Drop support for kernels < 3.0 from skb instrumentation
[lttng-modules.git] / filter-bytecode.h
index 376c75184ff84b937e2680077c2258b91b20d9f6..65d34f02edb43d5125e354efa46908c6bf167222 100644 (file)
@@ -1,32 +1,15 @@
-#ifndef _FILTER_BYTECODE_H
-#define _FILTER_BYTECODE_H
-
-/*
+/* SPDX-License-Identifier: MIT
+ *
  * filter-bytecode.h
  *
  * LTTng filter bytecode
  *
  * Copyright 2012-2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
  */
 
+#ifndef _FILTER_BYTECODE_H
+#define _FILTER_BYTECODE_H
+
 /*
  * offsets are absolute from start of bytecode.
  */
@@ -36,6 +19,19 @@ struct field_ref {
        uint16_t offset;
 } __attribute__((packed));
 
+struct get_symbol {
+       /* Symbol offset. */
+       uint16_t offset;
+} __attribute__((packed));
+
+struct get_index_u16 {
+       uint16_t index;
+} __attribute__((packed));
+
+struct get_index_u64 {
+       uint64_t index;
+} __attribute__((packed));
+
 struct literal_numeric {
        int64_t v;
 } __attribute__((packed));
@@ -49,110 +45,149 @@ struct literal_string {
 } __attribute__((packed));
 
 enum filter_op {
-       FILTER_OP_UNKNOWN = 0,
+       FILTER_OP_UNKNOWN                       = 0,
 
-       FILTER_OP_RETURN,
+       FILTER_OP_RETURN                        = 1,
 
        /* binary */
-       FILTER_OP_MUL,
-       FILTER_OP_DIV,
-       FILTER_OP_MOD,
-       FILTER_OP_PLUS,
-       FILTER_OP_MINUS,
-       FILTER_OP_RSHIFT,
-       FILTER_OP_LSHIFT,
-       FILTER_OP_BIN_AND,
-       FILTER_OP_BIN_OR,
-       FILTER_OP_BIN_XOR,
+       FILTER_OP_MUL                           = 2,
+       FILTER_OP_DIV                           = 3,
+       FILTER_OP_MOD                           = 4,
+       FILTER_OP_PLUS                          = 5,
+       FILTER_OP_MINUS                         = 6,
+       FILTER_OP_BIT_RSHIFT                    = 7,
+       FILTER_OP_BIT_LSHIFT                    = 8,
+       FILTER_OP_BIT_AND                       = 9,
+       FILTER_OP_BIT_OR                        = 10,
+       FILTER_OP_BIT_XOR                       = 11,
 
        /* binary comparators */
-       FILTER_OP_EQ,
-       FILTER_OP_NE,
-       FILTER_OP_GT,
-       FILTER_OP_LT,
-       FILTER_OP_GE,
-       FILTER_OP_LE,
-
-       /* string binary comparator */
-       FILTER_OP_EQ_STRING,
-       FILTER_OP_NE_STRING,
-       FILTER_OP_GT_STRING,
-       FILTER_OP_LT_STRING,
-       FILTER_OP_GE_STRING,
-       FILTER_OP_LE_STRING,
+       FILTER_OP_EQ                            = 12,
+       FILTER_OP_NE                            = 13,
+       FILTER_OP_GT                            = 14,
+       FILTER_OP_LT                            = 15,
+       FILTER_OP_GE                            = 16,
+       FILTER_OP_LE                            = 17,
+
+       /* string binary comparator: apply to  */
+       FILTER_OP_EQ_STRING                     = 18,
+       FILTER_OP_NE_STRING                     = 19,
+       FILTER_OP_GT_STRING                     = 20,
+       FILTER_OP_LT_STRING                     = 21,
+       FILTER_OP_GE_STRING                     = 22,
+       FILTER_OP_LE_STRING                     = 23,
 
        /* s64 binary comparator */
-       FILTER_OP_EQ_S64,
-       FILTER_OP_NE_S64,
-       FILTER_OP_GT_S64,
-       FILTER_OP_LT_S64,
-       FILTER_OP_GE_S64,
-       FILTER_OP_LE_S64,
+       FILTER_OP_EQ_S64                        = 24,
+       FILTER_OP_NE_S64                        = 25,
+       FILTER_OP_GT_S64                        = 26,
+       FILTER_OP_LT_S64                        = 27,
+       FILTER_OP_GE_S64                        = 28,
+       FILTER_OP_LE_S64                        = 29,
 
