llvm/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            << "\n\n";
 451   } else {
 452     // The Berkeley format does not display individual section sizes. It
 453     // displays the cumulative size for each section type.
 454     uint64_t total_text = 0;
 455     uint64_t total_data = 0;
 456     uint64_t total_bss = 0;
 457
 458     // Make one pass over the section table to calculate sizes.
 459     for (const SectionRef &Section : Obj->sections()) {
 460       uint64_t size = Section.getSize();
 461       bool isText = Section.isBerkeleyText();
 462       bool isData = Section.isBerkeleyData();
 463       bool isBSS = Section.isBSS();
 464       if (isText)
 465         total_text += size;
 466       else if (isData)
 467         total_data += size;
 468       else if (isBSS)
 469         total_bss += size;
 470     }
 471
 472     if (ELFCommons)
 473       total_bss += getCommonSize(Obj);
 474
 475     total = total_text + total_data + total_bss;
 476
 477     if (TotalSizes) {
 478       TotalObjectText += total_text;
 479       TotalObjectData += total_data;
 480       TotalObjectBss += total_bss;
 481       TotalObjectTotal += total;
 482     }
 483
 484     if (!BerkeleyHeaderPrinted) {
 485       outs() << "   text\t"
 486                 "   data\t"
 487                 "    bss\t"
 488                 "    "
 489              << (Radix == octal ? "oct" : "dec")
 490              << "\t"
 491                 "    hex\t"
 492                 "filename\n";
 493       BerkeleyHeaderPrinted = true;
 494     }
 495
 496     // Print result.
 497     fmt << "%#7" << radix_fmt << "\t"
 498         << "%#7" << radix_fmt << "\t"
 499         << "%#7" << radix_fmt << "\t";
 500     outs() << format(fmt.str().c_str(), total_text, total_data, total_bss);
 501     fmtbuf.clear();
 502     fmt << "%7" << (Radix == octal ? PRIo64 : PRIu64) << "\t"
 503         << "%7" PRIx64 "\t";
 504     outs() << format(fmt.str().c_str(), total, total);
 505   }
 506 }
 507
 508 /// Checks to see if the @p O ObjectFile is a Mach-O file and if it is and there
 509 /// is a list of architecture flags specified then check to make sure this
 510 /// Mach-O file is one of those architectures or all architectures was
 511 /// specificed.  If not then an error is generated and this routine returns
 512 /// false.  Else it returns true.
 513 static bool checkMachOAndArchFlags(ObjectFile *O, StringRef Filename) {
 514   auto *MachO = dyn_cast<MachOObjectFile>(O);
 515
 516   if (!MachO || ArchAll || ArchFlags.empty())
 517     return true;
 518
 519   MachO::mach_header H;
 520   MachO::mach_header_64 H_64;
 521   Triple T;
 522   if (MachO->is64Bit()) {
 523     H_64 = MachO->MachOObjectFile::getHeader64();
 524     T = MachOObjectFile::getArchTriple(H_64.cputype, H_64.cpusubtype);
 525   } else {
 526     H = MachO->MachOObjectFile::getHeader();
 527     T = MachOObjectFile::getArchTriple(H.cputype, H.cpusubtype);
 528   }
 529   if (none_of(ArchFlags, [&](const std::string &Name) {
 530         return Name == T.getArchName();
 531       })) {
 532     error("no architecture specified", Filename);
 533     return false;
 534   }
 535   return true;
 536 }
 537
 538 /// Print the section sizes for @p file. If @p file is an archive, print the
 539 /// section sizes for each archive member.
 540 static void printFileSectionSizes(StringRef file) {
 541
 542   // Attempt to open the binary.
 543   Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(file);
 544   if (!BinaryOrErr) {
 545     error(BinaryOrErr.takeError(), file);
 546     return;
 547   }
 548   Binary &Bin = *BinaryOrErr.get().getBinary();
 549
 550   if (Archive *a = dyn_cast<Archive>(&Bin)) {
 551     // This is an archive. Iterate over each member and display its sizes.
 552     Error Err = Error::success();
 553     for (auto &C : a->children(Err)) {
 554       Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary();
 555       if (!ChildOrErr) {
 556         if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError()))
 557           error(std::move(E), a->getFileName(), C);
 558         continue;
 559       }
 560       if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.get())) {
 561         MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 562         if (!checkMachOAndArchFlags(o, file))
 563           return;
 564         if (OutputFormat == sysv)
 565           outs() << o->getFileName() << "   (ex " << a->getFileName() << "):\n";
 566         else if (MachO && OutputFormat == darwin)
 567           outs() << a->getFileName() << "(" << o->getFileName() << "):\n";
 568         printObjectSectionSizes(o);
 569         if (OutputFormat == berkeley) {
 570           if (MachO)
 571             outs() << a->getFileName() << "(" << o->getFileName() << ")\n";
 572           else
 573             outs() << o->getFileName() << " (ex " << a->getFileName() << ")\n";
 574         }
 575       }
 576     }
 577     if (Err)
 578       error(std::move(Err), a->getFileName());
 579   } else if (MachOUniversalBinary *UB =
 580                  dyn_cast<MachOUniversalBinary>(&Bin)) {
 581     // If we have a list of architecture flags specified dump only those.
