15e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer//===- unittests/Support/EndianTest.cpp - Endian.h tests ------------------===// 25e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer// 35e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer// The LLVM Compiler Infrastructure 45e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer// 55e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer// This file is distributed under the University of Illinois Open Source 65e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer// License. See LICENSE.TXT for details. 75e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer// 85e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer//===----------------------------------------------------------------------===// 95e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer 105e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer#include "gtest/gtest.h" 115e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer#include "llvm/Support/Endian.h" 121f6efa3996dd1929fbc129203ce5009b620e6969Michael J. Spencer#include "llvm/Support/DataTypes.h" 135e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer#include <cstdlib> 145e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer#include <ctime> 155e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencerusing namespace llvm; 165e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencerusing namespace support; 175e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer 185e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer#undef max 195e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer 205e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencernamespace { 215e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer 225e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. SpencerTEST(Endian, Read) { 235e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer // These are 5 bytes so we can be sure at least one of the reads is unaligned. 245e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer unsigned char big[] = {0x00, 0x01, 0x02, 0x03, 0x04}; 255e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer unsigned char little[] = {0x00, 0x04, 0x03, 0x02, 0x01}; 265e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer int32_t BigAsHost = 0x00010203; 275e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(BigAsHost, (endian::read_be<int32_t, unaligned>(big))); 285e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer int32_t LittleAsHost = 0x02030400; 295e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(LittleAsHost, (endian::read_le<int32_t, unaligned>(little))); 305e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer 315e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ((endian::read_be<int32_t, unaligned>(big + 1)), 325e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer (endian::read_le<int32_t, unaligned>(little + 1))); 335e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer} 345e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer 355e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. SpencerTEST(Endian, Write) { 365e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer unsigned char data[5]; 375e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer endian::write_be<int32_t, unaligned>(data, -1362446643); 385e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[0], 0xAE); 395e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[1], 0xCA); 405e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[2], 0xB6); 415e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[3], 0xCD); 425e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer endian::write_be<int32_t, unaligned>(data + 1, -1362446643); 435e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[1], 0xAE); 445e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[2], 0xCA); 455e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[3], 0xB6); 465e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[4], 0xCD); 475e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer 485e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer endian::write_le<int32_t, unaligned>(data, -1362446643); 495e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[0], 0xCD); 505e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[1], 0xB6); 515e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[2], 0xCA); 525e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[3], 0xAE); 535e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer endian::write_le<int32_t, unaligned>(data + 1, -1362446643); 545e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[1], 0xCD); 555e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[2], 0xB6); 565e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[3], 0xCA); 575e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(data[4], 0xAE); 585e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer} 595e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer 605e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. SpencerTEST(Endian, PackedEndianSpecificIntegral) { 615e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer // These are 5 bytes so we can be sure at least one of the reads is unaligned. 625e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer unsigned char big[] = {0x00, 0x01, 0x02, 0x03, 0x04}; 635e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer unsigned char little[] = {0x00, 0x04, 0x03, 0x02, 0x01}; 645e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer big32_t *big_val = 655e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer reinterpret_cast<big32_t *>(big + 1); 665e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer little32_t *little_val = 675e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer reinterpret_cast<little32_t *>(little + 1); 685e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer 695e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer EXPECT_EQ(*big_val, *little_val); 705e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer} 715e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer 725e0b2bf657dd8b6b3bb58439e6cb293f3116687fMichael J. Spencer} 73