path: root/lib/Driver/ToolChains.cpp

//===--- ToolChains.cpp - ToolChain Implementations ---------------------*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "ToolChains.h"

#include "clang/Driver/Arg.h"
#include "clang/Driver/ArgList.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/HostInfo.h"
#include "clang/Driver/OptTable.h"
#include "clang/Driver/Option.h"
#include "clang/Driver/Options.h"

#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Path.h"

#include <cstdlib> // ::getenv

using namespace clang::driver;
using namespace clang::driver::toolchains;

/// Darwin - Darwin tool chain for i386 and x86_64.

Darwin::Darwin(const HostInfo &Host, const llvm::Triple& Triple,
               const unsigned (&_DarwinVersion)[3])
  : ToolChain(Host, Triple), TargetInitialized(false)
{
  llvm::raw_string_ostream(MacosxVersionMin)
    << "10." << std::max(0, (int)_DarwinVersion[0] - 4) << '.'
    << _DarwinVersion[1];
}

// FIXME: Can we tablegen this?
static const char *GetArmArchForMArch(llvm::StringRef Value) {
  if (Value == "armv6k")
    return "armv6";

  if (Value == "armv5tej")
    return "armv5";

  if (Value == "xscale")
    return "xscale";

  if (Value == "armv4t")
    return "armv4t";

  if (Value == "armv7" || Value == "armv7-a" || Value == "armv7-r" ||
      Value == "armv7-m" || Value == "armv7a" || Value == "armv7r" ||
      Value == "armv7m")
    return "armv7";

  return 0;
}

// FIXME: Can we tablegen this?
static const char *GetArmArchForMCpu(llvm::StringRef Value) {
  if (Value == "arm10tdmi" || Value == "arm1020t" || Value == "arm9e" ||
      Value == "arm946e-s" || Value == "arm966e-s" ||
      Value == "arm968e-s" || Value == "arm10e" ||
      Value == "arm1020e" || Value == "arm1022e" || Value == "arm926ej-s" ||
      Value == "arm1026ej-s")
    return "armv5";

  if (Value == "xscale")
    return "xscale";

  if (Value == "arm1136j-s" || Value == "arm1136jf-s" ||
      Value == "arm1176jz-s" || Value == "arm1176jzf-s")
    return "armv6";

  if (Value == "cortex-a8" || Value == "cortex-r4" || Value == "cortex-m3")
    return "armv7";

  return 0;
}

llvm::StringRef Darwin::getDarwinArchName(const ArgList &Args) const {
  switch (getTriple().getArch()) {
  default:
    return getArchName();

  case llvm::Triple::arm: {
    if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
      if (const char *Arch = GetArmArchForMArch(A->getValue(Args)))
        return Arch;

    if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
      if (const char *Arch = GetArmArchForMCpu(A->getValue(Args)))
        return Arch;

    return "arm";
  }
  }
}

DarwinGCC::DarwinGCC(const HostInfo &Host, const llvm::Triple& Triple,
                     const unsigned (&DarwinVersion)[3],
                     const unsigned (&_GCCVersion)[3])
  : Darwin(Host, Triple, DarwinVersion)
{
  GCCVersion[0] = _GCCVersion[0];
  GCCVersion[1] = _GCCVersion[1];
  GCCVersion[2] = _GCCVersion[2];

  // Set up the tool chain paths to match gcc.
  ToolChainDir = "i686-apple-darwin";
  ToolChainDir += llvm::utostr(DarwinVersion[0]);
  ToolChainDir += "/";
  ToolChainDir += llvm::utostr(GCCVersion[0]);
  ToolChainDir += '.';
  ToolChainDir += llvm::utostr(GCCVersion[1]);
  ToolChainDir += '.';
  ToolChainDir += llvm::utostr(GCCVersion[2]);