RPCSX/llvm
1
0
Fork 0
mirror of https://github.com/RPCSX/llvm.git synced 2024-11-27 21:50:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Move to llvm-objdump a large amount of code to that is only used there.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238898 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2015-06-03 04:48:06 +00:00
parent cbf5311a34
commit 8c7a0fd91a
8 changed files with 383 additions and 370 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/llvm/Object/COFF.h
View File

@ -647,10 +647,6 @@ protected:
std::error_code
getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const override;
std::error_code
getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const override;
public:
COFFObjectFile(MemoryBufferRef Object, std::error_code &EC);
basic_symbol_iterator symbol_begin_impl() const override;

84
include/llvm/Object/ELFObjectFile.h
View File

@ -118,9 +118,6 @@ protected:
std::error_code
getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const override;
std::error_code
getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const override;
uint64_t getROffset(DataRefImpl Rel) const;
StringRef getRelocationTypeName(uint32_t Type) const;
@ -707,87 +704,6 @@ ELFObjectFile<ELFT>::getRelocationAddend(DataRefImpl Rel,
}
}
template <class ELFT>
std::error_code ELFObjectFile<ELFT>::getRelocationValueString(
DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
const Elf_Shdr *sec = getRelSection(Rel);
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(EF.isMips64EL());
symbol_index = getRel(Rel)->getSymbol(EF.isMips64EL());
// TODO: Read implicit addend from section data.
break;
}
case ELF::SHT_RELA: {
type = getRela(Rel)->getType(EF.isMips64EL());
symbol_index = getRela(Rel)->getSymbol(EF.isMips64EL());
addend = getRela(Rel)->r_addend;
break;
}
}
const Elf_Sym *symb =
EF.template getEntry<Elf_Sym>(sec->sh_link, symbol_index);
ErrorOr<StringRef> SymName =
EF.getSymbolName(EF.getSection(sec->sh_link), symb);
if (!SymName)
return SymName.getError();
switch (EF.getHeader()->e_machine) {
case ELF::EM_X86_64:
switch (type) {
case ELF::R_X86_64_PC8:
case ELF::R_X86_64_PC16:
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;
case ELF::R_X86_64_8:
case ELF::R_X86_64_16:
case ELF::R_X86_64_32:
case ELF::R_X86_64_32S:
case ELF::R_X86_64_64: {
std::string fmtbuf;
raw_string_ostream fmt(fmtbuf);
fmt << *SymName << (addend < 0 ? "" : "+") << addend;
fmt.flush();
Result.append(fmtbuf.begin(), fmtbuf.end());
} break;
default:
res = "Unknown";
}
break;
case ELF::EM_AARCH64: {
std::string fmtbuf;
raw_string_ostream fmt(fmtbuf);
fmt << *SymName;
if (addend != 0)
fmt << (addend < 0 ? "" : "+") << addend;
fmt.flush();
Result.append(fmtbuf.begin(), fmtbuf.end());
break;
}
case ELF::EM_386:
case ELF::EM_ARM:
case ELF::EM_HEXAGON:
case ELF::EM_MIPS:
res = *SymName;
break;
default:
res = "Unknown";
}
if (Result.empty())
Result.append(res.begin(), res.end());
return object_error::success;
}
template <class ELFT>
const typename ELFFile<ELFT>::Elf_Sym *
ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const {

3
include/llvm/Object/MachO.h
View File

@ -240,9 +240,6 @@ public:
std::error_code
getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const override;
std::error_code
getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const override;
std::error_code getRelocationHidden(DataRefImpl Rel,
bool &Result) const override;
uint8_t getRelocationLength(DataRefImpl Rel) const;

