[ELF] Delete GotEntrySize and GotPltEntrySize

GotEntrySize and GotPltEntrySize were added in D22288. Later, with
the introduction of wordsize() (then Config->Wordsize), they become
redundant, because there is no target that sets GotEntrySize or
GotPltEntrySize to a number different from Config->Wordsize.

Reviewed By: grimar, ruiu

Differential Revision: https://reviews.llvm.org/D62727

llvm-svn: 362220

lld/ELF/Arch/AArch64.cpp

@@ -61,8 +61,6 @@ AArch64::AArch64() {
   PltRel = R_AARCH64_JUMP_SLOT;
   TlsDescRel = R_AARCH64_TLSDESC;
   TlsGotRel = R_AARCH64_TLS_TPREL64;
-  GotEntrySize = 8;
-  GotPltEntrySize = 8;
   PltEntrySize = 16;
   PltHeaderSize = 32;
   DefaultMaxPageSize = 65536;

lld/ELF/Arch/AMDGPU.cpp

@@ -35,7 +35,6 @@ AMDGPU::AMDGPU() {
   RelativeRel = R_AMDGPU_RELATIVE64;
   GotRel = R_AMDGPU_ABS64;
   NoneRel = R_AMDGPU_NONE;
-  GotEntrySize = 8;
 }
 
 static uint32_t getEFlags(InputFile *File) {

lld/ELF/Arch/ARM.cpp

@@ -56,8 +56,6 @@ ARM::ARM() {
   TlsModuleIndexRel = R_ARM_TLS_DTPMOD32;
   TlsOffsetRel = R_ARM_TLS_DTPOFF32;
   GotBaseSymInGotPlt = false;
-  GotEntrySize = 4;
-  GotPltEntrySize = 4;
   PltEntrySize = 16;
   PltHeaderSize = 32;
   TrapInstr = {0xd4, 0xd4, 0xd4, 0xd4};

lld/ELF/Arch/Hexagon.cpp

@@ -40,11 +40,10 @@ Hexagon::Hexagon() {
   PltRel = R_HEX_JMP_SLOT;
   RelativeRel = R_HEX_RELATIVE;
   GotRel = R_HEX_GLOB_DAT;
-  GotEntrySize = 4;
+
   // The zero'th GOT entry is reserved for the address of _DYNAMIC.  The
   // next 3 are reserved for the dynamic loader.
   GotPltHeaderEntriesNum = 4;
-  GotPltEntrySize = 4;
 
   PltEntrySize = 16;
   PltHeaderSize = 32;

lld/ELF/Arch/Mips.cpp

@@ -46,8 +46,6 @@ template <class ELFT> class MIPS final : public TargetInfo {
 template <class ELFT> MIPS<ELFT>::MIPS() {
   GotPltHeaderEntriesNum = 2;
   DefaultMaxPageSize = 65536;
-  GotEntrySize = sizeof(typename ELFT::uint);
-  GotPltEntrySize = sizeof(typename ELFT::uint);
   GotBaseSymInGotPlt = false;
   PltEntrySize = 16;
   PltHeaderSize = 32;

lld/ELF/Arch/PPC64.cpp

@@ -288,9 +288,7 @@ PPC64::PPC64() {
   PltRel = R_PPC64_JMP_SLOT;
   RelativeRel = R_PPC64_RELATIVE;
   IRelativeRel = R_PPC64_IRELATIVE;
-  GotEntrySize = 8;
   PltEntrySize = 4;
-  GotPltEntrySize = 8;
   GotBaseSymInGotPlt = false;
   GotHeaderEntriesNum = 1;
   GotPltHeaderEntriesNum = 2;

lld/ELF/Arch/SPARCV9.cpp

@@ -37,7 +37,6 @@ SPARCV9::SPARCV9() {
   NoneRel = R_SPARC_NONE;
   PltRel = R_SPARC_JMP_SLOT;
   RelativeRel = R_SPARC_RELATIVE;
-  GotEntrySize = 8;
   PltEntrySize = 32;
   PltHeaderSize = 4 * PltEntrySize;
 

lld/ELF/Arch/X86.cpp

@@ -55,8 +55,6 @@ X86::X86() {
   TlsGotRel = R_386_TLS_TPOFF;
   TlsModuleIndexRel = R_386_TLS_DTPMOD32;
   TlsOffsetRel = R_386_TLS_DTPOFF32;
-  GotEntrySize = 4;
-  GotPltEntrySize = 4;
   PltEntrySize = 16;
   PltHeaderSize = 16;
   TrapInstr = {0xcc, 0xcc, 0xcc, 0xcc}; // 0xcc = INT3

lld/ELF/Arch/X86_64.cpp

@@ -59,8 +59,6 @@ X86_64::X86_64() {
   TlsGotRel = R_X86_64_TPOFF64;
   TlsModuleIndexRel = R_X86_64_DTPMOD64;
   TlsOffsetRel = R_X86_64_DTPOFF64;
-  GotEntrySize = 8;
-  GotPltEntrySize = 8;
   PltEntrySize = 16;
   PltHeaderSize = 16;
   TrapInstr = {0xcc, 0xcc, 0xcc, 0xcc}; // 0xcc = INT3

lld/ELF/Symbols.cpp

@@ -136,9 +136,7 @@ uint64_t Symbol::getGotVA() const {
   return In.Got->getVA() + getGotOffset();
 }
 
