2011-01-20 14:38:34 +08:00
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//===- COFFObjectFile.cpp - COFF object file implementation -----*- 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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// This file declares the COFFObjectFile class.
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//
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//===----------------------------------------------------------------------===//
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2011-06-26 01:54:50 +08:00
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#include "llvm/Object/COFF.h"
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2012-03-20 04:27:37 +08:00
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#include "llvm/ADT/ArrayRef.h"
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2011-10-08 03:25:32 +08:00
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#include "llvm/ADT/SmallString.h"
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2011-01-20 14:38:34 +08:00
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/ADT/Triple.h"
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2013-09-28 05:04:00 +08:00
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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2013-10-12 08:55:57 +08:00
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#include <cctype>
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2011-01-20 14:38:34 +08:00
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using namespace llvm;
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using namespace object;
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using support::ulittle8_t;
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using support::ulittle16_t;
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using support::ulittle32_t;
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using support::little16_t;
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2011-06-26 01:55:23 +08:00
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// Returns false if size is greater than the buffer size. And sets ec.
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2014-01-17 04:30:36 +08:00
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static bool checkSize(const MemoryBuffer *M, error_code &EC, uint64_t Size) {
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2014-01-17 04:11:48 +08:00
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if (M->getBufferSize() < Size) {
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EC = object_error::unexpected_eof;
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2011-06-26 01:55:23 +08:00
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return false;
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}
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return true;
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}
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2013-07-20 07:23:29 +08:00
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// Sets Obj unless any bytes in [addr, addr + size) fall outsize of m.
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// Returns unexpected_eof if error.
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template<typename T>
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2014-01-17 04:30:36 +08:00
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static error_code getObject(const T *&Obj, const MemoryBuffer *M,
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const uint8_t *Ptr, const size_t Size = sizeof(T)) {
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2013-07-20 07:23:29 +08:00
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uintptr_t Addr = uintptr_t(Ptr);
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if (Addr + Size < Addr ||
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Addr + Size < Size ||
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Addr + Size > uintptr_t(M->getBufferEnd())) {
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return object_error::unexpected_eof;
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2011-06-26 01:55:23 +08:00
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}
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2013-07-20 07:23:29 +08:00
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Obj = reinterpret_cast<const T *>(Addr);
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return object_error::success;
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2011-06-26 01:55:23 +08:00
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}
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2014-01-17 04:11:48 +08:00
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const coff_symbol *COFFObjectFile::toSymb(DataRefImpl Ref) const {
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const coff_symbol *Addr = reinterpret_cast<const coff_symbol*>(Ref.p);
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2011-06-26 01:55:23 +08:00
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# ifndef NDEBUG
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// Verify that the symbol points to a valid entry in the symbol table.
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2014-01-17 04:11:48 +08:00
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uintptr_t Offset = uintptr_t(Addr) - uintptr_t(base());
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if (Offset < COFFHeader->PointerToSymbolTable
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|| Offset >= COFFHeader->PointerToSymbolTable
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2013-06-13 03:10:33 +08:00
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+ (COFFHeader->NumberOfSymbols * sizeof(coff_symbol)))
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2011-06-26 01:55:23 +08:00
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report_fatal_error("Symbol was outside of symbol table.");
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2014-01-17 04:11:48 +08:00
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assert((Offset - COFFHeader->PointerToSymbolTable) % sizeof(coff_symbol)
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2011-06-26 01:55:23 +08:00
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== 0 && "Symbol did not point to the beginning of a symbol");
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# endif
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2014-01-17 04:11:48 +08:00
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return Addr;
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2011-06-26 01:55:23 +08:00
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}
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2014-01-17 04:11:48 +08:00
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const coff_section *COFFObjectFile::toSec(DataRefImpl Ref) const {
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const coff_section *Addr = reinterpret_cast<const coff_section*>(Ref.p);
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2011-06-26 01:55:23 +08:00
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# ifndef NDEBUG
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// Verify that the section points to a valid entry in the section table.
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2014-01-17 04:11:48 +08:00
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if (Addr < SectionTable
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|| Addr >= (SectionTable + COFFHeader->NumberOfSections))
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2011-06-26 01:55:23 +08:00
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report_fatal_error("Section was outside of section table.");
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2014-01-17 04:11:48 +08:00
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uintptr_t Offset = uintptr_t(Addr) - uintptr_t(SectionTable);
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assert(Offset % sizeof(coff_section) == 0 &&
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2011-06-26 01:55:23 +08:00
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"Section did not point to the beginning of a section");
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# endif
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2014-01-17 04:11:48 +08:00
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return Addr;
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2011-06-26 01:55:23 +08:00
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}
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2014-01-30 10:49:50 +08:00
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void COFFObjectFile::moveSymbolNext(DataRefImpl &Ref) const {
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2014-01-17 04:11:48 +08:00
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const coff_symbol *Symb = toSymb(Ref);
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Symb += 1 + Symb->NumberOfAuxSymbols;
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Ref.p = reinterpret_cast<uintptr_t>(Symb);
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2011-01-20 14:38:34 +08:00
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSymbolName(DataRefImpl Ref,
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StringRef &Result) const {
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const coff_symbol *Symb = toSymb(Ref);
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return getSymbolName(Symb, Result);
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2011-01-20 14:38:34 +08:00
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSymbolFileOffset(DataRefImpl Ref,
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2011-06-26 01:55:23 +08:00
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uint64_t &Result) const {
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2014-01-17 04:11:48 +08:00
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const coff_symbol *Symb = toSymb(Ref);
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2011-07-05 22:48:59 +08:00
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const coff_section *Section = NULL;
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2014-01-17 04:11:48 +08:00
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if (error_code EC = getSection(Symb->SectionNumber, Section))
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return EC;
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2013-11-03 02:07:48 +08:00
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2014-01-17 04:11:48 +08:00
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if (Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED)
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2011-06-26 01:55:23 +08:00
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Result = UnknownAddressOrSize;
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else if (Section)
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2014-01-17 04:11:48 +08:00
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Result = Section->PointerToRawData + Symb->Value;
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2011-06-26 01:55:23 +08:00
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else
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2014-01-17 04:11:48 +08:00
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Result = Symb->Value;
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2011-06-26 01:55:23 +08:00
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return object_error::success;
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2011-01-20 14:38:34 +08:00
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSymbolAddress(DataRefImpl Ref,
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2011-09-14 09:22:52 +08:00
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uint64_t &Result) const {
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2014-01-17 04:11:48 +08:00
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const coff_symbol *Symb = toSymb(Ref);
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2011-09-14 09:22:52 +08:00
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const coff_section *Section = NULL;
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2014-01-17 04:11:48 +08:00
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if (error_code EC = getSection(Symb->SectionNumber, Section))
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return EC;
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2013-11-03 02:07:48 +08:00
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2014-01-17 04:11:48 +08:00
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if (Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED)
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2011-09-14 09:22:52 +08:00
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Result = UnknownAddressOrSize;
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else if (Section)
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2014-01-17 04:11:48 +08:00
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Result = Section->VirtualAddress + Symb->Value;
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2011-09-14 09:22:52 +08:00
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else
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2014-01-17 04:11:48 +08:00
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Result = Symb->Value;
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2011-09-14 09:22:52 +08:00
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return object_error::success;
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSymbolType(DataRefImpl Ref,
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2011-10-18 04:19:29 +08:00
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SymbolRef::Type &Result) const {
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2014-01-17 04:11:48 +08:00
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const coff_symbol *Symb = toSymb(Ref);
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2011-09-14 09:22:52 +08:00
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Result = SymbolRef::ST_Other;
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2014-01-17 04:11:48 +08:00
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if (Symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL &&
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Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED) {
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2012-02-29 10:11:55 +08:00
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Result = SymbolRef::ST_Unknown;
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2014-01-17 04:22:55 +08:00
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} else if (Symb->getComplexType() == COFF::IMAGE_SYM_DTYPE_FUNCTION) {
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Result = SymbolRef::ST_Function;
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2011-09-14 09:22:52 +08:00
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} else {
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2014-01-17 04:22:55 +08:00
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uint32_t Characteristics = 0;
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if (Symb->SectionNumber > 0) {
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const coff_section *Section = NULL;
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if (error_code EC = getSection(Symb->SectionNumber, Section))
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return EC;
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Characteristics = Section->Characteristics;
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2011-09-14 09:22:52 +08:00
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}
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2014-01-17 04:22:55 +08:00
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if (Characteristics & COFF::IMAGE_SCN_MEM_READ &&
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~Characteristics & COFF::IMAGE_SCN_MEM_WRITE) // Read only.
