X86Emulation.cpp revision 22add6ff3426df1a85089fe6a6e1597ee3b6f300 
1//===- X86Emulation.cpp ---------------------------------------------------===//
2//
3//                     The MCLinker Project
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9#include "X86.h"
10#include <mcld/LinkerConfig.h>
11#include <mcld/Target/ELFEmulation.h>
12#include <mcld/Support/TargetRegistry.h>
13
14namespace mcld {
15
16static bool MCLDEmulateX86ELF(LinkerConfig& pConfig)
17{
18  if (!MCLDEmulateELF(pConfig))
19    return false;
20
21  // set up target-dependent constraints of attributes
22  pConfig.attribute().constraint().enableWholeArchive();
23  pConfig.attribute().constraint().enableAsNeeded();
24  pConfig.attribute().constraint().setSharedSystem();
25
26  // set up the predefined attributes
27  pConfig.attribute().predefined().unsetWholeArchive();
28  pConfig.attribute().predefined().unsetAsNeeded();
29  pConfig.attribute().predefined().setDynamic();
30  return true;
31}
32
33//===----------------------------------------------------------------------===//
34// emulateX86LD - the help function to emulate X86 ld
35//===----------------------------------------------------------------------===//
36bool emulateX86LD(const std::string& pTriple, LinkerConfig& pConfig)
37{
38  llvm::Triple theTriple(pTriple);
39  if (theTriple.isOSDarwin()) {
40    assert(0 && "MachO linker has not supported yet");
41    return false;
42  }
43  if (theTriple.isOSWindows()) {
44    assert(0 && "COFF linker has not supported yet");
45    return false;
46  }
47
48  return MCLDEmulateX86ELF(pConfig);
49}
50
51} // namespace of mcld
52
53//===----------------------------------------------------------------------===//
54// X86Emulation
55//===----------------------------------------------------------------------===//
56extern "C" void MCLDInitializeX86Emulation() {
57  // Register the emulation
58  mcld::TargetRegistry::RegisterEmulation(mcld::TheX86Target, mcld::emulateX86LD);
59}
60
61