 582     if (!ArchAll && !ArchFlags.empty()) {
 583       // Look for a slice in the universal binary that matches each ArchFlag.
 584       bool ArchFound;
 585       for (unsigned i = 0; i < ArchFlags.size(); ++i) {
 586         ArchFound = false;
 587         for (MachOUniversalBinary::object_iterator I = UB->begin_objects(),
 588                                                    E = UB->end_objects();
 589              I != E; ++I) {
 590           if (ArchFlags[i] == I->getArchFlagName()) {
 591             ArchFound = true;
 592             Expected<std::unique_ptr<ObjectFile>> UO = I->getAsObjectFile();
 593             if (UO) {
 594               if (ObjectFile *o = dyn_cast<ObjectFile>(&*UO.get())) {
 595                 MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 596                 if (OutputFormat == sysv)
 597                   outs() << o->getFileName() << "  :\n";
 598                 else if (MachO && OutputFormat == darwin) {
 599                   if (MoreThanOneFile || ArchFlags.size() > 1)
 600                     outs() << o->getFileName() << " (for architecture "
 601                            << I->getArchFlagName() << "): \n";
 602                 }
 603                 printObjectSectionSizes(o);
 604                 if (OutputFormat == berkeley) {
 605                   if (!MachO || MoreThanOneFile || ArchFlags.size() > 1)
 606                     outs() << o->getFileName() << " (for architecture "
 607                            << I->getArchFlagName() << ")";
 608                   outs() << "\n";
 609                 }
 610               }
 611             } else if (auto E = isNotObjectErrorInvalidFileType(
 612                        UO.takeError())) {
 613               error(std::move(E), file, ArchFlags.size() > 1 ?
 614                     StringRef(I->getArchFlagName()) : StringRef());
 615               return;
 616             } else if (Expected<std::unique_ptr<Archive>> AOrErr =
 617                            I->getAsArchive()) {
 618               std::unique_ptr<Archive> &UA = *AOrErr;
 619               // This is an archive. Iterate over each member and display its
 620               // sizes.
 621               Error Err = Error::success();
 622               for (auto &C : UA->children(Err)) {
 623                 Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary();
 624                 if (!ChildOrErr) {
 625                   if (auto E = isNotObjectErrorInvalidFileType(
 626                                     ChildOrErr.takeError()))
 627                     error(std::move(E), UA->getFileName(), C,
 628                           ArchFlags.size() > 1 ?
 629                           StringRef(I->getArchFlagName()) : StringRef());
 630                   continue;
 631                 }
 632                 if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.get())) {
 633                   MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 634                   if (OutputFormat == sysv)
 635                     outs() << o->getFileName() << "   (ex " << UA->getFileName()
 636                            << "):\n";
 637                   else if (MachO && OutputFormat == darwin)
 638                     outs() << UA->getFileName() << "(" << o->getFileName()
 639                            << ")"
 640                            << " (for architecture " << I->getArchFlagName()
 641                            << "):\n";
 642                   printObjectSectionSizes(o);
 643                   if (OutputFormat == berkeley) {
 644                     if (MachO) {
 645                       outs() << UA->getFileName() << "(" << o->getFileName()
 646                              << ")";
 647                       if (ArchFlags.size() > 1)
 648                         outs() << " (for architecture " << I->getArchFlagName()
 649                                << ")";
 650                       outs() << "\n";
 651                     } else
 652                       outs() << o->getFileName() << " (ex " << UA->getFileName()
 653                              << ")\n";
 654                   }
 655                 }
 656               }
 657               if (Err)
 658                 error(std::move(Err), UA->getFileName());
 659             } else {
 660               consumeError(AOrErr.takeError());
 661               error("mach-o universal file for architecture " +
 662                         StringRef(I->getArchFlagName()) +
 663                         " is not a mach-o file or an archive file",
 664                     file);
 665             }
 666           }
 667         }
 668         if (!ArchFound) {
 669           error("file does not contain architecture " + ArchFlags[i], file);
 670           return;
 671         }
 672       }
 673       return;
 674     }
 675     // No architecture flags were specified so if this contains a slice that
 676     // matches the host architecture dump only that.
