projects / lttng-tools.git / blame
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| 953192ba MD |
1 | #ifndef _FILTER_BYTECODE_H |
| 2 | #define _FILTER_BYTECODE_H | |
| 3 | ||
| 4 | /* | |
| 5 | * filter-bytecode.h | |
| 6 | * | |
| 7 | * LTTng filter bytecode | |
| 8 | * | |
| 9 | * Copyright 2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 10 | * | |
| 11 | * This library is free software; you can redistribute it and/or modify it | |
| 12 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
| 13 | * as published by the Free Software Foundation. | |
| 14 | * | |
| 15 | * This library is distributed in the hope that it will be useful, | |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 18 | * Lesser General Public License for more details. | |
| 19 | * | |
| 20 | * You should have received a copy of the GNU Lesser General Public License | |
| 21 | * along with this library; if not, write to the Free Software Foundation, | |
| 22 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 23 | */ | |
| 24 | ||
| 25 | #include "filter-ast.h" | |
| 53a80697 | 26 | #include "../../common/sessiond-comm/sessiond-comm.h" |
| 953192ba MD |
27 | |
| 28 | /* | |
| 29 | * offsets are absolute from start of bytecode. | |
| 30 | */ | |
| 31 | ||
| 32 | enum filter_register { | |
| 33 | REG_R0 = 0, | |
| 34 | REG_R1 = 1, | |
| 35 | REG_ERROR, | |
| 36 | }; | |
| 37 | ||
| 953192ba MD |
38 | struct field_ref { |
| 39 | /* Initially, symbol offset. After link, field offset. */ | |
| 40 | uint16_t offset; | |
| 953192ba MD |
41 | } __attribute__((packed)); |
| 42 | ||
| 43 | struct literal_numeric { | |
| 44 | int64_t v; | |
| 45 | } __attribute__((packed)); | |
| 46 | ||
| e90d8561 MD |
47 | struct literal_double { |
| 48 | double v; | |
| 49 | } __attribute__((packed)); | |
| 50 | ||
| 953192ba MD |
51 | struct literal_string { |
| 52 | char string[0]; | |
| 53 | } __attribute__((packed)); | |
| 54 | ||
| 55 | enum filter_op { | |
| 56 | FILTER_OP_UNKNOWN = 0, | |
| 57 | ||
| 58 | FILTER_OP_RETURN, | |
| 59 | ||
| 60 | /* binary */ | |
| 61 | FILTER_OP_MUL, | |
| 62 | FILTER_OP_DIV, | |
| 63 | FILTER_OP_MOD, | |
| 64 | FILTER_OP_PLUS, | |
| 65 | FILTER_OP_MINUS, | |
| 66 | FILTER_OP_RSHIFT, | |
| 67 | FILTER_OP_LSHIFT, | |
| 68 | FILTER_OP_BIN_AND, | |
| 69 | FILTER_OP_BIN_OR, | |
| 70 | FILTER_OP_BIN_XOR, | |
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71 | |
| 72 | /* binary comparators */ | |
| 953192ba MD |
73 | FILTER_OP_EQ, |
| 74 | FILTER_OP_NE, | |
| 75 | FILTER_OP_GT, | |
| 76 | FILTER_OP_LT, | |
| 77 | FILTER_OP_GE, | |
| 78 | FILTER_OP_LE, | |
| 79 | ||
| 78228322 MD |
80 | /* string binary comparator */ |
| 81 | FILTER_OP_EQ_STRING, | |
| 82 | FILTER_OP_NE_STRING, | |
| 83 | FILTER_OP_GT_STRING, | |
| 84 | FILTER_OP_LT_STRING, | |
| 85 | FILTER_OP_GE_STRING, | |
| 86 | FILTER_OP_LE_STRING, | |
| 87 | ||
| 88 | /* s64 binary comparator */ | |
| 89 | FILTER_OP_EQ_S64, | |
| 90 | FILTER_OP_NE_S64, | |
