lib/Support/Triple.cpp

   1 //===--- Triple.cpp - Target triple helper class --------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/ADT/Triple.h"
  11
  12 #include "llvm/ADT/SmallString.h"
  13 #include "llvm/ADT/STLExtras.h"
  14 #include "llvm/ADT/Twine.h"
  15 #include <cassert>
  16 #include <cstring>
  17 using namespace llvm;
  18
  19 //
  20
  21 const char *Triple::getArchTypeName(ArchType Kind) {
  22   switch (Kind) {
  23   case InvalidArch: return "<invalid>";
  24   case UnknownArch: return "unknown";
  25
  26   case alpha:   return "alpha";
  27   case arm:     return "arm";
  28   case bfin:    return "bfin";
  29   case cellspu: return "cellspu";
  30   case mips:    return "mips";
  31   case mipsel:  return "mipsel";
  32   case msp430:  return "msp430";
  33   case ppc64:   return "powerpc64";
  34   case ppc:     return "powerpc";
  35   case sparc:   return "sparc";
  36   case sparcv9: return "sparcv9";
  37   case systemz: return "s390x";
  38   case tce:     return "tce";
  39   case thumb:   return "thumb";
  40   case x86:     return "i386";
  41   case x86_64:  return "x86_64";
  42   case xcore:   return "xcore";
  43   case mblaze:  return "mblaze";
  44   case ptx:     return "ptx";
  45   }
  46
  47   return "<invalid>";
  48 }
  49
  50 const char *Triple::getArchTypePrefix(ArchType Kind) {
  51   switch (Kind) {
  52   default:
  53     return 0;
  54
  55   case alpha:   return "alpha";
  56
  57   case arm:
  58   case thumb:   return "arm";
  59
  60   case bfin:    return "bfin";
  61
  62   case cellspu: return "spu";
  63
  64   case ppc64:
  65   case ppc:     return "ppc";
  66
  67   case mblaze:  return "mblaze";
  68
  69   case sparcv9:
  70   case sparc:   return "sparc";
  71
  72   case x86:
  73   case x86_64:  return "x86";
  74
  75   case xcore:   return "xcore";
  76
  77   case ptx:     return "ptx";
  78   }
  79 }
  80
  81 const char *Triple::getVendorTypeName(VendorType Kind) {
  82   switch (Kind) {
  83   case UnknownVendor: return "unknown";
  84
  85   case Apple: return "apple";
  86   case PC: return "pc";
  87   case SCEI: return "scei";
  88   }
  89
  90   return "<invalid>";
  91 }
  92
  93 const char *Triple::getOSTypeName(OSType Kind) {
  94   switch (Kind) {
  95   case UnknownOS: return "unknown";
  96
  97   case AuroraUX: return "auroraux";
  98   case Cygwin: return "cygwin";
  99   case Darwin: return "darwin";
 100   case DragonFly: return "dragonfly";
 101   case FreeBSD: return "freebsd";
 102   case Linux: return "linux";
 103   case Lv2: return "lv2";
 104   case MinGW32: return "mingw32";
 105   case NetBSD: return "netbsd";
 106   case OpenBSD: return "openbsd";
 107   case Psp: return "psp";
 108   case Solaris: return "solaris";
 109   case Win32: return "win32";
 110   case Haiku: return "haiku";
 111   case Minix: return "minix";
 112   }
 113
 114   return "<invalid>";
 115 }
 116
 117 const char *Triple::getEnvironmentTypeName(EnvironmentType Kind) {
 118   switch (Kind) {