 677     if (!ArchAll) {
 678       StringRef HostArchName = MachOObjectFile::getHostArch().getArchName();
 679       for (MachOUniversalBinary::object_iterator I = UB->begin_objects(),
 680                                                  E = UB->end_objects();
 681            I != E; ++I) {
 682         if (HostArchName == I->getArchFlagName()) {
 683           Expected<std::unique_ptr<ObjectFile>> UO = I->getAsObjectFile();
 684           if (UO) {
 685             if (ObjectFile *o = dyn_cast<ObjectFile>(&*UO.get())) {
 686               MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 687               if (OutputFormat == sysv)
 688                 outs() << o->getFileName() << "  :\n";
 689               else if (MachO && OutputFormat == darwin) {
 690                 if (MoreThanOneFile)
 691                   outs() << o->getFileName() << " (for architecture "
 692                          << I->getArchFlagName() << "):\n";
 693               }
 694               printObjectSectionSizes(o);
 695               if (OutputFormat == berkeley) {
 696                 if (!MachO || MoreThanOneFile)
 697                   outs() << o->getFileName() << " (for architecture "
 698                          << I->getArchFlagName() << ")";
 699                 outs() << "\n";
 700               }
 701             }
 702           } else if (auto E = isNotObjectErrorInvalidFileType(UO.takeError())) {
 703             error(std::move(E), file);
 704             return;
 705           } else if (Expected<std::unique_ptr<Archive>> AOrErr =
 706                          I->getAsArchive()) {
 707             std::unique_ptr<Archive> &UA = *AOrErr;
 708             // This is an archive. Iterate over each member and display its
 709             // sizes.
 710             Error Err = Error::success();
 711             for (auto &C : UA->children(Err)) {
 712               Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary();
 713               if (!ChildOrErr) {
 714                 if (auto E = isNotObjectErrorInvalidFileType(
 715                                 ChildOrErr.takeError()))
 716                   error(std::move(E), UA->getFileName(), C);
 717                 continue;
 718               }
 719               if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.get())) {
 720                 MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 721                 if (OutputFormat == sysv)
 722                   outs() << o->getFileName() << "   (ex " << UA->getFileName()
 723                          << "):\n";
 724                 else if (MachO && OutputFormat == darwin)
 725                   outs() << UA->getFileName() << "(" << o->getFileName() << ")"
 726                          << " (for architecture " << I->getArchFlagName()
 727                          << "):\n";
 728                 printObjectSectionSizes(o);
 729                 if (OutputFormat == berkeley) {
 730                   if (MachO)
 731                     outs() << UA->getFileName() << "(" << o->getFileName()
 732                            << ")\n";
 733                   else
 734                     outs() << o->getFileName() << " (ex " << UA->getFileName()
 735                            << ")\n";
 736                 }
 737               }
 738             }
 739             if (Err)
 740               error(std::move(Err), UA->getFileName());
 741           } else {
 742             consumeError(AOrErr.takeError());
 743             error("mach-o universal file for architecture " +
 744                       StringRef(I->getArchFlagName()) +
 745                       " is not a mach-o file or an archive file",
 746                   file);
 747           }
 748           return;
 749         }
 750       }
 751     }
 752     // Either all architectures have been specified or none have been specified
 753     // and this does not contain the host architecture so dump all the slices.
 754     bool MoreThanOneArch = UB->getNumberOfObjects() > 1;
 755     for (MachOUniversalBinary::object_iterator I = UB->begin_objects(),
 756                                                E = UB->end_objects();
 757          I != E; ++I) {
 758       Expected<std::unique_ptr<ObjectFile>> UO = I->getAsObjectFile();
 759       if (UO) {
 760         if (ObjectFile *o = dyn_cast<ObjectFile>(&*UO.get())) {
 761           MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 762           if (OutputFormat == sysv)
 763             outs() << o->getFileName() << "  :\n";
 764           else if (MachO && OutputFormat == darwin) {
 765             if (MoreThanOneFile || MoreThanOneArch)
 766               outs() << o->getFileName() << " (for architecture "
 767                      << I->getArchFlagName() << "):";
 768             outs() << "\n";
 769           }
 770           printObjectSectionSizes(o);
 771           if (OutputFormat == berkeley) {
 772             if (!MachO || MoreThanOneFile || MoreThanOneArch)
 773               outs() << o->getFileName() << " (for architecture "
 774                      << I->getArchFlagName() << ")";
 775             outs() << "\n";
 776           }
 777         }
 778       } else if (auto E = isNotObjectErrorInvalidFileType(UO.takeError())) {
 779         error(std::move(E), file, MoreThanOneArch ?
 780               StringRef(I->getArchFlagName()) : StringRef());
 781         return;
 782       } else if (Expected<std::unique_ptr<Archive>> AOrErr =
 783                          I->getAsArchive()) {
 784         std::unique_ptr<Archive> &UA = *AOrErr;
 785         // This is an archive. Iterate over each member and display its sizes.
