1//===--- GlobalMappingLayerTest.cpp - Unit test the global mapping layer --===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "llvm/ExecutionEngine/Orc/GlobalMappingLayer.h"
11#include "gtest/gtest.h"
12
13using namespace llvm;
14using namespace llvm::orc;
15
16namespace {
17
18struct MockBaseLayer {
19
20  typedef int ModuleSetHandleT;
21
22  JITSymbol findSymbol(const std::string &Name, bool ExportedSymbolsOnly) {
23    if (Name == "bar")
24      return llvm::orc::JITSymbol(0x4567, JITSymbolFlags::Exported);
25    return nullptr;
26  }
27
28};
29
30TEST(GlobalMappingLayerTest, Empty) {
31  MockBaseLayer M;
32  GlobalMappingLayer<MockBaseLayer> L(M);
33
34  // Test fall-through for missing symbol.
35  auto FooSym = L.findSymbol("foo", true);
36  EXPECT_FALSE(FooSym) << "Found unexpected symbol.";
37
38  // Test fall-through for symbol in base layer.
39  auto BarSym = L.findSymbol("bar", true);
40  EXPECT_EQ(BarSym.getAddress(), static_cast<TargetAddress>(0x4567))
41    << "Symbol lookup fall-through failed.";
42
43  // Test setup of a global mapping.
44  L.setGlobalMapping("foo", 0x0123);
45  auto FooSym2 = L.findSymbol("foo", true);
46  EXPECT_EQ(FooSym2.getAddress(), static_cast<TargetAddress>(0x0123))
47    << "Symbol mapping setup failed.";
48
49  // Test removal of a global mapping.
50  L.eraseGlobalMapping("foo");
51  auto FooSym3 = L.findSymbol("foo", true);
52  EXPECT_FALSE(FooSym3) << "Symbol mapping removal failed.";
53}
54
55}
56