 119   case UnknownEnvironment: return "unknown";
 120   case GNU: return "gnu";
 121   case GNUEABI: return "gnueabi";
 122   case EABI: return "eabi";
 123   case MachO: return "macho";
 124   }
 125
 126   return "<invalid>";
 127 }
 128
 129 Triple::ArchType Triple::getArchTypeForLLVMName(StringRef Name) {
 130   if (Name == "alpha")
 131     return alpha;
 132   if (Name == "arm")
 133     return arm;
 134   if (Name == "bfin")
 135     return bfin;
 136   if (Name == "cellspu")
 137     return cellspu;
 138   if (Name == "mips")
 139     return mips;
 140   if (Name == "mipsel")
 141     return mipsel;
 142   if (Name == "msp430")
 143     return msp430;
 144   if (Name == "ppc64")
 145     return ppc64;
 146   if (Name == "ppc")
 147     return ppc;
 148   if (Name == "mblaze")
 149     return mblaze;
 150   if (Name == "sparc")
 151     return sparc;
 152   if (Name == "sparcv9")
 153     return sparcv9;
 154   if (Name == "systemz")
 155     return systemz;
 156   if (Name == "tce")
 157     return tce;
 158   if (Name == "thumb")
 159     return thumb;
 160   if (Name == "x86")
 161     return x86;
 162   if (Name == "x86-64")
 163     return x86_64;
 164   if (Name == "xcore")
 165     return xcore;
 166   if (Name == "ptx")
 167     return ptx;
 168
 169   return UnknownArch;
 170 }
 171
 172 Triple::ArchType Triple::getArchTypeForDarwinArchName(StringRef Str) {
 173   // See arch(3) and llvm-gcc's driver-driver.c. We don't implement support for
 174   // archs which Darwin doesn't use.
 175
 176   // The matching this routine does is fairly pointless, since it is neither the
 177   // complete architecture list, nor a reasonable subset. The problem is that
 178   // historically the driver driver accepts this and also ties its -march=
 179   // handling to the architecture name, so we need to be careful before removing
 180   // support for it.
 181
 182   // This code must be kept in sync with Clang's Darwin specific argument
 183   // translation.
 184
 185   if (Str == "ppc" || Str == "ppc601" || Str == "ppc603" || Str == "ppc604" ||
 186       Str == "ppc604e" || Str == "ppc750" || Str == "ppc7400" ||
 187       Str == "ppc7450" || Str == "ppc970")
 188     return Triple::ppc;
 189
 190   if (Str == "ppc64")
 191     return Triple::ppc64;
 192
 193   if (Str == "i386" || Str == "i486" || Str == "i486SX" || Str == "pentium" ||
 194       Str == "i586" || Str == "pentpro" || Str == "i686" || Str == "pentIIm3" ||
 195       Str == "pentIIm5" || Str == "pentium4")
 196     return Triple::x86;
 197
 198   if (Str == "x86_64")
 199     return Triple::x86_64;
 200
 201   // This is derived from the driver driver.
 202   if (Str == "arm" || Str == "armv4t" || Str == "armv5" || Str == "xscale" ||
 203       Str == "armv6" || Str == "armv7")
 204     return Triple::arm;
 205
 206   if (Str == "ptx")
 207     return Triple::ptx;
 208
 209   return Triple::UnknownArch;
 210 }
 211
 212 // Returns architecture name that is understood by the target assembler.
