tools/llvm-size/llvm-size.cpp

   1 //===-- llvm-size.cpp - Print the size of each object section ---*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This program is a utility that works like traditional Unix "size",
  10 // that is, it prints out the size of each section, and the total size of all
  11 // sections.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "llvm/ADT/APInt.h"
  16 #include "llvm/Object/Archive.h"
  17 #include "llvm/Object/ELFObjectFile.h"
  18 #include "llvm/Object/MachO.h"
  19 #include "llvm/Object/MachOUniversal.h"
  20 #include "llvm/Object/ObjectFile.h"
  21 #include "llvm/Support/Casting.h"
  22 #include "llvm/Support/CommandLine.h"
  23 #include "llvm/Support/FileSystem.h"
  24 #include "llvm/Support/Format.h"
  25 #include "llvm/Support/InitLLVM.h"
  26 #include "llvm/Support/MemoryBuffer.h"
  27 #include "llvm/Support/WithColor.h"
  28 #include "llvm/Support/raw_ostream.h"
  29 #include <algorithm>
  30 #include <string>
  31 #include <system_error>
  32
  33 using namespace llvm;
  34 using namespace object;
  35
  36 cl::OptionCategory SizeCat("llvm-size Options");
  37
  38 enum OutputFormatTy { berkeley, sysv, darwin };
  39 static cl::opt<OutputFormatTy>
  40     OutputFormat("format", cl::desc("Specify output format"),
  41                  cl::values(clEnumVal(sysv, "System V format"),
  42                             clEnumVal(berkeley, "Berkeley format"),
  43                             clEnumVal(darwin, "Darwin -m format")),
  44                  cl::init(berkeley), cl::cat(SizeCat));
  45
  46 static cl::opt<OutputFormatTy>
  47     OutputFormatShort(cl::desc("Specify output format"),
  48                       cl::values(clEnumValN(sysv, "A", "System V format"),
  49                                  clEnumValN(berkeley, "B", "Berkeley format"),
  50                                  clEnumValN(darwin, "m", "Darwin -m format")),
  51                       cl::init(berkeley), cl::cat(SizeCat));
  52
  53 static bool BerkeleyHeaderPrinted = false;
  54 static bool MoreThanOneFile = false;
  55 static uint64_t TotalObjectText = 0;
  56 static uint64_t TotalObjectData = 0;
  57 static uint64_t TotalObjectBss = 0;
  58 static uint64_t TotalObjectTotal = 0;
  59
  60 cl::opt<bool>
  61     DarwinLongFormat("l",
  62                      cl::desc("When format is darwin, use long format "
  63                               "to include addresses and offsets."),
  64                      cl::cat(SizeCat));
  65
  66 cl::opt<bool>
  67     ELFCommons("common",
  68                cl::desc("Print common symbols in the ELF file.  When using "
  69                         "Berkeley format, this is added to bss."),
  70                cl::init(false), cl::cat(SizeCat));
  71
  72 static cl::list<std::string>
  73     ArchFlags("arch", cl::desc("architecture(s) from a Mach-O file to dump"),
  74               cl::ZeroOrMore, cl::cat(SizeCat));
  75 static bool ArchAll = false;
  76
  77 enum RadixTy { octal = 8, decimal = 10, hexadecimal = 16 };
  78 static cl::opt<RadixTy> Radix(
  79     "radix", cl::desc("Print size in radix"), cl::init(decimal),
  80     cl::values(clEnumValN(octal, "8", "Print size in octal"),
  81                clEnumValN(decimal, "10", "Print size in decimal"),
  82                clEnumValN(hexadecimal, "16", "Print size in hexadecimal")),
  83     cl::cat(SizeCat));
  84
  85 static cl::opt<RadixTy> RadixShort(
  86     cl::desc("Print size in radix:"),
  87     cl::values(clEnumValN(octal, "o", "Print size in octal"),
  88                clEnumValN(decimal, "d", "Print size in decimal"),
  89                clEnumValN(hexadecimal, "x", "Print size in hexadecimal")),
  90     cl::init(decimal), cl::cat(SizeCat));
  91
  92 static cl::opt<bool>
  93     TotalSizes("totals",
  94                cl::desc("Print totals of all objects - Berkeley format only"),
  95                cl::init(false), cl::cat(SizeCat));
  96
  97 static cl::alias TotalSizesShort("t", cl::desc("Short for --totals"),
  98                                  cl::aliasopt(TotalSizes));
  99
 100 static cl::list<std::string>
 101     InputFilenames(cl::Positional, cl::desc("<input files>"), cl::ZeroOrMore);
 102
 103 static cl::extrahelp
 104     HelpResponse("\nPass @FILE as argument to read options from FILE.\n");
 105
 106 static bool HadError = false;
 107
 108 static std::string ToolName;
 109
 110 static void error(const Twine &Message, StringRef File) {
 111   HadError = true;
 112   WithColor::error(errs(), ToolName) << "'" << File << "': " << Message << "\n";
 113 }
 114
 115 // This version of error() prints the archive name and member name, for example:
 116 // "libx.a(foo.o)" after the ToolName before the error message.  It sets
 117 // HadError but returns allowing the code to move on to other archive members.
