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Change relocation API to be per section. This time without breaking GCC.

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llvm-svn: 141385
This commit is contained in:
Michael J. Spencer 2011-10-07 19:25:32 +00:00
parent d3c2b772ee
commit 34d76cf95b
8 changed files with 561 additions and 203 deletions
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8
include/llvm-c/Object.h
View File

@ -59,14 +59,14 @@ namespace llvm {
return reinterpret_cast<LLVMObjectFileRef>(const_cast<ObjectFile*>(OF));
}
inline ObjectFile::section_iterator *unwrap(LLVMSectionIteratorRef SI) {
return reinterpret_cast<ObjectFile::section_iterator*>(SI);
inline section_iterator *unwrap(LLVMSectionIteratorRef SI) {
return reinterpret_cast<section_iterator*>(SI);
}
inline LLVMSectionIteratorRef
wrap(const ObjectFile::section_iterator *SI) {
wrap(const section_iterator *SI) {
return reinterpret_cast<LLVMSectionIteratorRef>
(const_cast<ObjectFile::section_iterator*>(SI));
(const_cast<section_iterator*>(SI));
}
}
}

11
include/llvm/Object/COFF.h
View File

@ -84,6 +84,8 @@ private:
error_code getSection(int32_t index,
const coff_section *&Res) const;
error_code getString(uint32_t offset, StringRef &Res) const;
error_code getSymbol(uint32_t index,
const coff_symbol *&Res) const;
const coff_symbol *toSymb(DataRefImpl Symb) const;
const coff_section *toSec(DataRefImpl Sec) const;
@ -110,6 +112,8 @@ protected:
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
bool &Result) const;
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
virtual error_code getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const;
@ -119,16 +123,19 @@ protected:
SymbolRef &Res) const;
virtual error_code getRelocationType(DataRefImpl Rel,
uint32_t &Res) const;
virtual error_code getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const;
virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Res) const;
virtual error_code getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const;
public:
COFFObjectFile(MemoryBuffer *Object, error_code &ec);
virtual symbol_iterator begin_symbols() const;
virtual symbol_iterator end_symbols() const;
virtual section_iterator begin_sections() const;
virtual section_iterator end_sections() const;
virtual relocation_iterator begin_relocations() const;
virtual relocation_iterator end_relocations() const;
virtual uint8_t getBytesInAddress() const;
virtual StringRef getFileFormatName() const;

119
include/llvm/Object/ObjectFile.h
View File

@ -27,12 +27,51 @@ namespace object {
class ObjectFile;
union DataRefImpl {
struct {
// ELF needs this for relocations. This entire union should probably be a
// char[max(8, sizeof(uintptr_t))] and require the impl to cast.
uint16_t a, b;
uint32_t c;
} w;
struct {
uint32_t a, b;
} d;
uintptr_t p;
};
template<class content_type>
class content_iterator {
content_type Current;
public:
content_iterator(content_type symb)
: Current(symb) {}
const content_type* operator->() const {
return &Current;
}
const content_type &operator*() const {
return Current;
}
bool operator==(const content_iterator &other) const {
return Current == other.Current;
}
bool operator!=(const content_iterator &other) const {
return !(*this == other);
}
content_iterator& increment(error_code &err) {
content_type next;
if (error_code ec = Current.getNext(next))
err = ec;
else
Current = next;
return *this;
}
};
static bool operator ==(const DataRefImpl &a, const DataRefImpl &b) {
// Check bitwise identical. This is the only legal way to compare a union w/o
// knowing which member is in use.
@ -82,6 +121,7 @@ public:
/// such as library functions
error_code isGlobal(bool &Result) const;
};
typedef content_iterator<SymbolRef> symbol_iterator;
/// RelocationRef - This is a value type class that represents a single
/// relocation in the list of relocations in the object file.
@ -103,8 +143,20 @@ public:
error_code getAddress(uint64_t &Result) const;
error_code getSymbol(SymbolRef &Result) const;
error_code getType(uint32_t &Result) const;
/// @brief Get a string that represents the type of this relocation.
///
/// This is for display purposes only.
error_code getTypeName(SmallVectorImpl<char> &Result) const;
error_code getAdditionalInfo(int64_t &Result) const;
/// @brief Get a string that represents the calculation of the value of this
/// relocation.
///
/// This is for display purposes only.
error_code getValueString(SmallVectorImpl<char> &Result) const;
};
typedef content_iterator<RelocationRef> relocation_iterator;
/// SectionRef - This is a value type class that represents a single section in
/// the list of sections in the object file.
@ -135,7 +187,11 @@ public:
error_code isBSS(bool &Result) const;
error_code containsSymbol(SymbolRef S, bool &Result) const;
relocation_iterator begin_relocations() const;
relocation_iterator end_relocations() const;
};
typedef content_iterator<SectionRef> section_iterator;
const uint64_t UnknownAddressOrSize = ~0ULL;
@ -185,6 +241,8 @@ protected:
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const = 0;
virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
bool &Result) const = 0;
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const = 0;
virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const = 0;
// Same as above for RelocationRef.
@ -197,46 +255,14 @@ protected:
SymbolRef &Res) const = 0;
virtual error_code getRelocationType(DataRefImpl Rel,
uint32_t &Res) const = 0;
virtual error_code getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const = 0;
virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Res) const = 0;
virtual error_code getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const = 0;
public:
template<class content_type>
class content_iterator {
content_type Current;
public:
content_iterator(content_type symb)
: Current(symb) {}
const content_type* operator->() const {
return &Current;
}
const content_type &operator*() const {
return Current;
}
bool operator==(const content_iterator &other) const {
return Current == other.Current;
}
bool operator!=(const content_iterator &other) const {
return !(*this == other);
}
content_iterator& increment(error_code &err) {
content_type next;
if (error_code ec = Current.getNext(next))
err = ec;
else
Current = next;
return *this;
}
};
typedef content_iterator<SymbolRef> symbol_iterator;
typedef content_iterator<SectionRef> section_iterator;
typedef content_iterator<RelocationRef> relocation_iterator;
virtual symbol_iterator begin_symbols() const = 0;
virtual symbol_iterator end_symbols() const = 0;
@ -244,9 +270,6 @@ public:
virtual section_iterator begin_sections() const = 0;
virtual section_iterator end_sections() const = 0;
virtual relocation_iterator begin_relocations() const = 0;
virtual relocation_iterator end_relocations() const = 0;
/// @brief The number of bytes used to represent an address in this object
/// file format.
virtual uint8_t getBytesInAddress() const = 0;
@ -366,6 +389,14 @@ inline error_code SectionRef::containsSymbol(SymbolRef S, bool &Result) const {
Result);
}
inline relocation_iterator SectionRef::begin_relocations() const {
return OwningObject->getSectionRelBegin(SectionPimpl);
}
inline relocation_iterator SectionRef::end_relocations() const {
return OwningObject->getSectionRelEnd(SectionPimpl);
}
/// RelocationRef
inline RelocationRef::RelocationRef(DataRefImpl RelocationP,
@ -393,10 +424,20 @@ inline error_code RelocationRef::getType(uint32_t &Result) const {
return OwningObject->getRelocationType(RelocationPimpl, Result);
}
inline error_code RelocationRef::getTypeName(SmallVectorImpl<char> &Result)
const {
return OwningObject->getRelocationTypeName(RelocationPimpl, Result);
}
inline error_code RelocationRef::getAdditionalInfo(int64_t &Result) const {
return OwningObject->getRelocationAdditionalInfo(RelocationPimpl, Result);
}
inline error_code RelocationRef::getValueString(SmallVectorImpl<char> &Result)
const {
return OwningObject->getRelocationValueString(RelocationPimpl, Result);
}
} // end namespace object
} // end namespace llvm