| 91 | FILTER_OP_GT_S64, | |
| 92 | FILTER_OP_LT_S64, | |
| 93 | FILTER_OP_GE_S64, | |
| 94 | FILTER_OP_LE_S64, | |
| 95 | ||
| 96 | /* double binary comparator */ | |
| 97 | FILTER_OP_EQ_DOUBLE, | |
| 98 | FILTER_OP_NE_DOUBLE, | |
| 99 | FILTER_OP_GT_DOUBLE, | |
| 100 | FILTER_OP_LT_DOUBLE, | |
| 101 | FILTER_OP_GE_DOUBLE, | |
| 102 | FILTER_OP_LE_DOUBLE, | |
| 103 | ||
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104 | /* unary */ |
| 105 | FILTER_OP_UNARY_PLUS, | |
| 106 | FILTER_OP_UNARY_MINUS, | |
| 107 | FILTER_OP_UNARY_NOT, | |
| c473659a MD |
108 | FILTER_OP_UNARY_PLUS_S64, |
| 109 | FILTER_OP_UNARY_MINUS_S64, | |
| 110 | FILTER_OP_UNARY_NOT_S64, | |
| 111 | FILTER_OP_UNARY_PLUS_DOUBLE, | |
| 112 | FILTER_OP_UNARY_MINUS_DOUBLE, | |
| 113 | FILTER_OP_UNARY_NOT_DOUBLE, | |
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114 | |
| 115 | /* logical */ | |
| 116 | FILTER_OP_AND, | |
| 117 | FILTER_OP_OR, | |
| aa449dc5 MD |
118 | FILTER_OP_AND_S64, |
| 119 | FILTER_OP_OR_S64, | |
| 120 | FILTER_OP_AND_DOUBLE, | |
| 121 | FILTER_OP_OR_DOUBLE, | |
| 953192ba MD |
122 | |
| 123 | /* load */ | |
| 124 | FILTER_OP_LOAD_FIELD_REF, | |
| 65775683 MD |
125 | FILTER_OP_LOAD_FIELD_REF_STRING, |
| 126 | FILTER_OP_LOAD_FIELD_REF_SEQUENCE, | |
| 127 | FILTER_OP_LOAD_FIELD_REF_S64, | |
| 128 | FILTER_OP_LOAD_FIELD_REF_DOUBLE, | |
| 129 | ||
| 953192ba MD |
130 | FILTER_OP_LOAD_STRING, |
| 131 | FILTER_OP_LOAD_S64, | |
| e90d8561 | 132 | FILTER_OP_LOAD_DOUBLE, |
| 953192ba MD |
133 | |
| 134 | NR_FILTER_OPS, | |
| 135 | }; | |
| 136 | ||
| 137 | typedef uint8_t filter_opcode_t; | |
| 138 | ||
| 139 | struct load_op { | |
| 140 | filter_opcode_t op; | |
| 141 | uint8_t reg; /* enum filter_register */ | |
| 142 | char data[0]; | |
| 143 | /* data to load. Size known by enum filter_opcode and null-term char. */ | |
| 144 | } __attribute__((packed)); | |
| 145 | ||
| 146 | struct binary_op { | |
| 147 | filter_opcode_t op; | |
| 148 | } __attribute__((packed)); | |
| 149 | ||
| 150 | struct unary_op { | |
| 151 | filter_opcode_t op; | |
| 152 | uint8_t reg; /* enum filter_register */ | |
| 153 | } __attribute__((packed)); | |
| 154 | ||
| 155 | /* skip_offset is absolute from start of bytecode */ | |
| 156 | struct logical_op { | |
| 157 | filter_opcode_t op; | |
| 158 | uint16_t skip_offset; /* bytecode insn, if skip second test */ | |
| 159 | } __attribute__((packed)); | |
| 160 | ||
| 161 | struct return_op { | |
| 162 | filter_opcode_t op; | |
| 163 | } __attribute__((packed)); | |
| 164 | ||
| 53a80697 | 165 | struct lttng_filter_bytecode_alloc { |
| 953192ba | 166 | uint16_t alloc_len; |
| 53a80697 | 167 | struct lttng_filter_bytecode b; |
| 953192ba MD |
168 | }; |
| 169 | ||
| 170 | static inline | |
| 53a80697 | 171 | unsigned int bytecode_get_len(struct lttng_filter_bytecode *bytecode) |
| 953192ba MD |
172 | { |
| 173 | return bytecode->len; | |
| 174 | } | |
| 175 | ||
| 176 | #endif /* _FILTER_BYTECODE_H */ |