vendor dependencies, make some changes to how input is done

vendor/github.com/ebitengine/purego/internal/fakecgo/go_util.go

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build darwin || freebsd || linux
+
+package fakecgo
+
+import "unsafe"
+
+// _cgo_thread_start is split into three parts in cgo since only one part is system dependent (keep it here for easier handling)
+
+// _cgo_thread_start(ThreadStart *arg) (runtime/cgo/gcc_util.c)
+// This get's called instead of the go code for creating new threads
+// -> pthread_* stuff is used, so threads are setup correctly for C
+// If this is missing, TLS is only setup correctly on thread 1!
+// This function should be go:systemstack instead of go:nosplit (but that requires runtime)
+//
+//go:nosplit
+//go:norace
+func x_cgo_thread_start(arg *ThreadStart) {
+	var ts *ThreadStart
+	// Make our own copy that can persist after we return.
+	//	_cgo_tsan_acquire();
+	ts = (*ThreadStart)(malloc(unsafe.Sizeof(*ts)))
+	//	_cgo_tsan_release();
+	if ts == nil {
+		println("fakecgo: out of memory in thread_start")
+		abort()
+	}
+	// *ts = *arg would cause a writebarrier so use memmove instead
+	memmove(unsafe.Pointer(ts), unsafe.Pointer(arg), unsafe.Sizeof(*ts))
+	_cgo_sys_thread_start(ts) // OS-dependent half
+}