aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--include/llvm-c/Object.h8
-rw-r--r--include/llvm/Object/COFF.h11
-rw-r--r--include/llvm/Object/ObjectFile.h119
-rw-r--r--lib/Object/COFFObjectFile.cpp157
-rw-r--r--lib/Object/ELFObjectFile.cpp380
-rw-r--r--lib/Object/MachOObjectFile.cpp82
-rw-r--r--lib/Object/Object.cpp4
-rw-r--r--tools/llvm-objdump/llvm-objdump.cpp4
8 files changed, 561 insertions, 204 deletions
diff --git a/include/llvm-c/Object.h b/include/llvm-c/Object.h
index 6e72b59466..7b1cf717f7 100644
--- a/include/llvm-c/Object.h
+++ b/include/llvm-c/Object.h
@@ -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));
}
}
}
diff --git a/include/llvm/Object/COFF.h b/include/llvm/Object/COFF.h
index 6a91008a40..9d83e287e4 100644
--- a/include/llvm/Object/COFF.h
+++ b/include/llvm/Object/COFF.h
@@ -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;
diff --git a/include/llvm/Object/ObjectFile.h b/include/llvm/Object/ObjectFile.h
index d648f35511..1390a7ed1e 100644
--- a/include/llvm/Object/ObjectFile.h
+++ b/include/llvm/Object/ObjectFile.h
@@ -28,11 +28,50 @@ 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
diff --git a/lib/Object/COFFObjectFile.cpp b/lib/Object/COFFObjectFile.cpp
index 10afad832e..9255c2321f 100644
--- a/lib/Object/COFFObjectFile.cpp
+++ b/lib/Object/COFFObjectFile.cpp
@@ -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 +536,27 @@ 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;
- }
- }
+ ++*reinterpret_cast<const coff_relocation**>(&Rel.p);
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,
@@ -560,25 +573,83 @@ 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));
-}
-ObjectFile::relocation_iterator COFFObjectFile::end_relocations() const {
- DataRefImpl ret;
- ret.d.a = 0;
- ret.d.b = Header->NumberOfSections;
- 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;
}
-
namespace llvm {
ObjectFile *ObjectFile::createCOFFObjectFile(MemoryBuffer *Object) {
diff --git a/lib/Object/ELFObjectFile.cpp b/lib/Object/ELFObjectFile.cpp
index 3a151d3154..3ad1586db4 100644
--- a/lib/Object/ELFObjectFile.cpp
+++ b/lib/Object/ELFObjectFile.cpp
@@ -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);
+ 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);
+ 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];
-
- // 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();
+ ++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.
+ RelocMap_t::mapped_type &relocseclist =
+ SectionRelocMap.lookup(getSection(Rel.w.a));
+
+ // Do a binary search for the current reloc section index (which must be
+ // present). Then get the next one.
+ 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";</