Add build system scaffolding and libc headers

1 files changed, 18 insertions, 0 deletions

diff --git a/lib/libc/signal/pthread_kill.c b/lib/libc/signal/pthread_kill.c
new file mode 100644
index 00000000..9323a869
--- /dev/null
+++ b/lib/libc/signal/pthread_kill.c
@@ -0,0 +1,18 @@
+#include <thread.h>
+#include <asm-generic/signal.h>
+#include <syscall.h>
+
+typedef struct __thread_self *pthread_t;
+
+int pthread_kill(pthread_t thread, int sig)
+{
+	if (sig < 0 || sig > _NSIG) {
+		return EINVAL;
+	}
+
+	if (thread->tid == 0) {
+		return 0;
+	}
+
+	return syscall(tkill, thread->tid, sig);
+}