[Object] Add tapi files to object
Summary:
The intention for this is to allow reading and printing symbols out from
llvm-nm. Tapi file, and Tapi universal follow a similiar format to
their respective MachO Object format.
The tests are dependent on llvm-nm processing tbd files which is why its in D66160
Reviewers: ributzka, steven_wu, lhames
Reviewed By: ributzka, lhames
Subscribers: mgorny, hiraditya, dexonsmith, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D66159
llvm-svn: 369600
diff --git a/llvm/lib/Object/Binary.cpp b/llvm/lib/Object/Binary.cpp
index 1ceda54..944d2bc 100644
--- a/llvm/lib/Object/Binary.cpp
+++ b/llvm/lib/Object/Binary.cpp
@@ -18,6 +18,7 @@
#include "llvm/Object/MachOUniversal.h"
#include "llvm/Object/Minidump.h"
#include "llvm/Object/ObjectFile.h"
+#include "llvm/Object/TapiUniversal.h"
#include "llvm/Object/WindowsResource.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
@@ -87,8 +88,7 @@
case file_magic::minidump:
return MinidumpFile::create(Buffer);
case file_magic::tapi_file:
- // Placeholder until TAPI is supported for lib/Object
- return errorCodeToError(object_error::invalid_file_type);
+ return TapiUniversal::create(Buffer);
}
llvm_unreachable("Unexpected Binary File Type");
}
diff --git a/llvm/lib/Object/CMakeLists.txt b/llvm/lib/Object/CMakeLists.txt
index e3ed640..59f21e9 100644
--- a/llvm/lib/Object/CMakeLists.txt
+++ b/llvm/lib/Object/CMakeLists.txt
@@ -21,6 +21,8 @@
RelocationResolver.cpp
SymbolicFile.cpp
SymbolSize.cpp
+ TapiFile.cpp
+ TapiUniversal.cpp
WasmObjectFile.cpp
WindowsMachineFlag.cpp
WindowsResource.cpp
diff --git a/llvm/lib/Object/LLVMBuild.txt b/llvm/lib/Object/LLVMBuild.txt
index 605f1fb..dd30496 100644
--- a/llvm/lib/Object/LLVMBuild.txt
+++ b/llvm/lib/Object/LLVMBuild.txt
@@ -18,4 +18,4 @@
type = Library
name = Object
parent = Libraries
-required_libraries = BitReader Core MC BinaryFormat MCParser Support
+required_libraries = BitReader Core MC BinaryFormat MCParser Support TextAPI
diff --git a/llvm/lib/Object/TapiFile.cpp b/llvm/lib/Object/TapiFile.cpp
new file mode 100644
index 0000000..be7d762
--- /dev/null
+++ b/llvm/lib/Object/TapiFile.cpp
@@ -0,0 +1,104 @@
+//===- 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) {
+ for (const auto *Symbol : interface.symbols()) {
+ if (!Symbol->getArchitectures().has(Arch))
+ continue;
+
+ auto PlatformKind = interface.getPlatform();
+ switch (Symbol->getKind()) {
+ case SymbolKind::GlobalSymbol:
+ Symbols.emplace_back(StringRef(), Symbol->getName(), getFlags(Symbol));
+ break;
+ case SymbolKind::ObjectiveCClass:
+ if (PlatformKind == 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 {
+ const auto *Sym = reinterpret_cast<const Symbol *>(DRI.p);
+ DRI.p = reinterpret_cast<uintptr_t>(++Sym);
+}
+
+Error TapiFile::printSymbolName(raw_ostream &OS, DataRefImpl DRI) const {
+ const auto *Sym = reinterpret_cast<const Symbol *>(DRI.p);
+ OS << Sym->Prefix << Sym->Name;
+ return Error::success();
+}
+
+uint32_t TapiFile::getSymbolFlags(DataRefImpl DRI) const {
+ const auto *Sym = reinterpret_cast<const Symbol *>(DRI.p);
+ return Sym->Flags;
+}
+
+basic_symbol_iterator TapiFile::symbol_begin() const {
+ DataRefImpl DRI;
+ DRI.p = reinterpret_cast<uintptr_t>(&*Symbols.begin());
+ return BasicSymbolRef{DRI, this};
+}
+
+basic_symbol_iterator TapiFile::symbol_end() const {
+ DataRefImpl DRI;
+ DRI.p = reinterpret_cast<uintptr_t>(&*Symbols.end());
+ return BasicSymbolRef{DRI, this};
+}
diff --git a/llvm/lib/Object/TapiUniversal.cpp b/llvm/lib/Object/TapiUniversal.cpp
new file mode 100644
index 0000000..b3273e3
--- /dev/null
+++ b/llvm/lib/Object/TapiUniversal.cpp
@@ -0,0 +1,54 @@
+//===- TapiUniversal.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 Dynamic Library Stub format.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Object/TapiUniversal.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Object/Error.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/TextAPI/MachO/TextAPIReader.h"
+
+using namespace llvm;
+using namespace MachO;
+using namespace object;
+
+TapiUniversal::TapiUniversal(MemoryBufferRef Source, Error &Err)
+ : Binary(ID_TapiUniversal, Source) {
+ auto Result = TextAPIReader::get(Source);
+ ErrorAsOutParameter ErrAsOuParam(&Err);
+ if (!Result) {
+ Err = Result.takeError();
+ return;
+ }
+ ParsedFile = std::move(Result.get());
+
+ auto Archs = ParsedFile->getArchitectures();
+ for (auto Arch : Archs)
+ Architectures.emplace_back(Arch);
+}
+
+TapiUniversal::~TapiUniversal() = default;
+
+Expected<std::unique_ptr<TapiFile>>
+TapiUniversal::ObjectForArch::getAsObjectFile() const {
+ return std::unique_ptr<TapiFile>(new TapiFile(Parent->getMemoryBufferRef(),
+ *Parent->ParsedFile.get(),
+ Parent->Architectures[Index]));
+}
+
+Expected<std::unique_ptr<TapiUniversal>>
+TapiUniversal::create(MemoryBufferRef Source) {
+ Error Err = Error::success();
+ std::unique_ptr<TapiUniversal> Ret(new TapiUniversal(Source, Err));
+ if (Err)
+ return std::move(Err);
+ return std::move(Ret);
+}