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
  12 using namespace lldb_private;
  13 using llvm::APInt;
  14
  15 TEST(RegisterValueTest, GetSet8) {
  16   RegisterValue R8(uint8_t(47));
  17   EXPECT_EQ(47u, R8.GetAsUInt8());
  18   R8 = uint8_t(42);
  19   EXPECT_EQ(42u, R8.GetAsUInt8());
  20   EXPECT_EQ(42u, R8.GetAsUInt16());
  21   EXPECT_EQ(42u, R8.GetAsUInt32());
  22   EXPECT_EQ(42u, R8.GetAsUInt64());
  23 }
  24
  25 TEST(RegisterValueTest, GetScalarValue) {
  26   using RV = RegisterValue;
  27   const auto &Get = [](const RV &V) -> llvm::Optional<Scalar> {
  28     Scalar S;
  29     if (V.GetScalarValue(S))
  30       return S;
  31     return llvm::None;
  32   };
  33   EXPECT_EQ(Get(RV(uint8_t(47))), Scalar(47));
  34   EXPECT_EQ(Get(RV(uint16_t(4747))), Scalar(4747));
  35   EXPECT_EQ(Get(RV(uint32_t(47474242))), Scalar(47474242));
  36   EXPECT_EQ(Get(RV(uint64_t(4747424247474242))), Scalar(4747424247474242));
  37   EXPECT_EQ(Get(RV(APInt::getMaxValue(128))), Scalar(APInt::getMaxValue(128)));
  38   EXPECT_EQ(Get(RV(47.5f)), Scalar(47.5f));
  39   EXPECT_EQ(Get(RV(47.5)), Scalar(47.5));
  40   EXPECT_EQ(Get(RV(47.5L)), Scalar(47.5L));
  41   EXPECT_EQ(Get(RV({0xff, 0xee, 0xdd, 0xcc}, lldb::eByteOrderLittle)),
  42             Scalar(0xccddeeff));
  43   EXPECT_EQ(Get(RV({0xff, 0xee, 0xdd, 0xcc}, lldb::eByteOrderBig)),
  44             Scalar(0xffeeddcc));
  45   EXPECT_EQ(Get(RV({0xff, 0xee, 0xdd, 0xcc, 0xbb, 0xaa, 0x99, 0x88, 0x77, 0x66,
  46                     0x55, 0x44, 0x33, 0x22, 0x11, 0x00},
  47                    lldb::eByteOrderLittle)),
  48             Scalar((APInt(128, 0x0011223344556677ull) << 64) |
  49                    APInt(128, 0x8899aabbccddeeff)));
  50   EXPECT_EQ(Get(RV({0xff, 0xee, 0xdd, 0xcc, 0xbb, 0xaa, 0x99, 0x88, 0x77, 0x66,
  51                     0x55, 0x44, 0x33, 0x22, 0x11, 0x00},
  52                    lldb::eByteOrderBig)),
  53             Scalar((APInt(128, 0xffeeddccbbaa9988ull) << 64) |
  54                    APInt(128, 0x7766554433221100)));
  55 }