Moved to lib/Bytecode/Archive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17800 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Bytecode/Reader/ArchiveReader.cpp b/lib/Bytecode/Reader/ArchiveReader.cpp
deleted file mode 100644 (file)
index e126483..0000000
--- a/lib/Bytecode/Reader/ArchiveReader.cpp
+++ /dev/null
@@ -1,194 +0,0 @@
-//===- ArchiveReader.cpp - Code to read LLVM bytecode from .a files -------===//
-// 
-//                     The LLVM Compiler Infrastructure
-//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
-//===----------------------------------------------------------------------===//
-//
-// This file implements the ReadArchiveFile interface, which allows a linker to
-// read all of the LLVM bytecode files contained in a .a file.  This file
-// understands the standard system .a file format.  This can only handle the .a
-// variant prevalent on Linux systems so far, but may be extended.  See
-// information in this source file for more information:
-//   http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/bfd/archive.c?cvsroot=src
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Bytecode/Reader.h"
-#include "llvm/Module.h"
-#include "llvm/Support/FileUtilities.h"
-#include <cstdlib>
-#include <iostream>
-using namespace llvm;
-
-namespace {
-  struct ar_hdr {
-    char name[16];
-    char date[12];
-    char uid[6];
-    char gid[6];
-    char mode[8];
-    char size[10];
-    char fmag[2];          // Always equal to '`\n'
-  };
-
-  enum ObjectType {
-    UserObject,            // A user .o/.bc file
-    Unknown,               // Unknown file, just ignore it
-    SVR4LongFilename,      // a "//" section used for long file names
-    ArchiveSymbolTable,    // Symbol table produced by ranlib.
-  };
-}
-
-/// getObjectType - Determine the type of object that this header represents.
-/// This is capable of parsing the variety of special sections used for various
-/// purposes.
-///
-static enum ObjectType getObjectType(ar_hdr *H, std::string MemberName,
-                                     unsigned char *MemberData, unsigned Size) {
-  // Check for sections with special names...
-  if (MemberName == "__.SYMDEF       " || MemberName == "__.SYMDEF SORTED")
-    return ArchiveSymbolTable;
-  else if (MemberName == "//              ")
-    return SVR4LongFilename;
-
-  // Check to see if it looks like an llvm object file...
-  if (Size >= 4 && !memcmp(MemberData, "llvm", 4))
-    return UserObject;
-
-  if (Size >= 4 && !memcmp(MemberData, "llvc", 4))
-    return UserObject;
-
-  return Unknown;
-}
-
-static inline bool Error(std::string *ErrorStr, const char *Message) {
-  if (ErrorStr) *ErrorStr = Message;
-  return true;
-}
-
-static bool ParseSymbolTableSection(unsigned char *Buffer, unsigned Size,
-                                    std::string *S) {
-  // Currently not supported (succeeds without doing anything)
-  return false;
-}
-
-static bool ReadArchiveBuffer(const std::string &ArchiveName,
-                              unsigned char *Buffer, unsigned Length,
-                              std::vector<Module*> &Objects,
-                              std::string *ErrorStr) {
-  if (Length < 8 || memcmp(Buffer, "!<arch>\n", 8))
-    return Error(ErrorStr, "signature incorrect for an archive file!");
-  Buffer += 8;  Length -= 8; // Skip the magic string.
-
-  std::vector<char> LongFilenames;
-
-  while (Length >= sizeof(ar_hdr)) {
-    ar_hdr *Hdr = (ar_hdr*)Buffer;
-    unsigned SizeFromHeader = atoi(Hdr->size);
-    if (SizeFromHeader + sizeof(ar_hdr) > Length)
-      return Error(ErrorStr, "invalid record length in archive file!");
-
-    unsigned char *MemberData = Buffer + sizeof(ar_hdr);
-    unsigned MemberSize = SizeFromHeader;
-    // Get name of archive member.
