/*
 * Copyright (C) 2019 Intel Corporation.  All rights reserved.
 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 */

#ifndef _WASM_NATIVE_H
#define _WASM_NATIVE_H

#include "bh_common.h"
#include "../include/wasm_export.h"
#include "../interpreter/wasm.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct NativeSymbolsNode {
    struct NativeSymbolsNode *next;
    const char *module_name;
    NativeSymbol *native_symbols;
    uint32 n_native_symbols;
    bool call_conv_raw;
} NativeSymbolsNode, *NativeSymbolsList;

/**
 * Lookup global variable of a given import global
 * from libc builtin globals
 *
 * @param module_name the module name of the import global
 * @param global_name the global name of the import global
 * @param global return the global data
 *
 * @param true if success, false otherwise
 */
bool
wasm_native_lookup_libc_builtin_global(const char *module_name,
                                       const char *global_name,
                                       WASMGlobalImport *global);

/**
 * Resolve native symbol in all libraries, including libc-builtin, libc-wasi,
 * base lib and extension lib, and user registered natives
 * function, which can be auto checked by vm before calling native function
 *
 * @param module_name the module name of the import function
 * @param func_name the function name of the import function
 * @param func_type the function prototype of the import function
 * @param p_signature output the signature if resolve success
 *
 * @return the native function pointer if success, NULL otherwise
 */
void *
wasm_native_resolve_symbol(const char *module_name, const char *field_name,
                           const WASMFuncType *func_type,
                           const char **p_signature, void **p_attachment,
                           bool *p_call_conv_raw);

bool
wasm_native_register_natives(const char *module_name,
                             NativeSymbol *native_symbols,
                             uint32 n_native_symbols);

bool
wasm_native_register_natives_raw(const char *module_name,
                                 NativeSymbol *native_symbols,
                                 uint32 n_native_symbols);

bool
wasm_native_unregister_natives(const char *module_name,
                               NativeSymbol *native_symbols);

#if WASM_ENABLE_MODULE_INST_CONTEXT != 0
struct WASMModuleInstanceCommon;

void *
wasm_native_create_context_key(
    void (*dtor)(struct WASMModuleInstanceCommon *inst, void *ctx));

void
wasm_native_destroy_context_key(void *key);

void
wasm_native_set_context(struct WASMModuleInstanceCommon *inst, void *key,
                        void *ctx);
void
wasm_native_set_context_spread(struct WASMModuleInstanceCommon *inst, void *key,
                               void *ctx);
void *
wasm_native_get_context(struct WASMModuleInstanceCommon *inst, void *key);

void
wasm_native_call_context_dtors(struct WASMModuleInstanceCommon *inst);

void
wasm_native_inherit_contexts(struct WASMModuleInstanceCommon *child,
                             struct WASMModuleInstanceCommon *parent);
#else /* WASM_ENABLE_MODULE_INST_CONTEXT */
#define wasm_native_call_context_dtors(inst) (void)(inst)
#define wasm_native_inherit_contexts(child, parent) (void)(parent)
#endif /* WASM_ENABLE_MODULE_INST_CONTEXT */

bool
wasm_native_init();

void
wasm_native_destroy();

#if WASM_ENABLE_QUICK_AOT_ENTRY != 0
void *
wasm_native_lookup_quick_aot_entry(const WASMFuncType *func_type);
#endif

#ifdef __cplusplus
}
#endif

#endif /* end of _WASM_NATIVE_H */