158
lib/Object/COFFObjectFile.cpp
View File

@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/Object/COFF.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Triple.h"
@ -364,6 +365,33 @@ error_code COFFObjectFile::sectionContainsSymbol(DataRefImpl Sec,
return object_error::success;
}
relocation_iterator COFFObjectFile::getSectionRelBegin(DataRefImpl Sec) const {
const coff_section *sec = toSec(Sec);
DataRefImpl ret;
std::memset(&ret, 0, sizeof(ret));
if (sec->NumberOfRelocations == 0)
ret.p = 0;
else
ret.p = reinterpret_cast<uintptr_t>(base() + sec->PointerToRelocations);
return relocation_iterator(RelocationRef(ret, this));
}
relocation_iterator COFFObjectFile::getSectionRelEnd(DataRefImpl Sec) const {
const coff_section *sec = toSec(Sec);
DataRefImpl ret;
std::memset(&ret, 0, sizeof(ret));
if (sec->NumberOfRelocations == 0)
ret.p = 0;
else
ret.p = reinterpret_cast<uintptr_t>(
reinterpret_cast<const coff_relocation*>(
base() + sec->PointerToRelocations)
+ sec->NumberOfRelocations);
return relocation_iterator(RelocationRef(ret, this));
}
COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &ec)
: ObjectFile(Binary::isCOFF, Object, ec) {
// Check that we at least have enough room for a header.
@ -427,14 +455,14 @@ COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &ec)
ec = object_error::success;
}
ObjectFile::symbol_iterator COFFObjectFile::begin_symbols() const {
symbol_iterator COFFObjectFile::begin_symbols() const {
DataRefImpl ret;
std::memset(&ret, 0, sizeof(DataRefImpl));
ret.p = reinterpret_cast<intptr_t>(SymbolTable);
return symbol_iterator(SymbolRef(ret, this));
}
ObjectFile::symbol_iterator COFFObjectFile::end_symbols() const {
symbol_iterator COFFObjectFile::end_symbols() const {
// The symbol table ends where the string table begins.
DataRefImpl ret;
std::memset(&ret, 0, sizeof(DataRefImpl));
@ -442,14 +470,14 @@ ObjectFile::symbol_iterator COFFObjectFile::end_symbols() const {
return symbol_iterator(SymbolRef(ret, this));
}
ObjectFile::section_iterator COFFObjectFile::begin_sections() const {
section_iterator COFFObjectFile::begin_sections() const {
DataRefImpl ret;
std::memset(&ret, 0, sizeof(DataRefImpl));
ret.p = reinterpret_cast<intptr_t>(SectionTable);
return section_iterator(SectionRef(ret, this));
}
ObjectFile::section_iterator COFFObjectFile::end_sections() const {
section_iterator COFFObjectFile::end_sections() const {
DataRefImpl ret;
std::memset(&ret, 0, sizeof(DataRefImpl));
ret.p = reinterpret_cast<intptr_t>(SectionTable + Header->NumberOfSections);
@ -508,42 +536,28 @@ error_code COFFObjectFile::getString(uint32_t offset,
return object_error::success;
}
error_code COFFObjectFile::getSymbol(uint32_t index,
const coff_symbol *&Result) const {
if (index > 0 && index < Header->NumberOfSymbols)
Result = SymbolTable + index;
else
return object_error::parse_failed;
return object_error::success;
}
const coff_relocation *COFFObjectFile::toRel(DataRefImpl Rel) const {
assert(Rel.d.b < Header->NumberOfSections && "Section index out of range!");
const coff_section *Sect = NULL;
getSection(Rel.d.b, Sect);
assert(Rel.d.a < Sect->NumberOfRelocations && "Relocation index out of range!");
return
reinterpret_cast<const coff_relocation*>(base() +
Sect->PointerToRelocations) +
Rel.d.a;
return reinterpret_cast<const coff_relocation*>(Rel.p);
}
error_code COFFObjectFile::getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const {
const coff_section *Sect = NULL;
if (error_code ec = getSection(Rel.d.b, Sect))
return ec;
if (++Rel.d.a >= Sect->NumberOfRelocations) {
Rel.d.a = 0;
while (++Rel.d.b < Header->NumberOfSections) {
const coff_section *Sect = NULL;
getSection(Rel.d.b, Sect);
if (Sect->NumberOfRelocations > 0)
break;
}
}
Rel.p = reinterpret_cast<uintptr_t>(
reinterpret_cast<const coff_relocation*>(Rel.p) + 1);
Res = RelocationRef(Rel, this);
return object_error::success;
}
error_code COFFObjectFile::getRelocationAddress(DataRefImpl Rel,
uint64_t &Res) const {
const coff_section *Sect = NULL;
if (error_code ec = getSection(Rel.d.b, Sect))
return ec;
const coff_relocation* R = toRel(Rel);
Res = reinterpret_cast<uintptr_t>(base() +
Sect->PointerToRawData +
R->VirtualAddress);
Res = toRel(Rel)->VirtualAddress;
return object_error::success;
}
error_code COFFObjectFile::getRelocationSymbol(DataRefImpl Rel,
@ -560,24 +574,82 @@ error_code COFFObjectFile::getRelocationType(DataRefImpl Rel,
Res = R->Type;
return object_error::success;
}
#define LLVM_COFF_SWITCH_RELOC_TYPE_NAME(enum) \
case COFF::enum: res = #enum; break;
error_code COFFObjectFile::getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
const coff_relocation *reloc = toRel(Rel);
StringRef res;
switch (Header->Machine) {
case COFF::IMAGE_FILE_MACHINE_AMD64:
switch (reloc->Type) {
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:
res = "Unknown";
}
break;
case COFF::IMAGE_FILE_MACHINE_I386:
switch (reloc->Type) {
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:
res = "Unknown";
}
break;
default:
res = "Unknown";
}
Result.append(res.begin(), res.end());
return object_error::success;
}
#undef LLVM_COFF_SWITCH_RELOC_TYPE_NAME
error_code COFFObjectFile::getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Res) const {
Res = 0;
return object_error::success;
}
ObjectFile::relocation_iterator COFFObjectFile::begin_relocations() const {
DataRefImpl ret;
ret.d.a = 0;
ret.d.b = 1;
return relocation_iterator(RelocationRef(ret, this));
error_code COFFObjectFile::getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
const coff_relocation *reloc = toRel(Rel);
const coff_symbol *symb;
if (error_code ec = getSymbol(reloc->SymbolTableIndex, symb)) return ec;
DataRefImpl sym;
::memset(&sym, 0, sizeof(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());
return object_error::success;
}
ObjectFile::relocation_iterator COFFObjectFile::end_relocations() const {
DataRefImpl ret;
ret.d.a = 0;
ret.d.b = Header->NumberOfSections;
return relocation_iterator(RelocationRef(ret, this));
}
namespace llvm {

