[lttng-tools.git] / src / lib / lttng-ctl / filter-bytecode.h

#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 "filter-ast.h"
#include "../../common/sessiond-comm/sessiond-comm.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,

	/* 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 */
	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_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,

	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));

struct lttng_filter_bytecode_alloc {
	uint16_t alloc_len;
	struct lttng_filter_bytecode b;
};

static inline
unsigned int bytecode_get_len(struct lttng_filter_bytecode *bytecode)
{
	return bytecode->len;
}

#endif /* _FILTER_BYTECODE_H */
Commit	Line	Data
953192ba MD	1	#ifndef _FILTER_BYTECODE_H
	2	#define _FILTER_BYTECODE_H
	3
	4	/*
	5	* filter-bytecode.h
	6	*
	7	* LTTng filter bytecode
	8	*
	9	* Copyright 2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	10	*
	11	* This library is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU Lesser General Public License, version 2.1 only,
	13	* as published by the Free Software Foundation.
	14	*
	15	* This library is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	18	* Lesser General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU Lesser General Public License
	21	* along with this library; if not, write to the Free Software Foundation,
	22	* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	23	*/
	24
	25	#include "filter-ast.h"
53a80697	26	#include "../../common/sessiond-comm/sessiond-comm.h"
953192ba MD	27
	28	/*
	29	* offsets are absolute from start of bytecode.
	30	*/
	31
953192ba MD	32	struct field_ref {
	33	/* Initially, symbol offset. After link, field offset. */
	34	uint16_t offset;
953192ba MD	35	} __attribute__((packed));
	36
	37	struct literal_numeric {
	38	int64_t v;
	39	} __attribute__((packed));
	40
e90d8561 MD	41	struct literal_double {
	42	double v;
	43	} __attribute__((packed));
	44
953192ba MD	45	struct literal_string {
	46	char string[0];
	47	} __attribute__((packed));
	48
	49	enum filter_op {
	50	FILTER_OP_UNKNOWN = 0,
	51
	52	FILTER_OP_RETURN,
	53
	54	/* binary */
	55	FILTER_OP_MUL,
	56	FILTER_OP_DIV,
	57	FILTER_OP_MOD,
	58	FILTER_OP_PLUS,
	59	FILTER_OP_MINUS,
	60	FILTER_OP_RSHIFT,
	61	FILTER_OP_LSHIFT,
	62	FILTER_OP_BIN_AND,
	63	FILTER_OP_BIN_OR,
	64	FILTER_OP_BIN_XOR,
78228322 MD	65
78228322 MD	66	/* binary comparators */
953192ba MD	67	FILTER_OP_EQ,
	68	FILTER_OP_NE,
	69	FILTER_OP_GT,
	70	FILTER_OP_LT,
	71	FILTER_OP_GE,
	72	FILTER_OP_LE,
	73
78228322 MD	74	/* string binary comparator */
	75	FILTER_OP_EQ_STRING,
	76	FILTER_OP_NE_STRING,
	77	FILTER_OP_GT_STRING,
	78	FILTER_OP_LT_STRING,
	79	FILTER_OP_GE_STRING,
	80	FILTER_OP_LE_STRING,
	81
	82	/* s64 binary comparator */
	83	FILTER_OP_EQ_S64,
	84	FILTER_OP_NE_S64,
	85	FILTER_OP_GT_S64,
	86	FILTER_OP_LT_S64,
	87	FILTER_OP_GE_S64,
	88	FILTER_OP_LE_S64,
	89
	90	/* double binary comparator */
	91	FILTER_OP_EQ_DOUBLE,
	92	FILTER_OP_NE_DOUBLE,
	93	FILTER_OP_GT_DOUBLE,
	94	FILTER_OP_LT_DOUBLE,
	95	FILTER_OP_GE_DOUBLE,
	96	FILTER_OP_LE_DOUBLE,
	97
953192ba MD	98	/* unary */
	99	FILTER_OP_UNARY_PLUS,
	100	FILTER_OP_UNARY_MINUS,
	101	FILTER_OP_UNARY_NOT,
c473659a MD	102	FILTER_OP_UNARY_PLUS_S64,
	103	FILTER_OP_UNARY_MINUS_S64,
	104	FILTER_OP_UNARY_NOT_S64,
	105	FILTER_OP_UNARY_PLUS_DOUBLE,
	106	FILTER_OP_UNARY_MINUS_DOUBLE,
	107	FILTER_OP_UNARY_NOT_DOUBLE,
953192ba MD	108
	109	/* logical */
	110	FILTER_OP_AND,
	111	FILTER_OP_OR,
	112
	113	/* load */
	114	FILTER_OP_LOAD_FIELD_REF,
65775683 MD	115	FILTER_OP_LOAD_FIELD_REF_STRING,
	116	FILTER_OP_LOAD_FIELD_REF_SEQUENCE,
	117	FILTER_OP_LOAD_FIELD_REF_S64,
	118	FILTER_OP_LOAD_FIELD_REF_DOUBLE,
	119
953192ba MD	120	FILTER_OP_LOAD_STRING,
953192ba MD	121	FILTER_OP_LOAD_S64,
e90d8561	122	FILTER_OP_LOAD_DOUBLE,
953192ba	123
8cf9540a MD	124	/* cast */
	125	FILTER_OP_CAST_TO_S64,
	126	FILTER_OP_CAST_DOUBLE_TO_S64,
	127	FILTER_OP_CAST_NOP,
	128
953192ba MD	129	NR_FILTER_OPS,
	130	};
	131
	132	typedef uint8_t filter_opcode_t;
	133
	134	struct load_op {
	135	filter_opcode_t op;
953192ba MD	136	char data[0];
	137	/* data to load. Size known by enum filter_opcode and null-term char. */
	138	} __attribute__((packed));
	139
	140	struct binary_op {
	141	filter_opcode_t op;
	142	} __attribute__((packed));
	143
	144	struct unary_op {
	145	filter_opcode_t op;
953192ba MD	146	} __attribute__((packed));
	147
	148	/* skip_offset is absolute from start of bytecode */
	149	struct logical_op {
	150	filter_opcode_t op;
	151	uint16_t skip_offset; /* bytecode insn, if skip second test */
	152	} __attribute__((packed));
	153
8cf9540a MD	154	struct cast_op {
8cf9540a MD	155	filter_opcode_t op;
8cf9540a MD	156	} __attribute__((packed));
8cf9540a MD	157
953192ba MD	158	struct return_op {
	159	filter_opcode_t op;
	160	} __attribute__((packed));
	161
53a80697	162	struct lttng_filter_bytecode_alloc {
953192ba	163	uint16_t alloc_len;
53a80697	164	struct lttng_filter_bytecode b;
953192ba MD	165	};
	166
	167	static inline
53a80697	168	unsigned int bytecode_get_len(struct lttng_filter_bytecode *bytecode)
953192ba MD	169	{
	170	return bytecode->len;
	171	}
	172
	173	#endif /* _FILTER_BYTECODE_H */