You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
103 lines
3.5 KiB
103 lines
3.5 KiB
//===- TapiFile.cpp -------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the Text-based Dynamcic Library Stub format.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Object/TapiFile.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Object/Error.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
|
|
using namespace llvm;
|
|
using namespace MachO;
|
|
using namespace object;
|
|
|
|
static constexpr StringLiteral ObjC1ClassNamePrefix = ".objc_class_name_";
|
|
static constexpr StringLiteral ObjC2ClassNamePrefix = "_OBJC_CLASS_$_";
|
|
static constexpr StringLiteral ObjC2MetaClassNamePrefix = "_OBJC_METACLASS_$_";
|
|
static constexpr StringLiteral ObjC2EHTypePrefix = "_OBJC_EHTYPE_$_";
|
|
static constexpr StringLiteral ObjC2IVarPrefix = "_OBJC_IVAR_$_";
|
|
|
|
static uint32_t getFlags(const Symbol *Sym) {
|
|
uint32_t Flags = BasicSymbolRef::SF_Global;
|
|
if (Sym->isUndefined())
|
|
Flags |= BasicSymbolRef::SF_Undefined;
|
|
else
|
|
Flags |= BasicSymbolRef::SF_Exported;
|
|
|
|
if (Sym->isWeakDefined() || Sym->isWeakReferenced())
|
|
Flags |= BasicSymbolRef::SF_Weak;
|
|
|
|
return Flags;
|
|
}
|
|
|
|
TapiFile::TapiFile(MemoryBufferRef Source, const InterfaceFile &interface,
|
|
Architecture Arch)
|
|
: SymbolicFile(ID_TapiFile, Source), Arch(Arch) {
|
|
for (const auto *Symbol : interface.symbols()) {
|
|
if (!Symbol->getArchitectures().has(Arch))
|
|
continue;
|
|
|
|
switch (Symbol->getKind()) {
|
|
case SymbolKind::GlobalSymbol:
|
|
Symbols.emplace_back(StringRef(), Symbol->getName(), getFlags(Symbol));
|
|
break;
|
|
case SymbolKind::ObjectiveCClass:
|
|
if (interface.getPlatforms().count(PlatformKind::macOS) &&
|
|
Arch == AK_i386) {
|
|
Symbols.emplace_back(ObjC1ClassNamePrefix, Symbol->getName(),
|
|
getFlags(Symbol));
|
|
} else {
|
|
Symbols.emplace_back(ObjC2ClassNamePrefix, Symbol->getName(),
|
|
getFlags(Symbol));
|
|
Symbols.emplace_back(ObjC2MetaClassNamePrefix, Symbol->getName(),
|
|
getFlags(Symbol));
|
|
}
|
|
break;
|
|
case SymbolKind::ObjectiveCClassEHType:
|
|
Symbols.emplace_back(ObjC2EHTypePrefix, Symbol->getName(),
|
|
getFlags(Symbol));
|
|
break;
|
|
case SymbolKind::ObjectiveCInstanceVariable:
|
|
Symbols.emplace_back(ObjC2IVarPrefix, Symbol->getName(),
|
|
getFlags(Symbol));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
TapiFile::~TapiFile() = default;
|
|
|
|
void TapiFile::moveSymbolNext(DataRefImpl &DRI) const { DRI.d.a++; }
|
|
|
|
Error TapiFile::printSymbolName(raw_ostream &OS, DataRefImpl DRI) const {
|
|
assert(DRI.d.a < Symbols.size() && "Attempt to access symbol out of bounds");
|
|
const Symbol &Sym = Symbols[DRI.d.a];
|
|
OS << Sym.Prefix << Sym.Name;
|
|
return Error::success();
|
|
}
|
|
|
|
Expected<uint32_t> TapiFile::getSymbolFlags(DataRefImpl DRI) const {
|
|
assert(DRI.d.a < Symbols.size() && "Attempt to access symbol out of bounds");
|
|
return Symbols[DRI.d.a].Flags;
|
|
}
|
|
|
|
basic_symbol_iterator TapiFile::symbol_begin() const {
|
|
DataRefImpl DRI;
|
|
DRI.d.a = 0;
|
|
return BasicSymbolRef{DRI, this};
|
|
}
|
|
|
|
basic_symbol_iterator TapiFile::symbol_end() const {
|
|
DataRefImpl DRI;
|
|
DRI.d.a = Symbols.size();
|
|
return BasicSymbolRef{DRI, this};
|
|
}
|