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Result = SymbolRef::ST_Data;
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2011-09-14 09:22:52 +08:00
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}
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return object_error::success;
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}
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2014-02-01 04:57:12 +08:00
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uint32_t COFFObjectFile::getSymbolFlags(DataRefImpl Ref) const {
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2014-01-17 04:11:48 +08:00
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const coff_symbol *Symb = toSymb(Ref);
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2014-02-01 04:57:12 +08:00
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uint32_t Result = SymbolRef::SF_None;
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2012-02-29 07:47:53 +08:00
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2012-02-29 10:11:55 +08:00
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// TODO: Correctly set SF_FormatSpecific, SF_ThreadLocal, SF_Common
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2014-01-17 04:11:48 +08:00
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if (Symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL &&
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Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED)
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2012-02-29 10:11:55 +08:00
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Result |= SymbolRef::SF_Undefined;
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2012-02-29 07:47:53 +08:00
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// TODO: This are certainly too restrictive.
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2014-01-17 04:11:48 +08:00
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if (Symb->StorageClass == COFF::IMAGE_SYM_CLASS_EXTERNAL)
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2012-02-29 07:47:53 +08:00
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Result |= SymbolRef::SF_Global;
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2014-01-17 04:11:48 +08:00
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if (Symb->StorageClass == COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL)
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2012-02-29 07:47:53 +08:00
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Result |= SymbolRef::SF_Weak;
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2014-01-17 04:11:48 +08:00
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if (Symb->SectionNumber == COFF::IMAGE_SYM_ABSOLUTE)
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2012-02-29 07:47:53 +08:00
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Result |= SymbolRef::SF_Absolute;
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2011-09-14 09:22:52 +08:00
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2014-02-01 04:57:12 +08:00
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return Result;
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2011-10-18 07:54:22 +08:00
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSymbolSize(DataRefImpl Ref,
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2011-06-26 01:55:23 +08:00
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uint64_t &Result) const {
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2011-01-20 14:38:34 +08:00
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// FIXME: Return the correct size. This requires looking at all the symbols
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// in the same section as this symbol, and looking for either the next
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// symbol, or the end of the section.
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2014-01-17 04:11:48 +08:00
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const coff_symbol *Symb = toSymb(Ref);
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2011-07-05 22:48:59 +08:00
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const coff_section *Section = NULL;
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2014-01-17 04:11:48 +08:00
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if (error_code EC = getSection(Symb->SectionNumber, Section))
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return EC;
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2013-11-03 02:07:48 +08:00
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2014-01-17 04:11:48 +08:00
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if (Symb->SectionNumber == COFF::IMAGE_SYM_UNDEFINED)
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2011-06-26 01:55:23 +08:00
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Result = UnknownAddressOrSize;
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else if (Section)
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2014-01-17 04:11:48 +08:00
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Result = Section->SizeOfRawData - Symb->Value;
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2011-06-26 01:55:23 +08:00
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else
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Result = 0;
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return object_error::success;
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2011-01-20 14:38:34 +08:00
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSymbolSection(DataRefImpl Ref,
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2011-10-18 07:54:46 +08:00
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section_iterator &Result) const {
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2014-01-17 04:11:48 +08:00
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const coff_symbol *Symb = toSymb(Ref);
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if (Symb->SectionNumber <= COFF::IMAGE_SYM_UNDEFINED)
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2011-10-18 07:54:46 +08:00
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Result = end_sections();
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else {
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2014-01-17 04:11:48 +08:00
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const coff_section *Sec = 0;
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if (error_code EC = getSection(Symb->SectionNumber, Sec)) return EC;
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DataRefImpl Ref;
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Ref.p = reinterpret_cast<uintptr_t>(Sec);
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Result = section_iterator(SectionRef(Ref, this));
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2011-10-18 07:54:46 +08:00
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}
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return object_error::success;
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSymbolValue(DataRefImpl Ref,
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2012-10-29 18:47:00 +08:00
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uint64_t &Val) const {
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report_fatal_error("getSymbolValue unimplemented in COFFObjectFile");
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}
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2014-01-30 10:49:50 +08:00
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void COFFObjectFile::moveSectionNext(DataRefImpl &Ref) const {
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2014-01-17 04:11:48 +08:00
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const coff_section *Sec = toSec(Ref);
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Sec += 1;
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Ref.p = reinterpret_cast<uintptr_t>(Sec);
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2011-01-20 14:38:34 +08:00
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSectionName(DataRefImpl Ref,
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2011-06-26 01:55:23 +08:00
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StringRef &Result) const {
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2014-01-17 04:11:48 +08:00
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const coff_section *Sec = toSec(Ref);
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return getSectionName(Sec, Result);
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2011-01-20 14:38:34 +08:00
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSectionAddress(DataRefImpl Ref,
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2011-06-26 01:55:23 +08:00
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uint64_t &Result) const {
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2014-01-17 04:11:48 +08:00
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const coff_section *Sec = toSec(Ref);
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Result = Sec->VirtualAddress;
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2011-06-26 01:55:23 +08:00
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return object_error::success;
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2011-01-20 14:38:34 +08:00
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSectionSize(DataRefImpl Ref,
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2011-06-26 01:55:23 +08:00
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uint64_t &Result) const {
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2014-01-17 04:11:48 +08:00
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const coff_section *Sec = toSec(Ref);
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Result = Sec->SizeOfRawData;
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2011-06-26 01:55:23 +08:00
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return object_error::success;
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2011-01-20 14:38:34 +08:00
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSectionContents(DataRefImpl Ref,
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2011-06-26 01:55:23 +08:00
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StringRef &Result) const {
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2014-01-17 04:11:48 +08:00
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const coff_section *Sec = toSec(Ref);
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2012-03-20 04:27:37 +08:00
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ArrayRef<uint8_t> Res;
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2014-01-17 04:11:48 +08:00
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error_code EC = getSectionContents(Sec, Res);
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2012-03-20 04:27:37 +08:00
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Result = StringRef(reinterpret_cast<const char*>(Res.data()), Res.size());
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return EC;
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2011-01-20 14:38:34 +08:00
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}
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2014-01-17 04:11:48 +08:00
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error_code COFFObjectFile::getSectionAlignment(DataRefImpl Ref,
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2011-10-11 05:55:43 +08:00
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uint64_t &Res) const {
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2014-01-17 04:11:48 +08:00
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const coff_section *Sec = toSec(Ref);
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if (!Sec)
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2011-10-11 05:55:43 +08:00
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return object_error::parse_failed;
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2014-01-17 04:11:48 +08:00
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Res = uint64_t(1) << (((Sec->Characteristics & 0x00F00000) >> 20) - 1);
|
2011-10-11 05:55:43 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::isSectionText(DataRefImpl Ref,
|
2011-06-26 01:55:23 +08:00
|
|
|
bool &Result) const {
|
2014-01-17 04:11:48 +08:00
|
|
|
const coff_section *Sec = toSec(Ref);
|
|
|
|
Result = Sec->Characteristics & COFF::IMAGE_SCN_CNT_CODE;
|
2011-09-29 04:57:30 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::isSectionData(DataRefImpl Ref,
|
2011-09-29 04:57:30 +08:00
|
|
|
bool &Result) const {
|
2014-01-17 04:11:48 +08:00
|
|
|
const coff_section *Sec = toSec(Ref);
|
|
|
|
Result = Sec->Characteristics & COFF::IMAGE_SCN_CNT_INITIALIZED_DATA;
|
2011-09-29 04:57:30 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::isSectionBSS(DataRefImpl Ref,
|
2011-09-29 04:57:30 +08:00
|
|
|
bool &Result) const {
|
2014-01-17 04:11:48 +08:00
|
|
|
const coff_section *Sec = toSec(Ref);
|
|
|
|
Result = Sec->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
|
2011-06-26 01:55:23 +08:00
|
|
|
return object_error::success;
|
2011-01-20 14:38:34 +08:00
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::isSectionRequiredForExecution(DataRefImpl Ref,
|
2012-04-13 04:13:57 +08:00
|
|
|
bool &Result) const {
|
|
|
|
// FIXME: Unimplemented
|
|
|
|
Result = true;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::isSectionVirtual(DataRefImpl Ref,
|
2012-04-13 04:13:57 +08:00
|
|
|
bool &Result) const {
|
2014-01-17 04:11:48 +08:00
|
|
|
const coff_section *Sec = toSec(Ref);
|
|
|
|
Result = Sec->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
|
2012-04-13 04:13:57 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::isSectionZeroInit(DataRefImpl Ref,
|
2012-04-13 04:13:57 +08:00
|
|
|
bool &Result) const {
|
2012-10-10 09:45:52 +08:00
|
|
|
// FIXME: Unimplemented.
