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jerryscript/jerry-core/parser/js/byte-code.h
Zoltan Herczeg b9560b7c70 Rework ecma collection. (#2153) 
Greatly simplify the iterator part and make it compatible with 32 bit cpointers.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
2018-01-10 15:55:56 +01:00

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/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef BYTE_CODE_H
#define BYTE_CODE_H
#include "ecma-globals.h"
/** \addtogroup parser Parser
* @{
*
* \addtogroup jsparser JavaScript
* @{
*
* \addtogroup jsparser_bytecode Bytecode
* @{
*/
/**
* Compact byte code (CBC) is a byte code representation
* of EcmaScript which is designed for low memory
* environments. Most opcodes are only one or sometimes
* two byte long so the CBC provides a small binary size.
*
* The execution engine of CBC is a stack machine, where
* the maximum stack size is known in advance for each
* function.
*/
/**
* Byte code flags. Only the lower 5 bit can be used
* since the stack change is encoded in the upper
* three bits for each instruction between -4 and 3
* (except for call / construct opcodes).
*/
#define CBC_STACK_ADJUST_BASE 4
#define CBC_STACK_ADJUST_SHIFT 5
#define CBC_STACK_ADJUST_VALUE(value) \
(((value) >> CBC_STACK_ADJUST_SHIFT) - CBC_STACK_ADJUST_BASE)
#define CBC_NO_FLAG 0x00u
#define CBC_HAS_LITERAL_ARG 0x01u
#define CBC_HAS_LITERAL_ARG2 0x02u
#define CBC_HAS_BYTE_ARG 0x04u
#define CBC_HAS_BRANCH_ARG 0x08u
/* These flags are shared */
#define CBC_FORWARD_BRANCH_ARG 0x10u
#define CBC_POP_STACK_BYTE_ARG 0x10u
#define CBC_ARG_TYPES (CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2 | CBC_HAS_BYTE_ARG | CBC_HAS_BRANCH_ARG)
#define CBC_HAS_POP_STACK_BYTE_ARG (CBC_HAS_BYTE_ARG | CBC_POP_STACK_BYTE_ARG)
/* Debug macro. */
#define CBC_ARGS_EQ(op, types) \
((cbc_flags[op] & CBC_ARG_TYPES) == (types))
/* Debug macro. */
#define CBC_SAME_ARGS(op1, op2) \
((cbc_flags[op1] & CBC_ARG_TYPES) == (cbc_flags[op2] & CBC_ARG_TYPES))
#define CBC_UNARY_OPERATION(name, group) \
CBC_OPCODE (name, CBC_NO_FLAG, 0, \
(VM_OC_ ## group) | VM_OC_GET_STACK | VM_OC_PUT_STACK) \
CBC_OPCODE (name ## _LITERAL, CBC_HAS_LITERAL_ARG, 1, \
(VM_OC_ ## group) | VM_OC_GET_LITERAL | VM_OC_PUT_STACK)
#define CBC_BINARY_OPERATION(name, group) \
CBC_OPCODE (name, CBC_NO_FLAG, -1, \
(VM_OC_ ## group) | VM_OC_GET_STACK_STACK | VM_OC_PUT_STACK) \
CBC_OPCODE (name ## _RIGHT_LITERAL, CBC_HAS_LITERAL_ARG, 0, \
(VM_OC_ ## group) | VM_OC_GET_STACK_LITERAL | VM_OC_PUT_STACK) \
CBC_OPCODE (name ## _TWO_LITERALS, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 1, \
(VM_OC_ ## group) | VM_OC_GET_LITERAL_LITERAL | VM_OC_PUT_STACK)
#define CBC_UNARY_LVALUE_OPERATION(name, group) \
CBC_OPCODE (name, CBC_NO_FLAG, -2, \
(VM_OC_PROP_ ## group) | VM_OC_GET_STACK_STACK | VM_OC_PUT_REFERENCE) \
CBC_OPCODE (name ## _PUSH_RESULT, CBC_NO_FLAG, -1, \
(VM_OC_PROP_ ## group) | VM_OC_GET_STACK_STACK | VM_OC_PUT_REFERENCE | VM_OC_PUT_STACK) \
CBC_OPCODE (name ## _BLOCK, CBC_NO_FLAG, -2, \
(VM_OC_PROP_ ## group) | VM_OC_GET_STACK_STACK | VM_OC_PUT_REFERENCE | VM_OC_PUT_BLOCK) \
CBC_OPCODE (name ## _IDENT, CBC_HAS_LITERAL_ARG, 0, \
