//
//===----------------------------------------------------------------------===//
-#include "gtest/gtest.h"
#include "llvm/Support/Endian.h"
-#include "llvm/System/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
+#include "gtest/gtest.h"
#include <cstdlib>
#include <ctime>
using namespace llvm;
TEST(Endian, Read) {
// These are 5 bytes so we can be sure at least one of the reads is unaligned.
- unsigned char big[] = {0x00, 0x01, 0x02, 0x03, 0x04};
- unsigned char little[] = {0x00, 0x04, 0x03, 0x02, 0x01};
+ unsigned char bigval[] = {0x00, 0x01, 0x02, 0x03, 0x04};
+ unsigned char littleval[] = {0x00, 0x04, 0x03, 0x02, 0x01};
int32_t BigAsHost = 0x00010203;
- EXPECT_EQ(BigAsHost, (endian::read_be<int32_t, unaligned>(big)));
+ EXPECT_EQ(BigAsHost, (endian::read<int32_t, big, unaligned>(bigval)));
int32_t LittleAsHost = 0x02030400;
- EXPECT_EQ(LittleAsHost, (endian::read_le<int32_t, unaligned>(little)));
+ EXPECT_EQ(LittleAsHost,(endian::read<int32_t, little, unaligned>(littleval)));
+
+ EXPECT_EQ((endian::read<int32_t, big, unaligned>(bigval + 1)),
+ (endian::read<int32_t, little, unaligned>(littleval + 1)));
+}
+
+TEST(Endian, ReadBitAligned) {
+ // Simple test to make sure we properly pull out the 0x0 word.
+ unsigned char littleval[] = {0x3f, 0x00, 0x00, 0x00, 0xc0, 0xff, 0xff, 0xff};
+ unsigned char bigval[] = {0x00, 0x00, 0x00, 0x3f, 0xff, 0xff, 0xff, 0xc0};
+ EXPECT_EQ(
+ (endian::readAtBitAlignment<int, little, unaligned>(&littleval[0], 6)),
+ 0x0);
+ EXPECT_EQ((endian::readAtBitAlignment<int, big, unaligned>(&bigval[0], 6)),
+ 0x0);
+ // Test to make sure that signed right shift of 0xf0000000 is masked
+ // properly.
+ unsigned char littleval2[] = {0x00, 0x00, 0x00, 0xf0, 0x00, 0x00, 0x00, 0x00};
+ unsigned char bigval2[] = {0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+ EXPECT_EQ(
+ (endian::readAtBitAlignment<int, little, unaligned>(&littleval2[0], 4)),
+ 0x0f000000);
+ EXPECT_EQ((endian::readAtBitAlignment<int, big, unaligned>(&bigval2[0], 4)),
+ 0x0f000000);
+ // Test to make sure left shift of start bit doesn't overflow.
+ EXPECT_EQ(
+ (endian::readAtBitAlignment<int, little, unaligned>(&littleval2[0], 1)),
+ 0x78000000);
+ EXPECT_EQ((endian::readAtBitAlignment<int, big, unaligned>(&bigval2[0], 1)),
+ 0x78000000);
+ // Test to make sure 64-bit int doesn't overflow.
+ unsigned char littleval3[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+ unsigned char bigval3[] = {0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+ EXPECT_EQ((endian::readAtBitAlignment<int64_t, little, unaligned>(
+ &littleval3[0], 4)),
+ 0x0f00000000000000);
+ EXPECT_EQ(
+ (endian::readAtBitAlignment<int64_t, big, unaligned>(&bigval3[0], 4)),
+ 0x0f00000000000000);
+}
+
+TEST(Endian, WriteBitAligned) {
+ // This test ensures that signed right shift of 0xffffaa is masked
+ // properly.
+ unsigned char bigval[8] = {0x00};
+ endian::writeAtBitAlignment<int32_t, big, unaligned>(bigval, (int)0xffffaaaa,
+ 4);
+ EXPECT_EQ(bigval[0], 0xff);
+ EXPECT_EQ(bigval[1], 0xfa);
+ EXPECT_EQ(bigval[2], 0xaa);
+ EXPECT_EQ(bigval[3], 0xa0);
+ EXPECT_EQ(bigval[4], 0x00);
+ EXPECT_EQ(bigval[5], 0x00);
+ EXPECT_EQ(bigval[6], 0x00);
+ EXPECT_EQ(bigval[7], 0x0f);
+
+ unsigned char littleval[8] = {0x00};
+ endian::writeAtBitAlignment<int32_t, little, unaligned>(littleval,
+ (int)0xffffaaaa, 4);
+ EXPECT_EQ(littleval[0], 0xa0);
+ EXPECT_EQ(littleval[1], 0xaa);
+ EXPECT_EQ(littleval[2], 0xfa);
+ EXPECT_EQ(littleval[3], 0xff);
+ EXPECT_EQ(littleval[4], 0x0f);
+ EXPECT_EQ(littleval[5], 0x00);
+ EXPECT_EQ(littleval[6], 0x00);
+ EXPECT_EQ(littleval[7], 0x00);
+
+ // This test makes sure 1<<31 doesn't overflow.
+ // Test to make sure left shift of start bit doesn't overflow.