378
lib/Object/ELFObjectFile.cpp
View File

@ -20,6 +20,8 @@
#include "llvm/Support/Endian.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <limits>
#include <utility>
@ -286,6 +288,7 @@ class ELFObjectFile : public ObjectFile {
typedef SmallVector<const Elf_Shdr*, 1> Sections_t;
typedef DenseMap<unsigned, unsigned> IndexMap_t;
typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t;
const Elf_Ehdr *Header;
const Elf_Shdr *SectionHeaderTable;
@ -293,12 +296,22 @@ class ELFObjectFile : public ObjectFile {
const Elf_Shdr *dot_strtab_sec; // Symbol header string table.
Sections_t SymbolTableSections;
IndexMap_t SymbolTableSectionsIndexMap;
Sections_t RelocationTableSections;
/// @brief Map sections to an array of relocation sections that reference
/// them sorted by section index.
RelocMap_t SectionRelocMap;
/// @brief Get the relocation section that contains \a Rel.
const Elf_Shdr *getRelSection(DataRefImpl Rel) const {
return getSection(Rel.w.b);
}
void validateSymbol(DataRefImpl Symb) const;
bool isRelocationHasAddend(DataRefImpl Rel) const;
template<typename T>
const T *getEntry(DataRefImpl Entry, Sections_t Sections) const;
const T *getEntry(uint16_t Section, uint32_t Entry) const;
template<typename T>
const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const;
const Elf_Sym *getSymbol(DataRefImpl Symb) const;
const Elf_Shdr *getSection(DataRefImpl index) const;
const Elf_Shdr *getSection(uint16_t index) const;
@ -306,6 +319,7 @@ class ELFObjectFile : public ObjectFile {
const Elf_Rela *getRela(DataRefImpl Rela) const;
const char *getString(uint16_t section, uint32_t offset) const;
const char *getString(const Elf_Shdr *section, uint32_t offset) const;
error_code getSymbolName(const Elf_Sym *Symb, StringRef &Res) const;
protected:
virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
@ -328,6 +342,8 @@ protected:
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
bool &Result) const;
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
virtual error_code getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const;
@ -337,8 +353,12 @@ protected:
SymbolRef &Res) const;
virtual error_code getRelocationType(DataRefImpl Rel,
uint32_t &Res) const;
virtual error_code getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const;
virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Res) const;
virtual error_code getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const;
public:
ELFObjectFile(MemoryBuffer *Object, error_code &ec);
@ -346,8 +366,6 @@ public:
virtual symbol_iterator end_symbols() const;
virtual section_iterator begin_sections() const;
virtual section_iterator end_sections() const;
virtual relocation_iterator begin_relocations() const;
virtual relocation_iterator end_relocations() const;
virtual uint8_t getBytesInAddress() const;
virtual StringRef getFileFormatName() const;
@ -404,18 +422,7 @@ error_code ELFObjectFile<target_endianness, is64Bits>
StringRef &Result) const {
validateSymbol(Symb);
const Elf_Sym *symb = getSymbol(Symb);
if (symb->st_name == 0) {
const Elf_Shdr *section = getSection(symb->st_shndx);
if (!section)
Result = "";
else
Result = getString(dot_shstrtab_sec, section->sh_name);
return object_error::success;
}
// Use the default symbol table name section.
Result = getString(dot_strtab_sec, symb->st_name);
return object_error::success;
return getSymbolName(symb, Result);
}
template<support::endianness target_endianness, bool is64Bits>
@ -712,24 +719,65 @@ error_code ELFObjectFile<target_endianness, is64Bits>
return object_error::success;
}
template<support::endianness target_endianness, bool is64Bits>
relocation_iterator ELFObjectFile<target_endianness, is64Bits>
::getSectionRelBegin(DataRefImpl Sec) const {
DataRefImpl RelData;
memset(&RelData, 0, sizeof(RelData));
const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
if (sec != 0 && ittr != SectionRelocMap.end()) {
RelData.w.a = getSection(ittr->second[0])->sh_link;
RelData.w.b = ittr->second[0];
RelData.w.c = 0;
}
return relocation_iterator(RelocationRef(RelData, this));
}
template<support::endianness target_endianness, bool is64Bits>
relocation_iterator ELFObjectFile<target_endianness, is64Bits>
::getSectionRelEnd(DataRefImpl Sec) const {
DataRefImpl RelData;
memset(&RelData, 0, sizeof(RelData));
