| 1 | /* |
| 2 | * lttng-filter-interpreter.c |
| 3 | * |
| 4 | * LTTng UST filter interpreter. |
| 5 | * |
| 6 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; only |
| 11 | * version 2.1 of the License. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with this library; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #define _LGPL_SOURCE |
| 24 | #include <urcu-pointer.h> |
| 25 | #include "lttng-filter.h" |
| 26 | |
| 27 | /* |
| 28 | * -1: wildcard found. |
| 29 | * -2: unknown escape char. |
| 30 | * 0: normal char. |
| 31 | */ |
| 32 | |
| 33 | static |
| 34 | int parse_char(const char **p) |
| 35 | { |
| 36 | switch (**p) { |
| 37 | case '\\': |
| 38 | (*p)++; |
| 39 | switch (**p) { |
| 40 | case '\\': |
| 41 | case '*': |
| 42 | return 0; |
| 43 | default: |
| 44 | return -2; |
| 45 | } |
| 46 | case '*': |
| 47 | return -1; |
| 48 | default: |
| 49 | return 0; |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | static |
| 54 | int stack_strcmp(struct estack *stack, int top, const char *cmp_type) |
| 55 | { |
| 56 | const char *p = estack_bx(stack, top)->u.s.str, *q = estack_ax(stack, top)->u.s.str; |
| 57 | int ret; |
| 58 | int diff; |
| 59 | |
| 60 | for (;;) { |
| 61 | int escaped_r0 = 0; |
| 62 | |
| 63 | if (unlikely(p - estack_bx(stack, top)->u.s.str >= estack_bx(stack, top)->u.s.seq_len || *p == '\0')) { |
| 64 | if (q - estack_ax(stack, top)->u.s.str >= estack_ax(stack, top)->u.s.seq_len || *q == '\0') { |
| 65 | return 0; |
| 66 | } else { |
| 67 | if (estack_ax(stack, top)->u.s.literal) { |
| 68 | ret = parse_char(&q); |
| 69 | if (ret == -1) |
| 70 | return 0; |
| 71 | } |
| 72 | return -1; |
| 73 | } |
| 74 | } |
| 75 | if (unlikely(q - estack_ax(stack, top)->u.s.str >= estack_ax(stack, top)->u.s.seq_len || *q == '\0')) { |
| 76 | if (estack_bx(stack, top)->u.s.literal) { |
| 77 | ret = parse_char(&p); |
| 78 | if (ret == -1) |
| 79 | return 0; |
| 80 | } |
| 81 | return 1; |
| 82 | } |
| 83 | if (estack_bx(stack, top)->u.s.literal) { |
| 84 | ret = parse_char(&p); |
| 85 | if (ret == -1) { |
| 86 | return 0; |
| 87 | } else if (ret == -2) { |
| 88 | escaped_r0 = 1; |
| 89 | } |
| 90 | /* else compare both char */ |
| 91 | } |
| 92 | if (estack_ax(stack, top)->u.s.literal) { |
| 93 | ret = parse_char(&q); |
| 94 | if (ret == -1) { |
| 95 | return 0; |
| 96 | } else if (ret == -2) { |
| 97 | if (!escaped_r0) |
| 98 | return -1; |
| 99 | } else { |
| 100 | if (escaped_r0) |
| 101 | return 1; |
| 102 | } |
| 103 | } else { |
| 104 | if (escaped_r0) |
| 105 | return 1; |
| 106 | } |
| 107 | diff = *p - *q; |
| 108 | if (diff != 0) |
| 109 | break; |
| 110 | p++; |
| 111 | q++; |
| 112 | } |
| 113 | return diff; |
| 114 | } |
| 115 | |
| 116 | uint64_t lttng_filter_false(void *filter_data, |
| 117 | const char *filter_stack_data) |
| 118 | { |
| 119 | return 0; |
| 120 | } |
| 121 | |
| 122 | #ifdef INTERPRETER_USE_SWITCH |
| 123 | |
| 124 | /* |
| 125 | * Fallback for compilers that do not support taking address of labels. |
| 126 | */ |
| 127 | |
| 128 | #define START_OP \ |
| 129 | start_pc = &bytecode->data[0]; \ |
| 130 | for (pc = next_pc = start_pc; pc - start_pc < bytecode->len; \ |
| 131 | pc = next_pc) { \ |
| 132 | dbg_printf("Executing op %s (%u)\n", \ |
| 133 | print_op((unsigned int) *(filter_opcode_t *) pc), \ |
| 134 | (unsigned int) *(filter_opcode_t *) pc); \ |
| 135 | switch (*(filter_opcode_t *) pc) { |
| 136 | |
| 137 | #define OP(name) jump_target_##name: __attribute__((unused)); \ |
| 138 | case name |
| 139 | |
| 140 | #define PO break |
| 141 | |
| 142 | #define END_OP } \ |
| 143 | } |
| 144 | |
| 145 | #define JUMP_TO(name) \ |
| 146 | goto jump_target_##name |
| 147 | |
| 148 | #else |
| 149 | |
| 150 | /* |
| 151 | * Dispatch-table based interpreter. |
| 152 | */ |
| 153 | |
| 154 | #define START_OP \ |
| 155 | start_pc = &bytecode->data[0]; \ |
| 156 | pc = next_pc = start_pc; \ |
| 157 | if (unlikely(pc - start_pc >= bytecode->len)) \ |
| 158 | goto end; \ |
| 159 | goto *dispatch[*(filter_opcode_t *) pc]; |
| 160 | |
| 161 | #define OP(name) \ |
| 162 | LABEL_##name |
| 163 | |
| 164 | #define PO \ |
| 165 | pc = next_pc; \ |
| 166 | goto *dispatch[*(filter_opcode_t *) pc]; |
| 167 | |
| 168 | #define END_OP |
| 169 | |
| 170 | #define JUMP_TO(name) \ |
| 171 | goto LABEL_##name |
| 172 | |
| 173 | #endif |
| 174 | |
| 175 | /* |
| 176 | * Return 0 (discard), or raise the 0x1 flag (log event). |
| 177 | * Currently, other flags are kept for future extensions and have no |
| 178 | * effect. |
| 179 | */ |
| 180 | uint64_t lttng_filter_interpret_bytecode(void *filter_data, |
| 181 | const char *filter_stack_data) |
| 182 | { |
| 183 | struct bytecode_runtime *bytecode = filter_data; |
| 184 | struct lttng_session *session = bytecode->p.session; |
| 185 | void *pc, *next_pc, *start_pc; |
| 186 | int ret = -EINVAL; |
| 187 | uint64_t retval = 0; |
| 188 | struct estack _stack; |
| 189 | struct estack *stack = &_stack; |
| 190 | register int64_t ax = 0, bx = 0; |
| 191 | register enum entry_type ax_t = REG_UNKNOWN, bx_t = REG_UNKNOWN; |
| 192 | register int top = FILTER_STACK_EMPTY; |
| 193 | #ifndef INTERPRETER_USE_SWITCH |
| 194 | static void *dispatch[NR_FILTER_OPS] = { |
| 195 | [ FILTER_OP_UNKNOWN ] = &&LABEL_FILTER_OP_UNKNOWN, |
| 196 | |
| 197 | [ FILTER_OP_RETURN ] = &&LABEL_FILTER_OP_RETURN, |
| 198 | |
| 199 | /* binary */ |
| 200 | [ FILTER_OP_MUL ] = &&LABEL_FILTER_OP_MUL, |
| 201 | [ FILTER_OP_DIV ] = &&LABEL_FILTER_OP_DIV, |
| 202 | [ FILTER_OP_MOD ] = &&LABEL_FILTER_OP_MOD, |
| 203 | [ FILTER_OP_PLUS ] = &&LABEL_FILTER_OP_PLUS, |
| 204 | [ FILTER_OP_MINUS ] = &&LABEL_FILTER_OP_MINUS, |
| 205 | [ FILTER_OP_RSHIFT ] = &&LABEL_FILTER_OP_RSHIFT, |