|
2012-04-13 04:13:57 +08:00
|
|
|
Result = false;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::isSectionReadOnlyData(DataRefImpl Ref,
|
2012-10-10 09:41:33 +08:00
|
|
|
bool &Result) const {
|
|
|
|
// FIXME: Unimplemented.
|
|
|
|
Result = false;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::sectionContainsSymbol(DataRefImpl SecRef,
|
|
|
|
DataRefImpl SymbRef,
|
2011-07-16 02:39:21 +08:00
|
|
|
bool &Result) const {
|
2014-01-17 04:11:48 +08:00
|
|
|
const coff_section *Sec = toSec(SecRef);
|
|
|
|
const coff_symbol *Symb = toSymb(SymbRef);
|
|
|
|
const coff_section *SymbSec = 0;
|
|
|
|
if (error_code EC = getSection(Symb->SectionNumber, SymbSec)) return EC;
|
|
|
|
if (SymbSec == Sec)
|
2011-10-14 04:36:54 +08:00
|
|
|
Result = true;
|
|
|
|
else
|
|
|
|
Result = false;
|
2011-07-16 02:39:21 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
relocation_iterator COFFObjectFile::section_rel_begin(DataRefImpl Ref) const {
|
|
|
|
const coff_section *Sec = toSec(Ref);
|
|
|
|
DataRefImpl Ret;
|
|
|
|
if (Sec->NumberOfRelocations == 0)
|
|
|
|
Ret.p = 0;
|
2011-10-08 03:25:32 +08:00
|
|
|
else
|
2014-01-17 04:11:48 +08:00
|
|
|
Ret.p = reinterpret_cast<uintptr_t>(base() + Sec->PointerToRelocations);
|
2011-10-08 03:25:32 +08:00
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
return relocation_iterator(RelocationRef(Ret, this));
|
2011-10-08 03:25:32 +08:00
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
relocation_iterator COFFObjectFile::section_rel_end(DataRefImpl Ref) const {
|
|
|
|
const coff_section *Sec = toSec(Ref);
|
|
|
|
DataRefImpl Ret;
|
|
|
|
if (Sec->NumberOfRelocations == 0)
|
|
|
|
Ret.p = 0;
|
2011-10-08 03:25:32 +08:00
|
|
|
else
|
2014-01-17 04:11:48 +08:00
|
|
|
Ret.p = reinterpret_cast<uintptr_t>(
|
2011-10-08 03:25:32 +08:00
|
|
|
reinterpret_cast<const coff_relocation*>(
|
2014-01-17 04:11:48 +08:00
|
|
|
base() + Sec->PointerToRelocations)
|
|
|
|
+ Sec->NumberOfRelocations);
|
2011-10-08 03:25:32 +08:00
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
return relocation_iterator(RelocationRef(Ret, this));
|
2011-10-08 03:25:32 +08:00
|
|
|
}
|
|
|
|
|
2013-09-28 05:04:00 +08:00
|
|
|
// Initialize the pointer to the symbol table.
|
|
|
|
error_code COFFObjectFile::initSymbolTablePtr() {
|
2014-01-17 04:11:48 +08:00
|
|
|
if (error_code EC = getObject(
|
2013-09-28 05:04:00 +08:00
|
|
|
SymbolTable, Data, base() + COFFHeader->PointerToSymbolTable,
|
|
|
|
COFFHeader->NumberOfSymbols * sizeof(coff_symbol)))
|
2014-01-17 04:11:48 +08:00
|
|
|
return EC;
|
2013-09-28 05:04:00 +08:00
|
|
|
|
|
|
|
// Find string table. The first four byte of the string table contains the
|
|
|
|
// total size of the string table, including the size field itself. If the
|
|
|
|
// string table is empty, the value of the first four byte would be 4.
|
|
|
|
const uint8_t *StringTableAddr =
|
|
|
|
base() + COFFHeader->PointerToSymbolTable +
|
|
|
|
COFFHeader->NumberOfSymbols * sizeof(coff_symbol);
|
|
|
|
const ulittle32_t *StringTableSizePtr;
|
2014-01-17 04:11:48 +08:00
|
|
|
if (error_code EC = getObject(StringTableSizePtr, Data, StringTableAddr))
|
|
|
|
return EC;
|
2013-09-28 05:04:00 +08:00
|
|
|
StringTableSize = *StringTableSizePtr;
|
2014-01-17 04:11:48 +08:00
|
|
|
if (error_code EC =
|
2013-09-28 05:04:00 +08:00
|
|
|
getObject(StringTable, Data, StringTableAddr, StringTableSize))
|
2014-01-17 04:11:48 +08:00
|
|
|
return EC;
|
2013-09-28 05:04:00 +08:00
|
|
|
|
|
|
|
// Check that the string table is null terminated if has any in it.
|
|
|
|
if (StringTableSize < 4 ||
|
|
|
|
(StringTableSize > 4 && StringTable[StringTableSize - 1] != 0))
|
|
|
|
return object_error::parse_failed;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Returns the file offset for the given RVA.
|
|
|
|
error_code COFFObjectFile::getRvaPtr(uint32_t Rva, uintptr_t &Res) const {
|
2014-01-17 04:11:48 +08:00
|
|
|
for (section_iterator I = begin_sections(), E = end_sections(); I != E;
|
2014-01-30 10:49:50 +08:00
|
|
|
++I) {
|
2014-01-17 04:11:48 +08:00
|
|
|
const coff_section *Section = getCOFFSection(I);
|
2013-09-28 05:04:00 +08:00
|
|
|
uint32_t SectionStart = Section->VirtualAddress;
|
|
|
|
uint32_t SectionEnd = Section->VirtualAddress + Section->VirtualSize;
|
|
|
|
if (SectionStart <= Rva && Rva < SectionEnd) {
|
|
|
|
uint32_t Offset = Rva - SectionStart;
|
|
|
|
Res = uintptr_t(base()) + Section->PointerToRawData + Offset;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return object_error::parse_failed;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Returns hint and name fields, assuming \p Rva is pointing to a Hint/Name
|
|
|
|
// table entry.
|
|
|
|
error_code COFFObjectFile::
|
|
|
|
getHintName(uint32_t Rva, uint16_t &Hint, StringRef &Name) const {
|
|
|
|
uintptr_t IntPtr = 0;
|
2014-01-17 04:11:48 +08:00
|
|
|
if (error_code EC = getRvaPtr(Rva, IntPtr))
|
|
|
|
return EC;
|
2013-09-28 05:04:00 +08:00
|
|
|
const uint8_t *Ptr = reinterpret_cast<const uint8_t *>(IntPtr);
|
|
|
|
Hint = *reinterpret_cast<const ulittle16_t *>(Ptr);
|
|
|
|
Name = StringRef(reinterpret_cast<const char *>(Ptr + 2));
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Find the import table.
