1 files changed, 0 insertions, 633 deletions
diff --git a/contrib/llvm/lib/Archive/ArchiveReader.cpp b/contrib/llvm/lib/Archive/ArchiveReader.cpp
deleted file mode 100644
index 14713e6..0000000
--- a/contrib/llvm/lib/Archive/ArchiveReader.cpp
+++ /dev/null
@@ -1,633 +0,0 @@
-//===-- ArchiveReader.cpp - Read LLVM archive files -------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Builds up standard unix archive files (.a) containing LLVM bitcode.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Bitcode/Archive.h"
-#include "ArchiveInternals.h"
-#include "llvm/ADT/OwningPtr.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/Bitcode/ReaderWriter.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include <cstdio>
-#include <cstdlib>
-using namespace llvm;
-
-/// Read a variable-bit-rate encoded unsigned integer
-static inline unsigned readInteger(const char*&At, const char*End) {
-  unsigned Shift = 0;
-  unsigned Result = 0;
-
-  do {
-    if (At == End)
-      return Result;
-    Result |= (unsigned)((*At++) & 0x7F) << Shift;
-    Shift += 7;
-  } while (At[-1] & 0x80);
-  return Result;
-}
-
-// Completely parse the Archive's symbol table and populate symTab member var.
-bool
-Archive::parseSymbolTable(const void* data, unsigned size, std::string* error) {
-  const char* At = (const char*) data;
-  const char* End = At + size;
-  while (At < End) {
-    unsigned offset = readInteger(At, End);
-    if (At == End) {
-      if (error)
-        *error = "Ran out of data reading vbr_uint for symtab offset!";
-      return false;
-    }
-    unsigned length = readInteger(At, End);
-    if (At == End) {
-      if (error)
-        *error = "Ran out of data reading vbr_uint for symtab length!";
-      return false;
-    }
-    if (At + length > End) {
-      if (error)
-        *error = "Malformed symbol table: length not consistent with size";
-      return false;
-    }
-    // we don't care if it can't be inserted (duplicate entry)
-    symTab.insert(std::make_pair(std::string(At, length), offset));
-    At += length;
-  }
-  symTabSize = size;
-  return true;
-}
-
-// This member parses an ArchiveMemberHeader that is presumed to be pointed to
-// by At. The At pointer is updated to the byte just after the header, which
-// can be variable in size.
-ArchiveMember*
-Archive::parseMemberHeader(const char*& At, const char* End, std::string* error)
-{
-  if (At + sizeof(ArchiveMemberHeader) >= End) {
-    if (error)
-      *error = "Unexpected end of file";
-    return 0;
-  }
-
-  // Cast archive member header
-  const ArchiveMemberHeader* Hdr = (const ArchiveMemberHeader*)At;
-  At += sizeof(ArchiveMemberHeader);
-
-  int flags = 0;
-  int MemberSize = atoi(Hdr->size);
-  assert(MemberSize >= 0);
-
-  // Check the size of the member for sanity
-  if (At + MemberSize > End) {
-    if (error)
-      *error = "invalid member length in archive file";
-    return 0;
-  }
-
-  // Check the member signature
-  if (!Hdr->checkSignature()) {
-    if (error)
-      *error = "invalid file member signature";
-    return 0;
-  }
-
-  // Convert and check the member name
-  // The empty name ( '/' and 15 blanks) is for a foreign (non-LLVM) symbol
-  // table. The special name "//" and 14 blanks is for a string table, used
-  // for long file names. This library doesn't generate either of those but
-  // it will accept them. If the name starts with #1/ and the remainder is
-  // digits, then those digits specify the length of the name that is
-  // stored immediately following the header. The special name
-  // __LLVM_SYM_TAB__ identifies the symbol table for LLVM bitcode.
-  // Anything else is a regular, short filename that is terminated with
-  // a '/' and blanks.
-
-  std::string pathname;
-  switch (Hdr->name[0]) {
-    case '#':
-      if (Hdr->name[1] == '1' && Hdr->name[2] == '/') {
-        if (isdigit(Hdr->name[3])) {
-          unsigned len = atoi(&Hdr->name[3]);
-          const char *nulp = (const char *)memchr(At, '\0', len);
-          pathname.assign(At, nulp != 0 ? (uintptr_t)(nulp - At) : len);
-          At += len;
-          MemberSize -= len;
-          flags |= ArchiveMember::HasLongFilenameFlag;
-        } else {
-          if (error)
-            *error = "invalid long filename";
-          return 0;
-        }
-      } else if (Hdr->name[1] == '_' &&
-                 (0 == memcmp(Hdr->name, ARFILE_LLVM_SYMTAB_NAME, 16))) {
-        // The member is using a long file name (>15 chars) format.
