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ELF2: Simplify. NFC. 

llvm-svn: 249965
This commit is contained in:
Rui Ueyama 2015-10-11 02:22:31 +00:00
parent a467240309
commit cacf967ed5
1 changed files with 14 additions and 34 deletions
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48
lld/ELF/Driver.cpp
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@ -19,6 +19,7 @@
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
#include <utility>
using namespace llvm;
using namespace llvm::ELF;
@ -38,38 +39,14 @@ void lld::elf2::link(ArrayRef<const char *> Args) {
Driver->main(Args.slice(1));
}
static void setELFType(StringRef Emul) {
if (Emul == "elf_i386") {
Config->ElfKind = ELF32LEKind;
Config->EMachine = EM_386;
return;
}
if (Emul == "elf_x86_64") {
Config->ElfKind = ELF64LEKind;
Config->EMachine = EM_X86_64;
return;
}
if (Emul == "elf32ltsmip") {
Config->ElfKind = ELF32LEKind;
Config->EMachine = EM_MIPS;
return;
}
if (Emul == "elf32btsmip") {
Config->ElfKind = ELF32BEKind;
Config->EMachine = EM_MIPS;
return;
}
if (Emul == "elf32ppc") {
Config->ElfKind = ELF32BEKind;
Config->EMachine = EM_PPC;
return;
}
if (Emul == "elf64ppc") {
Config->ElfKind = ELF64BEKind;
Config->EMachine = EM_PPC64;
return;
}
error(Twine("Unknown emulation: ") + Emul);
static std::pair<ELFKind, uint16_t> parseEmulation(StringRef S) {
if (S == "elf32btsmip") return {ELF32BEKind, EM_MIPS};
if (S == "elf32ltsmip") return {ELF32LEKind, EM_MIPS};
if (S == "elf32ppc") return {ELF32BEKind, EM_PPC};
if (S == "elf64ppc") return {ELF64BEKind, EM_PPC64};
if (S == "elf_i386") return {ELF32LEKind, EM_386};
if (S == "elf_x86_64") return {ELF64LEKind, EM_X86_64};
error("Unknown emulation: " + S);
}
static TargetInfo *createTarget() {
@ -200,8 +177,11 @@ void LinkerDriver::createFiles(opt::InputArgList &Args) {
if (!RPaths.empty())
Config->RPath = llvm::join(RPaths.begin(), RPaths.end(), ":");
if (auto *Arg = Args.getLastArg(OPT_m))
setELFType(Arg->getValue());
if (auto *Arg = Args.getLastArg(OPT_m)) {
std::pair<ELFKind, uint16_t> P = parseEmulation(Arg->getValue());
Config->ElfKind = P.first;
Config->EMachine = P.second;
}
Config->AllowMultipleDefinition = Args.hasArg(OPT_allow_multiple_definition);
Config->DiscardAll = Args.hasArg(OPT_discard_all);