13
include/llvm/Object/ObjectFile.h
View File

@ -66,11 +66,6 @@ public:
/// This is for display purposes only.
std::error_code getTypeName(SmallVectorImpl<char> &Result) const;
/// @brief Get a string that represents the calculation of the value of this
/// relocation.
///
/// This is for display purposes only.
std::error_code getValueString(SmallVectorImpl<char> &Result) const;
DataRefImpl getRawDataRefImpl() const;
const ObjectFile *getObjectFile() const;
@ -252,9 +247,6 @@ protected:
virtual std::error_code
getRelocationTypeName(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const = 0;
virtual std::error_code
getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const = 0;
virtual std::error_code getRelocationHidden(DataRefImpl Rel,
bool &Result) const {
Result = false;
@ -480,11 +472,6 @@ RelocationRef::getTypeName(SmallVectorImpl<char> &Result) const {
return OwningObject->getRelocationTypeName(RelocationPimpl, Result);
}
inline std::error_code
RelocationRef::getValueString(SmallVectorImpl<char> &Result) const {
return OwningObject->getRelocationValueString(RelocationPimpl, Result);
}
inline std::error_code RelocationRef::getHidden(bool &Result) const {
return OwningObject->getRelocationHidden(RelocationPimpl, Result);
}

16
lib/Object/COFFObjectFile.cpp
View File

@ -1114,22 +1114,6 @@ COFFObjectFile::getRelocationTypeName(DataRefImpl Rel,
#undef LLVM_COFF_SWITCH_RELOC_TYPE_NAME
std::error_code
COFFObjectFile::getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
const coff_relocation *Reloc = toRel(Rel);
DataRefImpl Sym;
ErrorOr<COFFSymbolRef> Symb = getSymbol(Reloc->SymbolTableIndex);
if (std::error_code EC = Symb.getError())
return EC;
Sym.p = reinterpret_cast<uintptr_t>(Symb->getRawPtr());
StringRef SymName;
if (std::error_code EC = getSymbolName(Sym, SymName))
return EC;
Result.append(SymName.begin(), SymName.end());
return object_error::success;
}
bool COFFObjectFile::isRelocatableObject() const {
return !DataDirectory;
}

