summaryrefslogtreecommitdiffstats
path: root/llvm
diff options
context:
space:
mode:
Diffstat (limited to 'llvm')
-rw-r--r--llvm/include/llvm/Object/ELF.h79
-rw-r--r--llvm/include/llvm/Object/ELFTypes.h18
-rw-r--r--llvm/test/Object/Inputs/no-section-table.sobin2544 -> 0 bytes
-rw-r--r--llvm/test/Object/no-section-table.test8
-rw-r--r--llvm/tools/llvm-readobj/ELFDumper.cpp13
-rw-r--r--llvm/tools/llvm-readobj/ObjDumper.h1
-rw-r--r--llvm/tools/llvm-readobj/StreamWriter.h4
-rw-r--r--llvm/tools/llvm-readobj/llvm-readobj.cpp6
8 files changed, 27 insertions, 102 deletions
diff --git a/llvm/include/llvm/Object/ELF.h b/llvm/include/llvm/Object/ELF.h
index 068fc32f3a2..3b0c548ffe1 100644
--- a/llvm/include/llvm/Object/ELF.h
+++ b/llvm/include/llvm/Object/ELF.h
@@ -16,7 +16,6 @@
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/IntervalMap.h"
#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringSwitch.h"
@@ -140,7 +139,6 @@ public:
typedef Elf_Verneed_Impl<ELFT> Elf_Verneed;
typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux;
typedef Elf_Versym_Impl<ELFT> Elf_Versym;
- typedef Elf_Hash<ELFT> Elf_Hash;
typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_Iter;
typedef iterator_range<Elf_Dyn_Iter> Elf_Dyn_Range;
typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter;
@@ -178,7 +176,6 @@ private:
const Elf_Shdr *dot_symtab_sec = nullptr; // Symbol table section.
StringRef DynSymStrTab; // Dynnamic symbol string table.
const Elf_Shdr *DotDynSymSec = nullptr; // Dynamic symbol table section.
- const Elf_Hash *HashTable = nullptr;
const Elf_Shdr *SymbolTableSectionHeaderIndex = nullptr;
DenseMap<const Elf_Sym *, ELF::Elf64_Word> ExtendedSymbolTable;
@@ -232,8 +229,6 @@ private:
void LoadVersionNeeds(const Elf_Shdr *ec) const;
void LoadVersionMap() const;
- void scanDynamicTable();
-
public:
template<typename T>
const T *getEntry(uint32_t Section, uint32_t Entry) const;
@@ -242,7 +237,6 @@ public:
const Elf_Shdr *getDotSymtabSec() const { return dot_symtab_sec; }
const Elf_Shdr *getDotDynSymSec() const { return DotDynSymSec; }
- const Elf_Hash *getHashTable() const { return HashTable; }
ErrorOr<StringRef> getStringTable(const Elf_Shdr *Section) const;
const char *getDynamicString(uintX_t Offset) const;
@@ -584,10 +578,8 @@ ELFFile<ELFT>::ELFFile(StringRef Object, std::error_code &EC)
Header = reinterpret_cast<const Elf_Ehdr *>(base());
- if (Header->e_shoff == 0) {
- scanDynamicTable();
+ if (Header->e_shoff == 0)
return;
- }
const uint64_t SectionTableOffset = Header->e_shoff;
@@ -612,13 +604,6 @@ ELFFile<ELFT>::ELFFile(StringRef Object, std::error_code &EC)
for (const Elf_Shdr &Sec : sections()) {
switch (Sec.sh_type) {
- case ELF::SHT_HASH:
- if (HashTable) {
- EC = object_error::parse_failed;
- return;
- }
- HashTable = reinterpret_cast<const Elf_Hash *>(base() + Sec.sh_offset);
- break;
case ELF::SHT_SYMTAB_SHNDX:
if (SymbolTableSectionHeaderIndex) {
// More than one .symtab_shndx!
@@ -716,21 +701,7 @@ ELFFile<ELFT>::ELFFile(StringRef Object, std::error_code &EC)
}
}
- scanDynamicTable();
-
- EC = std::error_code();
-}
-
-template <class ELFT>
-void ELFFile<ELFT>::scanDynamicTable() {
- // Build load-address to file-offset map.
