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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 | * | |
ab5be9fa | 9 | * Copyright 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
953192ba | 10 | * |
ab5be9fa | 11 | * SPDX-License-Identifier: LGPL-2.1-only |
953192ba | 12 | * |
953192ba MD |
13 | */ |
14 | ||
d00c599e | 15 | #include <common/sessiond-comm/sessiond-comm.h> |
aa52c986 | 16 | #include <common/macros.h> |
d00c599e | 17 | |
953192ba MD |
18 | #include "filter-ast.h" |
19 | ||
20 | /* | |
21 | * offsets are absolute from start of bytecode. | |
22 | */ | |
23 | ||
953192ba MD |
24 | struct field_ref { |
25 | /* Initially, symbol offset. After link, field offset. */ | |
26 | uint16_t offset; | |
6f30f9b8 | 27 | } LTTNG_PACKED; |
953192ba | 28 | |
bff988fa MD |
29 | struct get_symbol { |
30 | /* Symbol offset. */ | |
661dfdd1 | 31 | uint16_t offset; |
bff988fa MD |
32 | } LTTNG_PACKED; |
33 | ||
34 | struct get_index_u16 { | |
35 | uint16_t index; | |
36 | } LTTNG_PACKED; | |
37 | ||
38 | struct get_index_u64 { | |
39 | uint64_t index; | |
661dfdd1 MD |
40 | } LTTNG_PACKED; |
41 | ||
953192ba MD |
42 | struct literal_numeric { |
43 | int64_t v; | |
6f30f9b8 | 44 | } LTTNG_PACKED; |
953192ba | 45 | |
e90d8561 MD |
46 | struct literal_double { |
47 | double v; | |
6f30f9b8 | 48 | } LTTNG_PACKED; |
e90d8561 | 49 | |
953192ba MD |
50 | struct literal_string { |
51 | char string[0]; | |
6f30f9b8 | 52 | } LTTNG_PACKED; |
953192ba MD |
53 | |
54 | enum filter_op { | |
7e6831d1 | 55 | FILTER_OP_UNKNOWN = 0, |
953192ba | 56 | |
7e6831d1 | 57 | FILTER_OP_RETURN = 1, |
953192ba MD |
58 | |
59 | /* binary */ | |
7e6831d1 MD |
60 | FILTER_OP_MUL = 2, |
61 | FILTER_OP_DIV = 3, | |
62 | FILTER_OP_MOD = 4, | |
63 | FILTER_OP_PLUS = 5, | |
64 | FILTER_OP_MINUS = 6, | |
116d3c01 MD |
65 | FILTER_OP_BIT_RSHIFT = 7, |
66 | FILTER_OP_BIT_LSHIFT = 8, | |
bff988fa MD |
67 | FILTER_OP_BIT_AND = 9, |
68 | FILTER_OP_BIT_OR = 10, | |
69 | FILTER_OP_BIT_XOR = 11, | |
78228322 MD |
70 | |
71 | /* binary comparators */ | |
7e6831d1 MD |
72 | FILTER_OP_EQ = 12, |
73 | FILTER_OP_NE = 13, | |
74 | FILTER_OP_GT = 14, | |
75 | FILTER_OP_LT = 15, | |
76 | FILTER_OP_GE = 16, | |
77 | FILTER_OP_LE = 17, | |
953192ba | 78 | |
9f449915 | 79 | /* string binary comparator: apply to */ |
7e6831d1 MD |
80 | FILTER_OP_EQ_STRING = 18, |
81 | FILTER_OP_NE_STRING = 19, | |
82 | FILTER_OP_GT_STRING = 20, | |
83 | FILTER_OP_LT_STRING = 21, | |
84 | FILTER_OP_GE_STRING = 22, | |
85 | FILTER_OP_LE_STRING = 23, | |
78228322 MD |
86 | |
87 | /* s64 binary comparator */ | |
7e6831d1 MD |
88 | FILTER_OP_EQ_S64 = 24, |
89 | FILTER_OP_NE_S64 = 25, | |
90 | FILTER_OP_GT_S64 = 26, | |
91 | FILTER_OP_LT_S64 = 27, | |
