From 8b0a236e66c2ba99a085d2ca79db9e979856e0cd Mon Sep 17 00:00:00 2001
From: =?utf8?q?=C5=81ukasz=20Stelmach?= <l.stelmach@samsung.com>
Date: Mon, 28 Nov 2016 14:09:19 +0100
Subject: [PATCH] tests: add a simple test

test1-crash crashes and dumps a core. test1-sleep enters an infinite
sleep enabling ptrace-based stack examination. test1-ill triggers
the "illegal instruction" exception (SIGILL).

Change-Id: I995f5ce8817e49ec57bac6cac8e7f458807d03f0
---
 CMakeLists.txt       |  2 ++
 tests/CMakeLists.txt | 11 +++++++++
 tests/test1.c        | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 81 insertions(+)
 create mode 100644 tests/CMakeLists.txt
 create mode 100644 tests/test1.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7bd6432..7dc9668 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,3 +15,5 @@ ADD_SUBDIRECTORY(src/crash-stack)
 
 ADD_SUBDIRECTORY(src/dump_systemstate)
 ADD_SUBDIRECTORY(src/log_dump)
+ADD_SUBDIRECTORY(tests)
+
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
new file mode 100644
index 0000000..043bdcc
--- /dev/null
+++ b/tests/CMakeLists.txt
@@ -0,0 +1,11 @@
+# tests
+set(CMAKE_C_FLAGS "-g -O0 -fno-omit-frame-pointer")
+
+if (${CMAKE_SYSTEM_PROCESSOR} STREQUAL "armv7l")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -marm")
+endif ()
+
+add_executable(test1-crash test1.c)
+add_executable(test1-sleep test1.c)
+add_executable(test1-ill test1.c)
+
diff --git a/tests/test1.c b/tests/test1.c
new file mode 100644
index 0000000..016a857
--- /dev/null
+++ b/tests/test1.c
@@ -0,0 +1,68 @@
+#include <libgen.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int do_sleep=0;
+int do_ill=0;
+
+#if defined(__arm__)
+char ill_buf[] = { 0xf0, 0x00, 0x00, 0xf0 };
+#elif defined(__aarch64__)
+char ill_buf[] = { 0x22, 0x00, 0x00, 0xf9 };
+#elif defined(__i386__) || defined(__x86_64__)
+char ill_buf[] = { 0x06, 0x00, 0x00, 0x00 };
+#else
+#error "Unsupported architecture"
+#endif
+
+int main(int ac, char *av[]);
+
+void(*baz)(void);
+
+int bar(int a, int b){
+	int *c=(int*)0;
+	if (do_ill)
+		baz();
+	if (do_sleep)
+		sleep(-1);
+	return a + b + *c;
+}
+
+int foo(int c){
+	int a=1;
+	int b=2;
+	return bar(a+c,b+c);
+}
+
+int *memory;
+
+int allocate(size_t amount) {
+	size_t i;
+	memory = malloc(amount);
+
+	if (memory == NULL)
+		exit(1);
+
+	for (i=0; i < amount/sizeof(size_t); i++) {
+		memory[i]=i;
+	}
+	return 0;
+}
+
+int main(int ac, char* av[])
+{
+	if (strcmp(basename(av[0]), "test1-sleep") == 0)
+		do_sleep = 1;
+	if (strcmp(basename(av[0]), "test1-ill") == 0)
+		do_ill = 1;
+	baz = mmap(0, sizeof(ill_buf), PROT_READ|PROT_WRITE|PROT_EXEC,
+		   MAP_PRIVATE|MAP_ANON, -1, 0);
+	memcpy(baz, ill_buf, sizeof(ill_buf));
+	allocate(256*1024*1024);
+	return foo(2);
+}
-- 
2.7.4