#ifndef WASMER_H
#define WASMER_H
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
enum wasmer_import_export_kind {
WASM_FUNCTION,
WASM_GLOBAL,
WASM_MEMORY,
WASM_TABLE,
};
typedef uint32_t wasmer_import_export_kind;
typedef enum {
WASMER_OK = 1,
WASMER_ERROR = 2,
} wasmer_result_t;
enum wasmer_value_tag {
WASM_I32,
WASM_I64,
WASM_F32,
WASM_F64,
};
typedef uint32_t wasmer_value_tag;
typedef struct {
} wasmer_module_t;
typedef struct {
} wasmer_export_descriptor_t;
typedef struct {
const uint8_t *bytes;
uint32_t bytes_len;
} wasmer_byte_array;
typedef struct {
} wasmer_export_descriptors_t;
typedef struct {
} wasmer_export_func_t;
typedef union {
int32_t I32;
int64_t I64;
float F32;
double F64;
} wasmer_value;
typedef struct {
wasmer_value_tag tag;
wasmer_value value;
} wasmer_value_t;
typedef struct {
} wasmer_export_t;
typedef struct {
} wasmer_memory_t;
typedef struct {
} wasmer_exports_t;
typedef struct {
} wasmer_global_t;
typedef struct {
bool mutable_;
wasmer_value_tag kind;
} wasmer_global_descriptor_t;
typedef struct {
} wasmer_import_descriptor_t;
typedef struct {
} wasmer_import_descriptors_t;
typedef struct {
} wasmer_import_func_t;
typedef struct {
} wasmer_instance_t;
typedef struct {
} wasmer_instance_context_t;
typedef struct {
} wasmer_table_t;
typedef union {
const wasmer_import_func_t *func;
const wasmer_table_t *table;
const wasmer_memory_t *memory;
const wasmer_global_t *global;
} wasmer_import_export_value;
typedef struct {
wasmer_byte_array module_name;
wasmer_byte_array import_name;
wasmer_import_export_kind tag;
wasmer_import_export_value value;
} wasmer_import_t;
typedef struct {
bool has_some;
uint32_t some;
} wasmer_limit_option_t;
typedef struct {
uint32_t min;
wasmer_limit_option_t max;
} wasmer_limits_t;
typedef struct {
} wasmer_serialized_module_t;
typedef struct {
} wasmer_trampoline_buffer_builder_t;
typedef struct {
} wasmer_trampoline_callable_t;
typedef struct {
} wasmer_trampoline_buffer_t;
/**
* Creates a new Module from the given wasm bytes.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_compile(wasmer_module_t **module,
uint8_t *wasm_bytes,
uint32_t wasm_bytes_len);
/**
* Gets export descriptor kind
*/
wasmer_import_export_kind wasmer_export_descriptor_kind(wasmer_export_descriptor_t *export_);
/**
* Gets name for the export descriptor
*/
wasmer_byte_array wasmer_export_descriptor_name(wasmer_export_descriptor_t *export_descriptor);
/**
* Gets export descriptors for the given module
* The caller owns the object and should call `wasmer_export_descriptors_destroy` to free it.
*/
void wasmer_export_descriptors(const wasmer_module_t *module,
wasmer_export_descriptors_t **export_descriptors);
/**
* Frees the memory for the given export descriptors
*/
void wasmer_export_descriptors_destroy(wasmer_export_descriptors_t *export_descriptors);
/**
* Gets export descriptor by index
*/
wasmer_export_descriptor_t *wasmer_export_descriptors_get(wasmer_export_descriptors_t *export_descriptors,
int idx);
/**
* Gets the length of the export descriptors
*/
int wasmer_export_descriptors_len(wasmer_export_descriptors_t *exports);
/**
* Calls a `func` with the provided parameters.
