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Merge branch 'master' into fix-llvm-example

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This commit is contained in:
Mackenzie Clark
2019-03-30 18:10:20 -07:00
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parent ddf532ddb5 ae3d1034ef
commit ca41c6dd6b
21 changed files with 2147 additions and 1763 deletions
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31
lib/clif-backend/README.md Normal file
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@ -0,0 +1,31 @@
<p align="center">
<a href="https://wasmer.io" target="_blank" rel="noopener noreferrer">
<img width="400" src="https://raw.githubusercontent.com/wasmerio/wasmer/master/logo.png" alt="Wasmer logo">
</a>
</p>
<p align="center">
<a href="https://circleci.com/gh/wasmerio/wasmer/">
<img src="https://img.shields.io/circleci/project/github/wasmerio/wasmer/master.svg" alt="Build Status">
</a>
<a href="https://github.com/wasmerio/wasmer/blob/master/LICENSE">
<img src="https://img.shields.io/github/license/wasmerio/wasmer.svg" alt="License">
</a>
<a href="https://spectrum.chat/wasmer">
<img src="https://withspectrum.github.io/badge/badge.svg" alt="Join the Wasmer Community">
</a>
<a href="https://crates.io/crates/wasmer-clif-backend">
<img src="https://img.shields.io/crates/d/wasmer-clif-backend.svg" alt="Number of downloads from crates.io">
</a>
<a href="https://docs.rs/wasmer-clif-backend">
<img src="https://docs.rs/wasmer-clif-backend/badge.svg" alt="Read our API documentation">
</a>
</p>
# Wasmer Cranelift backend
Wasmer is a standalone JIT WebAssembly runtime, aiming to be fully
compatible with Emscripten, Rust and Go. [Learn
more](https://github.com/wasmerio/wasmer).
This crate represents the Cranelift backend.

31
lib/dynasm-backend/README.md Normal file
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@ -0,0 +1,31 @@
<p align="center">
<a href="https://wasmer.io" target="_blank" rel="noopener noreferrer">
<img width="400" src="https://raw.githubusercontent.com/wasmerio/wasmer/master/logo.png" alt="Wasmer logo">
</a>
</p>
<p align="center">
<a href="https://circleci.com/gh/wasmerio/wasmer/">
<img src="https://img.shields.io/circleci/project/github/wasmerio/wasmer/master.svg" alt="Build Status">
</a>
<a href="https://github.com/wasmerio/wasmer/blob/master/LICENSE">
<img src="https://img.shields.io/github/license/wasmerio/wasmer.svg" alt="License">
</a>
<a href="https://spectrum.chat/wasmer">
<img src="https://withspectrum.github.io/badge/badge.svg" alt="Join the Wasmer Community">
</a>
<a href="https://crates.io/crates/wasmer-dynasm-backend">
<img src="https://img.shields.io/crates/d/wasmer-dynasm-backend.svg" alt="Number of downloads from crates.io">
</a>
<a href="https://docs.rs/wasmer-dynasm-backend">
<img src="https://docs.rs/wasmer-dynasm-backend/badge.svg" alt="Read our API documentation">
</a>
</p>
# Wasmer dynasm backend
Wasmer is a standalone JIT WebAssembly runtime, aiming to be fully
compatible with Emscripten, Rust and Go. [Learn
more](https://github.com/wasmerio/wasmer).
This crate represents the dynasm backend.

49
lib/emscripten/src/emscripten_target.rs
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@ -118,6 +118,22 @@ pub fn _pthread_cond_destroy(_ctx: &mut Ctx, _a: i32) -> i32 {
debug!("emscripten::_pthread_cond_destroy"); debug!("emscripten::_pthread_cond_destroy");
0 0
} }
pub fn _pthread_getspecific(_ctx: &mut Ctx, _a: i32) -> i32 {
debug!("emscripten::_pthread_getspecific");
0
}
pub fn _pthread_setspecific(_ctx: &mut Ctx, _a: i32, _b: i32) -> i32 {
debug!("emscripten::_pthread_setspecific");
0
}
pub fn _pthread_once(_ctx: &mut Ctx, _a: i32, _b: i32) -> i32 {
debug!("emscripten::_pthread_once");
0
}
pub fn _pthread_key_create(_ctx: &mut Ctx, _a: i32, _b: i32) -> i32 {
debug!("emscripten::_pthread_key_create");
0
}
pub fn _pthread_create(_ctx: &mut Ctx, _a: i32, _b: i32, _c: i32, _d: i32) -> i32 { pub fn _pthread_create(_ctx: &mut Ctx, _a: i32, _b: i32, _c: i32, _d: i32) -> i32 {
debug!("emscripten::_pthread_create"); debug!("emscripten::_pthread_create");
0 0
@ -424,6 +440,30 @@ pub fn invoke_viiiiiiiii(
panic!("dyn_call_viiiiiiiii is set to None"); panic!("dyn_call_viiiiiiiii is set to None");
} }
} }
pub fn invoke_viiiiiiiiii(
ctx: &mut Ctx,
index: i32,
a1: i32,
a2: i32,
a3: i32,
a4: i32,
a5: i32,
a6: i32,
a7: i32,
a8: i32,
a9: i32,
a10: i32,
) {
debug!("emscripten::invoke_viiiiiiiiii");
if let Some(dyn_call_viiiiiiiiii) = &get_emscripten_data(ctx).dyn_call_viiiiiiiiii {
dyn_call_viiiiiiiiii
.call(index, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10)
.unwrap();
} else {
panic!("dyn_call_viiiiiiiiii is set to None");
}
}
pub fn invoke_iiji(ctx: &mut Ctx, index: i32, a1: i32, a2: i32, a3: i32, a4: i32) -> i32 { pub fn invoke_iiji(ctx: &mut Ctx, index: i32, a1: i32, a2: i32, a3: i32, a4: i32) -> i32 {
debug!("emscripten::invoke_iiji"); debug!("emscripten::invoke_iiji");
if let Some(dyn_call_iiji) = &get_emscripten_data(ctx).dyn_call_iiji { if let Some(dyn_call_iiji) = &get_emscripten_data(ctx).dyn_call_iiji {
@ -448,6 +488,15 @@ pub fn invoke_ji(ctx: &mut Ctx, index: i32, a1: i32) -> i32 {
panic!("dyn_call_ji is set to None"); panic!("dyn_call_ji is set to None");
} }
} }
pub fn invoke_jii(ctx: &mut Ctx, index: i32, a1: i32, a2: i32) -> i32 {
debug!("emscripten::invoke_jii");
if let Some(dyn_call_jii) = &get_emscripten_data(ctx).dyn_call_jii {
dyn_call_jii.call(index, a1, a2).unwrap()
} else {
panic!("dyn_call_jii is set to None");
}
}
pub fn invoke_jij(ctx: &mut Ctx, index: i32, a1: i32, a2: i32, a3: i32) -> i32 { pub fn invoke_jij(ctx: &mut Ctx, index: i32, a1: i32, a2: i32, a3: i32) -> i32 {
debug!("emscripten::invoke_jij"); debug!("emscripten::invoke_jij");
if let Some(dyn_call_jij) = &get_emscripten_data(ctx).dyn_call_jij { if let Some(dyn_call_jij) = &get_emscripten_data(ctx).dyn_call_jij {

9
lib/emscripten/src/exception.rs
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@ -14,3 +14,12 @@ pub fn ___cxa_throw(ctx: &mut Ctx, _ptr: u32, _ty: u32, _destructor: u32) {
debug!("emscripten::___cxa_throw"); debug!("emscripten::___cxa_throw");
_abort(ctx); _abort(ctx);
} }
pub fn ___cxa_begin_catch(_ctx: &mut Ctx, _exception_object_ptr: u32) -> i32 {
debug!("emscripten::___cxa_begin_catch");
-1
}
pub fn ___cxa_end_catch(_ctx: &mut Ctx) {
debug!("emscripten::___cxa_end_catch");
}

