lldb/unittests/Utility/RegisterValueTest.cpp

   1 //===-- RegisterValueTest.cpp ---------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "lldb/Utility/RegisterValue.h"
  10 #include "gtest/gtest.h"
  11 #include <optional>
  12
  13 using namespace lldb_private;
  14 using llvm::APInt;
  15
  16 TEST(RegisterValueTest, GetSet8) {
  17   RegisterValue R8(uint8_t(47));
  18   EXPECT_EQ(47u, R8.GetAsUInt8());
  19   R8 = uint8_t(42);
  20   EXPECT_EQ(42u, R8.GetAsUInt8());
  21   EXPECT_EQ(42u, R8.GetAsUInt16());
  22   EXPECT_EQ(42u, R8.GetAsUInt32());
  23   EXPECT_EQ(42u, R8.GetAsUInt64());
  24 }
  25
  26 TEST(RegisterValueTest, GetScalarValue) {
  27   using RV = RegisterValue;
  28   const auto &Get = [](const RV &V) -> std::optional<Scalar> {
  29     Scalar S;
  30     if (V.GetScalarValue(S))
  31       return S;
  32     return std::nullopt;
  33   };
  34   EXPECT_EQ(Get(RV(uint8_t(47))), Scalar(47));
  35   EXPECT_EQ(Get(RV(uint16_t(4747))), Scalar(4747));
  36   EXPECT_EQ(Get(RV(uint32_t(47474242))), Scalar(47474242));
  37   EXPECT_EQ(Get(RV(uint64_t(4747424247474242))), Scalar(4747424247474242));
  38   EXPECT_EQ(Get(RV(APInt::getMaxValue(128))), Scalar(APInt::getMaxValue(128)));
  39   EXPECT_EQ(Get(RV(47.5f)), Scalar(47.5f));
  40   EXPECT_EQ(Get(RV(47.5)), Scalar(47.5));
  41   EXPECT_EQ(Get(RV(47.5L)), Scalar(47.5L));
  42   EXPECT_EQ(Get(RV({0xff, 0xee, 0xdd, 0xcc}, lldb::eByteOrderLittle)),
  43             Scalar(0xccddeeff));
  44   EXPECT_EQ(Get(RV({0xff, 0xee, 0xdd, 0xcc}, lldb::eByteOrderBig)),
  45             Scalar(0xffeeddcc));
  46   EXPECT_EQ(Get(RV({0xff, 0xee, 0xdd, 0xcc, 0xbb, 0xaa, 0x99, 0x88, 0x77, 0x66,
  47                     0x55, 0x44, 0x33, 0x22, 0x11, 0x00},
  48                    lldb::eByteOrderLittle)),
  49             Scalar((APInt(128, 0x0011223344556677ull) << 64) |
  50                    APInt(128, 0x8899aabbccddeeff)));
  51   EXPECT_EQ(Get(RV({0xff, 0xee, 0xdd, 0xcc, 0xbb, 0xaa, 0x99, 0x88, 0x77, 0x66,
  52                     0x55, 0x44, 0x33, 0x22, 0x11, 0x00},
  53                    lldb::eByteOrderBig)),
  54             Scalar((APInt(128, 0xffeeddccbbaa9988ull) << 64) |
  55                    APInt(128, 0x7766554433221100)));
  56 }