Revert "COFF: migrate def parser from LLD to LLVM"

This reverts commits r303490, r303491, r303493, and r303494.

This caused http://crbug.com/728726. Essentially, exporting stdcall
functions doesn't appear to work after this change. Reduced test case
soon.

llvm-svn: 304561

1 files changed, 0 insertions, 319 deletions

diff --git a/llvm/lib/Object/COFFModuleDefinition.cpp b/llvm/lib/Object/COFFModuleDefinition.cpp
deleted file mode 100644
index 0d69cb6b709..00000000000
--- a/llvm/lib/Object/COFFModuleDefinition.cpp
+++ /dev/null
@@ -1,319 +0,0 @@
-//===--- COFFModuleDefinition.cpp - Simple DEF parser ---------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Windows-specific.
-// A parser for the module-definition file (.def file).
-//
-// The format of module-definition files are described in this document:
-// https://msdn.microsoft.com/en-us/library/28d6s79h.aspx
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Object/COFFModuleDefinition.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/StringSwitch.h"
-#include "llvm/Object/COFF.h"
-#include "llvm/Object/COFFImportFile.h"
-#include "llvm/Object/Error.h"
-#include "llvm/Support/Error.h"
-#include "llvm/Support/raw_ostream.h"
-
-using namespace llvm::COFF;
-using namespace llvm;
-
-namespace llvm {
-namespace object {
-
-enum Kind {
-  Unknown,
-  Eof,
-  Identifier,
-  Comma,
-  Equal,
-  KwBase,
-  KwConstant,
-  KwData,
-  KwExports,
-  KwHeapsize,
-  KwLibrary,
-  KwName,
-  KwNoname,
-  KwPrivate,
-  KwStacksize,
-  KwVersion,
-};
-
-struct Token {
-  explicit Token(Kind T = Unknown, StringRef S = "") : K(T), Value(S) {}
-  Kind K;
-  StringRef Value;
-};
-
-static bool isDecorated(StringRef Sym) {
-  return Sym.startswith("_") || Sym.startswith("@") || Sym.startswith("?");
-}
-
-static Error createError(const Twine &Err) {
-  return make_error<StringError>(StringRef(Err.str()),
-                                 object_error::parse_failed);
-}
-
-class Lexer {
-public:
-  Lexer(StringRef S) : Buf(S) {}
-
-  Token lex() {
-    Buf = Buf.trim();
-    if (Buf.empty())
-      return Token(Eof);
-
-    switch (Buf[0]) {
-    case '\0':
-      return Token(Eof);
-    case ';': {
-      size_t End = Buf.find('\n');
-      Buf = (End == Buf.npos) ? "" : Buf.drop_front(End);
-      return lex();
-    }
-    case '=':
-      Buf = Buf.drop_front();
-      return Token(Equal, "=");
-    case ',':
-      Buf = Buf.drop_front();
-      return Token(Comma, ",");
-    case '"': {
-      StringRef S;
-      std::tie(S, Buf) = Buf.substr(1).split('"');
-      return Token(Identifier, S);
-    }
-    default: {
-      size_t End = Buf.find_first_of("=,\r\n \t\v");
-      StringRef Word = Buf.substr(0, End);
-      Kind K = llvm::StringSwitch<Kind>(Word)
-                   .Case("BASE", KwBase)
-                   .Case("CONSTANT", KwConstant)
-                   .Case("DATA", KwData)
-                   .Case("EXPORTS", KwExports)
-                   .Case("HEAPSIZE", KwHeapsize)
-                   .Case("LIBRARY", KwLibrary)
-                   .Case("NAME", KwName)
-                   .Case("NONAME", KwNoname)
-                   .Case("PRIVATE", KwPrivate)
-                   .Case("STACKSIZE", KwStacksize)
-                   .Case("VERSION", KwVersion)
-                   .Default(Identifier);
-      Buf = (End == Buf.npos) ? "" : Buf.drop_front(End);
-      return Token(K, Word);
-    }
-    }
-  }
-
-private:
-  StringRef Buf;
-};
-
-class Parser {
-public:
-  explicit Parser(StringRef S, MachineTypes M) : Lex(S), Machine(M) {}
-
-  Expected<COFFModuleDefinition> parse() {
-    do {
-      if (Error Err = parseOne())
-        return std::move(Err);
-    } while (Tok.K != Eof);
-    return Info;
-  }
-
-private:
-  void read() {
-    if (Stack.empty()) {
-      Tok = Lex.lex();
-      return;
-    }
-    Tok = Stack.back();
-    Stack.pop_back();
-  }
-
-  Error readAsInt(uint64_t *I) {
-    read();
-    if (Tok.K != Identifier || Tok.Value.getAsInteger(10, *I))
-      return createError("integer expected");
-    return Error::success();
-  }
-
-  Error expect(Kind Expected, StringRef Msg) {
-    read();
-    if (Tok.K != Expected)
-      return createError(Msg);
-    return Error::success();
-  }
-
-  void unget() { Stack.push_back(Tok); }
-
-  Error parseOne() {
-    read();
-    switch (Tok.K) {