| 206 | [ FILTER_OP_LSHIFT ] = &&LABEL_FILTER_OP_LSHIFT, |
| 207 | [ FILTER_OP_BIN_AND ] = &&LABEL_FILTER_OP_BIN_AND, |
| 208 | [ FILTER_OP_BIN_OR ] = &&LABEL_FILTER_OP_BIN_OR, |
| 209 | [ FILTER_OP_BIN_XOR ] = &&LABEL_FILTER_OP_BIN_XOR, |
| 210 | |
| 211 | /* binary comparators */ |
| 212 | [ FILTER_OP_EQ ] = &&LABEL_FILTER_OP_EQ, |
| 213 | [ FILTER_OP_NE ] = &&LABEL_FILTER_OP_NE, |
| 214 | [ FILTER_OP_GT ] = &&LABEL_FILTER_OP_GT, |
| 215 | [ FILTER_OP_LT ] = &&LABEL_FILTER_OP_LT, |
| 216 | [ FILTER_OP_GE ] = &&LABEL_FILTER_OP_GE, |
| 217 | [ FILTER_OP_LE ] = &&LABEL_FILTER_OP_LE, |
| 218 | |
| 219 | /* string binary comparator */ |
| 220 | [ FILTER_OP_EQ_STRING ] = &&LABEL_FILTER_OP_EQ_STRING, |
| 221 | [ FILTER_OP_NE_STRING ] = &&LABEL_FILTER_OP_NE_STRING, |
| 222 | [ FILTER_OP_GT_STRING ] = &&LABEL_FILTER_OP_GT_STRING, |
| 223 | [ FILTER_OP_LT_STRING ] = &&LABEL_FILTER_OP_LT_STRING, |
| 224 | [ FILTER_OP_GE_STRING ] = &&LABEL_FILTER_OP_GE_STRING, |
| 225 | [ FILTER_OP_LE_STRING ] = &&LABEL_FILTER_OP_LE_STRING, |
| 226 | |
| 227 | /* s64 binary comparator */ |
| 228 | [ FILTER_OP_EQ_S64 ] = &&LABEL_FILTER_OP_EQ_S64, |
| 229 | [ FILTER_OP_NE_S64 ] = &&LABEL_FILTER_OP_NE_S64, |
| 230 | [ FILTER_OP_GT_S64 ] = &&LABEL_FILTER_OP_GT_S64, |
| 231 | [ FILTER_OP_LT_S64 ] = &&LABEL_FILTER_OP_LT_S64, |
| 232 | [ FILTER_OP_GE_S64 ] = &&LABEL_FILTER_OP_GE_S64, |
| 233 | [ FILTER_OP_LE_S64 ] = &&LABEL_FILTER_OP_LE_S64, |
| 234 | |
| 235 | /* double binary comparator */ |
| 236 | [ FILTER_OP_EQ_DOUBLE ] = &&LABEL_FILTER_OP_EQ_DOUBLE, |
| 237 | [ FILTER_OP_NE_DOUBLE ] = &&LABEL_FILTER_OP_NE_DOUBLE, |
| 238 | [ FILTER_OP_GT_DOUBLE ] = &&LABEL_FILTER_OP_GT_DOUBLE, |
| 239 | [ FILTER_OP_LT_DOUBLE ] = &&LABEL_FILTER_OP_LT_DOUBLE, |
| 240 | [ FILTER_OP_GE_DOUBLE ] = &&LABEL_FILTER_OP_GE_DOUBLE, |
| 241 | [ FILTER_OP_LE_DOUBLE ] = &&LABEL_FILTER_OP_LE_DOUBLE, |
| 242 | |
| 243 | /* Mixed S64-double binary comparators */ |
| 244 | [ FILTER_OP_EQ_DOUBLE_S64 ] = &&LABEL_FILTER_OP_EQ_DOUBLE_S64, |
| 245 | [ FILTER_OP_NE_DOUBLE_S64 ] = &&LABEL_FILTER_OP_NE_DOUBLE_S64, |
| 246 | [ FILTER_OP_GT_DOUBLE_S64 ] = &&LABEL_FILTER_OP_GT_DOUBLE_S64, |
| 247 | [ FILTER_OP_LT_DOUBLE_S64 ] = &&LABEL_FILTER_OP_LT_DOUBLE_S64, |
| 248 | [ FILTER_OP_GE_DOUBLE_S64 ] = &&LABEL_FILTER_OP_GE_DOUBLE_S64, |
| 249 | [ FILTER_OP_LE_DOUBLE_S64 ] = &&LABEL_FILTER_OP_LE_DOUBLE_S64, |
| 250 | |
| 251 | [ FILTER_OP_EQ_S64_DOUBLE ] = &&LABEL_FILTER_OP_EQ_S64_DOUBLE, |
| 252 | [ FILTER_OP_NE_S64_DOUBLE ] = &&LABEL_FILTER_OP_NE_S64_DOUBLE, |
| 253 | [ FILTER_OP_GT_S64_DOUBLE ] = &&LABEL_FILTER_OP_GT_S64_DOUBLE, |
| 254 | [ FILTER_OP_LT_S64_DOUBLE ] = &&LABEL_FILTER_OP_LT_S64_DOUBLE, |
| 255 | [ FILTER_OP_GE_S64_DOUBLE ] = &&LABEL_FILTER_OP_GE_S64_DOUBLE, |
| 256 | [ FILTER_OP_LE_S64_DOUBLE ] = &&LABEL_FILTER_OP_LE_S64_DOUBLE, |
| 257 | |
| 258 | /* unary */ |
| 259 | [ FILTER_OP_UNARY_PLUS ] = &&LABEL_FILTER_OP_UNARY_PLUS, |
| 260 | [ FILTER_OP_UNARY_MINUS ] = &&LABEL_FILTER_OP_UNARY_MINUS, |
| 261 | [ FILTER_OP_UNARY_NOT ] = &&LABEL_FILTER_OP_UNARY_NOT, |
| 262 | [ FILTER_OP_UNARY_PLUS_S64 ] = &&LABEL_FILTER_OP_UNARY_PLUS_S64, |
| 263 | [ FILTER_OP_UNARY_MINUS_S64 ] = &&LABEL_FILTER_OP_UNARY_MINUS_S64, |
| 264 | [ FILTER_OP_UNARY_NOT_S64 ] = &&LABEL_FILTER_OP_UNARY_NOT_S64, |
| 265 | [ FILTER_OP_UNARY_PLUS_DOUBLE ] = &&LABEL_FILTER_OP_UNARY_PLUS_DOUBLE, |
| 266 | [ FILTER_OP_UNARY_MINUS_DOUBLE ] = &&LABEL_FILTER_OP_UNARY_MINUS_DOUBLE, |
| 267 | [ FILTER_OP_UNARY_NOT_DOUBLE ] = &&LABEL_FILTER_OP_UNARY_NOT_DOUBLE, |
| 268 | |
| 269 | /* logical */ |
| 270 | [ FILTER_OP_AND ] = &&LABEL_FILTER_OP_AND, |
| 271 | [ FILTER_OP_OR ] = &&LABEL_FILTER_OP_OR, |
| 272 | |
| 273 | /* load field ref */ |
| 274 | [ FILTER_OP_LOAD_FIELD_REF ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF, |
| 275 | [ FILTER_OP_LOAD_FIELD_REF_STRING ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_STRING, |
| 276 | [ FILTER_OP_LOAD_FIELD_REF_SEQUENCE ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_SEQUENCE, |
| 277 | [ FILTER_OP_LOAD_FIELD_REF_S64 ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_S64, |
| 278 | [ FILTER_OP_LOAD_FIELD_REF_DOUBLE ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_DOUBLE, |
| 279 | |
| 280 | /* load from immediate operand */ |
| 281 | [ FILTER_OP_LOAD_STRING ] = &&LABEL_FILTER_OP_LOAD_STRING, |
| 282 | [ FILTER_OP_LOAD_S64 ] = &&LABEL_FILTER_OP_LOAD_S64, |
| 283 | [ FILTER_OP_LOAD_DOUBLE ] = &&LABEL_FILTER_OP_LOAD_DOUBLE, |
| 284 | |
| 285 | /* cast */ |
| 286 | [ FILTER_OP_CAST_TO_S64 ] = &&LABEL_FILTER_OP_CAST_TO_S64, |
| 287 | [ FILTER_OP_CAST_DOUBLE_TO_S64 ] = &&LABEL_FILTER_OP_CAST_DOUBLE_TO_S64, |
| 288 | [ FILTER_OP_CAST_NOP ] = &&LABEL_FILTER_OP_CAST_NOP, |
| 289 | |
| 290 | /* get context ref */ |
| 291 | [ FILTER_OP_GET_CONTEXT_REF ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF, |
| 292 | [ FILTER_OP_GET_CONTEXT_REF_STRING ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_STRING, |
| 293 | [ FILTER_OP_GET_CONTEXT_REF_S64 ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_S64, |
| 294 | [ FILTER_OP_GET_CONTEXT_REF_DOUBLE ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_DOUBLE, |
| 295 | }; |
| 296 | #endif /* #ifndef INTERPRETER_USE_SWITCH */ |
| 297 | |
| 298 | START_OP |
| 299 | |
| 300 | OP(FILTER_OP_UNKNOWN): |
| 301 | OP(FILTER_OP_LOAD_FIELD_REF): |
| 302 | #ifdef INTERPRETER_USE_SWITCH |
| 303 | default: |
| 304 | #endif /* INTERPRETER_USE_SWITCH */ |
| 305 | ERR("unknown bytecode op %u\n", |
| 306 | (unsigned int) *(filter_opcode_t *) pc); |
| 307 | ret = -EINVAL; |
| 308 | goto end; |
| 309 | |
| 310 | OP(FILTER_OP_RETURN): |
| 311 | /* LTTNG_FILTER_DISCARD or LTTNG_FILTER_RECORD_FLAG */ |
| 312 | retval = !!estack_ax_v; |
| 313 | ret = 0; |
| 314 | goto end; |
