/// \returns The new offset.
uint64_t padToAlignment(unsigned Align) {
+ if (Align == 0)
+ Align = 1;
uint64_t CurrentOffset = InitialOffset + OS.tell();
uint64_t AlignedOffset = RoundUpToAlignment(CurrentOffset, Align);
for (; CurrentOffset != AlignedOffset; ++CurrentOffset)
ContiguousBlobAccumulator(uint64_t InitialOffset_)
: InitialOffset(InitialOffset_), Buf(), OS(Buf) {}
template <class Integer>
- raw_ostream &getOSAndAlignedOffset(Integer &Offset, unsigned Align = 16) {
+ raw_ostream &getOSAndAlignedOffset(Integer &Offset, unsigned Align) {
Offset = padToAlignment(Align);
return OS;
}
ContiguousBlobAccumulator &CBA);
bool writeSectionContent(Elf_Shdr &SHeader, const ELFYAML::Group &Group,
ContiguousBlobAccumulator &CBA);
+ bool writeSectionContent(Elf_Shdr &SHeader,
+ const ELFYAML::MipsABIFlags &Section,
+ ContiguousBlobAccumulator &CBA);
// - SHT_NULL entry (placed first, i.e. 0'th entry)
// - symbol table (.symtab) (placed third to last)
unsigned Index;
if (SN2I.lookup(S->Info, Index)) {
- errs() << "error: Unknown section referenced: '" << S->Info
- << "' at YAML section '" << S->Name << "'.\n";
- return false;
+ if (S->Info.getAsInteger(0, Index)) {
+ errs() << "error: Unknown section referenced: '" << S->Info
+ << "' at YAML section '" << S->Name << "'.\n";
+ return false;
+ }
}
SHeader.sh_info = Index;
SHeader.sh_info = SymIdx;
if (!writeSectionContent(SHeader, *S, CBA))
return false;
+ } else if (auto S = dyn_cast<ELFYAML::MipsABIFlags>(Sec.get())) {
+ if (!writeSectionContent(SHeader, *S, CBA))
+ return false;
+ } else if (auto S = dyn_cast<ELFYAML::NoBitsSection>(Sec.get())) {
+ SHeader.sh_entsize = 0;
+ SHeader.sh_size = S->Size;
+ // SHT_NOBITS section does not have content
+ // so just to setup the section offset.
+ CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
} else
llvm_unreachable("Unknown section type");
// One greater than symbol table index of the last local symbol.
SHeader.sh_info = Doc.Symbols.Local.size() + 1;
SHeader.sh_entsize = sizeof(Elf_Sym);
+ SHeader.sh_addralign = 8;
std::vector<Elf_Sym> Syms;
{
addSymbols(Doc.Symbols.Global, Syms, ELF::STB_GLOBAL);
addSymbols(Doc.Symbols.Weak, Syms, ELF::STB_WEAK);
- writeArrayData(CBA.getOSAndAlignedOffset(SHeader.sh_offset),
- makeArrayRef(Syms));
+ writeArrayData(
+ CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign),
+ makeArrayRef(Syms));
SHeader.sh_size = arrayDataSize(makeArrayRef(Syms));
}
zero(SHeader);
SHeader.sh_name = DotShStrtab.getOffset(Name);
SHeader.sh_type = ELF::SHT_STRTAB;
- CBA.getOSAndAlignedOffset(SHeader.sh_offset) << STB.data();
+ CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign)
+ << STB.data();
SHeader.sh_size = STB.data().size();
SHeader.sh_addralign = 1;
}
ContiguousBlobAccumulator &CBA) {
assert(Section.Size >= Section.Content.binary_size() &&
"Section size and section content are inconsistent");
- raw_ostream &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset);
+ raw_ostream &OS =
+ CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
Section.Content.writeAsBinary(OS);
for (auto i = Section.Content.binary_size(); i < Section.Size; ++i)
OS.write(0);
ELFState<ELFT>::writeSectionContent(Elf_Shdr &SHeader,
const ELFYAML::RelocationSection &Section,
ContiguousBlobAccumulator &CBA) {
- if (Section.Type != llvm::ELF::SHT_REL &&
- Section.Type != llvm::ELF::SHT_RELA) {
- errs() << "error: Invalid relocation section type.\n";
- return false;
- }
+ assert((Section.Type == llvm::ELF::SHT_REL ||
+ Section.Type == llvm::ELF::SHT_RELA) &&
+ "Section type is not SHT_REL nor SHT_RELA");
bool IsRela = Section.Type == llvm::ELF::SHT_RELA;
SHeader.sh_entsize = IsRela ? sizeof(Elf_Rela) : sizeof(Elf_Rel);
SHeader.sh_size = SHeader.sh_entsize * Section.Relocations.size();
- auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset);
+ auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
for (const auto &Rel : Section.Relocations) {
- unsigned SymIdx;
- if (SymN2I.lookup(Rel.Symbol, SymIdx)) {
- errs() << "error: Unknown symbol referenced: '" << Rel.Symbol
- << "' at YAML relocation.\n";
- return false;
- }
+ unsigned SymIdx = 0;
+ // Some special relocation, R_ARM_v4BX for instance, does not have
+ // an external reference. So it ignores the return value of lookup()
+ // here.
