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68 lines
2.5 KiB
68 lines
2.5 KiB
4 months ago
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//===- MipsEmulation.cpp --------------------------------------------------===//
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//
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// The MCLinker Project
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "Mips.h"
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#include "mcld/LinkerScript.h"
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#include "mcld/LinkerConfig.h"
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#include "mcld/Support/TargetRegistry.h"
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#include "mcld/Target/ELFEmulation.h"
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namespace mcld {
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static bool MCLDEmulateMipsELF(LinkerScript& pScript, LinkerConfig& pConfig) {
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if (!MCLDEmulateELF(pScript, pConfig))
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return false;
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// set up bitclass and endian
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pConfig.targets().setEndian(TargetOptions::Little);
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llvm::Triple::ArchType arch = pConfig.targets().triple().getArch();
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assert(arch == llvm::Triple::mipsel || arch == llvm::Triple::mips64el);
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unsigned bitclass = arch == llvm::Triple::mipsel ? 32 : 64;
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pConfig.targets().setBitClass(bitclass);
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// set up target-dependent constraints of attributes
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pConfig.attribute().constraint().enableWholeArchive();
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pConfig.attribute().constraint().enableAsNeeded();
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pConfig.attribute().constraint().setSharedSystem();
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// set up the predefined attributes
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pConfig.attribute().predefined().unsetWholeArchive();
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pConfig.attribute().predefined().unsetAsNeeded();
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pConfig.attribute().predefined().setDynamic();
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return true;
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}
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//===----------------------------------------------------------------------===//
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// emulateMipsLD - the help function to emulate Mips ld
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//===----------------------------------------------------------------------===//
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bool emulateMipsLD(LinkerScript& pScript, LinkerConfig& pConfig) {
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if (pConfig.targets().triple().isOSDarwin()) {
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assert(0 && "MachO linker has not supported yet");
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return false;
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}
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if (pConfig.targets().triple().isOSWindows()) {
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assert(0 && "COFF linker has not supported yet");
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return false;
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}
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return MCLDEmulateMipsELF(pScript, pConfig);
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}
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} // namespace mcld
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//===----------------------------------------------------------------------===//
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// MipsEmulation
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//===----------------------------------------------------------------------===//
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extern "C" void MCLDInitializeMipsEmulation() {
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mcld::TargetRegistry::RegisterEmulation(mcld::TheMipselTarget,
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mcld::emulateMipsLD);
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mcld::TargetRegistry::RegisterEmulation(mcld::TheMips64elTarget,
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mcld::emulateMipsLD);
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}
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