(VM_OC_ ## group) | VM_OC_GET_LITERAL | VM_OC_PUT_IDENT) \
CBC_OPCODE (name ## _IDENT_PUSH_RESULT, CBC_HAS_LITERAL_ARG, 1, \
(VM_OC_ ## group) | VM_OC_GET_LITERAL | VM_OC_PUT_IDENT | VM_OC_PUT_STACK) \
CBC_OPCODE (name ## _IDENT_BLOCK, CBC_HAS_LITERAL_ARG, 0, \
(VM_OC_ ## group) | VM_OC_GET_LITERAL | VM_OC_PUT_IDENT | VM_OC_PUT_BLOCK)
#define CBC_BINARY_LVALUE_OPERATION(name, group) \
CBC_OPCODE (name, CBC_NO_FLAG, -4, \
(VM_OC_ ## group) | VM_OC_GET_STACK_STACK | VM_OC_PUT_REFERENCE) \
CBC_OPCODE (name ## _LITERAL, CBC_HAS_LITERAL_ARG, -3, \
(VM_OC_ ## group) | VM_OC_GET_STACK_LITERAL | VM_OC_PUT_REFERENCE) \
#define CBC_EXT_BINARY_LVALUE_OPERATION(name, group) \
CBC_OPCODE (name ## _PUSH_RESULT, CBC_NO_FLAG, -3, \
(VM_OC_ ## group) | VM_OC_GET_STACK_STACK | VM_OC_PUT_REFERENCE | VM_OC_PUT_STACK) \
CBC_OPCODE (name ## _LITERAL_PUSH_RESULT, CBC_HAS_LITERAL_ARG, -2, \
(VM_OC_ ## group) | VM_OC_GET_STACK_LITERAL | VM_OC_PUT_REFERENCE | VM_OC_PUT_STACK) \
#define CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION(name, group) \
CBC_OPCODE (name ## _BLOCK, CBC_NO_FLAG, -4, \
(VM_OC_ ## group) | VM_OC_GET_STACK_STACK | VM_OC_PUT_REFERENCE | VM_OC_PUT_BLOCK) \
CBC_OPCODE (name ## _LITERAL_BLOCK, CBC_HAS_LITERAL_ARG, -3, \
(VM_OC_ ## group) | VM_OC_GET_STACK_LITERAL | VM_OC_PUT_REFERENCE | VM_OC_PUT_BLOCK) \
#define CBC_UNARY_LVALUE_WITH_IDENT 3
#define CBC_BINARY_LVALUE_WITH_LITERAL 1
#define CBC_BINARY_WITH_LITERAL 1
#define CBC_BINARY_WITH_TWO_LITERALS 2
/**
* Several opcodes (mostly call and assignment opcodes) have
* two forms: one which does not push a return value onto
* the stack, and another which does. The reasion is that
* the return value of these opcodes are often not used
* and the first form provides smaller byte code.
*
* The following rules must be kept by the code generator:
* - only the opcode without return value can be emitted
* by the code generator
* - the first form can be converted to the second form
* by adding 1 to the opcode
* - after the conversion the opcode must be immediately
* flushed, so no further changes are possible
*
* Hence CBC_NO_RESULT_OPERATION (context_p->last_cbc_opcode)
* cannot be true for an opcode which has a result
*/
#define CBC_NO_RESULT_OPERATION(opcode) \
((opcode) >= CBC_PRE_INCR && (opcode) < CBC_END)
#define CBC_NO_RESULT_BLOCK(opcode) \
((opcode) >= CBC_PRE_INCR && (opcode) < CBC_ASSIGN_ADD)
#define CBC_NO_RESULT_COMPOUND_ASSIGMENT(opcode) \
((opcode) >= CBC_ASSIGN_ADD && (opcode) < CBC_END)
/**
* Branch instructions are organized in group of 8 opcodes.
* - 1st opcode: unused, can be used for other purpose
* - 2nd opcode: forward branch with 1 byte offset
* - 3rd opcode: forward branch with 2 byte offset
* - 4th opcode: forward branch with 3 byte offset
* - 5th opcode: unused, can be used for other purpose
* - 6th opcode: backward branch with 1 byte offset
* - 7th opcode: backward branch with 2 byte offset
* - 8th opcode: backward branch with 3 byte offset
*
* Reasons:
* The branch_opcode & 0x3 tells the length in bytes of the offset
* If branch offset & 0x4 == 0, it is a forward branch. Otherwise
* it is backward.
*
* The offset bytes are encoded in higher to lower order.
