pebble/third_party/jerryscript/jerry-core/vm/vm-stack.h
2025-01-27 11:38:16 -08:00

79 lines
2.4 KiB
C

/* Copyright 2015-2016 Samsung Electronics Co., Ltd.
* Copyright 2015-2016 University of Szeged.
*
* 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 VM_STACK_H
#define VM_STACK_H
#include "config.h"
#include "ecma-globals.h"
/** \addtogroup vm Virtual machine
* @{
*
* \addtogroup stack VM stack
* @{
*/
/**
* Number of ecma values inlined into stack frame
*/
#define VM_STACK_FRAME_INLINED_VALUES_NUMBER CONFIG_VM_STACK_FRAME_INLINED_VALUES_NUMBER
/**
* Header of a ECMA stack frame's chunk
*/
typedef struct
{
uint16_t prev_chunk_p; /**< previous chunk of same frame */
} vm_stack_chunk_header_t;
/**
* ECMA stack frame
*/
typedef struct vm_stack_frame_t
{
struct vm_stack_frame_t *prev_frame_p; /**< previous frame */
uint32_t regs_number; /**< number of register variables */
} vm_stack_frame_t;
#define VM_CREATE_CONTEXT(type, end_offset) ((ecma_value_t) ((type) | (end_offset) << 4))
#define VM_GET_CONTEXT_TYPE(value) ((vm_stack_context_type_t) ((value) & 0xf))
#define VM_GET_CONTEXT_END(value) ((value) >> 4)
/**
* Context types for the vm stack.
*/
typedef enum
{
VM_CONTEXT_FINALLY_JUMP, /**< finally context with a jump */
VM_CONTEXT_FINALLY_THROW, /**< finally context with a throw */
VM_CONTEXT_FINALLY_RETURN, /**< finally context with a return */
VM_CONTEXT_TRY, /**< try context */
VM_CONTEXT_CATCH, /**< catch context */
VM_CONTEXT_WITH, /**< with context */
VM_CONTEXT_FOR_IN, /**< for-in context */
} vm_stack_context_type_t;
extern ecma_value_t *vm_stack_context_abort (vm_frame_ctx_t *, ecma_value_t *);
extern bool vm_stack_find_finally (vm_frame_ctx_t *, ecma_value_t **,
vm_stack_context_type_t, uint32_t);
/**
* @}
* @}
*/
#endif /* !VM_STACK_H */