2019-02-01 05:51:34 +00:00
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extern crate wasmer_runtime;
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2019-02-02 23:43:59 +00:00
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extern crate wasmer_runtime_core;
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2019-02-01 05:51:34 +00:00
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2019-02-02 20:53:07 +00:00
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use libc::{c_char, c_int, int32_t, int64_t, uint32_t, uint8_t};
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2019-02-10 23:57:23 +00:00
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use std::cell::RefCell;
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2019-02-15 15:40:28 +00:00
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use std::collections::HashMap;
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2019-02-10 23:57:23 +00:00
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use std::error::Error;
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2019-02-02 06:26:10 +00:00
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use std::ffi::CStr;
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2019-02-14 02:02:11 +00:00
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use std::ffi::CString;
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2019-02-12 02:08:54 +00:00
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use std::fmt;
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2019-02-02 16:44:08 +00:00
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use std::slice;
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2019-02-02 06:26:10 +00:00
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use std::str;
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2019-02-02 23:43:59 +00:00
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use std::sync::Arc;
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use std::{ffi::c_void, mem, ptr};
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2019-02-16 01:47:00 +00:00
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use wasmer_runtime::{Ctx, Global, ImportObject, Instance, Memory, Module, Table, Value};
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2019-02-02 23:43:59 +00:00
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use wasmer_runtime_core::export::{Context, Export, FuncPointer};
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use wasmer_runtime_core::import::{LikeNamespace, Namespace};
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2019-02-09 23:39:15 +00:00
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use wasmer_runtime_core::types::{
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ElementType, FuncSig, GlobalDescriptor, MemoryDescriptor, TableDescriptor, Type,
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};
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2019-02-10 20:14:42 +00:00
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use wasmer_runtime_core::units::{Bytes, Pages};
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2019-02-01 05:51:34 +00:00
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#[allow(non_camel_case_types)]
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2019-02-02 00:52:22 +00:00
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pub struct wasmer_import_object_t();
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2019-02-01 05:51:34 +00:00
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2019-02-16 01:47:00 +00:00
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#[allow(non_camel_case_types)]
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pub struct wasmer_module_t();
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2019-02-01 05:51:34 +00:00
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#[allow(non_camel_case_types)]
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2019-02-02 00:52:22 +00:00
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pub struct wasmer_instance_t();
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2019-02-01 05:51:34 +00:00
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2019-02-02 23:43:59 +00:00
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#[allow(non_camel_case_types)]
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pub struct wasmer_instance_context_t();
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2019-02-01 05:51:34 +00:00
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#[allow(non_camel_case_types)]
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#[no_mangle]
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#[repr(C)]
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2019-02-12 01:07:28 +00:00
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pub enum wasmer_result_t {
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WASMER_OK = 1,
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WASMER_ERROR = 2,
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2019-02-09 19:37:07 +00:00
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}
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2019-02-02 20:53:07 +00:00
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#[repr(u32)]
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#[derive(Clone)]
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pub enum wasmer_value_tag {
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WASM_I32,
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WASM_I64,
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WASM_F32,
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WASM_F64,
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}
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#[repr(C)]
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#[derive(Clone, Copy)]
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pub union wasmer_value {
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I32: int32_t,
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I64: int64_t,
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F32: f32,
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F64: f64,
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}
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#[repr(C)]
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#[derive(Clone)]
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pub struct wasmer_value_t {
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tag: wasmer_value_tag,
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value: wasmer_value,
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}
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2019-02-09 23:39:15 +00:00
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#[repr(C)]
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#[derive(Clone)]
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pub struct wasmer_global_descriptor_t {
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mutable: bool,
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kind: wasmer_value_tag,
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}
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2019-02-02 23:43:59 +00:00
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#[repr(C)]
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#[derive(Clone)]
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2019-02-05 03:46:47 +00:00
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pub struct wasmer_memory_t();
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2019-02-09 19:37:07 +00:00
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#[repr(C)]
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#[derive(Clone)]
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pub struct wasmer_table_t();
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2019-02-05 03:46:47 +00:00
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2019-02-14 02:02:11 +00:00
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#[repr(C)]
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#[derive(Clone)]
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pub struct wasmer_func_t();
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2019-02-09 23:39:15 +00:00
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#[repr(C)]
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#[derive(Clone)]
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pub struct wasmer_global_t();
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2019-02-05 03:46:47 +00:00
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#[repr(C)]
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pub struct wasmer_limits_t {
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pub min: uint32_t,
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pub max: uint32_t,
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2019-02-02 23:43:59 +00:00
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}
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2019-02-14 02:02:11 +00:00
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#[repr(C)]
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pub struct wasmer_func_signature {
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pub params: *const wasmer_value_tag,
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pub params_len: c_int,
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pub returns: *const wasmer_value_tag,
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pub returns_len: c_int,
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}
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#[repr(C)]
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2019-02-15 15:40:28 +00:00
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pub struct wasmer_import_t {
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module_name: wasmer_byte_array,
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import_name: wasmer_byte_array,
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2019-02-14 02:02:11 +00:00
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tag: wasmer_import_export_kind,
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value: wasmer_import_export_value,
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}
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#[repr(C)]
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#[derive(Clone)]
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pub struct wasmer_export_t;
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#[repr(C)]
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#[derive(Clone)]
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pub struct wasmer_exports_t;
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#[repr(u32)]
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#[derive(Clone)]
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pub enum wasmer_import_export_kind {
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WASM_FUNCTION,
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WASM_GLOBAL,
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WASM_MEMORY,
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WASM_TABLE,
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}
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#[repr(C)]
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#[derive(Clone, Copy)]
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pub union wasmer_import_export_value {
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func: *const wasmer_func_t,
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table: *const wasmer_table_t,
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memory: *const wasmer_memory_t,
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global: *const wasmer_global_t,
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}
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2019-02-14 06:00:39 +00:00
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#[repr(C)]
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pub struct wasmer_byte_array {
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bytes: *const uint8_t,
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bytes_len: uint32_t,
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}
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2019-02-12 05:14:32 +00:00
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/// Returns true for valid wasm bytes and false for invalid bytes
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2019-02-05 06:01:01 +00:00
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#[allow(clippy::cast_ptr_alignment)]
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#[no_mangle]
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2019-02-09 19:09:54 +00:00
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pub unsafe extern "C" fn wasmer_validate(
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wasm_bytes: *mut uint8_t,
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wasm_bytes_len: uint32_t,
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) -> bool {
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2019-02-05 06:01:01 +00:00
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if wasm_bytes.is_null() {
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return false;
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}
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let bytes: &[u8] =
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unsafe { ::std::slice::from_raw_parts_mut(wasm_bytes, wasm_bytes_len as usize) };
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wasmer_runtime_core::validate(bytes)
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}
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2019-02-12 05:14:32 +00:00
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/// Creates a new Memory for the given descriptor and initializes the given
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/// pointer to pointer to a pointer to the new memory.