const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p);
typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec);
if (sec != 0 && ittr != SectionRelocMap.end()) {
// Get the index of the last relocation section for this section.
std::size_t relocsecindex = ittr->second[ittr->second.size() - 1];
const Elf_Shdr *relocsec = getSection(relocsecindex);
RelData.w.a = relocsec->sh_link;
RelData.w.b = relocsecindex;
RelData.w.c = relocsec->sh_size / relocsec->sh_entsize;
}
return relocation_iterator(RelocationRef(RelData, this));
}
// Relocations
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
::getRelocationNext(DataRefImpl Rel,
RelocationRef &Result) const {
const Elf_Shdr *RelocationTableSection = RelocationTableSections[Rel.d.b];
++Rel.w.c;
const Elf_Shdr *relocsec = getSection(Rel.w.b);
if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) {
// We have reached the end of the relocations for this section. See if there
// is another relocation section.
typename RelocMap_t::mapped_type &relocseclist =
SectionRelocMap.lookup(getSection(Rel.w.a));
// Check to see if we are at the end of this relocation table.
if (++Rel.d.a >= RelocationTableSection->getEntityCount()) {
// We are at the end. If there are other relocation tables, jump to them.
Rel.d.a = 0;
// Otherwise return the terminator.
if (++Rel.d.b >= SymbolTableSections.size()) {
Rel.d.a = std::numeric_limits<uint32_t>::max();
Rel.d.b = std::numeric_limits<uint32_t>::max();
// Do a binary search for the current reloc section index (which must be
// present). Then get the next one.
typename RelocMap_t::mapped_type::const_iterator loc =
std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b);
++loc;
// If there is no next one, don't do anything. The ++Rel.w.c above sets Rel
// to the end iterator.
if (loc != relocseclist.end()) {
Rel.w.b = *loc;
Rel.w.a = 0;
}
}
Result = RelocationRef(Rel, this);
return object_error::success;
}
@ -739,7 +787,7 @@ error_code ELFObjectFile<target_endianness, is64Bits>
::getRelocationSymbol(DataRefImpl Rel,
SymbolRef &Result) const {
uint32_t symbolIdx;
const Elf_Shdr *sec = RelocationTableSections[Rel.d.b];
const Elf_Shdr *sec = getSection(Rel.w.b);
switch (sec->sh_type) {
default :
report_fatal_error("Invalid section type in Rel!");
@ -767,7 +815,7 @@ error_code ELFObjectFile<target_endianness, is64Bits>
::getRelocationAddress(DataRefImpl Rel,
uint64_t &Result) const {
uint64_t offset;
const Elf_Shdr *sec = RelocationTableSections[Rel.d.b];
const Elf_Shdr *sec = getSection(Rel.w.b);
switch (sec->sh_type) {
default :
report_fatal_error("Invalid section type in Rel!");
@ -781,8 +829,7 @@ error_code ELFObjectFile<target_endianness, is64Bits>
}
}
const Elf_Shdr *secAddr = getSection(sec->sh_info);
Result = offset + reinterpret_cast<uintptr_t>(base() + secAddr->sh_offset);
Result = offset;
return object_error::success;
}
@ -790,7 +837,7 @@ template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
::getRelocationType(DataRefImpl Rel,
uint32_t &Result) const {
const Elf_Shdr *sec = RelocationTableSections[Rel.d.b];
const Elf_Shdr *sec = getSection(Rel.w.b);
switch (sec->sh_type) {
default :
report_fatal_error("Invalid section type in Rel!");
@ -806,11 +853,127 @@ error_code ELFObjectFile<target_endianness, is64Bits>
return object_error::success;
}
#define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \
case ELF::enum: res = #enum; break;
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
::getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
const Elf_Shdr *sec = getSection(Rel.w.b);
uint8_t type;
StringRef res;
switch (sec->sh_type) {
default :
return object_error::parse_failed;
case ELF::SHT_REL : {
type = getRel(Rel)->getType();
break;
}
case ELF::SHT_RELA : {
type = getRela(Rel)->getType();
break;
}
}
switch (Header->e_machine) {
case ELF::EM_X86_64:
switch (type) {
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC);
default:
res = "Unknown";
}
break;
case ELF::EM_386:
switch (type) {
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC);
LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE);
default:
res = "Unknown";
}
break;
default:
res = "Unknown";
}
Result.append(res.begin(), res.end());
return object_error::success;
}
#undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
::getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Result) const {
