From 565228516c38f1d94eb679bc882d9869a3069aab Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Date: Mon, 26 Oct 2020 15:36:28 +0300
Subject: [PATCH] libc: minimal: Implement abort().

abort() is an important runtime function, oftentimes used to signal
abnormal execution conditions in generic applications. Worse, they
may be used under such circumstances in e.g. compiler support
libraries, in which case lack of implementation of this function
will lead to link error.

Fixes: #29541

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
---
 lib/libc/minimal/CMakeLists.txt        |  1 +
 lib/libc/minimal/include/stdlib.h      |  1 +
 lib/libc/minimal/source/stdlib/abort.c | 14 ++++++++++++++
 3 files changed, 16 insertions(+)
 create mode 100644 lib/libc/minimal/source/stdlib/abort.c

diff --git a/lib/libc/minimal/CMakeLists.txt b/lib/libc/minimal/CMakeLists.txt
index 2eeffadeac1..2c7afb115b2 100644
--- a/lib/libc/minimal/CMakeLists.txt
+++ b/lib/libc/minimal/CMakeLists.txt
@@ -4,6 +4,7 @@ zephyr_system_include_directories(include)
 
 zephyr_library()
 zephyr_library_sources(
+  source/stdlib/abort.c
   source/stdlib/atoi.c
   source/stdlib/strtol.c
   source/stdlib/strtoul.c
diff --git a/lib/libc/minimal/include/stdlib.h b/lib/libc/minimal/include/stdlib.h
index fe396d4f954..57def608efa 100644
--- a/lib/libc/minimal/include/stdlib.h
+++ b/lib/libc/minimal/include/stdlib.h
@@ -35,6 +35,7 @@ static inline void exit(int status)
 {
 	_exit(status);
 }
+void abort(void);
 
 int rand(void);
 
diff --git a/lib/libc/minimal/source/stdlib/abort.c b/lib/libc/minimal/source/stdlib/abort.c
new file mode 100644
index 00000000000..edda2b6bbb7
--- /dev/null
+++ b/lib/libc/minimal/source/stdlib/abort.c
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2020 Linaro Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdlib.h>
+#include <zephyr.h>
+
+void abort(void)
+{
+	printk("abort()\n");
+	k_panic();
+}