|
|
|
|
error_code COFFObjectFile::initImportTablePtr() {
|
|
|
|
// First, we get the RVA of the import table. If the file lacks a pointer to
|
|
|
|
// the import table, do nothing.
|
|
|
|
const data_directory *DataEntry;
|
|
|
|
if (getDataDirectory(COFF::IMPORT_TABLE, DataEntry))
|
|
|
|
return object_error::success;
|
|
|
|
|
|
|
|
// Do nothing if the pointer to import table is NULL.
|
|
|
|
if (DataEntry->RelativeVirtualAddress == 0)
|
|
|
|
return object_error::success;
|
|
|
|
|
|
|
|
uint32_t ImportTableRva = DataEntry->RelativeVirtualAddress;
|
|
|
|
NumberOfImportDirectory = DataEntry->Size /
|
|
|
|
sizeof(import_directory_table_entry);
|
|
|
|
|
|
|
|
// Find the section that contains the RVA. This is needed because the RVA is
|
|
|
|
// the import table's memory address which is different from its file offset.
|
|
|
|
uintptr_t IntPtr = 0;
|
2014-01-17 04:11:48 +08:00
|
|
|
if (error_code EC = getRvaPtr(ImportTableRva, IntPtr))
|
|
|
|
return EC;
|
2013-09-28 05:04:00 +08:00
|
|
|
ImportDirectory = reinterpret_cast<
|
|
|
|
const import_directory_table_entry *>(IntPtr);
|
2014-01-16 15:05:49 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
2013-09-28 05:04:00 +08:00
|
|
|
|
2014-01-16 15:05:49 +08:00
|
|
|
// Find the export table.
|
|
|
|
error_code COFFObjectFile::initExportTablePtr() {
|
|
|
|
// First, we get the RVA of the export table. If the file lacks a pointer to
|
|
|
|
// the export table, do nothing.
|
|
|
|
const data_directory *DataEntry;
|
|
|
|
if (getDataDirectory(COFF::EXPORT_TABLE, DataEntry))
|
|
|
|
return object_error::success;
|
|
|
|
|
|
|
|
// Do nothing if the pointer to export table is NULL.
|
|
|
|
if (DataEntry->RelativeVirtualAddress == 0)
|
|
|
|
return object_error::success;
|
|
|
|
|
|
|
|
uint32_t ExportTableRva = DataEntry->RelativeVirtualAddress;
|
|
|
|
uintptr_t IntPtr = 0;
|
|
|
|
if (error_code EC = getRvaPtr(ExportTableRva, IntPtr))
|
|
|
|
return EC;
|
2014-01-18 06:11:27 +08:00
|
|
|
ExportDirectory =
|
|
|
|
reinterpret_cast<const export_directory_table_entry *>(IntPtr);
|
2014-01-16 15:05:49 +08:00
|
|
|
return object_error::success;
|
2013-09-28 05:04:00 +08:00
|
|
|
}
|
|
|
|
|
2014-01-25 05:32:21 +08:00
|
|
|
COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &EC,
|
|
|
|
bool BufferOwned)
|
|
|
|
: ObjectFile(Binary::ID_COFF, Object, BufferOwned), COFFHeader(0),
|
2014-01-26 12:15:52 +08:00
|
|
|
PE32Header(0), PE32PlusHeader(0), DataDirectory(0), SectionTable(0),
|
|
|
|
SymbolTable(0), StringTable(0), StringTableSize(0), ImportDirectory(0),
|
2014-01-25 05:32:21 +08:00
|
|
|
NumberOfImportDirectory(0), ExportDirectory(0) {
|
2011-06-26 01:55:23 +08:00
|
|
|
// Check that we at least have enough room for a header.
|
2014-01-17 04:11:48 +08:00
|
|
|
if (!checkSize(Data, EC, sizeof(coff_file_header))) return;
|
2011-04-04 06:53:19 +08:00
|
|
|
|
2013-06-13 03:10:33 +08:00
|
|
|
// The current location in the file where we are looking at.
|
|
|
|
uint64_t CurPtr = 0;
|
|
|
|
|
|
|
|
// PE header is optional and is present only in executables. If it exists,
|
|
|
|
// it is placed right after COFF header.
|
2014-01-17 04:11:48 +08:00
|
|
|
bool HasPEHeader = false;
|
2011-04-04 06:53:19 +08:00
|
|
|
|
2011-06-26 01:55:23 +08:00
|
|
|
// Check if this is a PE/COFF file.
|
2011-06-26 01:54:50 +08:00
|
|
|
if (base()[0] == 0x4d && base()[1] == 0x5a) {
|
2011-04-04 06:53:19 +08:00
|
|
|
// PE/COFF, seek through MS-DOS compatibility stub and 4-byte
|
|
|
|
// PE signature to find 'normal' COFF header.
|
2014-01-17 04:11:48 +08:00
|
|
|
if (!checkSize(Data, EC, 0x3c + 8)) return;
|
2013-06-13 03:10:33 +08:00
|
|
|
CurPtr = *reinterpret_cast<const ulittle16_t *>(base() + 0x3c);
|
|
|
|
// Check the PE magic bytes. ("PE\0\0")
|
|
|
|
if (std::memcmp(base() + CurPtr, "PE\0\0", 4) != 0) {
|
2014-01-17 04:11:48 +08:00
|
|
|
EC = object_error::parse_failed;
|
2011-06-26 01:55:23 +08:00
|
|
|
return;
|
|
|
|
}
|
2013-06-13 03:10:33 +08:00
|
|
|
CurPtr += 4; // Skip the PE magic bytes.
|
2014-01-17 04:11:48 +08:00
|
|
|
HasPEHeader = true;
|
2011-04-04 06:53:19 +08:00
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
if ((EC = getObject(COFFHeader, Data, base() + CurPtr)))
|
2011-06-26 01:55:23 +08:00
|
|
|
return;
|
2013-06-13 03:10:33 +08:00
|
|
|
CurPtr += sizeof(coff_file_header);
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
if (HasPEHeader) {
|
2014-01-26 12:15:52 +08:00
|
|
|
const pe32_header *Header;
|
|
|
|
if ((EC = getObject(Header, Data, base() + CurPtr)))
|
|
|
|
return;
|
|
|
|
|
|
|
|
const uint8_t *DataDirAddr;
|
|
|
|
uint64_t DataDirSize;
|
|
|
|
if (Header->Magic == 0x10b) {
|
|
|
|
PE32Header = Header;
|
|
|
|
DataDirAddr = base() + CurPtr + sizeof(pe32_header);
|
|
|
|
DataDirSize = sizeof(data_directory) * PE32Header->NumberOfRvaAndSize;
|
|
|
|
} else if (Header->Magic == 0x20b) {
|
|
|
|
PE32PlusHeader = reinterpret_cast<const pe32plus_header *>(Header);
|
|
|
|
DataDirAddr = base() + CurPtr + sizeof(pe32plus_header);
|
|
|
|
DataDirSize = sizeof(data_directory) * PE32PlusHeader->NumberOfRvaAndSize;
|
|
|
|
} else {
|
|
|
|
// It's neither PE32 nor PE32+.
|
|
|
|
EC = object_error::parse_failed;
|
2013-06-13 03:10:33 +08:00
|
|
|
return;
|
2013-07-20 07:23:29 +08:00
|
|
|
}
|
2014-01-26 12:15:52 +08:00
|
|
|
if ((EC = getObject(DataDirectory, Data, DataDirAddr, DataDirSize)))
|
|
|
|
return;
|
2013-06-13 03:10:33 +08:00
|
|
|
CurPtr += COFFHeader->SizeOfOptionalHeader;
|
|
|
|
}
|
2011-09-09 04:52:17 +08:00
|
|
|
|
2014-01-22 07:06:54 +08:00
|
|
|
if (COFFHeader->isImportLibrary())
|
|
|
|
return;
|
|
|
|
|
|
|
|
if ((EC = getObject(SectionTable, Data, base() + CurPtr,
|
|
|
|
COFFHeader->NumberOfSections * sizeof(coff_section))))
|
|
|
|
return;
|
2011-06-26 01:55:23 +08:00
|
|
|
|
2013-09-28 05:04:00 +08:00
|
|
|
// Initialize the pointer to the symbol table.