| 315 | |
| 316 | /* binary */ |
| 317 | OP(FILTER_OP_MUL): |
| 318 | OP(FILTER_OP_DIV): |
| 319 | OP(FILTER_OP_MOD): |
| 320 | OP(FILTER_OP_PLUS): |
| 321 | OP(FILTER_OP_MINUS): |
| 322 | OP(FILTER_OP_RSHIFT): |
| 323 | OP(FILTER_OP_LSHIFT): |
| 324 | OP(FILTER_OP_BIN_AND): |
| 325 | OP(FILTER_OP_BIN_OR): |
| 326 | OP(FILTER_OP_BIN_XOR): |
| 327 | ERR("unsupported bytecode op %u\n", |
| 328 | (unsigned int) *(filter_opcode_t *) pc); |
| 329 | ret = -EINVAL; |
| 330 | goto end; |
| 331 | |
| 332 | OP(FILTER_OP_EQ): |
| 333 | { |
| 334 | /* Dynamic typing. */ |
| 335 | switch (estack_ax_t) { |
| 336 | case REG_S64: |
| 337 | switch (estack_bx_t) { |
| 338 | case REG_S64: |
| 339 | JUMP_TO(FILTER_OP_EQ_S64); |
| 340 | case REG_DOUBLE: |
| 341 | JUMP_TO(FILTER_OP_EQ_DOUBLE_S64); |
| 342 | case REG_STRING: |
| 343 | ret = -EINVAL; |
| 344 | goto end; |
| 345 | default: |
| 346 | ERR("Unknown filter register type (%d)", |
| 347 | (int) estack_bx_t); |
| 348 | ret = -EINVAL; |
| 349 | goto end; |
| 350 | } |
| 351 | break; |
| 352 | case REG_DOUBLE: |
| 353 | switch (estack_bx_t) { |
| 354 | case REG_S64: |
| 355 | JUMP_TO(FILTER_OP_EQ_S64_DOUBLE); |
| 356 | case REG_DOUBLE: |
| 357 | JUMP_TO(FILTER_OP_EQ_DOUBLE); |
| 358 | case REG_STRING: |
| 359 | ret = -EINVAL; |
| 360 | goto end; |
| 361 | default: |
| 362 | ERR("Unknown filter register type (%d)", |
| 363 | (int) estack_bx_t); |
| 364 | ret = -EINVAL; |
| 365 | goto end; |
| 366 | } |
| 367 | break; |
| 368 | case REG_STRING: |
| 369 | switch (estack_bx_t) { |
| 370 | case REG_S64: /* Fall-through */ |
| 371 | case REG_DOUBLE: |
| 372 | ret = -EINVAL; |
| 373 | goto end; |
| 374 | case REG_STRING: |
| 375 | JUMP_TO(FILTER_OP_EQ_STRING); |
| 376 | default: |
| 377 | ERR("Unknown filter register type (%d)", |
| 378 | (int) estack_bx_t); |
| 379 | ret = -EINVAL; |
| 380 | goto end; |
| 381 | } |
| 382 | break; |
| 383 | default: |
| 384 | ERR("Unknown filter register type (%d)", |
| 385 | (int) estack_ax_t); |
| 386 | ret = -EINVAL; |
| 387 | goto end; |
| 388 | } |
| 389 | } |
| 390 | OP(FILTER_OP_NE): |
| 391 | { |
| 392 | /* Dynamic typing. */ |
| 393 | switch (estack_ax_t) { |
| 394 | case REG_S64: |
| 395 | switch (estack_bx_t) { |
| 396 | case REG_S64: |
| 397 | JUMP_TO(FILTER_OP_NE_S64); |
| 398 | case REG_DOUBLE: |
| 399 | JUMP_TO(FILTER_OP_NE_DOUBLE_S64); |
| 400 | case REG_STRING: |
| 401 | ret = -EINVAL; |
| 402 | goto end; |
| 403 | default: |
| 404 | ERR("Unknown filter register type (%d)", |
| 405 | (int) estack_bx_t); |
| 406 | ret = -EINVAL; |
| 407 | goto end; |
| 408 | } |
| 409 | break; |
| 410 | case REG_DOUBLE: |
| 411 | switch (estack_bx_t) { |
| 412 | case REG_S64: |
| 413 | JUMP_TO(FILTER_OP_NE_S64_DOUBLE); |
| 414 | case REG_DOUBLE: |
| 415 | JUMP_TO(FILTER_OP_NE_DOUBLE); |
| 416 | case REG_STRING: |
| 417 | ret = -EINVAL; |
| 418 | goto end; |
| 419 | default: |
| 420 | ERR("Unknown filter register type (%d)", |
| 421 | (int) estack_bx_t); |
| 422 | ret = -EINVAL; |
| 423 | goto end; |
| 424 | } |
| 425 | break; |
| 426 | case REG_STRING: |
| 427 | switch (estack_bx_t) { |
| 428 | case REG_S64: /* Fall-through */ |
| 429 | case REG_DOUBLE: |
| 430 | ret = -EINVAL; |
| 431 | goto end; |
| 432 | case REG_STRING: |
| 433 | JUMP_TO(FILTER_OP_NE_STRING); |
| 434 | default: |
| 435 | ERR("Unknown filter register type (%d)", |
| 436 | (int) estack_bx_t); |
| 437 | ret = -EINVAL; |
| 438 | goto end; |
| 439 | } |
| 440 | break; |
| 441 | default: |
| 442 | ERR("Unknown filter register type (%d)", |
| 443 | (int) estack_ax_t); |
| 444 | ret = -EINVAL; |
| 445 | goto end; |
| 446 | } |
| 447 | } |
| 448 | OP(FILTER_OP_GT): |
| 449 | { |
| 450 | /* Dynamic typing. */ |
| 451 | switch (estack_ax_t) { |
| 452 | case REG_S64: |
| 453 | switch (estack_bx_t) { |
| 454 | case REG_S64: |
| 455 | JUMP_TO(FILTER_OP_GT_S64); |
| 456 | case REG_DOUBLE: |
| 457 | JUMP_TO(FILTER_OP_GT_DOUBLE_S64); |
| 458 | case REG_STRING: |
| 459 | ret = -EINVAL; |
| 460 | goto end; |
| 461 | default: |
| 462 | ERR("Unknown filter register type (%d)", |
| 463 | (int) estack_bx_t); |
| 464 | ret = -EINVAL; |
| 465 | goto end; |
| 466 | } |
| 467 | break; |
| 468 | case REG_DOUBLE: |
| 469 | switch (estack_bx_t) { |
| 470 | case REG_S64: |
| 471 | JUMP_TO(FILTER_OP_GT_S64_DOUBLE); |
| 472 | case REG_DOUBLE: |
| 473 | JUMP_TO(FILTER_OP_GT_DOUBLE); |
| 474 | case REG_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_STRING: |
| 485 | switch (estack_bx_t) { |
| 486 | case REG_S64: /* Fall-through */ |
| 487 | case REG_DOUBLE: |
| 488 | ret = -EINVAL; |
| 489 | goto end; |
| 490 | case REG_STRING: |
| 491 | JUMP_TO(FILTER_OP_GT_STRING); |
| 492 | default: |
| 493 | ERR("Unknown filter register type (%d)", |
| 494 | (int) estack_bx_t); |
| 495 | ret = -EINVAL; |
| 496 | goto end; |
| 497 | } |
| 498 | break; |
| 499 | default: |
| 500 | ERR("Unknown filter register type (%d)", |
| 501 | (int) estack_ax_t); |
| 502 | ret = -EINVAL; |
| 503 | goto end; |
| 504 | } |
| 505 | } |
| 506 | OP(FILTER_OP_LT): |
| 507 | { |
| 508 | /* Dynamic typing. */ |
| 509 | switch (estack_ax_t) { |
| 510 | case REG_S64: |
| 511 | switch (estack_bx_t) { |
| 512 | case REG_S64: |
| 513 | JUMP_TO(FILTER_OP_LT_S64); |
| 514 | case REG_DOUBLE: |
| 515 | JUMP_TO(FILTER_OP_LT_DOUBLE_S64); |
| 516 | case REG_STRING: |
| 517 | ret = -EINVAL; |
| 518 | goto end; |
| 519 | default: |
| 520 | ERR("Unknown filter register type (%d)", |
| 521 | (int) estack_bx_t); |
| 522 | ret = -EINVAL; |
| 523 | goto end; |
| 524 | } |
| 525 | break; |
| 526 | case REG_DOUBLE: |
| 527 | switch (estack_bx_t) { |
| 528 | case REG_S64: |
| 529 | JUMP_TO(FILTER_OP_LT_S64_DOUBLE); |
| 530 | case REG_DOUBLE: |
| 531 | JUMP_TO(FILTER_OP_LT_DOUBLE); |
