |
| 589 | JUMP_TO(FILTER_OP_GT_STRING); |
| 590 | default: |
| 591 | ERR("Unknown filter register type (%d)", |
| 592 | (int) estack_bx_t); |
| 593 | ret = -EINVAL; |
| 594 | goto end; |
| 595 | } |
| 596 | break; |
| 597 | default: |
| 598 | ERR("Unknown filter register type (%d)", |
| 599 | (int) estack_ax_t); |
| 600 | ret = -EINVAL; |
| 601 | goto end; |
| 602 | } |
| 603 | } |
| 604 | OP(FILTER_OP_LT): |
| 605 | { |
| 606 | /* Dynamic typing. */ |
| 607 | switch (estack_ax_t) { |
| 608 | case REG_S64: |
| 609 | switch (estack_bx_t) { |
| 610 | case REG_S64: |
| 611 | JUMP_TO(FILTER_OP_LT_S64); |
| 612 | case REG_DOUBLE: |
| 613 | JUMP_TO(FILTER_OP_LT_DOUBLE_S64); |
| 614 | case REG_STRING: /* Fall-through */ |
| 615 | case REG_STAR_GLOB_STRING: |
| 616 | ret = -EINVAL; |
| 617 | goto end; |
| 618 | default: |
| 619 | ERR("Unknown filter register type (%d)", |
| 620 | (int) estack_bx_t); |
| 621 | ret = -EINVAL; |
| 622 | goto end; |
| 623 | } |
| 624 | break; |
| 625 | case REG_DOUBLE: |
| 626 | switch (estack_bx_t) { |
| 627 | case REG_S64: |
| 628 | JUMP_TO(FILTER_OP_LT_S64_DOUBLE); |
| 629 | case REG_DOUBLE: |
| 630 | JUMP_TO(FILTER_OP_LT_DOUBLE); |
| 631 | case REG_STRING: /* Fall-through */ |
| 632 | case REG_STAR_GLOB_STRING: |
| 633 | ret = -EINVAL; |
| 634 | goto end; |
| 635 | default: |
| 636 | ERR("Unknown filter register type (%d)", |
| 637 | (int) estack_bx_t); |
| 638 | ret = -EINVAL; |
| 639 | goto end; |
| 640 | } |
| 641 | break; |
| 642 | case REG_STRING: |
| 643 | switch (estack_bx_t) { |
| 644 | case REG_S64: /* Fall-through */ |
| 645 | case REG_DOUBLE: /* Fall-through */ |
| 646 | case REG_STAR_GLOB_STRING: |
| 647 | ret = -EINVAL; |
| 648 | goto end; |
| 649 | case REG_STRING: |
| 650 | JUMP_TO(FILTER_OP_LT_STRING); |
| 651 | default: |
| 652 | ERR("Unknown filter register type (%d)", |
| 653 | (int) estack_bx_t); |
| 654 | ret = -EINVAL; |
| 655 | goto end; |
| 656 | } |
| 657 | break; |
| 658 | default: |
| 659 | ERR("Unknown filter register type (%d)", |
| 660 | (int) estack_ax_t); |
| 661 | ret = -EINVAL; |
| 662 | goto end; |
| 663 | } |
| 664 | } |
| 665 | OP(FILTER_OP_GE): |
| 666 | { |
| 667 | /* Dynamic typing. */ |
| 668 | switch (estack_ax_t) { |
| 669 | case REG_S64: |
| 670 | switch (estack_bx_t) { |
| 671 | case REG_S64: |
| 672 | JUMP_TO(FILTER_OP_GE_S64); |
| 673 | case REG_DOUBLE: |
| 674 | JUMP_TO(FILTER_OP_GE_DOUBLE_S64); |
| 675 | case REG_STRING: /* Fall-through */ |
| 676 | case REG_STAR_GLOB_STRING: |
| 677 | ret = -EINVAL; |
| 678 | goto end; |
| 679 | default: |
| 680 | ERR("Unknown filter register type (%d)", |
| 681 | (int) estack_bx_t); |
| 682 | ret = -EINVAL; |
| 683 | goto end; |
| 684 | } |
| 685 | break; |
| 686 | case REG_DOUBLE: |
| 687 | switch (estack_bx_t) { |
| 688 | case REG_S64: |
| 689 | JUMP_TO(FILTER_OP_GE_S64_DOUBLE); |
| 690 | case REG_DOUBLE: |
| 691 | JUMP_TO(FILTER_OP_GE_DOUBLE); |
| 692 | case REG_STRING: /* Fall-through */ |
| 693 | case REG_STAR_GLOB_STRING: |
| 694 | ret = -EINVAL; |
| 695 | goto end; |
| 696 | default: |
| 697 | ERR("Unknown filter register type (%d)", |
| 698 | (int) estack_bx_t); |
| 699 | ret = -EINVAL; |
| 700 | goto end; |
| 701 | } |
| 702 | break; |
| 703 | case REG_STRING: |
| 704 | switch (estack_bx_t) { |
| 705 | case REG_S64: /* Fall-through */ |
| 706 | case REG_DOUBLE: /* Fall-through */ |
| 707 | case REG_STAR_GLOB_STRING: |
| 708 | ret = -EINVAL; |
| 709 | goto end; |
| 710 | case REG_STRING: |
| 711 | JUMP_TO(FILTER_OP_GE_STRING); |
| 712 | default: |
| 713 | ERR("Unknown filter register type (%d)", |
| 714 | (int) estack_bx_t); |
| 715 | ret = -EINVAL; |
| 716 | goto end; |
| 717 | } |
| 718 | break; |
| 719 | default: |
| 720 | ERR("Unknown filter register type (%d)", |
| 721 | (int) estack_ax_t); |
| 722 | ret = -EINVAL; |
| 723 | goto end; |
| 724 | } |
| 725 | } |
| 726 | OP(FILTER_OP_LE): |
| 727 | { |
| 728 | /* Dynamic typing. */ |
| 729 | switch (estack_ax_t) { |
| 730 | case REG_S64: |
| 731 | switch (estack_bx_t) { |
| 732 | case REG_S64: |
