47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
/*
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* Copyright (C) 2017-2018 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#include "runtime/helpers/ptr_math.h"
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#include "gtest/gtest.h"
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TEST(PtrMath, ptrOffset) {
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auto addrBefore = (uintptr_t)ptrGarbage;
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auto ptrBefore = addrBefore;
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size_t offset = 0x1234;
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auto ptrAfter = ptrOffset(ptrBefore, offset);
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auto addrAfter = ptrAfter;
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EXPECT_EQ(offset, addrAfter - addrBefore);
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}
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TEST(PtrMath, ptrDiff) {
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size_t offset = 0x1234;
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auto addrBefore = (uintptr_t)ptrGarbage;
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auto addrAfter = addrBefore + offset;
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EXPECT_EQ(offset, ptrDiff(addrAfter, addrBefore));
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}
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TEST(PtrMath, addrToPtr) {
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uint32_t addr32Bit = 0x3456;
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uint64_t addr64Bit = 0xf000000000003456;
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void *ptr32BitAddr = (void *)((uintptr_t)addr32Bit);
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void *ptr64BitAddr = (void *)((uintptr_t)addr64Bit);
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EXPECT_EQ(ptr32BitAddr, addrToPtr(addr32Bit));
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EXPECT_EQ(ptr64BitAddr, addrToPtr(addr64Bit));
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}
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TEST(PtrMath, givenCastToUint64FunctionWhenItIsCalledThenProperValueIsReturned) {
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uintptr_t address = 0xf0000000;
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void *addressWithTrailingBitSet = reinterpret_cast<void *>(address);
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uint64_t expectedUint64Address = 0xf0000000;
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auto uintAddress = castToUint64(addressWithTrailingBitSet);
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EXPECT_EQ(uintAddress, expectedUint64Address);
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}
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