|
|
|
|
if (COFFHeader->PointerToSymbolTable != 0)
|
2014-01-17 04:11:48 +08:00
|
|
|
if ((EC = initSymbolTablePtr()))
|
2011-11-09 07:34:07 +08:00
|
|
|
return;
|
2011-01-20 14:38:34 +08:00
|
|
|
|
2013-09-28 05:04:00 +08:00
|
|
|
// Initialize the pointer to the beginning of the import table.
|
2014-01-17 04:11:48 +08:00
|
|
|
if ((EC = initImportTablePtr()))
|
2013-09-28 05:04:00 +08:00
|
|
|
return;
|
2011-09-09 04:52:17 +08:00
|
|
|
|
2014-01-16 15:05:49 +08:00
|
|
|
// Initialize the pointer to the export table.
|
2014-01-17 04:11:48 +08:00
|
|
|
if ((EC = initExportTablePtr()))
|
2014-01-16 15:05:49 +08:00
|
|
|
return;
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
EC = object_error::success;
|
2011-01-20 14:38:34 +08:00
|
|
|
}
|
|
|
|
|
2011-10-08 03:25:32 +08:00
|
|
|
symbol_iterator COFFObjectFile::begin_symbols() const {
|
2014-01-17 04:11:48 +08:00
|
|
|
DataRefImpl Ret;
|
|
|
|
Ret.p = reinterpret_cast<uintptr_t>(SymbolTable);
|
|
|
|
return symbol_iterator(SymbolRef(Ret, this));
|
2011-01-20 14:38:34 +08:00
|
|
|
}
|
|
|
|
|
2011-10-08 03:25:32 +08:00
|
|
|
symbol_iterator COFFObjectFile::end_symbols() const {
|
2011-01-20 14:38:34 +08:00
|
|
|
// The symbol table ends where the string table begins.
|
2014-01-17 04:11:48 +08:00
|
|
|
DataRefImpl Ret;
|
|
|
|
Ret.p = reinterpret_cast<uintptr_t>(StringTable);
|
|
|
|
return symbol_iterator(SymbolRef(Ret, this));
|
2011-01-20 14:38:34 +08:00
|
|
|
}
|
|
|
|
|
2012-03-01 09:36:50 +08:00
|
|
|
library_iterator COFFObjectFile::begin_libraries_needed() const {
|
|
|
|
// TODO: implement
|
|
|
|
report_fatal_error("Libraries needed unimplemented in COFFObjectFile");
|
|
|
|
}
|
|
|
|
|
|
|
|
library_iterator COFFObjectFile::end_libraries_needed() const {
|
|
|
|
// TODO: implement
|
|
|
|
report_fatal_error("Libraries needed unimplemented in COFFObjectFile");
|
|
|
|
}
|
|
|
|
|
2012-03-02 06:19:54 +08:00
|
|
|
StringRef COFFObjectFile::getLoadName() const {
|
|
|
|
// COFF does not have this field.
|
|
|
|
return "";
|
|
|
|
}
|
|
|
|
|
2013-09-28 05:47:05 +08:00
|
|
|
import_directory_iterator COFFObjectFile::import_directory_begin() const {
|
2014-01-16 11:13:19 +08:00
|
|
|
return import_directory_iterator(
|
|
|
|
ImportDirectoryEntryRef(ImportDirectory, 0, this));
|
2013-09-28 05:04:00 +08:00
|
|
|
}
|
|
|
|
|
2013-09-28 05:47:05 +08:00
|
|
|
import_directory_iterator COFFObjectFile::import_directory_end() const {
|
2014-01-16 11:13:19 +08:00
|
|
|
return import_directory_iterator(
|
|
|
|
ImportDirectoryEntryRef(ImportDirectory, NumberOfImportDirectory, this));
|
2013-09-28 05:04:00 +08:00
|
|
|
}
|
2012-03-02 06:19:54 +08:00
|
|
|
|
2014-01-16 15:05:49 +08:00
|
|
|
export_directory_iterator COFFObjectFile::export_directory_begin() const {
|
|
|
|
return export_directory_iterator(
|
|
|
|
ExportDirectoryEntryRef(ExportDirectory, 0, this));
|
|
|
|
}
|
|
|
|
|
|
|
|
export_directory_iterator COFFObjectFile::export_directory_end() const {
|
|
|
|
if (ExportDirectory == 0)
|
|
|
|
return export_directory_iterator(ExportDirectoryEntryRef(0, 0, this));
|
2014-01-17 04:11:48 +08:00
|
|
|
ExportDirectoryEntryRef Ref(ExportDirectory,
|
2014-01-16 15:05:49 +08:00
|
|
|
ExportDirectory->AddressTableEntries, this);
|
2014-01-17 04:11:48 +08:00
|
|
|
return export_directory_iterator(Ref);
|
2014-01-16 15:05:49 +08:00
|
|
|
}
|
|
|
|
|
2011-10-08 03:25:32 +08:00
|
|
|
section_iterator COFFObjectFile::begin_sections() const {
|
2014-01-17 04:11:48 +08:00
|
|
|
DataRefImpl Ret;
|
|
|
|
Ret.p = reinterpret_cast<uintptr_t>(SectionTable);
|
|
|
|
return section_iterator(SectionRef(Ret, this));
|
2011-01-20 14:38:34 +08:00
|
|
|
}
|
|
|
|
|
2011-10-08 03:25:32 +08:00
|
|
|
section_iterator COFFObjectFile::end_sections() const {
|
2014-01-17 04:11:48 +08:00
|
|
|
DataRefImpl Ret;
|
|
|
|
int NumSections = COFFHeader->isImportLibrary()
|
2013-11-16 04:23:25 +08:00
|
|
|
? 0 : COFFHeader->NumberOfSections;
|
2014-01-17 04:11:48 +08:00
|
|
|
Ret.p = reinterpret_cast<uintptr_t>(SectionTable + NumSections);
|
|
|
|
return section_iterator(SectionRef(Ret, this));
|
2011-01-20 14:38:34 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
uint8_t COFFObjectFile::getBytesInAddress() const {
|
2011-01-21 10:27:02 +08:00
|
|
|
return getArch() == Triple::x86_64 ? 8 : 4;
|
2011-01-20 14:38:34 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
StringRef COFFObjectFile::getFileFormatName() const {
|
2013-06-13 03:10:33 +08:00
|
|
|
switch(COFFHeader->Machine) {
|
2011-01-20 14:38:34 +08:00
|
|
|
case COFF::IMAGE_FILE_MACHINE_I386:
|
|
|
|
return "COFF-i386";
|
|
|
|
case COFF::IMAGE_FILE_MACHINE_AMD64:
|
|
|
|
return "COFF-x86-64";
|
|
|
|
default:
|
|
|
|
return "COFF-<unknown arch>";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
unsigned COFFObjectFile::getArch() const {
|
2013-06-13 03:10:33 +08:00
|
|
|
switch(COFFHeader->Machine) {
|
2011-01-20 14:38:34 +08:00
|
|
|
case COFF::IMAGE_FILE_MACHINE_I386:
|
|
|
|
return Triple::x86;
|
|
|
|
case COFF::IMAGE_FILE_MACHINE_AMD64:
|
|
|
|
return Triple::x86_64;
|
|
|
|
default:
|
|
|
|
return Triple::UnknownArch;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-06-13 03:10:33 +08:00
|
|
|
// This method is kept here because lld uses this. As soon as we make
|
|
|
|
// lld to use getCOFFHeader, this method will be removed.