+ unsigned char bigval2[8] = {0x00};
+ endian::writeAtBitAlignment<int32_t, big, unaligned>(bigval2, (int)0xffffffff,
+ 1);
+ EXPECT_EQ(bigval2[0], 0xff);
+ EXPECT_EQ(bigval2[1], 0xff);
+ EXPECT_EQ(bigval2[2], 0xff);
+ EXPECT_EQ(bigval2[3], 0xfe);
+ EXPECT_EQ(bigval2[4], 0x00);
+ EXPECT_EQ(bigval2[5], 0x00);
+ EXPECT_EQ(bigval2[6], 0x00);
+ EXPECT_EQ(bigval2[7], 0x01);
- EXPECT_EQ((endian::read_be<int32_t, unaligned>(big + 1)),
- (endian::read_le<int32_t, unaligned>(little + 1)));
+ unsigned char littleval2[8] = {0x00};
+ endian::writeAtBitAlignment<int32_t, little, unaligned>(littleval2,
+ (int)0xffffffff, 1);
+ EXPECT_EQ(littleval2[0], 0xfe);
+ EXPECT_EQ(littleval2[1], 0xff);
+ EXPECT_EQ(littleval2[2], 0xff);
+ EXPECT_EQ(littleval2[3], 0xff);
+ EXPECT_EQ(littleval2[4], 0x01);
+ EXPECT_EQ(littleval2[5], 0x00);
+ EXPECT_EQ(littleval2[6], 0x00);
+ EXPECT_EQ(littleval2[7], 0x00);
+
+ // Test to make sure 64-bit int doesn't overflow.
+ unsigned char bigval64[16] = {0x00};
+ endian::writeAtBitAlignment<int64_t, big, unaligned>(
+ bigval64, (int64_t)0xffffffffffffffff, 1);
+ EXPECT_EQ(bigval64[0], 0xff);
+ EXPECT_EQ(bigval64[1], 0xff);
+ EXPECT_EQ(bigval64[2], 0xff);
+ EXPECT_EQ(bigval64[3], 0xff);
+ EXPECT_EQ(bigval64[4], 0xff);
+ EXPECT_EQ(bigval64[5], 0xff);
+ EXPECT_EQ(bigval64[6], 0xff);
+ EXPECT_EQ(bigval64[7], 0xfe);
+ EXPECT_EQ(bigval64[8], 0x00);
+ EXPECT_EQ(bigval64[9], 0x00);
+ EXPECT_EQ(bigval64[10], 0x00);
+ EXPECT_EQ(bigval64[11], 0x00);
+ EXPECT_EQ(bigval64[12], 0x00);
+ EXPECT_EQ(bigval64[13], 0x00);
+ EXPECT_EQ(bigval64[14], 0x00);
+ EXPECT_EQ(bigval64[15], 0x01);
+
+ unsigned char littleval64[16] = {0x00};
+ endian::writeAtBitAlignment<int64_t, little, unaligned>(
+ littleval64, (int64_t)0xffffffffffffffff, 1);
+ EXPECT_EQ(littleval64[0], 0xfe);
+ EXPECT_EQ(littleval64[1], 0xff);
+ EXPECT_EQ(littleval64[2], 0xff);
+ EXPECT_EQ(littleval64[3], 0xff);
+ EXPECT_EQ(littleval64[4], 0xff);
+ EXPECT_EQ(littleval64[5], 0xff);
+ EXPECT_EQ(littleval64[6], 0xff);
+ EXPECT_EQ(littleval64[7], 0xff);
+ EXPECT_EQ(littleval64[8], 0x01);
+ EXPECT_EQ(littleval64[9], 0x00);
+ EXPECT_EQ(littleval64[10], 0x00);
+ EXPECT_EQ(littleval64[11], 0x00);
+ EXPECT_EQ(littleval64[12], 0x00);
+ EXPECT_EQ(littleval64[13], 0x00);
+ EXPECT_EQ(littleval64[14], 0x00);
+ EXPECT_EQ(littleval64[15], 0x00);
}
TEST(Endian, Write) {
unsigned char data[5];
- endian::write_be<int32_t, unaligned>(data, -1362446643);
+ endian::write<int32_t, big, unaligned>(data, -1362446643);
EXPECT_EQ(data[0], 0xAE);
EXPECT_EQ(data[1], 0xCA);
EXPECT_EQ(data[2], 0xB6);
EXPECT_EQ(data[3], 0xCD);
- endian::write_be<int32_t, unaligned>(data + 1, -1362446643);
+ endian::write<int32_t, big, unaligned>(data + 1, -1362446643);
EXPECT_EQ(data[1], 0xAE);
EXPECT_EQ(data[2], 0xCA);
EXPECT_EQ(data[3], 0xB6);
EXPECT_EQ(data[4], 0xCD);
- endian::write_le<int32_t, unaligned>(data, -1362446643);
+ endian::write<int32_t, little, unaligned>(data, -1362446643);
EXPECT_EQ(data[0], 0xCD);
EXPECT_EQ(data[1], 0xB6);
EXPECT_EQ(data[2], 0xCA);
EXPECT_EQ(data[3], 0xAE);
- endian::write_le<int32_t, unaligned>(data + 1, -1362446643);
+ endian::write<int32_t, little, unaligned>(data + 1, -1362446643);
EXPECT_EQ(data[1], 0xCD);
EXPECT_EQ(data[2], 0xB6);
EXPECT_EQ(data[3], 0xCA);
EXPECT_EQ(*big_val, *little_val);
}
-}
+} // end anon namespace
projects / oota-llvm.git / blobdiff