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///
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/// The caller owns the object and should call `wasmer_memory_destroy` to free it.
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///
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/// Returns `wasmer_result_t::WASMER_OK` upon success.
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///
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/// Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
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/// and `wasmer_last_error_message` to get an error message.
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2019-02-05 03:46:47 +00:00
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#[no_mangle]
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pub unsafe extern "C" fn wasmer_memory_new(
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mut memory: *mut *mut wasmer_memory_t,
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limits: wasmer_limits_t,
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2019-02-12 01:07:28 +00:00
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) -> wasmer_result_t {
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2019-02-05 03:46:47 +00:00
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let desc = MemoryDescriptor {
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minimum: Pages(limits.min),
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maximum: Some(Pages(limits.max)),
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shared: false,
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};
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let result = Memory::new(desc);
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let new_memory = match result {
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Ok(memory) => memory,
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Err(error) => {
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2019-02-10 23:57:23 +00:00
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update_last_error(error);
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2019-02-12 01:07:28 +00:00
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return wasmer_result_t::WASMER_ERROR;
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2019-02-05 03:46:47 +00:00
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}
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};
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unsafe { *memory = Box::into_raw(Box::new(new_memory)) as *mut wasmer_memory_t };
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2019-02-12 01:07:28 +00:00
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wasmer_result_t::WASMER_OK
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2019-02-05 03:46:47 +00:00
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}
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2019-02-12 05:14:32 +00:00
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/// Grows a Memory by the given number of pages.
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///
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/// Returns `wasmer_result_t::WASMER_OK` upon success.
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///
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/// Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
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/// and `wasmer_last_error_message` to get an error message.
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2019-02-09 23:53:03 +00:00
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#[allow(clippy::cast_ptr_alignment)]
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#[no_mangle]
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pub extern "C" fn wasmer_memory_grow(
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memory: *mut wasmer_memory_t,
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delta: uint32_t,
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2019-02-12 01:07:28 +00:00
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) -> wasmer_result_t {
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2019-02-09 23:53:03 +00:00
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let memory = unsafe { Box::from_raw(memory as *mut Memory) };
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let maybe_delta = memory.grow(Pages(delta));
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Box::into_raw(memory);
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if let Some(_delta) = maybe_delta {
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2019-02-12 01:07:28 +00:00
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wasmer_result_t::WASMER_OK
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2019-02-09 23:53:03 +00:00
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} else {
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2019-02-12 02:08:54 +00:00
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update_last_error(CApiError {
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msg: "unable to grow memory".to_string(),
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});
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2019-02-12 01:07:28 +00:00
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wasmer_result_t::WASMER_ERROR
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2019-02-09 23:53:03 +00:00
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}
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}
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2019-02-12 05:14:32 +00:00
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/// Returns the current length in pages of the given memory
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2019-02-05 03:46:47 +00:00
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#[allow(clippy::cast_ptr_alignment)]
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#[no_mangle]
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pub extern "C" fn wasmer_memory_length(memory: *mut wasmer_memory_t) -> uint32_t {
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let memory = unsafe { Box::from_raw(memory as *mut Memory) };
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let Pages(len) = memory.size();
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Box::into_raw(memory);
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len
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}
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2019-02-12 05:14:32 +00:00
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/// Creates a new Table for the given descriptor and initializes the given
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/// pointer to pointer to a pointer to the new Table.
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///
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/// The caller owns the object and should call `wasmer_table_destroy` to free it.
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///
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/// Returns `wasmer_result_t::WASMER_OK` upon success.
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///
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/// Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
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/// and `wasmer_last_error_message` to get an error message.
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2019-02-09 19:37:07 +00:00
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#[no_mangle]
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pub unsafe extern "C" fn wasmer_table_new(
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mut table: *mut *mut wasmer_table_t,
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limits: wasmer_limits_t,
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2019-02-12 01:07:28 +00:00
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) -> wasmer_result_t {
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2019-02-09 19:37:07 +00:00
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let desc = TableDescriptor {
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element: ElementType::Anyfunc,
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minimum: limits.min,
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maximum: Some(limits.max),
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};
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let result = Table::new(desc);
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let new_table = match result {
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Ok(table) => table,
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Err(error) => {
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2019-02-10 23:57:23 +00:00
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update_last_error(error);
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2019-02-12 01:07:28 +00:00
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return wasmer_result_t::WASMER_ERROR;
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2019-02-09 19:37:07 +00:00
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}
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};
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unsafe { *table = Box::into_raw(Box::new(new_table)) as *mut wasmer_table_t };
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2019-02-12 01:07:28 +00:00
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wasmer_result_t::WASMER_OK
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2019-02-09 19:37:07 +00:00
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}
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2019-02-12 05:14:32 +00:00
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/// Grows a Table by the given number of elements.
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///
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/// Returns `wasmer_result_t::WASMER_OK` upon success.
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///
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/// Returns `wasmer_result_t::WASMER_ERROR` upon failure. Use `wasmer_last_error_length`
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/// and `wasmer_last_error_message` to get an error message.
