Add trampoline-related functions to C API.

lib/runtime-c-api/src/lib.rs

@@ -95,6 +95,8 @@ pub mod instance;
 pub mod memory;
 pub mod module;
 pub mod table;
+#[cfg(all(unix, target_arch = "x86_64"))]
+pub mod trampoline;
 pub mod value;
 
 #[allow(non_camel_case_types)]

lib/runtime-c-api/src/trampoline.rs

@@ -0,0 +1,54 @@
+use std::ffi::c_void;
+use wasmer_runtime_core::trampoline::*;
+
+#[repr(C)]
+pub struct wasmer_trampoline_buffer_builder_t;
+
+#[repr(C)]
+pub struct wasmer_trampoline_buffer_t;
+
+#[repr(C)]
+pub struct wasmer_trampoline_callable_t;
+
+#[no_mangle]
+pub extern "C" fn wasmer_trampoline_buffer_builder_new() -> *mut wasmer_trampoline_buffer_builder_t
+{
+    Box::into_raw(Box::new(TrampolineBufferBuilder::new())) as *mut _
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn wasmer_trampoline_buffer_builder_add_function(
+    b: *mut wasmer_trampoline_buffer_builder_t,
+    f: *const wasmer_trampoline_callable_t,
+    ctx: *const c_void,
+) -> usize {
+    let b = &mut *(b as *mut TrampolineBufferBuilder);
+    b.add_function(f as *const CallTarget, ctx as *const CallContext)
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn wasmer_trampoline_buffer_builder_build(
+    b: *mut wasmer_trampoline_buffer_builder_t,
+) -> *mut wasmer_trampoline_buffer_t {
+    let b = Box::from_raw(b as *mut TrampolineBufferBuilder);
+    Box::into_raw(Box::new(b.build())) as *mut _
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn wasmer_trampoline_buffer_destroy(b: *mut wasmer_trampoline_buffer_t) {
+    Box::from_raw(b);
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn wasmer_trampoline_buffer_get_trampoline(
+    b: *const wasmer_trampoline_buffer_t,
+    idx: usize,
+) -> *const wasmer_trampoline_callable_t {
+    let b = &*(b as *const TrampolineBuffer);
+    b.get_trampoline(idx) as _
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn wasmer_trampoline_get_context() -> *mut c_void {
+    get_context() as *const c_void as *mut c_void
+}