 213 const char *Triple::getArchNameForAssembler() {
 214   if (getOS() != Triple::Darwin && getVendor() != Triple::Apple)
 215     return NULL;
 216
 217   StringRef Str = getArchName();
 218   if (Str == "i386")
 219     return "i386";
 220   if (Str == "x86_64")
 221     return "x86_64";
 222   if (Str == "powerpc")
 223     return "ppc";
 224   if (Str == "powerpc64")
 225     return "ppc64";
 226   if (Str == "mblaze" || Str == "microblaze")
 227     return "mblaze";
 228   if (Str == "arm")
 229     return "arm";
 230   if (Str == "armv4t" || Str == "thumbv4t")
 231     return "armv4t";
 232   if (Str == "armv5" || Str == "armv5e" || Str == "thumbv5"
 233       || Str == "thumbv5e")
 234     return "armv5";
 235   if (Str == "armv6" || Str == "thumbv6")
 236     return "armv6";
 237   if (Str == "armv7" || Str == "thumbv7")
 238     return "armv7";
 239   if (Str == "ptx")
 240     return "ptx";
 241   return NULL;
 242 }
 243
 244 //
 245
 246 Triple::ArchType Triple::ParseArch(StringRef ArchName) {
 247   if (ArchName.size() == 4 && ArchName[0] == 'i' &&
 248       ArchName[2] == '8' && ArchName[3] == '6' &&
 249       ArchName[1] - '3' < 6) // i[3-9]86
 250     return x86;
 251   else if (ArchName == "amd64" || ArchName == "x86_64")
 252     return x86_64;
 253   else if (ArchName == "bfin")
 254     return bfin;
 255   else if (ArchName == "powerpc")
 256     return ppc;
 257   else if ((ArchName == "powerpc64") || (ArchName == "ppu"))
 258     return ppc64;
 259   else if (ArchName == "mblaze")
 260     return mblaze;
 261   else if (ArchName == "arm" ||
 262            ArchName.startswith("armv") ||
 263            ArchName == "xscale")
 264     return arm;
 265   else if (ArchName == "thumb" ||
 266            ArchName.startswith("thumbv"))
 267     return thumb;
 268   else if (ArchName.startswith("alpha"))
 269     return alpha;
 270   else if (ArchName == "spu" || ArchName == "cellspu")
 271     return cellspu;
 272   else if (ArchName == "msp430")
 273     return msp430;
 274   else if (ArchName == "mips" || ArchName == "mipsallegrex")
 275     return mips;
 276   else if (ArchName == "mipsel" || ArchName == "mipsallegrexel" ||
 277            ArchName == "psp")
 278     return mipsel;
 279   else if (ArchName == "sparc")
 280     return sparc;
 281   else if (ArchName == "sparcv9")
 282     return sparcv9;
 283   else if (ArchName == "s390x")
 284     return systemz;
 285   else if (ArchName == "tce")
 286     return tce;
 287   else if (ArchName == "xcore")
 288     return xcore;
 289   else if (ArchName == "ptx")
 290     return ptx;
 291   else
 292     return UnknownArch;
 293 }
 294
 295 Triple::VendorType Triple::ParseVendor(StringRef VendorName) {
 296   if (VendorName == "apple")
 297     return Apple;
 298   else if (VendorName == "pc")
 299     return PC;
 300   else if (VendorName == "scei")
 301     return SCEI;
 302   else
 303     return UnknownVendor;
 304 }
 305
 306 Triple::OSType Triple::ParseOS(StringRef OSName) {
 307   if (OSName.startswith("auroraux"))
 308     return AuroraUX;
 309   else if (OSName.startswith("cygwin"))
 310     return Cygwin;
 311   else if (OSName.startswith("darwin"))
 312     return Darwin;
 313   else if (OSName.startswith("dragonfly"))
 314     return DragonFly;
 315   else if (OSName.startswith("freebsd"))
 316     return FreeBSD;
 317   else if (OSName.startswith("linux"))
 318     return Linux;
 319   else if (OSName.startswith("lv2"))
 320     return Lv2;
 321   else if (OSName.startswith("mingw32"))
 322     return MinGW32;
 323   else if (OSName.startswith("netbsd"))
 324     return NetBSD;
 325   else if (OSName.startswith("openbsd"))
 326     return OpenBSD;
 327   else if (OSName.startswith("psp"))
 328     return Psp;
 329   else if (OSName.startswith("solaris"))
 330     return Solaris;
 331   else if (OSName.startswith("win32"))
 332     return Win32;
 333   else if (OSName.startswith("haiku"))
 334     return Haiku;
 335   else if (OSName.startswith("minix"))
 336     return Minix;
 337   else
 338     return UnknownOS;
 339 }
 340
 341 Triple::EnvironmentType Triple::ParseEnvironment(StringRef EnvironmentName) {
 342   if (EnvironmentName.startswith("eabi"))
 343     return EABI;
 344   else if (EnvironmentName.startswith("gnueabi"))
 345     return GNUEABI;
 346   else if (EnvironmentName.startswith("gnu"))
 347     return GNU;
 348   else if (EnvironmentName.startswith("macho"))
 349     return MachO;
 350   else
 351     return UnknownEnvironment;
 352 }
 353
 354 void Triple::Parse() const {
 355   assert(!isInitialized() && "Invalid parse call.");
 356
 357   Arch = ParseArch(getArchName());
 358   Vendor = ParseVendor(getVendorName());
 359   OS = ParseOS(getOSName());
 360   Environment = ParseEnvironment(getEnvironmentName());
 361
 362   assert(isInitialized() && "Failed to initialize!");
 363 }
 364
 365 std::string Triple::normalize(StringRef Str) {
 366   // Parse into components.