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2019-02-09 19:58:50 +00:00
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#[allow(clippy::cast_ptr_alignment)]
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#[no_mangle]
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pub extern "C" fn wasmer_table_grow(
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table: *mut wasmer_table_t,
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delta: uint32_t,
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2019-02-12 01:07:28 +00:00
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) -> wasmer_result_t {
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2019-02-09 19:58:50 +00:00
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let table = unsafe { Box::from_raw(table as *mut Table) };
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let maybe_delta = table.grow(delta);
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Box::into_raw(table);
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if let Some(_delta) = maybe_delta {
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2019-02-12 01:07:28 +00:00
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wasmer_result_t::WASMER_OK
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2019-02-09 19:58:50 +00:00
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} else {
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2019-02-12 02:08:54 +00:00
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update_last_error(CApiError {
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msg: "unable to grow table".to_string(),
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});
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2019-02-12 01:07:28 +00:00
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wasmer_result_t::WASMER_ERROR
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2019-02-09 19:58:50 +00:00
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}
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}
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2019-02-12 05:14:32 +00:00
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/// Returns the current length of the given Table
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2019-02-09 19:37:07 +00:00
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#[allow(clippy::cast_ptr_alignment)]
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#[no_mangle]
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pub extern "C" fn wasmer_table_length(table: *mut wasmer_table_t) -> uint32_t {
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let table = unsafe { Box::from_raw(table as *mut Table) };
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let len = table.size();
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Box::into_raw(table);
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len
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}
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2019-02-12 05:14:32 +00:00
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/// Frees memory for the given Table
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2019-02-09 19:37:07 +00:00
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#[allow(clippy::cast_ptr_alignment)]
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#[no_mangle]
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pub extern "C" fn wasmer_table_destroy(table: *mut wasmer_table_t) {
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if !table.is_null() {
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drop(unsafe { Box::from_raw(table as *mut Table) });
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}
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}
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2019-02-12 05:14:32 +00:00
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/// Creates a new Global and returns a pointer to it.
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/// The caller owns the object and should call `wasmer_global_destroy` to free it.
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2019-02-09 23:39:15 +00:00
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#[no_mangle]
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|
|
pub unsafe extern "C" fn wasmer_global_new(
|
|
|
|
value: wasmer_value_t,
|
|
|
|
mutable: bool,
|
|
|
|
) -> *mut wasmer_global_t {
|
|
|
|
let global = if mutable {
|
|
|
|
Global::new_mutable(value.into())
|
|
|
|
} else {
|
|
|
|
Global::new(value.into())
|
|
|
|
};
|
|
|
|
unsafe { Box::into_raw(Box::new(global)) as *mut wasmer_global_t }
|
|
|
|
}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// Gets the value stored by the given Global
|
2019-02-09 23:39:15 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_global_get(global: *mut wasmer_global_t) -> wasmer_value_t {
|
|
|
|
let global = unsafe { Box::from_raw(global as *mut Global) };
|
|
|
|
let value: wasmer_value_t = global.get().into();
|
|
|
|
Box::into_raw(global);
|
|
|
|
value
|
|
|
|
}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// Sets the value stored by the given Global
|
2019-02-09 23:39:15 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_global_set(global: *mut wasmer_global_t, value: wasmer_value_t) {
|
|
|
|
let global = unsafe { Box::from_raw(global as *mut Global) };
|
|
|
|
global.set(value.into());
|
|
|
|
Box::into_raw(global);
|
|
|
|
}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// Returns a descriptor (type, mutability) of the given Global
|
2019-02-09 23:39:15 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_global_get_descriptor(
|
|
|
|
global: *mut wasmer_global_t,
|
|
|
|
) -> wasmer_global_descriptor_t {
|
|
|
|
let global = unsafe { Box::from_raw(global as *mut Global) };
|
|
|
|
let descriptor = global.descriptor();
|
|
|
|
let desc = wasmer_global_descriptor_t {
|
|
|
|
mutable: descriptor.mutable,
|
|
|
|
kind: descriptor.ty.into(),
|
|
|
|
};
|
|
|
|
Box::into_raw(global);
|
|
|
|
desc
|
|
|
|
}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// Frees memory for the given Global
|
2019-02-09 23:39:15 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_global_destroy(global: *mut wasmer_global_t) {
|
|
|
|
if !global.is_null() {
|
|
|
|
drop(unsafe { Box::from_raw(global as *mut Global) });
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// Frees memory for the given Memory
|
2019-02-02 04:10:36 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
2019-02-05 03:46:47 +00:00
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_memory_destroy(memory: *mut wasmer_memory_t) {
|
|
|
|
if !memory.is_null() {
|
|
|
|
drop(unsafe { Box::from_raw(memory as *mut Memory) });
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-02-16 01:47:00 +00:00
|
|
|
/// 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.
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub unsafe extern "C" fn wasmer_compile(
|
|
|
|
mut module: *mut *mut wasmer_module_t,
|
|
|
|
wasm_bytes: *mut uint8_t,
|
|
|
|
wasm_bytes_len: uint32_t,
|
|
|
|
) -> wasmer_result_t {
|
|
|
|
let bytes: &[u8] =
|
|
|
|
unsafe { ::std::slice::from_raw_parts_mut(wasm_bytes, wasm_bytes_len as usize) };
|
|
|
|
let result = wasmer_runtime::compile(bytes);
|
|
|
|
let new_module = match result {
|
|
|
|
Ok(instance) => instance,
|
|
|
|
Err(error) => {
|
|
|
|
update_last_error(error);
|
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
unsafe { *module = Box::into_raw(Box::new(new_module)) as *mut wasmer_module_t };
|
|
|
|
wasmer_result_t::WASMER_OK
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Frees memory for the given Module
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_module_destroy(module: *mut wasmer_module_t) {
|
|
|
|
if !module.is_null() {
|
|
|
|
drop(unsafe { Box::from_raw(module as *mut Module) });
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// 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.