        /* double binary comparator */
-       FILTER_OP_EQ_DOUBLE,
-       FILTER_OP_NE_DOUBLE,
-       FILTER_OP_GT_DOUBLE,
-       FILTER_OP_LT_DOUBLE,
-       FILTER_OP_GE_DOUBLE,
-       FILTER_OP_LE_DOUBLE,
+       FILTER_OP_EQ_DOUBLE                     = 30,
+       FILTER_OP_NE_DOUBLE                     = 31,
+       FILTER_OP_GT_DOUBLE                     = 32,
+       FILTER_OP_LT_DOUBLE                     = 33,
+       FILTER_OP_GE_DOUBLE                     = 34,
+       FILTER_OP_LE_DOUBLE                     = 35,
 
        /* Mixed S64-double binary comparators */
-       FILTER_OP_EQ_DOUBLE_S64,
-       FILTER_OP_NE_DOUBLE_S64,
-       FILTER_OP_GT_DOUBLE_S64,
-       FILTER_OP_LT_DOUBLE_S64,
-       FILTER_OP_GE_DOUBLE_S64,
-       FILTER_OP_LE_DOUBLE_S64,
-
-       FILTER_OP_EQ_S64_DOUBLE,
-       FILTER_OP_NE_S64_DOUBLE,
-       FILTER_OP_GT_S64_DOUBLE,
-       FILTER_OP_LT_S64_DOUBLE,
-       FILTER_OP_GE_S64_DOUBLE,
-       FILTER_OP_LE_S64_DOUBLE,
+       FILTER_OP_EQ_DOUBLE_S64                 = 36,
+       FILTER_OP_NE_DOUBLE_S64                 = 37,
+       FILTER_OP_GT_DOUBLE_S64                 = 38,
+       FILTER_OP_LT_DOUBLE_S64                 = 39,
+       FILTER_OP_GE_DOUBLE_S64                 = 40,
+       FILTER_OP_LE_DOUBLE_S64                 = 41,
+
+       FILTER_OP_EQ_S64_DOUBLE                 = 42,
+       FILTER_OP_NE_S64_DOUBLE                 = 43,
+       FILTER_OP_GT_S64_DOUBLE                 = 44,
+       FILTER_OP_LT_S64_DOUBLE                 = 45,
+       FILTER_OP_GE_S64_DOUBLE                 = 46,
+       FILTER_OP_LE_S64_DOUBLE                 = 47,
 
        /* unary */
-       FILTER_OP_UNARY_PLUS,
-       FILTER_OP_UNARY_MINUS,
-       FILTER_OP_UNARY_NOT,
-       FILTER_OP_UNARY_PLUS_S64,
-       FILTER_OP_UNARY_MINUS_S64,
-       FILTER_OP_UNARY_NOT_S64,
-       FILTER_OP_UNARY_PLUS_DOUBLE,
-       FILTER_OP_UNARY_MINUS_DOUBLE,
-       FILTER_OP_UNARY_NOT_DOUBLE,
+       FILTER_OP_UNARY_PLUS                    = 48,
+       FILTER_OP_UNARY_MINUS                   = 49,
+       FILTER_OP_UNARY_NOT                     = 50,
+       FILTER_OP_UNARY_PLUS_S64                = 51,
+       FILTER_OP_UNARY_MINUS_S64               = 52,
+       FILTER_OP_UNARY_NOT_S64                 = 53,
+       FILTER_OP_UNARY_PLUS_DOUBLE             = 54,
+       FILTER_OP_UNARY_MINUS_DOUBLE            = 55,
+       FILTER_OP_UNARY_NOT_DOUBLE              = 56,
 
        /* logical */
-       FILTER_OP_AND,
-       FILTER_OP_OR,
+       FILTER_OP_AND                           = 57,
+       FILTER_OP_OR                            = 58,
 