-        // This format is standard for 4.4BSD and Mac OSX operating
-        // systems. LLVM uses it similarly. In this format, the
-        // remainder of the name field (after #1/) specifies the
-        // length of the file name which occupy the first bytes of
-        // the member's data. The pathname already has the #1/ stripped.
-        pathname.assign(ARFILE_LLVM_SYMTAB_NAME);
-        flags |= ArchiveMember::LLVMSymbolTableFlag;
-      }
-      break;
-    case '/':
-      if (Hdr->name[1]== '/') {
-        if (0 == memcmp(Hdr->name, ARFILE_STRTAB_NAME, 16)) {
-          pathname.assign(ARFILE_STRTAB_NAME);
-          flags |= ArchiveMember::StringTableFlag;
-        } else {
-          if (error)
-            *error = "invalid string table name";
-          return 0;
-        }
-      } else if (Hdr->name[1] == ' ') {
-        if (0 == memcmp(Hdr->name, ARFILE_SVR4_SYMTAB_NAME, 16)) {
-          pathname.assign(ARFILE_SVR4_SYMTAB_NAME);
-          flags |= ArchiveMember::SVR4SymbolTableFlag;
-        } else {
-          if (error)
-            *error = "invalid SVR4 symbol table name";
-          return 0;
-        }
-      } else if (isdigit(Hdr->name[1])) {
-        unsigned index = atoi(&Hdr->name[1]);
-        if (index < strtab.length()) {
-          const char* namep = strtab.c_str() + index;
-          const char* endp = strtab.c_str() + strtab.length();
-          const char* p = namep;
-          const char* last_p = p;
-          while (p < endp) {
-            if (*p == '\n' && *last_p == '/') {
-              pathname.assign(namep, last_p - namep);
-              flags |= ArchiveMember::HasLongFilenameFlag;
-              break;
-            }
-            last_p = p;
-            p++;
-          }
-          if (p >= endp) {
-            if (error)
-              *error = "missing name terminator in string table";
-            return 0;
-          }
-        } else {
-          if (error)
-            *error = "name index beyond string table";
-          return 0;
-        }
-      }
-      break;
-    case '_':
-      if (Hdr->name[1] == '_' &&
-          (0 == memcmp(Hdr->name, ARFILE_BSD4_SYMTAB_NAME, 16))) {
-        pathname.assign(ARFILE_BSD4_SYMTAB_NAME);
-        flags |= ArchiveMember::BSD4SymbolTableFlag;
-        break;
-      }
-      /* FALL THROUGH */
-
-    default:
-      const char* slash = (const char*) memchr(Hdr->name, '/', 16);
-      if (slash == 0)
-        slash = Hdr->name + 16;
-      pathname.assign(Hdr->name, slash - Hdr->name);
-      break;
-  }
-
-  // Determine if this is a bitcode file
-  switch (sys::IdentifyFileType(At, 4)) {
-    case sys::Bitcode_FileType:
-      flags |= ArchiveMember::BitcodeFlag;
-      break;
-    default:
-      flags &= ~ArchiveMember::BitcodeFlag;
-      break;
-  }
-
-  // Instantiate the ArchiveMember to be filled
-  ArchiveMember* member = new ArchiveMember(this);
-
-  // Fill in fields of the ArchiveMember
-  member->parent = this;
-  member->path.set(pathname);
-  member->info.fileSize = MemberSize;
-  member->info.modTime.fromEpochTime(atoi(Hdr->date));
-  unsigned int mode;
-  sscanf(Hdr->mode, "%o", &mode);
-  member->info.mode = mode;
-  member->info.user = atoi(Hdr->uid);
-  member->info.group = atoi(Hdr->gid);
-  member->flags = flags;
-  member->data = At;
-
-  return member;
-}
-
-bool
-Archive::checkSignature(std::string* error) {
-  // Check the magic string at file's header
-  if (mapfile->getBufferSize() < 8 || memcmp(base, ARFILE_MAGIC, 8)) {
-    if (error)
-      *error = "invalid signature for an archive file";
-    return false;
-  }
-  return true;
-}
-
-// This function loads the entire archive and fully populates its ilist with
-// the members of the archive file. This is typically used in preparation for
-// editing the contents of the archive.
