path: root/lib/Basic/Targets.cpp

//===--- Targets.cpp - Implement -arch option and targets -----------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements construction of a TargetInfo object from a 
// target triple.
//
//===----------------------------------------------------------------------===//

#include "clang/AST/Builtins.h"
#include "clang/AST/TargetBuiltins.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/APFloat.h"
using namespace clang;

//===----------------------------------------------------------------------===//
//  Common code shared among targets.
//===----------------------------------------------------------------------===//

static void Define(std::vector<char> &Buf, const char *Macro,
                   const char *Val = "1") {
  const char *Def = "#define ";
  Buf.insert(Buf.end(), Def, Def+strlen(Def));
  Buf.insert(Buf.end(), Macro, Macro+strlen(Macro));
  Buf.push_back(' ');
  Buf.insert(Buf.end(), Val, Val+strlen(Val));
  Buf.push_back('\n');
}

//===----------------------------------------------------------------------===//
// Defines specific to certain operating systems.
//===----------------------------------------------------------------------===//

static void getSolarisDefines(std::vector<char> &Defs) {
  Define(Defs, "__SUN__");
  Define(Defs, "__SOLARIS__");
}

static void getFreeBSDDefines(std::vector<char> &Defs, bool is64Bit, const char *Triple) {
  // FreeBSD defines; list based off of gcc output

  const char *FreeBSD = strstr(Triple, "-freebsd");
  FreeBSD += strlen("-freebsd");
  char release[] = "X";
  release[0] = FreeBSD[0];
  char version[] = "X00001";
  version[0] = FreeBSD[0];

  Define(Defs, "__FreeBSD__", release);
  Define(Defs, "__FreeBSD_cc_version", version);
  Define(Defs, "__KPRINTF_ATTRIBUTE__");
  Define(Defs, "unix");
  Define(Defs, "bsd");
  if (is64Bit) {
    Define(Defs, "__LP64__");
  }
}

static void getDragonFlyDefines(std::vector<char> &Defs) {
  // DragonFly defines; list based off of gcc output
  Define(Defs, "__DragonFly__");
  Define(Defs, "__DragonFly_cc_version", "100001");
  Define(Defs, "__ELF__");
  Define(Defs, "__KPRINTF_ATTRIBUTE__");
  Define(Defs, "__tune_i386__");
  Define(Defs, "unix");
  Define(Defs, "__unix");
  Define(Defs, "__unix__");
}

static void getLinuxDefines(std::vector<char> &Defs) {
  // Linux defines; list based off of gcc output
  Define(Defs, "__unix__");
  Define(Defs, "__unix");
  Define(Defs, "unix");
  Define(Defs, "__linux__");
  Define(Defs, "__linux");
  Define(Defs, "linux");
  Define(Defs, "__gnu_linux__");
}

static void getDarwinDefines(std::vector<char> &Defs, const char *Triple) {
  Define(Defs, "__APPLE__");
  Define(Defs, "__MACH__");
  
  // Figure out which "darwin number" the target triple is.  "darwin9" -> 10.5.
  const char *Darwin = strstr(Triple, "-darwin");
  if (Darwin) {
    char DarwinStr[] = "1000";
    Darwin += strlen("-darwin");
    if (Darwin[0] >= '0' && Darwin[0] <= '9') {
      unsigned DarwinNo = Darwin[0]-'0';
      ++Darwin;
      
      // Handle "darwin11".
      if (DarwinNo == 1 && Darwin[0] >= '0' && Darwin[0] <= '9') {
        DarwinNo = 10+Darwin[0]-'0';
        ++Darwin;
      }
      
      if (DarwinNo >= 4 && DarwinNo <= 13) { // 10.0-10.9
        // darwin7 -> 1030, darwin8 -> 1040, darwin9 -> 1050, etc.
        DarwinStr[2] = '0' + DarwinNo-4;
      }
      
      // Handle minor version: 10.4.9 -> darwin8.9 -> "1049"
      if (Darwin[0] == '.' && Darwin[1] >= '0' && Darwin[1] <= '9' &&
          Darwin[2] == '\0')
        DarwinStr[3] = Darwin[1];
      
    }
    Define(Defs, "__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__", DarwinStr);
  }
}

//===----------------------------------------------------------------------===//
// Defines specific to certain architectures.
//===----------------------------------------------------------------------===//

/// getPowerPCDefines - Return a set of the PowerPC-specific #defines that are
/// not tied to a specific subtarget.
static void getPowerPCDefines(std::vector<char> &Defs, bool is64Bit) {
  // Target identification.
  Define(Defs, "__ppc__");
  Define(Defs, "_ARCH_PPC");
  Define(Defs,