91 lines · cpp
1//===-------- X86_64Tests.cpp - Unit tests for the AArch64 backend --------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include <llvm/BinaryFormat/ELF.h>10#include <llvm/ExecutionEngine/JITLink/x86_64.h>11 12#include "gtest/gtest.h"13 14using namespace llvm;15using namespace llvm::jitlink;16using namespace llvm::jitlink::x86_64;17 18TEST(X86_64, EmptyLinkGraph) {19 LinkGraph G("foo", std::make_shared<orc::SymbolStringPool>(),20 Triple("x86_64-apple-darwin"), SubtargetFeatures(),21 getEdgeKindName);22 EXPECT_EQ(G.getName(), "foo");23 EXPECT_EQ(G.getTargetTriple().str(), "x86_64-apple-darwin");24 EXPECT_EQ(G.getPointerSize(), 8U);25 EXPECT_EQ(G.getEndianness(), llvm::endianness::little);26 EXPECT_TRUE(G.external_symbols().empty());27 EXPECT_TRUE(G.absolute_symbols().empty());28 EXPECT_TRUE(G.defined_symbols().empty());29 EXPECT_TRUE(G.blocks().empty());30}31 32TEST(X86_64, GOTAndStubs) {33 LinkGraph G("foo", std::make_shared<orc::SymbolStringPool>(),34 Triple("x86_64-apple-darwin"), SubtargetFeatures(),35 getEdgeKindName);36 37 auto &External = G.addExternalSymbol("external", 0, false);38 39 // First table accesses. We expect the graph to be empty:40 EXPECT_EQ(G.findSectionByName(GOTTableManager::getSectionName()), nullptr);41 EXPECT_EQ(G.findSectionByName(PLTTableManager::getSectionName()), nullptr);42 43 {44 // Create first GOT and PLT table managers and request a PLT stub. This45 // should force creation of both a PLT stub and GOT entry.46 GOTTableManager GOT(G);47 PLTTableManager PLT(G, GOT);48 49 PLT.getEntryForTarget(G, External);50 }51 52 auto *GOTSec = G.findSectionByName(GOTTableManager::getSectionName());53 EXPECT_NE(GOTSec, nullptr);54 if (GOTSec) {55 // Expect one entry in the GOT now.56 EXPECT_EQ(GOTSec->symbols_size(), 1U);57 EXPECT_EQ(GOTSec->blocks_size(), 1U);58 }59 60 auto *PLTSec = G.findSectionByName(PLTTableManager::getSectionName());61 EXPECT_NE(PLTSec, nullptr);62 if (PLTSec) {63 // Expect one entry in the PLT.64 EXPECT_EQ(PLTSec->symbols_size(), 1U);65 EXPECT_EQ(PLTSec->blocks_size(), 1U);66 }67 68 {69 // Create second GOT and PLT table managers and request a PLT stub. This70 // should force creation of both a PLT stub and GOT entry.71 GOTTableManager GOT(G);72 PLTTableManager PLT(G, GOT);73 74 PLT.getEntryForTarget(G, External);75 }76 77 EXPECT_EQ(G.findSectionByName(GOTTableManager::getSectionName()), GOTSec);78 if (GOTSec) {79 // Expect the same one entry in the GOT.80 EXPECT_EQ(GOTSec->symbols_size(), 1U);81 EXPECT_EQ(GOTSec->blocks_size(), 1U);82 }83 84 EXPECT_EQ(G.findSectionByName(PLTTableManager::getSectionName()), PLTSec);85 if (PLTSec) {86 // Expect the same one entry in the GOT.87 EXPECT_EQ(PLTSec->symbols_size(), 1U);88 EXPECT_EQ(PLTSec->blocks_size(), 1U);89 }90}91