*/
#define CBC_FORWARD_BRANCH(name, stack, vm_oc) \
CBC_OPCODE (name, CBC_HAS_BRANCH_ARG | CBC_FORWARD_BRANCH_ARG, stack, \
(vm_oc) | VM_OC_GET_BRANCH) \
CBC_OPCODE (name ## _2, CBC_HAS_BRANCH_ARG | CBC_FORWARD_BRANCH_ARG, stack, \
(vm_oc) | VM_OC_GET_BRANCH) \
CBC_OPCODE (name ## _3, CBC_HAS_BRANCH_ARG | CBC_FORWARD_BRANCH_ARG, stack, \
(vm_oc) | VM_OC_GET_BRANCH)
#define CBC_BACKWARD_BRANCH(name, stack, vm_oc) \
CBC_OPCODE (name, CBC_HAS_BRANCH_ARG, stack, \
(vm_oc) | VM_OC_GET_BRANCH | VM_OC_BACKWARD_BRANCH) \
CBC_OPCODE (name ## _2, CBC_HAS_BRANCH_ARG, stack, \
(vm_oc) | VM_OC_GET_BRANCH | VM_OC_BACKWARD_BRANCH) \
CBC_OPCODE (name ## _3, CBC_HAS_BRANCH_ARG, stack, \
(vm_oc) | VM_OC_GET_BRANCH | VM_OC_BACKWARD_BRANCH)
#define CBC_BRANCH_OFFSET_LENGTH(opcode) \
((opcode) & 0x3)
#define CBC_BRANCH_IS_BACKWARD(flags) \
(!((flags) & CBC_FORWARD_BRANCH_ARG))
#define CBC_BRANCH_IS_FORWARD(flags) \
((flags) & CBC_FORWARD_BRANCH_ARG)
/* Stack consumption of opcodes with context. */
/* PARSER_FOR_IN_CONTEXT_STACK_ALLOCATION must be <= 4 */
#define PARSER_FOR_IN_CONTEXT_STACK_ALLOCATION 4
/* PARSER_WITH_CONTEXT_STACK_ALLOCATION must be <= 4 */
#define PARSER_WITH_CONTEXT_STACK_ALLOCATION 2
/* PARSER_TRY_CONTEXT_STACK_ALLOCATION must be <= 3 */
#define PARSER_TRY_CONTEXT_STACK_ALLOCATION 2
/**
* Opcode definitions.
*/
#define CBC_OPCODE_LIST \
/* Branch opcodes first. Some other opcodes are mixed. */ \
CBC_OPCODE (CBC_EXT_OPCODE, CBC_NO_FLAG, 0, \
VM_OC_NONE) \
CBC_FORWARD_BRANCH (CBC_JUMP_FORWARD, 0, \
VM_OC_JUMP) \
CBC_OPCODE (CBC_POP, CBC_NO_FLAG, -1, \
VM_OC_POP) \
CBC_BACKWARD_BRANCH (CBC_JUMP_BACKWARD, 0, \
VM_OC_JUMP) \
CBC_OPCODE (CBC_POP_BLOCK, CBC_NO_FLAG, -1, \
VM_OC_POP_BLOCK | VM_OC_PUT_BLOCK) \
CBC_FORWARD_BRANCH (CBC_BRANCH_IF_TRUE_FORWARD, -1, \
VM_OC_BRANCH_IF_TRUE) \
CBC_OPCODE (CBC_THROW, CBC_NO_FLAG, -1, \
VM_OC_THROW | VM_OC_GET_STACK) \
CBC_BACKWARD_BRANCH (CBC_BRANCH_IF_TRUE_BACKWARD, -1, \
VM_OC_BRANCH_IF_TRUE) \
CBC_OPCODE (CBC_CONTEXT_END, CBC_NO_FLAG, 0, \
VM_OC_CONTEXT_END) \
CBC_FORWARD_BRANCH (CBC_BRANCH_IF_FALSE_FORWARD, -1, \
VM_OC_BRANCH_IF_FALSE) \
CBC_OPCODE (CBC_CREATE_OBJECT, CBC_NO_FLAG, 1, \
VM_OC_PUSH_OBJECT | VM_OC_PUT_STACK) \
CBC_BACKWARD_BRANCH (CBC_BRANCH_IF_FALSE_BACKWARD, -1, \
VM_OC_BRANCH_IF_FALSE) \
CBC_OPCODE (CBC_SET_PROPERTY, CBC_HAS_LITERAL_ARG, -1, \
VM_OC_SET_PROPERTY | VM_OC_GET_STACK_LITERAL) \
CBC_FORWARD_BRANCH (CBC_JUMP_FORWARD_EXIT_CONTEXT, 0, \
VM_OC_JUMP_AND_EXIT_CONTEXT) \
CBC_OPCODE (CBC_CREATE_ARRAY, CBC_NO_FLAG, 1, \
VM_OC_PUSH_ARRAY | VM_OC_PUT_STACK) \
CBC_FORWARD_BRANCH (CBC_BRANCH_IF_LOGICAL_TRUE, -1, \
VM_OC_BRANCH_IF_LOGICAL_TRUE) \
CBC_OPCODE (CBC_ARRAY_APPEND, CBC_HAS_POP_STACK_BYTE_ARG, 0, \
VM_OC_APPEND_ARRAY) \
CBC_FORWARD_BRANCH (CBC_BRANCH_IF_LOGICAL_FALSE, -1, \
VM_OC_BRANCH_IF_LOGICAL_FALSE) \
CBC_OPCODE (CBC_PUSH_ELISION, CBC_NO_FLAG, 1, \
VM_OC_PUSH_ELISON | VM_OC_PUT_STACK) \
CBC_FORWARD_BRANCH (CBC_BRANCH_IF_STRICT_EQUAL, -1, \
VM_OC_BRANCH_IF_STRICT_EQUAL) \
\
/* Basic opcodes. */ \
CBC_OPCODE (CBC_PUSH_LITERAL, CBC_HAS_LITERAL_ARG, 1, \
VM_OC_PUSH | VM_OC_GET_LITERAL) \
CBC_OPCODE (CBC_PUSH_TWO_LITERALS, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 2, \
VM_OC_PUSH_TWO | VM_OC_GET_LITERAL_LITERAL) \
CBC_OPCODE (CBC_PUSH_THREE_LITERALS, CBC_HAS_LITERAL_ARG2, 3, \
VM_OC_PUSH_THREE | VM_OC_GET_LITERAL_LITERAL) \
CBC_OPCODE (CBC_PUSH_UNDEFINED, CBC_NO_FLAG, 1, \