const Elf_Shdr *sec = RelocationTableSections[Rel.d.b];
const Elf_Shdr *sec = getSection(Rel.w.b);
switch (sec->sh_type) {
default :
report_fatal_error("Invalid section type in Rel!");
@ -825,7 +988,60 @@ error_code ELFObjectFile<target_endianness, is64Bits>
}
}
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
::getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
const Elf_Shdr *sec = getSection(Rel.w.b);
uint8_t type;
StringRef res;
int64_t addend = 0;
uint16_t symbol_index = 0;
switch (sec->sh_type) {
default :
return object_error::parse_failed;
case ELF::SHT_REL : {
type = getRel(Rel)->getType();
symbol_index = getRel(Rel)->getSymbol();
// TODO: Read implicit addend from section data.
break;
}
case ELF::SHT_RELA : {
type = getRela(Rel)->getType();
symbol_index = getRela(Rel)->getSymbol();
addend = getRela(Rel)->r_addend;
break;
}
}
const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index);
StringRef symname;
if (error_code ec = getSymbolName(symb, symname))
return ec;
switch (Header->e_machine) {
case ELF::EM_X86_64:
switch (type) {
case ELF::R_X86_64_32S:
res = symname;
break;
case ELF::R_X86_64_PC32: {
std::string fmtbuf;
raw_string_ostream fmt(fmtbuf);
fmt << symname << (addend < 0 ? "" : "+") << addend << "-P";
fmt.flush();
Result.append(fmtbuf.begin(), fmtbuf.end());
}
break;
default:
res = "Unknown";
}
break;
default:
res = "Unknown";
}
if (Result.empty())
Result.append(res.begin(), res.end());
return object_error::success;
}
template<support::endianness target_endianness, bool is64Bits>
ELFObjectFile<target_endianness, is64Bits>::ELFObjectFile(MemoryBuffer *Object
@ -849,19 +1065,24 @@ ELFObjectFile<target_endianness, is64Bits>::ELFObjectFile(MemoryBuffer *Object
// To find the symbol tables we walk the section table to find SHT_STMTAB.
const Elf_Shdr* sh =
reinterpret_cast<const Elf_Shdr*>(SectionHeaderTable);
const Elf_Shdr* sh = reinterpret_cast<const Elf_Shdr*>(SectionHeaderTable);
for (unsigned i = 0; i < Header->e_shnum; ++i) {
if (sh->sh_type == ELF::SHT_SYMTAB) {
SymbolTableSectionsIndexMap[i] = SymbolTableSections.size();
SymbolTableSections.push_back(sh);
}
if (sh->sh_type == ELF::SHT_REL || sh->sh_type == ELF::SHT_RELA) {
RelocationTableSections.push_back(sh);
SectionRelocMap[getSection(sh->sh_link)].push_back(i);
}
++sh;
}
// Sort section relocation lists by index.
for (typename RelocMap_t::iterator i = SectionRelocMap.begin(),
e = SectionRelocMap.end(); i != e; ++i) {
std::sort(i->second.begin(), i->second.end());
}
// Get string table sections.
dot_shstrtab_sec = getSection(Header->e_shstrndx);
if (dot_shstrtab_sec) {
@ -894,8 +1115,8 @@ ELFObjectFile<target_endianness, is64Bits>::ELFObjectFile(MemoryBuffer *Object
}
template<support::endianness target_endianness, bool is64Bits>
ObjectFile::symbol_iterator ELFObjectFile<target_endianness, is64Bits>
::begin_symbols() const {
symbol_iterator ELFObjectFile<target_endianness, is64Bits>
::begin_symbols() const {
DataRefImpl SymbolData;
memset(&SymbolData, 0, sizeof(SymbolData));
if (SymbolTableSections.size() == 0) {
@ -909,8 +1130,8 @@ ObjectFile::symbol_iterator ELFObjectFile<target_endianness, is64Bits>
}
template<support::endianness target_endianness, bool is64Bits>
ObjectFile::symbol_iterator ELFObjectFile<target_endianness, is64Bits>
::end_symbols() const {
symbol_iterator ELFObjectFile<target_endianness, is64Bits>
::end_symbols() const {
DataRefImpl SymbolData;
memset(&SymbolData, 0, sizeof(SymbolData));
SymbolData.d.a = std::numeric_limits<uint32_t>::max();
@ -919,8 +1140,8 @@ ObjectFile::symbol_iterator ELFObjectFile<target_endianness, is64Bits>
}
template<support::endianness target_endianness, bool is64Bits>
ObjectFile::section_iterator ELFObjectFile<target_endianness, is64Bits>
::begin_sections() const {
section_iterator ELFObjectFile<target_endianness, is64Bits>
::begin_sections() const {
DataRefImpl ret;
memset(&ret, 0, sizeof(DataRefImpl));
ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff);
@ -928,8 +1149,8 @@ ObjectFile::section_iterator ELFObjectFile<target_endianness, is64Bits>
}
template<support::endianness target_endianness, bool is64Bits>
ObjectFile::section_iterator ELFObjectFile<target_endianness, is64Bits>
::end_sections() const {
section_iterator ELFObjectFile<target_endianness, is64Bits>
