Initial commit of Hyperscan

unit/internal/unaligned.cpp

@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2015, Intel Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * 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.
+ *  * Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 "config.h"
+
+#include "gtest/gtest.h"
+#include "util/unaligned.h"
+
+TEST(Unaligned, StoreLoad16) {
+    char data[3];
+    memset(data, 0, sizeof(data));
+    char *ptr = &data[1];
+
+    unaligned_store_u16(ptr, (u16)~0u);
+    ASSERT_EQ((u16)~0u, unaligned_load_u16(ptr));
+    unaligned_store_u16(ptr, 0u);
+    ASSERT_EQ(0u, unaligned_load_u16(ptr));
+    unaligned_store_u16(ptr, (u16)0xf0f0u);
+    ASSERT_EQ(0xf0f0u, unaligned_load_u16(ptr));
+
+    for (u32 i = 0; i < 16; i++) {
+        const u16 val = 0x1u << i;
+        memset(data, 0xff, sizeof(data));
+        unaligned_store_u16(ptr, val);
+        ASSERT_EQ(val, unaligned_load_u16(ptr));
+    }
+}
+
+TEST(Unaligned, StoreLoad32) {
+    char data[5];
+    memset(data, 0, sizeof(data));
+    char *ptr = &data[1];
+
+    unaligned_store_u32(ptr, ~0u);
+    ASSERT_EQ(~0u, unaligned_load_u32(ptr));
+    unaligned_store_u32(ptr, 0u);
+    ASSERT_EQ(0u, unaligned_load_u32(ptr));
+    unaligned_store_u32(ptr, 0xf0f0f0f0u);
+    ASSERT_EQ(0xf0f0f0f0u, unaligned_load_u32(ptr));
+
+    for (u32 i = 0; i < 32; i++) {
+        const u32 val = 0x1u << i;
+        memset(data, 0xff, sizeof(data));
+        unaligned_store_u32(ptr, val);
+        ASSERT_EQ(val, unaligned_load_u32(ptr));
+    }
+}
+
+TEST(Unaligned, StoreLoad64) {
+    char data[9];
+    memset(data, 0, sizeof(data));
+    char *ptr = &data[1];
+
+    unaligned_store_u64a(ptr, ~0ull);
+    ASSERT_EQ(~0ull, unaligned_load_u64a(ptr));
+    unaligned_store_u64a(ptr, 0ull);
+    ASSERT_EQ(0ull, unaligned_load_u64a(ptr));
+    unaligned_store_u64a(ptr, 0xf0f0f0f0f0f0f0f0ull);
+    ASSERT_EQ(0xf0f0f0f0f0f0f0f0ull, unaligned_load_u64a(ptr));
+
+    for (u32 i = 0; i < 64; i++) {
+        const u64a val = 0x1ull << i;
+        memset(data, 0xff, sizeof(data));
+        unaligned_store_u64a(ptr, val);
+        ASSERT_EQ(val, unaligned_load_u64a(ptr));
+    }
+}