VM_OC_PUSH_UNDEFINED | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_TRUE, CBC_NO_FLAG, 1, \
VM_OC_PUSH_TRUE | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_FALSE, CBC_NO_FLAG, 1, \
VM_OC_PUSH_FALSE | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_NULL, CBC_NO_FLAG, 1, \
VM_OC_PUSH_NULL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_THIS, CBC_NO_FLAG, 1, \
VM_OC_PUSH_THIS | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_THIS_LITERAL, CBC_HAS_LITERAL_ARG, 2, \
VM_OC_PUSH_TWO | VM_OC_GET_THIS_LITERAL) \
CBC_OPCODE (CBC_PUSH_NUMBER_0, CBC_NO_FLAG, 1, \
VM_OC_PUSH_NUMBER_0 | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_NUMBER_POS_BYTE, CBC_HAS_BYTE_ARG, 1, \
VM_OC_PUSH_NUMBER_POS_BYTE | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_NUMBER_NEG_BYTE, CBC_HAS_BYTE_ARG, 1, \
VM_OC_PUSH_NUMBER_NEG_BYTE | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_PROP, CBC_NO_FLAG, -1, \
VM_OC_PROP_GET | VM_OC_GET_STACK_STACK | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_PROP_LITERAL, CBC_HAS_LITERAL_ARG, 0, \
VM_OC_PROP_GET | VM_OC_GET_STACK_LITERAL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_PROP_LITERAL_LITERAL, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 1, \
VM_OC_PROP_GET | VM_OC_GET_LITERAL_LITERAL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_PROP_THIS_LITERAL, CBC_HAS_LITERAL_ARG, 1, \
VM_OC_PROP_GET | VM_OC_GET_THIS_LITERAL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_IDENT_REFERENCE, CBC_HAS_LITERAL_ARG, 3, \
VM_OC_IDENT_REFERENCE | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_PROP_REFERENCE, CBC_NO_FLAG, 1, \
VM_OC_PROP_REFERENCE | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_PROP_LITERAL_REFERENCE, CBC_HAS_LITERAL_ARG, 2, \
VM_OC_PROP_REFERENCE | VM_OC_GET_LITERAL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_PROP_LITERAL_LITERAL_REFERENCE, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 3, \
VM_OC_PROP_REFERENCE | VM_OC_GET_LITERAL_LITERAL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_PUSH_PROP_THIS_LITERAL_REFERENCE, CBC_HAS_LITERAL_ARG, 3, \
VM_OC_PROP_REFERENCE | VM_OC_GET_THIS_LITERAL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_NEW, CBC_HAS_POP_STACK_BYTE_ARG, 0, \
VM_OC_NEW | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_NEW0, CBC_NO_FLAG, 0, \
VM_OC_NEW | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_NEW1, CBC_NO_FLAG, -1, \
VM_OC_NEW | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_EVAL, CBC_NO_FLAG, 0, \
VM_OC_EVAL) \
CBC_OPCODE (CBC_DEFINE_VARS, CBC_HAS_LITERAL_ARG, 0, \
VM_OC_NONE) \
CBC_OPCODE (CBC_INITIALIZE_VAR, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 0, \
VM_OC_NONE) \
CBC_OPCODE (CBC_INITIALIZE_VARS, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 0, \
VM_OC_NONE) \
CBC_OPCODE (CBC_SET_BYTECODE_PTR, CBC_NO_FLAG, 0, \
VM_OC_NONE) \
CBC_OPCODE (CBC_RETURN, CBC_NO_FLAG, -1, \
VM_OC_RET | VM_OC_GET_STACK) \
CBC_OPCODE (CBC_RETURN_WITH_BLOCK, CBC_NO_FLAG, 0, \
VM_OC_RET) \
CBC_OPCODE (CBC_RETURN_WITH_LITERAL, CBC_HAS_LITERAL_ARG, 0, \
VM_OC_RET | VM_OC_GET_LITERAL) \
CBC_OPCODE (CBC_BREAKPOINT_ENABLED, CBC_NO_FLAG, 0, \
VM_OC_BREAKPOINT_ENABLED) \
CBC_OPCODE (CBC_BREAKPOINT_DISABLED, CBC_NO_FLAG, 0, \
VM_OC_BREAKPOINT_DISABLED) \
\
/* Unary opcodes. */ \
CBC_UNARY_OPERATION (CBC_PLUS, \
PLUS) \
CBC_UNARY_OPERATION (CBC_NEGATE, \
MINUS) \
CBC_UNARY_OPERATION (CBC_LOGICAL_NOT, \
NOT) \
CBC_UNARY_OPERATION (CBC_BIT_NOT, \
BIT_NOT) \
CBC_UNARY_OPERATION (CBC_VOID, \