| 532 | case REG_STRING: |
| 533 | ret = -EINVAL; |
| 534 | goto end; |
| 535 | default: |
| 536 | ERR("Unknown filter register type (%d)", |
| 537 | (int) estack_bx_t); |
| 538 | ret = -EINVAL; |
| 539 | goto end; |
| 540 | } |
| 541 | break; |
| 542 | case REG_STRING: |
| 543 | switch (estack_bx_t) { |
| 544 | case REG_S64: /* Fall-through */ |
| 545 | case REG_DOUBLE: |
| 546 | ret = -EINVAL; |
| 547 | goto end; |
| 548 | case REG_STRING: |
| 549 | JUMP_TO(FILTER_OP_LT_STRING); |
| 550 | default: |
| 551 | ERR("Unknown filter register type (%d)", |
| 552 | (int) estack_bx_t); |
| 553 | ret = -EINVAL; |
| 554 | goto end; |
| 555 | } |
| 556 | break; |
| 557 | default: |
| 558 | ERR("Unknown filter register type (%d)", |
| 559 | (int) estack_ax_t); |
| 560 | ret = -EINVAL; |
| 561 | goto end; |
| 562 | } |
| 563 | } |
| 564 | OP(FILTER_OP_GE): |
| 565 | { |
| 566 | /* Dynamic typing. */ |
| 567 | switch (estack_ax_t) { |
| 568 | case REG_S64: |
| 569 | switch (estack_bx_t) { |
| 570 | case REG_S64: |
| 571 | JUMP_TO(FILTER_OP_GE_S64); |
| 572 | case REG_DOUBLE: |
| 573 | JUMP_TO(FILTER_OP_GE_DOUBLE_S64); |
| 574 | case REG_STRING: |
| 575 | ret = -EINVAL; |
| 576 | goto end; |
| 577 | default: |
| 578 | ERR("Unknown filter register type (%d)", |
| 579 | (int) estack_bx_t); |
| 580 | ret = -EINVAL; |
| 581 | goto end; |
| 582 | } |
| 583 | break; |
| 584 | case REG_DOUBLE: |
| 585 | switch (estack_bx_t) { |
| 586 | case REG_S64: |
| 587 | JUMP_TO(FILTER_OP_GE_S64_DOUBLE); |
| 588 | case REG_DOUBLE: |
| 589 | JUMP_TO(FILTER_OP_GE_DOUBLE); |
| 590 | case REG_STRING: |
| 591 | ret = -EINVAL; |
| 592 | goto end; |
| 593 | default: |
| 594 | ERR("Unknown filter register type (%d)", |
| 595 | (int) estack_bx_t); |
| 596 | ret = -EINVAL; |
| 597 | goto end; |
| 598 | } |
| 599 | break; |
| 600 | case REG_STRING: |
| 601 | switch (estack_bx_t) { |
| 602 | case REG_S64: /* Fall-through */ |
| 603 | case REG_DOUBLE: |
| 604 | ret = -EINVAL; |
| 605 | goto end; |
| 606 | case REG_STRING: |
| 607 | JUMP_TO(FILTER_OP_GE_STRING); |
| 608 | default: |
| 609 | ERR("Unknown filter register type (%d)", |
| 610 | (int) estack_bx_t); |
| 611 | ret = -EINVAL; |
| 612 | goto end; |
| 613 | } |
| 614 | break; |
| 615 | default: |
| 616 | ERR("Unknown filter register type (%d)", |
| 617 | (int) estack_ax_t); |
| 618 | ret = -EINVAL; |
| 619 | goto end; |
| 620 | } |
| 621 | } |
| 622 | OP(FILTER_OP_LE): |
| 623 | { |
| 624 | /* Dynamic typing. */ |
| 625 | switch (estack_ax_t) { |
| 626 | case REG_S64: |
| 627 | switch (estack_bx_t) { |
| 628 | case REG_S64: |
| 629 | JUMP_TO(FILTER_OP_LE_S64); |
| 630 | case REG_DOUBLE: |
| 631 | JUMP_TO(FILTER_OP_LE_DOUBLE_S64); |
| 632 | case REG_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_DOUBLE: |
| 643 | switch (estack_bx_t) { |
| 644 | case REG_S64: |
| 645 | JUMP_TO(FILTER_OP_LE_S64_DOUBLE); |
| 646 | case REG_DOUBLE: |
| 647 | JUMP_TO(FILTER_OP_LE_DOUBLE); |
| 648 | case REG_STRING: |
| 649 | ret = -EINVAL; |
| 650 | goto end; |
| 651 | default: |
| 652 | ERR("Unknown filter register type (%d)", |
| 653 | (int) estack_bx_t); |
| 654 | ret = -EINVAL; |
| 655 | goto end; |
| 656 | } |
| 657 | break; |
| 658 | case REG_STRING: |
| 659 | switch (estack_bx_t) { |
| 660 | case REG_S64: /* Fall-through */ |
| 661 | case REG_DOUBLE: |
| 662 | ret = -EINVAL; |
| 663 | goto end; |
| 664 | case REG_STRING: |
| 665 | JUMP_TO(FILTER_OP_LE_STRING); |
| 666 | default: |
| 667 | ERR("Unknown filter register type (%d)", |
| 668 | (int) estack_bx_t); |
| 669 | ret = -EINVAL; |
| 670 | goto end; |
| 671 | } |
| 672 | break; |
| 673 | default: |
| 674 | ERR("Unknown filter register type (%d)", |
| 675 | (int) estack_ax_t); |
| 676 | ret = -EINVAL; |
| 677 | goto end; |
| 678 | } |
| 679 | } |
| 680 | |
| 681 | OP(FILTER_OP_EQ_STRING): |
| 682 | { |
| 683 | int res; |
| 684 | |
| 685 | res = (stack_strcmp(stack, top, "==") == 0); |
| 686 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 687 | estack_ax_v = res; |
| 688 | estack_ax_t = REG_S64; |
| 689 | next_pc += sizeof(struct binary_op); |
| 690 | PO; |
| 691 | } |
| 692 | OP(FILTER_OP_NE_STRING): |
| 693 | { |
| 694 | int res; |
| 695 | |
| 696 | res = (stack_strcmp(stack, top, "!=") != 0); |
| 697 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 698 | estack_ax_v = res; |
| 699 | estack_ax_t = REG_S64; |
| 700 | next_pc += sizeof(struct binary_op); |
| 701 | PO; |
| 702 | } |
| 703 | OP(FILTER_OP_GT_STRING): |
| 704 | { |
| 705 | int res; |
| 706 | |
| 707 | res = (stack_strcmp(stack, top, ">") > 0); |
| 708 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 709 | estack_ax_v = res; |
| 710 | estack_ax_t = REG_S64; |
| 711 | next_pc += sizeof(struct binary_op); |
| 712 | PO; |
| 713 | } |
| 714 | OP(FILTER_OP_LT_STRING): |
| 715 | { |
| 716 | int res; |
| 717 | |
| 718 | res = (stack_strcmp(stack, top, "<") < 0); |
| 719 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 720 | estack_ax_v = res; |
| 721 | estack_ax_t = REG_S64; |
| 722 | next_pc += sizeof(struct binary_op); |
| 723 | PO; |
| 724 | } |
| 725 | OP(FILTER_OP_GE_STRING): |
| 726 | { |
| 727 | int res; |
| 728 | |
| 729 | res = (stack_strcmp(stack, top, ">=") >= 0); |
| 730 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 731 | estack_ax_v = res; |
| 732 | estack_ax_t = REG_S64; |
| 733 | next_pc += sizeof(struct binary_op); |
| 734 | PO; |
| 735 | } |
| 736 | OP(FILTER_OP_LE_STRING): |
| 737 | { |
| 738 | int res; |
| 739 | |
| 740 | res = (stack_strcmp(stack, top, "<=") <= 0); |
| 741 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 742 | estack_ax_v = res; |
| 743 | estack_ax_t = REG_S64; |
| 744 | next_pc += sizeof(struct binary_op); |
| 745 | PO; |
| 746 | } |
| 747 | |
| 748 | OP(FILTER_OP_EQ_S64): |
