X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Flib%2Flttng-ctl%2Ffilter%2Ffilter-bytecode.h;fp=src%2Flib%2Flttng-ctl%2Ffilter%2Ffilter-bytecode.h;h=5d2559dd66586e06449ecf11471d4fd0a426dfe8;hp=0000000000000000000000000000000000000000;hb=d00c599e39ae45ec7c8e12e6bac6b5e58f08f817;hpb=32dd26fbc3c69fe677a7917535e10ace066e674c

diff --git a/src/lib/lttng-ctl/filter/filter-bytecode.h b/src/lib/lttng-ctl/filter/filter-bytecode.h
new file mode 100644
index 000000000..5d2559dd6
--- /dev/null
+++ b/src/lib/lttng-ctl/filter/filter-bytecode.h
@@ -0,0 +1,189 @@
+#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 <common/sessiond-comm/sessiond-comm.h>
+
+#include "filter-ast.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 */
+	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 */