VOID) \
CBC_OPCODE (CBC_TYPEOF, CBC_NO_FLAG, 0, \
VM_OC_TYPEOF | VM_OC_GET_STACK | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_TYPEOF_IDENT, CBC_HAS_LITERAL_ARG, 1, \
VM_OC_TYPEOF_IDENT | VM_OC_PUT_STACK) \
\
/* Binary opcodes. */ \
CBC_BINARY_OPERATION (CBC_BIT_OR, \
BIT_OR) \
CBC_BINARY_OPERATION (CBC_BIT_XOR, \
BIT_XOR) \
CBC_BINARY_OPERATION (CBC_BIT_AND, \
BIT_AND) \
CBC_BINARY_OPERATION (CBC_EQUAL, \
EQUAL) \
CBC_BINARY_OPERATION (CBC_NOT_EQUAL, \
NOT_EQUAL) \
CBC_BINARY_OPERATION (CBC_STRICT_EQUAL, \
STRICT_EQUAL) \
CBC_BINARY_OPERATION (CBC_STRICT_NOT_EQUAL, \
STRICT_NOT_EQUAL) \
CBC_BINARY_OPERATION (CBC_LESS, \
LESS) \
CBC_BINARY_OPERATION (CBC_GREATER, \
GREATER) \
CBC_BINARY_OPERATION (CBC_LESS_EQUAL, \
LESS_EQUAL) \
CBC_BINARY_OPERATION (CBC_GREATER_EQUAL, \
GREATER_EQUAL) \
CBC_BINARY_OPERATION (CBC_IN, \
IN) \
CBC_BINARY_OPERATION (CBC_INSTANCEOF, \
INSTANCEOF) \
CBC_BINARY_OPERATION (CBC_LEFT_SHIFT, \
LEFT_SHIFT) \
CBC_BINARY_OPERATION (CBC_RIGHT_SHIFT, \
RIGHT_SHIFT) \
CBC_BINARY_OPERATION (CBC_UNS_RIGHT_SHIFT, \
UNS_RIGHT_SHIFT) \
CBC_BINARY_OPERATION (CBC_ADD, \
ADD) \
CBC_BINARY_OPERATION (CBC_SUBTRACT, \
SUB) \
CBC_BINARY_OPERATION (CBC_MULTIPLY, \
MUL) \
CBC_BINARY_OPERATION (CBC_DIVIDE, \
DIV) \
CBC_BINARY_OPERATION (CBC_MODULO, \
MOD) \
\
/* Unary lvalue opcodes. */ \
CBC_OPCODE (CBC_DELETE_PUSH_RESULT, CBC_NO_FLAG, -1, \
VM_OC_PROP_DELETE | VM_OC_GET_STACK_STACK | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_DELETE_IDENT_PUSH_RESULT, CBC_HAS_LITERAL_ARG, 1, \
VM_OC_DELETE | VM_OC_PUT_STACK) \
CBC_UNARY_LVALUE_OPERATION (CBC_PRE_INCR, \
PRE_INCR) \
CBC_UNARY_LVALUE_OPERATION (CBC_PRE_DECR, \
PRE_DECR) \
CBC_UNARY_LVALUE_OPERATION (CBC_POST_INCR, \
POST_INCR) \
CBC_UNARY_LVALUE_OPERATION (CBC_POST_DECR, \
POST_DECR) \
\
/* Call opcodes. */ \
CBC_OPCODE (CBC_CALL, CBC_HAS_POP_STACK_BYTE_ARG, -1, \
VM_OC_CALL) \
CBC_OPCODE (CBC_CALL_PUSH_RESULT, CBC_HAS_POP_STACK_BYTE_ARG, 0, \
VM_OC_CALL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_CALL_BLOCK, CBC_HAS_POP_STACK_BYTE_ARG, -1, \
VM_OC_CALL | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_CALL_PROP, CBC_HAS_POP_STACK_BYTE_ARG, -3, \
VM_OC_CALL) \
CBC_OPCODE (CBC_CALL_PROP_PUSH_RESULT, CBC_HAS_POP_STACK_BYTE_ARG, -2, \
VM_OC_CALL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_CALL_PROP_BLOCK, CBC_HAS_POP_STACK_BYTE_ARG, -3, \
VM_OC_CALL | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_CALL0, CBC_NO_FLAG, -1, \
VM_OC_CALL) \
CBC_OPCODE (CBC_CALL0_PUSH_RESULT, CBC_NO_FLAG, 0, \
VM_OC_CALL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_CALL0_BLOCK, CBC_NO_FLAG, -1, \
VM_OC_CALL | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_CALL0_PROP, CBC_NO_FLAG, -3, \
VM_OC_CALL) \
CBC_OPCODE (CBC_CALL0_PROP_PUSH_RESULT, CBC_NO_FLAG, -2, \
VM_OC_CALL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_CALL0_PROP_BLOCK, CBC_NO_FLAG, -3, \
VM_OC_CALL | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_CALL1, CBC_NO_FLAG, -2, \
VM_OC_CALL) \
CBC_OPCODE (CBC_CALL1_PUSH_RESULT, CBC_NO_FLAG, -1, \
VM_OC_CALL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_CALL1_BLOCK, CBC_NO_FLAG, -2, \
VM_OC_CALL | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_CALL1_PROP, CBC_NO_FLAG, -4, \
VM_OC_CALL) \
CBC_OPCODE (CBC_CALL1_PROP_PUSH_RESULT, CBC_NO_FLAG, -3, \
VM_OC_CALL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_CALL1_PROP_BLOCK, CBC_NO_FLAG, -4, \