| 733 | JUMP_TO(FILTER_OP_LE_S64); |
| 734 | case REG_DOUBLE: |
| 735 | JUMP_TO(FILTER_OP_LE_DOUBLE_S64); |
| 736 | case REG_STRING: /* Fall-through */ |
| 737 | case REG_STAR_GLOB_STRING: |
| 738 | ret = -EINVAL; |
| 739 | goto end; |
| 740 | default: |
| 741 | ERR("Unknown filter register type (%d)", |
| 742 | (int) estack_bx_t); |
| 743 | ret = -EINVAL; |
| 744 | goto end; |
| 745 | } |
| 746 | break; |
| 747 | case REG_DOUBLE: |
| 748 | switch (estack_bx_t) { |
| 749 | case REG_S64: |
| 750 | JUMP_TO(FILTER_OP_LE_S64_DOUBLE); |
| 751 | case REG_DOUBLE: |
| 752 | JUMP_TO(FILTER_OP_LE_DOUBLE); |
| 753 | case REG_STRING: /* Fall-through */ |
| 754 | case REG_STAR_GLOB_STRING: |
| 755 | ret = -EINVAL; |
| 756 | goto end; |
| 757 | default: |
| 758 | ERR("Unknown filter register type (%d)", |
| 759 | (int) estack_bx_t); |
| 760 | ret = -EINVAL; |
| 761 | goto end; |
| 762 | } |
| 763 | break; |
| 764 | case REG_STRING: |
| 765 | switch (estack_bx_t) { |
| 766 | case REG_S64: /* Fall-through */ |
| 767 | case REG_DOUBLE: /* Fall-through */ |
| 768 | case REG_STAR_GLOB_STRING: |
| 769 | ret = -EINVAL; |
| 770 | goto end; |
| 771 | case REG_STRING: |
| 772 | JUMP_TO(FILTER_OP_LE_STRING); |
| 773 | default: |
| 774 | ERR("Unknown filter register type (%d)", |
| 775 | (int) estack_bx_t); |
| 776 | ret = -EINVAL; |
| 777 | goto end; |
| 778 | } |
| 779 | break; |
| 780 | default: |
| 781 | ERR("Unknown filter register type (%d)", |
| 782 | (int) estack_ax_t); |
| 783 | ret = -EINVAL; |
| 784 | goto end; |
| 785 | } |
| 786 | } |
| 787 | |
| 788 | OP(FILTER_OP_EQ_STRING): |
| 789 | { |
| 790 | int res; |
| 791 | |
| 792 | res = (stack_strcmp(stack, top, "==") == 0); |
| 793 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 794 | estack_ax_v = res; |
| 795 | estack_ax_t = REG_S64; |
| 796 | next_pc += sizeof(struct binary_op); |
| 797 | PO; |
| 798 | } |
| 799 | OP(FILTER_OP_NE_STRING): |
| 800 | { |
| 801 | int res; |
| 802 | |
| 803 | res = (stack_strcmp(stack, top, "!=") != 0); |
| 804 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 805 | estack_ax_v = res; |
| 806 | estack_ax_t = REG_S64; |
| 807 | next_pc += sizeof(struct binary_op); |
| 808 | PO; |
| 809 | } |
| 810 | OP(FILTER_OP_GT_STRING): |
| 811 | { |
| 812 | int res; |
| 813 | |
| 814 | res = (stack_strcmp(stack, top, ">") > 0); |
| 815 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 816 | estack_ax_v = res; |
| 817 | estack_ax_t = REG_S64; |
| 818 | next_pc += sizeof(struct binary_op); |
| 819 | PO; |
| 820 | } |
| 821 | OP(FILTER_OP_LT_STRING): |
| 822 | { |
| 823 | int res; |
| 824 | |
| 825 | res = (stack_strcmp(stack, top, "<") < 0); |
| 826 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 827 | estack_ax_v = res; |
| 828 | estack_ax_t = REG_S64; |
| 829 | next_pc += sizeof(struct binary_op); |
| 830 | PO; |
| 831 | } |
| 832 | OP(FILTER_OP_GE_STRING): |
| 833 | { |
| 834 | int res; |
| 835 | |
| 836 | res = (stack_strcmp(stack, top, ">=") >= 0); |
| 837 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 838 | estack_ax_v = res; |
| 839 | estack_ax_t = REG_S64; |
| 840 | next_pc += sizeof(struct binary_op); |
| 841 | PO; |
| 842 | } |
| 843 | OP(FILTER_OP_LE_STRING): |
| 844 | { |
| 845 | int res; |
| 846 | |
| 847 | res = (stack_strcmp(stack, top, "<=") <= 0); |
| 848 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 849 | estack_ax_v = res; |
| 850 | estack_ax_t = REG_S64; |
| 851 | next_pc += sizeof(struct binary_op); |
| 852 | PO; |
| 853 | } |
| 854 | |
| 855 | OP(FILTER_OP_EQ_STAR_GLOB_STRING): |
| 856 | { |
| 857 | int res; |
| 858 | |
| 859 | res = (stack_star_glob_match(stack, top, "==") == 0); |
| 860 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 861 | estack_ax_v = res; |
| 862 | estack_ax_t = REG_S64; |
| 863 | next_pc += sizeof(struct binary_op); |
| 864 | PO; |
| 865 | } |
| 866 | OP(FILTER_OP_NE_STAR_GLOB_STRING): |
| 867 | { |
| 868 | int res; |
| 869 | |
| 870 | res = (stack_star_glob_match(stack, top, "!=") != 0); |
| 871 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 872 | estack_ax_v = res; |