+ SymN2I.lookup(Rel.Symbol, SymIdx);
if (IsRela) {
Elf_Rela REntry;
const ELFYAML::Group &Section,
ContiguousBlobAccumulator &CBA) {
typedef typename object::ELFFile<ELFT>::Elf_Word Elf_Word;
- if (Section.Type != llvm::ELF::SHT_GROUP) {
- errs() << "error: Invalid section type.\n";
- return false;
- }
+ assert(Section.Type == llvm::ELF::SHT_GROUP &&
+ "Section type is not SHT_GROUP");
SHeader.sh_entsize = sizeof(Elf_Word);
SHeader.sh_size = SHeader.sh_entsize * Section.Members.size();
- auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset);
+ auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
for (auto member : Section.Members) {
Elf_Word SIdx;
return true;
}
+template <class ELFT>
+bool ELFState<ELFT>::writeSectionContent(Elf_Shdr &SHeader,
+ const ELFYAML::MipsABIFlags &Section,
+ ContiguousBlobAccumulator &CBA) {
+ assert(Section.Type == llvm::ELF::SHT_MIPS_ABIFLAGS &&
+ "Section type is not SHT_MIPS_ABIFLAGS");
+
+ object::Elf_Mips_ABIFlags<ELFT> Flags;
+ zero(Flags);
+ SHeader.sh_entsize = sizeof(Flags);
+ SHeader.sh_size = SHeader.sh_entsize;
+
+ auto &OS = CBA.getOSAndAlignedOffset(SHeader.sh_offset, SHeader.sh_addralign);
+ Flags.version = Section.Version;
+ Flags.isa_level = Section.ISALevel;
+ Flags.isa_rev = Section.ISARevision;
+ Flags.gpr_size = Section.GPRSize;
+ Flags.cpr1_size = Section.CPR1Size;
+ Flags.cpr2_size = Section.CPR2Size;
+ Flags.fp_abi = Section.FpABI;
+ Flags.isa_ext = Section.ISAExtension;
+ Flags.ases = Section.ASEs;
+ Flags.flags1 = Section.Flags1;
+ Flags.flags2 = Section.Flags2;
+ OS.write((const char *)&Flags, sizeof(Flags));
+
+ return true;
+}
+
template <class ELFT> bool ELFState<ELFT>::buildSectionIndex() {
SN2I.addName(".symtab", getDotSymTabSecNo());
SN2I.addName(".strtab", getDotStrTabSecNo());
return 1;
}
using object::ELFType;
- typedef ELFType<support::little, 8, true> LE64;
- typedef ELFType<support::big, 8, true> BE64;
- typedef ELFType<support::little, 4, false> LE32;
- typedef ELFType<support::big, 4, false> BE32;
+ typedef ELFType<support::little, true> LE64;
+ typedef ELFType<support::big, true> BE64;
+ typedef ELFType<support::little, false> LE32;
+ typedef ELFType<support::big, false> BE32;
if (is64Bit(Doc)) {
if (isLittleEndian(Doc))
return ELFState<LE64>::writeELF(Out, Doc);
projects / oota-llvm.git / blobdiff