- typedef IntervalMap<
- uintX_t, uintptr_t,
- IntervalMapImpl::NodeSizer<uintX_t, uintptr_t>::LeafSize,
- IntervalMapHalfOpenInfo<uintX_t>> LoadMapT;
- typename LoadMapT::Allocator Alloc;
- LoadMapT LoadMap(Alloc);
-
+ // Scan program headers.
for (Elf_Phdr_Iter PhdrI = program_header_begin(),
PhdrE = program_header_end();
PhdrI != PhdrE; ++PhdrI) {
@@ -738,36 +709,34 @@ void ELFFile<ELFT>::scanDynamicTable() {
DynamicRegion.Addr = base() + PhdrI->p_offset;
DynamicRegion.Size = PhdrI->p_filesz;
DynamicRegion.EntSize = sizeof(Elf_Dyn);
- continue;
+ break;
}
- if (PhdrI->p_type != ELF::PT_LOAD)
- continue;
- if (PhdrI->p_filesz == 0)
- continue;
- LoadMap.insert(PhdrI->p_vaddr, PhdrI->p_vaddr + PhdrI->p_filesz,
- PhdrI->p_offset);
}
- auto toMappedAddr = [&](uint64_t VAddr) -> const uint8_t * {
- auto I = LoadMap.find(VAddr);
- if (I == LoadMap.end())
- return nullptr;
- return base() + I.value() + (VAddr - I.start());
- };
-
+ // Scan dynamic table.
for (Elf_Dyn_Iter DynI = dynamic_table_begin(), DynE = dynamic_table_end();
DynI != DynE; ++DynI) {
switch (DynI->d_tag) {
- case ELF::DT_HASH:
- if (HashTable)
- continue;
- HashTable =
- reinterpret_cast<const Elf_Hash *>(toMappedAddr(DynI->getPtr()));
- break;
- case ELF::DT_RELA:
- if (!DynRelaRegion.Addr)
- DynRelaRegion.Addr = toMappedAddr(DynI->getPtr());
+ case ELF::DT_RELA: {
+ uint64_t VBase = 0;
+ const uint8_t *FBase = nullptr;
+ for (Elf_Phdr_Iter PhdrI = program_header_begin(),
+ PhdrE = program_header_end();
+ PhdrI != PhdrE; ++PhdrI) {
+ if (PhdrI->p_type != ELF::PT_LOAD)
+ continue;
+ if (DynI->getPtr() >= PhdrI->p_vaddr &&
+ DynI->getPtr() < PhdrI->p_vaddr + PhdrI->p_memsz) {
+ VBase = PhdrI->p_vaddr;
+ FBase = base() + PhdrI->p_offset;
+ break;
+ }
+ }
+ if (!VBase)
+ return;
+ DynRelaRegion.Addr = FBase + DynI->getPtr() - VBase;
break;
+ }
case ELF::DT_RELASZ:
DynRelaRegion.Size = DynI->getVal();
break;
@@ -775,6 +744,8 @@ void ELFFile<ELFT>::scanDynamicTable() {
DynRelaRegion.EntSize = DynI->getVal();
}
}
+
+ EC = std::error_code();
}
template <class ELFT>
diff --git a/llvm/include/llvm/Object/ELFTypes.h b/llvm/include/llvm/Object/ELFTypes.h
index 87de41c1b4a..63e13909ae5 100644
--- a/llvm/include/llvm/Object/ELFTypes.h
+++ b/llvm/include/llvm/Object/ELFTypes.h
@@ -10,7 +10,6 @@
#ifndef LLVM_OBJECT_ELFTYPES_H
#define LLVM_OBJECT_ELFTYPES_H
-#include "llvm/ADT/ArrayRef.h"
#include "llvm/Object/Error.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/ELF.h"
@@ -464,23 +463,6 @@ struct Elf_Phdr_Impl<ELFType<TargetEndianness, true>> {
Elf_Xword p_align; // Segment alignment constraint
};
-// ELFT needed for endianess.