VM_OC_CALL | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_CALL2, CBC_NO_FLAG, -3, \
VM_OC_CALL) \
CBC_OPCODE (CBC_CALL2_PUSH_RESULT, CBC_NO_FLAG, -2, \
VM_OC_CALL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_CALL2_BLOCK, CBC_NO_FLAG, -3, \
VM_OC_CALL | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_CALL2_PROP, CBC_NO_FLAG, -4, \
VM_OC_CALL) \
CBC_OPCODE (CBC_CALL2_PROP_PUSH_RESULT, CBC_NO_FLAG, -3, \
VM_OC_CALL | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_CALL2_PROP_BLOCK, CBC_NO_FLAG, -4, \
VM_OC_CALL | VM_OC_PUT_BLOCK) \
\
/* Binary assignment opcodes. */ \
CBC_OPCODE (CBC_ASSIGN, CBC_NO_FLAG, -3, \
VM_OC_ASSIGN | VM_OC_GET_STACK | VM_OC_PUT_REFERENCE) \
CBC_OPCODE (CBC_ASSIGN_PUSH_RESULT, CBC_NO_FLAG, -2, \
VM_OC_ASSIGN | VM_OC_GET_STACK | VM_OC_PUT_REFERENCE | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_ASSIGN_BLOCK, CBC_NO_FLAG, -3, \
VM_OC_ASSIGN | VM_OC_GET_STACK | VM_OC_PUT_REFERENCE | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_ASSIGN_SET_IDENT, CBC_HAS_LITERAL_ARG, -1, \
VM_OC_ASSIGN | VM_OC_GET_STACK | VM_OC_PUT_IDENT) \
CBC_OPCODE (CBC_ASSIGN_SET_IDENT_PUSH_RESULT, CBC_HAS_LITERAL_ARG, 0, \
VM_OC_ASSIGN | VM_OC_GET_STACK | VM_OC_PUT_IDENT | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_ASSIGN_SET_IDENT_BLOCK, CBC_HAS_LITERAL_ARG, -1, \
VM_OC_ASSIGN | VM_OC_GET_STACK | VM_OC_PUT_IDENT | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_ASSIGN_LITERAL_SET_IDENT, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 0, \
VM_OC_ASSIGN | VM_OC_GET_LITERAL | VM_OC_PUT_IDENT) \
CBC_OPCODE (CBC_ASSIGN_LITERAL_SET_IDENT_PUSH_RESULT, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 1, \
VM_OC_ASSIGN | VM_OC_GET_LITERAL | VM_OC_PUT_IDENT | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_ASSIGN_LITERAL_SET_IDENT_BLOCK, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 0, \
VM_OC_ASSIGN | VM_OC_GET_LITERAL | VM_OC_PUT_IDENT | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_ASSIGN_PROP_LITERAL, CBC_HAS_LITERAL_ARG, -2, \
VM_OC_ASSIGN_PROP | VM_OC_GET_LITERAL | VM_OC_PUT_REFERENCE) \
CBC_OPCODE (CBC_ASSIGN_PROP_LITERAL_PUSH_RESULT, CBC_HAS_LITERAL_ARG, -1, \
VM_OC_ASSIGN_PROP | VM_OC_GET_LITERAL | VM_OC_PUT_REFERENCE | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_ASSIGN_PROP_LITERAL_BLOCK, CBC_HAS_LITERAL_ARG, -2, \
VM_OC_ASSIGN_PROP | VM_OC_GET_LITERAL | VM_OC_PUT_REFERENCE | VM_OC_PUT_BLOCK) \
CBC_OPCODE (CBC_ASSIGN_PROP_THIS_LITERAL, CBC_HAS_LITERAL_ARG, -1, \
VM_OC_ASSIGN_PROP_THIS | VM_OC_GET_LITERAL | VM_OC_PUT_REFERENCE) \
CBC_OPCODE (CBC_ASSIGN_PROP_THIS_LITERAL_PUSH_RESULT, CBC_HAS_LITERAL_ARG, 0, \
VM_OC_ASSIGN_PROP_THIS | VM_OC_GET_LITERAL | VM_OC_PUT_REFERENCE | VM_OC_PUT_STACK) \
CBC_OPCODE (CBC_ASSIGN_PROP_THIS_LITERAL_BLOCK, CBC_HAS_LITERAL_ARG, -1, \
VM_OC_ASSIGN_PROP_THIS | VM_OC_GET_LITERAL | VM_OC_PUT_REFERENCE | VM_OC_PUT_BLOCK) \
\
/* Binary compound assignment opcodes. */ \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_ADD, \
ADD) \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_SUBTRACT, \
SUB) \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_MULTIPLY, \
MUL) \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_DIVIDE, \
DIV) \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_MODULO, \
MOD) \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_LEFT_SHIFT, \
LEFT_SHIFT) \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_RIGHT_SHIFT, \
