mirror of
https://github.com/bytecodealliance/wasm-micro-runtime.git
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569 lines
18 KiB
C
569 lines
18 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_EXPORT_H
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#define _WASM_EXPORT_H
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#include <inttypes.h>
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#include <stdbool.h>
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#include "lib_export.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define get_module_inst(exec_env) \
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wasm_runtime_get_module_inst(exec_env)
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#define validate_app_addr(offset, size) \
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wasm_runtime_validate_app_addr(module_inst, offset, size)
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#define validate_app_str_addr(offset) \
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wasm_runtime_validate_app_str_addr(module_inst, offset)
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#define addr_app_to_native(offset) \
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wasm_runtime_addr_app_to_native(module_inst, offset)
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#define addr_native_to_app(ptr) \
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wasm_runtime_addr_native_to_app(module_inst, ptr)
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#define module_malloc(size, p_native_addr) \
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wasm_runtime_module_malloc(module_inst, size, p_native_addr)
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#define module_free(offset) \
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wasm_runtime_module_free(module_inst, offset)
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/* Uninstantiated WASM module loaded from WASM binary file
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or AoT binary file*/
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struct WASMModuleCommon;
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typedef struct WASMModuleCommon *wasm_module_t;
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/* Instantiated WASM module */
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struct WASMModuleInstanceCommon;
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typedef struct WASMModuleInstanceCommon *wasm_module_inst_t;
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/* Function instance */
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typedef void WASMFunctionInstanceCommon;
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typedef WASMFunctionInstanceCommon *wasm_function_inst_t;
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/* WASM section */
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typedef struct wasm_section_t {
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struct wasm_section_t *next;
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/* section type */
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int section_type;
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/* section body, not include type and size */
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uint8_t *section_body;
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/* section body size */
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uint32_t section_body_size;
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} wasm_section_t, aot_section_t, *wasm_section_list_t, *aot_section_list_t;
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/* Execution environment, e.g. stack info */
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struct WASMExecEnv;
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typedef struct WASMExecEnv *wasm_exec_env_t;
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/* Package Type */
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typedef enum {
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Wasm_Module_Bytecode = 0,
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Wasm_Module_AoT,
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Package_Type_Unknown = 0xFFFF
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} package_type_t;
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/* Memory allocator type */
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typedef enum {
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/* pool mode, allocate memory from user defined heap buffer */
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Alloc_With_Pool = 0,
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/* user allocator mode, allocate memory from user defined
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malloc function */
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Alloc_With_Allocator,
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/* system allocator mode, allocate memory from system allocator,
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or, platform's os_malloc function */
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Alloc_With_System_Allocator,
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} mem_alloc_type_t;
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/* Memory allocator option */
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typedef union MemAllocOption {
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struct {
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void *heap_buf;
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uint32_t heap_size;
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} pool;
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struct {
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void *malloc_func;
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void *realloc_func;
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void *free_func;
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} allocator;
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} MemAllocOption;
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/* WASM runtime initialize arguments */
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typedef struct RuntimeInitArgs {
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mem_alloc_type_t mem_alloc_type;
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MemAllocOption mem_alloc_option;
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const char *native_module_name;
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NativeSymbol *native_symbols;
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uint32_t n_native_symbols;
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} RuntimeInitArgs;
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/**
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* Initialize the WASM runtime environment, and also initialize
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* the memory allocator with system allocator, which calls os_malloc
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* to allocate memory
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*
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* @return true if success, false otherwise
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*/
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bool
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wasm_runtime_init();
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/**
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* Initialize the WASM runtime environment, and also initialize
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* the memory allocator and register native symbols, which are specified
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* with init arguments
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*
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* @param init_args specifies the init arguments
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*
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* @return return true if success, false otherwise
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*/
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bool
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wasm_runtime_full_init(RuntimeInitArgs *init_args);
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/**
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* Destroy the WASM runtime environment.
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*/
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void
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wasm_runtime_destroy();
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/**
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* Allocate memory from runtime memory environment.
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*
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* @param size bytes need to allocate
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*
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* @return the pointer to memory allocated
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*/
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void *
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wasm_runtime_malloc(unsigned int size);
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/**
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* Reallocate memory from runtime memory environment
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*
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* @param ptr the original memory
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* @param size bytes need to reallocate
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*
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* @return the pointer to memory reallocated
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*/
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void *
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wasm_runtime_realloc(void *ptr, unsigned int size);
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/*
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* Free memory to runtime memory environment.