-uint64_t Symbol::getGotOffset() const {
-  return GotIndex * Target->GotEntrySize;
-}
+uint64_t Symbol::getGotOffset() const { return GotIndex * Config->Wordsize; }
 
 uint64_t Symbol::getGotPltVA() const {
   if (IsInIplt)
@@ -148,13 +146,13 @@ uint64_t Symbol::getGotPltVA() const {
 
 uint64_t Symbol::getGotPltOffset() const {
   if (IsInIplt)
-    return PltIndex * Target->GotPltEntrySize;
-  return (PltIndex + Target->GotPltHeaderEntriesNum) * Target->GotPltEntrySize;
+    return PltIndex * Config->Wordsize;
+  return (PltIndex + Target->GotPltHeaderEntriesNum) * Config->Wordsize;
 }
 
 uint64_t Symbol::getPPC64LongBranchOffset() const {
   assert(PPC64BranchltIndex != 0xffff);
-  return PPC64BranchltIndex * Target->GotPltEntrySize;
+  return PPC64BranchltIndex * Config->Wordsize;
 }
 
 uint64_t Symbol::getPltVA() const {
@@ -172,7 +170,7 @@ uint64_t Symbol::getPltVA() const {
 uint64_t Symbol::getPPC64LongBranchTableVA() const {
   assert(PPC64BranchltIndex != 0xffff);
   return In.PPC64LongBranchTarget->getVA() +
-         PPC64BranchltIndex * Target->GotPltEntrySize;
+         PPC64BranchltIndex * Config->Wordsize;
 }
 
 uint64_t Symbol::getSize() const {

lld/ELF/SyntheticSections.cpp

@@ -542,8 +542,8 @@ void EhFrameSection::writeTo(uint8_t *Buf) {
 }
 
 GotSection::GotSection()
-    : SyntheticSection(SHF_ALLOC | SHF_WRITE, SHT_PROGBITS,
-                       Target->GotEntrySize, ".got") {
+    : SyntheticSection(SHF_ALLOC | SHF_WRITE, SHT_PROGBITS, Config->Wordsize,
+                       ".got") {
   // PPC64 saves the ElfSym::GlobalOffsetTable .TOC. as the first entry in the
   // .got. If there are no references to .TOC. in the symbol table,
   // ElfSym::GlobalOffsetTable will not be defined and we won't need to save
@@ -1030,7 +1030,7 @@ void MipsGotSection::writeTo(uint8_t *Buf) {
 GotPltSection::GotPltSection()
     : SyntheticSection(SHF_ALLOC | SHF_WRITE,
                        Config->EMachine == EM_PPC64 ? SHT_NOBITS : SHT_PROGBITS,
-                       Target->GotPltEntrySize,
+                       Config->Wordsize,
                        Config->EMachine == EM_PPC64 ? ".plt" : ".got.plt") {}
 
 void GotPltSection::addEntry(Symbol &Sym) {
@@ -1039,13 +1039,12 @@ void GotPltSection::addEntry(Symbol &Sym) {
 }
 
 size_t GotPltSection::getSize() const {
-  return (Target->GotPltHeaderEntriesNum + Entries.size()) *
-         Target->GotPltEntrySize;
+  return (Target->GotPltHeaderEntriesNum + Entries.size()) * Config->Wordsize;
 }
 
 void GotPltSection::writeTo(uint8_t *Buf) {
   Target->writeGotPltHeader(Buf);
-  Buf += Target->GotPltHeaderEntriesNum * Target->GotPltEntrySize;
+  Buf += Target->GotPltHeaderEntriesNum * Config->Wordsize;
   for (const Symbol *B : Entries) {
     Target->writeGotPlt(Buf, *B);
     Buf += Config->Wordsize;
@@ -1076,15 +1075,15 @@ static StringRef getIgotPltName() {
 IgotPltSection::IgotPltSection()
     : SyntheticSection(SHF_ALLOC | SHF_WRITE,
                        Config->EMachine == EM_PPC64 ? SHT_NOBITS : SHT_PROGBITS,
-                       Target->GotPltEntrySize, getIgotPltName()) {}
+                       Config->Wordsize, getIgotPltName()) {}
 
 void IgotPltSection::addEntry(Symbol &Sym) {
   assert(Sym.PltIndex == Entries.size());
   Entries.push_back(&Sym);
 }
 
 size_t IgotPltSection::getSize() const {
-  return Entries.size() * Target->GotPltEntrySize;
+  return Entries.size() * Config->Wordsize;
 }
 
 void IgotPltSection::writeTo(uint8_t *Buf) {
@@ -3228,7 +3227,6 @@ size_t PPC64LongBranchTargetSection::getSize() const {
 }
 
 void PPC64LongBranchTargetSection::writeTo(uint8_t *Buf) {
-  assert(Target->GotPltEntrySize == 8);
   // If linking non-pic we have the final addresses of the targets and they get
   // written to the table directly. For pic the dynamic linker will allocate
   // the section and fill it it.
@@ -3241,7 +3239,7 @@ void PPC64LongBranchTargetSection::writeTo(uint8_t *Buf) {
     // must be a local-call.
     write64(Buf,
             Sym->getVA() + getPPC64GlobalEntryToLocalEntryOffset(Sym->StOther));
-    Buf += Target->GotPltEntrySize;
+    Buf += 8;
   }
 }
 

lld/ELF/Target.h

@@ -99,8 +99,6 @@ class TargetInfo {
   RelType TlsGotRel;
   RelType TlsModuleIndexRel;
   RelType TlsOffsetRel;
-  unsigned GotEntrySize = 0;
-  unsigned GotPltEntrySize = 0;
   unsigned PltEntrySize;
   unsigned PltHeaderSize;