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Initial import of LLVM 3.3

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This commit is contained in:
Pascal Junod
2014-01-06 11:44:52 +01:00
parent 0906a82c26
commit 51299c090d
9524 changed files with 720814 additions and 262387 deletions
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lib/Object/ELFObjectFile.cpp
+40 -6
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@@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/Object/ELF.h"
#include "llvm/Support/MathExtras.h"
namespace llvm {
@@ -22,16 +23,49 @@ ObjectFile *ObjectFile::createELFObjectFile(MemoryBuffer *Object) {
std::pair<unsigned char, unsigned char> Ident = getElfArchType(Object);
error_code ec;
std::size_t MaxAlignment =
1ULL << CountTrailingZeros_64(uintptr_t(Object->getBufferStart()));
if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2LSB)
return new ELFObjectFile<support::little, false>(Object, ec);
#if !LLVM_IS_UNALIGNED_ACCESS_FAST
if (MaxAlignment >= 4)
return new ELFObjectFile<ELFType<support::little, 4, false> >(Object, ec);
else
#endif
if (MaxAlignment >= 2)
return new ELFObjectFile<ELFType<support::little, 2, false> >(Object, ec);
else
llvm_unreachable("Invalid alignment for ELF file!");
else if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2MSB)
return new ELFObjectFile<support::big, false>(Object, ec);
#if !LLVM_IS_UNALIGNED_ACCESS_FAST
if (MaxAlignment >= 4)
return new ELFObjectFile<ELFType<support::big, 4, false> >(Object, ec);
else
#endif
if (MaxAlignment >= 2)
return new ELFObjectFile<ELFType<support::big, 2, false> >(Object, ec);
else
llvm_unreachable("Invalid alignment for ELF file!");
else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2MSB)
return new ELFObjectFile<support::big, true>(Object, ec);
#if !LLVM_IS_UNALIGNED_ACCESS_FAST
if (MaxAlignment >= 8)
return new ELFObjectFile<ELFType<support::big, 8, true> >(Object, ec);
else
#endif
if (MaxAlignment >= 2)
return new ELFObjectFile<ELFType<support::big, 2, true> >(Object, ec);
else
llvm_unreachable("Invalid alignment for ELF file!");
else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2LSB) {
ELFObjectFile<support::little, true> *result =
new ELFObjectFile<support::little, true>(Object, ec);
return result;
#if !LLVM_IS_UNALIGNED_ACCESS_FAST
if (MaxAlignment >= 8)
return new ELFObjectFile<ELFType<support::little, 8, true> >(Object, ec);
else
#endif
if (MaxAlignment >= 2)
return new ELFObjectFile<ELFType<support::little, 2, true> >(Object, ec);
else
llvm_unreachable("Invalid alignment for ELF file!");
}
report_fatal_error("Buffer is not an ELF object file!");