| 873 | estack_ax_t = REG_S64; |
| 874 | next_pc += sizeof(struct binary_op); |
| 875 | PO; |
| 876 | } |
| 877 | |
| 878 | OP(FILTER_OP_EQ_S64): |
| 879 | { |
| 880 | int res; |
| 881 | |
| 882 | res = (estack_bx_v == estack_ax_v); |
| 883 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 884 | estack_ax_v = res; |
| 885 | estack_ax_t = REG_S64; |
| 886 | next_pc += sizeof(struct binary_op); |
| 887 | PO; |
| 888 | } |
| 889 | OP(FILTER_OP_NE_S64): |
| 890 | { |
| 891 | int res; |
| 892 | |
| 893 | res = (estack_bx_v != estack_ax_v); |
| 894 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 895 | estack_ax_v = res; |
| 896 | estack_ax_t = REG_S64; |
| 897 | next_pc += sizeof(struct binary_op); |
| 898 | PO; |
| 899 | } |
| 900 | OP(FILTER_OP_GT_S64): |
| 901 | { |
| 902 | int res; |
| 903 | |
| 904 | res = (estack_bx_v > estack_ax_v); |
| 905 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 906 | estack_ax_v = res; |
| 907 | estack_ax_t = REG_S64; |
| 908 | next_pc += sizeof(struct binary_op); |
| 909 | PO; |
| 910 | } |
| 911 | OP(FILTER_OP_LT_S64): |
| 912 | { |
| 913 | int res; |
| 914 | |
| 915 | res = (estack_bx_v < estack_ax_v); |
| 916 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 917 | estack_ax_v = res; |
| 918 | estack_ax_t = REG_S64; |
| 919 | next_pc += sizeof(struct binary_op); |
| 920 | PO; |
| 921 | } |
| 922 | OP(FILTER_OP_GE_S64): |
| 923 | { |
| 924 | int res; |
| 925 | |
| 926 | res = (estack_bx_v >= estack_ax_v); |
| 927 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 928 | estack_ax_v = res; |
| 929 | estack_ax_t = REG_S64; |
| 930 | next_pc += sizeof(struct binary_op); |
| 931 | PO; |
| 932 | } |
| 933 | OP(FILTER_OP_LE_S64): |
| 934 | { |
| 935 | int res; |
| 936 | |
| 937 | res = (estack_bx_v <= estack_ax_v); |
| 938 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 939 | estack_ax_v = res; |
| 940 | estack_ax_t = REG_S64; |
| 941 | next_pc += sizeof(struct binary_op); |
| 942 | PO; |
| 943 | } |
| 944 | |
| 945 | OP(FILTER_OP_EQ_DOUBLE): |
| 946 | { |
| 947 | int res; |
| 948 | |
| 949 | res = (estack_bx(stack, top)->u.d == estack_ax(stack, top)->u.d); |
| 950 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 951 | estack_ax_v = res; |
| 952 | estack_ax_t = REG_S64; |
| 953 | next_pc += sizeof(struct binary_op); |
| 954 | PO; |
| 955 | } |
| 956 | OP(FILTER_OP_NE_DOUBLE): |
| 957 | { |
| 958 | int res; |
| 959 | |
| 960 | res = (estack_bx(stack, top)->u.d != estack_ax(stack, top)->u.d); |
| 961 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 962 | estack_ax_v = res; |
| 963 | estack_ax_t = REG_S64; |
| 964 | next_pc += sizeof(struct binary_op); |
| 965 | PO; |
| 966 | } |
| 967 | OP(FILTER_OP_GT_DOUBLE): |
| 968 | { |
| 969 | int res; |
| 970 | |
| 971 | res = (estack_bx(stack, top)->u.d > estack_ax(stack, top)->u.d); |
| 972 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 973 | estack_ax_v = res; |
| 974 | estack_ax_t = REG_S64; |
| 975 | next_pc += sizeof(struct binary_op); |
| 976 | PO; |
| 977 | } |
| 978 | OP(FILTER_OP_LT_DOUBLE): |
| 979 | { |
| 980 | int res; |
| 981 | |
| 982 | res = (estack_bx(stack, top)->u.d < estack_ax(stack, top)->u.d); |
| 983 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 984 | estack_ax_v = res; |
| 985 | estack_ax_t = REG_S64; |
| 986 | next_pc += sizeof(struct binary_op); |
| 987 | PO; |
| 988 | } |
| 989 | OP(FILTER_OP_GE_DOUBLE): |
| 990 | { |
| 991 | int res; |
| 992 | |
| 993 | res = (estack_bx(stack, top)->u.d >= estack_ax(stack, top)->u.d); |
| 994 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 995 | estack_ax_v = res; |
| 996 | estack_ax_t = REG_S64; |
| 997 | next_pc += sizeof(struct binary_op); |
| 998 | PO; |
| 999 | } |
| 1000 | OP(FILTER_OP_LE_DOUBLE): |
| 1001 | { |
| 1002 | int res; |
| 1003 | |
| 1004 | res = (estack_bx(stack, top)->u.d <= estack_ax(stack, top)->u.d); |
| 1005 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1006 | estack_ax_v = res; |
| 1007 | estack_ax_t = REG_S64; |
| 1008 | next_pc += sizeof(struct binary_op); |
