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Add function signature parameters to set import func

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This commit is contained in:
Brandon Fish
2019-02-02 19:10:08 -06:00
parent d31c1c6068
commit 5d9e05c2f6
3 changed files with 32 additions and 3 deletions
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25
lib/runtime-c-api/src/lib.rs
View File

@ -183,6 +183,10 @@ pub unsafe extern "C" fn wasmer_imports_set_import_func(
namespace: *const c_char,
name: *const c_char,
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,
) {
let mut import_object = unsafe { Box::from_raw(import_object as *mut ImportObject) };
let namespace_c = unsafe { CStr::from_ptr(namespace) };
@ -190,10 +194,15 @@ pub unsafe extern "C" fn wasmer_imports_set_import_func(
let name_c = unsafe { CStr::from_ptr(name) };
let name_r = name_c.to_str().unwrap();
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 = Export::Function {
func: unsafe { FuncPointer::new(func as _) },
ctx: Context::Internal,
signature: Arc::new(FuncSig::new(vec![Type::I32, Type::I32], vec![])),
signature: Arc::new(FuncSig::new(params, returns)),
};
// TODO handle existing namespace
@ -257,3 +266,17 @@ impl From<wasmer_value_t> for Value {
}
}
}
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"),
}
}
}
}

4
lib/runtime-c-api/tests/test-import-function.c
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@ -13,7 +13,9 @@ void print_str(int32_t ptr, int32_t len, wasmer_instance_context_t *ctx) {
int main()
{
wasmer_import_object_t *import_object = wasmer_import_object_new();
wasmer_imports_set_import_func(import_object, "env", "print_str", print_str);
wasmer_value_tag params_sig[] = {WASM_I32, WASM_I32};
wasmer_value_tag returns_sig[] = {};
wasmer_imports_set_import_func(import_object, "env", "print_str", print_str, params_sig, 2, returns_sig, 0);
// Read the wasm file bytes
FILE *file = fopen("wasm_sample_app.wasm", "r");

6
lib/runtime-c-api/wasmer.h
View File

@ -46,7 +46,11 @@ wasmer_import_object_t *wasmer_import_object_new(void);
void wasmer_imports_set_import_func(wasmer_import_object_t *import_object,
const char *namespace_,
const char *name,
void (*func)(void *data));
void (*func)(void *data),
const wasmer_value_tag *params,
int params_len,
const wasmer_value_tag *returns,
int returns_len);
wasmer_call_result_t wasmer_instance_call(wasmer_instance_t *instance,
const char *name,