 118 static void error(llvm::Error E, StringRef FileName, const Archive::Child &C,
 119                   StringRef ArchitectureName = StringRef()) {
 120   HadError = true;
 121   WithColor::error(errs(), ToolName) << "'" << FileName << "'";
 122
 123   Expected<StringRef> NameOrErr = C.getName();
 124   // TODO: if we have a error getting the name then it would be nice to print
 125   // the index of which archive member this is and or its offset in the
 126   // archive instead of "???" as the name.
 127   if (!NameOrErr) {
 128     consumeError(NameOrErr.takeError());
 129     errs() << "(" << "???" << ")";
 130   } else
 131     errs() << "(" << NameOrErr.get() << ")";
 132
 133   if (!ArchitectureName.empty())
 134     errs() << " (for architecture " << ArchitectureName << ") ";
 135
 136   std::string Buf;
 137   raw_string_ostream OS(Buf);
 138   logAllUnhandledErrors(std::move(E), OS);
 139   OS.flush();
 140   errs() << ": " << Buf << "\n";
 141 }
 142
 143 // This version of error() prints the file name and which architecture slice it // is from, for example: "foo.o (for architecture i386)" after the ToolName
 144 // before the error message.  It sets HadError but returns allowing the code to
 145 // move on to other architecture slices.
 146 static void error(llvm::Error E, StringRef FileName,
 147                   StringRef ArchitectureName = StringRef()) {
 148   HadError = true;
 149   WithColor::error(errs(), ToolName) << "'" << FileName << "'";
 150
 151   if (!ArchitectureName.empty())
 152     errs() << " (for architecture " << ArchitectureName << ") ";
 153
 154   std::string Buf;
 155   raw_string_ostream OS(Buf);
 156   logAllUnhandledErrors(std::move(E), OS);
 157   OS.flush();
 158   errs() << ": " << Buf << "\n";
 159 }
 160
 161 /// Get the length of the string that represents @p num in Radix including the
 162 /// leading 0x or 0 for hexadecimal and octal respectively.
 163 static size_t getNumLengthAsString(uint64_t num) {
 164   APInt conv(64, num);
 165   SmallString<32> result;
 166   conv.toString(result, Radix, false, true);
 167   return result.size();
 168 }
 169
 170 /// Return the printing format for the Radix.
 171 static const char *getRadixFmt() {
 172   switch (Radix) {
 173   case octal:
 174     return PRIo64;
 175   case decimal:
 176     return PRIu64;
 177   case hexadecimal:
 178     return PRIx64;
 179   }
 180   return nullptr;
 181 }
 182
 183 /// Remove unneeded ELF sections from calculation
 184 static bool considerForSize(ObjectFile *Obj, SectionRef Section) {
 185   if (!Obj->isELF())
 186     return true;
 187   switch (static_cast<ELFSectionRef>(Section).getType()) {
 188   case ELF::SHT_NULL:
 189   case ELF::SHT_SYMTAB:
 190   case ELF::SHT_STRTAB:
 191   case ELF::SHT_REL:
 192   case ELF::SHT_RELA:
 193     return false;
 194   }
 195   return true;
 196 }
 197
 198 /// Total size of all ELF common symbols
 199 static uint64_t getCommonSize(ObjectFile *Obj) {
 200   uint64_t TotalCommons = 0;
 201   for (auto &Sym : Obj->symbols())
 202     if (Obj->getSymbolFlags(Sym.getRawDataRefImpl()) & SymbolRef::SF_Common)
 203       TotalCommons += Obj->getCommonSymbolSize(Sym.getRawDataRefImpl());
 204   return TotalCommons;
 205 }
 206
 207 /// Print the size of each Mach-O segment and section in @p MachO.
 208 ///
 209 /// This is when used when @c OutputFormat is darwin and produces the same
 210 /// output as darwin's size(1) -m output.
