Commit | Line | Data |
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953192ba | 1 | /* |
0ae3cfc6 | 2 | * Copyright 2020 EfficiOS, Inc. |
953192ba | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
953192ba | 5 | * |
953192ba MD |
6 | */ |
7 | ||
0ae3cfc6 SM |
8 | #ifndef LTTNG_COMMON_BYTECODE_H |
9 | #define LTTNG_COMMON_BYTECODE_H | |
d00c599e | 10 | |
0ae3cfc6 SM |
11 | #include <stdint.h> |
12 | ||
13 | #include "common/macros.h" | |
14 | #include "common/sessiond-comm/sessiond-comm.h" | |
953192ba MD |
15 | |
16 | /* | |
17 | * offsets are absolute from start of bytecode. | |
18 | */ | |
19 | ||
953192ba MD |
20 | struct field_ref { |
21 | /* Initially, symbol offset. After link, field offset. */ | |
22 | uint16_t offset; | |
6f30f9b8 | 23 | } LTTNG_PACKED; |
953192ba | 24 | |
bff988fa MD |
25 | struct get_symbol { |
26 | /* Symbol offset. */ | |
661dfdd1 | 27 | uint16_t offset; |
bff988fa MD |
28 | } LTTNG_PACKED; |
29 | ||
30 | struct get_index_u16 { | |
31 | uint16_t index; | |
32 | } LTTNG_PACKED; | |
33 | ||
34 | struct get_index_u64 { | |
35 | uint64_t index; | |
661dfdd1 MD |
36 | } LTTNG_PACKED; |
37 | ||
953192ba MD |
38 | struct literal_numeric { |
39 | int64_t v; | |
6f30f9b8 | 40 | } LTTNG_PACKED; |
953192ba | 41 | |
e90d8561 MD |
42 | struct literal_double { |
43 | double v; | |
6f30f9b8 | 44 | } LTTNG_PACKED; |
e90d8561 | 45 | |
953192ba MD |
46 | struct literal_string { |
47 | char string[0]; | |
6f30f9b8 | 48 | } LTTNG_PACKED; |
953192ba MD |
49 | |
50 | enum filter_op { | |
7e6831d1 | 51 | FILTER_OP_UNKNOWN = 0, |
953192ba | 52 | |
7e6831d1 | 53 | FILTER_OP_RETURN = 1, |
953192ba MD |
54 | |
55 | /* binary */ | |
7e6831d1 MD |
56 | FILTER_OP_MUL = 2, |
57 | FILTER_OP_DIV = 3, | |
58 | FILTER_OP_MOD = 4, | |
59 | FILTER_OP_PLUS = 5, | |
60 | FILTER_OP_MINUS = 6, | |
116d3c01 MD |
61 | FILTER_OP_BIT_RSHIFT = 7, |
62 | FILTER_OP_BIT_LSHIFT = 8, | |
bff988fa MD |
63 | FILTER_OP_BIT_AND = 9, |
64 | FILTER_OP_BIT_OR = 10, | |
65 | FILTER_OP_BIT_XOR = 11, | |
78228322 MD |
66 | |
67 | /* binary comparators */ | |
7e6831d1 MD |
68 | FILTER_OP_EQ = 12, |
69 | FILTER_OP_NE = 13, | |
70 | FILTER_OP_GT = 14, | |
71 | FILTER_OP_LT = 15, | |
72 | FILTER_OP_GE = 16, | |
73 | FILTER_OP_LE = 17, | |
953192ba | 74 | |
9f449915 | 75 | /* string binary comparator: apply to */ |
7e6831d1 MD |
76 | FILTER_OP_EQ_STRING = 18, |
77 | FILTER_OP_NE_STRING = 19, | |
78 | FILTER_OP_GT_STRING = 20, | |
79 | FILTER_OP_LT_STRING = 21, | |
80 | FILTER_OP_GE_STRING = 22, | |
81 | FILTER_OP_LE_STRING = 23, | |
78228322 MD |
82 | |
83 | /* s64 binary comparator */ | |
7e6831d1 MD |
84 | FILTER_OP_EQ_S64 = 24, |
85 | FILTER_OP_NE_S64 = 25, | |
86 | FILTER_OP_GT_S64 = 26, | |
87 | FILTER_OP_LT_S64 = 27, | |
88 | FILTER_OP_GE_S64 = 28, | |
89 | FILTER_OP_LE_S64 = 29, | |
78228322 MD |
90 | |
91 | /* double binary comparator */ | |
7e6831d1 MD |
92 | FILTER_OP_EQ_DOUBLE = 30, |