::end_sections() const {
DataRefImpl ret;
memset(&ret, 0, sizeof(DataRefImpl));
ret.p = reinterpret_cast<intptr_t>(base()
@ -938,31 +1159,6 @@ ObjectFile::section_iterator ELFObjectFile<target_endianness, is64Bits>
return section_iterator(SectionRef(ret, this));
}
template<support::endianness target_endianness, bool is64Bits>
ObjectFile::relocation_iterator ELFObjectFile<target_endianness, is64Bits>
::begin_relocations() const {
DataRefImpl RelData;
memset(&RelData, 0, sizeof(RelData));
if (RelocationTableSections.size() == 0) {
RelData.d.a = std::numeric_limits<uint32_t>::max();
RelData.d.b = std::numeric_limits<uint32_t>::max();
} else {
RelData.d.a = 0;
RelData.d.b = 0;
}
return relocation_iterator(RelocationRef(RelData, this));
}
template<support::endianness target_endianness, bool is64Bits>
ObjectFile::relocation_iterator ELFObjectFile<target_endianness, is64Bits>
::end_relocations() const {
DataRefImpl RelData;
memset(&RelData, 0, sizeof(RelData));
RelData.d.a = std::numeric_limits<uint32_t>::max();
RelData.d.b = std::numeric_limits<uint32_t>::max();
return relocation_iterator(RelocationRef(RelData, this));
}
template<support::endianness target_endianness, bool is64Bits>
uint8_t ELFObjectFile<target_endianness, is64Bits>::getBytesInAddress() const {
return is64Bits ? 8 : 4;
@ -1012,41 +1208,49 @@ unsigned ELFObjectFile<target_endianness, is64Bits>::getArch() const {
}
}
template<support::endianness target_endianness, bool is64Bits>
template<typename T>
inline const T *
ELFObjectFile<target_endianness, is64Bits>::getEntry(DataRefImpl Entry,
Sections_t Sections) const {
const Elf_Shdr *sec = Sections[Entry.d.b];
ELFObjectFile<target_endianness, is64Bits>::getEntry(uint16_t Section,
uint32_t Entry) const {
return getEntry<T>(getSection(Section), Entry);
}
template<support::endianness target_endianness, bool is64Bits>
template<typename T>
inline const T *
ELFObjectFile<target_endianness, is64Bits>::getEntry(const Elf_Shdr * Section,
uint32_t Entry) const {
return reinterpret_cast<const T *>(
base()
+ sec->sh_offset
+ (Entry.d.a * sec->sh_entsize));
+ Section->sh_offset
+ (Entry * Section->sh_entsize));
}
template<support::endianness target_endianness, bool is64Bits>
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Sym *
ELFObjectFile<target_endianness, is64Bits>::getSymbol(DataRefImpl Symb) const {
return getEntry<Elf_Sym>(Symb, SymbolTableSections);
return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a);
}
template<support::endianness target_endianness, bool is64Bits>
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Rel *
ELFObjectFile<target_endianness, is64Bits>::getRel(DataRefImpl Rel) const {
return getEntry<Elf_Rel>(Rel, RelocationTableSections);
return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c);
}
template<support::endianness target_endianness, bool is64Bits>
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Rela *
ELFObjectFile<target_endianness, is64Bits>::getRela(DataRefImpl Rela) const {
return getEntry<Elf_Rela>(Rela, RelocationTableSections);
return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c);
}
template<support::endianness target_endianness, bool is64Bits>
const typename ELFObjectFile<target_endianness, is64Bits>::Elf_Shdr *
ELFObjectFile<target_endianness, is64Bits>::getSection(DataRefImpl Symb) const {
const Elf_Shdr *sec = getSection(Symb.d.b);
if (sec->sh_type != ELF::SHT_SYMTAB)
if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM)
// FIXME: Proper error handling.
report_fatal_error("Invalid symbol table section!");
return sec;
@ -1084,6 +1288,24 @@ const char *ELFObjectFile<target_endianness, is64Bits>
return (const char *)base() + section->sh_offset + offset;
}
template<support::endianness target_endianness, bool is64Bits>
error_code ELFObjectFile<target_endianness, is64Bits>
::getSymbolName(const Elf_Sym *symb,
StringRef &Result) const {
if (symb->st_name == 0) {
const Elf_Shdr *section = getSection(symb->st_shndx);
if (!section)
Result = "";
else
Result = getString(dot_shstrtab_sec, section->sh_name);
return object_error::success;
}
// Use the default symbol table name section.
Result = getString(dot_strtab_sec, symb->st_name);
return object_error::success;
}
// EI_CLASS, EI_DATA.
static std::pair<unsigned char, unsigned char>
getElfArchType(MemoryBuffer *Object) {