| 749 | { |
| 750 | int res; |
| 751 | |
| 752 | res = (estack_bx_v == estack_ax_v); |
| 753 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 754 | estack_ax_v = res; |
| 755 | estack_ax_t = REG_S64; |
| 756 | next_pc += sizeof(struct binary_op); |
| 757 | PO; |
| 758 | } |
| 759 | OP(FILTER_OP_NE_S64): |
| 760 | { |
| 761 | int res; |
| 762 | |
| 763 | res = (estack_bx_v != estack_ax_v); |
| 764 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 765 | estack_ax_v = res; |
| 766 | estack_ax_t = REG_S64; |
| 767 | next_pc += sizeof(struct binary_op); |
| 768 | PO; |
| 769 | } |
| 770 | OP(FILTER_OP_GT_S64): |
| 771 | { |
| 772 | int res; |
| 773 | |
| 774 | res = (estack_bx_v > estack_ax_v); |
| 775 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 776 | estack_ax_v = res; |
| 777 | estack_ax_t = REG_S64; |
| 778 | next_pc += sizeof(struct binary_op); |
| 779 | PO; |
| 780 | } |
| 781 | OP(FILTER_OP_LT_S64): |
| 782 | { |
| 783 | int res; |
| 784 | |
| 785 | res = (estack_bx_v < estack_ax_v); |
| 786 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 787 | estack_ax_v = res; |
| 788 | estack_ax_t = REG_S64; |
| 789 | next_pc += sizeof(struct binary_op); |
| 790 | PO; |
| 791 | } |
| 792 | OP(FILTER_OP_GE_S64): |
| 793 | { |
| 794 | int res; |
| 795 | |
| 796 | res = (estack_bx_v >= estack_ax_v); |
| 797 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 798 | estack_ax_v = res; |
| 799 | estack_ax_t = REG_S64; |
| 800 | next_pc += sizeof(struct binary_op); |
| 801 | PO; |
| 802 | } |
| 803 | OP(FILTER_OP_LE_S64): |
| 804 | { |
| 805 | int res; |
| 806 | |
| 807 | res = (estack_bx_v <= estack_ax_v); |
| 808 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 809 | estack_ax_v = res; |
| 810 | estack_ax_t = REG_S64; |
| 811 | next_pc += sizeof(struct binary_op); |
| 812 | PO; |
| 813 | } |
| 814 | |
| 815 | OP(FILTER_OP_EQ_DOUBLE): |
| 816 | { |
| 817 | int res; |
| 818 | |
| 819 | res = (estack_bx(stack, top)->u.d == estack_ax(stack, top)->u.d); |
| 820 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 821 | estack_ax_v = res; |
| 822 | estack_ax_t = REG_S64; |
| 823 | next_pc += sizeof(struct binary_op); |
| 824 | PO; |
| 825 | } |
| 826 | OP(FILTER_OP_NE_DOUBLE): |
| 827 | { |
| 828 | int res; |
| 829 | |
| 830 | res = (estack_bx(stack, top)->u.d != estack_ax(stack, top)->u.d); |
| 831 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 832 | estack_ax_v = res; |
| 833 | estack_ax_t = REG_S64; |
| 834 | next_pc += sizeof(struct binary_op); |
| 835 | PO; |
| 836 | } |
| 837 | OP(FILTER_OP_GT_DOUBLE): |
| 838 | { |
| 839 | int res; |
| 840 | |
| 841 | res = (estack_bx(stack, top)->u.d > estack_ax(stack, top)->u.d); |
| 842 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 843 | estack_ax_v = res; |
| 844 | estack_ax_t = REG_S64; |
| 845 | next_pc += sizeof(struct binary_op); |
| 846 | PO; |
| 847 | } |
| 848 | OP(FILTER_OP_LT_DOUBLE): |
| 849 | { |
| 850 | int res; |
| 851 | |
| 852 | res = (estack_bx(stack, top)->u.d < estack_ax(stack, top)->u.d); |
| 853 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 854 | estack_ax_v = res; |
| 855 | estack_ax_t = REG_S64; |
| 856 | next_pc += sizeof(struct binary_op); |
| 857 | PO; |
| 858 | } |
| 859 | OP(FILTER_OP_GE_DOUBLE): |
| 860 | { |
| 861 | int res; |
| 862 | |
| 863 | res = (estack_bx(stack, top)->u.d >= estack_ax(stack, top)->u.d); |
| 864 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 865 | estack_ax_v = res; |
| 866 | estack_ax_t = REG_S64; |
| 867 | next_pc += sizeof(struct binary_op); |
| 868 | PO; |
| 869 | } |
| 870 | OP(FILTER_OP_LE_DOUBLE): |
| 871 | { |
| 872 | int res; |
| 873 | |
| 874 | res = (estack_bx(stack, top)->u.d <= estack_ax(stack, top)->u.d); |
| 875 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 876 | estack_ax_v = res; |
| 877 | estack_ax_t = REG_S64; |
| 878 | next_pc += sizeof(struct binary_op); |
| 879 | PO; |
| 880 | } |
| 881 | |
| 882 | /* Mixed S64-double binary comparators */ |
| 883 | OP(FILTER_OP_EQ_DOUBLE_S64): |
| 884 | { |
| 885 | int res; |
| 886 | |
| 887 | res = (estack_bx(stack, top)->u.d == estack_ax_v); |
| 888 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 889 | estack_ax_v = res; |
| 890 | estack_ax_t = REG_S64; |
| 891 | next_pc += sizeof(struct binary_op); |
| 892 | PO; |
| 893 | } |
| 894 | OP(FILTER_OP_NE_DOUBLE_S64): |
| 895 | { |
| 896 | int res; |
| 897 | |
| 898 | res = (estack_bx(stack, top)->u.d != estack_ax_v); |
| 899 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 900 | estack_ax_v = res; |
| 901 | estack_ax_t = REG_S64; |
| 902 | next_pc += sizeof(struct binary_op); |
| 903 | PO; |
| 904 | } |
| 905 | OP(FILTER_OP_GT_DOUBLE_S64): |
| 906 | { |
| 907 | int res; |
| 908 | |
| 909 | res = (estack_bx(stack, top)->u.d > estack_ax_v); |
| 910 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 911 | estack_ax_v = res; |
| 912 | estack_ax_t = REG_S64; |
| 913 | next_pc += sizeof(struct binary_op); |
| 914 | PO; |
| 915 | } |
| 916 | OP(FILTER_OP_LT_DOUBLE_S64): |
| 917 | { |
| 918 | int res; |
| 919 | |
| 920 | res = (estack_bx(stack, top)->u.d < estack_ax_v); |
| 921 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 922 | estack_ax_v = res; |
| 923 | estack_ax_t = REG_S64; |
| 924 | next_pc += sizeof(struct binary_op); |
| 925 | PO; |
| 926 | } |
| 927 | OP(FILTER_OP_GE_DOUBLE_S64): |
| 928 | { |
| 929 | int res; |
| 930 | |
| 931 | res = (estack_bx(stack, top)->u.d >= estack_ax_v); |
| 932 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 933 | estack_ax_v = res; |
| 934 | estack_ax_t = REG_S64; |
| 935 | next_pc += sizeof(struct binary_op); |
| 936 | PO; |
| 937 | } |
| 938 | OP(FILTER_OP_LE_DOUBLE_S64): |
| 939 | { |
| 940 | int res; |
| 941 | |