 211 static void printDarwinSectionSizes(MachOObjectFile *MachO) {
 212   std::string fmtbuf;
 213   raw_string_ostream fmt(fmtbuf);
 214   const char *radix_fmt = getRadixFmt();
 215   if (Radix == hexadecimal)
 216     fmt << "0x";
 217   fmt << "%" << radix_fmt;
 218
 219   uint32_t Filetype = MachO->getHeader().filetype;
 220
 221   uint64_t total = 0;
 222   for (const auto &Load : MachO->load_commands()) {
 223     if (Load.C.cmd == MachO::LC_SEGMENT_64) {
 224       MachO::segment_command_64 Seg = MachO->getSegment64LoadCommand(Load);
 225       outs() << "Segment " << Seg.segname << ": "
 226              << format(fmt.str().c_str(), Seg.vmsize);
 227       if (DarwinLongFormat)
 228         outs() << " (vmaddr 0x" << format("%" PRIx64, Seg.vmaddr) << " fileoff "
 229                << Seg.fileoff << ")";
 230       outs() << "\n";
 231       total += Seg.vmsize;
 232       uint64_t sec_total = 0;
 233       for (unsigned J = 0; J < Seg.nsects; ++J) {
 234         MachO::section_64 Sec = MachO->getSection64(Load, J);
 235         if (Filetype == MachO::MH_OBJECT)
 236           outs() << "\tSection (" << format("%.16s", &Sec.segname) << ", "
 237                  << format("%.16s", &Sec.sectname) << "): ";
 238         else
 239           outs() << "\tSection " << format("%.16s", &Sec.sectname) << ": ";
 240         outs() << format(fmt.str().c_str(), Sec.size);
 241         if (DarwinLongFormat)
 242           outs() << " (addr 0x" << format("%" PRIx64, Sec.addr) << " offset "
 243                  << Sec.offset << ")";
 244         outs() << "\n";
 245         sec_total += Sec.size;
 246       }
 247       if (Seg.nsects != 0)
 248         outs() << "\ttotal " << format(fmt.str().c_str(), sec_total) << "\n";
 249     } else if (Load.C.cmd == MachO::LC_SEGMENT) {
 250       MachO::segment_command Seg = MachO->getSegmentLoadCommand(Load);
 251       uint64_t Seg_vmsize = Seg.vmsize;
 252       outs() << "Segment " << Seg.segname << ": "
 253              << format(fmt.str().c_str(), Seg_vmsize);
 254       if (DarwinLongFormat)
 255         outs() << " (vmaddr 0x" << format("%" PRIx32, Seg.vmaddr) << " fileoff "
 256                << Seg.fileoff << ")";
 257       outs() << "\n";
 258       total += Seg.vmsize;
 259       uint64_t sec_total = 0;
 260       for (unsigned J = 0; J < Seg.nsects; ++J) {
 261         MachO::section Sec = MachO->getSection(Load, J);
 262         if (Filetype == MachO::MH_OBJECT)
 263           outs() << "\tSection (" << format("%.16s", &Sec.segname) << ", "
 264                  << format("%.16s", &Sec.sectname) << "): ";
 265         else
 266           outs() << "\tSection " << format("%.16s", &Sec.sectname) << ": ";
 267         uint64_t Sec_size = Sec.size;
 268         outs() << format(fmt.str().c_str(), Sec_size);
 269         if (DarwinLongFormat)
 270           outs() << " (addr 0x" << format("%" PRIx32, Sec.addr) << " offset "
 271                  << Sec.offset << ")";
 272         outs() << "\n";
 273         sec_total += Sec.size;
 274       }
 275       if (Seg.nsects != 0)
 276         outs() << "\ttotal " << format(fmt.str().c_str(), sec_total) << "\n";
 277     }
 278   }
 279   outs() << "total " << format(fmt.str().c_str(), total) << "\n";
 280 }
 281
 282 /// Print the summary sizes of the standard Mach-O segments in @p MachO.
 283 ///
 284 /// This is when used when @c OutputFormat is berkeley with a Mach-O file and
 285 /// produces the same output as darwin's size(1) default output.
 286 static void printDarwinSegmentSizes(MachOObjectFile *MachO) {
 287   uint64_t total_text = 0;
 288   uint64_t total_data = 0;
 289   uint64_t total_objc = 0;
 290   uint64_t total_others = 0;
 291   for (const auto &Load : MachO->load_commands()) {
 292     if (Load.C.cmd == MachO::LC_SEGMENT_64) {
 293       MachO::segment_command_64 Seg = MachO->getSegment64LoadCommand(Load);
 294       if (MachO->getHeader().filetype == MachO::MH_OBJECT) {
 295         for (unsigned J = 0; J < Seg.nsects; ++J) {
 296           MachO::section_64 Sec = MachO->getSection64(Load, J);
 297           StringRef SegmentName = StringRef(Sec.segname);
 298           if (SegmentName == "__TEXT")
 299             total_text += Sec.size;
 300           else if (SegmentName == "__DATA")
 301             total_data += Sec.size;
 302           else if (SegmentName == "__OBJC")
 303             total_objc += Sec.size;
 304           else
 305             total_others += Sec.size;
 306         }
 307       } else {
 308         StringRef SegmentName = StringRef(Seg.segname);
 309         if (SegmentName == "__TEXT")
 310           total_text += Seg.vmsize;
