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106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
//===-- ELFDump.cpp - ELF-specific dumper -----------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief This file implements the ELF-specific dumper for llvm-objdump.
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///
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//===----------------------------------------------------------------------===//
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#include "llvm-objdump.h"
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#include "llvm/Object/ELFObjectFile.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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using namespace llvm::object;
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template <class ELFT> void printProgramHeaders(const ELFFile<ELFT> *o) {
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typedef ELFFile<ELFT> ELFO;
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outs() << "Program Header:\n";
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auto ProgramHeaderOrError = o->program_headers();
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if (!ProgramHeaderOrError)
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report_fatal_error(
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errorToErrorCode(ProgramHeaderOrError.takeError()).message());
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for (const typename ELFO::Elf_Phdr &Phdr : *ProgramHeaderOrError) {
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switch (Phdr.p_type) {
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case ELF::PT_DYNAMIC:
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outs() << " DYNAMIC ";
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break;
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case ELF::PT_GNU_EH_FRAME:
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outs() << "EH_FRAME ";
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break;
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case ELF::PT_GNU_RELRO:
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outs() << " RELRO ";
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break;
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case ELF::PT_GNU_STACK:
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outs() << " STACK ";
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break;
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case ELF::PT_INTERP:
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outs() << " INTERP ";
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break;
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case ELF::PT_LOAD:
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outs() << " LOAD ";
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break;
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case ELF::PT_NOTE:
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outs() << " NOTE ";
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break;
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case ELF::PT_OPENBSD_BOOTDATA:
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outs() << " OPENBSD_BOOTDATA ";
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break;
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case ELF::PT_OPENBSD_RANDOMIZE:
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outs() << " OPENBSD_RANDOMIZE ";
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break;
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case ELF::PT_OPENBSD_WXNEEDED:
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outs() << " OPENBSD_WXNEEDED ";
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break;
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case ELF::PT_PHDR:
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outs() << " PHDR ";
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break;
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case ELF::PT_TLS:
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outs() << " TLS ";
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break;
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default:
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outs() << " UNKNOWN ";
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}
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const char *Fmt = ELFT::Is64Bits ? "0x%016" PRIx64 " " : "0x%08" PRIx64 " ";
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outs() << "off " << format(Fmt, (uint64_t)Phdr.p_offset) << "vaddr "
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<< format(Fmt, (uint64_t)Phdr.p_vaddr) << "paddr "
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<< format(Fmt, (uint64_t)Phdr.p_paddr)
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<< format("align 2**%u\n",
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countTrailingZeros<uint64_t>(Phdr.p_align))
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<< " filesz " << format(Fmt, (uint64_t)Phdr.p_filesz)
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<< "memsz " << format(Fmt, (uint64_t)Phdr.p_memsz) << "flags "
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<< ((Phdr.p_flags & ELF::PF_R) ? "r" : "-")
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<< ((Phdr.p_flags & ELF::PF_W) ? "w" : "-")
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<< ((Phdr.p_flags & ELF::PF_X) ? "x" : "-") << "\n";
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}
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outs() << "\n";
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}
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void llvm::printELFFileHeader(const object::ObjectFile *Obj) {
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// Little-endian 32-bit
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if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
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printProgramHeaders(ELFObj->getELFFile());
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// Big-endian 32-bit
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if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
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printProgramHeaders(ELFObj->getELFFile());
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// Little-endian 64-bit
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if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
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printProgramHeaders(ELFObj->getELFFile());
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// Big-endian 64-bit
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if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
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printProgramHeaders(ELFObj->getELFFile());
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}
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