17
lib/emscripten/src/lib.rs
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@ -104,9 +104,12 @@ pub struct EmscriptenData<'a> {
pub dyn_call_viiiiiii: Option<Func<'a, (i32, i32, i32, i32, i32, i32, i32, i32)>>, pub dyn_call_viiiiiii: Option<Func<'a, (i32, i32, i32, i32, i32, i32, i32, i32)>>,
pub dyn_call_viiiiiiii: Option<Func<'a, (i32, i32, i32, i32, i32, i32, i32, i32, i32)>>, pub dyn_call_viiiiiiii: Option<Func<'a, (i32, i32, i32, i32, i32, i32, i32, i32, i32)>>,
pub dyn_call_viiiiiiiii: Option<Func<'a, (i32, i32, i32, i32, i32, i32, i32, i32, i32, i32)>>, pub dyn_call_viiiiiiiii: Option<Func<'a, (i32, i32, i32, i32, i32, i32, i32, i32, i32, i32)>>,
pub dyn_call_viiiiiiiiii:
Option<Func<'a, (i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32)>>,
pub dyn_call_iiji: Option<Func<'a, (i32, i32, i32, i32, i32), i32>>, pub dyn_call_iiji: Option<Func<'a, (i32, i32, i32, i32, i32), i32>>,
pub dyn_call_j: Option<Func<'a, i32, i32>>, pub dyn_call_j: Option<Func<'a, i32, i32>>,
pub dyn_call_ji: Option<Func<'a, (i32, i32), i32>>, pub dyn_call_ji: Option<Func<'a, (i32, i32), i32>>,
pub dyn_call_jii: Option<Func<'a, (i32, i32, i32), i32>>,
pub dyn_call_jij: Option<Func<'a, (i32, i32, i32, i32), i32>>, pub dyn_call_jij: Option<Func<'a, (i32, i32, i32, i32), i32>>,
pub dyn_call_jjj: Option<Func<'a, (i32, i32, i32, i32, i32), i32>>, pub dyn_call_jjj: Option<Func<'a, (i32, i32, i32, i32, i32), i32>>,
pub dyn_call_viiij: Option<Func<'a, (i32, i32, i32, i32, i32, i32)>>, pub dyn_call_viiij: Option<Func<'a, (i32, i32, i32, i32, i32, i32)>>,
@ -160,9 +163,11 @@ impl<'a> EmscriptenData<'a> {
let dyn_call_viiiiiii = instance.func("dynCall_viiiiiii").ok(); let dyn_call_viiiiiii = instance.func("dynCall_viiiiiii").ok();
let dyn_call_viiiiiiii = instance.func("dynCall_viiiiiiii").ok(); let dyn_call_viiiiiiii = instance.func("dynCall_viiiiiiii").ok();
let dyn_call_viiiiiiiii = instance.func("dynCall_viiiiiiiii").ok(); let dyn_call_viiiiiiiii = instance.func("dynCall_viiiiiiiii").ok();
let dyn_call_viiiiiiiiii = instance.func("dynCall_viiiiiiiiii").ok();
let dyn_call_iiji = instance.func("dynCall_iiji").ok(); let dyn_call_iiji = instance.func("dynCall_iiji").ok();
let dyn_call_j = instance.func("dynCall_j").ok(); let dyn_call_j = instance.func("dynCall_j").ok();
let dyn_call_ji = instance.func("dynCall_ji").ok(); let dyn_call_ji = instance.func("dynCall_ji").ok();
let dyn_call_jii = instance.func("dynCall_jii").ok();
let dyn_call_jij = instance.func("dynCall_jij").ok(); let dyn_call_jij = instance.func("dynCall_jij").ok();
let dyn_call_jjj = instance.func("dynCall_jjj").ok(); let dyn_call_jjj = instance.func("dynCall_jjj").ok();
let dyn_call_viiij = instance.func("dynCall_viiij").ok(); let dyn_call_viiij = instance.func("dynCall_viiij").ok();
@ -209,9 +214,11 @@ impl<'a> EmscriptenData<'a> {
dyn_call_viiiiiii, dyn_call_viiiiiii,
dyn_call_viiiiiiii, dyn_call_viiiiiiii,
dyn_call_viiiiiiiii, dyn_call_viiiiiiiii,
dyn_call_viiiiiiiiii,
dyn_call_iiji, dyn_call_iiji,
dyn_call_j, dyn_call_j,
dyn_call_ji, dyn_call_ji,
dyn_call_jii,
dyn_call_jij, dyn_call_jij,
dyn_call_jjj, dyn_call_jjj,
dyn_call_viiij, dyn_call_viiij,
@ -562,6 +569,7 @@ pub fn generate_emscripten_env(globals: &mut EmscriptenGlobals) -> ImportObject
"_kill" => func!(crate::process::_kill), "_kill" => func!(crate::process::_kill),
"_llvm_stackrestore" => func!(crate::process::_llvm_stackrestore), "_llvm_stackrestore" => func!(crate::process::_llvm_stackrestore),
"_llvm_stacksave" => func!(crate::process::_llvm_stacksave), "_llvm_stacksave" => func!(crate::process::_llvm_stacksave),
"_llvm_eh_typeid_for" => func!(crate::process::_llvm_eh_typeid_for),
"_raise" => func!(crate::process::_raise), "_raise" => func!(crate::process::_raise),
"_sem_init" => func!(crate::process::_sem_init), "_sem_init" => func!(crate::process::_sem_init),
"_sem_post" => func!(crate::process::_sem_post), "_sem_post" => func!(crate::process::_sem_post),
@ -597,6 +605,8 @@ pub fn generate_emscripten_env(globals: &mut EmscriptenGlobals) -> ImportObject
// Exception // Exception
"___cxa_allocate_exception" => func!(crate::exception::___cxa_allocate_exception), "___cxa_allocate_exception" => func!(crate::exception::___cxa_allocate_exception),
"___cxa_throw" => func!(crate::exception::___cxa_throw), "___cxa_throw" => func!(crate::exception::___cxa_throw),
"___cxa_begin_catch" => func!(crate::exception::___cxa_begin_catch),
"___cxa_end_catch" => func!(crate::exception::___cxa_end_catch),
// Time // Time
"_gettimeofday" => func!(crate::time::_gettimeofday), "_gettimeofday" => func!(crate::time::_gettimeofday),
@ -675,6 +685,10 @@ pub fn generate_emscripten_env(globals: &mut EmscriptenGlobals) -> ImportObject
"_pthread_rwlock_rdlock" => func!(crate::emscripten_target::_pthread_rwlock_rdlock), "_pthread_rwlock_rdlock" => func!(crate::emscripten_target::_pthread_rwlock_rdlock),
"_pthread_rwlock_unlock" => func!(crate::emscripten_target::_pthread_rwlock_unlock), "_pthread_rwlock_unlock" => func!(crate::emscripten_target::_pthread_rwlock_unlock),
"_pthread_setcancelstate" => func!(crate::emscripten_target::_pthread_setcancelstate), "_pthread_setcancelstate" => func!(crate::emscripten_target::_pthread_setcancelstate),
"_pthread_getspecific" => func!(crate::emscripten_target::_pthread_getspecific),
"_pthread_setspecific" => func!(crate::emscripten_target::_pthread_setspecific),
"_pthread_once" => func!(crate::emscripten_target::_pthread_once),
"_pthread_key_create" => func!(crate::emscripten_target::_pthread_key_create),
"___gxx_personality_v0" => func!(crate::emscripten_target::___gxx_personality_v0), "___gxx_personality_v0" => func!(crate::emscripten_target::___gxx_personality_v0),
"_getdtablesize" => func!(crate::emscripten_target::_getdtablesize), "_getdtablesize" => func!(crate::emscripten_target::_getdtablesize),
"_gethostbyaddr" => func!(crate::emscripten_target::_gethostbyaddr), "_gethostbyaddr" => func!(crate::emscripten_target::_gethostbyaddr),
@ -693,9 +707,12 @@ pub fn generate_emscripten_env(globals: &mut EmscriptenGlobals) -> ImportObject
"invoke_viiiiiii" => func!(crate::emscripten_target::invoke_viiiiiii), "invoke_viiiiiii" => func!(crate::emscripten_target::invoke_viiiiiii),
"invoke_viiiiiiii" => func!(crate::emscripten_target::invoke_viiiiiiii), "invoke_viiiiiiii" => func!(crate::emscripten_target::invoke_viiiiiiii),
"invoke_viiiiiiiii" => func!(crate::emscripten_target::invoke_viiiiiiiii), "invoke_viiiiiiiii" => func!(crate::emscripten_target::invoke_viiiiiiiii),
"invoke_viiiiiiiii" => func!(crate::emscripten_target::invoke_viiiiiiiii),
"invoke_viiiiiiiiii" => func!(crate::emscripten_target::invoke_viiiiiiiiii),
"invoke_iiji" => func!(crate::emscripten_target::invoke_iiji), "invoke_iiji" => func!(crate::emscripten_target::invoke_iiji),
"invoke_j" => func!(crate::emscripten_target::invoke_j), "invoke_j" => func!(crate::emscripten_target::invoke_j),
"invoke_ji" => func!(crate::emscripten_target::invoke_ji), "invoke_ji" => func!(crate::emscripten_target::invoke_ji),
"invoke_jii" => func!(crate::emscripten_target::invoke_jii),
"invoke_jij" => func!(crate::emscripten_target::invoke_jij), "invoke_jij" => func!(crate::emscripten_target::invoke_jij),
"invoke_jjj" => func!(crate::emscripten_target::invoke_jjj), "invoke_jjj" => func!(crate::emscripten_target::invoke_jjj),
"invoke_viiij" => func!(crate::emscripten_target::invoke_viiij), "invoke_viiij" => func!(crate::emscripten_target::invoke_viiij),