 367   SmallVector<StringRef, 4> Components;
 368   for (size_t First = 0, Last = 0; Last != StringRef::npos; First = Last + 1) {
 369     Last = Str.find('-', First);
 370     Components.push_back(Str.slice(First, Last));
 371   }
 372
 373   // If the first component corresponds to a known architecture, preferentially
 374   // use it for the architecture.  If the second component corresponds to a
 375   // known vendor, preferentially use it for the vendor, etc.  This avoids silly
 376   // component movement when a component parses as (eg) both a valid arch and a
 377   // valid os.
 378   ArchType Arch = UnknownArch;
 379   if (Components.size() > 0)
 380     Arch = ParseArch(Components[0]);
 381   VendorType Vendor = UnknownVendor;
 382   if (Components.size() > 1)
 383     Vendor = ParseVendor(Components[1]);
 384   OSType OS = UnknownOS;
 385   if (Components.size() > 2)
 386     OS = ParseOS(Components[2]);
 387   EnvironmentType Environment = UnknownEnvironment;
 388   if (Components.size() > 3)
 389     Environment = ParseEnvironment(Components[3]);
 390
 391   // Note which components are already in their final position.  These will not
 392   // be moved.
 393   bool Found[4];
 394   Found[0] = Arch != UnknownArch;
 395   Found[1] = Vendor != UnknownVendor;
 396   Found[2] = OS != UnknownOS;
 397   Found[3] = Environment != UnknownEnvironment;
 398
 399   // If they are not there already, permute the components into their canonical
 400   // positions by seeing if they parse as a valid architecture, and if so moving
 401   // the component to the architecture position etc.
 402   for (unsigned Pos = 0; Pos != array_lengthof(Found); ++Pos) {
 403     if (Found[Pos])
 404       continue; // Already in the canonical position.
 405
 406     for (unsigned Idx = 0; Idx != Components.size(); ++Idx) {
 407       // Do not reparse any components that already matched.
 408       if (Idx < array_lengthof(Found) && Found[Idx])
 409         continue;
 410
 411       // Does this component parse as valid for the target position?
 412       bool Valid = false;
 413       StringRef Comp = Components[Idx];
 414       switch (Pos) {
 415       default:
 416         assert(false && "unexpected component type!");
 417       case 0:
 418         Arch = ParseArch(Comp);
 419         Valid = Arch != UnknownArch;
 420         break;
 421       case 1:
 422         Vendor = ParseVendor(Comp);
 423         Valid = Vendor != UnknownVendor;
 424         break;
 425       case 2:
 426         OS = ParseOS(Comp);
 427         Valid = OS != UnknownOS;
 428         break;
 429       case 3:
 430         Environment = ParseEnvironment(Comp);
 431         Valid = Environment != UnknownEnvironment;
 432         break;
 433       }
 434       if (!Valid)
 435         continue; // Nope, try the next component.
 436
 437       // Move the component to the target position, pushing any non-fixed
 438       // components that are in the way to the right.  This tends to give
 439       // good results in the common cases of a forgotten vendor component
 440       // or a wrongly positioned environment.