 311         else if (SegmentName == "__DATA")
 312           total_data += Seg.vmsize;
 313         else if (SegmentName == "__OBJC")
 314           total_objc += Seg.vmsize;
 315         else
 316           total_others += Seg.vmsize;
 317       }
 318     } else if (Load.C.cmd == MachO::LC_SEGMENT) {
 319       MachO::segment_command Seg = MachO->getSegmentLoadCommand(Load);
 320       if (MachO->getHeader().filetype == MachO::MH_OBJECT) {
 321         for (unsigned J = 0; J < Seg.nsects; ++J) {
 322           MachO::section Sec = MachO->getSection(Load, J);
 323           StringRef SegmentName = StringRef(Sec.segname);
 324           if (SegmentName == "__TEXT")
 325             total_text += Sec.size;
 326           else if (SegmentName == "__DATA")
 327             total_data += Sec.size;
 328           else if (SegmentName == "__OBJC")
 329             total_objc += Sec.size;
 330           else
 331             total_others += Sec.size;
 332         }
 333       } else {
 334         StringRef SegmentName = StringRef(Seg.segname);
 335         if (SegmentName == "__TEXT")
 336           total_text += Seg.vmsize;
 337         else if (SegmentName == "__DATA")
 338           total_data += Seg.vmsize;
 339         else if (SegmentName == "__OBJC")
 340           total_objc += Seg.vmsize;
 341         else
 342           total_others += Seg.vmsize;
 343       }
 344     }
 345   }
 346   uint64_t total = total_text + total_data + total_objc + total_others;
 347
 348   if (!BerkeleyHeaderPrinted) {
 349     outs() << "__TEXT\t__DATA\t__OBJC\tothers\tdec\thex\n";
 350     BerkeleyHeaderPrinted = true;
 351   }
 352   outs() << total_text << "\t" << total_data << "\t" << total_objc << "\t"
 353          << total_others << "\t" << total << "\t" << format("%" PRIx64, total)
 354          << "\t";
 355 }
 356
 357 /// Print the size of each section in @p Obj.
 358 ///
 359 /// The format used is determined by @c OutputFormat and @c Radix.
 360 static void printObjectSectionSizes(ObjectFile *Obj) {
 361   uint64_t total = 0;
 362   std::string fmtbuf;
 363   raw_string_ostream fmt(fmtbuf);
 364   const char *radix_fmt = getRadixFmt();
 365
 366   // If OutputFormat is darwin and we have a MachOObjectFile print as darwin's
 367   // size(1) -m output, else if OutputFormat is darwin and not a Mach-O object
 368   // let it fall through to OutputFormat berkeley.
 369   MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(Obj);
 370   if (OutputFormat == darwin && MachO)
 371     printDarwinSectionSizes(MachO);
 372   // If we have a MachOObjectFile and the OutputFormat is berkeley print as
 373   // darwin's default berkeley format for Mach-O files.
 374   else if (MachO && OutputFormat == berkeley)
 375     printDarwinSegmentSizes(MachO);
 376   else if (OutputFormat == sysv) {
 377     // Run two passes over all sections. The first gets the lengths needed for
 378     // formatting the output. The second actually does the output.
 379     std::size_t max_name_len = strlen("section");
 380     std::size_t max_size_len = strlen("size");
 381     std::size_t max_addr_len = strlen("addr");
 382     for (const SectionRef &Section : Obj->sections()) {
 383       if (!considerForSize(Obj, Section))
 384         continue;
 385       uint64_t size = Section.getSize();
 386       total += size;
 387
 388       Expected<StringRef> name_or_err = Section.getName();
 389       if (!name_or_err) {
 390         error(name_or_err.takeError(), Obj->getFileName());
 391         return;
 392       }
 393
 394       uint64_t addr = Section.getAddress();
 395       max_name_len = std::max(max_name_len, name_or_err->size());
 396       max_size_len = std::max(max_size_len, getNumLengthAsString(size));
 397       max_addr_len = std::max(max_addr_len, getNumLengthAsString(addr));
 398     }
 399
 400     // Add extra padding.
 401     max_name_len += 2;
 402     max_size_len += 2;
 403     max_addr_len += 2;
 404
 405     // Setup header format.
 406     fmt << "%-" << max_name_len << "s "
 407         << "%" << max_size_len << "s "
 408         << "%" << max_addr_len << "s\n";
 409
 410     // Print header
 411     outs() << format(fmt.str().c_str(), static_cast<const char *>("section"),
 412                      static_cast<const char *>("size"),
 413                      static_cast<const char *>("addr"));
 414     fmtbuf.clear();
 415
 416     // Setup per section format.
 417     fmt << "%-" << max_name_len << "s "
 418         << "%#" << max_size_len << radix_fmt << " "
 419         << "%#" << max_addr_len << radix_fmt << "\n";
 420
 421     // Print each section.