|
2019-02-05 03:46:47 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
2019-02-01 05:51:34 +00:00
|
|
|
#[no_mangle]
|
2019-02-02 14:43:29 +00:00
|
|
|
pub unsafe extern "C" fn wasmer_instantiate(
|
|
|
|
mut instance: *mut *mut wasmer_instance_t,
|
2019-02-02 06:26:10 +00:00
|
|
|
wasm_bytes: *mut uint8_t,
|
|
|
|
wasm_bytes_len: uint32_t,
|
2019-02-15 15:40:28 +00:00
|
|
|
imports: *mut wasmer_import_t,
|
|
|
|
imports_len: c_int,
|
2019-02-12 01:07:28 +00:00
|
|
|
) -> wasmer_result_t {
|
2019-02-02 06:26:10 +00:00
|
|
|
if wasm_bytes.is_null() {
|
2019-02-12 02:08:54 +00:00
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "wasm bytes ptr is null".to_string(),
|
|
|
|
});
|
2019-02-12 01:07:28 +00:00
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
2019-02-02 06:26:10 +00:00
|
|
|
}
|
2019-02-15 15:40:28 +00:00
|
|
|
let imports: &[wasmer_import_t] = slice::from_raw_parts(imports, imports_len as usize);
|
|
|
|
let mut import_object = ImportObject::new();
|
|
|
|
let mut namespaces = HashMap::new();
|
|
|
|
for import in imports {
|
|
|
|
let module_name = slice::from_raw_parts(
|
|
|
|
import.module_name.bytes,
|
|
|
|
import.module_name.bytes_len as usize,
|
|
|
|
);
|
|
|
|
let module_name = if let Ok(s) = std::str::from_utf8(module_name) {
|
|
|
|
s
|
|
|
|
} else {
|
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "error converting module name to string".to_string(),
|
|
|
|
});
|
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
|
|
|
};
|
|
|
|
let import_name = slice::from_raw_parts(
|
|
|
|
import.import_name.bytes,
|
|
|
|
import.import_name.bytes_len as usize,
|
|
|
|
);
|
|
|
|
let import_name = if let Ok(s) = std::str::from_utf8(import_name) {
|
|
|
|
s
|
|
|
|
} else {
|
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "error converting import_name to string".to_string(),
|
|
|
|
});
|
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
|
|
|
};
|
|
|
|
|
|
|
|
let namespace = namespaces
|
|
|
|
.entry(module_name)
|
|
|
|
.or_insert_with(|| Namespace::new());
|
|
|
|
|
|
|
|
let export = match import.tag {
|
|
|
|
wasmer_import_export_kind::WASM_MEMORY => import.value.memory as *mut Export,
|
|
|
|
wasmer_import_export_kind::WASM_FUNCTION => import.value.func as *mut Export,
|
|
|
|
wasmer_import_export_kind::WASM_GLOBAL => import.value.global as *mut Export,
|
|
|
|
wasmer_import_export_kind::WASM_TABLE => import.value.table as *mut Export,
|
|
|
|
};
|
|
|
|
namespace.insert(import_name, unsafe { *Box::from_raw(export) });
|
|
|
|
}
|
|
|
|
for (module_name, namespace) in namespaces.into_iter() {
|
|
|
|
import_object.register(module_name, namespace);
|
|
|
|
}
|
|
|
|
|
2019-02-02 14:43:29 +00:00
|
|
|
let bytes: &[u8] =
|
|
|
|
unsafe { ::std::slice::from_raw_parts_mut(wasm_bytes, wasm_bytes_len as usize) };
|
2019-02-15 15:40:28 +00:00
|
|
|
let result = wasmer_runtime::instantiate(bytes, &import_object);
|
2019-02-01 05:51:34 +00:00
|
|
|
let new_instance = match result {
|
|
|
|
Ok(instance) => instance,
|
2019-02-02 06:26:10 +00:00
|
|
|
Err(error) => {
|
2019-02-12 02:08:54 +00:00
|
|
|
// TODO the trait bound `wasmer_runtime::error::Error: std::error::Error` is not satisfied
|
|
|
|
//update_last_error(error);
|
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "error instantiating".to_string(),
|
|
|
|
});
|
2019-02-12 01:07:28 +00:00
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
2019-02-02 14:43:29 +00:00
|
|
|
}
|
2019-02-01 05:51:34 +00:00
|
|
|
};
|
2019-02-02 14:43:29 +00:00
|
|
|
unsafe { *instance = Box::into_raw(Box::new(new_instance)) as *mut wasmer_instance_t };
|
2019-02-15 15:40:28 +00:00
|
|
|
Box::into_raw(Box::new(import_object));
|
2019-02-12 01:07:28 +00:00
|
|
|
wasmer_result_t::WASMER_OK
|
2019-02-01 05:51:34 +00:00
|
|
|
}
|
2019-02-02 06:26:10 +00:00
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// 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.
|
2019-02-02 06:26:10 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
2019-02-02 14:43:29 +00:00
|
|
|
pub unsafe extern "C" fn wasmer_instance_call(
|
|
|
|
instance: *mut wasmer_instance_t,
|
|
|
|
name: *const c_char,
|
2019-02-02 20:53:07 +00:00
|
|
|
params: *const wasmer_value_t,
|
2019-02-02 16:44:08 +00:00
|
|
|
params_len: c_int,
|
2019-02-02 20:53:07 +00:00
|
|
|
results: *mut wasmer_value_t,
|
2019-02-02 16:44:08 +00:00
|
|
|
results_len: c_int,
|
2019-02-12 01:07:28 +00:00
|
|
|
) -> wasmer_result_t {
|
2019-02-02 14:43:29 +00:00
|
|
|
if instance.is_null() {
|
2019-02-12 02:08:54 +00:00
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "instance ptr is null".to_string(),
|
|
|
|
});
|
2019-02-12 01:07:28 +00:00
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
2019-02-02 06:26:10 +00:00
|
|
|
}
|
2019-02-02 14:43:29 +00:00
|
|
|
if name.is_null() {
|
2019-02-12 02:08:54 +00:00
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "name ptr is null".to_string(),
|
|
|
|
});
|
2019-02-12 01:07:28 +00:00
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
2019-02-02 06:26:10 +00:00
|
|
|
}
|
2019-02-02 16:44:08 +00:00
|
|
|
if params.is_null() {
|
2019-02-12 02:08:54 +00:00
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "params ptr is null".to_string(),
|
|
|
|
});
|
2019-02-12 01:07:28 +00:00
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
2019-02-02 16:44:08 +00:00
|
|
|
}
|
|
|
|
|
2019-02-02 20:53:07 +00:00
|
|
|
let params: &[wasmer_value_t] = slice::from_raw_parts(params, params_len as usize);
|
|
|
|
let params: Vec<Value> = params.iter().cloned().map(|x| x.into()).collect();
|
2019-02-02 16:44:08 +00:00
|
|
|
|
2019-02-02 14:43:29 +00:00
|
|
|