-    case Eof:
-      return Error::success();
-    case KwExports:
-      for (;;) {
-        read();
-        if (Tok.K != Identifier) {
-          unget();
-          return Error::success();
-        }
-        if (Error Err = parseExport())
-          return Err;
-      }
-    case KwHeapsize:
-      return parseNumbers(&Info.HeapReserve, &Info.HeapCommit);
-    case KwStacksize:
-      return parseNumbers(&Info.StackReserve, &Info.StackCommit);
-    case KwLibrary:
-    case KwName: {
-      bool IsDll = Tok.K == KwLibrary; // Check before parseName.
-      std::string Name;
-      if (Error Err = parseName(&Name, &Info.ImageBase))
-        return Err;
-      // Append the appropriate file extension if not already present.
-      StringRef Ext = IsDll ? ".dll" : ".exe";
-      if (!StringRef(Name).endswith_lower(Ext))
-        Name += Ext;
-
-      // Set the output file, but don't override /out if it was already passed.
-      if (Info.OutputFile.empty())
-        Info.OutputFile = Name;
-      return Error::success();
-    }
-    case KwVersion:
-      return parseVersion(&Info.MajorImageVersion, &Info.MinorImageVersion);
-    default:
-      return createError("unknown directive: " + Tok.Value);
-    }
-  }
-
-  Error parseExport() {
-    COFFShortExport E;
-    E.Name = Tok.Value;
-    read();
-    if (Tok.K == Equal) {
-      read();
-      if (Tok.K != Identifier)
-        return createError("identifier expected, but got " + Tok.Value);
-      E.ExtName = E.Name;
-      E.Name = Tok.Value;
-    } else {
-      unget();
-    }
-
-    if (Machine == IMAGE_FILE_MACHINE_I386) {
-      if (!isDecorated(E.Name))
-        E.Name = (std::string("_").append(E.Name));
-      if (!E.ExtName.empty() && !isDecorated(E.ExtName))
-        E.ExtName = (std::string("_").append(E.ExtName));
-    }
-
-    for (;;) {
-      read();
-      if (Tok.K == Identifier && Tok.Value[0] == '@') {
-        Tok.Value.drop_front().getAsInteger(10, E.Ordinal);
-        read();
-        if (Tok.K == KwNoname) {
-          E.Noname = true;
-        } else {
-          unget();
-        }
-        continue;
-      }
-      if (Tok.K == KwData) {
-        E.Data = true;
-        continue;
-      }
-      if (Tok.K == KwConstant) {
-        E.Constant = true;
-        continue;
-      }
-      if (Tok.K == KwPrivate) {
-        E.Private = true;
-        continue;
-      }
-      unget();
-      Info.Exports.push_back(E);
-      return Error::success();
-    }
-  }
-
-  // HEAPSIZE/STACKSIZE reserve[,commit]
-  Error parseNumbers(uint64_t *Reserve, uint64_t *Commit) {
-    if (Error Err = readAsInt(Reserve))
-      return Err;
-    read();
-    if (Tok.K != Comma) {
-      unget();
-      Commit = nullptr;
-      return Error::success();
-    }
-    if (Error Err = readAsInt(Commit))
-      return Err;
-    return Error::success();
-  }
-
-  // NAME outputPath [BASE=address]
-  Error parseName(std::string *Out, uint64_t *Baseaddr) {
-    read();
-    if (Tok.K == Identifier) {
-      *Out = Tok.Value;
-    } else {
-      *Out = "";
-      unget();
-      return Error::success();
-    }
-    read();
-    if (Tok.K == KwBase) {
-      if (Error Err = expect(Equal, "'=' expected"))
-        return Err;
-      if (Error Err = readAsInt(Baseaddr))
-        return Err;
-    } else {
-      unget();
-      *Baseaddr = 0;
-    }
-    return Error::success();
-  }
-
-  // VERSION major[.minor]
-  Error parseVersion(uint32_t *Major, uint32_t *Minor) {
-    read();
-    if (Tok.K != Identifier)
-      return createError("identifier expected, but got " + Tok.Value);
-    StringRef V1, V2;
-    std::tie(V1, V2) = Tok.Value.split('.');
-    if (V1.getAsInteger(10, *Major))
-      return createError("integer expected, but got " + Tok.Value);
-    if (V2.empty())
-      *Minor = 0;
-    else if (V2.getAsInteger(10, *Minor))
-      return createError("integer expected, but got " + Tok.Value);
-    return Error::success();
-  }
-
-  Lexer Lex;
-  Token Tok;
-  std::vector<Token> Stack;
-  MachineTypes Machine;
-  COFFModuleDefinition Info;
-};
-
-Expected<COFFModuleDefinition> parseCOFFModuleDefinition(MemoryBufferRef MB,
-                                                         MachineTypes Machine) {
-  return Parser(MB.getBuffer(), Machine).parse();
-}
-
-} // namespace object
-} // namespace llvm