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*/
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void wasm_runtime_free(void *ptr);
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/**
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* Get the package type of a buffer.
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*
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* @param buf the package buffer
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* @param size the package buffer size
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*
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* @return the package type, return Package_Type_Unknown if the type is unknown
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*/
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package_type_t
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get_package_type(const uint8_t *buf, uint32_t size);
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/**
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* Load a WASM module from a specified byte buffer.
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*
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* @param buf the byte buffer which contains the WASM binary data
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* @param size the size of the buffer
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* @param error_buf output of the exception info
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* @param error_buf_size the size of the exception string
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*
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* @return return WASM module loaded, NULL if failed
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*/
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wasm_module_t
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wasm_runtime_load(const uint8_t *buf, uint32_t size,
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char *error_buf, uint32_t error_buf_size);
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/**
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* Load a WASM module from a specified WASM or AOT section list.
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*
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* @param section_list the section list which contains each section data
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* @param is_aot whether the section list is AOT section list
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* @param error_buf output of the exception info
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* @param error_buf_size the size of the exception string
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*
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* @return return WASM module loaded, NULL if failed
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*/
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wasm_module_t
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wasm_runtime_load_from_sections(wasm_section_list_t section_list, bool is_aot,
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char *error_buf, uint32_t error_buf_size);
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/**
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* Unload a WASM module.
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*
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* @param module the module to be unloaded
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*/
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void
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wasm_runtime_unload(wasm_module_t module);
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void
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wasm_runtime_set_wasi_args(wasm_module_t module,
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const char *dir_list[], uint32_t dir_count,
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const char *map_dir_list[], uint32_t map_dir_count,
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const char *env[], uint32_t env_count,
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char *argv[], int argc);
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/**
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* Instantiate a WASM module.
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*
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* @param module the WASM module to instantiate
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* @param stack_size the default stack size of the module instance, a stack
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* will be created when function wasm_runtime_call_wasm() is called
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* to run WASM function and the exec_env argument passed to
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* wasm_runtime_call_wasm() is NULL. That means this parameter is
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* ignored if exec_env is not NULL.
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* @param heap_size the default heap size of the module instance, a heap will
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* be created besides the app memory space. Both wasm app and native
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* function can allocate memory from the heap. If heap_size is 0, the
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* default heap size will be used.
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* @param error_buf buffer to output the error info if failed
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* @param error_buf_size the size of the error buffer
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*
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* @return return the instantiated WASM module instance, NULL if failed
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*/
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wasm_module_inst_t
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wasm_runtime_instantiate(const wasm_module_t module,
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uint32_t stack_size, uint32_t heap_size,
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char *error_buf, uint32_t error_buf_size);
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/**
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* Deinstantiate a WASM module instance, destroy the resources.
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*
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* @param module_inst the WASM module instance to destroy
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*/
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void
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wasm_runtime_deinstantiate(wasm_module_inst_t module_inst);
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bool
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wasm_runtime_is_wasi_mode(wasm_module_inst_t module_inst);
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wasm_function_inst_t
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wasm_runtime_lookup_wasi_start_function(wasm_module_inst_t module_inst);
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/**
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* Lookup an exported function in the WASM module instance.
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*
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* @param module_inst the module instance
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* @param name the name of the function
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* @param signature the signature of the function, ignored currently
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*
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* @return the function instance found
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*/
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wasm_function_inst_t
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wasm_runtime_lookup_function(wasm_module_inst_t const module_inst,
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const char *name, const char *signature);
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/**
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* Create execution environment for a WASM module instance.
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*
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* @param module_inst the module instance
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* @param stack_size the stack size to execute a WASM function
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*
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* @return the execution environment
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*/
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wasm_exec_env_t
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wasm_runtime_create_exec_env(wasm_module_inst_t module_inst,
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uint32_t stack_size);
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/**
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* Destroy the execution environment.
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*
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* @param env the execution environment to destroy
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*/
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void
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wasm_runtime_destroy_exec_env(wasm_exec_env_t exec_env);
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/**
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* Get WASM module instance from execution environment
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*
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* @param exec_env the execution environment to retrieve
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*
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* @return the WASM module instance
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*/
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wasm_module_inst_t
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wasm_runtime_get_module_inst(wasm_exec_env_t exec_env);
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/**
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* Call the given WASM function of a WASM module instance with
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* arguments (bytecode and AoT).
