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/* Copyright (C) 2020 Wildfire Games.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "lib/self_test.h"
#include "lib/byte_order.h"
#include <cstring>
class TestByteOrder : public CxxTest::TestSuite
{
public:
void test_conversion()
{
const u32 x = 0x01234567u;
u8 LS_byte;
memcpy(&LS_byte, &x, 1);
// little endian
if(LS_byte == 0x67)
{
TS_ASSERT_EQUALS(to_le16(0x0123u), 0x0123u);
TS_ASSERT_EQUALS(to_le32(0x01234567u), 0x01234567u);
TS_ASSERT_EQUALS(to_le64(0x0123456789ABCDEFull), 0x0123456789ABCDEFull);
TS_ASSERT_EQUALS(to_be16(0x0123u), 0x2301u);
TS_ASSERT_EQUALS(to_be32(0x01234567u), 0x67452301u);
TS_ASSERT_EQUALS(to_be64(0x0123456789ABCDEFull), 0xEFCDAB8967452301ull);
}
// big endian
else if(LS_byte == 0x01)
{
TS_ASSERT_EQUALS(to_le16(0x0123u), 0x2301u);
TS_ASSERT_EQUALS(to_le32(0x01234567u), 0x67452301u);
TS_ASSERT_EQUALS(to_le64(0x0123456789ABCDEFull), 0xEFCDAB8967452301ull);
TS_ASSERT_EQUALS(to_be16(0x0123u), 0x0123u);
TS_ASSERT_EQUALS(to_be32(0x01234567u), 0x01234567u);
TS_ASSERT_EQUALS(to_be64(0x0123456789ABCDEFull), 0x0123456789ABCDEFull);
}
else
TS_FAIL("endian determination failed");
// note: no need to test read_?e* / write_?e* - they are
// trivial wrappers on top of to_?e*.
}
void test_movzx()
{
const u8 d1[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
const u8 d2[] = { 0x43, 0x12, 0x23, 0xA4 };
TS_ASSERT_EQUALS(movzx_le64(d1, 1), 0x01ull);
TS_ASSERT_EQUALS(movzx_le64(d1, 2), 0x0201ull);
TS_ASSERT_EQUALS(movzx_le64(d1, 8), 0x0807060504030201ull);
TS_ASSERT_EQUALS(movzx_le64(d2, 4), 0xA4231243ull);
TS_ASSERT_EQUALS(movzx_le64(d2+3, 1), 0xA4ull);
TS_ASSERT_EQUALS(movzx_be64(d1, 1), 0x01ull);
TS_ASSERT_EQUALS(movzx_be64(d1, 2), 0x0102ull);
TS_ASSERT_EQUALS(movzx_be64(d1, 8), 0x0102030405060708ull);
TS_ASSERT_EQUALS(movzx_be64(d2, 4), 0x431223A4ull);
TS_ASSERT_EQUALS(movzx_be64(d2+3, 1), 0xA4ull);
}
void test_movsx()
{
const u8 d1[] = { 0x09, 0xFE };
const u8 d2[] = { 0xD9, 0x2C, 0xDD, 0x8F };
const u8 d3[] = { 0x92, 0x26, 0x88, 0xF1, 0x35, 0xAC, 0x01, 0x83 };
TS_ASSERT_EQUALS(movsx_le64(d1, 1), (i64)0x09ull);
TS_ASSERT_EQUALS(movsx_le64(d1, 2), (i64)0xFFFFFFFFFFFFFE09ull);
TS_ASSERT_EQUALS(movsx_le64(d2, 4), (i64)0xFFFFFFFF8FDD2CD9ull);
TS_ASSERT_EQUALS(movsx_le64(d3, 8), (i64)0x8301AC35F1882692ull);
TS_ASSERT_EQUALS(movsx_be64(d1, 1), (i64)0x09ull);
TS_ASSERT_EQUALS(movsx_be64(d1, 2), (i64)0x00000000000009FEull);
TS_ASSERT_EQUALS(movsx_be64(d2, 4), (i64)0xFFFFFFFFD92CDD8Full);
TS_ASSERT_EQUALS(movsx_be64(d3, 8), (i64)0x922688F135AC0183ull);
}
};
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