5
lib/emscripten/src/process.rs
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@ -150,6 +150,11 @@ pub fn _llvm_trap(ctx: &mut Ctx) {
abort_with_message(ctx, "abort!"); abort_with_message(ctx, "abort!");
} }
pub fn _llvm_eh_typeid_for(_ctx: &mut Ctx, _type_info_addr: u32) -> i32 {
debug!("emscripten::_llvm_eh_typeid_for");
-1
}
pub fn _system(_ctx: &mut Ctx, _one: i32) -> c_int { pub fn _system(_ctx: &mut Ctx, _one: i32) -> c_int {
debug!("emscripten::_system"); debug!("emscripten::_system");
// TODO: May need to change this Em impl to a working version // TODO: May need to change this Em impl to a working version

31
lib/llvm-backend/README.md Normal file
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@ -0,0 +1,31 @@
<p align="center">
<a href="https://wasmer.io" target="_blank" rel="noopener noreferrer">
<img width="400" src="https://raw.githubusercontent.com/wasmerio/wasmer/master/logo.png" alt="Wasmer logo">
</a>
</p>
<p align="center">
<a href="https://circleci.com/gh/wasmerio/wasmer/">
<img src="https://img.shields.io/circleci/project/github/wasmerio/wasmer/master.svg" alt="Build Status">
</a>
<a href="https://github.com/wasmerio/wasmer/blob/master/LICENSE">
<img src="https://img.shields.io/github/license/wasmerio/wasmer.svg" alt="License">
</a>
<a href="https://spectrum.chat/wasmer">
<img src="https://withspectrum.github.io/badge/badge.svg" alt="Join the Wasmer Community">
</a>
<a href="https://crates.io/crates/wasmer-llvm-backend">
<img src="https://img.shields.io/crates/d/wasmer-llvm-backend.svg" alt="Number of downloads from crates.io">
</a>
<a href="https://docs.rs/wasmer-llvm-backend">
<img src="https://docs.rs/wasmer-llvm-backend/badge.svg" alt="Read our API documentation">
</a>
</p>
# Wasmer LLVM backend
Wasmer is a standalone JIT WebAssembly runtime, aiming to be fully
compatible with Emscripten, Rust and Go. [Learn
more](https://github.com/wasmerio/wasmer).
This crate represents the LLVM backend.

102
lib/runtime-c-api/src/error.rs Normal file
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@ -0,0 +1,102 @@
//! Errors.
use libc::{c_char, c_int};
use std::cell::RefCell;
use std::error::Error;
use std::fmt::{self, Display, Formatter};
use std::ptr;
use std::slice;
thread_local! {
static LAST_ERROR: RefCell<Option<Box<Error>>> = RefCell::new(None);
}
pub(crate) 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.
pub(crate) fn take_last_error() -> Option<Box<Error>> {
LAST_ERROR.with(|prev| prev.borrow_mut().take())
}
/// 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);
/// ```
#[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,
})
}
/// 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);
/// ```
#[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
}
#[derive(Debug)]
pub(crate) struct CApiError {
pub(crate) msg: String,
}
impl Display for CApiError {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(f, "{}", &self.msg)
}
}
impl Error for CApiError {}

