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https://github.com/bytecodealliance/wasm-micro-runtime.git
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97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/*
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* Copyright (C) 2019 Intel Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#ifndef _WASM_INTERP_H
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#define _WASM_INTERP_H
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#include "wasm.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct WASMModuleInstance;
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struct WASMFunctionInstance;
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struct WASMExecEnv;
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typedef struct WASMInterpFrame {
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/* The frame of the caller that are calling the current function. */
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struct WASMInterpFrame *prev_frame;
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/* The current WASM function. */
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struct WASMFunctionInstance *function;
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/* Instruction pointer of the bytecode array. */
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uint8 *ip;
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#if WASM_ENABLE_FAST_JIT != 0
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uint8 *jitted_return_addr;
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#endif
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#if WASM_ENABLE_PERF_PROFILING != 0
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uint64 time_started;
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#endif
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#if WASM_ENABLE_FAST_INTERP != 0
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/* Return offset of the first return value of current frame,
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the callee will put return values here continuously */
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uint32 ret_offset;
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uint32 *lp;
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uint32 operand[1];
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#else
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/* Operand stack top pointer of the current frame. The bottom of
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the stack is the next cell after the last local variable. */
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uint32 *sp_bottom;
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uint32 *sp_boundary;
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uint32 *sp;
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WASMBranchBlock *csp_bottom;
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WASMBranchBlock *csp_boundary;
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WASMBranchBlock *csp;
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/**
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* Frame data, the layout is:
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* lp: parameters and local variables
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* sp_bottom to sp_boundary: wasm operand stack
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* csp_bottom to csp_boundary: wasm label stack
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* jit spill cache: only available for fast jit
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*/
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uint32 lp[1];
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#endif
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} WASMInterpFrame;
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/**
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* Calculate the size of interpreter area of frame of a function.
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*
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* @param all_cell_num number of all cells including local variables
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* and the working stack slots
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*
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* @return the size of interpreter area of the frame
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*/
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static inline unsigned
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wasm_interp_interp_frame_size(unsigned all_cell_num)
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{
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unsigned frame_size;
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#if WASM_ENABLE_FAST_INTERP == 0
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frame_size = (uint32)offsetof(WASMInterpFrame, lp) + all_cell_num * 4;
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#else
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frame_size = (uint32)offsetof(WASMInterpFrame, operand) + all_cell_num * 4;
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#endif
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return align_uint(frame_size, 4);
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}
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void
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wasm_interp_call_wasm(struct WASMModuleInstance *module_inst,
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struct WASMExecEnv *exec_env,
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struct WASMFunctionInstance *function, uint32 argc,
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uint32 argv[]);
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#ifdef __cplusplus
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}
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#endif
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#endif /* end of _WASM_INTERP_H */
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