240
lib/Object/MachOObjectFile.cpp
View File

@ -128,70 +128,6 @@ static unsigned getCPUType(const MachOObjectFile *O) {
return O->getHeader().cputype;
}
static void printRelocationTargetName(const MachOObjectFile *O,
const MachO::any_relocation_info &RE,
raw_string_ostream &fmt) {
bool IsScattered = O->isRelocationScattered(RE);
// Target of a scattered relocation is an address. In the interest of
// generating pretty output, scan through the symbol table looking for a
// symbol that aligns with that address. If we find one, print it.
// Otherwise, we just print the hex address of the target.
if (IsScattered) {
uint32_t Val = O->getPlainRelocationSymbolNum(RE);
for (const SymbolRef &Symbol : O->symbols()) {
std::error_code ec;
uint64_t Addr;
StringRef Name;
if ((ec = Symbol.getAddress(Addr)))
report_fatal_error(ec.message());
if (Addr != Val)
continue;
if ((ec = Symbol.getName(Name)))
report_fatal_error(ec.message());
fmt << Name;
return;
}
// If we couldn't find a symbol that this relocation refers to, try
// to find a section beginning instead.
for (const SectionRef &Section : O->sections()) {
std::error_code ec;
StringRef Name;
uint64_t Addr = Section.getAddress();
if (Addr != Val)
continue;
if ((ec = Section.getName(Name)))
report_fatal_error(ec.message());
fmt << Name;
return;
}
fmt << format("0x%x", Val);
return;
}
StringRef S;
bool isExtern = O->getPlainRelocationExternal(RE);
uint64_t Val = O->getPlainRelocationSymbolNum(RE);
if (isExtern) {
symbol_iterator SI = O->symbol_begin();
advance(SI, Val);
SI->getName(S);
} else {
section_iterator SI = O->section_begin();
// Adjust for the fact that sections are 1-indexed.
advance(SI, Val - 1);
SI->getName(S);
}
fmt << S;
}
static uint32_t
getPlainRelocationAddress(const MachO::any_relocation_info &RE) {
return RE.r_word0;
@ -794,182 +730,6 @@ MachOObjectFile::getRelocationTypeName(DataRefImpl Rel,
return object_error::success;
}
std::error_code
MachOObjectFile::getRelocationValueString(DataRefImpl Rel,
SmallVectorImpl<char> &Result) const {
MachO::any_relocation_info RE = getRelocation(Rel);
unsigned Arch = this->getArch();
std::string fmtbuf;
raw_string_ostream fmt(fmtbuf);
unsigned Type = this->getAnyRelocationType(RE);
bool IsPCRel = this->getAnyRelocationPCRel(RE);
// Determine any addends that should be displayed with the relocation.
// These require decoding the relocation type, which is triple-specific.
// X86_64 has entirely custom relocation types.
if (Arch == Triple::x86_64) {
bool isPCRel = getAnyRelocationPCRel(RE);
switch (Type) {
case MachO::X86_64_RELOC_GOT_LOAD:
case MachO::X86_64_RELOC_GOT: {
printRelocationTargetName(this, RE, fmt);
fmt << "@GOT";
if (isPCRel) fmt << "PCREL";
break;
}
case MachO::X86_64_RELOC_SUBTRACTOR: {
DataRefImpl RelNext = Rel;
moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = getRelocation(RelNext);
// X86_64_RELOC_SUBTRACTOR must be followed by a relocation of type
// X86_64_RELOC_UNSIGNED.
// NOTE: Scattered relocations don't exist on x86_64.
unsigned RType = getAnyRelocationType(RENext);
if (RType != MachO::X86_64_RELOC_UNSIGNED)
report_fatal_error("Expected X86_64_RELOC_UNSIGNED after "
"X86_64_RELOC_SUBTRACTOR.");
// The X86_64_RELOC_UNSIGNED contains the minuend symbol;
// X86_64_RELOC_SUBTRACTOR contains the subtrahend.
printRelocationTargetName(this, RENext, fmt);
fmt << "-";
printRelocationTargetName(this, RE, fmt);
break;
}
case MachO::X86_64_RELOC_TLV:
printRelocationTargetName(this, RE, fmt);
fmt << "@TLV";
