Rename VAStart -> ImageBase. NFC.

Config members are named after corresponding command line options.
This patch renames VAStart ImageBase so that they are in line with
--image-base.

Differential Revision: http://reviews.llvm.org/D22277

llvm-svn: 275298

lld/ELF/Config.h

@@ -117,7 +117,7 @@ struct Configuration {
   ELFKind EKind = ELFNoneKind;
   uint16_t EMachine = llvm::ELF::EM_NONE;
   uint64_t EntryAddr = -1;
-  uint64_t VAStart;
+  uint64_t ImageBase;
   unsigned LtoJobs;
   unsigned LtoO;
   unsigned Optimize;

lld/ELF/Driver.cpp

@@ -535,12 +535,12 @@ template <class ELFT> void LinkerDriver::link(opt::InputArgList &Args) {
 
   if (auto *Arg = Args.getLastArg(OPT_image_base)) {
     StringRef S = Arg->getValue();
-    if (S.getAsInteger(0, Config->VAStart))
+    if (S.getAsInteger(0, Config->ImageBase))
       error(Arg->getSpelling() + ": number expected, but got " + S);
-    else if ((Config->VAStart % Target->PageSize) != 0)
+    else if ((Config->ImageBase % Target->PageSize) != 0)
       warning(Arg->getSpelling() + ": address isn't multiple of page size");
   } else {
-    Config->VAStart = Target->getVAStart();
+    Config->ImageBase = Target->getImageBase();
   }
 
   for (std::unique_ptr<InputFile> &F : Files)

lld/ELF/OutputSections.cpp

@@ -724,7 +724,7 @@ template <class ELFT> void DynamicSection<ELFT>::finalize() {
   if (Config->EMachine == EM_MIPS) {
     Add({DT_MIPS_RLD_VERSION, 1});
     Add({DT_MIPS_FLAGS, RHF_NOTPOT});
-    Add({DT_MIPS_BASE_ADDRESS, (uintX_t)Target->getVAStart()});
+    Add({DT_MIPS_BASE_ADDRESS, (uintX_t)Target->getImageBase()});
     Add({DT_MIPS_SYMTABNO, Out<ELFT>::DynSymTab->getNumSymbols()});
     Add({DT_MIPS_LOCAL_GOTNO, Out<ELFT>::Got->getMipsLocalEntriesNum()});
     if (const SymbolBody *B = Out<ELFT>::Got->getMipsFirstGlobalEntry())

lld/ELF/Target.cpp

@@ -250,7 +250,9 @@ uint64_t TargetInfo::getImplicitAddend(const uint8_t *Buf,
   return 0;
 }
 
-uint64_t TargetInfo::getVAStart() const { return Config->Pic ? 0 : VAStart; }
+uint64_t TargetInfo::getImageBase() const {
+  return Config->Pic ? 0 : ImageBase;
+}
 
 bool TargetInfo::usesOnlyLowPageBits(uint32_t Type) const { return false; }
 
@@ -989,7 +991,7 @@ PPC64TargetInfo::PPC64TargetInfo() {
   //
   // And because the lowest non-zero 256M boundary is 0x10000000, PPC64 linkers
   // use 0x10000000 as the starting address.
-  VAStart = 0x10000000;
+  ImageBase = 0x10000000;
 }
 
 static uint64_t PPC64TocOffset = 0x8000;

lld/ELF/Target.h

@@ -23,7 +23,7 @@ class SymbolBody;
 
 class TargetInfo {
 public:
-  uint64_t getVAStart() const;
+  uint64_t getImageBase() const;
   virtual bool isTlsInitialExecRel(uint32_t Type) const;
   virtual bool isTlsLocalDynamicRel(uint32_t Type) const;
   virtual bool isTlsGlobalDynamicRel(uint32_t Type) const;
@@ -70,7 +70,7 @@ public:
   // Given that, the smallest value that can be used in here is 0x10000.
   // If using 2MB pages, the smallest page aligned address that works is
   // 0x200000, but it looks like every OS uses 4k pages for executables.
-  uint64_t VAStart = 0x10000;
+  uint64_t ImageBase = 0x10000;
 
   uint32_t CopyRel;
   uint32_t GotRel;

lld/ELF/Writer.cpp

@@ -1022,7 +1022,7 @@ template <class ELFT> void Writer<ELFT>::fixSectionAlignments() {
 // sections. These are special, we do not include them into output sections
 // list, but have them to simplify the code.
 template <class ELFT> void Writer<ELFT>::fixHeaders() {
-  uintX_t BaseVA = ScriptConfig->DoLayout ? 0 : Config->VAStart;
+  uintX_t BaseVA = ScriptConfig->DoLayout ? 0 : Config->ImageBase;
   Out<ELFT>::ElfHeader->setVA(BaseVA);
   uintX_t Off = Out<ELFT>::ElfHeader->getSize();
   Out<ELFT>::ProgramHeaders->setVA(Off + BaseVA);
@@ -1030,7 +1030,7 @@ template <class ELFT> void Writer<ELFT>::fixHeaders() {
 
 // Assign VAs (addresses at run-time) to output sections.
 template <class ELFT> void Writer<ELFT>::assignAddresses() {
-  uintX_t VA = Config->VAStart + Out<ELFT>::ElfHeader->getSize() +
+  uintX_t VA = Config->ImageBase + Out<ELFT>::ElfHeader->getSize() +
                Out<ELFT>::ProgramHeaders->getSize();
 
   uintX_t ThreadBssOffset = 0;