+/*
+ * Copyright 2020 EfficiOS, Inc.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#ifndef LTTNG_COMMON_BYTECODE_H
+#define LTTNG_COMMON_BYTECODE_H
+
+#include <stdint.h>
+
+#include "common/macros.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;
+} LTTNG_PACKED;
+
+struct get_symbol {
+ /* Symbol offset. */
+ uint16_t offset;
+} LTTNG_PACKED;
+
+struct get_index_u16 {
+ uint16_t index;
+} LTTNG_PACKED;
+
+struct get_index_u64 {
+ uint64_t index;
+} LTTNG_PACKED;
+
+struct literal_numeric {
+ int64_t v;
+} LTTNG_PACKED;
+
+struct literal_double {
+ double v;
+} LTTNG_PACKED;
+
+struct literal_string {
+ char string[0];
+} LTTNG_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;
+
+ /*
+ * data to load. Size known by enum bytecode_opcode_t and null-term
+ * char.
+ */
+ char data[0];
+} LTTNG_PACKED;
+
+struct binary_op {
+ bytecode_opcode_t op;
+} LTTNG_PACKED;
+
+struct unary_op {
+ bytecode_opcode_t op;
+} LTTNG_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 */
+} LTTNG_PACKED;
+
+struct cast_op {
+ bytecode_opcode_t op;
+} LTTNG_PACKED;
+
+struct return_op {
+ bytecode_opcode_t op;
+} LTTNG_PACKED;
+
+struct lttng_bytecode_alloc {
+ uint32_t alloc_len;
+ struct lttng_bytecode b;
+};
+
+LTTNG_HIDDEN int bytecode_init(struct lttng_bytecode_alloc **fb);
+LTTNG_HIDDEN int32_t bytecode_reserve(struct lttng_bytecode_alloc **fb,
+ uint32_t align, uint32_t len);
+LTTNG_HIDDEN int bytecode_push(struct lttng_bytecode_alloc **fb,
+ const void *data, uint32_t align, uint32_t len);
+LTTNG_HIDDEN int bytecode_push_logical(struct lttng_bytecode_alloc **fb,
+ struct logical_op *data, uint32_t align, uint32_t len,
+ uint16_t *skip_offset);
+LTTNG_HIDDEN int bytecode_push_get_payload_root(
+ struct lttng_bytecode_alloc **bytecode);
+LTTNG_HIDDEN int bytecode_push_get_context_root(
+ struct lttng_bytecode_alloc **bytecode);
+LTTNG_HIDDEN int bytecode_push_get_app_context_root(
+ struct lttng_bytecode_alloc **bytecode);
+LTTNG_HIDDEN int bytecode_push_get_index_u64(
+ struct lttng_bytecode_alloc **bytecode, uint64_t index);
+LTTNG_HIDDEN int bytecode_push_get_symbol(
+ struct lttng_bytecode_alloc **bytecode,
+ struct lttng_bytecode_alloc **bytecode_reloc,
+ const char *symbol);
+LTTNG_HIDDEN struct lttng_bytecode *bytecode_copy(
+ const struct lttng_bytecode *orig_f);
+
+static inline
+unsigned int bytecode_get_len(struct lttng_bytecode *bytecode)
+{
+ return bytecode->len;
+}
+
+#endif /* LTTNG_COMMON_BYTECODE_H */
projects / lttng-tools.git / blobdiff