X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FArchive%2FArchive.cpp;h=3ce7fbdc948da90489455bd93a809618a788c656;hb=333fb04506233255f10d8095c9e2de5e5f0fdc6f;hp=6e4d14c6a9315a1db60351eba68866345fd4f7ad;hpb=6ff7240a5c484af6e42e2ba6a6d7e03ddf844922;p=oota-llvm.git diff --git a/lib/Archive/Archive.cpp b/lib/Archive/Archive.cpp index 6e4d14c6a93..3ce7fbdc948 100644 --- a/lib/Archive/Archive.cpp +++ b/lib/Archive/Archive.cpp @@ -2,8 +2,8 @@ // // The LLVM Compiler Infrastructure // -// This file was developed by Reid Spencer and is distributed under the -// University of Illinois Open Source License. See LICENSE.TXT for details. +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // @@ -13,9 +13,13 @@ //===----------------------------------------------------------------------===// #include "ArchiveInternals.h" -#include "llvm/ModuleProvider.h" -#include "llvm/System/Process.h" - +#include "llvm/Bitcode/ReaderWriter.h" +#include "llvm/Module.h" +#include "llvm/Support/MemoryBuffer.h" +#include "llvm/Support/Process.h" +#include "llvm/Support/system_error.h" +#include +#include using namespace llvm; // getMemberSize - compute the actual physical size of the file member as seen @@ -27,7 +31,7 @@ ArchiveMember::getMemberSize() const { // If it has a long filename, include the name length if (hasLongFilename()) - result += path.toString().length() + 1; + result += path.str().length() + 1; // If its now odd lengthed, include the padding byte if (result % 2 != 0 ) @@ -39,7 +43,7 @@ ArchiveMember::getMemberSize() const { // This default constructor is only use by the ilist when it creates its // sentry node. We give it specific static values to make it stand out a bit. ArchiveMember::ArchiveMember() - : next(0), prev(0), parent(0), path(""), flags(0), data(0) + : parent(0), path("--invalid--"), flags(0), data(0) { info.user = sys::Process::GetCurrentUserId(); info.group = sys::Process::GetCurrentGroupId(); @@ -54,101 +58,112 @@ ArchiveMember::ArchiveMember() // This is required because correctly setting the data may depend on other // things in the Archive. ArchiveMember::ArchiveMember(Archive* PAR) - : next(0), prev(0), parent(PAR), path(), flags(0), data(0) + : parent(PAR), path(), flags(0), data(0) { } // This method allows an ArchiveMember to be replaced with the data for a // different file, presumably as an update to the member. It also makes sure // the flags are reset correctly. -void ArchiveMember::replaceWith(const sys::Path& newFile) { - assert(newFile.exists() && "Can't replace with a non-existent file"); +bool ArchiveMember::replaceWith(const sys::Path& newFile, std::string* ErrMsg) { + if (!newFile.exists()) { + if (ErrMsg) + *ErrMsg = "Can not replace an archive member with a non-existent file"; + return true; + } + data = 0; path = newFile; // SVR4 symbol tables have an empty name - if (path.toString() == ARFILE_SVR4_SYMTAB_NAME) + if (path.str() == ARFILE_SVR4_SYMTAB_NAME) flags |= SVR4SymbolTableFlag; else flags &= ~SVR4SymbolTableFlag; // BSD4.4 symbol tables have a special name - if (path.toString() == ARFILE_BSD4_SYMTAB_NAME) + if (path.str() == ARFILE_BSD4_SYMTAB_NAME) flags |= BSD4SymbolTableFlag; else flags &= ~BSD4SymbolTableFlag; // LLVM symbol tables have a very specific name - if (path.toString() == ARFILE_LLVM_SYMTAB_NAME) + if (path.str() == ARFILE_LLVM_SYMTAB_NAME) flags |= LLVMSymbolTableFlag; else flags &= ~LLVMSymbolTableFlag; // String table name - if (path.toString() == ARFILE_STRTAB_NAME) + if (path.str() == ARFILE_STRTAB_NAME) flags |= StringTableFlag; else flags &= ~StringTableFlag; // If it has a slash then it has a path - bool hasSlash = path.toString().find('/') != std::string::npos; + bool hasSlash = path.str().find('/') != std::string::npos; if (hasSlash) flags |= HasPathFlag; else flags &= ~HasPathFlag; // If it has a slash or its over 15 chars then its a long filename format - if (hasSlash || path.toString().length() > 15) + if (hasSlash || path.str().length() > 15) flags |= HasLongFilenameFlag; else flags &= ~HasLongFilenameFlag; // Get the signature and status info - std::string magic; const char* signature = (const char*) data; + std::string magic; if (!signature) { path.getMagicNumber(magic,4); signature = magic.c_str(); - path.getStatusInfo(info); + std::string err; + const sys::FileStatus *FSinfo = path.getFileStatus(false, ErrMsg); + if (FSinfo) + info = *FSinfo; + else + return true; } - // Determine what kind of file it is + // Determine what kind of file it is. switch (sys::IdentifyFileType(signature,4)) { - case sys::BytecodeFileType: - flags |= BytecodeFlag; - break; - case sys::CompressedBytecodeFileType: - flags |= CompressedBytecodeFlag; - flags &= ~CompressedFlag; + case sys::Bitcode_FileType: + flags |= BitcodeFlag; break; default: - flags &= ~(BytecodeFlag|CompressedBytecodeFlag); + flags &= ~BitcodeFlag; break; } + return false; } // Archive constructor - this is the only constructor that gets used for the // Archive class. Everything else (default,copy) is deprecated. This just // initializes and maps the file into memory, if requested. -Archive::Archive(const sys::Path& filename, bool map ) +Archive::Archive(const sys::Path& filename, LLVMContext& C) : archPath(filename), members(), mapfile(0), base(0), symTab(), strtab(), - symTabSize(0), firstFileOffset(0), modules(), foreignST(0) -{ - if (map) { - mapfile = new sys::MappedFile(filename); - base = (char*) mapfile->map(); + symTabSize(0), firstFileOffset(0), modules(), foreignST(0), Context(C) { +} + +bool +Archive::mapToMemory(std::string* ErrMsg) { + error_code ec; + mapfile = MemoryBuffer::getFile(archPath.c_str(), ec); + if (mapfile == 0) { + if (ErrMsg) + *ErrMsg = ec.message(); + return true; } + base = mapfile->getBufferStart(); + return false; } void Archive::cleanUpMemory() { // Shutdown the file mapping - if (mapfile) { - mapfile->close(); - delete mapfile; - - mapfile = 0; - base = 0; - } + delete mapfile; + mapfile = 0; + base = 0; // Forget the entire symbol table symTab.clear(); @@ -162,8 +177,8 @@ void Archive::cleanUpMemory() { foreignST = 0; } - // Delete any ModuleProviders and ArchiveMember's we've allocated as a result - // of symbol table searches. + // Delete any Modules and ArchiveMember's we've allocated as a result of + // symbol table searches. for (ModuleMap::iterator I=modules.begin(), E=modules.end(); I != E; ++I ) { delete I->second.first; delete I->second.second; @@ -175,3 +190,73 @@ Archive::~Archive() { cleanUpMemory(); } + + +static void getSymbols(Module*M, std::vector& symbols) { + // Loop over global variables + for (Module::global_iterator GI = M->global_begin(), GE=M->global_end(); GI != GE; ++GI) + if (!GI->isDeclaration() && !GI->hasLocalLinkage()) + if (!GI->getName().empty()) + symbols.push_back(GI->getName()); + + // Loop over functions + for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; ++FI) + if (!FI->isDeclaration() && !FI->hasLocalLinkage()) + if (!FI->getName().empty()) + symbols.push_back(FI->getName()); + + // Loop over aliases + for (Module::alias_iterator AI = M->alias_begin(), AE = M->alias_end(); + AI != AE; ++AI) { + if (AI->hasName()) + symbols.push_back(AI->getName()); + } +} + +// Get just the externally visible defined symbols from the bitcode +bool llvm::GetBitcodeSymbols(const sys::Path& fName, + LLVMContext& Context, + std::vector& symbols, + std::string* ErrMsg) { + error_code ec; + std::auto_ptr Buffer( + MemoryBuffer::getFileOrSTDIN(fName.c_str(), ec)); + if (!Buffer.get()) { + if (ErrMsg) *ErrMsg = "Could not open file '" + fName.str() + "'" + ": " + + ec.message(); + return true; + } + + Module *M = ParseBitcodeFile(Buffer.get(), Context, ErrMsg); + if (!M) + return true; + + // Get the symbols + getSymbols(M, symbols); + + // Done with the module. + delete M; + return true; +} + +Module* +llvm::GetBitcodeSymbols(const char *BufPtr, unsigned Length, + const std::string& ModuleID, + LLVMContext& Context, + std::vector& symbols, + std::string* ErrMsg) { + // Get the module. + std::auto_ptr Buffer( + MemoryBuffer::getMemBufferCopy(StringRef(BufPtr, Length),ModuleID.c_str())); + + Module *M = ParseBitcodeFile(Buffer.get(), Context, ErrMsg); + if (!M) + return 0; + + // Get the symbols + getSymbols(M, symbols); + + // Done with the module. Note that it's the caller's responsibility to delete + // the Module. + return M; +}