92 | FILTER_OP_GE_S64 = 28, | |
93 | FILTER_OP_LE_S64 = 29, | |
78228322 MD |
94 | |
95 | /* double binary comparator */ | |
7e6831d1 MD |
96 | FILTER_OP_EQ_DOUBLE = 30, |
97 | FILTER_OP_NE_DOUBLE = 31, | |
98 | FILTER_OP_GT_DOUBLE = 32, | |
99 | FILTER_OP_LT_DOUBLE = 33, | |
100 | FILTER_OP_GE_DOUBLE = 34, | |
101 | FILTER_OP_LE_DOUBLE = 35, | |
78228322 | 102 | |
78370c0c | 103 | /* Mixed S64-double binary comparators */ |
7e6831d1 MD |
104 | FILTER_OP_EQ_DOUBLE_S64 = 36, |
105 | FILTER_OP_NE_DOUBLE_S64 = 37, | |
106 | FILTER_OP_GT_DOUBLE_S64 = 38, | |
107 | FILTER_OP_LT_DOUBLE_S64 = 39, | |
108 | FILTER_OP_GE_DOUBLE_S64 = 40, | |
109 | FILTER_OP_LE_DOUBLE_S64 = 41, | |
110 | ||
111 | FILTER_OP_EQ_S64_DOUBLE = 42, | |
112 | FILTER_OP_NE_S64_DOUBLE = 43, | |
113 | FILTER_OP_GT_S64_DOUBLE = 44, | |
114 | FILTER_OP_LT_S64_DOUBLE = 45, | |
115 | FILTER_OP_GE_S64_DOUBLE = 46, | |
116 | FILTER_OP_LE_S64_DOUBLE = 47, | |
78370c0c | 117 | |
953192ba | 118 | /* unary */ |
7e6831d1 MD |
119 | FILTER_OP_UNARY_PLUS = 48, |
120 | FILTER_OP_UNARY_MINUS = 49, | |
121 | FILTER_OP_UNARY_NOT = 50, | |
122 | FILTER_OP_UNARY_PLUS_S64 = 51, | |
123 | FILTER_OP_UNARY_MINUS_S64 = 52, | |
124 | FILTER_OP_UNARY_NOT_S64 = 53, | |
125 | FILTER_OP_UNARY_PLUS_DOUBLE = 54, | |
126 | FILTER_OP_UNARY_MINUS_DOUBLE = 55, | |
127 | FILTER_OP_UNARY_NOT_DOUBLE = 56, | |
953192ba MD |
128 | |
129 | /* logical */ | |
7e6831d1 MD |
130 | FILTER_OP_AND = 57, |
131 | FILTER_OP_OR = 58, | |
953192ba | 132 | |
586dc72f | 133 | /* load field ref */ |
7e6831d1 MD |
134 | FILTER_OP_LOAD_FIELD_REF = 59, |
135 | FILTER_OP_LOAD_FIELD_REF_STRING = 60, | |
136 | FILTER_OP_LOAD_FIELD_REF_SEQUENCE = 61, | |
137 | FILTER_OP_LOAD_FIELD_REF_S64 = 62, | |
138 | FILTER_OP_LOAD_FIELD_REF_DOUBLE = 63, | |
65775683 | 139 | |
586dc72f | 140 | /* load immediate from operand */ |
7e6831d1 MD |
141 | FILTER_OP_LOAD_STRING = 64, |
142 | FILTER_OP_LOAD_S64 = 65, | |
143 | FILTER_OP_LOAD_DOUBLE = 66, | |
953192ba | 144 | |
8cf9540a | 145 | /* cast */ |
7e6831d1 MD |
146 | FILTER_OP_CAST_TO_S64 = 67, |
147 | FILTER_OP_CAST_DOUBLE_TO_S64 = 68, | |
148 | FILTER_OP_CAST_NOP = 69, | |
8cf9540a | 149 | |
586dc72f MD |
150 | /* get context ref */ |
151 | FILTER_OP_GET_CONTEXT_REF = 70, | |
152 | FILTER_OP_GET_CONTEXT_REF_STRING = 71, | |
153 | FILTER_OP_GET_CONTEXT_REF_S64 = 72, | |
154 | FILTER_OP_GET_CONTEXT_REF_DOUBLE = 73, | |
155 | ||
00a62084 MD |
156 | /* load userspace field ref */ |
157 | FILTER_OP_LOAD_FIELD_REF_USER_STRING = 74, | |
158 | FILTER_OP_LOAD_FIELD_REF_USER_SEQUENCE = 75, | |
159 | ||
9f449915 PP |
160 | /* |
161 | * load immediate star globbing pattern (literal string) | |
162 | * from immediate | |
163 | */ | |