RIGHT_SHIFT) \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_UNS_RIGHT_SHIFT, \
UNS_RIGHT_SHIFT) \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_BIT_AND, \
BIT_AND) \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_BIT_OR, \
BIT_OR) \
CBC_BINARY_LVALUE_OPERATION (CBC_ASSIGN_BIT_XOR, \
BIT_XOR) \
\
/* Last opcode (not a real opcode). */ \
CBC_OPCODE (CBC_END, CBC_NO_FLAG, 0, \
VM_OC_NONE)
/* All EXT branches are statement block end
* marks, so they are always forward branches. */
#define CBC_EXT_OPCODE_LIST \
/* Branch opcodes first. Some other opcodes are mixed. */ \
CBC_OPCODE (CBC_EXT_NOP, CBC_NO_FLAG, 0, \
VM_OC_NONE) \
CBC_FORWARD_BRANCH (CBC_EXT_WITH_CREATE_CONTEXT, \
-1 + PARSER_WITH_CONTEXT_STACK_ALLOCATION, VM_OC_WITH) \
CBC_OPCODE (CBC_EXT_FOR_IN_GET_NEXT, CBC_NO_FLAG, 1, \
VM_OC_FOR_IN_GET_NEXT | VM_OC_PUT_STACK) \
CBC_FORWARD_BRANCH (CBC_EXT_FOR_IN_CREATE_CONTEXT, \
-1 + PARSER_FOR_IN_CONTEXT_STACK_ALLOCATION, VM_OC_FOR_IN_CREATE_CONTEXT) \
CBC_OPCODE (CBC_EXT_SET_GETTER, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 0, \
VM_OC_SET_GETTER | VM_OC_GET_LITERAL_LITERAL) \
CBC_BACKWARD_BRANCH (CBC_EXT_BRANCH_IF_FOR_IN_HAS_NEXT, 0, \
VM_OC_FOR_IN_HAS_NEXT) \
CBC_OPCODE (CBC_EXT_SET_SETTER, CBC_HAS_LITERAL_ARG | CBC_HAS_LITERAL_ARG2, 0, \
VM_OC_SET_SETTER | VM_OC_GET_LITERAL_LITERAL) \
CBC_FORWARD_BRANCH (CBC_EXT_TRY_CREATE_CONTEXT, PARSER_TRY_CONTEXT_STACK_ALLOCATION, \
VM_OC_TRY) \
CBC_OPCODE (CBC_EXT_THROW_REFERENCE_ERROR, CBC_NO_FLAG, 1, \
VM_OC_THROW_REFERENCE_ERROR) \
CBC_FORWARD_BRANCH (CBC_EXT_CATCH, 1, \
VM_OC_CATCH) \
CBC_OPCODE (CBC_EXT_PUSH_UNDEFINED_BASE, CBC_NO_FLAG, 1, \
VM_OC_PUSH_UNDEFINED_BASE | VM_OC_PUT_STACK) \
CBC_FORWARD_BRANCH (CBC_EXT_FINALLY, 0, \
VM_OC_FINALLY) \
\
/* Basic opcodes. */ \
CBC_OPCODE (CBC_EXT_DEBUGGER, CBC_NO_FLAG, 0, \
VM_OC_NONE) \
\
/* Binary compound assignment opcodes with pushing the result. */ \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_ADD, \
ADD) \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_SUBTRACT, \
SUB) \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_MULTIPLY, \
MUL) \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_DIVIDE, \
DIV) \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_MODULO, \
MOD) \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_LEFT_SHIFT, \
LEFT_SHIFT) \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_RIGHT_SHIFT, \
RIGHT_SHIFT) \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_UNS_RIGHT_SHIFT, \
UNS_RIGHT_SHIFT) \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_BIT_AND, \
BIT_AND) \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_BIT_OR, \
BIT_OR) \
CBC_EXT_BINARY_LVALUE_OPERATION (CBC_EXT_ASSIGN_BIT_XOR, \
BIT_XOR) \
\
/* Binary compound assignment opcodes with saving the result. */ \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_ADD, \
ADD) \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_SUBTRACT, \
SUB) \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_MULTIPLY, \
MUL) \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_DIVIDE, \
DIV) \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_MODULO, \
MOD) \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_LEFT_SHIFT, \
LEFT_SHIFT) \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_RIGHT_SHIFT, \
RIGHT_SHIFT) \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_UNS_RIGHT_SHIFT, \
UNS_RIGHT_SHIFT) \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_BIT_AND, \
