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use crate::{FromToNativeWasmType, RuntimeError, TypedFunction, WasmTypeList};
use wasmer_types::RawValue;
use crate::native_type::NativeWasmTypeInto;
use crate::store::{AsStoreMut, AsStoreRef};
use crate::sys::engine::NativeEngineExt;
macro_rules! impl_native_traits {
( $( $x:ident ),* ) => {
#[allow(unused_parens, non_snake_case)]
impl<$( $x , )* Rets> TypedFunction<( $( $x ),* ), Rets>
where
$( $x: FromToNativeWasmType, )*
Rets: WasmTypeList,
{
/// Call the typed func and return results.
#[allow(unused_mut)]
#[allow(clippy::too_many_arguments)]
pub fn call(&self, store: &mut impl AsStoreMut, $( $x: $x, )* ) -> Result<Rets, RuntimeError> {
let anyfunc = unsafe {
*self.func.0
.handle
.get(store.as_store_ref().objects())
.anyfunc
.as_ptr()
.as_ref()
};
// Ensure all parameters come from the same context.
if $(!FromToNativeWasmType::is_from_store(&$x, store) ||)* false {
return Err(RuntimeError::new(
"cross-`Store` values are not supported",
));
}
// TODO: when `const fn` related features mature more, we can declare a single array
// of the correct size here.
let mut params_list = [ $( $x.to_native().into_raw(store) ),* ];
let mut rets_list_array = Rets::empty_array();
let rets_list: &mut [RawValue] = rets_list_array.as_mut();
let using_rets_array;
let args_rets: &mut [RawValue] = if params_list.len() > rets_list.len() {
using_rets_array = false;
params_list.as_mut()
} else {
using_rets_array = true;
for (i, &arg) in params_list.iter().enumerate() {
rets_list[i] = arg;
}
rets_list.as_mut()
};
let mut r;
loop {
let storeref = store.as_store_ref();
let config = storeref.engine().tunables().vmconfig();
r = unsafe {
wasmer_vm::wasmer_call_trampoline(
store.as_store_ref().signal_handler(),
config,
anyfunc.vmctx,
anyfunc.call_trampoline,
anyfunc.func_ptr,
args_rets.as_mut_ptr() as *mut u8,
)
};
let store_mut = store.as_store_mut();
if let Some(callback) = store_mut.inner.on_called.take() {
match callback(store_mut) {
Ok(wasmer_types::OnCalledAction::InvokeAgain) => { continue; }
Ok(wasmer_types::OnCalledAction::Finish) => { break; }
Ok(wasmer_types::OnCalledAction::Trap(trap)) => { return Err(RuntimeError::user(trap)) },
Err(trap) => { return Err(RuntimeError::user(trap)) },
}
}
break;
}
r?;
let num_rets = rets_list.len();
if !using_rets_array && num_rets > 0 {
let src_pointer = params_list.as_ptr();
let rets_list = &mut rets_list_array.as_mut()[0] as *mut RawValue;
unsafe {
// TODO: we can probably remove this copy by doing some clever `transmute`s.
// we know it's not overlapping because `using_rets_array` is false
std::ptr::copy_nonoverlapping(src_pointer,
rets_list,
num_rets);
}
}
Ok(unsafe { Rets::from_array(store, rets_list_array) })
// TODO: When the Host ABI and Wasm ABI are the same, we could do this instead:
// but we can't currently detect whether that's safe.
//
// let results = unsafe {
// wasmer_vm::catch_traps_with_result(self.vmctx, || {
// let f = std::mem::transmute::<_, unsafe extern "C" fn( *mut VMContext, $( $x, )*) -> Rets::CStruct>(self.address());
// // We always pass the vmctx
// f( self.vmctx, $( $x, )* )
// }).map_err(RuntimeError::from_trap)?
// };
// Ok(Rets::from_c_struct(results))
}
#[doc(hidden)]
#[allow(missing_docs)]
#[allow(unused_mut)]
#[allow(clippy::too_many_arguments)]
pub fn call_raw(&self, store: &mut impl AsStoreMut, mut params_list: Vec<RawValue> ) -> Result<Rets, RuntimeError> {
let anyfunc = unsafe {
*self.func.0
.handle
.get(store.as_store_ref().objects())
.anyfunc
.as_ptr()
.as_ref()
};
// TODO: when `const fn` related features mature more, we can declare a single array
// of the correct size here.
let mut rets_list_array = Rets::empty_array();
let rets_list: &mut [RawValue] = rets_list_array.as_mut();
let using_rets_array;
let args_rets: &mut [RawValue] = if params_list.len() > rets_list.len() {
using_rets_array = false;
params_list.as_mut()
} else {
using_rets_array = true;
for (i, &arg) in params_list.iter().enumerate() {
rets_list[i] = arg;
}
rets_list.as_mut()
};
let mut r;
loop {
let storeref = store.as_store_ref();
let config = storeref.engine().tunables().vmconfig();
r = unsafe {
wasmer_vm::wasmer_call_trampoline(
store.as_store_ref().signal_handler(),
config,
anyfunc.vmctx,
anyfunc.call_trampoline,
anyfunc.func_ptr,
args_rets.as_mut_ptr() as *mut u8,
)
};
let store_mut = store.as_store_mut();
if let Some(callback) = store_mut.inner.on_called.take() {
// TODO: OnCalledAction is needed for asyncify. It will be refactored with https://github.com/wasmerio/wasmer/issues/3451
match callback(store_mut) {
Ok(wasmer_types::OnCalledAction::InvokeAgain) => { continue; }
Ok(wasmer_types::OnCalledAction::Finish) => { break; }
Ok(wasmer_types::OnCalledAction::Trap(trap)) => { return Err(RuntimeError::user(trap)) },
Err(trap) => { return Err(RuntimeError::user(trap)) },
}
}
break;
}
r?;
let num_rets = rets_list.len();
if !using_rets_array && num_rets > 0 {
let src_pointer = params_list.as_ptr();
let rets_list = &mut rets_list_array.as_mut()[0] as *mut RawValue;
unsafe {
// TODO: we can probably remove this copy by doing some clever `transmute`s.
// we know it's not overlapping because `using_rets_array` is false
std::ptr::copy_nonoverlapping(src_pointer,
rets_list,
num_rets);
}
}
Ok(unsafe { Rets::from_array(store, rets_list_array) })
// TODO: When the Host ABI and Wasm ABI are the same, we could do this instead:
// but we can't currently detect whether that's safe.
//
// let results = unsafe {
// wasmer_vm::catch_traps_with_result(self.vmctx, || {
// let f = std::mem::transmute::<_, unsafe extern "C" fn( *mut VMContext, $( $x, )*) -> Rets::CStruct>(self.address());
// // We always pass the vmctx
// f( self.vmctx, $( $x, )* )
// }).map_err(RuntimeError::from_trap)?
// };
// Ok(Rets::from_c_struct(results))
}
}
};
}
impl_native_traits!();
impl_native_traits!(A1);
impl_native_traits!(A1, A2);
impl_native_traits!(A1, A2, A3);
impl_native_traits!(A1, A2, A3, A4);
impl_native_traits!(A1, A2, A3, A4, A5);
impl_native_traits!(A1, A2, A3, A4, A5, A6);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7, A8);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7, A8, A9);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16);
impl_native_traits!(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17);
impl_native_traits!(
A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18
);
impl_native_traits!(
A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19
);
impl_native_traits!(
A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20
);