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Add a helper for getting a section's content as an array.

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It will be used in lld shortly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249690 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2015-10-08 13:38:42 +00:00
parent dd7476cff0
commit f53283b3ae
1 changed files with 20 additions and 5 deletions
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25
include/llvm/Object/ELF.h
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@ -210,6 +210,8 @@ public:
}
ErrorOr<StringRef> getSectionName(const Elf_Shdr *Section) const;
template <typename T>
ErrorOr<ArrayRef<T>> getSectionContentsAsArray(const Elf_Shdr *Sec) const;
ErrorOr<ArrayRef<uint8_t> > getSectionContents(const Elf_Shdr *Sec) const;
};
@ -243,12 +245,25 @@ ELFFile<ELFT>::getSection(const Elf_Sym *Sym, const Elf_Shdr *SymTab,
}
template <class ELFT>
ErrorOr<ArrayRef<uint8_t> >
ELFFile<ELFT>::getSectionContents(const Elf_Shdr *Sec) const {
if (Sec->sh_offset + Sec->sh_size > Buf.size())
template <typename T>
ErrorOr<ArrayRef<T>>
ELFFile<ELFT>::getSectionContentsAsArray(const Elf_Shdr *Sec) const {
uintX_t Offset = Sec->sh_offset;
uintX_t Size = Sec->sh_size;
if (Size % sizeof(T))
return object_error::parse_failed;
const uint8_t *Start = base() + Sec->sh_offset;
return makeArrayRef(Start, Sec->sh_size);
if (Offset + Size > Buf.size())
return object_error::parse_failed;
const T *Start = reinterpret_cast<const T *>(base() + Offset);
return makeArrayRef(Start, Size / sizeof(T));
}
template <class ELFT>
ErrorOr<ArrayRef<uint8_t>>
ELFFile<ELFT>::getSectionContents(const Elf_Shdr *Sec) const {
return getSectionContentsAsArray<uint8_t>(Sec);
}
template <class ELFT>