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https://github.com/bytecodealliance/wasm-micro-runtime.git
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be2b561935
By this patch, an experimental shared-everything modules linking is supported, typically user could use the feature to dlopen a wasm/aot module, then get the funcref by dlsym, and call the target function by call indirect instr. Of course, a dlclose is supported too. Currently, root module could be a regular module, wasi module, or AssemblyScript module; dependency module MUST be a module built followed the proposal "dynamical linking", that means it should contain a new dylink section and no mem allocator function exported. User could get it by clang or emcc. New iwasm switch --enable-dopen is used for enabling the feature and choosing the launch mode. see the iwasm -h for details. Multiple modules feature is not well tested, there should be some cases not covered. Co-authored-by: jhe <hejie.he@antgroup.com>
63 lines
1.6 KiB
C
63 lines
1.6 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 _LIB_EXPORT_H_
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#define _LIB_EXPORT_H_
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#include <stdint.h>
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#include "ConstStrDesc.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef union {
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const char *symbol_str;
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const ConstStrDescription * symbol;
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uint32 symbol_key;
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} NATIVE_SYMBOL_U;
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typedef struct NativeSymbol {
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NATIVE_SYMBOL_U u;
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void *func_ptr;
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const char *signature;
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/* attachment which can be retrieved in native API by
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calling wasm_runtime_get_function_attachment(exec_env) */
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void *attachment;
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} NativeSymbol;
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/* clang-format off */
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#define EXPORT_WASM_API(symbol) \
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{ #symbol, (void *)symbol, NULL, NULL }
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#define EXPORT_WASM_API2(symbol) \
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{ #symbol, (void *)symbol##_wrapper, NULL, NULL }
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#define EXPORT_WASM_API_WITH_SIG(symbol, signature) \
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{ #symbol, (void *)symbol, signature, NULL }
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#define EXPORT_WASM_API_WITH_SIG2(symbol, signature) \
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{ #symbol, (void *)symbol##_wrapper, signature, NULL }
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#define EXPORT_WASM_API_WITH_ATT(symbol, signature, attachment) \
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{ #symbol, (void *)symbol, signature, attachment }
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#define EXPORT_WASM_API_WITH_ATT2(symbol, signature, attachment) \
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{ #symbol, (void *)symbol##_wrapper, signature, attachment }
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/* clang-format on */
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/**
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* Get the exported APIs of base lib
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*
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* @param p_base_lib_apis return the exported API array of base lib
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*
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* @return the number of the exported API
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*/
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uint32_t
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get_base_lib_export_apis(NativeSymbol **p_base_lib_apis);
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#ifdef __cplusplus
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}
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#endif
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#endif /* end of _LIB_EXPORT_H_ */
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