82
lib/Object/MachOObjectFile.cpp
View File

@ -39,8 +39,6 @@ public:
virtual symbol_iterator end_symbols() const;
virtual section_iterator begin_sections() const;
virtual section_iterator end_sections() const;
virtual relocation_iterator begin_relocations() const;
virtual relocation_iterator end_relocations() const;
virtual uint8_t getBytesInAddress() const;
virtual StringRef getFileFormatName() const;
@ -67,6 +65,8 @@ protected:
virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const;
virtual error_code sectionContainsSymbol(DataRefImpl DRI, DataRefImpl S,
bool &Result) const;
virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const;
virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const;
virtual error_code getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const;
@ -76,8 +76,13 @@ protected:
SymbolRef &Res) const;
virtual error_code getRelocationType(DataRefImpl Rel,
uint32_t &Res) const;
virtual error_code getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const;
virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Res) const;
virtual error_code getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const;
private:
MachOObject *MachOObj;
mutable uint32_t RegisteredStringTable;
@ -96,6 +101,7 @@ private:
InMemoryStruct<macho::Section64> &Res) const;
void getRelocation(DataRefImpl Rel,
InMemoryStruct<macho::RelocationEntry> &Res) const;
std::size_t getSectionIndex(DataRefImpl Sec) const;
};
MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, MachOObject *MOO,
@ -324,7 +330,7 @@ error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
}
ObjectFile::symbol_iterator MachOObjectFile::begin_symbols() const {
symbol_iterator MachOObjectFile::begin_symbols() const {
// DRI.d.a = segment number; DRI.d.b = symbol index.
DataRefImpl DRI;
DRI.d.a = DRI.d.b = 0;
@ -332,7 +338,7 @@ ObjectFile::symbol_iterator MachOObjectFile::begin_symbols() const {
return symbol_iterator(SymbolRef(DRI, this));
}
ObjectFile::symbol_iterator MachOObjectFile::end_symbols() const {
symbol_iterator MachOObjectFile::end_symbols() const {
DataRefImpl DRI;
DRI.d.a = MachOObj->getHeader().NumLoadCommands;
DRI.d.b = 0;
@ -380,6 +386,13 @@ MachOObjectFile::getSection(DataRefImpl DRI,
MachOObj->ReadSection(LCI, DRI.d.b, Res);
}
std::size_t MachOObjectFile::getSectionIndex(DataRefImpl Sec) const {
SectionList::const_iterator loc =
std::find(Sections.begin(), Sections.end(), Sec);
assert(loc != Sections.end() && "Sec is not a valid section!");
return std::distance(Sections.begin(), loc);
}
void
MachOObjectFile::getSection64(DataRefImpl DRI,
InMemoryStruct<macho::Section64> &Res) const {
@ -511,14 +524,37 @@ error_code MachOObjectFile::sectionContainsSymbol(DataRefImpl Sec,
return object_error::success;
}
ObjectFile::section_iterator MachOObjectFile::begin_sections() const {
relocation_iterator MachOObjectFile::getSectionRelBegin(DataRefImpl Sec) const {
DataRefImpl ret;
ret.d.a = 0;
ret.d.b = getSectionIndex(Sec);
return relocation_iterator(RelocationRef(ret, this));
}
relocation_iterator MachOObjectFile::getSectionRelEnd(DataRefImpl Sec) const {
uint32_t last_reloc;
if (is64BitLoadCommand(MachOObj, Sec)) {
InMemoryStruct<macho::Section64> Sect;
getSection64(Sec, Sect);
last_reloc = Sect->NumRelocationTableEntries;
} else {
InMemoryStruct<macho::Section> Sect;
getSection(Sec, Sect);
last_reloc = Sect->NumRelocationTableEntries;
}
DataRefImpl ret;