|
2011-10-18 07:53:56 +08:00
|
|
|
error_code COFFObjectFile::getHeader(const coff_file_header *&Res) const {
|
2013-06-13 03:10:33 +08:00
|
|
|
return getCOFFHeader(Res);
|
|
|
|
}
|
|
|
|
|
|
|
|
error_code COFFObjectFile::getCOFFHeader(const coff_file_header *&Res) const {
|
|
|
|
Res = COFFHeader;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
|
|
|
error_code COFFObjectFile::getPE32Header(const pe32_header *&Res) const {
|
|
|
|
Res = PE32Header;
|
2011-10-18 07:53:56 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-26 12:15:52 +08:00
|
|
|
error_code
|
|
|
|
COFFObjectFile::getPE32PlusHeader(const pe32plus_header *&Res) const {
|
|
|
|
Res = PE32PlusHeader;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::getDataDirectory(uint32_t Index,
|
2013-07-20 07:23:29 +08:00
|
|
|
const data_directory *&Res) const {
|
|
|
|
// Error if if there's no data directory or the index is out of range.
|
2014-01-26 12:15:52 +08:00
|
|
|
if (!DataDirectory)
|
|
|
|
return object_error::parse_failed;
|
|
|
|
assert(PE32Header || PE32PlusHeader);
|
|
|
|
uint32_t NumEnt = PE32Header ? PE32Header->NumberOfRvaAndSize
|
|
|
|
: PE32PlusHeader->NumberOfRvaAndSize;
|
|
|
|
if (Index > NumEnt)
|
2013-07-20 07:23:29 +08:00
|
|
|
return object_error::parse_failed;
|
2014-01-17 04:11:48 +08:00
|
|
|
Res = &DataDirectory[Index];
|
2013-07-20 07:23:29 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::getSection(int32_t Index,
|
2011-06-26 01:55:23 +08:00
|
|
|
const coff_section *&Result) const {
|
|
|
|
// Check for special index values.
|
2014-01-17 04:11:48 +08:00
|
|
|
if (Index == COFF::IMAGE_SYM_UNDEFINED ||
|
|
|
|
Index == COFF::IMAGE_SYM_ABSOLUTE ||
|
|
|
|
Index == COFF::IMAGE_SYM_DEBUG)
|
2011-06-26 01:55:23 +08:00
|
|
|
Result = NULL;
|
2014-01-17 04:11:48 +08:00
|
|
|
else if (Index > 0 && Index <= COFFHeader->NumberOfSections)
|
2011-06-26 01:55:23 +08:00
|
|
|
// We already verified the section table data, so no need to check again.
|
2014-01-17 04:11:48 +08:00
|
|
|
Result = SectionTable + (Index - 1);
|
2011-06-26 01:55:23 +08:00
|
|
|
else
|
|
|
|
return object_error::parse_failed;
|
|
|
|
return object_error::success;
|
2011-01-20 14:38:34 +08:00
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::getString(uint32_t Offset,
|
2011-06-26 01:55:23 +08:00
|
|
|
StringRef &Result) const {
|
|
|
|
if (StringTableSize <= 4)
|
|
|
|
// Tried to get a string from an empty string table.
|
|
|
|
return object_error::parse_failed;
|
2014-01-17 04:11:48 +08:00
|
|
|
if (Offset >= StringTableSize)
|
2011-06-26 01:55:23 +08:00
|
|
|
return object_error::unexpected_eof;
|
2014-01-17 04:11:48 +08:00
|
|
|
Result = StringRef(StringTable + Offset);
|
2011-06-26 01:55:23 +08:00
|
|
|
return object_error::success;
|
2011-01-20 14:38:34 +08:00
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::getSymbol(uint32_t Index,
|
2011-10-08 03:25:32 +08:00
|
|
|
const coff_symbol *&Result) const {
|
2014-01-17 04:11:48 +08:00
|
|
|
if (Index < COFFHeader->NumberOfSymbols)
|
|
|
|
Result = SymbolTable + Index;
|
2011-10-08 03:25:32 +08:00
|
|
|
else
|
|
|
|
return object_error::parse_failed;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code COFFObjectFile::getSymbolName(const coff_symbol *Symbol,
|
2011-10-18 07:53:56 +08:00
|
|
|
StringRef &Res) const {
|
|
|
|
// Check for string table entry. First 4 bytes are 0.
|
2014-01-17 04:11:48 +08:00
|
|
|
if (Symbol->Name.Offset.Zeroes == 0) {
|
|
|
|
uint32_t Offset = Symbol->Name.Offset.Offset;
|
|
|
|
if (error_code EC = getString(Offset, Res))
|
|
|
|
return EC;
|
2011-10-18 07:53:56 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
if (Symbol->Name.ShortName[7] == 0)
|
2011-10-18 07:53:56 +08:00
|
|
|
// Null terminated, let ::strlen figure out the length.
|
2014-01-17 04:11:48 +08:00
|
|
|
Res = StringRef(Symbol->Name.ShortName);
|
2011-10-18 07:53:56 +08:00
|
|
|
else
|
|
|
|
// Not null terminated, use all 8 bytes.
|
2014-01-17 04:11:48 +08:00
|
|
|
Res = StringRef(Symbol->Name.ShortName, 8);
|
2011-10-18 07:53:56 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2012-06-15 09:08:25 +08:00
|
|
|
ArrayRef<uint8_t> COFFObjectFile::getSymbolAuxData(
|
2014-01-17 04:11:48 +08:00
|
|
|
const coff_symbol *Symbol) const {
|
|
|
|
const uint8_t *Aux = NULL;
|
2013-09-28 05:04:00 +08:00
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
if (Symbol->NumberOfAuxSymbols > 0) {
|
2012-06-15 09:08:25 +08:00
|
|
|
// AUX data comes immediately after the symbol in COFF
|
2014-01-17 04:11:48 +08:00
|
|
|
Aux = reinterpret_cast<const uint8_t *>(Symbol + 1);
|
2012-06-15 09:08:25 +08:00
|
|
|
# ifndef NDEBUG
|
2014-01-17 04:11:48 +08:00
|
|
|
// Verify that the Aux symbol points to a valid entry in the symbol table.
|
|
|
|
uintptr_t Offset = uintptr_t(Aux) - uintptr_t(base());
|
|
|
|
if (Offset < COFFHeader->PointerToSymbolTable
|
|
|
|
|| Offset >= COFFHeader->PointerToSymbolTable
|
2013-06-13 03:10:33 +08:00
|
|
|
+ (COFFHeader->NumberOfSymbols * sizeof(coff_symbol)))
|
2012-06-15 09:08:25 +08:00
|
|
|
report_fatal_error("Aux Symbol data was outside of symbol table.");
|
|
|
|
|
2014-01-17 04:11:48 +08:00
|
|
|
assert((Offset - COFFHeader->PointerToSymbolTable) % sizeof(coff_symbol)
|
2012-06-15 09:08:25 +08:00
|
|
|
== 0 && "Aux Symbol data did not point to the beginning of a symbol");
|
|
|
|
# endif
|
2012-06-15 09:15:47 +08:00
|
|
|
}
|
2014-01-18 06:11:27 +08:00
|
|
|
return ArrayRef<uint8_t>(Aux,
|
|
|
|
Symbol->NumberOfAuxSymbols * sizeof(coff_symbol));
|
2012-06-15 09:08:25 +08:00
|
|
|
}
|
|
|
|
|
2012-03-20 04:27:15 +08:00
|
|
|
error_code COFFObjectFile::getSectionName(const coff_section *Sec,
|
|
|
|
StringRef &Res) const {
|
|
|
|
StringRef Name;
|
|
|
|
if (Sec->Name[7] == 0)
|
|
|
|
// Null terminated, let ::strlen figure out the length.
|
|
|
|
Name = Sec->Name;
|
|
|
|
else
|
|
|
|
// Not null terminated, use all 8 bytes.
|
|
|
|
Name = StringRef(Sec->Name, 8);
|
|
|
|
|
|
|
|
// Check for string table entry. First byte is '/'.