if (isPCRel) fmt << "P";
break;
case MachO::X86_64_RELOC_SIGNED_1:
printRelocationTargetName(this, RE, fmt);
fmt << "-1";
break;
case MachO::X86_64_RELOC_SIGNED_2:
printRelocationTargetName(this, RE, fmt);
fmt << "-2";
break;
case MachO::X86_64_RELOC_SIGNED_4:
printRelocationTargetName(this, RE, fmt);
fmt << "-4";
break;
default:
printRelocationTargetName(this, RE, fmt);
break;
}
// X86 and ARM share some relocation types in common.
} else if (Arch == Triple::x86 || Arch == Triple::arm ||
Arch == Triple::ppc) {
// Generic relocation types...
switch (Type) {
case MachO::GENERIC_RELOC_PAIR: // prints no info
return object_error::success;
case MachO::GENERIC_RELOC_SECTDIFF: {
DataRefImpl RelNext = Rel;
moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = getRelocation(RelNext);
// X86 sect diff's must be followed by a relocation of type
// GENERIC_RELOC_PAIR.
unsigned RType = getAnyRelocationType(RENext);
if (RType != MachO::GENERIC_RELOC_PAIR)
report_fatal_error("Expected GENERIC_RELOC_PAIR after "
"GENERIC_RELOC_SECTDIFF.");
printRelocationTargetName(this, RE, fmt);
fmt << "-";
printRelocationTargetName(this, RENext, fmt);
break;
}
}
if (Arch == Triple::x86 || Arch == Triple::ppc) {
switch (Type) {
case MachO::GENERIC_RELOC_LOCAL_SECTDIFF: {
DataRefImpl RelNext = Rel;
moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = getRelocation(RelNext);
// X86 sect diff's must be followed by a relocation of type
// GENERIC_RELOC_PAIR.
unsigned RType = getAnyRelocationType(RENext);
if (RType != MachO::GENERIC_RELOC_PAIR)
report_fatal_error("Expected GENERIC_RELOC_PAIR after "
"GENERIC_RELOC_LOCAL_SECTDIFF.");
printRelocationTargetName(this, RE, fmt);
fmt << "-";
printRelocationTargetName(this, RENext, fmt);
break;
}
case MachO::GENERIC_RELOC_TLV: {
printRelocationTargetName(this, RE, fmt);
fmt << "@TLV";
if (IsPCRel) fmt << "P";
break;
}
default:
printRelocationTargetName(this, RE, fmt);
}
} else { // ARM-specific relocations
switch (Type) {
case MachO::ARM_RELOC_HALF:
case MachO::ARM_RELOC_HALF_SECTDIFF: {
// Half relocations steal a bit from the length field to encode
// whether this is an upper16 or a lower16 relocation.
bool isUpper = getAnyRelocationLength(RE) >> 1;
if (isUpper)
fmt << ":upper16:(";
else
fmt << ":lower16:(";
printRelocationTargetName(this, RE, fmt);
DataRefImpl RelNext = Rel;
moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = getRelocation(RelNext);
// ARM half relocs must be followed by a relocation of type
// ARM_RELOC_PAIR.
unsigned RType = getAnyRelocationType(RENext);
if (RType != MachO::ARM_RELOC_PAIR)
report_fatal_error("Expected ARM_RELOC_PAIR after "
"ARM_RELOC_HALF");
// NOTE: The half of the target virtual address is stashed in the
// address field of the secondary relocation, but we can't reverse
// engineer the constant offset from it without decoding the movw/movt
// instruction to find the other half in its immediate field.
// ARM_RELOC_HALF_SECTDIFF encodes the second section in the
// symbol/section pointer of the follow-on relocation.
if (Type == MachO::ARM_RELOC_HALF_SECTDIFF) {
fmt << "-";
printRelocationTargetName(this, RENext, fmt);
}
fmt << ")";
break;
}
default: {
printRelocationTargetName(this, RE, fmt);
}
}
}
} else
printRelocationTargetName(this, RE, fmt);
fmt.flush();
Result.append(fmtbuf.begin(), fmtbuf.end());
return object_error::success;
}
std::error_code MachOObjectFile::getRelocationHidden(DataRefImpl Rel,
bool &Result) const {
unsigned Arch = getArch();