440
lib/runtime-c-api/src/export.rs Normal file
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@ -0,0 +1,440 @@
//! Wasm exports.
use crate::{
error::{update_last_error, CApiError},
global::wasmer_global_t,
import::wasmer_import_func_t,
memory::wasmer_memory_t,
module::wasmer_module_t,
table::wasmer_table_t,
value::{wasmer_value, wasmer_value_t, wasmer_value_tag},
wasmer_byte_array, wasmer_result_t,
};
use libc::{c_int, uint32_t};
use std::{ptr, slice};
use wasmer_runtime::{Instance, Memory, Module, Value};
use wasmer_runtime_core::{export::Export, module::ExportIndex};
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_export_t;
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_exports_t;
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_export_func_t;
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_export_descriptor_t;
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_export_descriptors_t;
#[repr(C)]
#[derive(Clone, Copy)]
pub union wasmer_import_export_value {
pub func: *const wasmer_import_func_t,
pub table: *const wasmer_table_t,
pub memory: *const wasmer_memory_t,
pub global: *const wasmer_global_t,
}
#[allow(non_camel_case_types)]
#[repr(u32)]
#[derive(Clone)]
pub enum wasmer_import_export_kind {
WASM_FUNCTION,
WASM_GLOBAL,
WASM_MEMORY,
WASM_TABLE,
}
/// Gets export descriptors for the given module
///
/// The caller owns the object and should call `wasmer_export_descriptors_destroy` to free it.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_export_descriptors(
module: *const wasmer_module_t,
export_descriptors: *mut *mut wasmer_export_descriptors_t,
) {
let module = &*(module as *const Module);
let named_export_descriptors: Box<NamedExportDescriptors> = Box::new(NamedExportDescriptors(
module.info().exports.iter().map(|e| e.into()).collect(),
));
*export_descriptors =
Box::into_raw(named_export_descriptors) as *mut wasmer_export_descriptors_t;
}
pub struct NamedExportDescriptors(Vec<NamedExportDescriptor>);
/// Frees the memory for the given export descriptors
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_export_descriptors_destroy(
export_descriptors: *mut wasmer_export_descriptors_t,
) {
if !export_descriptors.is_null() {
unsafe { Box::from_raw(export_descriptors as *mut NamedExportDescriptors) };
}
}
/// Gets the length of the export descriptors
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_export_descriptors_len(
exports: *mut wasmer_export_descriptors_t,
) -> c_int {
if exports.is_null() {
return 0;
}
(*(exports as *mut NamedExportDescriptors)).0.len() as c_int
}
/// Gets export descriptor by index
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_export_descriptors_get(
export_descriptors: *mut wasmer_export_descriptors_t,
idx: c_int,
) -> *mut wasmer_export_descriptor_t {
if export_descriptors.is_null() {
return ptr::null_mut();
}
let named_export_descriptors = &mut *(export_descriptors as *mut NamedExportDescriptors);
&mut (*named_export_descriptors).0[idx as usize] as *mut NamedExportDescriptor
as *mut wasmer_export_descriptor_t
}
/// Gets name for the export descriptor
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_export_descriptor_name(
export_descriptor: *mut wasmer_export_descriptor_t,
) -> wasmer_byte_array {
let named_export_descriptor = &*(export_descriptor as *mut NamedExportDescriptor);
wasmer_byte_array {
bytes: named_export_descriptor.name.as_ptr(),
bytes_len: named_export_descriptor.name.len() as u32,
}
}
/// Gets export descriptor kind
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_export_descriptor_kind(
export: *mut wasmer_export_descriptor_t,
) -> wasmer_import_export_kind {
let named_export_descriptor = &*(export as *mut NamedExportDescriptor);
named_export_descriptor.kind.clone()
}
pub(crate) struct NamedExports(pub Vec<NamedExport>);
/// Frees the memory for the given exports
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_exports_destroy(exports: *mut wasmer_exports_t) {
if !exports.is_null() {
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 named_exports = &mut *(exports as *mut NamedExports);
&mut (*named_exports).0[idx as usize] as *mut NamedExport as *mut wasmer_export_t
}
/// 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,
}
}
/// 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.
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_export_func_params_arity(
func: *const wasmer_export_func_t,
result: *mut uint32_t,
) -> wasmer_result_t {
let named_export = &*(func as *const NamedExport);
let export = &named_export.export;
if let Export::Function { ref signature, .. } = *export {
*result = signature.params().len() as uint32_t;
wasmer_result_t::WASMER_OK
} else {
update_last_error(CApiError {
msg: "func ptr error in wasmer_export_func_params_arity".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
/// 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.
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_export_func_params(
func: *const wasmer_export_func_t,
params: *mut wasmer_value_tag,
params_len: c_int,
) -> wasmer_result_t {
let named_export = &*(func as *const NamedExport);
let export = &named_export.export;
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_export_func_params".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
/// 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.
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_export_func_returns(
func: *const wasmer_export_func_t,
returns: *mut wasmer_value_tag,
returns_len: c_int,
) -> wasmer_result_t {
let named_export = &*(func as *const NamedExport);
let export = &named_export.export;
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_export_func_returns".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
/// 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.
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_export_func_returns_arity(
func: *const wasmer_export_func_t,
result: *mut uint32_t,
) -> wasmer_result_t {
let named_export = &*(func as *const NamedExport);
let export = &named_export.export;
if let Export::Function { ref signature, .. } = *export {
*result = signature.returns().len() as uint32_t;
wasmer_result_t::WASMER_OK
} else {
update_last_error(CApiError {
msg: "func ptr error in wasmer_export_func_results_arity".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
/// Gets export func from export
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_export_to_func(
export: *const wasmer_export_t,
) -> *const wasmer_export_func_t {
export as *const wasmer_export_func_t
}
/// 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.
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_export_to_memory(
export: *const wasmer_export_t,
memory: *mut *mut wasmer_memory_t,
) -> wasmer_result_t {
let named_export = &*(export as *const NamedExport);
let export = &named_export.export;
if let Export::Memory(exported_memory) = export {
*memory = exported_memory as *const Memory as *mut wasmer_memory_t;
wasmer_result_t::WASMER_OK
} else {
update_last_error(CApiError {
msg: "cannot cast the `wasmer_export_t` pointer to a `wasmer_memory_t` \
pointer because it does not represent a memory export."
.to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
/// 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_export_func_call(
func: *const wasmer_export_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 named_export = &*(func as *mut NamedExport);
let results: &mut [wasmer_value_t] = slice::from_raw_parts_mut(results, results_len as usize);
let instance = &*named_export.instance;
let result = instance.call(&named_export.name, &params[..]);
match result {
Ok(results_vec) => {
if !results_vec.is_empty() {
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
}
}
}
impl From<(&std::string::String, &ExportIndex)> for NamedExportDescriptor {
fn from((name, export_index): (&String, &ExportIndex)) -> Self {
let kind = match *export_index {
ExportIndex::Memory(_) => wasmer_import_export_kind::WASM_MEMORY,
ExportIndex::Global(_) => wasmer_import_export_kind::WASM_GLOBAL,
ExportIndex::Table(_) => wasmer_import_export_kind::WASM_TABLE,
ExportIndex::Func(_) => wasmer_import_export_kind::WASM_FUNCTION,
};
NamedExportDescriptor {
name: name.clone(),
kind,
}
}
}
pub(crate) struct NamedExport {
pub(crate) name: String,
pub(crate) export: Export,
pub(crate) instance: *mut Instance,
}
pub(crate) struct NamedExportDescriptor {
name: String,
kind: wasmer_import_export_kind,
}

70
lib/runtime-c-api/src/global.rs Normal file
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//! Wasm global.
use crate::value::{wasmer_value_t, wasmer_value_tag};
use wasmer_runtime::Global;
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_global_descriptor_t {
mutable: bool,
kind: wasmer_value_tag,
}
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_global_t;
/// Creates a new Global and returns a pointer to it.
/// The caller owns the object and should call `wasmer_global_destroy` to free it.
#[no_mangle]
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())
};
Box::into_raw(Box::new(global)) as *mut wasmer_global_t
}
/// Gets the value stored by the given Global
#[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 { &*(global as *mut Global) };
let value: wasmer_value_t = global.get().into();
value
}
/// Sets the value stored by the given Global
#[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 { &*(global as *mut Global) };
global.set(value.into());
}
/// Returns a descriptor (type, mutability) of the given Global
#[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 { &*(global as *mut Global) };
let descriptor = global.descriptor();
wasmer_global_descriptor_t {
mutable: descriptor.mutable,
kind: descriptor.ty.into(),
}
}
/// Frees memory for the given Global
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_global_destroy(global: *mut wasmer_global_t) {
if !global.is_null() {
unsafe { Box::from_raw(global as *mut Global) };
}
}

