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/* SPDX-License-Identifier: MIT
*
* lttng/filter-bytecode.h
*
* LTTng filter bytecode
*
* Copyright 2012-2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
#ifndef _FILTER_BYTECODE_H
#define _FILTER_BYTECODE_H
/*
* offsets are absolute from start of bytecode.
*/
struct field_ref {
/* Initially, symbol offset. After link, field offset. */
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));
struct literal_double {
double v;
} __attribute__((packed));
enum bytecode_op {
BYTECODE_OP_UNKNOWN = 0,
BYTECODE_OP_RETURN = 1,
/* binary */
BYTECODE_OP_MUL = 2,
BYTECODE_OP_DIV = 3,
BYTECODE_OP_MOD = 4,
BYTECODE_OP_PLUS = 5,
BYTECODE_OP_MINUS = 6,
BYTECODE_OP_BIT_RSHIFT = 7,
BYTECODE_OP_BIT_LSHIFT = 8,
BYTECODE_OP_BIT_AND = 9,
BYTECODE_OP_BIT_OR = 10,
BYTECODE_OP_BIT_XOR = 11,
/* binary comparators */
BYTECODE_OP_EQ = 12,
BYTECODE_OP_NE = 13,
BYTECODE_OP_GT = 14,
BYTECODE_OP_LT = 15,
BYTECODE_OP_GE = 16,
BYTECODE_OP_LE = 17,
/* string binary comparator: apply to */
BYTECODE_OP_EQ_STRING = 18,
BYTECODE_OP_NE_STRING = 19,
BYTECODE_OP_GT_STRING = 20,
BYTECODE_OP_LT_STRING = 21,
BYTECODE_OP_GE_STRING = 22,
BYTECODE_OP_LE_STRING = 23,
/* s64 binary comparator */
BYTECODE_OP_EQ_S64 = 24,
BYTECODE_OP_NE_S64 = 25,
BYTECODE_OP_GT_S64 = 26,
BYTECODE_OP_LT_S64 = 27,
BYTECODE_OP_GE_S64 = 28,
BYTECODE_OP_LE_S64 = 29,
/* double binary comparator */
BYTECODE_OP_EQ_DOUBLE = 30,
BYTECODE_OP_NE_DOUBLE = 31,
BYTECODE_OP_GT_DOUBLE = 32,
BYTECODE_OP_LT_DOUBLE = 33,
BYTECODE_OP_GE_DOUBLE = 34,
BYTECODE_OP_LE_DOUBLE = 35,
/* Mixed S64-double binary comparators */
BYTECODE_OP_EQ_DOUBLE_S64 = 36,
BYTECODE_OP_NE_DOUBLE_S64 = 37,
BYTECODE_OP_GT_DOUBLE_S64 = 38,
BYTECODE_OP_LT_DOUBLE_S64 = 39,
BYTECODE_OP_GE_DOUBLE_S64 = 40,
BYTECODE_OP_LE_DOUBLE_S64 = 41,
BYTECODE_OP_EQ_S64_DOUBLE = 42,
BYTECODE_OP_NE_S64_DOUBLE = 43,
BYTECODE_OP_GT_S64_DOUBLE = 44,
BYTECODE_OP_LT_S64_DOUBLE = 45,
BYTECODE_OP_GE_S64_DOUBLE = 46,
BYTECODE_OP_LE_S64_DOUBLE = 47,
/* unary */
BYTECODE_OP_UNARY_PLUS = 48,
BYTECODE_OP_UNARY_MINUS = 49,
BYTECODE_OP_UNARY_NOT = 50,
BYTECODE_OP_UNARY_PLUS_S64 = 51,
BYTECODE_OP_UNARY_MINUS_S64 = 52,
BYTECODE_OP_UNARY_NOT_S64 = 53,
BYTECODE_OP_UNARY_PLUS_DOUBLE = 54,
BYTECODE_OP_UNARY_MINUS_DOUBLE = 55,
BYTECODE_OP_UNARY_NOT_DOUBLE = 56,
/* logical */
BYTECODE_OP_AND = 57,
BYTECODE_OP_OR = 58,
/* load field ref */
BYTECODE_OP_LOAD_FIELD_REF = 59,
BYTECODE_OP_LOAD_FIELD_REF_STRING = 60,
BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE = 61,
BYTECODE_OP_LOAD_FIELD_REF_S64 = 62,
BYTECODE_OP_LOAD_FIELD_REF_DOUBLE = 63,
/* load immediate from operand */
BYTECODE_OP_LOAD_STRING = 64,
BYTECODE_OP_LOAD_S64 = 65,
BYTECODE_OP_LOAD_DOUBLE = 66,
/* cast */
BYTECODE_OP_CAST_TO_S64 = 67,
BYTECODE_OP_CAST_DOUBLE_TO_S64 = 68,
BYTECODE_OP_CAST_NOP = 69,
/* get context ref */
BYTECODE_OP_GET_CONTEXT_REF = 70,
BYTECODE_OP_GET_CONTEXT_REF_STRING = 71,
BYTECODE_OP_GET_CONTEXT_REF_S64 = 72,
BYTECODE_OP_GET_CONTEXT_REF_DOUBLE = 73,
/* load userspace field ref */
BYTECODE_OP_LOAD_FIELD_REF_USER_STRING = 74,
BYTECODE_OP_LOAD_FIELD_REF_USER_SEQUENCE = 75,
/*
* load immediate star globbing pattern (literal string)
* from immediate
*/
BYTECODE_OP_LOAD_STAR_GLOB_STRING = 76,
/* globbing pattern binary operator: apply to */
BYTECODE_OP_EQ_STAR_GLOB_STRING = 77,
BYTECODE_OP_NE_STAR_GLOB_STRING = 78,
/*
* Instructions for recursive traversal through composed types.
*/
BYTECODE_OP_GET_CONTEXT_ROOT = 79,
BYTECODE_OP_GET_APP_CONTEXT_ROOT = 80,
BYTECODE_OP_GET_PAYLOAD_ROOT = 81,
BYTECODE_OP_GET_SYMBOL = 82,
BYTECODE_OP_GET_SYMBOL_FIELD = 83,
BYTECODE_OP_GET_INDEX_U16 = 84,
BYTECODE_OP_GET_INDEX_U64 = 85,
BYTECODE_OP_LOAD_FIELD = 86,
BYTECODE_OP_LOAD_FIELD_S8 = 87,
BYTECODE_OP_LOAD_FIELD_S16 = 88,
BYTECODE_OP_LOAD_FIELD_S32 = 89,
BYTECODE_OP_LOAD_FIELD_S64 = 90,
BYTECODE_OP_LOAD_FIELD_U8 = 91,
BYTECODE_OP_LOAD_FIELD_U16 = 92,
BYTECODE_OP_LOAD_FIELD_U32 = 93,
BYTECODE_OP_LOAD_FIELD_U64 = 94,
BYTECODE_OP_LOAD_FIELD_STRING = 95,
BYTECODE_OP_LOAD_FIELD_SEQUENCE = 96,
BYTECODE_OP_LOAD_FIELD_DOUBLE = 97,
BYTECODE_OP_UNARY_BIT_NOT = 98,
BYTECODE_OP_RETURN_S64 = 99,
NR_BYTECODE_OPS,
};
typedef uint8_t bytecode_opcode_t;
struct load_op {
bytecode_opcode_t op;
char data[];
/* data to load. Size known by enum filter_opcode and null-term char. */
} __attribute__((packed));
struct binary_op {
bytecode_opcode_t op;
} __attribute__((packed));
struct unary_op {
bytecode_opcode_t op;
} __attribute__((packed));
/* skip_offset is absolute from start of bytecode */
struct logical_op {
bytecode_opcode_t op;
uint16_t skip_offset; /* bytecode insn, if skip second test */
} __attribute__((packed));
struct cast_op {
bytecode_opcode_t op;
} __attribute__((packed));
struct return_op {
bytecode_opcode_t op;
} __attribute__((packed));
#endif /* _FILTER_BYTECODE_H */
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