| 1009 | PO; |
| 1010 | } |
| 1011 | |
| 1012 | /* Mixed S64-double binary comparators */ |
| 1013 | OP(FILTER_OP_EQ_DOUBLE_S64): |
| 1014 | { |
| 1015 | int res; |
| 1016 | |
| 1017 | res = (estack_bx(stack, top)->u.d == estack_ax_v); |
| 1018 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1019 | estack_ax_v = res; |
| 1020 | estack_ax_t = REG_S64; |
| 1021 | next_pc += sizeof(struct binary_op); |
| 1022 | PO; |
| 1023 | } |
| 1024 | OP(FILTER_OP_NE_DOUBLE_S64): |
| 1025 | { |
| 1026 | int res; |
| 1027 | |
| 1028 | res = (estack_bx(stack, top)->u.d != estack_ax_v); |
| 1029 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1030 | estack_ax_v = res; |
| 1031 | estack_ax_t = REG_S64; |
| 1032 | next_pc += sizeof(struct binary_op); |
| 1033 | PO; |
| 1034 | } |
| 1035 | OP(FILTER_OP_GT_DOUBLE_S64): |
| 1036 | { |
| 1037 | int res; |
| 1038 | |
| 1039 | res = (estack_bx(stack, top)->u.d > estack_ax_v); |
| 1040 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1041 | estack_ax_v = res; |
| 1042 | estack_ax_t = REG_S64; |
| 1043 | next_pc += sizeof(struct binary_op); |
| 1044 | PO; |
| 1045 | } |
| 1046 | OP(FILTER_OP_LT_DOUBLE_S64): |
| 1047 | { |
| 1048 | int res; |
| 1049 | |
| 1050 | res = (estack_bx(stack, top)->u.d < estack_ax_v); |
| 1051 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1052 | estack_ax_v = res; |
| 1053 | estack_ax_t = REG_S64; |
| 1054 | next_pc += sizeof(struct binary_op); |
| 1055 | PO; |
| 1056 | } |
| 1057 | OP(FILTER_OP_GE_DOUBLE_S64): |
| 1058 | { |
| 1059 | int res; |
| 1060 | |
| 1061 | res = (estack_bx(stack, top)->u.d >= estack_ax_v); |
| 1062 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1063 | estack_ax_v = res; |
| 1064 | estack_ax_t = REG_S64; |
| 1065 | next_pc += sizeof(struct binary_op); |
| 1066 | PO; |
| 1067 | } |
| 1068 | OP(FILTER_OP_LE_DOUBLE_S64): |
| 1069 | { |
| 1070 | int res; |
| 1071 | |
| 1072 | res = (estack_bx(stack, top)->u.d <= estack_ax_v); |
| 1073 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1074 | estack_ax_v = res; |
| 1075 | estack_ax_t = REG_S64; |
| 1076 | next_pc += sizeof(struct binary_op); |
| 1077 | PO; |
| 1078 | } |
| 1079 | |
| 1080 | OP(FILTER_OP_EQ_S64_DOUBLE): |
| 1081 | { |
| 1082 | int res; |
| 1083 | |
| 1084 | res = (estack_bx_v == estack_ax(stack, top)->u.d); |
| 1085 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1086 | estack_ax_v = res; |
| 1087 | estack_ax_t = REG_S64; |
| 1088 | next_pc += sizeof(struct binary_op); |
| 1089 | PO; |
| 1090 | } |
| 1091 | OP(FILTER_OP_NE_S64_DOUBLE): |
| 1092 | { |
| 1093 | int res; |
| 1094 | |
| 1095 | res = (estack_bx_v != estack_ax(stack, top)->u.d); |
| 1096 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1097 | estack_ax_v = res; |
| 1098 | estack_ax_t = REG_S64; |
| 1099 | next_pc += sizeof(struct binary_op); |
| 1100 | PO; |
| 1101 | } |
| 1102 | OP(FILTER_OP_GT_S64_DOUBLE): |
| 1103 | { |
| 1104 | int res; |
| 1105 | |
| 1106 | res = (estack_bx_v > estack_ax(stack, top)->u.d); |
| 1107 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1108 | estack_ax_v = res; |
| 1109 | estack_ax_t = REG_S64; |
| 1110 | next_pc += sizeof(struct binary_op); |
| 1111 | PO; |
| 1112 | } |
| 1113 | OP(FILTER_OP_LT_S64_DOUBLE): |
| 1114 | { |
| 1115 | int res; |
| 1116 | |
| 1117 | res = (estack_bx_v < estack_ax(stack, top)->u.d); |
| 1118 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1119 | estack_ax_v = res; |
| 1120 | estack_ax_t = REG_S64; |
| 1121 | next_pc += sizeof(struct binary_op); |
| 1122 | PO; |
| 1123 | } |
| 1124 | OP(FILTER_OP_GE_S64_DOUBLE): |
| 1125 | { |
| 1126 | int res; |
| 1127 | |
| 1128 | res = (estack_bx_v >= estack_ax(stack, top)->u.d); |
| 1129 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1130 | estack_ax_v = res; |
| 1131 | estack_ax_t = REG_S64; |
| 1132 | next_pc += sizeof(struct binary_op); |
| 1133 | PO; |
| 1134 | } |
| 1135 | OP(FILTER_OP_LE_S64_DOUBLE): |
| 1136 | { |
| 1137 | int res; |
| 1138 | |
| 1139 | res = (estack_bx_v <= estack_ax(stack, top)->u.d); |
