From 5145c11fd8fe38162ae85e5ab888553c309eedf8 Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@member.fsf.org>
Date: Tue, 29 Dec 2015 21:56:27 +0100
Subject: halt + hcf
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Signed-off-by: Mattias Andrée <maandree@member.fsf.org>
---
 include/unistd.h  | 27 +++++++++++++++++++++++++++
 src/unistd/halt.c | 36 ++++++++++++++++++++++++++++++++++++
 src/unistd/hcf.c  | 37 +++++++++++++++++++++++++++++++++++++
 3 files changed, 100 insertions(+)
 create mode 100644 src/unistd/halt.c
 create mode 100644 src/unistd/hcf.c

diff --git a/include/unistd.h b/include/unistd.h
index dc8e5d5..bb077c1 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -1354,6 +1354,33 @@ ssize_t pwriten(int, const void*, size_t);
 #endif
 
 
+#if defined(__SLIBC_SOURCE)
+/**
+ * Halt the process in definitely.
+ * This function never returns.
+ * 
+ * This is a slibc extension.
+ * 
+ * @etymology  (Halt)!
+ * 
+ * @since  Always.
+ */
+__noreturn void halt(void);
+
+/**
+ * Halt and catch fire!
+ * This function never returns.
+ * 
+ * This is a slibc extension.
+ * 
+ * @etymology  (H)alt and (c)atch (f)rie!
+ * 
+ * @since  Always.
+ */
+__noreturn void hcf(void);
+#endif
+
+
 
 #endif
 
diff --git a/src/unistd/halt.c b/src/unistd/halt.c
new file mode 100644
index 0000000..855584f
--- /dev/null
+++ b/src/unistd/halt.c
@@ -0,0 +1,36 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <unistd.h>
+
+
+
+/**
+ * Halt the process in definitely.
+ * This function never returns.
+ * 
+ * This is a slibc extension.
+ * 
+ * @etymology  (Halt)!
+ * 
+ * @since  Always.
+ */
+void halt(void)
+{
+  for (;; pause());
+}
+
diff --git a/src/unistd/hcf.c b/src/unistd/hcf.c
new file mode 100644
index 0000000..160fa63
--- /dev/null
+++ b/src/unistd/hcf.c
@@ -0,0 +1,37 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <unistd.h>
+
+
+
+/**
+ * Halt and catch fire!
+ * This function never returns.
+ * 
+ * This is a slibc extension.
+ * 
+ * @etymology  (H)alt and (c)atch (f)rie!
+ * 
+ * @since  Always.
+ */
+void hcf(void)
+{
+ catch_fire:
+  goto catch_fire;
+}
+
-- 
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