164 | FILTER_OP_LOAD_STAR_GLOB_STRING = 76, | |
165 | ||
166 | /* globbing pattern binary operator: apply to */ | |
167 | FILTER_OP_EQ_STAR_GLOB_STRING = 77, | |
168 | FILTER_OP_NE_STAR_GLOB_STRING = 78, | |
169 | ||
bff988fa MD |
170 | /* |
171 | * Instructions for recursive traversal through composed types. | |
172 | */ | |
173 | FILTER_OP_GET_CONTEXT_ROOT = 79, | |
174 | FILTER_OP_GET_APP_CONTEXT_ROOT = 80, | |
175 | FILTER_OP_GET_PAYLOAD_ROOT = 81, | |
176 | ||
177 | FILTER_OP_GET_SYMBOL = 82, | |
178 | FILTER_OP_GET_SYMBOL_FIELD = 83, | |
179 | FILTER_OP_GET_INDEX_U16 = 84, | |
180 | FILTER_OP_GET_INDEX_U64 = 85, | |
181 | ||
182 | FILTER_OP_LOAD_FIELD = 86, | |
183 | FILTER_OP_LOAD_FIELD_S8 = 87, | |
184 | FILTER_OP_LOAD_FIELD_S16 = 88, | |
185 | FILTER_OP_LOAD_FIELD_S32 = 89, | |
186 | FILTER_OP_LOAD_FIELD_S64 = 90, | |
187 | FILTER_OP_LOAD_FIELD_U8 = 91, | |
188 | FILTER_OP_LOAD_FIELD_U16 = 92, | |
189 | FILTER_OP_LOAD_FIELD_U32 = 93, | |
190 | FILTER_OP_LOAD_FIELD_U64 = 94, | |
191 | FILTER_OP_LOAD_FIELD_STRING = 95, | |
192 | FILTER_OP_LOAD_FIELD_SEQUENCE = 96, | |
193 | FILTER_OP_LOAD_FIELD_DOUBLE = 97, | |
661dfdd1 | 194 | |
116d3c01 MD |
195 | FILTER_OP_UNARY_BIT_NOT = 98, |
196 | ||
ba8f6b16 MD |
197 | FILTER_OP_RETURN_S64 = 99, |
198 | ||
953192ba MD |
199 | NR_FILTER_OPS, |
200 | }; | |
201 | ||
202 | typedef uint8_t filter_opcode_t; | |
203 | ||
204 | struct load_op { | |
205 | filter_opcode_t op; | |
953192ba MD |
206 | char data[0]; |
207 | /* data to load. Size known by enum filter_opcode and null-term char. */ | |
6f30f9b8 | 208 | } LTTNG_PACKED; |
953192ba MD |
209 | |
210 | struct binary_op { | |
211 | filter_opcode_t op; | |
6f30f9b8 | 212 | } LTTNG_PACKED; |
953192ba MD |
213 | |
214 | struct unary_op { | |
215 | filter_opcode_t op; | |
6f30f9b8 | 216 | } LTTNG_PACKED; |
953192ba MD |
217 | |
218 | /* skip_offset is absolute from start of bytecode */ | |
219 | struct logical_op { | |
220 | filter_opcode_t op; | |
221 | uint16_t skip_offset; /* bytecode insn, if skip second test */ | |
6f30f9b8 | 222 | } LTTNG_PACKED; |
953192ba | 223 | |
8cf9540a MD |
224 | struct cast_op { |
225 | filter_opcode_t op; | |
6f30f9b8 | 226 | } LTTNG_PACKED; |
8cf9540a | 227 | |
953192ba MD |
228 | struct return_op { |
229 | filter_opcode_t op; | |
6f30f9b8 | 230 | } LTTNG_PACKED; |
953192ba | 231 | |
53a80697 | 232 | struct lttng_filter_bytecode_alloc { |
5ddb0a08 | 233 | uint32_t alloc_len; |
53a80697 | 234 | struct lttng_filter_bytecode b; |
953192ba MD |
235 | }; |
236 | ||
237 | static inline | |
53a80697 | 238 | unsigned int bytecode_get_len(struct lttng_filter_bytecode *bytecode) |
953192ba MD |
239 | { |
240 | return bytecode->len; | |
241 | } | |
242 | ||
243 | #endif /* _FILTER_BYTECODE_H */ |