| 1140 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1141 | estack_ax_v = res; |
| 1142 | estack_ax_t = REG_S64; |
| 1143 | next_pc += sizeof(struct binary_op); |
| 1144 | PO; |
| 1145 | } |
| 1146 | |
| 1147 | /* unary */ |
| 1148 | OP(FILTER_OP_UNARY_PLUS): |
| 1149 | { |
| 1150 | /* Dynamic typing. */ |
| 1151 | switch (estack_ax_t) { |
| 1152 | case REG_S64: /* Fall-through. */ |
| 1153 | JUMP_TO(FILTER_OP_UNARY_PLUS_S64); |
| 1154 | case REG_DOUBLE: |
| 1155 | JUMP_TO(FILTER_OP_UNARY_PLUS_DOUBLE); |
| 1156 | case REG_STRING: /* Fall-through */ |
| 1157 | case REG_STAR_GLOB_STRING: |
| 1158 | ret = -EINVAL; |
| 1159 | goto end; |
| 1160 | default: |
| 1161 | ERR("Unknown filter register type (%d)", |
| 1162 | (int) estack_ax_t); |
| 1163 | ret = -EINVAL; |
| 1164 | goto end; |
| 1165 | } |
| 1166 | } |
| 1167 | OP(FILTER_OP_UNARY_MINUS): |
| 1168 | { |
| 1169 | /* Dynamic typing. */ |
| 1170 | switch (estack_ax_t) { |
| 1171 | case REG_S64: |
| 1172 | JUMP_TO(FILTER_OP_UNARY_MINUS_S64); |
| 1173 | case REG_DOUBLE: |
| 1174 | JUMP_TO(FILTER_OP_UNARY_MINUS_DOUBLE); |
| 1175 | case REG_STRING: /* Fall-through */ |
| 1176 | case REG_STAR_GLOB_STRING: |
| 1177 | ret = -EINVAL; |
| 1178 | goto end; |
| 1179 | default: |
| 1180 | ERR("Unknown filter register type (%d)", |
| 1181 | (int) estack_ax_t); |
| 1182 | ret = -EINVAL; |
| 1183 | goto end; |
| 1184 | } |
| 1185 | } |
| 1186 | OP(FILTER_OP_UNARY_NOT): |
| 1187 | { |
| 1188 | /* Dynamic typing. */ |
| 1189 | switch (estack_ax_t) { |
| 1190 | case REG_S64: |
| 1191 | JUMP_TO(FILTER_OP_UNARY_NOT_S64); |
| 1192 | case REG_DOUBLE: |
| 1193 | JUMP_TO(FILTER_OP_UNARY_NOT_DOUBLE); |
| 1194 | case REG_STRING: /* Fall-through */ |
| 1195 | case REG_STAR_GLOB_STRING: |
| 1196 | ret = -EINVAL; |
| 1197 | goto end; |
| 1198 | default: |
| 1199 | ERR("Unknown filter register type (%d)", |
| 1200 | (int) estack_ax_t); |
| 1201 | ret = -EINVAL; |
| 1202 | goto end; |
| 1203 | } |
| 1204 | next_pc += sizeof(struct unary_op); |
| 1205 | PO; |
| 1206 | } |
| 1207 | |
| 1208 | OP(FILTER_OP_UNARY_PLUS_S64): |
| 1209 | OP(FILTER_OP_UNARY_PLUS_DOUBLE): |
| 1210 | { |
| 1211 | next_pc += sizeof(struct unary_op); |
| 1212 | PO; |
| 1213 | } |
| 1214 | OP(FILTER_OP_UNARY_MINUS_S64): |
| 1215 | { |
| 1216 | estack_ax_v = -estack_ax_v; |
| 1217 | next_pc += sizeof(struct unary_op); |
| 1218 | PO; |
| 1219 | } |
| 1220 | OP(FILTER_OP_UNARY_MINUS_DOUBLE): |
| 1221 | { |
| 1222 | estack_ax(stack, top)->u.d = -estack_ax(stack, top)->u.d; |
| 1223 | next_pc += sizeof(struct unary_op); |
| 1224 | PO; |
| 1225 | } |
| 1226 | OP(FILTER_OP_UNARY_NOT_S64): |
| 1227 | { |
| 1228 | estack_ax_v = !estack_ax_v; |
| 1229 | next_pc += sizeof(struct unary_op); |
| 1230 | PO; |
| 1231 | } |
| 1232 | OP(FILTER_OP_UNARY_NOT_DOUBLE): |
| 1233 | { |
| 1234 | estack_ax_v = !estack_ax(stack, top)->u.d; |
| 1235 | estack_ax_t = REG_S64; |
| 1236 | next_pc += sizeof(struct unary_op); |
| 1237 | PO; |
| 1238 | } |
| 1239 | |
| 1240 | /* logical */ |
| 1241 | OP(FILTER_OP_AND): |
| 1242 | { |
| 1243 | struct logical_op *insn = (struct logical_op *) pc; |
| 1244 | |
| 1245 | if (estack_ax_t != REG_S64) { |
| 1246 | ret = -EINVAL; |
| 1247 | goto end; |
| 1248 | } |
| 1249 | /* If AX is 0, skip and evaluate to 0 */ |
| 1250 | if (unlikely(estack_ax_v == 0)) { |
| 1251 | dbg_printf("Jumping to bytecode offset %u\n", |
| 1252 | (unsigned int) insn->skip_offset); |
| 1253 | next_pc = start_pc + insn->skip_offset; |
| 1254 | } else { |
| 1255 | /* Pop 1 when jump not taken */ |
| 1256 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1257 | next_pc += sizeof(struct logical_op); |
| 1258 | } |
| 1259 | PO; |
| 1260 | } |
| 1261 | OP(FILTER_OP_OR): |
| 1262 | { |
| 1263 | struct logical_op *insn = (struct logical_op *) pc; |
| 1264 | |
| 1265 | if (estack_ax_t != REG_S64) { |
| 1266 | ret = -EINVAL; |
| 1267 | goto end; |
| 1268 | } |
| 1269 | /* If AX is nonzero, skip and evaluate to 1 */ |
| 1270 | if (unlikely(estack_ax_v != 0)) { |
| 1271 | estack_ax_v = 1; |