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*
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* @param exec_env the execution environment to call the function
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* which must be created from wasm_create_exec_env()
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* @param function the function to be called
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* @param argc the number of arguments
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* @param argv the arguments. If the function method has return value,
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* the first (or first two in case 64-bit return value) element of
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* argv stores the return value of the called WASM function after this
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* function returns.
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*
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* @return true if success, false otherwise and exception will be thrown,
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* the caller can call wasm_runtime_get_exception to get exception info.
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*/
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bool
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wasm_runtime_call_wasm(wasm_exec_env_t exec_env,
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wasm_function_inst_t function,
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uint32_t argc, uint32_t argv[]);
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/**
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* Find the unique main function from a WASM module instance
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* and execute that function.
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*
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* @param module_inst the WASM module instance
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* @param argc the number of arguments
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* @param argv the arguments array
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*
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* @return true if the main function is called, false otherwise and exception will be thrown,
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* the caller can call wasm_runtime_get_exception to get exception info.
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*/
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bool
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wasm_application_execute_main(wasm_module_inst_t module_inst,
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int32_t argc, char *argv[]);
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/**
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* Find the specified function in argv[0] from a WASM module instance
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* and execute that function.
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*
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* @param module_inst the WASM module instance
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* @param name the name of the function to execute
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* @param argc the number of arguments
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* @param argv the arguments array
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*
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* @return true if the specified function is called, false otherwise and exception will be thrown,
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* the caller can call wasm_runtime_get_exception to get exception info.
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*/
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bool
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wasm_application_execute_func(wasm_module_inst_t module_inst,
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const char *name, int32_t argc, char *argv[]);
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/**
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* Get exception info of the WASM module instance.
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*
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* @param module_inst the WASM module instance
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*
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* @return the exception string
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*/
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const char *
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wasm_runtime_get_exception(wasm_module_inst_t module_inst);
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/**
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* Clear exception info of the WASM module instance.
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*
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* @param module_inst the WASM module instance
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*/
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void
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wasm_runtime_clear_exception(wasm_module_inst_t module_inst);
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/**
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* Set custom data to WASM module instance.
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*
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* @param module_inst the WASM module instance
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* @param custom_data the custom data to be set
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*/
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void
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wasm_runtime_set_custom_data(wasm_module_inst_t module_inst,
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void *custom_data);
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/**
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* Get the custom data within a WASM module instance.
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*
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* @param module_inst the WASM module instance
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*
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* @return the custom data (NULL if not set yet)
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*/
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void *
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wasm_runtime_get_custom_data(wasm_module_inst_t module_inst);
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/**
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* Allocate memory from the heap of WASM module instance
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*
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* @param module_inst the WASM module instance which contains heap
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* @param size the size bytes to allocate
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* @param p_native_addr return native address of the allocated memory
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* if it is not NULL, and return NULL if memory malloc failed
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*
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* @return the allocated memory address, which is a relative offset to the
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* base address of the module instance's memory space, the value range
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* is (-heap_size, 0). Note that it is not an absolute address.
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* Return non-zero if success, zero if failed.
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*/
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int32_t
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wasm_runtime_module_malloc(wasm_module_inst_t module_inst, uint32_t size,
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void **p_native_addr);
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/**
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* Free memory to the heap of WASM module instance
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*
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* @param module_inst the WASM module instance which contains heap
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* @param ptr the pointer to free
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*/
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void
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wasm_runtime_module_free(wasm_module_inst_t module_inst, int32_t ptr);
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/**
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* Allocate memory from the heap of WASM module instance and initialize
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* the memory with src
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*
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* @param module_inst the WASM module instance which contains heap
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* @param src the source data to copy
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* @param size the size of the source data
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*
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* @return the allocated memory address, which is a relative offset to the
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* base address of the module instance's memory space, the value range
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* is (-heap_size, 0). Note that it is not an absolute address.
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* Return non-zero if success, zero if failed.
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*/
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int32_t
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wasm_runtime_module_dup_data(wasm_module_inst_t module_inst,
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const char *src, uint32_t size);
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/**
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* Validate the app address, check whether it belongs to WASM module
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* instance's address space, or in its heap space or memory space.
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*
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* @param module_inst the WASM module instance
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* @param app_offset the app address to validate, which is a relative address
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* @param size the size bytes of the app address
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*
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* @return true if success, false otherwise. If failed, an exception will
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* be thrown.
