From 2b0268cf0d6a2acbc191ad22d86419d5828e6a22 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Fri, 26 Jan 2018 17:13:04 +0000
Subject: [PATCH] Implement abort() as a call to panic.

Sponsored by: Netflix
---
 stand/libsa/Makefile |  2 +-
 stand/libsa/abort.c  | 35 +++++++++++++++++++++++++++++++++++
 stand/libsa/stand.h  |  3 +++
 3 files changed, 39 insertions(+), 1 deletion(-)
 create mode 100644 stand/libsa/abort.c

diff --git a/stand/libsa/Makefile b/stand/libsa/Makefile
index 3b54e67a19cf..fbe27d40ee39 100644
--- a/stand/libsa/Makefile
+++ b/stand/libsa/Makefile
@@ -19,7 +19,7 @@ LIB?=		sa
 NO_PIC=
 
 # standalone components and stuff we have modified locally
-SRCS+=	gzguts.h zutil.h __main.c assert.c bcd.c environment.c getopt.c gets.c \
+SRCS+=	gzguts.h zutil.h __main.c abort.c assert.c bcd.c environment.c getopt.c gets.c \
 	globals.c pager.c panic.c printf.c strdup.c strerror.c strtol.c strtoul.c \
 	random.c sbrk.c twiddle.c zalloc.c zalloc_malloc.c
 
diff --git a/stand/libsa/abort.c b/stand/libsa/abort.c
new file mode 100644
index 000000000000..4b3a2c7e00c2
--- /dev/null
+++ b/stand/libsa/abort.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2018 Netflix. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <stand.h>
+
+void
+abort(void)
+{
+	panic("Bootloader aborted by abort");
+}
diff --git a/stand/libsa/stand.h b/stand/libsa/stand.h
index 7c93f83af56b..d1b84625cc56 100644
--- a/stand/libsa/stand.h
+++ b/stand/libsa/stand.h
@@ -346,6 +346,9 @@ extern int		unsetenv(const char *name);
 extern ev_sethook_t	env_noset;		/* refuse set operation */
 extern ev_unsethook_t	env_nounset;		/* refuse unset operation */
 
+/* stdlib.h routines */
+extern void		abort(void);
+
 /* BCD conversions (undocumented) */
 extern u_char const	bcd2bin_data[];
 extern u_char const	bin2bcd_data[];