| 942 | res = (estack_bx(stack, top)->u.d <= estack_ax_v); |
| 943 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 944 | estack_ax_v = res; |
| 945 | estack_ax_t = REG_S64; |
| 946 | next_pc += sizeof(struct binary_op); |
| 947 | PO; |
| 948 | } |
| 949 | |
| 950 | OP(FILTER_OP_EQ_S64_DOUBLE): |
| 951 | { |
| 952 | int res; |
| 953 | |
| 954 | res = (estack_bx_v == estack_ax(stack, top)->u.d); |
| 955 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 956 | estack_ax_v = res; |
| 957 | estack_ax_t = REG_S64; |
| 958 | next_pc += sizeof(struct binary_op); |
| 959 | PO; |
| 960 | } |
| 961 | OP(FILTER_OP_NE_S64_DOUBLE): |
| 962 | { |
| 963 | int res; |
| 964 | |
| 965 | res = (estack_bx_v != estack_ax(stack, top)->u.d); |
| 966 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 967 | estack_ax_v = res; |
| 968 | estack_ax_t = REG_S64; |
| 969 | next_pc += sizeof(struct binary_op); |
| 970 | PO; |
| 971 | } |
| 972 | OP(FILTER_OP_GT_S64_DOUBLE): |
| 973 | { |
| 974 | int res; |
| 975 | |
| 976 | res = (estack_bx_v > estack_ax(stack, top)->u.d); |
| 977 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 978 | estack_ax_v = res; |
| 979 | estack_ax_t = REG_S64; |
| 980 | next_pc += sizeof(struct binary_op); |
| 981 | PO; |
| 982 | } |
| 983 | OP(FILTER_OP_LT_S64_DOUBLE): |
| 984 | { |
| 985 | int res; |
| 986 | |
| 987 | res = (estack_bx_v < estack_ax(stack, top)->u.d); |
| 988 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 989 | estack_ax_v = res; |
| 990 | estack_ax_t = REG_S64; |
| 991 | next_pc += sizeof(struct binary_op); |
| 992 | PO; |
| 993 | } |
| 994 | OP(FILTER_OP_GE_S64_DOUBLE): |
| 995 | { |
| 996 | int res; |
| 997 | |
| 998 | res = (estack_bx_v >= estack_ax(stack, top)->u.d); |
| 999 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1000 | estack_ax_v = res; |
| 1001 | estack_ax_t = REG_S64; |
| 1002 | next_pc += sizeof(struct binary_op); |
| 1003 | PO; |
| 1004 | } |
| 1005 | OP(FILTER_OP_LE_S64_DOUBLE): |
| 1006 | { |
| 1007 | int res; |
| 1008 | |
| 1009 | res = (estack_bx_v <= estack_ax(stack, top)->u.d); |
| 1010 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1011 | estack_ax_v = res; |
| 1012 | estack_ax_t = REG_S64; |
| 1013 | next_pc += sizeof(struct binary_op); |
| 1014 | PO; |
| 1015 | } |
| 1016 | |
| 1017 | /* unary */ |
| 1018 | OP(FILTER_OP_UNARY_PLUS): |
| 1019 | { |
| 1020 | /* Dynamic typing. */ |
| 1021 | switch (estack_ax_t) { |
| 1022 | case REG_S64: /* Fall-through. */ |
| 1023 | JUMP_TO(FILTER_OP_UNARY_PLUS_S64); |
| 1024 | case REG_DOUBLE: |
| 1025 | JUMP_TO(FILTER_OP_UNARY_PLUS_DOUBLE); |
| 1026 | case REG_STRING: |
| 1027 | ret = -EINVAL; |
| 1028 | goto end; |
| 1029 | default: |
| 1030 | ERR("Unknown filter register type (%d)", |
| 1031 | (int) estack_ax_t); |
| 1032 | ret = -EINVAL; |
| 1033 | goto end; |
| 1034 | } |
| 1035 | } |
| 1036 | OP(FILTER_OP_UNARY_MINUS): |
| 1037 | { |
| 1038 | /* Dynamic typing. */ |
| 1039 | switch (estack_ax_t) { |
| 1040 | case REG_S64: |
| 1041 | JUMP_TO(FILTER_OP_UNARY_MINUS_S64); |
| 1042 | case REG_DOUBLE: |
| 1043 | JUMP_TO(FILTER_OP_UNARY_MINUS_DOUBLE); |
| 1044 | case REG_STRING: |
| 1045 | ret = -EINVAL; |
| 1046 | goto end; |
| 1047 | default: |
| 1048 | ERR("Unknown filter register type (%d)", |
| 1049 | (int) estack_ax_t); |
| 1050 | ret = -EINVAL; |
| 1051 | goto end; |
| 1052 | } |
| 1053 | } |
| 1054 | OP(FILTER_OP_UNARY_NOT): |
| 1055 | { |
| 1056 | /* Dynamic typing. */ |
| 1057 | switch (estack_ax_t) { |
| 1058 | case REG_S64: |
| 1059 | JUMP_TO(FILTER_OP_UNARY_NOT_S64); |
| 1060 | case REG_DOUBLE: |
| 1061 | JUMP_TO(FILTER_OP_UNARY_NOT_DOUBLE); |
| 1062 | case REG_STRING: |
| 1063 | ret = -EINVAL; |
| 1064 | goto end; |
| 1065 | default: |
| 1066 | ERR("Unknown filter register type (%d)", |
| 1067 | (int) estack_ax_t); |
| 1068 | ret = -EINVAL; |
| 1069 | goto end; |
| 1070 | } |
| 1071 | next_pc += sizeof(struct unary_op); |
| 1072 | PO; |
| 1073 | } |
| 1074 | |
| 1075 | OP(FILTER_OP_UNARY_PLUS_S64): |
| 1076 | OP(FILTER_OP_UNARY_PLUS_DOUBLE): |
| 1077 | { |
| 1078 | next_pc += sizeof(struct unary_op); |
| 1079 | PO; |
| 1080 | } |
| 1081 | OP(FILTER_OP_UNARY_MINUS_S64): |
| 1082 | { |
| 1083 | estack_ax_v = -estack_ax_v; |
| 1084 | next_pc += sizeof(struct unary_op); |
| 1085 | PO; |
| 1086 | } |
| 1087 | OP(FILTER_OP_UNARY_MINUS_DOUBLE): |
| 1088 | { |
| 1089 | estack_ax(stack, top)->u.d = -estack_ax(stack, top)->u.d; |
| 1090 | next_pc += sizeof(struct unary_op); |
| 1091 | PO; |
| 1092 | } |
| 1093 | OP(FILTER_OP_UNARY_NOT_S64): |
| 1094 | { |
| 1095 | estack_ax_v = !estack_ax_v; |
| 1096 | next_pc += sizeof(struct unary_op); |
| 1097 | PO; |
| 1098 | } |
| 1099 | OP(FILTER_OP_UNARY_NOT_DOUBLE): |
| 1100 | { |
| 1101 | estack_ax_v = !estack_ax(stack, top)->u.d; |
| 1102 | estack_ax_t = REG_S64; |
| 1103 | next_pc += sizeof(struct unary_op); |
| 1104 | PO; |
| 1105 | } |
| 1106 | |
| 1107 | /* logical */ |
| 1108 | OP(FILTER_OP_AND): |
| 1109 | { |
| 1110 | struct logical_op *insn = (struct logical_op *) pc; |
| 1111 | |
| 1112 | if (estack_ax_t != REG_S64) { |
| 1113 | ret = -EINVAL; |
| 1114 | goto end; |
| 1115 | } |
| 1116 | /* If AX is 0, skip and evaluate to 0 */ |
| 1117 | if (unlikely(estack_ax_v == 0)) { |
| 1118 | dbg_printf("Jumping to bytecode offset %u\n", |
| 1119 | (unsigned int) insn->skip_offset); |
| 1120 | next_pc = start_pc + insn->skip_offset; |
| 1121 | } else { |
| 1122 | /* Pop 1 when jump not taken */ |
| 1123 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1124 | next_pc += sizeof(struct logical_op); |
| 1125 | } |
| 1126 | PO; |
| 1127 | } |
| 1128 | OP(FILTER_OP_OR): |
| 1129 | { |
| 1130 | struct logical_op *insn = (struct logical_op *) pc; |
| 1131 | |
| 1132 | if (estack_ax_t != REG_S64) { |