8
lib/Object/Object.cpp
View File

@ -230,12 +230,6 @@ const char *LLVMGetRelocationTypeName(LLVMRelocationIteratorRef RI) {
// NOTE: Caller takes ownership of returned string.
const char *LLVMGetRelocationValueString(LLVMRelocationIteratorRef RI) {
SmallVector<char, 0> ret;
if (std::error_code ec = (*unwrap(RI))->getValueString(ret))
report_fatal_error(ec.message());
char *str = static_cast<char*>(malloc(ret.size()));
std::copy(ret.begin(), ret.end(), str);
return str;
return strdup("");
}

385
tools/llvm-objdump/llvm-objdump.cpp
View File

@ -32,6 +32,7 @@
#include "llvm/MC/MCRelocationInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/ELFObjectFile.h"
#include "llvm/Object/COFF.h"
#include "llvm/Object/MachO.h"
#include "llvm/Object/ObjectFile.h"
@ -281,6 +282,384 @@ PrettyPrinter &selectPrettyPrinter(Triple const &Triple) {
}
}
template <class ELFT>
static const typename ELFObjectFile<ELFT>::Elf_Rel *
getRel(const ELFFile<ELFT> &EF, DataRefImpl Rel) {
typedef typename ELFObjectFile<ELFT>::Elf_Rel Elf_Rel;
return EF.template getEntry<Elf_Rel>(Rel.d.a, Rel.d.b);
}
template <class ELFT>
static const typename ELFObjectFile<ELFT>::Elf_Rela *
getRela(const ELFFile<ELFT> &EF, DataRefImpl Rela) {
typedef typename ELFObjectFile<ELFT>::Elf_Rela Elf_Rela;
return EF.template getEntry<Elf_Rela>(Rela.d.a, Rela.d.b);
}
template <class ELFT>
static std::error_code getRelocationValueString(const ELFObjectFile<ELFT> *Obj,
DataRefImpl Rel,
SmallVectorImpl<char> &Result) {
typedef typename ELFObjectFile<ELFT>::Elf_Sym Elf_Sym;
typedef typename ELFObjectFile<ELFT>::Elf_Shdr Elf_Shdr;
const ELFFile<ELFT> &EF = *Obj->getELFFile();
const Elf_Shdr *sec = EF.getSection(Rel.d.a);
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(EF, Rel)->getType(EF.isMips64EL());
symbol_index = getRel(EF, Rel)->getSymbol(EF.isMips64EL());
// TODO: Read implicit addend from section data.
break;
}
case ELF::SHT_RELA: {
type = getRela(EF, Rel)->getType(EF.isMips64EL());
symbol_index = getRela(EF, Rel)->getSymbol(EF.isMips64EL());
addend = getRela(EF, Rel)->r_addend;
break;
}
}
const Elf_Sym *symb =
EF.template getEntry<Elf_Sym>(sec->sh_link, symbol_index);
ErrorOr<StringRef> SymName =
EF.getSymbolName(EF.getSection(sec->sh_link), symb);
if (!SymName)
return SymName.getError();
switch (EF.getHeader()->e_machine) {
case ELF::EM_X86_64:
switch (type) {
case ELF::R_X86_64_PC8:
case ELF::R_X86_64_PC16:
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;
case ELF::R_X86_64_8:
case ELF::R_X86_64_16:
case ELF::R_X86_64_32:
case ELF::R_X86_64_32S:
case ELF::R_X86_64_64: {
std::string fmtbuf;
raw_string_ostream fmt(fmtbuf);
fmt << *SymName << (addend < 0 ? "" : "+") << addend;
fmt.flush();
Result.append(fmtbuf.begin(), fmtbuf.end());
} break;
default:
res = "Unknown";
}
break;
case ELF::EM_AARCH64: {
std::string fmtbuf;
raw_string_ostream fmt(fmtbuf);
fmt << *SymName;
if (addend != 0)
fmt << (addend < 0 ? "" : "+") << addend;
fmt.flush();
Result.append(fmtbuf.begin(), fmtbuf.end());
break;
}
case ELF::EM_386:
case ELF::EM_ARM:
case ELF::EM_HEXAGON:
case ELF::EM_MIPS:
res = *SymName;
break;
default:
res = "Unknown";
}
if (Result.empty())
Result.append(res.begin(), res.end());
return object_error::success;
}
static std::error_code getRelocationValueString(const ELFObjectFileBase *Obj,
const RelocationRef &RelRef,
SmallVectorImpl<char> &Result) {
DataRefImpl Rel = RelRef.getRawDataRefImpl();
if (auto *ELF32LE = dyn_cast<ELF32LEObjectFile>(Obj))
return getRelocationValueString(ELF32LE, Rel, Result);
if (auto *ELF64LE = dyn_cast<ELF64LEObjectFile>(Obj))
return getRelocationValueString(ELF64LE, Rel, Result);
if (auto *ELF32BE = dyn_cast<ELF32BEObjectFile>(Obj))
return getRelocationValueString(ELF32BE, Rel, Result);
auto *ELF64BE = cast<ELF64BEObjectFile>(Obj);
return getRelocationValueString(ELF64BE, Rel, Result);
}
static std::error_code getRelocationValueString(const COFFObjectFile *Obj,
const RelocationRef &Rel,
SmallVectorImpl<char> &Result) {
symbol_iterator SymI = Rel.getSymbol();
StringRef SymName;
if (std::error_code EC = SymI->getName(SymName))