| 1272 | dbg_printf("Jumping to bytecode offset %u\n", |
| 1273 | (unsigned int) insn->skip_offset); |
| 1274 | next_pc = start_pc + insn->skip_offset; |
| 1275 | } else { |
| 1276 | /* Pop 1 when jump not taken */ |
| 1277 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1278 | next_pc += sizeof(struct logical_op); |
| 1279 | } |
| 1280 | PO; |
| 1281 | } |
| 1282 | |
| 1283 | |
| 1284 | /* load field ref */ |
| 1285 | OP(FILTER_OP_LOAD_FIELD_REF_STRING): |
| 1286 | { |
| 1287 | struct load_op *insn = (struct load_op *) pc; |
| 1288 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1289 | |
| 1290 | dbg_printf("load field ref offset %u type string\n", |
| 1291 | ref->offset); |
| 1292 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1293 | estack_ax(stack, top)->u.s.str = |
| 1294 | *(const char * const *) &filter_stack_data[ref->offset]; |
| 1295 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
| 1296 | dbg_printf("Filter warning: loading a NULL string.\n"); |
| 1297 | ret = -EINVAL; |
| 1298 | goto end; |
| 1299 | } |
| 1300 | estack_ax(stack, top)->u.s.seq_len = SIZE_MAX; |
| 1301 | estack_ax(stack, top)->u.s.literal_type = |
| 1302 | ESTACK_STRING_LITERAL_TYPE_NONE; |
| 1303 | estack_ax_t = REG_STRING; |
| 1304 | dbg_printf("ref load string %s\n", estack_ax(stack, top)->u.s.str); |
| 1305 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1306 | PO; |
| 1307 | } |
| 1308 | |
| 1309 | OP(FILTER_OP_LOAD_FIELD_REF_SEQUENCE): |
| 1310 | { |
| 1311 | struct load_op *insn = (struct load_op *) pc; |
| 1312 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1313 | |
| 1314 | dbg_printf("load field ref offset %u type sequence\n", |
| 1315 | ref->offset); |
| 1316 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1317 | estack_ax(stack, top)->u.s.seq_len = |
| 1318 | *(unsigned long *) &filter_stack_data[ref->offset]; |
| 1319 | estack_ax(stack, top)->u.s.str = |
| 1320 | *(const char **) (&filter_stack_data[ref->offset |
| 1321 | + sizeof(unsigned long)]); |
| 1322 | estack_ax_t = REG_STRING; |
| 1323 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
| 1324 | dbg_printf("Filter warning: loading a NULL sequence.\n"); |
| 1325 | ret = -EINVAL; |
| 1326 | goto end; |
| 1327 | } |
| 1328 | estack_ax(stack, top)->u.s.literal_type = |
| 1329 | ESTACK_STRING_LITERAL_TYPE_NONE; |
| 1330 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1331 | PO; |
| 1332 | } |
| 1333 | |
| 1334 | OP(FILTER_OP_LOAD_FIELD_REF_S64): |
| 1335 | { |
| 1336 | struct load_op *insn = (struct load_op *) pc; |
| 1337 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1338 | |
| 1339 | dbg_printf("load field ref offset %u type s64\n", |
| 1340 | ref->offset); |
| 1341 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1342 | estack_ax_v = |
| 1343 | ((struct literal_numeric *) &filter_stack_data[ref->offset])->v; |
| 1344 | estack_ax_t = REG_S64; |
| 1345 | dbg_printf("ref load s64 %" PRIi64 "\n", estack_ax_v); |
| 1346 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1347 | PO; |
| 1348 | } |
| 1349 | |
| 1350 | OP(FILTER_OP_LOAD_FIELD_REF_DOUBLE): |
| 1351 | { |
| 1352 | struct load_op *insn = (struct load_op *) pc; |
| 1353 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1354 | |
| 1355 | dbg_printf("load field ref offset %u type double\n", |
| 1356 | ref->offset); |
| 1357 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1358 | memcpy(&estack_ax(stack, top)->u.d, &filter_stack_data[ref->offset], |
| 1359 | sizeof(struct literal_double)); |
| 1360 | estack_ax_t = REG_DOUBLE; |
| 1361 | dbg_printf("ref load double %g\n", estack_ax(stack, top)->u.d); |
| 1362 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1363 | PO; |
| 1364 | } |
| 1365 | |
| 1366 | /* load from immediate operand */ |
| 1367 | OP(FILTER_OP_LOAD_STRING): |
| 1368 | { |
| 1369 | struct load_op *insn = (struct load_op *) pc; |
| 1370 | |
| 1371 | dbg_printf("load string %s\n", insn->data); |
| 1372 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1373 | estack_ax(stack, top)->u.s.str = insn->data; |