358
lib/runtime-c-api/src/import.rs Normal file
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//! Wasm imports.
use crate::{
error::{update_last_error, CApiError},
export::{wasmer_import_export_kind, wasmer_import_export_value},
module::wasmer_module_t,
value::wasmer_value_tag,
wasmer_byte_array, wasmer_result_t,
};
use libc::{c_int, uint32_t};
use std::{ffi::c_void, ptr, slice, sync::Arc};
use wasmer_runtime::Module;
use wasmer_runtime_core::{
export::{Context, Export, FuncPointer},
module::ImportName,
types::{FuncSig, Type},
};
#[repr(C)]
pub struct wasmer_import_t {
pub module_name: wasmer_byte_array,
pub import_name: wasmer_byte_array,
pub tag: wasmer_import_export_kind,
pub value: wasmer_import_export_value,
}
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_import_func_t;
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_import_descriptor_t;
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_import_descriptors_t;
/// Gets import descriptors for the given module
///
/// The caller owns the object and should call `wasmer_import_descriptors_destroy` to free it.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_import_descriptors(
module: *const wasmer_module_t,
import_descriptors: *mut *mut wasmer_import_descriptors_t,
) {
let module = &*(module as *const Module);
let total_imports = module.info().imported_functions.len()
+ module.info().imported_tables.len()
+ module.info().imported_globals.len()
+ module.info().imported_memories.len();
let mut descriptors: Vec<NamedImportDescriptor> = Vec::with_capacity(total_imports);
for (
_index,
ImportName {
namespace_index,
name_index,
},
) in &module.info().imported_functions
{
let namespace = module.info().namespace_table.get(*namespace_index);
let name = module.info().name_table.get(*name_index);
descriptors.push(NamedImportDescriptor {
module: namespace.to_string(),
name: name.to_string(),
kind: wasmer_import_export_kind::WASM_FUNCTION,
});
}
for (
_index,
(
ImportName {
namespace_index,
name_index,
},
_,
),
) in &module.info().imported_tables
{
let namespace = module.info().namespace_table.get(*namespace_index);
let name = module.info().name_table.get(*name_index);
descriptors.push(NamedImportDescriptor {
module: namespace.to_string(),
name: name.to_string(),
kind: wasmer_import_export_kind::WASM_TABLE,
});
}
for (
_index,
(
ImportName {
namespace_index,
name_index,
},
_,
),
) in &module.info().imported_globals
{
let namespace = module.info().namespace_table.get(*namespace_index);
let name = module.info().name_table.get(*name_index);
descriptors.push(NamedImportDescriptor {
module: namespace.to_string(),
name: name.to_string(),
kind: wasmer_import_export_kind::WASM_GLOBAL,
});
}
for (
_index,
(
ImportName {
namespace_index,
name_index,
},
_,
),
) in &module.info().imported_memories
{
let namespace = module.info().namespace_table.get(*namespace_index);
let name = module.info().name_table.get(*name_index);
descriptors.push(NamedImportDescriptor {
module: namespace.to_string(),
name: name.to_string(),
kind: wasmer_import_export_kind::WASM_MEMORY,
});
}
let named_import_descriptors: Box<NamedImportDescriptors> =
Box::new(NamedImportDescriptors(descriptors));
*import_descriptors =
Box::into_raw(named_import_descriptors) as *mut wasmer_import_descriptors_t;
}
pub struct NamedImportDescriptors(Vec<NamedImportDescriptor>);
/// Frees the memory for the given import descriptors
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_import_descriptors_destroy(
import_descriptors: *mut wasmer_import_descriptors_t,
) {
if !import_descriptors.is_null() {
unsafe { Box::from_raw(import_descriptors as *mut NamedImportDescriptors) };
}
}
/// Gets the length of the import descriptors
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_import_descriptors_len(
exports: *mut wasmer_import_descriptors_t,
) -> c_int {
if exports.is_null() {
return 0;
}
(*(exports as *mut NamedImportDescriptors)).0.len() as c_int
}
/// Gets import descriptor by index
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_import_descriptors_get(
import_descriptors: *mut wasmer_import_descriptors_t,
idx: c_int,
) -> *mut wasmer_import_descriptor_t {
if import_descriptors.is_null() {
return ptr::null_mut();
}
let named_import_descriptors = &mut *(import_descriptors as *mut NamedImportDescriptors);
&mut (*named_import_descriptors).0[idx as usize] as *mut NamedImportDescriptor
as *mut wasmer_import_descriptor_t
}
/// Gets name for the import descriptor
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_import_descriptor_name(
import_descriptor: *mut wasmer_import_descriptor_t,
) -> wasmer_byte_array {
let named_import_descriptor = &*(import_descriptor as *mut NamedImportDescriptor);
wasmer_byte_array {
bytes: named_import_descriptor.name.as_ptr(),
bytes_len: named_import_descriptor.name.len() as u32,
}
}
/// Gets module name for the import descriptor
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_import_descriptor_module_name(
import_descriptor: *mut wasmer_import_descriptor_t,
) -> wasmer_byte_array {
let named_import_descriptor = &*(import_descriptor as *mut NamedImportDescriptor);
wasmer_byte_array {
bytes: named_import_descriptor.module.as_ptr(),
bytes_len: named_import_descriptor.module.len() as u32,
}
}
/// Gets export descriptor kind
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_import_descriptor_kind(
export: *mut wasmer_import_descriptor_t,
) -> wasmer_import_export_kind {
let named_import_descriptor = &*(export as *mut NamedImportDescriptor);
named_import_descriptor.kind.clone()
}
/// 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.
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_import_func_params_arity(
func: *const wasmer_import_func_t,
result: *mut uint32_t,
) -> wasmer_result_t {
let export = &*(func as *const Export);
if let Export::Function { ref signature, .. } = *export {
*result = signature.params().len() as uint32_t;
wasmer_result_t::WASMER_OK
} else {
update_last_error(CApiError {
msg: "func ptr error in wasmer_import_func_params_arity".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
/// Creates new func
///
/// The caller owns the object and should call `wasmer_import_func_destroy` to free it.
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_import_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,
) -> *mut wasmer_import_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: FuncPointer::new(func as _),
ctx: Context::Internal,
signature: Arc::new(FuncSig::new(params, returns)),
});
Box::into_raw(export) as *mut wasmer_import_func_t
}
/// 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.
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_import_func_params(
func: *const wasmer_import_func_t,
params: *mut wasmer_value_tag,
params_len: c_int,
) -> wasmer_result_t {
let export = &*(func as *const Export);
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_import_func_params".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
/// 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.
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_import_func_returns(
func: *const wasmer_import_func_t,
returns: *mut wasmer_value_tag,
returns_len: c_int,
) -> wasmer_result_t {
let export = &*(func as *const Export);
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_import_func_returns".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
/// 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.
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_import_func_returns_arity(
func: *const wasmer_import_func_t,
result: *mut uint32_t,
) -> wasmer_result_t {
let export = &*(func as *const Export);
if let Export::Function { ref signature, .. } = *export {
*result = signature.returns().len() as uint32_t;
wasmer_result_t::WASMER_OK
} else {
update_last_error(CApiError {
msg: "func ptr error in wasmer_import_func_results_arity".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
/// Frees memory for the given Func
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_import_func_destroy(func: *mut wasmer_import_func_t) {
if !func.is_null() {
unsafe { Box::from_raw(func as *mut Export) };
}
}
struct NamedImportDescriptor {
module: String,
name: String,
kind: wasmer_import_export_kind,
}