let func_name_c = unsafe { CStr::from_ptr(name) };
|
2019-02-02 06:26:10 +00:00
|
|
|
let func_name_r = func_name_c.to_str().unwrap();
|
|
|
|
let instance = unsafe { Box::from_raw(instance as *mut Instance) };
|
2019-02-02 16:44:08 +00:00
|
|
|
|
2019-02-02 20:53:07 +00:00
|
|
|
let results: &mut [wasmer_value_t] = slice::from_raw_parts_mut(results, results_len as usize);
|
2019-02-02 16:44:08 +00:00
|
|
|
let result = instance.call(func_name_r, ¶ms[..]);
|
2019-02-02 23:43:59 +00:00
|
|
|
Box::into_raw(instance);
|
2019-02-02 06:26:10 +00:00
|
|
|
match result {
|
2019-02-02 20:53:07 +00:00
|
|
|
Ok(results_vec) => {
|
|
|
|
if results_vec.len() > 0 {
|
|
|
|
let ret = match results_vec[0] {
|
|
|
|
Value::I32(x) => wasmer_value_t {
|
|
|
|
tag: wasmer_value_tag::WASM_I32,
|
|
|
|
value: wasmer_value { I32: x },
|
|
|
|
},
|
|
|
|
Value::I64(x) => wasmer_value_t {
|
|
|
|
tag: wasmer_value_tag::WASM_I64,
|
|
|
|
value: wasmer_value { I64: x },
|
|
|
|
},
|
|
|
|
Value::F32(x) => wasmer_value_t {
|
|
|
|
tag: wasmer_value_tag::WASM_F32,
|
|
|
|
value: wasmer_value { F32: x },
|
|
|
|
},
|
|
|
|
Value::F64(x) => wasmer_value_t {
|
|
|
|
tag: wasmer_value_tag::WASM_F64,
|
|
|
|
value: wasmer_value { F64: x },
|
|
|
|
},
|
|
|
|
};
|
|
|
|
results[0] = ret;
|
2019-02-02 16:44:08 +00:00
|
|
|
}
|
2019-02-12 01:07:28 +00:00
|
|
|
wasmer_result_t::WASMER_OK
|
2019-02-02 14:43:29 +00:00
|
|
|
}
|
2019-02-02 06:26:10 +00:00
|
|
|
Err(err) => {
|
2019-02-10 23:57:23 +00:00
|
|
|
update_last_error(err);
|
2019-02-12 01:07:28 +00:00
|
|
|
wasmer_result_t::WASMER_ERROR
|
2019-02-02 06:26:10 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-02-14 02:02:11 +00:00
|
|
|
/// Gets Exports for the given instance
|
|
|
|
///
|
|
|
|
/// The caller owns the object and should call `wasmer_exports_destroy` to free it.
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub unsafe extern "C" fn wasmer_instance_exports(
|
|
|
|
instance: *mut wasmer_instance_t,
|
|
|
|
exports: *mut *mut wasmer_exports_t,
|
|
|
|
) {
|
|
|
|
let mut instance = unsafe { Box::from_raw(instance as *mut Instance) };
|
|
|
|
let named_exports: Box<NamedExports> =
|
|
|
|
Box::new(NamedExports(instance.exports().map(|e| e.into()).collect()));
|
|
|
|
unsafe { *exports = Box::into_raw(named_exports) as *mut wasmer_exports_t };
|
|
|
|
Box::into_raw(instance);
|
|
|
|
}
|
|
|
|
|
|
|
|
pub struct NamedExports(Vec<NamedExport>);
|
|
|
|
|
|
|
|
/// Frees the memory for the given exports
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub unsafe extern "C" fn wasmer_exports_destroy(exports: *mut wasmer_exports_t) {
|
|
|
|
if !exports.is_null() {
|
|
|
|
drop(unsafe { Box::from_raw(exports as *mut NamedExports) });
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Gets the length of the exports
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub unsafe extern "C" fn wasmer_exports_len(exports: *mut wasmer_exports_t) -> c_int {
|
|
|
|
if exports.is_null() {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
(*(exports as *mut NamedExports)).0.len() as c_int
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Gets wasmer_export by index
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub unsafe extern "C" fn wasmer_exports_get(
|
|
|
|
exports: *mut wasmer_exports_t,
|
|
|
|
idx: c_int,
|
|
|
|
) -> *mut wasmer_export_t {
|
|
|
|
if exports.is_null() {
|
|
|
|
return ptr::null_mut();
|
|
|
|
}
|
|
|
|
let mut named_exports = unsafe { Box::from_raw(exports as *mut NamedExports) };
|
|
|
|
let ptr = &mut (*named_exports).0[idx as usize] as *mut NamedExport as *mut wasmer_export_t;
|
|
|
|
Box::into_raw(named_exports);
|
|
|
|
ptr
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Gets wasmer_export kind
|
|
|
|
#[no_mangle]
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
pub unsafe extern "C" fn wasmer_export_kind(
|
|
|
|
export: *mut wasmer_export_t,
|
|
|
|
) -> wasmer_import_export_kind {
|
|
|
|
let named_export = &*(export as *mut NamedExport);
|
|
|
|
match named_export.export {
|
|
|
|
Export::Table(_) => wasmer_import_export_kind::WASM_TABLE,
|
|
|
|
Export::Function { .. } => wasmer_import_export_kind::WASM_FUNCTION,
|
|
|
|
Export::Global(_) => wasmer_import_export_kind::WASM_GLOBAL,
|
|
|
|
Export::Memory(_) => wasmer_import_export_kind::WASM_MEMORY,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-02-15 15:40:28 +00:00
|
|
|
/// Creates new func
|
|
|
|
///
|
|
|
|
/// The caller owns the object and should call `wasmer_func_destroy` to free it.
|
|
|
|
#[no_mangle]
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
pub unsafe extern "C" fn wasmer_func_new(
|
|
|
|
func: extern "C" fn(data: *mut c_void),
|
|
|
|
params: *const wasmer_value_tag,
|
|
|
|
params_len: c_int,
|
|
|
|
returns: *const wasmer_value_tag,
|
|
|
|
returns_len: c_int,
|
|
|
|
) -> *const wasmer_func_t {
|
|
|
|
let params: &[wasmer_value_tag] = slice::from_raw_parts(params, params_len as usize);
|
|
|
|
let params: Vec<Type> = params.iter().cloned().map(|x| x.into()).collect();
|
|
|
|
let returns: &[wasmer_value_tag] = slice::from_raw_parts(returns, returns_len as usize);
|
|
|
|
let returns: Vec<Type> = returns.iter().cloned().map(|x| x.into()).collect();
|
|
|
|
|
|
|
|
let export = Box::new(Export::Function {
|
|
|
|
func: unsafe { FuncPointer::new(func as _) },
|
|
|
|
ctx: Context::Internal,
|
|
|
|
signature: Arc::new(FuncSig::new(params, returns)),
|
|
|
|
});
|
|
|
|
Box::into_raw(export) as *mut wasmer_func_t
|
|
|
|
}
|
|
|
|
|
2019-02-17 20:12:05 +00:00
|
|
|
/// Sets the result parameter to the arity of the params of the wasmer_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.
