2017-12-21 07:45:38 +08:00
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/*
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2018-04-19 15:42:00 +08:00
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* Copyright (c) 2017 - 2018, Intel Corporation
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2017-12-21 07:45:38 +08:00
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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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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2018-04-19 15:42:00 +08:00
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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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