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//! Wasm instance.
use crate::{
error::{update_last_error, CApiError},
export::{wasmer_exports_t, wasmer_import_export_kind, NamedExport, NamedExports},
import::wasmer_import_t,
memory::wasmer_memory_t,
value::{wasmer_value, wasmer_value_t, wasmer_value_tag},
wasmer_result_t,
};
use libc::{c_char, c_int, c_void, uint32_t, uint8_t};
use std::{collections::HashMap, ffi::CStr, slice};
use wasmer_runtime::{Ctx, Global, ImportObject, Instance, Memory, Table, Value};
use wasmer_runtime_core::{export::Export, import::Namespace};
#[repr(C)]
pub struct wasmer_instance_t;
#[repr(C)]
pub struct wasmer_instance_context_t;
/// 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.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_instantiate(
instance: *mut *mut wasmer_instance_t,
wasm_bytes: *mut uint8_t,
wasm_bytes_len: uint32_t,
imports: *mut wasmer_import_t,
imports_len: c_int,
) -> wasmer_result_t {
if wasm_bytes.is_null() {
update_last_error(CApiError {
msg: "wasm bytes ptr is null".to_string(),
});
return wasmer_result_t::WASMER_ERROR;
}
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 => {
let mem = import.value.memory as *mut Memory;
Export::Memory((&*mem).clone())
}
wasmer_import_export_kind::WASM_FUNCTION => {
let func_export = import.value.func as *mut Export;
(&*func_export).clone()
}
wasmer_import_export_kind::WASM_GLOBAL => {
let global = import.value.global as *mut Global;
Export::Global((&*global).clone())
}
wasmer_import_export_kind::WASM_TABLE => {
let table = import.value.table as *mut Table;
Export::Table((&*table).clone())
}
};
namespace.insert(import_name, export);
}
for (module_name, namespace) in namespaces.into_iter() {
import_object.register(module_name, namespace);
}
let bytes: &[u8] = slice::from_raw_parts_mut(wasm_bytes, wasm_bytes_len as usize);
let result = wasmer_runtime::instantiate(bytes, &import_object);
let new_instance = match result {
Ok(instance) => instance,
Err(_error) => {
// 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(),
});
return wasmer_result_t::WASMER_ERROR;
}
};
*instance = Box::into_raw(Box::new(new_instance)) as *mut wasmer_instance_t;
wasmer_result_t::WASMER_OK
}
/// 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.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_instance_call(
instance: *mut wasmer_instance_t,
name: *const c_char,
params: *const wasmer_value_t,
params_len: c_int,
results: *mut wasmer_value_t,
results_len: c_int,
) -> wasmer_result_t {
if instance.is_null() {
update_last_error(CApiError {
msg: "instance ptr is null".to_string(),
});
return wasmer_result_t::WASMER_ERROR;
}
if name.is_null() {
update_last_error(CApiError {
msg: "name 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 func_name_c = CStr::from_ptr(name);
let func_name_r = func_name_c.to_str().unwrap();
let results: &mut [wasmer_value_t] = slice::from_raw_parts_mut(results, results_len as usize);
let result = (&*(instance as *mut Instance)).call(func_name_r, &params[..]);
match result {
Ok(results_vec) => {
if !results_vec.is_empty() {
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
}
}
}
/// 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 instance_ref = &mut *(instance as *mut Instance);
let mut exports_vec: Vec<NamedExport> = Vec::with_capacity(instance_ref.exports().count());
for (name, export) in instance_ref.exports() {
exports_vec.push(NamedExport {
name: name.clone(),
export: export.clone(),
instance: instance as *mut Instance,
});
}
let named_exports: Box<NamedExports> = Box::new(NamedExports(exports_vec));
*exports = Box::into_raw(named_exports) as *mut wasmer_exports_t;
}
/// Sets the `data` field of the instance context. This context will be
/// passed to all imported function for instance.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_instance_context_data_set(
instance: *mut wasmer_instance_t,
data_ptr: *mut c_void,
) {
let instance_ref = unsafe { &mut *(instance as *mut Instance) };
instance_ref.context_mut().data = data_ptr;
}
/// Gets the memory within the context at the index `memory_idx`.
/// The index is always 0 until multiple memories are supported.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_instance_context_memory(
ctx: *const wasmer_instance_context_t,
_memory_idx: uint32_t,
) -> *const wasmer_memory_t {
let ctx = unsafe { &*(ctx as *const Ctx) };
let memory = ctx.memory(0);
memory as *const Memory as *const wasmer_memory_t
}
/// Gets the `data` field within the context.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_instance_context_data_get(
ctx: *const wasmer_instance_context_t,
) -> *mut c_void {
let ctx = unsafe { &*(ctx as *const Ctx) };
ctx.data
}
/// Frees memory for the given Instance
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_instance_destroy(instance: *mut wasmer_instance_t) {
if !instance.is_null() {
unsafe { Box::from_raw(instance as *mut Instance) };
}
}

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108
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//! Wasm memory.o
use crate::{error::update_last_error, wasmer_limits_t, wasmer_result_t};
use libc::{uint32_t, uint8_t};
use std::cell::Cell;
use wasmer_runtime::Memory;
use wasmer_runtime_core::{
types::MemoryDescriptor,
units::{Bytes, Pages},
};
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_memory_t;
/// 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.
#[no_mangle]
pub unsafe extern "C" fn wasmer_memory_new(
memory: *mut *mut wasmer_memory_t,
limits: wasmer_limits_t,
) -> wasmer_result_t {
let max = if limits.max.has_some {
Some(Pages(limits.max.some))
} else {
None
};
let desc = MemoryDescriptor {
minimum: Pages(limits.min),
maximum: max,
shared: false,
};
let result = Memory::new(desc);
let new_memory = match result {
Ok(memory) => memory,
Err(error) => {
update_last_error(error);
return wasmer_result_t::WASMER_ERROR;
}
};
*memory = Box::into_raw(Box::new(new_memory)) as *mut wasmer_memory_t;
wasmer_result_t::WASMER_OK
}
/// 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.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_memory_grow(
memory: *mut wasmer_memory_t,
delta: uint32_t,
) -> wasmer_result_t {
let memory = unsafe { &*(memory as *mut Memory) };
let delta_result = memory.grow(Pages(delta));
match delta_result {
Ok(_) => wasmer_result_t::WASMER_OK,
Err(grow_error) => {
update_last_error(grow_error);
wasmer_result_t::WASMER_ERROR
}
}
}
/// Returns the current length in pages of the given memory
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_memory_length(memory: *const wasmer_memory_t) -> uint32_t {
let memory = unsafe { &*(memory as *const Memory) };
let Pages(len) = memory.size();
len
}
/// Gets the start pointer to the bytes within a Memory
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_memory_data(mem: *const wasmer_memory_t) -> *mut uint8_t {
let memory = unsafe { &*(mem as *const Memory) };
memory.view::<u8>()[..].as_ptr() as *mut Cell<u8> as *mut u8
}
/// Gets the size in bytes of a Memory
#[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
}
/// Frees memory for the given Memory
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_memory_destroy(memory: *mut wasmer_memory_t) {
if !memory.is_null() {
unsafe { Box::from_raw(memory as *mut Memory) };
}
}

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//! Wasm module.
use crate::{
error::{update_last_error, CApiError},
export::wasmer_import_export_kind,
import::wasmer_import_t,
instance::wasmer_instance_t,
wasmer_byte_array, wasmer_result_t,
};
use libc::{c_int, uint32_t, uint8_t};
use std::{collections::HashMap, slice};
use wasmer_runtime::{compile, default_compiler, Global, ImportObject, Memory, Module, Table};
use wasmer_runtime_core::{cache::Artifact, export::Export, import::Namespace, load_cache_with};
#[repr(C)]
pub struct wasmer_module_t;
#[repr(C)]
pub struct wasmer_serialized_module_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.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_compile(
module: *mut *mut wasmer_module_t,
wasm_bytes: *mut uint8_t,
wasm_bytes_len: uint32_t,
) -> wasmer_result_t {
let bytes: &[u8] = slice::from_raw_parts_mut(wasm_bytes, wasm_bytes_len as usize);
let result = compile(bytes);
let new_module = match result {
Ok(instance) => instance,
Err(error) => {
update_last_error(error);
return wasmer_result_t::WASMER_ERROR;
}
};
*module = Box::into_raw(Box::new(new_module)) as *mut wasmer_module_t;
wasmer_result_t::WASMER_OK
}
/// Returns true for valid wasm bytes and false for invalid bytes
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_validate(
wasm_bytes: *const uint8_t,
wasm_bytes_len: uint32_t,
) -> bool {
if wasm_bytes.is_null() {
return false;
}
let bytes: &[u8] = slice::from_raw_parts(wasm_bytes, wasm_bytes_len as usize);
wasmer_runtime_core::validate(bytes)
}
/// 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.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_module_instantiate(
module: *const wasmer_module_t,
instance: *mut *mut wasmer_instance_t,
imports: *mut wasmer_import_t,
imports_len: c_int,
) -> wasmer_result_t {
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 => {
let mem = import.value.memory as *mut Memory;
Export::Memory((&*mem).clone())
}
wasmer_import_export_kind::WASM_FUNCTION => {
let func_export = import.value.func as *mut Export;
(&*func_export).clone()
}
wasmer_import_export_kind::WASM_GLOBAL => {
let global = import.value.global as *mut Global;
Export::Global((&*global).clone())
}
wasmer_import_export_kind::WASM_TABLE => {
let table = import.value.table as *mut Table;
Export::Table((&*table).clone())
}
};
namespace.insert(import_name, export);
}
for (module_name, namespace) in namespaces.into_iter() {
import_object.register(module_name, namespace);
}
let module = &*(module as *const Module);
let new_instance = if let Ok(res) = module.instantiate(&import_object) {
res
} else {
update_last_error(CApiError {
msg: "error instantiating from module".to_string(),
});
return wasmer_result_t::WASMER_ERROR;
};
*instance = Box::into_raw(Box::new(new_instance)) as *mut wasmer_instance_t;
wasmer_result_t::WASMER_OK
}
/// 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.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_module_serialize(
serialized_module: *mut *mut wasmer_serialized_module_t,
module: *const wasmer_module_t,
) -> wasmer_result_t {
let module = &*(module as *const Module);
match module.cache() {
Ok(artifact) => match artifact.serialize() {
Ok(serialized_artifact) => {
*serialized_module = Box::into_raw(Box::new(serialized_artifact)) as _;
wasmer_result_t::WASMER_OK
}
Err(_) => {
update_last_error(CApiError {
msg: "Failed to serialize the module artifact".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
},
Err(_) => {
update_last_error(CApiError {
msg: "Failed to serialize the module".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
}
/// Get bytes of the serialized module.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_serialized_module_bytes(
serialized_module: *const wasmer_serialized_module_t,
) -> wasmer_byte_array {
let serialized_module = &*(serialized_module as *const &[u8]);
wasmer_byte_array {
bytes: serialized_module.as_ptr(),
bytes_len: serialized_module.len() as u32,
}
}
/// 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.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_serialized_module_from_bytes(
serialized_module: *mut *mut wasmer_serialized_module_t,
serialized_module_bytes: *const uint8_t,
serialized_module_bytes_length: uint32_t,
) -> wasmer_result_t {
if serialized_module.is_null() {
update_last_error(CApiError {
msg: "`serialized_module_bytes` pointer is null".to_string(),
});
return wasmer_result_t::WASMER_ERROR;
}
let serialized_module_bytes: &[u8] = slice::from_raw_parts(
serialized_module_bytes,
serialized_module_bytes_length as usize,
);
*serialized_module = Box::into_raw(Box::new(serialized_module_bytes)) as _;
wasmer_result_t::WASMER_OK
}
/// 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.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub unsafe extern "C" fn wasmer_module_deserialize(
module: *mut *mut wasmer_module_t,
serialized_module: *const wasmer_serialized_module_t,
) -> wasmer_result_t {
if serialized_module.is_null() {
update_last_error(CApiError {
msg: "`serialized_module` pointer is null".to_string(),
});
return wasmer_result_t::WASMER_ERROR;
}
let serialized_module: &[u8] = &*(serialized_module as *const &[u8]);
match Artifact::deserialize(serialized_module) {
Ok(artifact) => match load_cache_with(artifact, default_compiler()) {
Ok(deserialized_module) => {
*module = Box::into_raw(Box::new(deserialized_module)) as _;
wasmer_result_t::WASMER_OK
}
Err(_) => {
update_last_error(CApiError {
msg: "Failed to compile the serialized module".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
},
Err(_) => {
update_last_error(CApiError {
msg: "Failed to deserialize the module".to_string(),
});
wasmer_result_t::WASMER_ERROR
}
}
}
/// Frees memory for the given serialized Module.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_serialized_module_destroy(
serialized_module: *mut wasmer_serialized_module_t,
) {
if !serialized_module.is_null() {
unsafe { Box::from_raw(serialized_module as *mut &[u8]) };
}
}
/// 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() {
unsafe { Box::from_raw(module as *mut Module) };
}
}

