1 //===-- ELFDump.cpp - ELF-specific dumper -----------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// \brief This file implements the ELF-specific dumper for llvm-objdump.
13 //===----------------------------------------------------------------------===//
15 #include "llvm-objdump.h"
16 #include "llvm/Object/ELFObjectFile.h"
17 #include "llvm/Support/Format.h"
18 #include "llvm/Support/MathExtras.h"
19 #include "llvm/Support/raw_ostream.h"
22 using namespace llvm::object;
24 template <class ELFT> void printProgramHeaders(const ELFFile<ELFT> *o) {
25 typedef ELFFile<ELFT> ELFO;
26 outs() << "Program Header:\n";
27 auto ProgramHeaderOrError = o->program_headers();
28 if (!ProgramHeaderOrError)
30 errorToErrorCode(ProgramHeaderOrError.takeError()).message());
31 for (const typename ELFO::Elf_Phdr &Phdr : *ProgramHeaderOrError) {
32 switch (Phdr.p_type) {
34 outs() << " DYNAMIC ";
36 case ELF::PT_GNU_EH_FRAME:
37 outs() << "EH_FRAME ";
39 case ELF::PT_GNU_RELRO:
42 case ELF::PT_GNU_STACK:
54 case ELF::PT_OPENBSD_BOOTDATA:
55 outs() << " OPENBSD_BOOTDATA ";
57 case ELF::PT_OPENBSD_RANDOMIZE:
58 outs() << " OPENBSD_RANDOMIZE ";
60 case ELF::PT_OPENBSD_WXNEEDED:
61 outs() << " OPENBSD_WXNEEDED ";
70 outs() << " UNKNOWN ";
73 const char *Fmt = ELFT::Is64Bits ? "0x%016" PRIx64 " " : "0x%08" PRIx64 " ";
75 outs() << "off " << format(Fmt, (uint64_t)Phdr.p_offset) << "vaddr "
76 << format(Fmt, (uint64_t)Phdr.p_vaddr) << "paddr "
77 << format(Fmt, (uint64_t)Phdr.p_paddr)
78 << format("align 2**%u\n",
79 countTrailingZeros<uint64_t>(Phdr.p_align))
80 << " filesz " << format(Fmt, (uint64_t)Phdr.p_filesz)
81 << "memsz " << format(Fmt, (uint64_t)Phdr.p_memsz) << "flags "
82 << ((Phdr.p_flags & ELF::PF_R) ? "r" : "-")
83 << ((Phdr.p_flags & ELF::PF_W) ? "w" : "-")
84 << ((Phdr.p_flags & ELF::PF_X) ? "x" : "-") << "\n";
89 void llvm::printELFFileHeader(const object::ObjectFile *Obj) {
90 // Little-endian 32-bit
91 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
92 printProgramHeaders(ELFObj->getELFFile());
95 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
96 printProgramHeaders(ELFObj->getELFFile());
98 // Little-endian 64-bit
99 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
100 printProgramHeaders(ELFObj->getELFFile());
103 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
104 printProgramHeaders(ELFObj->getELFFile());