 422     for (const SectionRef &Section : Obj->sections()) {
 423       if (!considerForSize(Obj, Section))
 424         continue;
 425
 426       Expected<StringRef> name_or_err = Section.getName();
 427       if (!name_or_err) {
 428         error(name_or_err.takeError(), Obj->getFileName());
 429         return;
 430       }
 431
 432       uint64_t size = Section.getSize();
 433       uint64_t addr = Section.getAddress();
 434       outs() << format(fmt.str().c_str(), name_or_err->str().c_str(), size, addr);
 435     }
 436
 437     if (ELFCommons) {
 438       uint64_t CommonSize = getCommonSize(Obj);
 439       total += CommonSize;
 440       outs() << format(fmt.str().c_str(), std::string("*COM*").c_str(),
 441                        CommonSize, static_cast<uint64_t>(0));
 442     }
 443
 444     // Print total.
 445     fmtbuf.clear();
 446     fmt << "%-" << max_name_len << "s "
 447         << "%#" << max_size_len << radix_fmt << "\n";
 448     outs() << format(fmt.str().c_str(), static_cast<const char *>("Total"),
 449                      total);
 450   } else {
 451     // The Berkeley format does not display individual section sizes. It
 452     // displays the cumulative size for each section type.
 453     uint64_t total_text = 0;
 454     uint64_t total_data = 0;
 455     uint64_t total_bss = 0;
 456
 457     // Make one pass over the section table to calculate sizes.
 458     for (const SectionRef &Section : Obj->sections()) {
 459       uint64_t size = Section.getSize();
 460       bool isText = Section.isBerkeleyText();
 461       bool isData = Section.isBerkeleyData();
 462       bool isBSS = Section.isBSS();
 463       if (isText)
 464         total_text += size;
 465       else if (isData)
 466         total_data += size;
 467       else if (isBSS)
 468         total_bss += size;
 469     }
 470
 471     if (ELFCommons)
 472       total_bss += getCommonSize(Obj);
 473
 474     total = total_text + total_data + total_bss;
 475
 476     if (TotalSizes) {
 477       TotalObjectText += total_text;
 478       TotalObjectData += total_data;
 479       TotalObjectBss += total_bss;
 480       TotalObjectTotal += total;
 481     }
 482
 483     if (!BerkeleyHeaderPrinted) {
 484       outs() << "   text\t"
 485                 "   data\t"
 486                 "    bss\t"
 487                 "    "
 488              << (Radix == octal ? "oct" : "dec")
 489              << "\t"
 490                 "    hex\t"
 491                 "filename\n";
 492       BerkeleyHeaderPrinted = true;
 493     }
 494
 495     // Print result.
 496     fmt << "%#7" << radix_fmt << "\t"
 497         << "%#7" << radix_fmt << "\t"
 498         << "%#7" << radix_fmt << "\t";
 499     outs() << format(fmt.str().c_str(), total_text, total_data, total_bss);
 500     fmtbuf.clear();
 501     fmt << "%7" << (Radix == octal ? PRIo64 : PRIu64) << "\t"
 502         << "%7" PRIx64 "\t";
 503     outs() << format(fmt.str().c_str(), total, total);
 504   }
 505 }
 506
 507 /// Checks to see if the @p O ObjectFile is a Mach-O file and if it is and there
 508 /// is a list of architecture flags specified then check to make sure this
 509 /// Mach-O file is one of those architectures or all architectures was
 510 /// specificed.  If not then an error is generated and this routine returns
 511 /// false.  Else it returns true.
 512 static bool checkMachOAndArchFlags(ObjectFile *O, StringRef Filename) {
 513   auto *MachO = dyn_cast<MachOObjectFile>(O);
 514
 515   if (!MachO || ArchAll || ArchFlags.empty())
 516     return true;
 517
 518   MachO::mach_header H;
 519   MachO::mach_header_64 H_64;
 520   Triple T;
 521   if (MachO->is64Bit()) {
 522     H_64 = MachO->MachOObjectFile::getHeader64();
 523     T = MachOObjectFile::getArchTriple(H_64.cputype, H_64.cpusubtype);
 524   } else {
 525     H = MachO->MachOObjectFile::getHeader();
 526     T = MachOObjectFile::getArchTriple(H.cputype, H.cpusubtype);
 527   }
 528   if (none_of(ArchFlags, [&](const std::string &Name) {
 529         return Name == T.getArchName();
 530       })) {
 531     error("no architecture specified", Filename);
 532     return false;
 533   }
 534   return true;
 535 }
 536
 537 /// Print the section sizes for @p file. If @p file is an archive, print the
 538 /// section sizes for each archive member.
 539 static void printFileSectionSizes(StringRef file) {
 540
 541   // Attempt to open the binary.
 542   Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(file);
 543   if (!BinaryOrErr) {
 544     error(BinaryOrErr.takeError(), file);
 545     return;
 546   }
 547   Binary &Bin = *BinaryOrErr.get().getBinary();
 548
 549   if (Archive *a = dyn_cast<Archive>(&Bin)) {
 550     // This is an archive. Iterate over each member and display its sizes.