-    char *startp = Hdr->name;
-    char *endp = (char *) memchr (startp, '/', sizeof(ar_hdr));
-    if (memcmp (Hdr->name, "#1/", 3) == 0) {
-      // 4.4BSD/MacOSX long filenames are abbreviated as "#1/L", where L is an
-      // ASCII-coded decimal number representing the length of the name buffer,
-      // which is prepended to the archive member's contents.
-      unsigned NameLength = atoi (&Hdr->name[3]);
-      startp = (char *) MemberData;
-      endp = startp + NameLength;
-      MemberData += NameLength;
-      MemberSize -= NameLength;
-    } else if (startp == endp && isdigit (Hdr->name[1])) {
-      // SVR4 long filenames are abbreviated as "/I", where I is
-      // an ASCII-coded decimal index into the LongFilenames vector.
-      unsigned NameIndex = atoi (&Hdr->name[1]);
-      assert (LongFilenames.size () > NameIndex
-              && "SVR4-style long filename for archive member not found");
-      startp = &LongFilenames[NameIndex];
-      endp = strchr (startp, '/');
-    } else if (startp == endp && Hdr->name[1] == '/') {
-      // This is for the SVR4 long filename table (there might be other
-      // names starting with // but I don't know about them). Make sure that
-      // getObjectType sees it.
-      endp = &Hdr->name[sizeof (Hdr->name)];
-    }
-    if (!endp) {
-      // 4.4BSD/MacOSX *short* filenames are not guaranteed to have a
-      // terminator. Start at the end of the field and backtrack over spaces.
-      endp = startp + sizeof(Hdr->name);
-      while (endp[-1] == ' ')
-        --endp;
-    }
-    std::string MemberName (startp, endp);
-    std::string FullMemberName = ArchiveName + "(" + MemberName + ")";
-
-    switch (getObjectType(Hdr, MemberName, MemberData, MemberSize)) {
-    case SVR4LongFilename:
-      // If this is a long filename section, read all of the file names into the
-      // LongFilenames vector.
-      LongFilenames.assign (MemberData, MemberData + MemberSize);
-      break;
-    case UserObject: {
-      Module *M = ParseBytecodeBuffer(MemberData, MemberSize,
-                                      FullMemberName, ErrorStr);
-      if (!M) return true;
-      Objects.push_back(M);
-      break;
-    }
-    case ArchiveSymbolTable:
-      if (ParseSymbolTableSection(MemberData, MemberSize, ErrorStr))
-        return true;
-      break;
-    default:
-      std::cerr << "ReadArchiveBuffer: WARNING: Skipping unknown file: "
-                << FullMemberName << "\n";
-      break;   // Just ignore unknown files.
-    }
-
-    // Round SizeFromHeader up to an even number...
-    SizeFromHeader = (SizeFromHeader+1)/2*2;
-    Buffer += sizeof(ar_hdr)+SizeFromHeader;   // Move to the next entry
-    Length -= sizeof(ar_hdr)+SizeFromHeader;
-  }
-
-  return Length != 0;
-}
-
-
-// ReadArchiveFile - Read bytecode files from the specified .a file, returning
-// true on error, or false on success.  This does not support reading files from
-// standard input.
-//
-bool llvm::ReadArchiveFile(const std::string &Filename,
-                           std::vector<Module*> &Objects,std::string *ErrorStr){
-  unsigned Length;
-
-    // mmap in the file all at once...
-  unsigned char *Buffer = 
-     (unsigned char*)ReadFileIntoAddressSpace(Filename, Length);
-  if (Buffer == 0) {
-    if (ErrorStr) *ErrorStr = "Error reading file '" + Filename + "'!";
-    return true;
-  }
-  
-  // Parse the archive files we mmap'ped in
-  bool Result = ReadArchiveBuffer(Filename, Buffer, Length, Objects, ErrorStr);
-  
-  // Unmmap the archive...
-  UnmapFileFromAddressSpace(Buffer, Length);
-
-  if (Result)    // Free any loaded objects
-    while (!Objects.empty()) {
-      delete Objects.back();
-      Objects.pop_back();
-    }
-  
-  return Result;
-}