Add unit test suites (#3490)

tests/unit/wasm-vm/wasm-apps/app2/main.c

@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2019 Intel Corporation. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <memory.h>
+#include <string.h>
+
+void
+on_init()
+{}
+
+int
+my_sqrt(int x, int y)
+{
+    return x * x + y * y;
+}
+
+void *
+null_pointer()
+{
+    void *ptr = NULL;
+    return ptr;
+}
+
+void *
+my_malloc(int size)
+{
+    return malloc(size);
+}
+
+void *
+my_calloc(int nmemb, int size)
+{
+    return calloc(nmemb, size);
+}
+
+void
+my_free(void *ptr)
+{
+    free(ptr);
+}
+
+void *
+my_memcpy(void *dst, void *src, int size)
+{
+    return memcpy(dst, src, size);
+}
+
+char *
+my_strdup(const char *s)
+{
+    return strdup(s);
+}
+
+int
+my_memcmp(const void *buf1, const void *buf2, int size)
+{
+    return memcmp(buf1, buf2, size);
+}
+
+int
+my_printf(const char *format, char *s)
+{
+    return printf(format, s);
+}
+
+int
+my_sprintf(char *buf1, const char *format, char *buf2)
+{
+    return sprintf(buf1, format, buf2);
+}
+
+int
+my_snprintf(char *buf1, int size, const char *format, char *buf2)
+{
+    return snprintf(buf1, size, format, buf2);
+}
+
+int
+my_puts(const char *s)
+{
+    return puts(s);
+}
+
+int
+my_putchar(int s)
+{
+    return putchar(s);
+}
+
+void *
+my_memmove(void *buf1, const void *buf2, int size)
+{
+    return memmove(buf1, buf2, size);
+}
+
+void *
+my_memset(void *buf, int c, int size)
+{
+    return memset(buf, c, size);
+}
+
+char *
+my_strchr(const char *s, int c)
+{
+    return strchr(s, c);
+}
+
+int
+my_strcmp(const char *buf1, const char *buf2)
+{
+    return strcmp(buf1, buf2);
+}
+
+char *
+my_strcpy(char *buf1, const char *buf2)
+{
+    return strcpy(buf1, buf2);
+}
+
+int
+my_strlen(const char *s)
+{
+    return (int)strlen(s);
+}
+
+int
+my_strncmp(const char *buf1, const char *buf2, int n)
+{
+    return strncmp(buf1, buf2, n);
+}
+
+char *
+my_strncpy(char *buf1, const char *buf2, int n)
+{
+    return strncpy(buf1, buf2, n);
+}