return EC;
Result.append(SymName.begin(), SymName.end());
return object_error::success;
}
static void printRelocationTargetName(const MachOObjectFile *O,
const MachO::any_relocation_info &RE,
raw_string_ostream &fmt) {
bool IsScattered = O->isRelocationScattered(RE);
// Target of a scattered relocation is an address. In the interest of
// generating pretty output, scan through the symbol table looking for a
// symbol that aligns with that address. If we find one, print it.
// Otherwise, we just print the hex address of the target.
if (IsScattered) {
uint32_t Val = O->getPlainRelocationSymbolNum(RE);
for (const SymbolRef &Symbol : O->symbols()) {
std::error_code ec;
uint64_t Addr;
StringRef Name;
if ((ec = Symbol.getAddress(Addr)))
report_fatal_error(ec.message());
if (Addr != Val)
continue;
if ((ec = Symbol.getName(Name)))
report_fatal_error(ec.message());
fmt << Name;
return;
}
// If we couldn't find a symbol that this relocation refers to, try
// to find a section beginning instead.
for (const SectionRef &Section : O->sections()) {
std::error_code ec;
StringRef Name;
uint64_t Addr = Section.getAddress();
if (Addr != Val)
continue;
if ((ec = Section.getName(Name)))
report_fatal_error(ec.message());
fmt << Name;
return;
}
fmt << format("0x%x", Val);
return;
}
StringRef S;
bool isExtern = O->getPlainRelocationExternal(RE);
uint64_t Val = O->getPlainRelocationSymbolNum(RE);
if (isExtern) {
symbol_iterator SI = O->symbol_begin();
advance(SI, Val);
SI->getName(S);
} else {
section_iterator SI = O->section_begin();
// Adjust for the fact that sections are 1-indexed.
advance(SI, Val - 1);
SI->getName(S);
}
fmt << S;
}
static std::error_code getRelocationValueString(const MachOObjectFile *Obj,
const RelocationRef &RelRef,
SmallVectorImpl<char> &Result) {
DataRefImpl Rel = RelRef.getRawDataRefImpl();
MachO::any_relocation_info RE = Obj->getRelocation(Rel);
unsigned Arch = Obj->getArch();
std::string fmtbuf;
raw_string_ostream fmt(fmtbuf);
unsigned Type = Obj->getAnyRelocationType(RE);
bool IsPCRel = Obj->getAnyRelocationPCRel(RE);
// Determine any addends that should be displayed with the relocation.
// These require decoding the relocation type, which is triple-specific.
// X86_64 has entirely custom relocation types.
if (Arch == Triple::x86_64) {
bool isPCRel = Obj->getAnyRelocationPCRel(RE);
switch (Type) {
case MachO::X86_64_RELOC_GOT_LOAD:
case MachO::X86_64_RELOC_GOT: {
printRelocationTargetName(Obj, RE, fmt);
fmt << "@GOT";
if (isPCRel)
fmt << "PCREL";
break;
}
case MachO::X86_64_RELOC_SUBTRACTOR: {
DataRefImpl RelNext = Rel;
Obj->moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = Obj->getRelocation(RelNext);
// X86_64_RELOC_SUBTRACTOR must be followed by a relocation of type
// X86_64_RELOC_UNSIGNED.
// NOTE: Scattered relocations don't exist on x86_64.
unsigned RType = Obj->getAnyRelocationType(RENext);
if (RType != MachO::X86_64_RELOC_UNSIGNED)
report_fatal_error("Expected X86_64_RELOC_UNSIGNED after "
"X86_64_RELOC_SUBTRACTOR.");
// The X86_64_RELOC_UNSIGNED contains the minuend symbol;
// X86_64_RELOC_SUBTRACTOR contains the subtrahend.
printRelocationTargetName(Obj, RENext, fmt);
fmt << "-";
printRelocationTargetName(Obj, RE, fmt);
break;
}
case MachO::X86_64_RELOC_TLV:
printRelocationTargetName(Obj, RE, fmt);
fmt << "@TLV";
if (isPCRel)
fmt << "P";
break;
case MachO::X86_64_RELOC_SIGNED_1:
printRelocationTargetName(Obj, RE, fmt);
fmt << "-1";
break;
case MachO::X86_64_RELOC_SIGNED_2:
printRelocationTargetName(Obj, RE, fmt);
fmt << "-2";
break;
case MachO::X86_64_RELOC_SIGNED_4:
printRelocationTargetName(Obj, RE, fmt);
fmt << "-4";
break;
default:
printRelocationTargetName(Obj, RE, fmt);
break;
}
// X86 and ARM share some relocation types in common.
} else if (Arch == Triple::x86 || Arch == Triple::arm ||
Arch == Triple::ppc) {
// Generic relocation types...
switch (Type) {
case MachO::GENERIC_RELOC_PAIR: // prints no info
return object_error::success;
case MachO::GENERIC_RELOC_SECTDIFF: {
DataRefImpl RelNext = Rel;