        /* load field ref */
-       FILTER_OP_LOAD_FIELD_REF,
-       FILTER_OP_LOAD_FIELD_REF_STRING,
-       FILTER_OP_LOAD_FIELD_REF_SEQUENCE,
-       FILTER_OP_LOAD_FIELD_REF_S64,
-       FILTER_OP_LOAD_FIELD_REF_DOUBLE,
+       FILTER_OP_LOAD_FIELD_REF                = 59,
+       FILTER_OP_LOAD_FIELD_REF_STRING         = 60,
+       FILTER_OP_LOAD_FIELD_REF_SEQUENCE       = 61,
+       FILTER_OP_LOAD_FIELD_REF_S64            = 62,
+       FILTER_OP_LOAD_FIELD_REF_DOUBLE         = 63,
 
        /* load immediate from operand */
-       FILTER_OP_LOAD_STRING,
-       FILTER_OP_LOAD_S64,
-       FILTER_OP_LOAD_DOUBLE,
+       FILTER_OP_LOAD_STRING                   = 64,
+       FILTER_OP_LOAD_S64                      = 65,
+       FILTER_OP_LOAD_DOUBLE                   = 66,
 
        /* cast */
-       FILTER_OP_CAST_TO_S64,
-       FILTER_OP_CAST_DOUBLE_TO_S64,
-       FILTER_OP_CAST_NOP,
+       FILTER_OP_CAST_TO_S64                   = 67,
+       FILTER_OP_CAST_DOUBLE_TO_S64            = 68,
+       FILTER_OP_CAST_NOP                      = 69,
 
        /* get context ref */
-       FILTER_OP_GET_CONTEXT_REF,
-       FILTER_OP_GET_CONTEXT_REF_STRING,
-       FILTER_OP_GET_CONTEXT_REF_S64,
-       FILTER_OP_GET_CONTEXT_REF_DOUBLE,
+       FILTER_OP_GET_CONTEXT_REF               = 70,
+       FILTER_OP_GET_CONTEXT_REF_STRING        = 71,
+       FILTER_OP_GET_CONTEXT_REF_S64           = 72,
+       FILTER_OP_GET_CONTEXT_REF_DOUBLE        = 73,
 
        /* load userspace field ref */
-       FILTER_OP_LOAD_FIELD_REF_USER_STRING,
-       FILTER_OP_LOAD_FIELD_REF_USER_SEQUENCE,
+       FILTER_OP_LOAD_FIELD_REF_USER_STRING    = 74,
+       FILTER_OP_LOAD_FIELD_REF_USER_SEQUENCE  = 75,
+
+       /*
+        * load immediate star globbing pattern (literal string)
+        * from immediate
+        */
+       FILTER_OP_LOAD_STAR_GLOB_STRING         = 76,
+
+       /* globbing pattern binary operator: apply to */
+       FILTER_OP_EQ_STAR_GLOB_STRING           = 77,
+       FILTER_OP_NE_STAR_GLOB_STRING           = 78,
+
+       /*
+        * Instructions for recursive traversal through composed types.
+        */
+       FILTER_OP_GET_CONTEXT_ROOT              = 79,
+       FILTER_OP_GET_APP_CONTEXT_ROOT          = 80,
+       FILTER_OP_GET_PAYLOAD_ROOT              = 81,
+
+       FILTER_OP_GET_SYMBOL                    = 82,
+       FILTER_OP_GET_SYMBOL_FIELD              = 83,
+       FILTER_OP_GET_INDEX_U16                 = 84,
+       FILTER_OP_GET_INDEX_U64                 = 85,
+
+       FILTER_OP_LOAD_FIELD                    = 86,
+       FILTER_OP_LOAD_FIELD_S8                 = 87,
+       FILTER_OP_LOAD_FIELD_S16                = 88,
+       FILTER_OP_LOAD_FIELD_S32                = 89,
+       FILTER_OP_LOAD_FIELD_S64                = 90,
+       FILTER_OP_LOAD_FIELD_U8                 = 91,
+       FILTER_OP_LOAD_FIELD_U16                = 92,
+       FILTER_OP_LOAD_FIELD_U32                = 93,
+       FILTER_OP_LOAD_FIELD_U64                = 94,
+       FILTER_OP_LOAD_FIELD_STRING             = 95,
+       FILTER_OP_LOAD_FIELD_SEQUENCE           = 96,
+       FILTER_OP_LOAD_FIELD_DOUBLE             = 97,
+
+       FILTER_OP_UNARY_BIT_NOT                 = 98,
+
+       FILTER_OP_RETURN_S64                    = 99,
 
        NR_FILTER_OPS,
 };
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