//===-- Archive.cpp - Generic LLVM archive functions ------------*- C++ -*-===//
-//
+//
// 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.
+//
//===----------------------------------------------------------------------===//
//
// This file contains the implementation of the Archive and ArchiveMember
//===----------------------------------------------------------------------===//
#include "ArchiveInternals.h"
+#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/ModuleProvider.h"
-
+#include "llvm/Module.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/System/Process.h"
+#include <memory>
+#include <cstring>
using namespace llvm;
// getMemberSize - compute the actual physical size of the file member as seen
// If it has a long filename, include the name length
if (hasLongFilename())
- result += path.get().length() + 1;
+ result += path.toString().length() + 1;
// If its now odd lengthed, include the padding byte
- if (result % 2 != 0 )
+ 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()
- : next(0), prev(0), parent(0), path("<invalid>"), flags(0), data(0)
+ArchiveMember::ArchiveMember()
+ : parent(0), path("--invalid--"), flags(0), data(0)
{
- info.user = 1000;
- info.group = 1000;
- info.mode = 0777;
- info.fileSize = 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
+// 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)
- : 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
+// 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;
- // Foreign symbol tables have an empty name
- if (path.get() == ARFILE_SYMTAB_NAME)
- flags |= ForeignSymbolTableFlag;
+ // SVR4 symbol tables have an empty name
+ if (path.toString() == ARFILE_SVR4_SYMTAB_NAME)
+ flags |= SVR4SymbolTableFlag;
else
- flags &= ~ForeignSymbolTableFlag;
+ flags &= ~SVR4SymbolTableFlag;
+
+ // BSD4.4 symbol tables have a special name
+ if (path.toString() == ARFILE_BSD4_SYMTAB_NAME)
+ flags |= BSD4SymbolTableFlag;
+ else
+ flags &= ~BSD4SymbolTableFlag;
// LLVM symbol tables have a very specific name
- if (path.get() == ARFILE_LLVM_SYMTAB_NAME)
+ if (path.toString() == ARFILE_LLVM_SYMTAB_NAME)
flags |= LLVMSymbolTableFlag;
else
flags &= ~LLVMSymbolTableFlag;
// String table name
- if (path.get() == ARFILE_STRTAB_NAME)
+ if (path.toString() == ARFILE_STRTAB_NAME)
flags |= StringTableFlag;
else
flags &= ~StringTableFlag;
// If it has a slash then it has a path
- bool hasSlash = path.get().find('/') != std::string::npos;
+ bool hasSlash = path.toString().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.get().length() > 15)
+ if (hasSlash || path.toString().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
switch (sys::IdentifyFileType(signature,4)) {
- case sys::BytecodeFileType:
- flags |= BytecodeFlag;
- break;
- case sys::CompressedBytecodeFileType:
- flags |= CompressedBytecodeFlag;
- flags &= ~CompressedFlag;
- 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
+// 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)
: 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) {
}
-// Archive destructor - just clean up memory
-Archive::~Archive() {
+bool
+Archive::mapToMemory(std::string* ErrMsg) {
+ mapfile = MemoryBuffer::getFile(archPath.c_str(), ErrMsg);
+ if (mapfile == 0)
+ return true;
+ base = mapfile->getBufferStart();
+ return false;
+}
+
+void Archive::cleanUpMemory() {
// Shutdown the file mapping
- if (mapfile) {
- mapfile->unmap();
- delete mapfile;
+ 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 ModuleProviders 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 ) {
}
}
-// vim: sw=2 ai
+// 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,
+ std::vector<std::string>& symbols,
+ std::string* ErrMsg) {
+ std::auto_ptr<MemoryBuffer> Buffer(
+ MemoryBuffer::getFileOrSTDIN(fName.c_str()));
+ if (!Buffer.get()) {
+ if (ErrMsg) *ErrMsg = "Could not open file '" + fName.toString() + "'";
+ return true;
+ }
+
+ ModuleProvider *MP = getBitcodeModuleProvider(Buffer.get(), ErrMsg);
+ if (!MP)
+ return true;
+
+ // Get the module from the provider
+ Module* M = MP->materializeModule();
+ if (M == 0) {
+ delete MP;
+ return true;
+ }
+
+ // Get the symbols
+ getSymbols(M, symbols);
+
+ // Done with the module.
+ delete MP;
+ return true;
+}
+
+ModuleProvider*
+llvm::GetBitcodeSymbols(const unsigned char *BufPtr, unsigned Length,
+ const std::string& ModuleID,
+ std::vector<std::string>& symbols,
+ std::string* ErrMsg) {
+ // Get the module provider
+ MemoryBuffer *Buffer =MemoryBuffer::getNewMemBuffer(Length, ModuleID.c_str());
+ memcpy((char*)Buffer->getBufferStart(), BufPtr, Length);
+
+ ModuleProvider *MP = getBitcodeModuleProvider(Buffer, ErrMsg);
+ if (!MP)
+ return 0;
+
+ // Get the module from the provider
+ Module* M = MP->materializeModule();
+ if (M == 0) {
+ delete MP;
+ return 0;
+ }
+
+ // Get the symbols
+ getSymbols(M, symbols);
+
+ // Done with the module. Note that ModuleProvider will delete the
+ // Module when it is deleted. Also note that its the caller's responsibility
+ // to delete the ModuleProvider.
+ return MP;
+}
projects / oota-llvm.git / blobdiff