|
|
|
|
#[no_mangle]
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
pub unsafe extern "C" fn wasmer_func_params_arity(
|
|
|
|
func: *mut wasmer_func_t,
|
|
|
|
result: *mut uint32_t,
|
|
|
|
) -> wasmer_result_t {
|
|
|
|
let mut export = unsafe { Box::from_raw(func as *mut Export) };
|
|
|
|
let result = if let Export::Function { ref signature, .. } = *export {
|
|
|
|
unsafe { *result = signature.params().len() as uint32_t };
|
|
|
|
wasmer_result_t::WASMER_OK
|
|
|
|
} else {
|
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "func ptr error in wasmer_func_params_arity".to_string(),
|
|
|
|
});
|
|
|
|
wasmer_result_t::WASMER_ERROR
|
|
|
|
};
|
|
|
|
Box::into_raw(export);
|
|
|
|
result
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Sets the params buffer to the parameter types of the given wasmer_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.
|
|
|
|
#[no_mangle]
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
pub unsafe extern "C" fn wasmer_func_params(
|
|
|
|
func: *mut wasmer_func_t,
|
|
|
|
params: *mut wasmer_value_tag,
|
|
|
|
params_len: c_int,
|
|
|
|
) -> wasmer_result_t {
|
|
|
|
let mut export = unsafe { Box::from_raw(func as *mut Export) };
|
|
|
|
let result = if let Export::Function { ref signature, .. } = *export {
|
|
|
|
let params: &mut [wasmer_value_tag] =
|
|
|
|
slice::from_raw_parts_mut(params, params_len as usize);
|
|
|
|
for (i, item) in signature.params().iter().enumerate() {
|
|
|
|
params[i] = item.into();
|
|
|
|
}
|
|
|
|
wasmer_result_t::WASMER_OK
|
|
|
|
} else {
|
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "func ptr error in wasmer_func_params".to_string(),
|
|
|
|
});
|
|
|
|
wasmer_result_t::WASMER_ERROR
|
|
|
|
};
|
|
|
|
Box::into_raw(export);
|
|
|
|
result
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Sets the returns buffer to the parameter types of the given wasmer_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.
|
|
|
|
#[no_mangle]
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
pub unsafe extern "C" fn wasmer_func_returns(
|
|
|
|
func: *mut wasmer_func_t,
|
|
|
|
returns: *mut wasmer_value_tag,
|
|
|
|
returns_len: c_int,
|
|
|
|
) -> wasmer_result_t {
|
|
|
|
let mut export = unsafe { Box::from_raw(func as *mut Export) };
|
|
|
|
let result = if let Export::Function { ref signature, .. } = *export {
|
|
|
|
let returns: &mut [wasmer_value_tag] =
|
|
|
|
slice::from_raw_parts_mut(returns, returns_len as usize);
|
|
|
|
for (i, item) in signature.returns().iter().enumerate() {
|
|
|
|
returns[i] = item.into();
|
|
|
|
}
|
|
|
|
wasmer_result_t::WASMER_OK
|
|
|
|
} else {
|
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "func ptr error in wasmer_func_returns".to_string(),
|
|
|
|
});
|
|
|
|
wasmer_result_t::WASMER_ERROR
|
|
|
|
};
|
|
|
|
Box::into_raw(export);
|
|
|
|
result
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Sets the result parameter to the arity of the returns of the wasmer_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.
|
|
|
|
#[no_mangle]
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
pub unsafe extern "C" fn wasmer_func_returns_arity(
|
|
|
|
func: *mut wasmer_func_t,
|
|
|
|
result: *mut uint32_t,
|
|
|
|
) -> wasmer_result_t {
|
|
|
|
let mut export = unsafe { Box::from_raw(func as *mut Export) };
|
|
|
|
let result = if let Export::Function { ref signature, .. } = *export {
|
|
|
|
unsafe { *result = signature.returns().len() as uint32_t };
|
|
|
|
wasmer_result_t::WASMER_OK
|
|
|
|
} else {
|
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "func ptr error in wasmer_func_results_arity".to_string(),
|
|
|
|
});
|
|
|
|
wasmer_result_t::WASMER_ERROR
|
|
|
|
};
|
|
|
|
Box::into_raw(export);
|
|
|
|
result
|
|
|
|
}
|
|
|
|
|
2019-02-15 15:40:28 +00:00
|
|
|
/// Frees memory for the given Func
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_func_destroy(func: *mut wasmer_func_t) {
|
|
|
|
if !func.is_null() {
|
|
|
|
drop(unsafe { Box::from_raw(func as *mut Export) });
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-02-14 06:00:39 +00:00
|
|
|
/// Gets func from wasm_export
|
|
|
|
#[no_mangle]
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
pub unsafe extern "C" fn wasmer_export_to_func(
|
|
|
|
export: *mut wasmer_export_t,
|
|
|
|
) -> *const wasmer_func_t {
|
|
|
|
let named_export = &*(export as *mut NamedExport);
|
|
|
|
&named_export.export as *const Export as *const wasmer_func_t
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Gets name from wasmer_export
|
|
|
|
#[no_mangle]
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
pub unsafe extern "C" fn wasmer_export_name(export: *mut wasmer_export_t) -> wasmer_byte_array {
|
|
|
|
let named_export = &*(export as *mut NamedExport);
|
|
|
|
wasmer_byte_array {
|
|
|
|
bytes: named_export.name.as_ptr(),
|
|
|
|
bytes_len: named_export.name.len() as u32,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// 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.