|
|
|
|
if (Name[0] == '/') {
|
|
|
|
uint32_t Offset;
|
|
|
|
if (Name.substr(1).getAsInteger(10, Offset))
|
|
|
|
return object_error::parse_failed;
|
2014-01-17 04:11:48 +08:00
|
|
|
if (error_code EC = getString(Offset, Name))
|
|
|
|
return EC;
|
2012-03-20 04:27:15 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
Res = Name;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2012-03-20 04:27:37 +08:00
|
|
|
error_code COFFObjectFile::getSectionContents(const coff_section *Sec,
|
|
|
|
ArrayRef<uint8_t> &Res) const {
|
|
|
|
// The only thing that we need to verify is that the contents is contained
|
|
|
|
// within the file bounds. We don't need to make sure it doesn't cover other
|
|
|
|
// data, as there's nothing that says that is not allowed.
|
|
|
|
uintptr_t ConStart = uintptr_t(base()) + Sec->PointerToRawData;
|
|
|
|
uintptr_t ConEnd = ConStart + Sec->SizeOfRawData;
|
|
|
|
if (ConEnd > uintptr_t(Data->getBufferEnd()))
|
|
|
|
return object_error::parse_failed;
|
|
|
|
Res = ArrayRef<uint8_t>(reinterpret_cast<const unsigned char*>(ConStart),
|
|
|
|
Sec->SizeOfRawData);
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2011-09-09 04:52:17 +08:00
|
|
|
const coff_relocation *COFFObjectFile::toRel(DataRefImpl Rel) const {
|
2011-10-08 03:25:32 +08:00
|
|
|
return reinterpret_cast<const coff_relocation*>(Rel.p);
|
2011-09-09 04:52:17 +08:00
|
|
|
}
|
2014-01-17 04:11:48 +08:00
|
|
|
|
2014-01-30 10:49:50 +08:00
|
|
|
void COFFObjectFile::moveRelocationNext(DataRefImpl &Rel) const {
|
2011-10-08 03:25:32 +08:00
|
|
|
Rel.p = reinterpret_cast<uintptr_t>(
|
|
|
|
reinterpret_cast<const coff_relocation*>(Rel.p) + 1);
|
2011-09-09 04:52:17 +08:00
|
|
|
}
|
2014-01-17 04:11:48 +08:00
|
|
|
|
2011-09-09 04:52:17 +08:00
|
|
|
error_code COFFObjectFile::getRelocationAddress(DataRefImpl Rel,
|
|
|
|
uint64_t &Res) const {
|
2013-04-25 20:28:45 +08:00
|
|
|
report_fatal_error("getRelocationAddress not implemented in COFFObjectFile");
|
2011-11-30 01:40:10 +08:00
|
|
|
}
|
2014-01-17 04:11:48 +08:00
|
|
|
|
2011-11-30 01:40:10 +08:00
|
|
|
error_code COFFObjectFile::getRelocationOffset(DataRefImpl Rel,
|
|
|
|
uint64_t &Res) const {
|
2011-10-08 03:25:32 +08:00
|
|
|
Res = toRel(Rel)->VirtualAddress;
|
2011-09-09 04:52:17 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
2014-01-17 04:11:48 +08:00
|
|
|
|
2013-06-05 09:33:53 +08:00
|
|
|
symbol_iterator COFFObjectFile::getRelocationSymbol(DataRefImpl Rel) const {
|
2011-09-09 04:52:17 +08:00
|
|
|
const coff_relocation* R = toRel(Rel);
|
2014-01-17 04:11:48 +08:00
|
|
|
DataRefImpl Ref;
|
|
|
|
Ref.p = reinterpret_cast<uintptr_t>(SymbolTable + R->SymbolTableIndex);
|
|
|
|
return symbol_iterator(SymbolRef(Ref, this));
|
2011-09-09 04:52:17 +08:00
|
|
|
}
|
2014-01-17 04:11:48 +08:00
|
|
|
|
2011-09-09 04:52:17 +08:00
|
|
|
error_code COFFObjectFile::getRelocationType(DataRefImpl Rel,
|
2011-10-27 01:08:49 +08:00
|
|
|
uint64_t &Res) const {
|
2011-09-09 04:52:17 +08:00
|
|
|
const coff_relocation* R = toRel(Rel);
|
|
|
|
Res = R->Type;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
2011-10-08 03:25:32 +08:00
|
|
|
|
2012-06-15 09:08:25 +08:00
|
|
|
const coff_section *COFFObjectFile::getCOFFSection(section_iterator &It) const {
|
|
|
|
return toSec(It->getRawDataRefImpl());
|
|
|
|
}
|
|
|
|
|
|
|
|
const coff_symbol *COFFObjectFile::getCOFFSymbol(symbol_iterator &It) const {
|
|
|
|
return toSymb(It->getRawDataRefImpl());
|
|
|
|
}
|
|
|
|
|
2012-06-19 03:47:16 +08:00
|
|
|
const coff_relocation *COFFObjectFile::getCOFFRelocation(
|
|
|
|
relocation_iterator &It) const {
|
|
|
|
return toRel(It->getRawDataRefImpl());
|
|
|
|
}
|
|
|
|
|
2011-10-08 03:25:32 +08:00
|
|
|
#define LLVM_COFF_SWITCH_RELOC_TYPE_NAME(enum) \
|
2014-01-17 04:11:48 +08:00
|
|
|
case COFF::enum: Res = #enum; break;
|
2011-10-08 03:25:32 +08:00
|
|
|
|
|
|
|
error_code COFFObjectFile::getRelocationTypeName(DataRefImpl Rel,
|
|
|
|
SmallVectorImpl<char> &Result) const {
|
2014-01-17 04:11:48 +08:00
|
|
|
const coff_relocation *Reloc = toRel(Rel);
|
|
|
|
StringRef Res;
|
2013-06-13 03:10:33 +08:00
|
|
|
switch (COFFHeader->Machine) {
|
2011-10-08 03:25:32 +08:00
|
|
|
case COFF::IMAGE_FILE_MACHINE_AMD64:
|
2014-01-17 04:11:48 +08:00
|
|
|
switch (Reloc->Type) {
|
2011-10-08 03:25:32 +08:00
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ABSOLUTE);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR64);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR32);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_ADDR32NB);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_1);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_2);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_3);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_4);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_REL32_5);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECTION);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECREL);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SECREL7);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_TOKEN);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SREL32);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_PAIR);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_AMD64_SSPAN32);
|
|
|
|
default:
|
2014-01-17 04:11:48 +08:00
|
|
|
Res = "Unknown";
|
2011-10-08 03:25:32 +08:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
case COFF::IMAGE_FILE_MACHINE_I386:
|
2014-01-17 04:11:48 +08:00
|
|
|
switch (Reloc->Type) {
|
2011-10-08 03:25:32 +08:00
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_ABSOLUTE);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR16);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_REL16);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR32);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_DIR32NB);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SEG12);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECTION);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECREL);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_TOKEN);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_SECREL7);
|
|
|
|
LLVM_COFF_SWITCH_RELOC_TYPE_NAME(IMAGE_REL_I386_REL32);
|
|
|
|
default:
|
2014-01-17 04:11:48 +08:00
|
|
|
Res = "Unknown";
|
2011-10-08 03:25:32 +08:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
2014-01-17 04:11:48 +08:00
|
|
|
Res = "Unknown";
|
2011-10-08 03:25:32 +08:00
|