 441       if (Pos < Idx) {
 442         // Insert left, pushing the existing components to the right.  For
 443         // example, a-b-i386 -> i386-a-b when moving i386 to the front.
 444         StringRef CurrentComponent(""); // The empty component.
 445         // Replace the component we are moving with an empty component.
 446         std::swap(CurrentComponent, Components[Idx]);
 447         // Insert the component being moved at Pos, displacing any existing
 448         // components to the right.
 449         for (unsigned i = Pos; !CurrentComponent.empty(); ++i) {
 450           // Skip over any fixed components.
 451           while (i < array_lengthof(Found) && Found[i]) ++i;
 452           // Place the component at the new position, getting the component
 453           // that was at this position - it will be moved right.
 454           std::swap(CurrentComponent, Components[i]);
 455         }
 456       } else if (Pos > Idx) {
 457         // Push right by inserting empty components until the component at Idx
 458         // reaches the target position Pos.  For example, pc-a -> -pc-a when
 459         // moving pc to the second position.
 460         do {
 461           // Insert one empty component at Idx.
 462           StringRef CurrentComponent(""); // The empty component.
 463           for (unsigned i = Idx; i < Components.size();) {
 464             // Place the component at the new position, getting the component
 465             // that was at this position - it will be moved right.
 466             std::swap(CurrentComponent, Components[i]);
 467             // If it was placed on top of an empty component then we are done.
 468             if (CurrentComponent.empty())
 469               break;
 470             // Advance to the next component, skipping any fixed components.
 471             while (++i < array_lengthof(Found) && Found[i])
 472               ;
 473           }
 474           // The last component was pushed off the end - append it.
 475           if (!CurrentComponent.empty())
 476             Components.push_back(CurrentComponent);
 477
 478           // Advance Idx to the component's new position.
 479           while (++Idx < array_lengthof(Found) && Found[Idx]) {}
 480         } while (Idx < Pos); // Add more until the final position is reached.
 481       }
 482       assert(Pos < Components.size() && Components[Pos] == Comp &&
 483              "Component moved wrong!");
 484       Found[Pos] = true;
 485       break;
 486     }
 487   }
 488
 489   // Special case logic goes here.  At this point Arch, Vendor and OS have the
 490   // correct values for the computed components.
 491
 492   // Stick the corrected components back together to form the normalized string.
 493   std::string Normalized;
 494   for (unsigned i = 0, e = Components.size(); i != e; ++i) {
 495     if (i) Normalized += '-';
 496     Normalized += Components[i];
 497   }
 498   return Normalized;
 499 }
 500
 501 StringRef Triple::getArchName() const {
 502   return StringRef(Data).split('-').first;           // Isolate first component
 503 }
 504
 505 StringRef Triple::getVendorName() const {
 506   StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
 507   return Tmp.split('-').first;                       // Isolate second component
 508 }
 509
 510 StringRef Triple::getOSName() const {
 511   StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
 512   Tmp = Tmp.split('-').second;                       // Strip second component
 513   return Tmp.split('-').first;                       // Isolate third component
 514 }
 515
 516 StringRef Triple::getEnvironmentName() const {
 517   StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
 518   Tmp = Tmp.split('-').second;                       // Strip second component
 519   return Tmp.split('-').second;                      // Strip third component
 520 }
 521
 522 StringRef Triple::getOSAndEnvironmentName() const {
 523   StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
 524   return Tmp.split('-').second;                      // Strip second component
 525 }
 526
 527 static unsigned EatNumber(StringRef &Str) {
 528   assert(!Str.empty() && Str[0] >= '0' && Str[0] <= '9' && "Not a number");
 529   unsigned Result = Str[0]-'0';
 530
 531   // Eat the digit.
 532   Str = Str.substr(1);
 533
 534   // Handle "darwin11".
 535   if (Result == 1 && !Str.empty() && Str[0] >= '0' && Str[0] <= '9') {
 536     Result = Result*10 + (Str[0] - '0');
 537     // Eat the digit.