* Results are set using the provided `results` pointer.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_export_func_call(const wasmer_export_func_t *func,
const wasmer_value_t *params,
int params_len,
wasmer_value_t *results,
int results_len);
/**
* Sets the params buffer to the parameter types of the given wasmer_export_func_t
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_export_func_params(const wasmer_export_func_t *func,
wasmer_value_tag *params,
uint32_t params_len);
/**
* Sets the result parameter to the arity of the params of the wasmer_export_func_t
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_export_func_params_arity(const wasmer_export_func_t *func, uint32_t *result);
/**
* Sets the returns buffer to the parameter types of the given wasmer_export_func_t
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_export_func_returns(const wasmer_export_func_t *func,
wasmer_value_tag *returns,
uint32_t returns_len);
/**
* Sets the result parameter to the arity of the returns of the wasmer_export_func_t
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_export_func_returns_arity(const wasmer_export_func_t *func,
uint32_t *result);
/**
* Gets wasmer_export kind
*/
wasmer_import_export_kind wasmer_export_kind(wasmer_export_t *export_);
/**
* Gets name from wasmer_export
*/
wasmer_byte_array wasmer_export_name(wasmer_export_t *export_);
/**
* Gets export func from export
*/
const wasmer_export_func_t *wasmer_export_to_func(const wasmer_export_t *export_);
/**
* Gets a memory pointer from an export pointer.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_export_to_memory(const wasmer_export_t *export_, wasmer_memory_t **memory);
/**
* Frees the memory for the given exports
*/
void wasmer_exports_destroy(wasmer_exports_t *exports);
/**
* Gets wasmer_export by index
*/
wasmer_export_t *wasmer_exports_get(wasmer_exports_t *exports, int idx);
/**
* Gets the length of the exports
*/
int wasmer_exports_len(wasmer_exports_t *exports);
/**
* Frees memory for the given Global
*/
void wasmer_global_destroy(wasmer_global_t *global);
/**
* Gets the value stored by the given Global
*/
wasmer_value_t wasmer_global_get(wasmer_global_t *global);
/**
* Returns a descriptor (type, mutability) of the given Global
*/
wasmer_global_descriptor_t wasmer_global_get_descriptor(wasmer_global_t *global);
/**
* Creates a new Global and returns a pointer to it.
* The caller owns the object and should call `wasmer_global_destroy` to free it.
*/
wasmer_global_t *wasmer_global_new(wasmer_value_t value, bool mutable_);
/**
* Sets the value stored by the given Global
*/
void wasmer_global_set(wasmer_global_t *global, wasmer_value_t value);
/**
* Gets export descriptor kind
*/
wasmer_import_export_kind wasmer_import_descriptor_kind(wasmer_import_descriptor_t *export_);
/**
* Gets module name for the import descriptor
*/
wasmer_byte_array wasmer_import_descriptor_module_name(wasmer_import_descriptor_t *import_descriptor);
/**
* Gets name for the import descriptor
*/
wasmer_byte_array wasmer_import_descriptor_name(wasmer_import_descriptor_t *import_descriptor);
/**
* Gets import descriptors for the given module
* The caller owns the object and should call `wasmer_import_descriptors_destroy` to free it.
*/
void wasmer_import_descriptors(const wasmer_module_t *module,
wasmer_import_descriptors_t **import_descriptors);
/**
* Frees the memory for the given import descriptors
*/
void wasmer_import_descriptors_destroy(wasmer_import_descriptors_t *import_descriptors);
/**
* Gets import descriptor by index
*/
wasmer_import_descriptor_t *wasmer_import_descriptors_get(wasmer_import_descriptors_t *import_descriptors,
unsigned int idx);
/**
* Gets the length of the import descriptors
*/
unsigned int wasmer_import_descriptors_len(wasmer_import_descriptors_t *exports);
/**
* Frees memory for the given Func
*/
void wasmer_import_func_destroy(wasmer_import_func_t *func);
/**
* Creates new func
* The caller owns the object and should call `wasmer_import_func_destroy` to free it.
