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author | Rafael Espindola <rafael.espindola@gmail.com> | 2013-06-17 15:47:20 +0000 |
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committer | Rafael Espindola <rafael.espindola@gmail.com> | 2013-06-17 15:47:20 +0000 |
commit | 8496faea07de27b6d3435d02855db4bfebcc2781 (patch) | |
tree | 4345703a348c3b6144793e0b7f9b2a672cadb54f /lib/Archive/Archive.cpp | |
parent | 5cd6db9a514ccb37df20455e543c88df5594eec0 (diff) | |
download | external_llvm-8496faea07de27b6d3435d02855db4bfebcc2781.zip external_llvm-8496faea07de27b6d3435d02855db4bfebcc2781.tar.gz external_llvm-8496faea07de27b6d3435d02855db4bfebcc2781.tar.bz2 |
Move lib/Archive to tools/llvm-ar.
llvm-ar is the only tool that needs to write archive files. Every other tool
should be able to use the lib/Object interface.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184083 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Archive/Archive.cpp')
-rw-r--r-- | lib/Archive/Archive.cpp | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/lib/Archive/Archive.cpp b/lib/Archive/Archive.cpp deleted file mode 100644 index e6d4bae..0000000 --- a/lib/Archive/Archive.cpp +++ /dev/null @@ -1,254 +0,0 @@ -//===-- Archive.cpp - Generic LLVM archive functions ------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file contains the implementation of the Archive and ArchiveMember -// classes that is common to both reading and writing archives.. -// -//===----------------------------------------------------------------------===// - -#include "llvm/Bitcode/Archive.h" -#include "ArchiveInternals.h" -#include "llvm/Bitcode/ReaderWriter.h" -#include "llvm/IR/Module.h" -#include "llvm/Support/FileSystem.h" -#include "llvm/Support/MemoryBuffer.h" -#include "llvm/Support/Process.h" -#include "llvm/Support/system_error.h" -#include <cstring> -#include <memory> -using namespace llvm; - -// getMemberSize - compute the actual physical size of the file member as seen -// on disk. This isn't the size of member's payload. Use getSize() for that. -unsigned -ArchiveMember::getMemberSize() const { - // Basically its the file size plus the header size - unsigned result = info.fileSize + sizeof(ArchiveMemberHeader); - - // If it has a long filename, include the name length - if (hasLongFilename()) - result += path.str().length() + 1; - - // If its now odd lengthed, include the padding byte - if (result % 2 != 0 ) - result++; - - return result; -} - -// 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() - : parent(0), path("--invalid--"), flags(0), data(0) -{ - info.user = sys::Process::GetCurrentUserId(); - info.group = sys::Process::GetCurrentGroupId(); - info.mode = 0777; - info.fileSize = 0; - info.modTime = sys::TimeValue::now(); -} - -// This is the constructor that the Archive class uses when it is building or -// reading an archive. It just defaults a few things and ensures the parent is -// set for the iplist. The Archive class fills in the ArchiveMember's data. -// This is required because correctly setting the data may depend on other -// things in the Archive. -ArchiveMember::ArchiveMember(Archive* PAR) - : 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. -bool ArchiveMember::replaceWith(const sys::Path& newFile, std::string* ErrMsg) { - bool Exists; - if (sys::fs::exists(newFile.str(), Exists) || !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.str() == ARFILE_SVR4_SYMTAB_NAME) - flags |= SVR4SymbolTableFlag; - else - flags &= ~SVR4SymbolTableFlag; - - // BSD4.4 symbol tables have a special name - if (path.str() == ARFILE_BSD4_SYMTAB_NAME) - flags |= BSD4SymbolTableFlag; - else - flags &= ~BSD4SymbolTableFlag; - - // String table 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.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.str().length() > 15) - flags |= HasLongFilenameFlag; - else - flags &= ~HasLongFilenameFlag; - - // Get the signature and status info - const char* signature = (const char*) data; - SmallString<4> magic; - if (!signature) { - sys::fs::get_magic(path.str(), magic.capacity(), magic); - signature = magic.c_str(); - const sys::FileStatus *FSinfo = path.getFileStatus(false, ErrMsg); - if (FSinfo) - info = *FSinfo; - else - return true; - } - - // Determine what kind of file it is. - if (sys::fs::identify_magic(StringRef(signature, 4)) == - sys::fs::file_magic::bitcode) - flags |= BitcodeFlag; - else - flags &= ~BitcodeFlag; - - 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, LLVMContext& C) - : archPath(filename), members(), mapfile(0), base(0), symTab(), strtab(), - symTabSize(0), firstFileOffset(0), modules(), foreignST(0), Context(C) { -} - -bool -Archive::mapToMemory(std::string* ErrMsg) { - OwningPtr<MemoryBuffer> File; - if (error_code ec = MemoryBuffer::getFile(archPath.c_str(), File)) { - if (ErrMsg) - *ErrMsg = ec.message(); - return true; - } - mapfile = File.take(); - base = mapfile->getBufferStart(); - return false; -} - -void Archive::cleanUpMemory() { - // Shutdown the file mapping - delete mapfile; - mapfile = 0; - base = 0; - - // Forget the entire symbol table - symTab.clear(); - symTabSize = 0; - - firstFileOffset = 0; - - // Free the foreign symbol table member - if (foreignST) { - delete foreignST; - foreignST = 0; - } - - // 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; - } -} - -// Archive destructor - just clean up memory -Archive::~Archive() { - cleanUpMemory(); -} - - - -static void getSymbols(Module*M, std::vector<std::string>& 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<std::string>& symbols, - std::string* ErrMsg) { - OwningPtr<MemoryBuffer> Buffer; - if (error_code ec = MemoryBuffer::getFileOrSTDIN(fName.c_str(), Buffer)) { - 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<std::string>& symbols, - std::string* ErrMsg) { - // Get the module. - OwningPtr<MemoryBuffer> 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; -} |