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https://github.com/c64scene-ar/llvm-6502.git
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This compiles with no changes to clang/lld/lldb with MSVC and includes overloads to various functions which are used by those projects and llvm which have OwningPtr's as parameters. This should allow out of tree projects some time to move. There are also no changes to libs/Target, which should help out of tree targets have time to move, if necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203083 91177308-0d34-0410-b5e6-96231b3b80d8
153 lines
4.3 KiB
C++
153 lines
4.3 KiB
C++
//===- IRObjectFile.cpp - IR object file implementation ---------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Part of the IRObjectFile class implementation.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Bitcode/ReaderWriter.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Mangler.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Object/IRObjectFile.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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using namespace object;
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IRObjectFile::IRObjectFile(MemoryBuffer *Object, error_code &EC,
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LLVMContext &Context, bool BufferOwned)
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: SymbolicFile(Binary::ID_IR, Object, BufferOwned) {
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ErrorOr<Module*> MOrErr = parseBitcodeFile(Object, Context);
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if ((EC = MOrErr.getError()))
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return;
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M.reset(MOrErr.get());
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// If we have a DataLayout, setup a mangler.
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const DataLayout *DL = M->getDataLayout();
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if (!DL)
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return;
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Mang.reset(new Mangler(DL));
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}
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static const GlobalValue &getGV(DataRefImpl &Symb) {
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return *reinterpret_cast<GlobalValue*>(Symb.p & ~uintptr_t(3));
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}
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static uintptr_t skipEmpty(Module::const_alias_iterator I, const Module &M) {
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if (I == M.alias_end())
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return 3;
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const GlobalValue *GV = &*I;
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return reinterpret_cast<uintptr_t>(GV) | 2;
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}
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static uintptr_t skipEmpty(Module::const_global_iterator I, const Module &M) {
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if (I == M.global_end())
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return skipEmpty(M.alias_begin(), M);
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const GlobalValue *GV = &*I;
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return reinterpret_cast<uintptr_t>(GV) | 1;
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}
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static uintptr_t skipEmpty(Module::const_iterator I, const Module &M) {
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if (I == M.end())
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return skipEmpty(M.global_begin(), M);
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const GlobalValue *GV = &*I;
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return reinterpret_cast<uintptr_t>(GV) | 0;
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}
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void IRObjectFile::moveSymbolNext(DataRefImpl &Symb) const {
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const GlobalValue *GV = &getGV(Symb);
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const Module &M = *GV->getParent();
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uintptr_t Res;
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switch (Symb.p & 3) {
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case 0: {
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Module::const_iterator Iter(static_cast<const Function*>(GV));
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++Iter;
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Res = skipEmpty(Iter, M);
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break;
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}
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case 1: {
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Module::const_global_iterator Iter(static_cast<const GlobalVariable*>(GV));
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++Iter;
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Res = skipEmpty(Iter, M);
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break;
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}
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case 2: {
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Module::const_alias_iterator Iter(static_cast<const GlobalAlias*>(GV));
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++Iter;
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Res = skipEmpty(Iter, M);
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break;
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}
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case 3:
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llvm_unreachable("Invalid symbol reference");
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}
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Symb.p = Res;
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}
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error_code IRObjectFile::printSymbolName(raw_ostream &OS,
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DataRefImpl Symb) const {
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const GlobalValue &GV = getGV(Symb);
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if (Mang)
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Mang->getNameWithPrefix(OS, &GV, false);
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else
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OS << GV.getName();
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return object_error::success;
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}
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uint32_t IRObjectFile::getSymbolFlags(DataRefImpl Symb) const {
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const GlobalValue &GV = getGV(Symb);
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uint32_t Res = BasicSymbolRef::SF_None;
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if (GV.isDeclaration() || GV.hasAvailableExternallyLinkage())
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Res |= BasicSymbolRef::SF_Undefined;
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if (GV.hasPrivateLinkage() || GV.hasLinkerPrivateLinkage() ||
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GV.hasLinkerPrivateWeakLinkage())
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Res |= BasicSymbolRef::SF_FormatSpecific;
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if (!GV.hasLocalLinkage())
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Res |= BasicSymbolRef::SF_Global;
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if (GV.hasCommonLinkage())
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Res |= BasicSymbolRef::SF_Common;
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if (GV.hasLinkOnceLinkage() || GV.hasWeakLinkage())
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Res |= BasicSymbolRef::SF_Weak;
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return Res;
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}
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const GlobalValue &IRObjectFile::getSymbolGV(DataRefImpl Symb) const {
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const GlobalValue &GV = getGV(Symb);
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return GV;
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}
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basic_symbol_iterator IRObjectFile::symbol_begin_impl() const {
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Module::const_iterator I = M->begin();
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DataRefImpl Ret;
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Ret.p = skipEmpty(I, *M);
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return basic_symbol_iterator(BasicSymbolRef(Ret, this));
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}
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basic_symbol_iterator IRObjectFile::symbol_end_impl() const {
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DataRefImpl Ret;
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Ret.p = 3;
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return basic_symbol_iterator(BasicSymbolRef(Ret, this));
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}
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ErrorOr<SymbolicFile *> llvm::object::SymbolicFile::createIRObjectFile(
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MemoryBuffer *Object, LLVMContext &Context, bool BufferOwned) {
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error_code EC;
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std::unique_ptr<IRObjectFile> Ret(
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new IRObjectFile(Object, EC, Context, BufferOwned));
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if (EC)
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return EC;
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return Ret.release();
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}
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