|
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub unsafe extern "C" fn wasmer_func_call(
|
|
|
|
func: *mut wasmer_func_t,
|
|
|
|
params: *const wasmer_value_t,
|
|
|
|
params_len: c_int,
|
|
|
|
results: *mut wasmer_value_t,
|
|
|
|
results_len: c_int,
|
|
|
|
) -> wasmer_result_t {
|
|
|
|
if func.is_null() {
|
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "func ptr is null".to_string(),
|
|
|
|
});
|
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
|
|
|
}
|
|
|
|
if params.is_null() {
|
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "params ptr is null".to_string(),
|
|
|
|
});
|
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
|
|
|
}
|
|
|
|
|
|
|
|
let params: &[wasmer_value_t] = slice::from_raw_parts(params, params_len as usize);
|
|
|
|
let params: Vec<Value> = params.iter().cloned().map(|x| x.into()).collect();
|
|
|
|
|
|
|
|
let export_func = unsafe { Box::from_raw(func as *mut Export) };
|
|
|
|
|
|
|
|
let results: &mut [wasmer_value_t] = slice::from_raw_parts_mut(results, results_len as usize);
|
|
|
|
// TODO implement func.call
|
|
|
|
update_last_error(CApiError {
|
|
|
|
msg: "wasmer_func_call not yet implemented".to_string(),
|
|
|
|
});
|
|
|
|
return wasmer_result_t::WASMER_ERROR;
|
|
|
|
// let result = instance.call(func_name_r, ¶ms[..]);
|
|
|
|
// Box::into_raw(export_func);
|
|
|
|
// match result {
|
|
|
|
// Ok(results_vec) => {
|
|
|
|
// if results_vec.len() > 0 {
|
|
|
|
// let ret = match results_vec[0] {
|
|
|
|
// Value::I32(x) => wasmer_value_t {
|
|
|
|
// tag: wasmer_value_tag::WASM_I32,
|
|
|
|
// value: wasmer_value { I32: x },
|
|
|
|
// },
|
|
|
|
// Value::I64(x) => wasmer_value_t {
|
|
|
|
// tag: wasmer_value_tag::WASM_I64,
|
|
|
|
// value: wasmer_value { I64: x },
|
|
|
|
// },
|
|
|
|
// Value::F32(x) => wasmer_value_t {
|
|
|
|
// tag: wasmer_value_tag::WASM_F32,
|
|
|
|
// value: wasmer_value { F32: x },
|
|
|
|
// },
|
|
|
|
// Value::F64(x) => wasmer_value_t {
|
|
|
|
// tag: wasmer_value_tag::WASM_F64,
|
|
|
|
// value: wasmer_value { F64: x },
|
|
|
|
// },
|
|
|
|
// };
|
|
|
|
// results[0] = ret;
|
|
|
|
// }
|
|
|
|
// wasmer_result_t::WASMER_OK
|
|
|
|
// }
|
|
|
|
// Err(err) => {
|
|
|
|
// update_last_error(err);
|
|
|
|
// wasmer_result_t::WASMER_ERROR
|
|
|
|
// }
|
|
|
|
// }
|
|
|
|
}
|
|
|
|
|
2019-02-14 02:02:11 +00:00
|
|
|
///// Gets wasmer_export func
|
|
|
|
//#[no_mangle]
|
|
|
|
//pub unsafe extern "C" fn wasmer_export_name(export: *mut wasmer_export_t) {
|
|
|
|
// if exports.is_null() {
|
|
|
|
// return ptr::null_mut();
|
|
|
|
// }
|
|
|
|
// let named_export = &*(export as *mut NamedExport);
|
|
|
|
//}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// Gets the memory within the context at the index `memory_idx`.
|
|
|
|
/// The index is always 0 until multiple memories are supported.
|
2019-02-10 20:24:36 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
2019-02-02 23:43:59 +00:00
|
|
|
#[no_mangle]
|
2019-02-10 20:24:36 +00:00
|
|
|
pub extern "C" fn wasmer_instance_context_memory(
|
|
|
|
ctx: *mut wasmer_instance_context_t,
|
|
|
|
memory_idx: uint32_t,
|
|
|
|
) -> *const wasmer_memory_t {
|
|
|
|
let mut ctx = unsafe { Box::from_raw(ctx as *mut Ctx) };
|
|
|
|
let memory = ctx.memory(0);
|
|
|
|
memory as *const Memory as *const wasmer_memory_t
|
|
|
|
}
|
2019-02-02 23:43:59 +00:00
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// Gets the start pointer to the bytes within a Memory
|
2019-02-10 21:20:35 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_memory_data(mem: *mut wasmer_memory_t) -> *mut uint8_t {
|
|
|
|
let memory = mem as *mut Memory;
|
|
|
|
use std::cell::Cell;
|
|
|
|
unsafe { ((*memory).view::<u8>()[..]).as_ptr() as *mut Cell<u8> as *mut u8 }
|
|
|
|
}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// Gets the size in bytes of a Memory
|
2019-02-10 20:14:42 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_memory_data_length(mem: *mut wasmer_memory_t) -> uint32_t {
|
|
|
|
let memory = mem as *mut Memory;
|
|
|
|
let Bytes(len) = unsafe { (*memory).size().bytes() };
|
|
|
|
len as uint32_t
|
|
|
|
}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// Frees memory for the given Instance
|
2019-02-02 06:26:10 +00:00
|
|
|
#[allow(clippy::cast_ptr_alignment)]
|
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_instance_destroy(instance: *mut wasmer_instance_t) {
|
|
|
|
if !instance.is_null() {
|
|
|
|
drop(unsafe { Box::from_raw(instance as *mut Instance) });
|
|
|
|
}
|
2019-02-02 14:43:29 +00:00
|
|
|
}
|
2019-02-02 20:53:07 +00:00
|
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|
|
|
|
|
impl From<wasmer_value_t> for Value {
|
|
|
|
fn from(v: wasmer_value_t) -> Self {
|
|
|
|
unsafe {
|
|
|
|
match v {
|
|
|
|
wasmer_value_t {
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|
|
|
tag: WASM_I32,
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|
|
value: wasmer_value { I32 },
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|
|
} => Value::I32(I32),
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|
|
wasmer_value_t {
|
|
|
|
tag: WASM_I64,
|
|
|
|
value: wasmer_value { I64 },
|
|
|
|
} => Value::I64(I64),
|
|
|
|
wasmer_value_t {
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|
|
|
tag: WASM_F32,
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|
|
value: wasmer_value { F32 },
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|
|
} => Value::F32(F32),
|
|
|
|
wasmer_value_t {
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|
|
|
tag: WASM_F64,