|
|
}
|
2014-01-17 04:11:48 +08:00
|
|
|
Result.append(Res.begin(), Res.end());
|
2011-10-08 03:25:32 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
|
|
|
#undef LLVM_COFF_SWITCH_RELOC_TYPE_NAME
|
|
|
|
|
|
|
|
error_code COFFObjectFile::getRelocationValueString(DataRefImpl Rel,
|
|
|
|
SmallVectorImpl<char> &Result) const {
|
2014-01-17 04:11:48 +08:00
|
|
|
const coff_relocation *Reloc = toRel(Rel);
|
|
|
|
const coff_symbol *Symb = 0;
|
|
|
|
if (error_code EC = getSymbol(Reloc->SymbolTableIndex, Symb)) return EC;
|
|
|
|
DataRefImpl Sym;
|
|
|
|
Sym.p = reinterpret_cast<uintptr_t>(Symb);
|
|
|
|
StringRef SymName;
|
|
|
|
if (error_code EC = getSymbolName(Sym, SymName)) return EC;
|
|
|
|
Result.append(SymName.begin(), SymName.end());
|
2011-10-08 03:25:32 +08:00
|
|
|
return object_error::success;
|
2011-10-08 02:25:37 +08:00
|
|
|
}
|
|
|
|
|
2012-03-01 09:36:50 +08:00
|
|
|
error_code COFFObjectFile::getLibraryNext(DataRefImpl LibData,
|
|
|
|
LibraryRef &Result) const {
|
|
|
|
report_fatal_error("getLibraryNext not implemented in COFFObjectFile");
|
|
|
|
}
|
|
|
|
|
|
|
|
error_code COFFObjectFile::getLibraryPath(DataRefImpl LibData,
|
|
|
|
StringRef &Result) const {
|
|
|
|
report_fatal_error("getLibraryPath not implemented in COFFObjectFile");
|
|
|
|
}
|
|
|
|
|
2013-09-28 05:04:00 +08:00
|
|
|
bool ImportDirectoryEntryRef::
|
|
|
|
operator==(const ImportDirectoryEntryRef &Other) const {
|
2014-01-16 11:13:19 +08:00
|
|
|
return ImportTable == Other.ImportTable && Index == Other.Index;
|
2013-09-28 05:04:00 +08:00
|
|
|
}
|
|
|
|
|
2014-01-30 10:49:50 +08:00
|
|
|
void ImportDirectoryEntryRef::moveNext() {
|
|
|
|
++Index;
|
2013-09-28 05:04:00 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
error_code ImportDirectoryEntryRef::
|
|
|
|
getImportTableEntry(const import_directory_table_entry *&Result) const {
|
2014-01-16 11:13:19 +08:00
|
|
|
Result = ImportTable;
|
2013-09-28 05:04:00 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
|
|
|
error_code ImportDirectoryEntryRef::getName(StringRef &Result) const {
|
|
|
|
uintptr_t IntPtr = 0;
|
2014-01-16 11:13:19 +08:00
|
|
|
if (error_code EC = OwningObject->getRvaPtr(ImportTable->NameRVA, IntPtr))
|
|
|
|
return EC;
|
|
|
|
Result = StringRef(reinterpret_cast<const char *>(IntPtr));
|
2013-09-28 05:04:00 +08:00
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
|
|
|
error_code ImportDirectoryEntryRef::getImportLookupEntry(
|
|
|
|
const import_lookup_table_entry32 *&Result) const {
|
|
|
|
uintptr_t IntPtr = 0;
|
2014-01-16 11:13:19 +08:00
|
|
|
if (error_code EC =
|
|
|
|
OwningObject->getRvaPtr(ImportTable->ImportLookupTableRVA, IntPtr))
|
|
|
|
return EC;
|
2013-09-28 05:04:00 +08:00
|
|
|
Result = reinterpret_cast<const import_lookup_table_entry32 *>(IntPtr);
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-16 15:05:49 +08:00
|
|
|
bool ExportDirectoryEntryRef::
|
|
|
|
operator==(const ExportDirectoryEntryRef &Other) const {
|
|
|
|
return ExportTable == Other.ExportTable && Index == Other.Index;
|
|
|
|
}
|
|
|
|
|
2014-01-30 10:49:50 +08:00
|
|
|
void ExportDirectoryEntryRef::moveNext() {
|
|
|
|
++Index;
|
2014-01-16 15:05:49 +08:00
|
|
|
}
|
|
|
|
|
2014-01-17 04:50:34 +08:00
|
|
|
// Returns the name of the current export symbol. If the symbol is exported only
|
|
|
|
// by ordinal, the empty string is set as a result.
|
|
|
|
error_code ExportDirectoryEntryRef::getDllName(StringRef &Result) const {
|
|
|
|
uintptr_t IntPtr = 0;
|
|
|
|
if (error_code EC = OwningObject->getRvaPtr(ExportTable->NameRVA, IntPtr))
|
|
|
|
return EC;
|
|
|
|
Result = StringRef(reinterpret_cast<const char *>(IntPtr));
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-18 06:02:24 +08:00
|
|
|
// Returns the starting ordinal number.
|
|
|
|
error_code ExportDirectoryEntryRef::getOrdinalBase(uint32_t &Result) const {
|
|
|
|
Result = ExportTable->OrdinalBase;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-16 15:05:49 +08:00
|
|
|
// Returns the export ordinal of the current export symbol.
|
|
|
|
error_code ExportDirectoryEntryRef::getOrdinal(uint32_t &Result) const {
|
|
|
|
Result = ExportTable->OrdinalBase + Index;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Returns the address of the current export symbol.
|
|
|
|
error_code ExportDirectoryEntryRef::getExportRVA(uint32_t &Result) const {
|
|
|
|
uintptr_t IntPtr = 0;
|
|
|
|
if (error_code EC = OwningObject->getRvaPtr(
|
|
|
|
ExportTable->ExportAddressTableRVA, IntPtr))
|
|
|
|
return EC;
|
2014-01-18 06:11:27 +08:00
|
|
|
const export_address_table_entry *entry =
|
|
|
|
reinterpret_cast<const export_address_table_entry *>(IntPtr);
|
2014-01-16 15:05:49 +08:00
|
|
|
Result = entry[Index].ExportRVA;
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Returns the name of the current export symbol. If the symbol is exported only
|
|
|
|
// by ordinal, the empty string is set as a result.
|
2014-01-17 04:50:34 +08:00
|
|
|
error_code ExportDirectoryEntryRef::getSymbolName(StringRef &Result) const {
|
2014-01-16 15:05:49 +08:00
|
|
|
uintptr_t IntPtr = 0;
|
|
|
|
if (error_code EC = OwningObject->getRvaPtr(
|
|
|
|
ExportTable->OrdinalTableRVA, IntPtr))
|
|
|
|
return EC;
|
|
|
|
const ulittle16_t *Start = reinterpret_cast<const ulittle16_t *>(IntPtr);
|
|
|
|
|
|
|
|
uint32_t NumEntries = ExportTable->NumberOfNamePointers;
|
|
|
|
int Offset = 0;
|
|
|
|
for (const ulittle16_t *I = Start, *E = Start + NumEntries;
|
|
|
|
I < E; ++I, ++Offset) {
|
|
|
|
if (*I != Index)
|
|
|
|
continue;
|
|
|
|
if (error_code EC = OwningObject->getRvaPtr(
|
|
|
|
ExportTable->NamePointerRVA, IntPtr))
|
|
|
|
return EC;
|
|
|
|
const ulittle32_t *NamePtr = reinterpret_cast<const ulittle32_t *>(IntPtr);
|
|
|
|
if (error_code EC = OwningObject->getRvaPtr(NamePtr[Offset], IntPtr))
|
|
|
|
return EC;
|
|
|
|
Result = StringRef(reinterpret_cast<const char *>(IntPtr));
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
Result = "";
|
|
|
|
return object_error::success;
|
|
|
|
}
|
|
|
|
|
2014-01-25 05:32:21 +08:00
|
|
|
ErrorOr<ObjectFile *> ObjectFile::createCOFFObjectFile(MemoryBuffer *Object,
|
|
|
|
bool BufferOwned) {
|
2014-01-17 04:11:48 +08:00
|
|
|
error_code EC;
|
2014-01-25 05:32:21 +08:00
|
|
|
OwningPtr<COFFObjectFile> Ret(new COFFObjectFile(Object, EC, BufferOwned));
|
2014-01-22 07:06:54 +08:00
|
|
|
if (EC)
|
|
|
|
return EC;
|
|
|
|
return Ret.take();
|
2014-01-17 04:30:36 +08:00
|
|
|
}
|