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[yaml2obj][ELF] Make this "type switch" actually readable.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184623 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sean Silva 2013-06-22 01:03:35 +00:00
parent e766884193
commit efc78986b3
1 changed files with 20 additions and 7 deletions
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27
tools/yaml2obj/yaml2elf.cpp
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@ -361,6 +361,14 @@ static int writeELF(raw_ostream &OS, const ELFYAML::Object &Doc) {
return 0;
}
static bool is64Bit(const ELFYAML::Object &Doc) {
return Doc.Header.Class == ELFYAML::ELF_ELFCLASS(ELF::ELFCLASS64);
}
static bool isLittleEndian(const ELFYAML::Object &Doc) {
return Doc.Header.Data == ELFYAML::ELF_ELFDATA(ELF::ELFDATA2LSB);
}
int yaml2elf(llvm::raw_ostream &Out, llvm::MemoryBuffer *Buf) {
yaml::Input YIn(Buf->getBuffer());
ELFYAML::Object Doc;
@ -369,15 +377,20 @@ int yaml2elf(llvm::raw_ostream &Out, llvm::MemoryBuffer *Buf) {
errs() << "yaml2obj: Failed to parse YAML file!\n";
return 1;
}
if (Doc.Header.Class == ELFYAML::ELF_ELFCLASS(ELF::ELFCLASS64)) {
if (Doc.Header.Data == ELFYAML::ELF_ELFDATA(ELF::ELFDATA2LSB))
return writeELF<object::ELFType<support::little, 8, true> >(outs(), Doc);
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;
if (is64Bit(Doc)) {
if (isLittleEndian(Doc))
return writeELF<LE64>(outs(), Doc);
else
return writeELF<object::ELFType<support::big, 8, true> >(outs(), Doc);
return writeELF<BE64>(outs(), Doc);
} else {
if (Doc.Header.Data == ELFYAML::ELF_ELFDATA(ELF::ELFDATA2LSB))
return writeELF<object::ELFType<support::little, 4, false> >(outs(), Doc);
if (isLittleEndian(Doc))
return writeELF<LE32>(outs(), Doc);
else
return writeELF<object::ELFType<support::big, 4, false> >(outs(), Doc);
return writeELF<BE32>(outs(), Doc);
}
}