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@ -0,0 +1,86 @@
//! Wasm tables.
use crate::{error::update_last_error, wasmer_limits_t, wasmer_result_t};
use libc::uint32_t;
use wasmer_runtime::Table;
use wasmer_runtime_core::types::{ElementType, TableDescriptor};
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_table_t;
/// 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.
#[no_mangle]
pub unsafe extern "C" fn wasmer_table_new(
table: *mut *mut wasmer_table_t,
limits: wasmer_limits_t,
) -> wasmer_result_t {
let max = if limits.max.has_some {
Some(limits.max.some)
} else {
None
};
let desc = TableDescriptor {
element: ElementType::Anyfunc,
minimum: limits.min,
maximum: max,
};
let result = Table::new(desc);
let new_table = match result {
Ok(table) => table,
Err(error) => {
update_last_error(error);
return wasmer_result_t::WASMER_ERROR;
}
};
*table = Box::into_raw(Box::new(new_table)) as *mut wasmer_table_t;
wasmer_result_t::WASMER_OK
}
/// 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.
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_table_grow(
table: *mut wasmer_table_t,
delta: uint32_t,
) -> wasmer_result_t {
let table = unsafe { &*(table as *mut Table) };
let delta_result = table.grow(delta);
match delta_result {
Ok(_) => wasmer_result_t::WASMER_OK,
Err(grow_error) => {
update_last_error(grow_error);
wasmer_result_t::WASMER_ERROR
}
}
}
/// Returns the current length of the given Table
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_table_length(table: *mut wasmer_table_t) -> uint32_t {
let table = unsafe { &*(table as *mut Table) };
table.size()
}
/// Frees memory for the given Table
#[allow(clippy::cast_ptr_alignment)]
#[no_mangle]
pub extern "C" fn wasmer_table_destroy(table: *mut wasmer_table_t) {
if !table.is_null() {
unsafe { Box::from_raw(table as *mut Table) };
}
}

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@ -0,0 +1,119 @@
//! Wasm values.
use libc::{int32_t, int64_t};
use wasmer_runtime::Value;
use wasmer_runtime_core::types::Type;
#[allow(non_camel_case_types)]
#[repr(u32)]
#[derive(Clone)]
pub enum wasmer_value_tag {
WASM_I32,
WASM_I64,
WASM_F32,
WASM_F64,
}
#[repr(C)]
#[derive(Clone, Copy)]
#[allow(non_snake_case)]
pub union wasmer_value {
pub I32: int32_t,
pub I64: int64_t,
pub F32: f32,
pub F64: f64,
}
#[repr(C)]
#[derive(Clone)]
pub struct wasmer_value_t {
pub tag: wasmer_value_tag,
pub value: wasmer_value,
}
impl From<wasmer_value_t> for Value {
fn from(v: wasmer_value_t) -> Self {
unsafe {
#[allow(unreachable_patterns, non_snake_case)]
match v {
wasmer_value_t {
tag: wasmer_value_tag::WASM_I32,
value: wasmer_value { I32 },
} => Value::I32(I32),
wasmer_value_t {
tag: wasmer_value_tag::WASM_I64,
value: wasmer_value { I64 },
} => Value::I64(I64),
wasmer_value_t {
tag: wasmer_value_tag::WASM_F32,
value: wasmer_value { F32 },
} => Value::F32(F32),
wasmer_value_t {
tag: wasmer_value_tag::WASM_F64,
value: wasmer_value { F64 },
} => Value::F64(F64),
_ => panic!("not implemented"),
}
}
}
}
impl From<Value> for wasmer_value_t {
fn from(val: Value) -> Self {
match val {
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 },
},
}
}
}
impl From<Type> for wasmer_value_tag {
fn from(ty: Type) -> Self {
#[allow(unreachable_patterns)]
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"),
}
}
}
impl From<wasmer_value_tag> for Type {
fn from(v: wasmer_value_tag) -> Self {
#[allow(unreachable_patterns)]
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"),
}
}
}
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,
}
}
}

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@ -0,0 +1,31 @@
<p align="center">
<a href="https://wasmer.io" target="_blank" rel="noopener noreferrer">
<img width="400" src="https://raw.githubusercontent.com/wasmerio/wasmer/master/logo.png" alt="Wasmer logo">
</a>
</p>
<p align="center">
<a href="https://circleci.com/gh/wasmerio/wasmer/">
<img src="https://img.shields.io/circleci/project/github/wasmerio/wasmer/master.svg" alt="Build Status">
</a>
<a href="https://github.com/wasmerio/wasmer/blob/master/LICENSE">
<img src="https://img.shields.io/github/license/wasmerio/wasmer.svg" alt="License">
</a>
<a href="https://spectrum.chat/wasmer">
<img src="https://withspectrum.github.io/badge/badge.svg" alt="Join the Wasmer Community">
</a>
<a href="https://crates.io/crates/wasmer-runtime-core">
<img src="https://img.shields.io/crates/d/wasmer-runtime-core.svg" alt="Number of downloads from crates.io">
</a>
<a href="https://docs.rs/wasmer-runtime-core">
<img src="https://docs.rs/wasmer-runtime-core/badge.svg" alt="Read our API documentation">
</a>
</p>
# Wasmer Runtime Core
Wasmer is a standalone JIT WebAssembly runtime, aiming to be fully
compatible with Emscripten, Rust and Go. [Learn
more](https://github.com/wasmerio/wasmer).
This crate represents the core of the runtime.

