tools/nolibc/signal: move raise() to signal.h

This function is normally found in signal.h, and providing the file
eases porting of existing programs. Let's move it there.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/tools/include/nolibc/signal.h b/tools/include/nolibc/signal.h
new file mode 100644
index 000000000000..ef47e71e2be3
--- /dev/null
+++ b/tools/include/nolibc/signal.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * signal function definitions for NOLIBC
+ * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
+ */
+
+#ifndef _NOLIBC_SIGNAL_H
+#define _NOLIBC_SIGNAL_H
+
+#include "std.h"
+#include "arch.h"
+#include "types.h"
+#include "sys.h"
+
+/* This one is not marked static as it's needed by libgcc for divide by zero */
+__attribute__((weak,unused,section(".text.nolibc_raise")))
+int raise(int signal)
+{
+	return sys_kill(sys_getpid(), signal);
+}
+
+#endif /* _NOLIBC_SIGNAL_H */