| 1133 | ret = -EINVAL; |
| 1134 | goto end; |
| 1135 | } |
| 1136 | /* If AX is nonzero, skip and evaluate to 1 */ |
| 1137 | if (unlikely(estack_ax_v != 0)) { |
| 1138 | estack_ax_v = 1; |
| 1139 | dbg_printf("Jumping to bytecode offset %u\n", |
| 1140 | (unsigned int) insn->skip_offset); |
| 1141 | next_pc = start_pc + insn->skip_offset; |
| 1142 | } else { |
| 1143 | /* Pop 1 when jump not taken */ |
| 1144 | estack_pop(stack, top, ax, bx, ax_t, bx_t); |
| 1145 | next_pc += sizeof(struct logical_op); |
| 1146 | } |
| 1147 | PO; |
| 1148 | } |
| 1149 | |
| 1150 | |
| 1151 | /* load field ref */ |
| 1152 | OP(FILTER_OP_LOAD_FIELD_REF_STRING): |
| 1153 | { |
| 1154 | struct load_op *insn = (struct load_op *) pc; |
| 1155 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1156 | |
| 1157 | dbg_printf("load field ref offset %u type string\n", |
| 1158 | ref->offset); |
| 1159 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1160 | estack_ax(stack, top)->u.s.str = |
| 1161 | *(const char * const *) &filter_stack_data[ref->offset]; |
| 1162 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
| 1163 | dbg_printf("Filter warning: loading a NULL string.\n"); |
| 1164 | ret = -EINVAL; |
| 1165 | goto end; |
| 1166 | } |
| 1167 | estack_ax(stack, top)->u.s.seq_len = UINT_MAX; |
| 1168 | estack_ax(stack, top)->u.s.literal = 0; |
| 1169 | estack_ax_t = REG_STRING; |
| 1170 | dbg_printf("ref load string %s\n", estack_ax(stack, top)->u.s.str); |
| 1171 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1172 | PO; |
| 1173 | } |
| 1174 | |
| 1175 | OP(FILTER_OP_LOAD_FIELD_REF_SEQUENCE): |
| 1176 | { |
| 1177 | struct load_op *insn = (struct load_op *) pc; |
| 1178 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1179 | |
| 1180 | dbg_printf("load field ref offset %u type sequence\n", |
| 1181 | ref->offset); |
| 1182 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1183 | estack_ax(stack, top)->u.s.seq_len = |
| 1184 | *(unsigned long *) &filter_stack_data[ref->offset]; |
| 1185 | estack_ax(stack, top)->u.s.str = |
| 1186 | *(const char **) (&filter_stack_data[ref->offset |
| 1187 | + sizeof(unsigned long)]); |
| 1188 | estack_ax_t = REG_STRING; |
| 1189 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
| 1190 | dbg_printf("Filter warning: loading a NULL sequence.\n"); |
| 1191 | ret = -EINVAL; |
| 1192 | goto end; |
| 1193 | } |
| 1194 | estack_ax(stack, top)->u.s.literal = 0; |
| 1195 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1196 | PO; |
| 1197 | } |
| 1198 | |
| 1199 | OP(FILTER_OP_LOAD_FIELD_REF_S64): |
| 1200 | { |
| 1201 | struct load_op *insn = (struct load_op *) pc; |
| 1202 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1203 | |
| 1204 | dbg_printf("load field ref offset %u type s64\n", |
| 1205 | ref->offset); |
| 1206 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1207 | estack_ax_v = |
| 1208 | ((struct literal_numeric *) &filter_stack_data[ref->offset])->v; |
| 1209 | estack_ax_t = REG_S64; |
| 1210 | dbg_printf("ref load s64 %" PRIi64 "\n", estack_ax_v); |
| 1211 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1212 | PO; |
| 1213 | } |
| 1214 | |
| 1215 | OP(FILTER_OP_LOAD_FIELD_REF_DOUBLE): |
| 1216 | { |
| 1217 | struct load_op *insn = (struct load_op *) pc; |
| 1218 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1219 | |
| 1220 | dbg_printf("load field ref offset %u type double\n", |
| 1221 | ref->offset); |
| 1222 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1223 | memcpy(&estack_ax(stack, top)->u.d, &filter_stack_data[ref->offset], |
| 1224 | sizeof(struct literal_double)); |
| 1225 | estack_ax_t = REG_DOUBLE; |
| 1226 | dbg_printf("ref load double %g\n", estack_ax(stack, top)->u.d); |
| 1227 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1228 | PO; |
| 1229 | } |
| 1230 | |
| 1231 | /* load from immediate operand */ |
| 1232 | OP(FILTER_OP_LOAD_STRING): |
| 1233 | { |
| 1234 | struct load_op *insn = (struct load_op *) pc; |
| 1235 | |
| 1236 | dbg_printf("load string %s\n", insn->data); |
| 1237 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1238 | estack_ax(stack, top)->u.s.str = insn->data; |
| 1239 | estack_ax(stack, top)->u.s.seq_len = UINT_MAX; |
| 1240 | estack_ax(stack, top)->u.s.literal = 1; |
| 1241 | estack_ax_t = REG_STRING; |
| 1242 | next_pc += sizeof(struct load_op) + strlen(insn->data) + 1; |
| 1243 | PO; |
| 1244 | } |
| 1245 | |
| 1246 | OP(FILTER_OP_LOAD_S64): |
| 1247 | { |
| 1248 | struct load_op *insn = (struct load_op *) pc; |
| 1249 | |
| 1250 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1251 | estack_ax_v = ((struct literal_numeric *) insn->data)->v; |
| 1252 | estack_ax_t = REG_S64; |
| 1253 | dbg_printf("load s64 %" PRIi64 "\n", estack_ax_v); |
| 1254 | next_pc += sizeof(struct load_op) |
| 1255 | + sizeof(struct literal_numeric); |
| 1256 | PO; |
| 1257 | } |
| 1258 | |
| 1259 | OP(FILTER_OP_LOAD_DOUBLE): |
| 1260 | { |
| 1261 | struct load_op *insn = (struct load_op *) pc; |
| 1262 | |
| 1263 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1264 | memcpy(&estack_ax(stack, top)->u.d, insn->data, |
| 1265 | sizeof(struct literal_double)); |
| 1266 | estack_ax_t = REG_DOUBLE; |
| 1267 | dbg_printf("load double %g\n", estack_ax(stack, top)->u.d); |
| 1268 | next_pc += sizeof(struct load_op) |
| 1269 | + sizeof(struct literal_double); |
| 1270 | PO; |
| 1271 | } |
| 1272 | |
| 1273 | /* cast */ |
| 1274 | OP(FILTER_OP_CAST_TO_S64): |
| 1275 | { |
| 1276 | /* Dynamic typing. */ |
| 1277 | switch (estack_ax_t) { |
| 1278 | case REG_S64: |
| 1279 | JUMP_TO(FILTER_OP_CAST_NOP); |
| 1280 | case REG_DOUBLE: |
| 1281 | JUMP_TO(FILTER_OP_CAST_DOUBLE_TO_S64); |
| 1282 | case REG_STRING: |
| 1283 | ret = -EINVAL; |
| 1284 | goto end; |
