#ifndef _FILTER_BYTECODE_H
#define _FILTER_BYTECODE_H
/*
* filter-bytecode.h
*
* LTTng filter bytecode
*
* Copyright 2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License, version 2.1 only,
* as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <lttng/ust-abi.h>
/*
* offsets are absolute from start of bytecode.
*/
struct field_ref {
/* Initially, symbol offset. After link, field offset. */
uint16_t offset;
} __attribute__((packed));
struct literal_numeric {
int64_t v;
} __attribute__((packed));
struct literal_double {
double v;
} __attribute__((packed));
struct literal_string {
char string[0];
} __attribute__((packed));
enum filter_op {
FILTER_OP_UNKNOWN = 0,
FILTER_OP_RETURN,
/* 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,
/* 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,
/* 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,
/* 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,
/* 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,
/* 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,
/* logical */
FILTER_OP_AND,
FILTER_OP_OR,
/* 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,
/* load immediate from operand */
FILTER_OP_LOAD_STRING,
FILTER_OP_LOAD_S64,
FILTER_OP_LOAD_DOUBLE,
/* cast */
FILTER_OP_CAST_TO_S64,
FILTER_OP_CAST_DOUBLE_TO_S64,
FILTER_OP_CAST_NOP,
/* 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,
NR_FILTER_OPS,
};
typedef uint8_t filter_opcode_t;
struct load_op {
filter_opcode_t op;
char data[0];
/* data to load. Size known by enum filter_opcode and null-term char. */
} __attribute__((packed));
struct binary_op {
filter_opcode_t op;
} __attribute__((packed));
struct unary_op {
filter_opcode_t op;
} __attribute__((packed));
/* skip_offset is absolute from start of bytecode */
struct logical_op {
filter_opcode_t op;
uint16_t skip_offset; /* bytecode insn, if skip second test */
} __attribute__((packed));
struct cast_op {
filter_opcode_t op;
} __attribute__((packed));
struct return_op {
filter_opcode_t op;
} __attribute__((packed));
#endif /* _FILTER_BYTECODE_H */