 551     Error Err = Error::success();
 552     for (auto &C : a->children(Err)) {
 553       Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary();
 554       if (!ChildOrErr) {
 555         if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError()))
 556           error(std::move(E), a->getFileName(), C);
 557         continue;
 558       }
 559       if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.get())) {
 560         MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 561         if (!checkMachOAndArchFlags(o, file))
 562           return;
 563         if (OutputFormat == sysv)
 564           outs() << o->getFileName() << "   (ex " << a->getFileName() << "):\n";
 565         else if (MachO && OutputFormat == darwin)
 566           outs() << a->getFileName() << "(" << o->getFileName() << "):\n";
 567         printObjectSectionSizes(o);
 568         if (OutputFormat == berkeley) {
 569           if (MachO)
 570             outs() << a->getFileName() << "(" << o->getFileName() << ")\n";
 571           else
 572             outs() << o->getFileName() << " (ex " << a->getFileName() << ")\n";
 573         }
 574       }
 575     }
 576     if (Err)
 577       error(std::move(Err), a->getFileName());
 578   } else if (MachOUniversalBinary *UB =
 579                  dyn_cast<MachOUniversalBinary>(&Bin)) {
 580     // If we have a list of architecture flags specified dump only those.
 581     if (!ArchAll && !ArchFlags.empty()) {
 582       // Look for a slice in the universal binary that matches each ArchFlag.
 583       bool ArchFound;
 584       for (unsigned i = 0; i < ArchFlags.size(); ++i) {
 585         ArchFound = false;
 586         for (MachOUniversalBinary::object_iterator I = UB->begin_objects(),
 587                                                    E = UB->end_objects();
 588              I != E; ++I) {
 589           if (ArchFlags[i] == I->getArchFlagName()) {
 590             ArchFound = true;
 591             Expected<std::unique_ptr<ObjectFile>> UO = I->getAsObjectFile();
 592             if (UO) {
 593               if (ObjectFile *o = dyn_cast<ObjectFile>(&*UO.get())) {
 594                 MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 595                 if (OutputFormat == sysv)
 596                   outs() << o->getFileName() << "  :\n";
 597                 else if (MachO && OutputFormat == darwin) {
 598                   if (MoreThanOneFile || ArchFlags.size() > 1)
 599                     outs() << o->getFileName() << " (for architecture "
 600                            << I->getArchFlagName() << "): \n";
 601                 }
 602                 printObjectSectionSizes(o);
 603                 if (OutputFormat == berkeley) {
 604                   if (!MachO || MoreThanOneFile || ArchFlags.size() > 1)
 605                     outs() << o->getFileName() << " (for architecture "
 606                            << I->getArchFlagName() << ")";
 607                   outs() << "\n";
 608                 }
 609               }
 610             } else if (auto E = isNotObjectErrorInvalidFileType(
 611                        UO.takeError())) {
 612               error(std::move(E), file, ArchFlags.size() > 1 ?
 613                     StringRef(I->getArchFlagName()) : StringRef());
 614               return;
 615             } else if (Expected<std::unique_ptr<Archive>> AOrErr =
 616                            I->getAsArchive()) {
 617               std::unique_ptr<Archive> &UA = *AOrErr;
 618               // This is an archive. Iterate over each member and display its
 619               // sizes.
 620               Error Err = Error::success();
 621               for (auto &C : UA->children(Err)) {
 622                 Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary();
 623                 if (!ChildOrErr) {
 624                   if (auto E = isNotObjectErrorInvalidFileType(
 625                                     ChildOrErr.takeError()))
 626                     error(std::move(E), UA->getFileName(), C,
 627                           ArchFlags.size() > 1 ?
 628                           StringRef(I->getArchFlagName()) : StringRef());
 629                   continue;
 630                 }
 631                 if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.get())) {
 632                   MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 633                   if (OutputFormat == sysv)
 634                     outs() << o->getFileName() << "   (ex " << UA->getFileName()
 635                            << "):\n";
 636                   else if (MachO && OutputFormat == darwin)
 637                     outs() << UA->getFileName() << "(" << o->getFileName()
 638                            << ")"
 639                            << " (for architecture " << I->getArchFlagName()
 640                            << "):\n";
 641                   printObjectSectionSizes(o);
 642                   if (OutputFormat == berkeley) {
 643                     if (MachO) {
 644                       outs() << UA->getFileName() << "(" << o->getFileName()
 645                              << ")";
 646                       if (ArchFlags.size() > 1)
 647                         outs() << " (for architecture " << I->getArchFlagName()
 648                                << ")";
 649                       outs() << "\n";
 650                     } else
 651                       outs() << o->getFileName() << " (ex " << UA->getFileName()
 652                              << ")\n";
 653                   }
 654                 }
 655               }
 656               if (Err)
 657                 error(std::move(Err), UA->getFileName());
 658             } else {
 659               consumeError(AOrErr.takeError());
 660               error("mach-o universal file for architecture " +
 661                         StringRef(I->getArchFlagName()) +
 662                         " is not a mach-o file or an archive file",
 663                     file);
 664             }
 665           }
 666         }
 667         if (!ArchFound) {
 668           error("file does not contain architecture " + ArchFlags[i], file);
 669           return;
 670         }
 671       }
 672       return;
 673     }
 674     // No architecture flags were specified so if this contains a slice that
 675     // matches the host architecture dump only that.