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|
|
value: wasmer_value { F64 },
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|
|
} => Value::F64(F64),
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|
|
|
_ => panic!("not implemented"),
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2019-02-03 01:10:08 +00:00
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|
|
2019-02-09 23:39:15 +00:00
|
|
|
impl From<Value> for wasmer_value_t {
|
|
|
|
fn from(val: Value) -> Self {
|
|
|
|
match val {
|
|
|
|
Value::I32(x) => wasmer_value_t {
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|
|
|
tag: wasmer_value_tag::WASM_I32,
|
|
|
|
value: wasmer_value { I32: x },
|
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|
|
},
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|
|
|
Value::I64(x) => wasmer_value_t {
|
|
|
|
tag: wasmer_value_tag::WASM_I64,
|
|
|
|
value: wasmer_value { I64: x },
|
|
|
|
},
|
|
|
|
Value::F32(x) => wasmer_value_t {
|
|
|
|
tag: wasmer_value_tag::WASM_F32,
|
|
|
|
value: wasmer_value { F32: x },
|
|
|
|
},
|
|
|
|
Value::F64(x) => wasmer_value_t {
|
|
|
|
tag: wasmer_value_tag::WASM_F64,
|
|
|
|
value: wasmer_value { F64: x },
|
|
|
|
},
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl From<Type> for wasmer_value_tag {
|
|
|
|
fn from(ty: Type) -> Self {
|
|
|
|
match ty {
|
|
|
|
Type::I32 => wasmer_value_tag::WASM_I32,
|
|
|
|
Type::I64 => wasmer_value_tag::WASM_I64,
|
|
|
|
Type::F32 => wasmer_value_tag::WASM_F32,
|
|
|
|
Type::F64 => wasmer_value_tag::WASM_F64,
|
|
|
|
_ => panic!("not implemented"),
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-02-03 01:10:08 +00:00
|
|
|
impl From<wasmer_value_tag> for Type {
|
|
|
|
fn from(v: wasmer_value_tag) -> Self {
|
|
|
|
unsafe {
|
|
|
|
match v {
|
|
|
|
wasmer_value_tag::WASM_I32 => Type::I32,
|
|
|
|
wasmer_value_tag::WASM_I64 => Type::I64,
|
|
|
|
wasmer_value_tag::WASM_F32 => Type::F32,
|
|
|
|
wasmer_value_tag::WASM_F64 => Type::F64,
|
|
|
|
_ => panic!("not implemented"),
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2019-02-10 23:57:23 +00:00
|
|
|
|
2019-02-14 02:02:11 +00:00
|
|
|
impl From<(std::string::String, wasmer_runtime_core::export::Export)> for NamedExport {
|
|
|
|
fn from((name, export): (String, Export)) -> Self {
|
|
|
|
NamedExport { name, export }
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-02-17 20:12:05 +00:00
|
|
|
impl From<&wasmer_runtime::wasm::Type> for wasmer_value_tag {
|
|
|
|
fn from(ty: &Type) -> Self {
|
|
|
|
match *ty {
|
|
|
|
Type::I32 => wasmer_value_tag::WASM_I32,
|
|
|
|
Type::I64 => wasmer_value_tag::WASM_I64,
|
|
|
|
Type::F32 => wasmer_value_tag::WASM_F32,
|
|
|
|
Type::F64 => wasmer_value_tag::WASM_F64,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-02-10 23:57:23 +00:00
|
|
|
// Error reporting
|
|
|
|
|
|
|
|
thread_local! {
|
|
|
|
static LAST_ERROR: RefCell<Option<Box<Error>>> = RefCell::new(None);
|
|
|
|
}
|
|
|
|
|
|
|
|
fn update_last_error<E: Error + 'static>(err: E) {
|
|
|
|
LAST_ERROR.with(|prev| {
|
|
|
|
*prev.borrow_mut() = Some(Box::new(err));
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Retrieve the most recent error, clearing it in the process.
|
|
|
|
fn take_last_error() -> Option<Box<Error>> {
|
|
|
|
LAST_ERROR.with(|prev| prev.borrow_mut().take())
|
|
|
|
}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// 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
|
|
|
|
/// ```
|
|
|
|
/// int error_len = wasmer_last_error_length();
|
|
|
|
/// char *error_str = malloc(error_len);
|
|
|
|
/// ```
|
2019-02-10 23:57:23 +00:00
|
|
|
#[no_mangle]
|
|
|
|
pub extern "C" fn wasmer_last_error_length() -> c_int {
|
|
|
|
LAST_ERROR.with(|prev| match *prev.borrow() {
|
|
|
|
Some(ref err) => err.to_string().len() as c_int + 1,
|
|
|
|
None => 0,
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
2019-02-12 05:14:32 +00:00
|
|
|
/// 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
|
|
|
|
/// ```
|
|
|
|
/// 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);
|
|
|
|
/// ```
|
2019-02-10 23:57:23 +00:00
|
|
|
#[no_mangle]
|
|
|
|
pub unsafe extern "C" fn wasmer_last_error_message(buffer: *mut c_char, length: c_int) -> c_int {
|
|
|
|
if buffer.is_null() {
|
|
|
|
// buffer pointer is null
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
let last_error = match take_last_error() {
|
|
|
|
Some(err) => err,
|
|
|
|
None => return 0,
|
|
|
|
};
|
|
|
|
|
|
|
|
let error_message = last_error.to_string();
|
|
|
|
|
|
|
|
let buffer = slice::from_raw_parts_mut(buffer as *mut u8, length as usize);
|
|
|
|
|
|
|
|
if error_message.len() >= buffer.len() {
|
|
|
|
// buffer to small for err message
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
ptr::copy_nonoverlapping(
|
|
|
|
error_message.as_ptr(),
|
|
|
|
buffer.as_mut_ptr(),
|
|
|
|
error_message.len(),
|
|
|
|
);
|
|
|
|
|
|
|
|
// Add a trailing null so people using the string as a `char *` don't
|
|
|
|
// accidentally read into garbage.
|
|
|
|
buffer[error_message.len()] = 0;
|
|
|
|
|
|
|
|
error_message.len() as c_int
|
|
|
|
}
|
2019-02-12 02:08:54 +00:00
|
|
|
|
|
|
|
#[derive(Debug)]
|
|
|
|
struct CApiError {
|
|
|
|
msg: String,
|
|
|
|
}
|
|
|
|
|
|
|
|
impl fmt::Display for CApiError {
|
|
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
|
|
write!(f, "{}", &self.msg)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl Error for CApiError {}
|
2019-02-14 02:02:11 +00:00
|
|
|
|
|
|
|
struct NamedExport {
|
|
|
|
name: String,
|
|
|
|
export: Export,
|
|
|
|
}
|