*/
wasmer_import_func_t *wasmer_import_func_new(void (*func)(void *data),
const wasmer_value_tag *params,
unsigned int params_len,
const wasmer_value_tag *returns,
unsigned int returns_len);
/**
* Sets the params buffer to the parameter types of the given wasmer_import_func_t
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_import_func_params(const wasmer_import_func_t *func,
wasmer_value_tag *params,
unsigned int params_len);
/**
* Sets the result parameter to the arity of the params of the wasmer_import_func_t
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_import_func_params_arity(const wasmer_import_func_t *func, uint32_t *result);
/**
* Sets the returns buffer to the parameter types of the given wasmer_import_func_t
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_import_func_returns(const wasmer_import_func_t *func,
wasmer_value_tag *returns,
unsigned int returns_len);
/**
* Sets the result parameter to the arity of the returns of the wasmer_import_func_t
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_import_func_returns_arity(const wasmer_import_func_t *func,
uint32_t *result);
/**
* Calls an instances exported function by `name` with the provided parameters.
* Results are set using the provided `results` pointer.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_instance_call(wasmer_instance_t *instance,
const char *name,
const wasmer_value_t *params,
uint32_t params_len,
wasmer_value_t *results,
uint32_t results_len);
/**
* Gets the `data` field within the context.
*/
void *wasmer_instance_context_data_get(const wasmer_instance_context_t *ctx);
/**
* Sets the `data` field of the instance context. This context will be
* passed to all imported function for instance.
*/
void wasmer_instance_context_data_set(wasmer_instance_t *instance, void *data_ptr);
/**
* Gets the memory within the context at the index `memory_idx`.
* The index is always 0 until multiple memories are supported.
*/
const wasmer_memory_t *wasmer_instance_context_memory(const wasmer_instance_context_t *ctx,
uint32_t _memory_idx);
/**
* Frees memory for the given Instance
*/
void wasmer_instance_destroy(wasmer_instance_t *instance);
/**
* Gets Exports for the given instance
* The caller owns the object and should call `wasmer_exports_destroy` to free it.
*/
void wasmer_instance_exports(wasmer_instance_t *instance, wasmer_exports_t **exports);
/**
* Creates a new Instance from the given wasm bytes and imports.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_instantiate(wasmer_instance_t **instance,
uint8_t *wasm_bytes,
uint32_t wasm_bytes_len,
wasmer_import_t *imports,
int imports_len);
/**
* Gets the length in bytes of the last error.
* This can be used to dynamically allocate a buffer with the correct number of
* bytes needed to store a message.
* # Example
* ```c
* int error_len = wasmer_last_error_length();
* char *error_str = malloc(error_len);
* ```
*/
int wasmer_last_error_length(void);
/**
* Stores the last error message into the provided buffer up to the given `length`.
* The `length` parameter must be large enough to store the last error message.
* Returns the length of the string in bytes.
* Returns `-1` if an error occurs.
* # Example
* ```c
* int error_len = wasmer_last_error_length();
* char *error_str = malloc(error_len);
* wasmer_last_error_message(error_str, error_len);
* printf("Error str: `%s`\n", error_str);
* ```
*/
int wasmer_last_error_message(char *buffer, int length);
/**
* Gets the start pointer to the bytes within a Memory
*/
uint8_t *wasmer_memory_data(const wasmer_memory_t *mem);
/**
* Gets the size in bytes of a Memory
*/
uint32_t wasmer_memory_data_length(wasmer_memory_t *mem);
/**
* Frees memory for the given Memory
*/
void wasmer_memory_destroy(wasmer_memory_t *memory);
/**
* Grows a Memory by the given number of pages.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_memory_grow(wasmer_memory_t *memory, uint32_t delta);
/**
* Returns the current length in pages of the given memory
*/
uint32_t wasmer_memory_length(const wasmer_memory_t *memory);
/**
* Creates a new Memory for the given descriptor and initializes the given
* pointer to pointer to a pointer to the new memory.