-template <class ELFT>
-struct Elf_Hash {
- LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
- Elf_Word nbucket;
- Elf_Word nchain;
-
- ArrayRef<const Elf_Word> buckets() const {
- return ArrayRef<const Elf_Word>(&nbucket + 2, &nbucket + 2 + nbucket);
- }
-
- ArrayRef<const Elf_Word> chains() const {
- return ArrayRef<const Elf_Word>(&nbucket + 2 + nbucket,
- &nbucket + 2 + nbucket + nchain);
- }
-};
-
// MIPS .reginfo section
template <class ELFT>
struct Elf_Mips_RegInfo;
diff --git a/llvm/test/Object/Inputs/no-section-table.so b/llvm/test/Object/Inputs/no-section-table.so
deleted file mode 100644
index fd176ebf7ce..00000000000
--- a/llvm/test/Object/Inputs/no-section-table.so
+++ /dev/null
Binary files differ
diff --git a/llvm/test/Object/no-section-table.test b/llvm/test/Object/no-section-table.test
deleted file mode 100644
index 1049390ce85..00000000000
--- a/llvm/test/Object/no-section-table.test
+++ /dev/null
@@ -1,8 +0,0 @@
-RUN: llvm-readobj %p/Inputs/no-section-table.so -hash-table | FileCheck %s
-
-CHECK: HashTable {
-CHECK: Num Buckets: 3
-CHECK: Num Chains: 13
-CHECK: Buckets: [12, 10, 11]
-CHECK: Chains: [0, 0, 0, 0, 2, 3, 4, 0, 7, 5, 6, 8, 9]
-CHECK: }
diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
index 574964a4cc5..a4b25efeb9b 100644
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -56,7 +56,6 @@ public:
void printDynamicTable() override;
void printNeededLibraries() override;
void printProgramHeaders() override;
- void printHashTable() override;
void printAttributes() override;
void printMipsPLTGOT() override;
@@ -1120,18 +1119,6 @@ void ELFDumper<ELFT>::printProgramHeaders() {
}
}
-template <typename ELFT>
-void ELFDumper<ELFT>::printHashTable() {
- DictScope D(W, "HashTable");
- auto HT = Obj->getHashTable();
- if (!HT)
- return;
- W.printNumber("Num Buckets", HT->nbucket);
- W.printNumber("Num Chains", HT->nchain);
- W.printList("Buckets", HT->buckets());
- W.printList("Chains", HT->chains());
-}
-
template <class ELFT>
void ELFDumper<ELFT>::printAttributes() {
W.startLine() << "Attributes not implemented.\n";
diff --git a/llvm/tools/llvm-readobj/ObjDumper.h b/llvm/tools/llvm-readobj/ObjDumper.h
index 5ecf0ec3d6f..27e15b256cc 100644
--- a/llvm/tools/llvm-readobj/ObjDumper.h
+++ b/llvm/tools/llvm-readobj/ObjDumper.h
@@ -37,7 +37,6 @@ public:
virtual void printDynamicTable() { }
virtual void printNeededLibraries() { }
virtual void printProgramHeaders() { }
- virtual void printHashTable() { }
// Only implemented for ARM ELF at this time.
virtual void printAttributes() { }
diff --git a/llvm/tools/llvm-readobj/StreamWriter.h b/llvm/tools/llvm-readobj/StreamWriter.h
index f3cc57ef940..245588ba060 100644
--- a/llvm/tools/llvm-readobj/StreamWriter.h
+++ b/llvm/tools/llvm-readobj/StreamWriter.h
@@ -181,8 +181,8 @@ public:
startLine() << Label << ": " << (Value ? "Yes" : "No") << '\n';
}
- template <typename T>
- void printList(StringRef Label, const T &List) {
+ template <typename T_>
+ void printList(StringRef Label, const SmallVectorImpl<T_> &List) {
startLine() << Label << ": [";
bool Comma = false;
for (const auto &Item : List) {
diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
index 12afacb0a85..990299bc2ce 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.cpp
+++ b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -127,10 +127,6 @@ namespace opts {
cl::opt<bool> ProgramHeaders("program-headers",
cl::desc("Display ELF program headers"));
- // -hash-table
- cl::opt<bool> HashTable("hash-table",
- cl::desc("Display ELF hash table"));
-
// -expand-relocs
cl::opt<bool> ExpandRelocs("expand-relocs",
cl::desc("Expand each shown relocation to multiple lines"));
@@ -304,8 +300,6 @@ static void dumpObject(const ObjectFile *Obj) {
Dumper->printNeededLibraries();
if (opts::ProgramHeaders)
Dumper->printProgramHeaders();
- if (opts::HashTable)
- Dumper->printHashTable();
if (Obj->getArch() == llvm::Triple::arm && Obj->isELF())
if (opts::ARMAttributes)
Dumper->printAttributes();
OpenPOWER on IntegriCloud