Simplify -e <number> option handling.
This patch is to parse the entry symbol name lazily. llvm-svn: 288882
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@ -148,7 +148,6 @@ struct Configuration {
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ELFKind EKind = ELFNoneKind;
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uint16_t DefaultSymbolVersion = llvm::ELF::VER_NDX_GLOBAL;
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uint16_t EMachine = llvm::ELF::EM_NONE;
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uint64_t EntryAddr = 0;
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uint64_t ErrorLimit = 20;
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uint64_t ImageBase;
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uint64_t MaxPageSize;
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@ -780,18 +780,10 @@ template <class ELFT> void LinkerDriver::link(opt::InputArgList &Args) {
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for (InputFile *F : Files)
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Symtab.addFile(F);
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// Add the start symbol.
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// It initializes either Config->Entry or Config->EntryAddr.
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// Note that AMDGPU binaries have no entries.
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if (!Config->Entry.empty()) {
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// It is either "-e <addr>" or "-e <symbol>".
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if (!Config->Entry.getAsInteger(0, Config->EntryAddr))
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Config->Entry = "";
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} else if (!Config->Relocatable && Config->EMachine != EM_AMDGPU) {
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// -e was not specified. Use the default start symbol name
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// if it is resolvable.
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// Add the start symbol. Note that AMDGPU binaries have no entries.
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if (Config->Entry.empty() && !Config->Relocatable &&
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Config->EMachine != EM_AMDGPU)
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Config->Entry = (Config->EMachine == EM_MIPS) ? "__start" : "_start";
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}
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// If an object file defining the entry symbol is in an archive file,
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// extract the file now.
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@ -1402,11 +1402,13 @@ template <class ELFT> void Writer<ELFT>::setPhdrs() {
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// 4. the address of the first byte of the .text section, if present;
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// 5. the address 0.
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template <class ELFT> typename ELFT::uint Writer<ELFT>::getEntryAddr() {
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// Case 1, 2 or 3
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if (Config->Entry.empty())
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return Config->EntryAddr;
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// Case 1, 2 or 3. As a special case, if the symbol is actually
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// a number, we'll use that number as an address.
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if (SymbolBody *B = Symtab<ELFT>::X->find(Config->Entry))
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return B->getVA<ELFT>();
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uint64_t Addr;
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if (!Config->Entry.getAsInteger(0, Addr))
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return Addr;
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// Case 4
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if (OutputSectionBase *Sec = findSection(".text")) {
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