 676     if (!ArchAll) {
 677       StringRef HostArchName = MachOObjectFile::getHostArch().getArchName();
 678       for (MachOUniversalBinary::object_iterator I = UB->begin_objects(),
 679                                                  E = UB->end_objects();
 680            I != E; ++I) {
 681         if (HostArchName == I->getArchFlagName()) {
 682           Expected<std::unique_ptr<ObjectFile>> UO = I->getAsObjectFile();
 683           if (UO) {
 684             if (ObjectFile *o = dyn_cast<ObjectFile>(&*UO.get())) {
 685               MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 686               if (OutputFormat == sysv)
 687                 outs() << o->getFileName() << "  :\n";
 688               else if (MachO && OutputFormat == darwin) {
 689                 if (MoreThanOneFile)
 690                   outs() << o->getFileName() << " (for architecture "
 691                          << I->getArchFlagName() << "):\n";
 692               }
 693               printObjectSectionSizes(o);
 694               if (OutputFormat == berkeley) {
 695                 if (!MachO || MoreThanOneFile)
 696                   outs() << o->getFileName() << " (for architecture "
 697                          << I->getArchFlagName() << ")";
 698                 outs() << "\n";
 699               }
 700             }
 701           } else if (auto E = isNotObjectErrorInvalidFileType(UO.takeError())) {
 702             error(std::move(E), file);
 703             return;
 704           } else if (Expected<std::unique_ptr<Archive>> AOrErr =
 705                          I->getAsArchive()) {
 706             std::unique_ptr<Archive> &UA = *AOrErr;
 707             // This is an archive. Iterate over each member and display its
 708             // sizes.
 709             Error Err = Error::success();
 710             for (auto &C : UA->children(Err)) {
 711               Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary();
 712               if (!ChildOrErr) {
 713                 if (auto E = isNotObjectErrorInvalidFileType(
 714                                 ChildOrErr.takeError()))
 715                   error(std::move(E), UA->getFileName(), C);
 716                 continue;
 717               }
 718               if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.get())) {
 719                 MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 720                 if (OutputFormat == sysv)
 721                   outs() << o->getFileName() << "   (ex " << UA->getFileName()
 722                          << "):\n";
 723                 else if (MachO && OutputFormat == darwin)
 724                   outs() << UA->getFileName() << "(" << o->getFileName() << ")"
 725                          << " (for architecture " << I->getArchFlagName()
 726                          << "):\n";
 727                 printObjectSectionSizes(o);
 728                 if (OutputFormat == berkeley) {
 729                   if (MachO)
 730                     outs() << UA->getFileName() << "(" << o->getFileName()
 731                            << ")\n";
 732                   else
 733                     outs() << o->getFileName() << " (ex " << UA->getFileName()
 734                            << ")\n";
 735                 }
 736               }
 737             }
 738             if (Err)
 739               error(std::move(Err), UA->getFileName());
 740           } else {
 741             consumeError(AOrErr.takeError());
 742             error("mach-o universal file for architecture " +
 743                       StringRef(I->getArchFlagName()) +
 744                       " is not a mach-o file or an archive file",
 745                   file);
 746           }
 747           return;
 748         }
 749       }
 750     }
 751     // Either all architectures have been specified or none have been specified
 752     // and this does not contain the host architecture so dump all the slices.
 753     bool MoreThanOneArch = UB->getNumberOfObjects() > 1;
 754     for (MachOUniversalBinary::object_iterator I = UB->begin_objects(),
 755                                                E = UB->end_objects();
 756          I != E; ++I) {
 757       Expected<std::unique_ptr<ObjectFile>> UO = I->getAsObjectFile();
 758       if (UO) {
 759         if (ObjectFile *o = dyn_cast<ObjectFile>(&*UO.get())) {
 760           MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 761           if (OutputFormat == sysv)
 762             outs() << o->getFileName() << "  :\n";
 763           else if (MachO && OutputFormat == darwin) {
 764             if (MoreThanOneFile || MoreThanOneArch)
 765               outs() << o->getFileName() << " (for architecture "
 766                      << I->getArchFlagName() << "):";
 767             outs() << "\n";
 768           }
 769           printObjectSectionSizes(o);
 770           if (OutputFormat == berkeley) {
 771             if (!MachO || MoreThanOneFile || MoreThanOneArch)
 772               outs() << o->getFileName() << " (for architecture "
 773                      << I->getArchFlagName() << ")";
 774             outs() << "\n";
 775           }
 776         }
 777       } else if (auto E = isNotObjectErrorInvalidFileType(UO.takeError())) {
 778         error(std::move(E), file, MoreThanOneArch ?