| 1285 | default: |
| 1286 | ERR("Unknown filter register type (%d)", |
| 1287 | (int) estack_ax_t); |
| 1288 | ret = -EINVAL; |
| 1289 | goto end; |
| 1290 | } |
| 1291 | } |
| 1292 | |
| 1293 | OP(FILTER_OP_CAST_DOUBLE_TO_S64): |
| 1294 | { |
| 1295 | estack_ax_v = (int64_t) estack_ax(stack, top)->u.d; |
| 1296 | estack_ax_t = REG_S64; |
| 1297 | next_pc += sizeof(struct cast_op); |
| 1298 | PO; |
| 1299 | } |
| 1300 | |
| 1301 | OP(FILTER_OP_CAST_NOP): |
| 1302 | { |
| 1303 | next_pc += sizeof(struct cast_op); |
| 1304 | PO; |
| 1305 | } |
| 1306 | |
| 1307 | /* get context ref */ |
| 1308 | OP(FILTER_OP_GET_CONTEXT_REF): |
| 1309 | { |
| 1310 | struct load_op *insn = (struct load_op *) pc; |
| 1311 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1312 | struct lttng_ctx *ctx; |
| 1313 | struct lttng_ctx_field *ctx_field; |
| 1314 | struct lttng_ctx_value v; |
| 1315 | |
| 1316 | dbg_printf("get context ref offset %u type dynamic\n", |
| 1317 | ref->offset); |
| 1318 | ctx = rcu_dereference(session->ctx); |
| 1319 | ctx_field = &ctx->fields[ref->offset]; |
| 1320 | ctx_field->get_value(ctx_field, &v); |
| 1321 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1322 | switch (v.sel) { |
| 1323 | case LTTNG_UST_DYNAMIC_TYPE_NONE: |
| 1324 | ret = -EINVAL; |
| 1325 | goto end; |
| 1326 | case LTTNG_UST_DYNAMIC_TYPE_S64: |
| 1327 | estack_ax_v = v.u.s64; |
| 1328 | estack_ax_t = REG_S64; |
| 1329 | dbg_printf("ref get context dynamic s64 %" PRIi64 "\n", estack_ax_v); |
| 1330 | break; |
| 1331 | case LTTNG_UST_DYNAMIC_TYPE_DOUBLE: |
| 1332 | estack_ax(stack, top)->u.d = v.u.d; |
| 1333 | estack_ax_t = REG_DOUBLE; |
| 1334 | dbg_printf("ref get context dynamic double %g\n", estack_ax(stack, top)->u.d); |
| 1335 | break; |
| 1336 | case LTTNG_UST_DYNAMIC_TYPE_STRING: |
| 1337 | estack_ax(stack, top)->u.s.str = v.u.str; |
| 1338 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
| 1339 | dbg_printf("Filter warning: loading a NULL string.\n"); |
| 1340 | ret = -EINVAL; |
| 1341 | goto end; |
| 1342 | } |
| 1343 | estack_ax(stack, top)->u.s.seq_len = UINT_MAX; |
| 1344 | estack_ax(stack, top)->u.s.literal = 0; |
| 1345 | dbg_printf("ref get context dynamic string %s\n", estack_ax(stack, top)->u.s.str); |
| 1346 | estack_ax_t = REG_STRING; |
| 1347 | break; |
| 1348 | default: |
| 1349 | dbg_printf("Filter warning: unknown dynamic type (%d).\n", (int) v.sel); |
| 1350 | ret = -EINVAL; |
| 1351 | goto end; |
| 1352 | } |
| 1353 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1354 | PO; |
| 1355 | } |
| 1356 | |
| 1357 | OP(FILTER_OP_GET_CONTEXT_REF_STRING): |
| 1358 | { |
| 1359 | struct load_op *insn = (struct load_op *) pc; |
| 1360 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1361 | struct lttng_ctx *ctx; |
| 1362 | struct lttng_ctx_field *ctx_field; |
| 1363 | struct lttng_ctx_value v; |
| 1364 | |
| 1365 | dbg_printf("get context ref offset %u type string\n", |
| 1366 | ref->offset); |
| 1367 | ctx = rcu_dereference(session->ctx); |
| 1368 | ctx_field = &ctx->fields[ref->offset]; |
| 1369 | ctx_field->get_value(ctx_field, &v); |
| 1370 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1371 | estack_ax(stack, top)->u.s.str = v.u.str; |
| 1372 | if (unlikely(!estack_ax(stack, top)->u.s.str)) { |
| 1373 | dbg_printf("Filter warning: loading a NULL string.\n"); |
| 1374 | ret = -EINVAL; |
| 1375 | goto end; |
| 1376 | } |
| 1377 | estack_ax(stack, top)->u.s.seq_len = UINT_MAX; |
| 1378 | estack_ax(stack, top)->u.s.literal = 0; |
| 1379 | estack_ax_t = REG_STRING; |
| 1380 | dbg_printf("ref get context string %s\n", estack_ax(stack, top)->u.s.str); |
| 1381 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1382 | PO; |
| 1383 | } |
| 1384 | |
| 1385 | OP(FILTER_OP_GET_CONTEXT_REF_S64): |
| 1386 | { |
| 1387 | struct load_op *insn = (struct load_op *) pc; |
| 1388 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1389 | struct lttng_ctx *ctx; |
| 1390 | struct lttng_ctx_field *ctx_field; |
| 1391 | struct lttng_ctx_value v; |
| 1392 | |
| 1393 | dbg_printf("get context ref offset %u type s64\n", |
| 1394 | ref->offset); |
| 1395 | ctx = rcu_dereference(session->ctx); |
| 1396 | ctx_field = &ctx->fields[ref->offset]; |
| 1397 | ctx_field->get_value(ctx_field, &v); |
| 1398 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1399 | estack_ax_v = v.u.s64; |
| 1400 | estack_ax_t = REG_S64; |
| 1401 | dbg_printf("ref get context s64 %" PRIi64 "\n", estack_ax_v); |
| 1402 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1403 | PO; |
| 1404 | } |
| 1405 | |
| 1406 | OP(FILTER_OP_GET_CONTEXT_REF_DOUBLE): |
| 1407 | { |
| 1408 | struct load_op *insn = (struct load_op *) pc; |
| 1409 | struct field_ref *ref = (struct field_ref *) insn->data; |
| 1410 | struct lttng_ctx *ctx; |
| 1411 | struct lttng_ctx_field *ctx_field; |
| 1412 | struct lttng_ctx_value v; |
| 1413 | |
| 1414 | dbg_printf("get context ref offset %u type double\n", |
| 1415 | ref->offset); |
| 1416 | ctx = rcu_dereference(session->ctx); |
| 1417 | ctx_field = &ctx->fields[ref->offset]; |
| 1418 | ctx_field->get_value(ctx_field, &v); |
| 1419 | estack_push(stack, top, ax, bx, ax_t, bx_t); |
| 1420 | memcpy(&estack_ax(stack, top)->u.d, &v.u.d, sizeof(struct literal_double)); |
| 1421 | estack_ax_t = REG_DOUBLE; |
| 1422 | dbg_printf("ref get context double %g\n", estack_ax(stack, top)->u.d); |
| 1423 | next_pc += sizeof(struct load_op) + sizeof(struct field_ref); |
| 1424 | PO; |
| 1425 | } |
| 1426 | |
| 1427 | END_OP |
| 1428 | end: |
| 1429 | /* return 0 (discard) on error */ |
| 1430 | if (ret) |
| 1431 | return 0; |
| 1432 | return retval; |
| 1433 | } |
| 1434 | |
| 1435 | #undef START_OP |
| 1436 | #undef OP |
| 1437 | #undef PO |
| 1438 | #undef END_OP |