//===-- Archive.cpp - Generic LLVM archive functions ------------*- C++ -*-===//
-//
+//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Reid Spencer and is distributed under the
+// 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 contains the implementation of the Archive and ArchiveMember
#include "ArchiveInternals.h"
#include "llvm/ModuleProvider.h"
-
+#include "llvm/Module.h"
+#include "llvm/Bytecode/Reader.h"
+#include "llvm/System/Process.h"
using namespace llvm;
// getMemberSize - compute the actual physical size of the file member as seen
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()
+ : next(0), prev(0), 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)
{
}
-// 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;
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
flags &= ~(BytecodeFlag|CompressedBytecodeFlag);
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, BCDecompressor_t *BCDC)
: archPath(filename), members(), mapfile(0), base(0), symTab(), strtab(),
- symTabSize(0), firstFileOffset(0), modules(), foreignST(0)
+ symTabSize(0), firstFileOffset(0), modules(), foreignST(0),
+ Decompressor(BCDC) {
+}
+
+bool
+Archive::mapToMemory(std::string* ErrMsg)
{
- if (map) {
- mapfile = new sys::MappedFile(filename);
- base = (char*) mapfile->map();
- }
+ mapfile = new sys::MappedFile();
+ if (mapfile->open(archPath, sys::MappedFile::READ_ACCESS, ErrMsg))
+ return true;
+ if (!(base = (char*) mapfile->map(ErrMsg)))
+ return true;
+ return false;
}
-// Archive destructor - just clean up memory
-Archive::~Archive() {
+void Archive::cleanUpMemory() {
// Shutdown the file mapping
if (mapfile) {
mapfile->close();
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->hasInternalLinkage())
+ 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->hasInternalLinkage())
+ if (!FI->getName().empty())
+ symbols.push_back(FI->getName());
+}
+
+// Get just the externally visible defined symbols from the bytecode
+bool llvm::GetBytecodeSymbols(const sys::Path& fName,
+ std::vector<std::string>& symbols,
+ BCDecompressor_t *BCDC,
+ std::string* ErrMsg) {
+ ModuleProvider *MP = getBytecodeModuleProvider(fName.toString(), BCDC,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::GetBytecodeSymbols(const unsigned char*Buffer, unsigned Length,
+ const std::string& ModuleID,
+ std::vector<std::string>& symbols,
+ BCDecompressor_t *BCDC,
+ std::string* ErrMsg) {
+ // Get the module provider
+ ModuleProvider* MP =
+ getBytecodeBufferModuleProvider(Buffer, Length, ModuleID, BCDC, ErrMsg, 0);
+ 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;
+}
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