54
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@ -1,12 +1,41 @@
# Wasmer-Runtime <p align="center">
<a href="https://wasmer.io" target="_blank" rel="noopener noreferrer">
<img width="400" src="https://raw.githubusercontent.com/wasmerio/wasmer/master/logo.png" alt="Wasmer logo">
</a>
</p>
Wasmer-runtime is a library that makes embedding WebAssembly <p align="center">
in your application easy, efficient, and safe. <a href="https://circleci.com/gh/wasmerio/wasmer/">
<img src="https://img.shields.io/circleci/project/github/wasmerio/wasmer/master.svg" alt="Build Status">
</a>
<a href="https://github.com/wasmerio/wasmer/blob/master/LICENSE">
<img src="https://img.shields.io/github/license/wasmerio/wasmer.svg" alt="License">
</a>
<a href="https://spectrum.chat/wasmer">
<img src="https://withspectrum.github.io/badge/badge.svg" alt="Join the Wasmer Community">
</a>
<a href="https://crates.io/crates/wasmer-runtime">
<img src="https://img.shields.io/crates/d/wasmer-runtime.svg" alt="Number of downloads from crates.io">
</a>
<a href="https://docs.rs/wasmer-runtime">
<img src="https://docs.rs/wasmer-runtime/badge.svg" alt="Read our API documentation">
</a>
</p>
# How to use Wasmer-Runtime # Wasmer Runtime
The easiest way is to use the [`instantiate`] function to create an [`Instance`]. Wasmer is a standalone JIT WebAssembly runtime, aiming to be fully
Then you can use [`call`] or [`func`] and then [`call`][func.call] to call an exported function safely. compatible with Emscripten, Rust and Go. [Learn
more](https://github.com/wasmerio/wasmer).
This crate represents the high-level runtime API, making embedding
WebAssembly in your application easy, efficient, and safe.
## How to use Wasmer Runtime
The easiest way is to use the [`instantiate`] function to create an
[`Instance`]. Then you can use [`call`] or [`func`] and then
[`call`][func.call] to call an exported function safely.
[`instantiate`]: https://docs.rs/wasmer-runtime/*/wasmer_runtime/fn.instantiate.html [`instantiate`]: https://docs.rs/wasmer-runtime/*/wasmer_runtime/fn.instantiate.html
[`Instance`]: https://docs.rs/wasmer-runtime/*/wasmer_runtime/struct.Instance.html [`Instance`]: https://docs.rs/wasmer-runtime/*/wasmer_runtime/struct.Instance.html
@ -14,7 +43,7 @@ Then you can use [`call`] or [`func`] and then [`call`][func.call] to call an ex
[`func`]: https://docs.rs/wasmer-runtime/*/wasmer_runtime/struct.Instance.html#method.func [`func`]: https://docs.rs/wasmer-runtime/*/wasmer_runtime/struct.Instance.html#method.func
[func.call]: https://docs.rs/wasmer-runtime/*/wasmer_runtime/struct.Function.html#method.call [func.call]: https://docs.rs/wasmer-runtime/*/wasmer_runtime/struct.Function.html#method.call
## Here's an example: ## Example
Given this WebAssembly: Given this WebAssembly:
@ -27,7 +56,7 @@ Given this WebAssembly:
i32.add)) i32.add))
``` ```
compiled into wasm bytecode, we can call the exported "add_one" function: compiled into Wasm bytecode, we can call the exported `add_one` function:
```rust ```rust
static WASM: &'static [u8] = &[ static WASM: &'static [u8] = &[
@ -63,13 +92,14 @@ fn main() -> error::Result<()> {
} }
``` ```
# Additional Notes: ## Additional Notes
The `wasmer-runtime` is build to support compiler multiple backends. The `wasmer-runtime` crate is build to support multiple compiler
Currently, we support the [Cranelift] compiler with the [`wasmer-clif-backend`] crate. backends. Currently, we support the [Cranelift] compiler with the
[`wasmer-clif-backend`] crate by default.
You can specify the compiler you wish to use with the [`compile_with`] function. You can specify the compiler you wish to use with the [`compile_with`] function.
[Cranelift]: https://github.com/CraneStation/cranelift [Cranelift]: https://github.com/CraneStation/cranelift
[`wasmer-clif-backend`]: https://crates.io/crates/wasmer-clif-backend [`wasmer-clif-backend`]: https://crates.io/crates/wasmer-clif-backend
[`compile_with`]: https://docs.rs/wasmer-runtime/*/wasmer_runtime/fn.compile_with.html [`compile_with`]: https://docs.rs/wasmer-runtime/*/wasmer_runtime/fn.compile_with.html

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<p align="center">
<a href="https://wasmer.io" target="_blank" rel="noopener noreferrer">
<img width="400" src="https://raw.githubusercontent.com/wasmerio/wasmer/master/logo.png" alt="Wasmer logo">
</a>
</p>
<p align="center">
<a href="https://circleci.com/gh/wasmerio/wasmer/">
<img src="https://img.shields.io/circleci/project/github/wasmerio/wasmer/master.svg" alt="Build Status">
</a>
<a href="https://github.com/wasmerio/wasmer/blob/master/LICENSE">
<img src="https://img.shields.io/github/license/wasmerio/wasmer.svg" alt="License">
</a>
<a href="https://spectrum.chat/wasmer">
<img src="https://withspectrum.github.io/badge/badge.svg" alt="Join the Wasmer Community">
</a>
<a href="https://crates.io/crates/wasmer-spectests">
<img src="https://img.shields.io/crates/d/wasmer-spectests.svg" alt="Number of downloads from crates.io">
</a>
<a href="https://docs.rs/wasmer-spectests">
<img src="https://docs.rs/wasmer-spectests/badge.svg" alt="Read our API documentation">
</a>
</p>
# Wasmer Spectests
Wasmer is a standalone JIT WebAssembly runtime, aiming to be fully
compatible with Emscripten, Rust and Go. [Learn
more](https://github.com/wasmerio/wasmer).
This crate allows to test the Wasmer runtime against the official
specification test suite.

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<p align="center">
<a href="https://wasmer.io" target="_blank" rel="noopener noreferrer">
<img width="400" src="https://raw.githubusercontent.com/wasmerio/wasmer/master/logo.png" alt="Wasmer logo">
</a>
</p>
<p align="center">
<a href="https://circleci.com/gh/wasmerio/wasmer/">
<img src="https://img.shields.io/circleci/project/github/wasmerio/wasmer/master.svg" alt="Build Status">
</a>
<a href="https://github.com/wasmerio/wasmer/blob/master/LICENSE">
<img src="https://img.shields.io/github/license/wasmerio/wasmer.svg" alt="License">
</a>
<a href="https://spectrum.chat/wasmer">
<img src="https://withspectrum.github.io/badge/badge.svg" alt="Join the Wasmer Community">
</a>
<a href="https://crates.io/crates/wasmer-win-exception-handler">
<img src="https://img.shields.io/crates/d/wasmer-win-exception-handler.svg" alt="Number of downloads from crates.io">
</a>
<a href="https://docs.rs/wasmer-win-exception-handler">
<img src="https://docs.rs/wasmer-win-exception-handler/badge.svg" alt="Read our API documentation">
</a>
</p>
# Wasmer Windows Exception Handler
Wasmer is a standalone JIT WebAssembly runtime, aiming to be fully
compatible with Emscripten, Rust and Go. [Learn
more](https://github.com/wasmerio/wasmer).
This crate provides an API for exception handling on Windows.