further restrict net package usage

Signed-off-by: leongross <leon.gross@9elements.com>

loader/goroot.go

@@ -227,13 +227,19 @@ func needsSyscallPackage(buildTags []string) bool {
 
 // linuxNetworking returns whether the unmodified go linux net stack should be used
 // until the full rework of the net package is done.
+// To ensure the correct build target, check for the following tags:
+// linux && !baremetal && !nintendoswitch && !tinygo.wasm
 func linuxNetworking(buildTags []string) bool {
+	targetLinux := false
 	for _, tag := range buildTags {
 		if tag == "linux" {
-			return true
+			targetLinux = true
+		}
+		if tag == "baremetal" || tag == "nintendoswitch" || tag == "tinygo.wasm" {
+			return false
 		}
 	}
-	return false
+	return targetLinux
 }
 
 // The boolean indicates whether to merge the subdirs.

src/runtime/netpoll.go

@@ -43,5 +43,5 @@ func poll_runtime_pollSetDeadline(pd *pollDesc, d int64, mode int) {
 //go:linkname poll_runtime_pollOpen internal/poll.runtime_pollOpen
 func poll_runtime_pollOpen(fd uintptr) (*pollDesc, int) {
 	// println("poll_runtime_pollOpen not implemented", fd)
-	return &pollDesc{runtimeCtx: uintptr(0xdeadbeef)}, pollNoError
+	return &pollDesc{runtimeCtx: uintptr(0x1337)}, pollNoError
 }

src/syscall/forklock.go

@@ -1,4 +1,4 @@
-//go:build tinygo && linux && !wasip1 && !wasip2 && !darwin
+//go:build tinygo && linux && !wasip1 && !wasip2 && !darwin && !baremetal
 
 package syscall