-bool
-Archive::loadArchive(std::string* error) {
-
-  // Set up parsing
-  members.clear();
-  symTab.clear();
-  const char *At = base;
-  const char *End = mapfile->getBufferEnd();
-
-  if (!checkSignature(error))
-    return false;
-
-  At += 8;  // Skip the magic string.
-
-  bool seenSymbolTable = false;
-  bool foundFirstFile = false;
-  while (At < End) {
-    // parse the member header
-    const char* Save = At;
-    ArchiveMember* mbr = parseMemberHeader(At, End, error);
-    if (!mbr)
-      return false;
-
-    // check if this is the foreign symbol table
-    if (mbr->isSVR4SymbolTable() || mbr->isBSD4SymbolTable()) {
-      // We just save this but don't do anything special
-      // with it. It doesn't count as the "first file".
-      if (foreignST) {
-        // What? Multiple foreign symbol tables? Just chuck it
-        // and retain the last one found.
-        delete foreignST;
-      }
-      foreignST = mbr;
-      At += mbr->getSize();
-      if ((intptr_t(At) & 1) == 1)
-        At++;
-    } else if (mbr->isStringTable()) {
-      // Simply suck the entire string table into a string
-      // variable. This will be used to get the names of the
-      // members that use the "/ddd" format for their names
-      // (SVR4 style long names).
-      strtab.assign(At, mbr->getSize());
-      At += mbr->getSize();
-      if ((intptr_t(At) & 1) == 1)
-        At++;
-      delete mbr;
-    } else if (mbr->isLLVMSymbolTable()) {
-      // This is the LLVM symbol table for the archive. If we've seen it
-      // already, its an error. Otherwise, parse the symbol table and move on.
-      if (seenSymbolTable) {
-        if (error)
-          *error = "invalid archive: multiple symbol tables";
-        return false;
-      }
-      if (!parseSymbolTable(mbr->getData(), mbr->getSize(), error))
-        return false;
-      seenSymbolTable = true;
-      At += mbr->getSize();
-      if ((intptr_t(At) & 1) == 1)
-        At++;
-      delete mbr; // We don't need this member in the list of members.
-    } else {
-      // This is just a regular file. If its the first one, save its offset.
-      // Otherwise just push it on the list and move on to the next file.
-      if (!foundFirstFile) {
-        firstFileOffset = Save - base;
-        foundFirstFile = true;
-      }
-      members.push_back(mbr);
-      At += mbr->getSize();
-      if ((intptr_t(At) & 1) == 1)
-        At++;
-    }
-  }
-  return true;
-}
-
-// Open and completely load the archive file.
-Archive*
-Archive::OpenAndLoad(const sys::Path& File, LLVMContext& C,
-                     std::string* ErrorMessage) {
-  OwningPtr<Archive> result ( new Archive(File, C));
-  if (result->mapToMemory(ErrorMessage))
-    return NULL;
-  if (!result->loadArchive(ErrorMessage))
-    return NULL;
-  return result.take();
-}
-
-// Get all the bitcode modules from the archive
-bool
-Archive::getAllModules(std::vector<Module*>& Modules,
-                       std::string* ErrMessage) {
-
-  for (iterator I=begin(), E=end(); I != E; ++I) {
-    if (I->isBitcode()) {
-      std::string FullMemberName = archPath.str() +
-        "(" + I->getPath().str() + ")";
-      MemoryBuffer *Buffer =
-        MemoryBuffer::getMemBufferCopy(StringRef(I->getData(), I->getSize()),
-                                       FullMemberName.c_str());
-      
-      Module *M = ParseBitcodeFile(Buffer, Context, ErrMessage);
-      delete Buffer;
-      if (!M)
-        return true;
-
-      Modules.push_back(M);
-    }
-  }
-  return false;
-}
-
-// Load just the symbol table from the archive file
-bool
-Archive::loadSymbolTable(std::string* ErrorMsg) {
-
-  // Set up parsing
-  members.clear();
-  symTab.clear();
-  const char *At = base;
-  const char *End = mapfile->getBufferEnd();
-
-  // Make sure we're dealing with an archive
-  if (!checkSignature(ErrorMsg))
-    return false;
-
-  At += 8; // Skip signature
-
-  // Parse the first file member header
-  const char* FirstFile = At;