 538     Str = Str.substr(1);
 539   }
 540
 541   return Result;
 542 }
 543
 544 /// getDarwinNumber - Parse the 'darwin number' out of the specific target
 545 /// triple.  For example, if we have darwin8.5 return 8,5,0.  If any entry is
 546 /// not defined, return 0's.  This requires that the triple have an OSType of
 547 /// darwin before it is called.
 548 void Triple::getDarwinNumber(unsigned &Maj, unsigned &Min,
 549                              unsigned &Revision) const {
 550   assert(getOS() == Darwin && "Not a darwin target triple!");
 551   StringRef OSName = getOSName();
 552   assert(OSName.startswith("darwin") && "Unknown darwin target triple!");
 553
 554   // Strip off "darwin".
 555   OSName = OSName.substr(6);
 556
 557   Maj = Min = Revision = 0;
 558
 559   if (OSName.empty() || OSName[0] < '0' || OSName[0] > '9')
 560     return;
 561
 562   // The major version is the first digit.
 563   Maj = EatNumber(OSName);
 564   if (OSName.empty()) return;
 565
 566   // Handle minor version: 10.4.9 -> darwin8.9.
 567   if (OSName[0] != '.')
 568     return;
 569
 570   // Eat the '.'.
 571   OSName = OSName.substr(1);
 572
 573   if (OSName.empty() || OSName[0] < '0' || OSName[0] > '9')
 574     return;
 575
 576   Min = EatNumber(OSName);
 577   if (OSName.empty()) return;
 578
 579   // Handle revision darwin8.9.1
 580   if (OSName[0] != '.')
 581     return;
 582
 583   // Eat the '.'.
 584   OSName = OSName.substr(1);
 585
 586   if (OSName.empty() || OSName[0] < '0' || OSName[0] > '9')
 587     return;
 588
 589   Revision = EatNumber(OSName);
 590 }
 591
 592 void Triple::setTriple(const Twine &Str) {
 593   Data = Str.str();
 594   Arch = InvalidArch;
 595 }
 596
 597 void Triple::setArch(ArchType Kind) {
 598   setArchName(getArchTypeName(Kind));
 599 }
 600
 601 void Triple::setVendor(VendorType Kind) {
 602   setVendorName(getVendorTypeName(Kind));
 603 }
 604
 605 void Triple::setOS(OSType Kind) {
 606   setOSName(getOSTypeName(Kind));
 607 }
 608
 609 void Triple::setEnvironment(EnvironmentType Kind) {
 610   setEnvironmentName(getEnvironmentTypeName(Kind));
 611 }
 612
 613 void Triple::setArchName(StringRef Str) {
 614   // Work around a miscompilation bug for Twines in gcc 4.0.3.
 615   SmallString<64> Triple;
 616   Triple += Str;
 617   Triple += "-";
 618   Triple += getVendorName();
 619   Triple += "-";
 620   Triple += getOSAndEnvironmentName();
 621   setTriple(Triple.str());
 622 }
 623
 624 void Triple::setVendorName(StringRef Str) {
 625   setTriple(getArchName() + "-" + Str + "-" + getOSAndEnvironmentName());
 626 }
 627
 628 void Triple::setOSName(StringRef Str) {
 629   if (hasEnvironment())
 630     setTriple(getArchName() + "-" + getVendorName() + "-" + Str +
 631               "-" + getEnvironmentName());
 632   else
 633     setTriple(getArchName() + "-" + getVendorName() + "-" + Str);
 634 }
 635
 636 void Triple::setEnvironmentName(StringRef Str) {
 637   setTriple(getArchName() + "-" + getVendorName() + "-" + getOSName() +
 638             "-" + Str);
 639 }
 640
 641 void Triple::setOSAndEnvironmentName(StringRef Str) {
 642   setTriple(getArchName() + "-" + getVendorName() + "-" + Str);
 643 }