Obj->moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = Obj->getRelocation(RelNext);
// X86 sect diff's must be followed by a relocation of type
// GENERIC_RELOC_PAIR.
unsigned RType = Obj->getAnyRelocationType(RENext);
if (RType != MachO::GENERIC_RELOC_PAIR)
report_fatal_error("Expected GENERIC_RELOC_PAIR after "
"GENERIC_RELOC_SECTDIFF.");
printRelocationTargetName(Obj, RE, fmt);
fmt << "-";
printRelocationTargetName(Obj, RENext, fmt);
break;
}
}
if (Arch == Triple::x86 || Arch == Triple::ppc) {
switch (Type) {
case MachO::GENERIC_RELOC_LOCAL_SECTDIFF: {
DataRefImpl RelNext = Rel;
Obj->moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = Obj->getRelocation(RelNext);
// X86 sect diff's must be followed by a relocation of type
// GENERIC_RELOC_PAIR.
unsigned RType = Obj->getAnyRelocationType(RENext);
if (RType != MachO::GENERIC_RELOC_PAIR)
report_fatal_error("Expected GENERIC_RELOC_PAIR after "
"GENERIC_RELOC_LOCAL_SECTDIFF.");
printRelocationTargetName(Obj, RE, fmt);
fmt << "-";
printRelocationTargetName(Obj, RENext, fmt);
break;
}
case MachO::GENERIC_RELOC_TLV: {
printRelocationTargetName(Obj, RE, fmt);
fmt << "@TLV";
if (IsPCRel)
fmt << "P";
break;
}
default:
printRelocationTargetName(Obj, RE, fmt);
}
} else { // ARM-specific relocations
switch (Type) {
case MachO::ARM_RELOC_HALF:
case MachO::ARM_RELOC_HALF_SECTDIFF: {
// Half relocations steal a bit from the length field to encode
// whether this is an upper16 or a lower16 relocation.
bool isUpper = Obj->getAnyRelocationLength(RE) >> 1;
if (isUpper)
fmt << ":upper16:(";
else
fmt << ":lower16:(";
printRelocationTargetName(Obj, RE, fmt);
DataRefImpl RelNext = Rel;
Obj->moveRelocationNext(RelNext);
MachO::any_relocation_info RENext = Obj->getRelocation(RelNext);
// ARM half relocs must be followed by a relocation of type
// ARM_RELOC_PAIR.
unsigned RType = Obj->getAnyRelocationType(RENext);
if (RType != MachO::ARM_RELOC_PAIR)
report_fatal_error("Expected ARM_RELOC_PAIR after "
"ARM_RELOC_HALF");
// NOTE: The half of the target virtual address is stashed in the
// address field of the secondary relocation, but we can't reverse
// engineer the constant offset from it without decoding the movw/movt
// instruction to find the other half in its immediate field.
// ARM_RELOC_HALF_SECTDIFF encodes the second section in the
// symbol/section pointer of the follow-on relocation.
if (Type == MachO::ARM_RELOC_HALF_SECTDIFF) {
fmt << "-";
printRelocationTargetName(Obj, RENext, fmt);
}
fmt << ")";
break;
}
default: { printRelocationTargetName(Obj, RE, fmt); }
}
}
} else
printRelocationTargetName(Obj, RE, fmt);
fmt.flush();
Result.append(fmtbuf.begin(), fmtbuf.end());
return object_error::success;
}
static std::error_code getRelocationValueString(const RelocationRef &Rel,
SmallVectorImpl<char> &Result) {
const ObjectFile *Obj = Rel.getObjectFile();
if (auto *ELF = dyn_cast<ELFObjectFileBase>(Obj))
return getRelocationValueString(ELF, Rel, Result);
if (auto *COFF = dyn_cast<COFFObjectFile>(Obj))
return getRelocationValueString(COFF, Rel, Result);
auto *MachO = cast<MachOObjectFile>(Obj);
return getRelocationValueString(MachO, Rel, Result);
}
static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
const Target *TheTarget = getTarget(Obj);
// getTarget() will have already issued a diagnostic if necessary, so
@ -491,8 +870,8 @@ static void DisassembleObject(const ObjectFile *Obj, bool InlineRelocs) {
// Stop when rel_cur's address is past the current instruction.
if (addr >= Index + Size) break;
if (error(rel_cur->getTypeName(name))) goto skip_print_rel;
if (error(rel_cur->getValueString(val))) goto skip_print_rel;
if (error(getRelocationValueString(*rel_cur, val)))
goto skip_print_rel;
outs() << format(Fmt.data(), SectionAddr + addr) << name
<< "\t" << val << "\n";
@ -532,7 +911,7 @@ void llvm::PrintRelocations(const ObjectFile *Obj) {
continue;
if (error(Reloc.getOffset(address)))
continue;
if (error(Reloc.getValueString(valuestr)))
if (error(getRelocationValueString(Reloc, valuestr)))
continue;
outs() << format(Fmt.data(), address) << " " << relocname << " "
<< valuestr << "\n";