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ECMA-stack is related to VM and is not related to ECMA component, except for GC. Dependency between vm-stack and GC would be solved after GC would be extracted to a separate compoment. JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/* Copyright 2015 Samsung Electronics Co., Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef VM_STACK_H
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#define VM_STACK_H
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#include "config.h"
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#include "ecma-globals.h"
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/** \addtogroup vm Virtual machine
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* @{
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*
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* \addtogroup stack VM stack
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* @{
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*/
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/**
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* Number of ecma-values inlined into stack frame
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*/
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#define VM_STACK_FRAME_INLINED_VALUES_NUMBER CONFIG_VM_STACK_FRAME_INLINED_VALUES_NUMBER
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/**
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* Header of a ECMA stack frame's chunk
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*/
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typedef struct
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{
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uint16_t prev_chunk_p; /**< previous chunk of same frame */
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} vm_stack_chunk_header_t;
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/**
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* ECMA stack frame
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*/
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typedef struct vm_stack_frame_t
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{
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struct vm_stack_frame_t *prev_frame_p; /**< previous frame */
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vm_stack_chunk_header_t *top_chunk_p; /**< the top-most chunk of the frame */
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ecma_value_t *dynamically_allocated_value_slots_p; /**< pointer to dynamically allocated value slots
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* in the top-most chunk */
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uint32_t current_slot_index; /**< index of first free slot in the top chunk */
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ecma_value_t inlined_values[VM_STACK_FRAME_INLINED_VALUES_NUMBER]; /**< place for values inlined into stack frame
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* (instead of being placed on heap) */
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ecma_value_t *regs_p; /**< register variables */
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int32_t regs_number; /**< number of register variables */
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} vm_stack_frame_t;
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extern void vm_stack_init (void);
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extern void vm_stack_finalize (void);
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extern vm_stack_frame_t*
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vm_stack_get_top_frame (void);
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extern void
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vm_stack_add_frame (vm_stack_frame_t *frame_p,
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ecma_value_t *regs_p,
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int32_t regs_num);
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extern void vm_stack_free_frame (vm_stack_frame_t *frame_p);
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extern ecma_value_t vm_stack_frame_get_reg_value (vm_stack_frame_t *frame_p, int32_t reg_index);
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extern void vm_stack_frame_set_reg_value (vm_stack_frame_t *frame_p, int32_t reg_index, ecma_value_t value);
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extern void vm_stack_push_value (vm_stack_frame_t *frame_p, ecma_value_t value);
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extern ecma_value_t vm_stack_top_value (vm_stack_frame_t *frame_p);
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extern void vm_stack_pop (vm_stack_frame_t *frame_p);
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extern void vm_stack_pop_multiple (vm_stack_frame_t *frame_p, uint32_t number);
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/**
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* @}
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* @}
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*/
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#endif /* !VM_STACK_H */
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