 779               StringRef(I->getArchFlagName()) : StringRef());
 780         return;
 781       } else if (Expected<std::unique_ptr<Archive>> AOrErr =
 782                          I->getAsArchive()) {
 783         std::unique_ptr<Archive> &UA = *AOrErr;
 784         // This is an archive. Iterate over each member and display its sizes.
 785         Error Err = Error::success();
 786         for (auto &C : UA->children(Err)) {
 787           Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary();
 788           if (!ChildOrErr) {
 789             if (auto E = isNotObjectErrorInvalidFileType(
 790                               ChildOrErr.takeError()))
 791               error(std::move(E), UA->getFileName(), C, MoreThanOneArch ?
 792                     StringRef(I->getArchFlagName()) : StringRef());
 793             continue;
 794           }
 795           if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.get())) {
 796             MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 797             if (OutputFormat == sysv)
 798               outs() << o->getFileName() << "   (ex " << UA->getFileName()
 799                      << "):\n";
 800             else if (MachO && OutputFormat == darwin)
 801               outs() << UA->getFileName() << "(" << o->getFileName() << ")"
 802                      << " (for architecture " << I->getArchFlagName() << "):\n";
 803             printObjectSectionSizes(o);
 804             if (OutputFormat == berkeley) {
 805               if (MachO)
 806                 outs() << UA->getFileName() << "(" << o->getFileName() << ")"
 807                        << " (for architecture " << I->getArchFlagName()
 808                        << ")\n";
 809               else
 810                 outs() << o->getFileName() << " (ex " << UA->getFileName()
 811                        << ")\n";
 812             }
 813           }
 814         }
 815         if (Err)
 816           error(std::move(Err), UA->getFileName());
 817       } else {
 818         consumeError(AOrErr.takeError());
 819         error("mach-o universal file for architecture " +
 820                   StringRef(I->getArchFlagName()) +
 821                   " is not a mach-o file or an archive file",
 822               file);
 823       }
 824     }
 825   } else if (ObjectFile *o = dyn_cast<ObjectFile>(&Bin)) {
 826     if (!checkMachOAndArchFlags(o, file))
 827       return;
 828     MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 829     if (OutputFormat == sysv)
 830       outs() << o->getFileName() << "  :\n";
 831     else if (MachO && OutputFormat == darwin && MoreThanOneFile)
 832       outs() << o->getFileName() << ":\n";
 833     printObjectSectionSizes(o);
 834     if (OutputFormat == berkeley) {
 835       if (!MachO || MoreThanOneFile)
 836         outs() << o->getFileName();
 837       outs() << "\n";
 838     }
 839   } else {
 840     error("unsupported file type", file);
 841   }
 842   // System V adds an extra newline at the end of each file.
 843   if (OutputFormat == sysv)
 844     outs() << "\n";
 845 }
 846
 847 static void printBerkeleyTotals() {
 848   std::string fmtbuf;
 849   raw_string_ostream fmt(fmtbuf);
 850   const char *radix_fmt = getRadixFmt();
 851   fmt << "%#7" << radix_fmt << "\t"
 852       << "%#7" << radix_fmt << "\t"
 853       << "%#7" << radix_fmt << "\t";
 854   outs() << format(fmt.str().c_str(), TotalObjectText, TotalObjectData,
 855                    TotalObjectBss);
 856   fmtbuf.clear();
 857   fmt << "%7" << (Radix == octal ? PRIo64 : PRIu64) << "\t"
 858       << "%7" PRIx64 "\t";
 859   outs() << format(fmt.str().c_str(), TotalObjectTotal, TotalObjectTotal)
 860          << "(TOTALS)\n";
 861 }
 862
 863 int main(int argc, char **argv) {
 864   InitLLVM X(argc, argv);
 865   cl::HideUnrelatedOptions(SizeCat);
 866   cl::ParseCommandLineOptions(argc, argv, "llvm object size dumper\n");
 867
 868   ToolName = argv[0];
 869   if (OutputFormatShort.getNumOccurrences())
 870     OutputFormat = static_cast<OutputFormatTy>(OutputFormatShort);
 871   if (RadixShort.getNumOccurrences())
 872     Radix = RadixShort.getValue();
 873
 874   for (StringRef Arch : ArchFlags) {
 875     if (Arch == "all") {
 876       ArchAll = true;
 877     } else {
 878       if (!MachOObjectFile::isValidArch(Arch)) {
 879         outs() << ToolName << ": for the -arch option: Unknown architecture "
 880                << "named '" << Arch << "'";
 881         return 1;
 882       }
 883     }
 884   }
 885
 886   if (InputFilenames.empty())
 887     InputFilenames.push_back("a.out");
 888
 889   MoreThanOneFile = InputFilenames.size() > 1;
 890   llvm::for_each(InputFilenames, printFileSectionSizes);
 891   if (OutputFormat == berkeley && TotalSizes)
 892     printBerkeleyTotals();
 893
 894   if (HadError)
 895     return 1;
 896 }