93 | FILTER_OP_NE_DOUBLE = 31, | |
94 | FILTER_OP_GT_DOUBLE = 32, | |
95 | FILTER_OP_LT_DOUBLE = 33, | |
96 | FILTER_OP_GE_DOUBLE = 34, | |
97 | FILTER_OP_LE_DOUBLE = 35, | |
78228322 | 98 | |
78370c0c | 99 | /* Mixed S64-double binary comparators */ |
7e6831d1 MD |
100 | FILTER_OP_EQ_DOUBLE_S64 = 36, |
101 | FILTER_OP_NE_DOUBLE_S64 = 37, | |
102 | FILTER_OP_GT_DOUBLE_S64 = 38, | |
103 | FILTER_OP_LT_DOUBLE_S64 = 39, | |
104 | FILTER_OP_GE_DOUBLE_S64 = 40, | |
105 | FILTER_OP_LE_DOUBLE_S64 = 41, | |
106 | ||
107 | FILTER_OP_EQ_S64_DOUBLE = 42, | |
108 | FILTER_OP_NE_S64_DOUBLE = 43, | |
109 | FILTER_OP_GT_S64_DOUBLE = 44, | |
110 | FILTER_OP_LT_S64_DOUBLE = 45, | |
111 | FILTER_OP_GE_S64_DOUBLE = 46, | |
112 | FILTER_OP_LE_S64_DOUBLE = 47, | |
78370c0c | 113 | |
953192ba | 114 | /* unary */ |
7e6831d1 MD |
115 | FILTER_OP_UNARY_PLUS = 48, |
116 | FILTER_OP_UNARY_MINUS = 49, | |
117 | FILTER_OP_UNARY_NOT = 50, | |
118 | FILTER_OP_UNARY_PLUS_S64 = 51, | |
119 | FILTER_OP_UNARY_MINUS_S64 = 52, | |
120 | FILTER_OP_UNARY_NOT_S64 = 53, | |
121 | FILTER_OP_UNARY_PLUS_DOUBLE = 54, | |
122 | FILTER_OP_UNARY_MINUS_DOUBLE = 55, | |
123 | FILTER_OP_UNARY_NOT_DOUBLE = 56, | |
953192ba MD |
124 | |
125 | /* logical */ | |
7e6831d1 MD |
126 | FILTER_OP_AND = 57, |
127 | FILTER_OP_OR = 58, | |
953192ba | 128 | |
586dc72f | 129 | /* load field ref */ |
7e6831d1 MD |
130 | FILTER_OP_LOAD_FIELD_REF = 59, |
131 | FILTER_OP_LOAD_FIELD_REF_STRING = 60, | |
132 | FILTER_OP_LOAD_FIELD_REF_SEQUENCE = 61, | |
133 | FILTER_OP_LOAD_FIELD_REF_S64 = 62, | |
134 | FILTER_OP_LOAD_FIELD_REF_DOUBLE = 63, | |
65775683 | 135 | |
586dc72f | 136 | /* load immediate from operand */ |
7e6831d1 MD |
137 | FILTER_OP_LOAD_STRING = 64, |
138 | FILTER_OP_LOAD_S64 = 65, | |
139 | FILTER_OP_LOAD_DOUBLE = 66, | |
953192ba | 140 | |
8cf9540a | 141 | /* cast */ |
7e6831d1 MD |
142 | FILTER_OP_CAST_TO_S64 = 67, |
143 | FILTER_OP_CAST_DOUBLE_TO_S64 = 68, | |
144 | FILTER_OP_CAST_NOP = 69, | |
8cf9540a | 145 | |
586dc72f MD |
146 | /* get context ref */ |
147 | FILTER_OP_GET_CONTEXT_REF = 70, | |
148 | FILTER_OP_GET_CONTEXT_REF_STRING = 71, | |
149 | FILTER_OP_GET_CONTEXT_REF_S64 = 72, | |
150 | FILTER_OP_GET_CONTEXT_REF_DOUBLE = 73, | |
151 | ||
00a62084 MD |
152 | /* load userspace field ref */ |
153 | FILTER_OP_LOAD_FIELD_REF_USER_STRING = 74, | |
154 | FILTER_OP_LOAD_FIELD_REF_USER_SEQUENCE = 75, | |
155 | ||
9f449915 PP |
156 | /* |
157 | * load immediate star globbing pattern (literal string) | |
158 | * from immediate | |
159 | */ | |
160 | FILTER_OP_LOAD_STAR_GLOB_STRING = 76, | |
161 | ||
162 | /* globbing pattern binary operator: apply to */ | |
163 | FILTER_OP_EQ_STAR_GLOB_STRING = 77, | |
164 | FILTER_OP_NE_STAR_GLOB_STRING = 78, | |
165 | ||
bff988fa MD |
166 | /* |
167 | * Instructions for recursive traversal through composed types. | |
168 | */ | |
169 | FILTER_OP_GET_CONTEXT_ROOT = 79, | |
170 | FILTER_OP_GET_APP_CONTEXT_ROOT = 80, | |
