//
// 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.
//
//===----------------------------------------------------------------------===//
//
//===----------------------------------------------------------------------===//
#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 <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.toString().length() + 1;
+ result += path.str().length() + 1;
// If its now odd lengthed, include the padding byte
if (result % 2 != 0 )
// 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)
+ : parent(0), path("--invalid--"), flags(0), data(0)
{
info.user = sys::Process::GetCurrentUserId();
info.group = sys::Process::GetCurrentGroupId();
// 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();
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;
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) {
+ error_code ec;
+ std::auto_ptr<MemoryBuffer> 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<std::string>& symbols,
+ std::string* ErrMsg) {
+ // Get the module.
+ std::auto_ptr<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;
+}
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