BIT_AND) \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_BIT_OR, \
BIT_OR) \
CBC_EXT_BINARY_LVALUE_BLOCK_OPERATION (CBC_EXT_ASSIGN_BIT_XOR, \
BIT_XOR) \
\
/* Last opcode (not a real opcode). */ \
CBC_OPCODE (CBC_EXT_END, CBC_NO_FLAG, 0, \
VM_OC_NONE)
#define CBC_MAXIMUM_BYTE_VALUE 255
#define CBC_MAXIMUM_SMALL_VALUE 510
#define CBC_MAXIMUM_FULL_VALUE 32767
#define CBC_PUSH_NUMBER_BYTE_RANGE_END 256
#define CBC_HIGHEST_BIT_MASK 0x80
#define CBC_LOWER_SEVEN_BIT_MASK 0x7f
/**
* Literal indicies belong to one of the following groups:
*
* 0 <= index < argument_end : arguments
* argument_end <= index < register_end : registers
* register_end <= index < ident_end : identifiers
* ident_end <= index < const_literal_end : constant literals
* const_literal_end <= index < literal_end : template literals
*/
/**
* Compiled byte code arguments.
*/
typedef struct
{
ecma_compiled_code_t header; /**< compiled code header */
uint8_t stack_limit; /**< maximum number of values stored on the stack */
uint8_t argument_end; /**< number of arguments expected by the function */
uint8_t register_end; /**< end position of the register group */
uint8_t ident_end; /**< end position of the identifier group */
uint8_t const_literal_end; /**< end position of the const literal group */
uint8_t literal_end; /**< end position of the literal group */
} cbc_uint8_arguments_t;
/**
* Compiled byte code arguments.
*/
typedef struct
{
ecma_compiled_code_t header; /**< compiled code header */
uint16_t stack_limit; /**< maximum number of values stored on the stack */
uint16_t argument_end; /**< number of arguments expected by the function */
uint16_t register_end; /**< end position of the register group */
uint16_t ident_end; /**< end position of the identifier group */
uint16_t const_literal_end; /**< end position of the const literal group */
uint16_t literal_end; /**< end position of the literal group */
#ifdef JERRY_CPOINTER_32_BIT
uint16_t padding; /**< an unused value */
#endif
} cbc_uint16_arguments_t;
/**
* Compact byte code status flags.
*/
typedef enum
{
CBC_CODE_FLAGS_FUNCTION = (1u << 0), /**< compiled code is JavaScript function */
CBC_CODE_FLAGS_FULL_LITERAL_ENCODING = (1u << 1), /**< full literal encoding mode is enabled */
CBC_CODE_FLAGS_UINT16_ARGUMENTS = (1u << 2), /**< compiled code data is cbc_uint16_arguments_t */
CBC_CODE_FLAGS_STRICT_MODE = (1u << 3), /**< strict mode is enabled */
CBC_CODE_FLAGS_ARGUMENTS_NEEDED = (1u << 4), /**< arguments object must be constructed */
CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED = (1u << 5), /**< no need to create a lexical environment */
CBC_CODE_FLAGS_DEBUGGER_IGNORE = (1u << 6), /**< this function should be ignored by debugger */
CBC_CODE_FLAGS_ARROW_FUNCTION = (1u << 7), /**< this function is an arrow function */
} cbc_code_flags;
#define CBC_OPCODE(arg1, arg2, arg3, arg4) arg1,
/**
* Opcode list.
*/
typedef enum
{
CBC_OPCODE_LIST /**< list of opcodes */
} cbc_opcode_t;
/**
* Extended opcode list.
*/
typedef enum
{
CBC_EXT_OPCODE_LIST /**< list extended opcodes */
} cbc_ext_opcode_t;
#undef CBC_OPCODE
/**
* Opcode flags.
*/
extern const uint8_t cbc_flags[];
extern const uint8_t cbc_ext_flags[];
#ifdef PARSER_DUMP_BYTE_CODE
/**
* Opcode names for debugging.
*/
extern const char * const cbc_names[];
extern const char * const cbc_ext_names[];
#endif /* PARSER_DUMP_BYTE_CODE */
/**
* @}
* @}
* @}
*/
#endif /* !BYTE_CODE_H */
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