171 | FILTER_OP_GET_PAYLOAD_ROOT = 81, | |
172 | ||
173 | FILTER_OP_GET_SYMBOL = 82, | |
174 | FILTER_OP_GET_SYMBOL_FIELD = 83, | |
175 | FILTER_OP_GET_INDEX_U16 = 84, | |
176 | FILTER_OP_GET_INDEX_U64 = 85, | |
177 | ||
178 | FILTER_OP_LOAD_FIELD = 86, | |
179 | FILTER_OP_LOAD_FIELD_S8 = 87, | |
180 | FILTER_OP_LOAD_FIELD_S16 = 88, | |
181 | FILTER_OP_LOAD_FIELD_S32 = 89, | |
182 | FILTER_OP_LOAD_FIELD_S64 = 90, | |
183 | FILTER_OP_LOAD_FIELD_U8 = 91, | |
184 | FILTER_OP_LOAD_FIELD_U16 = 92, | |
185 | FILTER_OP_LOAD_FIELD_U32 = 93, | |
186 | FILTER_OP_LOAD_FIELD_U64 = 94, | |
187 | FILTER_OP_LOAD_FIELD_STRING = 95, | |
188 | FILTER_OP_LOAD_FIELD_SEQUENCE = 96, | |
189 | FILTER_OP_LOAD_FIELD_DOUBLE = 97, | |
661dfdd1 | 190 | |
116d3c01 MD |
191 | FILTER_OP_UNARY_BIT_NOT = 98, |
192 | ||
ba8f6b16 MD |
193 | FILTER_OP_RETURN_S64 = 99, |
194 | ||
953192ba MD |
195 | NR_FILTER_OPS, |
196 | }; | |
197 | ||
198 | typedef uint8_t filter_opcode_t; | |
199 | ||
200 | struct load_op { | |
201 | filter_opcode_t op; | |
953192ba MD |
202 | char data[0]; |
203 | /* data to load. Size known by enum filter_opcode and null-term char. */ | |
6f30f9b8 | 204 | } LTTNG_PACKED; |
953192ba MD |
205 | |
206 | struct binary_op { | |
207 | filter_opcode_t op; | |
6f30f9b8 | 208 | } LTTNG_PACKED; |
953192ba MD |
209 | |
210 | struct unary_op { | |
211 | filter_opcode_t op; | |
6f30f9b8 | 212 | } LTTNG_PACKED; |
953192ba MD |
213 | |
214 | /* skip_offset is absolute from start of bytecode */ | |
215 | struct logical_op { | |
216 | filter_opcode_t op; | |
217 | uint16_t skip_offset; /* bytecode insn, if skip second test */ | |
6f30f9b8 | 218 | } LTTNG_PACKED; |
953192ba | 219 | |
8cf9540a MD |
220 | struct cast_op { |
221 | filter_opcode_t op; | |
6f30f9b8 | 222 | } LTTNG_PACKED; |
8cf9540a | 223 | |
953192ba MD |
224 | struct return_op { |
225 | filter_opcode_t op; | |
6f30f9b8 | 226 | } LTTNG_PACKED; |
953192ba | 227 | |
53a80697 | 228 | struct lttng_filter_bytecode_alloc { |
5ddb0a08 | 229 | uint32_t alloc_len; |
53a80697 | 230 | struct lttng_filter_bytecode b; |
953192ba MD |
231 | }; |
232 | ||
0ae3cfc6 SM |
233 | LTTNG_HIDDEN int bytecode_init(struct lttng_filter_bytecode_alloc **fb); |
234 | LTTNG_HIDDEN int32_t bytecode_reserve(struct lttng_filter_bytecode_alloc **fb, | |
235 | uint32_t align, uint32_t len); | |
236 | LTTNG_HIDDEN int bytecode_push(struct lttng_filter_bytecode_alloc **fb, | |
237 | const void *data, uint32_t align, uint32_t len); | |
238 | LTTNG_HIDDEN int bytecode_push_logical(struct lttng_filter_bytecode_alloc **fb, | |
239 | struct logical_op *data, uint32_t align, uint32_t len, | |
240 | uint16_t *skip_offset); | |
241 | ||
953192ba | 242 | static inline |
53a80697 | 243 | unsigned int bytecode_get_len(struct lttng_filter_bytecode *bytecode) |
953192ba MD |
244 | { |
245 | return bytecode->len; | |
246 | } | |
247 | ||
0ae3cfc6 | 248 | #endif /* LTTNG_COMMON_BYTECODE_H */ |