-  ArchiveMember* mbr = parseMemberHeader(At, End, ErrorMsg);
-  if (!mbr)
-    return false;
-
-  if (mbr->isSVR4SymbolTable() || mbr->isBSD4SymbolTable()) {
-    // Skip the foreign symbol table, we don't do anything with it
-    At += mbr->getSize();
-    if ((intptr_t(At) & 1) == 1)
-      At++;
-    delete mbr;
-
-    // Read the next one
-    FirstFile = At;
-    mbr = parseMemberHeader(At, End, ErrorMsg);
-    if (!mbr) {
-      delete mbr;
-      return false;
-    }
-  }
-
-  if (mbr->isStringTable()) {
-    // Process the string table entry
-    strtab.assign((const char*)mbr->getData(), mbr->getSize());
-    At += mbr->getSize();
-    if ((intptr_t(At) & 1) == 1)
-      At++;
-    delete mbr;
-    // Get the next one
-    FirstFile = At;
-    mbr = parseMemberHeader(At, End, ErrorMsg);
-    if (!mbr) {
-      delete mbr;
-      return false;
-    }
-  }
-
-  // See if its the symbol table
-  if (mbr->isLLVMSymbolTable()) {
-    if (!parseSymbolTable(mbr->getData(), mbr->getSize(), ErrorMsg)) {
-      delete mbr;
-      return false;
-    }
-
-    At += mbr->getSize();
-    if ((intptr_t(At) & 1) == 1)
-      At++;
-    delete mbr;
-    // Can't be any more symtab headers so just advance
-    FirstFile = At;
-  } else {
-    // There's no symbol table in the file. We have to rebuild it from scratch
-    // because the intent of this method is to get the symbol table loaded so
-    // it can be searched efficiently.
-    // Add the member to the members list
-    members.push_back(mbr);
-  }
-
-  firstFileOffset = FirstFile - base;
-  return true;
-}
-
-// Open the archive and load just the symbol tables
-Archive* Archive::OpenAndLoadSymbols(const sys::Path& File,
-                                     LLVMContext& C,
-                                     std::string* ErrorMessage) {
-  OwningPtr<Archive> result ( new Archive(File, C) );
-  if (result->mapToMemory(ErrorMessage))
-    return NULL;
-  if (!result->loadSymbolTable(ErrorMessage))
-    return NULL;
-  return result.take();
-}
-
-// Look up one symbol in the symbol table and return the module that defines
-// that symbol.
-Module*
-Archive::findModuleDefiningSymbol(const std::string& symbol, 
-                                  std::string* ErrMsg) {
-  SymTabType::iterator SI = symTab.find(symbol);
-  if (SI == symTab.end())
-    return 0;
-
-  // The symbol table was previously constructed assuming that the members were
-  // written without the symbol table header. Because VBR encoding is used, the
-  // values could not be adjusted to account for the offset of the symbol table
-  // because that could affect the size of the symbol table due to VBR encoding.
-  // We now have to account for this by adjusting the offset by the size of the
-  // symbol table and its header.
-  unsigned fileOffset =
-    SI->second +                // offset in symbol-table-less file
-    firstFileOffset;            // add offset to first "real" file in archive
-
-  // See if the module is already loaded
-  ModuleMap::iterator MI = modules.find(fileOffset);
-  if (MI != modules.end())
-    return MI->second.first;
-
-  // Module hasn't been loaded yet, we need to load it
-  const char* modptr = base + fileOffset;
-  ArchiveMember* mbr = parseMemberHeader(modptr, mapfile->getBufferEnd(),
-                                         ErrMsg);
-  if (!mbr)
-    return 0;
-
-  // Now, load the bitcode module to get the Module.
-  std::string FullMemberName = archPath.str() + "(" +
-    mbr->getPath().str() + ")";
-  MemoryBuffer *Buffer =
-    MemoryBuffer::getMemBufferCopy(StringRef(mbr->getData(), mbr->getSize()),
-                                   FullMemberName.c_str());
-  
-  Module *m = getLazyBitcodeModule(Buffer, Context, ErrMsg);
-  if (!m)
-    return 0;
-
-  modules.insert(std::make_pair(fileOffset, std::make_pair(m, mbr)));
-
-  return m;
-}
-
-// Look up multiple symbols in the symbol table and return a set of
-// Modules that define those symbols.
