X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=filter-bytecode.h;fp=filter-bytecode.h;h=eb0d549cbd169c93da07396a0d9ce371516c8e54;hb=07dfc1d0e4b093ad02682499a702dc11e54e8302;hp=0000000000000000000000000000000000000000;hpb=4ecb5ad551c82311205afbcda492739a08d6b132;p=lttng-modules.git

diff --git a/filter-bytecode.h b/filter-bytecode.h
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+++ b/filter-bytecode.h
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+#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
+ */
+
+/*
+ * 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 */