* The caller owns the object and should call `wasmer_memory_destroy` to free it.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_memory_new(wasmer_memory_t **memory, wasmer_limits_t limits);
/**
* Deserialize the given serialized module.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_module_deserialize(wasmer_module_t **module,
const wasmer_serialized_module_t *serialized_module);
/**
* Frees memory for the given Module
*/
void wasmer_module_destroy(wasmer_module_t *module);
/**
* Creates a new Instance from the given module and imports.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_module_instantiate(const wasmer_module_t *module,
wasmer_instance_t **instance,
wasmer_import_t *imports,
int imports_len);
/**
* Serialize the given Module.
* The caller owns the object and should call `wasmer_serialized_module_destroy` to free it.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_module_serialize(wasmer_serialized_module_t **serialized_module,
const wasmer_module_t *module);
/**
* Get bytes of the serialized module.
*/
wasmer_byte_array wasmer_serialized_module_bytes(const wasmer_serialized_module_t *serialized_module);
/**
* Frees memory for the given serialized Module.
*/
void wasmer_serialized_module_destroy(wasmer_serialized_module_t *serialized_module);
/**
* Transform a sequence of bytes into a serialized module.
* The caller owns the object and should call `wasmer_serialized_module_destroy` to free it.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_serialized_module_from_bytes(wasmer_serialized_module_t **serialized_module,
const uint8_t *serialized_module_bytes,
uint32_t serialized_module_bytes_length);
/**
* Frees memory for the given Table
*/
void wasmer_table_destroy(wasmer_table_t *table);
/**
* Grows a Table by the given number of elements.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_table_grow(wasmer_table_t *table, uint32_t delta);
/**
* Returns the current length of the given Table
*/
uint32_t wasmer_table_length(wasmer_table_t *table);
/**
* Creates a new Table for the given descriptor and initializes the given
* pointer to pointer to a pointer to the new Table.
* The caller owns the object and should call `wasmer_table_destroy` to free it.
* Returns `wasmer_result_t::WASMER_OK` upon success.
* Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
* and `wasmer_last_error_message` to get an error message.
*/
wasmer_result_t wasmer_table_new(wasmer_table_t **table, wasmer_limits_t limits);
/**
* Adds a callinfo trampoline to the builder.
*/
uintptr_t wasmer_trampoline_buffer_builder_add_callinfo_trampoline(wasmer_trampoline_buffer_builder_t *builder,
const wasmer_trampoline_callable_t *func,
const void *ctx,
uint32_t num_params);
/**
* Adds a context trampoline to the builder.
*/
uintptr_t wasmer_trampoline_buffer_builder_add_context_trampoline(wasmer_trampoline_buffer_builder_t *builder,
const wasmer_trampoline_callable_t *func,
const void *ctx);
/**
* Finalizes the trampoline builder into an executable buffer.
*/
wasmer_trampoline_buffer_t *wasmer_trampoline_buffer_builder_build(wasmer_trampoline_buffer_builder_t *builder);
/**
* Creates a new trampoline builder.
*/
wasmer_trampoline_buffer_builder_t *wasmer_trampoline_buffer_builder_new(void);
/**
* Destroys the trampoline buffer if not null.
*/
void wasmer_trampoline_buffer_destroy(wasmer_trampoline_buffer_t *buffer);
/**
* Returns the callable pointer for the trampoline with index `idx`.
*/
const wasmer_trampoline_callable_t *wasmer_trampoline_buffer_get_trampoline(const wasmer_trampoline_buffer_t *buffer,
uintptr_t idx);
/**
* Returns the context added by `add_context_trampoline`, from within the callee function.
*/
void *wasmer_trampoline_get_context(void);
/**
* Returns true for valid wasm bytes and false for invalid bytes
*/
bool wasmer_validate(const uint8_t *wasm_bytes, uint32_t wasm_bytes_len);
#endif /* WASMER_H */