HexagonEmulation.cpp revision f7ac0f19a1c8d0ad14bcf6456ce368b830fea886 
1//===- HexagonEmulation.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 "Hexagon.h"
10#include <mcld/LinkerScript.h>
11#include <mcld/LinkerConfig.h>
12#include <mcld/Target/ELFEmulation.h>
13#include <mcld/Support/TargetRegistry.h>
14
15namespace mcld {
16
17static bool MCLDEmulateHexagonELF(LinkerScript& pScript, LinkerConfig& pConfig)
18{
19  if (!MCLDEmulateELF(pScript, pConfig))
20    return false;
21
22  // set up bitclass and endian
23  pConfig.targets().setEndian(TargetOptions::Little);
24  pConfig.targets().setBitClass(32);
25
26  // set up target-dependent constraints of attributes
27  pConfig.attribute().constraint().enableWholeArchive();
28  pConfig.attribute().constraint().enableAsNeeded();
29  pConfig.attribute().constraint().setSharedSystem();
30
31  // set up the predefined attributes
32  pConfig.attribute().predefined().unsetWholeArchive();
33  pConfig.attribute().predefined().unsetAsNeeded();
34  pConfig.attribute().predefined().setDynamic();
35  return true;
36}
37
38//===----------------------------------------------------------------------===//
39// emulateHexagonLD - the help function to emulate Hexagon ld
40//===----------------------------------------------------------------------===//
41bool emulateHexagonLD(LinkerScript& pScript, LinkerConfig& pConfig)
42{
43  if (pConfig.targets().triple().isOSDarwin()) {
44    assert(0 && "MachO linker has not supported yet");
45    return false;
46  }
47  if (pConfig.targets().triple().isOSWindows()) {
48    assert(0 && "COFF linker has not supported yet");
49    return false;
50  }
51
52  return MCLDEmulateHexagonELF(pScript, pConfig);
53}
54
55} // namespace of mcld
56
57//===----------------------------------------------------------------------===//
58// HexagonEmulation
59//===----------------------------------------------------------------------===//
60extern "C" void MCLDInitializeHexagonEmulation() {
61  // Register the emulation
62  mcld::TargetRegistry::RegisterEmulation(mcld::TheHexagonTarget,
63                                          mcld::emulateHexagonLD);
64}
65
66