 786         Error Err = Error::success();
 787         for (auto &C : UA->children(Err)) {
 788           Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary();
 789           if (!ChildOrErr) {
 790             if (auto E = isNotObjectErrorInvalidFileType(
 791                               ChildOrErr.takeError()))
 792               error(std::move(E), UA->getFileName(), C, MoreThanOneArch ?
 793                     StringRef(I->getArchFlagName()) : StringRef());
 794             continue;
 795           }
 796           if (ObjectFile *o = dyn_cast<ObjectFile>(&*ChildOrErr.get())) {
 797             MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 798             if (OutputFormat == sysv)
 799               outs() << o->getFileName() << "   (ex " << UA->getFileName()
 800                      << "):\n";
 801             else if (MachO && OutputFormat == darwin)
 802               outs() << UA->getFileName() << "(" << o->getFileName() << ")"
 803                      << " (for architecture " << I->getArchFlagName() << "):\n";
 804             printObjectSectionSizes(o);
 805             if (OutputFormat == berkeley) {
 806               if (MachO)
 807                 outs() << UA->getFileName() << "(" << o->getFileName() << ")"
 808                        << " (for architecture " << I->getArchFlagName()
 809                        << ")\n";
 810               else
 811                 outs() << o->getFileName() << " (ex " << UA->getFileName()
 812                        << ")\n";
 813             }
 814           }
 815         }
 816         if (Err)
 817           error(std::move(Err), UA->getFileName());
 818       } else {
 819         consumeError(AOrErr.takeError());
 820         error("mach-o universal file for architecture " +
 821                   StringRef(I->getArchFlagName()) +
 822                   " is not a mach-o file or an archive file",
 823               file);
 824       }
 825     }
 826   } else if (ObjectFile *o = dyn_cast<ObjectFile>(&Bin)) {
 827     if (!checkMachOAndArchFlags(o, file))
 828       return;
 829     MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(o);
 830     if (OutputFormat == sysv)
 831       outs() << o->getFileName() << "  :\n";
 832     else if (MachO && OutputFormat == darwin && MoreThanOneFile)
 833       outs() << o->getFileName() << ":\n";
 834     printObjectSectionSizes(o);
 835     if (OutputFormat == berkeley) {
 836       if (!MachO || MoreThanOneFile)
 837         outs() << o->getFileName();
 838       outs() << "\n";
 839     }
 840   } else {
 841     error("unsupported file type", file);
 842   }
 843 }
 844
 845 static void printBerkeleyTotals() {
 846   std::string fmtbuf;
 847   raw_string_ostream fmt(fmtbuf);
 848   const char *radix_fmt = getRadixFmt();
 849   fmt << "%#7" << radix_fmt << "\t"
 850       << "%#7" << radix_fmt << "\t"
 851       << "%#7" << radix_fmt << "\t";
 852   outs() << format(fmt.str().c_str(), TotalObjectText, TotalObjectData,
 853                    TotalObjectBss);
 854   fmtbuf.clear();
 855   fmt << "%7" << (Radix == octal ? PRIo64 : PRIu64) << "\t"
 856       << "%7" PRIx64 "\t";
 857   outs() << format(fmt.str().c_str(), TotalObjectTotal, TotalObjectTotal)
 858          << "(TOTALS)\n";
 859 }
 860
 861 int main(int argc, char **argv) {
 862   InitLLVM X(argc, argv);
 863   cl::HideUnrelatedOptions(SizeCat);
 864   cl::ParseCommandLineOptions(argc, argv, "llvm object size dumper\n");
 865
 866   ToolName = argv[0];
 867   if (OutputFormatShort.getNumOccurrences())
 868     OutputFormat = static_cast<OutputFormatTy>(OutputFormatShort);
 869   if (RadixShort.getNumOccurrences())
 870     Radix = RadixShort.getValue();
 871
 872   for (StringRef Arch : ArchFlags) {
 873     if (Arch == "all") {
 874       ArchAll = true;
 875     } else {
 876       if (!MachOObjectFile::isValidArch(Arch)) {
 877         outs() << ToolName << ": for the -arch option: Unknown architecture "
 878                << "named '" << Arch << "'";
 879         return 1;
 880       }
 881     }
 882   }
 883
 884   if (InputFilenames.empty())
 885     InputFilenames.push_back("a.out");
 886
 887   MoreThanOneFile = InputFilenames.size() > 1;
 888   llvm::for_each(InputFilenames, printFileSectionSizes);
 889   if (OutputFormat == berkeley && TotalSizes)
 890     printBerkeleyTotals();
 891
 892   if (HadError)
 893     return 1;
 894 }