| 1374 | estack_ax(stack, top)->u.s.seq_len = SIZE_MAX; |
| 1375 | estack_ax(stack, top)->u.s.literal_type = |
| 1376 | ESTACK_STRING_LITERAL_TYPE_PLAIN; |
| 1377 | estack_ax_t = REG_STRING; |
| 1378 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
| 1379 | PO; |
| 1380 | } |
| 1381 | |
| 1382 | OP(FILTER_OP_LOAD_STAR_GLOB_STRING): |
| 1383 | { |
| 1384 | struct load_op *insn = (struct load_op *) pc; |
| 1385 | |
| 1386 | dbg_printf("load globbing pattern %s\n", insn->data); |
| 1387 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1388 | estack_ax(stack, top)->u.s.str = insn->data; |
| 1389 | estack_ax(stack, top)->u.s.seq_len = SIZE_MAX; |
| 1390 | estack_ax(stack, top)->u.s.literal_type = |
| 1391 | ESTACK_STRING_LITERAL_TYPE_STAR_GLOB; |
| 1392 | estack_ax_t = REG_STAR_GLOB_STRING; |
| 1393 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
| 1394 | PO; |
| 1395 | } |
| 1396 | |
| 1397 | OP(FILTER_OP_LOAD_S64): |
| 1398 | { |
| 1399 | struct load_op *insn = (struct load_op *) pc; |
| 1400 | |
| 1401 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1402 | estack_ax_v = ((struct literal_numeric *) insn->data)->v; |
| 1403 | estack_ax_t = REG_S64; |
| 1404 | dbg_printf("load s64 %" PRIi64 "\n", estack_ax_v); |
| 1405 | next_pc += sizeof(struct load_op) |
| 1406 | + sizeof(struct literal_numeric); |
| 1407 | PO; |
| 1408 | } |
| 1409 | |
| 1410 | OP(FILTER_OP_LOAD_DOUBLE): |
| 1411 | { |
| 1412 | struct load_op *insn = (struct load_op *) pc; |
| 1413 | |
| 1414 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1415 | memcpy(&estack_ax(stack, top)->u.d, insn->data, |
| 1416 | sizeof(struct literal_double)); |
| 1417 | estack_ax_t = REG_DOUBLE; |
| 1418 | dbg_printf("load double %g\n", estack_ax(stack, top)->u.d); |
| 1419 | next_pc += sizeof(struct load_op) |
| 1420 | + sizeof(struct literal_double); |
| 1421 | PO; |
| 1422 | } |
| 1423 | |
| 1424 | /* cast */ |
| 1425 | OP(FILTER_OP_CAST_TO_S64): |
| 1426 | { |
| 1427 | /* Dynamic typing. */ |
| 1428 | switch (estack_ax_t) { |
| 1429 | case REG_S64: |
| 1430 | JUMP_TO(FILTER_OP_CAST_NOP); |
| 1431 | case REG_DOUBLE: |
| 1432 | JUMP_TO(FILTER_OP_CAST_DOUBLE_TO_S64); |
| 1433 | case REG_STRING: /* Fall-through */ |
| 1434 | case REG_STAR_GLOB_STRING: |
| 1435 | ret = -EINVAL; |
| 1436 | goto end; |
| 1437 | default: |
| 1438 | ERR("Unknown filter register type (%d)", |
| 1439 | (int) estack_ax_t); |
| 1440 | ret = -EINVAL; |
| 1441 | goto end; |
| 1442 | } |
| 1443 | } |
| 1444 | |
| 1445 | OP(FILTER_OP_CAST_DOUBLE_TO_S64): |
| 1446 | { |
| 1447 | estack_ax_v = (int64_t) estack_ax(stack, top)->u.d; |
| 1448 | estack_ax_t = REG_S64; |
| 1449 | next_pc += sizeof(struct cast_op); |
| 1450 | PO; |
| 1451 | } |
| 1452 | |
| 1453 | OP(FILTER_OP_CAST_NOP): |
| 1454 | { |
| 1455 | next_pc += sizeof(struct cast_op); |
| 1456 | PO; |
| 1457 | } |
| 1458 | |
| 1459 | /* get context ref */ |
| 1460 | OP(FILTER_OP_GET_CONTEXT_REF): |
| 1461 | { |
| 1462 | struct load_op *insn = (struct load_op *) pc; |
| 1463 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1464 | struct lttng_ctx *ctx; |
| 1465 | struct lttng_ctx_field *ctx_field; |
| 1466 | struct lttng_ctx_value v; |
| 1467 | |
| 1468 | dbg_printf("get context ref offset %u type dynamic\n", |
| 1469 | ref->offset); |
| 1470 | ctx = rcu_dereference(session->ctx); |
| 1471 | ctx_field = &ctx->fields[ref->offset]; |
| 1472 | ctx_field->get_value(ctx_field, &v); |
| 1473 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1474 | switch (v.sel) { |
| 1475 | case LTTNG_UST_DYNAMIC_TYPE_NONE: |
| 1476 | ret = -EINVAL; |
| 1477 | goto end; |
| 1478 | case LTTNG_UST_DYNAMIC_TYPE_S64: |
| 1479 | estack_ax_v = v.u.s64; |
| 1480 | estack_ax_t = REG_S64; |
| 1481 | dbg_printf("ref get context dynamic s64 %" PRIi64 "\n", estack_ax_v); |
| 1482 | break; |
| 1483 | case LTTNG_UST_DYNAMIC_TYPE_DOUBLE: |
| 1484 | estack_ax(stack, top)->u.d = v.u.d; |
| 1485 | estack_ax_t = REG_DOUBLE; |
| 1486 | dbg_printf("ref get context dynamic double %g\n", estack_ax(stack, top)->u.d); |
| 1487 | break; |