-bool
-Archive::findModulesDefiningSymbols(std::set<std::string>& symbols,
-                                    SmallVectorImpl<Module*>& result,
-                                    std::string* error) {
-  if (!mapfile || !base) {
-    if (error)
-      *error = "Empty archive invalid for finding modules defining symbols";
-    return false;
-  }
-
-  if (symTab.empty()) {
-    // We don't have a symbol table, so we must build it now but lets also
-    // make sure that we populate the modules table as we do this to ensure
-    // that we don't load them twice when findModuleDefiningSymbol is called
-    // below.
-
-    // Get a pointer to the first file
-    const char* At  = base + firstFileOffset;
-    const char* End = mapfile->getBufferEnd();
-
-    while ( At < End) {
-      // Compute the offset to be put in the symbol table
-      unsigned offset = At - base - firstFileOffset;
-
-      // Parse the file's header
-      ArchiveMember* mbr = parseMemberHeader(At, End, error);
-      if (!mbr)
-        return false;
-
-      // If it contains symbols
-      if (mbr->isBitcode()) {
-        // Get the symbols
-        std::vector<std::string> symbols;
-        std::string FullMemberName = archPath.str() + "(" +
-          mbr->getPath().str() + ")";
-        Module* M = 
-          GetBitcodeSymbols(At, mbr->getSize(), FullMemberName, Context,
-                            symbols, error);
-
-        if (M) {
-          // Insert the module's symbols into the symbol table
-          for (std::vector<std::string>::iterator I = symbols.begin(),
-               E=symbols.end(); I != E; ++I ) {
-            symTab.insert(std::make_pair(*I, offset));
-          }
-          // Insert the Module and the ArchiveMember into the table of
-          // modules.
-          modules.insert(std::make_pair(offset, std::make_pair(M, mbr)));
-        } else {
-          if (error)
-            *error = "Can't parse bitcode member: " + 
-              mbr->getPath().str() + ": " + *error;
-          delete mbr;
-          return false;
-        }
-      }
-
-      // Go to the next file location
-      At += mbr->getSize();
-      if ((intptr_t(At) & 1) == 1)
-        At++;
-    }
-  }
-
-  // At this point we have a valid symbol table (one way or another) so we
-  // just use it to quickly find the symbols requested.
-
-  SmallPtrSet<Module*, 16> Added;
-  for (std::set<std::string>::iterator I=symbols.begin(),
-         Next = I,
-         E=symbols.end(); I != E; I = Next) {
-    // Increment Next before we invalidate it.
-    ++Next;
-
-    // See if this symbol exists
-    Module* m = findModuleDefiningSymbol(*I,error);
-    if (!m)
-      continue;
-    bool NewMember = Added.insert(m);
-    if (!NewMember)
-      continue;
-
-    // The symbol exists, insert the Module into our result.
-    result.push_back(m);
-
-    // Remove the symbol now that its been resolved.
-    symbols.erase(I);
-  }
-  return true;
-}
-
-bool Archive::isBitcodeArchive() {
-  // Make sure the symTab has been loaded. In most cases this should have been
-  // done when the archive was constructed, but still,  this is just in case.
-  if (symTab.empty())
-    if (!loadSymbolTable(0))
-      return false;
-
-  // Now that we know it's been loaded, return true
-  // if it has a size
-  if (symTab.size()) return true;
-
-  // We still can't be sure it isn't a bitcode archive
-  if (!loadArchive(0))
-    return false;
-
-  std::vector<Module *> Modules;
-  std::string ErrorMessage;
-
-  // Scan the archive, trying to load a bitcode member.  We only load one to
-  // see if this works.
-  for (iterator I = begin(), E = end(); I != E; ++I) {
-    if (!I->isBitcode())
-      continue;
-    
-    std::string FullMemberName = 
-      archPath.str() + "(" + I->getPath().str() + ")";
-
-    MemoryBuffer *Buffer =
-      MemoryBuffer::getMemBufferCopy(StringRef(I->getData(), I->getSize()),
-                                     FullMemberName.c_str());
-    Module *M = ParseBitcodeFile(Buffer, Context);
-    delete Buffer;
-    if (!M)
-      return false;  // Couldn't parse bitcode, not a bitcode archive.
-    delete M;
-    return true;
-  }
-  
-  return false;
-}