You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.6 KiB
74 lines
2.6 KiB
//===- X86Emulation.cpp ---------------------------------------------------===//
|
|
//
|
|
// The MCLinker Project
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
#include "X86.h"
|
|
#include "mcld/LinkerConfig.h"
|
|
#include "mcld/LinkerScript.h"
|
|
#include "mcld/Support/TargetRegistry.h"
|
|
#include "mcld/Target/ELFEmulation.h"
|
|
|
|
namespace mcld {
|
|
|
|
static bool MCLDEmulateX86ELF(LinkerScript& pScript, LinkerConfig& pConfig) {
|
|
if (!MCLDEmulateELF(pScript, pConfig))
|
|
return false;
|
|
|
|
// set up bitclass and endian
|
|
pConfig.targets().setEndian(TargetOptions::Little);
|
|
unsigned int bitclass;
|
|
llvm::Triple::ArchType arch = pConfig.targets().triple().getArch();
|
|
assert(arch == llvm::Triple::x86 || arch == llvm::Triple::x86_64);
|
|
if (arch == llvm::Triple::x86 ||
|
|
pConfig.targets().triple().getEnvironment() == llvm::Triple::GNUX32) {
|
|
bitclass = 32;
|
|
} else {
|
|
bitclass = 64;
|
|
}
|
|
pConfig.targets().setBitClass(bitclass);
|
|
|
|
// set up target-dependent constraints of attributes
|
|
pConfig.attribute().constraint().enableWholeArchive();
|
|
pConfig.attribute().constraint().enableAsNeeded();
|
|
pConfig.attribute().constraint().setSharedSystem();
|
|
|
|
// set up the predefined attributes
|
|
pConfig.attribute().predefined().unsetWholeArchive();
|
|
pConfig.attribute().predefined().unsetAsNeeded();
|
|
pConfig.attribute().predefined().setDynamic();
|
|
return true;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// emulateX86LD - the help function to emulate X86 ld
|
|
//===----------------------------------------------------------------------===//
|
|
bool emulateX86LD(LinkerScript& pScript, LinkerConfig& pConfig) {
|
|
if (pConfig.targets().triple().isOSDarwin()) {
|
|
assert(0 && "MachO linker has not supported yet");
|
|
return false;
|
|
}
|
|
if (pConfig.targets().triple().isOSWindows()) {
|
|
assert(0 && "COFF linker has not supported yet");
|
|
return false;
|
|
}
|
|
|
|
return MCLDEmulateX86ELF(pScript, pConfig);
|
|
}
|
|
|
|
} // namespace mcld
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// X86Emulation
|
|
//===----------------------------------------------------------------------===//
|
|
extern "C" void MCLDInitializeX86Emulation() {
|
|
// Register the emulation
|
|
mcld::TargetRegistry::RegisterEmulation(mcld::TheX86_32Target,
|
|
mcld::emulateX86LD);
|
|
mcld::TargetRegistry::RegisterEmulation(mcld::TheX86_64Target,
|
|
mcld::emulateX86LD);
|
|
}
|