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*/
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bool
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wasm_runtime_validate_app_addr(wasm_module_inst_t module_inst,
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int32_t app_offset, uint32_t size);
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/**
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* Similar to wasm_runtime_validate_app_addr(), except that the size parameter
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* is not provided. This function validates the app string address, check whether it
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* belongs to WASM module instance's address space, or in its heap space or
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* memory space. Moreover, it checks whether it is the offset of a string that
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* is end with '\0'.
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* @param module_inst the WASM module instance
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* @param app_str_offset the app address of the string to validate, which is a
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* relative address
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*
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* @return true if success, false otherwise. If failed, an exception will
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* be thrown.
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*/
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bool
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wasm_runtime_validate_app_str_addr(wasm_module_inst_t module_inst,
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int32_t app_str_offset);
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/**
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* Validate the native address, check whether it belongs to WASM module
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* instance's address space, or in its heap space or memory space.
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*
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* @param module_inst the WASM module instance
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* @param native_ptr the native address to validate, which is an absolute
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* address
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* @param size the size bytes of the app address
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*
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* @return true if success, false otherwise. If failed, an exception will
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* be thrown.
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*/
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bool
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wasm_runtime_validate_native_addr(wasm_module_inst_t module_inst,
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void *native_ptr, uint32_t size);
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/**
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* Convert app address(relative address) to native address(absolute address)
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*
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* @param module_inst the WASM module instance
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* @param app_offset the app adress
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*
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* @return the native address converted
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*/
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void*
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wasm_runtime_addr_app_to_native(wasm_module_inst_t module_inst,
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int32_t app_offset);
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/**
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* Convert native address(absolute address) to app address(relative address)
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*
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* @param module_inst the WASM module instance
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* @param native_ptr the native address
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*
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* @return the app address converted
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*/
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int32_t
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wasm_runtime_addr_native_to_app(wasm_module_inst_t module_inst,
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void *native_ptr);
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/**
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* Get the app address range (relative address) that a app address belongs to
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*
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* @param module_inst the WASM module instance
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* @param app_offset the app address to retrieve
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* @param p_app_start_offset buffer to output the app start offset if not NULL
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* @param p_app_end_offset buffer to output the app end offset if not NULL
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*
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* @return true if success, false otherwise.
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*/
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bool
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wasm_runtime_get_app_addr_range(wasm_module_inst_t module_inst,
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int32_t app_offset,
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int32_t *p_app_start_offset,
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int32_t *p_app_end_offset);
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/**
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* Get the native address range (absolute address) that a native address belongs to
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*
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* @param module_inst the WASM module instance
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* @param native_ptr the native address to retrieve
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* @param p_native_start_addr buffer to output the native start address if not NULL
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|
* @param p_native_end_addr buffer to output the native end address if not NULL
|
|
*
|
|
* @return true if success, false otherwise.
|
|
*/
|
|
bool
|
|
wasm_runtime_get_native_addr_range(wasm_module_inst_t module_inst,
|
|
uint8_t *native_ptr,
|
|
uint8_t **p_native_start_addr,
|
|
uint8_t **p_native_end_addr);
|
|
|
|
/**
|
|
* Register native functions with same module name
|
|
*
|
|
* @param module_name the module name of the native functions
|
|
* @param native_symbols specifies an array of NativeSymbol structures which
|
|
* contain the names, function pointers and signatures
|
|
* Note: WASM runtime will not allocate memory to clone the data, so
|
|
* user must ensure the array can be used forever
|
|
* Meanings of letters in function signature:
|
|
* 'i': the parameter is i32 type
|
|
* 'I': the parameter is i64 type
|
|
* 'f': the parameter is f32 type
|
|
* 'F': the parameter is f64 type
|
|
* '*': the parameter is a pointer (i32 in WASM), and runtime will
|
|
* auto check its boundary before calling the native function.
|
|
* If it is followed by '~', the checked length of the pointer
|
|
* is gotten from the following parameter, if not, the checked
|
|
* length of the pointer is 1.
|
|
* '~': the parameter is the pointer's length with i32 type, and must
|
|
* follow after '*'
|
|
* '$': the parameter is a string (i32 in WASM), and runtime will
|
|
* auto check its boundary before calling the native function
|
|
* @param n_native_symbols specifies the number of native symbols in the array
|
|
*
|
|
* @return true if success, false otherwise
|
|
*/
|
|
bool wasm_runtime_register_natives(const char *module_name,
|
|
NativeSymbol *native_symbols,
|
|
uint32_t n_native_symbols);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* end of _WASM_EXPORT_H */
|