| 1488 | case LTTNG_UST_DYNAMIC_TYPE_STRING: |
| 1489 | estack_ax(stack, top)->u.s.str = v.u.str; |
| 1490 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
| 1491 | dbg_printf("Filter warning: loading a NULL string.\n"); |
| 1492 | ret = -EINVAL; |
| 1493 | goto end; |
| 1494 | } |
| 1495 | estack_ax(stack, top)->u.s.seq_len = SIZE_MAX; |
| 1496 | estack_ax(stack, top)->u.s.literal_type = |
| 1497 | ESTACK_STRING_LITERAL_TYPE_NONE; |
| 1498 | dbg_printf("ref get context dynamic string %s\n", estack_ax(stack, top)->u.s.str); |
| 1499 | estack_ax_t = REG_STRING; |
| 1500 | break; |
| 1501 | default: |
| 1502 | dbg_printf("Filter warning: unknown dynamic type (%d).\n", (int) v.sel); |
| 1503 | ret = -EINVAL; |
| 1504 | goto end; |
| 1505 | } |
| 1506 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1507 | PO; |
| 1508 | } |
| 1509 | |
| 1510 | OP(FILTER_OP_GET_CONTEXT_REF_STRING): |
| 1511 | { |
| 1512 | struct load_op *insn = (struct load_op *) pc; |
| 1513 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1514 | struct lttng_ctx *ctx; |
| 1515 | struct lttng_ctx_field *ctx_field; |
| 1516 | struct lttng_ctx_value v; |
| 1517 | |
| 1518 | dbg_printf("get context ref offset %u type string\n", |
| 1519 | ref->offset); |
| 1520 | ctx = rcu_dereference(session->ctx); |
| 1521 | ctx_field = &ctx->fields[ref->offset]; |
| 1522 | ctx_field->get_value(ctx_field, &v); |
| 1523 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1524 | estack_ax(stack, top)->u.s.str = v.u.str; |
| 1525 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
| 1526 | dbg_printf("Filter warning: loading a NULL string.\n"); |
| 1527 | ret = -EINVAL; |
| 1528 | goto end; |
| 1529 | } |
| 1530 | estack_ax(stack, top)->u.s.seq_len = SIZE_MAX; |
| 1531 | estack_ax(stack, top)->u.s.literal_type = |
| 1532 | ESTACK_STRING_LITERAL_TYPE_NONE; |
| 1533 | estack_ax_t = REG_STRING; |
| 1534 | dbg_printf("ref get context string %s\n", estack_ax(stack, top)->u.s.str); |
| 1535 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1536 | PO; |
| 1537 | } |
| 1538 | |
| 1539 | OP(FILTER_OP_GET_CONTEXT_REF_S64): |
| 1540 | { |
| 1541 | struct load_op *insn = (struct load_op *) pc; |
| 1542 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1543 | struct lttng_ctx *ctx; |
| 1544 | struct lttng_ctx_field *ctx_field; |
| 1545 | struct lttng_ctx_value v; |
| 1546 | |
| 1547 | dbg_printf("get context ref offset %u type s64\n", |
| 1548 | ref->offset); |
| 1549 | ctx = rcu_dereference(session->ctx); |
| 1550 | ctx_field = &ctx->fields[ref->offset]; |
| 1551 | ctx_field->get_value(ctx_field, &v); |
| 1552 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1553 | estack_ax_v = v.u.s64; |
| 1554 | estack_ax_t = REG_S64; |
| 1555 | dbg_printf("ref get context s64 %" PRIi64 "\n", estack_ax_v); |
| 1556 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1557 | PO; |
| 1558 | } |
| 1559 | |
| 1560 | OP(FILTER_OP_GET_CONTEXT_REF_DOUBLE): |
| 1561 | { |
| 1562 | struct load_op *insn = (struct load_op *) pc; |
| 1563 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1564 | struct lttng_ctx *ctx; |
| 1565 | struct lttng_ctx_field *ctx_field; |
| 1566 | struct lttng_ctx_value v; |
| 1567 | |
| 1568 | dbg_printf("get context ref offset %u type double\n", |
| 1569 | ref->offset); |
| 1570 | ctx = rcu_dereference(session->ctx); |
| 1571 | ctx_field = &ctx->fields[ref->offset]; |
| 1572 | ctx_field->get_value(ctx_field, &v); |
| 1573 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1574 | memcpy(&estack_ax(stack, top)->u.d, &v.u.d, sizeof(struct literal_double)); |
| 1575 | estack_ax_t = REG_DOUBLE; |
| 1576 | dbg_printf("ref get context double %g\n", estack_ax(stack, top)->u.d); |
| 1577 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1578 | PO; |
| 1579 | } |
| 1580 | |
| 1581 | END_OP |
| 1582 | end: |
| 1583 | /* return 0 (discard) on error */ |
| 1584 | if (ret) |
| 1585 | return 0; |
| 1586 | return retval; |
| 1587 | } |
| 1588 | |
| 1589 | #undef START_OP |
| 1590 | #undef OP |
| 1591 | #undef PO |
| 1592 | #undef END_OP |