ret.d.a = last_reloc;
ret.d.b = getSectionIndex(Sec);
return relocation_iterator(RelocationRef(ret, this));
}
section_iterator MachOObjectFile::begin_sections() const {
DataRefImpl DRI;
DRI.d.a = DRI.d.b = 0;
moveToNextSection(DRI);
return section_iterator(SectionRef(DRI, this));
}
ObjectFile::section_iterator MachOObjectFile::end_sections() const {
section_iterator MachOObjectFile::end_sections() const {
DataRefImpl DRI;
DRI.d.a = MachOObj->getHeader().NumLoadCommands;
DRI.d.b = 0;
@ -545,23 +581,6 @@ getRelocation(DataRefImpl Rel,
error_code MachOObjectFile::getRelocationNext(DataRefImpl Rel,
RelocationRef &Res) const {
++Rel.d.a;
while (Rel.d.b < Sections.size()) {
unsigned relocationCount;
if (MachOObj->is64Bit()) {
InMemoryStruct<macho::Section64> Sect;
getSection64(Sections[Rel.d.b], Sect);
relocationCount = Sect->NumRelocationTableEntries;
} else {
InMemoryStruct<macho::Section> Sect;
getSection(Sections[Rel.d.b], Sect);
relocationCount = Sect->NumRelocationTableEntries;
}
if (Rel.d.a < relocationCount)
break;
Rel.d.a = 0;
++Rel.d.b;
}
Res = RelocationRef(Rel, this);
return object_error::success;
}
@ -610,6 +629,10 @@ error_code MachOObjectFile::getRelocationType(DataRefImpl Rel,
Res = RE->Word1;
return object_error::success;
}
error_code MachOObjectFile::getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
return object_error::success;
}
error_code MachOObjectFile::getRelocationAdditionalInfo(DataRefImpl Rel,
int64_t &Res) const {
InMemoryStruct<macho::RelocationEntry> RE;
@ -631,16 +654,9 @@ error_code MachOObjectFile::getRelocationAdditionalInfo(DataRefImpl Rel,
}
return object_error::success;
}
ObjectFile::relocation_iterator MachOObjectFile::begin_relocations() const {
DataRefImpl ret;
ret.d.a = ret.d.b = 0;
return relocation_iterator(RelocationRef(ret, this));
}
ObjectFile::relocation_iterator MachOObjectFile::end_relocations() const {
DataRefImpl ret;
ret.d.a = 0;
ret.d.b = Sections.size();
return relocation_iterator(RelocationRef(ret, this));
error_code MachOObjectFile::getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
return object_error::success;
}
/*===-- Miscellaneous -----------------------------------------------------===*/

4
lib/Object/Object.cpp
View File

@ -27,8 +27,8 @@ void LLVMDisposeObjectFile(LLVMObjectFileRef ObjectFile) {
}
LLVMSectionIteratorRef LLVMGetSections(LLVMObjectFileRef ObjectFile) {
ObjectFile::section_iterator SI = unwrap(ObjectFile)->begin_sections();
return wrap(new ObjectFile::section_iterator(SI));
section_iterator SI = unwrap(ObjectFile)->begin_sections();
return wrap(new section_iterator(SI));
}
void LLVMDisposeSectionIterator(LLVMSectionIteratorRef SI) {

4
tools/llvm-objdump/llvm-objdump.cpp
View File

@ -155,7 +155,7 @@ void llvm::DisassembleInputLibObject(StringRef Filename) {
<< ":\tfile format " << Obj->getFileFormatName() << "\n\n";
error_code ec;
for (ObjectFile::section_iterator i = Obj->begin_sections(),
for (section_iterator i = Obj->begin_sections(),
e = Obj->end_sections();
i != e; i.increment(ec)) {
if (error(ec)) break;
@ -165,7 +165,7 @@ void llvm::DisassembleInputLibObject(StringRef Filename) {
// Make a list of all the symbols in this section.
std::vector<std::pair<uint64_t, StringRef> > Symbols;
for (ObjectFile::symbol_iterator si = Obj->begin_symbols(),
for (symbol_iterator si = Obj->begin_symbols(),
se = Obj->end_symbols();
si != se; si.increment(ec)) {
bool contains;